pax_global_header00006660000000000000000000000064146326112660014521gustar00rootroot0000000000000052 comment=ce6a95d172dbefd0e310c46e0a0d9c56d19e34ca lacme-0.8.3/000077500000000000000000000000001463261126600126125ustar00rootroot00000000000000lacme-0.8.3/.gitignore000066400000000000000000000000431463261126600145770ustar00rootroot00000000000000# vim swapfiles .*.sw[po] /build/ lacme-0.8.3/COPYING000066400000000000000000001045171463261126600136550ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things. To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others. For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it. For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software. For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions. Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users. Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free. The precise terms and conditions for copying, distribution and modification follow. TERMS AND CONDITIONS 0. Definitions. "This License" refers to version 3 of the GNU General Public License. "Copyright" also means copyright-like laws that apply to other kinds of works, such as semiconductor masks. "The Program" refers to any copyrightable work licensed under this License. Each licensee is addressed as "you". "Licensees" and "recipients" may be individuals or organizations. To "modify" a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a "modified version" of the earlier work or a work "based on" the earlier work. A "covered work" means either the unmodified Program or a work based on the Program. To "propagate" a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well. To "convey" a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying. An interactive user interface displays "Appropriate Legal Notices" to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion. 1. Source Code. The "source code" for a work means the preferred form of the work for making modifications to it. "Object code" means any non-source form of a work. A "Standard Interface" means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language. The "System Libraries" of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A "Major Component", in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it. The "Corresponding Source" for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities. However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work. The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source. The Corresponding Source for a work in source code form is that same work. 2. Basic Permissions. All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law. You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you. Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary. 3. Protecting Users' Legal Rights From Anti-Circumvention Law. No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures. When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures. 4. Conveying Verbatim Copies. You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program. You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee. 5. Conveying Modified Source Versions. You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions: a) The work must carry prominent notices stating that you modified it, and giving a relevant date. b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to "keep intact all notices". c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it. d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so. A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an "aggregate" if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate. 6. Conveying Non-Source Forms. You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways: a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange. b) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge. c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b. d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements. e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d. A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work. A "User Product" is either (1) a "consumer product", which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a particular product received by a particular user, "normally used" refers to a typical or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or expects or is expected to use, the product. A product is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of the product. "Installation Information" for a User Product means any methods, procedures, authorization keys, or other information required to install and execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been made. If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM). The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network. Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying. 7. Additional Terms. "Additional permissions" are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions. When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission. Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms: a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or d) Limiting the use for publicity purposes of names of licensors or authors of the material; or e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors. All other non-permissive additional terms are considered "further restrictions" within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying. If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms. Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way. 8. Termination. You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11). However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation. Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice. Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10. 9. Acceptance Not Required for Having Copies. You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so. 10. Automatic Licensing of Downstream Recipients. Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License. An "entity transaction" is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts. You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it. 11. Patents. A "contributor" is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's "contributor version". A contributor's "essential patent claims" are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, "control" includes the right to grant patent sublicenses in a manner consistent with the requirements of this License. Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version. In the following three paragraphs, a "patent license" is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To "grant" such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party. If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. "Knowingly relying" means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid. If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it. A patent license is "discriminatory" if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007. Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law. 12. No Surrender of Others' Freedom. If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program. 13. Use with the GNU Affero General Public License. Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such. 14. Revised Versions of this License. The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License "or any later version" applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation. If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program. Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version. 15. Disclaimer of Warranty. THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 16. Limitation of Liability. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 17. Interpretation of Sections 15 and 16. If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . Also add information on how to contact you by electronic and paper mail. If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode: Copyright (C) This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box". You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see . The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read . lacme-0.8.3/Changelog000066400000000000000000000337251463261126600144360ustar00rootroot00000000000000lacme (0.8.3) upstream; + Fix post-issuance validation logic. We avoid pining the intermediate certificates in the bundle and instead validate the leaf certificate with intermediates supplied during issuance as untrusted (used for chain building only). Only the root certificates are used as trust anchor. Not pining intermediate certificates is in line with Let's Encrypt's latest recommendations. + Pass `-in /dev/stdin` option to openssl(1) to avoid warning with OpenSSL 3.2 or later. + Fix test suite. -- Guilhem Moulin Thu, 13 Jun 2024 17:39:34 +0200 lacme (0.8.2) upstream; + client: Handle "ready" → "processing" → "valid" status change during newOrder, instead of just "ready" → "valid". The latter may be what we observe when the server is fast enough, but according to RFC 8555 sec. 7.1.6 the state actually transitions via "processing" state and we need to account for that. - Test suite: Point stretch's archive URL to archive.d.o. -- Guilhem Moulin Tue, 25 Apr 2023 20:06:22 +0200 lacme (0.8.1) upstream; + lacme-accountd: improve log messages and refactor logging logic. + lacme-accountd: refuse to sign JWS with an invalid Protected Header. + lacme: don't write certificate(-chain) file on chown/chmod failure. + lacme: default mode for certificate(-chain) creation is 0644 minus umask restrictions. Also, always spawn the client with umask 0022 so a starting lacme(8) with a restrictive umask doesn't impede serving challenge files. + lacme: add 'owner' resp. 'mode' as (prefered) alias for 'chown' resp. 'chmod'. + lacme: split certificates using Net::SSLeay::PEM_* instead of calling openssl. + lacme: pass a temporary JSON file with the client configuration to the internal client, so it doesn't have to parse the INI file again. - lacme: in the [accountd] config, let lacme-accountd(1) do the %-expansion for 'config', not lacme(8) when building the command. - lacme-accountd: don't log debug messages unless --debug is set. - lacme: when getpwnam()/getgrnam()'s errno is 0, exclude it from error messages. - tests/drop-privileges: ensure failure to drop privileges yields an error instead of retaining root priviliges. - tests/cert-install: include tests for failing chown(2) due to unknown user/group name. - lacme: ignore empty values in settings 'chown', 'chmod', 'certificate' and 'certificate-chain'. - lacme: return an error when the 'mode'/'chown' isn't a number. - Makefile: replace '$(dir $@)' with '$(@D)'. - Test suite: Adjust against current Let's Encrypt staging environment. -- Guilhem Moulin Wed, 25 Jan 2023 03:23:51 +0100 lacme (0.8.0) upstream; * Breaking change: 'challenge-directory' now needs to be set to an *existing* directory (writable by the lacme client user). Since lacme(8) spawns a builtin webserver by default the change doesn't affect default configurations. Thanks to Benjamin Tietz for the idea and initial patch. * Breaking change: the 'iptables' option is now ignored unless the builtin webserver is used. * Unprivileged user/group for the internal client resp. webserver are now configurable at install time. * lacme: new flag `--force`, which aliases to `--min-days=-1`, i.e., forces renewal regardless of the expiration date of existing certificates. * Remove decomissioned intermediate CAs Authority X3 and X4 from the bundle. * Remove cross-signed intermediate CAs from the bundle and add the (self-signed) ISRG Root X1 and X2 instead. This allows us to fully validate provided X.509 chains using that self-contained bundle, regardless of which CAs is marqued as trusted under /etc/ssl/certs. This change bumps the minimum OpenSSL version to 1.1.0. * Breaking change: lacme(8) and lacme-accountd(1) respectively load their configuration file from /etc/lacme/lacme.conf resp. /etc/lacme/lacme-accountd.conf when running as root, and $XDG_CONFIG_HOME/lacme/lacme.conf resp. $XDG_CONFIG_HOME/lacme/lacme-accountd.conf when running as a normal user. There is no fallback to /etc anymore, and the lookup in the current directory as prefered choice is removed too. However lacme-accountd(1) can be used without configuration file under ~/.config/lacme as it treats a non-existent default location as an empty file. * The client, webserver, and accountd commands are now split on whitespace. This doesn't change the default behavior but allows using `ssh -T lacme@account.example.net lacme-accountd` to spawn a remote lacme-accountd server for instance. * Add test suite against Let's Encrypt's staging environment https://letsencrypt.org/docs/staging-environment/ . * lacme(8)'s 'config' option in the [accountd] section no longer have a default value. The previous default /etc/lacme/lacme-accountd.conf is still honored when root privileges are preserved (the default). * Deprecate setting 'privkey' in [accountd] section of the lacme(8) configuration file. One need to use the lacme-accountd(1) configuration file for that instead. * lacme(8): add %-specifiers support for --config=, --socket=, --config-certs= (and 'socket'/'config-certs'/'challenge-directory' configuration options *before* privilege drop; and for the [accountd] section 'command'/'config' configuration options *after* privilege drop). * lacme-accountd(1): add %-specifiers support for --config=, --socket= and --privkey= (and 'socket'/'privkey' configuration options). * lacme-accountd(1): base64url-decode incoming signature requests shown in messages to the standard error. * lacme-accountd(1): new setting 'logfile' to log (decoded) incoming signature requests to a file. * lacme-accountd(1): new setting 'keyid' to easily revoke all account management access from the client. + Improve nginx/apache2 snippets for direct serving of challenge files (with the new 'challenge-directory' logic symlinks can be disabled). + Split Nginx and Apapche2 static configuration snippets into seperate files. That way users prefering that over reverse-proxying can just source/enable the relevant files without having to uncomment anything. + Add support for TLS Feature extension from RFC 7633; this is mostly useful for OCSP Must-Staple. + client: use "lacme-client/$VERSION" as User-Agent header. + Consolidate error messages for consistency. + Sanitize environment when spawning the lacme client, webserver and accountd. + accountd: replace internal option --conn-fd=FD with flag --stdio. Using stdin/stdout makes it possible to tunnel the accountd connection through ssh. The new flag is documented to allow safe usage is authorized_keys(5) restrictions. + Remove dependency on List::Util (core module). + accountd: Pass JWA and JWK thumbprint via extended greeting data. This gives better forward flexibility. - lacme: delay webserver socket shutdown to after the process has terminated. - documentation: suggest to generate private key material with genpkey(1ssl); also suggest a command to generate an ECDSA key not just RSA; hint at which key algorithms are supported. - documentation: clarify that "file:/path/to/account.key" can point to a symmetrically-encrypted private key. - documentation: emphasize default values in the config file, and move the most common options ('hash', 'keyUsage', 'CAfile', 'min-days') to the default section. - Raise client timeout from 10 to 30s. - Remove dependency on Types::Serialiser. - client: fail immediately when the accountd is unreachable. - Makefile: set executable bit for $(bindir)/lacme-accountd and $(sbindir)/lacme. - client: avoid "Use of uninitialized value in pattern match (m//)" perl warnings when the accountd socket can't be reached. - webserver: reopen stdin from /dev/null. - Use 'acme-challenge.XXXXXXXXXX' as template for the temporary ACME challenge directory. - Set the DEBUG environment variable to 0/1 instead of ""/1. - Use File::Basename::dirname() to correctly extract the parent directory of the socket path. - client: Print Terms of Service URL for 'account' command. -- Guilhem Moulin Mon, 22 Feb 2021 03:19:57 +0100 lacme (0.7) upstream; * Breaking change: the certificate indicated by 'CAfile' is no longer used as is in 'certificate-chain' (along with the leaf cert). The chain returned by the ACME v2 endpoint is used instead. This allows for more flexibility with respect to key/CA rotation, cf. https://letsencrypt.org/2020/11/06/own-two-feet.html and https://community.letsencrypt.org/t/beginning-issuance-from-r3/139018 + 'CAfile' now defaults to @@datadir@@/lacme/ca-certificates.crt which is a concatenation of all known active CA certificates (which includes the previous default). -- Guilhem Moulin Wed, 25 Nov 2020 23:39:39 +0100 lacme (0.6.1) upstream; + Adapt Apache2 snippet to Apache2 2.4. + Ignore [accountd] section from lacme.conf when the --socket option is defined. This allows remotely-controlled lacme processes being controlled without modifying an config files. * Makefile: major refactoring, add install and uninstall targets, honor BUILD_DOCDIR and DESTDIR variables. * Install lacme manual to section 8. * Change default libexec dir from /usr/lib/lacme to /usr/libexec/lacme. * Makefile: Use variables for target directories etc. -- Guilhem Moulin Tue, 04 Aug 2020 01:39:47 +0200 lacme (0.6) upstream; + client: poll order URL instead of each authz URL successively. + lacme: new option 'account --deactivate' for client-initiated account deactivation, see RFC 8555 sec. 7.3.6. - lacme, client: new dependency Date::Parse, don't parse RFC 3339 datetime strings from X.509 certs manually. - lacme: assume that the iptables(8) binaries are under /usr/sbin not /sbin. As of Buster this is the case, and the maintainer plans to drop compatibility symlinks once Bullseye is released. - Link to RFC 8555 instead of the ACME I-D URL. - Issue GET and POST-as-GET requests (RFC 8555 sec. 6.3) for the authorizations, order and certificate URLs. -- Guilhem Moulin Wed, 21 Aug 2019 18:23:50 +0200 lacme (0.5) upstream; + Use ACME v2 endpoints (update protocol to the last draft of the spec https://tools.ietf.org/html/draft-ietf-acme-acme-12 ). Remove the 'reg=' command, and rename the 'new-reg', 'new-cert' and 'revoke-cert' commands to 'account', 'newOrder', and 'revokeCert' respectively, to match the the URI resource names. For backward compatibility 'new-cert' and 'revoke-cert' remain supported. - Fix manpage generation with pandoc >=2.1 -- Guilhem Moulin Thu, 26 Apr 2018 16:48:13 +0200 lacme (0.4) upstream; * Fix generation of manpages with pandoc >=1.18 * Copy snippets/*.conf to /etc/lacme -- Guilhem Moulin Fri, 28 Jul 2017 00:16:06 +0200 lacme (0.3) upstream; + When parsing config-cert files and directories (default "lacme-certs.conf lacme-certs.conf.d"), import the default section of files read earlier. + new-cert: create certificate files atomically. + webserver: allow listening to multiple addresses (useful when dual IPv4/IPv6 stack is not supported). Listen to a UNIX-domain socket by default . + webserver: don't install temporary iptables by default. Hosts without a public HTTP daemon listening on port 80 need to set the 'listen' option to [::] and/or 0.0.0.0, and possibly set the 'iptables' option to Yes. + Change 'min-days' default from 10 to 21, to avoid expiration notices from Let's Encrypt when auto-renewal is done by a cronjob. + Provide nginx and apache2 configuration snippets. - Ensure lacme's config file descriptor is not passed to the accountd or webserver components. - new-cert: sort section names if not passed explicitely. - new-cert: new CLI option "min-days" overriding the value found in the configuration file. - new-cert: mark the basicConstraints (CA:FALSE) and keyUsage x509v3 extensions as critical in the CSR, following upstream fix of Boulder's issue #565. - webserver: refuse to follow symlink when serving ACME challenge responses. When dropping privileges to a dedicated UID (recommended) only the ACME client could write to its current directory anyway, so following symlinks was not a serious vulnerability. - lacme(1), lacme-accountd(1): fix version number shown with --version. - client: remove potential race when creating ACME challenge response files. - When using open with mode "<&=" or ">&=", ensure the expression (fileno) is interpreted as an integer. (This failed in Perl v5.14.2 from Debian Jessie.) - Specify minimum required Perl version (v5.14.2). Moreover lacme(1) requires Socket 1.95 or later (for instance for IPPROTO_IPV6). -- Guilhem Moulin Sun, 19 Feb 2017 13:08:41 +0100 lacme (0.2) upstream; + Honor Retry-After headers for certificate issuance and challenge responses. + Update example of Subscriber Agreement URL to v1.1.1. + lacme: automaticall spawn lacme-acountd when a "[accountd]" section is present in the configuration file. The "socket" option is then ignored, and the two processes communicate through a socket pair. + lacme: add an option --quiet to avoid mentioning valid certs (useful in cronjobs) + "config-certs" now points to a space separated list of files or directories. New default "lacme-certs.conf lacme-certs.conf.d/". - Minor manpage fixes - More useful message upon Validation Challenge failure. - If restricting access via umask() fails, don't include errno in the error message as it's not set on failure. -- Guilhem Moulin Sat, 03 Dec 2016 16:40:56 +0100 lacme (0.1) upstream; * Initial public release. Development was started in December 2015. -- Guilhem Moulin Tue, 14 Jun 2016 17:30:58 +0200 lacme-0.8.3/INSTALL000066400000000000000000000033441463261126600136470ustar00rootroot00000000000000lacme-accountd depends on the following Perl modules: - Config::Tiny - Crypt::OpenSSL::RSA (for PEM-encoded key material) - Crypt::OpenSSL::Bignum (for PEM-encoded key material) - Errno (core module) - File::Basename (core module) - Getopt::Long (core module) - JSON (optionally C/XS-accelerated with JSON::XS) - MIME::Base64 (core module) - Socket (core module) On Debian GNU/Linux systems, these dependencies can be installed with the following command: apt-get install libconfig-tiny-perl libcrypt-openssl-rsa-perl libcrypt-openssl-bignum-perl libjson-perl lacme depends on OpenSSL ≥1.1.0 and the following Perl modules: - Config::Tiny - Digest::SHA (core module) - Date::Parse - Errno (core module) - Fcntl (core module) - File::Basename (core module) - File::Temp (core module) - Getopt::Long (core module) - JSON (optionally C/XS-accelerated with JSON::XS) - LWP::UserAgent - LWP::Protocol::https (for https:// ACME directory URIs) - MIME::Base64 (core module) - Net::SSLeay - POSIX (core module) - Socket (core module) On Debian GNU/Linux systems, these dependencies can be installed with the following command: apt-get install openssl \ libconfig-tiny-perl \ libtimedate-perl \ libjson-perl \ libwww-perl \ liblwp-protocol-https-perl \ libnet-ssleay-perl \ libtypes-serialiser-perl However Debian GNU/Linux users can also use gbp(1) from git-buildpackage to build their own package: $ git checkout debian/latest $ AUTO_DEBSIGN=no gbp buildpackage Alternatively, for the development version: $ git checkout debian/latest $ git merge master $ AUTO_DEBSIGN=no gbp buildpackage --git-force-create --git-upstream-tree=BRANCH lacme-0.8.3/Makefile000066400000000000000000000075761463261126600142710ustar00rootroot00000000000000DESTDIR ?= /usr/local BUILDDIR ?= ./build MANUAL_FILES = $(addprefix $(BUILDDIR)/,$(patsubst ./%.md,%,$(wildcard ./*.[1-9].md))) all: manual $(addprefix $(BUILDDIR)/,lacme lacme-accountd client webserver \ $(wildcard certs/* config/* snippets/*) \ certs/ca-certificates.crt certs-staging/ca-certificates.crt) doc: manual manual: $(MANUAL_FILES) # upper case the headers and remove the links $(MANUAL_FILES): $(BUILDDIR)/%: $(BUILDDIR)/%.md pandoc -f markdown -t json -- "$<" | ./pandoc2man.jq | pandoc -s -f json -t man -o "$@" # used for validation, see https://letsencrypt.org/certificates/ $(BUILDDIR)/certs/ca-certificates.crt: \ certs/isrgrootx1.pem \ certs/isrg-root-x2.pem mkdir -pv -- $(@D) cat -- $^ >$@ # Staging Environment for tests, see https://letsencrypt.org/docs/staging-environment/ $(BUILDDIR)/certs-staging/ca-certificates.crt: \ certs-staging/letsencrypt-stg-root-x[12].pem mkdir -pv -- $(@D) cat -- $^ >$@ prefix ?= $(DESTDIR) exec_prefix ?= $(prefix) bindir ?= $(exec_prefix)/bin sbindir ?= $(exec_prefix)/sbin libexecdir ?= $(exec_prefix)/libexec datarootdir ?= $(prefix)/share datadir ?= $(datarootdir) sysconfdir ?= $(prefix)/etc localstatedir ?= $(prefix)/var runstatedir ?= $(localstatedir)/run mandir ?= $(datarootdir)/man man1dir ?= $(mandir)/man1 man8dir ?= $(mandir)/man8 lacme_www_user ?= www-data lacme_www_group ?= www-data lacme_client_user ?= nobody lacme_client_group ?= nogroup acmeapi_server ?= https://acme-v02.api.letsencrypt.org/directory $(BUILDDIR)/%: % mkdir -pv -- $(@D) cp --no-dereference --preserve=mode,links,xattr -vfT -- "$<" "$@" sed -i "s#@@bindir@@#$(bindir)#g; \ s#@@sbindir@@#$(sbindir)#g; \ s#@@libexecdir@@#$(libexecdir)#g; \ s#@@datadir@@#$(datadir)#g; \ s#@@localstatedir@@#$(localstatedir)#g; \ s#@@runstatedir@@#$(runstatedir)#g; \ s#@@sysconfdir@@#$(sysconfdir)#g; \ s#@@lacme_www_user@@#$(lacme_www_user)#g; \ s#@@lacme_www_group@@#$(lacme_www_group)#g; \ s#@@lacme_client_user@@#$(lacme_client_user)#g; \ s#@@lacme_client_group@@#$(lacme_client_group)#g; \ s#@@acmeapi_server@@#$(acmeapi_server)#g; \ " -- "$@" release: @if ! git diff HEAD --quiet -- ./Changelog ./lacme ./lacme-accountd ./client; then \ echo "Dirty state, refusing to release!" >&2; \ exit 1; \ fi VERS=$$(dpkg-parsechangelog -l Changelog -SVersion 2>/dev/null) && \ if git rev-parse -q --verify "refs/tags/v$$VERS" >/dev/null; then echo "tag exists" 2>/dev/null; exit 1; fi && \ sed -ri "0,/^( -- .*) .*/ s//\\1 $(shell date -R)/" ./Changelog && \ sed -ri "0,/^(our\\s+\\\$$VERSION\\s*=\\s*)'[0-9.]+'\\s*;/ s//\\1'$$VERS';/" \ -- ./lacme ./lacme-accountd ./client && \ git commit -m "Prepare new release v$$VERS." \ -- ./Changelog ./lacme ./lacme-accountd ./client && \ git tag -sm "Release version $$VERS" "v$$VERS" install: all install -m0644 -vDt $(sysconfdir)/lacme -- $(BUILDDIR)/config/*.conf $(BUILDDIR)/snippets/*.conf install -m0755 -vd -- $(sysconfdir)/lacme/lacme-certs.conf.d install -m0644 -vDt $(datadir)/lacme -- $(BUILDDIR)/certs/* install -m0755 -vDt $(libexecdir)/lacme -- $(BUILDDIR)/client $(BUILDDIR)/webserver install -m0644 -vDt $(man1dir) -- $(BUILDDIR)/lacme-accountd.1 install -m0644 -vDt $(man8dir) -- $(BUILDDIR)/lacme.8 install -m0755 -vDt $(sbindir) -- $(BUILDDIR)/lacme install -m0755 -vDt $(bindir) -- $(BUILDDIR)/lacme-accountd install -m0755 -vdD -- $(sysconfdir)/apache2/conf-available ln -sv -- ../../lacme/apache2.conf $(sysconfdir)/apache2/conf-available/lacme.conf uninstall: rm -vf -- $(bindir)/lacme-accountd $(sbindir)/lacme rm -vf -- $(man1dir)/lacme-accountd.1 $(man8dir)/lacme.8 rm -rvf -- $(sysconfdir)/lacme $(datadir)/lacme $(libexecdir)/lacme rm -vf -- $(sysconfdir)/apache2/conf-available/lacme.conf clean: rm -rvf -- $(BUILDDIR) .PHONY: all doc manual release install uninstall clean lacme-0.8.3/README000066400000000000000000000064011463261126600134730ustar00rootroot00000000000000lacme is a small ACME client written with process isolation and minimal privileges in mind. It is divided into four components, each with its own executable: * A process to manage the account key and issue SHA-256 signatures needed for each ACME command. (This process binds to a UNIX-domain socket to reply to signature requests from the ACME client.) One can use the UNIX-domain socket forwarding facility of OpenSSH 6.7 and later to run this process on a different host. * A "master" process, which runs as root and is the only component with access to the private key material of the server keys. It is used to fork the ACME client (and optionally the ACME webserver) after dropping root privileges. For certificate issuances, it also generates Certificate Signing Requests, then verifies the validity of the issued certificate, and optionally reloads or restarts services when the notify option is set. * An actual ACME client, which builds ACME commands and dialogues with the remote ACME server. Since ACME commands need to be signed with the account key, the "master" process passes the UNIX-domain socket of the account key manager to the ACME client: data signatures are requested by writing the data to be signed to the socket. * For certificate issuances, an optional webserver which is spawned by the "master". (The only challenge type currently supported is "http-01", which requires a webserver to answer challenges.) That webserver only processes GET and HEAD requests under the "/.well-known/acme-challenge/" URI. Moreover temporary iptables(8) rules can be automatically installed to open the HTTP port. Consult the manuals for more information. https://guilhem.org/man/lacme.8.html https://guilhem.org/man/lacme-accountd.1.html _______________________________________________________________________ Requesting new Certificate Issuance with the ACME protocol generally works as follows: 1. Generate a Certificate Signing Request. This requires access to the private part of the server key. 2. Issue an issuance request against the ACME server. 3. Answer the ACME Identifier Validation Challenges. The challenge type "http-01" requires a webserver to listen on port 80 for each address for which an authorization request is issued; if there is no running webserver, root privileges are required to bind against port 80 and to install firewall rules to temporarily open the port. 4. Install the certificate (after verification) and restart the service. This usually requires root access as well. Steps 1,3,4 need to be run on the host for which an authorization request is issued. However the the issuance itself (step 2) could be done from another machine. Furthermore, each ACME command (step 2), as well as the key authorization token in step 3, need to be signed using an account key. The account key can be stored on another machine, or even on a smartcard. _______________________________________________________________________ lacme is Copyright © 2015-2021 Guilhem Moulin ⟨guilhem@fripost.org⟩, and licensed for use under the GNU General Public License version 3 or later. See ‘COPYING’ for specific terms and distribution information. lacme-0.8.3/certs-staging/000077500000000000000000000000001463261126600153645ustar00rootroot00000000000000lacme-0.8.3/certs-staging/letsencrypt-stg-root-x1.pem000066400000000000000000000037201463261126600225470ustar00rootroot00000000000000-----BEGIN CERTIFICATE----- MIIFmDCCA4CgAwIBAgIQU9C87nMpOIFKYpfvOHFHFDANBgkqhkiG9w0BAQsFADBm MQswCQYDVQQGEwJVUzEzMDEGA1UEChMqKFNUQUdJTkcpIEludGVybmV0IFNlY3Vy aXR5IFJlc2VhcmNoIEdyb3VwMSIwIAYDVQQDExkoU1RBR0lORykgUHJldGVuZCBQ ZWFyIFgxMB4XDTE1MDYwNDExMDQzOFoXDTM1MDYwNDExMDQzOFowZjELMAkGA1UE BhMCVVMxMzAxBgNVBAoTKihTVEFHSU5HKSBJbnRlcm5ldCBTZWN1cml0eSBSZXNl YXJjaCBHcm91cDEiMCAGA1UEAxMZKFNUQUdJTkcpIFByZXRlbmQgUGVhciBYMTCC AiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBALbagEdDTa1QgGBWSYkyMhsc ZXENOBaVRTMX1hceJENgsL0Ma49D3MilI4KS38mtkmdF6cPWnL++fgehT0FbRHZg jOEr8UAN4jH6omjrbTD++VZneTsMVaGamQmDdFl5g1gYaigkkmx8OiCO68a4QXg4 wSyn6iDipKP8utsE+x1E28SA75HOYqpdrk4HGxuULvlr03wZGTIf/oRt2/c+dYmD oaJhge+GOrLAEQByO7+8+vzOwpNAPEx6LW+crEEZ7eBXih6VP19sTGy3yfqK5tPt TdXXCOQMKAp+gCj/VByhmIr+0iNDC540gtvV303WpcbwnkkLYC0Ft2cYUyHtkstO fRcRO+K2cZozoSwVPyB8/J9RpcRK3jgnX9lujfwA/pAbP0J2UPQFxmWFRQnFjaq6 rkqbNEBgLy+kFL1NEsRbvFbKrRi5bYy2lNms2NJPZvdNQbT/2dBZKmJqxHkxCuOQ FjhJQNeO+Njm1Z1iATS/3rts2yZlqXKsxQUzN6vNbD8KnXRMEeOXUYvbV4lqfCf8 mS14WEbSiMy87GB5S9ucSV1XUrlTG5UGcMSZOBcEUpisRPEmQWUOTWIoDQ5FOia/ GI+Ki523r2ruEmbmG37EBSBXdxIdndqrjy+QVAmCebyDx9eVEGOIpn26bW5LKeru mJxa/CFBaKi4bRvmdJRLAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNVHRMB Af8EBTADAQH/MB0GA1UdDgQWBBS182Xy/rAKkh/7PH3zRKCsYyXDFDANBgkqhkiG 9w0BAQsFAAOCAgEAncDZNytDbrrVe68UT6py1lfF2h6Tm2p8ro42i87WWyP2LK8Y nLHC0hvNfWeWmjZQYBQfGC5c7aQRezak+tHLdmrNKHkn5kn+9E9LCjCaEsyIIn2j qdHlAkepu/C3KnNtVx5tW07e5bvIjJScwkCDbP3akWQixPpRFAsnP+ULx7k0aO1x qAeaAhQ2rgo1F58hcflgqKTXnpPM02intVfiVVkX5GXpJjK5EoQtLceyGOrkxlM/ sTPq4UrnypmsqSagWV3HcUlYtDinc+nukFk6eR4XkzXBbwKajl0YjztfrCIHOn5Q CJL6TERVDbM/aAPly8kJ1sWGLuvvWYzMYgLzDul//rUF10gEMWaXVZV51KpS9DY/ 5CunuvCXmEQJHo7kGcViT7sETn6Jz9KOhvYcXkJ7po6d93A/jy4GKPIPnsKKNEmR xUuXY4xRdh45tMJnLTUDdC9FIU0flTeO9/vNpVA8OPU1i14vCz+MU8KX1bV3GXm/ fxlB7VBBjX9v5oUep0o/j68R/iDlCOM4VVfRa8gX6T2FU7fNdatvGro7uQzIvWof gN9WUwCbEMBy/YhBSrXycKA8crgGg3x1mIsopn88JKwmMBa68oS7EHM9w7C4y71M 7DiA+/9Qdp9RBWJpTS9i/mDnJg1xvo8Xz49mrrgfmcAXTCJqXi24NatI3Oc= -----END CERTIFICATE----- lacme-0.8.3/certs-staging/letsencrypt-stg-root-x2.pem000066400000000000000000000015331463261126600225500ustar00rootroot00000000000000-----BEGIN CERTIFICATE----- MIICTjCCAdSgAwIBAgIRAIPgc3k5LlLVLtUUvs4K/QcwCgYIKoZIzj0EAwMwaDEL MAkGA1UEBhMCVVMxMzAxBgNVBAoTKihTVEFHSU5HKSBJbnRlcm5ldCBTZWN1cml0 eSBSZXNlYXJjaCBHcm91cDEkMCIGA1UEAxMbKFNUQUdJTkcpIEJvZ3VzIEJyb2Nj b2xpIFgyMB4XDTIwMDkwNDAwMDAwMFoXDTQwMDkxNzE2MDAwMFowaDELMAkGA1UE BhMCVVMxMzAxBgNVBAoTKihTVEFHSU5HKSBJbnRlcm5ldCBTZWN1cml0eSBSZXNl YXJjaCBHcm91cDEkMCIGA1UEAxMbKFNUQUdJTkcpIEJvZ3VzIEJyb2Njb2xpIFgy MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEOvS+w1kCzAxYOJbA06Aw0HFP2tLBLKPo FQqR9AMskl1nC2975eQqycR+ACvYelA8rfwFXObMHYXJ23XLB+dAjPJVOJ2OcsjT VqO4dcDWu+rQ2VILdnJRYypnV1MMThVxo0IwQDAOBgNVHQ8BAf8EBAMCAQYwDwYD VR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQU3tGjWWQOwZo2o0busBB2766XlWYwCgYI KoZIzj0EAwMDaAAwZQIwRcp4ZKBsq9XkUuN8wfX+GEbY1N5nmCRc8e80kUkuAefo uc2j3cICeXo1cOybQ1iWAjEA3Ooawl8eQyR4wrjCofUE8h44p0j7Yl/kBlJZT8+9 vbtH7QiVzeKCOTQPINyRql6P -----END CERTIFICATE----- lacme-0.8.3/certs/000077500000000000000000000000001463261126600137325ustar00rootroot00000000000000lacme-0.8.3/certs/isrg-root-x2.pem000066400000000000000000000014261463261126600167140ustar00rootroot00000000000000-----BEGIN CERTIFICATE----- MIICGzCCAaGgAwIBAgIQQdKd0XLq7qeAwSxs6S+HUjAKBggqhkjOPQQDAzBPMQsw CQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJuZXQgU2VjdXJpdHkgUmVzZWFyY2gg R3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBYMjAeFw0yMDA5MDQwMDAwMDBaFw00 MDA5MTcxNjAwMDBaME8xCzAJBgNVBAYTAlVTMSkwJwYDVQQKEyBJbnRlcm5ldCBT ZWN1cml0eSBSZXNlYXJjaCBHcm91cDEVMBMGA1UEAxMMSVNSRyBSb290IFgyMHYw EAYHKoZIzj0CAQYFK4EEACIDYgAEzZvVn4CDCuwJSvMWSj5cz3es3mcFDR0HttwW +1qLFNvicWDEukWVEYmO6gbf9yoWHKS5xcUy4APgHoIYOIvXRdgKam7mAHf7AlF9 ItgKbppbd9/w+kHsOdx1ymgHDB/qo0IwQDAOBgNVHQ8BAf8EBAMCAQYwDwYDVR0T AQH/BAUwAwEB/zAdBgNVHQ4EFgQUfEKWrt5LSDv6kviejM9ti6lyN5UwCgYIKoZI zj0EAwMDaAAwZQIwe3lORlCEwkSHRhtFcP9Ymd70/aTSVaYgLXTWNLxBo1BfASdW tL4ndQavEi51mI38AjEAi/V3bNTIZargCyzuFJ0nN6T5U6VR5CmD1/iQMVtCnwr1 /q4AaOeMSQ+2b1tbFfLn -----END CERTIFICATE----- lacme-0.8.3/certs/isrgrootx1.pem000066400000000000000000000036231463261126600165620ustar00rootroot00000000000000-----BEGIN CERTIFICATE----- MIIFazCCA1OgAwIBAgIRAIIQz7DSQONZRGPgu2OCiwAwDQYJKoZIhvcNAQELBQAw TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMTUwNjA0MTEwNDM4 WhcNMzUwNjA0MTEwNDM4WjBPMQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJu ZXQgU2VjdXJpdHkgUmVzZWFyY2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBY MTCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAK3oJHP0FDfzm54rVygc h77ct984kIxuPOZXoHj3dcKi/vVqbvYATyjb3miGbESTtrFj/RQSa78f0uoxmyF+ 0TM8ukj13Xnfs7j/EvEhmkvBioZxaUpmZmyPfjxwv60pIgbz5MDmgK7iS4+3mX6U A5/TR5d8mUgjU+g4rk8Kb4Mu0UlXjIB0ttov0DiNewNwIRt18jA8+o+u3dpjq+sW T8KOEUt+zwvo/7V3LvSye0rgTBIlDHCNAymg4VMk7BPZ7hm/ELNKjD+Jo2FR3qyH B5T0Y3HsLuJvW5iB4YlcNHlsdu87kGJ55tukmi8mxdAQ4Q7e2RCOFvu396j3x+UC B5iPNgiV5+I3lg02dZ77DnKxHZu8A/lJBdiB3QW0KtZB6awBdpUKD9jf1b0SHzUv KBds0pjBqAlkd25HN7rOrFleaJ1/ctaJxQZBKT5ZPt0m9STJEadao0xAH0ahmbWn OlFuhjuefXKnEgV4We0+UXgVCwOPjdAvBbI+e0ocS3MFEvzG6uBQE3xDk3SzynTn jh8BCNAw1FtxNrQHusEwMFxIt4I7mKZ9YIqioymCzLq9gwQbooMDQaHWBfEbwrbw qHyGO0aoSCqI3Haadr8faqU9GY/rOPNk3sgrDQoo//fb4hVC1CLQJ13hef4Y53CI rU7m2Ys6xt0nUW7/vGT1M0NPAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAPBgNV HRMBAf8EBTADAQH/MB0GA1UdDgQWBBR5tFnme7bl5AFzgAiIyBpY9umbbjANBgkq hkiG9w0BAQsFAAOCAgEAVR9YqbyyqFDQDLHYGmkgJykIrGF1XIpu+ILlaS/V9lZL ubhzEFnTIZd+50xx+7LSYK05qAvqFyFWhfFQDlnrzuBZ6brJFe+GnY+EgPbk6ZGQ 3BebYhtF8GaV0nxvwuo77x/Py9auJ/GpsMiu/X1+mvoiBOv/2X/qkSsisRcOj/KK NFtY2PwByVS5uCbMiogziUwthDyC3+6WVwW6LLv3xLfHTjuCvjHIInNzktHCgKQ5 ORAzI4JMPJ+GslWYHb4phowim57iaztXOoJwTdwJx4nLCgdNbOhdjsnvzqvHu7Ur TkXWStAmzOVyyghqpZXjFaH3pO3JLF+l+/+sKAIuvtd7u+Nxe5AW0wdeRlN8NwdC jNPElpzVmbUq4JUagEiuTDkHzsxHpFKVK7q4+63SM1N95R1NbdWhscdCb+ZAJzVc oyi3B43njTOQ5yOf+1CceWxG1bQVs5ZufpsMljq4Ui0/1lvh+wjChP4kqKOJ2qxq 4RgqsahDYVvTH9w7jXbyLeiNdd8XM2w9U/t7y0Ff/9yi0GE44Za4rF2LN9d11TPA mRGunUHBcnWEvgJBQl9nJEiU0Zsnvgc/ubhPgXRR4Xq37Z0j4r7g1SgEEzwxA57d emyPxgcYxn/eR44/KJ4EBs+lVDR3veyJm+kXQ99b21/+jh5Xos1AnX5iItreGCc= -----END CERTIFICATE----- lacme-0.8.3/client000077500000000000000000000374361463261126600140330ustar00rootroot00000000000000#!/usr/bin/perl -T #---------------------------------------------------------------------- # ACME client written with process isolation and minimal privileges in mind # Copyright © 2015-2021 Guilhem Moulin # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . #---------------------------------------------------------------------- use v5.14.2; use strict; use warnings; # Usage: client COMMAND CONFIG_FD SOCKET_FD [ARGUMENTS] # # fdopen(3) the file descriptor SOCKET_FD (corresponding to the # listening lacme-accountd socket), connect(2) to it to retrieve the # account key's public parameters and later send data to be signed by # the master component (using the account key). # # CONFIG_FD is a read-only file descriptor associated with the # configuration file at pos 0. (This is needed since this process # doesn't know its name and might not have read access to it.) # # NOTE: one needs to chdir(2) to an appropriate ACME challenge directory # before running this program, since challenge tokens are (on purpose) # only written to the current directory. If COMMAND is challenge-less, # one should chdir(2) to the root directory "/" instead. # # NOTE: one should run this program as an unprivileged user:group such # as "nobody:nogroup"; bind(2)'ing to a restricted UNIX socket (for # instance own by another user and created with umask 0177) is not a # problem since SOCKET_FD can be bound as root prior to the execve(2). our $VERSION = '0.8.3'; my $PROTOCOL_VERSION = 1; my $NAME = 'lacme-client'; use Errno 'EEXIST'; use Fcntl qw/O_CREAT O_EXCL O_WRONLY/; use Digest::SHA 'sha256'; use MIME::Base64 qw/encode_base64 encode_base64url/; use Date::Parse (); use LWP::UserAgent (); use JSON (); # Clean up PATH $ENV{PATH} = join ':', qw{/usr/bin /bin}; delete @ENV{qw/IFS CDPATH ENV BASH_ENV/}; my $COMMAND = shift @ARGV // die; # Untaint and fdopen(3) the configuration file and listening socket (shift @ARGV // die) =~ /\A(\d+)\z/ or die; open (my $CONFFILE, '<&=', $1+0) or die "fdopen $1: $!"; (shift @ARGV // die) =~ /\A(\d+)\z/ or die; open (my $S, '+<&=', $1+0) or die "fdopen $1: $!"; # JSON keys need to be sorted lexicographically (for instance in the thumbprint) sub json() { JSON::->new->utf8->canonical(); } ############################################################################# # Read the protocol version and JSON Web Key (RFC 7517) from the # lacme-accountd socket # my ($JWK, $JWK_thumbprint, $ALG, $KID); do { my $greeting = $S->getline(); die "Error: Invalid client version\n" unless defined $greeting and $greeting =~ /\A(\d+) OK(?: (.*))?\r\n\z/ and $1 == $PROTOCOL_VERSION; if (defined (my $extra = $2)) { my $h = eval { JSON::->new->decode($extra) }; if ($@ or !defined $h) { print STDERR "Warning: Ignoring extra greeting data from accountd \"$extra\"\n"; } else { print STDERR "Received extra greeting data from accountd: $extra\n" if $ENV{DEBUG}; ($JWK_thumbprint, $ALG, $KID) = @$h{qw/jwk-thumbprint alg kid/}; } } my $jwk_str = $S->getline() // die "Error: No JWK from lacme-accountd\n"; $JWK = JSON::->new->decode($jwk_str); $JWK_thumbprint //= encode_base64url(sha256(json()->encode($JWK))); # SHA-256 is hardcoded, see RFC 8555 sec. 8.1 $ALG //= "RS256"; }; ############################################################################# # Parse configuration (already validated by the master) and create the # LWP::UserAgent object # my $CONFIG = do { my $conf = do { local $/ = undef; <$CONFFILE> }; JSON::->new->decode($conf); }; my $UA = do { my %args = %$CONFIG; my $verify = lc (delete $args{SSL_verify} // 'Yes') eq 'no' ? 0 : 1; my %ssl_opts = ( verify_hostname => $verify ); $ssl_opts{$_} = $args{$_} foreach grep /^SSL_/, keys %args; LWP::UserAgent::->new( agent => "$NAME/$VERSION", ssl_opts => \%ssl_opts ); } // die "Can't create LWP::UserAgent object"; $UA->default_header( 'Accept-Language' => 'en' ); my $NONCE; ############################################################################# # Send an HTTP request to the ACME server. If $json is defined, send # its encoding as the request content, with "application/jose+json" as # Content-Type. # sub request($$;$) { my ($method, $uri, $json) = @_; print STDERR "[$$] >>> $method $uri <<<\n" if $ENV{DEBUG}; my $req = HTTP::Request::->new($method => $uri) or die "Can't $method $uri"; if (defined $json) { $req->content_type('application/jose+json'); $req->content(json()->encode($json)); } my $r = $UA->request($req) or die "Can't $method $uri"; $NONCE //= $r->header('Replay-Nonce'); # undef $NONCE if the header is missing print STDERR "[$$] >>> ", $r->status_line, "\n", $r->headers->as_string("\n") if $ENV{DEBUG}; return $r; } # The request's Status Line; if the Content-Type is # application/problem+json (RFC 7807), parse the decoded content as JSON # and add the value of the 'detail' field to the Status Line. sub request_status_line($) { my $r = shift; my $msg = $r->status_line; if (!$r->is_success() and $r->content_type() eq 'application/problem+json') { my $content = json()->decode($r->decoded_content()); print STDERR json()->pretty->encode($content), "\n" if $ENV{DEBUG}; $msg .= " (".$content->{detail}.")" if defined $content->{detail}; } return $msg; } # The request's Retry-After header (RFC 7231 sec. 7.1.3), converted to # waiting time in seconds. sub request_retry_after($) { my $r = shift; my $v = $r->header('Retry-After'); if (defined $v and $v !~ /\A\d+\z/) { $v = Date::Parse::str2time($v); if (defined $v) { $v = $v - time; undef $v if $v <= 0; } } return $v; } # Parse and return the request's decoded content as JSON; or print the # Status Line and fail if the request failed. # If $dump is set, also pretty-print the decoded content. sub request_json_decode($;$$) { my $r = shift; my $dump = shift || $ENV{DEBUG}; my $fh = shift // \*STDERR; die request_status_line($r), "\n" unless $r->is_success(); my $content = $r->decoded_content(); die "Content-Type: ".$r->content_type()." is not application/json\n" unless $r->content_type() eq 'application/json'; my $json = json()->decode($content); print $fh (-t $fh ? (json()->pretty->encode($json)."\n") : $content) if $dump; return $json; } ############################################################################# # JSON-encode the hash reference $payload and send it to the ACME server # $url encapsulated it in a JSON Web Signature (JWS). $header MUST # contain either "jwk" (JSON Web Key) or "kid" per RFC 8555 sec. 6.2 # https://tools.ietf.org/html/rfc8555 # sub acme2($$;$) { my ($url, $header, $payload) = @_; # Produce the JSON Web Signature: RFC 7515 section 5 $header->{alg} = $ALG; $header->{nonce} = $NONCE // die "Missing nonce\n"; $header->{url} = $url; my $protected = encode_base64url(json()->encode($header)); $payload = defined $payload ? encode_base64url(json()->encode($payload)) : ""; $S->printflush($protected, ".", $payload, "\r\n"); my $sig = $S->getline() // die "Error: lost connection with lacme-accountd\n"; $sig =~ s/\r\n\z// or die; undef $NONCE; # consume the nonce # Flattened JSON Serialization, RFC 7515 section 7.2.2 request(POST => $url, { payload => $payload, protected => $protected, signature => $sig }); } # Like above, but always use "kid" sub acme($;$) { my ($url, $payload) = @_; die "Missing KID\n" unless defined $KID; acme2($url, {kid => $KID}, $payload) } my $SERVER_URI = $CONFIG->{server} // '@@acmeapi_server@@'; my %RES; # Get the resource URI from the directory sub acme_resource($%) { my $r = shift; my %payload = @_; my %protected; unless (%RES) { # query the ACME directory to get resources URIs %RES = %{ request_json_decode(request(GET => $SERVER_URI)) }; # send a HEAD request to the newNonce resource to get a fresh nonce die "Unknown resource 'newNonce'\n" unless defined $RES{newNonce}; request(HEAD => $RES{newNonce}); } my $uri = $RES{$r} // die "Unknown resource '$r'\n"; if ($r eq "newAccount" or ($r eq "revokeCert" and !defined $KID)) { # per RFC 8555 sec. 6.2 these requests MUST have a JWK print STDERR "Warning: lacme-accountd supplied an empty JWK; try removing 'keyid' ", "setting from lacme-accountd.conf if the ACME resource request fails.\n" unless %$JWK; return acme2($uri, {jwk => $JWK}, \%payload); } else { # per RFC 8555 sec. 6.2 all other requests MUST have a KID return acme($uri, \%payload); } } # Set the key ID (registration URI) sub set_kid(;$) { my $die = shift // 1; return if defined $KID; # already set my $r = acme_resource('newAccount', onlyReturnExisting => JSON::true ); if ($r->is_success()) { $KID = $r->header('Location'); } elsif ($die) { die request_status_line($r), "\n"; } } ############################################################################# # account FLAGS [CONTACT ..] # if ($COMMAND eq 'account') { my $flags = shift @ARGV; my %h = ( contact => \@ARGV ) if @ARGV; $h{onlyReturnExisting} = JSON::true unless $flags & 0x01; $h{termsOfServiceAgreed} = JSON::true if $flags & 0x02; $h{status} = "deactivated" if $flags & 0x04; print STDERR "Requesting new registration ".(@ARGV ? ("for ".join(', ', @ARGV)) : "")."\n" if $flags & 0x01; my $r = acme_resource('newAccount', %h); # TODO: list account orders: https://github.com/letsencrypt/boulder/issues/3335 print STDERR "Terms of Service: $RES{meta}->{termsOfService}\n" if defined $RES{meta} and defined $RES{meta}->{termsOfService}; if ($r->is_success()) { $KID = $r->header('Location'); print STDERR "Key ID: $KID\n"; $r = acme($KID, \%h); request_json_decode($r, 1, \*STDOUT) if $r->is_success() and $r->content_type() eq 'application/json'; } print STDERR request_status_line($r), "\n" if !$r->is_success() or $ENV{DEBUG}; exit ($r->is_success() ? 0 : 1); } ############################################################################# # newOrder AUTHZ [AUTHZ ..] # Read the CSR (in DER format) from STDIN, print the cert (in PEM format # to STDOUT) # elsif ($COMMAND eq 'newOrder') { die unless @ARGV; my $timeout = $CONFIG->{timeout} // 30; my $csr = do { local $/ = undef; }; set_kid(); my @identifiers = map {{ type => 'dns', value => $_ }} @ARGV; my $r = acme_resource('newOrder', identifiers => \@identifiers); my $order = request_json_decode($r); my $orderurl = $r->header('Location'); foreach (@{$order->{authorizations}}) { my $authz = request_json_decode(acme($_)); next unless $authz->{status} eq 'pending'; my $identifier = $authz->{identifier}->{value}; my ($challenge) = grep {$_->{type} eq 'http-01'} @{$authz->{challenges} // []}; die "Missing 'http-01' challenge in server response for '$identifier'\n" unless defined $challenge; die "Invalid challenge token ".($challenge->{token} // '')."\n" # ensure we don't write outside the cwd unless ($challenge->{token} // '') =~ /\A[A-Za-z0-9_\-]+\z/; my $keyAuthorization = $challenge->{token}.'.'.$JWK_thumbprint; # serve $keyAuthorization at http://$domain/.well-known/acme-challenge/$challenge->{token} if (sysopen(my $fh, $challenge->{token}, O_CREAT|O_EXCL|O_WRONLY)) { # note: the file is created mode 0666 minus umask restrictions $fh->print($keyAuthorization); $fh->close() or die "close: $!"; } elsif ($! == EEXIST) { print STDERR "Warning: File exists: $challenge->{token}\n"; } else { die "open($challenge->{token}): $!"; } my $r = acme($challenge->{url}, {}); request_json_decode($r); } # poll the order URL (to get the status of all challenges at once) # until the status become 'valid'; see RFC 8555 sec. 7.1.6 for the # the status change flow my $orderstr = join(', ', map {uc($_->{type}) .":". $_->{value}} @identifiers); my $certuri; for (my $i = 0, my $url = $orderurl, my $payload;;) { my $r = acme($url => $payload); my $resp = request_json_decode($r); if (defined (my $problem = $resp->{error})) { # problem document (RFC 7807) my $msg = $problem->{status}; $msg .= " " .$problem->{title} if defined $problem->{title}; $msg .= " (".$problem->{detail}.")" if defined $problem->{detail}; die $msg, "\n"; } my $status = $resp->{status}; if (!defined $status or $status eq "invalid") { die "Error: Invalid order $orderstr\n"; } elsif ($status eq "pending") { # keep retrying } elsif ($status eq "ready") { $url = $order->{finalize}; $payload = {csr => encode_base64url($csr)}; # retry after moving to "processing" or "valid" state next; } elsif ($status eq "processing") { $url = $orderurl; undef $payload; } elsif ($status eq "valid") { $certuri = $resp->{certificate} // die "Error: Missing \"certificate\" field in \"valid\" order\n"; last; } else { warn "Unknown order status: $status\n"; } my $retry_after = request_retry_after($r) // 1; print STDERR "Retrying after $retry_after seconds...\n"; $i += $retry_after; die "Timeout exceeded while waiting for challenges to pass ($orderstr)\n" if $timeout > 0 and $i >= $timeout; sleep $retry_after; } # poll until the cert is available print STDERR "Certificate URI: $certuri\n"; for (my $i = 0;;) { $r = acme($certuri); die request_status_line($r), "\n" unless $r->is_success(); last unless $r->code == 202; # Accepted my $retry_after = request_retry_after($r) // 1; print STDERR "Retrying after $retry_after seconds...\n"; $i += $retry_after; die "Timeout exceeded while waiting for certificate\n" if $timeout > 0 and $i >= $timeout; sleep $retry_after; } print $r->decoded_content(); } ############################################################################# # revokeCert # The certificate to revoke is passed (in DER format) to STDIN; this # is needed since the ACME client might not have read access to the # X.509 file # elsif ($COMMAND eq 'revokeCert') { die if @ARGV; my $der = do { local $/ = undef; }; close STDIN or die "close: $!"; # RFC 8555 sec. 6.2: send a KID if the request is signed with the # acccount key, otherwise send a JWK # We have no way to know which of the account key or certificate key # is used, so we try to get a KID and fallback to sending the JWK set_kid(0); my $r = acme_resource('revokeCert', certificate => encode_base64url($der)); exit 0 if $r->is_success(); die request_status_line($r), "\n"; } lacme-0.8.3/config/000077500000000000000000000000001463261126600140575ustar00rootroot00000000000000lacme-0.8.3/config/lacme-accountd.conf000066400000000000000000000021141463261126600176030ustar00rootroot00000000000000# The value of "privkey" specifies the (private) account key to use # for signing requests. Currently supported values are: # # - file:FILE, for a private key in PEM format (optionally encrypted) # - gpg:FILE, for a gpg-encrypted private key # #privkey = file:/path/to/account.key #privkey = gpg:/path/to/encrypted/account.key.gpg # For a gpg-encrypted private account key, "gpg" specifies the binary # gpg(1) to use, as well as some default options. Default: "gpg # --quiet". # #gpg = gpg --quiet --no-auto-check-trustdb # The value of "socket" specifies the UNIX-domain socket to bind against # for signature requests from the ACME client. An error is raised if # the path exists or if its parent directory is writable by other # users. # #socket = %t/S.lacme # An optional file where to log to. # #logfile = # The "Key ID", as shown by `acme account`, to give the ACME client. # A non-empty value revokes all account management access (status # change, contact address updates etc.) from the client. # #keyid = # Be quiet. Possible values: "Yes"/"No". # #quiet = Yes ; vim:ft=dosini lacme-0.8.3/config/lacme-certs.conf000066400000000000000000000037741463261126600171400ustar00rootroot00000000000000# Each non-default section refer to separate certificate issuance # requests. Settings in the default section apply to each sections. # Message digest to sign the Certificate Signing Request with, # overriding the req(1ssl) default. # #hash = # Comma-separated list of Key Usages, for instance "digitalSignature, # keyEncipherment", to include in the Certificate Signing Request. # See x509v3_config(5ssl) for a list of possible values. Note that the # ACME might override the value provided here. # #keyUsage = # Path to the bundle of trusted issuer certificates. This is used for # validating each certificate after issuance or renewal. Specifying an # empty value skips certificate validation. # #CAfile = @@datadir@@/lacme/ca-certificates.crt # For an existing certificate, the minimum number of days before its # expiration date the section is considered for re-issuance. # #min-days = 21 #[www] # Path the service's private key. This setting is required. # #certificate-key = /etc/nginx/ssl/srv.key # Where to store the issued certificate (in PEM format). # #certificate = /etc/nginx/ssl/srv.crt # Where to store the issued certificate along with its chain of trust # (in PEM format). # #certificate-chain = /etc/nginx/ssl/srv.chain.crt # Subject field of the Certificate Signing Request. This setting is # required. # #subject = /CN=example.org # Comma-separated list of Subject Alternative Names. # #subjectAltName = DNS:example.org,DNS:www.example.org # username[:groupname] to chown the issued certificate and # certificate-chain with. # #owner = root:root # Octal mode to chmod the issued certificate and certificate-chain with. # #mode = 0644 # Command to pass the the system's command shell ("/bin/sh -c") after # successful installation of the certificate and/or certificate-chain. # #notify = /bin/systemctl reload nginx #[smtp] #certificate-key = /etc/postfix/ssl/srv.key #certificate-chain = /etc/postfix/ssl/srv.crt #subject = /CN=smtp.example.org #notify = /bin/systemctl reload postfix ; vim:ft=dosini lacme-0.8.3/config/lacme.conf000066400000000000000000000071061463261126600160130ustar00rootroot00000000000000# For certificate issuance (newOrder command), specify a space-separated # certificate configuration files or directories to use # #config-certs = lacme-certs.conf lacme-certs.conf.d/ [client] # The value of "socket" specifies the path to the lacme-accountd(1) # UNIX-domain socket to connect to for signature requests from the ACME # client. lacme(8) aborts if the socket is readable or writable by # other users, or if its parent directory is writable by other users. # This setting is ignored when lacme-accountd(1) is spawned by lacme(8), # since the two processes communicate through a socket pair. See the # "accountd" section below for details. # #socket = %t/S.lacme # username to drop privileges to (setting both effective and real uid). # Skip privilege drop if the value is empty (not recommended). # #user = @@lacme_client_user@@ # groupname to drop privileges to (setting both effective and real gid, # and also setting the list of supplementary gids to that single group). # Skip privilege drop if the value is empty (not recommended). # #group = @@lacme_client_group@@ # ACME client command. # #command = @@libexecdir@@/lacme/client # URI of the ACME server's directory. NOTE: Use the staging server # for testing # as it has relaxed rate-limiting. # #server = @@acmeapi_server@@ # Timeout in seconds after which the client stops polling the ACME # server and considers the request failed. # #timeout = 30 # Whether to verify the server certificate chain. # #SSL_verify = yes # Specify the version of the SSL protocol used to transmit data. # #SSL_version = SSLv23:!TLSv1_1:!TLSv1:!SSLv3:!SSLv2 # Specify the cipher list for the connection. # #SSL_cipher_list = EECDH+AESGCM:!MEDIUM:!LOW:!EXP:!aNULL:!eNULL [webserver] # Comma- or space-separated list of addresses to listen on, for instance # "0.0.0.0:80 [::]:80". # #listen = @@runstatedir@@/lacme-www.socket # Directory under which an external HTTP daemon is configured to serve # GET requests for challenge files under "/.well-known/acme-challenge/" # (for each virtual host requiring authorization) as static files. # NOTE: the directory must exist and be writable by the lacme client # user. # #challenge-directory = # username to drop privileges to (setting both effective and real uid). # Skip privilege drop if the value is empty (not recommended). # #user = @@lacme_www_user@@ # groupname to drop privileges to (setting both effective and real gid, # and also setting the list of supplementary gids to that single group). # Skip privilege drop if the value is empty (not recommended). # #group = @@lacme_www_group@@ # ACME webserver command. # #command = @@libexecdir@@/lacme/webserver # Whether to automatically install iptables(8) rules to open the # ADDRESS[:PORT] specified with listen. Theses rules are automatically # removed once lacme(8) exits. # #iptables = No [accountd] # lacme-accound(1) section. Comment out this section (including its # header), or use the --socket= CLI option, to make lacme(8) connect to # an existing lacme-accountd(1) process via a UNIX-domain socket. # username to drop privileges to (setting both effective and real uid). # Skip privilege drop if the value is empty. # #user = # groupname to drop privileges to (setting both effective and real gid, # and also setting the list of supplementary gids to that single group). # Skip privilege drop if the value is empty. # #group = # lacme-accountd(1) command. # #command = @@bindir@@/lacme-accountd # Path to the lacme-accountd(1) configuration file. # #config = # Be quiet. # #quiet = Yes ; vim:ft=dosini lacme-0.8.3/lacme000077500000000000000000001133411463261126600136240ustar00rootroot00000000000000#!/usr/bin/perl -T #---------------------------------------------------------------------- # ACME client written with process isolation and minimal privileges in mind # Copyright © 2015-2021 Guilhem Moulin # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . #---------------------------------------------------------------------- use v5.14.2; use strict; use warnings; our $VERSION = '0.8.3'; my $NAME = 'lacme'; use Errno 'EINTR'; use Fcntl qw/F_GETFD F_SETFD FD_CLOEXEC O_CREAT O_EXCL O_WRONLY SEEK_SET/; use File::Basename 'dirname'; use File::Temp (); use Getopt::Long qw/:config posix_default no_ignore_case gnu_getopt auto_version/; use POSIX (); use Socket 1.95 qw/AF_UNIX AF_INET AF_INET6 PF_UNIX PF_INET PF_INET6 PF_UNSPEC INADDR_ANY IN6ADDR_ANY IPPROTO_IPV6 SOCK_STREAM SOL_SOCKET SO_REUSEADDR SHUT_RDWR/; use Config::Tiny (); use Date::Parse (); use JSON (); use Net::SSLeay 1.46 (); # Clean up PATH $ENV{PATH} = join ':', qw{/usr/bin /bin}; delete @ENV{qw/IFS CDPATH ENV BASH_ENV/}; my ($COMMAND, %OPTS, $CONFIG, @CLEANUP); $SIG{$_} = sub() { exit 1 } foreach qw/INT TERM/; # run the END block upon SIGINT/SIGTERM ############################################################################# # Parse and validate configuration # sub usage(;$$) { my $rv = shift // 0; if ($rv) { my $msg = shift; print STDERR $msg."\n" if defined $msg; print STDERR "Try '$NAME --help' or consult the manpage for more information.\n"; } else { print STDERR "Usage: $NAME [--config=FILE] [--socket=PATH] [OPTIONS] COMMAND [ARGUMENT ..]\n" ."Consult the manpage for more information.\n"; } exit $rv; } usage(1) unless GetOptions(\%OPTS, qw/config=s config-certs=s@ socket=s register tos-agreed deactivate min-days=i force quiet|q debug help|h/); usage(0) if $OPTS{help}; $COMMAND = shift(@ARGV) // usage(1, "Missing command"); $COMMAND = $COMMAND =~ /\A(account|newOrder|new-cert|revokeCert|revoke-cert)\z/ ? $1 : usage(1, "Invalid command: $COMMAND"); # validate and untaint $COMMAND @ARGV = map { /\A(\p{Print}*)\z/ ? $1 : die } @ARGV; # untaint @ARGV sub env_fallback($$) { my $v = $ENV{ shift() }; return (defined $v and $v ne "") ? $v : shift; } sub spec_expand($) { my $str = shift; $str =~ s#%(.)# my $x = $1 eq "C" ? ($< == 0 ? "@@localstatedir@@/cache" : env_fallback(XDG_CACHE_HOME => "$ENV{HOME}/.cache")) : $1 eq "E" ? ($< == 0 ? "@@sysconfdir@@" : env_fallback(XDG_CONFIG_HOME => "$ENV{HOME}/.config")) : $1 eq "g" ? (getgrgid((split /\s/,$()[0]))[0] : $1 eq "G" ? $( =~ s/\s.*//r : $1 eq "h" ? (getpwuid($<))[7] : $1 eq "u" ? (getpwuid($<))[0] : $1 eq "U" ? $< : $1 eq "t" ? ($< == 0 ? "@@runstatedir@@" : $ENV{XDG_RUNTIME_DIR}) : $1 eq "T" ? env_fallback(TMPDIR => "/tmp") : $1 eq "%" ? "%" : die "Error: \"$str\" has unknown specifier %$1\n"; die "Error: Undefined expansion %$1 in \"$str\"\n" unless defined $x; $x; #ge; return $str; } my $CONFFILENAME = spec_expand($OPTS{config} // "%E/lacme/$NAME.conf"); do { print STDERR "Using configuration file: $CONFFILENAME\n" if $OPTS{debug}; open my $fh, '<', $CONFFILENAME or die "Can't open $CONFFILENAME: $!\n"; my $conf = do { local $/ = undef; <$fh> }; close $fh or die "close: $!"; my $h = Config::Tiny::->read_string($conf) or die Config::Tiny::->errstr()."\n"; my $defaults = delete $h->{_} // {}; my $accountd = defined $OPTS{socket} ? 0 : exists $h->{accountd} ? 1 : 0; my %valid = ( client => { socket => '%t/S.lacme', user => '@@lacme_client_user@@', group => '@@lacme_client_group@@', command => '@@libexecdir@@/lacme/client', # the rest is for the ACME client map {$_ => undef} qw/server timeout SSL_verify SSL_version SSL_cipher_list/ }, webserver => { listen => '@@runstatedir@@/lacme-www.socket', 'challenge-directory' => undef, user => '@@lacme_www_user@@', group => '@@lacme_www_group@@', command => '@@libexecdir@@/lacme/webserver', iptables => 'No' }, accountd => { user => '', group => '', command => '@@bindir@@/lacme-accountd', config => '', privkey => '', quiet => 'Yes', } ); foreach my $s (keys %valid) { my $h = delete $h->{$s} // {}; my %v = map { $_ => delete $h->{$_} // $valid{$s}->{$_} } keys %{$valid{$s}}; die "Unknown option(s) in [$s]: ".join(', ', keys %$h)."\n" if %$h; $h->{$_} //= $defaults->{$_} foreach keys %$defaults; $CONFIG->{$s} = \%v; } die "Invalid section(s): ".join(', ', keys %$h)."\n" if %$h; $CONFIG->{_} = $defaults; delete $CONFIG->{accountd} unless $accountd; $OPTS{quiet} = 0 if $OPTS{debug}; }; # Regular expressions for domain validation my $RE_LABEL = qr/[0-9a-z](?:[0-9a-z\x2D]{0,61}[0-9a-z])?/aai; my $RE_DOMAIN = qr/$RE_LABEL(?:\.$RE_LABEL)+/; ############################################################################# # Generate a Certificate Signing Request (in DER format) # sub gen_csr(%) { my %args = @_; return unless defined $args{'certificate-key'} and defined $args{subject}; return if defined $args{hash} and !grep { $args{hash} eq $_ } qw/md5 rmd160 sha1 sha224 sha256 sha384 sha512/; my $config = File::Temp::->new(SUFFIX => '.conf', TMPDIR => 1) // die; $config->print( "[ req ]\n", "distinguished_name = req_distinguished_name\n", "req_extensions = v3_req\n", "[ req_distinguished_name ]\n", "[ v3_req ]\n", "basicConstraints = critical, CA:FALSE\n", "subjectKeyIdentifier = hash\n" ); $config->print("keyUsage = critical, $args{keyUsage}\n") if defined $args{keyUsage}; $config->print("subjectAltName = $args{subjectAltName}\n") if defined $args{subjectAltName}; $config->print("tlsfeature = $args{tlsfeature}\n") if defined $args{tlsfeature}; $config->close() or die "close: $!"; my @args = (qw/-new -batch -key/, $args{'certificate-key'}); push @args, "-$args{hash}" if defined $args{hash}; push @args, '-subj', $args{subject}, '-config', $config->filename(), qw/-reqexts v3_req/; open my $fh, '-|', qw{openssl req -outform DER}, @args or die "fork: $!"; my $csr = do { local $/ = undef; <$fh> }; close $fh or $! ? die "close: $!" : return; if ($OPTS{debug}) { # print out the CSR in text form pipe my $rd, my $wd or die "pipe: $!"; my $pid = fork // die "fork: $!"; unless ($pid) { open STDIN, '<&', $rd or die "dup: $!"; open STDOUT, '>&', \*STDERR or die "dup: $!"; exec qw{openssl req -in /dev/stdin -inform DER -noout -text} or die; } $rd->close() or die "close: $!"; $wd->print($csr); $wd->close() or die "close: $!"; waitpid $pid => 0; die $? if $? > 0; } return $csr; } ############################################################################# # Get the timestamp of the given cert's expiration date. # Internally the expiration date is stored as a RFC3339 string (such as # yyyy-mm-ddThh:mm:ssZ); we convert it to a timestamp manually. # sub x509_enddate($) { my $filename = shift; my ($bio, $x509, $time, $dt); $bio = Net::SSLeay::BIO_new_file($filename, 'r'); $x509 = Net::SSLeay::PEM_read_bio_X509($bio) if defined $bio; $time = Net::SSLeay::X509_get_notAfter($x509) if defined $x509; $dt = Net::SSLeay::P_ASN1_TIME_get_isotime($time) if defined $time; my $t = Date::Parse::str2time($dt) if defined $dt; Net::SSLeay::X509_free($x509) if defined $x509; Net::SSLeay::BIO_free($bio) if defined $bio; return $t; } ############################################################################# # Drop privileges and chdir afterwards # sub drop_privileges($$$) { my ($user, $group, $dir) = @_; # set effective and real gid; also set the list of supplementary gids to that single gid if ($group ne '') { my $gid = getgrnam($group) // die "getgrnam($group)", ($! ? ": $!" : "\n"); $) = "$gid $gid"; die "setgroups: $!" if $@; POSIX::setgid($gid) or die "setgid: $!"; die "Couldn't setgid/setguid" unless $( eq "$gid $gid" and $) eq "$gid $gid"; # safety check } # set effective and real uid if ($user ne '') { my $uid = getpwnam($user) // die "getpwnam($user)", ($! ? ": $!" : "\n"); POSIX::setuid($uid) or die "setuid: $!"; die "Couldn't setuid/seteuid" unless $< == $uid and $> == $uid; # safety check } # sanitize environment my $term = $ENV{TERM}; my @ent = getpwuid($<) or die "getpwuid($<): $!"; %ENV = ( USER => $ent[0], LOGNAME => $ent[0], HOME => $ent[7], SHELL => $ent[8] ); $ENV{PATH} = $< == 0 ? "/usr/sbin:/usr/bin:/sbin:/bin" : "/usr/bin:/bin"; $ENV{TERM} = $term if defined $term; # preserve $TERM chdir $dir or die "chdir($dir): $!"; } ############################################################################# # Ensure the FD_CLOEXEC bit is $set on $fd # sub set_FD_CLOEXEC($$) { my ($fd, $set) = @_; my $flags = fcntl($fd, F_GETFD, 0) or die "fcntl F_GETFD: $!"; my $flags2 = $set ? ($flags | FD_CLOEXEC) : ($flags & ~FD_CLOEXEC); return if $flags == $flags2; fcntl($fd, F_SETFD, $flags2) or die "fcntl F_SETFD: $!"; } ############################################################################# # If 'listen' is not empty, bind socket(s) to the given addresse(s) and # spawn webserver(s) to serve ACME challenge reponses. # The temporary challenge directory is returned. # sub spawn_webserver() { my $conf = $CONFIG->{webserver}; # parse and pack addresses to listen to my @sockaddr; foreach my $a (split /[[:blank:],]\s*/, $conf->{listen}) { my $sockaddr; if ($a =~ /\A\//) { # absolute path to a unix domain socket $sockaddr = Socket::pack_sockaddr_un($a); } elsif ($a =~ /\A(\d+(?:\.\d+){3})(?::(\d+))?\z/) { my $n = Socket::inet_pton(AF_INET, $1); $sockaddr = Socket::pack_sockaddr_in($2 // 80, $n) if defined $n; } elsif ($a =~ /\A\[([[:xdigit:]:.]{2,39})\](?::(\d+))?\z/) { my $n = Socket::inet_pton(AF_INET6, $1); $sockaddr = Socket::pack_sockaddr_in6($2 // 80, $n) if defined $n; } die "Invalid address: $a\n" unless defined $sockaddr; push @sockaddr, $sockaddr; } # Use existing HTTPd to serve challenge files using 'challenge-directory' # as document root if (defined (my $dir = $conf->{'challenge-directory'})) { $dir = spec_expand($dir); print STDERR "[$$] Using existing webserver on $dir\n" if $OPTS{debug}; # lacme(8) doesn't have the list of challenge files to delete on # cleanup -- instead, we unlink all files and fails at # initialization stage when the challenge directory is not empty opendir my $dh, $dir or die "opendir($dir): $!\n"; while (readdir $dh) { die "Error: Refusing to use non-empty challenge directory $dir\n" unless $_ eq '.' or $_ eq '..'; } closedir $dh or die "closedir: $!"; undef $dh; # use a "lock file" (NFS-friendly) to avoid concurrent usages my $lockfile = ".$NAME.lock"; sysopen(my $fh, "$dir/$lockfile", O_CREAT|O_EXCL|O_WRONLY, 0600) or die "Can't create lockfile in challenge directory: $!"; print $fh $$, "\n"; close $fh or die "close: $!"; undef $fh; push @CLEANUP, sub() { if (opendir(my $dh, $dir)) { my @files = grep { $_ ne '.' and $_ ne '..' and $_ ne $lockfile } readdir $dh; closedir $dh or warn "closedir: $!"; push @files, $lockfile; # unlink $lockfile last foreach (@files) { die unless /\A(.+)\z/; # untaint unlink "$dir/$1" or warn "unlink($dir/$1): $!"; } } else { warn "opendir($dir): $!\n"; } }; return $dir; # ignore 'listen' and 'iptables' } die "'challenge-directory' option is required in section [webserver] when 'listen' is empty\n" unless @sockaddr; # create a temporary directory; give write access to the ACME client # and read access to the webserver my $tmpdir = File::Temp::->newdir(CLEANUP => 1, TMPDIR => 1, TEMPLATE => "acme-challenge.XXXXXXXXXX") // die; chmod 0755, $tmpdir or die "chmod: $!"; if ((my $username = $CONFIG->{client}->{user}) ne '') { my $uid = getpwnam($username) // die "getpwnam($username)", ($! ? ": $!" : "\n"); chown($uid, -1, $tmpdir) or die "chown: $!"; } # create socket(s) and spawn webserver(s) my @sockaddr4; foreach my $sockaddr (@sockaddr) { my $domain = Socket::sockaddr_family($sockaddr) // die; socket(my $sock, $domain, SOCK_STREAM, 0) or die "socket: $!"; setsockopt($sock, SOL_SOCKET, SO_REUSEADDR, pack("l", 1)) if $domain == AF_INET or $domain == AF_INET6; my $p; # pretty-print the address/port if ($domain == AF_UNIX) { $p = Socket::unpack_sockaddr_un($sockaddr); } elsif ($domain == AF_INET) { my ($port, $addr) = Socket::unpack_sockaddr_in($sockaddr); $p = Socket::inet_ntop($domain, $addr).":$port"; } elsif ($domain == AF_INET6) { my ($port, $addr) = Socket::unpack_sockaddr_in6($sockaddr); $p = "[".Socket::inet_ntop($domain, $addr)."]:$port"; } if ($domain == AF_UNIX) { # bind(2) with a loose umask(2) to allow anyone to connect my $umask = umask(0111) // die; my $path = Socket::unpack_sockaddr_un($sockaddr); bind($sock, $sockaddr) or die "Couldn't bind to $p: $!"; push @CLEANUP, sub() { print STDERR "Unlinking $path\n" if $OPTS{debug}; unlink $path or warn "Warning: Couldn't unlink $path: $!"; }; umask($umask) // die; } else { bind($sock, $sockaddr) or die "Couldn't bind to $p: $!"; } listen($sock, 5) or die "listen: $!"; # spawn a webserver component bound to the given socket my $pid = fork() // "fork: $!"; unless ($pid) { drop_privileges($conf->{user}, $conf->{group}, $tmpdir); open STDIN, '<', '/dev/null' or die "open(/dev/null): $!"; set_FD_CLOEXEC($sock, 0); $ENV{DEBUG} = $OPTS{debug} // 0; # use execve(2) rather than a Perl pseudo-process to ensure that # the child doesn't have access to the parent's memory my ($cmd, @args) = split(/\s+/, $conf->{command}) or die "Empty webserver command\n"; exec { $cmd } $cmd, @args, fileno($sock) or die; } print STDERR "[$$] Forking ACME webserver bound to $p, child PID $pid\n" if $OPTS{debug}; set_FD_CLOEXEC($sock, 1); push @CLEANUP, sub() { print STDERR "[$$] Shutting down ACME webserver bound to $p\n" if $OPTS{debug}; kill 15 => $pid; waitpid $pid => 0; shutdown($sock, SHUT_RDWR) or warn "shutdown: $!"; }; # on dual-stack ipv4/ipv6, we'll need to open the port for the # v4-mapped address as well if ($domain == AF_INET6) { my $v6only = getsockopt($sock, Socket::IPPROTO_IPV6, Socket::IPV6_V6ONLY) // die "getsockopt(IPV6_V6ONLY): $!"; my ($port, $addr) = Socket::unpack_sockaddr_in6($sockaddr); my $mask = "\xFF" x 12 . "\x00" x 4; my $prefix = "\x00" x 10 . "\xFF" x 2 . "\x00" x 4; if (unpack('i', $v6only) == 0) { if ($addr eq IN6ADDR_ANY) { push @sockaddr4, Socket::pack_sockaddr_in($port, INADDR_ANY); } elsif (($addr & $mask) eq $prefix) { my $v4 = substr($addr, 12); push @sockaddr4, Socket::pack_sockaddr_in($port, $v4); } } } } # allow incoming traffic on the given addresses if (lc ($conf->{iptables} // 'No') eq 'yes') { iptables_save(AF_INET, @sockaddr, @sockaddr4); iptables_save(AF_INET6, @sockaddr); } return $tmpdir; } ############################################################################# # Save current iptables/ipv6tables to a temporary file and install # temporary rules to open the given addresses/ports. sub iptables_save($@) { my $domain = shift; my @sockaddr = grep { Socket::sockaddr_family($_) == $domain } @_; return unless @sockaddr; # no address in that domain # install iptables my $iptables_bin = $domain == AF_INET ? 'iptables' : $domain == AF_INET6 ? 'ip6tables' : die; my $iptables_tmp = File::Temp::->new(TMPDIR => 1) // die; set_FD_CLOEXEC($iptables_tmp, 1); my $pid = fork() // die "fork: $!"; unless ($pid) { open STDIN, '<', '/dev/null' or die "open(/dev/null): $!"; open STDOUT, '>&', $iptables_tmp or die "dup: $!"; $| = 1; # turn off buffering for STDOUT exec "/usr/sbin/$iptables_bin-save", "-c" or die; } waitpid $pid => 0; die "Error: /usr/sbin/$iptables_bin-save exited with value ".($? >> 8) if $? > 0; # seek back to the begining, as we'll restore directly from the # handle and not from the file. XXX if there was a way in Perl to # use open(2) with the O_TMPFILE flag we would use that to avoid # creating a file to start with seek($iptables_tmp, SEEK_SET, 0) or die "seek: $!"; push @CLEANUP, sub() { print STDERR "[$$] Restoring $iptables_bin\n" if $OPTS{debug}; my $pid = fork() // die "fork: $!"; unless ($pid) { open STDIN, '<&', $iptables_tmp or die "dup: $!"; open STDOUT, '>', '/dev/null' or die "open(/dev/null): $!"; exec "/usr/sbin/$iptables_bin-restore", "-c" or die; } waitpid $pid => 0; warn "Warning: /usr/sbin/$iptables_bin-restore exited with value ".($? >> 8) if $? > 0; }; # it's safe to install the new iptables to open $addr:$port now that # the restore hook is in place foreach my $sockaddr (@sockaddr) { my ($port, $addr, $mask); if ($domain == AF_INET) { ($port, $addr) = Socket::unpack_sockaddr_in($sockaddr); $mask = $addr eq INADDR_ANY ? '0' : '32'; } elsif ($domain == AF_INET6) { ($port, $addr) = Socket::unpack_sockaddr_in6($sockaddr); $mask = $addr eq IN6ADDR_ANY ? '0' : '128'; } my $dest = Socket::inet_ntop($domain, $addr) .'/'. $mask; system ("/usr/sbin/$iptables_bin", qw/-I INPUT -p tcp -m tcp -m state/, '-d', $dest, '--dport', $port, '--state', 'NEW,ESTABLISHED', '-j', 'ACCEPT') == 0 or die; system ("/usr/sbin/$iptables_bin", qw/-I OUTPUT -p tcp -m tcp -m state/, '-s', $dest, '--sport', $port, '--state', 'ESTABLISHED', '-j', 'ACCEPT') == 0 or die; } } ############################################################################# # Spawn the client component, and wait for it to return. # If $args->{in} is defined, the data is written to the client's STDIN. # If $args->{out} is defined, its value is set to client's STDOUT data. # sub acme_client($@) { my $args = shift; my @args = @_; my ($client, $cleanup); my $conf = $CONFIG->{client}; if (defined (my $accountd = $CONFIG->{accountd})) { warn "Setting 'privkey' in lacme.conf's [accountd] section is deprecated and will become an error in a future release! " ."Set it in lacme-accountd.conf instead.\n" if $accountd->{privkey} ne ''; my $GPG_TTY = $ENV{GPG_TTY}; socketpair($client, my $s, AF_UNIX, SOCK_STREAM, PF_UNSPEC) or die "socketpair: $!"; my $pid = fork() // "fork: $!"; unless ($pid) { drop_privileges($accountd->{user}, $accountd->{group}, '/'); $client->close() or die "close: $!"; open STDIN, '<&', $s or die "dup: $!"; open STDOUT, '>&', $s or die "dup: $!"; set_FD_CLOEXEC($s, 1); $ENV{GPG_TTY} = $GPG_TTY if defined $GPG_TTY; my ($cmd, @args) = split(/\s+/, $accountd->{command}) or die "Empty accountd command\n"; $_ = spec_expand($_) foreach ($cmd, @args); # expand %-specifiers after privilege drop and whitespace split push @args, '--stdio'; push @args, '--config='.$accountd->{config} if $accountd->{config} ne ''; push @args, '--privkey='.$accountd->{privkey} if $accountd->{privkey} ne ''; # XXX deprecated in 0.8.0 push @args, '--quiet' unless lc $accountd->{quiet} eq 'no'; push @args, '--debug' if $OPTS{debug}; exec { $cmd } $cmd, @args or die; } print STDERR "[$$] Forking lacme-accountd, child PID $pid\n" if $OPTS{debug}; $s->close() or die "close: $!"; $cleanup = sub() { print STDERR "[$$] Shutting down lacme-accountd\n" if $OPTS{debug}; shutdown($client, SHUT_RDWR) or warn "shutdown: $!"; $client->close() or warn "close: $!"; }; push @CLEANUP, $cleanup; } else { my @stat; my $sockname = spec_expand($OPTS{socket} // $conf->{socket}); $sockname = $sockname =~ /\A(\p{Print}+)\z/ ? $1 : die "Invalid socket name\n"; # untaint $sockname # ensure we're the only user with write access to the parent dir my $dirname = dirname($sockname); @stat = stat($dirname) or die "Error: stat($dirname): $!\n"; die "Error: Insecure permissions on $dirname\n" if ($stat[2] & 0022) != 0; # ensure we're the only user with read/write access to the socket @stat = stat($sockname) or die "Can't stat $sockname: $! (Is lacme-accountd running?)\n"; die "Error: Insecure permissions on $sockname\n" if ($stat[2] & 0066) != 0; # connect(2) to the socket socket($client, PF_UNIX, SOCK_STREAM, 0) or die "socket: $!"; my $sockaddr = Socket::sockaddr_un($sockname) // die "Invalid address $sockname\n"; until (connect($client, $sockaddr)) { next if $! == EINTR; # try again if connect(2) was interrupted by a signal die "connect: $!"; } } set_FD_CLOEXEC($client, 1); my $client_config; do { my $tmp = File::Temp::->new(TMPDIR => 1, TEMPLATE => "lacme-client.conf.json-XXXXXXXXXX", UNLINK => 1) // die; print $tmp JSON::->new->encode($conf); open $client_config, "<", $tmp->filename() or die "open: $!"; }; # use execve(2) rather than a Perl pseudo-process to ensure that the # child doesn't have access to the parent's memory my ($cmd, @args2) = split(/\s+/, $conf->{command}) or die "Empty client command\n"; my @fileno = map { fileno($_) =~ /^(\d+)$/ ? $1 : die } ($client_config, $client); # untaint fileno my $rv = spawn({in => $args->{in}, out => $args->{out}, child => sub() { drop_privileges($conf->{user}, $conf->{group}, $args->{chdir} // '/'); umask(0022) // die; set_FD_CLOEXEC($_, 0) for ($client_config, $client); $ENV{DEBUG} = $OPTS{debug} // 0; }}, $cmd, @args2, $COMMAND, @fileno, @args); close $client_config or die "close: $!\n"; if (defined $cleanup) { @CLEANUP = grep { $_ ne $cleanup } @CLEANUP; $cleanup->(); } return $rv; } sub spawn($@) { my $args = shift; my ($cmd, @args) = @_; # create communication pipes if needed my ($in_rd, $in_wd, $out_rd, $out_wd); if (defined $args->{in}) { pipe $in_rd, $in_wd or die "pipe: $!"; } if (defined $args->{out} and ref $args->{out} ne 'GLOB') { pipe $out_rd, $out_wd or die "pipe: $!"; } my $pid = fork() // "fork: $!"; unless ($pid) { # child $args->{child}->() if defined $args->{child}; if (defined $args->{in}) { close $in_wd or die "close: $!"; open STDIN, '<&', $in_rd or die "dup: $!"; } else { open STDIN, '<', '/dev/null' or die "open(/dev/null): $!"; } if (!defined $args->{out}) { open STDOUT, '>', '/dev/null' or die "open(/dev/null): $!"; } elsif (ref $args->{out} ne 'GLOB') { close $out_rd or die "close: $!"; open STDOUT, '>&', $out_wd or die "dup: $!"; } elsif (fileno(STDOUT) != fileno($args->{out})) { open STDOUT, '>&', $args->{out} or die "dup: $!"; } exec { $cmd } $cmd, @args or die; } push @CLEANUP, sub() { kill 15 => $pid; waitpid $pid => 0; }; # parent print STDERR "[$$] Forking $cmd, child PID $pid\n" if $OPTS{debug}; if (defined $args->{in}) { $in_rd->close() or die "close: $!"; $in_wd->print($args->{in}); $in_wd->close() or die "close: $!"; } if (defined $args->{out} and ref $args->{out} ne 'GLOB') { $out_wd->close() or die "close: $!"; if (ref $args->{out} eq 'CODE') { $args->{out}->($out_rd); } elsif (ref $args->{out} eq 'SCALAR') { ${$args->{out}} = do { local $/ = undef; $out_rd->getline() }; } $out_rd->close() or die "close: $!"; } waitpid $pid => 0; pop @CLEANUP; undef ${$args->{out}} if defined $args->{out} and ref $args->{out} eq 'SCALAR' and $? > 0; return $? > 255 ? ($? >> 8) : $? > 0 ? 1 : 0; } ############################################################################# # Install the certificate (optionally excluding the chain of trust) # sub install_cert($$%) { my ($path, $content, %args) = @_; my $fh = File::Temp::->new(TEMPLATE => "$path.XXXXXXXXXX", UNLINK => 0) // die; my $path_tmp = $fh->filename(); eval { $fh->print($content) or die "print: $!"; my $mode; if ((my $m = $args{mode}) ne "") { die "Not an octal string: $m\n" unless $m =~ /^[0-9]+$/; $mode = oct($m); } else { my $umask = umask() // die; $mode = 0644 &~ $umask; } chmod($mode, $fh) or die "chown: $!"; if ((my $owner = $args{owner}) ne "") { my ($user, $group) = split /:/, $owner, 2; my $uid = getpwnam($user) // die "getpwnam($user)", ($! ? ": $!" : "\n"); my $gid = getgrnam($group) // die "getgrnam($group)", ($! ? ": $!" : "\n") if defined $group; chown($uid, $gid // -1, $fh) or die "chown: $!"; } $fh->close() or die "close: $!"; }; if ($@) { print STDERR "Unlinking $path_tmp\n" if $OPTS{debug}; unlink $path_tmp or warn "unlink($path_tmp): $!"; die $@; } else { # atomically replace $path if it exists rename($path_tmp, $path) or die "rename($path_tmp, $path): $!"; } } ############################################################################# # account [--tos-agreed] [CONTACT ..] # if ($COMMAND eq 'account') { my $flags = 0; $flags |= 1 if $OPTS{'register'}; $flags |= 2 if $OPTS{'tos-agreed'}; $flags |= 4 if $OPTS{'deactivate'}; exit acme_client({out => \*STDOUT}, $flags, @ARGV); } ############################################################################# # newOrder [SECTION ..] # elsif ($COMMAND eq 'newOrder' or $COMMAND eq 'new-cert') { $OPTS{'min-days'} = -1 if $OPTS{force}; $COMMAND = 'newOrder'; my $conffiles = defined $OPTS{'config-certs'} ? $OPTS{'config-certs'} : defined $CONFIG->{_}->{'config-certs'} ? [ split(/\s+/, $CONFIG->{_}->{'config-certs'}) ] : [ "$NAME-certs.conf", "$NAME-certs.conf.d/" ]; $_ = spec_expand($_) foreach @$conffiles; my ($conf, %defaults); foreach my $conffile (@$conffiles) { $conffile = dirname($CONFFILENAME) .'/'. $conffile unless $conffile =~ /\A\//; my @filenames; unless ($conffile =~ s#/\z## or -d $conffile) { @filenames = ($conffile); } else { opendir my $dh, $conffile or die "opendir($conffile): $!\n"; while (readdir $dh) { if (/\.conf\z/) { push @filenames, "$conffile/$_"; } elsif ($_ ne '.' and $_ ne '..') { warn "$conffile/$_ has unknown suffix, skipping\n"; } } closedir $dh or die "closedir: $!"; } foreach my $filename (sort @filenames) { print STDERR "Reading $filename\n" if $OPTS{debug}; my $h = Config::Tiny::->read($filename) or die Config::Tiny::->errstr()."\n"; my $def = delete $h->{_} // {}; $defaults{$_} = $def->{$_} foreach keys %$def; my @valid = qw/certificate certificate-chain certificate-key min-days CAfile hash keyUsage subject subjectAltName tlsfeature owner chown mode chmod notify/; foreach my $s (keys %$h) { $conf->{$s} = { map { $_ => delete $h->{$s}->{$_} } @valid }; die "Unknown option(s) in [$s]: ".join(', ', keys %{$h->{$s}})."\n" if %{$h->{$s}}; $conf->{$s}->{$_} //= $defaults{$_} foreach keys %defaults; } } } my $challenge_dir; my $rv = 0; foreach my $s (@ARGV ? @ARGV : sort (keys %$conf)) { my $conf = $conf->{$s} // do { print STDERR "Warning: No such section $s, skipping\n"; $rv = 1; next; }; if ($OPTS{debug}) { print STDERR "Configuration option for $s:\n"; print STDERR " $_ = $conf->{$_}\n" foreach grep { defined $conf->{$_} } (sort keys %$conf); } my @certpaths = grep {defined $_ and $_ ne ""} @$conf{qw/certificate-chain certificate/}; unless (@certpaths) { print STDERR "[$s] Warning: Missing 'certificate' and 'certificate-chain', skipping\n"; $rv = 1; next; } # skip certificates that expire at least $conf->{'min-days'} days in the future if (-f $certpaths[0] and defined (my $t = x509_enddate($certpaths[0]))) { my $d = $OPTS{'min-days'} // $conf->{'min-days'} // 21; if ($d >= 0 and $t - time > $d*86400) { my $d = POSIX::strftime('%Y-%m-%d %H:%M:%S UTC', gmtime($t)); print STDERR "[$s] Valid until $d, skipping\n" unless $OPTS{quiet}; next; } } # generate the CSR my $csr = gen_csr(map {$_ => $conf->{$_}} qw/certificate-key keyUsage subject subjectAltName tlsfeature hash/) // do { print STDERR "[$s] Warning: Couldn't generate CSR, skipping\n"; $rv = 1; next; }; # spawn the webserver if not done already $challenge_dir //= spawn_webserver(); # list all authorization domains to request my @authz; push @authz, $1 if defined $conf->{subject} =~ /\A.*\/CN=($RE_DOMAIN)\z/o; if (defined $conf->{subjectAltName}) { foreach my $d (split /,/, $conf->{subjectAltName}) { next unless $d =~ s/\A\s*DNS://; if ($d =~ /\A$RE_DOMAIN\z/o) { push @authz, $d unless grep {$_ eq $d} @authz; } else { print STDERR "[$s] Warning: Ignoring invalid domain $d\n"; } } } my $chain; print STDERR "[$s] Will request authorization for: ".join(", ", @authz), "\n" if $OPTS{debug}; if (acme_client({chdir => $challenge_dir, in => $csr, out => \$chain}, @authz)) { print STDERR "[$s] Error: Couldn't issue X.509 certificate!\n"; $rv = 1; next; } my @chain; eval { my $mem = Net::SSLeay::BIO_s_mem() or die; my $bio = Net::SSLeay::BIO_new($mem) or die; die "incomplete write" unless Net::SSLeay::BIO_write($bio, $chain) == length($chain); my $sk_x509_info = Net::SSLeay::PEM_X509_INFO_read_bio($bio); my $n = Net::SSLeay::sk_X509_INFO_num($sk_x509_info); for (my $i = 0; $i < $n; $i++) { my $x509_info = Net::SSLeay::sk_X509_INFO_value($sk_x509_info, $i); my $x509 = Net::SSLeay::P_X509_INFO_get_x509($x509_info); my $cert = Net::SSLeay::PEM_get_string_X509($x509); push @chain, $cert; } Net::SSLeay::BIO_free($bio) or die; }; if ($@ or !@chain) { print STDERR "[$s] Error: Received bogus X.509 certificate from ACME server!\n"; $rv = 1; next; } my $cert = shift @chain; # leave only the intermediate in @chain # extract pubkeys from CSR and cert, and ensure they match # XXX would be nice to use X509_get_X509_PUBKEY and X509_REQ_get_X509_PUBKEY here, # or EVP_PKEY_cmp(), but unfortunately Net::SSLeay 1.88 doesn't support these my ($cert_pubkey, $csr_pubkey); spawn({in => $cert, out => \$cert_pubkey}, qw{openssl x509 -in /dev/stdin -inform PEM -noout -pubkey}); spawn({in => $csr, out => \$csr_pubkey }, qw{openssl req -in /dev/stdin -inform DER -noout -pubkey}); unless (defined $cert_pubkey and defined $csr_pubkey and $cert_pubkey eq $csr_pubkey) { print STDERR "[$s] Error: Received bogus X.509 certificate from ACME server!\n"; $rv = 1; next; }; # verify certificate validity against the CA bundle if ((my $CAfile = $conf->{CAfile} // '@@datadir@@/lacme/ca-certificates.crt') ne '') { my $chain_tmp = File::Temp::->new(SUFFIX => '.crt', TMPDIR => 1) // die; $chain_tmp->say($_) foreach @chain; $chain_tmp->flush(); my %args = (in => $cert); $args{out} = \*STDERR if $OPTS{debug}; my @options = ('-trusted', $CAfile); push @options, '-untrusted', $chain_tmp->filename() if @chain; push @options, ('-purpose', 'sslserver', '-x509_strict'); push @options, '-show_chain' if $OPTS{debug}; if (spawn(\%args, 'openssl', 'verify', @options)) { print STDERR "[$s] Error: Received invalid X.509 certificate from ACME server!\n"; $rv = 1; next; } } # install certificate my %install_opts = ( mode => $conf->{mode} // $conf->{chmod} // "", owner => $conf->{owner} // $conf->{chown} // "" ); if ((my $path = $conf->{'certificate'} // "") ne "") { print STDERR "Installing X.509 certificate $path\n"; install_cert($path => $cert, %install_opts); } if ((my $path = $conf->{'certificate-chain'} // "") ne "") { print STDERR "Installing X.509 certificate chain $path\n"; install_cert($path => $chain, %install_opts); } my @certopts = join ',', qw/no_header no_version no_pubkey no_sigdump/; open my $fh, '|-', qw{openssl x509 -in /dev/stdin -noout -fingerprint -sha256 -text -certopt}, @certopts or die "fork: $!"; print $fh $cert; close $fh or die $! ? "close: $!" : "Error: x509(1ssl) exited with value ".($? >> 8)."\n"; if (defined $conf->{notify}) { print STDERR "Running notification command `$conf->{notify}`\n"; if (system($conf->{notify}) != 0) { print STDERR "Warning: notification command exited with value ".($? >> 8)."\n"; $rv = 1; } } } undef $challenge_dir; exit $rv; } ############################################################################# # revokeCert FILE [FILE ..] # elsif ($COMMAND eq 'revokeCert' or $COMMAND eq 'revoke-cert') { die "Nothing to revoke\n" unless @ARGV; my $rv = 0; $COMMAND = 'revokeCert'; foreach my $filename (@ARGV) { print STDERR "Revoking $filename\n"; # conversion PEM -> DER open my $fh, '-|', qw{openssl x509 -in}, $filename, qw{-outform DER} or die "fork: $!"; my $der = do { local $/ = undef; <$fh> }; close $fh or die $! ? "close: $!" : "Error: x509(1ssl) exited with value ".($? >> 8)."\n"; my @certopts = join ',', qw/no_header no_version no_pubkey no_sigdump no_extensions/; open my $fh2, '|-', qw{openssl x509 -in /dev/stdin -inform DER -noout -fingerprint -sha256 -text -certopt}, @certopts or die "fork: $!"; print $fh2 $der; close $fh2 or die $! ? "close: $!" : "Error: x509(1ssl) exited with value ".($? >> 8)."\n"; if (acme_client({in => $der})) { print STDERR "Warning: Couldn't revoke $filename\n"; $rv = 1; } } exit $rv; } ############################################################################# # else { die "Unknown command $COMMAND" } END { local $?; $_->() foreach reverse @CLEANUP; } lacme-0.8.3/lacme-accountd000077500000000000000000000266411463261126600154300ustar00rootroot00000000000000#!/usr/bin/perl -T #---------------------------------------------------------------------- # ACME client written with process isolation and minimal privileges in mind # (account key manager) # Copyright © 2015-2021 Guilhem Moulin # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . #---------------------------------------------------------------------- use v5.14.2; use strict; use warnings; our $VERSION = '0.8.3'; my $PROTOCOL_VERSION = 1; my $NAME = 'lacme-accountd'; use Digest::SHA 'sha256'; use Errno 'EINTR'; use File::Basename 'dirname'; use Getopt::Long qw/:config posix_default no_ignore_case gnu_getopt auto_version/; use MIME::Base64 qw/decode_base64url encode_base64url/; use Socket qw/PF_UNIX SOCK_STREAM SHUT_RDWR/; use Config::Tiny (); use JSON (); # Clean up PATH $ENV{PATH} = join ':', qw{/usr/bin /bin}; delete @ENV{qw/IFS CDPATH ENV BASH_ENV/}; my ($SOCKNAME, $S, %OPTS); $SIG{$_} = sub() { exit } foreach qw/INT TERM/; # run the END block upon SIGINT/SIGTERM ############################################################################# # Parse and validate configuration # sub usage(;$$) { my $rv = shift // 0; if ($rv) { my $msg = shift; print STDERR $msg."\n" if defined $msg; print STDERR "Try '$NAME --help' or consult the manpage for more information.\n"; } else { print STDERR "Usage: $NAME [--config=FILE] [--privkey=ARG] [--socket=PATH] [--quiet]\n" ."Consult the manpage for more information.\n"; } exit $rv; } usage(1) unless GetOptions(\%OPTS, qw/config=s privkey=s socket=s stdio quiet|q debug help|h/); usage(0) if $OPTS{help}; my ($LOG, $LOGLEVEL); my ($LOG_INFO, $LOG_VERBOSE, $LOG_DEBUG) = (0,1,2); sub logmsg($@) { my $lvl = shift; if (defined $LOG and ($lvl <= $LOGLEVEL or $lvl <= $LOG_VERBOSE)) { # --quiet flag hides verbose-level messages from the standard # error but we add them to the logfile nonetheless my $now = localtime; $LOG->printflush("[", $now, "] ", @_, "\n") or warn "print: $!"; } if ($lvl <= $LOGLEVEL) { print STDERR @_, "\n" or warn "print: $!"; } } sub info(@) { logmsg($LOG_INFO => @_); } sub error(@) { my @msg = ("Error: ", @_); info(@msg); exit 255; } sub panic(@) { my @loc = caller; my @msg = ("PANIC at line $loc[2] in $loc[1]"); push @msg, ": ", @_ if @_; info(@msg); exit 255; } sub env_fallback($$) { my $v = $ENV{ shift() }; return (defined $v and $v ne "") ? $v : shift; } sub spec_expand($) { my $str = shift; $str =~ s#%(.)# my $x = $1 eq "C" ? ($< == 0 ? "@@localstatedir@@/cache" : env_fallback(XDG_CACHE_HOME => "$ENV{HOME}/.cache")) : $1 eq "E" ? ($< == 0 ? "@@sysconfdir@@" : env_fallback(XDG_CONFIG_HOME => "$ENV{HOME}/.config")) : $1 eq "g" ? (getgrgid((split /\s/,$()[0]))[0] : $1 eq "G" ? $( =~ s/\s.*//r : $1 eq "h" ? (getpwuid($<))[7] : $1 eq "u" ? (getpwuid($<))[0] : $1 eq "U" ? $< : $1 eq "t" ? ($< == 0 ? "@@runstatedir@@" : $ENV{XDG_RUNTIME_DIR}) : $1 eq "T" ? env_fallback(TMPDIR => "/tmp") : $1 eq "%" ? "%" : error("\"$str\" has unknown specifier %$1"); error("Undefined expansion %$1 in \"$str\"") unless defined $x; $x; #ge; return $str; } do { my $conffile = spec_expand($OPTS{config} // "%E/lacme/$NAME.conf"); if (defined $OPTS{config} or -e $conffile) { print STDERR "Using configuration file: $conffile\n" if $OPTS{debug}; my $h = Config::Tiny::->read($conffile) or error(Config::Tiny::->errstr()); my $h2 = delete $h->{_} // {}; if ((my $logfile = $h2->{logfile} // "") ne "") { $logfile = spec_expand($logfile); die "Invalid log file name\n" unless $logfile =~ /\A(\p{Print}+)\z/; # untaint open $LOG, ">>", $1 or die "Can't open $1: $!"; # open ASAP (before config validation) } error("Invalid section(s): ".join(', ', keys %$h)) if %$h; my %h = map { $_ => delete $h2->{$_} } qw/privkey gpg socket logfile keyid quiet/; error("Unknown option(s): ".join(', ', keys %$h2)) if %$h2; $h{quiet} = lc $h{quiet} eq 'yes' ? 1 : 0 if defined $h{quiet}; $OPTS{$_} //= $h{$_} foreach grep {defined $h{$_}} keys %h; } else { print STDERR "Ignoring missing configuration file at default location $conffile\n" if $OPTS{debug}; } $LOGLEVEL = $OPTS{debug} ? $LOG_DEBUG : $OPTS{quiet} ? $LOG_INFO : $LOG_VERBOSE; error("'privkey' is not specified") unless defined $OPTS{privkey}; }; ############################################################################# # Build the JSON Web Key (RFC 7517) from the account key's public parameters, # and determine the signing method $SIGN. # my ($EXTRA_GREETING_STR, $JWK_STR, $SIGN); if ($OPTS{privkey} =~ /\A(file|gpg):(\p{Print}+)\z/) { my ($method, $filename) = ($1, spec_expand($2)); my ($fh, @command); if ($method eq 'file') { # generate with `openssl genpkey -algorithm RSA` open $fh, '<', $filename or error("Can't open $filename: $!"); } elsif ($method eq 'gpg') { @command = split /\s+/, ($OPTS{gpg} // 'gpg --quiet'); open $fh, '-|', @command, qw/-o - --decrypt --/, $filename or panic("fork: $!"); } else { panic(); # impossible } my $str = do {local $/ = undef; <$fh>}; close $fh or ($! or !@command) ? panic("close: $!") : error("$command[0] exited with value ".($? >> 8)); require 'Crypt/OpenSSL/RSA.pm'; my $rsa = Crypt::OpenSSL::RSA->new_private_key($str); undef $str; error("$filename: Not a private key") unless $rsa->is_private(); error("$filename: Invalid key") unless $rsa->check_key(); $rsa->use_sha256_hash(); require 'Crypt/OpenSSL/Bignum.pm'; my ($n, $e) = $rsa->get_key_parameters(); # don't include private params! $_ = encode_base64url($_->to_bin()) foreach ($n, $e); my %extra_greeting; my %jwk = ( kty => 'RSA', n => $n, e => $e ); $extra_greeting{alg} = 'RS256'; # SHA256withRSA (RFC 7518 sec. A.1) $SIGN = sub($) { $rsa->sign($_[0]) }; # use of SHA-256 digest in the thumbprint is hardcoded, see RFC 8555 sec. 8.1 $JWK_STR = JSON::->new->utf8->canonical->encode(\%jwk); $extra_greeting{"jwk-thumbprint"} = encode_base64url(sha256($JWK_STR)); if ((my $kid = $OPTS{keyid} // "") ne "") { $extra_greeting{kid} = $kid; $JWK_STR = "{}"; } $EXTRA_GREETING_STR = JSON::->new->encode(\%extra_greeting); } else { error("Unsupported method: $OPTS{privkey}"); } ############################################################################# # Create the server UNIX socket and bind(2) against it. # NOTE: We don't use the abstract namespace so we can rely on the file # permissions to keep other users out. (Also, OpenSSH 7.1 doesn't seem # to support the abstract namespace.) The downside is that we have to # delete the file manually. # unless (defined $OPTS{stdio}) { my $sockname = spec_expand($OPTS{socket} // '%t/S.lacme'); $sockname = $sockname =~ /\A(\p{Print}+)\z/ ? $1 : error("Invalid socket name"); # untaint # ensure we're the only user with write access to the parent dir my $dirname = dirname($sockname); my @stat = stat($dirname) or error("stat($dirname): $!"); error("Insecure permissions on $dirname") if ($stat[2] & 0022) != 0; my $umask = umask(0177) // panic(); logmsg($LOG_VERBOSE => "Starting lacme Account Key Manager at $sockname"); socket(my $sock, PF_UNIX, SOCK_STREAM, 0) or panic("socket: $!"); my $sockaddr = Socket::sockaddr_un($sockname) // panic(); bind($sock, $sockaddr) or panic("bind: $!"); ($SOCKNAME, $S) = ($sockname, $sock); listen($S, 1) or panic("listen: $!"); umask($umask) // panic(); }; ############################################################################# # For each new connection, send the protocol version and the account key's # public parameters, then sign whatever comes in # sub conn($$$) { my ($in, $out, $id) = @_; $out->printflush( "$PROTOCOL_VERSION OK ", $EXTRA_GREETING_STR, "\r\n", $JWK_STR, "\r\n" ) or warn "print: $!"; while (defined (my $data = $in->getline())) { $data =~ s/\r\n\z// or panic(); # validate JWS Signing Input from RFC 7515: # ASCII(BASE64URL(UTF8(JWS Protected Header)) || '.' || BASE64URL(JWS Payload)) my ($header, $payload) = split(/\./, $data, 2); if (defined $header and $header =~ /\A[A-Za-z0-9\-_]+\z/) { $header = decode_base64url($header); } else { info("[$id] NOSIGN [malformed JWS Protected Header]"); last; } if (defined $payload and $payload =~ /\A[A-Za-z0-9\-_]*\z/) { # empty payloads are valid, and used for POST-as-GET (RFC 8555 sec. 6.3) $payload = decode_base64url($payload); } else { info("[$id] NOSIGN [malformed JWS Payload]"); last; } my $req = "header=base64url($header) playload=base64url($payload)"; eval { $header = JSON::->new->decode($header); }; if ($@ or # couldn't decode (parse error) # RFC 7515: not a JSON object !defined($header) or ref($header) ne "HASH" or # RFC 8555 sec. 6.2: the protected Header MUST include all these fields grep !defined, @$header{qw/alg nonce url/} or # RFC 8555 sec. 6.2: the protected header MUST include any of these fields !grep defined, @$header{qw/jwk kid/}) { info("[$id] NOSIGN [invalid JWS Protected Header] ", $req); last; } my $sig = eval { $SIGN->($data) }; panic($@) if $@ or !defined $sig; logmsg($LOG_VERBOSE => "[$id] SIGNED ", $req); $out->printflush( encode_base64url($sig), "\r\n" ) or warn "print: $!"; } } if (defined $OPTS{stdio}) { conn(\*STDIN, \*STDOUT, $$); } else { $SIG{PIPE} = 'IGNORE'; # ignore broken pipes for (my $count = 0;; $count++) { accept(my $conn, $S) or do { next if $! == EINTR; # try again if accept(2) was interrupted by a signal panic("accept: $!"); }; logmsg($LOG_VERBOSE => "[$count] Accepted new connection"); conn($conn, $conn, $count); logmsg($LOG_VERBOSE => "[$count] Connection terminated"); $conn->close() or warn "close: $!"; } } ############################################################################# # END { if (defined $SOCKNAME and -S $SOCKNAME) { logmsg($LOG_DEBUG => "Unlinking $SOCKNAME"); unlink $SOCKNAME or info("Error: unlink($SOCKNAME): $!"); } if (defined $S) { logmsg($LOG_VERBOSE => "Shutting down and closing lacme Account Key Manager"); shutdown($S, SHUT_RDWR) or info("Error: shutdown: $!"); close $S or info("Error: close: $!"); } } lacme-0.8.3/lacme-accountd.1.md000066400000000000000000000163201463261126600161540ustar00rootroot00000000000000% lacme-accountd(1) % [Guilhem Moulin](mailto:guilhem@fripost.org) % March 2016 Name ==== lacme-accountd - [ACME] client written with process isolation and minimal privileges in mind (account key manager) Synopsis ======== `lacme-accountd` [`--config=FILENAME`] [`--privkey=ARG`] [`--socket=PATH`] [`--quiet`] Description =========== `lacme-accountd` is the account key manager component of [`lacme`(8)], a small [ACME] client written with process isolation and minimal privileges in mind. No other [`lacme`(8)] component needs access to the account key; in fact the account key could as well be stored on another host or a smartcard. `lacme-accountd` binds to a UNIX-domain socket (specified with `--socket=`), which [ACME] clients can connect to in order to request data signatures. As a consequence, `lacme-accountd` needs to be up and running before using [`lacme`(8)] to issue [ACME] commands. Also, the process does not automatically terminate after the last signature request: instead, one sends an `INT` or `TERM` [`signal`(7)] to bring the server down. Furthermore, one can use the UNIX-domain socket forwarding facility of [OpenSSH] 6.7 and later to run `lacme-accountd` and [`lacme`(8)] on different hosts. For instance one could store the account key on a machine that is not exposed to the internet. See the **[examples](#examples)** section below. Options ======= `--config=`*filename* : Use *filename* as configuration file instead of `%E/lacme/lacme-accountd.conf`. The value is subject to [%-specifier expansion](#percent-specifiers). `lacme-accountd` fails when `--config=` is used with a non-existent file, but a non-existent default location is treated as if it were an empty file. See the **[configuration file](#configuration-file)** section below for the configuration options. `--privkey=`*value* : Specify the (private) account key to use for signing requests. Currently supported *value*s are: * `file:`*FILE*, for a private key in PEM format (optionally symmetrically encrypted) * `gpg:`*FILE*, for a [`gpg`(1)]-encrypted private key *FILE* is subject to [%-specifier expansion](#percent-specifiers). The [`genpkey`(1ssl)] command can be used to generate a new private (account) key: $ install -vm0600 /dev/null /path/to/account.key $ openssl genpkey -algorithm RSA -out /path/to/account.key Currently `lacme-accountd` only supports RSA account keys. `--socket=`*path* : Use *path* as the UNIX-domain socket to bind to for signature requests from the [ACME] client. The value is subject to [%-specifier expansion](#percent-specifiers). `lacme-accountd` aborts if *path* exists or if its parent directory is writable by other users. Default: `%t/S.lacme` (omitting `--socket=` therefore yields an error when `lacme-accountd` doesn't run as and the `XDG_RUNTIME_DIR` environment variable is unset or empty). `--stdio` : Read signature requests from the standard input and write signatures to the standard output, instead of using a UNIX-domain socket for communication with the [ACME] client. This _internal_ flag should never be used by standalone `lacme-accountd` instances, only for those [`lacme`(8)] spawns. `-h`, `--help` : Display a brief help and exit. `-q`, `--quiet` : Be quiet. `--debug` : Turn on debug mode. Configuration file ================== When given on the command line, the `--privkey=`, `--socket=` and `--quiet` options take precedence over their counterpart (without leading `--`) in the configuration file. Valid settings are: *privkey* : See `--privkey=`. This setting is required when `--privkey=` is not specified on the command line. *gpg* : For a [`gpg`(1)]-encrypted private account key, specify the binary [`gpg`(1)] to use, as well as some default options. Default: `gpg --quiet`. *socket* : See `--socket=`. *logfile* : An optional file where to log to. The value is subject to [%-specifier expansion](#percent-specifiers). *keyid* : The "Key ID", as shown by `` `acme account` ``, to give the [ACME] client. With an empty *keyid* (the default) the client forwards the JSON Web Key (JWK) to the [ACME] server to retrieve the correct value. A non-empty value therefore saves a round-trip. A non-empty value also causes `lacme-accountd` to send an empty JWK, thereby revoking all account management access (status change, contact address updates etc.) from the client: any `` `acme account` `` command (or any command from [`lacme`(8)] before version 0.8.0) is bound to be rejected by the [ACME] server. This provides a safeguard against malicious clients. *quiet* : Be quiet. Possible values: `Yes`/`No`. %-specifiers {#percent-specifiers} ============ The value the `--config=`, `--privkey=` and `--socket=` CLI options (and also the *privkey*, *socket* and *logfile* settings from the configuration file) are subject to %-expansion for the following specifiers. ---- ------------------------------------------------------------------ `%C` `@@localstatedir@@/cache` for the root user, and `$XDG_CACHE_HOME` for other users (or `$HOME/.cache` if the `XDG_CACHE_HOME` environment variable is unset or empty). `%E` `@@sysconfdir@@` for the root user, and `$XDG_CONFIG_HOME` for other users (or `$HOME/.config` if the `XDG_CONFIG_HOME` environment variable is unset or empty). `%g` Current group name. `%G` Current group ID. `%h` Home directory of the current user. `%t` `@@runstatedir@@` for the root user, and `$XDG_RUNTIME_DIR` for other users. Non-root users may only use `%t` when the `XDG_RUNTIME_DIR` environment variable is set to a non-empty value. `%T` `$TMPDIR`, or `/tmp` if the `TMPDIR` environment variable is unset or empty. `%u` Current user name. `%U` Current user ID. `%%` A literal `%`. ---- ------------------------------------------------------------------ Examples ======== Run `lacme-accountd` in a first terminal: $ lacme-accountd --privkey=file:/path/to/account.key --socket=$XDG_RUNTIME_DIR/S.lacme Then, while `lacme-accountd` is running, execute locally [`lacme`(8)] in another terminal: $ sudo lacme --socket=$XDG_RUNTIME_DIR/S.lacme newOrder Alternatively, use [OpenSSH] 6.7 or later to forward the socket and execute [`lacme`(8)] remotely: $ ssh -oExitOnForwardFailure=yes -tt -R /path/to/remote.sock:$XDG_RUNTIME_DIR/S.lacme user@example.org \ sudo lacme --socket=/path/to/remote.sock newOrder Consult the [`lacme`(8) manual][`lacme`(8)] for a solution involving connecting to `lacme-accountd` on a dedicated remote host. Doing so enables automatic renewal via [`crontab`(5)] or [`systemd.timer`(5)]. See also ======== [`lacme`(8)], [`ssh`(1)] [ACME]: https://tools.ietf.org/html/rfc8555 [`lacme`(8)]: lacme.8.html [`signal`(7)]: https://linux.die.net/man/7/signal [`gpg`(1)]: https://www.gnupg.org/documentation/manpage.en.html [OpenSSH]: https://www.openssh.com/ [`ssh`(1)]: https://man.openbsd.org/ssh [`genpkey`(1ssl)]: https://www.openssl.org/docs/manmaster/man1/openssl-genpkey.html [`crontab`(5)]: https://linux.die.net/man/5/crontab [`systemd.timer`(5)]: https://www.freedesktop.org/software/systemd/man/systemd.timer.html lacme-0.8.3/lacme.8.md000066400000000000000000000447051463261126600143750ustar00rootroot00000000000000% lacme(8) % [Guilhem Moulin](mailto:guilhem@fripost.org) % December 2015 Name ==== lacme - [ACME] client written with process isolation and minimal privileges in mind Synopsis ======== `lacme` [`--config=FILENAME`] [`--socket=PATH`] [*OPTION* …] *COMMAND* [*ARGUMENT* …] Description =========== `lacme` is a small [ACME] client written with process isolation and minimal privileges in mind. It is divided into four components, each with its own executable: 1. A [`lacme-accountd`(1)] process to manage the account key and issue SHA-256 signatures needed for each [ACME] command. (This process binds to a UNIX-domain socket to reply to signature requests from the [ACME] client.) One can use the UNIX-domain socket forwarding facility of OpenSSH 6.7 and later to run [`lacme-accountd`(1)] and `lacme` on different hosts. Alternatively, the [`lacme-accountd`(1)] process can be spawned by the “master” `lacme` process below; in that case, the two processes communicate through a socket pair. 2. A “master” `lacme` process, which runs as root and is the only component with access to the private key material of the server keys. It is used to fork the [ACME] client (and optionally the [ACME] webserver) after dropping root privileges. For certificate issuances (`newOrder` command), it also generates Certificate Signing Requests, then verifies the validity of the issued certificate, and optionally reloads or restarts services when the *notify* setting is set. 3. An actual [ACME] client (specified with the *command* setting of the [`[client]` section](#client-section) of the configuration file), which builds [ACME] commands and dialogues with the remote [ACME] server. Since [ACME] commands need to be signed with the account key, the “master” `lacme` process passes the [`lacme-accountd`(1)] UNIX-domain socket to the [ACME] client: data signatures are requested by writing the data to be signed to the socket. 4. For certificate issuances (`newOrder` command), an optional webserver (specified with the *command* setting of the [`[webserver]` section](#webserver-section) of the configuration file), which is spawned by the “master” `lacme`. (The only challenge type currently supported by `lacme` is `http-01`, which requires a webserver to answer challenges.) That webserver only processes `GET` and `HEAD` requests under the `/.well-known/acme-challenge/` URI. Moreover temporary [`iptables`(8)] rules can be automatically installed to open the HTTP port. Commands ======== `lacme account` [`--tos-agreed`] [`--register`] [*CONTACT* …] : Register (if `--registered` is set) a [`lacme-accountd`(1)]-managed account key. A list of *CONTACT* information (such as `maito:` URIs) can be specified in order for the [ACME] server to contact the client for issues related to this registration (such as notifications about server-initiated revocations). `--tos-agreed` indicates agreement with the [ACME] server's Terms of Service (and might be required for registration). If the account key is already registered, update the contact info with the given list of *CONTACT* information. Upon success, `lacme` prints the new or updated Account Object from the [ACME] server. `lacme newOrder` [`--config-certs=`*FILE*] [`--min-days=`*INT*|`--force`] [*SECTION* …] : Read the certificate configuration *FILE* (see the **[certificate configuration file](#certificate-configuration-file)** section below for the configuration options), and request new Certificate Issuance for each of its sections (or the given list of *SECTION*s). Command alias: `new-order`. The flag `--force` is an alias for `--min-days=-1`, which forces renewal regardless of the expiration date of existing certificates. `lacme` `revokeCert` *FILE* [*FILE* …] : Request that the given certificate(s) *FILE*(s) be revoked. For this command, [`lacme-accountd`(1)] can be pointed to either the account key or the certificate key. Command alias: `revoke-cert`. Generic settings ================ `--config=`*filename* : Use *filename* as configuration file instead of `%E/lacme/lacme.conf`. The value is subject to [%-specifier expansion](#percent-specifiers). See the **[configuration file](#configuration-file)** section below for the configuration options. `--socket=`*path* : Use *path* as the [`lacme-accountd`(1)] UNIX-domain socket to connect to for signature requests from the [ACME] client. The value is subject to [%-specifier expansion](#percent-specifiers). `lacme` aborts if *path* exists or if its parent directory is writable by other users. Default: `%t/S.lacme`. This command-line option overrides the *socket* setting of the [`[client]` section](#client-section) of the configuration file; it also causes the [`[accountd]` section](#accountd-section) to be ignored. `-h`, `--help` : Display a brief help and exit. `-q`, `--quiet` : Be quiet. `--debug` : Turn on debug mode. Configuration file ================== Valid settings are: Default section --------------- *config-certs* : For certificate issuances (`newOrder` command), specify the space-separated list of certificate configuration files or directories to use (see the **[certificate configuration file](#certificate-configuration-file)** section below for the configuration options). Each item in that list is independently subject to [%-specifier expansion](#percent-specifiers). Paths not starting with `/` (after %-expansion) are relative to the parent directory of the **[configuration filename](#configuration-file)**. The list of files and directories is processed in the specified order, with the later items taking precedence. Files in a directory are processed in lexicographic order, only considering the ones with suffix `.conf`. Default: `lacme-certs.conf lacme-certs.conf.d/`. `[client]` section ------------------ This section is used for configuring the [ACME] client (which takes care of [ACME] commands and dialogues with the remote [ACME] server). *socket* : See `--socket=`. *user* : The username to drop privileges to (setting both effective and real uid). Skip privilege drop if the value is empty (not recommended). Default: `@@lacme_client_user@@`. *group* : The groupname to drop privileges to (setting both effective and real gid, and also setting the list of supplementary gids to that single group). Skip privilege drop if the value is empty (not recommended). Default: `@@lacme_client_group@@`. *command* : The [ACME] client command. It is split on whitespace, with the first item being the command to execute, the second its first argument etc. (Note that `lacme` might append more arguments when executing the command internally.) Default: `@@libexecdir@@/lacme/client`. *server* : Root URI of the [ACME] server. Default: `@@acmeapi_server@@`. *timeout* : Timeout in seconds after which the client stops polling the [ACME] server and considers the request failed. Default: `30`. *SSL_verify* : Whether to verify the server certificate chain. Default: `Yes`. *SSL_version* : Specify the version of the SSL protocol used to transmit data. *SSL_cipher_list* : Specify the cipher list for the connection, see [`ciphers`(1ssl)] for more information. `[webserver]` section --------------------- This section is used to configure how [ACME] challenge responses are served during certificate issuance. *listen* : Comma- or space-separated list of addresses to listen on. Valid addresses are of the form `IPV4:PORT`, `[IPV6]:PORT` (where the `:PORT` suffix is optional and defaults to the HTTP port 80), or an absolute path of a UNIX-domain socket (created with mode `0666`). Default: `@@runstatedir@@/lacme-www.socket`. **Note**: The default value is only suitable when an external HTTP daemon is publicly reachable and passes all ACME challenge requests to the webserver component through the UNIX-domain socket `@@runstatedir@@/lacme-www.socket` (for instance using the provided `@@sysconfdir@@/lacme/apache2.conf` or `@@sysconfdir@@/lacme/nginx.conf` configuration snippets for each virtual host requiring authorization). If there is no HTTP daemon bound to port 80 one needs to set *listen* to `[::]` (or `0.0.0.0 [::]` when dual IPv4/IPv6 stack is disabled or unavailable), and possibly also set *iptables* to `Yes`. *challenge-directory* : Directory under which an external HTTP daemon is configured to serve `GET` requests for challenge files under `/.well-known/acme-challenge/` (for each virtual host requiring authorization) as static files. The directory _must_ exist beforehand, _must_ be empty, and the lacme client user (by default `@@lacme_client_user@@`) needs to be able to create files under it. This setting is required when *listen* is empty. Moreover its value is subject to [%-specifier expansion](#percent-specifiers) _before_ privilege drop. *user* : The username to drop privileges to (setting both effective and real uid). Skip privilege drop if the value is empty (not recommended). Default: `@@lacme_www_user@@`. *group* : The groupname to drop privileges to (setting both effective and real gid, and also setting the list of supplementary gids to that single group). Skip privilege drop if the value is empty (not recommended). Default: `@@lacme_www_group@@`. *command* : The [ACME] webserver command. It is split on whitespace, with the first item being the command to execute, the second its first argument etc. (Note that `lacme` might append more arguments when executing the command internally.) A separate process is spawned for each address to *listen* on. (In particular no webserver process is forked when the *listen* setting is empty.) Default: `@@libexecdir@@/lacme/webserver`. *iptables* : Whether to automatically install temporary [`iptables`(8)] rules to open the `ADDRESS[:PORT]` specified with *listen*. The rules are automatically removed once `lacme` exits. This setting is ignored when *challenge-directory* is set. Default: `No`. `[accountd]` section --------------------- This section is used for configuring the [`lacme-accountd`(1)] child process. If the section (including its header) is absent or commented out, or if the CLI option `--socket` is specified, then `lacme` connects to an existing [`lacme-accountd`(1)] process via the specified UNIX-domain socket. *user* : The username to drop privileges to (setting both effective and real uid). Skip privilege drop if the value is empty (the default). *group* : The groupname to drop privileges to (setting both effective and real gid, and also setting the list of supplementary gids to that single group). Skip privilege drop if the value is empty (the default). *command* : The [`lacme-accountd`(1)] command. It is split on whitespace, with the first item being the command to execute, the second its first argument etc. (Note that `lacme` appends more arguments when executing the command internally.) Each item in that list is independently subject to [%-specifier expansion](#percent-specifiers) _after_ privilege drop. Default: `@@bindir@@/lacme-accountd`. Use for instance `` `ssh -T lacme@account.example.net lacme-accountd` `` in order to spawn a remote [`lacme-accountd`(1)] server. *config* : Path to the [`lacme-accountd`(1)] configuration file. Note that the value might be subject to %-expansion by [`lacme-accountd`(1)]. *quiet* : Be quiet. Possible values: `Yes`/`No`. Certificate configuration file ============================== For certificate issuances (`newOrder` command), a separate file is used to configure paths to the certificate and key, as well as the subject, subjectAltName, etc. to generate Certificate Signing Requests. Each section denotes a separate certificate issuance. Valid settings are: *certificate* : Where to store the issued certificate (in PEM format). At least one of *certificate* or *certificate-chain* is required. *certificate-chain* : Where to store the issued certificate along with its chain of trust (in PEM format). At least one of *certificate* or *certificate-chain* is required. *certificate-key* : Path to the service's private key. This setting is required. The [`genpkey`(1ssl)] command can be used to generate a new service RSA key: $ install -vm0600 /dev/null /path/to/service.rsa.key $ openssl genpkey -algorithm RSA -out /path/to/service.rsa.key Alternatively, for an ECDSA key using the NIST P-256 curve: $ install -vm0600 /dev/null /path/to/service.ecdsa.key $ openssl genpkey -algorithm EC -out /path/to/service.ecdsa.key \ -pkeyopt ec_paramgen_curve:P-256 \ -pkeyopt ec_param_enc:named_curve `lacme` supports any key algorithm than the underlying libssl (OpenSSL) version is able to manipulate, but the [ACME] server might reject CSRs associated with private keys of deprecated and/or “exotic” algorithms. For a dual cert setup (for instance RSA+ECDSA), duplicate the certificate section and use a distinct *certificate-key* resp. *certificate* (or *certificate-chain*) value for each key algorithm. *min-days* : For an existing certificate, the minimum number of days before its expiration date the section is considered for re-issuance. A negative value forces reissuance, while the number `0` limits reissuance to expired certificates. Default: the value of the CLI option `--min-days`, or `21` if there is no such option. *subject* : Subject field of the Certificate Signing Request, in the form `/type0=value0/type1=value1/type2=…`. This setting is required. *subjectAltName* : Comma-separated list of Subject Alternative Names, in the form `type0:value1,type1:value1,type2:…` The only `type` currently supported is `DNS`, to specify an alternative domain name. *CAfile* : Path to the bundle of trusted issuer certificates. This is used for validating each certificate after issuance or renewal. Specifying an empty value skips certificate validation. Default: `@@datadir@@/lacme/ca-certificates.crt`. *hash* : Message digest to sign the Certificate Signing Request with, overriding the [`req`(1ssl)] default. *keyUsage* : Comma-separated list of Key Usages, for instance `digitalSignature, keyEncipherment`, to include in the Certificate Signing Request. See [`x509v3_config`(5ssl)] for a list of possible values. Note that the ACME server might override the value provided here. *tlsfeature* : Comma-separated list of [TLS extension][TLS Feature extension] identifiers, such as `status_request` for OCSP Must-Staple. See [`x509v3_config`(5ssl)] for a list of possible values. Note that the ACME server might override the value provided here. *owner*, *chown* : An optional `username[:groupname]` to chown the issued *certificate* and *certificate-chain* to. *mode*, *chmod* : An optional octal mode to chmod the issued *certificate* and *certificate-chain* to. By default the files are created with mode 0644 minus umask restrictions. *notify* : Command to pass the the system's command shell (`` `/bin/sh -c` ``) after successful installation of the *certificate* and/or *certificate-chain*. %-specifiers {#percent-specifiers} ============ Some CLI options and configuration settings are subject to %-expansion for the following specifiers. Check the documentation of each setting to see which ones are affected. ---- ------------------------------------------------------------------ `%C` `@@localstatedir@@/cache` for the root user, and `$XDG_CACHE_HOME` for other users (or `$HOME/.cache` if the `XDG_CACHE_HOME` environment variable is unset or empty). `%E` `@@sysconfdir@@` for the root user, and `$XDG_CONFIG_HOME` for other users (or `$HOME/.config` if the `XDG_CONFIG_HOME` environment variable is unset or empty). `%g` Current group name. `%G` Current group ID. `%h` Home directory of the current user. `%t` `@@runstatedir@@` for the root user, and `$XDG_RUNTIME_DIR` for other users. Non-root users may only use `%t` when the `XDG_RUNTIME_DIR` environment variable is set to a non-empty value. `%T` `$TMPDIR`, or `/tmp` if the `TMPDIR` environment variable is unset or empty. `%u` Current user name. `%U` Current user ID. `%%` A literal `%`. ---- ------------------------------------------------------------------ Examples ======== $ sudo lacme account --register --tos-agreed mailto:noreply@example.com $ sudo lacme newOrder $ sudo lacme revokeCert /path/to/service.crt Automatic renewal can be scheduled via [`crontab`(5)] or [`systemd.timer`(5)]. In order to avoid deploying a single account key onto multiple nodes and/or dealing with multiple account keys, one can install a single [`lacme-accountd`(1)] instance on a dedicated host, generate a single account key there (and keep it well), and set the following in the [`[accountd]` section](#accountd-section): command = ssh -T lacme@account.example.net lacme-accountd If the user running `lacme` can connect to `lacme@account.example.net` using (passwordless) key authentication, this setting will spawn a remote [`lacme-accountd`(1)] and use it to sign [ACME] requests. Further hardening can be achieved by means of [`authorized_keys`(5)] restrictions: restrict,from="…",command="/usr/bin/lacme-accountd --quiet --stdio" ssh-rsa … See also ======== [`lacme-accountd`(1)] [ACME]: https://tools.ietf.org/html/rfc8555 [TLS Feature extension]: https://tools.ietf.org/html/rfc7633 [`lacme-accountd`(1)]: lacme-accountd.1.html [`iptables`(8)]: https://linux.die.net/man/8/iptables [`ciphers`(1ssl)]: https://www.openssl.org/docs/manmaster/man1/openssl-ciphers.html [`x509v3_config`(5ssl)]: https://www.openssl.org/docs/manmaster/man5/x509v3_config.html [`genpkey`(1ssl)]: https://www.openssl.org/docs/manmaster/man1/openssl-genpkey.html [`req`(1ssl)]: https://www.openssl.org/docs/manmaster/man1/openssl-req.html [`crontab`(5)]: https://linux.die.net/man/5/crontab [`systemd.timer`(5)]: https://www.freedesktop.org/software/systemd/man/systemd.timer.html [`authorized_keys`(5)]: https://man.openbsd.org/sshd.8#AUTHORIZED_KEYS_FILE_FORMAT lacme-0.8.3/pandoc2man.jq000077500000000000000000000010501463261126600151670ustar00rootroot00000000000000#!/usr/bin/jq -f def fixheaders: if .t == "Header" then .c[2][] |= (if .t == "Str" then .c |= ascii_upcase else . end) else . end; def fixlinks: if type == "object" then if .t == "Link" then if .c[2][0][0:7] == "mailto:" then . else .c[1][] end else map_values(fixlinks) end else if type == "array" then map(fixlinks) else . end end; { "pandoc-api-version" , meta , blocks: .blocks | map(fixheaders | fixlinks) } lacme-0.8.3/snippets/000077500000000000000000000000001463261126600144575ustar00rootroot00000000000000lacme-0.8.3/snippets/apache2-static.conf000066400000000000000000000011041463261126600201120ustar00rootroot00000000000000# Use Apache2 to serve ACME requests directly. # This snippet requires setting challenge-directory = /var/www/acme-challenge # in /etc/lacme/lacme.config, and creating this file with write # permissions for the lacme client user. # # This file needs to be sourced to the server directives (at least the # non-ssl one) of each virtual host requiring authorization. Alias /.well-known/acme-challenge/ /var/www/acme-challenge/ Options none AllowOverride none Require all granted lacme-0.8.3/snippets/apache2.conf000066400000000000000000000007451463261126600166370ustar00rootroot00000000000000# Use Apache2 to proxy ACME requests to a locally-bound lacme webserver. # # This file needs to be sourced to the server directives (at least the # non-ssl one) of each virtual host requiring authorization. # Alternatively, run `a2enconf lacme` and reload apache2. ProxyPass unix://@@runstatedir@@/lacme-www.socket|http://localhost/.well-known/acme-challenge/ Require all granted lacme-0.8.3/snippets/nginx-static.conf000066400000000000000000000010441463261126600177350ustar00rootroot00000000000000# Use Nginx to serve ACME requests directly. # This snippet requires setting challenge-directory = /var/www/acme-challenge # in /etc/lacme/lacme.config, and creating this file with write # permissions for the lacme client user. # # One of the nginx*.conf file needs to be sourced to the server # directives (at least the non-ssl one) of each virtual host requiring # authorization. location ^~ /.well-known/acme-challenge/ { alias /var/www/acme-challenge/; default_type application/jose+json; disable_symlinks on; autoindex off; } lacme-0.8.3/snippets/nginx.conf000066400000000000000000000005141463261126600164510ustar00rootroot00000000000000# Use Nginx to proxy ACME requests to a locally-bound lacme webserver. # # One of the nginx*.conf file needs to be sourced to the server # directives (at least the non-ssl one) of each virtual host requiring # authorization. location ^~ /.well-known/acme-challenge/ { proxy_pass http://unix:@@runstatedir@@/lacme-www.socket; } lacme-0.8.3/test000077500000000000000000000212541463261126600135230ustar00rootroot00000000000000#!/bin/bash #---------------------------------------------------------------------- # ACME client written with process isolation and minimal privileges in mind # (test suite) # Copyright © 2015-2021 Guilhem Moulin # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . #---------------------------------------------------------------------- set -ue PATH="/usr/bin:/bin" export PATH usage() { local rv="${1-0}" echo "Usage: $0 [--deb|--dev] [TEST..]" >&2 exit $rv } # Setup: for any subdomain under $DOMAINNAME, # http://$subdomain.$DOMAINNAME/.well-known/acme-challenge/$challenge # must be routed to this machine. # This can be done with a wildcard DNS record and opening tcp/80 in firewall. DOMAINNAME="lacme-test.guilhem.org" ACMEAPI_SERVER="https://acme-staging-v02.api.letsencrypt.org/directory" MODE="dev" DISTRIBUTION="sid" BUILDDIR="build/test" while [ $# -gt 0 ]; do case "$1" in --deb) MODE="deb"; shift;; --dev) MODE="dev"; shift;; --help|-h) usage 0;; -*) echo "Error: Unknown option $1" >&2; usage 1;; --) shift; break;; *) break; esac done cd "$(dirname -- "$0")" declare -a TESTS=() if [ $# -eq 0 ]; then # always start with registration, the account key might be new TESTS+=( "register" ) for t in tests/*; do if [ "$t" != "tests/register" ] && [ "${t#tests/account-encrypted-}" = "$t" ] && [ -f "$t" ]; then # skip registration and non-interactive tests TESTS+=( "${t#tests/}" ) fi done else for t in "$@"; do t="${t#tests/}" if [ -f "tests/$t" ]; then TESTS+=( "$t" ) else echo "Error: '$t': no such test" >&2 exit 1 fi done fi if [ "$MODE" = "deb" ]; then DISTRIBUTION="$(dpkg-parsechangelog -S Distribution)" [ "$DISTRIBUTION" != "UNRELEASED" ] || DISTRIBUTION="sid" PKG_DESTDIR="${XDG_CACHE_HOME:-"$HOME/.cache"}/build-area" fi ACCOUNT_KEY="$BUILDDIR/account.key" mkdir -pv -- "$BUILDDIR" if [ ! -f "$ACCOUNT_KEY" ]; then # keep the account key (up to `make clean`) to avoid hitting # rate-liming -- currently 50 registrations per 3h per IP, see # https://letsencrypt.org/docs/staging-environment/ echo "Generating account key $ACCOUNT_KEY..." >&2 openssl genpkey -algorithm RSA -out "$ACCOUNT_KEY" fi ARCH="$(dpkg-architecture -qDEB_BUILD_ARCH)" CHROOT="" cleanup() { if [ -n "$CHROOT" ]; then schroot -c "$CHROOT" -e fi } trap cleanup EXIT INT TERM run() { local t="tests/$1" rootdir version sub if [ ! -f "$t" ]; then echo "Error: '$1': no such test" >&2 exit 1 fi # Don't need to rebuild for each test, but editing the code at the # same time might cause `make install` to rebuild a wrong version make all -- \ BUILDDIR="$BUILDDIR" \ DESTDIR="" \ exec_prefix="/usr" \ datadir="/usr/share" \ runstatedir="/run" \ lacme_www_user=_lacme-www \ lacme_www_group=nogroup \ lacme_client_user=_lacme-client \ lacme_client_group=nogroup \ acmeapi_server="$ACMEAPI_SERVER" CHROOT="$(schroot -c "$DISTRIBUTION-$ARCH-sbuild" -b)" rootdir="/run/schroot/mount/$CHROOT" if [ "$MODE" = "deb" ]; then version="$(dpkg-parsechangelog -S Version)" echo "Installing lacme $version into $CHROOT..." >&2 install -vt "$rootdir/dev/shm" -m0644 -- \ "$PKG_DESTDIR/lacme_${version}_all.deb" \ "$PKG_DESTDIR/lacme-accountd_${version}_all.deb" sudo schroot -d"/" -c "$CHROOT" -r -- \ env DEBIAN_FRONTEND="noninteractive" apt install -y \ "/dev/shm/lacme_${version}_all.deb" \ "/dev/shm/lacme-accountd_${version}_all.deb" elif [ "$MODE" = "dev" ]; then echo "Installing lacme dev into $CHROOT..." >&2 sudo make install -- \ BUILDDIR="$BUILDDIR" \ DESTDIR="$rootdir" \ exec_prefix="$rootdir/usr" \ datadir="$rootdir/usr/share" \ runstatedir="$rootdir/run" sudo schroot -d"/" -c "$CHROOT" -r -- \ env DEBIAN_FRONTEND="noninteractive" apt install -y \ adduser \ libconfig-tiny-perl \ libcrypt-openssl-rsa-perl \ libjson-perl \ libnet-ssleay-perl \ libtimedate-perl \ libwww-perl \ openssl sudo schroot -d"/" -c "$CHROOT" -r -- \ adduser --force-badname --system \ --home /nonexistent --no-create-home \ --gecos "lacme www user" \ --quiet _lacme-www sudo schroot -d"/" -c "$CHROOT" -r -- \ adduser --force-badname --system \ --home /nonexistent --no-create-home \ --gecos "lacme client user" \ --quiet _lacme-client fi # set up staging environment, see https://letsencrypt.org/docs/staging-environment/ sudo install -oroot -groot -m0644 -vt "$rootdir/usr/share/lacme" certs-staging/*.pem sudo install -oroot -groot -m0644 -vT "$BUILDDIR/certs-staging/ca-certificates.crt" \ "$rootdir/usr/share/lacme/ca-certificates.crt" sudo schroot -d"/" -c "$CHROOT" -r -- \ sed -ri "0,/^#?server\\s*=.*/ {s||server = $ACMEAPI_SERVER|}" /etc/lacme/lacme.conf # install account key and configure lacme accordingly sudo install -oroot -groot -m0600 -vT -- "$BUILDDIR/account.key" \ "$rootdir/etc/lacme/account.key" sudo schroot -d"/" -c "$CHROOT" -r -- \ sed -ri '0,\|^#?privkey\s*=.*| {s||privkey = file:/etc/lacme/account.key|}' \ /etc/lacme/lacme-accountd.conf # use lacme's internal webserver bound to INADDR_ANY port 80 sudo schroot -d"/" -c "$CHROOT" -r -- \ sed -ri 's|^#?listen\s*=.*|listen = 0.0.0.0|' /etc/lacme/lacme.conf # use a sample lacme-certs.conf, with a random subdomain so we can # verify that challenges are answered correctly sub="$(head -c10 /dev/urandom | base32 -w0)" sudo tee "$rootdir/etc/lacme/lacme-certs.conf.d/simpletest-rsa.conf" >/dev/null <<- EOF [simpletest-rsa] certificate-key = /etc/lacme/simpletest.rsa.key certificate-chain = /etc/lacme/simpletest.rsa.crt subject = /CN=${sub,,[A-Z]}.$DOMAINNAME EOF sudo schroot -d"/" -c "$CHROOT" -r -- \ openssl genpkey -algorithm RSA -out /etc/lacme/simpletest.rsa.key # copy test wrapper and unit file local testdir="/dev/shm/lacme.test" sudo install -oroot -groot -m0700 -d -- "$rootdir$testdir" sudo install -oroot -groot -m0755 -T -- /dev/stdin "$rootdir$testdir/run" <<-EOF STDERR="$testdir/stderr" touch "\$STDERR" fail() { set +x local rv=\$? i if [ \$rv -eq 0 ]; then rv=1; fi if [ -s "\$STDERR" ]; then echo "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv" cat <"\$STDERR" >&2 echo "^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" fi [ \$# -eq 0 ] || echo "Error: \$*" >&2 exit \$rv } grepstderr() { grep "\$@" <"\$STDERR" || fail } ngrepstderr() { ! grep "\$@" <"\$STDERR" || fail } set -x EOF sudo tee -a "$rootdir$testdir/run" >/dev/null <"$t" sudo schroot -d"/" -c "$CHROOT" -r -- env -i \ USER="root" \ HOME="/root" \ SHELL="/bin/sh" \ LOGNAME="root" \ TERM="$TERM" \ PATH="/usr/sbin:/usr/bin:/sbin:/bin" \ DOMAINNAME="$DOMAINNAME" \ sh -ue "$testdir/run" || return $? } RV=0 declare -a PASSED=() FAILED=() for t in "${TESTS[@]}"; do run "$t" && rv=0 || rv=$? if [ -n "$CHROOT" ]; then # clean up schroot -c "$CHROOT" -e CHROOT="" fi if [ $rv -eq 0 ]; then PASSED+=( "$t" ) else FAILED+=( "$t" ) RV=$rv break # stop at the first failure fi done echo >&2 echo "================================================================================" >&2 echo "PASSED: ${PASSED[*]:-"(none)"}" >&2 if [ ${#FAILED[@]} -gt 0 ]; then echo "FAILED: ${FAILED[*]}" >&2 fi exit $RV lacme-0.8.3/tests/000077500000000000000000000000001463261126600137545ustar00rootroot00000000000000lacme-0.8.3/tests/account-encrypted-gpg000066400000000000000000000011061463261126600200770ustar00rootroot00000000000000# GnuPG-encrypted account key (WARN: this test is not interactive) PASSPHRASE="test" DEBIAN_FRONTEND="noninteractive" apt install -y --no-install-recommends gpg gpg-agent gpg --batch --passphrase "$PASSPHRASE" --quick-generate-key "nobody " keyid="$(gpg --list-secret-key --with-colons | grep -m1 ^fpr: | cut -sd: -f10)" gpg --encrypt -r "$keyid" /etc/lacme/account.key sed -ri '0,\|^#?privkey\s*=.*| {s||privkey = gpg:/etc/lacme/account.key.gpg|}' /etc/lacme/lacme-accountd.conf export GPG_TTY="$(tty)" TERM="linux" lacme account # vim: set filetype=sh : lacme-0.8.3/tests/account-encrypted-openssl000066400000000000000000000005601463261126600210100ustar00rootroot00000000000000# OpenSSL-encrypted account key (WARN: this test is not interactive) PASSPHRASE="test" openssl rsa -in /etc/lacme/account.key -out /etc/lacme/account.enc.key -aes128 -passout pass:"$PASSPHRASE" sed -ri '0,\|^#?privkey\s*=.*| {s||privkey = file:/etc/lacme/account.enc.key|}' /etc/lacme/lacme-accountd.conf export TERM="linux" lacme account # vim: set filetype=sh : lacme-0.8.3/tests/accountd000066400000000000000000000073261463261126600155070ustar00rootroot00000000000000# Use a separate accountd server process adduser --disabled-password \ --home /home/lacme-account \ --gecos "lacme account user" \ --quiet lacme-account # non-existent parent directory ! lacme --socket="/nonexistent/S.lacme" account 2>"$STDERR" || fail grepstderr -Fxq "Error: stat(/nonexistent): No such file or directory" # word-writable parent directory ! lacme --socket="/tmp/S.lacme" account 2>"$STDERR" || fail grepstderr -Fxq "Error: Insecure permissions on /tmp" # missing socket SOCKET=~lacme-account/S.lacme ! lacme --socket="$SOCKET" account 2>"$STDERR" || fail grepstderr -Fxq "Can't stat $SOCKET: No such file or directory (Is lacme-accountd running?)" ####################################################################### # missing configuration at default location ! runuser -u lacme-account -- lacme-accountd --debug 2>"$STDERR" || fail grepstderr -Fxq "Ignoring missing configuration file at default location /home/lacme-account/.config/lacme/lacme-accountd.conf" grepstderr -Fxq "Error: 'privkey' is not specified" install -olacme-account -glacme-account -Ddm0700 -- \ ~lacme-account/.config/lacme ~lacme-account/.local/share/lacme mv -t ~lacme-account/.config/lacme /etc/lacme/account.key chown lacme-account: ~lacme-account/.config/lacme/account.key cat >~lacme-account/.config/lacme/lacme-accountd.conf <<-EOF privkey = file:%E/lacme/account.key logfile = %h/.local/share/lacme/accountd.log EOF # non-existent parent directory ! runuser -u lacme-account -- lacme-accountd --socket="/nonexistent/S.lacme" 2>"$STDERR" || fail grepstderr -Fxq "Error: stat(/nonexistent): No such file or directory" # word-writable parent directory ! runuser -u lacme-account -- lacme-accountd --socket="%T/S.lacme" account 2>"$STDERR" || fail grepstderr -Fxq "Error: Insecure permissions on /tmp" # unset XDG_RUNTIME_DIR ! runuser -u lacme-account -- lacme-accountd 2>"$STDERR" || fail grepstderr "Error: Undefined expansion %t in \"%t/S.lacme\"" # non-existent $XDG_RUNTIME_DIR ! runuser -u lacme-account -- env XDG_RUNTIME_DIR="/nonexistent" lacme-accountd 2>"$STDERR" || fail grepstderr -Fxq "Error: stat(/nonexistent): No such file or directory" # test running accountd runuser -u lacme-account -- env XDG_RUNTIME_DIR=/home/lacme-account lacme-accountd --debug 2>"$STDERR" & PID=$! sleep 1 kill $PID || fail wait || fail grepstderr -Fxq "Using configuration file: /home/lacme-account/.config/lacme/lacme-accountd.conf" grepstderr -Fxq "Starting lacme Account Key Manager at /home/lacme-account/S.lacme" # make sure errors are logged too grep -F "Error: " ~lacme-account/.local/share/lacme/accountd.log # rotate the log and start accountd rm -f ~lacme-account/.local/share/lacme/accountd.log runuser -u lacme-account -- lacme-accountd --socket="$SOCKET" --quiet & PID=$! sleep 1 # run lacme(8) multiple times using that single lacme-accountd(1) instance lacme --socket="$SOCKET" --debug account 2>"$STDERR" || fail grepstderr -F "Received extra greeting data from accountd:" lacme --socket="$SOCKET" newOrder 2>"$STDERR" || fail test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key # terminate accountd and check that it removes the socket kill $PID wait ! test -e "$SOCKET" # ensure signature requests are logged grep -Fq "Starting lacme Account Key Manager at /home/lacme-account/S.lacme" ~lacme-account/.local/share/lacme/accountd.log grep -Fq "[0] Accepted new connection" ~lacme-account/.local/share/lacme/accountd.log grep -Fq "[1] Accepted new connection" ~lacme-account/.local/share/lacme/accountd.log grep -Fq "Shutting down and closing lacme Account Key Manager" ~lacme-account/.local/share/lacme/accountd.log grep -F "] SIGNED header=base64url({" ~lacme-account/.local/share/lacme/accountd.log # vim: set filetype=sh : lacme-0.8.3/tests/accountd-kid000066400000000000000000000045001463261126600162430ustar00rootroot00000000000000# Hide JWK from ACME client and pass KID instead # get the key ID lacme account 2>"$STDERR" || fail keyid="$(sed -n "/^Key ID: / {s///p;q}" <"$STDERR")" # prepare accountd adduser --disabled-password \ --home /home/lacme-account \ --gecos "lacme account user" \ --quiet lacme-account install -olacme-account -glacme-account -Ddm0700 -- \ ~lacme-account/.config/lacme ~lacme-account/.local/share/lacme mv -t ~lacme-account/.config/lacme /etc/lacme/account.key chown lacme-account: ~lacme-account/.config/lacme/account.key cat >~lacme-account/.config/lacme/lacme-accountd.conf <<-EOF privkey = file:%E/lacme/account.key logfile = %h/.local/share/lacme/accountd.log keyid = $keyid EOF SOCKET=~lacme-account/S.lacme runuser -u lacme-account -- lacme-accountd --socket="$SOCKET" --quiet & PID=$! sleep 1 # newAccount resource fails as per RFC 8555 sec. 6.2 it requires a JWK ! lacme --socket="$SOCKET" account 2>"$STDERR" || fail grepstderr -Fxq "Warning: lacme-accountd supplied an empty JWK; try removing 'keyid' setting from lacme-accountd.conf if the ACME resource request fails." grepstderr -Fxq "400 Bad Request (Parse error reading JWS)" grep -F "] SIGNED header=base64url({" ~lacme-account/.local/share/lacme/accountd.log >/tmp/signed ! grep -vF "] SIGNED header=base64url({\"alg\":\"RS256\",\"jwk\":{}," "$STDERR" || fail grepstderr -Fxq "Revoking /etc/lacme/simpletest.rsa.crt" grepstderr -Fq "400 Bad Request (unable to revoke" grepstderr -Fxq "Warning: Couldn't revoke /etc/lacme/simpletest.rsa.crt" kill $PID wait # make sure all signing requests have a KID grep -F "] SIGNED header=base64url({" ~lacme-account/.local/share/lacme/accountd.log >/tmp/signed ! grep -vF "] SIGNED header=base64url({\"alg\":\"RS256\",\"kid\":\"$keyid\"," ~root/.ssh/known_hosts cat >/etc/ssh/sshd_config <<-EOF Port 2222 ListenAddress 127.0.0.1 ChallengeResponseAuthentication no PasswordAuthentication no UsePAM yes EOF install -oroot -groot -dm0755 /run/sshd /usr/sbin/sshd sed -ri 's|^#?command\s*=.*/lacme-accountd$|command = ssh -Tp2222 -llacme-account 127.0.0.1 lacme-accountd|' /etc/lacme/lacme.conf sed -ri 's|^#?config\s*=.*|config = /etc/lacme/lacme-accountd.conf|' /etc/lacme/lacme.conf lacme newOrder --debug 2>"$STDERR" || fail # intentionally use --debug, ssh should tunnel stdin + stdout + stderr test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key # and now with an authorized_keys(5) restriction sed -ri "s|^[^#]|restrict,from=\"127.0.0.1\",command=\"/usr/bin/lacme-accountd --quiet --stdio\" &|" ~lacme-account/.ssh/authorized_keys rm -vf /etc/lacme/simpletest.rsa.crt ! lacme newOrder 2>"$STDERR" || fail # --config= (and --debug) should be ignored grepstderr -Fxq "Error: 'privkey' is not specified" grepstderr -Fxq "[simpletest-rsa] Error: Couldn't issue X.509 certificate!" install -olacme-account -glacme-account -Ddm0700 -- \ ~lacme-account/.config/lacme ~lacme-account/.local/share/lacme mv -t ~lacme-account/.config/lacme /etc/lacme/account.key cat >~lacme-account/.config/lacme/lacme-accountd.conf <<-EOF privkey = file:%E/lacme/account.key logfile = %h/.local/share/lacme/accountd.log EOF lacme newOrder test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key # ensure signature requests are logged grep -F "] SIGNED header=base64url({" ~lacme-account/.local/share/lacme/accountd.log # vim: set filetype=sh : lacme-0.8.3/tests/accountd-validate000066400000000000000000000030571463261126600172730ustar00rootroot00000000000000# JWS Signing Input (RFC 7515) validation # missing or empty protected header printf "\\r\\n" | lacme-accountd --stdio 2>"$STDERR" grepstderr -Fq "] NOSIGN [malformed JWS Protected Header]" printf ".foo\\r\\n" | lacme-accountd --stdio 2>"$STDERR" grepstderr -Fq "] NOSIGN [malformed JWS Protected Header]" # invalid base64url-encoded protected header printf "foo/bar.baz\\r\\n" | lacme-accountd --stdio 2>"$STDERR" grepstderr -Fq "] NOSIGN [malformed JWS Protected Header]" # missing payload printf "foo\\r\\n" | lacme-accountd --stdio 2>"$STDERR" grepstderr -Fq "] NOSIGN [malformed JWS Payload]" # invalid base64url-encoded payload printf "foo.bar/baz\\r\\n" | lacme-accountd --stdio 2>"$STDERR" grepstderr -Fq "] NOSIGN [malformed JWS Payload]" # invalid JWS Protected Header: not a JSON object; missing fields "alg", # "nonce", "url", or either "jwk" or "kid" for s in "null" "\"str\"" "{}" "{\"alg\":\"\",\"nonce\":\"\",\"url\":\"\"}" "{\"jwk\":{}}"; do s="$(printf "%s" "$s" | base64 -w0 | sed "s/=*$//" | tr "+/" "-_")" printf "%s.\\r\\n" "$s" | lacme-accountd --stdio 2>"$STDERR" grepstderr -F "] NOSIGN [invalid JWS Protected Header]" done # valid JWS Protected Header and Payload h="{\"alg\":\"\",\"nonce\":\"\",\"url\":\"\",\"jwk\":{}}" s="$(printf "%s" "$h" | base64 -w0 | sed "s/=*$//" | tr "+/" "-_")" p="$(printf "%s" "JWS Payload" | base64 -w0 | sed "s/=*$//" | tr "+/" "-_")" printf "%s.%s\\r\\n" "$s" "$p" | lacme-accountd --stdio 2>"$STDERR" grepstderr -F "] SIGNED header=base64url($h) playload=base64url(JWS Payload)" # vim: set filetype=sh : lacme-0.8.3/tests/apache2-proxy000066400000000000000000000027741463261126600163730ustar00rootroot00000000000000# Use Apache2 as reverse proxy for lacme's internal webserver using the # provided snippet # bind the webserver to the default listening address sed -i 's|^listen\s*=|#&|' /etc/lacme/lacme.conf DEBIAN_FRONTEND="noninteractive" apt install -y --no-install-recommends apache2 curl a2enmod proxy_http a2enconf lacme mkdir /run/apache2 ( set +eux && . /etc/apache2/envvars && apache2 ) # ensure that requests to the root URI and challenge URIs yield 502 Bad Gateway before starting the webserver rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/)"; [ $rv -eq 503 ] rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/foo)"; [ $rv -eq 503 ] lacme --debug newOrder 2>"$STDERR" || fail test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key grepstderr -Fq "Forking ACME webserver bound to /run/lacme-www.socket, child PID " grepstderr -Fq "Forking lacme-accountd, child PID " grepstderr -Fq "Forking /usr/libexec/lacme/client, child PID " grepstderr -Fq "Shutting down lacme-accountd" grepstderr -Fq "Shutting down ACME webserver bound to /run/lacme-www.socket" grepstderr -Eq "Incoming connection: GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+$" # ensure apache2 was indeed used to serve challenge responses (Let's Encrypt caches validation results) grep -E "\"GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+\" 200 .* \(([^)]+; )*Let's Encrypt validation server(; [^)]+)*\)\"$" \ /var/log/apache2/access.log # vim: set filetype=sh : lacme-0.8.3/tests/apache2-static000066400000000000000000000042751463261126600164770ustar00rootroot00000000000000# Use Nginx to directly serve ACME challenge responses using the # provided snippet # bind the webserver to the default listening address sed -i 's|^listen\s*=|#&|' /etc/lacme/lacme.conf DEBIAN_FRONTEND="noninteractive" apt install -y --no-install-recommends apache2 curl ln -fs /etc/lacme/apache2-static.conf /etc/apache2/conf-available/lacme.conf a2enmod proxy_http a2enconf lacme mkdir /run/apache2 ( set +eux && . /etc/apache2/envvars && apache2 ) # 'challenge-directory' set to a non-existent directory sed -ri 's|^#?challenge-directory\s*=.*|challenge-directory = /var/www/acme-challenge|' /etc/lacme/lacme.conf ! lacme newOrder 2>"$STDERR" || fail grepstderr -Fqx "opendir(/var/www/acme-challenge): No such file or directory" # ensure that requests to the root URI and challenge URIs respectively yield 403 Forbidden (no index) and 404 Not Found install -o_lacme-client -gwww-data -m0750 -d /var/www/acme-challenge rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/)"; [ $rv -eq 403 ] rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/foo)"; [ $rv -eq 404 ] # 'challenge-directory' set to a non-empty directory touch /var/www/acme-challenge/.stamp ! lacme newOrder 2>"$STDERR" || fail grepstderr -Fqx "Error: Refusing to use non-empty challenge directory /var/www/acme-challenge" rm -f /var/www/acme-challenge/.stamp lacme --debug newOrder 2>"$STDERR" || fail test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key ngrepstderr -Fq "Forking ACME webserver" grepstderr -Fq "Using existing webserver on /var/www/acme-challenge" grepstderr -Fq "Forking lacme-accountd, child PID " grepstderr -Fq "Forking /usr/libexec/lacme/client, child PID " grepstderr -Fq "Shutting down lacme-accountd" ngrepstderr -Fq "Shutting down ACME webserver" ngrepstderr -Eq "Incoming connection( from \S+)?: GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+$" # ensure apache2 was indeed used to serve challenge responses (Let's Encrypt caches validation results) grep -E "\"GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+\" 200 .* \(([^)]+; )*Let's Encrypt validation server(; [^)]+)*\)\"$" \ /var/log/apache2/access.log # vim: set filetype=sh : lacme-0.8.3/tests/cert-extensions000066400000000000000000000060301463261126600170300ustar00rootroot00000000000000# X509v3 certificate extension, cf. x509v3_config(5ssl) x509_check() { local cert="$1" ext out out="$(mktemp --tmpdir)" ext="basicConstraints,subjectAltName,keyUsage,extendedKeyUsage,tlsfeature" openssl x509 -in "$cert" -noout -subject -ext "$ext" -nameopt compat >"$out" diff --unified --color=auto -b --label="a/${cert#/}" --label="b/${cert#/}" -- - "$out" } # default settings (the ACME server adds a subjectAltName with the Common Name) openssl genpkey -algorithm RSA -out /etc/lacme/test1.key commonName="$(head -c10 /dev/urandom | base32 -w0 | tr "A-Z" "a-z").$DOMAINNAME" cat >"/etc/lacme/lacme-certs.conf.d/test1.conf" <<- EOF [test1] certificate-key = /etc/lacme/test1.key certificate-chain = /etc/lacme/test1.crt subject = /CN=$commonName EOF lacme newOrder test1 test /etc/lacme/test1.crt -nt /etc/lacme/test1.key x509_check /etc/lacme/test1.crt <<-EOF subject=/CN=$commonName X509v3 Key Usage: critical Digital Signature, Key Encipherment X509v3 Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication X509v3 Basic Constraints: critical CA:FALSE X509v3 Subject Alternative Name: DNS:$commonName EOF # subjectAltName openssl genpkey -algorithm RSA -out /etc/lacme/test2.key commonName="$(head -c10 /dev/urandom | base32 -w0 | tr "A-Z" "a-z").$DOMAINNAME" subjectAltName="" for i in $(seq 1 8); do subjectAltName="${subjectAltName:+"$subjectAltName "}$(head -c10 /dev/urandom | base32 -w0 | tr "A-Z" "a-z").$DOMAINNAME" done cat >"/etc/lacme/lacme-certs.conf.d/test2.conf" <<- EOF [test2] certificate-key = /etc/lacme/test2.key certificate-chain = /etc/lacme/test2.crt subject = /CN=$commonName subjectAltName = DNS:$(echo "$subjectAltName" | sed -r "s/ /, DNS:/g") EOF lacme newOrder test2 test /etc/lacme/test2.crt -nt /etc/lacme/test2.key x509_check /etc/lacme/test2.crt <<-EOF subject=/CN=$commonName X509v3 Key Usage: critical Digital Signature, Key Encipherment X509v3 Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication X509v3 Basic Constraints: critical CA:FALSE X509v3 Subject Alternative Name: DNS:$(echo "$commonName" "$subjectAltName" | tr " " "\\n" | sort -u | paste -sd" " | sed -r "s/ /, DNS:/g") EOF # tlsfeature openssl genpkey -algorithm RSA -out /etc/lacme/test3.key commonName="$(head -c10 /dev/urandom | base32 -w0 | tr "A-Z" "a-z").$DOMAINNAME" cat >"/etc/lacme/lacme-certs.conf.d/test3.conf" <<- EOF [test3] certificate-key = /etc/lacme/test3.key certificate-chain = /etc/lacme/test3.crt subject = /CN=$commonName tlsfeature = status_request EOF lacme newOrder test3 test /etc/lacme/test3.crt -nt /etc/lacme/test3.key x509_check /etc/lacme/test3.crt <<-EOF subject=/CN=$commonName X509v3 Key Usage: critical Digital Signature, Key Encipherment X509v3 Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication X509v3 Basic Constraints: critical CA:FALSE X509v3 Subject Alternative Name: DNS:$commonName TLS Feature: status_request EOF # vim: set filetype=sh : lacme-0.8.3/tests/cert-install000066400000000000000000000164041463261126600163050ustar00rootroot00000000000000# Certificate installation and post-issuance notification # at least one of 'certificate' or 'certificate-chain' is required cat >"/etc/lacme/lacme-certs.conf.d/bad1.conf" <<- EOF [bad1] certificate-key = /etc/lacme/bad1.key subject = /CN=bad1.$DOMAINNAME EOF ! lacme newOrder bad1 2>"$STDERR" || fail newOrder bad1 grepstderr -Fxq "[bad1] Warning: Missing 'certificate' and 'certificate-chain', skipping" # 'subject' is required cat >"/etc/lacme/lacme-certs.conf.d/bad2.conf" <<- EOF [bad2] certificate-key = /etc/lacme/bad2.key certificate = /etc/lacme/bad2.crt EOF ! lacme newOrder bad2 2>"$STDERR" || fail newOrder bad2 grepstderr -Fxq "[bad2] Warning: Couldn't generate CSR, skipping" # 'certificate-key' is required cat >"/etc/lacme/lacme-certs.conf.d/bad3.conf" <<- EOF [bad3] certificate = /etc/lacme/bad3.crt subject = /CN=bad3.$DOMAINNAME EOF ! lacme newOrder bad3 2>"$STDERR" || fail newOrder bad3 grepstderr -Fxq "[bad3] Warning: Couldn't generate CSR, skipping" check_spki() { local p1="$1" p2="$2" s1 s2 s1="$(openssl x509 -in "$p1" -noout -pubkey \ | openssl pkey -pubin -outform DER \ | openssl dgst -sha256 \ | sed 's/.*=\s*//')" s2="$(openssl pkey -in "$p2" -pubout -outform DER \ | openssl dgst -sha256 \ | sed 's/.*=\s*//')" if [ -n "$s1" ] && [ "$s1" = "$s2" ]; then return 0 else printf "%s != %s\\n" "$s1" "$s2" >&2 return 1 fi } check_chain() { local priv="$1" chain="$2" leaf="${3-}" pem0 csplit -f "${chain%.crt}.chain.pem" "$chain" \ "/-----BEGIN CERTIFICATE-----/" "{*}" pem0="${chain%.crt}.chain.pem00" if [ ! -s "$pem0" ]; then # 00 is empty, leaf cert is at 01 rm -f -- "$pem0" pem0="${chain%.crt}.chain.pem01" fi test -s "$pem0" || return 1 check_spki "$pem0" "$priv" if [ -n "$leaf" ]; then diff --ignore-blank-lines --unified "$pem0" "$leaf" || return 1 fi leaf="${chain%.crt}.leaf.pem" mv -T -- "$pem0" "$leaf" intermediates="${chain%.crt}.intermediates.pem" sed "/^$/d" "${chain%.crt}.chain.pem"[0-9]* >"$intermediates" test -s "$intermediates" || return 1 # ensure there is at least one intermediate openssl verify -trusted /usr/share/lacme/ca-certificates.crt \ -untrusted "$intermediates" \ -purpose sslserver -x509_strict \ -show_chain \ -- "$leaf" || return 1 } # 'certificate' installs only the leaf certificate openssl genpkey -algorithm RSA -out /etc/lacme/test1.key subject="/CN=$(head -c10 /dev/urandom | base32 -w0 | tr "A-Z" "a-z").$DOMAINNAME" cat >"/etc/lacme/lacme-certs.conf.d/test1.conf" <<- EOF [test1] certificate-key = /etc/lacme/test1.key certificate = /etc/lacme/test1.crt subject = $subject EOF lacme newOrder test1 2>"$STDERR" || fail newOrder test1 test /etc/lacme/test1.crt -nt /etc/lacme/test1.key sed -n "0,/^-----END CERTIFICATE-----$/ p" /etc/lacme/test1.crt >/etc/lacme/test1.pem diff --unified /etc/lacme/test1.crt /etc/lacme/test1.pem check_spki /etc/lacme/test1.crt /etc/lacme/test1.key # 'certificate-chain' appends the chain of trust openssl genpkey -algorithm RSA -out /etc/lacme/test2.key cat >"/etc/lacme/lacme-certs.conf.d/test2.conf" <<- EOF [test2] certificate-key = /etc/lacme/test2.key certificate-chain = /etc/lacme/test2.crt subject = $subject EOF lacme newOrder test2 2>"$STDERR" || fail newOrder test2 test /etc/lacme/test2.crt -nt /etc/lacme/test2.key check_chain /etc/lacme/test2.key /etc/lacme/test2.crt # 'certificate' + 'certificate-chain' openssl genpkey -algorithm RSA -out /etc/lacme/test3.key cat >"/etc/lacme/lacme-certs.conf.d/test3.conf" <<- EOF [test3] certificate-key = /etc/lacme/test3.key certificate = /etc/lacme/test3.pem certificate-chain = /etc/lacme/test3.crt subject = $subject EOF lacme newOrder test3 2>"$STDERR" || fail newOrder test3 test /etc/lacme/test3.pem -nt /etc/lacme/test3.key test /etc/lacme/test3.crt -nt /etc/lacme/test3.key check_chain /etc/lacme/test3.key /etc/lacme/test3.crt /etc/lacme/test3.pem st="$(stat -c "%U:%G %#a" /etc/lacme/test3.pem)" [ "$st" = "root:root 0644" ] st="$(stat -c "%U:%G %#a" /etc/lacme/test3.crt)" [ "$st" = "root:root 0644" ] # owner user openssl genpkey -algorithm RSA -out /etc/lacme/test4.key cat >"/etc/lacme/lacme-certs.conf.d/test4.conf" <<- EOF [test4] certificate-key = /etc/lacme/test4.key certificate = /etc/lacme/test4.pem certificate-chain = /etc/lacme/test4.crt owner = nonexistent-user subject = $subject EOF ! lacme newOrder test4 2>"$STDERR" || fail newOrder test4 grepstderr -Fxq "getpwnam(nonexistent-user)" ! test -e /etc/lacme/test4.pem ! test -e /etc/lacme/test4.crt sed -ri "s/^owner\\s*=.*/owner = nobody/" /etc/lacme/lacme-certs.conf.d/test4.conf lacme newOrder test4 2>"$STDERR" || fail newOrder test4 st="$(stat -c "%U:%G %#a" /etc/lacme/test4.pem)" [ "$st" = "nobody:root 0644" ] st="$(stat -c "%U:%G %#a" /etc/lacme/test4.crt)" [ "$st" = "nobody:root 0644" ] # owner user:group openssl genpkey -algorithm RSA -out /etc/lacme/test5.key cat >"/etc/lacme/lacme-certs.conf.d/test5.conf" <<- EOF [test5] certificate-key = /etc/lacme/test5.key certificate = /etc/lacme/test5.pem certificate-chain = /etc/lacme/test5.crt owner = nobody:nonexistent-group subject = $subject EOF ! lacme newOrder test5 2>"$STDERR" || fail newOrder test5 grepstderr -Fxq "getgrnam(nonexistent-group)" ! test -e /etc/lacme/test5.pem ! test -e /etc/lacme/test5.crt sed -ri "s/^owner\\s*=.*/owner = nobody:nogroup/" /etc/lacme/lacme-certs.conf.d/test5.conf lacme newOrder test5 2>"$STDERR" || fail newOrder test5 st="$(stat -c "%U:%G %#a" /etc/lacme/test5.pem)" [ "$st" = "nobody:nogroup 0644" ] st="$(stat -c "%U:%G %#a" /etc/lacme/test5.crt)" [ "$st" = "nobody:nogroup 0644" ] # umask restrictions (also test empty values) openssl genpkey -algorithm RSA -out /etc/lacme/test6.key cat >"/etc/lacme/lacme-certs.conf.d/test6.conf" <<- EOF [test6] certificate-key = /etc/lacme/test6.key certificate-chain = /etc/lacme/test6.crt certificate = mode = owner = subject = $subject EOF ( umask 0077 && lacme newOrder test6 2>"$STDERR" || fail newOrder test6 ) ! test -e /etc/lacme/test6.pem st="$(stat -c "%U:%G %#a" /etc/lacme/test6.crt)" [ "$st" = "root:root 0600" ] # mode openssl genpkey -algorithm RSA -out /etc/lacme/test7.key cat >"/etc/lacme/lacme-certs.conf.d/test7.conf" <<- EOF [test7] certificate-key = /etc/lacme/test7.key certificate = /etc/lacme/test7.pem certificate-chain = /etc/lacme/test7.crt mode = 0400 subject = $subject EOF lacme newOrder test7 2>"$STDERR" || fail newOrder test7 st="$(stat -c "%U:%G %#a" /etc/lacme/test7.pem)" [ "$st" = "root:root 0400" ] st="$(stat -c "%U:%G %#a" /etc/lacme/test7.crt)" [ "$st" = "root:root 0400" ] # post-issuance notification openssl genpkey -algorithm RSA -out /etc/lacme/test8.key cat >"/etc/lacme/lacme-certs.conf.d/test8.conf" <<- EOF [test8] certificate-key = /etc/lacme/test8.key certificate-chain = /etc/lacme/test8.crt subject = $subject notify = touch /tmp/test8.notify EOF lacme newOrder test8 2>"$STDERR" || fail newOrder test8 grepstderr -Fxq "Running notification command \`touch /tmp/test8.notify\`" test -e /tmp/test8.notify rm -f /tmp/test8.notify lacme newOrder test8 2>"$STDERR" || fail newOrder test8 ngrepstderr -Fq "Running notification command" ! test -e /tmp/test8.notify # vim: set filetype=sh : lacme-0.8.3/tests/cert-renew000066400000000000000000000015721463261126600157570ustar00rootroot00000000000000# Skip renewal for recent enough certificates lacme newOrder 2>"$STDERR" || fail grepstderr -Exq "Installing X.509 certificate chain /etc/lacme/simpletest.rsa.crt" ino1="$(stat -c%i /etc/lacme/simpletest.rsa.crt)" lacme newOrder 2>"$STDERR" || fail grepstderr -Ex "^\[simpletest-rsa\] Valid until .*, skipping" lacme newOrder --force 2>"$STDERR" || fail grepstderr -Exq "Installing X.509 certificate chain /etc/lacme/simpletest.rsa.crt" ino2="$(stat -c%i /etc/lacme/simpletest.rsa.crt)" test "$ino1" != "$ino2" # we never truncate existing certificates sed -ri 's|^#?min-days\s*=.*|min-days = 90|' /etc/lacme/lacme-certs.conf lacme newOrder 2>"$STDERR" || fail grepstderr -Exq "Installing X.509 certificate chain /etc/lacme/simpletest.rsa.crt" ino3="$(stat -c%i /etc/lacme/simpletest.rsa.crt)" test "$ino2" != "$ino3" # we never truncate existing certificates # vim: set filetype=sh : lacme-0.8.3/tests/cert-revoke000066400000000000000000000026271463261126600161340ustar00rootroot00000000000000# Certification revocation, using either the account key or the # certificate key # also check issuance for ECDSA keys openssl genpkey -algorithm EC -out /etc/lacme/simpletest.ecdsa.key \ -pkeyopt ec_paramgen_curve:P-256 \ -pkeyopt ec_param_enc:named_curve sed "s/rsa/ecdsa/" /etc/lacme/lacme-certs.conf.d/simpletest-rsa.conf > \ /etc/lacme/lacme-certs.conf.d/simpletest-ecdsa.conf # issue both RSA and ECDSA certificates lacme newOrder 2>"$STDERR" || fail newOrder test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key test /etc/lacme/simpletest.ecdsa.crt -nt /etc/lacme/simpletest.ecdsa.key # revoke the ECDSA certificate using the account key lacme revokeCert /etc/lacme/simpletest.ecdsa.crt ! lacme revokeCert /etc/lacme/simpletest.ecdsa.crt 2>"$STDERR" || fail grepstderr -Fxq "Revoking /etc/lacme/simpletest.ecdsa.crt" grepstderr -Fq "400 Bad Request (unable to revoke" grepstderr -Fxq "Warning: Couldn't revoke /etc/lacme/simpletest.ecdsa.crt" # and the RSA certificate using the service key mv -vfT /etc/lacme/simpletest.rsa.key /etc/lacme/account.key lacme revokeCert /etc/lacme/simpletest.rsa.crt ! lacme revokeCert /etc/lacme/simpletest.rsa.crt 2>"$STDERR" || fail grepstderr -Fxq "Revoking /etc/lacme/simpletest.rsa.crt" grepstderr -Fq "400 Bad Request (unable to revoke" grepstderr -Fxq "Warning: Couldn't revoke /etc/lacme/simpletest.rsa.crt" # vim: set filetype=sh : lacme-0.8.3/tests/cert-verify000066400000000000000000000031021463261126600161320ustar00rootroot00000000000000# Certificate verification DEBIAN_FRONTEND="noninteractive" apt install -y --no-install-recommends ssl-cert # add staging root certificates to the trust store to emulate the production environment for ca in /usr/share/lacme/letsencrypt-stg-root-*.pem; do ln -sT "$ca" "/usr/local/share/ca-certificates/$(basename -s.pem "$ca").crt" done update-ca-certificates # test (modified) trust store openssl verify -no-CAfile -CApath /etc/ssl/certs -show_chain /usr/share/lacme/letsencrypt-stg-root-x1.pem openssl verify -no-CApath -CAfile /etc/ssl/certs/ca-certificates.crt -show_chain /usr/share/lacme/letsencrypt-stg-root-x1.pem mv /usr/share/lacme/ca-certificates.crt /usr/share/lacme/ca-certificates.crt.back ! lacme newOrder 2>"$STDERR" || fail grepstderr -Fq "Could not open file or uri for loading trusted certificates from /usr/share/lacme/ca-certificates.crt:" grepstderr -Fxq "[simpletest-rsa] Error: Received invalid X.509 certificate from ACME server!" # verification error for unrelated CA bundle cat /etc/ssl/certs/ssl-cert-snakeoil.pem >/usr/share/lacme/ca-certificates.crt ! lacme newOrder 2>"$STDERR" || fail grepstderr -Fxq "error 20 at 1 depth lookup: unable to get local issuer certificate" grepstderr -Fxq "[simpletest-rsa] Error: Received invalid X.509 certificate from ACME server!" # use saved bundle as custom CAfile sed -ri 's|^#?CAfile\s*=.*|CAfile = /usr/share/lacme/ca-certificates.crt.back|' /etc/lacme/lacme-certs.conf lacme newOrder 2>"$STDERR" || fail test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key # vim: set filetype=sh : lacme-0.8.3/tests/drop-privileges000066400000000000000000000151351463261126600170170ustar00rootroot00000000000000# Check privilige drop: UID/GID changes, chdir, environment, and file # descriptors # ensure failure to drop privileges doesn't retain root privileges sed -ri 's/^#(user|group)\s*=\s*$/\1 = nonexistent-\1/' /etc/lacme/lacme.conf ! lacme account 2>"$STDERR" || fail grepstderr -Fxq "getgrnam(nonexistent-group)" grepstderr -Fxq "Error: Invalid client version" sed -ri 's/^group\s*=\s*nonexistent.*/#&/' /etc/lacme/lacme.conf ! lacme account 2>"$STDERR" || fail grepstderr -Fxq "getpwnam(nonexistent-user)" grepstderr -Fxq "Error: Invalid client version" # create wrapper to inspect processes STATUSDIR="/dev/shm/lacme-wrap" install -oroot -groot -m0755 /dev/stdin /run/lacme-wrap <<-EOF #!/bin/sh set -ue PATH="/usr/bin:/bin" export PATH prefix="$STATUSDIR/\${1##*[/-]}" cat "\$prefix/status" pwd >"\$prefix/cwd" stat -c "%U:%G %#a" . >"\$prefix/cwd-mod" sort -z "\$prefix/environ" ( find -P /proc/\$\$/fd -mindepth 1 \! -lname "\$0" -printf "%P %#m %U:%G %l\\n" >"\$prefix/fd" ) exec "\$@" EOF # also check privilege drop for the spawned accountd adduser --system --group \ --home /nonexistent --no-create-home \ --gecos "lacme account user" \ --quiet lacme-account sed -ri 's/^#?(user|group)\s*=\s*nonexistent.*/\1 = lacme-account/' /etc/lacme/lacme.conf chown lacme-account: /etc/lacme/account.key install -oroot -groot -dm0755 -- "$STATUSDIR" install -olacme-account -groot -dm0700 -- "$STATUSDIR/accountd" install -o_lacme-client -groot -dm0700 -- "$STATUSDIR/client" install -o_lacme-www -groot -dm0700 -- "$STATUSDIR/webserver" # test with a group that's not the primary group (nogroup) of _lacme-www etc addgroup --system nogroup2 sed -ri 's|^#?group\s*=\s*nogroup$|group = nogroup2|' /etc/lacme/lacme.conf sed -ri 's|^#?command\s*=.*/lacme-accountd$|command = /run/lacme-wrap /usr/bin/lacme-accountd|' /etc/lacme/lacme.conf sed -ri 's|^#?command\s*=.*/lacme/client$|command = /run/lacme-wrap /usr/libexec/lacme/client|' /etc/lacme/lacme.conf sed -ri 's|^#?command\s*=.*/lacme/webserver$|command = /run/lacme-wrap /usr/libexec/lacme/webserver|' /etc/lacme/lacme.conf sed -ri 's|^#?config\s*=\s*$|config = /etc/lacme/lacme-accountd.conf|' /etc/lacme/lacme.conf check_status() { local path="$STATUSDIR/$1/status" user="$2" group="$3" UID="$(getent passwd "$user" | cut -sd: -f3)" GID="$(getent group "$group" | cut -sd: -f3)" [ -n "$UID" -a -n "$GID" ] || return 1 grep -Ex "Uid:\\s+$UID\\s+$UID\\s+$UID\\s+$UID" "$path" || return 1 grep -Ex "Gid:\\s+$GID\\s+$GID\\s+$GID\\s+$GID" "$path" || return 1 grep -Ex "Groups:\s+$GID\s*" "$path" || return 1 } check_cwd() { local path="$STATUSDIR/$1/cwd" dir="$2" cwd cwd="$(cat <"$path")" || return 1 [ "$cwd" = "$dir" ] || return 1 } check_accountd() { local socket_ino stderr prefix="$STATUSDIR/accountd" check_status accountd lacme-account lacme-account || return 1 check_cwd accountd / || return 1 diff --label="a/accountd/environ" --label="b/accountd/environ" \ --color=auto --unified "$prefix/environ" - <<-EOF HOME=/nonexistent LOGNAME=lacme-account PATH=/usr/bin:/bin SHELL=/usr/sbin/nologin TERM=$TERM USER=lacme-account EOF stderr="$(readlink -e "/proc/$$/fd/2")" socket_ino="$(sed -rn '/^0 .* socket:\[([0-9]+)\]$/ {s//\1/p;q}' "$prefix/fd")" [ -n "$socket_ino" ] || return 1 grep -Fxq "0 0700 $UID:$GID socket:[$socket_ino]" "$prefix/fd" || return 1 grep -Fxq "1 0700 $UID:$GID socket:[$socket_ino]" "$prefix/fd" || return 1 grep -Fxq "2 0700 $UID:$GID $stderr" "$prefix/fd" || return 1 sed -ri '\#^[012] #d' "$prefix/fd" ! test -s "$prefix/fd" || return 1 } check_client() { local command="$1" cwd="$2" UID GID stdout stderr prefix="$STATUSDIR/client" check_status client _lacme-client nogroup2 check_cwd client "$cwd" diff --label="a/client/environ" --label="b/client/environ" \ --color=auto --unified "$prefix/environ" - <<-EOF DEBUG=0 HOME=/nonexistent LOGNAME=_lacme-client PATH=/usr/bin:/bin SHELL=/usr/sbin/nologin TERM=$TERM USER=_lacme-client EOF stdout="$(readlink -e "/proc/$$/fd/1")" stderr="$(readlink -e "/proc/$$/fd/2")" if [ "$command" = "account" ]; then # no pipe grep -Fxq "0 0500 $UID:$GID /dev/null" "$prefix/fd" || return 1 grep -Fxq "1 0700 $UID:$GID $stdout" "$prefix/fd" || return 1 elif [ "$command" = "order" ]; then grep -Exq "0 0500 $UID:$GID pipe:\[[0-9]+\]" "$prefix/fd" || return 1 grep -Exq "1 0300 $UID:$GID pipe:\[[0-9]+\]" "$prefix/fd" || return 1 else exit 1 fi grep -Fxq "2 0700 $UID:$GID $stderr" "$prefix/fd" || return 1 sed -ri '\#^[012] #d' "$prefix/fd" grep -Exq "[0-9]+ 0700 $UID:$GID socket:\[[0-9]+\]" "$prefix/fd" || return 1 sed -ri '0,\#^[0-9]+ .* socket:\[[0-9]+\]$# {//d}' "$prefix/fd" grep -Eq "^[0-9]+ 0500 $UID:$GID /tmp/lacme-client.conf\.json-" "$prefix/fd" || return 1 sed -ri '0,\#^[0-9]+ .* /tmp/lacme-client.conf\.json-# {//d}' "$prefix/fd" ! test -s "$prefix/fd" || return 1 } check_webserver() { local cwd="$1" UID GID stdout stderr prefix="$STATUSDIR/webserver" check_status webserver _lacme-www nogroup2 check_cwd webserver "$cwd" diff --label="a/webserver/environ" --label="b/webserver/environ" \ --color=auto --unified "$prefix/environ" - <<-EOF DEBUG=0 HOME=/nonexistent LOGNAME=_lacme-www PATH=/usr/bin:/bin SHELL=/usr/sbin/nologin TERM=$TERM USER=_lacme-www EOF stdout="$(readlink -e "/proc/$$/fd/1")" stderr="$(readlink -e "/proc/$$/fd/2")" grep -Fxq "0 0500 $UID:$GID /dev/null" "$prefix/fd" || return 1 grep -Fxq "1 0700 $UID:$GID $stdout" "$prefix/fd" || return 1 grep -Fxq "2 0700 $UID:$GID $stderr" "$prefix/fd" || return 1 sed -ri '\#^[012] #d' "$prefix/fd" grep -Exq "[0-9]+ 0700 $UID:$GID socket:\[[0-9]+\]" "$prefix/fd" || return 1 sed -ri '0,\#^[0-9]+ .* socket:\[[0-9]+\]$# {//d}' "$prefix/fd" ! test -s "$prefix/fd" || return 1 } lacme account check_accountd check_client account / ! test -e "$STATUSDIR/webserver/status" # account 'command' doesn't start the webserver lacme newOrder check_accountd challenge_dir="$(cat "$STATUSDIR/webserver/cwd")" [ "${challenge_dir#"/tmp/acme-challenge."}" != "$challenge_dir" ] || exit 1 check_client order "$challenge_dir" check_webserver "$challenge_dir" # the temporary challenge directory is created with permissive mode diff --label="a/webserver/cwd" --label="b/webserver/cwd" \ --color=auto --unified "$STATUSDIR/webserver/cwd-mod" - <<-EOF _lacme-client:root 0755 EOF # vim: set filetype=sh : lacme-0.8.3/tests/nginx-proxy000066400000000000000000000030541463261126600162030ustar00rootroot00000000000000# Use Nginx as reverse proxy for lacme's internal webserver using the # provided snippet # bind the webserver to the default listening address sed -i 's|^listen\s*=|#&|' /etc/lacme/lacme.conf DEBIAN_FRONTEND="noninteractive" apt install -y --no-install-recommends nginx-light curl cat >/etc/nginx/sites-enabled/default <<-EOF server { listen 80 default_server; server_name _; include /etc/lacme/nginx.conf; } EOF nginx # ensure that requests to the root URI and challenge URIs yield 502 Bad Gateway before starting the webserver rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/)"; [ $rv -eq 502 ] rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/foo)"; [ $rv -eq 502 ] lacme --debug newOrder 2>"$STDERR" || fail test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key grepstderr -Fq "Forking ACME webserver bound to /run/lacme-www.socket, child PID " grepstderr -Fq "Forking lacme-accountd, child PID " grepstderr -Fq "Forking /usr/libexec/lacme/client, child PID " grepstderr -Fq "Shutting down lacme-accountd" grepstderr -Fq "Shutting down ACME webserver bound to /run/lacme-www.socket" grepstderr -Eq "Incoming connection: GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+$" # ensure nginx was indeed used to serve challenge responses (Let's Encrypt caches validation results) grep -E "\"GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+\" 200 .* \(([^)]+; )*Let's Encrypt validation server(; [^)]+)*\)\"$" \ /var/log/nginx/access.log # vim: set filetype=sh : lacme-0.8.3/tests/nginx-static000066400000000000000000000042511463261126600163110ustar00rootroot00000000000000# Use Nginx to directly serve ACME challenge responses using the # provided snippet # bind the webserver to the default listening address sed -i 's|^listen\s*=|#&|' /etc/lacme/lacme.conf DEBIAN_FRONTEND="noninteractive" apt install -y --no-install-recommends nginx-light curl cat >/etc/nginx/sites-enabled/default <<-EOF server { listen 80 default_server; server_name _; include /etc/lacme/nginx-static.conf; } EOF nginx # 'challenge-directory' set to a non-existent directory sed -ri 's|^#?challenge-directory\s*=.*|challenge-directory = /var/www/acme-challenge|' /etc/lacme/lacme.conf ! lacme newOrder 2>"$STDERR" || fail grepstderr -Fqx "opendir(/var/www/acme-challenge): No such file or directory" # ensure that requests to the root URI and challenge URIs respectively yield 403 Forbidden (no index) and 404 Not Found install -o_lacme-client -gwww-data -m0750 -d /var/www/acme-challenge rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/)"; [ $rv -eq 403 ] rv="$(curl -w"%{http_code}" -so/dev/null http://127.0.0.1/.well-known/acme-challenge/foo)"; [ $rv -eq 404 ] # 'challenge-directory' set to a non-empty directory touch /var/www/acme-challenge/.stamp ! lacme newOrder 2>"$STDERR" || fail grepstderr -Fqx "Error: Refusing to use non-empty challenge directory /var/www/acme-challenge" rm -f /var/www/acme-challenge/.stamp lacme --debug newOrder 2>"$STDERR" || fail test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key ngrepstderr -Fq "Forking ACME webserver" grepstderr -Fq "Using existing webserver on /var/www/acme-challenge" grepstderr -Fq "Forking lacme-accountd, child PID " grepstderr -Fq "Forking /usr/libexec/lacme/client, child PID " grepstderr -Fq "Shutting down lacme-accountd" ngrepstderr -Fq "Shutting down ACME webserver" ngrepstderr -Eq "Incoming connection( from \S+)?: GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+$" # ensure nginx was indeed used to serve challenge responses (Let's Encrypt caches validation results) grep -E "\"GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+\" 200 .* \(([^)]+; )*Let's Encrypt validation server(; [^)]+)*\)\"$" \ /var/log/nginx/access.log # vim: set filetype=sh : lacme-0.8.3/tests/old-accountd000066400000000000000000000017611463261126600162600ustar00rootroot00000000000000# IPC test between lacme(8) and ancient lacme-accountd(1) 0.2 from Debian jessie adduser --disabled-password \ --home /home/lacme-account \ --gecos "lacme account user" \ --quiet lacme-account install -olacme-account -glacme-account -Ddm0700 -- ~lacme-account/.config/lacme chown lacme-account: /etc/lacme/account.key cat >~lacme-account/.config/lacme/lacme-accountd.conf <<-EOF privkey = file:/etc/lacme/account.key EOF echo "deb http://archive.debian.org/debian stretch main" >>/etc/apt/sources.list DEBIAN_FRONTEND="noninteractive" apt update DEBIAN_FRONTEND="noninteractive" apt install -y --no-install-recommends \ --reinstall --allow-downgrades \ -oDPkg::Options::="--force-confdef" -oDPkg::Options::="--force-overwrite" \ lacme-accountd/stretch SOCKET=~lacme-account/S.lacme runuser -u lacme-account -- lacme-accountd --socket="$SOCKET" & PID=$! sleep 1 lacme --socket="$SOCKET" account lacme --socket="$SOCKET" newOrder kill $PID wait # vim: set filetype=sh : lacme-0.8.3/tests/old-lacme000066400000000000000000000025641463261126600155430ustar00rootroot00000000000000# IPC test between recent lacme-accountd(1) and ancient lacme(8) 0.8 from Debian Bullseye # (we don't try earlier versions as we need v2 support of the ACME API # and non-pinned intermediates) adduser --disabled-password \ --home /home/lacme-account \ --gecos "lacme account user" \ --quiet lacme-account install -olacme-account -glacme-account -Ddm0700 -- ~lacme-account/.config/lacme chown lacme-account: /etc/lacme/account.key mv -f /usr/share/lacme/ca-certificates.crt /usr/share/lacme/ca-certificates.crt.back cat >~lacme-account/.config/lacme/lacme-accountd.conf <<-EOF privkey = file:/etc/lacme/account.key EOF echo "deb http://deb.debian.org/debian bullseye main" >>/etc/apt/sources.list DEBIAN_FRONTEND="noninteractive" apt update DEBIAN_FRONTEND="noninteractive" apt install -y --no-install-recommends \ --reinstall --allow-downgrades \ -oDPkg::Options::="--force-confdef" -oDPkg::Options::="--force-overwrite" \ lacme/bullseye # restore staging environment mv -f /usr/share/lacme/ca-certificates.crt.back /usr/share/lacme/ca-certificates.crt SOCKET=~lacme-account/S.lacme runuser -u lacme-account -- lacme-accountd --socket="$SOCKET" & PID=$! sleep 1 sed -ri "s/^\[accountd]$/#&/" /etc/lacme/lacme.conf # https://bugs.debian.org/955767 lacme --socket="$SOCKET" account lacme --socket="$SOCKET" newOrder kill $PID wait # vim: set filetype=sh : lacme-0.8.3/tests/register000066400000000000000000000003301463261126600155170ustar00rootroot00000000000000# Register new account key (or update the contact/ToS URI) lacme account --tos-agreed --register "mailto:noreply+lacme=$$@guilhem.org" # should return info about the account lacme account # vim: set filetype=sh : lacme-0.8.3/tests/spec-expansion000066400000000000000000000166361463261126600166470ustar00rootroot00000000000000# %-specifiers expansion # lacme --config=, all specifiers, root privileges ! lacme --config="%C %E %t %h %T %g %G %u %U %%.conf" account 2>"$STDERR" || fail grepstderr -Fxq "Can't open /var/cache /etc /run /root /tmp root 0 root 0 %.conf: No such file or directory" # lacme --config=, all specifiers, root privileges, defined XDG_* ! env XDG_CACHE_HOME=/foo/cache XDG_CONFIG_HOME=/foo/config XDG_RUNTIME_DIR=/foo/run HOME=/foo/home USER=myuser TMPDIR=/foo/tmp \ lacme --config="%C %E %t %h %T %g %G %u %U %%.conf" account 2>"$STDERR" || fail grepstderr -Fxq "Can't open /var/cache /etc /run /root /foo/tmp root 0 root 0 %.conf: No such file or directory" # lacme --config=, all specifiers, non-root, unset XDG_RUNTIME_DIR ! runuser -u nobody -- lacme --config="%C %E %t %h %T %g %G %u %U %%.conf" account 2>"$STDERR" || fail grepstderr -Fxq "Error: Undefined expansion %t in \"%C %E %t %h %T %g %G %u %U %%.conf\"" # lacme --config=, all specifiers, non-root, defined XDG_RUNTIME_DIR, no other XDG_* ! runuser -u nobody -g www-data -- env XDG_RUNTIME_DIR=/foo/run \ lacme --config="%C %E %t %h %T %g %G %u %U %%.conf" account 2>"$STDERR" || fail grepstderr -Fxq "Can't open /nonexistent/.cache /nonexistent/.config /foo/run /nonexistent /tmp www-data 33 nobody 65534 %.conf: No such file or directory" # lacme --config=, all specifiers, non-root, defined XDG_* ! runuser -u nobody -- env XDG_CACHE_HOME=/foo/cache XDG_CONFIG_HOME=/foo/config XDG_RUNTIME_DIR=/foo/run HOME=/foo/home USER=myuser TMPDIR=/foo/tmp \ lacme --config="%C %E %t %h %T %g %G %u %U %%.conf" account 2>"$STDERR" || fail grepstderr -Fxq "Can't open /foo/cache /foo/config /foo/run /nonexistent /foo/tmp nogroup 65534 nobody 65534 %.conf: No such file or directory" # lacme --socket= ! lacme --config="%E/lacme/lacme.conf" --socket="%t/S.lacme2" account --debug 2>"$STDERR" || fail grepstderr -Fxq "Using configuration file: /etc/lacme/lacme.conf" grepstderr -Fxq "Can't stat /run/S.lacme2: No such file or directory (Is lacme-accountd running?)" # 'challenge-directory' setting (expands before privilege drop) sed -ri 's|^#?challenge-directory\s*=.*|challenge-directory = /nonexistent/%u:%g|' /etc/lacme/lacme.conf ! lacme newOrder --debug 2>"$STDERR" || fail grepstderr -Fq "Using existing webserver on /nonexistent/root:root" # lacme --config-certs= and 'config-certs' settings (expands before privilege drop) ! lacme newOrder --debug nonexistent 2>"$STDERR" || fail grepstderr -Fxq "Reading /etc/lacme/lacme-certs.conf" sed -ri 's|^#?config-certs\s*=.*|config-certs = /nonexistent/%u:%g.conf|' /etc/lacme/lacme.conf ! lacme newOrder --debug nonexistent 2>"$STDERR" || fail grepstderr -Fxq "Reading /nonexistent/root:root.conf" ! lacme newOrder --config-certs="%E/lacme/certs.conf.d" --debug nonexistent 2>"$STDERR" || fail grepstderr -vFxq "Reading /etc/lacme/lacme-certs.conf" grepstderr -Fxq "Reading /etc/lacme/certs.conf.d" # 'config' setting in [accountd] section (expands after privilege drop) sed -ri 's|^#?config\s*=\s*$|config = /nonexistent/%u:%g.conf|' /etc/lacme/lacme.conf ! lacme account 2>"$STDERR" || fail grepstderr -Fxq "Error: Failed to open file '/nonexistent/root:root.conf' for reading: No such file or directory" sed -ri 's|^#?user\s*=\s*$|user = nobody|' /etc/lacme/lacme.conf ! lacme account 2>"$STDERR" || fail grepstderr -Fxq "Error: Failed to open file '/nonexistent/nobody:root.conf' for reading: No such file or directory" # 'command' setting in [accountd] section (expands after privilege drop) sed -ri 's|^#?command\s*=.*/lacme-accountd$|command = /usr/bin/lacme-accountd --%u|' /etc/lacme/lacme.conf ! lacme account 2>"$STDERR" || fail grepstderr -Fxq "Unknown option: nobody" sed -ri 's|^#?command\s*=.*/lacme-accountd .*|command = /nonexistent/%u/%g %u %g|' /etc/lacme/lacme.conf ! lacme account 2>"$STDERR" || fail grepstderr -Eq "^Can't exec \"/nonexistent/nobody/root\": No such file or directory" ####################################################################### # lacme-accountd --config=, all specifiers, root privileges ! lacme-accountd --config="%C %E %t %h %T %g %G %u %U %%.conf" 2>"$STDERR" || fail grepstderr -Fxq "Error: Failed to open file '/var/cache /etc /run /root /tmp root 0 root 0 %.conf' for reading: No such file or directory" # lacme-accountd --config=, all specifiers, root privileges, defined XDG_* ! env XDG_CACHE_HOME=/foo/cache XDG_CONFIG_HOME=/foo/config XDG_RUNTIME_DIR=/foo/run HOME=/foo/home USER=myuser TMPDIR=/foo/tmp \ lacme-accountd --config="%C %E %t %h %T %g %G %u %U %%.conf" 2>"$STDERR" || fail grepstderr -Fxq "Error: Failed to open file '/var/cache /etc /run /root /foo/tmp root 0 root 0 %.conf' for reading: No such file or directory" # lacme-accountd --config=, all specifiers, non-root, unset XDG_RUNTIME_DIR ! runuser -u nobody -- lacme-accountd --config="%C %E %t %h %T %g %G %u %U %%.conf" account 2>"$STDERR" || fail grepstderr -Fxq "Error: Undefined expansion %t in \"%C %E %t %h %T %g %G %u %U %%.conf\"" # lacme-accountd --config=, all specifiers, non-root, defined XDG_RUNTIME_DIR, no other XDG_* ! runuser -u nobody -g www-data -- env XDG_RUNTIME_DIR=/foo/run \ lacme-accountd --config="%C %E %t %h %T %g %G %u %U %%.conf" 2>"$STDERR" || fail grepstderr -Fxq "Error: Failed to open file '/nonexistent/.cache /nonexistent/.config /foo/run /nonexistent /tmp www-data 33 nobody 65534 %.conf' for reading: No such file or directory" # lacme-accountd --config=, all specifiers, non-root, defined XDG_* ! runuser -u nobody -- env XDG_CACHE_HOME=/foo/cache XDG_CONFIG_HOME=/foo/config XDG_RUNTIME_DIR=/foo/run HOME=/foo/home USER=myuser TMPDIR=/foo/tmp \ lacme-accountd --config="%C %E %t %h %T %g %G %u %U %%.conf" 2>"$STDERR" || fail grepstderr -Fxq "Error: Failed to open file '/foo/cache /foo/config /foo/run /nonexistent /foo/tmp nogroup 65534 nobody 65534 %.conf' for reading: No such file or directory" # lacme-accountd --privkey= ! lacme-accountd --privkey="file:%h/lacme-accountd.key" --debug 2>"$STDERR" || fail grepstderr -Fxq "Error: Can't open /root/lacme-accountd.key: No such file or directory" # lacme-accountd, default socket location lacme-accountd --debug 2>"$STDERR" & PID=$! sleep 1 kill $PID || fail wait || fail grepstderr -Fxq "Using configuration file: /etc/lacme/lacme-accountd.conf" grepstderr -Fxq "Starting lacme Account Key Manager at /run/S.lacme" grepstderr -Fxq "Unlinking /run/S.lacme" # lacme-accountd --config= --socket= --privkey= ln -s lacme-accountd.conf /etc/lacme/accountd.conf lacme-accountd --config="%E/lacme/accountd.conf" --socket="%t/S.lacme2" --privkey="file:%E/lacme/account.key" --debug 2>"$STDERR" & PID=$! sleep 1 kill $PID || fail wait || fail grepstderr -Fxq "Using configuration file: /etc/lacme/accountd.conf" grepstderr -Fxq "Starting lacme Account Key Manager at /run/S.lacme2" grepstderr -Fxq "Unlinking /run/S.lacme2" # lacme-accountd, custom 'socket' setting sed -ri 's|^#?socket\s*=.*|socket = %t/S.lacme3|' /etc/lacme/lacme-accountd.conf lacme-accountd --debug 2>"$STDERR" & PID=$! sleep 1 kill $PID || fail wait || fail grepstderr -Fxq "Using configuration file: /etc/lacme/lacme-accountd.conf" grepstderr -Fxq "Starting lacme Account Key Manager at /run/S.lacme3" grepstderr -Fxq "Unlinking /run/S.lacme3" # lacme-accountd, custom 'privkey' setting sed -ri 's|^privkey\s*=.*|privkey = file:%h/lacme-accountd.key|' /etc/lacme/lacme-accountd.conf ! lacme-accountd --debug 2>"$STDERR" || fail grepstderr -Fxq "Error: Can't open /root/lacme-accountd.key: No such file or directory" # vim: set filetype=sh : lacme-0.8.3/tests/webservers000066400000000000000000000015001463261126600160620ustar00rootroot00000000000000# Multiple webservers (each binding to a different address) sed -ri 's|^#?listen\s*=.*|listen = [::]:80 127.0.0.1:8080|' /etc/lacme/lacme.conf lacme --debug newOrder 2>"$STDERR" || fail newOrder test /etc/lacme/simpletest.rsa.crt -nt /etc/lacme/simpletest.rsa.key grepstderr -Fq "Forking ACME webserver bound to [::]:80, child PID " grepstderr -Fq "Forking ACME webserver bound to 127.0.0.1:8080, child PID " grepstderr -Fq "Forking lacme-accountd, child PID " grepstderr -Fq "Forking /usr/libexec/lacme/client, child PID " grepstderr -Fq "Shutting down lacme-accountd" grepstderr -Fq "Shutting down ACME webserver bound to [::]:80" grepstderr -Fq "Shutting down ACME webserver bound to 127.0.0.1:8080" grepstderr -Eq "Incoming connection( from \S+)?: GET /\.well-known/acme-challenge/\S+ HTTP/[0-9.]+$" # vim: set filetype=sh : lacme-0.8.3/webserver000077500000000000000000000110431463261126600145430ustar00rootroot00000000000000#!/usr/bin/perl -T #---------------------------------------------------------------------- # ACME client written with process isolation and minimal privileges in mind # (webserver component) # Copyright © 2015-2021 Guilhem Moulin # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . #---------------------------------------------------------------------- use v5.14.2; use strict; use warnings; # Usage: webserver FD # # fdopen(3) the file descriptor FD (corresponding to a listening # socket), then keep accept(2)'ing connections and consider each # connection as the verification of an ACME challenge, i.e., serve the # requested challenge token. # # NOTE: one needs to chdir(2) to an appropriate ACME challenge directory # before running this program, since challenge tokens are (on purpose) # only looked for in the current directory. # # NOTE: one should run this program as an unprivileged user:group such # as "www-data:www-data"; bind(2)'ing to a privileged port such as 80 is # not a problem since FD can be bound as root prior to the execve(2). use Errno qw/EINTR ENOENT/; use Fcntl qw/O_NOFOLLOW O_RDONLY/; use Socket qw/AF_UNIX AF_INET AF_INET6/; # Untaint and fdopen(3) the listening socket (shift @ARGV // die) =~ /\A(\d+)\z/ or die; open (my $S, '+<&=', $1+0) or die "fdopen $1: $!"; my $ROOT = '/.well-known/acme-challenge'; close STDIN or die "close: $!"; close STDOUT or die "close: $!"; sub info($$$) { my ($sockaddr, $msg, $req) = @_; $req =~ s/\r\n\z// if defined $req; # get a string representation of the peer's address my $fam = Socket::sockaddr_family($sockaddr); my $peer; if ($fam == AF_UNIX) { $peer = Socket::unpack_sockaddr_un($sockaddr); } else { my (undef, $ip) = $fam == AF_INET ? Socket::unpack_sockaddr_in($sockaddr) : $fam == AF_INET6 ? Socket::unpack_sockaddr_in6($sockaddr) : die; $peer = Socket::inet_ntop($fam, $ip); } $msg .= " from [$peer]" if defined $peer and $peer ne ''; $msg .= ": $req" if defined $req; print STDERR $msg, "\n"; } while (1) { my $sockaddr = accept(my $conn, $S) or do { next if $! == EINTR; # try again if accept(2) was interrupted by a signal die "accept: $!"; }; my $req = $conn->getline(); info($sockaddr, "[$$] Incoming connection", $req) if $ENV{DEBUG}; next unless defined $req; if ($req !~ s/\A(GET|HEAD) (.*) HTTP\/(1\.[01])\r\n\z/$2/) { info($sockaddr, "Error: Bad request", $req); next; } my ($method, $proto) = ($1, $3); # Consume (and ignore) the headers while (defined (my $h = $conn->getline())) { last if $h eq "\r\n" }; my ($status_line, $content_type, $content); if ($req =~ /\A\Q$ROOT\E\/([A-Za-z0-9_\-]+)\z/) { # only serve base64-encoded filenames (tokens) in the cwd # XXX stat(2) followed by open(2) is racy; open(2) would hang if # an attacker manages to replace a regular file with a FIFO # between the syscalls, leading to denial of service; however # there shouldn't be any risk of information disclosure as we're # not following symlinks (and the cwd is not owned by us) if (-f $1 and sysopen(my $fh, $1, O_NOFOLLOW|O_RDONLY)) { ($status_line, $content_type) = ('200 OK', 'application/jose+json'); $content = do { local $/ = undef; $fh->getline() }; $fh->close() or die "close: $!"; } elsif ($! == ENOENT) { # errno from either stat(2) or open(2) $status_line = '404 Not Found'; } } $conn->print( "HTTP/$proto ", ($status_line // '403 Forbidden'), "\r\n" ); $conn->print( "Content-Type: $content_type\r\n" ) if defined $content_type; $conn->print( "Content-Length: ".length($content)."\r\n" ) if defined $content; $conn->print( "Connection: close\r\n" ); $conn->print( "\r\n" ); $conn->print( $content ) if defined $content and $method eq 'GET'; $conn->close() or die "close: $!"; }