pax_global_header00006660000000000000000000000064141633067300014515gustar00rootroot0000000000000052 comment=9e46c66cff0c0cdcca653141b1664dbf6f9370ed bgpq3-0.1.36.1/000077500000000000000000000000001416330673000127575ustar00rootroot00000000000000bgpq3-0.1.36.1/.gitignore000066400000000000000000000000721416330673000147460ustar00rootroot00000000000000CVS/ Makefile config.h *.o bgpq3 config.log config.status bgpq3-0.1.36.1/CHANGES000066400000000000000000000323001416330673000137500ustar00rootroot000000000000000.1.36.1 (2021-09-27): - minor bugfix: update version number in configure and bgpq3.spec. 0.1.36 (2021-09-22): - initial support for as-transparent route-servers in import as-path generation: now you can use -f 0 to not enforce first asn in path. No actual changes for Bird and JSON, not yet supported for Nokia (including MD) and OpenBGPD. Use case reported by Mikhail Grishin. - correct sequencing in empty prefix-lists. Reported by Brooks Swinnerton. - fix empty route-filter-lists generation. Reported by Antti Ristimäki. - minor documentation cleanup: bgpq3 supports much more vendors than just Cisco and Juniper. Copyright years updated. - Nokia SR OS "classic" actually supports aggregation and and more-specific filtering in prefix-lists. Thanks to mfisher128 for reporting. - change log level for prefixes with wrong address family from error to debugging: it's perfectly correct to have prefixes of different families in route-sets. Thanks to Jay Ford for suggestion. - increase select timeout to 30 sec. - correct spacing for IOS-XR. Reported by Mathias Wolkert. - hyperaggregation (supernets-only) mode. - correct Huawei as-path-filter generation. Thanks to JKejsjwq. - implement -f 0 (transparent route-server scenario) for Nokia too. - document IOS-XR prefix-list limitation. Thanks to Saku Ytti. 0.1.35 (2018-11-30): - initial support for Juniper route-filter-lists (JunOS 16.2+). - too large (>124bytes) sources list was not handled correctly. Reported by Pier Carlo Chiodi. - initial support for Huawei format (prefix-lists and as-path filters) New flag -U. Requested by Alexander Wagberg. - fix ipv6 prefix-ranges. Reported by Jay Ford. - OpenBGPd change: -E now generates prefix-set instead of prefix-list. Based on submission by Denis Fondras - new option -w, allowing to 'validate' AS numbers included in as-path access-lists: only those AS having registered route-objects are allowed. By default checks route[4] presence, to check route6 objects shall be used together with -6. - cleanup OpenBGPd prefix-sets. Submitted by Claudio Jeker. - new flag -t: generate as-sets for OpenBGPD (OpenBSD 6.4+), BIRD and JSON formats. Based on submission by Claudio Jeker. - new flag -n: support for Nokia SR OS MD-CLI. Based on examples provided by Greg Hankins. - irrd queries for asn32 changed from asdot to asplain notation. Thanks to Troy2914 for heads up. 0.1.35-rc2 (2017-06-14) - OpenBSD need . Reported by Denis Fondras. - OpenBGPD output shall not emit 'deny any from any' in case of empty prefix-list. New flag -a introduced to allow peer-as indication. When this flag is not specified, empty prefix-list is generated (will not be accepted by OpenBGPD). Reported by Denis Fondras 0.1.35-rc (2017-30-05) - Nokia SR OS (formerly Alcatel-Lucent) support. Based on submission by Michail Litvak. - sync man-page with readme.md - socket() EAFNOSUPPORT error handling 0.1.33 (2016-10-14) - OpenBGPD support (-B). Submitted by Peter Hessler. 0.1.32 (2016-08-28) - rollback 0.1.32-rc2 (2015-07-01) change: by default all IRRD sources are allowed by default. Documentation updated to mark radb,ripe,apnic as 'recommended', not as 'preset default'. untagged yet (2016-05-10) - fix: was not able to build on Solaris. Thanks to Mansoor Ali Khan. - feature: IOS XR mode now supports as-paths (ios-regexs). Thanks to Tassos Chatzithomaoglou for examples and proofreading. (additions from 2015-09-23) - bugfix: stoplist shall be able to catch AS numbers as promised. - bugfix: bgpq3 shall not hang at unknown escapes in -M.. - gotcha: "ANY" object in recursive mode ignored: shut complaints on "ERROR:unexpected object 'ANY' in expanded_macro_limit (in response to !iAS-SET-SCOPESKY)" (object contains mbrs-by-ref: ANY). (additions from 2015-08-30) - bugfix: OpenBSD sys/queue.h does not have STAILQ_ interface. Thanks to Pedro Caetano for reporting and testing. - feature: alternate whois port can be configured with -h host[:port] - feature: new format char %N (object name) in formatted output. Thanks to Denis Fondras. - feature: new format chars %m (prefix mask) and %i (inverse mask) in formatted output. 0.1.32-rc5 (2015-07-12) - feature: -L : limit recursion depth when expanding as-sets (default: not limited). Based on idea by Eugene Demidov. - feature: stoplist. Now you can add EXCEPT Object... at the end of bgpq3 command line and corresponding as-sets and asns will not be expanded (does not works for prefixes and prefix-sets yet). - internals: major pipelining rewrite and some code cleanup. 0.1.32-rc4 (2015-07-06) - change: BIRD can't handle empty lists (NAME = []), so they are not generated at all. 0.1.32-rc3 (2015-07-01) - feature: option -s can be used to generate sequence numbers in IOS prefix-lists - feature: option -F can be used to generate output in user-defined format. Only prefix-lists supported for now. 0.1.32-rc2 (2015-07-01) - bugfix: when no sources provided in command line and via IRRD_SOURCES env, no source limitation were sent to IRRd. Thanks to Mikhail A. Grishin. 0.1.32-rc (2015-06-28) - bugfix: F source(s) unavailable message from IRRD was ignored. Please note: this error is caught only when all the specified sources are invalid. For example, 'bgpq3 -s nonexistant' will fail, however, 'bgpq3 -s nonexistant,ripe' will not fail and will use only ripe source. Thanks to Mikhail A. Grishin for reporting. - RIPE-style queries (-T route6 -i origin asNNN) replaced with IRRd-style !6asNNN queries. 0.1.31 (2015-06-23) - pipelining mode now counts buffered requests and issues dequeue when new request can overflow allocated buffer. So, bgpq3 shall no more require TCP tuning (it is still recomended, though). - tcp tuning parameters decreased in README (sx_maxsockbuf will not allow buffer over 2Mb anyway). 0.1.30 (2015-06-16) - bugfix: private asns with number > 2^31 were printed as negative integers. Thanks to Henrik Thostrup Jensen. - do not use ASNs reserved for documentation purposes and private use: 64496-64511 For documentation and sample code; reserved by [RFC5398] 64512-65534 For private use; reserved by [RFC6996] 65535 Reserved by [RFC7300] 65536-65551 For documentation and sample code; reserved by [RFC5398] 4200000000-4294967294 For private use; reserved by [RFC6996] 4294967295 Reserved by [RFC7300] Please, use new -p flag to include these asn's. Suggested by Henrik Thostrup Jensen and Job Snijders. - allow as-path generation with BIRD output. Suggested by Jiri Mikulas. - merge README.md changes by Job Snijders. - bugfix: incorrect asdot representation (as101. without symbols after dot) is not allowed anymore. 0.1.29 (2015-05-04) - do not include routes registered for AS23456 (transition-as) by default. Use new option -2 to restore old behaviour. 0.1.28 (2015-03-10) - minor changes: .spec update, non-silent failure on wrong af, more room for masklen... 0.1.27 (2015-03-10) - bugfix: some ipv6 prefixes were not parsed correctly since 0.1.26. Thanks to Job Snijders. 0.1.26 (2015-02-19) - RPSL support, can be found in rs-esnetcustomers. Thanks to Kris O'Connell for reporting. 0.1.25 (2014-10-29) - JSON support extended to handle "as-paths" too. Well, actually, as there are no defined format for as-path in json, bgpq3 just creates simple object like following: snar@fri:~/compile/bgpq3>./bgpq3 -j3f 20597 as-eltel {"NN": [ 112,5495,6857,8377,20597,34102,35357,43951, 52007,56764,197759,197888,198610,201499 ]} Based on suggestion by Henrik Thostrup Jensen. - -W len option documented. 0.1.24 (2014-07-31) - empty prefix-lists (Cisco), extended access-lists (Cisco), as-path filters (Cisco and Juniper) and route-filters (Juniper) handling: explicit 'deny any' entry now generated instead of implicit 'permit-any'. Based on suggestion by Tore Anderson. 0.1.23 (2014-07-30) - bugfix: use of -M option caused major slowdown as it turned off request pipelining... Thanks to Tore Anderson. 0.1.22 (2014-07-27) - bugfix: allow network object with stray spaces after prefix length. Found by Tom Eichhorn in 2620:74:14::/48 (VeriSign Route6, RADB). - bugfix: networks with leading zeros (02.51.252.0/22, as4787) are not parsed correctly in inet_ntop.. Found by Tom Eichhorn. 0.1.21 (2014-06-05) - new flag -b: generate prefix-filters for BIRD (http://bird.network.cz), contributed by Job Snijders. 0.1.20-todo2 (2014-05-01) - new flag -r , allowing bgpq to generate limited set of more-specific routes - only routes with prefix-length >= are accepted. Thanks to Pavel Gulchouck for suggesion. 0.1.20-todo (2013-10-07) - socket close code fixed. Thanks to Martin J. Levy. - new flag -4, "force ipv4". Actually does a little more than allowing for pedantic checks. Thanks to Martin J. Levy. 0.1.19 (2013-05-09) - CLANG compilation issues fixed. - bgpq3.spec added. Thanks to Arnoud Vermeer. 0.1.18 (2013-01-08) - JSON output format. Thanks to Job Snijders (Atrato Networks). 0.1.17 (2012-10-25) - route-sets handling in command-line added. Thanks to Alexandr Turovsky for pointing out. - bug in aggregation documentation fixed. Thanks to Nikolay Shopik. 0.1.16 (2012-01-19) - new option -m : maximum length of accepted prefixes. Suggested by Eugene Demidov, used to discard 'too long prefixes' (like /30-/32) even if they are registered in IRR. By default limit is not set and all prefixes accepted. - documentation redesigned into text/markdown and text/html (manpage supported still). 0.1.15 (2011-07-15) - prefix-set's for Cisco IOS XR now supported too. 0.1.14 (2011-06-18) - Fixed bug in sx_maxsockbuf in rare cases of OS maxsockbuf >2M. Thanks to Andreas Lundin. 0.1.13 (2011-06-14) - never publically released. 0.1.12 (2010-10-08) - Fixed bug preventing AS262144 (that's AS4.0 in asdot) to expand. Thanks to Sergey Matveychuk 0.1.11 (2010-04-19) - Fixed another bug in aggregation (-A) mode, thanks to Dmitry Tejblum. 0.1.10 (2009-06-13) - Fixed bug in aggregation (-A) mode, thanks to Sergey Gonchar. 0.1.9 (2009-03-27) - RIPE changed ASN32 notation to asplain. And RADB does not support asplain indexing (yet?).... Fixed. Thanks to Pavel Gluchouk. 0.1.8 (2008-12-25) - new flag -D for Cisco asdot notation. Cisco behaviour is a bit strange for me, but, well, that's their decision: When the asdot format is enabled as the default, any regular expressions to match 4-byte autonomous system numbers must be written using the asdot format, or else the regular expression match will fail. (c) http://www.cisco.com/en/US/docs/ios/12_0s/release/ntes/120SNEWF.html #wp3521658 (note the URL wrap). 0.1.7 (2008-12-19): - man page. Finally :) - option -h now means not help, but now it can be used to point to alternate IRRD host, like in old bgpq. 0.1.6 (2008-08-08): - maxsockbuf call added, that can help with pipelining of really large as-sets. - new key -M for juniper route-filters, f.e.: bgpq3 -JEM "protocol bgp;\n community no-export" -l PolicyName/TermName will generate term with additional match conditions, like: policy-options { policy-statement PolicyName { term TermName { replace: from { protocol bgp; community no-export; route-filter 10.0.0.0/24 exact; } } } } 0.1.5 (2008-06-02): - route-set's expansion added. Fully functional for IPv4 prefixes, but not for IPv6 - only those prefixes explicitely marked as 'member-of: RS..' will be expanded. This is due to limitation in IRRd. - extended access-lists (Cisco) and route-filters (Juniper) generation is supported now with new -E key. For Cisco ipv6 access-lists is not yet supported. 0.1.4 (2008-05-30): - bugfix for juniper as-path group generation. Thanks to Alexander Shikoff. 0.1.3 (2008-05-20): - aggregation (-A) now supported for Cisco prefix-lists. - pipelining now can be enabled for RIPE-style queries too (ipv6). - more-specific routes (-R len) feature ported from bgpq - pipelining now set by default. -T flag now disables pipelining. - strlcpy.c imported into sources. Not found on Linux :) 0.1.2 (2008-05-19): - final support for asn32, now with correct syntax for Juniper. - experimental 'pipelining' mode (flag -T), much faster when working with big as-set's. - RIPE-style query (-i origin) now requests only route6 objects. 0.1.1 (2008-05-16): - initial support for asn32 added (flag -3). By default it's off, and when bgpq sees 32-bit asn in resolver queue, it either replaces it with AS23456 (in as-path generation mode) or queries radb for prefixes with that origin. Note: for now only JunOS 9.1 can handle asn32, not Cisco IOS.. bgpq3-0.1.36.1/COPYRIGHT000066400000000000000000000025531416330673000142570ustar00rootroot00000000000000/*- * Copyright (c) 2007-2021 Alexandre Snarskii * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * */ bgpq3-0.1.36.1/Makefile.in000066400000000000000000000020261416330673000150240ustar00rootroot00000000000000CC=@CC@ CFLAGS=@CFLAGS@ @DEFS@ -g -Wall -I. LDADD=@LDFLAGS@ @LIBS@ INSTALL=@INSTALL@ prefix = @prefix@ bindir = @bindir@ exec_prefix = @exec_prefix@ datarootdir = @datarootdir@ datadir = @datadir@ infodir = @infodir@ mandir = @mandir@ OBJECTS=bgpq3.o sx_report.o bgpq_expander.o sx_slentry.o bgpq3_printer.o \ sx_prefix.o strlcpy.o sx_maxsockbuf.o SRCS=bgpq3.c sx_report.c bgpq_expander.c sx_slentry.c bgpq3_printer.c \ sx_prefix.c strlcpy.c sx_maxsockbuf.c all: bgpq3 bgpq3: ${OBJECTS} ${CC} ${CFLAGS} -o bgpq3 ${OBJECTS} ${LDADD} .c.o: ${CC} ${CFLAGS} -c $< clean: rm -rf Makefile autom4te.cache bgpq3 config.h config.log config.status rm -rf *.o *.core core.* core install: bgpq3 if test ! -d @bindir@ ; then mkdir -p @bindir@ ; fi ${INSTALL} -c -s -m 755 bgpq3 @bindir@ if test ! -d @prefix@/man/man8 ; then mkdir -p @prefix@/man/man8 ; fi ${INSTALL} -m 644 bgpq3.8 @prefix@/man/man8 depend: makedepend -- $(CFLAGS) -- $(SRCS) bgpq3.html: readme.header README.md cat readme.header README.md | @MARKDOWN@ > bgpq3.html bgpq3-0.1.36.1/README.md000066400000000000000000000340021416330673000142350ustar00rootroot00000000000000NAME ---- `bgpq3` - bgp filtering automation tool SYNOPSIS -------- ``` bgpq3 [-h host[:port]] [-S sources] [-EPz] [-f asn | -F fmt | -G asn | -t] [-2346ABbDdHJjNnpsUX] [-a asn] [-r len] [-R len] [-m max] [-W len] OBJECTS [...] EXCEPT OBJECTS ``` DESCRIPTION ----------- The bgpq3 utility used to generate configuration (prefix-lists, extended access-lists, policy-statement terms and as-path lists) based on RADB data. The options are as follows: #### -2 Allow routes registered for as23456 (transition-as) (default: false) #### -3 Assume that your device is asn32-capable. #### -4 Generate IPv4 prefix/access-lists (default). #### -6 Generate IPv6 prefix/access-lists (IPv4 by default). #### -A Try to aggregate generated filters as much as possible (not all output formats supported). #### -a asn Specify ASN that shall be denied in case of empty prefix-list (OpenBGPD). #### -B Generate output in OpenBGPD format (default: Cisco). #### -b Generate output in BIRD format (default: Cisco). #### -d Enable some debugging output. #### -D Use asdot notation for Cisco as-path access-lists. #### -E Generate extended access-list (Cisco) or policy-statement term using route-filters (Juniper), [ip|ipv6]-prefix-list (Nokia) or prefix-filter (OpenBGPD) #### -f `AS number` Generate input as-path access-list for adjacent as `AS number`. (Use `-f 0` to not enforce first AS) #### -F `fmt` Generate output in user-defined format. #### -G `number` Generate output as-path access-list. #### -H Hyperaggregation (supernets-only) mode. #### -h `host[:port]` Host running IRRD database (default: `whois.radb.net`). #### -J Generate config for Juniper (default: Cisco). #### -j Generate output in JSON format (default: Cisco). #### -m `length` Maximum length of accepted prefixes (default: `32` for IPv4, `128` for IPv6). #### -M `match` Extra match conditions for Juniper route-filters. See the examples section. #### -n Generate config for Nokia SR OS (former Alcatel-Lucent) MD-CLI (default: Cisco) #### -N Generate config for Nokia SR OS (former Alcatel-Lucent) classic CLI (default: Cisco) #### -l `name` `Name` of generated configuration stanza. #### -L `limit` Limit recursion depth when expanding. This slows `bgpq3` a bit, but sometimes is a useful feature to prevent generated filters from growing too big. #### -p Enable use of private ASNs and ASNs used for documentation purpose only (default: disabled). #### -P Generate prefix-list (default behaviour, flag added for backward compatibility only). #### -r `length` Allow more-specific routes with masklen starting with specified length. #### -R `length` Allow more-specific routes up to specified masklen too. (Please, note: objects with prefix-length greater than specified length will be always allowed.) #### -s Generate sequence numbers in IOS-style prefix-lists. #### -S `sources` Use specified database sources only (example: RIPE,APNIC,RADB). #### -t Generate as-sets for OpenBGPD (OpenBSD 6.4+), BIRD and JSON formats. #### -T Disable pipelining. (not recommended) #### -U Generate output in Huawei format (default: Cisco). #### -W `length` Generate as-path strings of a given length maximum (0 for infinity). #### -X Generate config for Cisco IOS XR devices (plain IOS by default). #### -z Generate Juniper route-filter-list (JunOS 16.2+). #### `OBJECTS` `OBJECTS` means networks (in prefix format), autonomous systems, as-sets and route-sets. If multiple objects are specified they will be merged. #### `EXCEPT OBJECTS` You can exclude autonomous sets, as-sets and route-sets found during expansion from future expansion. EXAMPLES -------- Generating named Juniper prefix-filter for `AS20597`: user@host:~>bgpq3 -Jl eltel AS20597 policy-options { replace: prefix-list eltel { 81.9.0.0/20; 81.9.32.0/20; 81.9.96.0/20; 81.222.128.0/20; 81.222.192.0/18; 85.249.8.0/21; 85.249.224.0/19; 89.112.0.0/19; 89.112.4.0/22; 89.112.32.0/19; 89.112.64.0/19; 217.170.64.0/20; 217.170.80.0/20; } } For Cisco we can use aggregation (-A) flag to make this prefix-filter more compact: user@host:~>bgpq3 -Al eltel AS20597 no ip prefix-list eltel ip prefix-list eltel permit 81.9.0.0/20 ip prefix-list eltel permit 81.9.32.0/20 ip prefix-list eltel permit 81.9.96.0/20 ip prefix-list eltel permit 81.222.128.0/20 ip prefix-list eltel permit 81.222.192.0/18 ip prefix-list eltel permit 85.249.8.0/21 ip prefix-list eltel permit 85.249.224.0/19 ip prefix-list eltel permit 89.112.0.0/18 ge 19 le 19 ip prefix-list eltel permit 89.112.4.0/22 ip prefix-list eltel permit 89.112.64.0/19 ip prefix-list eltel permit 217.170.64.0/19 ge 20 le 20 and, as you see, prefixes `89.112.0.0/19` and `89.112.32.0/19` now aggregated into single entry ip prefix-list eltel permit 89.112.0.0/18 ge 19 le 19. Well, for Juniper we can generate even more interesting policy-statement, using `-M `, `-r `, `-R ` and hierarchical names: user@host:~>bgpq3 -AJEl eltel/specifics -r 29 -R 32 -M "community blackhole" AS20597 policy-options { policy-statement eltel { term specifics { replace: from { community blackhole; route-filter 81.9.0.0/20 prefix-length-range /29-/32; route-filter 81.9.32.0/20 prefix-length-range /29-/32; route-filter 81.9.96.0/20 prefix-length-range /29-/32; route-filter 81.222.128.0/20 prefix-length-range /29-/32; route-filter 81.222.192.0/18 prefix-length-range /29-/32; route-filter 85.249.8.0/21 prefix-length-range /29-/32; route-filter 85.249.224.0/19 prefix-length-range /29-/32; route-filter 89.112.0.0/17 prefix-length-range /29-/32; route-filter 217.170.64.0/19 prefix-length-range /29-/32; } } } } generated policy-option term now allows more-specific routes in range /29 - /32 for eltel networks if they marked with community 'blackhole' (defined elsewhere in configuration). Of course, `bgpq3` supports IPv6 (-6): user@host:~>bgpq3 -6l as-retn-6 AS-RETN6 no ipv6 prefix-list as-retn-6 ipv6 prefix-list as-retn-6 permit 2001:7fb:fe00::/48 ipv6 prefix-list as-retn-6 permit 2001:7fb:fe01::/48 [....] and ASN32 user@host:~>bgpq3 -J3f 112 AS-SPACENET policy-options { replace: as-path-group NN { as-path a0 "^112(112)*$"; as-path a1 "^112(.)*(1898|5539|8495|8763|8878|12136|12931|15909)$"; as-path a2 "^112(.)*(21358|23456|23600|24151|25152|31529|34127|34906)$"; as-path a3 "^112(.)*(35052|41720|43628|44450|196611)$"; } } see `AS196611` in the end of the list ? That's `AS3.3` in 'asplain' notation. If your router does not support ASN32 (yet) you should not use switch -3, and the result will be next: user@host:~>bgpq3 -f 112 AS-SPACENET no ip as-path access-list NN ip as-path access-list NN permit ^112( 112)*$ ip as-path access-list NN permit ^112( [0-9]+)* (1898|5539|8495|8763)$ ip as-path access-list NN permit ^112( [0-9]+)* (8878|12136|12931|15909)$ ip as-path access-list NN permit ^112( [0-9]+)* (21358|23456|23600|24151)$ ip as-path access-list NN permit ^112( [0-9]+)* (25152|31529|34127|34906)$ ip as-path access-list NN permit ^112( [0-9]+)* (35052|41720|43628|44450)$ `AS196611` is no more in the list, however, `AS23456` (transition AS) would have been added to list if it were not present. USER-DEFINED FORMAT ------------------- If you want to generate configuration not for routers, but for some other programs/systems, you may use user-defined formatting, like in example below: user@host:~>bgpq3 -F "ipfw add pass all from %n/%l to any\\n" as3254 ipfw add pass all from 62.244.0.0/18 to any ipfw add pass all from 91.219.29.0/24 to any ipfw add pass all from 91.219.30.0/24 to any ipfw add pass all from 193.193.192.0/19 to any Recognized format characters: '%n' - network, '%l' - mask length, '%N' - object name, '%m' - object mask and '%i' - inversed mask. Recognized escape characters: '\n' - new line, '\t' - tabulation. Please note that no new lines inserted automatically after each sentence, you have to add them into format string manually, elsewhere output will be in one line (sometimes it makes sense): user@host:~>bgpq3 -6F "%n/%l; " as-eltel 2001:1b00::/32; 2620:4f:8000::/48; 2a04:bac0::/29; 2a05:3a80::/48; NOTES ON 'Database Sources' (-S) flag ------------------------------------- By default `bgpq3` trusts to data from all databases mirrored into RADB. Unfortunately, not all these databases are equal in how much can we trust their data. RIR maintained databases (AFRINIC,ARIN,APNIC and RIPE) shall be trusted more than the others because they are indeed have the knowledge about which address space allocated to this or that ASn, other databases lack this knowledge and can (and, actually, do) contain some stale data: noone but RIRs care to remove outdated route-objects when address space revoked from one ASn and allocated to another. In order to keep their filters both compact and actual, `bgpq3` users are encouraged to use '-S' flag to limit database sources to only ones they trust. General recommendations: * use minimal set of RIR databases (only those in which you and your customers have registered route-objects). Keep RIR of your home region first in the list. * use non-RIR databases only when operating in LACNIC region (for some reason LACNIC does not export their data to RADB) or when you are unable to make your customers maintain their data in RIR databases. * avoid using RIPE-NONAUTH as trusted source: these records were created in RIPE database but for address space allocated to different RIR, so RIPE had no chance to check validity of this route. Note on source ordering: order matters. When expanding as-sets, `IRRd` sequentally checks all sources for matching object and stops on first found entry. So, in case when as-set registered in multiple databases (with different content), generated filters may differ depending on source order: snar@host:~>bgpq3 -S RIPE,RADB as-space no ip prefix-list NN ip prefix-list NN permit 195.190.32.0/19 snar@host:~>bgpq3 -S RADB,RIPE as-space no ip prefix-list NN ip prefix-list NN permit 45.4.4.0/22 ip prefix-list NN permit 45.4.132.0/22 ip prefix-list NN permit 45.6.128.0/22 ip prefix-list NN permit 45.65.184.0/22 [...] Example: as we are operating mostly in Europe and APAC, we generate most of our filters with '-S RIPE,APNIC,RADB'. Note on aggregation and hyperaggregation ---------------------------------------- First, definition: aggregation is a transformation of prefix set into compact representation that is exactly the same as initial set, i.e., no prefix that is not present in original set will not be allowed by aggregated set and no prefix that is present in original set will not be denied by aggregated set. Example: prefixes 10.0.0.0/24 10.0.1.0/24 10.0.0.0/22 can be aggregated in two route filters: ./bgpq3 -JEA 10.0.0.0/24 10.0.1.0/24 10.0.0.0/22 policy-options { policy-statement NN { replace: from { route-filter 10.0.0.0/22 exact; route-filter 10.0.0.0/23 prefix-length-range /24-/24; } } } and this policy will allow specified prefixes only. While aggregation is the most correct way to build filters used in routing policies, sometimes it makes sense to build more relaxed prefix-filters: for example, when generated filters will be used to traffic filtering it makes no sense to include second line as it is already covered by first one. So, in this case we can use 'hyperaggregation' (supernets-only) mode to include only supernets in output: ./bgpq3 -JH 10.0.0.0/24 10.0.1.0/24 10.0.0.0/22 policy-options { replace: prefix-list NN { 10.0.0.0/22; } } from the perspective of traffic filtering it is correct and more effective than just aggregation. DIAGNOSTICS ----------- When everything is OK, `bgpq3` generates result to standard output and exits with status == 0. In case of errors they are printed to stderr and program exits with non-zero status. NOTES ON ULTRA-LARGE PREFIX-LISTS --------------------------------- To improve `bgpq3` performance when expanding extra-large AS-SETs you shall tune OS settings to enlarge TCP send buffer. FreeBSD can be tuned in the following way: sysctl -w net.inet.tcp.sendbuf_max=2097152 Linux can be tuned in the following way: sysctl -w net.ipv4.tcp_window_scaling=1 sysctl -w net.core.rmem_max=2097152 sysctl -w net.core.wmem_max=2097152 sysctl -w net.ipv4.tcp_rmem="4096 87380 2097152" sysctl -w net.ipv4.tcp_wmem="4096 65536 2097152" Please note that generated prefix-lists may not fit your router's limitations. For example, JunOS supports only 85,325 prefixes in each prefix-list [4](https://www.juniper.net/documentation/us/en/software/junos/routing-policy/topics/ref/statement/prefix-list-edit-policy-options.html). According to field experience [5](https://mailman.nanog.org/pipermail/nanog/2021-August/214509.html) IOS-XR prefix-sets are limited to 300001 entries. SEE ALSO -------- 1. [Routing Arbiter](http://www.radb.net/) 2. [draft-michaelson-4byte-as-representation-05](https://tools.ietf.org/html/draft-michaelson-4byte-as-representation-05) for information on 'asdot' and 'asplain' notations. 3. [Cisco documentation](http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6554/ps6599/data_sheet_C78-521821.html) for information on Cisco implementation of ASN32. 4. [JunOS prefix-lists limitation](https://www.juniper.net/documentation/us/en/software/junos/routing-policy/topics/ref/statement/prefix-list-edit-policy-options.html) 5. [IOS-XR prefix-set limitation](https://mailman.nanog.org/pipermail/nanog/2021-August/214509.html) AUTHOR ------ Alexandre Snarskii [snar@snar.spb.ru](mailto:snar@snar.spb.ru) Program Homepage ---------------- [http://snar.spb.ru/prog/bgpq3/](http://snar.spb.ru/prog/bgpq3/) bgpq3-0.1.36.1/bgpq3.8000066400000000000000000000230231416330673000140640ustar00rootroot00000000000000.\" Copyright (c) 2007-2021 Alexandre Snarskii .\" 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. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. .\" .Dd Oct 27, 2008 .Dt BGPQ3 8 .Os .Sh NAME .Nm bgpq3 .Nd "bgp filtering automation tool" .Sh SYNOPSIS .Nm .Op Fl h Ar host[:port] .Op Fl S Ar sources .Op Fl EPz .Oo .Fl f Ar asn | .Fl F Ar fmt | .Fl G Ar asn .Fl t .Oc .Op Fl 2346ABbDdJjNnsXU .Op Fl a Ar asn .Op Fl r Ar len .Op Fl R Ar len .Op Fl m Ar max .Op Fl W Ar len .Ar OBJECTS .Op "..." .Op EXCEPT OBJECTS .Sh DESCRIPTION The .Nm utility used to generate configurations (prefix-lists, extended access-lists, policy-statement terms and as-path lists) based on RADB data. .Pp The options are as follows: .Bl -tag -width Ds .It Fl 2 accept routes registered for as23456 (transition-as) (default: false) .It Fl 3 assume that your device is asn32-safe. .It Fl 4 generate IPv4 prefix/access-lists (default). .It Fl 6 generate IPv6 prefix/access-lists (IPv4 by default). .It Fl A try to aggregate prefix-lists as much as possible (not all output formats supported). .It Fl a Ar asn specify what asn shall be denied in case of empty prefix-list (OpenBGPD) .It Fl B generate output in OpenBGPD format (default: Cisco) .It Fl b generate output in BIRD format (default: Cisco). .It Fl d enable some debugging output. .It Fl D use asdot notation for Cisco as-path access-lists. .It Fl E generate extended access-list (Cisco), policy-statement term using route-filters (Juniper), [ip|ipv6]-prefix-list (Nokia) or prefix-sets (OpenBGPd). .It Fl f Ar number generate input as-path access-list (use 0 to not enforce first AS) .It Fl F Ar fmt generate output in user-defined format. .It Fl G Ar number generate output as-path access-list. .It Fl h Ar host[:port] host running IRRD database (default: whois.radb.net). .It Fl J generate config for Juniper (default: Cisco). .It Fl j generate output in JSON format (default: Cisco). .It Fl l Ar name name of generated entry. .It Fl L Ar limit limit recursion depth when expanding as-sets. .It Fl m Ar len maximum prefix-length of accepted prefixes (default: 32 for IPv4 and 128 for IPv6). .It Fl M Ar match extra match conditions for Juniper route-filters. .It Fl n generate config for Nokia SR OS MD-CLI (Cisco IOS by default) .It Fl N generate config for Nokia SR OS classic CLI (Cisco IOS by default). .It Fl p accept routes registered for private ASNs (default: disabled) .It Fl P generate prefix-list (default, backward compatibility). .It Fl r Ar len allow more specific routes starting with specified masklen too. .It Fl R Ar len allow more specific routes up to specified masklen too. .It Fl s generate sequence numbers in IOS-style prefix-lists. .It Fl S Ar sources use specified sources only (recommended: RADB,RIPE,APNIC). .It Fl t generate as-sets for OpenBGPD (OpenBSD 6.4+), BIRD and JSON formats. .It Fl T disable pipelining. .It Fl W Ar len generate as-path strings of no more than len items (use 0 for inifinity). .It Fl U generate config for Huawei devices (Cisco IOS by default) .It Fl X generate config for Cisco IOS XR devices (plain IOS by default). .It Fl z generate route-filter-lists (JunOS 16.2+). .It Ar OBJECTS means networks (in prefix format), autonomous systems, as-sets and route-sets. .It Ar EXCEPT OBJECTS those objects will be excluded from expansion. .El .Sh EXAMPLES Generating named juniper prefix-filter for AS20597: .nf .RS ~>bgpq3 -Jl eltel AS20597 policy-options { replace: prefix-list eltel { 81.9.0.0/20; 81.9.32.0/20; 81.9.96.0/20; 81.222.128.0/20; 81.222.192.0/18; 85.249.8.0/21; 85.249.224.0/19; 89.112.0.0/19; 89.112.4.0/22; 89.112.32.0/19; 89.112.64.0/19; 217.170.64.0/20; 217.170.80.0/20; } } .RE .fi .Pp For Cisco we can use aggregation (-A) flag to make this prefix-filter more compact: .nf .RS ~>bgpq3 -Al eltel AS20597 no ip prefix-list eltel ip prefix-list eltel permit 81.9.0.0/20 ip prefix-list eltel permit 81.9.32.0/20 ip prefix-list eltel permit 81.9.96.0/20 ip prefix-list eltel permit 81.222.128.0/20 ip prefix-list eltel permit 81.222.192.0/18 ip prefix-list eltel permit 85.249.8.0/21 ip prefix-list eltel permit 85.249.224.0/19 ip prefix-list eltel permit 89.112.0.0/18 ge 19 le 19 ip prefix-list eltel permit 89.112.4.0/22 ip prefix-list eltel permit 89.112.64.0/19 ip prefix-list eltel permit 217.170.64.0/19 ge 20 le 20 .RE .fi - you see, prefixes 89.112.0.0/19 and 89.112.32.0/19 now aggregated into single entry 89.112.0.0/18 ge 19 le 19. .Pp Well, for Juniper we can generate even more interesting policy-options, using -M , -R and hierarchical names: .nf .RS ~>bgpq3 -AJEl eltel/specifics -r 29 -R 32 -M "community blackhole" AS20597 policy-options { policy-statement eltel { term specifics { replace: from { community blackhole; route-filter 81.9.0.0/20 prefix-length-range /29-/32; route-filter 81.9.32.0/20 prefix-length-range /29-/32; route-filter 81.9.96.0/20 prefix-length-range /29-/32; route-filter 81.222.128.0/20 prefix-length-range /29-/32; route-filter 81.222.192.0/18 prefix-length-range /29-/32; route-filter 85.249.8.0/21 prefix-length-range /29-/32; route-filter 85.249.224.0/19 prefix-length-range /29-/32; route-filter 89.112.0.0/17 prefix-length-range /29-/32; route-filter 217.170.64.0/19 prefix-length-range /29-/32; } } } } .RE .fi generated policy-option term now allows all specifics with prefix-length between /29 and /32 for eltel networks if they match with special community blackhole (defined elsewhere in configuration). .Pp Of course, this version supports IPv6 (-6): .nf .RS ~>bgpq3 -6l as-retn-6 AS-RETN6 no ipv6 prefix-list as-retn-6 ipv6 prefix-list as-retn-6 permit 2001:7fb:fe00::/48 ipv6 prefix-list as-retn-6 permit 2001:7fb:fe01::/48 [....] .RE .fi and support for ASN 32 is also here .nf .RS ~>bgpq3 -J3f 112 AS-SPACENET policy-options { replace: as-path-group NN { as-path a0 "^112(112)*$"; as-path a1 "^112(.)*(1898|5539|8495|8763|8878|12136|12931|15909)$"; as-path a2 "^112(.)*(21358|23456|23600|24151|25152|31529|34127|34906)$"; as-path a3 "^112(.)*(35052|41720|43628|44450|196611)$"; } } .RE .fi see AS196611 in the end of the list ? That's AS3.3 in 'asplain' notation. .Pp For non-ASN32 capable routers you should not use switch -3, and the result will be next: .nf .RS ~>bgpq3 -f 112 AS-SPACENET no ip as-path access-list NN ip as-path access-list NN permit ^112(_112)*$ ip as-path access-list NN permit ^112(_[0-9]+)*_(1898|5539|8495|8763)$ ip as-path access-list NN permit ^112(_[0-9]+)*_(8878|12136|12931|15909)$ ip as-path access-list NN permit ^112(_[0-9]+)*_(21358|23456|23600|24151)$ ip as-path access-list NN permit ^112(_[0-9]+)*_(25152|31529|34127|34906)$ ip as-path access-list NN permit ^112(_[0-9]+)*_(35052|41720|43628|44450)$ .RE .fi .Pp AS196611 is no more in the list, however, AS23456 (transition AS) would be added to list if it were not present. .Sh USER-DEFINED FORMAT If you want to generate configuration not for routers, but for some other programs/systems, you may use user-defined formatting, like in example below: .nf .RS user@host:~>bgpq3 -F "ipfw add pass all from %n/%l to any\\n" as3254 ipfw add pass all from 62.244.0.0/18 to any ipfw add pass all from 91.219.29.0/24 to any ipfw add pass all from 91.219.30.0/24 to any ipfw add pass all from 193.193.192.0/19 to any .RE .fi .Pp Recognized format characters: %n - network, %l - mask length, %N - object name, %m - object mask and %i - inversed mask. Recognized escape characters: \\n - new line, \\t - tabulation. Please note that no new lines inserted automatically after each sentence, you have to add them into format string manually, elsewhere output will be in one line (sometimes it makes sense): .nf .RS user@host:~>bgpq3 -6F "%n/%l; " as-eltel 2001:1b00::/32; 2620:4f:8000::/48; 2a04:bac0::/29; 2a05:3a80::/48; .RE .fi .Sh DIAGNOSTICS When everything is OK, .Nm generates access-list to standard output and exits with status == 0. In case of errors they are printed to stderr and program exits with non-zero status. .Sh SEE ALSO .Sy http://www.radb.net/ Routing Arbiter project .Sy http://tools.ietf.org/html/draft-michaelson-4byte-as-representation-05 for information on 'asdot' and 'asplain' notations. .Sy http://www.cisco.com/en/US/docs/ios/12_0s/release/ntes/120SNEWF.html#wp3521658 for information on Cisco implementation of ASN32. .Sh AUTHOR .An Alexandre Snarskii Aq snar@snar.spb.ru bgpq3-0.1.36.1/bgpq3.c000066400000000000000000000475771416330673000141630ustar00rootroot00000000000000#if HAVE_CONFIG_H #include #endif #include #include #include #include #include #include #include #include #include #include #include "bgpq3.h" #include "sx_report.h" extern int debug_expander; extern int debug_aggregation; extern int pipelining; extern int expand_as23456; extern int expand_special_asn; int usage(int ecode) { printf("\nUsage: bgpq3 [-h host[:port]] [-S sources] [-P|E|G |f |t]" " [-2346ABbDdHJjNnwXz] [-R len] ...\n"); printf(" -2 : allow routes belonging to as23456 (transition-as) " "(default: false)\n"); printf(" -3 : assume that your device is asn32-safe\n"); printf(" -4 : generate IPv4 prefix-lists (default)\n"); printf(" -6 : generate IPv6 prefix-lists (IPv4 by default)\n"); printf(" -A : try to aggregate prefix-lists/route-filters\n"); printf(" -B : generate OpenBGPD output (Cisco IOS by default)\n"); printf(" -b : generate BIRD output (Cisco IOS by default)\n"); printf(" -D : use asdot notation in as-path (Cisco only)\n"); printf(" -d : generate some debugging output\n"); printf(" -E : generate extended access-list(Cisco), " "route-filter(Juniper)\n" " [ip|ipv6]-prefix-list (Nokia) or prefix-set (OpenBGPD)" "\n"); printf(" -F fmt : generate output in user-defined format\n"); printf(" -f number : generate input as-path access-list (use 0 to not " "enforce first AS)\n"); printf(" -G number : generate output as-path access-list\n"); printf(" -H : hyper-aggregation (supernets only) mode\n"); printf(" -h host : host running IRRD software (whois.radb.net by " "default)\n" " (use host:port to specify alternate port)\n"); printf(" -J : generate config for JunOS (Cisco IOS by default)\n"); printf(" -j : generate JSON output (Cisco IOS by default)\n"); printf(" -M match : extra match conditions for JunOS route-filters\n"); printf(" -m len : maximum prefix length (default: 32 for IPv4, " "128 for IPv6)\n"); printf(" -L depth : limit recursion depth (default: unlimited)\n"), printf(" -l name : use specified name for generated access/prefix/.." " list\n"); printf(" -N : generate config for Nokia SR OS classic CLI " "(Cisco IOS by default)\n"); printf(" -n : generate config for Nokia SR OS MD-CLI (Cisco IOS " "by default)\n"); printf(" -P : generate prefix-list (default, just for backward" " compatibility)\n"); printf(" -R len : allow more specific routes up to specified masklen\n"); printf(" -r len : allow more specific routes from masklen specified\n"); printf(" -S sources: use only specified sources (recommended:" " RADB,RIPE,APNIC)\n"); printf(" -s : generate sequence numbers in prefix-lists (IOS only)\n"); printf(" -T : disable pipelining (experimental, faster mode)\n"); printf(" -t : generate as-sets for OpenBGPD (OpenBSD 6.4+), BIRD " "and JSON formats\n"); printf(" -U : generate config for Huawei (Cisco IOS by default)\n"); printf(" -W len : specify max-entries on as-path line (use 0 for " "infinity)\n"); printf(" -w : 'validate' AS numbers: accept only ones with " "registered routes\n"); printf(" -X : generate config for IOS XR (Cisco IOS by default)\n"); printf("\n" PACKAGE_NAME " version: " PACKAGE_VERSION "\n"); printf("Copyright(c) Alexandre Snarskii 2007-2021\n\n"); exit(ecode); }; void exclusive() { fprintf(stderr,"-E, -f , -G , -P and -t are mutually " "exclusive\n"); exit(1); }; void vendor_exclusive() { fprintf(stderr, "-b (BIRD), -B (OpenBGPD), -F (formatted), -J (JunOS), " "-j (JSON), -N (Nokia SR OS classic), -n (Nokia SR OS MD-CLI), " "-U (Huawei) and -X (IOS XR) options are mutually exclusive\n"); exit(1); }; int parseasnumber(struct bgpq_expander* expander, char* optarg, int zero) { char* eon=NULL; expander->asnumber=strtoul(optarg,&eon,10); if((!zero && expander->asnumber<1) || expander->asnumber>(65535ul*65535)) { sx_report(SX_FATAL,"Invalid AS number: %s\n", optarg); exit(1); }; if(eon && *eon=='.') { /* -f 3.3, for example */ uint32_t loas=strtoul(eon+1,&eon,10); if(expander->asnumber>65535) { /* should prevent incorrect numbers like 65537.1 */ sx_report(SX_FATAL,"Invalid AS number: %s\n", optarg); exit(1); }; if(loas<1 || loas>65535) { sx_report(SX_FATAL,"Invalid AS number: %s\n", optarg); exit(1); }; if(eon && *eon) { sx_report(SX_FATAL,"Invalid symbol in AS number: %c (%s)\n", *eon, optarg); exit(1); }; expander->asnumber=(expander->asnumber<<16)+loas; } else if(eon && *eon) { sx_report(SX_FATAL,"Invalid symbol in AS number: %c (%s)\n", *eon, optarg); exit(1); }; return 0; }; int main(int argc, char* argv[]) { int c; struct bgpq_expander expander; int af=AF_INET, selectedipv4 = 0, exceptmode = 0; int widthSet=0, aggregate=0, refine=0, refineLow=0, hyperaggregate=0; unsigned long maxlen=0; bgpq_expander_init(&expander,af); if (getenv("IRRD_SOURCES")) expander.sources=getenv("IRRD_SOURCES"); while((c=getopt(argc,argv,"2346a:AbBdDEF:HS:jJf:l:L:m:M:NnW:Ppr:R:G:tTh:UwXsz")) !=EOF) { switch(c) { case '2': expand_as23456=1; break; case '3': expander.asn32=1; break; case '4': /* do nothing, expander already configured for IPv4 */ if (expander.family == AF_INET6) { sx_report(SX_FATAL, "-4 and -6 are mutually exclusive\n"); exit(1); }; selectedipv4=1; break; case '6': if (selectedipv4) { sx_report(SX_FATAL, "-4 and -6 are mutually exclusive\n"); exit(1); }; af=AF_INET6; expander.family=AF_INET6; expander.tree->family=AF_INET6; break; case 'a': parseasnumber(&expander,optarg,0); break; case 'A': if(hyperaggregate) { sx_report(SX_FATAL, "-A and -H are mutually exclusive\n"); exit(1); }; if(aggregate) debug_aggregation++; aggregate=1; break; case 'b': if(expander.vendor) vendor_exclusive(); expander.vendor=V_BIRD; break; case 'B': if(expander.vendor) vendor_exclusive(); expander.vendor=V_OPENBGPD; expander.asn32=1; break; case 'D': expander.asdot=1; break; case 'd': debug_expander++; break; case 'E': if(expander.generation) exclusive(); expander.generation=T_EACL; break; case 'F': if(expander.vendor) exclusive(); expander.vendor=V_FORMAT; expander.format=optarg; break; case 'f': if(expander.generation) exclusive(); expander.generation=T_ASPATH; parseasnumber(&expander,optarg,1); break; case 'G': if(expander.generation) exclusive(); expander.generation=T_OASPATH; parseasnumber(&expander,optarg,0); break; case 'H': if(aggregate) { sx_report(SX_FATAL, "-A and -H are mutually exclusive\n"); exit(1); }; hyperaggregate=1; break; case 'h': { char* d=strchr(optarg, ':'); expander.server=optarg; if(d) { *d=0; expander.port=d+1; }; break; }; case 'J': if(expander.vendor) vendor_exclusive(); expander.vendor=V_JUNIPER; break; case 'j': if(expander.vendor) vendor_exclusive(); expander.vendor=V_JSON; break; case 'p': expand_special_asn=1; break; case 'P': if(expander.generation) exclusive(); expander.generation=T_PREFIXLIST; break; case 'r': refineLow=strtoul(optarg,NULL,10); if(!refineLow) { sx_report(SX_FATAL,"Invalid refineLow value: %s\n", optarg); exit(1); }; break; case 'R': refine=strtoul(optarg,NULL,10); if(!refine) { sx_report(SX_FATAL,"Invalid refine length: %s\n", optarg); exit(1); }; break; case 'l': expander.name=optarg; break; case 'L': expander.maxdepth=strtol(optarg, NULL, 10); if (expander.maxdepth < 1) { sx_report(SX_FATAL, "Invalid maximum recursion (-L): %s\n", optarg); exit(1); }; break; case 'm': maxlen=strtoul(optarg, NULL, 10); if (!maxlen) { sx_report(SX_FATAL, "Invalid maxlen (-m): %s\n", optarg); exit(1); }; break; case 'M': { char* c, *d; expander.match=strdup(optarg); c=d=expander.match; while(*c) { if(*c=='\\') { if(*(c+1)=='n') { *d='\n'; d++; c+=2; } else if(*(c+1)=='r') { *d='\r'; d++; c+=2; } else if(*(c+1)=='t') { *d='\t'; d++; c+=2; } else if(*(c+1)=='\\') { *d='\\'; d++; c+=2; } else { sx_report(SX_FATAL, "Unsupported escape \%c (0x%2.2x) " "in '%s'\n", isprint(*c)?*c:20, *c, optarg); exit(1); }; } else { if(c!=d) { *d=*c; }; d++; c++; }; }; *d=0; }; break; case 'N': if(expander.vendor) vendor_exclusive(); expander.vendor=V_NOKIA; break; case 'n': if(expander.vendor) vendor_exclusive(); expander.vendor=V_NOKIA_MD; break; case 't': if(expander.generation) exclusive(); expander.generation=T_ASSET; break; case 'T': pipelining=0; break; case 's': expander.sequence=1; break; case 'S': expander.sources=optarg; break; case 'U': if(expander.vendor) vendor_exclusive(); expander.vendor=V_HUAWEI; break; case 'W': expander.aswidth=atoi(optarg); if(expander.aswidth<0) { sx_report(SX_FATAL,"Invalid as-width: %s\n", optarg); exit(1); }; widthSet=1; break; case 'w': expander.validate_asns=1; break; case 'X': if(expander.vendor) vendor_exclusive(); expander.vendor=V_CISCO_XR; break; case 'z': if(expander.generation) exclusive(); expander.generation=T_ROUTE_FILTER_LIST; break; default : usage(1); }; }; argc-=optind; argv+=optind; if(!widthSet) { if(expander.generation==T_ASPATH) { if(expander.vendor==V_CISCO) { expander.aswidth=4; } else if(expander.vendor==V_CISCO_XR) { expander.aswidth=6; } else if(expander.vendor==V_JUNIPER) { expander.aswidth=8; } else if(expander.vendor==V_BIRD) { expander.aswidth=10; } else if(expander.vendor==V_NOKIA || expander.vendor==V_NOKIA_MD) { expander.aswidth=8; }; } else if(expander.generation==T_OASPATH) { if(expander.vendor==V_CISCO) { expander.aswidth=5; } else if(expander.vendor==V_CISCO_XR) { expander.aswidth=7; } else if(expander.vendor==V_JUNIPER) { expander.aswidth=8; } else if(expander.vendor==V_NOKIA || expander.vendor==V_NOKIA_MD) { expander.aswidth=8; }; }; }; if(!expander.generation) { expander.generation=T_PREFIXLIST; }; if(expander.vendor==V_CISCO_XR && expander.generation!=T_PREFIXLIST && expander.generation!=T_ASPATH && expander.generation!=T_OASPATH) { sx_report(SX_FATAL, "Sorry, only prefix-sets and as-paths " "supported for IOS XR\n"); }; if(expander.vendor==V_BIRD && expander.generation!=T_PREFIXLIST && expander.generation!=T_ASPATH && expander.generation!=T_ASSET) { sx_report(SX_FATAL, "Sorry, only prefix-lists and as-paths/as-sets " "supported for BIRD output\n"); }; if(expander.vendor==V_JSON && expander.generation!=T_PREFIXLIST && expander.generation!=T_ASPATH && expander.generation!=T_ASSET) { sx_report(SX_FATAL, "Sorry, only prefix-lists and as-paths/as-sets " "supported for JSON output\n"); }; if(expander.vendor==V_FORMAT && expander.generation!=T_PREFIXLIST) sx_report(SX_FATAL, "Sorry, only prefix-lists supported in formatted " "output\n"); if(expander.vendor==V_FORMAT && (refine || refineLow)) { sx_report(SX_FATAL, "Sorry, formatted output (-F ) in not " "compatible with -R/-r options\n"); exit(1); }; if(expander.vendor==V_HUAWEI && expander.generation!=T_ASPATH && expander.generation!=T_OASPATH && expander.generation != T_PREFIXLIST) sx_report(SX_FATAL, "Sorry, only as-paths and prefix-lists supported " "for Huawei output\n"); if(expander.generation==T_ROUTE_FILTER_LIST && expander.vendor!=V_JUNIPER) { sx_report(SX_FATAL, "Route-filter-lists (-z) supported for Juniper (-J)" " output only\n"); }; if(expander.generation==T_ASSET && expander.vendor!=V_JSON && expander.vendor!=V_OPENBGPD && expander.vendor!=V_BIRD) { sx_report(SX_FATAL, "As-Sets (-t) supported for JSON (-j), OpenBGPD " "(-B) and BIRD (-b) output only\n"); }; if(expander.asdot && expander.vendor!=V_CISCO) { sx_report(SX_FATAL,"asdot notation supported only for Cisco, " "other formats use asplain only\n"); }; if(!expander.asn32 && expander.asnumber>65535) { expander.asnumber=23456; }; if(aggregate && expander.vendor==V_JUNIPER && expander.generation==T_PREFIXLIST) { sx_report(SX_FATAL, "Sorry, aggregation (-A) does not work in" " Juniper prefix-lists\nYou can try route-filters (-E) " "or route-filter-lists (-z) instead of prefix-lists " "(-P, default)\n"); exit(1); }; if(aggregate && expander.vendor==V_FORMAT) { sx_report(SX_FATAL, "Sorry, aggregation (-A) is not compatible with " "formatted output (-F )\n"); exit(1); }; if(aggregate && (expander.vendor==V_NOKIA_MD || expander.vendor==V_NOKIA) && expander.generation!=T_PREFIXLIST) { sx_report(SX_FATAL, "Sorry, aggregation (-A) is not supported with " "ip-prefix-lists (-E) on Nokia. You can try prefix-lists (-P) " "instead\n"); exit(1); }; if(refine && (expander.vendor==V_NOKIA_MD || expander.vendor==V_NOKIA) && expander.generation!=T_PREFIXLIST) { sx_report(SX_FATAL, "Sorry, more-specifics (-R) is not supported with " "ip-prefix-lists (-E) on Nokia. You can try prefix-lists (-P) " "instead\n"); exit(1); }; if(refineLow && (expander.vendor==V_NOKIA_MD || expander.vendor==V_NOKIA) && expander.generation!=T_PREFIXLIST) { sx_report(SX_FATAL, "Sorry, more-specifics (-r) is not supported with " "ip-prefix-lists (-E) on Nokia. You can try prefix-lists (-P) " "instead\n"); exit(1); }; if(aggregate && expander.generation refine) { sx_report(SX_FATAL, "Incompatible values for -r %u and -R %u\n", refineLow, refine); }; if(refine || refineLow) { if(expander.family==AF_INET6 && refine>128) { sx_report(SX_FATAL, "Invalid value for refine(-R): %u (1-128 for" " IPv6)\n", refine); } else if(expander.family==AF_INET6 && refineLow>128) { sx_report(SX_FATAL, "Invalid value for refineLow(-r): %u (1-128 for" " IPv6)\n", refineLow); } else if(expander.family==AF_INET && refine>32) { sx_report(SX_FATAL, "Invalid value for refine(-R): %u (1-32 for" " IPv4)\n", refine); } else if(expander.family==AF_INET && refineLow>32) { sx_report(SX_FATAL, "Invalid value for refineLow(-r): %u (1-32 for" " IPv4)\n", refineLow); }; if(expander.vendor==V_JUNIPER && expander.generation==T_PREFIXLIST) { if(refine) { sx_report(SX_FATAL, "Sorry, more-specific filters (-R %u) " "is not supported for Juniper prefix-lists.\n" "Use router-filters (-E) or route-filter-lists (-z) " "instead\n", refine); } else { sx_report(SX_FATAL, "Sorry, more-specific filters (-r %u) " "is not supported for Juniper prefix-lists.\n" "Use route-filters (-E) or route-filter-lists (-z) " "instead\n", refineLow); }; }; if(expander.generation128) || (expander.family==AF_INET && maxlen>32)) { sx_report(SX_FATAL, "Invalid value for max-prefixlen: %lu (1-128 " "for IPv6, 1-32 for IPv4)\n", maxlen); exit(1); } else if((expander.family==AF_INET6 && maxlen<128) || (expander.family==AF_INET && maxlen<32)) { /* inet6/128 and inet4/32 does not make sense - all routes will * be accepted, so save some CPU cycles :) */ expander.maxlen = maxlen; }; } else if (expander.family==AF_INET) { expander.maxlen = 32; } else if (expander.family==AF_INET6) { expander.maxlen = 128; }; if(expander.generation==T_EACL && expander.vendor==V_CISCO && expander.family==AF_INET6) { sx_report(SX_FATAL,"Sorry, ipv6 access-lists not supported for Cisco" " yet.\n"); }; if(expander.match != NULL && (expander.vendor != V_JUNIPER || expander.generation != T_EACL)) { sx_report(SX_FATAL, "Sorry, extra match conditions (-M) can be used " "only with Juniper route-filters\n"); }; if((expander.generation==T_ASPATH || expander.generation==T_OASPATH) && af != AF_INET && !expander.validate_asns) { sx_report(SX_FATAL, "Sorry, -6 makes no sense with as-path (-f/-G) " "generation\n"); }; if (expander.validate_asns && expander.generation != T_ASPATH && expander.generation != T_OASPATH) { sx_report(SX_FATAL, "Sorry, -w makes sense only for as-path (-f/-G) " "generation\n"); }; if(expander.generation==T_ASPATH && expander.asnumber==0 && (expander.vendor==V_OPENBGPD)) { sx_report(SX_FATAL, "Sorry, -f 0 makes no sense with OpenBGPD\n"); }; if(!argv[0]) usage(1); while(argv[0]) { if(!strcmp(argv[0], "EXCEPT")) { exceptmode = 1; } else if (exceptmode) { bgpq_expander_add_stop(&expander,argv[0]); } else if(!strncasecmp(argv[0],"AS-",3)) { bgpq_expander_add_asset(&expander,argv[0]); } else if(!strncasecmp(argv[0],"RS-",3)) { bgpq_expander_add_rset(&expander,argv[0]); } else if(!strncasecmp(argv[0],"AS",2)) { char* c; if((c=strchr(argv[0],':'))) { if(!strncasecmp(c+1,"AS-",3)) { bgpq_expander_add_asset(&expander,argv[0]); } else if(!strncasecmp(c+1,"RS-",3)) { bgpq_expander_add_rset(&expander,argv[0]); } else { SX_DEBUG(debug_expander,"Unknown sub-as object %s\n", argv[0]); }; } else { bgpq_expander_add_as(&expander,argv[0]); }; } else { char* c = strchr(argv[0], '^'); if (!c && !bgpq_expander_add_prefix(&expander,argv[0])) { sx_report(SX_ERROR, "Unable to add prefix %s (bad prefix or " "address-family)\n", argv[0]); exit(1); } else if (c && !bgpq_expander_add_prefix_range(&expander,argv[0])){ sx_report(SX_ERROR, "Unable to add prefix-range %s (bad range " "or address-family)\n", argv[0]); exit(1); }; }; argv++; argc--; }; if(!bgpq_expand(&expander)) { exit(1); }; if(refine) sx_radix_tree_refine(expander.tree,refine); if(refineLow) sx_radix_tree_refineLow(expander.tree, refineLow); if(aggregate || hyperaggregate) sx_radix_tree_aggregate(expander.tree); if(hyperaggregate) sx_radix_tree_hyperaggregate(expander.tree); switch(expander.generation) { case T_NONE: sx_report(SX_FATAL,"Unreachable point... call snar\n"); exit(1); case T_ASPATH: bgpq3_print_aspath(stdout,&expander); break; case T_OASPATH: bgpq3_print_oaspath(stdout,&expander); break; case T_ASSET: bgpq3_print_asset(stdout,&expander); break; case T_PREFIXLIST: bgpq3_print_prefixlist(stdout,&expander); break; case T_EACL: bgpq3_print_eacl(stdout,&expander); break; case T_ROUTE_FILTER_LIST: bgpq3_print_route_filter_list(stdout, &expander); break; }; return 0; }; bgpq3-0.1.36.1/bgpq3.h000066400000000000000000000043101416330673000141420ustar00rootroot00000000000000#ifndef BGPQ3_H_ #define BGPQ3_H_ #if HAVE_SYS_QUEUE_H && HAVE_STAILQ_IN_SYS_QUEUE #include #else #include "sys_queue.h" #endif #include "sx_prefix.h" #include "sx_slentry.h" typedef enum { V_CISCO = 0, V_JUNIPER, V_CISCO_XR, V_JSON, V_BIRD, V_OPENBGPD, V_FORMAT, V_NOKIA, V_HUAWEI, V_NOKIA_MD } bgpq_vendor_t; typedef enum { T_NONE = 0, T_ASPATH, T_OASPATH, T_ASSET, T_PREFIXLIST, T_EACL, T_ROUTE_FILTER_LIST } bgpq_gen_t; struct bgpq_expander; struct bgpq_request { STAILQ_ENTRY(bgpq_request) next; char* request; int size, offset; int (*callback)(char*, struct bgpq_expander*, struct bgpq_request*); void *udata; unsigned depth; }; struct bgpq_expander { struct sx_radix_tree* tree; STAILQ_HEAD(sx_slentries, sx_slentry) macroses, rsets; RB_HEAD(tentree, sx_tentry) already, stoplist; int family; char* sources; uint32_t asnumber; int aswidth, asdot; char* name; bgpq_vendor_t vendor; bgpq_gen_t generation; int identify; int sequence; int maxdepth; int validate_asns; unsigned char asn32; unsigned char* asn32s[65536]; struct bgpq_prequest* firstpipe, *lastpipe; int piped; char* match; char* server; char* port; char* format; unsigned maxlen; STAILQ_HEAD(bgpq_requests, bgpq_request) wq, rq; int fd, cdepth; }; int bgpq_expander_init(struct bgpq_expander* b, int af); int bgpq_expander_add_asset(struct bgpq_expander* b, char* set); int bgpq_expander_add_rset(struct bgpq_expander* b, char* set); int bgpq_expander_add_as(struct bgpq_expander* b, char* as); int bgpq_expander_add_prefix(struct bgpq_expander* b, char* prefix); int bgpq_expander_add_prefix_range(struct bgpq_expander* b, char* prefix); int bgpq_expander_add_stop(struct bgpq_expander* b, char* object); int bgpq_expand(struct bgpq_expander* b); int bgpq3_print_prefixlist(FILE* f, struct bgpq_expander* b); int bgpq3_print_eacl(FILE* f, struct bgpq_expander* b); int bgpq3_print_aspath(FILE* f, struct bgpq_expander* b); int bgpq3_print_asset(FILE* f, struct bgpq_expander* b); int bgpq3_print_oaspath(FILE* f, struct bgpq_expander* b); int bgpq3_print_route_filter_list(FILE* f, struct bgpq_expander* b); #ifndef HAVE_STRLCPY size_t strlcpy(char* dst, const char* src, size_t size); #endif #endif bgpq3-0.1.36.1/bgpq3.html000066400000000000000000000335341416330673000146710ustar00rootroot00000000000000


NAME

bgpq3 - bgp filtering automation tool

SYNOPSIS

bgpq3 [-h host[:port]] [-S sources] [-EPz] [-f asn | -F fmt | -G asn | -t] [-2346ABbDdJjNnpsUX] [-a asn] [-r len] [-R len] [-m max] [-W len] OBJECTS [...] EXCEPT OBJECTS

DESCRIPTION

The bgpq3 utility used to generate configuration (prefix-lists, extended access-lists, policy-statement terms and as-path lists) based on RADB data.

The options are as follows:

-2

Allow routes registered for as23456 (transition-as) (default: false)

-3

Assume that your device is asn32-capable.

-4

Generate IPv4 prefix/access-lists (default).

-6

Generate IPv6 prefix/access-lists (IPv4 by default).

-A

Try to aggregate generated filters as much as possible (not all output formats supported).

-a asn

Specify ASN that shall be denied in case of empty prefix-list (OpenBGPD).

-B

Generate output in OpenBGPD format (default: Cisco).

-b

Generate output in BIRD format (default: Cisco).

-d

Enable some debugging output.

-D

Use asdot notation for Cisco as-path access-lists.

-E

Generate extended access-list (Cisco) or policy-statement term using route-filters (Juniper), [ip|ipv6]-prefix-list (Nokia) or prefix-filter (OpenBGPD)

-f AS number

Generate input as-path access-list for adjacent as AS number.

-F fmt

Generate output in user-defined format.

-G number

Generate output as-path access-list.

-h host[:port]

Host running IRRD database (default: whois.radb.net).

-J

Generate config for Juniper (default: Cisco).

-j

Generate output in JSON format (default: Cisco).

-m length

Maximum length of accepted prefixes (default: 32 for IPv4, 128 for IPv6).

-M match

Extra match conditions for Juniper route-filters. See the examples section.

-n

Generate config for Nokia SR OS (former Alcatel-Lucent) MD-CLI (default: Cisco)

-N

Generate config for Nokia SR OS (former Alcatel-Lucent) classic CLI (default: Cisco)

-l name

Name of generated configuration stanza.

-L limit

Limit recursion depth when expanding. This slows bgpq3 a bit, but sometimes is a useful feature to prevent generated filters from growing too big.

-p

Enable use of private ASNs and ASNs used for documentation purpose only (default: disabled).

-P

Generate prefix-list (default behaviour, flag added for backward compatibility only).

-r length

Allow more-specific routes with masklen starting with specified length.

-R length

Allow more-specific routes up to specified masklen too. (Please, note: objects with prefix-length greater than specified length will be always allowed.)

-s

Generate sequence numbers in IOS-style prefix-lists.

-S sources

Use specified database sources only (example: RIPE,APNIC,RADB).

-t

Generate as-sets for OpenBGPD (OpenBSD 6.4+), BIRD and JSON formats.

-T

Disable pipelining. (not recommended)

-U

Generate output in Huawei format (default: Cisco).

-W length

Generate as-path strings of a given length maximum (0 for infinity).

-X

Generate config for Cisco IOS XR devices (plain IOS by default).

-z

Generate Juniper route-filter-list (JunOS 16.2+).

OBJECTS

OBJECTS means networks (in prefix format), autonomous systems, as-sets and route-sets. If multiple objects are specified they will be merged.

EXCEPT OBJECTS

You can exclude autonomous sets, as-sets and route-sets found during expansion from future expansion.

EXAMPLES

Generating named Juniper prefix-filter for AS20597:

 user@host:~>bgpq3 -Jl eltel AS20597
 policy-options {
 replace:
  prefix-list eltel {
     81.9.0.0/20;
     81.9.32.0/20;
     81.9.96.0/20;
     81.222.128.0/20;
     81.222.192.0/18;
     85.249.8.0/21;
     85.249.224.0/19;
     89.112.0.0/19;
     89.112.4.0/22;
     89.112.32.0/19;
     89.112.64.0/19;
     217.170.64.0/20;
     217.170.80.0/20;
  }
 }

For Cisco we can use aggregation (-A) flag to make this prefix-filter more compact:

 user@host:~>bgpq3 -Al eltel AS20597
 no ip prefix-list eltel
 ip prefix-list eltel permit 81.9.0.0/20
 ip prefix-list eltel permit 81.9.32.0/20
 ip prefix-list eltel permit 81.9.96.0/20
 ip prefix-list eltel permit 81.222.128.0/20
 ip prefix-list eltel permit 81.222.192.0/18
 ip prefix-list eltel permit 85.249.8.0/21
 ip prefix-list eltel permit 85.249.224.0/19
 ip prefix-list eltel permit 89.112.0.0/18 ge 19 le 19
 ip prefix-list eltel permit 89.112.4.0/22
 ip prefix-list eltel permit 89.112.64.0/19
 ip prefix-list eltel permit 217.170.64.0/19 ge 20 le 20

and, as you see, prefixes 89.112.0.0/19 and 89.112.32.0/19 now aggregated into single entry 

ip prefix-list eltel permit 89.112.0.0/18 ge 19 le 19.

Well, for Juniper we can generate even more interesting policy-statement, using -M <extra match conditions>, -r <len>, -R <len> and hierarchical names:

 user@host:~>bgpq3 -AJEl eltel/specifics -r 29 -R 32 -M "community blackhole" AS20597
policy-options {
 policy-statement eltel {
  term specifics {
replace:
   from {
    community blackhole;
    route-filter 81.9.0.0/20 prefix-length-range /29-/32;
    route-filter 81.9.32.0/20 prefix-length-range /29-/32;
    route-filter 81.9.96.0/20 prefix-length-range /29-/32;
    route-filter 81.222.128.0/20 prefix-length-range /29-/32;
    route-filter 81.222.192.0/18 prefix-length-range /29-/32;
    route-filter 85.249.8.0/21 prefix-length-range /29-/32;
    route-filter 85.249.224.0/19 prefix-length-range /29-/32;
    route-filter 89.112.0.0/17 prefix-length-range /29-/32;
    route-filter 217.170.64.0/19 prefix-length-range /29-/32;
   }
  }
 }
}

generated policy-option term now allows more-specific routes in range /29 - /32 for eltel networks if they marked with community 'blackhole' (defined elsewhere in configuration).

Of course, bgpq3 supports IPv6 (-6):

 user@host:~>bgpq3 -6l as-retn-6 AS-RETN6
 no ipv6 prefix-list as-retn-6
 ipv6 prefix-list as-retn-6 permit 2001:7fb:fe00::/48
 ipv6 prefix-list as-retn-6 permit 2001:7fb:fe01::/48
 [....]

and ASN32

 user@host:~>bgpq3 -J3f 112 AS-SPACENET
 policy-options {
 replace:
  as-path-group NN {
   as-path a0 "^112(112)*$";
   as-path a1 "^112(.)*(1898|5539|8495|8763|8878|12136|12931|15909)$";
   as-path a2 "^112(.)*(21358|23456|23600|24151|25152|31529|34127|34906)$";
   as-path a3 "^112(.)*(35052|41720|43628|44450|196611)$";
  }
 }

see AS196611 in the end of the list ? That's AS3.3 in 'asplain' notation.

If your router does not support ASN32 (yet) you should not use switch -3, and the result will be next:

 user@host:~>bgpq3 -f 112 AS-SPACENET
 no ip as-path access-list NN
 ip as-path access-list NN permit ^112( 112)*$
 ip as-path access-list NN permit ^112( [0-9]+)* (1898|5539|8495|8763)$
 ip as-path access-list NN permit ^112( [0-9]+)* (8878|12136|12931|15909)$
 ip as-path access-list NN permit ^112( [0-9]+)* (21358|23456|23600|24151)$
 ip as-path access-list NN permit ^112( [0-9]+)* (25152|31529|34127|34906)$
 ip as-path access-list NN permit ^112( [0-9]+)* (35052|41720|43628|44450)$

AS196611 is no more in the list, however, AS23456 (transition AS) would have been added to list if it were not present.

USER-DEFINED FORMAT

If you want to generate configuration not for routers, but for some other programs/systems, you may use user-defined formatting, like in example below:

user@host:~>bgpq3 -F "ipfw add pass all from %n/%l to any\\n" as3254
ipfw add pass all from 62.244.0.0/18 to any
ipfw add pass all from 91.219.29.0/24 to any
ipfw add pass all from 91.219.30.0/24 to any
ipfw add pass all from 193.193.192.0/19 to any

Recognized format characters: '%n' - network, '%l' - mask length, '%N' - object name, '%m' - object mask and '%i' - inversed mask. Recognized escape characters: '\n' - new line, '\t' - tabulation. Please note that no new lines inserted automatically after each sentence, you have to add them into format string manually, elsewhere output will be in one line (sometimes it makes sense):

user@host:~>bgpq3 -6F "%n/%l; " as-eltel
2001:1b00::/32; 2620:4f:8000::/48; 2a04:bac0::/29; 2a05:3a80::/48;

NOTES ON 'Database Sources' (-S) flag

By default bgpq3 trusts to data from all databases mirrored into RADB. Unfortunately, not all these databases are equal in how much can we trust their data. RIR maintained databases (AFRINIC,ARIN,APNIC and RIPE) shall be trusted more than the others because they are indeed have the knowledge about which address space allocated to this or that ASn, other databases lack this knowledge and can (and, actually, do) contain some stale data: noone but RIRs care to remove outdated route-objects when address space revoked from one ASn and allocated to another. In order to keep their filters both compact and actual, bgpq3 users are encouraged to use '-S' flag to limit database sources to only ones they trust.

General recommendations: * use minimal set of RIR databases (only those in which you and your customers have registered route-objects). Keep RIR of your home region first in the list. * use non-RIR databases only when operating in LACNIC region (for some reason LACNIC does not export their data to RADB) or when you are unable to make your customers maintain their data in RIR databases. * avoid using RIPE-NONAUTH as trusted source: these records were created in RIPE database but for address space allocated to different RIR, so RIPE had no chance to check validity of this route.

Note on source ordering: order matters. When expanding as-sets, IRRd sequentally checks all sources for matching object and stops on first found entry. So, in case when as-set registered in multiple databases (with different content), generated filters may differ depending on source order:

snar@host:~>bgpq3 -S RIPE,RADB as-space
no ip prefix-list NN
ip prefix-list NN permit 195.190.32.0/19

snar@host:~>bgpq3 -S RADB,RIPE as-space
no ip prefix-list NN
ip prefix-list NN permit 45.4.4.0/22
ip prefix-list NN permit 45.4.132.0/22
ip prefix-list NN permit 45.6.128.0/22
ip prefix-list NN permit 45.65.184.0/22
[...]

Example: as we are operating mostly in Europe and APAC, we generate most of our filters with '-S RIPE,APNIC,RADB'.

DIAGNOSTICS

When everything is OK, bgpq3 generates result to standard output and exits with status == 0. In case of errors they are printed to stderr and program exits with non-zero status.

NOTES ON ULTRA-LARGE PREFIX-LISTS

To improve bgpq3 performance when expanding extra-large AS-SETs you shall tune OS settings to enlarge TCP send buffer.

FreeBSD can be tuned in the following way:

sysctl -w net.inet.tcp.sendbuf_max=2097152

Linux can be tuned in the following way:

sysctl -w net.ipv4.tcp_window_scaling=1
sysctl -w net.core.rmem_max=2097152
sysctl -w net.core.wmem_max=2097152
sysctl -w net.ipv4.tcp_rmem="4096 87380 2097152"
sysctl -w net.ipv4.tcp_wmem="4096 65536 2097152"

Please note that generated prefix-lists may not fit your router's limitations. For example, JunOS supports only 85,325 prefixes in each prefix-list 4.

SEE ALSO

  1. Routing Arbiter
  2. draft-michaelson-4byte-as-representation-05 for information on 'asdot' and 'asplain' notations.
  3. Cisco documentation for information on Cisco implementation of ASN32.
  4. JunOS prefix-lists limitation

AUTHOR

Alexandre Snarskii snar@snar.spb.ru

Program Homepage

http://snar.spb.ru/prog/bgpq3/

bgpq3-0.1.36.1/bgpq3.spec000066400000000000000000000034711416330673000146540ustar00rootroot00000000000000Name: bgpq3 Version: 0.1.36.1 Release: 0%{?dist} Group: System/Utilities Summary: Automate BGP filter generation based on routing database information URL: http://snar.spb.ru/prog/bgpq3/ License: BSD Source0: https://github.com/snar/bgpq3/archive/v0.1.36.1.tar.gz BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n) %description You are running BGP in your network and want to automate filter generation for your routers? Well, with BGPQ3 it's easy. %prep %setup -q %global debug_package %{nil} %build ./configure --prefix=$RPM_BUILD_ROOT%{_prefix} --mandir=%{_mandir} make %install rm -rf $RPM_BUILD_ROOT mkdir -p $RPM_BUILD_ROOT/usr/bin make install %files %defattr(-,root,root,-) /usr/bin/bgpq3 /usr/man/man8/bgpq3.8.gz %doc COPYRIGHT CHANGES %clean rm -rf $RPM_BUILD_ROOT %changelog * Mon Sep 27 2021 Alexandre Snarskii 0.1.36 - Version updated * Tue Nov 30 2018 Alexandre Snarskii 0.1.35 - Version updated * Fri Oct 14 2016 Alexandre Snarskii 0.1.33 - Version updated * Tue Jun 23 Alexandre Snarskii 0.1.31 - Version updated * Tue Mar 10 Alexandre Snarskii 0.1.28 - Version updated * Wed Oct 29 Alexandre Snarskii 0.1.25 - Version updated * Thu Jun 5 2014 Alexandre Snarskii 0.1.21-0.snar - Version updated * Thu May 9 2013 Alexandre Snarskii 0.1.19-0.snar - Version updated * Sun Feb 24 2013 Alexandre Snarskii 0.1.18-3.snar - License corrected * Wed Feb 20 2013 Arnoud Vermeer 0.1.18-2.tumblr - Adding missing group info (arnoud@tumblr.com) * Wed Feb 20 2013 Arnoud Vermeer 0.1.18-1.tumblr - new package built with tito bgpq3-0.1.36.1/bgpq3_printer.c000066400000000000000000001110341416330673000157020ustar00rootroot00000000000000#if HAVE_CONFIG_H #include #endif #include #include #include #include #include #include #include #include "bgpq3.h" #include "sx_report.h" extern int debug_expander; int bgpq3_print_json_aspath(FILE* f, struct bgpq_expander* b); int bgpq3_print_bird_aspath(FILE* f, struct bgpq_expander* b); int bgpq3_print_openbgpd_aspath(FILE* f, struct bgpq_expander* b); int bgpq3_print_openbgpd_asset(FILE* f, struct bgpq_expander* b); int bgpq3_print_cisco_aspath(FILE* f, struct bgpq_expander* b) { int nc=0, i, j, k, empty=1; fprintf(f,"no ip as-path access-list %s\n", b->name?b->name:"NN"); if(b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65536][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { if(b->asdot && b->asnumber>65535) { /* b->asnumber > 0 is implied */ fprintf(f,"ip as-path access-list %s permit ^%u.%u(_%u.%u)*$\n", b->name?b->name:"NN",b->asnumber/65536,b->asnumber%65536, b->asnumber/65536,b->asnumber%65536); empty=0; } else if (b->asnumber>0) { fprintf(f,"ip as-path access-list %s permit ^%u(_%u)*$\n", b->name?b->name:"NN",b->asnumber,b->asnumber); empty=0; }; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(b->asnumber>0 && k*65536+i*8+j==b->asnumber) continue; if(!nc) { if(b->asdot && k>0 && b->asnumber>0) { fprintf(f,"ip as-path access-list %s permit" " ^%u(_[0-9]+)*_(%u.%u", b->name?b->name:"NN", b->asnumber,k,i*8+j); empty=0; } else if(b->asnumber>0) { fprintf(f,"ip as-path access-list %s permit" " ^%u(_[0-9]+)*_(%u", b->name?b->name:"NN", b->asnumber,k*65536+i*8+j); empty=0; } else if(b->asdot && k>0) { /* b->asnumber==0 is implied */ fprintf(f,"ip as-path access-list %s permit" " ^.*(%u.%u", b->name?b->name:"NN",k,i*8+j); } else { fprintf(f,"ip as-path access-list %s permit" " ^.*(%u",b->name?b->name:"NN",k*65536+i*8+j); }; } else { if(b->asdot && k>0) { fprintf(f,"|%u.%u",k,i*8+j); empty=0; } else { fprintf(f,"|%u",k*65536+i*8+j); empty=0; }; } nc++; if(nc==b->aswidth) { fprintf(f,")$\n"); nc=0; }; }; }; }; }; if(nc) fprintf(f,")$\n"); if(empty) fprintf(f,"ip as-path access-list %s deny .*\n", b->name?b->name:"NN"); return 0; }; int bgpq3_print_cisco_xr_aspath(FILE* f, struct bgpq_expander* b) { int nc=0, i, j, k, comma=0; fprintf(f, "as-path-set %s", b->name?b->name:"NN"); if(b->asnumber!=0 && b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65536][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f,"\n ios-regex '^%u(_%u)*$'", b->asnumber,b->asnumber); comma=1; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(b->asnumber!=0 && k*65536+i*8+j==b->asnumber) continue; if(!nc && b->asnumber!=0) { fprintf(f,"%s\n ios-regex '^%u(_[0-9]+)*_(%u", comma?",":"", b->asnumber,k*65536+i*8+j); comma=1; } else if(!nc) { fprintf(f,"%s\n ios-regex '^([0-9]+_)*(%u", comma?",":"",k*65536+i*8+j); comma=1; } else { fprintf(f,"|%u",k*65536+i*8+j); } nc++; if(nc==b->aswidth) { fprintf(f,")$'"); nc=0; }; }; }; }; }; if(nc) fprintf(f,")$'"); fprintf(f,"\nend-set\n"); return 0; }; int bgpq3_print_cisco_oaspath(FILE* f, struct bgpq_expander* b) { int nc=0, i, j, k, empty=1; fprintf(f,"no ip as-path access-list %s\n", b->name?b->name:"NN"); if(b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65536][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { if(b->asdot && b->asnumber>65535) { fprintf(f,"ip as-path access-list %s permit ^(_%u.%u)*$\n", b->name?b->name:"NN",b->asnumber/65536,b->asnumber%65536); } else { fprintf(f,"ip as-path access-list %s permit ^(_%u)*$\n", b->name?b->name:"NN",b->asnumber); }; empty=0; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(k*65536+i*8+j==b->asnumber) continue; if(!nc) { if(b->asdot && k>0) { fprintf(f,"ip as-path access-list %s permit" " ^(_[0-9]+)*_(%u.%u", b->name?b->name:"NN", k,i*8+j); empty=0; } else { fprintf(f,"ip as-path access-list %s permit" " ^(_[0-9]+)*_(%u", b->name?b->name:"NN", k*65536+i*8+j); empty=0; }; } else { if(b->asdot && k>0) { fprintf(f,"|%u.%u",k,i*8+j); empty=0; } else { fprintf(f,"|%u",k*65536+i*8+j); empty=0; }; } nc++; if(nc==b->aswidth) { fprintf(f,")$\n"); nc=0; }; }; }; }; }; if(nc) fprintf(f,")$\n"); if(empty) fprintf(f,"ip as-path access-list %s deny .*\n", b->name?b->name:"NN"); return 0; }; int bgpq3_print_cisco_xr_oaspath(FILE* f, struct bgpq_expander* b) { int nc=0, i, j, k, comma=0; fprintf(f, "as-path-set %s", b->name?b->name:"NN"); if(b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65536][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f,"\n ios-regex '^(_%u)*$'",b->asnumber); comma=1; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(k*65536+i*8+j==b->asnumber) continue; if(!nc) { fprintf(f,"%s\n ios-regex '^(_[0-9]+)*_(%u", comma?",":"", k*65536+i*8+j); comma=1; } else { fprintf(f,"|%u",k*65536+i*8+j); } nc++; if(nc==b->aswidth) { fprintf(f,")$'"); nc=0; }; }; }; }; }; if(nc) fprintf(f,")$'"); fprintf(f,"\nend-set\n"); return 0; }; int bgpq3_print_juniper_aspath(FILE* f, struct bgpq_expander* b) { int nc=0, lineNo=0, i, j, k; fprintf(f,"policy-options {\nreplace:\n as-path-group %s {\n", b->name?b->name:"NN"); if(b->asnumber!=0 && b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65535][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f," as-path a%u \"^%u(%u)*$\";\n", lineNo, b->asnumber, b->asnumber); lineNo++; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(b->asnumber!=0 && k*65536+i*8+j==b->asnumber) continue; if(!nc && b->asnumber!=0) { fprintf(f," as-path a%u \"^%u(.)*(%u", lineNo,b->asnumber,k*65536+i*8+j); } else if (!nc) { fprintf(f," as-path a%u \"^.*(%u", lineNo, k*65536+i*8+j); } else { fprintf(f,"|%u",k*65536+i*8+j); }; nc++; if(nc==b->aswidth) { fprintf(f,")$\";\n"); nc=0; lineNo++; }; }; }; }; }; if(nc) fprintf(f,")$\";\n"); else if(lineNo==0) fprintf(f," as-path aNone \"!.*\";\n"); fprintf(f," }\n}\n"); return 0; }; int bgpq3_print_juniper_oaspath(FILE* f, struct bgpq_expander* b) { int nc=0, lineNo=0, i, j, k; fprintf(f,"policy-options {\nreplace:\n as-path-group %s {\n", b->name?b->name:"NN"); if(b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65536][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f," as-path a%u \"^%u(%u)*$\";\n", lineNo, b->asnumber, b->asnumber); lineNo++; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(k*65536+i*8+j==b->asnumber) continue; if(!nc) { fprintf(f," as-path a%u \"^(.)*(%u", lineNo,k*65536+i*8+j); } else { fprintf(f,"|%u",k*65536+i*8+j); } nc++; if(nc==b->aswidth) { fprintf(f,")$\";\n"); nc=0; lineNo++; }; }; }; }; }; if(nc) fprintf(f,")$\";\n"); else if(lineNo==0) fprintf(f," as-path aNone \"!.*\";\n"); fprintf(f," }\n}\n"); return 0; }; int bgpq3_print_openbgpd_oaspath(FILE* f, struct bgpq_expander* b) { int i, j, k, lineNo=0; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { fprintf(f, "allow to AS %u AS %u\n", b->asnumber, k*65536+i*8+j); lineNo++; }; }; }; }; if(!lineNo) fprintf(f, "deny to AS %u\n", b->asnumber); return 0; }; int bgpq3_print_nokia_aspath(FILE* f, struct bgpq_expander* b) { int nc=0, lineNo=1, i, j, k; fprintf(f,"configure router policy-options\nbegin\nno as-path-group \"%s\"\n", b->name ? b->name : "NN"); fprintf(f,"as-path-group \"%s\"\n", b->name ? b->name : "NN"); if(b->asnumber>0 && b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65535][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f," entry %u expression \"%u+\"\n", lineNo, b->asnumber); lineNo++; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(b->asnumber>0 && k*65536+i*8+j==b->asnumber) continue; if(!nc && b->asnumber!=0) { fprintf(f," entry %u expression \"%u.*[%u", lineNo,b->asnumber,k*65536+i*8+j); } else if(!nc) { fprintf(f," entry %u expression \".*[%u", lineNo,k*65536+i*8+j); } else { fprintf(f," %u",k*65536+i*8+j); }; nc++; if(nc==b->aswidth) { fprintf(f,"]\"\n"); nc=0; lineNo++; }; }; }; }; }; if(nc) fprintf(f,"]\"\n"); fprintf(f,"exit\ncommit\n"); return 0; }; int bgpq3_print_nokia_md_aspath(FILE* f, struct bgpq_expander* b) { int nc=0, lineNo=1, i, j, k; fprintf(f,"/configure policy-options\ndelete as-path-group \"%s\"\n", b->name ? b->name : "NN"); fprintf(f,"as-path-group \"%s\" {\n", b->name ? b->name : "NN"); if(b->asnumber!=0 && b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65535][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f," entry %u {\n expression \"%u+\"\n }\n", lineNo, b->asnumber); lineNo++; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(b->asnumber!=0 && k*65536+i*8+j==b->asnumber) continue; if(!nc && b->asnumber!=0) { fprintf(f," entry %u {\n expression \"%u.*[%u", lineNo,b->asnumber,k*65536+i*8+j); } else if(!nc) { fprintf(f," entry %u {\n expression \".*[%u", lineNo,k*65536+i*8+j); } else { fprintf(f," %u",k*65536+i*8+j); }; nc++; if(nc==b->aswidth) { fprintf(f,"]\"\n }\n"); nc=0; lineNo++; }; }; }; }; }; if(nc) fprintf(f,"]\"\n }\n"); fprintf(f, "}\n"); return 0; }; int bgpq3_print_huawei_aspath(FILE* f, struct bgpq_expander* b) { int nc=0, i, j, k, empty=1; fprintf(f,"undo ip as-path-filter %s\n", b->name ? b->name : "NN"); if(b->asnumber!=0 && b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65535][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f,"ip as-path-filter %s permit ^%u(_%u)*$\n", b->name?b->name:"NN",b->asnumber,b->asnumber); empty=0; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(b->asnumber!=0 && k*65536+i*8+j==b->asnumber) continue; if(!nc && b->asnumber!=0) { fprintf(f,"ip as-path-filter %s permit ^%u(_[0-9]+)*" "_(%u", b->name?b->name:"NN",b->asnumber,k*65536+i*8+j); empty=0; } else if (!nc) { fprintf(f,"ip as-path-filter %s permit ^.*_(%u", b->name?b->name:"NN",k*65536+i*8+j); } else { fprintf(f,"|%u",k*65536+i*8+j); }; nc++; if(nc==b->aswidth) { fprintf(f,")$\n"); nc=0; }; }; }; }; }; if(nc) fprintf(f,")$\n"); if(empty) fprintf(f,"ip as-path-filter %s deny .*\n", b->name?b->name:"NN"); return 0; }; int bgpq3_print_huawei_oaspath(FILE* f, struct bgpq_expander* b) { int nc=0, i, j, k, empty=1; fprintf(f,"undo ip as-path-filter %s\n", b->name ? b->name : "NN"); if(b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65536][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f,"ip as-path-filter %s permit (_%u)*$\n", b->name?b->name:"NN", b->asnumber); empty=0; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(k*65536+i*8+j==b->asnumber) continue; if(!nc) { fprintf(f,"ip as-path-filter %s permit ^(_[0-9]+)*_(%u", b->name?b->name:"NN",k*65536+i*8+j); } else { fprintf(f,"|%u",k*65536+i*8+j); } nc++; empty=0; if(nc==b->aswidth) { fprintf(f,")$\n"); nc=0; }; }; }; }; }; if(nc) fprintf(f,")$\n"); if(empty) fprintf(f, "ip as-path-filter %s deny .*\n", b->name?b->name:"NN"); return 0; }; int bgpq3_print_nokia_oaspath(FILE* f, struct bgpq_expander* b) { int nc=0, lineNo=1, i, j, k; fprintf(f,"configure router policy-options\nbegin\nno as-path-group \"%s\"\n", b->name ? b->name : "NN"); fprintf(f,"as-path-group \"%s\"\n", b->name ? b->name : "NN"); if(b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65536][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f," entry %u expression \"%u+\"\n", lineNo, b->asnumber); lineNo++; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(k*65536+i*8+j==b->asnumber) continue; if(!nc) { fprintf(f," entry %u expression \".*[%u", lineNo,k*65536+i*8+j); } else { fprintf(f," %u",k*65536+i*8+j); } nc++; if(nc==b->aswidth) { fprintf(f,"]\"\n"); nc=0; lineNo++; }; }; }; }; }; if(nc) fprintf(f,"]\"\n"); return 0; }; int bgpq3_print_nokia_md_oaspath(FILE* f, struct bgpq_expander* b) { int nc=0, lineNo=1, i, j, k; fprintf(f,"/configure policy-options\ndelete as-path-group \"%s\"\n", b->name ? b->name : "NN"); fprintf(f,"as-path-group \"%s\" {\n", b->name ? b->name : "NN"); if(b->asn32s[b->asnumber/65536] && b->asn32s[b->asnumber/65536][(b->asnumber%65536)/8]& (0x80>>(b->asnumber%8))) { fprintf(f," entry %u {\n expression \"%u+\"\n }\n", lineNo, b->asnumber); lineNo++; }; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(k*65536+i*8+j==b->asnumber) continue; if(!nc) { fprintf(f," entry %u {\n expression \".*[%u", lineNo,k*65536+i*8+j); } else { fprintf(f," %u",k*65536+i*8+j); } nc++; if(nc==b->aswidth) { fprintf(f,"]\"\n }\n"); nc=0; lineNo++; }; }; }; }; }; if(nc) fprintf(f,"]\"\n }\n"); fprintf(f, "}\n"); return 0; }; int bgpq3_print_aspath(FILE* f, struct bgpq_expander* b) { if(b->vendor==V_JUNIPER) { return bgpq3_print_juniper_aspath(f,b); } else if(b->vendor==V_CISCO) { return bgpq3_print_cisco_aspath(f,b); } else if(b->vendor==V_CISCO_XR) { return bgpq3_print_cisco_xr_aspath(f,b); } else if(b->vendor==V_JSON) { return bgpq3_print_json_aspath(f,b); } else if(b->vendor==V_BIRD) { return bgpq3_print_bird_aspath(f,b); } else if(b->vendor==V_OPENBGPD) { return bgpq3_print_openbgpd_aspath(f,b); } else if(b->vendor==V_NOKIA) { return bgpq3_print_nokia_aspath(f,b); } else if(b->vendor==V_NOKIA_MD) { return bgpq3_print_nokia_md_aspath(f,b); } else if(b->vendor==V_HUAWEI) { return bgpq3_print_huawei_aspath(f,b); } else { sx_report(SX_FATAL,"Unknown vendor %i\n", b->vendor); }; return 0; }; int bgpq3_print_oaspath(FILE* f, struct bgpq_expander* b) { if(b->vendor==V_JUNIPER) { return bgpq3_print_juniper_oaspath(f,b); } else if(b->vendor==V_CISCO) { return bgpq3_print_cisco_oaspath(f,b); } else if(b->vendor==V_CISCO_XR) { return bgpq3_print_cisco_xr_oaspath(f,b); } else if(b->vendor==V_OPENBGPD) { return bgpq3_print_openbgpd_oaspath(f,b); } else if(b->vendor==V_NOKIA) { return bgpq3_print_nokia_oaspath(f,b); } else if(b->vendor==V_NOKIA_MD) { return bgpq3_print_nokia_md_oaspath(f,b); } else if(b->vendor==V_HUAWEI) { return bgpq3_print_huawei_oaspath(f,b); } else { sx_report(SX_FATAL,"Unknown vendor %i\n", b->vendor); }; return 0; }; int bgpq3_print_asset(FILE* f, struct bgpq_expander* b) { switch(b->vendor) { case V_JSON: return bgpq3_print_json_aspath(f,b); case V_OPENBGPD: return bgpq3_print_openbgpd_asset(f,b); case V_BIRD: return bgpq3_print_bird_aspath(f,b); default: sx_report(SX_FATAL, "as-sets (-t) supported for JSON, OpenBGPD " "and BIRD only\n"); return -1; }; }; void bgpq3_print_jprefix(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(n->isGlue) return; if(!f) f=stdout; sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix)); fprintf(f," %s;\n",prefix); }; static int needscomma=0; void bgpq3_print_json_prefix(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(n->isGlue) goto checkSon; if(!f) f=stdout; sx_prefix_jsnprintf(&n->prefix, prefix, sizeof(prefix)); if (!n->isAggregate) { fprintf(f, "%s\n { \"prefix\": \"%s\", \"exact\": true }", needscomma?",":"", prefix); } else if (n->aggregateLow > n->prefix.masklen) { fprintf(f, "%s\n { \"prefix\": \"%s\", \"exact\": false,\n " "\"greater-equal\": %u, \"less-equal\": %u }", needscomma?",":"", prefix, n->aggregateLow, n->aggregateHi); } else { fprintf(f, "%s\n { \"prefix\": \"%s\", \"exact\": false, " "\"less-equal\": %u }", needscomma?",":"", prefix, n->aggregateHi); }; needscomma=1; checkSon: if(n->son) bgpq3_print_json_prefix(n->son, ff); }; int bgpq3_print_json_aspath(FILE* f, struct bgpq_expander* b) { int nc=0, i, j, k; fprintf(f,"{\"%s\": [", b->name?b->name:"NN"); for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(!nc) { fprintf(f,"%s\n %u",needscomma?",":"", k*65536+i*8+j); needscomma=1; } else { fprintf(f,"%s%u",needscomma?",":"", k*65536+i*8+j); needscomma=1; } nc++; if(nc==b->aswidth) { nc=0; }; }; }; }; }; fprintf(f,"\n]}\n"); return 0; }; void bgpq3_print_bird_prefix(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(n->isGlue) goto checkSon; if(!f) f=stdout; sx_prefix_snprintf(&n->prefix, prefix, sizeof(prefix)); if (!n->isAggregate) { fprintf(f, "%s\n %s", needscomma?",":"", prefix); } else if (n->aggregateLow > n->prefix.masklen) { fprintf(f, "%s\n %s{%u,%u}", needscomma?",":"", prefix, n->aggregateLow, n->aggregateHi); } else { fprintf(f, "%s\n %s{%u,%u}", needscomma?",":"", prefix, n->prefix.masklen, n->aggregateHi); }; needscomma=1; checkSon: if(n->son) bgpq3_print_bird_prefix(n->son, ff); }; int bgpq3_print_bird_aspath(FILE* f, struct bgpq_expander* b) { int nc=0, i, j, k, empty=1; char buffer[2048]; snprintf(buffer, sizeof(buffer), "%s = [", b->name?b->name:"NN"); for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(buffer[0]) fprintf(f, "%s", buffer); buffer[0]=0; if(!nc) { fprintf(f, "%s%u", empty?"":",\n ", k*65536+i*8+j); empty = 0; } else { fprintf(f, ", %u", k*65536+i*8+j); }; nc++; if(nc==b->aswidth) { nc=0; }; }; }; }; }; if(!empty) fprintf(f,"];\n"); return 0; }; void bgpq3_print_openbgpd_prefix(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(n->isGlue) goto checkSon; if(!f) f=stdout; sx_prefix_snprintf(&n->prefix, prefix, sizeof(prefix)); if (!n->isAggregate) { fprintf(f, "\n\t%s", prefix); } else if (n->aggregateLow == n->aggregateHi) { fprintf(f, "\n\t%s prefixlen = %u", prefix, n->aggregateHi); } else if (n->aggregateLow > n->prefix.masklen) { fprintf(f, "\n\t%s prefixlen %u - %u", prefix, n->aggregateLow, n->aggregateHi); } else { fprintf(f, "\n\t%s prefixlen %u - %u", prefix, n->prefix.masklen, n->aggregateHi); }; checkSon: if(n->son) bgpq3_print_openbgpd_prefix(n->son, ff); }; int bgpq3_print_openbgpd_asset(FILE* f, struct bgpq_expander* b) { int i, j, k, nc=0; fprintf(f, "as-set %s {", b->name?b->name:"NN"); for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { fprintf(f, "%s%u", nc==0 ? "\n\t" : " ", k*65536+i*8+j); nc++; if(nc==b->aswidth) nc=0; }; }; }; }; fprintf(f, "\n}\n"); return 0; }; int bgpq3_print_openbgpd_aspath(FILE* f, struct bgpq_expander* b) { int i, j, k, lineNo=0; for(k=0;k<65536;k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { fprintf(f, "allow from AS %u AS %u\n", b->asnumber, k*65536+i*8+j); lineNo++; }; }; }; }; if(!lineNo) fprintf(f, "deny from AS %u\n", b->asnumber); return 0; }; static int jrfilter_prefixed=1; void bgpq3_print_jrfilter(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(n->isGlue) goto checkSon; if(!f) f=stdout; sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix)); if(!n->isAggregate) { fprintf(f," %s%s exact;\n", jrfilter_prefixed ? "route-filter " : "", prefix); } else { if(n->aggregateLow>n->prefix.masklen) { fprintf(f," %s%s prefix-length-range /%u-/%u;\n", jrfilter_prefixed ? "route-filter " : "", prefix,n->aggregateLow,n->aggregateHi); } else { fprintf(f," %s%s upto /%u;\n", jrfilter_prefixed ? "route-filter " : "", prefix,n->aggregateHi); }; }; checkSon: if(n->son) bgpq3_print_jrfilter(n->son, ff); }; static char* bname=NULL; static int seq=0; void bgpq3_print_cprefix(struct sx_radix_node* n, void* ff) { char prefix[128], seqno[16]=""; FILE* f=(FILE*)ff; if(!f) f=stdout; if(n->isGlue) goto checkSon; sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix)); if(seq) snprintf(seqno, sizeof(seqno), " seq %i", seq++); if(n->isAggregate) { if(n->aggregateLow>n->prefix.masklen) { fprintf(f,"%s prefix-list %s%s permit %s ge %u le %u\n", n->prefix.family==AF_INET?"ip":"ipv6",bname?bname:"NN",seqno, prefix,n->aggregateLow,n->aggregateHi); } else { fprintf(f,"%s prefix-list %s%s permit %s le %u\n", n->prefix.family==AF_INET?"ip":"ipv6",bname?bname:"NN",seqno, prefix,n->aggregateHi); }; } else { fprintf(f,"%s prefix-list %s%s permit %s\n", (n->prefix.family==AF_INET)?"ip":"ipv6",bname?bname:"NN",seqno, prefix); }; checkSon: if(n->son) bgpq3_print_cprefix(n->son,ff); }; void bgpq3_print_cprefixxr(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(!f) f=stdout; if(n->isGlue) goto checkSon; sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix)); if(n->isAggregate) { if(n->aggregateLow>n->prefix.masklen) { fprintf(f,"%s%s ge %u le %u", needscomma?",\n ":" ", prefix, n->aggregateLow, n->aggregateHi); } else { fprintf(f,"%s%s le %u", needscomma?",\n ":" ", prefix, n->aggregateHi); }; } else { fprintf(f,"%s%s", needscomma?",\n ":" ", prefix); }; needscomma=1; checkSon: if(n->son) bgpq3_print_cprefixxr(n->son,ff); }; void bgpq3_print_hprefix(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(!f) f=stdout; if(n->isGlue) goto checkSon; sx_prefix_snprintf_sep(&n->prefix,prefix,sizeof(prefix)," "); if(n->isAggregate) { if(n->aggregateLow>n->prefix.masklen) { fprintf(f,"ip %s-prefix %s permit %s greater-equal %u " "less-equal %u\n", n->prefix.family==AF_INET?"ip":"ipv6",bname?bname:"NN", prefix,n->aggregateLow,n->aggregateHi); } else { fprintf(f,"ip %s-prefix %s permit %s less-equal %u\n", n->prefix.family==AF_INET?"ip":"ipv6",bname?bname:"NN", prefix,n->aggregateHi); }; } else { fprintf(f,"ip %s-prefix %s permit %s\n", (n->prefix.family==AF_INET)?"ip":"ipv6",bname?bname:"NN", prefix); }; checkSon: if(n->son) bgpq3_print_hprefix(n->son,ff); }; void bgpq3_print_ceacl(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; char* c; uint32_t netmask=0xfffffffful; if(!f) f=stdout; if(n->isGlue) goto checkSon; sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix)); c=strchr(prefix,'/'); if(c) *c=0; if(n->prefix.masklen==32) { netmask=0; } else { netmask<<=(32-n->prefix.masklen); netmask&=0xfffffffful; }; netmask=htonl(netmask); if(n->isAggregate) { unsigned long mask=0xfffffffful, wildaddr, wild2addr, wildmask; int masklen=n->aggregateLow; wildaddr=0xfffffffful>>n->prefix.masklen; if(n->aggregateHi==32) { wild2addr=0; } else { wild2addr=0xfffffffful>>n->aggregateHi; }; wildaddr=wildaddr&(~wild2addr); if(masklen==32) mask=0xfffffffful; else mask=0xfffffffful & (0xfffffffful<<(32-masklen)); if(n->aggregateHi==32) wild2addr=0; else wild2addr=0xfffffffful>>n->aggregateHi; wildmask=(0xfffffffful>>n->aggregateLow)&(~wild2addr); mask=htonl(mask); wildaddr=htonl(wildaddr); wildmask=htonl(wildmask); if(wildaddr) { fprintf(f," permit ip %s ", inet_ntoa(n->prefix.addr.addr)); fprintf(f,"%s ", inet_ntoa(*(struct in_addr*)&wildaddr)); } else { fprintf(f," permit ip host %s ",inet_ntoa(n->prefix.addr.addr)); }; if(wildmask) { fprintf(f,"%s ", inet_ntoa(*(struct in_addr*)&mask)); fprintf(f,"%s\n", inet_ntoa(*(struct in_addr*)&wildmask)); } else { fprintf(f,"host %s\n", inet_ntoa(*(struct in_addr*)&mask)); }; } else { fprintf(f," permit ip host %s host %s\n",prefix, inet_ntoa(*(struct in_addr*)&netmask)); }; checkSon: if(n->son) bgpq3_print_ceacl(n->son,ff); }; void bgpq3_print_nokia_ipfilter(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(n->isGlue) goto checkSon; if(!f) f=stdout; sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix)); fprintf(f," prefix %s\n", prefix); checkSon: if(n->son) bgpq3_print_nokia_ipfilter(n->son, ff); }; void bgpq3_print_nokia_md_ipfilter(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(n->isGlue) goto checkSon; if(!f) f=stdout; sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix)); fprintf(f," prefix %s { }\n", prefix); checkSon: if(n->son) bgpq3_print_nokia_md_ipfilter(n->son, ff); }; void bgpq3_print_nokia_prefix(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(n->isGlue) goto checkSon; if(!f) f=stdout; sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix)); if(!n->isAggregate) { fprintf(f," prefix %s exact\n", prefix); } else { if(n->aggregateLow>n->prefix.masklen) { fprintf(f," prefix %s prefix-length-range %u-%u\n", prefix,n->aggregateLow,n->aggregateHi); } else { fprintf(f," prefix %s prefix-length-range %u-%u\n", prefix, n->prefix.masklen, n->aggregateHi); }; }; checkSon: if(n->son) bgpq3_print_nokia_prefix(n->son, ff); }; void bgpq3_print_nokia_md_prefix(struct sx_radix_node* n, void* ff) { char prefix[128]; FILE* f=(FILE*)ff; if(n->isGlue) goto checkSon; if(!f) f=stdout; sx_prefix_snprintf(&n->prefix,prefix,sizeof(prefix)); if(!n->isAggregate) { fprintf(f," prefix %s type exact {\n }\n", prefix); } else { if(n->aggregateLow>n->prefix.masklen) { fprintf(f," prefix %s type range {\n start-length %u\n" " end-length %u\n }\n", prefix,n->aggregateLow,n->aggregateHi); } else { fprintf(f," prefix %s type through {\n " "through-length %u\n }\n", prefix, n->aggregateHi); }; }; checkSon: if(n->son) bgpq3_print_nokia_md_prefix(n->son, ff); }; int bgpq3_print_juniper_prefixlist(FILE* f, struct bgpq_expander* b) { fprintf(f,"policy-options {\nreplace:\n prefix-list %s {\n", b->name?b->name:"NN"); sx_radix_tree_foreach(b->tree,bgpq3_print_jprefix,f); fprintf(f," }\n}\n"); return 0; }; int bgpq3_print_juniper_routefilter(FILE* f, struct bgpq_expander* b) { char* c=NULL; if(b->name && (c=strchr(b->name,'/'))) { *c=0; fprintf(f,"policy-options {\n policy-statement %s {\n term %s {\n" "replace:\n from {\n", b->name, c+1); if(b->match) fprintf(f," %s;\n",b->match); } else { fprintf(f,"policy-options {\n policy-statement %s { \n" "replace:\n from {\n", b->name?b->name:"NN"); if(b->match) fprintf(f," %s;\n",b->match); }; if(!sx_radix_tree_empty(b->tree)) { jrfilter_prefixed=1; sx_radix_tree_foreach(b->tree,bgpq3_print_jrfilter,f); } else { fprintf(f," route-filter %s/0 orlonger reject;\n", b->tree->family == AF_INET ? "0.0.0.0" : "::"); }; if(c) { fprintf(f, " }\n }\n }\n}\n"); } else { fprintf(f, " }\n }\n}\n"); }; return 0; }; int bgpq3_print_openbgpd_prefixlist(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; if (sx_radix_tree_empty(b->tree)) { fprintf(f, "# generated prefix-list %s (AS %u) is empty\n", bname, b->asnumber); if (!b->asnumber) fprintf(f, "# use -a to generate \"deny from ASN \" " "instead of this list\n"); }; if (!sx_radix_tree_empty(b->tree) || !b->asnumber) { if(b->name){ if(strcmp(b->name, "NN") != 0) { fprintf(f, "%s=\"", b->name); } } fprintf(f,"prefix { "); sx_radix_tree_foreach(b->tree,bgpq3_print_openbgpd_prefix,f); fprintf(f, "\n\t}"); if(b->name){ if(strcmp(b->name, "NN") != 0) { fprintf(f, "\""); } } fprintf(f, "\n"); } else { fprintf(f, "deny from AS %u\n", b->asnumber); }; return 0; }; int bgpq3_print_openbgpd_prefixset(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; fprintf(f,"prefix-set %s {", b->name); if (!sx_radix_tree_empty(b->tree)) sx_radix_tree_foreach(b->tree,bgpq3_print_openbgpd_prefix,f); fprintf(f, "\n}\n"); return 0; }; int bgpq3_print_cisco_prefixlist(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; seq=b->sequence; fprintf(f,"no %s prefix-list %s\n", (b->family==AF_INET)?"ip":"ipv6",bname); if (!sx_radix_tree_empty(b->tree)) { sx_radix_tree_foreach(b->tree,bgpq3_print_cprefix,f); } else { char seqno[16] = ""; if(b->sequence) { strlcpy(seqno, " seq 1", sizeof(seqno)); }; fprintf(f, "! generated prefix-list %s is empty\n", bname); fprintf(f, "%s prefix-list %s%s deny %s\n", (b->family==AF_INET) ? "ip" : "ipv6", bname, seqno, (b->family==AF_INET) ? "0.0.0.0/0" : "::/0"); }; return 0; }; int bgpq3_print_ciscoxr_prefixlist(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; fprintf(f,"no prefix-set %s\nprefix-set %s\n", bname, bname); sx_radix_tree_foreach(b->tree,bgpq3_print_cprefixxr,f); fprintf(f, "\nend-set\n"); return 0; }; int bgpq3_print_json_prefixlist(FILE* f, struct bgpq_expander* b) { fprintf(f,"{ \"%s\": [", b->name?b->name:"NN"); sx_radix_tree_foreach(b->tree,bgpq3_print_json_prefix,f); fprintf(f,"\n] }\n"); return 0; }; int bgpq3_print_bird_prefixlist(FILE* f, struct bgpq_expander* b) { if (!sx_radix_tree_empty(b->tree)) { fprintf(f,"%s = [", b->name?b->name:"NN"); sx_radix_tree_foreach(b->tree,bgpq3_print_bird_prefix,f); fprintf(f,"\n];\n"); } else { SX_DEBUG(debug_expander, "skip empty prefix-list in BIRD format\n"); }; return 0; }; int bgpq3_print_huawei_prefixlist(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; seq=b->sequence; fprintf(f,"undo ip %s-prefix %s\n", (b->family==AF_INET)?"ip":"ipv6",bname); if (!sx_radix_tree_empty(b->tree)) { sx_radix_tree_foreach(b->tree,bgpq3_print_hprefix,f); } else { fprintf(f, "ip %s-prefix %s deny %s\n", (b->family==AF_INET) ? "ip" : "ipv6", bname, (b->family==AF_INET) ? "0.0.0.0/0" : "::/0"); }; return 0; }; struct fpcbdata { FILE* f; struct bgpq_expander* b; }; void bgpq3_print_format_prefix(struct sx_radix_node* n, void* ff) { char prefix[128]; struct fpcbdata* fpc=(struct fpcbdata*)ff; FILE* f=fpc->f; struct bgpq_expander* b=fpc->b; if(n->isGlue) return; if(!f) f=stdout; memset(prefix, 0, sizeof(prefix)); sx_prefix_snprintf_fmt(&n->prefix, prefix, sizeof(prefix), b->name?b->name:"NN", b->format); fprintf(f, "%s", prefix); }; int bgpq3_print_format_prefixlist(FILE* f, struct bgpq_expander* b) { struct fpcbdata ff = {.f=f, .b=b}; sx_radix_tree_foreach(b->tree,bgpq3_print_format_prefix,&ff); if (strcmp(b->format+strlen(b->format-2), "\n")) fprintf(f, "\n"); return 0; }; int bgpq3_print_nokia_prefixlist(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; fprintf(f,"configure router policy-options\nbegin\nno prefix-list \"%s\"\n", bname); fprintf(f,"prefix-list \"%s\"\n", bname); sx_radix_tree_foreach(b->tree,bgpq3_print_nokia_prefix,f); fprintf(f,"exit\ncommit\n"); return 0; }; int bgpq3_print_cisco_eacl(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; fprintf(f,"no ip access-list extended %s\n", bname); if (!sx_radix_tree_empty(b->tree)) { fprintf(f,"ip access-list extended %s\n", bname); sx_radix_tree_foreach(b->tree,bgpq3_print_ceacl,f); } else { fprintf(f,"! generated access-list %s is empty\n", bname); fprintf(f,"ip access-list extended %s deny any any\n", bname); }; return 0; }; int bgpq3_print_nokia_ipprefixlist(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; fprintf(f,"configure filter match-list\nno %s-prefix-list \"%s\"\n", b->tree->family==AF_INET?"ip":"ipv6", bname); fprintf(f,"%s-prefix-list \"%s\" create\n", b->tree->family==AF_INET?"ip":"ipv6", bname); if (!sx_radix_tree_empty(b->tree)) { sx_radix_tree_foreach(b->tree,bgpq3_print_nokia_ipfilter,f); } else { fprintf(f,"# generated ip-prefix-list %s is empty\n", bname); }; fprintf(f,"exit\n"); return 0; }; int bgpq3_print_nokia_md_prefixlist(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; fprintf(f,"/configure filter match-list\ndelete %s-prefix-list \"%s\"\n", b->tree->family==AF_INET?"ip":"ipv6", bname); fprintf(f,"%s-prefix-list \"%s\" {\n", b->tree->family==AF_INET?"ip":"ipv6", bname); if (!sx_radix_tree_empty(b->tree)) { sx_radix_tree_foreach(b->tree,bgpq3_print_nokia_md_ipfilter,f); } else { fprintf(f,"# generated %s-prefix-list %s is empty\n", b->tree->family==AF_INET?"ip":"ipv6", bname); }; fprintf(f,"}\n"); return 0; }; int bgpq3_print_nokia_md_ipprefixlist(FILE* f, struct bgpq_expander* b) { bname=b->name ? b->name : "NN"; fprintf(f,"/configure policy-options\ndelete prefix-list \"%s\"\n", bname); fprintf(f,"prefix-list \"%s\" {\n", bname); if (!sx_radix_tree_empty(b->tree)) { sx_radix_tree_foreach(b->tree,bgpq3_print_nokia_md_prefix,f); }; fprintf(f,"}\n"); return 0; }; int bgpq3_print_prefixlist(FILE* f, struct bgpq_expander* b) { switch(b->vendor) { case V_JUNIPER: return bgpq3_print_juniper_prefixlist(f,b); case V_CISCO: return bgpq3_print_cisco_prefixlist(f,b); case V_CISCO_XR: return bgpq3_print_ciscoxr_prefixlist(f,b); case V_JSON: return bgpq3_print_json_prefixlist(f,b); case V_BIRD: return bgpq3_print_bird_prefixlist(f,b); case V_OPENBGPD: return bgpq3_print_openbgpd_prefixlist(f,b); case V_FORMAT: return bgpq3_print_format_prefixlist(f,b); case V_NOKIA: return bgpq3_print_nokia_prefixlist(f,b); case V_NOKIA_MD: return bgpq3_print_nokia_md_ipprefixlist(f,b); case V_HUAWEI: return bgpq3_print_huawei_prefixlist(f,b); }; return 0; }; int bgpq3_print_eacl(FILE* f, struct bgpq_expander* b) { switch(b->vendor) { case V_JUNIPER: return bgpq3_print_juniper_routefilter(f,b); case V_CISCO: return bgpq3_print_cisco_eacl(f,b); case V_CISCO_XR: sx_report(SX_FATAL, "unreachable point\n"); case V_JSON: sx_report(SX_FATAL, "unreachable point\n"); case V_BIRD: sx_report(SX_FATAL, "unreachable point\n"); case V_OPENBGPD: return bgpq3_print_openbgpd_prefixset(f,b); case V_FORMAT: sx_report(SX_FATAL, "unreachable point\n"); case V_NOKIA: return bgpq3_print_nokia_ipprefixlist(f,b); case V_NOKIA_MD: return bgpq3_print_nokia_md_prefixlist(f,b); case V_HUAWEI: return sx_report(SX_FATAL, "unreachable point\n"); }; return 0; }; int bgpq3_print_juniper_route_filter_list(FILE* f, struct bgpq_expander* b) { fprintf(f, "policy-options {\nreplace:\n route-filter-list %s {\n", b->name?b->name:"NN"); if (sx_radix_tree_empty(b->tree)) { fprintf(f, " %s/0 orlonger reject;\n", b->tree->family == AF_INET ? "0.0.0.0" : "::"); } else { jrfilter_prefixed=0; sx_radix_tree_foreach(b->tree,bgpq3_print_jrfilter,f); }; fprintf(f, " }\n}\n"); return 0; }; int bgpq3_print_route_filter_list(FILE* f, struct bgpq_expander* b) { switch(b->vendor) { case V_JUNIPER: return bgpq3_print_juniper_route_filter_list(f,b); default: sx_report(SX_FATAL, "unreachable point\n"); }; return 0; }; bgpq3-0.1.36.1/bgpq_expander.c000066400000000000000000000551661416330673000157570ustar00rootroot00000000000000#if HAVE_CONFIG_H #include "config.h" #endif #include #include #if HAVE_SYS_SELECT_H #include #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include "bgpq3.h" #include "sx_report.h" #include "sx_maxsockbuf.h" int debug_expander=0; int pipelining=1; int expand_as23456=0; int expand_special_asn=0; static inline int tentry_cmp(struct sx_tentry* a, struct sx_tentry* b) { return strcasecmp(a->text, b->text); }; RB_GENERATE(tentree, sx_tentry, entry, tentry_cmp); int bgpq_expander_init(struct bgpq_expander* b, int af) { if(!af) af=AF_INET; if(!b) return 0; memset(b,0,sizeof(struct bgpq_expander)); b->tree=sx_radix_tree_new(af); if(!b->tree) goto fixups; b->family=af; b->sources=""; b->name="NN"; b->aswidth=8; b->asn32s[0]=malloc(8192); if(!b->asn32s[0]) { sx_report(SX_FATAL,"Unable to allocate 8192 bytes: %s\n", strerror(errno)); exit(1); }; memset(b->asn32s[0],0,8192); b->identify=1; b->server="whois.radb.net"; b->port="43"; STAILQ_INIT(&b->wq); STAILQ_INIT(&b->rq); STAILQ_INIT(&b->rsets); STAILQ_INIT(&b->macroses); return 1; fixups: /* if(b->tree) XXXXXXXXXXXXX sx_radix_tree_destroy(b->tree); */ b->tree=NULL; free(b); return 0; }; int bgpq_expander_add_asset(struct bgpq_expander* b, char* as) { struct sx_slentry* le; if(!b || !as) return 0; le=sx_slentry_new(as); STAILQ_INSERT_TAIL(&b->macroses, le, next); return 1; }; int bgpq_expander_add_rset(struct bgpq_expander* b, char* rs) { struct sx_slentry* le; if(!b || !rs) return 0; le=sx_slentry_new(rs); if(!le) return 0; STAILQ_INSERT_TAIL(&b->rsets, le, next); return 1; }; int bgpq_expander_add_already(struct bgpq_expander* b, char* rs) { struct sx_tentry* le, lkey; lkey.text = rs; if (RB_FIND(tentree, &b->already, &lkey)) return 1; le = sx_tentry_new(rs); RB_INSERT(tentree, &b->already, le); return 1; }; int bgpq_expander_add_stop(struct bgpq_expander* b, char* rs) { struct sx_tentry* le, lkey; lkey.text = rs; if (RB_FIND(tentree, &b->stoplist, &lkey)) return 1; le = sx_tentry_new(rs); RB_INSERT(tentree, &b->stoplist, le); return 1; }; int bgpq_expander_add_as(struct bgpq_expander* b, char* as) { char* eoa; uint32_t asno; if(!b || !as) return 0; asno=strtoul(as+2,&eoa,10); if(eoa && (*eoa!='.' && *eoa!=0)) { sx_report(SX_ERROR,"Invalid symbol in AS number: '%c' in %s\n", *eoa, as); return 0; }; if(*eoa=='.' || asno>65535) { if(b->asn32 || b->generation>=T_PREFIXLIST) { uint32_t asn1; if(asno>65535) { asn1=asno%65536; asno/=65536; } else if(eoa && *(eoa+1)) { asn1=strtoul(eoa+1,&eoa,10); } else { sx_report(SX_ERROR, "Invalid AS number: '%s'\n", as); return 0; }; if(eoa && *eoa!=0) { sx_report(SX_ERROR,"Invalid symbol in AS number: '%c' in %s\n", *eoa, as); return 0; }; if(asn1>65535) { sx_report(SX_ERROR,"Invalid AS number in %s\n", as); return 0; }; if(!expand_special_asn && (((asno*65536+asn1)>=4200000000ul) || ((asno*65536+asn1)>=64496 && (asno*65536+asn1) <= 65551))) { return 0; }; if(!b->asn32s[asno]) { b->asn32s[asno]=malloc(8192); if(!b->asn32s[asno]) { sx_report(SX_FATAL, "Unable to allocate 8192 bytes: %s." " Unable to add asn32 %s to future expansion\n", strerror(errno), as); return 0; }; memset(b->asn32s[asno],0,8192); }; b->asn32s[asno][asn1/8]|=(0x80>>(asn1%8)); } else if(!b->asn32) { b->asn32s[0][23456/8]|=(0x80>>(23456%8)); }; return 1; }; if(asno<1 || asno>65535) { sx_report(SX_ERROR,"Invalid AS number in %s\n", as); return 0; }; if(asno==23456 && !expand_as23456) return 0; if(!expand_special_asn && (asno>=64496 && asno <= 65536)) return 0; b->asn32s[0][asno/8]|=(0x80>>(asno%8)); return 1; }; int bgpq_expander_add_prefix(struct bgpq_expander* b, char* prefix) { struct sx_prefix p; if(!sx_prefix_parse(&p,0,prefix)) { sx_report(SX_ERROR,"Unable to parse prefix %s\n", prefix); return 0; } else if(p.family!=b->family) { SX_DEBUG(debug_expander,"Ignoring prefix %s with wrong address family\n" ,prefix); return 0; }; if(b->maxlen && p.masklen>b->maxlen) { SX_DEBUG(debug_expander, "Ignoring prefix %s: masklen %i > max " "masklen %u\n", prefix, p.masklen, b->maxlen); return 0; }; sx_radix_tree_insert(b->tree,&p); return 1; }; int bgpq_expander_add_prefix_range(struct bgpq_expander* b, char* prefix) { return sx_prefix_range_parse(b->tree, b->family, b->maxlen, prefix); }; int bgpq_expanded_macro(char* as, struct bgpq_expander* ex, struct bgpq_request* req) { bgpq_expander_add_as(ex,as); return 1; }; struct bgpq_request* bgpq_pipeline(struct bgpq_expander* b, int (*callback)(char*, struct bgpq_expander* b, struct bgpq_request* req), void* udata, char* fmt, ...); int bgpq_expand_irrd(struct bgpq_expander* b, int (*callback)(char*, struct bgpq_expander* b, struct bgpq_request* req), void* udata, char* fmt, ...); int bgpq_expanded_macro_limit(char* as, struct bgpq_expander* b, struct bgpq_request* req) { if (!strncasecmp(as, "AS-", 3) || strchr(as, '-') || strchr(as, ':')) { struct sx_tentry tkey = { .text = as }; if (RB_FIND(tentree, &b->already, &tkey)) { SX_DEBUG(debug_expander>2,"%s is already expanding, ignore\n", as); return 0; }; if (RB_FIND(tentree, &b->stoplist, &tkey)) { SX_DEBUG(debug_expander>2,"%s is in the stoplist, ignore\n", as); return 0; }; if(!b->maxdepth || (b->cdepth + 1 < b->maxdepth && req->depth + 1 < b->maxdepth)) { bgpq_expander_add_already(b,as); if (pipelining) { struct bgpq_request* req1 = bgpq_pipeline(b, bgpq_expanded_macro_limit, NULL, "!i%s\n", as); req1->depth = req->depth+1; } else { b->cdepth++; bgpq_expand_irrd(b, bgpq_expanded_macro_limit, NULL, "!i%s\n", as); b->cdepth--; }; } else { SX_DEBUG(debug_expander>2, "ignoring %s at depth %i\n", as, b->cdepth?(b->cdepth+1):(req->depth+1)); }; } else if(!strncasecmp(as, "AS", 2)) { struct sx_tentry tkey = { .text = as }; if (RB_FIND(tentree, &b->stoplist, &tkey)) { SX_DEBUG(debug_expander>2,"%s is in the stoplist, ignore\n", as); return 0; }; if(bgpq_expander_add_as(b, as)) { SX_DEBUG(debug_expander>2, ".. added asn %s\n", as); } else { SX_DEBUG(debug_expander, ".. some error adding as %s (in " "response to %s)\n", as, req->request); }; } else if (!strcasecmp(as, "ANY")) { return 0; } else { sx_report(SX_ERROR, "unexpected object '%s' in expanded_macro_limit " "(in response to %s)\n", as, req->request); }; return 1; }; int bgpq_expanded_prefix(char* as, struct bgpq_expander* ex, struct bgpq_request* req __attribute__((unused))) { char* d = strchr(as, '^'); if (!d) bgpq_expander_add_prefix(ex,as); else bgpq_expander_add_prefix_range(ex,as); return 1; }; int bgpq_expanded_v6prefix(char* prefix, struct bgpq_expander* ex, struct bgpq_request* req) { char* d = strchr(prefix, '^'); if (!d) bgpq_expander_add_prefix(ex,prefix); else bgpq_expander_add_prefix_range(ex,prefix); return 1; }; int bgpq_pipeline_dequeue(int fd, struct bgpq_expander* b); static struct bgpq_request* bgpq_request_alloc(char* request, int (*callback)(char*, struct bgpq_expander*, struct bgpq_request*), void* udata) { struct bgpq_request* bp = malloc(sizeof(struct bgpq_request)); if (!bp) return NULL; memset(bp, 0, sizeof(struct bgpq_request)); bp->request = strdup(request); bp->offset = 0; bp->size = strlen(bp->request); bp->callback = callback; bp->udata = udata; return bp; }; static void bgpq_request_free(struct bgpq_request* req) { if (req->request) free(req->request); free(req); }; struct bgpq_request* bgpq_pipeline(struct bgpq_expander* b, int (*callback)(char*, struct bgpq_expander*, struct bgpq_request*), void* udata, char* fmt, ...) { char request[128]; int ret; struct bgpq_request* bp=NULL; va_list ap; va_start(ap,fmt); vsnprintf(request,sizeof(request),fmt,ap); va_end(ap); SX_DEBUG(debug_expander,"expander: sending %s", request); bp = bgpq_request_alloc(request, callback, udata); if(!bp) { sx_report(SX_FATAL,"Unable to allocate %lu bytes: %s\n", (unsigned long)sizeof(struct bgpq_request),strerror(errno)); exit(1); }; if (STAILQ_EMPTY(&b->wq)) { ret=write(b->fd, request, bp->size); if (ret < 0) { if (errno == EAGAIN) { STAILQ_INSERT_TAIL(&b->wq, bp, next); return bp; }; sx_report(SX_FATAL, "Error writing request: %s\n", strerror(errno)); }; bp->offset=ret; if (ret == bp->size) { STAILQ_INSERT_TAIL(&b->rq, bp, next); } else { STAILQ_INSERT_TAIL(&b->wq, bp, next); }; } else STAILQ_INSERT_TAIL(&b->wq, bp, next); return bp; }; static void bgpq_expander_invalidate_asn(struct bgpq_expander* b, const char* q) { if (!strncmp(q, "!gas", 4) || !strncmp(q, "!6as", 4)) { char* eptr; unsigned long asn = strtoul(q+4, &eptr, 10), asn0, asn1 = 0; if (!asn || asn == ULONG_MAX || asn >= 4294967295 || (eptr && *eptr != '\n')) { sx_report(SX_ERROR, "some problem invalidating asn %s\n", q); return; }; asn1 = asn % 65536; asn0 = asn / 65536; if (!b->asn32s[asn0] || !(b->asn32s[asn0][asn1/8] & (0x80 >> (asn1 % 8)))) { sx_report(SX_NOTICE, "strange, invalidating inactive asn %lu(%s)\n", asn, q); } else { b->asn32s[asn0][asn1/8] &= ~(0x80 >> (asn1 % 8)); }; }; }; static void bgpq_write(struct bgpq_expander* b) { while(!STAILQ_EMPTY(&b->wq)) { struct bgpq_request* req = STAILQ_FIRST(&b->wq); int ret = write(b->fd, req->request+req->offset, req->size-req->offset); if (ret < 0) { if (errno == EAGAIN) return; sx_report(SX_FATAL, "error writing data: %s\n", strerror(errno)); }; if (ret == req->size - req->offset) { /* this request was dequeued */ STAILQ_REMOVE_HEAD(&b->wq, next); STAILQ_INSERT_TAIL(&b->rq, req, next); } else { req->offset += ret; break; }; }; }; static int bgpq_selread(struct bgpq_expander* b, char* buffer, int size) { fd_set rfd, wfd; int ret; struct timeval timeout = {30, 0}; repeat: FD_ZERO(&rfd); FD_SET(b->fd, &rfd); FD_ZERO(&wfd); if (!STAILQ_EMPTY(&b->wq)) FD_SET(b->fd, &wfd); ret = select(b->fd+1, &rfd, &wfd, NULL, &timeout); if (ret == 0) sx_report(SX_FATAL, "select timeout\n"); else if (ret == -1 && errno == EINTR) goto repeat; else if (ret == -1) sx_report(SX_FATAL, "select error %i: %s\n", errno, strerror(errno)); if (!STAILQ_EMPTY(&b->wq) && FD_ISSET(b->fd, &wfd)) bgpq_write(b); if (FD_ISSET(b->fd, &rfd)) return read(b->fd, buffer, size); goto repeat; }; int bgpq_read(struct bgpq_expander* b) { static char response[256]; static int off = 0; if (!STAILQ_EMPTY(&b->wq)) bgpq_write(b); while(!STAILQ_EMPTY(&b->rq)) { struct bgpq_request* req = STAILQ_FIRST(&b->rq); SX_DEBUG(debug_expander>2, "waiting for answer to %s, init %i '%.*s'\n", req->request, off, off, response); int ret = 0; char* cres; if ((cres=strchr(response, '\n'))!=NULL) goto have; repeat: ret = bgpq_selread(b, response+off, sizeof(response)-off); if (ret < 0) { if (errno == EAGAIN) goto repeat; sx_report(SX_FATAL,"Error reading data from IRRd: %s (dequeue)\n", strerror(errno)); } else if (ret == 0) { sx_report(SX_FATAL,"EOF from IRRd (dequeue)\n"); }; off += ret; if (!(cres=strchr(response, '\n'))) goto repeat; have: SX_DEBUG(debug_expander>5, "got response of %.*s\n", off, response); if(response[0]=='A') { char* eon, *c; unsigned long togot=strtoul(response+1,&eon,10); char* recvbuffer=malloc(togot+2); int offset = 0; if (!recvbuffer) { sx_report(SX_FATAL, "error allocating %lu bytes: %s\n", togot+2, strerror(errno)); }; memset(recvbuffer,0,togot+2); if(!eon || *eon!='\n') { sx_report(SX_ERROR,"A-code finished with wrong char '%c'(%s)\n", eon?*eon:'0',response); exit(1); }; if (off - ((eon+1) - response) > togot) { /* full response and more data is already in buffer */ memcpy(recvbuffer, eon+1, togot); offset = togot; memmove(response, eon+1+togot, off-((eon+1)-response)-togot); off -= togot + ((eon+1)-response); memset(response+off, 0, sizeof(response)-off); } else { /* response is not yet fully buffered */ memcpy(recvbuffer, eon+1, off - ((eon+1)-response)); offset = off - ((eon+1) - response); memset(response, 0, sizeof(response)); off = 0; }; SX_DEBUG(debug_expander>5, "starting read with ready '%.*s', waiting for %lu\n", offset, recvbuffer, togot-offset); if (off > 0) goto have3; if (offset == togot) goto reread2; reread: ret = bgpq_selread(b, recvbuffer+offset, togot-offset); if (ret < 0) { if (errno == EAGAIN) goto reread; sx_report(SX_FATAL,"Error reading IRRd: %s (dequeue, result)\n", strerror(errno)); } else if (ret == 0) { sx_report(SX_FATAL,"EOF from IRRd (dequeue, result)\n"); }; SX_DEBUG(debug_expander>5, "Read1: got '%.*s'\n", ret, recvbuffer+offset); offset+=ret; if(offset < togot) { SX_DEBUG(debug_expander>5, "expected %lu, got %lu expanding %s", togot, strlen(recvbuffer), req->request); goto reread; }; reread2: ret = bgpq_selread(b, response+off, sizeof(response) - off); if (ret < 0) { if (errno == EAGAIN) goto reread2; sx_report(SX_FATAL,"Error reading IRRd: %s (dequeue,final)\n", strerror(errno)); } else if (ret == 0) { sx_report(SX_FATAL,"EOF from IRRd (dequeue,final)\n"); }; SX_DEBUG(debug_expander>5, "Read2: got '%.*s'\n", ret, response+off); off+=ret; have3: if (!(cres = strchr(response, '\n'))) goto reread2; SX_DEBUG(debug_expander>=3,"Got %s (%lu bytes of %lu) in response " "to %sfinal code: %.*s",recvbuffer,strlen(recvbuffer),togot, req->request,off,response); for(c=recvbuffer; ccallback(c, b, req); c+=spn+1; }; assert(c == recvbuffer+togot); memset(recvbuffer,0,togot+2); free(recvbuffer); } else if(response[0]=='C') { /* No data */ SX_DEBUG(debug_expander,"No data expanding %s\n", req->request); if (b->validate_asns) bgpq_expander_invalidate_asn(b, req->request); } else if(response[0]=='D') { /* .... */ SX_DEBUG(debug_expander,"Key not found expanding %s\n", req->request); if (b->validate_asns) bgpq_expander_invalidate_asn(b, req->request); } else if(response[0]=='E') { sx_report(SX_ERROR, "Multiple keys expanding %s: %s\n", req->request, response); } else if(response[0]=='F') { sx_report(SX_ERROR, "Error expanding %s: %s\n", req->request, response); } else { sx_report(SX_ERROR,"Wrong reply: %s to %s\n", response, req->request); exit(1); }; memmove(response, cres+1, off-((cres+1)-response)); off -= (cres+1)-response; memset(response+off, 0, sizeof(response) - off); SX_DEBUG(debug_expander>5, "fixed response of %i, %.*s\n", off, off, response); STAILQ_REMOVE_HEAD(&b->rq, next); b->piped--; bgpq_request_free(req); }; return 0; }; int bgpq_expand_irrd(struct bgpq_expander* b, int (*callback)(char*, struct bgpq_expander*, struct bgpq_request* ), void* udata, char* fmt, ...) { char request[128], response[128]; va_list ap; int ret, off = 0; struct bgpq_request *req; va_start(ap,fmt); vsnprintf(request,sizeof(request),fmt,ap); va_end(ap); req = bgpq_request_alloc(request, callback, udata); SX_DEBUG(debug_expander,"expander: sending '%s'\n", request); ret=write(b->fd, request, strlen(request)); if(ret!=strlen(request)) { sx_report(SX_FATAL,"Partial write to IRRd, only %i bytes written: %s\n", ret, strerror(errno)); exit(1); }; memset(response,0,sizeof(response)); repeat: ret = bgpq_selread(b, response+off, sizeof(response)-off); if (ret < 0) { sx_report(SX_ERROR, "Error reading IRRd: %s\n", strerror(errno)); exit(1); } else if (ret == 0) { sx_report(SX_FATAL, "EOF reading IRRd\n"); exit(1); }; off += ret; if (strchr(response, '\n') == NULL) goto repeat; SX_DEBUG(debug_expander>2,"expander: initially got %lu bytes, '%s'\n", (unsigned long)strlen(response),response); if(response[0]=='A') { char* eon, *c; long togot=strtoul(response+1,&eon,10); char *recvbuffer = malloc(togot+2); int offset = 0; if (!recvbuffer) { sx_report(SX_FATAL, "Error allocating %lu bytes: %s\n", togot+2, strerror(errno)); }; if(eon && *eon!='\n') { sx_report(SX_ERROR,"A-code finised with wrong char '%c' (%s)\n", *eon,response); exit(1); }; if (off - ((eon+1)-response) > togot) { memcpy(recvbuffer, eon+1, togot); offset = togot; memmove(response, eon+1+togot, off - ((eon+1)-response) - togot); off -= togot + ((eon+1)-response); memset(response+off, 0, sizeof(response)-off); } else { memcpy(recvbuffer, eon+1, off - ((eon+1)-response)); offset = off - ((eon+1) - response); memset(response, 0, sizeof(response)); off = 0; }; if (off > 0) goto have3; if (offset == togot) goto reread2; reread: ret = bgpq_selread(b, recvbuffer+offset, togot-offset); if (ret == 0) { sx_report(SX_FATAL,"EOF from IRRd (expand,result)\n"); } else if (ret < 0) { sx_report(SX_FATAL,"Error reading IRRd: %s (expand,result)\n", strerror(errno)); }; offset += ret; if (offset < togot) goto reread; reread2: ret = bgpq_selread(b, response+off, sizeof(response)-off); if (ret < 0) { sx_report(SX_FATAL, "error reading IRRd: %s\n", strerror(errno)); exit(1); } else if (ret == 0) { sx_report(SX_FATAL, "eof reading IRRd\n"); exit(1); }; off += ret; have3: if (!strchr(response, '\n')) goto reread2; SX_DEBUG(debug_expander>2,"expander: final reply of %lu bytes, " "%.*sreturn code %.*s", (unsigned long)strlen(recvbuffer), offset, recvbuffer, off, response); for(c=recvbuffer; cvalidate_asns) bgpq_expander_invalidate_asn(b, request); } else if(response[0]=='D') { /* ... */ if (b->validate_asns) bgpq_expander_invalidate_asn(b, request); } else if(response[0]=='E') { /* XXXXXX */ } else if(response[0]=='F') { /* XXXXXX */ } else { sx_report(SX_ERROR,"Wrong reply: %s\n", response); exit(0); }; bgpq_request_free(req); return 0; }; int bgpq_expand(struct bgpq_expander* b) { int fd=-1, err, ret; struct sx_slentry* mc; struct addrinfo hints, *res=NULL, *rp; struct linger sl; sl.l_onoff = 1; sl.l_linger = 5; memset(&hints,0,sizeof(struct addrinfo)); hints.ai_socktype=SOCK_STREAM; err=getaddrinfo(b->server,b->port,&hints,&res); if(err) { sx_report(SX_ERROR,"Unable to resolve %s: %s\n", b->server, gai_strerror(err)); exit(1); }; for(rp=res; rp; rp=rp->ai_next) { fd=socket(rp->ai_family,rp->ai_socktype,0); if(fd==-1) { if(errno==EPROTONOSUPPORT || errno==EAFNOSUPPORT) continue; sx_report(SX_ERROR,"Unable to create socket: %s\n", strerror(errno)); exit(1); }; if (setsockopt(fd, SOL_SOCKET, SO_LINGER, &sl, sizeof(struct linger))) { sx_report(SX_ERROR,"Unable to set linger on socket: %s\n", strerror(errno)); shutdown(fd, SHUT_RDWR); close(fd); exit(1); }; err=connect(fd,rp->ai_addr,rp->ai_addrlen); if(err) { shutdown(fd,SHUT_RDWR); close(fd); fd=-1; continue; }; err=sx_maxsockbuf(fd,SO_SNDBUF); if(err>0) { SX_DEBUG(debug_expander, "Acquired sendbuf of %i bytes\n", err); } else { shutdown(fd, SHUT_RDWR); close(fd); fd=-1; continue; }; break; }; freeaddrinfo(res); if(fd == -1) { /* all our attempts to connect failed */ sx_report(SX_ERROR,"All attempts to connect %s failed, last" " error: %s\n", b->server, strerror(errno)); exit(1); }; b->fd = fd; if((ret=write(fd, "!!\n", 3))!=3) { sx_report(SX_ERROR,"Partial write to IRRd: %i bytes, %s\n", ret, strerror(errno)); exit(1); }; if(b->sources && b->sources[0]!=0) { int slen = strlen(b->sources)+4; if (slen < 128) slen = 128; char sources[slen]; snprintf(sources,sizeof(sources),"!s%s\n", b->sources); SX_DEBUG(debug_expander,"Requesting sources %s", sources); write(fd, sources, strlen(sources)); memset(sources, 0, slen); read(fd, sources, slen); SX_DEBUG(debug_expander,"Got answer %s", sources); if(sources[0]!='C') { sx_report(SX_ERROR, "Invalid source(s) '%s': %s\n", b->sources, sources); exit(1); }; }; if(b->identify) { char ident[128]; snprintf(ident,sizeof(ident),"!n" PACKAGE_STRING "\n"); write(fd, ident, strlen(ident)); read(fd, ident, sizeof(ident)); }; if (pipelining) fcntl(fd, F_SETFL, O_NONBLOCK|(fcntl(fd, F_GETFL))); STAILQ_FOREACH(mc, &b->macroses, next) { if (!b->maxdepth && RB_EMPTY(&b->stoplist)) { bgpq_expand_irrd(b, bgpq_expanded_macro, b, "!i%s,1\n", mc->text); } else { bgpq_expander_add_already(b,mc->text); if (pipelining) { bgpq_pipeline(b, bgpq_expanded_macro_limit, NULL, "!i%s\n", mc->text); } else { bgpq_expand_irrd(b, bgpq_expanded_macro_limit, NULL, "!i%s\n", mc->text); }; }; }; if(pipelining) { if(!STAILQ_EMPTY(&b->wq)) bgpq_write(b); if (!STAILQ_EMPTY(&b->rq)) bgpq_read(b); }; if(b->generation>=T_PREFIXLIST || b->validate_asns) { uint32_t i, j, k; STAILQ_FOREACH(mc, &b->rsets, next) { if(b->family==AF_INET) { bgpq_expand_irrd(b, bgpq_expanded_prefix, NULL, "!i%s,1\n", mc->text); } else { bgpq_expand_irrd(b, bgpq_expanded_v6prefix, NULL, "!i%s,1\n", mc->text); }; }; for(k=0;kasn32s)/sizeof(unsigned char*);k++) { if(!b->asn32s[k]) continue; for(i=0;i<8192;i++) { for(j=0;j<8;j++) { if(b->asn32s[k][i]&(0x80>>j)) { if(b->family==AF_INET6) { if(!pipelining) { bgpq_expand_irrd(b, bgpq_expanded_v6prefix, NULL, "!6as%" PRIu32 "\n", (k<<16)+i*8+j); } else { bgpq_pipeline(b, bgpq_expanded_v6prefix, NULL, "!6as%" PRIu32 "\n", (k<<16)+i*8+j); }; } else { if(!pipelining) { bgpq_expand_irrd(b, bgpq_expanded_prefix, NULL, "!gas%" PRIu32 "\n", (k<<16)+i*8+j); } else { bgpq_pipeline(b, bgpq_expanded_prefix, NULL, "!gas%" PRIu32 "\n", (k<<16)+i*8+j); }; }; }; }; }; }; if(pipelining) { if(!STAILQ_EMPTY(&b->wq)) bgpq_write(b); if (!STAILQ_EMPTY(&b->rq)) bgpq_read(b); }; }; write(fd, "!q\n",3); if (pipelining) { int fl = fcntl(fd, F_GETFL); fl &= ~O_NONBLOCK; fcntl(fd, F_SETFL, fl); }; shutdown(fd, SHUT_RDWR); close(fd); return 1; }; bgpq3-0.1.36.1/config.h.in000066400000000000000000000037151416330673000150100ustar00rootroot00000000000000/* config.h.in. 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M.I.T. makes no representations about the # suitability of this software for any purpose. It is provided "as is" # without express or implied warranty. # # 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. It can only install one file at a time, a restriction # shared with many OS's install programs. # set DOITPROG to echo to test this script # Don't use :- since 4.3BSD and earlier shells don't like it. doit="${DOITPROG-}" # put in absolute paths if you don't have them in your path; or use env. vars. mvprog="${MVPROG-mv}" cpprog="${CPPROG-cp}" chmodprog="${CHMODPROG-chmod}" chownprog="${CHOWNPROG-chown}" chgrpprog="${CHGRPPROG-chgrp}" stripprog="${STRIPPROG-strip}" rmprog="${RMPROG-rm}" mkdirprog="${MKDIRPROG-mkdir}" transformbasename="" transform_arg="" instcmd="$mvprog" chmodcmd="$chmodprog 0755" chowncmd="" chgrpcmd="" stripcmd="" rmcmd="$rmprog -f" mvcmd="$mvprog" src="" dst="" dir_arg="" while [ x"$1" != x ]; do case $1 in -c) instcmd="$cpprog" shift continue;; -d) dir_arg=true shift continue;; -m) chmodcmd="$chmodprog $2" shift shift continue;; -o) chowncmd="$chownprog $2" shift shift continue;; -g) chgrpcmd="$chgrpprog $2" shift shift continue;; -s) stripcmd="$stripprog" shift continue;; -t=*) transformarg=`echo $1 | sed 's/-t=//'` shift continue;; -b=*) transformbasename=`echo $1 | sed 's/-b=//'` shift continue;; *) if [ x"$src" = x ] then src=$1 else # this colon is to work around a 386BSD /bin/sh bug : dst=$1 fi shift continue;; esac done if [ x"$src" = x ] then echo "install: no input file specified" exit 1 else true fi if [ x"$dir_arg" != x ]; then dst=$src src="" if [ -d $dst ]; then instcmd=: chmodcmd="" else instcmd=mkdir fi else # Waiting for this to be detected by the "$instcmd $src $dsttmp" command # might cause directories to be created, which would be especially bad # if $src (and thus $dsttmp) contains '*'. if [ -f $src -o -d $src ] then true else echo "install: $src does not exist" exit 1 fi if [ x"$dst" = x ] then echo "install: no destination specified" exit 1 else true fi # If destination is a directory, append the input filename; if your system # does not like double slashes in filenames, you may need to add some logic if [ -d $dst ] then dst="$dst"/`basename $src` else true fi fi ## this sed command emulates the dirname command dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'` # Make sure that the destination directory exists. # this part is taken from Noah Friedman's mkinstalldirs script # Skip lots of stat calls in the usual case. if [ ! -d "$dstdir" ]; then defaultIFS=' ' IFS="${IFS-${defaultIFS}}" oIFS="${IFS}" # Some sh's can't handle IFS=/ for some reason. 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If we want to # ignore errors from any of these, just make sure not to ignore # errors from the above "$doit $instcmd $src $dsttmp" command. if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi && if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi && if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi && if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi && # Now rename the file to the real destination. $doit $rmcmd -f $dstdir/$dstfile && $doit $mvcmd $dsttmp $dstdir/$dstfile fi && exit 0 bgpq3-0.1.36.1/readme.header000066400000000000000000000011661416330673000153720ustar00rootroot00000000000000 bgpq3-0.1.36.1/strlcpy.c000066400000000000000000000044561416330673000146340ustar00rootroot00000000000000/* $OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp $ */ /* * Copyright (c) 1998 Todd C. Miller * 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. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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. */ #if HAVE_CONFIG_H #include "config.h" #endif #ifndef HAVE_STRLCPY #include #include /* * Copy src to string dst of size siz. At most siz-1 characters * will be copied. Always NUL terminates (unless siz == 0). * Returns strlen(src); if retval >= siz, truncation occurred. */ size_t strlcpy(dst, src, siz) char *dst; const char *src; size_t siz; { char *d = dst; const char *s = src; size_t n = siz; /* Copy as many bytes as will fit */ if (n != 0 && --n != 0) { do { if ((*d++ = *s++) == 0) break; } while (--n != 0); } /* Not enough room in dst, add NUL and traverse rest of src */ if (n == 0) { if (siz != 0) *d = '\0'; /* NUL-terminate dst */ while (*s++) ; } return(s - src - 1); /* count does not include NUL */ } #endif bgpq3-0.1.36.1/sx_maxsockbuf.c000066400000000000000000000036341416330673000160050ustar00rootroot00000000000000#include #include #include #include #include #include #include #include #include #include "sx_report.h" #ifndef SX_MAXSOCKBUF_MAX #define SX_MAXSOCKBUF_MAX (2*1024*1024) #endif int sx_maxsockbuf(int s, int dir) { int optval=0, voptval; int hiconf=-1, loconf=-1; unsigned int voptlen; int phase=0, iterations=0; if(s<0) { sx_report(SX_FATAL,"Unable to maximize sockbuf on invalid socket %i\n", s); exit(1); }; voptlen=sizeof(optval); if(getsockopt(s,SOL_SOCKET,dir,(void*)&optval,&voptlen)==-1) { sx_report(SX_ERROR,"initial getsockopt failed: %s\n", strerror(errno)); return -1; }; for(;;) { iterations++; if(phase==0) optval<<=1; else { if(optval==(hiconf+loconf)/2) break; optval=(hiconf+loconf)/2; }; if(optval>SX_MAXSOCKBUF_MAX && phase==0) break; if(setsockopt(s,SOL_SOCKET,dir,(void*)&optval,sizeof(optval))==-1) { if(phase==0) phase=1; hiconf=optval; continue; } else { loconf=optval; }; voptlen=sizeof(voptval); if(getsockopt(s,SOL_SOCKET,dir,(void*)&voptval,&voptlen)==-1) { sx_report(SX_ERROR,"getsockopt failed: %s\n", strerror(errno)); return -1; } else if(voptval>=1; continue; } else if(phase==1) { phase=2; optval-=2048; continue; } else break; } else if(voptval>=SX_MAXSOCKBUF_MAX) { /* ... and getsockopt not failed and voptval>=optval. Do not allow * to increase sockbuf too much even in case OS permits it */ break; }; }; voptlen=sizeof(voptval); if(getsockopt(s,SOL_SOCKET,dir,(void*)&voptval,&voptlen)==-1) { sx_report(SX_ERROR,"getsockopt(final stage) failed: %s\n", strerror(errno)); return -1; } else { /* printf("Finally got %i bytes of recvspace in %i interations\n", voptval, iterations); */ }; return voptval; }; bgpq3-0.1.36.1/sx_maxsockbuf.h000066400000000000000000000002471416330673000160070ustar00rootroot00000000000000#ifndef SX_MAXSOCKBUF_H_ #define SX_MAXSOCKBUF_H_ /* s - number of opened socket, dir is either SO_SNDBUF or SO_RCVBUF */ int sx_maxsockbuf(int s, int dir); #endif bgpq3-0.1.36.1/sx_prefix.c000066400000000000000000000740311416330673000151370ustar00rootroot00000000000000#if HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include "sx_prefix.h" #include "sx_report.h" int debug_aggregation=0; extern int debug_expander; struct sx_prefix* sx_prefix_alloc(struct sx_prefix* p) { struct sx_prefix* sp=malloc(sizeof(struct sx_prefix)); if(!sp) return NULL; if(p) { *sp=*p; } else { memset(sp,0,sizeof(struct sx_prefix)); }; return sp; }; void sx_prefix_destroy(struct sx_prefix* p) { if(p) free(p); }; void sx_prefix_adjust_masklen(struct sx_prefix* p) { int nbytes=(p->family==AF_INET?4:16); int i; if(p->masklen==nbytes*8) return ; /* mask is all ones */ for(i=nbytes-1;i>p->masklen/8;i--) { p->addr.addrs[i]=0; }; for(i=1;i<=8-p->masklen%8;i++) { p->addr.addrs[p->masklen/8]&=(0xff<addr.addrs, 0, sizeof(q->addr.addrs)); q->family=p->family; q->masklen=p->masklen; for(i=0;imasklen/8;i++) q->addr.addrs[i]=0xff; for(i=1;i<=p->masklen%8;i++) q->addr.addrs[p->masklen/8]|=(1<<(8-i)); }; void sx_prefix_imask(struct sx_prefix* p, struct sx_prefix* q) { int i; memset(q->addr.addrs, 0xff, sizeof(q->addr.addrs)); q->family=p->family; q->masklen=p->masklen; for(i=0;imasklen/8;i++) q->addr.addrs[i]=0; for(i=1;i<=p->masklen%8;i++) q->addr.addrs[p->masklen/8]&=~(1<<(8-i)); }; int sx_prefix_parse(struct sx_prefix* p, int af, char* text) { char* c=NULL; int masklen, ret; char mtext[INET6_ADDRSTRLEN+5]; strlcpy(mtext, text, sizeof(mtext)); c=strchr(mtext,'/'); if(c) { char* eod; *c=0; masklen=strtol(c+1,&eod,10); if(eod && eod[0] && !isspace(eod[0])) { *c='/'; sx_report(SX_ERROR,"Invalid masklen in prefix %s\n", text); goto fixups; }; } else { masklen=-1; }; if(!af) { if(strchr(mtext,':')) af=AF_INET6; else af=AF_INET; }; ret = inet_pton(af, mtext, &p->addr); if(ret != 1) { int aparts[4]; /* contrary to documentation (man inet_ntop on FreeBSD), addresses with leading zeros are not parsed correctly. Try to workaround this issue manually */ if (af==AF_INET && sscanf(mtext, "%i.%i.%i.%i", aparts, aparts+1, aparts+2, aparts+3) == 4 && aparts[0]>=0 && aparts[0]<256 && aparts[1]>=0 && aparts[1]<256 && aparts[2]>=0 && aparts[2]<256 && aparts[3]>=0 && aparts[3]<256) { p->addr.addr.s_addr = htonl((aparts[0]<<24) + (aparts[1]<<16) + (aparts[2]<<8) + aparts[3]); } else { if(c) *c='/'; sx_report(SX_ERROR,"Unable to parse prefix '%s', af=%i (%s), " "ret=%i\n", mtext, af, af==AF_INET ? "inet" : "inet6", ret); goto fixups; }; }; if(af==AF_INET) { if(masklen==-1) p->masklen=32; else { if(masklen<0 || masklen>32) { p->masklen=32; } else { p->masklen=masklen; }; }; } else if(af==AF_INET6) { if(masklen==-1) p->masklen=128; else { if(masklen<0 || masklen>128) { p->masklen=128; } else { p->masklen=masklen; }; }; } else { sx_report(SX_ERROR,"Invalid address family %i\n", af); goto fixups; }; p->family=af; sx_prefix_adjust_masklen(p); if(c) *c='/'; return 1; fixups: return 0; }; int sx_prefix_isbitset(struct sx_prefix* p, int n) { unsigned char s; /* bits outside the prefix considered unset */ if(p->family==AF_INET && (n<0 || n>32)) return 0; else if(p->family==AF_INET6 && (n<0 || n>128)) return 0; s=p->addr.addrs[(n-1)/8]; return (s&(0x80>>((n-1)%8)))?1:0; }; void sx_prefix_setbit(struct sx_prefix* p, int n) { unsigned char* s; if (p->family == AF_INET && (n<0 || n>32)) return; else if (p->family == AF_INET6 && (n<0 || n>128)) return; s=p->addr.addrs+(n-1)/8; (*s)|=0x80>>((n-1)%8); }; int sx_radix_tree_insert_specifics(struct sx_radix_tree* t, struct sx_prefix p, unsigned min, unsigned max) { if (p.masklen >= min) sx_radix_tree_insert(t, &p); if (p.masklen+1 > max) return 1; p.masklen+=1; sx_radix_tree_insert_specifics(t, p, min, max); sx_prefix_setbit(&p, p.masklen); sx_radix_tree_insert_specifics(t, p, min, max); return 1; }; int sx_prefix_range_parse(struct sx_radix_tree* tree, int af, int maxlen, char* text) { char* d=strchr(text, '^'); struct sx_prefix p; unsigned long min, max; if (!d || !d[1]) return 0; *d = 0; if (!sx_prefix_parse(&p, 0, text)) { sx_report(SX_ERROR, "Unable to parse prefix %s^%s\n", text, d+1); return 0; }; *d = '^'; if (af && p.family != af) { SX_DEBUG(debug_expander, "Ignoring prefix %s, wrong af %i\n", text, p.family); return 0; }; if (maxlen && p.masklen > maxlen) { SX_DEBUG(debug_expander, "Ignoring prefix %s, masklen %i > max " "masklen %u\n", text, p.masklen, maxlen); return 0; }; if (d[1] == '-') { min=p.masklen+1; max=maxlen; } else if (d[1] == '+') { min=p.masklen; max=maxlen; } else if (isdigit(d[1])) { char* dm = NULL; min = strtoul(d+1, &dm, 10); if (dm && *dm == '-' && isdigit(dm[1])) { max = strtoul(dm+1, NULL, 10); } else if (dm && *dm) { sx_report(SX_ERROR, "Unable to parse prefix-range %s\n", text); return 0; }; } else { sx_report(SX_ERROR, "Invalid prefix-range %s\n", text); return 0; }; if (min < p.masklen) { sx_report(SX_ERROR, "Invalid prefix-range %s: min %lu < masklen %u\n", text, min, p.masklen); return 0; }; if (af == AF_INET && max > 32) { sx_report(SX_ERROR, "Invalid prefix-range %s: max %lu > 32\n", text, max); return 0; } else if (af == AF_INET6 && max > 128) { sx_report(SX_ERROR, "Invalid ipv6 prefix-range %s: max %lu > 128\n", text, max); return 0; }; if (max > maxlen) max = maxlen; SX_DEBUG(debug_expander, "parsed prefix-range %s as %lu-%lu (maxlen: %u)\n", text, min, max, maxlen); sx_radix_tree_insert_specifics(tree, p, min, max); return 1; }; struct sx_prefix* sx_prefix_new(int af, char* text) { struct sx_prefix* p=NULL; if(!text) return NULL; p=sx_prefix_alloc(NULL); if(!p) return NULL; if(!sx_prefix_parse(p,af,text)) { sx_prefix_destroy(p); return NULL; }; return p; }; int sx_prefix_fprint(FILE* f, struct sx_prefix* p) { char buffer[128]; if(!p) { fprintf(f?f:stdout,"(null)"); return 0; }; inet_ntop(p->family,&p->addr,buffer,sizeof(buffer)); return fprintf(f?f:stdout,"%s/%i",buffer,p->masklen); }; int sx_prefix_snprintf_sep(struct sx_prefix* p, char* rbuffer, int srb, char* sep) { char buffer[128]; if(!sep) sep="/"; if(!p) { snprintf(rbuffer,srb,"(null)"); return 0; }; inet_ntop(p->family,&p->addr,buffer,sizeof(buffer)); return snprintf(rbuffer,srb,"%s%s%i",buffer,sep,p->masklen); }; int sx_prefix_snprintf(struct sx_prefix* p, char* rbuffer, int srb) { return sx_prefix_snprintf_sep(p, rbuffer, srb, "/"); }; int sx_prefix_snprintf_fmt(struct sx_prefix* p, char* buffer, int size, const char* name, const char* format) { unsigned off=0; const char* c=format; struct sx_prefix q; while(*c) { if(*c=='%') { switch(*(c+1)) { case 'r': case 'n': inet_ntop(p->family,&p->addr,buffer+off,size-off); off=strlen(buffer); break; case 'l': off+=snprintf(buffer+off,size-off,"%i",p->masklen); break; case '%': buffer[off++]='%'; break; case 'N': off+=snprintf(buffer+off,size-off,"%s",name); break; case 'm': sx_prefix_mask(p, &q); inet_ntop(p->family,&q.addr,buffer+off,size-off); off=strlen(buffer); break; case 'i': sx_prefix_imask(p, &q); inet_ntop(p->family,&q.addr,buffer+off,size-off); off=strlen(buffer); break; default : sx_report(SX_ERROR, "Unknown format char '%c'\n", *(c+1)); return 0; }; c+=2; } else if (*c=='\\') { switch(*(c+1)) { case 'n': buffer[off++]='\n'; break; case 't': buffer[off++]='\t'; break; case '\\': buffer[off++]='\\'; break; default: buffer[off++]=*(c+1); break; }; c+=2; } else { buffer[off++]=*c; c++; }; }; return strlen(buffer); }; int sx_prefix_jsnprintf(struct sx_prefix* p, char* rbuffer, int srb) { char buffer[128]; if(!p) { snprintf(rbuffer,srb,"(null)"); return 0; }; inet_ntop(p->family,&p->addr,buffer,sizeof(buffer)); return snprintf(rbuffer,srb,"%s\\/%i",buffer,p->masklen); }; struct sx_radix_tree* sx_radix_tree_new(int af) { struct sx_radix_tree* rt=malloc(sizeof(struct sx_radix_tree)); if(!rt) { return NULL; }; memset(rt,0,sizeof(struct sx_radix_tree)); rt->family=af; return rt; }; int sx_radix_tree_empty(struct sx_radix_tree* t) { return t->head == NULL; }; struct sx_radix_node* sx_radix_node_new(struct sx_prefix* prefix) { struct sx_radix_node* rn=malloc(sizeof(struct sx_radix_node)); if(!rn) return NULL; memset(rn,0,sizeof(struct sx_radix_node)); if(prefix) { rn->prefix=*prefix; /* structure copy */ }; return rn; }; int sx_prefix_eqbits(struct sx_prefix* a, struct sx_prefix* b) { int i; int nbytes=(a->family==AF_INET?4:16); for(i=0;iaddr.addrs[i]==b->addr.addrs[i]) continue; else { int j; for(j=0;j<8 && i*8+j<=a->masklen && i*8+j<=b->masklen;j++) { if((a->addr.addrs[i]&(0x80>>j))!=(b->addr.addrs[i]&(0x80>>j))) return i*8+j; }; }; }; if(a->masklenmasklen) return a->masklen; return b->masklen; }; struct sx_prefix* sx_prefix_overlay(struct sx_prefix* p, int n) { struct sx_prefix* sp=sx_prefix_alloc(p); sp->masklen=n; sx_prefix_adjust_masklen(sp); return sp; }; void sx_radix_tree_unlink(struct sx_radix_tree* tree, struct sx_radix_node* node) { next: if(node->r && node->l) { node->isGlue=1; } else if(node->r) { if(node->parent) { if(node->parent->r==node) { node->parent->r=node->r; node->r->parent=node->parent; } else if(node->parent->l==node) { node->parent->l=node->r; node->r->parent=node->parent; } else { sx_report(SX_ERROR,"Unlinking node which is not descendant " "of its parent\n"); }; } else if(tree->head==node) { /* only one case, really */ tree->head=node->r; node->r->parent=NULL; } else { sx_report(SX_ERROR,"Unlinking node with no parent and not root\n"); }; return; } else if(node->l) { if(node->parent) { if(node->parent->r==node) { node->parent->r=node->l; node->l->parent=node->parent; } else if(node->parent->l==node) { node->parent->l=node->l; node->l->parent=node->parent; } else { sx_report(SX_ERROR,"Unlinking node which is not descendant " "of its parent\n"); }; } else if(tree->head==node) { tree->head=node->l; node->l->parent=NULL; } else { sx_report(SX_ERROR,"Unlinking node with no parent and not root\n"); }; return; } else { /* the only case - node does not have descendants */ if(node->parent) { if(node->parent->l==node) node->parent->l=NULL; else if(node->parent->r==node) node->parent->r=NULL; else { sx_report(SX_ERROR,"Unlinking node which is not descendant " "of its parent\n"); }; if(node->parent->isGlue) { node=node->parent; goto next; }; } else if(tree->head==node) { tree->head=NULL; } else { sx_report(SX_ERROR,"Unlinking node with no parent and not root\n"); }; return; }; }; struct sx_radix_node* sx_radix_tree_lookup(struct sx_radix_tree* tree, struct sx_prefix* prefix) { int eb; struct sx_radix_node* candidate=NULL, *chead; if(!tree || !prefix) return NULL; if(tree->family!=prefix->family) return NULL; if(!tree->head) return NULL; chead=tree->head; next: eb=sx_prefix_eqbits(&chead->prefix,prefix); if(eb==chead->prefix.masklen && eb==prefix->masklen) { /* they are equal */ if(chead->isGlue) return candidate; return chead; } else if(ebprefix.masklen) { return candidate; } else if(ebmasklen) { /* it equals chead->masklen */ if(sx_prefix_isbitset(prefix,eb+1)) { if(chead->r) { if(!chead->isGlue) { candidate=chead; }; chead=chead->r; goto next; } else { if(chead->isGlue) return candidate; return chead; }; } else { if(chead->l) { if(!chead->isGlue) { candidate=chead; }; chead=chead->l; goto next; } else { if(chead->isGlue) return candidate; return chead; }; }; } else { char pbuffer[128], cbuffer[128]; sx_prefix_snprintf(prefix,pbuffer,sizeof(pbuffer)); sx_prefix_snprintf(&chead->prefix,cbuffer,sizeof(cbuffer)); printf("Unreachible point... eb=%i, prefix=%s, chead=%s\n", eb, pbuffer, cbuffer); abort(); }; }; struct sx_radix_node* sx_radix_tree_insert(struct sx_radix_tree* tree, struct sx_prefix* prefix) { int eb; struct sx_radix_node** candidate=NULL, *chead; if(!tree || !prefix) return NULL; if(tree->family!=prefix->family) { return NULL; }; if(!tree->head) { tree->head=sx_radix_node_new(prefix); return tree->head; }; candidate=&tree->head; chead=tree->head; next: eb=sx_prefix_eqbits(prefix,&chead->prefix); if(ebmasklen && ebprefix.masklen) { struct sx_prefix neoRoot=*prefix; struct sx_radix_node* rn, *ret=sx_radix_node_new(prefix); neoRoot.masklen=eb; sx_prefix_adjust_masklen(&neoRoot); rn=sx_radix_node_new(&neoRoot); if(!rn) { sx_report(SX_ERROR,"Unable to create node: %s\n", strerror(errno)); return NULL; }; if(sx_prefix_isbitset(prefix,eb+1)) { rn->l=chead; rn->r=ret; } else { rn->l=ret; rn->r=chead; }; rn->parent=chead->parent; chead->parent=rn; ret->parent=rn; rn->isGlue=1; *candidate=rn; return ret; } else if(eb==prefix->masklen && ebprefix.masklen) { struct sx_radix_node* ret=sx_radix_node_new(prefix); if(sx_prefix_isbitset(&chead->prefix,eb+1)) { ret->r=chead; } else { ret->l=chead; }; ret->parent=chead->parent; chead->parent=ret; *candidate=ret; return ret; } else if(eb==chead->prefix.masklen && ebmasklen) { if(sx_prefix_isbitset(prefix,eb+1)) { if(chead->r) { candidate=&chead->r; chead=chead->r; goto next; } else { chead->r=sx_radix_node_new(prefix); chead->r->parent=chead; return chead->r; }; } else { if(chead->l) { candidate=&chead->l; chead=chead->l; goto next; } else { chead->l=sx_radix_node_new(prefix); chead->l->parent=chead; return chead->l; }; }; } else if(eb==chead->prefix.masklen && eb==prefix->masklen) { /* equal routes... */ if(chead->isGlue) { chead->isGlue=0; }; return chead; } else { char pbuffer[128], cbuffer[128]; sx_prefix_snprintf(prefix,pbuffer,sizeof(pbuffer)); sx_prefix_snprintf(&chead->prefix,cbuffer,sizeof(cbuffer)); printf("Unreachible point... eb=%i, prefix=%s, chead=%s\n", eb, pbuffer, cbuffer); abort(); }; }; void sx_radix_node_fprintf(struct sx_radix_node* node, void* udata) { FILE* out=(udata?udata:stdout); char buffer[128]; if(!node) { fprintf(out,"(null)\n"); } else { sx_prefix_snprintf(&node->prefix,buffer,sizeof(buffer)); fprintf(out,"%s %s\n", buffer, node->isGlue?"(glue)":""); }; }; int sx_radix_node_foreach(struct sx_radix_node* node, void (*func)(struct sx_radix_node*, void*), void* udata) { func(node,udata); if(node->l) sx_radix_node_foreach(node->l,func,udata); if(node->r) sx_radix_node_foreach(node->r,func,udata); return 0; }; int sx_radix_tree_foreach(struct sx_radix_tree* tree, void (*func)(struct sx_radix_node*, void*), void* udata) { if(!func || !tree || !tree->head) return 0; sx_radix_node_foreach(tree->head,func,udata); return 0; }; int sx_radix_node_aggregate(struct sx_radix_node* node) { if(node->l) sx_radix_node_aggregate(node->l); if(node->r) sx_radix_node_aggregate(node->r); if(debug_aggregation) { printf("Aggregating on node: "); sx_prefix_fprint(stdout,&node->prefix); printf(" %s%s%u,%u\n", node->isGlue?"Glue ":"", node->isAggregate?"Aggregate ":"",node->aggregateLow, node->aggregateHi); if(node->r) { printf("R-Tree: "); sx_prefix_fprint(stdout,&node->r->prefix); printf(" %s%s%u,%u\n", (node->r->isGlue)?"Glue ":"", (node->r->isAggregate)?"Aggregate ":"", node->r->aggregateLow,node->r->aggregateHi); if(node->r->son) { printf("R-Son: "); sx_prefix_fprint(stdout,&node->r->son->prefix); printf(" %s%s%u,%u\n",node->r->son->isGlue?"Glue ":"", node->r->son->isAggregate?"Aggregate ":"", node->r->son->aggregateLow,node->r->son->aggregateHi); }; }; if(node->l) { printf("L-Tree: "); sx_prefix_fprint(stdout,&node->l->prefix); printf(" %s%s%u,%u\n",node->l->isGlue?"Glue ":"", node->l->isAggregate?"Aggregate ":"", node->l->aggregateLow,node->l->aggregateHi); if(node->l->son) { printf("L-Son: "); sx_prefix_fprint(stdout,&node->l->son->prefix); printf(" %s%s%u,%u\n",node->l->son->isGlue?"Glue ":"", node->l->son->isAggregate?"Aggregate ":"", node->l->son->aggregateLow,node->l->son->aggregateHi); }; }; }; if(node->r && node->l) { if(!node->r->isAggregate && !node->l->isAggregate && !node->r->isGlue && !node->l->isGlue && node->r->prefix.masklen==node->l->prefix.masklen) { if(node->r->prefix.masklen==node->prefix.masklen+1) { node->isAggregate=1; node->r->isGlue=1; node->l->isGlue=1; node->aggregateHi=node->r->prefix.masklen; if(node->isGlue) { node->isGlue=0; node->aggregateLow=node->r->prefix.masklen; } else { node->aggregateLow=node->prefix.masklen; }; }; if(node->r->son && node->l->son && node->r->son->isAggregate && node->l->son->isAggregate && node->r->son->aggregateHi==node->l->son->aggregateHi && node->r->son->aggregateLow==node->l->son->aggregateLow && node->r->prefix.masklen==node->prefix.masklen+1 && node->l->prefix.masklen==node->prefix.masklen+1) { node->son=sx_radix_node_new(&node->prefix); node->son->isGlue=0; node->son->isAggregate=1; node->son->aggregateHi=node->r->son->aggregateHi; node->son->aggregateLow=node->r->son->aggregateLow; node->r->son->isGlue=1; node->l->son->isGlue=1; }; } else if(node->r->isAggregate && node->l->isAggregate && node->r->aggregateHi==node->l->aggregateHi && node->r->aggregateLow==node->l->aggregateLow) { if(node->r->prefix.masklen==node->prefix.masklen+1 && node->l->prefix.masklen==node->prefix.masklen+1) { if(node->isGlue) { node->r->isGlue=1; node->l->isGlue=1; node->isAggregate=1; node->isGlue=0; node->aggregateHi=node->r->aggregateHi; node->aggregateLow=node->r->aggregateLow; } else if(node->r->prefix.masklen==node->r->aggregateLow) { node->r->isGlue=1; node->l->isGlue=1; node->isAggregate=1; node->aggregateHi=node->r->aggregateHi; node->aggregateLow=node->prefix.masklen; } else { node->son=sx_radix_node_new(&node->prefix); node->son->isGlue=0; node->son->isAggregate=1; node->son->aggregateHi=node->r->aggregateHi; node->son->aggregateLow=node->r->aggregateLow; node->r->isGlue=1; node->l->isGlue=1; if(node->r->son && node->l->son && node->r->son->aggregateHi==node->l->son->aggregateHi && node->r->son->aggregateLow==node->l->son->aggregateLow) { node->son->son=sx_radix_node_new(&node->prefix); node->son->son->isGlue=0; node->son->son->isAggregate=1; node->son->son->aggregateHi=node->r->son->aggregateHi; node->son->son->aggregateLow=node->r->son->aggregateLow; node->r->son->isGlue=1; node->l->son->isGlue=1; }; }; }; } else if(node->l->son && node->r->isAggregate && node->l->son->isAggregate && node->r->aggregateHi==node->l->son->aggregateHi && node->r->aggregateLow==node->l->son->aggregateLow) { if(node->r->prefix.masklen==node->prefix.masklen+1 && node->l->prefix.masklen==node->prefix.masklen+1) { if(node->isGlue) { node->r->isGlue=1; node->l->son->isGlue=1; node->isAggregate=1; node->isGlue=0; node->aggregateHi=node->r->aggregateHi; node->aggregateLow=node->r->aggregateLow; } else { node->son=sx_radix_node_new(&node->prefix); node->son->isGlue=0; node->son->isAggregate=1; node->son->aggregateHi=node->r->aggregateHi; node->son->aggregateLow=node->r->aggregateLow; node->r->isGlue=1; node->l->son->isGlue=1; }; }; } else if(node->r->son && node->l->isAggregate && node->r->son->isAggregate && node->l->aggregateHi==node->r->son->aggregateHi && node->l->aggregateLow==node->r->son->aggregateLow) { if(node->l->prefix.masklen==node->prefix.masklen+1 && node->r->prefix.masklen==node->prefix.masklen+1) { if(node->isGlue) { node->l->isGlue=1; node->r->son->isGlue=1; node->isAggregate=1; node->isGlue=0; node->aggregateHi=node->l->aggregateHi; node->aggregateLow=node->l->aggregateLow; } else { node->son=sx_radix_node_new(&node->prefix); node->son->isGlue=0; node->son->isAggregate=1; node->son->aggregateHi=node->l->aggregateHi; node->son->aggregateLow=node->l->aggregateLow; node->l->isGlue=1; node->r->son->isGlue=1; }; }; }; }; return 0; }; int sx_radix_tree_aggregate(struct sx_radix_tree* tree) { if(tree && tree->head) return sx_radix_node_aggregate(tree->head); return 0; }; static void setGlueUpTo(struct sx_radix_node* node, void* udata) { unsigned refine=*(unsigned*)udata; if(node && node->prefix.masklen <= refine) { node->isGlue=1; }; }; static void sx_radix_node_hyperaggregate(struct sx_radix_node* node, unsigned max) { if(!node->isGlue) { node->isAggregate=0; if(node->l) sx_radix_node_foreach(node->l, setGlueUpTo, &max); if(node->r) sx_radix_node_foreach(node->r, setGlueUpTo, &max); } else { if(node->l) sx_radix_node_hyperaggregate(node->l, max); if(node->r) sx_radix_node_hyperaggregate(node->r, max); }; }; int sx_radix_tree_hyperaggregate(struct sx_radix_tree* tree) { if(tree && tree->head) { unsigned max = tree->family == AF_INET ? 32 : 128; sx_radix_node_hyperaggregate(tree->head, max); }; return 0; }; int sx_radix_node_refine(struct sx_radix_node* node, unsigned refine) { if(!node->isGlue && node->prefix.masklenisAggregate=1; node->aggregateLow=node->prefix.masklen; node->aggregateHi=refine; if(node->l) { sx_radix_node_foreach(node->l, setGlueUpTo, &refine); sx_radix_node_refine(node->l, refine); }; if(node->r) { sx_radix_node_foreach(node->r, setGlueUpTo, &refine); sx_radix_node_refine(node->r, refine); }; } else if(!node->isGlue && node->prefix.masklen==refine) { /* not setting aggregate in this case */ if(node->l) sx_radix_node_refine(node->l, refine); if(node->r) sx_radix_node_refine(node->r, refine); } else if(node->isGlue) { if(node->r) sx_radix_node_refine(node->r, refine); if(node->l) sx_radix_node_refine(node->l, refine); } else { /* node->prefix.masklen > refine */ /* do nothing, should pass specifics 'as is'. Also, do not process any embedded routes, their masklen is bigger, too... node->isGlue=1; if(node->l) sx_radix_node_foreach(node->l, setGlue, NULL); if(node->r) sx_radix_node_foreach(node->r, setGlue, NULL); */ }; return 0; }; int sx_radix_tree_refine(struct sx_radix_tree* tree, unsigned refine) { if(tree && tree->head) return sx_radix_node_refine(tree->head, refine); return 0; }; static void setGlueFrom(struct sx_radix_node* node, void* udata) { unsigned refine=*(unsigned*)udata; if(node && node->prefix.masklen <= refine) { node->isGlue=1; }; }; static int sx_radix_node_refineLow(struct sx_radix_node* node, unsigned refineLow) { if(!node->isGlue && node->prefix.masklen<=refineLow) { if(!node->isAggregate) { node->isAggregate=1; node->aggregateLow=refineLow; if(node->prefix.family == AF_INET) { node->aggregateHi=32; } else { node->aggregateHi=128; } } else { node->aggregateLow=refineLow; }; if(node->l) { sx_radix_node_foreach(node->l, setGlueFrom, &refineLow); sx_radix_node_refineLow(node->l, refineLow); }; if(node->r) { sx_radix_node_foreach(node->r, setGlueFrom, &refineLow); sx_radix_node_refineLow(node->r, refineLow); }; } else if(!node->isGlue && node->prefix.masklen==refineLow) { /* not setting aggregate in this case */ if(node->l) sx_radix_node_refineLow(node->l, refineLow); if(node->r) sx_radix_node_refineLow(node->r, refineLow); } else if(node->isGlue) { if(node->r) sx_radix_node_refineLow(node->r, refineLow); if(node->l) sx_radix_node_refineLow(node->l, refineLow); } else { /* node->prefix.masklen > refine */ /* do nothing, should pass specifics 'as is'. Also, do not process any embedded routes, their masklen is bigger, too... node->isGlue=1; if(node->l) sx_radix_node_foreach(node->l, setGlue, NULL); if(node->r) sx_radix_node_foreach(node->r, setGlue, NULL); */ }; return 0; }; int sx_radix_tree_refineLow(struct sx_radix_tree* tree, unsigned refineLow) { if(tree && tree->head) return sx_radix_node_refineLow(tree->head, refineLow); return 0; }; #if SX_PTREE_TEST int main() { struct sx_prefix* p; int n; struct sx_radix_tree* tree; struct sx_radix_node* node; p=sx_prefix_new(0,"10.11.12.13/24"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(0,"10.11.12.13/33"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(0,"10.11.12.13/-133"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(AF_INET,"10.11.12.14/24"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(AF_INET,"10.11.12.14/33"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(AF_INET,"10.11.12.14/-133"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(AF_INET6,"10.11.12.15/24"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(AF_INET6,"10.11.12.15/33"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(AF_INET6,"10.11.12.15/-133"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(0,"2001:1b00::/24"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(0,"2001:1b00::/33"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(0,"2001:1b00::/-133"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(AF_INET6,"2001:1b01::/24"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(AF_INET6,"2001:1b01::/33"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(AF_INET6,"2001:1b01::/-133"); sx_prefix_fprint(stdout,p); printf("\n"); #define SX_TEST_EBITS(a,b,susp) n=sx_prefix_eqbits(sx_prefix_new(0,a)),\ sx_prefix_new(0,b))); \ if(n!=susp) printf("FAILED: %s eqbits %s=%i, not %i\n", a, b, n, susp);\ else printf("OK, %s eqbits %s=%i, as suspected\n", a, b, n); SX_TEST_EBITS("192.168.0.0/24","192.168.1.0/24",23); SX_TEST_EBITS("192.168.0.0/32","192.168.0.1/32",31); #if SX_LIBPTREE_IPV6 SX_TEST_EBITS("2001:1b00::/32","2001:1b01::/32",31); #endif p=sx_prefix_new(0,"10.11.12.255/32"); sx_prefix_fprint(stdout,p); printf("\n31'th bit is %i\n",sx_prefix_isbitset(p,31)); printf("32'th bit is %i\n",sx_prefix_isbitset(p,32)); printf("33'th bit is %i\n",sx_prefix_isbitset(p,33)); p=sx_prefix_new(0,"10.11.12.255/31"); sx_prefix_fprint(stdout,p); printf("\n31'th bit is %i\n",sx_prefix_isbitset(p,31)); printf("32'th bit is %i\n",sx_prefix_isbitset(p,32)); printf("33'th bit is %i\n",sx_prefix_isbitset(p,33)); p=sx_prefix_new(0,"10.11.12.255/30"); sx_prefix_fprint(stdout,p); printf("\n31'th bit is %i\n",sx_prefix_isbitset(p,31)); p=sx_prefix_new(0,"10.11.12.255/29"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(0,"10.11.12.255/28"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(0,"10.11.12.255/27"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(0,"10.11.12.255/26"); sx_prefix_fprint(stdout,p); printf("\n"); p=sx_prefix_new(0,"10.11.12.255/25"); sx_prefix_fprint(stdout,p); printf("\n25'th bit is %i\n",sx_prefix_isbitset(p,25)); p=sx_prefix_new(0,"10.11.12.255/24"); sx_prefix_fprint(stdout,p); printf("\n25'th bit is %i\n",sx_prefix_isbitset(p,25)); tree=sx_radix_tree_new(AF_INET); sx_radix_tree_insert(tree,sx_prefix_new(0,"81.9.100.10/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"217.170.80.83/32")); sx_radix_tree_foreach(tree,sx_radix_node_fprintf,NULL); tree=sx_radix_tree_new(AF_INET); sx_radix_tree_insert(tree,sx_prefix_new(0,"81.9.100.10/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"217.170.80.83/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"217.170.80.84/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"217.170.80.85/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"217.170.80.86/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"217.170.80.87/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"217.170.80.90/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"217.170.80.90/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"127.0.0.1/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"127.0.0.1/24")); sx_radix_tree_insert(tree,sx_prefix_new(0,"127.0.0.0/24")); sx_radix_tree_insert(tree,sx_prefix_new(0,"128.0.0.0/1")); sx_radix_tree_foreach(tree,sx_radix_node_fprintf,NULL); printf("lookup 1.1.1.1: "); node=sx_radix_tree_lookup(tree,sx_prefix_new(0,"1.1.1.1")); sx_radix_node_fprintf(node,NULL); printf("lookup 217.170.80.90: "); node=sx_radix_tree_lookup(tree,sx_prefix_new(0,"217.170.80.90")); sx_radix_node_fprintf(node,NULL); sx_radix_tree_unlink(tree,node); printf("lookup 217.170.80.90 after delete: "); node=sx_radix_tree_lookup(tree,sx_prefix_new(0,"217.170.80.90")); sx_radix_node_fprintf(node,NULL); sx_radix_tree_insert(tree,sx_prefix_new(0,"217.170.80.90/32")); printf("lookup 217.170.80.90 after reinsert: "); node=sx_radix_tree_lookup(tree,sx_prefix_new(0,"217.170.80.90")); sx_radix_node_fprintf(node,NULL); printf("lookup 217.170.80.81: "); node=sx_radix_tree_lookup(tree,sx_prefix_new(0,"217.170.80.81")); sx_radix_node_fprintf(node,NULL); printf("lookup 127.0.0.1/24: "); node=sx_radix_tree_lookup(tree,sx_prefix_new(0,"127.0.0.1/24")); sx_radix_node_fprintf(node,NULL); printf("lookup 127.0.0.1/26: "); node=sx_radix_tree_lookup(tree,sx_prefix_new(0,"127.0.0.1/26")); sx_radix_node_fprintf(node,NULL); printf("lookup 127.0.0.1/23: "); node=sx_radix_tree_lookup(tree,sx_prefix_new(0,"127.0.0.1/23")); sx_radix_node_fprintf(node,NULL); tree=sx_radix_tree_new(AF_INET6); sx_radix_tree_insert(tree,sx_prefix_new(0,"2100:1b00::/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"2100:1b01::/32")); sx_radix_tree_insert(tree,sx_prefix_new(0,"2100:1b00::/33")); sx_radix_tree_insert(tree,sx_prefix_new(0,"2100:1b00::1/128")); sx_radix_tree_foreach(tree,sx_radix_node_fprintf,NULL); return 0; }; #endif bgpq3-0.1.36.1/sx_prefix.h000066400000000000000000000053301416330673000151400ustar00rootroot00000000000000#ifndef _SX_PREFIX_H_ #define _SX_PREFIX_H_ #include #include #include #include typedef struct sx_prefix { int family; int masklen; union { struct in_addr addr; struct in6_addr addr6; unsigned char addrs[sizeof(struct in6_addr)]; } addr; } sx_prefix_t; typedef struct sx_radix_node { struct sx_radix_node* parent, *l, *r, *son; void* payload; unsigned int isGlue:1; unsigned int isAggregated:1; unsigned int isAggregate:1; unsigned int aggregateLow; unsigned int aggregateHi; struct sx_prefix prefix; } sx_radix_node_t; typedef struct sx_radix_tree { int family; struct sx_radix_node* head; } sx_radix_tree_t; /* most common operations with the tree is to: lookup/insert/unlink */ struct sx_radix_node* sx_radix_tree_lookup(struct sx_radix_tree* tree, struct sx_prefix* prefix); struct sx_radix_node* sx_radix_tree_insert(struct sx_radix_tree* tree, struct sx_prefix* prefix); void sx_radix_tree_unlink(struct sx_radix_tree* t, struct sx_radix_node* n); struct sx_radix_node* sx_radix_tree_lookup_exact(struct sx_radix_tree* tree, struct sx_prefix* prefix); struct sx_prefix* sx_prefix_alloc(struct sx_prefix* p); void sx_prefix_destroy(struct sx_prefix* p); void sx_prefix_adjust_masklen(struct sx_prefix* p); struct sx_prefix* sx_prefix_new(int af, char* text); int sx_prefix_parse(struct sx_prefix* p, int af, char* text); int sx_prefix_range_parse(struct sx_radix_tree* t, int af, int ml, char* text); int sx_prefix_fprint(FILE* f, struct sx_prefix* p); int sx_prefix_snprintf(struct sx_prefix* p, char* rbuffer, int srb); int sx_prefix_snprintf_sep(struct sx_prefix* p, char* rbuffer, int srb, char*); int sx_prefix_snprintf_fmt(struct sx_prefix* p, char* rbuffer, int srb, const char* name, const char* fmt); int sx_prefix_jsnprintf(struct sx_prefix* p, char* rbuffer, int srb); struct sx_radix_tree* sx_radix_tree_new(int af); struct sx_radix_node* sx_radix_node_new(struct sx_prefix* prefix); struct sx_prefix* sx_prefix_overlay(struct sx_prefix* p, int n); int sx_radix_tree_empty(struct sx_radix_tree* t); void sx_radix_node_fprintf(struct sx_radix_node* node, void* udata); int sx_radix_node_foreach(struct sx_radix_node* node, void (*func)(struct sx_radix_node*, void*), void* udata); int sx_radix_tree_foreach(struct sx_radix_tree* tree, void (*func)(struct sx_radix_node*, void*), void* udata); int sx_radix_tree_aggregate(struct sx_radix_tree* tree); int sx_radix_tree_refine(struct sx_radix_tree* tree, unsigned refine); int sx_radix_tree_refineLow(struct sx_radix_tree* tree, unsigned refineLow); int sx_radix_tree_hyperaggregate(struct sx_radix_tree* tree); #ifndef HAVE_STRLCPY size_t strlcpy(char* dst, const char* src, size_t size); #endif #endif bgpq3-0.1.36.1/sx_report.c000066400000000000000000000033441416330673000151540ustar00rootroot00000000000000#if HAVE_CONFIG_H #include #endif #include #include #include #include #include #include #include #include #include "sx_report.h" static int reportStderr=1; static char const* sx_report_name(sx_report_t t) { switch(t) { case SX_MISFEATURE: return "MISSING FEATURE:"; case SX_FATAL: return "FATAL ERROR:"; case SX_ERROR: return "ERROR:"; case SX_NOTICE: return "Notice:"; case SX_DEBUG: return "Debug:"; }; return "...... HMMMMM.... ERROR... \n"; }; int sx_report(sx_report_t t, char* fmt, ...) { char buffer[65536]; va_list ap; va_start(ap,fmt); vsnprintf(buffer,sizeof(buffer),fmt,ap); va_end(ap); if(reportStderr) { fputs(sx_report_name(t),stderr); fputs(buffer,stderr); } else { switch(t) { case SX_FATAL: syslog(LOG_ERR,"FATAL ERROR: %s", buffer); break; case SX_MISFEATURE: case SX_ERROR: syslog(LOG_ERR,"ERROR: %s", buffer); break; case SX_NOTICE: syslog(LOG_WARNING,"Notice: %s", buffer); break; case SX_DEBUG: syslog(LOG_DEBUG,"Debug: %s", buffer); break; }; }; if(t==SX_FATAL) exit(-1); return 0; }; int sx_debug(char const* const file, char const* const func, int const line, char* fmt, ...) { char buffer[65536]; char bline[65536]; va_list ap; va_start(ap,fmt); vsnprintf(buffer,sizeof(buffer),fmt,ap); va_end(ap); snprintf(bline,sizeof(bline),"DEBUG: %s:%i %s ", file, line, func); if(reportStderr) { fputs(bline,stderr); fputs(buffer,stderr); } else { syslog(LOG_DEBUG,"%s %s", bline, buffer); }; return 0; }; void sx_openlog(char* progname) { openlog(progname?progname:"",LOG_PID,LOG_DAEMON); reportStderr=0; }; bgpq3-0.1.36.1/sx_report.h000066400000000000000000000010161416330673000151530ustar00rootroot00000000000000#ifndef SX_REPORT_H_ #define SX_REPORT_H_ typedef enum { SX_DEBUG = 0, SX_NOTICE, SX_ERROR, SX_MISFEATURE, SX_FATAL } sx_report_t; /* opens syslog and disables logging to stderr */ void sx_openlog(char* progname); int sx_report(sx_report_t, char* fmt, ...) __attribute__ ((format (printf, 2, 3))); int sx_debug(char const* const, char const* const, int const, char* fmt, ...) __attribute__ ((format (printf, 4, 5))); #define SX_DEBUG(a,b,c...) if(a) sx_debug(__FILE__,__FUNCTION__,__LINE__,\ b, ## c); #endif bgpq3-0.1.36.1/sx_slentry.c000066400000000000000000000007621416330673000153420ustar00rootroot00000000000000 #include #include #include #include "sx_slentry.h" struct sx_slentry* sx_slentry_new(char* t) { struct sx_slentry* e=malloc(sizeof(struct sx_slentry)); if(!e) return NULL; memset(e,0,sizeof(struct sx_slentry)); if(t) e->text=strdup(t); return e; }; struct sx_tentry* sx_tentry_new(char* t) { struct sx_tentry* te = malloc(sizeof(struct sx_tentry)); if (!te) return NULL; memset(te, 0, sizeof(struct sx_tentry)); te->text = strdup(t); return te; }; bgpq3-0.1.36.1/sx_slentry.h000066400000000000000000000007231416330673000153440ustar00rootroot00000000000000#ifndef SX_SLENTRY_H_ #define SX_SLENTRY_H_ #if HAVE_SYS_QUEUE_H && HAVE_STAILQ_IN_SYS_QUEUE #include #else #include "sys_queue.h" #endif #if HAVE_SYS_TREE_H #include #else #include "sys_tree.h" #endif struct sx_slentry { STAILQ_ENTRY(sx_slentry) next; char* text; }; struct sx_slentry* sx_slentry_new(char* text); struct sx_tentry { RB_ENTRY(sx_tentry) entry; char* text; }; struct sx_tentry* sx_tentry_new(char* text); #endif bgpq3-0.1.36.1/sys_queue.h000066400000000000000000000565021416330673000151620ustar00rootroot00000000000000/*- * Copyright (c) 1991, 1993 * 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. * 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. * * @(#)queue.h 8.5 (Berkeley) 8/20/94 * $FreeBSD: stable/10/sys/sys/queue.h 251887 2013-06-18 02:57:56Z lstewart $ */ #ifndef _SYS_QUEUE_H_ #define _SYS_QUEUE_H_ #if HAVE_SYS_CDEFS_H #include #endif /* * This file defines four types of data structures: singly-linked lists, * singly-linked tail queues, lists and tail queues. * * A singly-linked list is headed by a single forward pointer. The elements * are singly linked for minimum space and pointer manipulation overhead at * the expense of O(n) removal for arbitrary elements. New elements can be * added to the list after an existing element or at the head of the list. * Elements being removed from the head of the list should use the explicit * macro for this purpose for optimum efficiency. A singly-linked list may * only be traversed in the forward direction. Singly-linked lists are ideal * for applications with large datasets and few or no removals or for * implementing a LIFO queue. * * A singly-linked tail queue is headed by a pair of pointers, one to the * head of the list and the other to the tail of the list. The elements are * singly linked for minimum space and pointer manipulation overhead at the * expense of O(n) removal for arbitrary elements. New elements can be added * to the list after an existing element, at the head of the list, or at the * end of the list. Elements being removed from the head of the tail queue * should use the explicit macro for this purpose for optimum efficiency. * A singly-linked tail queue may only be traversed in the forward direction. * Singly-linked tail queues are ideal for applications with large datasets * and few or no removals or for implementing a FIFO queue. * * A list is headed by a single forward pointer (or an array of forward * pointers for a hash table header). The elements are doubly linked * so that an arbitrary element can be removed without a need to * traverse the list. New elements can be added to the list before * or after an existing element or at the head of the list. A list * may be traversed in either direction. * * A tail queue is headed by a pair of pointers, one to the head of the * list and the other to the tail of the list. The elements are doubly * linked so that an arbitrary element can be removed without a need to * traverse the list. New elements can be added to the list before or * after an existing element, at the head of the list, or at the end of * the list. A tail queue may be traversed in either direction. * * For details on the use of these macros, see the queue(3) manual page. * * * SLIST LIST STAILQ TAILQ * _HEAD + + + + * _HEAD_INITIALIZER + + + + * _ENTRY + + + + * _INIT + + + + * _EMPTY + + + + * _FIRST + + + + * _NEXT + + + + * _PREV - + - + * _LAST - - + + * _FOREACH + + + + * _FOREACH_FROM + + + + * _FOREACH_SAFE + + + + * _FOREACH_FROM_SAFE + + + + * _FOREACH_REVERSE - - - + * _FOREACH_REVERSE_FROM - - - + * _FOREACH_REVERSE_SAFE - - - + * _FOREACH_REVERSE_FROM_SAFE - - - + * _INSERT_HEAD + + + + * _INSERT_BEFORE - + - + * _INSERT_AFTER + + + + * _INSERT_TAIL - - + + * _CONCAT - - + + * _REMOVE_AFTER + - + - * _REMOVE_HEAD + - + - * _REMOVE + + + + * _SWAP + + + + * */ #ifdef QUEUE_MACRO_DEBUG /* Store the last 2 places the queue element or head was altered */ struct qm_trace { unsigned long lastline; unsigned long prevline; const char *lastfile; const char *prevfile; }; #define TRACEBUF struct qm_trace trace; #define TRACEBUF_INITIALIZER { __FILE__, __LINE__, NULL, 0 } , #define TRASHIT(x) do {(x) = (void *)-1;} while (0) #define QMD_SAVELINK(name, link) void **name = (void *)&(link) #define QMD_TRACE_HEAD(head) do { \ (head)->trace.prevline = (head)->trace.lastline; \ (head)->trace.prevfile = (head)->trace.lastfile; \ (head)->trace.lastline = __LINE__; \ (head)->trace.lastfile = __FILE__; \ } while (0) #define QMD_TRACE_ELEM(elem) do { \ (elem)->trace.prevline = (elem)->trace.lastline; \ (elem)->trace.prevfile = (elem)->trace.lastfile; \ (elem)->trace.lastline = __LINE__; \ (elem)->trace.lastfile = __FILE__; \ } while (0) #else #define QMD_TRACE_ELEM(elem) #define QMD_TRACE_HEAD(head) #define QMD_SAVELINK(name, link) #define TRACEBUF #define TRACEBUF_INITIALIZER #define TRASHIT(x) #endif /* QUEUE_MACRO_DEBUG */ /* * Singly-linked List declarations. */ #define SLIST_HEAD(name, type) \ struct name { \ struct type *slh_first; /* first element */ \ } #define SLIST_HEAD_INITIALIZER(head) \ { NULL } #define SLIST_ENTRY(type) \ struct { \ struct type *sle_next; /* next element */ \ } /* * Singly-linked List functions. */ #define SLIST_EMPTY(head) ((head)->slh_first == NULL) #define SLIST_FIRST(head) ((head)->slh_first) #define SLIST_FOREACH(var, head, field) \ for ((var) = SLIST_FIRST((head)); \ (var); \ (var) = SLIST_NEXT((var), field)) #define SLIST_FOREACH_FROM(var, head, field) \ for ((var) = ((var) ? (var) : SLIST_FIRST((head))); \ (var); \ (var) = SLIST_NEXT((var), field)) #define SLIST_FOREACH_SAFE(var, head, field, tvar) \ for ((var) = SLIST_FIRST((head)); \ (var) && ((tvar) = SLIST_NEXT((var), field), 1); \ (var) = (tvar)) #define SLIST_FOREACH_FROM_SAFE(var, head, field, tvar) \ for ((var) = ((var) ? (var) : SLIST_FIRST((head))); \ (var) && ((tvar) = SLIST_NEXT((var), field), 1); \ (var) = (tvar)) #define SLIST_FOREACH_PREVPTR(var, varp, head, field) \ for ((varp) = &SLIST_FIRST((head)); \ ((var) = *(varp)) != NULL; \ (varp) = &SLIST_NEXT((var), field)) #define SLIST_INIT(head) do { \ SLIST_FIRST((head)) = NULL; \ } while (0) #define SLIST_INSERT_AFTER(slistelm, elm, field) do { \ SLIST_NEXT((elm), field) = SLIST_NEXT((slistelm), field); \ SLIST_NEXT((slistelm), field) = (elm); \ } while (0) #define SLIST_INSERT_HEAD(head, elm, field) do { \ SLIST_NEXT((elm), field) = SLIST_FIRST((head)); \ SLIST_FIRST((head)) = (elm); \ } while (0) #define SLIST_NEXT(elm, field) ((elm)->field.sle_next) #define SLIST_REMOVE(head, elm, type, field) do { \ QMD_SAVELINK(oldnext, (elm)->field.sle_next); \ if (SLIST_FIRST((head)) == (elm)) { \ SLIST_REMOVE_HEAD((head), field); \ } \ else { \ struct type *curelm = SLIST_FIRST((head)); \ while (SLIST_NEXT(curelm, field) != (elm)) \ curelm = SLIST_NEXT(curelm, field); \ SLIST_REMOVE_AFTER(curelm, field); \ } \ TRASHIT(*oldnext); \ } while (0) #define SLIST_REMOVE_AFTER(elm, field) do { \ SLIST_NEXT(elm, field) = \ SLIST_NEXT(SLIST_NEXT(elm, field), field); \ } while (0) #define SLIST_REMOVE_HEAD(head, field) do { \ SLIST_FIRST((head)) = SLIST_NEXT(SLIST_FIRST((head)), field); \ } while (0) #define SLIST_SWAP(head1, head2, type) do { \ struct type *swap_first = SLIST_FIRST(head1); \ SLIST_FIRST(head1) = SLIST_FIRST(head2); \ SLIST_FIRST(head2) = swap_first; \ } while (0) /* * Singly-linked Tail queue declarations. */ #define STAILQ_HEAD(name, type) \ struct name { \ struct type *stqh_first;/* first element */ \ struct type **stqh_last;/* addr of last next element */ \ } #define STAILQ_HEAD_INITIALIZER(head) \ { NULL, &(head).stqh_first } #define STAILQ_ENTRY(type) \ struct { \ struct type *stqe_next; /* next element */ \ } /* * Singly-linked Tail queue functions. */ #define STAILQ_CONCAT(head1, head2) do { \ if (!STAILQ_EMPTY((head2))) { \ *(head1)->stqh_last = (head2)->stqh_first; \ (head1)->stqh_last = (head2)->stqh_last; \ STAILQ_INIT((head2)); \ } \ } while (0) #define STAILQ_EMPTY(head) ((head)->stqh_first == NULL) #define STAILQ_FIRST(head) ((head)->stqh_first) #define STAILQ_FOREACH(var, head, field) \ for((var) = STAILQ_FIRST((head)); \ (var); \ (var) = STAILQ_NEXT((var), field)) #define STAILQ_FOREACH_FROM(var, head, field) \ for ((var) = ((var) ? (var) : STAILQ_FIRST((head))); \ (var); \ (var) = STAILQ_NEXT((var), field)) #define STAILQ_FOREACH_SAFE(var, head, field, tvar) \ for ((var) = STAILQ_FIRST((head)); \ (var) && ((tvar) = STAILQ_NEXT((var), field), 1); \ (var) = (tvar)) #define STAILQ_FOREACH_FROM_SAFE(var, head, field, tvar) \ for ((var) = ((var) ? (var) : STAILQ_FIRST((head))); \ (var) && ((tvar) = STAILQ_NEXT((var), field), 1); \ (var) = (tvar)) #define STAILQ_INIT(head) do { \ STAILQ_FIRST((head)) = NULL; \ (head)->stqh_last = &STAILQ_FIRST((head)); \ } while (0) #define STAILQ_INSERT_AFTER(head, tqelm, elm, field) do { \ if ((STAILQ_NEXT((elm), field) = STAILQ_NEXT((tqelm), field)) == NULL)\ (head)->stqh_last = &STAILQ_NEXT((elm), field); \ STAILQ_NEXT((tqelm), field) = (elm); \ } while (0) #define STAILQ_INSERT_HEAD(head, elm, field) do { \ if ((STAILQ_NEXT((elm), field) = STAILQ_FIRST((head))) == NULL) \ (head)->stqh_last = &STAILQ_NEXT((elm), field); \ STAILQ_FIRST((head)) = (elm); \ } while (0) #define STAILQ_INSERT_TAIL(head, elm, field) do { \ STAILQ_NEXT((elm), field) = NULL; \ *(head)->stqh_last = (elm); \ (head)->stqh_last = &STAILQ_NEXT((elm), field); \ } while (0) #define STAILQ_LAST(head, type, field) \ (STAILQ_EMPTY((head)) ? NULL : \ __containerof((head)->stqh_last, struct type, field.stqe_next)) #define STAILQ_NEXT(elm, field) ((elm)->field.stqe_next) #define STAILQ_REMOVE(head, elm, type, field) do { \ QMD_SAVELINK(oldnext, (elm)->field.stqe_next); \ if (STAILQ_FIRST((head)) == (elm)) { \ STAILQ_REMOVE_HEAD((head), field); \ } \ else { \ struct type *curelm = STAILQ_FIRST((head)); \ while (STAILQ_NEXT(curelm, field) != (elm)) \ curelm = STAILQ_NEXT(curelm, field); \ STAILQ_REMOVE_AFTER(head, curelm, field); \ } \ TRASHIT(*oldnext); \ } while (0) #define STAILQ_REMOVE_AFTER(head, elm, field) do { \ if ((STAILQ_NEXT(elm, field) = \ STAILQ_NEXT(STAILQ_NEXT(elm, field), field)) == NULL) \ (head)->stqh_last = &STAILQ_NEXT((elm), field); \ } while (0) #define STAILQ_REMOVE_HEAD(head, field) do { \ if ((STAILQ_FIRST((head)) = \ STAILQ_NEXT(STAILQ_FIRST((head)), field)) == NULL) \ (head)->stqh_last = &STAILQ_FIRST((head)); \ } while (0) #define STAILQ_SWAP(head1, head2, type) do { \ struct type *swap_first = STAILQ_FIRST(head1); \ struct type **swap_last = (head1)->stqh_last; \ STAILQ_FIRST(head1) = STAILQ_FIRST(head2); \ (head1)->stqh_last = (head2)->stqh_last; \ STAILQ_FIRST(head2) = swap_first; \ (head2)->stqh_last = swap_last; \ if (STAILQ_EMPTY(head1)) \ (head1)->stqh_last = &STAILQ_FIRST(head1); \ if (STAILQ_EMPTY(head2)) \ (head2)->stqh_last = &STAILQ_FIRST(head2); \ } while (0) /* * List declarations. */ #define LIST_HEAD(name, type) \ struct name { \ struct type *lh_first; /* first element */ \ } #define LIST_HEAD_INITIALIZER(head) \ { NULL } #define LIST_ENTRY(type) \ struct { \ struct type *le_next; /* next element */ \ struct type **le_prev; /* address of previous next element */ \ } /* * List functions. */ #if (defined(_KERNEL) && defined(INVARIANTS)) #define QMD_LIST_CHECK_HEAD(head, field) do { \ if (LIST_FIRST((head)) != NULL && \ LIST_FIRST((head))->field.le_prev != \ &LIST_FIRST((head))) \ panic("Bad list head %p first->prev != head", (head)); \ } while (0) #define QMD_LIST_CHECK_NEXT(elm, field) do { \ if (LIST_NEXT((elm), field) != NULL && \ LIST_NEXT((elm), field)->field.le_prev != \ &((elm)->field.le_next)) \ panic("Bad link elm %p next->prev != elm", (elm)); \ } while (0) #define QMD_LIST_CHECK_PREV(elm, field) do { \ if (*(elm)->field.le_prev != (elm)) \ panic("Bad link elm %p prev->next != elm", (elm)); \ } while (0) #else #define QMD_LIST_CHECK_HEAD(head, field) #define QMD_LIST_CHECK_NEXT(elm, field) #define QMD_LIST_CHECK_PREV(elm, field) #endif /* (_KERNEL && INVARIANTS) */ #define LIST_EMPTY(head) ((head)->lh_first == NULL) #define LIST_FIRST(head) ((head)->lh_first) #define LIST_FOREACH(var, head, field) \ for ((var) = LIST_FIRST((head)); \ (var); \ (var) = LIST_NEXT((var), field)) #define LIST_FOREACH_FROM(var, head, field) \ for ((var) = ((var) ? (var) : LIST_FIRST((head))); \ (var); \ (var) = LIST_NEXT((var), field)) #define LIST_FOREACH_SAFE(var, head, field, tvar) \ for ((var) = LIST_FIRST((head)); \ (var) && ((tvar) = LIST_NEXT((var), field), 1); \ (var) = (tvar)) #define LIST_FOREACH_FROM_SAFE(var, head, field, tvar) \ for ((var) = ((var) ? (var) : LIST_FIRST((head))); \ (var) && ((tvar) = LIST_NEXT((var), field), 1); \ (var) = (tvar)) #define LIST_INIT(head) do { \ LIST_FIRST((head)) = NULL; \ } while (0) #define LIST_INSERT_AFTER(listelm, elm, field) do { \ QMD_LIST_CHECK_NEXT(listelm, field); \ if ((LIST_NEXT((elm), field) = LIST_NEXT((listelm), field)) != NULL)\ LIST_NEXT((listelm), field)->field.le_prev = \ &LIST_NEXT((elm), field); \ LIST_NEXT((listelm), field) = (elm); \ (elm)->field.le_prev = &LIST_NEXT((listelm), field); \ } while (0) #define LIST_INSERT_BEFORE(listelm, elm, field) do { \ QMD_LIST_CHECK_PREV(listelm, field); \ (elm)->field.le_prev = (listelm)->field.le_prev; \ LIST_NEXT((elm), field) = (listelm); \ *(listelm)->field.le_prev = (elm); \ (listelm)->field.le_prev = &LIST_NEXT((elm), field); \ } while (0) #define LIST_INSERT_HEAD(head, elm, field) do { \ QMD_LIST_CHECK_HEAD((head), field); \ if ((LIST_NEXT((elm), field) = LIST_FIRST((head))) != NULL) \ LIST_FIRST((head))->field.le_prev = &LIST_NEXT((elm), field);\ LIST_FIRST((head)) = (elm); \ (elm)->field.le_prev = &LIST_FIRST((head)); \ } while (0) #define LIST_NEXT(elm, field) ((elm)->field.le_next) #define LIST_PREV(elm, head, type, field) \ ((elm)->field.le_prev == &LIST_FIRST((head)) ? NULL : \ __containerof((elm)->field.le_prev, struct type, field.le_next)) #define LIST_REMOVE(elm, field) do { \ QMD_SAVELINK(oldnext, (elm)->field.le_next); \ QMD_SAVELINK(oldprev, (elm)->field.le_prev); \ QMD_LIST_CHECK_NEXT(elm, field); \ QMD_LIST_CHECK_PREV(elm, field); \ if (LIST_NEXT((elm), field) != NULL) \ LIST_NEXT((elm), field)->field.le_prev = \ (elm)->field.le_prev; \ *(elm)->field.le_prev = LIST_NEXT((elm), field); \ TRASHIT(*oldnext); \ TRASHIT(*oldprev); \ } while (0) #define LIST_SWAP(head1, head2, type, field) do { \ struct type *swap_tmp = LIST_FIRST((head1)); \ LIST_FIRST((head1)) = LIST_FIRST((head2)); \ LIST_FIRST((head2)) = swap_tmp; \ if ((swap_tmp = LIST_FIRST((head1))) != NULL) \ swap_tmp->field.le_prev = &LIST_FIRST((head1)); \ if ((swap_tmp = LIST_FIRST((head2))) != NULL) \ swap_tmp->field.le_prev = &LIST_FIRST((head2)); \ } while (0) /* * Tail queue declarations. */ #define TAILQ_HEAD(name, type) \ struct name { \ struct type *tqh_first; /* first element */ \ struct type **tqh_last; /* addr of last next element */ \ TRACEBUF \ } #define TAILQ_HEAD_INITIALIZER(head) \ { NULL, &(head).tqh_first, TRACEBUF_INITIALIZER } #define TAILQ_ENTRY(type) \ struct { \ struct type *tqe_next; /* next element */ \ struct type **tqe_prev; /* address of previous next element */ \ TRACEBUF \ } /* * Tail queue functions. */ #if (defined(_KERNEL) && defined(INVARIANTS)) #define QMD_TAILQ_CHECK_HEAD(head, field) do { \ if (!TAILQ_EMPTY(head) && \ TAILQ_FIRST((head))->field.tqe_prev != \ &TAILQ_FIRST((head))) \ panic("Bad tailq head %p first->prev != head", (head)); \ } while (0) #define QMD_TAILQ_CHECK_TAIL(head, field) do { \ if (*(head)->tqh_last != NULL) \ panic("Bad tailq NEXT(%p->tqh_last) != NULL", (head)); \ } while (0) #define QMD_TAILQ_CHECK_NEXT(elm, field) do { \ if (TAILQ_NEXT((elm), field) != NULL && \ TAILQ_NEXT((elm), field)->field.tqe_prev != \ &((elm)->field.tqe_next)) \ panic("Bad link elm %p next->prev != elm", (elm)); \ } while (0) #define QMD_TAILQ_CHECK_PREV(elm, field) do { \ if (*(elm)->field.tqe_prev != (elm)) \ panic("Bad link elm %p prev->next != elm", (elm)); \ } while (0) #else #define QMD_TAILQ_CHECK_HEAD(head, field) #define QMD_TAILQ_CHECK_TAIL(head, headname) #define QMD_TAILQ_CHECK_NEXT(elm, field) #define QMD_TAILQ_CHECK_PREV(elm, field) #endif /* (_KERNEL && INVARIANTS) */ #define TAILQ_CONCAT(head1, head2, field) do { \ if (!TAILQ_EMPTY(head2)) { \ *(head1)->tqh_last = (head2)->tqh_first; \ (head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \ (head1)->tqh_last = (head2)->tqh_last; \ TAILQ_INIT((head2)); \ QMD_TRACE_HEAD(head1); \ QMD_TRACE_HEAD(head2); \ } \ } while (0) #define TAILQ_EMPTY(head) ((head)->tqh_first == NULL) #define TAILQ_FIRST(head) ((head)->tqh_first) #define TAILQ_FOREACH(var, head, field) \ for ((var) = TAILQ_FIRST((head)); \ (var); \ (var) = TAILQ_NEXT((var), field)) #define TAILQ_FOREACH_FROM(var, head, field) \ for ((var) = ((var) ? (var) : TAILQ_FIRST((head))); \ (var); \ (var) = TAILQ_NEXT((var), field)) #define TAILQ_FOREACH_SAFE(var, head, field, tvar) \ for ((var) = TAILQ_FIRST((head)); \ (var) && ((tvar) = TAILQ_NEXT((var), field), 1); \ (var) = (tvar)) #define TAILQ_FOREACH_FROM_SAFE(var, head, field, tvar) \ for ((var) = ((var) ? (var) : TAILQ_FIRST((head))); \ (var) && ((tvar) = TAILQ_NEXT((var), field), 1); \ (var) = (tvar)) #define TAILQ_FOREACH_REVERSE(var, head, headname, field) \ for ((var) = TAILQ_LAST((head), headname); \ (var); \ (var) = TAILQ_PREV((var), headname, field)) #define TAILQ_FOREACH_REVERSE_FROM(var, head, headname, field) \ for ((var) = ((var) ? (var) : TAILQ_LAST((head), headname)); \ (var); \ (var) = TAILQ_PREV((var), headname, field)) #define TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \ for ((var) = TAILQ_LAST((head), headname); \ (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1); \ (var) = (tvar)) #define TAILQ_FOREACH_REVERSE_FROM_SAFE(var, head, headname, field, tvar) \ for ((var) = ((var) ? (var) : TAILQ_LAST((head), headname)); \ (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1); \ (var) = (tvar)) #define TAILQ_INIT(head) do { \ TAILQ_FIRST((head)) = NULL; \ (head)->tqh_last = &TAILQ_FIRST((head)); \ QMD_TRACE_HEAD(head); \ } while (0) #define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \ QMD_TAILQ_CHECK_NEXT(listelm, field); \ if ((TAILQ_NEXT((elm), field) = TAILQ_NEXT((listelm), field)) != NULL)\ TAILQ_NEXT((elm), field)->field.tqe_prev = \ &TAILQ_NEXT((elm), field); \ else { \ (head)->tqh_last = &TAILQ_NEXT((elm), field); \ QMD_TRACE_HEAD(head); \ } \ TAILQ_NEXT((listelm), field) = (elm); \ (elm)->field.tqe_prev = &TAILQ_NEXT((listelm), field); \ QMD_TRACE_ELEM(&(elm)->field); \ QMD_TRACE_ELEM(&listelm->field); \ } while (0) #define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \ QMD_TAILQ_CHECK_PREV(listelm, field); \ (elm)->field.tqe_prev = (listelm)->field.tqe_prev; \ TAILQ_NEXT((elm), field) = (listelm); \ *(listelm)->field.tqe_prev = (elm); \ (listelm)->field.tqe_prev = &TAILQ_NEXT((elm), field); \ QMD_TRACE_ELEM(&(elm)->field); \ QMD_TRACE_ELEM(&listelm->field); \ } while (0) #define TAILQ_INSERT_HEAD(head, elm, field) do { \ QMD_TAILQ_CHECK_HEAD(head, field); \ if ((TAILQ_NEXT((elm), field) = TAILQ_FIRST((head))) != NULL) \ TAILQ_FIRST((head))->field.tqe_prev = \ &TAILQ_NEXT((elm), field); \ else \ (head)->tqh_last = &TAILQ_NEXT((elm), field); \ TAILQ_FIRST((head)) = (elm); \ (elm)->field.tqe_prev = &TAILQ_FIRST((head)); \ QMD_TRACE_HEAD(head); \ QMD_TRACE_ELEM(&(elm)->field); \ } while (0) #define TAILQ_INSERT_TAIL(head, elm, field) do { \ QMD_TAILQ_CHECK_TAIL(head, field); \ TAILQ_NEXT((elm), field) = NULL; \ (elm)->field.tqe_prev = (head)->tqh_last; \ *(head)->tqh_last = (elm); \ (head)->tqh_last = &TAILQ_NEXT((elm), field); \ QMD_TRACE_HEAD(head); \ QMD_TRACE_ELEM(&(elm)->field); \ } while (0) #define TAILQ_LAST(head, headname) \ (*(((struct headname *)((head)->tqh_last))->tqh_last)) #define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next) #define TAILQ_PREV(elm, headname, field) \ (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last)) #define TAILQ_REMOVE(head, elm, field) do { \ QMD_SAVELINK(oldnext, (elm)->field.tqe_next); \ QMD_SAVELINK(oldprev, (elm)->field.tqe_prev); \ QMD_TAILQ_CHECK_NEXT(elm, field); \ QMD_TAILQ_CHECK_PREV(elm, field); \ if ((TAILQ_NEXT((elm), field)) != NULL) \ TAILQ_NEXT((elm), field)->field.tqe_prev = \ (elm)->field.tqe_prev; \ else { \ (head)->tqh_last = (elm)->field.tqe_prev; \ QMD_TRACE_HEAD(head); \ } \ *(elm)->field.tqe_prev = TAILQ_NEXT((elm), field); \ TRASHIT(*oldnext); \ TRASHIT(*oldprev); \ QMD_TRACE_ELEM(&(elm)->field); \ } while (0) #define TAILQ_SWAP(head1, head2, type, field) do { \ struct type *swap_first = (head1)->tqh_first; \ struct type **swap_last = (head1)->tqh_last; \ (head1)->tqh_first = (head2)->tqh_first; \ (head1)->tqh_last = (head2)->tqh_last; \ (head2)->tqh_first = swap_first; \ (head2)->tqh_last = swap_last; \ if ((swap_first = (head1)->tqh_first) != NULL) \ swap_first->field.tqe_prev = &(head1)->tqh_first; \ else \ (head1)->tqh_last = &(head1)->tqh_first; \ if ((swap_first = (head2)->tqh_first) != NULL) \ swap_first->field.tqe_prev = &(head2)->tqh_first; \ else \ (head2)->tqh_last = &(head2)->tqh_first; \ } while (0) #endif /* !_SYS_QUEUE_H_ */ bgpq3-0.1.36.1/sys_tree.h000066400000000000000000000624071416330673000147760ustar00rootroot00000000000000/* $NetBSD: tree.h,v 1.8 2004/03/28 19:38:30 provos Exp $ */ /* $OpenBSD: tree.h,v 1.7 2002/10/17 21:51:54 art Exp $ */ /* $FreeBSD: stable/10/sys/sys/tree.h 189204 2009-03-01 04:57:23Z bms $ */ /*- * Copyright 2002 Niels Provos * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 _SYS_TREE_H_ #define _SYS_TREE_H_ #if HAVE_SYS_CDEFS_H #include #endif /* * This file defines data structures for different types of trees: * splay trees and red-black trees. * * A splay tree is a self-organizing data structure. Every operation * on the tree causes a splay to happen. The splay moves the requested * node to the root of the tree and partly rebalances it. * * This has the benefit that request locality causes faster lookups as * the requested nodes move to the top of the tree. On the other hand, * every lookup causes memory writes. * * The Balance Theorem bounds the total access time for m operations * and n inserts on an initially empty tree as O((m + n)lg n). The * amortized cost for a sequence of m accesses to a splay tree is O(lg n); * * A red-black tree is a binary search tree with the node color as an * extra attribute. It fulfills a set of conditions: * - every search path from the root to a leaf consists of the * same number of black nodes, * - each red node (except for the root) has a black parent, * - each leaf node is black. * * Every operation on a red-black tree is bounded as O(lg n). * The maximum height of a red-black tree is 2lg (n+1). */ #define SPLAY_HEAD(name, type) \ struct name { \ struct type *sph_root; /* root of the tree */ \ } #define SPLAY_INITIALIZER(root) \ { NULL } #define SPLAY_INIT(root) do { \ (root)->sph_root = NULL; \ } while (/*CONSTCOND*/ 0) #define SPLAY_ENTRY(type) \ struct { \ struct type *spe_left; /* left element */ \ struct type *spe_right; /* right element */ \ } #define SPLAY_LEFT(elm, field) (elm)->field.spe_left #define SPLAY_RIGHT(elm, field) (elm)->field.spe_right #define SPLAY_ROOT(head) (head)->sph_root #define SPLAY_EMPTY(head) (SPLAY_ROOT(head) == NULL) /* SPLAY_ROTATE_{LEFT,RIGHT} expect that tmp hold SPLAY_{RIGHT,LEFT} */ #define SPLAY_ROTATE_RIGHT(head, tmp, field) do { \ SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(tmp, field); \ SPLAY_RIGHT(tmp, field) = (head)->sph_root; \ (head)->sph_root = tmp; \ } while (/*CONSTCOND*/ 0) #define SPLAY_ROTATE_LEFT(head, tmp, field) do { \ SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(tmp, field); \ SPLAY_LEFT(tmp, field) = (head)->sph_root; \ (head)->sph_root = tmp; \ } while (/*CONSTCOND*/ 0) #define SPLAY_LINKLEFT(head, tmp, field) do { \ SPLAY_LEFT(tmp, field) = (head)->sph_root; \ tmp = (head)->sph_root; \ (head)->sph_root = SPLAY_LEFT((head)->sph_root, field); \ } while (/*CONSTCOND*/ 0) #define SPLAY_LINKRIGHT(head, tmp, field) do { \ SPLAY_RIGHT(tmp, field) = (head)->sph_root; \ tmp = (head)->sph_root; \ (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field); \ } while (/*CONSTCOND*/ 0) #define SPLAY_ASSEMBLE(head, node, left, right, field) do { \ SPLAY_RIGHT(left, field) = SPLAY_LEFT((head)->sph_root, field); \ SPLAY_LEFT(right, field) = SPLAY_RIGHT((head)->sph_root, field);\ SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(node, field); \ SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(node, field); \ } while (/*CONSTCOND*/ 0) /* Generates prototypes and inline functions */ #define SPLAY_PROTOTYPE(name, type, field, cmp) \ void name##_SPLAY(struct name *, struct type *); \ void name##_SPLAY_MINMAX(struct name *, int); \ struct type *name##_SPLAY_INSERT(struct name *, struct type *); \ struct type *name##_SPLAY_REMOVE(struct name *, struct type *); \ \ /* Finds the node with the same key as elm */ \ static __inline struct type * \ name##_SPLAY_FIND(struct name *head, struct type *elm) \ { \ if (SPLAY_EMPTY(head)) \ return(NULL); \ name##_SPLAY(head, elm); \ if ((cmp)(elm, (head)->sph_root) == 0) \ return (head->sph_root); \ return (NULL); \ } \ \ static __inline struct type * \ name##_SPLAY_NEXT(struct name *head, struct type *elm) \ { \ name##_SPLAY(head, elm); \ if (SPLAY_RIGHT(elm, field) != NULL) { \ elm = SPLAY_RIGHT(elm, field); \ while (SPLAY_LEFT(elm, field) != NULL) { \ elm = SPLAY_LEFT(elm, field); \ } \ } else \ elm = NULL; \ return (elm); \ } \ \ static __inline struct type * \ name##_SPLAY_MIN_MAX(struct name *head, int val) \ { \ name##_SPLAY_MINMAX(head, val); \ return (SPLAY_ROOT(head)); \ } /* Main splay operation. * Moves node close to the key of elm to top */ #define SPLAY_GENERATE(name, type, field, cmp) \ struct type * \ name##_SPLAY_INSERT(struct name *head, struct type *elm) \ { \ if (SPLAY_EMPTY(head)) { \ SPLAY_LEFT(elm, field) = SPLAY_RIGHT(elm, field) = NULL; \ } else { \ int __comp; \ name##_SPLAY(head, elm); \ __comp = (cmp)(elm, (head)->sph_root); \ if(__comp < 0) { \ SPLAY_LEFT(elm, field) = SPLAY_LEFT((head)->sph_root, field);\ SPLAY_RIGHT(elm, field) = (head)->sph_root; \ SPLAY_LEFT((head)->sph_root, field) = NULL; \ } else if (__comp > 0) { \ SPLAY_RIGHT(elm, field) = SPLAY_RIGHT((head)->sph_root, field);\ SPLAY_LEFT(elm, field) = (head)->sph_root; \ SPLAY_RIGHT((head)->sph_root, field) = NULL; \ } else \ return ((head)->sph_root); \ } \ (head)->sph_root = (elm); \ return (NULL); \ } \ \ struct type * \ name##_SPLAY_REMOVE(struct name *head, struct type *elm) \ { \ struct type *__tmp; \ if (SPLAY_EMPTY(head)) \ return (NULL); \ name##_SPLAY(head, elm); \ if ((cmp)(elm, (head)->sph_root) == 0) { \ if (SPLAY_LEFT((head)->sph_root, field) == NULL) { \ (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);\ } else { \ __tmp = SPLAY_RIGHT((head)->sph_root, field); \ (head)->sph_root = SPLAY_LEFT((head)->sph_root, field);\ name##_SPLAY(head, elm); \ SPLAY_RIGHT((head)->sph_root, field) = __tmp; \ } \ return (elm); \ } \ return (NULL); \ } \ \ void \ name##_SPLAY(struct name *head, struct type *elm) \ { \ struct type __node, *__left, *__right, *__tmp; \ int __comp; \ \ SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\ __left = __right = &__node; \ \ while ((__comp = (cmp)(elm, (head)->sph_root)) != 0) { \ if (__comp < 0) { \ __tmp = SPLAY_LEFT((head)->sph_root, field); \ if (__tmp == NULL) \ break; \ if ((cmp)(elm, __tmp) < 0){ \ SPLAY_ROTATE_RIGHT(head, __tmp, field); \ if (SPLAY_LEFT((head)->sph_root, field) == NULL)\ break; \ } \ SPLAY_LINKLEFT(head, __right, field); \ } else if (__comp > 0) { \ __tmp = SPLAY_RIGHT((head)->sph_root, field); \ if (__tmp == NULL) \ break; \ if ((cmp)(elm, __tmp) > 0){ \ SPLAY_ROTATE_LEFT(head, __tmp, field); \ if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\ break; \ } \ SPLAY_LINKRIGHT(head, __left, field); \ } \ } \ SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \ } \ \ /* Splay with either the minimum or the maximum element \ * Used to find minimum or maximum element in tree. \ */ \ void name##_SPLAY_MINMAX(struct name *head, int __comp) \ { \ struct type __node, *__left, *__right, *__tmp; \ \ SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\ __left = __right = &__node; \ \ while (1) { \ if (__comp < 0) { \ __tmp = SPLAY_LEFT((head)->sph_root, field); \ if (__tmp == NULL) \ break; \ if (__comp < 0){ \ SPLAY_ROTATE_RIGHT(head, __tmp, field); \ if (SPLAY_LEFT((head)->sph_root, field) == NULL)\ break; \ } \ SPLAY_LINKLEFT(head, __right, field); \ } else if (__comp > 0) { \ __tmp = SPLAY_RIGHT((head)->sph_root, field); \ if (__tmp == NULL) \ break; \ if (__comp > 0) { \ SPLAY_ROTATE_LEFT(head, __tmp, field); \ if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\ break; \ } \ SPLAY_LINKRIGHT(head, __left, field); \ } \ } \ SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \ } #define SPLAY_NEGINF -1 #define SPLAY_INF 1 #define SPLAY_INSERT(name, x, y) name##_SPLAY_INSERT(x, y) #define SPLAY_REMOVE(name, x, y) name##_SPLAY_REMOVE(x, y) #define SPLAY_FIND(name, x, y) name##_SPLAY_FIND(x, y) #define SPLAY_NEXT(name, x, y) name##_SPLAY_NEXT(x, y) #define SPLAY_MIN(name, x) (SPLAY_EMPTY(x) ? NULL \ : name##_SPLAY_MIN_MAX(x, SPLAY_NEGINF)) #define SPLAY_MAX(name, x) (SPLAY_EMPTY(x) ? NULL \ : name##_SPLAY_MIN_MAX(x, SPLAY_INF)) #define SPLAY_FOREACH(x, name, head) \ for ((x) = SPLAY_MIN(name, head); \ (x) != NULL; \ (x) = SPLAY_NEXT(name, head, x)) /* Macros that define a red-black tree */ #define RB_HEAD(name, type) \ struct name { \ struct type *rbh_root; /* root of the tree */ \ } #define RB_INITIALIZER(root) \ { NULL } #define RB_INIT(root) do { \ (root)->rbh_root = NULL; \ } while (/*CONSTCOND*/ 0) #define RB_BLACK 0 #define RB_RED 1 #define RB_ENTRY(type) \ struct { \ struct type *rbe_left; /* left element */ \ struct type *rbe_right; /* right element */ \ struct type *rbe_parent; /* parent element */ \ int rbe_color; /* node color */ \ } #define RB_LEFT(elm, field) (elm)->field.rbe_left #define RB_RIGHT(elm, field) (elm)->field.rbe_right #define RB_PARENT(elm, field) (elm)->field.rbe_parent #define RB_COLOR(elm, field) (elm)->field.rbe_color #define RB_ROOT(head) (head)->rbh_root #define RB_EMPTY(head) (RB_ROOT(head) == NULL) #define RB_SET(elm, parent, field) do { \ RB_PARENT(elm, field) = parent; \ RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL; \ RB_COLOR(elm, field) = RB_RED; \ } while (/*CONSTCOND*/ 0) #define RB_SET_BLACKRED(black, red, field) do { \ RB_COLOR(black, field) = RB_BLACK; \ RB_COLOR(red, field) = RB_RED; \ } while (/*CONSTCOND*/ 0) #ifndef RB_AUGMENT #define RB_AUGMENT(x) do {} while (0) #endif #define RB_ROTATE_LEFT(head, elm, tmp, field) do { \ (tmp) = RB_RIGHT(elm, field); \ if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field)) != NULL) { \ RB_PARENT(RB_LEFT(tmp, field), field) = (elm); \ } \ RB_AUGMENT(elm); \ if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) { \ if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \ RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \ else \ RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \ } else \ (head)->rbh_root = (tmp); \ RB_LEFT(tmp, field) = (elm); \ RB_PARENT(elm, field) = (tmp); \ RB_AUGMENT(tmp); \ if ((RB_PARENT(tmp, field))) \ RB_AUGMENT(RB_PARENT(tmp, field)); \ } while (/*CONSTCOND*/ 0) #define RB_ROTATE_RIGHT(head, elm, tmp, field) do { \ (tmp) = RB_LEFT(elm, field); \ if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field)) != NULL) { \ RB_PARENT(RB_RIGHT(tmp, field), field) = (elm); \ } \ RB_AUGMENT(elm); \ if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field)) != NULL) { \ if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \ RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \ else \ RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \ } else \ (head)->rbh_root = (tmp); \ RB_RIGHT(tmp, field) = (elm); \ RB_PARENT(elm, field) = (tmp); \ RB_AUGMENT(tmp); \ if ((RB_PARENT(tmp, field))) \ RB_AUGMENT(RB_PARENT(tmp, field)); \ } while (/*CONSTCOND*/ 0) /* Generates prototypes and inline functions */ #define RB_PROTOTYPE(name, type, field, cmp) \ RB_PROTOTYPE_INTERNAL(name, type, field, cmp,) #define RB_PROTOTYPE_STATIC(name, type, field, cmp) \ RB_PROTOTYPE_INTERNAL(name, type, field, cmp, __unused static) #define RB_PROTOTYPE_INTERNAL(name, type, field, cmp, attr) \ attr void name##_RB_INSERT_COLOR(struct name *, struct type *); \ attr void name##_RB_REMOVE_COLOR(struct name *, struct type *, struct type *);\ attr struct type *name##_RB_REMOVE(struct name *, struct type *); \ attr struct type *name##_RB_INSERT(struct name *, struct type *); \ attr struct type *name##_RB_FIND(struct name *, struct type *); \ attr struct type *name##_RB_NFIND(struct name *, struct type *); \ attr struct type *name##_RB_NEXT(struct type *); \ attr struct type *name##_RB_PREV(struct type *); \ attr struct type *name##_RB_MINMAX(struct name *, int); \ \ /* Main rb operation. * Moves node close to the key of elm to top */ #define RB_GENERATE(name, type, field, cmp) \ RB_GENERATE_INTERNAL(name, type, field, cmp,) #define RB_GENERATE_STATIC(name, type, field, cmp) \ RB_GENERATE_INTERNAL(name, type, field, cmp, __unused static) #define RB_GENERATE_INTERNAL(name, type, field, cmp, attr) \ attr void \ name##_RB_INSERT_COLOR(struct name *head, struct type *elm) \ { \ struct type *parent, *gparent, *tmp; \ while ((parent = RB_PARENT(elm, field)) != NULL && \ RB_COLOR(parent, field) == RB_RED) { \ gparent = RB_PARENT(parent, field); \ if (parent == RB_LEFT(gparent, field)) { \ tmp = RB_RIGHT(gparent, field); \ if (tmp && RB_COLOR(tmp, field) == RB_RED) { \ RB_COLOR(tmp, field) = RB_BLACK; \ RB_SET_BLACKRED(parent, gparent, field);\ elm = gparent; \ continue; \ } \ if (RB_RIGHT(parent, field) == elm) { \ RB_ROTATE_LEFT(head, parent, tmp, field);\ tmp = parent; \ parent = elm; \ elm = tmp; \ } \ RB_SET_BLACKRED(parent, gparent, field); \ RB_ROTATE_RIGHT(head, gparent, tmp, field); \ } else { \ tmp = RB_LEFT(gparent, field); \ if (tmp && RB_COLOR(tmp, field) == RB_RED) { \ RB_COLOR(tmp, field) = RB_BLACK; \ RB_SET_BLACKRED(parent, gparent, field);\ elm = gparent; \ continue; \ } \ if (RB_LEFT(parent, field) == elm) { \ RB_ROTATE_RIGHT(head, parent, tmp, field);\ tmp = parent; \ parent = elm; \ elm = tmp; \ } \ RB_SET_BLACKRED(parent, gparent, field); \ RB_ROTATE_LEFT(head, gparent, tmp, field); \ } \ } \ RB_COLOR(head->rbh_root, field) = RB_BLACK; \ } \ \ attr void \ name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, struct type *elm) \ { \ struct type *tmp; \ while ((elm == NULL || RB_COLOR(elm, field) == RB_BLACK) && \ elm != RB_ROOT(head)) { \ if (RB_LEFT(parent, field) == elm) { \ tmp = RB_RIGHT(parent, field); \ if (RB_COLOR(tmp, field) == RB_RED) { \ RB_SET_BLACKRED(tmp, parent, field); \ RB_ROTATE_LEFT(head, parent, tmp, field);\ tmp = RB_RIGHT(parent, field); \ } \ if ((RB_LEFT(tmp, field) == NULL || \ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\ (RB_RIGHT(tmp, field) == NULL || \ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\ RB_COLOR(tmp, field) = RB_RED; \ elm = parent; \ parent = RB_PARENT(elm, field); \ } else { \ if (RB_RIGHT(tmp, field) == NULL || \ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK) {\ struct type *oleft; \ if ((oleft = RB_LEFT(tmp, field)) \ != NULL) \ RB_COLOR(oleft, field) = RB_BLACK;\ RB_COLOR(tmp, field) = RB_RED; \ RB_ROTATE_RIGHT(head, tmp, oleft, field);\ tmp = RB_RIGHT(parent, field); \ } \ RB_COLOR(tmp, field) = RB_COLOR(parent, field);\ RB_COLOR(parent, field) = RB_BLACK; \ if (RB_RIGHT(tmp, field)) \ RB_COLOR(RB_RIGHT(tmp, field), field) = RB_BLACK;\ RB_ROTATE_LEFT(head, parent, tmp, field);\ elm = RB_ROOT(head); \ break; \ } \ } else { \ tmp = RB_LEFT(parent, field); \ if (RB_COLOR(tmp, field) == RB_RED) { \ RB_SET_BLACKRED(tmp, parent, field); \ RB_ROTATE_RIGHT(head, parent, tmp, field);\ tmp = RB_LEFT(parent, field); \ } \ if ((RB_LEFT(tmp, field) == NULL || \ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\ (RB_RIGHT(tmp, field) == NULL || \ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\ RB_COLOR(tmp, field) = RB_RED; \ elm = parent; \ parent = RB_PARENT(elm, field); \ } else { \ if (RB_LEFT(tmp, field) == NULL || \ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) {\ struct type *oright; \ if ((oright = RB_RIGHT(tmp, field)) \ != NULL) \ RB_COLOR(oright, field) = RB_BLACK;\ RB_COLOR(tmp, field) = RB_RED; \ RB_ROTATE_LEFT(head, tmp, oright, field);\ tmp = RB_LEFT(parent, field); \ } \ RB_COLOR(tmp, field) = RB_COLOR(parent, field);\ RB_COLOR(parent, field) = RB_BLACK; \ if (RB_LEFT(tmp, field)) \ RB_COLOR(RB_LEFT(tmp, field), field) = RB_BLACK;\ RB_ROTATE_RIGHT(head, parent, tmp, field);\ elm = RB_ROOT(head); \ break; \ } \ } \ } \ if (elm) \ RB_COLOR(elm, field) = RB_BLACK; \ } \ \ attr struct type * \ name##_RB_REMOVE(struct name *head, struct type *elm) \ { \ struct type *child, *parent, *old = elm; \ int color; \ if (RB_LEFT(elm, field) == NULL) \ child = RB_RIGHT(elm, field); \ else if (RB_RIGHT(elm, field) == NULL) \ child = RB_LEFT(elm, field); \ else { \ struct type *left; \ elm = RB_RIGHT(elm, field); \ while ((left = RB_LEFT(elm, field)) != NULL) \ elm = left; \ child = RB_RIGHT(elm, field); \ parent = RB_PARENT(elm, field); \ color = RB_COLOR(elm, field); \ if (child) \ RB_PARENT(child, field) = parent; \ if (parent) { \ if (RB_LEFT(parent, field) == elm) \ RB_LEFT(parent, field) = child; \ else \ RB_RIGHT(parent, field) = child; \ RB_AUGMENT(parent); \ } else \ RB_ROOT(head) = child; \ if (RB_PARENT(elm, field) == old) \ parent = elm; \ (elm)->field = (old)->field; \ if (RB_PARENT(old, field)) { \ if (RB_LEFT(RB_PARENT(old, field), field) == old)\ RB_LEFT(RB_PARENT(old, field), field) = elm;\ else \ RB_RIGHT(RB_PARENT(old, field), field) = elm;\ RB_AUGMENT(RB_PARENT(old, field)); \ } else \ RB_ROOT(head) = elm; \ RB_PARENT(RB_LEFT(old, field), field) = elm; \ if (RB_RIGHT(old, field)) \ RB_PARENT(RB_RIGHT(old, field), field) = elm; \ if (parent) { \ left = parent; \ do { \ RB_AUGMENT(left); \ } while ((left = RB_PARENT(left, field)) != NULL); \ } \ goto color; \ } \ parent = RB_PARENT(elm, field); \ color = RB_COLOR(elm, field); \ if (child) \ RB_PARENT(child, field) = parent; \ if (parent) { \ if (RB_LEFT(parent, field) == elm) \ RB_LEFT(parent, field) = child; \ else \ RB_RIGHT(parent, field) = child; \ RB_AUGMENT(parent); \ } else \ RB_ROOT(head) = child; \ color: \ if (color == RB_BLACK) \ name##_RB_REMOVE_COLOR(head, parent, child); \ return (old); \ } \ \ /* Inserts a node into the RB tree */ \ attr struct type * \ name##_RB_INSERT(struct name *head, struct type *elm) \ { \ struct type *tmp; \ struct type *parent = NULL; \ int comp = 0; \ tmp = RB_ROOT(head); \ while (tmp) { \ parent = tmp; \ comp = (cmp)(elm, parent); \ if (comp < 0) \ tmp = RB_LEFT(tmp, field); \ else if (comp > 0) \ tmp = RB_RIGHT(tmp, field); \ else \ return (tmp); \ } \ RB_SET(elm, parent, field); \ if (parent != NULL) { \ if (comp < 0) \ RB_LEFT(parent, field) = elm; \ else \ RB_RIGHT(parent, field) = elm; \ RB_AUGMENT(parent); \ } else \ RB_ROOT(head) = elm; \ name##_RB_INSERT_COLOR(head, elm); \ return (NULL); \ } \ \ /* Finds the node with the same key as elm */ \ attr struct type * \ name##_RB_FIND(struct name *head, struct type *elm) \ { \ struct type *tmp = RB_ROOT(head); \ int comp; \ while (tmp) { \ comp = cmp(elm, tmp); \ if (comp < 0) \ tmp = RB_LEFT(tmp, field); \ else if (comp > 0) \ tmp = RB_RIGHT(tmp, field); \ else \ return (tmp); \ } \ return (NULL); \ } \ \ /* Finds the first node greater than or equal to the search key */ \ attr struct type * \ name##_RB_NFIND(struct name *head, struct type *elm) \ { \ struct type *tmp = RB_ROOT(head); \ struct type *res = NULL; \ int comp; \ while (tmp) { \ comp = cmp(elm, tmp); \ if (comp < 0) { \ res = tmp; \ tmp = RB_LEFT(tmp, field); \ } \ else if (comp > 0) \ tmp = RB_RIGHT(tmp, field); \ else \ return (tmp); \ } \ return (res); \ } \ \ /* ARGSUSED */ \ attr struct type * \ name##_RB_NEXT(struct type *elm) \ { \ if (RB_RIGHT(elm, field)) { \ elm = RB_RIGHT(elm, field); \ while (RB_LEFT(elm, field)) \ elm = RB_LEFT(elm, field); \ } else { \ if (RB_PARENT(elm, field) && \ (elm == RB_LEFT(RB_PARENT(elm, field), field))) \ elm = RB_PARENT(elm, field); \ else { \ while (RB_PARENT(elm, field) && \ (elm == RB_RIGHT(RB_PARENT(elm, field), field)))\ elm = RB_PARENT(elm, field); \ elm = RB_PARENT(elm, field); \ } \ } \ return (elm); \ } \ \ /* ARGSUSED */ \ attr struct type * \ name##_RB_PREV(struct type *elm) \ { \ if (RB_LEFT(elm, field)) { \ elm = RB_LEFT(elm, field); \ while (RB_RIGHT(elm, field)) \ elm = RB_RIGHT(elm, field); \ } else { \ if (RB_PARENT(elm, field) && \ (elm == RB_RIGHT(RB_PARENT(elm, field), field))) \ elm = RB_PARENT(elm, field); \ else { \ while (RB_PARENT(elm, field) && \ (elm == RB_LEFT(RB_PARENT(elm, field), field)))\ elm = RB_PARENT(elm, field); \ elm = RB_PARENT(elm, field); \ } \ } \ return (elm); \ } \ \ attr struct type * \ name##_RB_MINMAX(struct name *head, int val) \ { \ struct type *tmp = RB_ROOT(head); \ struct type *parent = NULL; \ while (tmp) { \ parent = tmp; \ if (val < 0) \ tmp = RB_LEFT(tmp, field); \ else \ tmp = RB_RIGHT(tmp, field); \ } \ return (parent); \ } #define RB_NEGINF -1 #define RB_INF 1 #define RB_INSERT(name, x, y) name##_RB_INSERT(x, y) #define RB_REMOVE(name, x, y) name##_RB_REMOVE(x, y) #define RB_FIND(name, x, y) name##_RB_FIND(x, y) #define RB_NFIND(name, x, y) name##_RB_NFIND(x, y) #define RB_NEXT(name, x, y) name##_RB_NEXT(y) #define RB_PREV(name, x, y) name##_RB_PREV(y) #define RB_MIN(name, x) name##_RB_MINMAX(x, RB_NEGINF) #define RB_MAX(name, x) name##_RB_MINMAX(x, RB_INF) #define RB_FOREACH(x, name, head) \ for ((x) = RB_MIN(name, head); \ (x) != NULL; \ (x) = name##_RB_NEXT(x)) #define RB_FOREACH_FROM(x, name, y) \ for ((x) = (y); \ ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL); \ (x) = (y)) #define RB_FOREACH_SAFE(x, name, head, y) \ for ((x) = RB_MIN(name, head); \ ((x) != NULL) && ((y) = name##_RB_NEXT(x), (x) != NULL); \ (x) = (y)) #define RB_FOREACH_REVERSE(x, name, head) \ for ((x) = RB_MAX(name, head); \ (x) != NULL; \ (x) = name##_RB_PREV(x)) #define RB_FOREACH_REVERSE_FROM(x, name, y) \ for ((x) = (y); \ ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL); \ (x) = (y)) #define RB_FOREACH_REVERSE_SAFE(x, name, head, y) \ for ((x) = RB_MAX(name, head); \ ((x) != NULL) && ((y) = name##_RB_PREV(x), (x) != NULL); \ (x) = (y)) #endif /* _SYS_TREE_H_ */