pax_global_header00006660000000000000000000000064134610312310014504gustar00rootroot0000000000000052 comment=baacd922116636576ff0b67600cb1eea94796088 ptunnel-ng-1.42/000077500000000000000000000000001346103123100135215ustar00rootroot00000000000000ptunnel-ng-1.42/.gitlab-ci.yml000066400000000000000000000053401346103123100161570ustar00rootroot00000000000000image: debian:stable-slim stages: - build before_script: - test ! -r /etc/debian_version || apt-get -qq update - test ! -r /etc/debian_version || apt-get install -y git debhelper dpkg-dev build-essential fakeroot flawfinder wget unzip - test ! -r /etc/debian_version || apt-get install -y libpcap-dev libselinux1-dev - test ! -r /etc/debian_version || apt-get install -y binutils-mingw-w64-i686 gcc-mingw-w64 mingw-w64-i686-dev mingw-w64-common clang - test ! -r /etc/debian_version || apt-get install -y autoconf automake dh-autoreconf - test ! -r /etc/arch-release || pacman -Sy archlinux-keyring --noconfirm - test ! -r /etc/arch-release || pacman -Syu --noconfirm - test ! -r /etc/arch-release || pacman -S --noconfirm binutils gcc base-devel git build: script: - autoreconf -fi - ./configure --prefix=/ - make install CFLAGS='-Werror' DESTDIR="$(realpath ./deploy)" V=s stage: build artifacts: paths: - deploy/ - config.log when: always build-debian: script: - dpkg-buildpackage -b -us -uc stage: build artifacts: paths: - config.log when: always build-archlinux: image: finalduty/archlinux:daily script: - useradd builduser -m - passwd -d builduser - chown -R builduser . - su -m builduser bash -c 'makepkg' - su -m builduser bash -c 'makepkg -p PKGBUILD.dev --skipchecksums' stage: build build-mingw: script: - autoreconf -fi - ./configure --prefix=/ --host=i686-w64-mingw32 - make install CFLAGS='-Werror' DESTDIR="$(realpath ./deploy)" V=s stage: build artifacts: paths: - deploy/ - config.log when: always build-clang: script: - autoreconf -fi - CC=clang ./configure --prefix=/ - make install CFLAGS='-Werror -Wno-error=for-loop-analysis' DESTDIR="$(realpath ./deploy)" V=s stage: build artifacts: paths: - deploy/ - config.log when: always build-android: cache: key: toolchain-cache paths: - vendor/ script: - mkdir -p vendor && cd vendor - test -r 'android-ndk-r19-linux-x86_64.zip' || wget --progress=dot:mega 'https://dl.google.com/android/repository/android-ndk-r19-linux-x86_64.zip' - test -d 'android-ndk-r19' || unzip -q 'android-ndk-r19-linux-x86_64.zip' - cd .. - autoreconf -fi - CC=aarch64-linux-android28-clang PATH="${PATH}:$(realpath ./vendor/android-ndk-r19/toolchains/llvm/prebuilt/linux-x86_64/bin)" ./configure --host=aarch64-linux-android - PATH="${PATH}:$(realpath ./vendor/android-ndk-r19/toolchains/llvm/prebuilt/linux-x86_64/bin)" make install CFLAGS='-Werror -Wno-error=for-loop-analysis' DESTDIR="$(realpath ./deploy)" V=s stage: build artifacts: paths: - deploy/ - config.log when: always ptunnel-ng-1.42/.travis.yml000066400000000000000000000067571346103123100156510ustar00rootroot00000000000000language: c before_install: - sudo apt-get -qq update - sudo apt-get install -y git debhelper dpkg-dev build-essential fakeroot flawfinder wget unzip realpath - sudo apt-get install -y libpcap-dev libselinux1-dev - sudo apt-get install -y binutils-mingw-w64-i686 gcc-mingw-w64 mingw-w64-i686-dev mingw-w64-common clang - sudo apt-get install -y autoconf automake dh-autoreconf after_failure: - cat config.log script: - mkdir -p ./deploy # default gcc build - autoreconf -fi - ./configure --prefix=/ - make install CFLAGS='-Werror' DESTDIR="$(realpath ./deploy)" V=s - make clean # debian build - dpkg-buildpackage -b -us -uc - make clean # mingw-w64 build - CC=i686-w64-mingw32-gcc ./configure --prefix=/ --host=i686-w64-mingw32 - make install CFLAGS='-Werror' DESTDIR="$(realpath ./deploy)" V=s - make clean # clang build - CC=clang ./configure --prefix=/ - make install CFLAGS='-Werror -Wno-error=for-loop-analysis' DESTDIR="$(realpath ./deploy)" V=s - make clean # android build - mkdir -p vendor && cd vendor - test -r 'android-ndk-r19-linux-x86_64.zip' || wget --progress=dot:mega 'https://dl.google.com/android/repository/android-ndk-r19-linux-x86_64.zip' - test -d 'android-ndk-r19' || unzip -q 'android-ndk-r19-linux-x86_64.zip' - cd .. - CC=aarch64-linux-android28-clang PATH="${PATH}:$(realpath ./vendor/android-ndk-r19/toolchains/llvm/prebuilt/linux-x86_64/bin)" ./configure --host=aarch64-linux-android - PATH="${PATH}:$(realpath ./vendor/android-ndk-r19/toolchains/llvm/prebuilt/linux-x86_64/bin)" make install CFLAGS='-Werror -Wno-error=for-loop-analysis' DESTDIR="$(realpath ./deploy)" V=s # archlinux build # see: https://wiki.archlinux.org/index.php/Install_from_existing_Linux#Method_A:_Using_the_bootstrap_image_(recommended) #- wget --progress=dot:mega 'https://ftp.fau.de/archlinux/iso/2019.02.01/archlinux-bootstrap-2019.02.01-x86_64.tar.gz' #- sudo tar -xzf 'archlinux-bootstrap-2019.02.01-x86_64.tar.gz' #- sudo mount --bind "$(realpath ./root.x86_64)" "$(realpath ./root.x86_64)" #- cd "$(realpath ./root.x86_64)" #- git clone .. #- sudo cp '/etc/resolv.conf' etc #- sudo mount -t proc /proc proc #- sudo mount --make-rslave --rbind /sys sys #- sudo mount --make-rslave --rbind /dev dev #- sudo mount --make-rslave --rbind /run run #- sudo chroot . /bin/bash -c 'pacman -Sy archlinux-keyring --noconfirm' #- sudo chroot . /bin/bash -c 'pacman -Syu --noconfirm' #- sudo chroot . /bin/bash -c 'pacman -S --noconfirm binutils gcc base-devel git' #- sudo chroot . /bin/bash -c 'cd ptunnel-ng && makepkg' #- sudo chroot . /bin/bash -c 'cd ptunnel-ng && makepkg -p PKGBUILD.dev --skipchecksums' #- cd .. env: global: - secure: 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 addons: coverity_scan: project: name: lnslbrty/ptunnel-ng notification_email: matzeton@googlemail.com build_command_prepend: autoreconf -i && ./configure build_command: make branch_pattern: coverity_scan ptunnel-ng-1.42/AUTHORS000066400000000000000000000003171346103123100145720ustar00rootroot00000000000000Daniel Stoedle Mike Miller Toni Uhlig Sebastien Raveau Masaq- elnerd ptunnel-ng-1.42/COPYING000066400000000000000000000027701346103123100145620ustar00rootroot00000000000000Copyright (c) 2017-2019, Toni Uhlig All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ptunnel-ng-1.42/ChangeLog000066400000000000000000000143331346103123100152770ustar00rootroot00000000000000PingTunnel-NG Changelog ======================= 1.42 - 27. April 2019 - updated SeLinux policy file - added SeLinux policy compile script - list available pcap devices - fixed build errors related to pcap 1.41 - 03. April 2019 - change the RNG device during ./configure (fixes issues on systems without enough entropy avilable from it's random source) 1.40 - 20. March 2019 - improved empty ping mode (by Masaq-) - fixed NULL pointer derefs and division by zero - more secure chroot - CWE-126 workaround reported by codacy - switched to /dev/random as RNG except for Windows - fixed CLang related build errors - fixed SEGFAULT when network not reachable (by Masaq-) - added extended options for protocol tuning (by Masaq-) - Systemd support (also in debian/rules) - fixed compilation issues for Android targets - fixed 100% CPU consumption when receive window is full but data via select() available (by Masq-) 1.32 - 24. January 2019 - improved error logging - introduced icmp_filter via setsockopt to filter unwanted icmp messages - more "secure" random number generator - fixed NULL deref and invalid memory access by elnerd (https://github.com/elnerd) PoC: https://www.securityfocus.com/bid/54627/info 1.31 - 03. December 2018 - added Android build support (requires a root'ed device!) - fixed ArchLinux PKGBUILD/AUR 1.30 - 19. October 2018 - travis-ci, coverity integration - xcompile issue for mingw-w64 fixed - fixed wrong usage of format() specifiers 1.20 - 15. July 2018 - Readme improvements - Fixes a possible memory leak when a packet could not send - Better error handling on socket descriptor creation - All Coverity issues fixed 1.00 - 18. December 2017 - First public release - Fixes a exploitable memory leak (proxy/forwarder) if using password protected challenge response authentication. - Fixes an invalid memory write during a pcap capture. - Full source refactoring. The code should be more readable imho. - This project is now Autotools based. Disable optional features: SeLinux, pcap. - Removed an already disabled and highly buggy feature: kPT_add_iphdr - Added a more "GNU" alike option parsing. - Support a user defined PingTunnel-NG magic value which is required for bypassing Cisco IPS (and maybe other IDS/IPS/Firewalls). This feature was well tested against Cisco's "IronPort" which scans for fingerprints in an ICMP packet (PingTunnel magic value). PingTunnel Changelog ==================== 0.72 - 5. September 2011 - Fixes an authentication bug that would manifest as hung connections with protocols that send data from the client-side before receiving data from the server-side. Thanks to StalkR for locating the bug and fixing it. - Fixes a crash when attempting to enable packet-capture for non-existing network devices. Thanks to Steffen Wendzel for the patch. 0.71 - 22. June 2009 - Added security features and SELinux support, courtesy of Sebastien Raveau. 0.70 - 12. January 2009 - Added rudimentary support for tunneling over udp port 53. - Added built-in support for compiling on Windows, thanks to Mike Miller. - Added syslog support, also courtesy of Mike Miller. - Experimental support for spoofing the source IP address. The source address must be explicitly configured in the source code, and it might not work (which is why it's experimental). To enable, define kPT_add_iphdr to 1. 0.62 - [Never released] - Added many comments to the ptunnel header file. - Moved most include directives to the header file. - Fixed crash if proxy or destination hostnames could not be looked up. 0.61 - 26. May 2005 - Noted that ptunnel now works without packet capturing on Mac OS X 10.4 Tiger. - Log files are now opened in append-mode (i.e., not truncated). - Fixed a bug that could cause ptunnel to crash if passwords shorter than 16 characters were used (the overwhelming majority of passwords, most likely!). 0.60 - 15. Apr 2005 - Added authentication support, changing parts of the ptunnel protocol. - Added a manpage. - Added MD5 implementation by L. Peter Deutsch for authentication. - Moved declaration of a variable to allow ptunnel to compile cleanly on gcc 2.95 - thanks Choong! - Added error handling for proxy connections. - Fixed a problem with printing send/recv info. All verbosity levels should work now. - Updated contact info. 0.55 - 18. Feb 2005 - Fixed a locking bug that would manifest itself when the maximum connection count on the proxy was reached. - Fixed ptunnel to compile correctly on 64-bit architectures (thanks to smund Grammeltvedt for pointing out the necessary changes!) - Added a new logging level (level 5). Level 4 no longer outputs send and receive info; for this info level 5 is necessary. - When libpcap is in use, the interface is no longer put in promiscous mode. This has never been necessary, and also makes it impossible to use ptunnel with more than one client on the same network. - Discovered a problem with pcap that would cause ptunnel to hang when pcap was in use. This problem has not been resolved; the workaround is to simply re-execute the client, or disable pcap if possible. - Added support for specifying a log file on the command line, using the -f switch. 0.54 - 1. Feb 2005 - Fixed a byte-order bug (thanks Alfred!) 0.53 - 31. Jan 2005 - Fixed a threading bug, and implemented support for limiting the maximum number of tunnels. Thanks to Alfred Young for reporting and fixing the following bugs: - Fixed a bug with packets captured via libpcap, where the struct sockaddr wasn't properly zeroed. - Fixed a byte order bug in create_and_insert_proxy_desc. - Fixed a memory leak in remove_proxy_desc. 0.52 - 3. Jan 2005 - Fixed a problem introduced by the ICMP ID field changes. The proxy didn't retain the ID of the packets received from clients, resulting in dropped ICMP packets at the router. This in turn lead to the tunnel no longer working, depending on the strictness of the router. This version fixes that problem. - Makefile is better now, thanks to Dries Verachtert. 0.51 - 2. Jan 2005 - Fixed incorrect checksum calculation for resent packets. - Stopped relying on the ICMP packet's "built-in" ID field, and moved the information to the data portion of the packet. - Changed default verbosity level from debug to verbose. 0.50 - 7. Dec 2004 Initial public release. ptunnel-ng-1.42/INSTALL000066400000000000000000000366101346103123100145600ustar00rootroot00000000000000Installation Instructions ************************* Copyright (C) 1994-1996, 1999-2002, 2004-2013 Free Software Foundation, Inc. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. This file is offered as-is, without warranty of any kind. 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Until the limitation is lifted, you can use this workaround: CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash `configure' Invocation ====================== `configure' recognizes the following options to control how it operates. `--help' `-h' Print a summary of all of the options to `configure', and exit. `--help=short' `--help=recursive' Print a summary of the options unique to this package's `configure', and exit. The `short' variant lists options used only in the top level, while the `recursive' variant lists options also present in any nested packages. `--version' `-V' Print the version of Autoconf used to generate the `configure' script, and exit. `--cache-file=FILE' Enable the cache: use and save the results of the tests in FILE, traditionally `config.cache'. FILE defaults to `/dev/null' to disable caching. `--config-cache' `-C' Alias for `--cache-file=config.cache'. `--quiet' `--silent' `-q' Do not print messages saying which checks are being made. 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(Ping Tunnel, ICMP Echo Tunnel, UDP Tunnel)" arch=('i686' 'x86_64') url='https://www.github.com/lnslbrty/ptunnel-ng' license=('BSD-3') makedepends=('git') provides=("ptunnel-ng=${pkgver}") source=("https://github.com/lnslbrty/ptunnel-ng/archive/v${pkgver}.tar.gz") md5sums=('cbb9a17ed0ac728170e03f4fa618a617') build() { cd "${srcdir}/${pkgname}-${pkgver}" ./configure \ --prefix=/usr \ --libdir=/usr/lib \ --disable-pcap \ --disable-selinux make } package() { cd "${srcdir}/${pkgname}-${pkgver}" make DESTDIR="${pkgdir}" install find "${pkgdir}" -type d -name .git -exec rm -r '{}' + install -D -m644 COPYING "${pkgdir}/usr/share/licenses/ptunnel-ng/LICENSE" } ptunnel-ng-1.42/PKGBUILD.dev000066400000000000000000000017761346103123100154350ustar00rootroot00000000000000# use `makepkg -p PKGBUILD.dev --skipchecksums' to build the pkg pkgname="ptunnel-ng" pkgver=master pkgrel=1 pkgdesc="A TCP forwarder and proxy used for ICMP/UDP tunneling without creating tun devices. (Ping Tunnel, ICMP Echo Tunnel, UDP Tunnel)" arch=('i686' 'x86_64') url='https://www.github.com/lnslbrty/ptunnel-ng' license=('BSD-3') makedepends=('git') provides=("ptunnel-ng=${pkgver}") source=("https://github.com/lnslbrty/ptunnel-ng/archive/master.zip") build() { cd "${srcdir}/${pkgname}-${pkgver}" autoreconf -fi ./configure \ --prefix=/usr \ --libdir=/usr/lib \ --disable-pcap \ --disable-selinux make V=s } package() { cd "${srcdir}/${pkgname}-${pkgver}" make DESTDIR="${pkgdir}" install find "${pkgdir}" -type d -name .git -exec rm -r '{}' + install -D -m644 COPYING "${pkgdir}/usr/share/licenses/ptunnel-ng/LICENSE" install -D -m644 contrib/ptunnel-ng.conf "${pkgdir}/etc/conf.d/ptunnel-ng" install -D -m644 contrib/ptunnel-ng.service "${pkgdir}/etc/systemd/system/ptunnel-ng.service" } ptunnel-ng-1.42/README000066400000000000000000000123031346103123100144000ustar00rootroot00000000000000PingTunnel-[N]ew[G]eneration Read Me ==================================== What is ptunnel-ng? ---------------- Ptunnel-NG is a bugfixed and refactored version of Ptunnel with some additional features e.g. change the magic value without recompiling (bypass Cisco IPS). What is ptunnel? ---------------- Ptunnel is an application that allows you to reliably tunnel TCP connections to a remote host using ICMP echo request and reply packets, commonly known as ping requests and replies. Contact details --------------- The ptunnel-ng fork was done by Toni Uhlig: You can contact the author of ptunnel, Daniel Stoedle, here: The official ptunnel website is located here: Dependencies ------------ Required: pthread Optional: pcap, selinux Compiling --------- Either run "./autogen.sh" for a fully automatic build or run it manually with: "./configure && make" You should end up with a binary called ptunnel-ng. This serves as both the client and proxy. You can optionally install it using "make install". To compile the Windows binary. You will need mingw installed. If you want pcap support you will need the WinPcap library as well. WinPcap is available here: REMEMBER: ptunnel-ng might not work on Windows without WinPcap! Running ------- Ptunnel works best when starting as root, and usually requires starting as root. Common ptunnel-ng options: Proxy(Server): ./ptunnel-ng -r -R -v -P -u -g Forwarder(Client): ./ptunnel-ng -p
-l -r -R -v -P -u -g The -p switch sets the address of the host on which the proxy is running. A quick test to see if the proxy will work is simply to try pinging this host - if you get replies, you should be able to make the tunnel work. If pinging works but you are not able to establish a tunnel, you should play around with the -m switch and change the magic value. A IDS/IPS or Firwall might try to fool you. The -l, -r and -R switches set the local listening port, destination address and destination port. For instance, to tunnel ssh connections from the client machine via a proxy running on proxy.pingtunnel.com to the computer login.domain.com, the following command line would be used: sudo ./ptunnel-ng -p proxy.pingtunnel.com -l 8000 -r login.domain.com -R 22 An ssh connection to login.domain.com can now be established as follows: ssh -p 8000 localhost If ssh complains about potential man-in-the-middle attacks, simply remove the offending key from the known_hosts file. The warning/error is expected if you have previously ssh'd to your local computer (i.e., ssh localhost), or you have used ptunnel-ng to forward ssh connections to different hosts. Of course, for all of this to work, you need to start the proxy on your proxy-computer (we'll call it proxy.pingtunnel.com here). Doing this is very simple: sudo ./ptunnel-ng If you find that the proxy isn't working, you will need to enable packet capturing on the main network device. Currently this device is assumed to be an ethernet-device (i.e., ethernet or wireless). Packet capturing is enabled by giving the -L switch, and supplying the device name to capture packets on (for instance eth0 or en1). The same goes for the client. On versions of Mac OS X prior to 10.4 (Tiger), packet capturing must always be enabled (both for proxy and client), as resent packets won't be received otherwise. To protect yourself from others using your proxy, you can protect access to it with a password using the -P switch. The password is never sent in the clear, but keep in mind that it may be visible from tools like top or ps, which can display the command line used to start an application. Finally, the -u switch will attempt to run the proxy in unprivileged mode (i.e., no need for root access), and the -v switch controls the amount of output from ptunnel-ng. -1 indicates no output, 0 shows errors only, 1 shows info messages, 2 gives more output, 3 provides even more output, level 4 displays debug info and level 5 displays absolutely everything, including the nasty details of sends and receives. The -o switch allows output to be saved to a logfile. Security features: Please see the ptunnel-ng man-page for instructions. Supported operating systems --------------------------- Ptunnel supports most operating systems with libpcap, the usual POSIX functions and a BSD sockets compatible API. In particular, it has been tested on Linux Fedora Core 2 and Mac OS X 10.3.6 and above. As of version 0.7, ptunnel-ng can also be compiled on Windows, courtesy of Mike Miller, assuming mingw and WinPcap is installed. TODOs ----- - challenge response: switch from md5 to sha-512 - packet obfuscation - encryption (metadata + payload) Credits and contributors ------------------------ Daniel Stoedle et al. License ------- Ping Tunnel NG is Copyright (c) 2017-2019, Toni Uhlig , All rights reserved. Ping Tunnel NG is licensed under the BSD License. Please see the COPYING file for details. ptunnel-ng-1.42/README.md000066400000000000000000000145501346103123100150050ustar00rootroot00000000000000[![Travis Build Status](https://travis-ci.org/lnslbrty/ptunnel-ng.svg?branch=master)](https://travis-ci.org/lnslbrty/ptunnel-ng) [![Gitlab Build Status](https://gitlab.com/lnslbrty/ptunnel-ng/badges/master/build.svg)](https://gitlab.com/lnslbrty/ptunnel-ng) [![Coverity Status](https://scan.coverity.com/projects/14737/badge.svg?flat=1)](https://scan.coverity.com/projects/14737) [![Codacy Badge](https://api.codacy.com/project/badge/Grade/021aa1d88dd7486db83df3ff96f9eff8)](https://www.codacy.com/app/lnslbrty/ptunnel-ng?utm_source=github.com&utm_medium=referral&utm_content=lnslbrty/ptunnel-ng&utm_campaign=Badge_Grade) [![GitHub issues](https://img.shields.io/github/issues/lnslbrty/ptunnel-ng.svg)](https://github.com/lnslbrty/ptunnel-ng/issues) [![GitHub license](https://img.shields.io/github/license/lnslbrty/ptunnel-ng.svg)](https://github.com/lnslbrty/ptunnel-ng/blob/master/COPYING) [![Gitter chat](https://badges.gitter.im/ptunnel-ng/Lobby.png)](https://gitter.im/ptunnel-ng/Lobby) # PingTunnel-[N]ew[G]eneration Read Me ## What is ptunnel-ng? ``` Ptunnel-NG is a bugfixed and refactored version of Ptunnel with some additional features e.g. change the magic value without recompiling (bypass Cisco IPS). ``` ## What is ptunnel? ``` Ptunnel is an application that allows you to reliably tunnel TCP connections to a remote host using ICMP echo request and reply packets, commonly known as ping requests and replies. ``` ## How does it work? ``` ICMP Packet structure ``` ![Ptunnel Packet Structure](https://github.com/lnslbrty/ptunnel-ng/raw/master/web/packet-format.png) ``` Ptunnel program setup ``` ![Ptunnel Setup](https://github.com/lnslbrty/ptunnel-ng/raw/master/web/setup.png) ## Contact details ``` The ptunnel-ng fork was done by Toni Uhlig: You can contact the author of ptunnel, Daniel Stoedle, here: The official ptunnel website is located here: ``` ## Dependencies ``` Required: pthread Optional: pcap, selinux ``` ## Compiling ``` Either run "./autogen.sh" for a fully automatic build or run it manually with: "./configure && make" You should end up with a binary called ptunnel-ng. This serves as both the client and proxy. You can optionally install it using "make install". To compile the Windows binary. You will need mingw installed. If you want pcap support you will need the WinPcap library as well. WinPcap is available here: REMEMBER: ptunnel-ng might not work on Windows without WinPcap! ``` ## Running ``` Ptunnel works best when starting as root, and usually requires starting as root. Common ptunnel-ng options: Proxy(Server): ./ptunnel-ng -r -R -v -P -u -g Forwarder(Client): ./ptunnel-ng -p
-l -r -R -v -P -u -g The -p switch sets the address of the host on which the proxy is running. A quick test to see if the proxy will work is simply to try pinging this host - if you get replies, you should be able to make the tunnel work. If pinging works but you are not able to establish a tunnel, you should play around with the -m switch and change the magic value. A IDS/IPS or Firwall might try to fool you. The -l, -r and -R switches set the local listening port, destination address and destination port. For instance, to tunnel ssh connections from the client machine via a proxy running on proxy.pingtunnel.com to the computer login.domain.com, the following command line would be used: sudo ./ptunnel-ng -p proxy.pingtunnel.com -l 8000 -r login.domain.com -R 22 An ssh connection to login.domain.com can now be established as follows: ssh -p 8000 localhost If ssh complains about potential man-in-the-middle attacks, simply remove the offending key from the known_hosts file. The warning/error is expected if you have previously ssh'd to your local computer (i.e., ssh localhost), or you have used ptunnel-ng to forward ssh connections to different hosts. Of course, for all of this to work, you need to start the proxy on your proxy-computer (we'll call it proxy.pingtunnel.com here). Doing this is very simple: sudo ./ptunnel-ng If you find that the proxy isn't working, you will need to enable packet capturing on the main network device. Currently this device is assumed to be an ethernet-device (i.e., ethernet or wireless). Packet capturing is enabled by giving the -L switch, and supplying the device name to capture packets on (for instance eth0 or en1). The same goes for the client. On versions of Mac OS X prior to 10.4 (Tiger), packet capturing must always be enabled (both for proxy and client), as resent packets won't be received otherwise. To protect yourself from others using your proxy, you can protect access to it with a password using the -P switch. The password is never sent in the clear, but keep in mind that it may be visible from tools like top or ps, which can display the command line used to start an application. Finally, the -u switch will attempt to run the proxy in unprivileged mode (i.e., no need for root access), and the -v switch controls the amount of output from ptunnel-ng. -1 indicates no output, 0 shows errors only, 1 shows info messages, 2 gives more output, 3 provides even more output, level 4 displays debug info and level 5 displays absolutely everything, including the nasty details of sends and receives. The -o switch allows output to be saved to a logfile. Security features: Please see the ptunnel-ng man-page for instructions. ``` ## Supported operating systems ``` Ptunnel supports most operating systems with libpcap, the usual POSIX functions and a BSD sockets compatible API. In particular, it has been tested on Linux Fedora Core 2 and Mac OS X 10.3.6 and above. As of version 0.7, ptunnel-ng can also be compiled on Windows, courtesy of Mike Miller, assuming mingw and WinPcap is installed. ``` ## TODOs ``` - challenge response: switch from md5 to sha-512 - packet obfuscation - encryption (metadata + payload) ``` ## Credits and contributors ``` Daniel Stoedle et al. ``` ## License ``` Ping Tunnel NG is Copyright (c) 2017-2019, Toni Uhlig , All rights reserved. Ping Tunnel NG is licensed under the BSD License. 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I hope that # covers most systems running today. This code pipes the CPU # types through head -n 1, so we only detect the type of CPU 0. ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^ The alpha \(.*\) processor.*$/\1/p' | head -n 1` case "$ALPHA_CPU_TYPE" in "EV4 (21064)") UNAME_MACHINE=alpha ;; "EV4.5 (21064)") UNAME_MACHINE=alpha ;; "LCA4 (21066/21068)") UNAME_MACHINE=alpha ;; "EV5 (21164)") UNAME_MACHINE=alphaev5 ;; "EV5.6 (21164A)") UNAME_MACHINE=alphaev56 ;; "EV5.6 (21164PC)") UNAME_MACHINE=alphapca56 ;; "EV5.7 (21164PC)") UNAME_MACHINE=alphapca57 ;; "EV6 (21264)") UNAME_MACHINE=alphaev6 ;; "EV6.7 (21264A)") UNAME_MACHINE=alphaev67 ;; "EV6.8CB (21264C)") UNAME_MACHINE=alphaev68 ;; "EV6.8AL (21264B)") UNAME_MACHINE=alphaev68 ;; "EV6.8CX (21264D)") UNAME_MACHINE=alphaev68 ;; "EV6.9A (21264/EV69A)") UNAME_MACHINE=alphaev69 ;; "EV7 (21364)") UNAME_MACHINE=alphaev7 ;; "EV7.9 (21364A)") UNAME_MACHINE=alphaev79 ;; esac # A Pn.n version is a patched version. # A Vn.n version is a released version. # A Tn.n version is a released field test version. # A Xn.n version is an unreleased experimental baselevel. # 1.2 uses "1.2" for uname -r. echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz` # Reset EXIT trap before exiting to avoid spurious non-zero exit code. exitcode=$? trap '' 0 exit $exitcode ;; Alpha\ *:Windows_NT*:*) # How do we know it's Interix rather than the generic POSIX subsystem? # Should we change UNAME_MACHINE based on the output of uname instead # of the specific Alpha model? echo alpha-pc-interix exit ;; 21064:Windows_NT:50:3) echo alpha-dec-winnt3.5 exit ;; Amiga*:UNIX_System_V:4.0:*) echo m68k-unknown-sysv4 exit ;; *:[Aa]miga[Oo][Ss]:*:*) echo ${UNAME_MACHINE}-unknown-amigaos exit ;; *:[Mm]orph[Oo][Ss]:*:*) echo ${UNAME_MACHINE}-unknown-morphos exit ;; *:OS/390:*:*) echo i370-ibm-openedition exit ;; *:z/VM:*:*) echo s390-ibm-zvmoe exit ;; *:OS400:*:*) echo powerpc-ibm-os400 exit ;; arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*) echo arm-acorn-riscix${UNAME_RELEASE} exit ;; arm*:riscos:*:*|arm*:RISCOS:*:*) echo arm-unknown-riscos exit ;; SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*) echo hppa1.1-hitachi-hiuxmpp exit ;; Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*) # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE. if test "`(/bin/universe) 2>/dev/null`" = att ; then echo pyramid-pyramid-sysv3 else echo pyramid-pyramid-bsd fi exit ;; NILE*:*:*:dcosx) echo pyramid-pyramid-svr4 exit ;; DRS?6000:unix:4.0:6*) echo sparc-icl-nx6 exit ;; DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*) case `/usr/bin/uname -p` in sparc) echo sparc-icl-nx7; exit ;; esac ;; s390x:SunOS:*:*) echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` exit ;; sun4H:SunOS:5.*:*) echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` exit ;; sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*) echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` exit ;; i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*) echo i386-pc-auroraux${UNAME_RELEASE} exit ;; i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*) eval $set_cc_for_build SUN_ARCH=i386 # If there is a compiler, see if it is configured for 64-bit objects. # Note that the Sun cc does not turn __LP64__ into 1 like gcc does. # This test works for both compilers. if [ "$CC_FOR_BUILD" != no_compiler_found ]; then if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \ (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ grep IS_64BIT_ARCH >/dev/null then SUN_ARCH=x86_64 fi fi echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` exit ;; sun4*:SunOS:6*:*) # According to config.sub, this is the proper way to canonicalize # SunOS6. Hard to guess exactly what SunOS6 will be like, but # it's likely to be more like Solaris than SunOS4. echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` exit ;; sun4*:SunOS:*:*) case "`/usr/bin/arch -k`" in Series*|S4*) UNAME_RELEASE=`uname -v` ;; esac # Japanese Language versions have a version number like `4.1.3-JL'. echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'` exit ;; sun3*:SunOS:*:*) echo m68k-sun-sunos${UNAME_RELEASE} exit ;; sun*:*:4.2BSD:*) UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null` test "x${UNAME_RELEASE}" = x && UNAME_RELEASE=3 case "`/bin/arch`" in sun3) echo m68k-sun-sunos${UNAME_RELEASE} ;; sun4) echo sparc-sun-sunos${UNAME_RELEASE} ;; esac exit ;; aushp:SunOS:*:*) echo sparc-auspex-sunos${UNAME_RELEASE} exit ;; # The situation for MiNT is a little confusing. The machine name # can be virtually everything (everything which is not # "atarist" or "atariste" at least should have a processor # > m68000). The system name ranges from "MiNT" over "FreeMiNT" # to the lowercase version "mint" (or "freemint"). Finally # the system name "TOS" denotes a system which is actually not # MiNT. But MiNT is downward compatible to TOS, so this should # be no problem. atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*) echo m68k-atari-mint${UNAME_RELEASE} exit ;; milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*) echo m68k-milan-mint${UNAME_RELEASE} exit ;; hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*) echo m68k-hades-mint${UNAME_RELEASE} exit ;; *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*) echo m68k-unknown-mint${UNAME_RELEASE} exit ;; m68k:machten:*:*) echo m68k-apple-machten${UNAME_RELEASE} exit ;; powerpc:machten:*:*) echo powerpc-apple-machten${UNAME_RELEASE} exit ;; RISC*:Mach:*:*) echo mips-dec-mach_bsd4.3 exit ;; RISC*:ULTRIX:*:*) echo mips-dec-ultrix${UNAME_RELEASE} exit ;; VAX*:ULTRIX*:*:*) echo vax-dec-ultrix${UNAME_RELEASE} exit ;; 2020:CLIX:*:* | 2430:CLIX:*:*) echo clipper-intergraph-clix${UNAME_RELEASE} exit ;; mips:*:*:UMIPS | mips:*:*:RISCos) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #ifdef __cplusplus #include /* for printf() prototype */ int main (int argc, char *argv[]) { #else int main (argc, argv) int argc; char *argv[]; { #endif #if defined (host_mips) && defined (MIPSEB) #if defined (SYSTYPE_SYSV) printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_SVR4) printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0); #endif #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0); #endif #endif exit (-1); } EOF $CC_FOR_BUILD -o $dummy $dummy.c && dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` && SYSTEM_NAME=`$dummy $dummyarg` && { echo "$SYSTEM_NAME"; exit; } echo mips-mips-riscos${UNAME_RELEASE} exit ;; Motorola:PowerMAX_OS:*:*) echo powerpc-motorola-powermax exit ;; Motorola:*:4.3:PL8-*) echo powerpc-harris-powermax exit ;; Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*) echo powerpc-harris-powermax exit ;; Night_Hawk:Power_UNIX:*:*) echo powerpc-harris-powerunix exit ;; m88k:CX/UX:7*:*) echo m88k-harris-cxux7 exit ;; m88k:*:4*:R4*) echo m88k-motorola-sysv4 exit ;; m88k:*:3*:R3*) echo m88k-motorola-sysv3 exit ;; AViiON:dgux:*:*) # DG/UX returns AViiON for all architectures UNAME_PROCESSOR=`/usr/bin/uname -p` if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ] then if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \ [ ${TARGET_BINARY_INTERFACE}x = x ] then echo m88k-dg-dgux${UNAME_RELEASE} else echo m88k-dg-dguxbcs${UNAME_RELEASE} fi else echo i586-dg-dgux${UNAME_RELEASE} fi exit ;; M88*:DolphinOS:*:*) # DolphinOS (SVR3) echo m88k-dolphin-sysv3 exit ;; M88*:*:R3*:*) # Delta 88k system running SVR3 echo m88k-motorola-sysv3 exit ;; XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) echo m88k-tektronix-sysv3 exit ;; Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) echo m68k-tektronix-bsd exit ;; *:IRIX*:*:*) echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'` exit ;; ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id exit ;; # Note that: echo "'`uname -s`'" gives 'AIX ' i*86:AIX:*:*) echo i386-ibm-aix exit ;; ia64:AIX:*:*) if [ -x /usr/bin/oslevel ] ; then IBM_REV=`/usr/bin/oslevel` else IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} fi echo ${UNAME_MACHINE}-ibm-aix${IBM_REV} exit ;; *:AIX:2:3) if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #include main() { if (!__power_pc()) exit(1); puts("powerpc-ibm-aix3.2.5"); exit(0); } EOF if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` then echo "$SYSTEM_NAME" else echo rs6000-ibm-aix3.2.5 fi elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then echo rs6000-ibm-aix3.2.4 else echo rs6000-ibm-aix3.2 fi exit ;; *:AIX:*:[4567]) IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'` if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then IBM_ARCH=rs6000 else IBM_ARCH=powerpc fi if [ -x /usr/bin/lslpp ] ; then IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc | awk -F: '{ print $3 }' | sed s/[0-9]*$/0/` else IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE} fi echo ${IBM_ARCH}-ibm-aix${IBM_REV} exit ;; *:AIX:*:*) echo rs6000-ibm-aix exit ;; ibmrt:4.4BSD:*|romp-ibm:BSD:*) echo romp-ibm-bsd4.4 exit ;; ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to exit ;; # report: romp-ibm BSD 4.3 *:BOSX:*:*) echo rs6000-bull-bosx exit ;; DPX/2?00:B.O.S.:*:*) echo m68k-bull-sysv3 exit ;; 9000/[34]??:4.3bsd:1.*:*) echo m68k-hp-bsd exit ;; hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) echo m68k-hp-bsd4.4 exit ;; 9000/[34678]??:HP-UX:*:*) HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` case "${UNAME_MACHINE}" in 9000/31? ) HP_ARCH=m68000 ;; 9000/[34]?? ) HP_ARCH=m68k ;; 9000/[678][0-9][0-9]) if [ -x /usr/bin/getconf ]; then sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null` sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null` case "${sc_cpu_version}" in 523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0 528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1 532) # CPU_PA_RISC2_0 case "${sc_kernel_bits}" in 32) HP_ARCH=hppa2.0n ;; 64) HP_ARCH=hppa2.0w ;; '') HP_ARCH=hppa2.0 ;; # HP-UX 10.20 esac ;; esac fi if [ "${HP_ARCH}" = "" ]; then eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #define _HPUX_SOURCE #include #include int main () { #if defined(_SC_KERNEL_BITS) long bits = sysconf(_SC_KERNEL_BITS); #endif long cpu = sysconf (_SC_CPU_VERSION); switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0"); break; case CPU_PA_RISC1_1: puts ("hppa1.1"); break; case CPU_PA_RISC2_0: #if defined(_SC_KERNEL_BITS) switch (bits) { case 64: puts ("hppa2.0w"); break; case 32: puts ("hppa2.0n"); break; default: puts ("hppa2.0"); break; } break; #else /* !defined(_SC_KERNEL_BITS) */ puts ("hppa2.0"); break; #endif default: puts ("hppa1.0"); break; } exit (0); } EOF (CCOPTS="" $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy` test -z "$HP_ARCH" && HP_ARCH=hppa fi ;; esac if [ ${HP_ARCH} = hppa2.0w ] then eval $set_cc_for_build # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler # generating 64-bit code. GNU and HP use different nomenclature: # # $ CC_FOR_BUILD=cc ./config.guess # => hppa2.0w-hp-hpux11.23 # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess # => hppa64-hp-hpux11.23 if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | grep -q __LP64__ then HP_ARCH=hppa2.0w else HP_ARCH=hppa64 fi fi echo ${HP_ARCH}-hp-hpux${HPUX_REV} exit ;; ia64:HP-UX:*:*) HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` echo ia64-hp-hpux${HPUX_REV} exit ;; 3050*:HI-UX:*:*) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #include int main () { long cpu = sysconf (_SC_CPU_VERSION); /* The order matters, because CPU_IS_HP_MC68K erroneously returns true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct results, however. */ if (CPU_IS_PA_RISC (cpu)) { switch (cpu) { case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; default: puts ("hppa-hitachi-hiuxwe2"); break; } } else if (CPU_IS_HP_MC68K (cpu)) puts ("m68k-hitachi-hiuxwe2"); else puts ("unknown-hitachi-hiuxwe2"); exit (0); } EOF $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` && { echo "$SYSTEM_NAME"; exit; } echo unknown-hitachi-hiuxwe2 exit ;; 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) echo hppa1.1-hp-bsd exit ;; 9000/8??:4.3bsd:*:*) echo hppa1.0-hp-bsd exit ;; *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*) echo hppa1.0-hp-mpeix exit ;; hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) echo hppa1.1-hp-osf exit ;; hp8??:OSF1:*:*) echo hppa1.0-hp-osf exit ;; i*86:OSF1:*:*) if [ -x /usr/sbin/sysversion ] ; then echo ${UNAME_MACHINE}-unknown-osf1mk else echo ${UNAME_MACHINE}-unknown-osf1 fi exit ;; parisc*:Lites*:*:*) echo hppa1.1-hp-lites exit ;; C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) echo c1-convex-bsd exit ;; C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) if getsysinfo -f scalar_acc then echo c32-convex-bsd else echo c2-convex-bsd fi exit ;; C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) echo c34-convex-bsd exit ;; C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) echo c38-convex-bsd exit ;; C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) echo c4-convex-bsd exit ;; CRAY*Y-MP:*:*:*) echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*[A-Z]90:*:*:*) echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \ -e 's/\.[^.]*$/.X/' exit ;; CRAY*TS:*:*:*) echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*T3E:*:*:*) echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; CRAY*SV1:*:*:*) echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; *:UNICOS/mp:*:*) echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/' exit ;; F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*) FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz` FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" exit ;; 5000:UNIX_System_V:4.*:*) FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'` FUJITSU_REL=`echo ${UNAME_RELEASE} | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'` echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" exit ;; i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*) echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} exit ;; sparc*:BSD/OS:*:*) echo sparc-unknown-bsdi${UNAME_RELEASE} exit ;; *:BSD/OS:*:*) echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE} exit ;; *:FreeBSD:*:*) UNAME_PROCESSOR=`/usr/bin/uname -p` case ${UNAME_PROCESSOR} in amd64) echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; *) echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;; esac exit ;; i*:CYGWIN*:*) echo ${UNAME_MACHINE}-pc-cygwin exit ;; *:MINGW64*:*) echo ${UNAME_MACHINE}-pc-mingw64 exit ;; *:MINGW*:*) echo ${UNAME_MACHINE}-pc-mingw32 exit ;; *:MSYS*:*) echo ${UNAME_MACHINE}-pc-msys exit ;; i*:windows32*:*) # uname -m includes "-pc" on this system. echo ${UNAME_MACHINE}-mingw32 exit ;; i*:PW*:*) echo ${UNAME_MACHINE}-pc-pw32 exit ;; *:Interix*:*) case ${UNAME_MACHINE} in x86) echo i586-pc-interix${UNAME_RELEASE} exit ;; authenticamd | genuineintel | EM64T) echo x86_64-unknown-interix${UNAME_RELEASE} exit ;; IA64) echo ia64-unknown-interix${UNAME_RELEASE} exit ;; esac ;; [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*) echo i${UNAME_MACHINE}-pc-mks exit ;; 8664:Windows_NT:*) echo x86_64-pc-mks exit ;; i*:Windows_NT*:* | Pentium*:Windows_NT*:*) # How do we know it's Interix rather than the generic POSIX subsystem? # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we # UNAME_MACHINE based on the output of uname instead of i386? echo i586-pc-interix exit ;; i*:UWIN*:*) echo ${UNAME_MACHINE}-pc-uwin exit ;; amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*) echo x86_64-unknown-cygwin exit ;; p*:CYGWIN*:*) echo powerpcle-unknown-cygwin exit ;; prep*:SunOS:5.*:*) echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` exit ;; *:GNU:*:*) # the GNU system echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-${LIBC}`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'` exit ;; *:GNU/*:*:*) # other systems with GNU libc and userland echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]"``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-${LIBC} exit ;; i*86:Minix:*:*) echo ${UNAME_MACHINE}-pc-minix exit ;; aarch64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; aarch64_be:Linux:*:*) UNAME_MACHINE=aarch64_be echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; alpha:Linux:*:*) case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in EV5) UNAME_MACHINE=alphaev5 ;; EV56) UNAME_MACHINE=alphaev56 ;; PCA56) UNAME_MACHINE=alphapca56 ;; PCA57) UNAME_MACHINE=alphapca56 ;; EV6) UNAME_MACHINE=alphaev6 ;; EV67) UNAME_MACHINE=alphaev67 ;; EV68*) UNAME_MACHINE=alphaev68 ;; esac objdump --private-headers /bin/sh | grep -q ld.so.1 if test "$?" = 0 ; then LIBC=gnulibc1 ; fi echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; arc:Linux:*:* | arceb:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; arm*:Linux:*:*) eval $set_cc_for_build if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_EABI__ then echo ${UNAME_MACHINE}-unknown-linux-${LIBC} else if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \ | grep -q __ARM_PCS_VFP then echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabi else echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabihf fi fi exit ;; avr32*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; cris:Linux:*:*) echo ${UNAME_MACHINE}-axis-linux-${LIBC} exit ;; crisv32:Linux:*:*) echo ${UNAME_MACHINE}-axis-linux-${LIBC} exit ;; e2k:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; frv:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; hexagon:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; i*86:Linux:*:*) echo ${UNAME_MACHINE}-pc-linux-${LIBC} exit ;; ia64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; k1om:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; m32r*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; m68*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; mips:Linux:*:* | mips64:Linux:*:*) eval $set_cc_for_build sed 's/^ //' << EOF >$dummy.c #undef CPU #undef ${UNAME_MACHINE} #undef ${UNAME_MACHINE}el #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL) CPU=${UNAME_MACHINE}el #else #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB) CPU=${UNAME_MACHINE} #else CPU= #endif #endif EOF eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'` test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; } ;; mips64el:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; openrisc*:Linux:*:*) echo or1k-unknown-linux-${LIBC} exit ;; or32:Linux:*:* | or1k*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; padre:Linux:*:*) echo sparc-unknown-linux-${LIBC} exit ;; parisc64:Linux:*:* | hppa64:Linux:*:*) echo hppa64-unknown-linux-${LIBC} exit ;; parisc:Linux:*:* | hppa:Linux:*:*) # Look for CPU level case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in PA7*) echo hppa1.1-unknown-linux-${LIBC} ;; PA8*) echo hppa2.0-unknown-linux-${LIBC} ;; *) echo hppa-unknown-linux-${LIBC} ;; esac exit ;; ppc64:Linux:*:*) echo powerpc64-unknown-linux-${LIBC} exit ;; ppc:Linux:*:*) echo powerpc-unknown-linux-${LIBC} exit ;; ppc64le:Linux:*:*) echo powerpc64le-unknown-linux-${LIBC} exit ;; ppcle:Linux:*:*) echo powerpcle-unknown-linux-${LIBC} exit ;; riscv32:Linux:*:* | riscv64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; s390:Linux:*:* | s390x:Linux:*:*) echo ${UNAME_MACHINE}-ibm-linux-${LIBC} exit ;; sh64*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; sh*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; sparc:Linux:*:* | sparc64:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; tile*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; vax:Linux:*:*) echo ${UNAME_MACHINE}-dec-linux-${LIBC} exit ;; x86_64:Linux:*:*) echo ${UNAME_MACHINE}-pc-linux-${LIBC} exit ;; xtensa*:Linux:*:*) echo ${UNAME_MACHINE}-unknown-linux-${LIBC} exit ;; i*86:DYNIX/ptx:4*:*) # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. # earlier versions are messed up and put the nodename in both # sysname and nodename. echo i386-sequent-sysv4 exit ;; i*86:UNIX_SV:4.2MP:2.*) # Unixware is an offshoot of SVR4, but it has its own version # number series starting with 2... # I am not positive that other SVR4 systems won't match this, # I just have to hope. -- rms. # Use sysv4.2uw... so that sysv4* matches it. echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} exit ;; i*86:OS/2:*:*) # If we were able to find `uname', then EMX Unix compatibility # is probably installed. echo ${UNAME_MACHINE}-pc-os2-emx exit ;; i*86:XTS-300:*:STOP) echo ${UNAME_MACHINE}-unknown-stop exit ;; i*86:atheos:*:*) echo ${UNAME_MACHINE}-unknown-atheos exit ;; i*86:syllable:*:*) echo ${UNAME_MACHINE}-pc-syllable exit ;; i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*) echo i386-unknown-lynxos${UNAME_RELEASE} exit ;; i*86:*DOS:*:*) echo ${UNAME_MACHINE}-pc-msdosdjgpp exit ;; i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*) UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'` if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL} else echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL} fi exit ;; i*86:*:5:[678]*) # UnixWare 7.x, OpenUNIX and OpenServer 6. case `/bin/uname -X | grep "^Machine"` in *486*) UNAME_MACHINE=i486 ;; *Pentium) UNAME_MACHINE=i586 ;; *Pent*|*Celeron) UNAME_MACHINE=i686 ;; esac echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION} exit ;; i*86:*:3.2:*) if test -f /usr/options/cb.name; then UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')` (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486 (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \ && UNAME_MACHINE=i586 (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \ && UNAME_MACHINE=i686 (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \ && UNAME_MACHINE=i686 echo ${UNAME_MACHINE}-pc-sco$UNAME_REL else echo ${UNAME_MACHINE}-pc-sysv32 fi exit ;; pc:*:*:*) # Left here for compatibility: # uname -m prints for DJGPP always 'pc', but it prints nothing about # the processor, so we play safe by assuming i586. # Note: whatever this is, it MUST be the same as what config.sub # prints for the "djgpp" host, or else GDB configure will decide that # this is a cross-build. echo i586-pc-msdosdjgpp exit ;; Intel:Mach:3*:*) echo i386-pc-mach3 exit ;; paragon:*:*:*) echo i860-intel-osf1 exit ;; i860:*:4.*:*) # i860-SVR4 if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 else # Add other i860-SVR4 vendors below as they are discovered. echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 fi exit ;; mini*:CTIX:SYS*5:*) # "miniframe" echo m68010-convergent-sysv exit ;; mc68k:UNIX:SYSTEM5:3.51m) echo m68k-convergent-sysv exit ;; M680?0:D-NIX:5.3:*) echo m68k-diab-dnix exit ;; M68*:*:R3V[5678]*:*) test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;; 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0) OS_REL='' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4; exit; } ;; NCR*:*:4.2:* | MPRAS*:*:4.2:*) OS_REL='.3' test -r /etc/.relid \ && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ && { echo i486-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \ && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;; m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*) echo m68k-unknown-lynxos${UNAME_RELEASE} exit ;; mc68030:UNIX_System_V:4.*:*) echo m68k-atari-sysv4 exit ;; TSUNAMI:LynxOS:2.*:*) echo sparc-unknown-lynxos${UNAME_RELEASE} exit ;; rs6000:LynxOS:2.*:*) echo rs6000-unknown-lynxos${UNAME_RELEASE} exit ;; PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*) echo powerpc-unknown-lynxos${UNAME_RELEASE} exit ;; SM[BE]S:UNIX_SV:*:*) echo mips-dde-sysv${UNAME_RELEASE} exit ;; RM*:ReliantUNIX-*:*:*) echo mips-sni-sysv4 exit ;; RM*:SINIX-*:*:*) echo mips-sni-sysv4 exit ;; *:SINIX-*:*:*) if uname -p 2>/dev/null >/dev/null ; then UNAME_MACHINE=`(uname -p) 2>/dev/null` echo ${UNAME_MACHINE}-sni-sysv4 else echo ns32k-sni-sysv fi exit ;; PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort # says echo i586-unisys-sysv4 exit ;; *:UNIX_System_V:4*:FTX*) # From Gerald Hewes . # How about differentiating between stratus architectures? -djm echo hppa1.1-stratus-sysv4 exit ;; *:*:*:FTX*) # From seanf@swdc.stratus.com. echo i860-stratus-sysv4 exit ;; i*86:VOS:*:*) # From Paul.Green@stratus.com. echo ${UNAME_MACHINE}-stratus-vos exit ;; *:VOS:*:*) # From Paul.Green@stratus.com. echo hppa1.1-stratus-vos exit ;; mc68*:A/UX:*:*) echo m68k-apple-aux${UNAME_RELEASE} exit ;; news*:NEWS-OS:6*:*) echo mips-sony-newsos6 exit ;; R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*) if [ -d /usr/nec ]; then echo mips-nec-sysv${UNAME_RELEASE} else echo mips-unknown-sysv${UNAME_RELEASE} fi exit ;; BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only. echo powerpc-be-beos exit ;; BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only. echo powerpc-apple-beos exit ;; BePC:BeOS:*:*) # BeOS running on Intel PC compatible. echo i586-pc-beos exit ;; BePC:Haiku:*:*) # Haiku running on Intel PC compatible. echo i586-pc-haiku exit ;; x86_64:Haiku:*:*) echo x86_64-unknown-haiku exit ;; SX-4:SUPER-UX:*:*) echo sx4-nec-superux${UNAME_RELEASE} exit ;; SX-5:SUPER-UX:*:*) echo sx5-nec-superux${UNAME_RELEASE} exit ;; SX-6:SUPER-UX:*:*) echo sx6-nec-superux${UNAME_RELEASE} exit ;; SX-7:SUPER-UX:*:*) echo sx7-nec-superux${UNAME_RELEASE} exit ;; SX-8:SUPER-UX:*:*) echo sx8-nec-superux${UNAME_RELEASE} exit ;; SX-8R:SUPER-UX:*:*) echo sx8r-nec-superux${UNAME_RELEASE} exit ;; SX-ACE:SUPER-UX:*:*) echo sxace-nec-superux${UNAME_RELEASE} exit ;; Power*:Rhapsody:*:*) echo powerpc-apple-rhapsody${UNAME_RELEASE} exit ;; *:Rhapsody:*:*) echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE} exit ;; *:Darwin:*:*) UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown eval $set_cc_for_build if test "$UNAME_PROCESSOR" = unknown ; then UNAME_PROCESSOR=powerpc fi if test `echo "$UNAME_RELEASE" | sed -e 's/\..*//'` -le 10 ; then if [ "$CC_FOR_BUILD" != no_compiler_found ]; then if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \ (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \ grep IS_64BIT_ARCH >/dev/null then case $UNAME_PROCESSOR in i386) UNAME_PROCESSOR=x86_64 ;; powerpc) UNAME_PROCESSOR=powerpc64 ;; esac fi fi elif test "$UNAME_PROCESSOR" = i386 ; then # Avoid executing cc on OS X 10.9, as it ships with a stub # that puts up a graphical alert prompting to install # developer tools. Any system running Mac OS X 10.7 or # later (Darwin 11 and later) is required to have a 64-bit # processor. This is not true of the ARM version of Darwin # that Apple uses in portable devices. UNAME_PROCESSOR=x86_64 fi echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE} exit ;; *:procnto*:*:* | *:QNX:[0123456789]*:*) UNAME_PROCESSOR=`uname -p` if test "$UNAME_PROCESSOR" = x86; then UNAME_PROCESSOR=i386 UNAME_MACHINE=pc fi echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE} exit ;; *:QNX:*:4*) echo i386-pc-qnx exit ;; NEO-?:NONSTOP_KERNEL:*:*) echo neo-tandem-nsk${UNAME_RELEASE} exit ;; NSE-*:NONSTOP_KERNEL:*:*) echo nse-tandem-nsk${UNAME_RELEASE} exit ;; NSR-?:NONSTOP_KERNEL:*:*) echo nsr-tandem-nsk${UNAME_RELEASE} exit ;; *:NonStop-UX:*:*) echo mips-compaq-nonstopux exit ;; BS2000:POSIX*:*:*) echo bs2000-siemens-sysv exit ;; DS/*:UNIX_System_V:*:*) echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE} exit ;; *:Plan9:*:*) # "uname -m" is not consistent, so use $cputype instead. 386 # is converted to i386 for consistency with other x86 # operating systems. if test "$cputype" = 386; then UNAME_MACHINE=i386 else UNAME_MACHINE="$cputype" fi echo ${UNAME_MACHINE}-unknown-plan9 exit ;; *:TOPS-10:*:*) echo pdp10-unknown-tops10 exit ;; *:TENEX:*:*) echo pdp10-unknown-tenex exit ;; KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*) echo pdp10-dec-tops20 exit ;; XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*) echo pdp10-xkl-tops20 exit ;; *:TOPS-20:*:*) echo pdp10-unknown-tops20 exit ;; *:ITS:*:*) echo pdp10-unknown-its exit ;; SEI:*:*:SEIUX) echo mips-sei-seiux${UNAME_RELEASE} exit ;; *:DragonFly:*:*) echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` exit ;; *:*VMS:*:*) UNAME_MACHINE=`(uname -p) 2>/dev/null` case "${UNAME_MACHINE}" in A*) echo alpha-dec-vms ; exit ;; I*) echo ia64-dec-vms ; exit ;; V*) echo vax-dec-vms ; exit ;; esac ;; *:XENIX:*:SysV) echo i386-pc-xenix exit ;; i*86:skyos:*:*) echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE} | sed -e 's/ .*$//'` exit ;; i*86:rdos:*:*) echo ${UNAME_MACHINE}-pc-rdos exit ;; i*86:AROS:*:*) echo ${UNAME_MACHINE}-pc-aros exit ;; x86_64:VMkernel:*:*) echo ${UNAME_MACHINE}-unknown-esx exit ;; amd64:Isilon\ OneFS:*:*) echo x86_64-unknown-onefs exit ;; esac cat >&2 </dev/null || echo unknown` uname -r = `(uname -r) 2>/dev/null || echo unknown` uname -s = `(uname -s) 2>/dev/null || echo unknown` uname -v = `(uname -v) 2>/dev/null || echo unknown` /usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null` /bin/uname -X = `(/bin/uname -X) 2>/dev/null` hostinfo = `(hostinfo) 2>/dev/null` /bin/universe = `(/bin/universe) 2>/dev/null` /usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null` /bin/arch = `(/bin/arch) 2>/dev/null` /usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null` /usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null` UNAME_MACHINE = ${UNAME_MACHINE} UNAME_RELEASE = ${UNAME_RELEASE} UNAME_SYSTEM = ${UNAME_SYSTEM} UNAME_VERSION = ${UNAME_VERSION} EOF exit 1 # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "timestamp='" # time-stamp-format: "%:y-%02m-%02d" # time-stamp-end: "'" # End: ptunnel-ng-1.42/config.sub000077500000000000000000001067631346103123100155210ustar00rootroot00000000000000#! /bin/sh # Configuration validation subroutine script. # Copyright 1992-2016 Free Software Foundation, Inc. timestamp='2016-11-04' # This file is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, see . # # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that # program. This Exception is an additional permission under section 7 # of the GNU General Public License, version 3 ("GPLv3"). # Please send patches to . # # Configuration subroutine to validate and canonicalize a configuration type. # Supply the specified configuration type as an argument. # If it is invalid, we print an error message on stderr and exit with code 1. # Otherwise, we print the canonical config type on stdout and succeed. # You can get the latest version of this script from: # http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub # This file is supposed to be the same for all GNU packages # and recognize all the CPU types, system types and aliases # that are meaningful with *any* GNU software. # Each package is responsible for reporting which valid configurations # it does not support. The user should be able to distinguish # a failure to support a valid configuration from a meaningless # configuration. # The goal of this file is to map all the various variations of a given # machine specification into a single specification in the form: # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM # or in some cases, the newer four-part form: # CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM # It is wrong to echo any other type of specification. me=`echo "$0" | sed -e 's,.*/,,'` usage="\ Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS Canonicalize a configuration name. Operation modes: -h, --help print this help, then exit -t, --time-stamp print date of last modification, then exit -v, --version print version number, then exit Report bugs and patches to ." version="\ GNU config.sub ($timestamp) Copyright 1992-2016 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE." help=" Try \`$me --help' for more information." # Parse command line while test $# -gt 0 ; do case $1 in --time-stamp | --time* | -t ) echo "$timestamp" ; exit ;; --version | -v ) echo "$version" ; exit ;; --help | --h* | -h ) echo "$usage"; exit ;; -- ) # Stop option processing shift; break ;; - ) # Use stdin as input. break ;; -* ) echo "$me: invalid option $1$help" exit 1 ;; *local*) # First pass through any local machine types. echo $1 exit ;; * ) break ;; esac done case $# in 0) echo "$me: missing argument$help" >&2 exit 1;; 1) ;; *) echo "$me: too many arguments$help" >&2 exit 1;; esac # Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any). # Here we must recognize all the valid KERNEL-OS combinations. maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'` case $maybe_os in nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \ linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \ knetbsd*-gnu* | netbsd*-gnu* | netbsd*-eabi* | \ kopensolaris*-gnu* | cloudabi*-eabi* | \ storm-chaos* | os2-emx* | rtmk-nova*) os=-$maybe_os basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'` ;; android-linux) os=-linux-android basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown ;; *) basic_machine=`echo $1 | sed 's/-[^-]*$//'` if [ $basic_machine != $1 ] then os=`echo $1 | sed 's/.*-/-/'` else os=; fi ;; esac ### Let's recognize common machines as not being operating systems so ### that things like config.sub decstation-3100 work. We also ### recognize some manufacturers as not being operating systems, so we ### can provide default operating systems below. case $os in -sun*os*) # Prevent following clause from handling this invalid input. ;; -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \ -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \ -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \ -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\ -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \ -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \ -apple | -axis | -knuth | -cray | -microblaze*) os= basic_machine=$1 ;; -bluegene*) os=-cnk ;; -sim | -cisco | -oki | -wec | -winbond) os= basic_machine=$1 ;; -scout) ;; -wrs) os=-vxworks basic_machine=$1 ;; -chorusos*) os=-chorusos basic_machine=$1 ;; -chorusrdb) os=-chorusrdb basic_machine=$1 ;; -hiux*) os=-hiuxwe2 ;; -sco6) os=-sco5v6 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco5) os=-sco3.2v5 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco4) os=-sco3.2v4 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco3.2.[4-9]*) os=`echo $os | sed -e 's/sco3.2./sco3.2v/'` basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco3.2v[4-9]*) # Don't forget version if it is 3.2v4 or newer. basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco5v6*) # Don't forget version if it is 3.2v4 or newer. basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -sco*) os=-sco3.2v2 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -udk*) basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -isc) os=-isc2.2 basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -clix*) basic_machine=clipper-intergraph ;; -isc*) basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'` ;; -lynx*178) os=-lynxos178 ;; -lynx*5) os=-lynxos5 ;; -lynx*) os=-lynxos ;; -ptx*) basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'` ;; -windowsnt*) os=`echo $os | sed -e 's/windowsnt/winnt/'` ;; -psos*) os=-psos ;; -mint | -mint[0-9]*) basic_machine=m68k-atari os=-mint ;; esac # Decode aliases for certain CPU-COMPANY combinations. case $basic_machine in # Recognize the basic CPU types without company name. # Some are omitted here because they have special meanings below. 1750a | 580 \ | a29k \ | aarch64 | aarch64_be \ | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \ | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \ | am33_2.0 \ | arc | arceb \ | arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \ | avr | avr32 \ | ba \ | be32 | be64 \ | bfin \ | c4x | c8051 | clipper \ | d10v | d30v | dlx | dsp16xx \ | e2k | epiphany \ | fido | fr30 | frv | ft32 \ | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \ | hexagon \ | i370 | i860 | i960 | ia64 \ | ip2k | iq2000 \ | k1om \ | le32 | le64 \ | lm32 \ | m32c | m32r | m32rle | m68000 | m68k | m88k \ | maxq | mb | microblaze | microblazeel | mcore | mep | metag \ | mips | mipsbe | mipseb | mipsel | mipsle \ | mips16 \ | mips64 | mips64el \ | mips64octeon | mips64octeonel \ | mips64orion | mips64orionel \ | mips64r5900 | mips64r5900el \ | mips64vr | mips64vrel \ | mips64vr4100 | mips64vr4100el \ | mips64vr4300 | mips64vr4300el \ | mips64vr5000 | mips64vr5000el \ | mips64vr5900 | mips64vr5900el \ | mipsisa32 | mipsisa32el \ | mipsisa32r2 | mipsisa32r2el \ | mipsisa32r6 | mipsisa32r6el \ | mipsisa64 | mipsisa64el \ | mipsisa64r2 | mipsisa64r2el \ | mipsisa64r6 | mipsisa64r6el \ | mipsisa64sb1 | mipsisa64sb1el \ | mipsisa64sr71k | mipsisa64sr71kel \ | mipsr5900 | mipsr5900el \ | mipstx39 | mipstx39el \ | mn10200 | mn10300 \ | moxie \ | mt \ | msp430 \ | nds32 | nds32le | nds32be \ | nios | nios2 | nios2eb | nios2el \ | ns16k | ns32k \ | open8 | or1k | or1knd | or32 \ | pdp10 | pdp11 | pj | pjl \ | powerpc | powerpc64 | powerpc64le | powerpcle \ | pru \ | pyramid \ | riscv32 | riscv64 \ | rl78 | rx \ | score \ | sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[234]eb | sheb | shbe | shle | sh[1234]le | sh3ele \ | sh64 | sh64le \ | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \ | sparcv8 | sparcv9 | sparcv9b | sparcv9v \ | spu \ | tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \ | ubicom32 \ | v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \ | visium \ | we32k \ | x86 | xc16x | xstormy16 | xtensa \ | z8k | z80) basic_machine=$basic_machine-unknown ;; c54x) basic_machine=tic54x-unknown ;; c55x) basic_machine=tic55x-unknown ;; c6x) basic_machine=tic6x-unknown ;; leon|leon[3-9]) basic_machine=sparc-$basic_machine ;; m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip) basic_machine=$basic_machine-unknown os=-none ;; m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k) ;; ms1) basic_machine=mt-unknown ;; strongarm | thumb | xscale) basic_machine=arm-unknown ;; xgate) basic_machine=$basic_machine-unknown os=-none ;; xscaleeb) basic_machine=armeb-unknown ;; xscaleel) basic_machine=armel-unknown ;; # We use `pc' rather than `unknown' # because (1) that's what they normally are, and # (2) the word "unknown" tends to confuse beginning users. i*86 | x86_64) basic_machine=$basic_machine-pc ;; # Object if more than one company name word. *-*-*) echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2 exit 1 ;; # Recognize the basic CPU types with company name. 580-* \ | a29k-* \ | aarch64-* | aarch64_be-* \ | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \ | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \ | alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \ | arm-* | armbe-* | armle-* | armeb-* | armv*-* \ | avr-* | avr32-* \ | ba-* \ | be32-* | be64-* \ | bfin-* | bs2000-* \ | c[123]* | c30-* | [cjt]90-* | c4x-* \ | c8051-* | clipper-* | craynv-* | cydra-* \ | d10v-* | d30v-* | dlx-* \ | e2k-* | elxsi-* \ | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \ | h8300-* | h8500-* \ | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \ | hexagon-* \ | i*86-* | i860-* | i960-* | ia64-* \ | ip2k-* | iq2000-* \ | k1om-* \ | le32-* | le64-* \ | lm32-* \ | m32c-* | m32r-* | m32rle-* \ | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \ | m88110-* | m88k-* | maxq-* | mcore-* | metag-* \ | microblaze-* | microblazeel-* \ | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \ | mips16-* \ | mips64-* | mips64el-* \ | mips64octeon-* | mips64octeonel-* \ | mips64orion-* | mips64orionel-* \ | mips64r5900-* | mips64r5900el-* \ | mips64vr-* | mips64vrel-* \ | mips64vr4100-* | mips64vr4100el-* \ | mips64vr4300-* | mips64vr4300el-* \ | mips64vr5000-* | mips64vr5000el-* \ | mips64vr5900-* | mips64vr5900el-* \ | mipsisa32-* | mipsisa32el-* \ | mipsisa32r2-* | mipsisa32r2el-* \ | mipsisa32r6-* | mipsisa32r6el-* \ | mipsisa64-* | mipsisa64el-* \ | mipsisa64r2-* | mipsisa64r2el-* \ | mipsisa64r6-* | mipsisa64r6el-* \ | mipsisa64sb1-* | mipsisa64sb1el-* \ | mipsisa64sr71k-* | mipsisa64sr71kel-* \ | mipsr5900-* | mipsr5900el-* \ | mipstx39-* | mipstx39el-* \ | mmix-* \ | mt-* \ | msp430-* \ | nds32-* | nds32le-* | nds32be-* \ | nios-* | nios2-* | nios2eb-* | nios2el-* \ | none-* | np1-* | ns16k-* | ns32k-* \ | open8-* \ | or1k*-* \ | orion-* \ | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \ | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \ | pru-* \ | pyramid-* \ | riscv32-* | riscv64-* \ | rl78-* | romp-* | rs6000-* | rx-* \ | sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \ | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \ | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \ | sparclite-* \ | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx*-* \ | tahoe-* \ | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \ | tile*-* \ | tron-* \ | ubicom32-* \ | v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \ | vax-* \ | visium-* \ | we32k-* \ | x86-* | x86_64-* | xc16x-* | xps100-* \ | xstormy16-* | xtensa*-* \ | ymp-* \ | z8k-* | z80-*) ;; # Recognize the basic CPU types without company name, with glob match. xtensa*) basic_machine=$basic_machine-unknown ;; # Recognize the various machine names and aliases which stand # for a CPU type and a company and sometimes even an OS. 386bsd) basic_machine=i386-unknown os=-bsd ;; 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc) basic_machine=m68000-att ;; 3b*) basic_machine=we32k-att ;; a29khif) basic_machine=a29k-amd os=-udi ;; abacus) basic_machine=abacus-unknown ;; adobe68k) basic_machine=m68010-adobe os=-scout ;; alliant | fx80) basic_machine=fx80-alliant ;; altos | altos3068) basic_machine=m68k-altos ;; am29k) basic_machine=a29k-none os=-bsd ;; amd64) basic_machine=x86_64-pc ;; amd64-*) basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'` ;; amdahl) basic_machine=580-amdahl os=-sysv ;; amiga | amiga-*) basic_machine=m68k-unknown ;; amigaos | amigados) basic_machine=m68k-unknown os=-amigaos ;; amigaunix | amix) basic_machine=m68k-unknown os=-sysv4 ;; apollo68) basic_machine=m68k-apollo os=-sysv ;; apollo68bsd) basic_machine=m68k-apollo os=-bsd ;; aros) basic_machine=i386-pc os=-aros ;; asmjs) basic_machine=asmjs-unknown ;; aux) basic_machine=m68k-apple os=-aux ;; balance) basic_machine=ns32k-sequent os=-dynix ;; blackfin) basic_machine=bfin-unknown os=-linux ;; blackfin-*) basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'` os=-linux ;; bluegene*) basic_machine=powerpc-ibm os=-cnk ;; c54x-*) basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'` ;; c55x-*) basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'` ;; c6x-*) basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'` ;; c90) basic_machine=c90-cray os=-unicos ;; cegcc) basic_machine=arm-unknown os=-cegcc ;; convex-c1) basic_machine=c1-convex os=-bsd ;; convex-c2) basic_machine=c2-convex os=-bsd ;; convex-c32) basic_machine=c32-convex os=-bsd ;; convex-c34) basic_machine=c34-convex os=-bsd ;; convex-c38) basic_machine=c38-convex os=-bsd ;; cray | j90) basic_machine=j90-cray os=-unicos ;; craynv) basic_machine=craynv-cray os=-unicosmp ;; cr16 | cr16-*) basic_machine=cr16-unknown os=-elf ;; crds | unos) basic_machine=m68k-crds ;; crisv32 | crisv32-* | etraxfs*) basic_machine=crisv32-axis ;; cris | cris-* | etrax*) basic_machine=cris-axis ;; crx) basic_machine=crx-unknown os=-elf ;; da30 | da30-*) basic_machine=m68k-da30 ;; decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn) basic_machine=mips-dec ;; decsystem10* | dec10*) basic_machine=pdp10-dec os=-tops10 ;; decsystem20* | dec20*) basic_machine=pdp10-dec os=-tops20 ;; delta | 3300 | motorola-3300 | motorola-delta \ | 3300-motorola | delta-motorola) basic_machine=m68k-motorola ;; delta88) basic_machine=m88k-motorola os=-sysv3 ;; dicos) basic_machine=i686-pc os=-dicos ;; djgpp) basic_machine=i586-pc os=-msdosdjgpp ;; dpx20 | dpx20-*) basic_machine=rs6000-bull os=-bosx ;; dpx2* | dpx2*-bull) basic_machine=m68k-bull os=-sysv3 ;; e500v[12]) basic_machine=powerpc-unknown os=$os"spe" ;; e500v[12]-*) basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'` os=$os"spe" ;; ebmon29k) basic_machine=a29k-amd os=-ebmon ;; elxsi) basic_machine=elxsi-elxsi os=-bsd ;; encore | umax | mmax) basic_machine=ns32k-encore ;; es1800 | OSE68k | ose68k | ose | OSE) basic_machine=m68k-ericsson os=-ose ;; fx2800) basic_machine=i860-alliant ;; genix) basic_machine=ns32k-ns ;; gmicro) basic_machine=tron-gmicro os=-sysv ;; go32) basic_machine=i386-pc os=-go32 ;; h3050r* | hiux*) basic_machine=hppa1.1-hitachi os=-hiuxwe2 ;; h8300hms) basic_machine=h8300-hitachi os=-hms ;; h8300xray) basic_machine=h8300-hitachi os=-xray ;; h8500hms) basic_machine=h8500-hitachi os=-hms ;; harris) basic_machine=m88k-harris os=-sysv3 ;; hp300-*) basic_machine=m68k-hp ;; hp300bsd) basic_machine=m68k-hp os=-bsd ;; hp300hpux) basic_machine=m68k-hp os=-hpux ;; hp3k9[0-9][0-9] | hp9[0-9][0-9]) basic_machine=hppa1.0-hp ;; hp9k2[0-9][0-9] | hp9k31[0-9]) basic_machine=m68000-hp ;; hp9k3[2-9][0-9]) basic_machine=m68k-hp ;; hp9k6[0-9][0-9] | hp6[0-9][0-9]) basic_machine=hppa1.0-hp ;; hp9k7[0-79][0-9] | hp7[0-79][0-9]) basic_machine=hppa1.1-hp ;; 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(char *) 0 : (char const *) 0; *t++ = 0; if (s) return 0; } { /* Someone thinks the Sun supposedly-ANSI compiler will reject this. */ int x[] = {25, 17}; const int *foo = &x[0]; ++foo; } { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */ typedef const int *iptr; iptr p = 0; ++p; } { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */ struct s { int j; const int *ap[3]; } bx; struct s *b = &bx; b->j = 5; } { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */ const int foo = 10; if (!foo) return 0; } return !cs[0] && !zero.x; #endif ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO"; then : ac_cv_c_const=yes else ac_cv_c_const=no fi rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_const" >&5 $as_echo "$ac_cv_c_const" >&6; } if test $ac_cv_c_const = no; then $as_echo "#define const /**/" >>confdefs.h fi { $as_echo "$as_me:${as_lineno-$LINENO}: checking for inline" >&5 $as_echo_n "checking for inline... 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"$LINENO" 5 fi done else if test -n "$ac_tool_prefix"; then # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args. set dummy ${ac_tool_prefix}dlltool; ac_word=$2 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 $as_echo_n "checking for $ac_word... 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" >&6; } if ${ac_cv_prog_ac_ct_DLLTOOL+:} false; then : $as_echo_n "(cached) " >&6 else if test -n "$ac_ct_DLLTOOL"; then ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test. else as_save_IFS=$IFS; IFS=$PATH_SEPARATOR for as_dir in $PATH do IFS=$as_save_IFS test -z "$as_dir" && as_dir=. for ac_exec_ext in '' $ac_executable_extensions; do if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then ac_cv_prog_ac_ct_DLLTOOL="dlltool" $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5 break 2 fi done done IFS=$as_save_IFS fi fi ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL if test -n "$ac_ct_DLLTOOL"; then { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5 $as_echo "$ac_ct_DLLTOOL" >&6; } else { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5 $as_echo "no" >&6; } fi if test "x$ac_ct_DLLTOOL" = x; then DLLTOOL=":" else case $cross_compiling:$ac_tool_warned in yes:) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 $as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} ac_tool_warned=yes ;; esac DLLTOOL=$ac_ct_DLLTOOL fi else DLLTOOL="$ac_cv_prog_DLLTOOL" fi if test x"${DLLTOOL}" = x":"; then as_fn_error $? "Missing dlltool which is required to build the import library!" "$LINENO" 5 fi for ac_header in winsock2.h windows.h ws2tcpip.h do : as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" if eval test \"x\$"$as_ac_Header"\" = x"yes"; then : cat >>confdefs.h <<_ACEOF #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 _ACEOF else as_fn_error $? "Missing essential Windows std headers." "$LINENO" 5 fi done { $as_echo "$as_me:${as_lineno-$LINENO}: checking for main in -lws2_32" >&5 $as_echo_n "checking for main in -lws2_32... " >&6; } if ${ac_cv_lib_ws2_32_main+:} false; then : $as_echo_n "(cached) " >&6 else ac_check_lib_save_LIBS=$LIBS LIBS="-lws2_32 $LIBS" cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ int main () { return main (); ; return 0; } _ACEOF if ac_fn_c_try_link "$LINENO"; then : ac_cv_lib_ws2_32_main=yes else ac_cv_lib_ws2_32_main=no fi rm -f core conftest.err conftest.$ac_objext \ conftest$ac_exeext conftest.$ac_ext LIBS=$ac_check_lib_save_LIBS fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_ws2_32_main" >&5 $as_echo "$ac_cv_lib_ws2_32_main" >&6; } if test "x$ac_cv_lib_ws2_32_main" = xyes; then : cat >>confdefs.h <<_ACEOF #define HAVE_LIBWS2_32 1 _ACEOF LIBS="-lws2_32 $LIBS" fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU getopt_long" >&5 $as_echo_n "checking for GNU getopt_long... 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"$LINENO" 5 fi ac_fn_c_check_member "$LINENO" "struct timeval" "tv_usec" "ac_cv_member_struct_timeval_tv_usec" "#include " if test "x$ac_cv_member_struct_timeval_tv_usec" = xyes; then : else as_fn_error $? "Invalid \`struct timeval\` structure." "$LINENO" 5 fi # The cast to long int works around a bug in the HP C Compiler # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'. # This bug is HP SR number 8606223364. { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of char" >&5 $as_echo_n "checking size of char... " >&6; } if ${ac_cv_sizeof_char+:} false; then : $as_echo_n "(cached) " >&6 else if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (char))" "ac_cv_sizeof_char" "$ac_includes_default"; then : else if test "$ac_cv_type_char" = yes; then { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;} as_fn_error 77 "cannot compute sizeof (char) See \`config.log' for more details" "$LINENO" 5; } else ac_cv_sizeof_char=0 fi fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_char" >&5 $as_echo "$ac_cv_sizeof_char" >&6; } cat >>confdefs.h <<_ACEOF #define SIZEOF_CHAR $ac_cv_sizeof_char _ACEOF # The cast to long int works around a bug in the HP C Compiler # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'. # This bug is HP SR number 8606223364. { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of uint8_t" >&5 $as_echo_n "checking size of uint8_t... " >&6; } if ${ac_cv_sizeof_uint8_t+:} false; then : $as_echo_n "(cached) " >&6 else if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (uint8_t))" "ac_cv_sizeof_uint8_t" "$ac_includes_default"; then : else if test "$ac_cv_type_uint8_t" = yes; then { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;} as_fn_error 77 "cannot compute sizeof (uint8_t) See \`config.log' for more details" "$LINENO" 5; } else ac_cv_sizeof_uint8_t=0 fi fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_uint8_t" >&5 $as_echo "$ac_cv_sizeof_uint8_t" >&6; } cat >>confdefs.h <<_ACEOF #define SIZEOF_UINT8_T $ac_cv_sizeof_uint8_t _ACEOF # The cast to long int works around a bug in the HP C Compiler # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'. # This bug is HP SR number 8606223364. { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of uint16_t" >&5 $as_echo_n "checking size of uint16_t... " >&6; } if ${ac_cv_sizeof_uint16_t+:} false; then : $as_echo_n "(cached) " >&6 else if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (uint16_t))" "ac_cv_sizeof_uint16_t" "$ac_includes_default"; then : else if test "$ac_cv_type_uint16_t" = yes; then { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;} as_fn_error 77 "cannot compute sizeof (uint16_t) See \`config.log' for more details" "$LINENO" 5; } else ac_cv_sizeof_uint16_t=0 fi fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_uint16_t" >&5 $as_echo "$ac_cv_sizeof_uint16_t" >&6; } cat >>confdefs.h <<_ACEOF #define SIZEOF_UINT16_T $ac_cv_sizeof_uint16_t _ACEOF # The cast to long int works around a bug in the HP C Compiler # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'. # This bug is HP SR number 8606223364. { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of uint32_t" >&5 $as_echo_n "checking size of uint32_t... " >&6; } if ${ac_cv_sizeof_uint32_t+:} false; then : $as_echo_n "(cached) " >&6 else if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (uint32_t))" "ac_cv_sizeof_uint32_t" "$ac_includes_default"; then : else if test "$ac_cv_type_uint32_t" = yes; then { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;} as_fn_error 77 "cannot compute sizeof (uint32_t) See \`config.log' for more details" "$LINENO" 5; } else ac_cv_sizeof_uint32_t=0 fi fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_uint32_t" >&5 $as_echo "$ac_cv_sizeof_uint32_t" >&6; } cat >>confdefs.h <<_ACEOF #define SIZEOF_UINT32_T $ac_cv_sizeof_uint32_t _ACEOF # The cast to long int works around a bug in the HP C Compiler # version HP92453-01 B.11.11.23709.GP, which incorrectly rejects # declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'. # This bug is HP SR number 8606223364. { $as_echo "$as_me:${as_lineno-$LINENO}: checking size of int" >&5 $as_echo_n "checking size of int... 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"$LINENO" 5 fi { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __attribute__ ((packed))" >&5 $as_echo_n "checking for __attribute__ ((packed))... " >&6; } cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ #include struct foo { int num; char *str; void *ptr; } __attribute__ ((packed)); int main () { ; return 0; } _ACEOF if ac_fn_c_try_compile "$LINENO"; then : { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5 $as_echo "yes" >&6; } else as_fn_error $? "Your compiler does not support \`__attribute__ ((packed))\`." 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"$LINENO" 5 fi done fi # Check whether --enable-pcap was given. if test "${enable_pcap+set}" = set; then : enableval=$enable_pcap; else pcap_enabled=yes fi pcap_enabled=$(echo ${pcap_enabled}) case ${pcap_enabled} in 1|y|yes) pcap_enabled=yes ;; ''|0|n|no) pcap_enabled= ;; *) as_fn_error $? "Unknown option \`${pcap_enabled}\` for --disable-pcap" "$LINENO" 5 ;; esac # Check whether --enable-selinux was given. if test "${enable_selinux+set}" = set; then : enableval=$enable_selinux; else selinux_enabled=yes fi selinux_enabled=$(echo ${selinux_enabled}) case ${selinux_enabled} in 1|y|yes) selinux_enabled=yes ;; ''|0|n|no) selinux_enabled= ;; *) as_fn_error $? "Unknown option \`${selinux_enabled}\` for --disable-selinux" "$LINENO" 5 ;; esac use_customrng=no { $as_echo "$as_me:${as_lineno-$LINENO}: checking for random device" >&5 $as_echo_n "checking for random device... 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"$LINENO" 5 ;; esac { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${with_rngdev}" >&5 $as_echo "${with_rngdev}" >&6; } cat >>confdefs.h <<_ACEOF #define RNGDEV "${with_rngdev}" _ACEOF if test x"${pcap_enabled}" != x -a \ x"${use_msw}" != xyes; then for ac_header in pcap.h do : ac_fn_c_check_header_mongrel "$LINENO" "pcap.h" "ac_cv_header_pcap_h" "$ac_includes_default" if test "x$ac_cv_header_pcap_h" = xyes; then : cat >>confdefs.h <<_ACEOF #define HAVE_PCAP_H 1 _ACEOF else pcap_enabled= fi done { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing pcap_lookupnet" >&5 $as_echo_n "checking for library containing pcap_lookupnet... " >&6; } if ${ac_cv_search_pcap_lookupnet+:} false; then : $as_echo_n "(cached) " >&6 else ac_func_search_save_LIBS=$LIBS cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. 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" >&6; } if ${ac_cv_search_arc4random+:} false; then : $as_echo_n "(cached) " >&6 else ac_func_search_save_LIBS=$LIBS cat confdefs.h - <<_ACEOF >conftest.$ac_ext /* end confdefs.h. */ /* Override any GCC internal prototype to avoid an error. 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When coming back to configure, we # need to make the FD available again. if test "$no_create" != yes; then ac_cs_success=: ac_config_status_args= test "$silent" = yes && ac_config_status_args="$ac_config_status_args --quiet" exec 5>/dev/null $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false exec 5>>config.log # Use ||, not &&, to avoid exiting from the if with $? = 1, which # would make configure fail if this is the last instruction. $ac_cs_success || as_fn_exit 1 fi if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} fi ptunnel-ng-1.42/configure.ac000066400000000000000000000157321346103123100160170ustar00rootroot00000000000000AC_PREREQ(2.69) AC_INIT([ptunnel-ng], [1.41], [], [], []) AC_CONFIG_SRCDIR([src/config.h.in]) AC_CONFIG_FILES([Makefile src/Makefile]) AC_CANONICAL_BUILD AC_CANONICAL_HOST case x"${host}" in x*-*-cygwin* | x*-*-mingw32*) dnl Some Windows includes required by third-party modules. use_msw=yes PROGRAM_EXT=".exe" ;; *-androideabi) use_android=yes ;; esac AM_SILENT_RULES([yes]) AM_INIT_AUTOMAKE AC_PROG_INSTALL AC_PROG_CC AC_PROG_CC_STDC AC_USE_SYSTEM_EXTENSIONS AC_C_CONST AC_C_INLINE AC_TYPE_SIZE_T AC_CHECK_HEADER_STDBOOL AC_FUNC_VPRINTF AC_FUNC_MEMCMP dnl Check for -std=gnu99 if test x"${ac_cv_prog_cc_stdc}" = x"no"; then AC_MSG_ERROR([Your compiler does not support \`-std=gnu99\`. 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AC_CHECK_MEMBER([struct timeval.tv_sec], [], [AC_MSG_ERROR([Invalid \`struct timeval\` structure.])], [[#include ]]) AC_CHECK_MEMBER([struct timeval.tv_usec], [], [AC_MSG_ERROR([Invalid \`struct timeval\` structure.])], [[#include ]]) dnl Check size AC_CHECK_SIZEOF(char) AC_CHECK_SIZEOF(uint8_t) AC_CHECK_SIZEOF(uint16_t) AC_CHECK_SIZEOF(uint32_t) AC_CHECK_SIZEOF(int) if test $ac_cv_sizeof_char != "1" -o \ $ac_cv_sizeof_uint8_t != "1" -o \ $ac_cv_sizeof_uint16_t != "2" -o \ $ac_cv_sizeof_uint32_t != "4" -o \ $ac_cv_sizeof_int != "4"; then AC_MSG_ERROR([Invalid type size.]) fi AC_MSG_CHECKING([for __attribute__ ((packed))]) AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[ #include struct foo { int num; char *str; void *ptr; } __attribute__ ((packed)); ]], [])] ,[AC_MSG_RESULT([yes])] ,[AC_MSG_ERROR([Your compiler does not support \`__attribute__ ((packed))\`.])]) dnl Check for std functions. AC_CHECK_FUNCS([malloc calloc free memcpy memset printf sprintf vsnprintf strerror strlen strncmp strstr strtol strtoul fopen fprintf gettimeofday close fclose exit getopt_long],, [AC_MSG_ERROR([Missing essential std functions.])]) if test x"${use_msw}" = x; then AC_CHECK_FUNCS([inet_ntoa],, [AC_MSG_ERROR([Missing essential std functions.])]) fi dnl `--disable-pcap`: Enabled if found. AC_ARG_ENABLE([pcap], [AS_HELP_STRING([--disable-pcap], [Disable pcap support. (default: enabled if found)])],,[pcap_enabled=yes]) pcap_enabled=$(echo ${pcap_enabled}) case ${pcap_enabled} in 1|y|yes) pcap_enabled=yes ;; ''|0|n|no) pcap_enabled= ;; *) AC_MSG_ERROR([Unknown option \`${pcap_enabled}\` for --disable-pcap]) ;; esac dnl `--disable-selinux`: Enabled if found. AC_ARG_ENABLE([selinux], [AS_HELP_STRING([--disable-selinux], [Disable SELINUX support. 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int sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP); filt.data = ~((1</dev/null } case $1 in ""|load) modlib_add_user_and_group nobody modreg cgi 'pingtunnel-ng' 'pingtunnel-ng' modreg daemon $DAEMON modlib_start $PINGTUNNELNG_ENABLED ;; unload) modunreg daemon $DAEMON modunreg cgi 'pingtunnel-ng' modlib_stop ;; start) modlib_start ;; stop) modlib_stop ;; restart) modlib_restart ;; status) modlib_status ;; *) echo "Usage: $0 [load|unload|start|stop|restart|status]" 1>&2 exit 1 ;; esac exit 0 ptunnel-ng-1.42/contrib/freetz/make/pingtunnel-ng/files/root/usr/000077500000000000000000000000001346103123100250605ustar00rootroot00000000000000ptunnel-ng-1.42/contrib/freetz/make/pingtunnel-ng/files/root/usr/lib/000077500000000000000000000000001346103123100256265ustar00rootroot00000000000000ptunnel-ng-1.42/contrib/freetz/make/pingtunnel-ng/files/root/usr/lib/cgi-bin/000077500000000000000000000000001346103123100271365ustar00rootroot00000000000000ptunnel-ng-1.42/contrib/freetz/make/pingtunnel-ng/files/root/usr/lib/cgi-bin/pingtunnel-ng.cgi000077500000000000000000000011371346103123100324140ustar00rootroot00000000000000#!/bin/sh . /usr/lib/libmodcgi.sh sec_begin '$(lang de:"Starttyp" en:"Start type")' cgi_print_radiogroup_service_starttype "enabled" "$PINGTUNNELNG_ENABLED" "" "" 0 sec_end sec_begin '$(lang de:"Server" en:"Server")' cgi_print_password_p "password" "$PINGTUNNELNG_PASSWORD" 20/32 \ "$(lang de:"Tunnel-Passwort" en:"Tunnel password"): " cgi_print_textline_p "extra" "$PINGTUNNELNG_EXTRA" 40/255 \ "$(lang de:"Erweiterte Optionen" en:"Extra options"): " cgi_print_textline_p "magic" "$PINGTUNNELNG_MAGIC" 20/32 \ "$(lang de:"ICMP Tunnel magische Nummer" en:"ICMP Tunnel Magic Number"): " sec_end ptunnel-ng-1.42/contrib/freetz/make/pingtunnel-ng/pingtunnel-ng.mk000066400000000000000000000020151346103123100252760ustar00rootroot00000000000000$(call PKG_INIT_BIN, 1.1) $(PKG)_SOURCE:=ptunnel-ng-$($(PKG)_VERSION).tar.gz $(PKG)_SOURCE_SHA256:=3182ecc4f9a7ef3ae8895b460aa596ae050b9718b98fd5eaf224772fba017c22 $(PKG)_SITE:=https://github.com/lnslbrty/ptunnel-ng/releases/download/v$($(PKG)_VERSION) $(PKG)_DIR:=$($(PKG)_SOURCE_DIR)/ptunnel-ng-$($(PKG)_VERSION) $(PKG)_BINARY:=$($(PKG)_DIR)/src/ptunnel-ng $(PKG)_TARGET_BINARY:=$($(PKG)_DEST_DIR)/usr/sbin/ptunnel-ng $(PKG)_BUILD_PREREQ += aclocal automake autoconf $(PKG)_DEPENDS_ON += libpcap $(PKG)_EXTRA_CFLAGS += -std=gnu99 $(PKG)_CONFIGURE_OPTIONS += --disable-selinux $(PKG_SOURCE_DOWNLOAD) $(PKG_UNPACKED) $(PKG_CONFIGURED_CONFIGURE) $($(PKG)_BINARY): $($(PKG)_DIR)/.configured echo "______$(PINGTUNNEL_NG_EXTRA_CFLAGS)_____" $(SUBMAKE) -C $(PINGTUNNEL_NG_DIR) V=1 \ CFLAGS="$(TARGET_CFLAGS) $(PINGTUNNEL_NG_EXTRA_CFLAGS)" $($(PKG)_TARGET_BINARY): $($(PKG)_BINARY) $(INSTALL_BINARY_STRIP) $(pkg): $(pkg)-precompiled: $($(PKG)_TARGET_BINARY) $(pkg)-uninstall: $(RM) $(PINGTUNNEL_NG_TARGET_BINARY) $(PKG_FINISH) ptunnel-ng-1.42/contrib/ptunnel-ng.conf000066400000000000000000000011441346103123100201170ustar00rootroot00000000000000# Do not forget the '=' between options and values # for long options e.g. '--option=value'. # This is not required nor valid for short options e.g. '-o value'. # # required settings # # chroot to this dir PT_CHROOT="/var/lib/ptunnel" # change user/group PT_USER="nobody" PT_GROUP="nobody" # # optional settings # # authentication challenge (won't be visible in /proc/*/cmdline) #PT_PASSWD="--passwd=changeme" # magic value protocol identifier (fool IDS/IDP software) #PT_MAGIC="--magic=0x41414141" # destination ip #PT_DESTIP="--remote-addr=127.0.0.1" # destination port #PT_DESTPORT="--remote-port=22" ptunnel-ng-1.42/contrib/ptunnel-ng.service000066400000000000000000000010601346103123100206270ustar00rootroot00000000000000[Unit] Description=PingTunnel NG Proxy/Server After=syslog.target [Service] Type=fork EnvironmentFile=/etc/conf.d/ptunnel-ng Environment="PT_CHROOT=${PT_CHROOT:/var/lib/ptunnel}" Environment="PT_USER=${PT_USER:nobody}" Environment="PT_GROUP=${PT_GROUP:nobody}" ExecStartPre=mkdir -p ${PT_CHROOT} ExecStartPre=chown ${PT_USER}:${PT_GROUP} ${PT_CHROOT} ExecStart=/usr/bin/ptunnel-ng \ --syslog \ --chroot=${PT_CHROOT} --user=${PT_USER} --group=${PT_GROUP} \ $PT_PASSWD $PT_MAGIC $PT_DESTIP $PT_DESTPORT Restart=on-abort [Install] WantedBy=multi-user.target ptunnel-ng-1.42/debian/000077500000000000000000000000001346103123100147435ustar00rootroot00000000000000ptunnel-ng-1.42/debian/changelog000066400000000000000000000002131346103123100166110ustar00rootroot00000000000000ptunnel-ng (1.0) RELEASED; urgency=medium * Initial release. -- Toni Uhlig Tue, 19 Dec 2017 00:16:33 +0100 ptunnel-ng-1.42/debian/compat000066400000000000000000000000021346103123100161410ustar00rootroot000000000000009 ptunnel-ng-1.42/debian/control000066400000000000000000000016131346103123100163470ustar00rootroot00000000000000Source: ptunnel-ng Section: net Priority: optional Maintainer: Debian QA Group Build-Depends: debhelper (>= 9), libpcap0.8-dev | libpcap-dev, libselinux1-dev [linux-any] Standards-Version: 3.9.7 Homepage: https://github.com/lnslbrty/ptunnel-ng Package: ptunnel-ng Architecture: any Depends: ${misc:Depends}, ${shlibs:Depends} Description: Tunnel TCP connections over ICMP packets ptunnel-ng is an application that allows you to reliably tunnel TCP connections to a remote host using ICMP echo request and reply packets, commonly known as ping requests and replies. It acts as a proxy and can handle sockets and secured identification. . Those features can be very handy when working in a closed networking environment with firewalls and proxies. ptunnel-ng is a improved version of the original ptunnel with additional features and bugfixes. ptunnel-ng-1.42/debian/copyright000066400000000000000000000052641346103123100167050ustar00rootroot00000000000000Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/ Upstream-Name: ptunnel Source: http://www.cs.uit.no/~daniels/PingTunnel/index.html Files: * Copyright: Copyright 2017-2019 Toni Uhlig License: BSD-3-Clause Files: md5.* Copyright: Copyright 1999, 2000, 2002 Aladdin Enterprises License: Zlib Files: debian/* Copyright: Copyright 2017 Toni Uhlig License: BSD-3-Clause Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. License: Zlib This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. . Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: . 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. ptunnel-ng-1.42/debian/ptunnel.doc-base000066400000000000000000000004341346103123100200300ustar00rootroot00000000000000Document: ptunnel Title: Debian ptunnel manual Author: Daniel Stoedle Abstract: This manual describes how works ptunnel and how use it. Section: Network/Communication Format: HTML Index: /usr/share/doc/ptunnel/index.html Files: /usr/share/doc/ptunnel/index.html ptunnel-ng-1.42/debian/ptunnel.docs000066400000000000000000000000721346103123100173010ustar00rootroot00000000000000README web/index.html web/packet-format.png web/setup.png ptunnel-ng-1.42/debian/rules000077500000000000000000000011131346103123100160170ustar00rootroot00000000000000#!/usr/bin/make -f export DEB_BUILD_MAINT_OPTIONS = hardening=+all CPPFLAGS:=$(shell dpkg-buildflags --get CPPFLAGS) CFLAGS:=$(shell dpkg-buildflags --get CFLAGS) LDFLAGS:=$(shell dpkg-buildflags --get LDFLAGS) %: dh $@ --with autoreconf override_dh_auto_build: dh_auto_build -- CFLAGS="-Wall -Werror $(CFLAGS)" LDFLAGS="$(LDFLAGS)" CPPFLAGS="$(CPPFLAGS)" override_dh_auto_install: dh_auto_install install -D -m644 contrib/ptunnel-ng.conf debian/ptunnel-ng/etc/conf.d/ptunnel-ng install -D -m644 contrib/ptunnel-ng.service debian/ptunnel-ng/etc/systemd/system/ptunnel-ng.service ptunnel-ng-1.42/debian/source/000077500000000000000000000000001346103123100162435ustar00rootroot00000000000000ptunnel-ng-1.42/debian/source/format000066400000000000000000000000141346103123100174510ustar00rootroot000000000000003.0 (quilt) ptunnel-ng-1.42/debian/watch000066400000000000000000000001171346103123100157730ustar00rootroot00000000000000version=3 http://www.cs.uit.no/~daniels/PingTunnel/PingTunnel-(.*)\.tar\.gz ptunnel-ng-1.42/depcomp000077500000000000000000000560161346103123100151060ustar00rootroot00000000000000#! /bin/sh # depcomp - compile a program generating dependencies as side-effects scriptversion=2013-05-30.07; # UTC # Copyright (C) 1999-2014 Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # You should have received a copy of the GNU General Public License # along with this program. If not, see . # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Originally written by Alexandre Oliva . case $1 in '') echo "$0: No command. Try '$0 --help' for more information." 1>&2 exit 1; ;; -h | --h*) cat <<\EOF Usage: depcomp [--help] [--version] PROGRAM [ARGS] Run PROGRAMS ARGS to compile a file, generating dependencies as side-effects. Environment variables: depmode Dependency tracking mode. source Source file read by 'PROGRAMS ARGS'. object Object file output by 'PROGRAMS ARGS'. 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We # parameterize here, but still list the modes in the big case below, # to make depend.m4 easier to write. Note that we *cannot* use a case # here, because this file can only contain one case statement. if test "$depmode" = hp; then # HP compiler uses -M and no extra arg. gccflag=-M depmode=gcc fi if test "$depmode" = dashXmstdout; then # This is just like dashmstdout with a different argument. dashmflag=-xM depmode=dashmstdout fi cygpath_u="cygpath -u -f -" if test "$depmode" = msvcmsys; then # This is just like msvisualcpp but w/o cygpath translation. # Just convert the backslash-escaped backslashes to single forward # slashes to satisfy depend.m4 cygpath_u='sed s,\\\\,/,g' depmode=msvisualcpp fi if test "$depmode" = msvc7msys; then # This is just like msvc7 but w/o cygpath translation. # Just convert the backslash-escaped backslashes to single forward # slashes to satisfy depend.m4 cygpath_u='sed s,\\\\,/,g' depmode=msvc7 fi if test "$depmode" = xlc; then # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information. gccflag=-qmakedep=gcc,-MF depmode=gcc fi case "$depmode" in gcc3) ## gcc 3 implements dependency tracking that does exactly what ## we want. Yay! Note: for some reason libtool 1.4 doesn't like ## it if -MD -MP comes after the -MF stuff. Hmm. ## Unfortunately, FreeBSD c89 acceptance of flags depends upon ## the command line argument order; so add the flags where they ## appear in depend2.am. Note that the slowdown incurred here ## affects only configure: in makefiles, %FASTDEP% shortcuts this. for arg do case $arg in -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;; *) set fnord "$@" "$arg" ;; esac shift # fnord shift # $arg done "$@" stat=$? if test $stat -ne 0; then rm -f "$tmpdepfile" exit $stat fi mv "$tmpdepfile" "$depfile" ;; gcc) ## Note that this doesn't just cater to obsosete pre-3.x GCC compilers. ## but also to in-use compilers like IMB xlc/xlC and the HP C compiler. ## (see the conditional assignment to $gccflag above). ## There are various ways to get dependency output from gcc. Here's ## why we pick this rather obscure method: ## - Don't want to use -MD because we'd like the dependencies to end ## up in a subdir. Having to rename by hand is ugly. ## (We might end up doing this anyway to support other compilers.) ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like ## -MM, not -M (despite what the docs say). Also, it might not be ## supported by the other compilers which use the 'gcc' depmode. ## - Using -M directly means running the compiler twice (even worse ## than renaming). if test -z "$gccflag"; then gccflag=-MD, fi "$@" -Wp,"$gccflag$tmpdepfile" stat=$? if test $stat -ne 0; then rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" echo "$object : \\" > "$depfile" # The second -e expression handles DOS-style file names with drive # letters. sed -e 's/^[^:]*: / /' \ -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile" ## This next piece of magic avoids the "deleted header file" problem. ## The problem is that when a header file which appears in a .P file ## is deleted, the dependency causes make to die (because there is ## typically no way to rebuild the header). We avoid this by adding ## dummy dependencies for each header file. Too bad gcc doesn't do ## this for us directly. ## Some versions of gcc put a space before the ':'. On the theory ## that the space means something, we add a space to the output as ## well. hp depmode also adds that space, but also prefixes the VPATH ## to the object. Take care to not repeat it in the output. ## Some versions of the HPUX 10.20 sed can't process this invocation ## correctly. Breaking it into two sed invocations is a workaround. tr ' ' "$nl" < "$tmpdepfile" \ | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \ | sed -e 's/$/ :/' >> "$depfile" rm -f "$tmpdepfile" ;; hp) # This case exists only to let depend.m4 do its work. It works by # looking at the text of this script. This case will never be run, # since it is checked for above. exit 1 ;; sgi) if test "$libtool" = yes; then "$@" "-Wp,-MDupdate,$tmpdepfile" else "$@" -MDupdate "$tmpdepfile" fi stat=$? if test $stat -ne 0; then rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files echo "$object : \\" > "$depfile" # Clip off the initial element (the dependent). Don't try to be # clever and replace this with sed code, as IRIX sed won't handle # lines with more than a fixed number of characters (4096 in # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines; # the IRIX cc adds comments like '#:fec' to the end of the # dependency line. tr ' ' "$nl" < "$tmpdepfile" \ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \ | tr "$nl" ' ' >> "$depfile" echo >> "$depfile" # The second pass generates a dummy entry for each header file. tr ' ' "$nl" < "$tmpdepfile" \ | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \ >> "$depfile" else make_dummy_depfile fi rm -f "$tmpdepfile" ;; xlc) # This case exists only to let depend.m4 do its work. It works by # looking at the text of this script. This case will never be run, # since it is checked for above. exit 1 ;; aix) # The C for AIX Compiler uses -M and outputs the dependencies # in a .u file. In older versions, this file always lives in the # current directory. Also, the AIX compiler puts '$object:' at the # start of each line; $object doesn't have directory information. # Version 6 uses the directory in both cases. set_dir_from "$object" set_base_from "$object" if test "$libtool" = yes; then tmpdepfile1=$dir$base.u tmpdepfile2=$base.u tmpdepfile3=$dir.libs/$base.u "$@" -Wc,-M else tmpdepfile1=$dir$base.u tmpdepfile2=$dir$base.u tmpdepfile3=$dir$base.u "$@" -M fi stat=$? if test $stat -ne 0; then rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" exit $stat fi for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" do test -f "$tmpdepfile" && break done aix_post_process_depfile ;; tcc) # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26 # FIXME: That version still under development at the moment of writing. # Make that this statement remains true also for stable, released # versions. # It will wrap lines (doesn't matter whether long or short) with a # trailing '\', as in: # # foo.o : \ # foo.c \ # foo.h \ # # It will put a trailing '\' even on the last line, and will use leading # spaces rather than leading tabs (at least since its commit 0394caf7 # "Emit spaces for -MD"). "$@" -MD -MF "$tmpdepfile" stat=$? if test $stat -ne 0; then rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'. # We have to change lines of the first kind to '$object: \'. sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile" # And for each line of the second kind, we have to emit a 'dep.h:' # dummy dependency, to avoid the deleted-header problem. sed -n -e 's|^ *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile" rm -f "$tmpdepfile" ;; ## The order of this option in the case statement is important, since the ## shell code in configure will try each of these formats in the order ## listed in this file. A plain '-MD' option would be understood by many ## compilers, so we must ensure this comes after the gcc and icc options. pgcc) # Portland's C compiler understands '-MD'. # Will always output deps to 'file.d' where file is the root name of the # source file under compilation, even if file resides in a subdirectory. # The object file name does not affect the name of the '.d' file. # pgcc 10.2 will output # foo.o: sub/foo.c sub/foo.h # and will wrap long lines using '\' : # foo.o: sub/foo.c ... \ # sub/foo.h ... \ # ... set_dir_from "$object" # Use the source, not the object, to determine the base name, since # that's sadly what pgcc will do too. set_base_from "$source" tmpdepfile=$base.d # For projects that build the same source file twice into different object # files, the pgcc approach of using the *source* file root name can cause # problems in parallel builds. Use a locking strategy to avoid stomping on # the same $tmpdepfile. lockdir=$base.d-lock trap " echo '$0: caught signal, cleaning up...' >&2 rmdir '$lockdir' exit 1 " 1 2 13 15 numtries=100 i=$numtries while test $i -gt 0; do # mkdir is a portable test-and-set. if mkdir "$lockdir" 2>/dev/null; then # This process acquired the lock. "$@" -MD stat=$? # Release the lock. rmdir "$lockdir" break else # If the lock is being held by a different process, wait # until the winning process is done or we timeout. while test -d "$lockdir" && test $i -gt 0; do sleep 1 i=`expr $i - 1` done fi i=`expr $i - 1` done trap - 1 2 13 15 if test $i -le 0; then echo "$0: failed to acquire lock after $numtries attempts" >&2 echo "$0: check lockdir '$lockdir'" >&2 exit 1 fi if test $stat -ne 0; then rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" # Each line is of the form `foo.o: dependent.h', # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'. # Do two passes, one to just change these to # `$object: dependent.h' and one to simply `dependent.h:'. sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile" # Some versions of the HPUX 10.20 sed can't process this invocation # correctly. Breaking it into two sed invocations is a workaround. sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \ | sed -e 's/$/ :/' >> "$depfile" rm -f "$tmpdepfile" ;; hp2) # The "hp" stanza above does not work with aCC (C++) and HP's ia64 # compilers, which have integrated preprocessors. The correct option # to use with these is +Maked; it writes dependencies to a file named # 'foo.d', which lands next to the object file, wherever that # happens to be. # Much of this is similar to the tru64 case; see comments there. set_dir_from "$object" set_base_from "$object" if test "$libtool" = yes; then tmpdepfile1=$dir$base.d tmpdepfile2=$dir.libs/$base.d "$@" -Wc,+Maked else tmpdepfile1=$dir$base.d tmpdepfile2=$dir$base.d "$@" +Maked fi stat=$? if test $stat -ne 0; then rm -f "$tmpdepfile1" "$tmpdepfile2" exit $stat fi for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" do test -f "$tmpdepfile" && break done if test -f "$tmpdepfile"; then sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile" # Add 'dependent.h:' lines. sed -ne '2,${ s/^ *// s/ \\*$// s/$/:/ p }' "$tmpdepfile" >> "$depfile" else make_dummy_depfile fi rm -f "$tmpdepfile" "$tmpdepfile2" ;; tru64) # The Tru64 compiler uses -MD to generate dependencies as a side # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'. # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put # dependencies in 'foo.d' instead, so we check for that too. # Subdirectories are respected. set_dir_from "$object" set_base_from "$object" if test "$libtool" = yes; then # Libtool generates 2 separate objects for the 2 libraries. These # two compilations output dependencies in $dir.libs/$base.o.d and # in $dir$base.o.d. We have to check for both files, because # one of the two compilations can be disabled. We should prefer # $dir$base.o.d over $dir.libs/$base.o.d because the latter is # automatically cleaned when .libs/ is deleted, while ignoring # the former would cause a distcleancheck panic. tmpdepfile1=$dir$base.o.d # libtool 1.5 tmpdepfile2=$dir.libs/$base.o.d # Likewise. tmpdepfile3=$dir.libs/$base.d # Compaq CCC V6.2-504 "$@" -Wc,-MD else tmpdepfile1=$dir$base.d tmpdepfile2=$dir$base.d tmpdepfile3=$dir$base.d "$@" -MD fi stat=$? if test $stat -ne 0; then rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" exit $stat fi for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" do test -f "$tmpdepfile" && break done # Same post-processing that is required for AIX mode. aix_post_process_depfile ;; msvc7) if test "$libtool" = yes; then showIncludes=-Wc,-showIncludes else showIncludes=-showIncludes fi "$@" $showIncludes > "$tmpdepfile" stat=$? grep -v '^Note: including file: ' "$tmpdepfile" if test $stat -ne 0; then rm -f "$tmpdepfile" exit $stat fi rm -f "$depfile" echo "$object : \\" > "$depfile" # The first sed program below extracts the file names and escapes # backslashes for cygpath. The second sed program outputs the file # name when reading, but also accumulates all include files in the # hold buffer in order to output them again at the end. This only # works with sed implementations that can handle large buffers. sed < "$tmpdepfile" -n ' /^Note: including file: *\(.*\)/ { s//\1/ s/\\/\\\\/g p }' | $cygpath_u | sort -u | sed -n ' s/ /\\ /g s/\(.*\)/'"$tab"'\1 \\/p s/.\(.*\) \\/\1:/ H $ { s/.*/'"$tab"'/ G p }' >> "$depfile" echo >> "$depfile" # make sure the fragment doesn't end with a backslash rm -f "$tmpdepfile" ;; msvc7msys) # This case exists only to let depend.m4 do its work. It works by # looking at the text of this script. This case will never be run, # since it is checked for above. exit 1 ;; #nosideeffect) # This comment above is used by automake to tell side-effect # dependency tracking mechanisms from slower ones. dashmstdout) # Important note: in order to support this mode, a compiler *must* # always write the preprocessed file to stdout, regardless of -o. "$@" || exit $? # Remove the call to Libtool. if test "$libtool" = yes; then while test "X$1" != 'X--mode=compile'; do shift done shift fi # Remove '-o $object'. IFS=" " for arg do case $arg in -o) shift ;; $object) shift ;; *) set fnord "$@" "$arg" shift # fnord shift # $arg ;; esac done test -z "$dashmflag" && dashmflag=-M # Require at least two characters before searching for ':' # in the target name. This is to cope with DOS-style filenames: # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise. "$@" $dashmflag | sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile" rm -f "$depfile" cat < "$tmpdepfile" > "$depfile" # Some versions of the HPUX 10.20 sed can't process this sed invocation # correctly. Breaking it into two sed invocations is a workaround. tr ' ' "$nl" < "$tmpdepfile" \ | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \ | sed -e 's/$/ :/' >> "$depfile" rm -f "$tmpdepfile" ;; dashXmstdout) # This case only exists to satisfy depend.m4. It is never actually # run, as this mode is specially recognized in the preamble. exit 1 ;; makedepend) "$@" || exit $? # Remove any Libtool call if test "$libtool" = yes; then while test "X$1" != 'X--mode=compile'; do shift done shift fi # X makedepend shift cleared=no eat=no for arg do case $cleared in no) set ""; shift cleared=yes ;; esac if test $eat = yes; then eat=no continue fi case "$arg" in -D*|-I*) set fnord "$@" "$arg"; shift ;; # Strip any option that makedepend may not understand. Remove # the object too, otherwise makedepend will parse it as a source file. -arch) eat=yes ;; -*|$object) ;; *) set fnord "$@" "$arg"; shift ;; esac done obj_suffix=`echo "$object" | sed 's/^.*\././'` touch "$tmpdepfile" ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@" rm -f "$depfile" # makedepend may prepend the VPATH from the source file name to the object. # No need to regex-escape $object, excess matching of '.' is harmless. sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile" # Some versions of the HPUX 10.20 sed can't process the last invocation # correctly. Breaking it into two sed invocations is a workaround. sed '1,2d' "$tmpdepfile" \ | tr ' ' "$nl" \ | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \ | sed -e 's/$/ :/' >> "$depfile" rm -f "$tmpdepfile" "$tmpdepfile".bak ;; cpp) # Important note: in order to support this mode, a compiler *must* # always write the preprocessed file to stdout. "$@" || exit $? # Remove the call to Libtool. if test "$libtool" = yes; then while test "X$1" != 'X--mode=compile'; do shift done shift fi # Remove '-o $object'. IFS=" " for arg do case $arg in -o) shift ;; $object) shift ;; *) set fnord "$@" "$arg" shift # fnord shift # $arg ;; esac done "$@" -E \ | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \ -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \ | sed '$ s: \\$::' > "$tmpdepfile" rm -f "$depfile" echo "$object : \\" > "$depfile" cat < "$tmpdepfile" >> "$depfile" sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile" rm -f "$tmpdepfile" ;; msvisualcpp) # Important note: in order to support this mode, a compiler *must* # always write the preprocessed file to stdout. "$@" || exit $? # Remove the call to Libtool. if test "$libtool" = yes; then while test "X$1" != 'X--mode=compile'; do shift done shift fi IFS=" " for arg do case "$arg" in -o) shift ;; $object) shift ;; "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI") set fnord "$@" shift shift ;; *) set fnord "$@" "$arg" shift shift ;; esac done "$@" -E 2>/dev/null | sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile" rm -f "$depfile" echo "$object : \\" > "$depfile" sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile" echo "$tab" >> "$depfile" sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile" rm -f "$tmpdepfile" ;; msvcmsys) # This case exists only to let depend.m4 do its work. It works by # looking at the text of this script. This case will never be run, # since it is checked for above. exit 1 ;; none) exec "$@" ;; *) echo "Unknown depmode $depmode" 1>&2 exit 1 ;; esac exit 0 # Local Variables: # mode: shell-script # sh-indentation: 2 # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-time-zone: "UTC" # time-stamp-end: "; # UTC" # End: ptunnel-ng-1.42/install-sh000077500000000000000000000354631346103123100155400ustar00rootroot00000000000000#!/bin/sh # install - install a program, script, or datafile scriptversion=2014-09-12.12; # UTC # This originates from X11R5 (mit/util/scripts/install.sh), which was # later released in X11R6 (xc/config/util/install.sh) with the # following copyright and license. # # Copyright (C) 1994 X Consortium # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to # deal in the Software without restriction, including without limitation the # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or # sell copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- # TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # # Except as contained in this notice, the name of the X Consortium shall not # be used in advertising or otherwise to promote the sale, use or other deal- # ings in this Software without prior written authorization from the X Consor- # tium. # # # FSF changes to this file are in the public domain. # # Calling this script install-sh is preferred over install.sh, to prevent # 'make' implicit rules from creating a file called install from it # when there is no Makefile. # # This script is compatible with the BSD install script, but was written # from scratch. tab=' ' nl=' ' IFS=" $tab$nl" # Set DOITPROG to "echo" to test this script. doit=${DOITPROG-} doit_exec=${doit:-exec} # Put in absolute file names if you don't have them in your path; # or use environment vars. chgrpprog=${CHGRPPROG-chgrp} chmodprog=${CHMODPROG-chmod} chownprog=${CHOWNPROG-chown} cmpprog=${CMPPROG-cmp} cpprog=${CPPROG-cp} mkdirprog=${MKDIRPROG-mkdir} mvprog=${MVPROG-mv} rmprog=${RMPROG-rm} stripprog=${STRIPPROG-strip} posix_mkdir= # Desired mode of installed file. mode=0755 chgrpcmd= chmodcmd=$chmodprog chowncmd= mvcmd=$mvprog rmcmd="$rmprog -f" stripcmd= src= dst= dir_arg= dst_arg= copy_on_change=false is_target_a_directory=possibly usage="\ Usage: $0 [OPTION]... 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Modeling helps to avoid false * positives. * * - A model file can't import any header files. * - Therefore only some built-in primitives like int, char and void are * available but not wchar_t, NULL etc. * - Modeling doesn't need full structs and typedefs. Rudimentary structs * and similar types are sufficient. * - An uninitialized local pointer is not an error. It signifies that the * variable could be either NULL or have some data. * * Coverity Scan doesn't pick up modifications automatically. The model file * must be uploaded by an admin in the analysis settings of */ /* ignore optarg NULL deref false positive for parse_options(...) */ int parse_options(int argc, char **argv) { __coverity_panic__(); } ptunnel-ng-1.42/selinux/000077500000000000000000000000001346103123100152105ustar00rootroot00000000000000ptunnel-ng-1.42/selinux/compile.sh000066400000000000000000000003071346103123100171740ustar00rootroot00000000000000#!/bin/sh set -x set -e OUTDIR="$(dirname $0)" checkmodule -M -m -o ${OUTDIR}/ptunnel-ng.mod ${OUTDIR}/ptunnel-ng.te semodule_package -o ${OUTDIR}/ptunnel-ng.pp -m ${OUTDIR}/ptunnel-ng.mod exit 0 ptunnel-ng-1.42/selinux/ptunnel-ng.te000066400000000000000000000037431346103123100176400ustar00rootroot00000000000000 module ptunnel-ng 1.0; require { type local_login_t; type file_context_t; type unconfined_t; type lvm_t; type bin_t; type gpmctl_t; type tracefs_t; type dpkg_script_t; type xconsole_device_t; type modules_object_t; type initrc_var_run_t; type var_run_t; type debugfs_t; type udev_var_run_t; type bootloader_t; type tmp_t; type fsadm_run_t; class file { create execmod execute execute_no_trans getattr link open read rename setattr unlink write }; class capability sys_module; class dir { add_name getattr remove_name search write }; class fifo_file getattr; class sock_file getattr; class system module_load; } #============= bootloader_t ============== allow bootloader_t debugfs_t:dir search; allow bootloader_t file_context_t:dir search; allow bootloader_t file_context_t:file { getattr open read }; allow bootloader_t fsadm_run_t:dir { add_name getattr remove_name write }; allow bootloader_t fsadm_run_t:file { create getattr link open read rename setattr unlink write }; allow bootloader_t gpmctl_t:sock_file getattr; allow bootloader_t modules_object_t:system module_load; allow bootloader_t self:capability sys_module; allow bootloader_t tmp_t:file { execute execute_no_trans getattr open read }; allow bootloader_t tracefs_t:dir search; allow bootloader_t udev_var_run_t:file { getattr open read }; allow bootloader_t xconsole_device_t:fifo_file getattr; #============= dpkg_script_t ============== #!!!! This avc can be allowed using the boolean 'allow_execmod' allow dpkg_script_t bin_t:file execmod; #============= local_login_t ============== allow local_login_t initrc_var_run_t:file unlink; allow local_login_t var_run_t:dir { add_name remove_name write }; allow local_login_t var_run_t:file { getattr open read rename unlink }; #============= lvm_t ============== allow lvm_t initrc_var_run_t:dir { add_name getattr write }; #============= unconfined_t ============== #!!!! 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All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #include #include #include #include "challenge.h" #include "options.h" #include "md5.h" #include "utils.h" /* generate_challenge: Generates a random challenge, incorporating the current * local timestamp to avoid replay attacks. */ challenge_t* generate_challenge(void) { struct timeval tt; challenge_t *c; int i; c = (challenge_t *) calloc(1, sizeof(challenge_t)); gettimeofday(&tt, 0); c->sec = tt.tv_sec; c->usec_rnd = tt.tv_usec + pt_random(); for (i=0;i<6;i++) c->random[i] = pt_random(); return c; } /* generate_response: Generates a response to the given challenge. The response * is generated by combining the concatenating the challenge data with the * md5 digest of the password, and then calculating the MD5 digest of the * entire buffer. The result is stored in the passed-in challenge, overwriting * the challenge data. */ void generate_response(challenge_t *challenge) { md5_byte_t buf[sizeof(challenge_t)+kMD5_digest_size]; md5_state_t state; memcpy(buf, challenge, sizeof(challenge_t)); memcpy(&buf[sizeof(challenge_t)], opts.password_digest, kMD5_digest_size); memset(challenge, 0, sizeof(challenge_t)); md5_init(&state); md5_append(&state, buf, sizeof(challenge_t)+kMD5_digest_size); md5_finish(&state, (md5_byte_t*)challenge); } /* validate_challenge: Checks whether a given response matches the expected * response, returning 1 if validation succeeded, and 0 otherwise. Note that * overwriting the local challenge with the challenge result is not a problem, * as the data will not be used again anyway (authentication either succeeds, * or the connection is closed down). */ int validate_challenge(challenge_t *local, challenge_t *remote) { generate_response(local); if (memcmp(local, remote, sizeof(challenge_t)) == 0) return 1; return 0; } ptunnel-ng-1.42/src/challenge.h000066400000000000000000000051761346103123100164140ustar00rootroot00000000000000/* * challenge.h * ptunnel is licensed under the BSD license: * * Copyright (c) 2004-2011, Daniel Stoedle , * Yellow Lemon Software. All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #ifndef CHALLENGE_H #define CHALLENGE_H 1 #include /** challenge_t: This structure contains the pseudo-random challenge used for * authentication. */ typedef struct challenge_t { /** tv_sec as returned by gettimeofday */ uint32_t sec; /** tv_usec as returned by gettimeofday + random value */ uint32_t usec_rnd; /** random values */ uint32_t random[6]; } __attribute__ ((packed)) challenge_t; challenge_t* generate_challenge(void); void generate_response(challenge_t *challenge); int validate_challenge(challenge_t *local, challenge_t *remote); #endif ptunnel-ng-1.42/src/config.h.in000066400000000000000000000176271346103123100163500ustar00rootroot00000000000000/* src/config.h.in. Generated from configure.ac by autoheader. */ /* Define to 1 if you have the `arc4random' function. */ #undef HAVE_ARC4RANDOM /* Define to 1 if you have the header file. */ #undef HAVE_ARPA_INET_H /* Define to 1 if you have the header file. */ #undef HAVE_ASSERT_H /* Define to 1 if you have the header file. */ #undef HAVE_BSD_STDLIB_H /* Define to 1 if you have the `calloc' function. */ #undef HAVE_CALLOC /* Define to 1 if you have the `close' function. */ #undef HAVE_CLOSE /* Define to 1 if you don't have `vprintf' but do have `_doprnt.' */ #undef HAVE_DOPRNT /* Define to 1 if you have the header file. */ #undef HAVE_ERRNO_H /* Define to 1 if you have the `exit' function. */ #undef HAVE_EXIT /* Define to 1 if you have the `fclose' function. */ #undef HAVE_FCLOSE /* Define to 1 if you have the `fopen' function. */ #undef HAVE_FOPEN /* Define to 1 if you have the `fprintf' function. */ #undef HAVE_FPRINTF /* Define to 1 if you have the `free' function. */ #undef HAVE_FREE /* Define to 1 if you have the `freeaddrinfo' function. */ #undef HAVE_FREEADDRINFO /* Define to 1 if you have the `gai_strerror' function. */ #undef HAVE_GAI_STRERROR /* Define to 1 if you have the `getaddrinfo' function. */ #undef HAVE_GETADDRINFO /* Define to 1 if you have the `getopt_long' function. */ #undef HAVE_GETOPT_LONG /* Define to 1 if you have the `gettimeofday' function. */ #undef HAVE_GETTIMEOFDAY /* Define to 1 if you have the header file. */ #undef HAVE_GRP_H /* Define to 1 if you have the `inet_ntoa' function. */ #undef HAVE_INET_NTOA /* Define to 1 if you have the header file. */ #undef HAVE_INTTYPES_H /* Define to 1 if you have the `ws2_32' library (-lws2_32). */ #undef HAVE_LIBWS2_32 /* Define to 1 if you have the `malloc' function. */ #undef HAVE_MALLOC /* Define to 1 if you have the `memcpy' function. */ #undef HAVE_MEMCPY /* Define to 1 if you have the header file. */ #undef HAVE_MEMORY_H /* Define to 1 if you have the `memset' function. */ #undef HAVE_MEMSET /* Define to 1 if you have the header file. */ #undef HAVE_NETDB_H /* Define to 1 if you have the header file. */ #undef HAVE_NETINET_IN_H /* Define to 1 if you have the header file. */ #undef HAVE_NET_ETHERNET_H /* Define to 1 if you have the `pcap_close' function. */ #undef HAVE_PCAP_CLOSE /* Define to 1 if you have the `pcap_compile' function. */ #undef HAVE_PCAP_COMPILE /* Define to 1 if you have the `pcap_dispatch' function. */ #undef HAVE_PCAP_DISPATCH /* Define to 1 if you have the `pcap_findalldevs' function. */ #undef HAVE_PCAP_FINDALLDEVS /* Define to 1 if you have the `pcap_freealldevs' function. */ #undef HAVE_PCAP_FREEALLDEVS /* Define to 1 if you have the header file. */ #undef HAVE_PCAP_H /* Define to 1 if you have the `pcap_setfilter' function. */ #undef HAVE_PCAP_SETFILTER /* Define to 1 if you have the `printf' function. */ #undef HAVE_PRINTF /* Define to 1 if you have the header file. */ #undef HAVE_PTHREAD_H /* Define to 1 if you have the `pthread_mutex_init' function. */ #undef HAVE_PTHREAD_MUTEX_INIT /* Define to 1 if you have the `pthread_mutex_lock' function. */ #undef HAVE_PTHREAD_MUTEX_LOCK /* Define to 1 if you have the `pthread_mutex_unlock' function. */ #undef HAVE_PTHREAD_MUTEX_UNLOCK /* Define to 1 if you have the header file. */ #undef HAVE_PWD_H /* Define to 1 if you have the header file. */ #undef HAVE_SELINUX_SELINUX_H /* Define to 1 if you have the `signal' function. */ #undef HAVE_SIGNAL /* Define to 1 if you have the header file. */ #undef HAVE_SIGNAL_H /* Define to 1 if you have the `sprintf' function. */ #undef HAVE_SPRINTF /* Define to 1 if you have the header file. */ #undef HAVE_STDARG_H /* Define to 1 if you have the header file. */ #undef HAVE_STDINT_H /* Define to 1 if you have the header file. */ #undef HAVE_STDIO_H /* Define to 1 if you have the header file. */ #undef HAVE_STDLIB_H /* Define to 1 if you have the `strerror' function. */ #undef HAVE_STRERROR /* Define to 1 if you have the header file. */ #undef HAVE_STRINGS_H /* Define to 1 if you have the header file. */ #undef HAVE_STRING_H /* Define to 1 if you have the `strlen' function. */ #undef HAVE_STRLEN /* Define to 1 if you have the `strncmp' function. */ #undef HAVE_STRNCMP /* Define to 1 if you have the `strstr' function. */ #undef HAVE_STRSTR /* Define to 1 if you have the `strtol' function. */ #undef HAVE_STRTOL /* Define to 1 if you have the `strtoul' function. */ #undef HAVE_STRTOUL /* Define to 1 if you have the `syslog' function. */ #undef HAVE_SYSLOG /* Define to 1 if you have the header file. */ #undef HAVE_SYSLOG_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_SOCKET_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_STAT_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_TYPES_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_UNISTD_H /* Define to 1 if you have the header file. */ #undef HAVE_TIME_H /* Define to 1 if you have the header file. */ #undef HAVE_UNISTD_H /* Define to 1 if you have the `vprintf' function. */ #undef HAVE_VPRINTF /* Define to 1 if you have the `vsnprintf' function. */ #undef HAVE_VSNPRINTF /* Define to 1 if you have the header file. */ #undef HAVE_WINDOWS_H /* Define to 1 if you have the header file. */ #undef HAVE_WINSOCK2_H /* Define to 1 if you have the header file. */ #undef HAVE_WS2TCPIP_H /* Define to 1 if the system has the type `_Bool'. */ #undef HAVE__BOOL /* Name of package */ #undef PACKAGE /* Define to the address where bug reports for this package should be sent. */ #undef PACKAGE_BUGREPORT /* Define to the full name of this package. */ #undef PACKAGE_NAME /* Define to the full name and version of this package. */ #undef PACKAGE_STRING /* Define to the one symbol short name of this package. */ #undef PACKAGE_TARNAME /* Define to the home page for this package. */ #undef PACKAGE_URL /* Define to the version of this package. */ #undef PACKAGE_VERSION /* set the path to the random device you want to use for pt_random */ #undef RNGDEV /* The size of `char', as computed by sizeof. */ #undef SIZEOF_CHAR /* The size of `int', as computed by sizeof. */ #undef SIZEOF_INT /* The size of `uint16_t', as computed by sizeof. */ #undef SIZEOF_UINT16_T /* The size of `uint32_t', as computed by sizeof. */ #undef SIZEOF_UINT32_T /* The size of `uint8_t', as computed by sizeof. */ #undef SIZEOF_UINT8_T /* Define to 1 if you have the ANSI C header files. */ #undef STDC_HEADERS /* Enable extensions on AIX 3, Interix. */ #ifndef _ALL_SOURCE # undef _ALL_SOURCE #endif /* Enable GNU extensions on systems that have them. */ #ifndef _GNU_SOURCE # undef _GNU_SOURCE #endif /* Enable threading extensions on Solaris. */ #ifndef _POSIX_PTHREAD_SEMANTICS # undef _POSIX_PTHREAD_SEMANTICS #endif /* Enable extensions on HP NonStop. */ #ifndef _TANDEM_SOURCE # undef _TANDEM_SOURCE #endif /* Enable general extensions on Solaris. */ #ifndef __EXTENSIONS__ # undef __EXTENSIONS__ #endif /* Version number of package */ #undef VERSION /* Define to 1 if on MINIX. */ #undef _MINIX /* Define to 2 if the system does not provide POSIX.1 features except with this defined. */ #undef _POSIX_1_SOURCE /* Define to 1 if you need to in order for `stat' and other things to work. */ #undef _POSIX_SOURCE /* Define to empty if `const' does not conform to ANSI C. */ #undef const /* Define to `__inline__' or `__inline' if that's what the C compiler calls it, or to nothing if 'inline' is not supported under any name. */ #ifndef __cplusplus #undef inline #endif /* Define to `unsigned int' if does not define. */ #undef size_t ptunnel-ng-1.42/src/md5.c000066400000000000000000000302261346103123100151440ustar00rootroot00000000000000/* Copyright (C) 1999, 2000, 2002 Aladdin Enterprises. All rights reserved. This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. L. Peter Deutsch ghost@aladdin.com */ /* $Id: md5.c,v 1.1 2005/04/15 07:37:22 daniels Exp $ */ /* Independent implementation of MD5 (RFC 1321). This code implements the MD5 Algorithm defined in RFC 1321, whose text is available at http://www.ietf.org/rfc/rfc1321.txt The code is derived from the text of the RFC, including the test suite (section A.5) but excluding the rest of Appendix A. It does not include any code or documentation that is identified in the RFC as being copyrighted. The original and principal author of md5.c is L. Peter Deutsch . Other authors are noted in the change history that follows (in reverse chronological order): 2002-04-13 lpd Clarified derivation from RFC 1321; now handles byte order either statically or dynamically; added missing #include in library. 2002-03-11 lpd Corrected argument list for main(), and added int return type, in test program and T value program. 2002-02-21 lpd Added missing #include in test program. 2000-07-03 lpd Patched to eliminate warnings about "constant is unsigned in ANSI C, signed in traditional"; made test program self-checking. 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5). 1999-05-03 lpd Original version. */ #include "md5.h" #include #undef BYTE_ORDER /* 1 = big-endian, -1 = little-endian, 0 = unknown */ #ifdef ARCH_IS_BIG_ENDIAN # define BYTE_ORDER (ARCH_IS_BIG_ENDIAN ? 1 : -1) #else # define BYTE_ORDER 0 #endif #define T_MASK ((md5_word_t)~0) #define T1 /* 0xd76aa478 */ (T_MASK ^ 0x28955b87) #define T2 /* 0xe8c7b756 */ (T_MASK ^ 0x173848a9) #define T3 0x242070db #define T4 /* 0xc1bdceee */ (T_MASK ^ 0x3e423111) #define T5 /* 0xf57c0faf */ (T_MASK ^ 0x0a83f050) #define T6 0x4787c62a #define T7 /* 0xa8304613 */ (T_MASK ^ 0x57cfb9ec) #define T8 /* 0xfd469501 */ (T_MASK ^ 0x02b96afe) #define T9 0x698098d8 #define T10 /* 0x8b44f7af */ (T_MASK ^ 0x74bb0850) #define T11 /* 0xffff5bb1 */ (T_MASK ^ 0x0000a44e) #define T12 /* 0x895cd7be */ (T_MASK ^ 0x76a32841) #define T13 0x6b901122 #define T14 /* 0xfd987193 */ (T_MASK ^ 0x02678e6c) #define T15 /* 0xa679438e */ (T_MASK ^ 0x5986bc71) #define T16 0x49b40821 #define T17 /* 0xf61e2562 */ (T_MASK ^ 0x09e1da9d) #define T18 /* 0xc040b340 */ (T_MASK ^ 0x3fbf4cbf) #define T19 0x265e5a51 #define T20 /* 0xe9b6c7aa */ (T_MASK ^ 0x16493855) #define T21 /* 0xd62f105d */ (T_MASK ^ 0x29d0efa2) #define T22 0x02441453 #define T23 /* 0xd8a1e681 */ (T_MASK ^ 0x275e197e) #define T24 /* 0xe7d3fbc8 */ (T_MASK ^ 0x182c0437) #define T25 0x21e1cde6 #define T26 /* 0xc33707d6 */ (T_MASK ^ 0x3cc8f829) #define T27 /* 0xf4d50d87 */ (T_MASK ^ 0x0b2af278) #define T28 0x455a14ed #define T29 /* 0xa9e3e905 */ (T_MASK ^ 0x561c16fa) #define T30 /* 0xfcefa3f8 */ (T_MASK ^ 0x03105c07) #define T31 0x676f02d9 #define T32 /* 0x8d2a4c8a */ (T_MASK ^ 0x72d5b375) #define T33 /* 0xfffa3942 */ (T_MASK ^ 0x0005c6bd) #define T34 /* 0x8771f681 */ (T_MASK ^ 0x788e097e) #define T35 0x6d9d6122 #define T36 /* 0xfde5380c */ (T_MASK ^ 0x021ac7f3) #define T37 /* 0xa4beea44 */ (T_MASK ^ 0x5b4115bb) #define T38 0x4bdecfa9 #define T39 /* 0xf6bb4b60 */ (T_MASK ^ 0x0944b49f) #define T40 /* 0xbebfbc70 */ (T_MASK ^ 0x4140438f) #define T41 0x289b7ec6 #define T42 /* 0xeaa127fa */ (T_MASK ^ 0x155ed805) #define T43 /* 0xd4ef3085 */ (T_MASK ^ 0x2b10cf7a) #define T44 0x04881d05 #define T45 /* 0xd9d4d039 */ (T_MASK ^ 0x262b2fc6) #define T46 /* 0xe6db99e5 */ (T_MASK ^ 0x1924661a) #define T47 0x1fa27cf8 #define T48 /* 0xc4ac5665 */ (T_MASK ^ 0x3b53a99a) #define T49 /* 0xf4292244 */ (T_MASK ^ 0x0bd6ddbb) #define T50 0x432aff97 #define T51 /* 0xab9423a7 */ (T_MASK ^ 0x546bdc58) #define T52 /* 0xfc93a039 */ (T_MASK ^ 0x036c5fc6) #define T53 0x655b59c3 #define T54 /* 0x8f0ccc92 */ (T_MASK ^ 0x70f3336d) #define T55 /* 0xffeff47d */ (T_MASK ^ 0x00100b82) #define T56 /* 0x85845dd1 */ (T_MASK ^ 0x7a7ba22e) #define T57 0x6fa87e4f #define T58 /* 0xfe2ce6e0 */ (T_MASK ^ 0x01d3191f) #define T59 /* 0xa3014314 */ (T_MASK ^ 0x5cfebceb) #define T60 0x4e0811a1 #define T61 /* 0xf7537e82 */ (T_MASK ^ 0x08ac817d) #define T62 /* 0xbd3af235 */ (T_MASK ^ 0x42c50dca) #define T63 0x2ad7d2bb #define T64 /* 0xeb86d391 */ (T_MASK ^ 0x14792c6e) static void md5_process(md5_state_t *pms, const md5_byte_t *data /*[64]*/) { md5_word_t a = pms->abcd[0], b = pms->abcd[1], c = pms->abcd[2], d = pms->abcd[3]; md5_word_t t; #if BYTE_ORDER > 0 /* Define storage only for big-endian CPUs. */ md5_word_t X[16]; #else /* Define storage for little-endian or both types of CPUs. */ md5_word_t xbuf[16]; const md5_word_t *X; #endif { #if BYTE_ORDER == 0 /* * Determine dynamically whether this is a big-endian or * little-endian machine, since we can use a more efficient * algorithm on the latter. */ static const int w = 1; if (*((const md5_byte_t *)&w)) /* dynamic little-endian */ #endif #if BYTE_ORDER <= 0 /* little-endian */ { /* * On little-endian machines, we can process properly aligned * data without copying it. */ if (!((data - (const md5_byte_t *)0) & 3)) { /* data are properly aligned */ X = (const md5_word_t *)data; } else { /* not aligned */ memcpy(xbuf, data, 64); X = xbuf; } } #endif #if BYTE_ORDER == 0 else /* dynamic big-endian */ #endif #if BYTE_ORDER >= 0 /* big-endian */ { /* * On big-endian machines, we must arrange the bytes in the * right order. */ const md5_byte_t *xp = data; int i; # if BYTE_ORDER == 0 X = xbuf; /* (dynamic only) */ # else # define xbuf X /* (static only) */ # endif for (i = 0; i < 16; ++i, xp += 4) xbuf[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24); } #endif } #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n)))) /* Round 1. */ /* Let [abcd k s i] denote the operation a = b + ((a + F(b,c,d) + X[k] + T[i]) <<< s). */ #define F(x, y, z) (((x) & (y)) | (~(x) & (z))) #define SET(a, b, c, d, k, s, Ti)\ t = a + F(b,c,d) + X[k] + Ti;\ a = ROTATE_LEFT(t, s) + b /* Do the following 16 operations. */ SET(a, b, c, d, 0, 7, T1); SET(d, a, b, c, 1, 12, T2); SET(c, d, a, b, 2, 17, T3); SET(b, c, d, a, 3, 22, T4); SET(a, b, c, d, 4, 7, T5); SET(d, a, b, c, 5, 12, T6); SET(c, d, a, b, 6, 17, T7); SET(b, c, d, a, 7, 22, T8); SET(a, b, c, d, 8, 7, T9); SET(d, a, b, c, 9, 12, T10); SET(c, d, a, b, 10, 17, T11); SET(b, c, d, a, 11, 22, T12); SET(a, b, c, d, 12, 7, T13); SET(d, a, b, c, 13, 12, T14); SET(c, d, a, b, 14, 17, T15); SET(b, c, d, a, 15, 22, T16); #undef SET /* Round 2. */ /* Let [abcd k s i] denote the operation a = b + ((a + G(b,c,d) + X[k] + T[i]) <<< s). */ #define G(x, y, z) (((x) & (z)) | ((y) & ~(z))) #define SET(a, b, c, d, k, s, Ti)\ t = a + G(b,c,d) + X[k] + Ti;\ a = ROTATE_LEFT(t, s) + b /* Do the following 16 operations. */ SET(a, b, c, d, 1, 5, T17); SET(d, a, b, c, 6, 9, T18); SET(c, d, a, b, 11, 14, T19); SET(b, c, d, a, 0, 20, T20); SET(a, b, c, d, 5, 5, T21); SET(d, a, b, c, 10, 9, T22); SET(c, d, a, b, 15, 14, T23); SET(b, c, d, a, 4, 20, T24); SET(a, b, c, d, 9, 5, T25); SET(d, a, b, c, 14, 9, T26); SET(c, d, a, b, 3, 14, T27); SET(b, c, d, a, 8, 20, T28); SET(a, b, c, d, 13, 5, T29); SET(d, a, b, c, 2, 9, T30); SET(c, d, a, b, 7, 14, T31); SET(b, c, d, a, 12, 20, T32); #undef SET /* Round 3. */ /* Let [abcd k s t] denote the operation a = b + ((a + H(b,c,d) + X[k] + T[i]) <<< s). */ #define H(x, y, z) ((x) ^ (y) ^ (z)) #define SET(a, b, c, d, k, s, Ti)\ t = a + H(b,c,d) + X[k] + Ti;\ a = ROTATE_LEFT(t, s) + b /* Do the following 16 operations. */ SET(a, b, c, d, 5, 4, T33); SET(d, a, b, c, 8, 11, T34); SET(c, d, a, b, 11, 16, T35); SET(b, c, d, a, 14, 23, T36); SET(a, b, c, d, 1, 4, T37); SET(d, a, b, c, 4, 11, T38); SET(c, d, a, b, 7, 16, T39); SET(b, c, d, a, 10, 23, T40); SET(a, b, c, d, 13, 4, T41); SET(d, a, b, c, 0, 11, T42); SET(c, d, a, b, 3, 16, T43); SET(b, c, d, a, 6, 23, T44); SET(a, b, c, d, 9, 4, T45); SET(d, a, b, c, 12, 11, T46); SET(c, d, a, b, 15, 16, T47); SET(b, c, d, a, 2, 23, T48); #undef SET /* Round 4. */ /* Let [abcd k s t] denote the operation a = b + ((a + I(b,c,d) + X[k] + T[i]) <<< s). */ #define I(x, y, z) ((y) ^ ((x) | ~(z))) #define SET(a, b, c, d, k, s, Ti)\ t = a + I(b,c,d) + X[k] + Ti;\ a = ROTATE_LEFT(t, s) + b /* Do the following 16 operations. */ SET(a, b, c, d, 0, 6, T49); SET(d, a, b, c, 7, 10, T50); SET(c, d, a, b, 14, 15, T51); SET(b, c, d, a, 5, 21, T52); SET(a, b, c, d, 12, 6, T53); SET(d, a, b, c, 3, 10, T54); SET(c, d, a, b, 10, 15, T55); SET(b, c, d, a, 1, 21, T56); SET(a, b, c, d, 8, 6, T57); SET(d, a, b, c, 15, 10, T58); SET(c, d, a, b, 6, 15, T59); SET(b, c, d, a, 13, 21, T60); SET(a, b, c, d, 4, 6, T61); SET(d, a, b, c, 11, 10, T62); SET(c, d, a, b, 2, 15, T63); SET(b, c, d, a, 9, 21, T64); #undef SET /* Then perform the following additions. (That is increment each of the four registers by the value it had before this block was started.) */ pms->abcd[0] += a; pms->abcd[1] += b; pms->abcd[2] += c; pms->abcd[3] += d; } void md5_init(md5_state_t *pms) { pms->count[0] = pms->count[1] = 0; pms->abcd[0] = 0x67452301; pms->abcd[1] = /*0xefcdab89*/ T_MASK ^ 0x10325476; pms->abcd[2] = /*0x98badcfe*/ T_MASK ^ 0x67452301; pms->abcd[3] = 0x10325476; } void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes) { const md5_byte_t *p = data; int left = nbytes; int offset = (pms->count[0] >> 3) & 63; md5_word_t nbits = (md5_word_t)(nbytes << 3); if (nbytes <= 0) return; /* Update the message length. */ pms->count[1] += nbytes >> 29; pms->count[0] += nbits; if (pms->count[0] < nbits) pms->count[1]++; /* Process an initial partial block. */ if (offset) { int copy = (offset + nbytes > 64 ? 64 - offset : nbytes); memcpy(pms->buf + offset, p, copy); if (offset + copy < 64) return; p += copy; left -= copy; md5_process(pms, pms->buf); } /* Process full blocks. */ for (; left >= 64; p += 64, left -= 64) md5_process(pms, p); /* Process a final partial block. */ if (left) memcpy(pms->buf, p, left); } void md5_finish(md5_state_t *pms, md5_byte_t digest[16]) { static const md5_byte_t pad[64] = { 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; md5_byte_t data[8]; int i; /* Save the length before padding. */ for (i = 0; i < 8; ++i) data[i] = (md5_byte_t)(pms->count[i >> 2] >> ((i & 3) << 3)); /* Pad to 56 bytes mod 64. */ md5_append(pms, pad, ((55 - (pms->count[0] >> 3)) & 63) + 1); /* Append the length. */ md5_append(pms, data, 8); for (i = 0; i < 16; ++i) digest[i] = (md5_byte_t)(pms->abcd[i >> 2] >> ((i & 3) << 3)); } ptunnel-ng-1.42/src/md5.h000066400000000000000000000065341346103123100151560ustar00rootroot00000000000000/* Copyright (C) 1999, 2002 Aladdin Enterprises. All rights reserved. This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. L. Peter Deutsch ghost@aladdin.com */ /* $Id: md5.h,v 1.1 2005/04/15 07:37:22 daniels Exp $ */ /* Independent implementation of MD5 (RFC 1321). This code implements the MD5 Algorithm defined in RFC 1321, whose text is available at http://www.ietf.org/rfc/rfc1321.txt The code is derived from the text of the RFC, including the test suite (section A.5) but excluding the rest of Appendix A. It does not include any code or documentation that is identified in the RFC as being copyrighted. The original and principal author of md5.h is L. Peter Deutsch . Other authors are noted in the change history that follows (in reverse chronological order): 2002-04-13 lpd Removed support for non-ANSI compilers; removed references to Ghostscript; clarified derivation from RFC 1321; now handles byte order either statically or dynamically. 1999-11-04 lpd Edited comments slightly for automatic TOC extraction. 1999-10-18 lpd Fixed typo in header comment (ansi2knr rather than md5); added conditionalization for C++ compilation from Martin Purschke . 1999-05-03 lpd Original version. */ #ifndef md5_INCLUDED # define md5_INCLUDED /* * This package supports both compile-time and run-time determination of CPU * byte order. If ARCH_IS_BIG_ENDIAN is defined as 0, the code will be * compiled to run only on little-endian CPUs; if ARCH_IS_BIG_ENDIAN is * defined as non-zero, the code will be compiled to run only on big-endian * CPUs; if ARCH_IS_BIG_ENDIAN is not defined, the code will be compiled to * run on either big- or little-endian CPUs, but will run slightly less * efficiently on either one than if ARCH_IS_BIG_ENDIAN is defined. */ typedef unsigned char md5_byte_t; /* 8-bit byte */ typedef unsigned int md5_word_t; /* 32-bit word */ #define MD5_LEN 16 /* Define the state of the MD5 Algorithm. */ typedef struct md5_state_s { md5_word_t count[2]; /* message length in bits, lsw first */ md5_word_t abcd[4]; /* digest buffer */ md5_byte_t buf[64]; /* accumulate block */ } md5_state_t; #ifdef __cplusplus extern "C" { #endif /* Initialize the algorithm. */ void md5_init(md5_state_t *pms); /* Append a string to the message. */ void md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes); /* Finish the message and return the digest. */ void md5_finish(md5_state_t *pms, md5_byte_t digest[MD5_LEN]); #ifdef __cplusplus } /* end extern "C" */ #endif #endif /* md5_INCLUDED */ ptunnel-ng-1.42/src/options.c000066400000000000000000000457431346103123100161640ustar00rootroot00000000000000/* * options.c * ptunnel is licensed under the BSD license: * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #ifdef WIN32 #include #endif #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "options.h" #include "utils.h" #include "ptunnel.h" #include "md5.h" struct options opts; enum option_type { OPT_BOOL, OPT_DEC32, OPT_HEX32, OPT_STR }; struct option_usage { const char *short_help; int required; enum option_type otype; union { int32_t num; uint32_t unum; const char *str; }; const char *long_help; }; static const struct option_usage usage[] = { /** --magic */ {"magic", 0, OPT_HEX32, {.unum = 0xdeadc0de}, "Set ptunnel magic hexadecimal number. (32-bit unsigned)\n" "It is an identifier for all ICMP/UDP packets\n" "and can be used to bypass Cisco IPS fingerprint scan.\n" "This value has to be the same on the server and client!\n" }, /** --proxy */ {"address", 1, OPT_STR, {.str = NULL}, "Set address of peer running packet forwarder. This causes\n" "ptunnel to operate in forwarding mode (Client) - the absence of this\n" "option causes ptunnel to operate in proxy mode (Server).\n" }, /** --listen */ {"port", 0, OPT_DEC32, {.unum = 2222}, "Set TCP listening port (only used when operating in forward mode)\n" }, /** --remote-addr */ {"address", 1, OPT_STR, {.str = "127.0.0.1"}, "Set remote proxy destination address if client\n" "Restrict to only this destination address if server\n" }, /** --remote-port */ {"port", 1, OPT_DEC32, {.unum = 22}, "Set remote proxy destination port if client\n" "Restrict to only this destination port if server\n" }, /** --connections */ {"connections", 0, OPT_DEC32, {.unum = kMax_tunnels}, "Set maximum number of concurrent tunnels\n" }, /** --verbosity */ {"level", 0, OPT_DEC32, {.num = kLog_event}, "Verbosity level (-1 to 4, where -1 is no output, and 4 is all output)\n" "The special level 5 (or higher) includes xfer logging (lots of output)\n" }, /** --libpcap */ {"interface", 0, OPT_STR, {.str = "eth0"}, #ifndef HAVE_PCAP "(Not available on this platform.)\n" #endif "Enable libpcap on the given device.\n" }, /** --list-libpcap-devices */ {NULL, 0, OPT_BOOL, {.num = 0}, #ifndef HAVE_PCAP "(Not available on this platform.)\n" #endif "List all available pcap devices.\n" }, /** --logfile */ {"file", 0, OPT_STR, {.str = "/var/log/ptunnel.log"}, "Specify a file to log to, rather than printing to standard out.\n" }, /** --statistics */ {NULL, 0, OPT_BOOL, {.num = 0}, "Client only. Enables continuous output of statistics (packet loss, etc.)\n" }, /** --passwd */ {"password", 0, OPT_STR, {.str = NULL}, "Set a password (must be same on client and proxy)\n" }, /** --udp */ {NULL, 0, OPT_BOOL, {.num = 0}, "Toggle use of UDP instead of ICMP. Proxy will listen on port 53 (must be root).\n" }, /** --unprivileged */ {NULL, 0, OPT_BOOL, {.num = 0}, "Run proxy in unprivileged mode. This causes the proxy to forward\n" "packets using standard echo requests, instead of crafting custom echo replies.\n" "Unprivileged mode will only work on some systems, and is in general less reliable\n" "than running in privileged mode.\n" }, /** --window-size */ {"packets", 0, OPT_DEC32, {.unum = 64}, "Tune the number of packets that can be in-flight at the same time.\n" "Increasing the window size will improve the maximum potential bandwidth.\n" }, /** --ack-interval */ {"milliseconds", 0, OPT_DEC32, {.unum = 1000}, "Tune the explicit acknowledgement interval (in milliseconds)\n" "Decreasing the acknowledgement interval can improve NAT stability.\n" }, /** --resend-interval */ {"milliseconds", 0, OPT_DEC32, {.unum = 1500}, "Tune the lost packet timeout (in milliseconds)\n" "Decreasing the resend interval can compensate for frequent packet loss.\n" }, /** --payload-size */ {"bytes", 0, OPT_DEC32, {.unum = 1024}, "Tune the amount of data per packet (in bytes)\n" "Decreasing the payload size can avoid corruption of large packets.\n" "Increasing the payload size can compensate for out-of-order delivery.\n" }, /** --empty-pings */ {"count", 0, OPT_DEC32, {.unum = 0}, "Tune the number of empty pings to send with each explicit acknowledgement.\n" "Empty pings can compensate for ICMP sequence number inspection.\n" }, /** --daemon */ {"pidfile", 0, OPT_STR, {.str = "/run/ptunnel.pid"}, #ifdef WIN32 "(Not available on this platform.)\n" #endif "Run in background, the PID will be written in the file supplied as argument\n" }, /** --syslog */ {NULL, 0, OPT_BOOL, {.num = 0}, #ifdef WIN32 "(Not available on this platform.)\n" #endif "Output debug to syslog instead of standard out.\n" }, /** --user */ {"user", 0, OPT_STR, {.str = "nobody"}, #ifdef WIN32 "(Not available on this platform.)\n" #endif "When started in privileged mode, drop down to user's rights as soon as possible\n" }, /** --group */ {"group", 0, OPT_STR, {.str = "nogroup"}, #ifdef WIN32 "(Not available on this platform.)\n" #endif "When started in privileged mode, drop down to group's rights as soon as possible\n" }, /** --chroot */ {"directory", 0, OPT_STR, {.str = "/var/lib/ptunnel"}, #ifdef WIN32 "(Not available on this platform.)\n" #endif "When started in privileged mode, restrict file access to the specified directory\n" }, /** --setcon */ {"context", 0, OPT_STR, {.str = "ptunnel"}, #ifndef HAVE_SELINUX "(Not available on this platform.)\n" #endif "Set SELinux context when all there is left to do are network I/O operations\n" "To combine with --chroot you will have to `mount --bind /proc /chrootdir/proc`\n" }, /** --help */ {NULL, 0, OPT_STR, {.str = NULL}, "this\n"}, {NULL,0,OPT_BOOL,{.unum=0},NULL} }; static struct option long_options[] = { {"magic", required_argument, 0, 'm'}, {"proxy", required_argument, 0, 'p'}, {"listen", required_argument, 0, 'l'}, {"remote-addr", optional_argument, 0, 'r'}, {"remote-port", optional_argument, 0, 'R'}, {"connections", required_argument, 0, 'c'}, {"verbosity", required_argument, 0, 'v'}, {"libpcap", required_argument, 0, 'L'}, {"list-libpcap-devices", no_argument, &opts.list_pcap_devices, 1}, {"logfile", optional_argument, 0, 'o'}, {"statistics", no_argument, 0, 's'}, {"passwd", required_argument, 0, 'P'}, {"udp", no_argument, &opts.udp, 1}, {"unprivileged", no_argument, &opts.unprivileged, 1}, {"window-size", required_argument, 0, 'w'}, {"ack-interval", required_argument, 0, 'a'}, {"resend-interval", required_argument, 0, 't'}, {"payload-size", required_argument, 0, 'y'}, {"empty-pings", required_argument, 0, 'E'}, {"daemon", optional_argument, 0, 'd'}, {"syslog", no_argument, 0, 'S'}, {"user", optional_argument, 0, 'u'}, {"group", optional_argument, 0, 'g'}, {"chroot", optional_argument, 0, 'C'}, {"setcon", optional_argument, 0, 'e'}, {"help", no_argument, 0, 'h'}, {NULL,0,0,0} }; static const void *get_default_optval(enum option_type opttype, const char *optname) { for (unsigned i = 0; i < ARRAY_SIZE(long_options); ++i) { if (strncmp(long_options[i].name, optname, BUFSIZ /* not optimal */) == 0) { assert(usage[i].otype == opttype); return &usage[i].str; } } assert(NULL); return NULL; } static void set_options_defaults(void) { #ifndef WIN32 char *tmp; struct passwd *pwnam; struct group *grnam; #endif memset(&opts, 0, sizeof(opts)); opts.magic = *(uint32_t *) get_default_optval(OPT_HEX32, "magic"); opts.mode = kMode_proxy; opts.tcp_listen_port = *(uint32_t *) get_default_optval(OPT_DEC32, "listen"); opts.given_dst_hostname = strdup(*(char **) get_default_optval(OPT_STR, "remote-addr")); opts.given_dst_port = *(uint32_t *) get_default_optval(OPT_DEC32, "remote-port"); opts.max_tunnels = *(uint32_t *) get_default_optval(OPT_DEC32, "connections"); opts.log_level = *(int *) get_default_optval(OPT_DEC32, "verbosity"); #ifdef HAVE_PCAP opts.pcap_device = strdup(*(char **)get_default_optval(OPT_STR, "libpcap")); #endif opts.log_path = strdup(*(char **)get_default_optval(OPT_STR, "logfile")); opts.log_file = stdout; opts.print_stats = *(int *) get_default_optval(OPT_BOOL, "statistics"); #ifndef WIN32 opts.pid_path = strdup(*(char **)get_default_optval(OPT_STR, "daemon")); errno = 0; tmp = *(char **) get_default_optval(OPT_STR, "user"); if (NULL == (pwnam = getpwnam(tmp))) pt_log(kLog_error, "%s: %s\n", tmp, errno ? strerror(errno) : "unknown user"); else { opts.uid = pwnam->pw_uid; if (!opts.gid) opts.gid = pwnam->pw_gid; } errno = 0; tmp = *(char **) get_default_optval(OPT_STR, "group"); if (NULL != (grnam = getgrnam(tmp))) opts.gid = grnam->gr_gid; opts.root_dir = strdup(*(char **)get_default_optval(OPT_STR, "chroot")); #endif #ifdef HAVE_SELINUX opts.selinux_context = strdup(*(char **)get_default_optval(OPT_STR, "setcon")); #endif } static void print_multiline(const char *prefix, const char *multiline) { const char sep[] = "\n"; const char *start, *end; start = multiline; do { if (start) { end = strstr(start, sep); if (end && *end != '\0') { printf("%s%.*s\n", prefix, (int)(end-start), start); start = end + strnlen(sep, BUFSIZ /* not optimal */); } } } while (start && end); } static void print_long_help(unsigned index, int required_state) { const char spaces[] = " "; if (usage[index].required != required_state) return; if (!long_options[index].name) return; if (isalpha(long_options[index].val)) { printf("%.*s-%c --%s\n", 4, spaces, long_options[index].val, long_options[index].name); } else { printf("%.*s--%s\n", 4, spaces, long_options[index].name); } if (usage[index].long_help) { print_multiline(&spaces[4], usage[index].long_help); } switch (usage[index].otype) { case OPT_BOOL: break; case OPT_DEC32: printf("%s(default: %d)\n", spaces, usage[index].num); break; case OPT_HEX32: printf("%s(default: 0x%X)\n", spaces, usage[index].unum); break; case OPT_STR: if (usage[index].str) printf("%s(default: %s)\n", spaces, usage[index].str); break; } } static void print_short_help(unsigned index, int required_state) { const char *ob = (required_state == 0 ? "[" : ""); const char *cb = (required_state == 0 ? "]" : ""); const char *ov = (long_options[index].has_arg != optional_argument ? " " : ""); if (usage[index].required != required_state) return; if (!long_options[index].name) return; if (!usage[index].short_help && isalpha(long_options[index].val)) { printf(" %s-%c%s", ob, long_options[index].val, cb); } else if (!usage[index].short_help) { printf(" %s--%s%s", ob, long_options[index].name, cb); } else if (isalpha(long_options[index].val)) { printf(" %s-%c%s<%s>%s", ob, long_options[index].val, ov, usage[index].short_help, cb); } else { printf(" %s--%s <%s>%s", ob, long_options[index].name, usage[index].short_help, cb); } } void print_usage(const char *arg0) { unsigned i; printf("%s\n\nUsage: %s", PACKAGE_STRING, arg0); /* print (short)help argument line */ for (i = 0; i < ARRAY_SIZE(usage); ++i) { print_short_help(i, 1); } for (i = 0; i < ARRAY_SIZE(usage); ++i) { print_short_help(i, 0); } printf("%s", "\n\n"); /* print (long)help lines */ for (i = 0; i < ARRAY_SIZE(usage); ++i) { print_long_help(i, 1); } for (i = 0; i < ARRAY_SIZE(usage); ++i) { print_long_help(i, 0); } } int parse_options(int argc, char **argv) { int c = 0, oidx = -1, has_logfile = 0, ret; md5_state_t state; #ifndef WIN32 struct passwd *pwnam; struct group *grnam; #endif FILE *tmp_log; assert( ARRAY_SIZE(long_options) == ARRAY_SIZE(usage) ); /* set defaults */ set_options_defaults(); /* parse command line arguments */ while (1) { /* FIXME: We are using '::' (optional argument values). This is not optimal * since you have to pass long options as '--option=value'. Commonly used * '--option value' is *NOT* allowed for some libc implementations. */ c = getopt_long(argc, argv, "m:p:l:r::R::c:v:L::o::sP:d::Su::g::C::e::w:a:t:y:E:h", &long_options[0], &oidx); if (c == -1) break; switch (c) { case 'm': if (!optarg) break; opts.magic = strtoul(optarg, NULL, 16); break; case 'p': if (!optarg) break; opts.mode = kMode_forward; if (opts.given_proxy_hostname) free(opts.given_proxy_hostname); opts.given_proxy_hostname = strdup(optarg); break; case 'l': if (!optarg) break; opts.tcp_listen_port = strtoul(optarg, NULL, 10); break; case 'r': opts.restrict_dst_ip = 1; if (!optarg) break; if (opts.given_dst_hostname) free(opts.given_dst_hostname); opts.given_dst_hostname = strdup(optarg); break; case 'R': opts.restrict_dst_port = 1; if (optarg) opts.given_dst_port = strtoul(optarg, NULL, 10); break; case 'c': if (!optarg) break; opts.max_tunnels = strtoul(optarg, NULL,10); if (opts.max_tunnels > kMax_tunnels) opts.max_tunnels = kMax_tunnels; break; case 'v': if (!optarg) break; opts.log_level = strtol(optarg, NULL, 10); break; case 'L': #ifdef HAVE_PCAP opts.pcap = 1; if (!optarg) break; if (opts.pcap_device) free(opts.pcap_device); opts.pcap_device = strdup(optarg); break; #else pt_log(kLog_error, "pcap: %s\n", "feature not supported"); exit(1); #endif case 'o': has_logfile = 1; if (!optarg) break; if (opts.log_path) free(opts.log_path); opts.log_path = strdup(optarg); break; case 's': opts.print_stats = !opts.print_stats; break; case 'P': if (!optarg) break; if (opts.password) free(opts.password); opts.password = strdup(optarg); pt_log(kLog_debug, "Password set - unauthenicated connections will be refused.\n"); // Compute the password digest md5_init(&state); md5_append(&state, (md5_byte_t*)optarg, strnlen(opts.password, BUFSIZ /* not optimal */)); md5_finish(&state, &opts.password_digest[0]); // Hide the password in process listing memset(optarg, '*', strnlen(optarg, BUFSIZ /* not optimal */)); break; #ifndef WIN32 case 'd': opts.daemonize = true; if (!optarg) break; if (opts.pid_path) free(opts.pid_path); opts.pid_path = strdup(optarg); break; case 'S': opts.use_syslog = 1; break; case 'u': if (!optarg) break; errno = 0; if (NULL == (pwnam = getpwnam(optarg))) { pt_log(kLog_error, "%s: %s\n", optarg, errno ? strerror(errno) : "unknown user"); exit(1); } opts.uid = pwnam->pw_uid; if (!opts.gid) opts.gid = pwnam->pw_gid; break; case 'g': if (!optarg) break; errno = 0; if (NULL == (grnam = getgrnam(optarg))) { pt_log(kLog_error, "%s: %s\n", optarg, errno ? strerror(errno) : "unknown group"); exit(1); } opts.gid = grnam->gr_gid; break; case 'C': opts.chroot = 1; if (!optarg) break; if (opts.root_dir) free(opts.root_dir); opts.root_dir = strdup(optarg); break; #else case 'd': case 'S': case 'u': case 'g': case 'C': pt_log(kLog_error, "-%c: %s\n", c, "feature not supported"); exit(1); #endif case 'e': #ifdef HAVE_SELINUX opts.selinux = 1; if (!optarg) break; if (opts.selinux_context) free(opts.selinux_context); opts.selinux_context = strdup(optarg); break; #else pt_log(kLog_error, "SeLinux: %s\n", "feature not supported"); exit(1); #endif case 'w': if (!optarg) break; opts.window_size = atoi(optarg); break; case 'a': if (!optarg) break; opts.ack_interval = atoi(optarg); break; case 't': if (!optarg) break; opts.resend_interval = atoi(optarg); break; case 'y': if (!optarg) break; opts.payload_size = atoi(optarg); break; case 'E': if (!optarg) break; opts.empty_pings = atoi(optarg); break; case 'h': print_usage(argv[0]); exit(EXIT_SUCCESS); case 0: /* long opt only */ default: break; } } if (optind != argc) { pt_log(kLog_error, "Unknown argument: '%s'\n", argv[optind]); exit(1); } if (opts.given_proxy_hostname) { if ((ret = host_to_addr(opts.given_proxy_hostname, &opts.given_proxy_ip)) != 0) { pt_log(kLog_error, "Failed to look up %s as destination address: %s\n", opts.given_proxy_hostname, gai_strerror(ret)); return 1; } } if ((ret = host_to_addr(opts.given_dst_hostname, &opts.given_dst_ip)) != 0) { pt_log(kLog_error, "Failed to look up %s as destination address: %s\n", opts.given_dst_hostname, gai_strerror(ret)); return 1; } #ifndef WIN32 if (NULL == (opts.pid_file = fopen(opts.pid_path, "w"))) pt_log(kLog_error, "Failed to open pidfile: \"%s\", Cause: %s\n", opts.pid_path, strerror(errno)); #endif if (has_logfile && opts.log_path) { pt_log(kLog_info, "Open Logfile: \"%s\"\n", opts.log_path); tmp_log = fopen(opts.log_path, "a"); if (!tmp_log) { pt_log(kLog_error, "Failed to open log file: \"%s\", Cause: %s\n", opts.log_path, strerror(errno)); pt_log(kLog_error, "Reverting log to standard out.\n"); } else opts.log_file = tmp_log; } return 0; } ptunnel-ng-1.42/src/options.h000066400000000000000000000075701346103123100161650ustar00rootroot00000000000000/* * options.h * ptunnel is licensed under the BSD license: * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef OPTIONS_H #define OPTIONS_H 1 #include #include #include #ifndef WIN32 #include #include #endif #ifdef HAVE_SELINUX #include #endif #include "md5.h" #include "pconfig.h" struct options { /** user defined magic value (prevent Cisco WSA/IronPort fingerprint scan) */ uint32_t magic; /** proxy or forwarder? */ int mode; /** Proxy's internet address */ char *given_proxy_hostname; uint32_t given_proxy_ip; /** Port the client listens on */ uint32_t tcp_listen_port; /** restrict Forward/Proxy destination internet address */ int restrict_dst_ip; char *given_dst_hostname; uint32_t given_dst_ip; /** restrict Forward/Proxy destination port */ int restrict_dst_port; uint32_t given_dst_port; /** Default maximum number of tunnels to support at once */ uint32_t max_tunnels; /** Default log level */ int log_level; #ifdef HAVE_PCAP /** Non zero value if user wants packet capturing */ int pcap; /** Device to capture packets from */ char *pcap_device; #endif /** List all available pcap devices and exit */ int list_pcap_devices; /** Usually stdout, but can be altered by the user */ char *log_path; FILE *log_file; /** Print more detailed traffic statistics if non zero value */ int print_stats; /** Password (must be the same on proxy and client for authentica tion to succeed) */ char *password; /** MD5 digest of challenge+password */ md5_byte_t password_digest[kMD5_digest_size]; /** use UDP instead of ICMP */ int udp; /** unpriviledged mode */ int unprivileged; uint16_t window_size; uint16_t ack_interval; uint16_t resend_interval; uint16_t payload_size; uint16_t empty_pings; #ifndef WIN32 /** run as daemon if non zero value */ int daemonize; /** PIDFILE if running as daemon */ char *pid_path; FILE *pid_file; /** log to syslog if non zero value */ int use_syslog; /** UID of the running process */ uid_t uid; /** GID of the running process */ gid_t gid; /** CHROOT dir */ int chroot; char *root_dir; #endif #ifdef HAVE_SELINUX /** Non zero value if uer wants SeLinux */ int selinux; /** SeLinux context name */ char *selinux_context; #endif }; extern struct options opts; void print_usage(const char *arg0); int parse_options(int argc, char **argv); #endif ptunnel-ng-1.42/src/pconfig.h000066400000000000000000000127071346103123100161150ustar00rootroot00000000000000/* * pconfig.h * ptunnel is licensed under the BSD license: * * Copyright (c) 2004-2011, Daniel Stoedle , * Yellow Lemon Software. All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #ifndef PCONFIG_H #define PCONFIG_H 1 enum { /** Ping tunnel's operating mode (client) */ kMode_forward = 0, /** Ping tunnel's operating mode (server) */ kMode_proxy, /** Set this constant to the number of * concurrent connections you wish to handle by default. */ kMax_tunnels = 10, /** Different verbosity levels. */ kNo_log = -1, kLog_error = 0, kLog_info, kLog_event, kLog_verbose, kLog_debug, kLog_sendrecv, /** numbers */ kIP_packet_max_size = 576, /** In bytes, mind you */ kIP_header_size = 20, kIP_actual_size = (kIP_packet_max_size - kIP_header_size) - ((kIP_packet_max_size - kIP_header_size) % 8), /** Also in bytes */ kICMP_header_size = 8, /** This constant control the maximum size of * the payload-portion of the ICMP packets * we send. Note that this does not include * the IP or ICMP headers! */ kDefault_buf_size = 0xFFFF, /** Type code for echo request and replies */ kICMP_echo_request = 8, kICMP_echo_reply = 0, /** number of packets we can have in our send/receive ring */ kPing_window_size = 64, /** Tunnels are automatically closed after one minute of inactivity. Since * we continously send acknowledgements between the two peers, this mechanism * won't disconnect "valid" connections. */ kAutomatic_close_timeout = 60, // Seconds! /** size of md5 digest in bytes */ kMD5_digest_size = 16, /** These constants are used to indicate the protocol state. The protocol * works as follows: * - The identifier is used by both the proxy and the forwarder * to identify the session (and thus the relevant sockets). * - The seq-no of the ping packet is used in a sliding-window-esque * way, and to identify the order of data. * * The protocol can be in any of the following states: * kProxy_start Causes the proxy to open a connection to the given * host and port, associating the ID with the socket, * before the data on the socket are transmitted. * kProxy_data Indicates that the packet contains data from the proxy. * Data ordering is indicated by the seq-no, which will start * at 0. (The proxy and forwarder maintain different seq-nos.) * kUser_data This packet contains user data. * kConnection_close Indicates that the connection is being closed. * kProxy_ack and Acknowledges the packet (and all packets before it) with seq_no = ack. * kUser_ack This is used if there are no implicit acknowledgements due to data * being sent. * * Acknowledgements work by the remote peer acknowledging the last * continuous seq no it has received. * * Note: A proxy receiving a kProxy_data packet, or a user receiving a * kUser_data packet, should ignore it, as it is the host operating system * actually returning the ping. This is mostly relevant for users, and for * proxies running in unprivileged mode. */ kProxy_start = 0, kProto_ack, kProto_data, kProto_close, kProto_authenticate, kNum_proto_types, /** set when packet comes from a user */ kUser_flag = 1 << 30, /** set when packet comes from the proxy */ kProxy_flag = 1 << 31, kFlag_mask = kUser_flag | kProxy_flag, kDNS_port = 53 }; #endif ptunnel-ng-1.42/src/pdesc.c000066400000000000000000000250251346103123100155560ustar00rootroot00000000000000/* * pdesc.c * ptunnel is licensed under the BSD license: * * Copyright (c) 2004-2011, Daniel Stoedle , * Yellow Lemon Software. All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #include #include #include "pdesc.h" #include "options.h" #include "utils.h" #include "ptunnel.h" /* create_and_insert_proxy_desc: Creates a new proxy descriptor, linking it into * the descriptor chain. If the sock argument is 0, the function will establish * a TCP connection to the ip and port given by dst_ip, dst_port. */ proxy_desc_t *create_and_insert_proxy_desc(uint16_t id_no, uint16_t icmp_id, int sock, struct sockaddr_in *addr, uint32_t dst_ip, uint32_t dst_port, uint32_t init_state, uint32_t type) { proxy_desc_t *cur; pthread_mutex_lock(&chain_lock); if (num_tunnels >= opts.max_tunnels) { pt_log(kLog_info, "Discarding incoming connection - too many tunnels! Maximum count is %u (adjust with the -m switch).\n", opts.max_tunnels); if (sock) close(sock); pthread_mutex_unlock(&chain_lock); return 0; } num_tunnels++; pthread_mutex_unlock(&chain_lock); pt_log(kLog_debug, "Adding proxy desc to run loop. Type is %s. Will create socket: %s\n", (type == kUser_flag ? "user" : "proxy"), (sock ? "No" : "Yes")); cur = (proxy_desc_t *) calloc(1, sizeof(proxy_desc_t)); cur->id_no = id_no; cur->dest_addr = *addr; cur->dst_ip = dst_ip; cur->dst_port = dst_port; cur->icmp_id = icmp_id; if (!sock) { cur->sock = socket(AF_INET, SOCK_STREAM, 0); memset(addr, 0, sizeof(struct sockaddr_in)); addr->sin_port = htons((uint16_t)dst_port); addr->sin_addr.s_addr = dst_ip; addr->sin_family = AF_INET; /* Let's just assume success, shall we? */ if (cur->sock >= 0 && connect(cur->sock, (struct sockaddr*)addr, sizeof(struct sockaddr_in)) < 0) { pt_log(kLog_error, "Connect to %s:%d failed: %s\n", inet_ntoa(*(struct in_addr*)&addr->sin_addr.s_addr) , ntohs(addr->sin_port), strerror(errno)); } } else cur->sock = sock; cur->state = init_state; cur->type_flag = type; if (cur->type_flag == kUser_flag) cur->pkt_type = kICMP_echo_request; else cur->pkt_type = (opts.unprivileged ? kICMP_echo_request : kICMP_echo_reply); cur->buf = (char *) malloc(icmp_receive_buf_len); cur->last_activity = time_as_double(); cur->authenticated = 0; pthread_mutex_lock(&chain_lock); cur->next = chain; chain = cur; pthread_mutex_unlock(&chain_lock); cur->xfer.bytes_in = 0.0; cur->xfer.bytes_out = 0.0; cur->window_size = opts.window_size ? opts.window_size : 64; cur->ack_interval = opts.ack_interval ? opts.ack_interval / 1000.0 : 1.0; cur->resend_interval = opts.resend_interval ? opts.resend_interval / 1000.0 : 1.5; cur->payload_size = opts.payload_size ? opts.payload_size : 1024; memset(cur->extended_options, 0, sizeof(cur->extended_options)); cur->send_ring = calloc(cur->window_size, sizeof(icmp_desc_t)); cur->recv_ring = calloc(cur->window_size, sizeof(forward_desc_t *)); return cur; } /* remove_proxy_desc: Removes the given proxy desc, freeing its resources. * Assumes that we hold the chain_lock. */ void remove_proxy_desc(proxy_desc_t *cur, proxy_desc_t *prev) { struct timeval tt; pt_log(kLog_debug, "Removing proxy descriptor.\n"); /* Get a timestamp, for making an entry in the seq_expiry_tbl */ gettimeofday(&tt, 0); seq_expiry_tbl[cur->id_no] = tt.tv_sec+(2*kAutomatic_close_timeout); /* Free resources associated with connection */ if (cur->buf) free(cur->buf); cur->buf = 0; remove_proxy_desc_rings(cur); close(cur->sock); cur->sock = 0; /* Keep list up-to-date */ if (prev) prev->next = cur->next; else chain = cur->next; if (cur->challenge) free(cur->challenge); free(cur); num_tunnels--; } void remove_proxy_desc_rings(proxy_desc_t *cur) { int i; for (i=0;iwindow_size;i++) { if (cur->send_ring[i].pkt) free(cur->send_ring[i].pkt); cur->send_ring[i].pkt = 0; if (cur->recv_ring[i]) free(cur->recv_ring[i]); cur->recv_ring[i] = 0; } free(cur->send_ring); free(cur->recv_ring); cur->recv_idx = 0; cur->recv_xfer_idx = 0; cur->send_idx = 0; cur->send_first_ack = 0; cur->recv_wait_send = 0; cur->send_wait_ack = 0; cur->next_resend_start = 0; } forward_desc_t* create_fwd_desc(uint16_t seq_no, uint32_t data_len, char *data) { forward_desc_t *fwd_desc; fwd_desc = (forward_desc_t *) malloc(sizeof(forward_desc_t)+data_len); fwd_desc->seq_no = seq_no; fwd_desc->length = data_len; fwd_desc->remaining = data_len; if (data_len > 0) memcpy(fwd_desc->data, data, data_len); return fwd_desc; } /* queue_packet: * Creates an ICMP packet descriptor, and sends it. The packet descriptor is added * to the given send ring, for potential resends later on. */ int queue_packet(int icmp_sock, uint8_t type, char *buf, int num_bytes, uint16_t id_no, uint16_t icmp_id, uint16_t *seq, icmp_desc_t ring[], int *insert_idx, int *await_send, uint32_t ip, uint32_t port, uint32_t state, struct sockaddr_in *dest_addr, uint16_t next_expected_seq, int *first_ack, uint16_t *ping_seq, uint16_t window_size) { int pkt_len = sizeof(icmp_echo_packet_t) + sizeof(ping_tunnel_pkt_t) + num_bytes; int err = 0; icmp_echo_packet_t *pkt = 0; ping_tunnel_pkt_t *pt_pkt = 0; uint16_t ack_val = next_expected_seq - 1; if (pkt_len % 2) pkt_len++; pkt = (icmp_echo_packet_t *) calloc(1, pkt_len); /* ICMP Echo request or reply */ pkt->type = type; /* Must be zero (non-zero requires root) */ pkt->code = 0; pkt->identifier = htons(icmp_id); pkt->seq = htons(*ping_seq); pkt->checksum = 0; (*ping_seq)++; /* Add our information */ pt_pkt = (ping_tunnel_pkt_t*)pkt->data; pt_pkt->magic = htonl(opts.magic); pt_pkt->dst_ip = ip; pt_pkt->dst_port = htonl(port); pt_pkt->ack = htonl(ack_val); pt_pkt->data_len = htonl(num_bytes); pt_pkt->state = htonl(state); pt_pkt->seq_no = htons(*seq); pt_pkt->id_no = htons(id_no); /* Copy user data */ if (buf && num_bytes > 0) memcpy(pt_pkt->data, buf, num_bytes); pkt->checksum = htons(calc_icmp_checksum((uint16_t*)pkt, pkt_len)); /* Send it! */ pt_log(kLog_sendrecv, "Send: %4d [%4d] bytes " "[id = 0x%04X] [seq = %d] " "[seq_no = %d] [type = %s] " "[ack = %d] [icmp = %d] " "[user = %s]\n", pkt_len, num_bytes, icmp_id, *ping_seq, *seq, state_name[state & (~kFlag_mask)], ack_val, type, ((state & kUser_flag) == kUser_flag ? "yes" : "no")); err = sendto(icmp_sock, (const void*)pkt, pkt_len, 0, (struct sockaddr*)dest_addr, sizeof(struct sockaddr)); if (err < 0) { pt_log(kLog_error, "Failed to send ICMP packet: %s\n", strerror(errno)); free(pkt); return -1; } else if (err != pkt_len) pt_log(kLog_error, "WARNING WARNING, didn't send entire packet\n"); /* Update sequence no's and so on */ ring[*insert_idx].pkt = pkt; ring[*insert_idx].pkt_len = pkt_len; ring[*insert_idx].last_resend = time_as_double(); ring[*insert_idx].seq_no = *seq; ring[*insert_idx].icmp_id = icmp_id; (*seq)++; if (!ring[*first_ack].pkt) *first_ack = *insert_idx; (*await_send)++; (*insert_idx)++; if (*insert_idx >= window_size) *insert_idx = 0; return 0; } /* send_packets: * Examines the passed-in ring, and forwards data in it over TCP. */ uint32_t send_packets(forward_desc_t *ring[], int *xfer_idx, int *await_send, int *sock, uint16_t window_size) { forward_desc_t *fwd_desc; int bytes, total = 0; while (*await_send > 0) { fwd_desc = ring[*xfer_idx]; if (!fwd_desc)/* We haven't got this packet yet.. */ break; if (fwd_desc->length > 0) { bytes = send(*sock, &fwd_desc->data[fwd_desc->length - fwd_desc->remaining], fwd_desc->remaining, 0); if (bytes < 0) { printf("Weirdness.\n"); /* TODO: send close stuff */ close(*sock); *sock = 0; break; } fwd_desc->remaining -= bytes; total += bytes; } if (!fwd_desc->remaining) { ring[*xfer_idx] = 0; free(fwd_desc); (*xfer_idx)++; (*await_send)--; if (*xfer_idx >= window_size) *xfer_idx = 0; } else break; } return total; } ptunnel-ng-1.42/src/pdesc.h000066400000000000000000000153431346103123100155650ustar00rootroot00000000000000/* * pdesc.h * ptunnel is licensed under the BSD license: * * Copyright (c) 2004-2011, Daniel Stoedle , * Yellow Lemon Software. All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #ifndef PDESC_H #define PDESC_H 1 #include #ifndef WIN32 #include #include #include #endif #include "pkt.h" #include "challenge.h" #include "pconfig.h" /** forward_desc_t: Describes a piece of that needs to be forwarded. This * structure is used for receiving data from the network, and for subsequent * forwarding over TCP: * * 1. Client sends data to proxy over ICMP * 2. Proxy receives the data, and puts it into a forward_desc_t * 3. The proxy starts send()-ing the data over the TCP socket to the destination, * decreasing forward_desc_t->remaining with the number of bytes transferred. * 4. Once remaining reaches 0, the forward_desc_t is removed from the receive * ring. * * The same procedure is followed in proxy-to-client communication. Just replace * proxy with client and vice versa in the list above. */ typedef struct forward_desc_t { /** ping_tunnel_pkt_t seq_no */ int seq_no; /** length of data */ int length; /** amount of data not yet transferred */ int remaining; char data[0]; } forward_desc_t; /** icmp_desc_t: This structure is used to track the ICMP packets sent by either * the client or proxy. The last_resend variable is used to prevent resending * the packet too often. Once the packet is acknowledged by the remote end, * it will be removed from the send-ring, freeing up space for more outgoing * ICMP packets. */ typedef struct icmp_desc_t { /** total length of ICMP packet, including ICMP header and ptunnel data. */ int pkt_len; double last_resend; int resend_count; uint16_t seq_no; uint16_t icmp_id; icmp_echo_packet_t *pkt; } icmp_desc_t; /** xfer_stats_t: Various transfer statistics, such as bytes sent and received, * number of ping packets sent/received, etc. */ typedef struct xfer_stats_t { double bytes_in; double bytes_out; uint32_t icmp_in; uint32_t icmp_out; uint32_t icmp_resent; uint32_t icmp_ack_out; } xfer_stats_t; /** proxy_desc_t: This massive structure describes a tunnel instance. */ typedef struct proxy_desc_t { /** ICMP or UDP socket */ int sock; /** number of bytes in receive buffer */ int bytes; /** set to true once this instance should be removed */ int should_remove; /** data buffer, used to receive ping and pong packets */ char *buf; uint16_t id_no; uint16_t my_seq; uint16_t ping_seq; uint16_t next_remote_seq; uint16_t pkt_type; uint16_t remote_ack_val; uint16_t icmp_id; /** first available slot in recv ring */ int recv_idx; /** current slot in recv ring being transferred */ int recv_xfer_idx; /** first available slot in send ring */ int send_idx; /** first packet in send ring not yet acked */ int send_first_ack; /** number of items in recv ring awaiting send */ int recv_wait_send; /** number of items in send ring awaiting ack */ int send_wait_ack; int next_resend_start; int authenticated; /** Contains the challenge, if used. */ challenge_t *challenge; /** Protocol state */ uint32_t state; /** Either kProxy_flag or kUser_flag */ uint32_t type_flag; /** IP and port to which data should be forwarded. */ uint32_t dst_ip; uint32_t dst_port; /** Same as above */ struct sockaddr_in dest_addr; /** Time when last ack packet was sent. */ double last_ack; /** Time when a packet was last received. */ double last_activity; double last_data_activity; uint16_t window_size; double ack_interval; double resend_interval; uint16_t payload_size; uint16_t extended_options[4]; icmp_desc_t *send_ring; forward_desc_t **recv_ring; xfer_stats_t xfer; struct proxy_desc_t *next; } proxy_desc_t; proxy_desc_t* create_and_insert_proxy_desc(uint16_t id_no, uint16_t icmp_id, int sock, struct sockaddr_in *addr, uint32_t dst_ip, uint32_t dst_port, uint32_t init_state, uint32_t type); void remove_proxy_desc(proxy_desc_t *cur, proxy_desc_t *prev); void remove_proxy_desc_rings(proxy_desc_t *cur); forward_desc_t* create_fwd_desc(uint16_t seq_no, uint32_t data_len, char *data); int queue_packet(int icmp_sock, uint8_t type, char *buf, int num_bytes, uint16_t id_no, uint16_t icmp_id, uint16_t *seq, icmp_desc_t ring[], int *insert_idx, int *await_send, uint32_t ip, uint32_t port, uint32_t state, struct sockaddr_in *dest_addr, uint16_t next_expected_seq, int *first_ack, uint16_t *ping_seq, uint16_t window_size); uint32_t send_packets(forward_desc_t *ring[], int *xfer_idx, int *await_send, int *sock, uint16_t window_size); #endif ptunnel-ng-1.42/src/pkt.c000066400000000000000000000474711346103123100152670ustar00rootroot00000000000000/* * pkt.c * ptunnel is licensed under the BSD license: * * Copyright (c) 2004-2011, Daniel Stoedle , * Yellow Lemon Software. All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #ifndef WIN32 #include #include #include #endif #include #include "ptunnel.h" #include "pkt.h" #include "pdesc.h" #include "options.h" #include "utils.h" /* handle_proxy_packet: * Processes incoming ICMP packets for the proxy. The packet can come either from the * packet capture lib, or from the actual socket or both. * Input: A buffer pointing at the start of an IP header, the buffer length and the proxy * descriptor chain. */ void handle_packet(char *buf, unsigned bytes, int is_pcap, struct sockaddr_in *addr, int icmp_sock) { ip_packet_t *ip_pkt; icmp_echo_packet_t *pkt; ping_tunnel_pkt_t *pt_pkt; proxy_desc_t *cur; uint32_t type_flag, pkt_flag, init_state, proxy_flag; challenge_t *challenge; struct timeval tt; struct in_addr in_addr; proxy_flag = kProxy_flag; if (bytes < sizeof(icmp_echo_packet_t)+sizeof(ping_tunnel_pkt_t)) pt_log(kLog_verbose, "Skipping this packet - too short. " "Expect: %d+%d = %d ; Got: %d\n", sizeof(icmp_echo_packet_t), sizeof(ping_tunnel_pkt_t), sizeof(icmp_echo_packet_t) + sizeof(ping_tunnel_pkt_t), bytes); else { if (opts.udp || opts.unprivileged) { ip_pkt = 0; pkt = (icmp_echo_packet_t*)buf; pt_pkt = (ping_tunnel_pkt_t*)pkt->data; } else { ip_pkt = (ip_packet_t*)buf; pkt = (icmp_echo_packet_t*)ip_pkt->data; pt_pkt = (ping_tunnel_pkt_t*)pkt->data; } if (ntohl(pt_pkt->magic) == opts.magic) { pt_pkt->state = ntohl(pt_pkt->state); pkt->identifier = ntohs(pkt->identifier); pkt->seq = ntohs(pkt->seq); pt_pkt->id_no = ntohs(pt_pkt->id_no); pt_pkt->seq_no = ntohs(pt_pkt->seq_no); /* Find the relevant connection, if it exists */ pthread_mutex_lock(&chain_lock); for (cur=chain;cur;cur=cur->next) { if (cur->id_no == pt_pkt->id_no) break; } pthread_mutex_unlock(&chain_lock); /* Handle the packet if it comes from "the other end." This is a bit tricky * to get right, since we receive both our own and the other end's packets. * Basically, a proxy will accept any packet from a user, regardless if it * has a valid connection or not. A user will only accept the packet if there * exists a connection to handle it. */ if (cur) { type_flag = cur->type_flag; if (type_flag == (uint32_t)kProxy_flag) { cur->icmp_id = pkt->identifier; cur->ping_seq = pkt->seq; } if (!is_pcap) cur->xfer.icmp_in++; } else type_flag = kProxy_flag; pkt_flag = pt_pkt->state & kFlag_mask; pt_pkt->state &= ~kFlag_mask; if (pt_pkt->state > (kNum_proto_types-1)) { pt_log(kLog_error, "Dropping packet with invalid state.\n"); return; } pt_log(kLog_sendrecv, "Recv: %4d [%4d] bytes " "[id = 0x%04X] [seq = %d] " "[seq_no = %d] [type = %s] " "[ack = %d] [icmp = %d] " "[user = %s] [pcap = %d]\n", bytes, ntohl(pt_pkt->data_len), pkt->identifier, ntohs(pkt->seq), pt_pkt->seq_no, state_name[pt_pkt->state & (~kFlag_mask)], ntohl(pt_pkt->ack), pkt->type, (pkt_flag == kUser_flag ? "yes" : "no"), is_pcap); /* This test essentially verifies that the packet comes from someone who isn't us. */ if ((pkt_flag == kUser_flag && type_flag == proxy_flag) || (pkt_flag == proxy_flag && type_flag == kUser_flag)) { pt_pkt->data_len = ntohl(pt_pkt->data_len); pt_pkt->ack = ntohl(pt_pkt->ack); if (pt_pkt->state == kProxy_start) { if (!cur && type_flag == proxy_flag) { pt_log(kLog_info, "Incoming tunnel request from %s.\n", inet_ntoa(*(struct in_addr *)&addr->sin_addr)); gettimeofday(&tt, 0); if (tt.tv_sec < seq_expiry_tbl[pt_pkt->id_no]) { pt_log(kLog_verbose, "Dropping request: ID was recently in use.\n"); return; } in_addr.s_addr = pt_pkt->dst_ip; pt_log(kLog_info, "Starting new session to %s:%d with ID %d\n", inet_ntoa(in_addr), ntohl(pt_pkt->dst_port), pt_pkt->id_no); if ((opts.restrict_dst_ip && opts.given_dst_ip && opts.given_dst_ip != pt_pkt->dst_ip) || (opts.restrict_dst_port && (uint32_t)-1 != opts.given_dst_port && opts.given_dst_port != ntohl(pt_pkt->dst_port))) { pt_log(kLog_info, "Destination administratively prohibited!\n"); return; } if (opts.password) init_state = kProto_authenticate; else init_state = kProto_data; cur = (proxy_desc_t *) create_and_insert_proxy_desc(pt_pkt->id_no, pkt->identifier, 0, addr, pt_pkt->dst_ip, ntohl(pt_pkt->dst_port), init_state, kProxy_flag); if (!cur) { /* if failed, abort. Logging is done in create_insert_proxy_desc */ pt_log(kLog_error, "Failed to create proxy descriptor!\n"); return; } if (pt_pkt->data_len > 0) { handle_data(pkt, bytes, 0, 0, 0, 0, cur, 0); if (!opts.password) { handle_extended_options(cur); } } if (init_state == kProto_authenticate) { pt_log(kLog_debug, "Sending authentication challenge..\n"); /* Send challenge */ cur->challenge = generate_challenge(); memcpy(cur->buf, cur->challenge, sizeof(challenge_t)); queue_packet(icmp_sock, cur->pkt_type, cur->buf, sizeof(challenge_t), cur->id_no, cur->icmp_id, &cur->my_seq, cur->send_ring, &cur->send_idx, &cur->send_wait_ack, 0, 0, kProto_authenticate | cur->type_flag, &cur->dest_addr, cur->next_remote_seq, &cur->send_first_ack, &cur->ping_seq, cur->window_size); } } else if (type_flag == kUser_flag) { pt_log(kLog_error, "Dropping proxy session request - we are not a proxy!\n"); return; } else pt_log(kLog_error, "Dropping duplicate proxy session request " "with ID %d and seq %d.\n", pt_pkt->id_no, pt_pkt->seq_no); } else if (cur && pt_pkt->state == kProto_authenticate) { /* Sanity check packet length, and make sure it matches what we expect */ if (pt_pkt->data_len != sizeof(challenge_t)) { pt_log(kLog_error, "Received challenge packet, but data length " "is not as expected.\n"); pt_log(kLog_debug, "Data length: %d Expected: %d\n", pt_pkt->data_len, sizeof (challenge_t)); cur->should_remove = 1; return; } /* Prevent packet data from being forwarded over TCP! */ pt_pkt->data_len = 0; challenge = (challenge_t*)pt_pkt->data; /* If client: Compute response to challenge */ if (type_flag == kUser_flag) { if (!opts.password) { pt_log(kLog_error, "This proxy requires a password! " "Please supply one usin g the -x switch.\n"); send_termination_msg(cur, icmp_sock); cur->should_remove = 1; return; } pt_log(kLog_debug, "Got authentication challenge - sending response\n"); generate_response(challenge); queue_packet(icmp_sock, cur->pkt_type, (char*)challenge, sizeof(challenge_t), cur->id_no, cur->icmp_id, &cur->my_seq, cur->send_ring, &cur->send_idx, &cur->send_wait_ack, 0, 0, kProto_authenticate | cur->type_flag, &cur->dest_addr, cur->next_remote_seq, &cur->send_first_ack, &cur-> ping_seq, cur->window_size); /* We have authenticated locally. * It's up to the proxy now if it accepts our response or not.. */ cur->authenticated = 1; handle_data(pkt, bytes, cur->recv_ring, &cur->recv_wait_send, &cur->recv_idx, &cur->next_remote_seq, 0, cur->window_size); return; } /* If proxy: Handle client's response to challenge */ else if (type_flag == proxy_flag) { pt_log(kLog_debug, "Received remote challenge response.\n"); if (validate_challenge(cur->challenge, challenge) || cur->authenticated) { pt_log(kLog_verbose, "Remote end authenticated successfully.\n"); handle_extended_options(cur); /* Authentication has succeeded, so now we can proceed * to handle incoming TCP data. */ cur->authenticated = 1; cur->state = kProto_data; /* Insert the packet into the receive ring, to avoid * confusing the reliab ility mechanism. */ handle_data(pkt, bytes, cur->recv_ring, &cur->recv_wait_send, &cur->recv_idx, &cur->next_remote_seq, 0, cur->window_size); } else { pt_log(kLog_info, "Remote end failed authentication.\n"); send_termination_msg(cur, icmp_sock); cur->should_remove = 1; } return; } } /* Handle close-messages for connections we know about */ if (cur && pt_pkt->state == kProto_close) { pt_log(kLog_info, "Received session close from remote peer.\n"); cur->should_remove = 1; return; } /* The proxy will ignore any other packets from the client * until it has been authenticated. The packet resend mechanism * insures that this isn't problematic. */ if (type_flag == proxy_flag && opts.password && cur && !cur->authenticated) { pt_log(kLog_debug, "Ignoring packet with seq-no %d " "- not authenticated yet.\n", pt_pkt->seq_no); return; } if (cur && cur->sock) { double now = time_as_double(); if (pt_pkt->state != kProto_ack) { cur->last_data_activity = now; } if (pt_pkt->state == kProto_data || pt_pkt->state == kProxy_start || pt_pkt->state == kProto_ack) { if (pt_pkt->state == kProxy_start) { pt_pkt->data_len = 0; } handle_data(pkt, bytes, cur->recv_ring, &cur->recv_wait_send, &cur->recv_idx, &cur->next_remote_seq, 0, cur->window_size); } handle_ack((uint16_t)pt_pkt->ack, cur->send_ring, &cur->send_wait_ack, 0, cur->send_idx, &cur->send_first_ack, &cur->remote_ack_val, is_pcap, cur->window_size); cur->last_activity = now; } } } else pt_log(kLog_verbose, "Ignored incoming packet.\n"); } } /* handle_data: * Utility function for handling kProto_data packets, and place the data it contains * onto the passed-in receive ring. */ void handle_data(icmp_echo_packet_t *pkt, int total_len, forward_desc_t *ring[], int *await_send, int *insert_idx, uint16_t *next_expected_seq, void *vcur, uint16_t window_size) { ping_tunnel_pkt_t *pt_pkt = (ping_tunnel_pkt_t*)pkt->data; int expected_len = sizeof(ip_packet_t) + sizeof(icmp_echo_packet_t) + sizeof(ping_tunnel_pkt_t); /* 20+8+28 */ /* Place packet in the receive ring, in its proper place. * This works as follows: * -1. Packet == ack packet? Perform ack, and continue. * 0. seq_no < next_remote_seq, and absolute difference is bigger than w size => discard * 1. If seq_no == next_remote_seq, we have no problems; just put it in the ring. * 2. If seq_no > next_remote_seq + remaining window size, discard packet. * Send resend request for missing packets. * 3. Else, put packet in the proper place in the ring * (don't overwrite if one is already there), but don't increment next_remote_seq_no * 4. If packed was not discarded, process ack info in packet. */ expected_len += pt_pkt->data_len; expected_len += expected_len % 2; if (opts.udp || opts.unprivileged) expected_len -= sizeof(ip_packet_t); if (total_len < expected_len) { pt_log(kLog_error, "Packet not completely received: %d Should be: %d. " "For some reason, this error is fatal.\n", total_len, expected_len); pt_log(kLog_debug, "Data length: %d Total length: %d\n", pt_pkt->data_len, total_len); /* TODO: This error isn't fatal, so it should definitely be handled in some way. * We could simply discard it. */ exit(0); } if (vcur) { proxy_desc_t *cur = (proxy_desc_t *)vcur; uint16_t *extended_options = (uint16_t *)pt_pkt->data; if (pt_pkt->data_len >= 2) { cur->extended_options[0] = ntohs(extended_options[0]); } if (pt_pkt->data_len >= 4) { cur->extended_options[1] = ntohs(extended_options[1]); } if (pt_pkt->data_len >= 6) { cur->extended_options[2] = ntohs(extended_options[2]); } if (pt_pkt->data_len >= 8) { cur->extended_options[3] = ntohs(extended_options[3]); } return; } if (!next_expected_seq) return; if (pt_pkt->seq_no == *next_expected_seq) { /* hmm, what happens if this test is true? */ if (!ring[*insert_idx]) { /* && pt_pkt->state == kProto_data */ /* pt_log(kLog_debug, "Queing data packet: %d\n", pt_pkt->seq_no); */ ring[*insert_idx] = create_fwd_desc(pt_pkt->seq_no, pt_pkt->data_len, pt_pkt->data); (*await_send)++; (*insert_idx)++; } else if (ring[*insert_idx]) pt_log(kLog_debug, "Dup packet?\n"); (*next_expected_seq)++; if (*insert_idx >= window_size) *insert_idx = 0; /* Check if we have already received some of the next packets */ while (ring[*insert_idx]) { if (ring[*insert_idx]->seq_no == *next_expected_seq) { (*next_expected_seq)++; (*insert_idx)++; if (*insert_idx >= window_size) *insert_idx = 0; } else break; } } else { int r, s, d, pos; pos = -1; /* If pos ends up staying -1, packet is discarded. */ r = *next_expected_seq; s = pt_pkt->seq_no; d = s - r; if (d < 0) { /* This packet _may_ be old, or seq_no may have wrapped around */ d = (s+0xFFFF) - r; if (window_size && d < window_size) { /* Counter has wrapped, so we should add this packet to the recv ring */ pos = ((*insert_idx)+d) % window_size; } } else if (window_size && d < window_size) pos = ((*insert_idx)+d) % window_size; if (pos != -1) { if (!ring[pos]) { pt_log(kLog_verbose, "Out of order. Expected: %d Got: %d Inserted: %d " "(cur = %d)\n", *next_expected_seq, pt_pkt->seq_no, pos, (*insert_idx)); ring[pos] = create_fwd_desc(pt_pkt->seq_no, pt_pkt->data_len, pt_pkt->data); (*await_send)++; } } /* else * pt_log(kLog_debug, "Packet discarded - outside receive window.\n"); */ } } void handle_extended_options(void *vcur) { proxy_desc_t *cur = (proxy_desc_t *)vcur; if (cur->extended_options[0] > 0) { if (cur->extended_options[0] > cur->window_size) { size_t extend = cur->extended_options[0] - cur->window_size; cur->send_ring = realloc(cur->send_ring, cur->extended_options[0] * sizeof(icmp_desc_t)); cur->recv_ring = realloc(cur->recv_ring, cur->extended_options[0] * sizeof(forward_desc_t *)); memset(cur->send_ring + cur->window_size, 0, extend * sizeof(icmp_desc_t)); memset(cur->recv_ring + cur->window_size, 0, extend * sizeof(forward_desc_t *)); } cur->window_size = cur->extended_options[0]; pt_log(kLog_verbose, "Received extended option for window size %d \n", cur->window_size); } if (cur->extended_options[1] > 0) { cur->ack_interval = cur->extended_options[1] / 1000.0; pt_log(kLog_verbose, "Received extended option for ack interval %f \n", cur->ack_interval); } if (cur->extended_options[2] > 0) { cur->resend_interval = cur->extended_options[2] / 1000.0; pt_log(kLog_verbose, "Received extended option for resend interval %f \n", cur->resend_interval); } if (cur->extended_options[3] > 0) { cur->payload_size = cur->extended_options[3]; pt_log(kLog_verbose, "Received extended option for payload size %d \n", cur->payload_size); } } void handle_ack(uint16_t seq_no, icmp_desc_t ring[], int *packets_awaiting_ack, int one_ack_only, int insert_idx, int *first_ack, uint16_t *remote_ack, int is_pcap, uint16_t window_size) { int i, j, k; ping_tunnel_pkt_t *pt_pkt; if (*packets_awaiting_ack > 0) { if (one_ack_only) { for (i = 0; i < window_size; i++) { if (ring[i].pkt && ring[i].seq_no == seq_no && !is_pcap) { pt_log(kLog_debug, "Received ack for only seq %d\n", seq_no); pt_pkt = (ping_tunnel_pkt_t*)ring[i].pkt->data; /* WARNING: We make the dangerous assumption here that packets arrive in order! */ *remote_ack = (uint16_t)ntohl(pt_pkt->ack); free(ring[i].pkt); ring[i].pkt = 0; ring[i].pkt_len = 0; (*packets_awaiting_ack)--; if (i == *first_ack) { for (j=1;j, * Yellow Lemon Software. All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #ifndef PKT_H #define PKT_H 1 #include #ifndef __MINGW32__ #define __PTATTR__ __attribute__ ((packed)) #else #define __PTATTR__ __attribute__ ((packed, gcc_struct)) #endif #ifdef WIN32 #include typedef int socklen_t; typedef uint32_t in_addr_t; #define ETH_ALEN 6 /* Octets in one ethernet addr */ struct ether_header { uint8_t ether_dhost[ETH_ALEN]; /* destination eth addr */ uint8_t ether_shost[ETH_ALEN]; /* source ether addr */ uint16_t ether_type; /* packet type ID field */ } __PTATTR__; #endif /* WIN32 */ /** Resend packets after this interval (in seconds) */ #define kResend_interval 1.5 /** ping_tunnel_pkt_t: This data structure represents the header of a ptunnel * packet, consisting of a magic number, the tunnel's destination IP and port, * as well as some other fields. Note that the dest IP and port is only valid * in packets from the client to the proxy. */ typedef struct { /** magic number, used to identify ptunnel packets. */ uint32_t magic; /** destination IP and port (used by proxy to figure */ uint32_t dst_ip; /** out where to tunnel to) */ uint32_t dst_port; /** current connection state; see constants above. */ uint32_t state; /** sequence number of last packet received from other end */ uint32_t ack; /** length of data buffer */ uint32_t data_len; /** sequence number of this packet */ uint16_t seq_no; /** id number, used to separate different tunnels from each other */ uint16_t id_no; /** optional data buffer */ char data[0]; } __PTATTR__ ping_tunnel_pkt_t; /** ip_packet_t: This is basically my own definition of the IP packet, which * of course complies with the official definition ;) See any good book on IP * (or even the RFC) for info on the contents of this packet. */ typedef struct { uint8_t vers_ihl; uint8_t tos; uint16_t pkt_len; uint16_t id; uint16_t flags_frag_offset; uint8_t ttl; uint8_t proto; // 1 for ICMP uint16_t checksum; uint32_t src_ip; uint32_t dst_ip; char data[0]; } __PTATTR__ ip_packet_t; /** icmp_echo_packet_t: This is the definition of a standard ICMP header. The * ptunnel packets are constructed as follows: * [ ip header (20 bytes) ] * [ icmp header (8 bytes) ] * [ ptunnel header (28 bytes) ] * * We actually only create the ICMP and ptunnel headers, the IP header is * taken care of by the OS. */ typedef struct { uint8_t type; uint8_t code; uint16_t checksum; uint16_t identifier; uint16_t seq; char data[0]; } __PTATTR__ icmp_echo_packet_t; typedef struct forward_desc_t forward_desc_t; typedef struct icmp_desc_t icmp_desc_t; void handle_packet(char *buf, unsigned bytes, int is_pcap, struct sockaddr_in *addr, int icmp_sock); void handle_data(icmp_echo_packet_t *pkt, int total_len, forward_desc_t **ring, int *await_send, int *insert_idx, uint16_t *next_expected_seq, void *vcur, uint16_t window_size); void handle_extended_options(void *vcur); void handle_ack(uint16_t seq_no, icmp_desc_t *ring, int *packets_awaiting_ack, int one_ack_only, int insert_idx, int *first_ack, uint16_t *remote_ack, int is_pcap, uint16_t window_size); #endif ptunnel-ng-1.42/src/ptunnel-ng.8000066400000000000000000000201511346103123100164670ustar00rootroot00000000000000.TH ptunnel-ng 8 "December 19, 2017" "Version 1.00" .SH NAME ptunnel-ng \- tunnel TCP connections over ICMP echo request/reply packets. .SH SYNOPSIS .na .B ptunnel-ng \-p
\-l \-r
\-R [\-m ] [\-c ] [\-v ] [\-L ] [\-o] [\-s] [\-P ] [\-\-udp] [\-\-unprivileged] [\-d] [\-S] [\-u] [\-g] [\-C] [\-e] [\-h] .SH DESCRIPTION PingTunnel-NG is a fork from the famous PingTunnel with the aim of an improved and refactored code base and some additional features. .PP ptunnel is an application that allows you to reliably tunnel TCP connections to a remote host using ICMP echo request and reply packets, commonly known as ping requests and replies. At first glance, this might seem like a rather useless thing to do, but it can actually come in handy in some cases. The following example illustrates the main motivation in creating ptunnel: .PP Setting: You're on the go, and stumble across an open wireless network. The network gives you an IP address, but won't let you send TCP or UDP packets out to the rest of the internet, for instance to check your mail. What to do? By chance, you discover that the network will allow you to ping any computer on the rest of the internet. With ptunnel, you can utilize this feature to check your mail, or do other things that require TCP. .SH OPTIONS .TP .SH Client options only: .TP .B \-p .PD 0 .TP .BI \-\-proxy= proxy_address .PD Specify the host on which the proxy is running. .TP .B \-l .PD 0 .TP .BI \-\-listen= listen_port .PD Specifies the port on which the client will listen for incoming TCP connections. .TP .B \-s .PD 0 .TP .BI \-\-statistics .PD Enables continuous output of statistics (packet loss, etc.) .TP .SH Server and Client options: .TP .B \-m .PD 0 .TP .BI \-\-magic= magic_value .PD Sets a different magic value which can be used to bypass Cisco's IPS. It may also work for other IDS/IPS/Firewalls. .br .B Remember: This value has to be the same on the server and client! .TP .B \-r .PD 0 .TP .BI \-\-remote\-adr= destination_addr .PD Specifies the address to which you want your packets tunneled after reaching the proxy when in client mode, or restricts the destination packets can be forwarded to when in server mode. .TP .B \-R .PD 0 .TP .BI \-\-remote\-port= destination_port .PD Specifies/restrict the port that the proxy should tunnel the TCP connection to. .TP .B \-c .PD 0 .TP .BI \-\-connections= max_value .PD Set the maximum of concurrent tunnels. .TP .B \-v .PD 0 .TP .BI \-\-verbosity= level .PD Controls the verbosity level. \-1 is no output, 0 shows errors only, 1 shows info messages, 2 gives more output, 3 provides even more output, level 4 displays debug info and level 5 displays absolutely everything, including the nasty details of sends and receives. .TP .B \-L .PD 0 .TP .BI \-\-libpcap= network_device .PD Specify the network interface to capture packets from. Note that packet capturing isn't always necessary, but you should try this if you experience problems with ptunnel. .TP .B \-o .PD 0 .TP .BI \-\-logfile= logfile .PD Specify a file to log to, rather than printing to standard out. .TP .B \-P .PD 0 .TP .BI \-\-passwd= secret_password .PD Set a password (must be same on client and proxy) which will be used for the challenge response authentication. The program will try to hide the password from `/proc/PID/cmdline` but it may not work for ld wrapper or debugging/profiling tools like valgrind. .TP .BI \-\-udp .br .PD Enables tunneling over UDP port 53 (DNS) instead of using ICMP. This will only work if your proxy can accept incoming traffic on port 53, and the client is able to send data to the proxy on port 53. Note that this option does not wrap ptunnel's data in DNS\-compliant packets. This option must be given on both the proxy and client side for things to work correctly. .TP .BI \-\-unprivileged .PD Run proxy in unprivileged mode. This causes the proxy to forward packets using standard echo requests, instead of crafting custom echo replies. Unprivileged mode will only work on some systems, and is in general less reliable than running in privileged mode. .TP .B \-d .PD 0 .TP .BI \-\-daemon= pidfile .PD .B (Not available on Windows.) .br Run in background, writing PID to a pidfile. .TP .B \-S .PD 0 .TP .BI \-\-syslog .PD .B (Not available on Windows.) .br Changes logging to use the built\-in syslog fascility. .TP .B \-u .PD 0 .TP .BI \-\-user= username .PD .B (Not available on Windows.) .br When started in privileged mode (as root), drop down to user's rights as soon as possible. .TP .B \-g .PD 0 .TP .BI \-\-group= groupname .PD .B (Not available on Windows.) .br When started in privileged mode (as root), drop down to group's rights as soon as possible. If you set .B \-\-user it is not required to set this option too. The program will use the group associated with that user. .TP .B \-C .PD 0 .TP .BI \-\-chroot= directory .PD .B (Not available on Windows.) .br When started in privileged mode (as root), restrict file access to the specified directory. .TP .B \-e .PD 0 .TP .BI \-\-setcon= context .PD .B (Only available on Linux.) .br Set SELinux context when all there is left to do are network I/O operations. In order to be able to combine with \-\-chroot you will have to `mount \-\-bind /proc /chrootdir/proc`. .TP .B \-h .PD 0 .TP .BI \-\-help .br Displays brief usage information. .SH EXAMPLES The following assumes that ptunnel is run as root, both on the proxy and client. To tunnel ssh connections from the client machine via a proxy running on proxy.pingtunnel.com to the computer login.domain.com, the following command line would be used: .TP .B ptunnel \-p proxy.pingtunnel.com \-lp 8000 \-da login.domain.com \-dp 22 .PP An ssh connection to login.domain.com can now be established as follows: .TP .B ssh \-p 8000 localhost .PP If ssh complains about potential man\-in\-the\-middle attacks, simply remove the offending key from the known_hosts file. The warning/error is expected if you have previously ssh'd to your local computer (i.e., ssh localhost), or you have used ptunnel to forward ssh connections to different hosts. Of course, for all of this to work, you need to start the proxy on your proxy\-computer (proxy.pingtunnel.com). Doing this is very simple: .B ptunnel If you find that the proxy isn't working, you will need to enable packet capturing on the main network device. Currently this device is assumed to be an ethernet-device (i.e., ethernet or wireless). Packet capturing is enabled by giving the -c switch, and supplying the device name to capture packets on (for instance eth0 or en1). The same goes for the client. On Mac OS X, packet capturing must always be enabled (both for proxy and client), as resent packets won't be received otherwise. To protect yourself from others using your proxy, you can protect access to it with a password using the \-x switch. The password is never sent in the clear, but keep in mind that it may be visible from tools like top or ps, which can display the command line used to start an application. .SH EXIT STATUS .B ptunnel-ng does only exit if an invalid command line option is found or a fatal error during the initialisation process occurred. If this happens the exit value should always be non zero. The program does not exit until forced to do so by an external SIGNAL or if it crashes. .SH BUGS .B ptunnel-ng currently does not handle packet capturing on network interfaces other than ethernet or wireless correctly. .SH AUTHORS AND CONTRIBUTORS PingTunnel-NG: Toni Uhlig (matzeton@googlemail.com) PingTunnel: Daniel Stoedle (daniels@cs.uit.no) Windows port: Mike Miller (mike@mikeage.net) SELinux support: Sebastien Raveau (sebastien.raveau@epita.fr) Patches: Joe McKenzie, Steffen Wendzel and StalkR. .SH LICENSE .B ptunnel-ng is licensed under the BSD License. .SH AVAILABILITY .TP The ptunnel-ng homepage is currently located here: https://github.com/lnslbrty/ptunnel-ng .TP The ptunnel homepage is currently located here: http://www.cs.uit.no/~daniels/PingTunnel/ .TP The freshmeat project page is located here: http://freshmeat.net/projects/ptunnel/ .PP Please take the time to rate ptunnel or ptunnel-ng if you find it useful. Thanks! ptunnel-ng-1.42/src/ptunnel.c000066400000000000000000000744461346103123100161600ustar00rootroot00000000000000/* * ptunnel.c * ptunnel is licensed under the BSD license: * * Copyright (c) 2004-2011, Daniel Stoedle , * Yellow Lemon Software. All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stoedle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "ptunnel.h" #include "options.h" #include "utils.h" #include "md5.h" #ifdef HAVE_SELINUX #include #endif #ifdef WIN32 #include /* Map errno (which Winsock doesn't use) to GetLastError; include the code in the strerror */ #ifdef errno #undef errno #endif /* errno */ #define errno GetLastError() /** Local error string storage */ static char errorstr[255]; static char * print_last_windows_error() { char last_errorstr[255]; DWORD last_error = GetLastError(); memset(last_errorstr, 0, sizeof(last_errorstr)); FormatMessage(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM, NULL, last_error, 0, last_errorstr, sizeof(last_errorstr), NULL); snprintf(errorstr, sizeof(errorstr), "%s (%lu)", last_errorstr, last_error); return errorstr; } #define strerror(x) print_last_windows_error() #endif /* WIN32 */ /* globals */ /** Lock protecting the chain of connections */ pthread_mutex_t chain_lock; /** Lock protecting the num_threads variable */ pthread_mutex_t num_threads_lock; /** Current thread count */ int num_threads = 0; /** Current tunnel count */ uint32_t num_tunnels = 0; /** Table indicating when a connection ID is allowable (used by proxy) */ uint32_t *seq_expiry_tbl = NULL; /* Some buffer constants */ const int icmp_receive_buf_len = kDefault_buf_size + kIP_header_size + kICMP_header_size + sizeof(ping_tunnel_pkt_t); const int pcap_buf_size = (kDefault_buf_size + kIP_header_size + kICMP_header_size + sizeof(ping_tunnel_pkt_t)+64)*64; /** (icmp[icmptype] = icmp-echo || icmp[icmptype] = icmp-echoreply) */ char pcap_filter_program[] = "icmp"; /** The chain of client/proxy connections */ proxy_desc_t *chain = 0; const char *state_name[kNum_proto_types] = { "start", "ack ", "data ", "close", "authenticate" }; #ifdef HAVE_PCAP static void print_pcap_devices(void) { pcap_if_t *devs, *cur_dev; pcap_addr_t *cur_addr; char errbuf[PCAP_ERRBUF_SIZE+1]; if (pcap_findalldevs(&devs, errbuf)) { pt_log(kLog_error, "List all available pcap devices failed: %s.\n", errbuf); } printf("Available pcap devices:\n"); for (cur_dev = devs; cur_dev; cur_dev = cur_dev->next) { if (cur_dev->description) printf("\n\t%s%c '%s'\n", cur_dev->name, (cur_dev->addresses ? ':' : ' '), cur_dev->description); else printf("\n\t%s%c\n", cur_dev->name, (cur_dev->addresses ? ':' : ' ')); for (cur_addr = cur_dev->addresses; cur_addr; cur_addr = cur_addr->next) { if (cur_addr->addr->sa_family == AF_INET) printf("\t\t%s\n", inet_ntoa(((struct sockaddr_in*)cur_addr->addr)->sin_addr)); } } pcap_freealldevs(devs); } #endif /* Let the fun begin! */ int main(int argc, char *argv[]) { #ifndef WIN32 pid_t pid; #endif #ifdef WIN32 WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(2, 2); err = WSAStartup( wVersionRequested, &wsaData ); if ( err != 0 ) { return -1; } if (LOBYTE( wsaData.wVersion ) != 2 || HIBYTE( wsaData.wVersion ) != 2) { WSACleanup(); return -1; } #endif /* WIN32 */ memset(opts.password_digest, 0, kMD5_digest_size); /* The seq_expiry_tbl is used to prevent the remote ends from prematurely * re-using a sequence number. */ seq_expiry_tbl = (uint32_t *) calloc(65536, sizeof(uint32_t)); /* Parse options */ if (parse_options(argc, argv)) return -1; /* Init ptunnel RNG */ pt_random(); if (opts.list_pcap_devices) { #ifdef HAVE_PCAP print_pcap_devices(); return 0; #else pt_log(kLog_error, "Pcap not available!\n"); return 1; #endif } #ifdef HAVE_PCAP if (opts.pcap && opts.udp) { pt_log(kLog_error, "Packet capture is not supported (or needed) when using UDP for transport.\n"); opts.pcap = 0; } #ifdef WIN32 if (!opts.pcap && !opts.udp) { pt_log(kLog_info, "Running ptunnel-ng on Windows in ICMP mode without WinPcap enabled is not supported and may not work!\n"); pt_log(kLog_info, "If you encounter problems, install WinPCAP from:\n"); pt_log(kLog_info, "https://www.winpcap.org/install/default.htm or for WIN10: https://nmap.org/npcap/windows-10.html\n"); pt_log(kLog_info, "After WinPCAP is installed, you can list pcap devices with: --list-pcap-devices\n"); } #endif #endif pt_log(kLog_info, "Starting %s.\n", PACKAGE_STRING); pt_log(kLog_info, "(c) 2004-2011 Daniel Stoedle, \n"); pt_log(kLog_info, "(c) 2017-2019 Toni Uhlig, \n"); #ifdef WIN32 pt_log(kLog_info, "Windows version by Mike Miller, \n"); #else pt_log(kLog_info, "Security features by Sebastien Raveau, \n"); #endif pt_log(kLog_info, "%s.\n", (opts.mode == kMode_forward ? "Relaying packets from incoming TCP streams" : "Forwarding incoming ping packets over TCP")); if (opts.udp) pt_log(kLog_info, "UDP transport enabled.\n"); pt_log(kLog_debug, "Destination at %s:%u\n", opts.given_dst_hostname, opts.given_dst_port); /* TODO: Maybe give the user the opportunity to bind to certain addresses e.g. 127.0.0.1 ? */ if (opts.mode == kMode_forward) pt_log(kLog_debug, "Listen for incoming connections at 0.0.0.0:%u\n", opts.tcp_listen_port); #ifndef WIN32 signal(SIGPIPE, SIG_IGN); if (opts.use_syslog) { if (opts.log_file != stdout) { pt_log(kLog_error, "Logging using syslog overrides the use of a specified logfile (using -f).\n"); fclose(opts.log_file); opts.log_file = stdout; } openlog("ptunnel", LOG_PID, LOG_USER); } if (opts.chroot) { pt_log(kLog_info, "Restricting file access to %s\n", opts.root_dir); if (-1 == chdir(opts.root_dir) || -1 == chroot(".") || -1 == chdir("/")) { pt_log(kLog_error, "chdir/chroot `%s': %s\n", opts.root_dir, strerror(errno)); exit(1); } } if (opts.daemonize) { pt_log(kLog_info, "Going to the background.\n"); if (0 < (pid = fork())) exit(0); if (0 > pid) pt_log(kLog_error, "fork: %s\n", strerror(errno)); else if (-1 == setsid()) pt_log(kLog_error, "setsid: %s\n", strerror(errno)); else { if (0 < (pid = fork())) exit(0); if (0 > pid) pt_log(kLog_error, "fork: %s\n", strerror(errno)); else { if (NULL != opts.pid_file) { fprintf(opts.pid_file, "%d\n", getpid()); fclose(opts.pid_file); } if (! freopen("/dev/null", "r", stdin) || ! freopen("/dev/null", "w", stdout) || ! freopen("/dev/null", "w", stderr)) pt_log(kLog_error, "freopen `%s': %s\n", "/dev/null", strerror(errno)); } } } #endif /* !WIN32 */ pthread_mutex_init(&chain_lock, 0); pthread_mutex_init(&num_threads_lock, 0); // Check mode, validate arguments and start either client or proxy. if (opts.mode == kMode_forward) { if (!opts.given_proxy_ip || !opts.given_dst_ip || !opts.given_dst_port || !opts.tcp_listen_port) { printf("One of the options are missing or invalid.\n"); print_usage(argv[0]); return -1; } pt_forwarder(); } else pt_proxy(0); #ifdef WIN32 WSACleanup(); #else if (opts.root_dir) free(opts.root_dir); #ifdef HAVE_SELINUX if (NULL != opts.selinux_context) free(opts.selinux_context); #endif #endif /* WIN32 */ pt_log(kLog_info, "ptunnel is exiting.\n"); return 0; } /** pt_forwarder: * Sets up a listening TCP socket, and forwards incoming connections * over ping packets. */ void pt_forwarder(void) { int server_sock, new_sock, sock, yes = 1; fd_set set; struct timeval time; struct sockaddr_in addr, dest_addr; socklen_t addr_len; pthread_t pid; uint16_t rand_id; struct in_addr in_addr; pt_log(kLog_debug, "Starting forwarder..\n"); /** Open our listening socket */ sock = socket(AF_INET, SOCK_STREAM, 0); if (sock < 0) { pt_log(kLog_error, "Failed to create socket: %s\n", strerror(errno)); return; } if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (const void *) &yes, sizeof(int)) == -1) { pt_log(kLog_error, "Failed to set SO_REUSEADDR option on listening socket: %s\n", strerror(errno)); close(sock); return; } addr.sin_family = AF_INET; addr.sin_port = htons(opts.tcp_listen_port); addr.sin_addr.s_addr = INADDR_ANY; memset(&(addr.sin_zero), 0, 8); if (bind(sock, (struct sockaddr*)&addr, sizeof(struct sockaddr)) == -1) { pt_log(kLog_error, "Failed to bind listening socket to port %u: %s\n", opts.tcp_listen_port, strerror(errno)); close(sock); return; } server_sock = sock; /* Fill out address structure */ memset(&dest_addr, 0, sizeof(struct sockaddr_in)); dest_addr.sin_family = AF_INET; if (opts.udp) dest_addr.sin_port = htons(kDNS_port /* dns port.. */); else dest_addr.sin_port = 0; in_addr.s_addr = opts.given_proxy_ip; dest_addr.sin_addr.s_addr = opts.given_proxy_ip; pt_log(kLog_verbose, "Proxy IP address: %s\n", inet_ntoa(in_addr)); listen(server_sock, 10); while (1) { FD_ZERO(&set); FD_SET(server_sock, &set); time.tv_sec = 1; time.tv_usec = 0; if (select(server_sock+1, &set, 0, 0, &time) > 0) { pt_log(kLog_info, "Incoming connection.\n"); addr_len = sizeof(struct sockaddr_in); new_sock = accept(server_sock, (struct sockaddr*)&addr, &addr_len); if (new_sock < 0) { pt_log(kLog_error, "Accepting incoming connection failed.\n"); continue; } pthread_mutex_lock(&num_threads_lock); if (num_threads <= 0) { pt_log(kLog_event, "No running proxy thread - starting it.\n"); #ifndef WIN32 if (pthread_create(&pid, 0, pt_proxy, 0) != 0) #else if (0 == (pid = _beginthreadex(0, 0, (unsigned int (__stdcall *)(void *))pt_proxy, 0, 0, 0))) #endif { pt_log(kLog_error, "Couldn't create thread! Dropping incoming connection.\n"); close(new_sock); pthread_mutex_unlock(&num_threads_lock); continue; } } addr = dest_addr; rand_id = (uint16_t) pt_random(); create_and_insert_proxy_desc(rand_id, rand_id, new_sock, &addr, opts.given_dst_ip, opts.given_dst_port, kProxy_start, kUser_flag); pthread_mutex_unlock(&num_threads_lock); } } } int pt_create_udp_socket(int port) { struct sockaddr_in addr; int sock, yes = 1; sock = socket(AF_INET, SOCK_DGRAM, 0); if (sock < 0) { pt_log(kLog_error, "Failed to set create UDP socket..\n"); return 0; } if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (const void*)&yes, sizeof(int)) < 0) { pt_log(kLog_error, "Failed to set UDP REUSEADDR socket option. (Not fatal, hopefully.)\n"); close(sock); return 0; } #ifdef SO_REUSEPORT yes = 1; if (setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, (const void*)&yes, sizeof(int)) < 0) pt_log(kLog_error, "Failed to set UDP REUSEPORT socket option. (Not fatal, hopefully.)\n"); #endif /* SO_REUSEPORT */ memset(&addr, 0, sizeof(struct sockaddr_in)); addr.sin_family = AF_INET; addr.sin_addr.s_addr = htonl(INADDR_ANY); addr.sin_port = htons(port); if (bind(sock, (struct sockaddr*) &addr, sizeof(struct sockaddr_in)) < 0) { pt_log(kLog_error, "Failed to bind UDP socket to port %d (try running as root).\n", port); close(sock); return 0; } return sock; } /* pt_proxy: This function does all the client and proxy stuff. */ void* pt_proxy(void *args) { fd_set set; struct timeval timeout; int bytes; struct sockaddr_in addr; socklen_t addr_len; int fwd_sock = 0, max_sock = 0, idx; char *buf; double now, last_status_update = 0.0; proxy_desc_t *cur, *prev, *tmp; #ifdef HAVE_PCAP pcap_info_t pc; pcap_if_t *alldevs = 0, *pdev; #endif xfer_stats_t xfer; #ifdef HAVE_PCAP ip_packet_t *pkt; uint32_t ip; in_addr_t *adr; #endif struct in_addr in_addr; #ifdef HAVE_ICMPFILTER struct icmp_filter filt; #endif /* Start the thread, initialize protocol and ring states. */ pt_log(kLog_debug, "Starting ping proxy..\n"); if (opts.udp) { pt_log(kLog_debug, "Creating UDP socket..\n"); if (opts.mode == kMode_proxy) fwd_sock = pt_create_udp_socket(kDNS_port); else fwd_sock = pt_create_udp_socket(0); if (!fwd_sock) { pt_log(kLog_error, "Failed to create UDP socket.\n"); return 0; } } else { if (opts.unprivileged) { pt_log(kLog_debug, "Attempting to create unprivileged ICMP datagram socket..\n"); fwd_sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP); } else { pt_log(kLog_debug, "Attempting to create privileged ICMP raw socket..\n"); fwd_sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP); #ifdef HAVE_ICMPFILTER if (opts.mode == kMode_forward) filt.data = ~(1<= 0 && setsockopt(fwd_sock, SOL_RAW, ICMP_FILTER, &filt, sizeof filt) == -1) { pt_log(kLog_error, "setockopt for ICMP_FILTER: %s\n", strerror(errno)); } #endif } if (fwd_sock < 0) { pt_log(kLog_error, "Couldn't create %s socket: %s\n", (opts.unprivileged ? "unprivileged datagram" : "privileged raw"), strerror(errno)); return 0; } } max_sock = fwd_sock+1; #ifdef HAVE_PCAP if (opts.pcap) { if (opts.udp) { pt_log(kLog_error, "Packet capture is not useful with UDP [should not get here!]!\n"); close(fwd_sock); return 0; } if (!opts.unprivileged) { memset(&pc, 0, sizeof(pc)); pt_log(kLog_info, "Initializing pcap.\n"); pc.pcap_err_buf = (char *) malloc(PCAP_ERRBUF_SIZE); pc.pcap_data_buf = (char *) malloc(pcap_buf_size); pc.pcap_desc = pcap_open_live(opts.pcap_device, pcap_buf_size, 0 /* promiscous */, 50 /* ms */, pc.pcap_err_buf); if (pc.pcap_desc) { if (pcap_lookupnet(opts.pcap_device, &pc.netp, &pc.netmask, pc.pcap_err_buf) == -1) { pt_log(kLog_error, "pcap error: %s\n", pc.pcap_err_buf); opts.pcap = 0; } in_addr.s_addr = pc.netp; pt_log(kLog_verbose, "Network: %s\n", inet_ntoa(in_addr)); in_addr.s_addr = pc.netmask; pt_log(kLog_verbose, "Netmask: %s\n", inet_ntoa(in_addr)); if (pcap_compile(pc.pcap_desc, &pc.fp, pcap_filter_program, 0, pc.netp) == -1) { pt_log(kLog_error, "Failed to compile pcap filter program.\n"); pcap_close(pc.pcap_desc); opts.pcap = 0; } else if (pcap_setfilter(pc.pcap_desc, &pc.fp) == -1) { pt_log(kLog_error, "Failed to set pcap filter program.\n"); pcap_close(pc.pcap_desc); opts.pcap = 0; } } else { pt_log(kLog_error, "pcap error: %s\n", pc.pcap_err_buf); opts.pcap = 0; if (pcap_findalldevs(&alldevs, pc.pcap_err_buf) == 0) { idx = 0; pt_log(kLog_error, "Available pcap devices:\n"); for (pdev = alldevs; pdev != NULL; pdev = pdev->next) { pt_log(kLog_error, "[%d] \"%s\": \"%s\"\n", ++idx, pdev->name, (pdev->description ? pdev->description : "UNKNOWN")); } pcap_freealldevs(alldevs); } } pc.pkt_q.head = 0; pc.pkt_q.tail = 0; pc.pkt_q.elems = 0; /* Check if we have succeeded, and free stuff if not */ if (!opts.pcap) { pt_log(kLog_error, "There were errors enabling pcap - pcap has been disabled.\n"); free(pc.pcap_err_buf); free(pc.pcap_data_buf); return 0; } } else pt_log(kLog_info, "pcap disabled since we're running in unprivileged mode.\n"); } #endif pthread_mutex_lock(&num_threads_lock); num_threads++; pthread_mutex_unlock(&num_threads_lock); /* Allocate icmp receive buffer */ buf = (char *) malloc(icmp_receive_buf_len); /* Start forwarding :) */ pt_log(kLog_info, "Ping proxy is listening in %s mode.\n", (opts.unprivileged ? "unprivileged" : "privileged")); #ifndef WIN32 #ifdef HAVE_SELINUX if (opts.uid || opts.gid || opts.selinux_context) #else if (opts.uid || opts.gid) #endif pt_log(kLog_info, "Dropping privileges now.\n"); if (opts.gid && -1 == setgid(opts.gid)) pt_log(kLog_error, "setgid(%d): %s\n", opts.gid, strerror(errno)); if (opts.uid && -1 == setuid(opts.uid)) pt_log(kLog_error, "setuid(%d): %s\n", opts.uid, strerror(errno)); #ifdef HAVE_SELINUX if (opts.selinux) { if (NULL != opts.selinux_context && -1 == setcon(opts.selinux_context)) pt_log(kLog_error, "setcon(%s) failed: %s\n", opts.selinux_context, strerror(errno)); } #endif #endif while (1) { FD_ZERO(&set); FD_SET(fwd_sock, &set); max_sock = fwd_sock+1; pthread_mutex_lock(&chain_lock); for (cur = chain; cur; cur = cur->next) { /* Only handle traffic if there is traffic on the socket, we have * room in our send window AND we either don't use a password, or * have been authenticated. */ if (cur->sock && cur->send_wait_ack < cur->window_size && (!opts.password || cur->authenticated)) { FD_SET(cur->sock, &set); if (cur->sock >= max_sock) max_sock = cur->sock+1; } } pthread_mutex_unlock(&chain_lock); timeout.tv_sec = 0; timeout.tv_usec = 10000; /* Don't care about return val, since we need to check for new states anyway.. */ select(max_sock, &set, 0, 0, &timeout); pthread_mutex_lock(&chain_lock); for (prev = 0, cur = chain; cur && cur->sock; cur = tmp) { /* Client: If we're starting up, send a message to the remote end saying so, * causing him to connect to our desired endpoint. */ if (cur->state == kProxy_start) { pt_log(kLog_verbose, "Sending proxy request.\n"); cur->last_ack = time_as_double(); uint16_t extended_options[4]; size_t extended_options_size = 0; memset(extended_options, 0, sizeof(extended_options)); if (opts.window_size) { extended_options_size = sizeof(uint16_t); extended_options[0] = htons(opts.window_size); } if (opts.ack_interval) { extended_options_size = 2*sizeof(uint16_t); extended_options[1] = htons(opts.ack_interval); } if (opts.resend_interval) { extended_options_size = 3*sizeof(uint16_t); extended_options[2] = htons(opts.resend_interval); } if (opts.payload_size) { extended_options_size = 4*sizeof(uint16_t); extended_options[3] = htons(opts.payload_size); } queue_packet(fwd_sock, cur->pkt_type, (char *)extended_options, extended_options_size, cur->id_no, cur->id_no, &cur->my_seq, cur->send_ring, &cur->send_idx, &cur->send_wait_ack, cur->dst_ip, cur->dst_port, cur->state | cur->type_flag, &cur->dest_addr, cur->next_remote_seq, &cur->send_first_ack, &cur->ping_seq, cur->window_size); cur->xfer.icmp_out++; cur->state = kProto_data; } if (cur->should_remove) { pt_log(kLog_info, "\nSession statistics:\n"); print_statistics(&cur->xfer, 0); pt_log(kLog_info, "\n"); tmp = cur->next; remove_proxy_desc(cur, prev); continue; } /* Handle TCP traffic */ if (FD_ISSET(cur->sock, &set)) { bytes = recv(cur->sock, cur->buf, cur->payload_size, 0); if (bytes <= 0) { pt_log(kLog_info, "Connection closed or lost.\n"); tmp = cur->next; send_termination_msg(cur, fwd_sock); pt_log(kLog_info, "Session statistics:\n"); print_statistics(&cur->xfer, 0); remove_proxy_desc(cur, prev); /* No need to update prev */ continue; } cur->xfer.bytes_out += bytes; cur->xfer.icmp_out++; queue_packet(fwd_sock, cur->pkt_type, cur->buf, bytes, cur->id_no, cur->icmp_id, &cur->my_seq, cur->send_ring, &cur->send_idx, &cur->send_wait_ack, 0, 0, cur->state | cur->type_flag, &cur->dest_addr, cur->next_remote_seq, &cur->send_first_ack, &cur->ping_seq, cur->window_size); } prev = cur; tmp = cur->next; } pthread_mutex_unlock(&chain_lock); if (FD_ISSET(fwd_sock, &set)) { /* Handle ping traffic */ addr_len = sizeof(struct sockaddr); bytes = recvfrom(fwd_sock, buf, icmp_receive_buf_len, 0, (struct sockaddr*)&addr, &addr_len); if (bytes < 0) { pt_log(kLog_error, "Error receiving packet on ICMP socket: %s\n", strerror(errno)); break; } handle_packet(buf, bytes, 0, &addr, fwd_sock); } /* Check for packets needing resend, and figure out if any connections * should be closed down due to inactivity. */ pthread_mutex_lock(&chain_lock); now = time_as_double(); for (cur = chain; cur; cur = cur->next) { in_addr.s_addr = cur->dst_ip; if (cur->last_activity + kAutomatic_close_timeout < now) { pt_log(kLog_info, "Dropping tunnel to %s:%d due to inactivity.\n", inet_ntoa(in_addr), cur->dst_port, cur->id_no); cur->should_remove = 1; continue; } if (cur->recv_wait_send && cur->sock) cur->xfer.bytes_in += send_packets(cur->recv_ring, &cur->recv_xfer_idx, &cur->recv_wait_send, &cur->sock, cur->window_size); /* Check for any icmp packets requiring resend, and resend _only_ the first packet. */ idx = cur->send_first_ack; if (cur->send_ring[idx].pkt && cur->send_ring[idx].last_resend+cur->resend_interval < now) { pt_log(kLog_debug, "Resending packet with seq-no %d.\n", cur->send_ring[idx].seq_no); cur->send_ring[idx].last_resend = now; cur->send_ring[idx].pkt->identifier = htons(cur->icmp_id); cur->send_ring[idx].pkt->seq = htons(cur->ping_seq); cur->ping_seq++; cur->send_ring[idx].pkt->checksum = 0; cur->send_ring[idx].pkt->checksum = htons(calc_icmp_checksum((uint16_t*)cur->send_ring[idx].pkt, cur->send_ring[idx].pkt_len)); /* printf("ID: %d\n", htons(cur->send_ring[idx].pkt->identifier)); */ sendto(fwd_sock, (const void*)cur->send_ring[idx].pkt, cur->send_ring[idx].pkt_len, 0, (struct sockaddr*)&cur->dest_addr, sizeof(struct sockaddr)); cur->xfer.icmp_resent++; } /* Figure out if it's time to send an explicit acknowledgement */ if (cur->last_ack+cur->ack_interval < now && cur->send_wait_ack < cur->window_size && cur->remote_ack_val+1 != cur->next_remote_seq) { idx = cur->send_idx; queue_packet(fwd_sock, cur->pkt_type, 0, 0, cur->id_no, cur->icmp_id, &cur->my_seq, cur->send_ring, &cur->send_idx, &cur->send_wait_ack, cur->dst_ip, cur->dst_port, kProto_ack | cur->type_flag, &cur->dest_addr, cur->next_remote_seq, &cur->send_first_ack, &cur->ping_seq, cur->window_size); cur->xfer.icmp_ack_out++; if (opts.empty_pings && cur->last_data_activity > cur->last_ack && cur->send_ring[idx].pkt_len > sizeof(icmp_echo_packet_t) && cur->send_ring[idx].pkt->type == kICMP_echo_request) { for (uint16_t e = 0; e < opts.empty_pings; e++) { cur->send_ring[idx].pkt->seq = htons(cur->ping_seq); cur->ping_seq++; cur->send_ring[idx].pkt->checksum = 0; cur->send_ring[idx].pkt->checksum = htons(calc_icmp_checksum((uint16_t*)cur->send_ring[idx].pkt, sizeof(icmp_echo_packet_t))); sendto(fwd_sock, (const void*)cur->send_ring[idx].pkt, sizeof(icmp_echo_packet_t), 0, (struct sockaddr*)&cur->dest_addr, sizeof(struct sockaddr)); } } cur->last_ack = now; } } pthread_mutex_unlock(&chain_lock); #ifdef HAVE_PCAP if (opts.pcap) { if (pcap_dispatch(pc.pcap_desc, 32, pcap_packet_handler, (u_char*)&pc.pkt_q) > 0) { pqueue_elem_t *cur; pt_log(kLog_verbose, "pcap captured %d packets - handling them..\n", pc.pkt_q.elems); while (pc.pkt_q.head) { cur = pc.pkt_q.head; memset(&addr, 0, sizeof(struct sockaddr)); addr.sin_family = AF_INET; pkt = (ip_packet_t*)&cur->data[0]; ip = pkt->src_ip; adr = (in_addr_t*)&ip; addr.sin_addr.s_addr = *adr; handle_packet(cur->data, cur->bytes, 1, &addr, fwd_sock); pc.pkt_q.head = cur->next; free(cur); pc.pkt_q.elems--; } pc.pkt_q.tail = 0; pc.pkt_q.head = 0; } } #endif /* Update running statistics, if requested (only once every second) */ if (opts.print_stats && opts.mode == kMode_forward && now > last_status_update+1) { pthread_mutex_lock(&chain_lock); memset(&xfer, 0, sizeof(xfer_stats_t)); for (cur = chain; cur; cur = cur->next) { xfer.bytes_in += cur->xfer.bytes_in; xfer.bytes_out += cur->xfer.bytes_out; xfer.icmp_in += cur->xfer.icmp_in; xfer.icmp_out += cur->xfer.icmp_out; xfer.icmp_resent += cur->xfer.icmp_resent; } pthread_mutex_unlock(&chain_lock); print_statistics(&xfer, (opts.log_level >= kLog_verbose ? 0 : 1)); last_status_update = now; } } pt_log(kLog_debug, "Proxy exiting..\n"); if (fwd_sock) close(fwd_sock); /* TODO: Clean up the other descs. Not really a priority since there's no * real way to quit ptunnel in the first place.. */ free(buf); pt_log(kLog_debug, "Ping proxy done\n"); return 0; } /* print_statistics: Prints transfer statistics for the given xfer block. The * is_continuous variable controls the output mode, either printing a new line * or overwriting the old line. */ void print_statistics(xfer_stats_t *xfer, int is_continuous) { const double mb = 1024.0*1024.0; double loss = 0.0; if (xfer->icmp_out > 0) loss = (double)xfer->icmp_resent/(double)xfer->icmp_out; if (is_continuous) printf("\r"); printf("[inf]: I/O: %6.2f/%6.2f mb ICMP I/O/R: %8u/%8u/%8u Loss: %4.1f%%", xfer->bytes_in/mb, xfer->bytes_out/mb, xfer->icmp_in, xfer->icmp_out, xfer->icmp_resent, loss); if (!is_continuous) printf("\n"); else fflush(stdout); } #ifdef HAVE_PCAP /* pcap_packet_handler: * This is our callback function handling captured packets. We already know that the packets * are ICMP echo or echo-reply messages, so all we need to do is strip off the ethernet header * and append it to the queue descriptor (the refcon argument). * * Ok, the above isn't entirely correct (we can get other ICMP types as well). This function * also has problems when it captures packets on the loopback interface. The moral of the * story: Don't do ping forwarding over the loopback interface. * * Also, we currently don't support anything else than ethernet when in pcap mode. The reason * is that I haven't read up on yet on how to remove the frame header from the packet.. */ void pcap_packet_handler(u_char *refcon, const struct pcap_pkthdr *hdr, const u_char* pkt) { pqueue_t *q; pqueue_elem_t *elem; ip_packet_t *ip; /* pt_log(kLog_verbose, "Packet handler: %d =? %d\n", hdr->caplen, hdr->len); */ q = (pqueue_t*)refcon; elem = (pqueue_elem_t *) malloc(sizeof(pqueue_elem_t)+hdr->caplen-sizeof(struct ether_header)); memcpy(elem->data, pkt+sizeof(struct ether_header), hdr->caplen-sizeof(struct ether_header)); ip = (ip_packet_t*)elem->data; /* TODO: Add fragment support */ elem->bytes = ntohs(ip->pkt_len); if (elem->bytes > hdr->caplen-sizeof(struct ether_header)) { pt_log(kLog_error, "Received fragmented packet - unable to reconstruct!\n"); pt_log(kLog_error, "This error usually occurs because pcap is used on " "devices that are not wlan or ethernet.\n"); free(elem); return; } /* elem->bytes = hdr->caplen-sizeof(struct ether_header); */ elem->next = 0; if (q->tail) { q->tail->next = elem; q->tail = elem; } else { q->head = elem; q->tail = elem; } q->elems++; } #endif uint16_t calc_icmp_checksum(uint16_t *data, int bytes) { uint32_t sum; int i; sum = 0; for (i = 0; i < bytes / 2; i++) { /* WARNING; this might be a bug, but might explain why I occasionally * see buggy checksums.. (added htons, that might be the correct behaviour) */ sum += data[i]; } sum = (sum & 0xFFFF) + (sum >> 16); sum = htons(0xFFFF - sum); return sum; } /* send_termination_msg: Sends two packets to the remote end, informing it that * the tunnel is being closed down. */ void send_termination_msg(proxy_desc_t *cur, int icmp_sock) { /* Send packet twice, hoping at least one of them makes it through.. */ queue_packet(icmp_sock, cur->pkt_type, 0, 0, cur->id_no, cur->icmp_id, &cur->my_seq, cur->send_ring, &cur->send_idx, &cur->send_wait_ack, 0, 0, kProto_close | cur->type_flag, &cur->dest_addr, cur->next_remote_seq, &cur->send_first_ack, &cur->ping_seq, cur->window_size); queue_packet(icmp_sock, cur->pkt_type, 0, 0, cur->id_no, cur->icmp_id, &cur->my_seq, cur->send_ring, &cur->send_idx, &cur->send_wait_ack, 0, 0, kProto_close | cur->type_flag, &cur->dest_addr, cur->next_remote_seq, &cur->send_first_ack, &cur->ping_seq, cur->window_size); cur->xfer.icmp_out += 2; } ptunnel-ng-1.42/src/ptunnel.h000066400000000000000000000116411346103123100161510ustar00rootroot00000000000000/* * ptunnel.h * ptunnel is licensed under the BSD license: * * Copyright (c) 2004-2011, Daniel Stoedle , * Yellow Lemon Software. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stoedle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #ifndef PING_TUNNEL_H #define PING_TUNNEL_H 1 #ifndef WIN32 #ifdef HAVE_ICMPFILTER #include #endif #ifdef HAVE_SYS_UNISTD_H #include #endif #include #include #include #include #include #include #include #include #include #include #include #endif /* !WIN32 */ #include #include #include #include #include #include #include #include #include #ifdef HAVE_PCAP #include #endif #include "pkt.h" #include "pdesc.h" #include "challenge.h" #ifdef WIN32 /* pthread porting to windows */ typedef CRITICAL_SECTION pthread_mutex_t; typedef unsigned long pthread_t; #define pthread_mutex_init InitializeCriticalSectionAndSpinCount #define pthread_mutex_lock EnterCriticalSection #define pthread_mutex_unlock LeaveCriticalSection #endif extern pthread_mutex_t chain_lock; extern uint32_t num_tunnels; extern const int icmp_receive_buf_len; extern proxy_desc_t *chain; extern uint32_t *seq_expiry_tbl; extern const char *state_name[kNum_proto_types]; /* pt_thread_info_t: A simple (very simple, in fact) structure that allows us * to pass an arbitrary number of params to the threads we create. Currently, * that's just one single parameter: The socket which the thread should listen * to. */ typedef struct { int sock; } pt_thread_info_t; /* pqueue_elem_t: An queue element in the pqueue structure (below). */ typedef struct pqueue_elem_t { /** size of data buffer */ unsigned long bytes; /** next queue element (if any) */ struct pqueue_elem_t *next; /** optional data */ char data[0]; } pqueue_elem_t; /* pqueue_t: A simple queue strucutre. */ typedef struct { pqueue_elem_t *head; pqueue_elem_t *tail; int elems; } pqueue_t; #ifdef HAVE_PCAP /* pcap_info_t: Structure to hold information related to packet capturing. */ typedef struct { pcap_t *pcap_desc; /** compiled filter program */ struct bpf_program fp; uint32_t netp; uint32_t netmask; /** buffers for error info */ char *pcap_err_buf; /** buffers for packet info */ char *pcap_data_buf; /** queue of packets to process */ pqueue_t pkt_q; } pcap_info_t; #endif /* function Prototypes */ void* pt_proxy(void *args); #ifdef HAVE_PCAP void pcap_packet_handler(u_char *refcon, const struct pcap_pkthdr *hdr, const u_char* pkt); #endif void pt_forwarder(void); void print_statistics(xfer_stats_t *xfer, int is_continuous); void init_ip_packet(ip_packet_t *packet, uint16_t id, uint16_t frag_offset, uint16_t pkt_len, uint8_t ttl, uint32_t src_ip, uint32_t dst_ip, bool is_last_frag, bool dont_frag); uint16_t calc_icmp_checksum(uint16_t *data, int bytes); void send_termination_msg(proxy_desc_t *cur, int icmp_sock); #endif ptunnel-ng-1.42/src/utils.c000066400000000000000000000124311346103123100156150ustar00rootroot00000000000000/* * utils.c * ptunnel is licensed under the BSD license: * * Copyright (c) 2004-2011, Daniel Stoedle , * Yellow Lemon Software. All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include #ifdef HAVE_BSD_STDLIB_H #include #endif #ifndef WIN32 #include #include #include #include #include #include #include #else #include #endif #include #include "utils.h" #include "options.h" void pt_log(int level, const char *fmt, ...) { va_list args; const char *header[] = { "[err]: ", "[inf]: ", "[evt]: ", "[vbs]: ", "[dbg]: ", "[xfr]: " }; #ifndef WIN32 int syslog_levels[] = {LOG_ERR, LOG_NOTICE, LOG_NOTICE, LOG_INFO, LOG_DEBUG, LOG_DEBUG}; #endif /* !WIN32 */ if (level <= opts.log_level) { va_start(args, fmt); #ifndef WIN32 if (opts.use_syslog) { char log[255]; int header_len; header_len = snprintf(log,sizeof(log),"%s",header[level]); vsnprintf(log+header_len,sizeof(log)-header_len,fmt,args); syslog(syslog_levels[level], "%s", log); } else #endif /* !WIN32 */ fprintf(opts.log_file, "%s", header[level]), vfprintf(opts.log_file, fmt, args); va_end(args); #ifndef WIN32 if (opts.log_file != stdout && !opts.use_syslog) #else if (opts.log_file != stdout) #endif fflush(opts.log_file); } } double time_as_double(void) { double result; struct timeval tt; gettimeofday(&tt, 0); result = (double)tt.tv_sec + ((double)tt.tv_usec / (double)10e5); return result; } int host_to_addr(const char *hostname, uint32_t *result) { int ret; struct addrinfo *addrs = NULL; struct addrinfo hints; struct sockaddr_in *addr; memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_INET; if ((ret = getaddrinfo(hostname, NULL, &hints, &addrs)) != 0) return ret; addr = (struct sockaddr_in *) addrs->ai_addr; *result = *(uint32_t *) &addr->sin_addr; freeaddrinfo(addrs); return 0; } #if 0 static const char hextab[] = "0123456789ABCDEF"; void print_hexstr(unsigned char *buf, size_t siz) { char *out = (char *) calloc(3, siz+1); unsigned char high, low; for (size_t i = 0; i < siz; ++i) { high = (buf[i] & 0xF0) >> 4; low = buf[i] & 0x0F; out[i ] = hextab[high]; out[i+1] = hextab[low]; out[i+2] = ' '; } printf("%s\n", out); free(out); } #endif int pt_random(void) { #ifdef HAVE_ARC4RANDOM return arc4random(); #else #if defined(USE_CUSTOMRNG) && !defined(_WIN32) static int rng_fd = -1; ssize_t bytes_read; int rnd_val; if (rng_fd < 0) { rng_fd = open(RNGDEV, O_RDONLY); if (rng_fd < 0) { pt_log(kLog_error, "FATAL: Could not open random device '%s': %s\n", RNGDEV, strerror(errno)); exit(EXIT_FAILURE); } } bytes_read = read(rng_fd, &rnd_val, sizeof rnd_val); if (bytes_read != sizeof rnd_val) { if (bytes_read < 0) pt_log(kLog_error, "FATAL: Read from random device failed: %s\n", strerror(errno)); else pt_log(kLog_error, "FATAL: Read only %zd bytes (wanted %zd bytes)\n", bytes_read, sizeof rnd_val); exit(EXIT_FAILURE); } return rnd_val; #else srand(time(0)); return rand(); #endif #endif } ptunnel-ng-1.42/src/utils.h000066400000000000000000000046101346103123100156220ustar00rootroot00000000000000/* * utils.h * ptunnel is licensed under the BSD license: * * Copyright (c) 2004-2011, Daniel Stoedle , * Yellow Lemon Software. All rights reserved. * * Copyright (c) 2017-2019, Toni Uhlig * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * - Neither the name of the Yellow Lemon Software nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Contacting the author: * You can get in touch with me, Daniel Stødle (that's the Norwegian letter oe, * in case your text editor didn't realize), here: * * The official ptunnel website is here: * * * Note that the source code is best viewed with tabs set to 4 spaces. */ #ifndef UTILS_H #define UTILS_H 1 #include #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) void pt_log(int level, const char *fmt, ...); double time_as_double(void); int host_to_addr(const char *hostname, uint32_t *result); #if 0 void print_hexstr(unsigned char *buf, size_t siz); #endif int pt_random(void); #endif ptunnel-ng-1.42/src/win32/000077500000000000000000000000001346103123100152525ustar00rootroot00000000000000ptunnel-ng-1.42/src/win32/WPCAP.DEF000066400000000000000000000032041346103123100164430ustar00rootroot00000000000000LIBRARY wpcap.dll EXPORTS pcap_lookupdev pcap_lookupnet pcap_open_live pcap_open_offline pcap_close pcap_getnonblock pcap_setnonblock pcap_loop pcap_dispatch pcap_read pcap_setuserbuffer pcap_offline_read pcap_next pcap_stats pcap_stats_ex pcap_setfilter pcap_perror pcap_strerror pcap_geterr pcap_compile pcap_compile_nopcap pcap_freecode pcap_datalink pcap_snapshot pcap_is_swapped pcap_major_version pcap_minor_version pcap_file pcap_fileno pcap_dump_open pcap_dump_close pcap_dump_flush pcap_dump pcap_dump_file pcap_setbuff pcap_setmode pcap_sendpacket pcap_sendqueue_alloc pcap_sendqueue_destroy pcap_sendqueue_queue pcap_sendqueue_transmit pcap_next_etherent pcap_getevent pcap_setmintocopy pcap_open_dead pcap_findalldevs pcap_freealldevs pcap_live_dump pcap_live_dump_ended bpf_filter bpf_validate bpf_image bpf_dump wsockinit endservent getservent eproto_db pcap_stats_ex pcap_open pcap_createsrcstr pcap_parsesrcstr pcap_findalldevs_ex pcap_remoteact_accept pcap_remoteact_list pcap_remoteact_close pcap_remoteact_cleanup install_bpf_program pcap_next_ex pcap_offline_filter pcap_setsampling pcap_breakloop pcap_list_datalinks pcap_list_datalinks pcap_set_datalink pcap_datalink_name_to_val pcap_datalink_val_to_name pcap_datalink_val_to_description pcap_lib_version pcap_dump_file pcap_dump_ftell pcap_get_airpcap_handle pcap_create pcap_activate pcap_set_promisc pcap_set_snaplen pcap_set_timeout pcap_set_buffer_size pcap_hopen_offline pcap_setdirection pcap_free_datalinksptunnel-ng-1.42/src/win32/includes/000077500000000000000000000000001346103123100170605ustar00rootroot00000000000000ptunnel-ng-1.42/src/win32/includes/bittypes.h000066400000000000000000000075301346103123100211010ustar00rootroot00000000000000/* * Copyright (C) 1999 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _BITTYPES_H #define _BITTYPES_H #ifndef HAVE_U_INT8_T #if SIZEOF_CHAR == 1 typedef unsigned char u_int8_t; typedef signed char int8_t; #elif SIZEOF_INT == 1 typedef unsigned int u_int8_t; typedef signed int int8_t; #else /* XXX */ #error "there's no appropriate type for u_int8_t" #endif #define HAVE_U_INT8_T 1 #define HAVE_INT8_T 1 #endif /* HAVE_U_INT8_T */ #ifndef HAVE_U_INT16_T #if SIZEOF_SHORT == 2 typedef unsigned short u_int16_t; typedef signed short int16_t; #elif SIZEOF_INT == 2 typedef unsigned int u_int16_t; typedef signed int int16_t; #elif SIZEOF_CHAR == 2 typedef unsigned char u_int16_t; typedef signed char int16_t; #else /* XXX */ #error "there's no appropriate type for u_int16_t" #endif #define HAVE_U_INT16_T 1 #define HAVE_INT16_T 1 #endif /* HAVE_U_INT16_T */ #ifndef HAVE_U_INT32_T #if SIZEOF_INT == 4 typedef unsigned int u_int32_t; typedef signed int int32_t; #elif SIZEOF_LONG == 4 typedef unsigned long u_int32_t; typedef signed long int32_t; #elif SIZEOF_SHORT == 4 typedef unsigned short u_int32_t; typedef signed short int32_t; #else /* XXX */ #error "there's no appropriate type for u_int32_t" #endif #define HAVE_U_INT32_T 1 #define HAVE_INT32_T 1 #endif /* HAVE_U_INT32_T */ #ifndef HAVE_U_INT64_T #if SIZEOF_LONG_LONG == 8 typedef unsigned long long u_int64_t; typedef long long int64_t; #elif defined(_MSC_EXTENSIONS) typedef unsigned _int64 u_int64_t; typedef _int64 int64_t; #elif SIZEOF_INT == 8 typedef unsigned int u_int64_t; #elif SIZEOF_LONG == 8 typedef unsigned long u_int64_t; #elif SIZEOF_SHORT == 8 typedef unsigned short u_int64_t; #else /* XXX */ #error "there's no appropriate type for u_int64_t" #endif #endif /* HAVE_U_INT64_T */ #ifndef PRId64 #ifdef _MSC_EXTENSIONS #define PRId64 "I64d" #else /* _MSC_EXTENSIONS */ #define PRId64 "lld" #endif /* _MSC_EXTENSIONS */ #endif /* PRId64 */ #ifndef PRIo64 #ifdef _MSC_EXTENSIONS #define PRIo64 "I64o" #else /* _MSC_EXTENSIONS */ #define PRIo64 "llo" #endif /* _MSC_EXTENSIONS */ #endif /* PRIo64 */ #ifndef PRIx64 #ifdef _MSC_EXTENSIONS #define PRIx64 "I64x" #else /* _MSC_EXTENSIONS */ #define PRIx64 "llx" #endif /* _MSC_EXTENSIONS */ #endif /* PRIx64 */ #ifndef PRIu64 #ifdef _MSC_EXTENSIONS #define PRIu64 "I64u" #else /* _MSC_EXTENSIONS */ #define PRIu64 "llu" #endif /* _MSC_EXTENSIONS */ #endif /* PRIu64 */ #endif /* _BITTYPES_H */ ptunnel-ng-1.42/src/win32/includes/pcap-stdinc.h000066400000000000000000000054711346103123100214450ustar00rootroot00000000000000/* * Copyright (c) 2002 - 2005 NetGroup, Politecnico di Torino (Italy) * Copyright (c) 2005 - 2009 CACE Technologies, Inc. Davis (California) * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the Politecnico di Torino nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * @(#) $Header: /tcpdump/master/libpcap/pcap-stdinc.h,v 1.10.2.1 2008-10-06 15:38:39 gianluca Exp $ (LBL) */ #define SIZEOF_CHAR 1 #define SIZEOF_SHORT 2 #define SIZEOF_INT 4 #ifndef _MSC_EXTENSIONS #define SIZEOF_LONG_LONG 8 #endif /* * Avoids a compiler warning in case this was already defined * (someone defined _WINSOCKAPI_ when including 'windows.h', in order * to prevent it from including 'winsock.h') */ #ifdef _WINSOCKAPI_ #undef _WINSOCKAPI_ #endif #include #include #include "bittypes.h" #include #include #ifndef __MINGW32__ #include "IP6_misc.h" #endif #define caddr_t char* #if _MSC_VER < 1500 #define snprintf _snprintf #define vsnprintf _vsnprintf #define strdup _strdup #endif #define inline __inline #ifdef __MINGW32__ #include #else /*__MINGW32__*/ /* MSVC compiler */ #ifndef _UINTPTR_T_DEFINED #ifdef _WIN64 typedef unsigned __int64 uintptr_t; #else typedef _W64 unsigned int uintptr_t; #endif #define _UINTPTR_T_DEFINED #endif #ifndef _INTPTR_T_DEFINED #ifdef _WIN64 typedef __int64 intptr_t; #else typedef _W64 int intptr_t; #endif #define _INTPTR_T_DEFINED #endif #endif /*__MINGW32__*/ ptunnel-ng-1.42/src/win32/includes/pcap.h000066400000000000000000000044201346103123100201540ustar00rootroot00000000000000/* * Copyright (c) 1993, 1994, 1995, 1996, 1997 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the Computer Systems * Engineering Group at Lawrence Berkeley Laboratory. * 4. Neither the name of the University nor of the Laboratory may be used * to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#) $Header: /tcpdump/master/libpcap/pcap.h,v 1.59 2006/10/04 18:09:22 guy Exp $ (LBL) */ /* * For backwards compatibility. * * Note to OS vendors: do NOT get rid of this file! Many applications * expect to be able to include , and at least some of them * go through contortions in their configure scripts to try to detect * OSes that have "helpfully" moved pcap.h to without * leaving behind a file. */ #include ptunnel-ng-1.42/src/win32/includes/pcap/000077500000000000000000000000001346103123100200035ustar00rootroot00000000000000ptunnel-ng-1.42/src/win32/includes/pcap/bpf.h000066400000000000000000000706671346103123100207430ustar00rootroot00000000000000/*- * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 * The Regents of the University of California. All rights reserved. * * This code is derived from the Stanford/CMU enet packet filter, * (net/enet.c) distributed as part of 4.3BSD, and code contributed * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence * Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)bpf.h 7.1 (Berkeley) 5/7/91 * * @(#) $Header: /tcpdump/master/libpcap/pcap/bpf.h,v 1.19.2.8 2008-09-22 20:16:01 guy Exp $ (LBL) */ /* * This is libpcap's cut-down version of bpf.h; it includes only * the stuff needed for the code generator and the userland BPF * interpreter, and the libpcap APIs for setting filters, etc.. * * "pcap-bpf.c" will include the native OS version, as it deals with * the OS's BPF implementation. * * XXX - should this all just be moved to "pcap.h"? */ #ifndef BPF_MAJOR_VERSION #ifdef __cplusplus extern "C" { #endif /* BSD style release date */ #define BPF_RELEASE 199606 #ifdef MSDOS /* must be 32-bit */ typedef long bpf_int32; typedef unsigned long bpf_u_int32; #else typedef int bpf_int32; typedef u_int bpf_u_int32; #endif /* * Alignment macros. BPF_WORDALIGN rounds up to the next * even multiple of BPF_ALIGNMENT. */ #ifndef __NetBSD__ #define BPF_ALIGNMENT sizeof(bpf_int32) #else #define BPF_ALIGNMENT sizeof(long) #endif #define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1)) #define BPF_MAXBUFSIZE 0x8000 #define BPF_MINBUFSIZE 32 /* * Structure for "pcap_compile()", "pcap_setfilter()", etc.. */ struct bpf_program { u_int bf_len; struct bpf_insn *bf_insns; }; /* * Struct return by BIOCVERSION. This represents the version number of * the filter language described by the instruction encodings below. * bpf understands a program iff kernel_major == filter_major && * kernel_minor >= filter_minor, that is, if the value returned by the * running kernel has the same major number and a minor number equal * equal to or less than the filter being downloaded. Otherwise, the * results are undefined, meaning an error may be returned or packets * may be accepted haphazardly. * It has nothing to do with the source code version. */ struct bpf_version { u_short bv_major; u_short bv_minor; }; /* Current version number of filter architecture. */ #define BPF_MAJOR_VERSION 1 #define BPF_MINOR_VERSION 1 /* * Data-link level type codes. * * Do *NOT* add new values to this list without asking * "tcpdump-workers@lists.tcpdump.org" for a value. Otherwise, you run * the risk of using a value that's already being used for some other * purpose, and of having tools that read libpcap-format captures not * being able to handle captures with your new DLT_ value, with no hope * that they will ever be changed to do so (as that would destroy their * ability to read captures using that value for that other purpose). */ /* * These are the types that are the same on all platforms, and that * have been defined by for ages. */ #define DLT_NULL 0 /* BSD loopback encapsulation */ #define DLT_EN10MB 1 /* Ethernet (10Mb) */ #define DLT_EN3MB 2 /* Experimental Ethernet (3Mb) */ #define DLT_AX25 3 /* Amateur Radio AX.25 */ #define DLT_PRONET 4 /* Proteon ProNET Token Ring */ #define DLT_CHAOS 5 /* Chaos */ #define DLT_IEEE802 6 /* 802.5 Token Ring */ #define DLT_ARCNET 7 /* ARCNET, with BSD-style header */ #define DLT_SLIP 8 /* Serial Line IP */ #define DLT_PPP 9 /* Point-to-point Protocol */ #define DLT_FDDI 10 /* FDDI */ /* * These are types that are different on some platforms, and that * have been defined by for ages. We use #ifdefs to * detect the BSDs that define them differently from the traditional * libpcap * * XXX - DLT_ATM_RFC1483 is 13 in BSD/OS, and DLT_RAW is 14 in BSD/OS, * but I don't know what the right #define is for BSD/OS. */ #define DLT_ATM_RFC1483 11 /* LLC-encapsulated ATM */ #ifdef __OpenBSD__ #define DLT_RAW 14 /* raw IP */ #else #define DLT_RAW 12 /* raw IP */ #endif /* * Given that the only OS that currently generates BSD/OS SLIP or PPP * is, well, BSD/OS, arguably everybody should have chosen its values * for DLT_SLIP_BSDOS and DLT_PPP_BSDOS, which are 15 and 16, but they * didn't. So it goes. */ #if defined(__NetBSD__) || defined(__FreeBSD__) #ifndef DLT_SLIP_BSDOS #define DLT_SLIP_BSDOS 13 /* BSD/OS Serial Line IP */ #define DLT_PPP_BSDOS 14 /* BSD/OS Point-to-point Protocol */ #endif #else #define DLT_SLIP_BSDOS 15 /* BSD/OS Serial Line IP */ #define DLT_PPP_BSDOS 16 /* BSD/OS Point-to-point Protocol */ #endif /* * 17 is used for DLT_OLD_PFLOG in OpenBSD; * OBSOLETE: DLT_PFLOG is 117 in OpenBSD now as well. See below. * 18 is used for DLT_PFSYNC in OpenBSD; don't use it for anything else. */ #define DLT_ATM_CLIP 19 /* Linux Classical-IP over ATM */ /* * Apparently Redback uses this for its SmartEdge 400/800. I hope * nobody else decided to use it, too. */ #define DLT_REDBACK_SMARTEDGE 32 /* * These values are defined by NetBSD; other platforms should refrain from * using them for other purposes, so that NetBSD savefiles with link * types of 50 or 51 can be read as this type on all platforms. */ #define DLT_PPP_SERIAL 50 /* PPP over serial with HDLC encapsulation */ #define DLT_PPP_ETHER 51 /* PPP over Ethernet */ /* * The Axent Raptor firewall - now the Symantec Enterprise Firewall - uses * a link-layer type of 99 for the tcpdump it supplies. The link-layer * header has 6 bytes of unknown data, something that appears to be an * Ethernet type, and 36 bytes that appear to be 0 in at least one capture * I've seen. */ #define DLT_SYMANTEC_FIREWALL 99 /* * Values between 100 and 103 are used in capture file headers as * link-layer types corresponding to DLT_ types that differ * between platforms; don't use those values for new DLT_ new types. */ /* * This value was defined by libpcap 0.5; platforms that have defined * it with a different value should define it here with that value - * a link type of 104 in a save file will be mapped to DLT_C_HDLC, * whatever value that happens to be, so programs will correctly * handle files with that link type regardless of the value of * DLT_C_HDLC. * * The name DLT_C_HDLC was used by BSD/OS; we use that name for source * compatibility with programs written for BSD/OS. * * libpcap 0.5 defined it as DLT_CHDLC; we define DLT_CHDLC as well, * for source compatibility with programs written for libpcap 0.5. */ #define DLT_C_HDLC 104 /* Cisco HDLC */ #define DLT_CHDLC DLT_C_HDLC #define DLT_IEEE802_11 105 /* IEEE 802.11 wireless */ /* * 106 is reserved for Linux Classical IP over ATM; it's like DLT_RAW, * except when it isn't. (I.e., sometimes it's just raw IP, and * sometimes it isn't.) We currently handle it as DLT_LINUX_SLL, * so that we don't have to worry about the link-layer header.) */ /* * Frame Relay; BSD/OS has a DLT_FR with a value of 11, but that collides * with other values. * DLT_FR and DLT_FRELAY packets start with the Q.922 Frame Relay header * (DLCI, etc.). */ #define DLT_FRELAY 107 /* * OpenBSD DLT_LOOP, for loopback devices; it's like DLT_NULL, except * that the AF_ type in the link-layer header is in network byte order. * * DLT_LOOP is 12 in OpenBSD, but that's DLT_RAW in other OSes, so * we don't use 12 for it in OSes other than OpenBSD. */ #ifdef __OpenBSD__ #define DLT_LOOP 12 #else #define DLT_LOOP 108 #endif /* * Encapsulated packets for IPsec; DLT_ENC is 13 in OpenBSD, but that's * DLT_SLIP_BSDOS in NetBSD, so we don't use 13 for it in OSes other * than OpenBSD. */ #ifdef __OpenBSD__ #define DLT_ENC 13 #else #define DLT_ENC 109 #endif /* * Values between 110 and 112 are reserved for use in capture file headers * as link-layer types corresponding to DLT_ types that might differ * between platforms; don't use those values for new DLT_ types * other than the corresponding DLT_ types. */ /* * This is for Linux cooked sockets. */ #define DLT_LINUX_SLL 113 /* * Apple LocalTalk hardware. */ #define DLT_LTALK 114 /* * Acorn Econet. */ #define DLT_ECONET 115 /* * Reserved for use with OpenBSD ipfilter. */ #define DLT_IPFILTER 116 /* * OpenBSD DLT_PFLOG; DLT_PFLOG is 17 in OpenBSD, but that's DLT_LANE8023 * in SuSE 6.3, so we can't use 17 for it in capture-file headers. * * XXX: is there a conflict with DLT_PFSYNC 18 as well? */ #ifdef __OpenBSD__ #define DLT_OLD_PFLOG 17 #define DLT_PFSYNC 18 #endif #define DLT_PFLOG 117 /* * Registered for Cisco-internal use. */ #define DLT_CISCO_IOS 118 /* * For 802.11 cards using the Prism II chips, with a link-layer * header including Prism monitor mode information plus an 802.11 * header. */ #define DLT_PRISM_HEADER 119 /* * Reserved for Aironet 802.11 cards, with an Aironet link-layer header * (see Doug Ambrisko's FreeBSD patches). */ #define DLT_AIRONET_HEADER 120 /* * Reserved for Siemens HiPath HDLC. */ #define DLT_HHDLC 121 /* * This is for RFC 2625 IP-over-Fibre Channel. * * This is not for use with raw Fibre Channel, where the link-layer * header starts with a Fibre Channel frame header; it's for IP-over-FC, * where the link-layer header starts with an RFC 2625 Network_Header * field. */ #define DLT_IP_OVER_FC 122 /* * This is for Full Frontal ATM on Solaris with SunATM, with a * pseudo-header followed by an AALn PDU. * * There may be other forms of Full Frontal ATM on other OSes, * with different pseudo-headers. * * If ATM software returns a pseudo-header with VPI/VCI information * (and, ideally, packet type information, e.g. signalling, ILMI, * LANE, LLC-multiplexed traffic, etc.), it should not use * DLT_ATM_RFC1483, but should get a new DLT_ value, so tcpdump * and the like don't have to infer the presence or absence of a * pseudo-header and the form of the pseudo-header. */ #define DLT_SUNATM 123 /* Solaris+SunATM */ /* * Reserved as per request from Kent Dahlgren * for private use. */ #define DLT_RIO 124 /* RapidIO */ #define DLT_PCI_EXP 125 /* PCI Express */ #define DLT_AURORA 126 /* Xilinx Aurora link layer */ /* * Header for 802.11 plus a number of bits of link-layer information * including radio information, used by some recent BSD drivers as * well as the madwifi Atheros driver for Linux. */ #define DLT_IEEE802_11_RADIO 127 /* 802.11 plus radiotap radio header */ /* * Reserved for the TZSP encapsulation, as per request from * Chris Waters * TZSP is a generic encapsulation for any other link type, * which includes a means to include meta-information * with the packet, e.g. signal strength and channel * for 802.11 packets. */ #define DLT_TZSP 128 /* Tazmen Sniffer Protocol */ /* * BSD's ARCNET headers have the source host, destination host, * and type at the beginning of the packet; that's what's handed * up to userland via BPF. * * Linux's ARCNET headers, however, have a 2-byte offset field * between the host IDs and the type; that's what's handed up * to userland via PF_PACKET sockets. * * We therefore have to have separate DLT_ values for them. */ #define DLT_ARCNET_LINUX 129 /* ARCNET */ /* * Juniper-private data link types, as per request from * Hannes Gredler . The DLT_s are used * for passing on chassis-internal metainformation such as * QOS profiles, etc.. */ #define DLT_JUNIPER_MLPPP 130 #define DLT_JUNIPER_MLFR 131 #define DLT_JUNIPER_ES 132 #define DLT_JUNIPER_GGSN 133 #define DLT_JUNIPER_MFR 134 #define DLT_JUNIPER_ATM2 135 #define DLT_JUNIPER_SERVICES 136 #define DLT_JUNIPER_ATM1 137 /* * Apple IP-over-IEEE 1394, as per a request from Dieter Siegmund * . The header that's presented is an Ethernet-like * header: * * #define FIREWIRE_EUI64_LEN 8 * struct firewire_header { * u_char firewire_dhost[FIREWIRE_EUI64_LEN]; * u_char firewire_shost[FIREWIRE_EUI64_LEN]; * u_short firewire_type; * }; * * with "firewire_type" being an Ethernet type value, rather than, * for example, raw GASP frames being handed up. */ #define DLT_APPLE_IP_OVER_IEEE1394 138 /* * Various SS7 encapsulations, as per a request from Jeff Morriss * and subsequent discussions. */ #define DLT_MTP2_WITH_PHDR 139 /* pseudo-header with various info, followed by MTP2 */ #define DLT_MTP2 140 /* MTP2, without pseudo-header */ #define DLT_MTP3 141 /* MTP3, without pseudo-header or MTP2 */ #define DLT_SCCP 142 /* SCCP, without pseudo-header or MTP2 or MTP3 */ /* * DOCSIS MAC frames. */ #define DLT_DOCSIS 143 /* * Linux-IrDA packets. Protocol defined at http://www.irda.org. * Those packets include IrLAP headers and above (IrLMP...), but * don't include Phy framing (SOF/EOF/CRC & byte stuffing), because Phy * framing can be handled by the hardware and depend on the bitrate. * This is exactly the format you would get capturing on a Linux-IrDA * interface (irdaX), but not on a raw serial port. * Note the capture is done in "Linux-cooked" mode, so each packet include * a fake packet header (struct sll_header). This is because IrDA packet * decoding is dependant on the direction of the packet (incomming or * outgoing). * When/if other platform implement IrDA capture, we may revisit the * issue and define a real DLT_IRDA... * Jean II */ #define DLT_LINUX_IRDA 144 /* * Reserved for IBM SP switch and IBM Next Federation switch. */ #define DLT_IBM_SP 145 #define DLT_IBM_SN 146 /* * Reserved for private use. If you have some link-layer header type * that you want to use within your organization, with the capture files * using that link-layer header type not ever be sent outside your * organization, you can use these values. * * No libpcap release will use these for any purpose, nor will any * tcpdump release use them, either. * * Do *NOT* use these in capture files that you expect anybody not using * your private versions of capture-file-reading tools to read; in * particular, do *NOT* use them in products, otherwise you may find that * people won't be able to use tcpdump, or snort, or Ethereal, or... to * read capture files from your firewall/intrusion detection/traffic * monitoring/etc. appliance, or whatever product uses that DLT_ value, * and you may also find that the developers of those applications will * not accept patches to let them read those files. * * Also, do not use them if somebody might send you a capture using them * for *their* private type and tools using them for *your* private type * would have to read them. * * Instead, ask "tcpdump-workers@lists.tcpdump.org" for a new DLT_ value, * as per the comment above, and use the type you're given. */ #define DLT_USER0 147 #define DLT_USER1 148 #define DLT_USER2 149 #define DLT_USER3 150 #define DLT_USER4 151 #define DLT_USER5 152 #define DLT_USER6 153 #define DLT_USER7 154 #define DLT_USER8 155 #define DLT_USER9 156 #define DLT_USER10 157 #define DLT_USER11 158 #define DLT_USER12 159 #define DLT_USER13 160 #define DLT_USER14 161 #define DLT_USER15 162 /* * For future use with 802.11 captures - defined by AbsoluteValue * Systems to store a number of bits of link-layer information * including radio information: * * http://www.shaftnet.org/~pizza/software/capturefrm.txt * * but it might be used by some non-AVS drivers now or in the * future. */ #define DLT_IEEE802_11_RADIO_AVS 163 /* 802.11 plus AVS radio header */ /* * Juniper-private data link type, as per request from * Hannes Gredler . The DLT_s are used * for passing on chassis-internal metainformation such as * QOS profiles, etc.. */ #define DLT_JUNIPER_MONITOR 164 /* * Reserved for BACnet MS/TP. */ #define DLT_BACNET_MS_TP 165 /* * Another PPP variant as per request from Karsten Keil . * * This is used in some OSes to allow a kernel socket filter to distinguish * between incoming and outgoing packets, on a socket intended to * supply pppd with outgoing packets so it can do dial-on-demand and * hangup-on-lack-of-demand; incoming packets are filtered out so they * don't cause pppd to hold the connection up (you don't want random * input packets such as port scans, packets from old lost connections, * etc. to force the connection to stay up). * * The first byte of the PPP header (0xff03) is modified to accomodate * the direction - 0x00 = IN, 0x01 = OUT. */ #define DLT_PPP_PPPD 166 /* * Names for backwards compatibility with older versions of some PPP * software; new software should use DLT_PPP_PPPD. */ #define DLT_PPP_WITH_DIRECTION DLT_PPP_PPPD #define DLT_LINUX_PPP_WITHDIRECTION DLT_PPP_PPPD /* * Juniper-private data link type, as per request from * Hannes Gredler . The DLT_s are used * for passing on chassis-internal metainformation such as * QOS profiles, cookies, etc.. */ #define DLT_JUNIPER_PPPOE 167 #define DLT_JUNIPER_PPPOE_ATM 168 #define DLT_GPRS_LLC 169 /* GPRS LLC */ #define DLT_GPF_T 170 /* GPF-T (ITU-T G.7041/Y.1303) */ #define DLT_GPF_F 171 /* GPF-F (ITU-T G.7041/Y.1303) */ /* * Requested by Oolan Zimmer for use in Gcom's T1/E1 line * monitoring equipment. */ #define DLT_GCOM_T1E1 172 #define DLT_GCOM_SERIAL 173 /* * Juniper-private data link type, as per request from * Hannes Gredler . The DLT_ is used * for internal communication to Physical Interface Cards (PIC) */ #define DLT_JUNIPER_PIC_PEER 174 /* * Link types requested by Gregor Maier of Endace * Measurement Systems. They add an ERF header (see * http://www.endace.com/support/EndaceRecordFormat.pdf) in front of * the link-layer header. */ #define DLT_ERF_ETH 175 /* Ethernet */ #define DLT_ERF_POS 176 /* Packet-over-SONET */ /* * Requested by Daniele Orlandi for raw LAPD * for vISDN (http://www.orlandi.com/visdn/). Its link-layer header * includes additional information before the LAPD header, so it's * not necessarily a generic LAPD header. */ #define DLT_LINUX_LAPD 177 /* * Juniper-private data link type, as per request from * Hannes Gredler . * The DLT_ are used for prepending meta-information * like interface index, interface name * before standard Ethernet, PPP, Frelay & C-HDLC Frames */ #define DLT_JUNIPER_ETHER 178 #define DLT_JUNIPER_PPP 179 #define DLT_JUNIPER_FRELAY 180 #define DLT_JUNIPER_CHDLC 181 /* * Multi Link Frame Relay (FRF.16) */ #define DLT_MFR 182 /* * Juniper-private data link type, as per request from * Hannes Gredler . * The DLT_ is used for internal communication with a * voice Adapter Card (PIC) */ #define DLT_JUNIPER_VP 183 /* * Arinc 429 frames. * DLT_ requested by Gianluca Varenni . * Every frame contains a 32bit A429 label. * More documentation on Arinc 429 can be found at * http://www.condoreng.com/support/downloads/tutorials/ARINCTutorial.pdf */ #define DLT_A429 184 /* * Arinc 653 Interpartition Communication messages. * DLT_ requested by Gianluca Varenni . * Please refer to the A653-1 standard for more information. */ #define DLT_A653_ICM 185 /* * USB packets, beginning with a USB setup header; requested by * Paolo Abeni . */ #define DLT_USB 186 /* * Bluetooth HCI UART transport layer (part H:4); requested by * Paolo Abeni. */ #define DLT_BLUETOOTH_HCI_H4 187 /* * IEEE 802.16 MAC Common Part Sublayer; requested by Maria Cruz * . */ #define DLT_IEEE802_16_MAC_CPS 188 /* * USB packets, beginning with a Linux USB header; requested by * Paolo Abeni . */ #define DLT_USB_LINUX 189 /* * Controller Area Network (CAN) v. 2.0B packets. * DLT_ requested by Gianluca Varenni . * Used to dump CAN packets coming from a CAN Vector board. * More documentation on the CAN v2.0B frames can be found at * http://www.can-cia.org/downloads/?269 */ #define DLT_CAN20B 190 /* * IEEE 802.15.4, with address fields padded, as is done by Linux * drivers; requested by Juergen Schimmer. */ #define DLT_IEEE802_15_4_LINUX 191 /* * Per Packet Information encapsulated packets. * DLT_ requested by Gianluca Varenni . */ #define DLT_PPI 192 /* * Header for 802.16 MAC Common Part Sublayer plus a radiotap radio header; * requested by Charles Clancy. */ #define DLT_IEEE802_16_MAC_CPS_RADIO 193 /* * Juniper-private data link type, as per request from * Hannes Gredler . * The DLT_ is used for internal communication with a * integrated service module (ISM). */ #define DLT_JUNIPER_ISM 194 /* * IEEE 802.15.4, exactly as it appears in the spec (no padding, no * nothing); requested by Mikko Saarnivala . */ #define DLT_IEEE802_15_4 195 /* * Various link-layer types, with a pseudo-header, for SITA * (http://www.sita.aero/); requested by Fulko Hew (fulko.hew@gmail.com). */ #define DLT_SITA 196 /* * Various link-layer types, with a pseudo-header, for Endace DAG cards; * encapsulates Endace ERF records. Requested by Stephen Donnelly * . */ #define DLT_ERF 197 /* * Special header prepended to Ethernet packets when capturing from a * u10 Networks board. Requested by Phil Mulholland * . */ #define DLT_RAIF1 198 /* * IPMB packet for IPMI, beginning with the I2C slave address, followed * by the netFn and LUN, etc.. Requested by Chanthy Toeung * . */ #define DLT_IPMB 199 /* * Juniper-private data link type, as per request from * Hannes Gredler . * The DLT_ is used for capturing data on a secure tunnel interface. */ #define DLT_JUNIPER_ST 200 /* * Bluetooth HCI UART transport layer (part H:4), with pseudo-header * that includes direction information; requested by Paolo Abeni. */ #define DLT_BLUETOOTH_HCI_H4_WITH_PHDR 201 /* * AX.25 packet with a 1-byte KISS header; see * * http://www.ax25.net/kiss.htm * * as per Richard Stearn . */ #define DLT_AX25_KISS 202 /* * LAPD packets from an ISDN channel, starting with the address field, * with no pseudo-header. * Requested by Varuna De Silva . */ #define DLT_LAPD 203 /* * Variants of various link-layer headers, with a one-byte direction * pseudo-header prepended - zero means "received by this host", * non-zero (any non-zero value) means "sent by this host" - as per * Will Barker . */ #define DLT_PPP_WITH_DIR 204 /* PPP - don't confuse with DLT_PPP_WITH_DIRECTION */ #define DLT_C_HDLC_WITH_DIR 205 /* Cisco HDLC */ #define DLT_FRELAY_WITH_DIR 206 /* Frame Relay */ #define DLT_LAPB_WITH_DIR 207 /* LAPB */ /* * 208 is reserved for an as-yet-unspecified proprietary link-layer * type, as requested by Will Barker. */ /* * IPMB with a Linux-specific pseudo-header; as requested by Alexey Neyman * . */ #define DLT_IPMB_LINUX 209 /* * FlexRay automotive bus - http://www.flexray.com/ - as requested * by Hannes Kaelber . */ #define DLT_FLEXRAY 210 /* * Media Oriented Systems Transport (MOST) bus for multimedia * transport - http://www.mostcooperation.com/ - as requested * by Hannes Kaelber . */ #define DLT_MOST 211 /* * Local Interconnect Network (LIN) bus for vehicle networks - * http://www.lin-subbus.org/ - as requested by Hannes Kaelber * . */ #define DLT_LIN 212 /* * X2E-private data link type used for serial line capture, * as requested by Hannes Kaelber . */ #define DLT_X2E_SERIAL 213 /* * X2E-private data link type used for the Xoraya data logger * family, as requested by Hannes Kaelber . */ #define DLT_X2E_XORAYA 214 /* * IEEE 802.15.4, exactly as it appears in the spec (no padding, no * nothing), but with the PHY-level data for non-ASK PHYs (4 octets * of 0 as preamble, one octet of SFD, one octet of frame length+ * reserved bit, and then the MAC-layer data, starting with the * frame control field). * * Requested by Max Filippov . */ #define DLT_IEEE802_15_4_NONASK_PHY 215 /* * DLT and savefile link type values are split into a class and * a member of that class. A class value of 0 indicates a regular * DLT_/LINKTYPE_ value. */ #define DLT_CLASS(x) ((x) & 0x03ff0000) /* * NetBSD-specific generic "raw" link type. The class value indicates * that this is the generic raw type, and the lower 16 bits are the * address family we're dealing with. Those values are NetBSD-specific; * do not assume that they correspond to AF_ values for your operating * system. */ #define DLT_CLASS_NETBSD_RAWAF 0x02240000 #define DLT_NETBSD_RAWAF(af) (DLT_CLASS_NETBSD_RAWAF | (af)) #define DLT_NETBSD_RAWAF_AF(x) ((x) & 0x0000ffff) #define DLT_IS_NETBSD_RAWAF(x) (DLT_CLASS(x) == DLT_CLASS_NETBSD_RAWAF) /* * The instruction encodings. */ /* instruction classes */ #define BPF_CLASS(code) ((code) & 0x07) #define BPF_LD 0x00 #define BPF_LDX 0x01 #define BPF_ST 0x02 #define BPF_STX 0x03 #define BPF_ALU 0x04 #define BPF_JMP 0x05 #define BPF_RET 0x06 #define BPF_MISC 0x07 /* ld/ldx fields */ #define BPF_SIZE(code) ((code) & 0x18) #define BPF_W 0x00 #define BPF_H 0x08 #define BPF_B 0x10 #define BPF_MODE(code) ((code) & 0xe0) #define BPF_IMM 0x00 #define BPF_ABS 0x20 #define BPF_IND 0x40 #define BPF_MEM 0x60 #define BPF_LEN 0x80 #define BPF_MSH 0xa0 /* alu/jmp fields */ #define BPF_OP(code) ((code) & 0xf0) #define BPF_ADD 0x00 #define BPF_SUB 0x10 #define BPF_MUL 0x20 #define BPF_DIV 0x30 #define BPF_OR 0x40 #define BPF_AND 0x50 #define BPF_LSH 0x60 #define BPF_RSH 0x70 #define BPF_NEG 0x80 #define BPF_JA 0x00 #define BPF_JEQ 0x10 #define BPF_JGT 0x20 #define BPF_JGE 0x30 #define BPF_JSET 0x40 #define BPF_SRC(code) ((code) & 0x08) #define BPF_K 0x00 #define BPF_X 0x08 /* ret - BPF_K and BPF_X also apply */ #define BPF_RVAL(code) ((code) & 0x18) #define BPF_A 0x10 /* misc */ #define BPF_MISCOP(code) ((code) & 0xf8) #define BPF_TAX 0x00 #define BPF_TXA 0x80 /* * The instruction data structure. */ struct bpf_insn { u_short code; u_char jt; u_char jf; bpf_u_int32 k; }; /* * Macros for insn array initializers. */ #define BPF_STMT(code, k) { (u_short)(code), 0, 0, k } #define BPF_JUMP(code, k, jt, jf) { (u_short)(code), jt, jf, k } #if __STDC__ || defined(__cplusplus) extern int bpf_validate(const struct bpf_insn *, int); extern u_int bpf_filter(const struct bpf_insn *, const u_char *, u_int, u_int); #else extern int bpf_validate(); extern u_int bpf_filter(); #endif /* * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST). */ #define BPF_MEMWORDS 16 #ifdef __cplusplus } #endif #endif ptunnel-ng-1.42/src/win32/includes/pcap/pcap.h000066400000000000000000000333521346103123100211050ustar00rootroot00000000000000/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */ /* * Copyright (c) 1993, 1994, 1995, 1996, 1997 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the Computer Systems * Engineering Group at Lawrence Berkeley Laboratory. * 4. Neither the name of the University nor of the Laboratory may be used * to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#) $Header: /tcpdump/master/libpcap/pcap/pcap.h,v 1.4.2.11 2008-10-06 15:38:39 gianluca Exp $ (LBL) */ #ifndef lib_pcap_pcap_h #define lib_pcap_pcap_h #if defined(WIN32) #include #elif defined(MSDOS) #include #include /* u_int, u_char etc. */ #else /* UN*X */ #include #include #endif /* WIN32/MSDOS/UN*X */ #ifndef PCAP_DONT_INCLUDE_PCAP_BPF_H #include #endif #include #ifdef HAVE_REMOTE // We have to define the SOCKET here, although it has been defined in sockutils.h // This is to avoid the distribution of the 'sockutils.h' file around // (for example in the WinPcap developer's pack) #ifndef SOCKET #ifdef WIN32 #define SOCKET unsigned int #else #define SOCKET int #endif #endif #endif #ifdef __cplusplus extern "C" { #endif #define PCAP_VERSION_MAJOR 2 #define PCAP_VERSION_MINOR 4 #define PCAP_ERRBUF_SIZE 256 /* * Compatibility for systems that have a bpf.h that * predates the bpf typedefs for 64-bit support. */ #if BPF_RELEASE - 0 < 199406 typedef int bpf_int32; typedef u_int bpf_u_int32; #endif typedef struct pcap pcap_t; typedef struct pcap_dumper pcap_dumper_t; typedef struct pcap_if pcap_if_t; typedef struct pcap_addr pcap_addr_t; /* * The first record in the file contains saved values for some * of the flags used in the printout phases of tcpdump. * Many fields here are 32 bit ints so compilers won't insert unwanted * padding; these files need to be interchangeable across architectures. * * Do not change the layout of this structure, in any way (this includes * changes that only affect the length of fields in this structure). * * Also, do not change the interpretation of any of the members of this * structure, in any way (this includes using values other than * LINKTYPE_ values, as defined in "savefile.c", in the "linktype" * field). * * Instead: * * introduce a new structure for the new format, if the layout * of the structure changed; * * send mail to "tcpdump-workers@lists.tcpdump.org", requesting * a new magic number for your new capture file format, and, when * you get the new magic number, put it in "savefile.c"; * * use that magic number for save files with the changed file * header; * * make the code in "savefile.c" capable of reading files with * the old file header as well as files with the new file header * (using the magic number to determine the header format). * * Then supply the changes as a patch at * * http://sourceforge.net/projects/libpcap/ * * so that future versions of libpcap and programs that use it (such as * tcpdump) will be able to read your new capture file format. */ struct pcap_file_header { bpf_u_int32 magic; u_short version_major; u_short version_minor; bpf_int32 thiszone; /* gmt to local correction */ bpf_u_int32 sigfigs; /* accuracy of timestamps */ bpf_u_int32 snaplen; /* max length saved portion of each pkt */ bpf_u_int32 linktype; /* data link type (LINKTYPE_*) */ }; /* * Macros for the value returned by pcap_datalink_ext(). * * If LT_FCS_LENGTH_PRESENT(x) is true, the LT_FCS_LENGTH(x) macro * gives the FCS length of packets in the capture. */ #define LT_FCS_LENGTH_PRESENT(x) ((x) & 0x04000000) #define LT_FCS_LENGTH(x) (((x) & 0xF0000000) >> 28) #define LT_FCS_DATALINK_EXT(x) ((((x) & 0xF) << 28) | 0x04000000) typedef enum { PCAP_D_INOUT = 0, PCAP_D_IN, PCAP_D_OUT } pcap_direction_t; /* * Generic per-packet information, as supplied by libpcap. * * The time stamp can and should be a "struct timeval", regardless of * whether your system supports 32-bit tv_sec in "struct timeval", * 64-bit tv_sec in "struct timeval", or both if it supports both 32-bit * and 64-bit applications. The on-disk format of savefiles uses 32-bit * tv_sec (and tv_usec); this structure is irrelevant to that. 32-bit * and 64-bit versions of libpcap, even if they're on the same platform, * should supply the appropriate version of "struct timeval", even if * that's not what the underlying packet capture mechanism supplies. */ struct pcap_pkthdr { struct timeval ts; /* time stamp */ bpf_u_int32 caplen; /* length of portion present */ bpf_u_int32 len; /* length this packet (off wire) */ }; /* * As returned by the pcap_stats() */ struct pcap_stat { u_int ps_recv; /* number of packets received */ u_int ps_drop; /* number of packets dropped */ u_int ps_ifdrop; /* drops by interface XXX not yet supported */ #ifdef HAVE_REMOTE u_int ps_capt; /* number of packets that are received by the application; please get rid off the Win32 ifdef */ u_int ps_sent; /* number of packets sent by the server on the network */ u_int ps_netdrop; /* number of packets lost on the network */ #endif /* HAVE_REMOTE */ }; #ifdef MSDOS /* * As returned by the pcap_stats_ex() */ struct pcap_stat_ex { u_long rx_packets; /* total packets received */ u_long tx_packets; /* total packets transmitted */ u_long rx_bytes; /* total bytes received */ u_long tx_bytes; /* total bytes transmitted */ u_long rx_errors; /* bad packets received */ u_long tx_errors; /* packet transmit problems */ u_long rx_dropped; /* no space in Rx buffers */ u_long tx_dropped; /* no space available for Tx */ u_long multicast; /* multicast packets received */ u_long collisions; /* detailed rx_errors: */ u_long rx_length_errors; u_long rx_over_errors; /* receiver ring buff overflow */ u_long rx_crc_errors; /* recv'd pkt with crc error */ u_long rx_frame_errors; /* recv'd frame alignment error */ u_long rx_fifo_errors; /* recv'r fifo overrun */ u_long rx_missed_errors; /* recv'r missed packet */ /* detailed tx_errors */ u_long tx_aborted_errors; u_long tx_carrier_errors; u_long tx_fifo_errors; u_long tx_heartbeat_errors; u_long tx_window_errors; }; #endif /* * Item in a list of interfaces. */ struct pcap_if { struct pcap_if *next; char *name; /* name to hand to "pcap_open_live()" */ char *description; /* textual description of interface, or NULL */ struct pcap_addr *addresses; bpf_u_int32 flags; /* PCAP_IF_ interface flags */ }; #define PCAP_IF_LOOPBACK 0x00000001 /* interface is loopback */ /* * Representation of an interface address. */ struct pcap_addr { struct pcap_addr *next; struct sockaddr *addr; /* address */ struct sockaddr *netmask; /* netmask for that address */ struct sockaddr *broadaddr; /* broadcast address for that address */ struct sockaddr *dstaddr; /* P2P destination address for that address */ }; typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *, const u_char *); /* * Error codes for the pcap API. * These will all be negative, so you can check for the success or * failure of a call that returns these codes by checking for a * negative value. */ #define PCAP_ERROR -1 /* generic error code */ #define PCAP_ERROR_BREAK -2 /* loop terminated by pcap_breakloop */ #define PCAP_ERROR_NOT_ACTIVATED -3 /* the capture needs to be activated */ #define PCAP_ERROR_ACTIVATED -4 /* the operation can't be performed on already activated captures */ #define PCAP_ERROR_NO_SUCH_DEVICE -5 /* no such device exists */ #define PCAP_ERROR_RFMON_NOTSUP -6 /* this device doesn't support rfmon (monitor) mode */ #define PCAP_ERROR_NOT_RFMON -7 /* operation supported only in monitor mode */ #define PCAP_ERROR_PERM_DENIED -8 /* no permission to open the device */ #define PCAP_ERROR_IFACE_NOT_UP -9 /* interface isn't up */ /* * Warning codes for the pcap API. * These will all be positive and non-zero, so they won't look like * errors. */ #define PCAP_WARNING 1 /* generic warning code */ #define PCAP_WARNING_PROMISC_NOTSUP 2 /* this device doesn't support promiscuous mode */ char *pcap_lookupdev(char *); int pcap_lookupnet(const char *, bpf_u_int32 *, bpf_u_int32 *, char *); pcap_t *pcap_create(const char *, char *); int pcap_set_snaplen(pcap_t *, int); int pcap_set_promisc(pcap_t *, int); int pcap_can_set_rfmon(pcap_t *); int pcap_set_rfmon(pcap_t *, int); int pcap_set_timeout(pcap_t *, int); int pcap_set_buffer_size(pcap_t *, int); int pcap_activate(pcap_t *); pcap_t *pcap_open_live(const char *, int, int, int, char *); pcap_t *pcap_open_dead(int, int); pcap_t *pcap_open_offline(const char *, char *); #if defined(WIN32) pcap_t *pcap_hopen_offline(intptr_t, char *); #if !defined(LIBPCAP_EXPORTS) #define pcap_fopen_offline(f,b) \ pcap_hopen_offline(_get_osfhandle(_fileno(f)), b) #else /*LIBPCAP_EXPORTS*/ static pcap_t *pcap_fopen_offline(FILE *, char *); #endif #else /*WIN32*/ pcap_t *pcap_fopen_offline(FILE *, char *); #endif /*WIN32*/ void pcap_close(pcap_t *); int pcap_loop(pcap_t *, int, pcap_handler, u_char *); int pcap_dispatch(pcap_t *, int, pcap_handler, u_char *); const u_char* pcap_next(pcap_t *, struct pcap_pkthdr *); int pcap_next_ex(pcap_t *, struct pcap_pkthdr **, const u_char **); void pcap_breakloop(pcap_t *); int pcap_stats(pcap_t *, struct pcap_stat *); int pcap_setfilter(pcap_t *, struct bpf_program *); int pcap_setdirection(pcap_t *, pcap_direction_t); int pcap_getnonblock(pcap_t *, char *); int pcap_setnonblock(pcap_t *, int, char *); int pcap_inject(pcap_t *, const void *, size_t); int pcap_sendpacket(pcap_t *, const u_char *, int); const char *pcap_statustostr(int); const char *pcap_strerror(int); char *pcap_geterr(pcap_t *); void pcap_perror(pcap_t *, char *); int pcap_compile(pcap_t *, struct bpf_program *, const char *, int, bpf_u_int32); int pcap_compile_nopcap(int, int, struct bpf_program *, const char *, int, bpf_u_int32); void pcap_freecode(struct bpf_program *); int pcap_offline_filter(struct bpf_program *, const struct pcap_pkthdr *, const u_char *); int pcap_datalink(pcap_t *); int pcap_datalink_ext(pcap_t *); int pcap_list_datalinks(pcap_t *, int **); int pcap_set_datalink(pcap_t *, int); void pcap_free_datalinks(int *); int pcap_datalink_name_to_val(const char *); const char *pcap_datalink_val_to_name(int); const char *pcap_datalink_val_to_description(int); int pcap_snapshot(pcap_t *); int pcap_is_swapped(pcap_t *); int pcap_major_version(pcap_t *); int pcap_minor_version(pcap_t *); /* XXX */ FILE *pcap_file(pcap_t *); int pcap_fileno(pcap_t *); pcap_dumper_t *pcap_dump_open(pcap_t *, const char *); pcap_dumper_t *pcap_dump_fopen(pcap_t *, FILE *fp); FILE *pcap_dump_file(pcap_dumper_t *); long pcap_dump_ftell(pcap_dumper_t *); int pcap_dump_flush(pcap_dumper_t *); void pcap_dump_close(pcap_dumper_t *); void pcap_dump(u_char *, const struct pcap_pkthdr *, const u_char *); int pcap_findalldevs(pcap_if_t **, char *); void pcap_freealldevs(pcap_if_t *); const char *pcap_lib_version(void); /* XXX this guy lives in the bpf tree */ u_int bpf_filter(const struct bpf_insn *, const u_char *, u_int, u_int); int bpf_validate(const struct bpf_insn *f, int len); char *bpf_image(const struct bpf_insn *, int); void bpf_dump(const struct bpf_program *, int); #if defined(WIN32) /* * Win32 definitions */ int pcap_setbuff(pcap_t *p, int dim); int pcap_setmode(pcap_t *p, int mode); int pcap_setmintocopy(pcap_t *p, int size); #ifdef WPCAP /* Include file with the wpcap-specific extensions */ #include #endif /* WPCAP */ #define MODE_CAPT 0 #define MODE_STAT 1 #define MODE_MON 2 #elif defined(MSDOS) /* * MS-DOS definitions */ int pcap_stats_ex (pcap_t *, struct pcap_stat_ex *); void pcap_set_wait (pcap_t *p, void (*yield)(void), int wait); u_long pcap_mac_packets (void); #else /* UN*X */ /* * UN*X definitions */ int pcap_get_selectable_fd(pcap_t *); #endif /* WIN32/MSDOS/UN*X */ #ifdef HAVE_REMOTE /* Includes most of the public stuff that is needed for the remote capture */ #include #endif /* HAVE_REMOTE */ #ifdef __cplusplus } #endif #endif ptunnel-ng-1.42/test/000077500000000000000000000000001346103123100145005ustar00rootroot00000000000000ptunnel-ng-1.42/test/fuzzer.py000077500000000000000000000235401346103123100164060ustar00rootroot00000000000000#!/usr/bin/env python2.7 """ This is a python ICMP/Ping script, which can be used to fuzz the proxy/forwarder to detect security issues. This script was originally taken from: https://gist.githubusercontent.com/pklaus/856268/raw/a4e295d0dbd1140bddc90616e93ab3b19718a87b/ping.py """ import os import time import socket import struct import select import random import asyncore UINT_MAX=4294967295 USHORT_MAX=65535 ICMP_ECHO_REQUEST = 8 ICMP_PROTO = socket.getprotobyname('icmp') ERROR_DESCR = { 1: ' - Note that ICMP messages can only be ' 'sent from processes running as root.', 10013: ' - Note that ICMP messages can only be sent by' ' users or processes with administrator rights.' } __all__ = ['create_packet', 'do_one', 'verbose_ping', 'PingQuery', 'multi_ping_query'] def checksum(source_string): # I'm not too confident that this is right but testing seems to # suggest that it gives the same answers as in_cksum in ping.c. sum = 0 count_to = (len(source_string) / 2) * 2 count = 0 while count < count_to: this_val = ord(source_string[count + 1])*256+ord(source_string[count]) sum = sum + this_val sum = sum & 0xffffffff # Necessary? count = count + 2 if count_to < len(source_string): sum = sum + ord(source_string[len(source_string) - 1]) sum = sum & 0xffffffff # Necessary? sum = (sum >> 16) + (sum & 0xffff) sum = sum + (sum >> 16) answer = ~sum answer = answer & 0xffff # Swap bytes. Bugger me if I know why. answer = answer >> 8 | (answer << 8 & 0xff00) return answer def create_packet(id, data=None): """Create a new echo request packet based on the given "id".""" # Header is type (8), code (8), checksum (16), id (16), sequence (16) header = struct.pack('bbHHh', ICMP_ECHO_REQUEST, 0, 0, id, 1) if data is None: data = 192 * 'Q' # Calculate the checksum on the data and the dummy header. my_checksum = checksum(header + data) # Now that we have the right checksum, we put that in. It's just easier # to make up a new header than to stuff it into the dummy. header = struct.pack('bbHHh', ICMP_ECHO_REQUEST, 0, socket.htons(my_checksum), id, 1) return header + data def do_one(dest_addr, timeout=1, data=None): """ Sends one ping to the given "dest_addr" which can be an ip or hostname. "timeout" can be any integer or float except negatives and zero. Returns either the delay (in seconds) or None on timeout and an invalid address, respectively. """ try: my_socket = socket.socket(socket.AF_INET, socket.SOCK_RAW, ICMP_PROTO) except socket.error as e: if e.errno in ERROR_DESCR: # Operation not permitted raise socket.error(''.join((e.args[1], ERROR_DESCR[e.errno]))) raise # raise the original error try: host = socket.gethostbyname(dest_addr) except socket.gaierror: return # Maximum for an unsigned short int c object counts to 65535 so # we have to sure that our packet id is not greater than that. packet_id = int((id(timeout) * random.random()) % 65535) packet = create_packet(packet_id, data) while packet: # The icmp protocol does not use a port, but the function # below expects it, so we just give it a dummy port. sent = my_socket.sendto(packet, (dest_addr, 1)) packet = packet[sent:] delay = receive_ping(my_socket, packet_id, time.time(), timeout) my_socket.close() return delay def receive_ping(my_socket, packet_id, time_sent, timeout): # Receive the ping from the socket. time_left = timeout while True: started_select = time.time() ready = select.select([my_socket], [], [], time_left) how_long_in_select = time.time() - started_select if ready[0] == []: # Timeout return time_received = time.time() rec_packet, addr = my_socket.recvfrom(1024) icmp_header = rec_packet[20:28] type, code, checksum, p_id, sequence = struct.unpack( 'bbHHh', icmp_header) if p_id == packet_id: return time_received - time_sent time_left -= time_received - time_sent if time_left <= 0: return def verbose_ping(dest_addr, data=None, timeout=2, count=4): """ Sends one ping to the given "dest_addr" which can be an ip or hostname. "timeout" can be any integer or float except negatives and zero. "count" specifies how many pings will be sent. Displays the result on the screen. """ for i in range(count): print('ping {}...'.format(dest_addr)) delay = do_one(dest_addr, timeout, data) if delay == None: print('failed. (Timeout within {} seconds.)'.format(timeout)) else: delay = round(delay * 1000.0, 4) print('get ping in {} milliseconds.'.format(delay)) print('') class PingQuery(asyncore.dispatcher): def __init__(self, host, p_id, timeout=0.5, ignore_errors=False, data=None): """ Derived class from "asyncore.dispatcher" for sending and receiving an icmp echo request/reply. Usually this class is used in conjunction with the "loop" function of asyncore. Once the loop is over, you can retrieve the results with the "get_result" method. Assignment is possible through the "get_host" method. "host" represents the address under which the server can be reached. "timeout" is the interval which the host gets granted for its reply. "p_id" must be any unique integer or float except negatives and zeros. If "ignore_errors" is True, the default behaviour of asyncore will be overwritten with a function which does just nothing. """ asyncore.dispatcher.__init__(self) try: self.create_socket(socket.AF_INET, socket.SOCK_RAW, ICMP_CODE) except socket.error as e: if e.errno in ERROR_DESCR: # Operation not permitted raise socket.error(''.join((e.args[1], ERROR_DESCR[e.errno]))) raise # raise the original error self.time_received = 0 self.time_sent = 0 self.timeout = timeout # Maximum for an unsigned short int c object counts to 65535 so # we have to sure that our packet id is not greater than that. self.packet_id = int((id(timeout) / p_id) % 65535) self.host = host self.packet = create_packet(self.packet_id, data) if ignore_errors: # If it does not care whether an error occured or not. self.handle_error = self.do_not_handle_errors self.handle_expt = self.do_not_handle_errors def writable(self): return self.time_sent == 0 def handle_write(self): self.time_sent = time.time() while self.packet: # The icmp protocol does not use a port, but the function # below expects it, so we just give it a dummy port. sent = self.sendto(self.packet, (self.host, 1)) self.packet = self.packet[sent:] def readable(self): # As long as we did not sent anything, the channel has to be left open. if (not self.writable() # Once we sent something, we should periodically check if the reply # timed out. and self.timeout < (time.time() - self.time_sent)): self.close() return False # If the channel should not be closed, we do not want to read something # until we did not sent anything. return not self.writable() def handle_read(self): read_time = time.time() packet, addr = self.recvfrom(1024) header = packet[20:28] type, code, checksum, p_id, sequence = struct.unpack("bbHHh", header) if p_id == self.packet_id: # This comparison is necessary because winsocks do not only get # the replies for their own sent packets. self.time_received = read_time self.close() def get_result(self): """Return the ping delay if possible, otherwise None.""" if self.time_received > 0: return self.time_received - self.time_sent def get_host(self): """Return the host where to the request has or should been sent.""" return self.host def do_not_handle_errors(self): # Just a dummy handler to stop traceback printing, if desired. pass def create_socket(self, family, type, proto): # Overwritten, because the original does not support the "proto" arg. sock = socket.socket(family, type, proto) sock.setblocking(0) self.set_socket(sock) # Part of the original but is not used. (at least at python 2.7) # Copied for possible compatiblity reasons. self.family_and_type = family, type # If the following methods would not be there, we would see some very # "useful" warnings from asyncore, maybe. But we do not want to, or do we? def handle_connect(self): pass def handle_accept(self): pass def handle_close(self): self.close() def build_pt_pkt(ip, port, state, ack, seq, rsv, data): if type(ip) is int: dst_ip = ip elif type(ip) is str: dst_ip = struct.unpack(' Ping Tunnel [N]ew[G]eneration - Send TCP traffic over ICMP

Ping Tunnel [N]ew[G]eneration

For those times when everything else is blocked.

By Daniel Stødle, daniels@cs.uit.no
Last updated: 5. September 2011

Contents

What is it?

 Ptunnel is an application that allows you to reliably tunnel TCP connections to a remote host using ICMP echo request and reply packets, commonly known as ping requests and replies. At first glance, this might seem like a rather useless thing to do, but it can actually come in handy in some cases. The following example illustrates the main motivation in creating ptunnel:

Setting: You're on the go, and stumble across an open wireless network. The network gives you an IP address, but won't let you send TCP or UDP packets out to the rest of the internet, for instance to check your mail. What to do? By chance, you discover that the network will allow you to ping any computer on the rest of the internet. With ptunnel, you can utilize this feature to check your mail, or do other things that require TCP.

Features and requirements

Ptunnel is not a feature-rich tool by any means, but it does what it advertises. So here is what it can do:

  • Tunnel TCP using ICMP echo request and reply packets
  • Connections are reliable (lost packets are resent as necessary)
  • Handles multiple connections
  • Acceptable bandwidth (150 kb/s downstream and about 50 kb/s upstream are the currently measured maximas for one tunnel, but with tweaking this can be improved further)
  • Authentication, to prevent just anyone from using your proxy
So what do you need for all this to work?

  • One computer accessible on the internet that is not firewalled (or at least allows incoming ICMP packets)
  • A computer to act as the client (this will usually be your laptop, on the go..)
  • Root access, preferably on both computers
  • A posix-compliant OS, with libpcap (for packet capturing) and its associated headers installed (typically available in a dev-package on Ubuntu)
  • Or: Windows with mingw and WinPcap installed
Compiling the sources simply consists of running make. No ./configure, make, make install, just make. On Windows, you'll need to run make ptunnel.exe, but that's it. The resulting binary is called ptunnel. See the usage section below for info on running it.

How it works

 This is a technical description of how ptunnel works. If you're not interested in low-level networking details, you can skip this section. It might help to read it either way, as it provides some insights into the situations where ptunnel doesn't work. Ptunnel works by tunneling TCP connections over ICMP packets. In the following, we will talk about the proxy, the client and the destination. The proxy is the "endpoint" for our ping packets, i.e. the computer that we send the ping packets to. The client is the computer we're trying to surf the net from, and the destination is the computer we would normally be trying to access over TCP (such as a web site or an ssh server somewhere).

So, in order to accomplish this, we need the ability to send and receive ping packets. Many operating systems enable us to do this using so-called raw sockets. Raw sockets is the preferred mechanism for sending ICMP packets, and is used by both the proxy and the client. Unfortunately, raw sockets require root, so there is a provision for using standard datagram sockets if they are supported by the operating system (Mac OS X 10.2 or later supports this, but Linux systems will require root either way). Ptunnel supports this, however it is not recommended for actual use. We'll get back to the reason later.

The client will perform all its communications using ICMP echo request (ping) packets (type 8), whereas the proxy will use echo reply packets (type 0). In theory, it is possible to have the proxy also use echo request packets (and thus make it operate without root), but these packets are not necessarily forwarded to the client beyond the host network, so they are not used.

Machine setup
Figure 1. Networking setup.

The protocol

The proxy protocol uses four different message types combined with sequence numbers and an acknowledgement field. A magic number is used to differentiate our ping requests and replies from "usual" pings. The general packet format (not including the IP or ICMP headers) can be seen in the figure below.

Packet format
Figure 2. The packet format used to exchange messages between client and proxy.

The IP and port fields are only used in packets from the client to the proxy. They indicate where the client wants the received packets to be forwarded (they are really only used once - when the proxy receives the first message with state code kProxy_start).

 State codes:
kProxy_start = 0;
kProto_data = 1;
kProto_ack = 2;
kProto_close = 3;
kProto_authenticate = 4;

Identifier flags:
kUser_flag = 1 << 30;
kProxy_flag = 1 << 31;

The state code serves a dual purpose. First, it indicates what kind of message is being received - either a message starting a new proxy session (kProxy_start), a message containing data to be forwarded (kProto_data), an explicit acknowledgement of received packets (kProto_ack, a close message (kProto_close) or an authentication challenge/response (kProto_authenticate). Second, it indicates who sent the message: A message sent by the client will have the kUser_flag bit set, whereas a message sent by the proxy has the kProxy_flag bit set. This is necessary since a ping request will cause the operating system on the proxy computer to return its own echo reply, which is identical to the packet we just sent to the proxy. The ack and seq fields are tightly related. Modelled after the use of acknowledgements in TCP, the ptunnel protocol places the sequence number of the last packet received into the ack field of any outgoing message. The seq field is a monotonically increasing 16-bit counter, that is allowed to wrap around (ok, so I guess it's monotonic until it wraps around). Whenever an outgoing packet has been waiting for an acknowledgement too long, the peer will attempt to resend the first packet not yet acknowledged.

The length field simply indicates the length of the data portion of the packet, and is 0 for all other state values than kProto_data. Finally the rsv field contains two bytes that are reserved (for now they serve as padding).

On receiving a kProxy_start request, a proxy will open a TCP connection to the server given by the ip and port fields. As data comes in over the TCP connection, the proxy will convert the data to ICMP echo reply packets, and send them to the remote peer. The client will do the same, except its packets will always be echo request packets.

Authentication

As of version 0.60, Ping Tunnel supports authentication. The authentication used is very simple, and works as follows. The user first specifies a password or passphrase, which is then hashed using the MD5 algorithm (Ping Tunnel uses the implementation by L. Peter Deutsch, available here. Note that the implementation is included with Ping Tunnel, so there is no need to download it separately).

Whenever a proxy receives a request for a new tunnel, it will respond with an authentication challenge. The challenge consists of a timestamp augmented with random data, totalling 32 bytes. The response is calculated as follows (the + denotes string concatenation):

md5(challenge + md5(password))

The proxy verifies the result by computing the same md5 sums, and then comparing the two. If authentication succeeds, the proxy allows TCP traffic to start flowing in either direction; if not, the connection is torn down.

Handling multiple connections

The proxy handles multiple different connections by using the ICMP identifier field. A client will randomly generate an identifier when it starts a session, and the remote peer will use this identifier to associate the packets with a connection. The mechanism is not foolproof, but works acceptably as long as no two instances attempt to use the same identifier (there is currently no mechanism for reporting such errors).

The ICMP sequence number field is not used by ptunnel, mostly due to fears that some routers might drop packets whose sequence number repeats. Instead, a separate sequence number is used as part of the ptunnel packet format (see above).

Send and receive windows

Ptunnel uses the simple concept of send and receive windows for controlling the number of packets that can be in-flight at the same time. The window is currently statically allocated at 64 packets, but the number can be tweaked by modifying the ptunnel header file (yes, a recompile is required). Increasing the window size will improve the maximum potential bandwidth. The send and receive windows are simply implemented as a set of circular arrays, with pointers indicating the next available send/receive slot, and the first non-acked packet.

Handling packet loss

Ptunnel handles packet loss by resending (presumably) lost packets. As it sends packets, it will increment a sequence number. Both the client and proxy maintain their own sequence number, and also a number indicating the last sequence number acknowledged by the remote peer. Whenever too much time (1.5 seconds) passes without a packet being acknowledged, the peer will resend that packet.

Note that the peer will only resend the first missing packet. Once that packet has been acknowledged, it may resend the next packet(s), depending on how many packets were acknowledged. If the next few packets are acknowlegded as well, they are removed from the send queue. It is not uncommon for one packet to get lost, with most of the others making it through. This mechanism avoids unecessary resends as much as possible.

Congestion control

Ptunnel currently does no explicit congestion control. It will send as many ping packets as the window size allows, as slowly or as quickly as it sees fit. This might be improved in the future, if it turns out to be a problem (which is not at all unlikely..).

When things don't work

There are a number of situations where ptunnel will fail. They can briefly be put into the following categories:
  1. Outgoing/incoming ping not allowed, or filtered by a gateway somewhere along the way
  2. Operating system causing trouble
  3. Probably some other failures as well ;)

We can't handle the first failure - if our packets are filtered before we can get at them, there's little we can do. It is possible to deal with the second scenario by using the packet capturing library to get the packets before the OS sees them. This is necessary on Mac OS X, and may be necessary on other platforms as well. The problem lies in that the OS may occasionally not deliver ICMP packets to the raw socket we have opened for sending and receiving. This happens when the ICMP packet is an echo request (which the OS handles by itself) or when the ICMP packet is a resend (for some weird reason). The workaround is to use packet capture, however this tends to diminish bandwidth by quite a bit. For this reason, you should always try to run the proxy without packet capturing, and see if that works first. (This is the default mode.)

Download

The current version of ptunnel is 0.71, and the source code is available for download here. Some other links:

Ptunnel has so far been tested on a variety of configurations, including Linux Fedora Core 2 and Mac OS X 10.3.6 and above.

Debian users can install Ping Tunnel by adding the following to /etc/apt/sources.list

deb http://www.cti.ecp.fr/~beauxir5/debian binary/
deb-src http://www.cti.ecp.fr/~beauxir5/debian source/

And then run apt-get update followed by apt-get install ptunnel. A big thanks to Romain Beauxis for taking the time to create a Debian package for ptunnel!

As of version 0.70, ptunnel has support for Windows built-in, thanks to Mike Miller. You will need mingw and WinPcap (download here) installed to compile on Windows. Please note that I don't use Windows, so I can not provide support for compilation-specific issues regarding the Windows port. Wouter van der Veer has been kind enough to provide a compiled Windows binary on his website, which you can download here.

Using ptunnel

 Client: ./ptunnel -p <proxy address> -lp <listen port> -da <destination address> -dp <destination port> [-c <network device>] [-v <verbosity>] [-f <logfile>] [-u] [-x password]
Proxy: ./ptunnel [-c <network device>] [-v <verbosity>] [-f <logfile>] [-u] [-x password]

The -p switch sets the address of the host on which the proxy is running. A quick test to see if the proxy will work is simply to try pinging this host - if you get replies, you should be able to make the tunnel work.

The -lp, -da and -dp switches set the local listening port, destination address and destination port. For instance, to tunnel ssh connections from the client machine via a proxy running on proxy.pingtunnel.com to the computer login.domain.com, the following command line would be used:

sudo ./ptunnel -p proxy.pingtunnel.com -lp 8000 -da login.domain.com -dp 22

An ssh connection to login.domain.com can now be established as follows:

ssh -p 8000 localhost

If ssh complains about potential man-in-the-middle attacks, simply remove the offending key from the known_hosts file. The warning/error is expected if you have previously ssh'd to your local computer (i.e., ssh localhost), or you have used ptunnel to forward ssh connections to different hosts.

Of course, for all of this to work, you need to start the proxy on your proxy-computer (we'll call it proxy.pingtunnel.com here). Doing this is very simple:

sudo ./ptunnel

If you find that the proxy isn't working, you will need to enable packet capturing on the main network device. Currently this device is assumed to be an ethernet-device (i.e., ethernet or wireless). Packet capturing is enabled by giving the -c switch, and supplying the device name to capture packets on (for instance eth0 or en1). The same goes for the client. On versions of Mac OS X prior to 10.4 (Tiger), packet capturing must always be enabled (both for proxy and client), as resent packets won't be received otherwise.

To protect yourself from others using your proxy, you can protect access to it with a password using the -x switch. The password is never sent in the clear, but keep in mind that it may be visible from tools like top or ps, which can display the command line used to start an application.

Finally, the -u switch will attempt to run the proxy in unprivileged mode (i.e., no need for root access), and the -v switch controls the amount of output from ptunnel. -1 indicates no output, 0 shows errors only, 1 shows info messages, 2 gives more output, 3 provides even more output, level 4 displays debug info and level 5 displays absolutely everything, including the nasty details of sends and receives. The -f switch allows output to be saved to a logfile.

Changes

0.72 - 5. September 2011
  • Fixes an authentication bug that would manifest as hung connections with protocols that send data from the client-side before receiving data from the server-side. Thanks to StalkR for locating the bug and fixing it.
  • Fixes a crash when attempting to enable packet-capture for non-existing network devices. Thanks to Steffen Wendzel for the patch.

0.71 - 22. June 2009

  • Added security features and SELinux support, courtesy of Sebastien Raveau.

0.70 - 12. January 2009

  • Added rudimentary support for tunneling over UDP port 53. This may or may not be useful.
  • Added built-in support for compiling on Windows, thanks to Mike Miller.
  • Added syslog support, also courtesy of Mike Miller.
  • Experimental support for spoofing the source IP address. The source address must be explicitly configured in the source code, and it might not work (which is why it's experimental). To enable, define kPT_add_iphdr to 1.

0.62 - Never released

  • Added many comments to the ptunnel header file.
  • Moved most include directives to the header file.
  • Fixed crash if proxy or destination hostnames could not be looked up.

0.61 - 26. May 2005

  • Noted that ptunnel now works without packet capturing on Mac OS X 10.4 Tiger.
  • Log files are now opened in append-mode (i.e., not truncated).
  • Fixed a bug that could cause ptunnel to crash if passwords shorter than 16 characters were used (the overwhelming majority of passwords, most likely!).

0.60 - 15. Apr 2005

  • Added authentication support, changing parts of the ptunnel protocol.
  • Added a manpage.
  • Added MD5 implementation by L. Peter Deutsch for authentication.
  • Moved declaration of a variable to allow ptunnel to compile cleanly on gcc 2.95 - thanks Choong!
  • Added error handling for proxy connections.
  • Fixed a problem with printing send/recv info. All verbosity levels should work now.
  • Updated contact info.

0.55 - 18. Feb 2005

  • Fixed a locking bug that would manifest itself when the maximum connection count on the proxy was reached.
  • Fixed ptunnel to compile correctly on 64-bit architectures (thanks to Åsmund Grammeltvedt for pointing out the necessary changes!)
  • Added a new logging level (level 5). Level 4 no longer outputs send and receive info; for this info level 5 is necessary.
  • When libpcap is in use, the interface is no longer put in promiscous mode. This has never been necessary, and also makes it impossible to use ptunnel with more than one client on the same network.
  • Discovered a problem with pcap that would cause ptunnel to hang when pcap was in use. This problem has not been resolved; the workaround is to simply re-execute the client, or disable pcap if possible.
  • Added support for specifying a log file on the command line, using the -f switch.

0.54 - 1. Feb 2005

  • Fixed a byte-order bug (thanks Alfred!)

0.53 - 31. Jan 2005

  • Fixed a threading bug, and implemented support for limiting the maximum number of tunnels.

Thanks to Alfred Young for reporting and fixing the following bugs:

  • Fixed a bug with packets captured via libpcap, where the struct sockaddr wasn't properly zeroed.
  • Fixed a byte order bug in create_and_insert_proxy_desc.
  • Fixed a memory leak in remove_proxy_desc.

0.52 - 3. Jan 2005

  • Fixed a problem introduced by the ICMP ID field changes. The proxy didn't retain the ID of the packets received from clients, resulting in dropped ICMP packets at the router. This in turn lead to the tunnel no longer working, depending on the strictness of the router. This version fixes that problem.
  • Makefile is better now, thanks to Dries Verachtert.

0.51 - 2. Jan 2005

  • Fixed incorrect checksum calculation for resent packets.
  • Stopped relying on the ICMP packet's "built-in" ID field, and moved the information to the data portion of the packet.
  • Changed default verbosity level from debug to verbose.

0.50 - 7. Dec 2004
Initial public release.

License

Ptunnel is licensed under the BSD license.

Feedback

I'd be grateful for any feedback you may have - send it to me here: daniels@cs.uit.no. I'm interested in hearing about bugs, suggestions and naturally general criticism. If you find it useful, I'd love to know about that too :)

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