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ktls-utils
ktls-utils-0.10+12.gc3923f7.obscpio
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File ktls-utils-0.10+12.gc3923f7.obscpio of Package ktls-utils
07070100000000000041ED00000000000000000000000265FC3A6A00000000000000000000000000000000000000000000002400000000ktls-utils-0.10+12.gc3923f7/.github07070100000001000041ED00000000000000000000000265FC3A6A00000000000000000000000000000000000000000000002E00000000ktls-utils-0.10+12.gc3923f7/.github/workflows07070100000002000081A400000000000000000000000165FC3A6A000002C2000000000000000000000000000000000000003B00000000ktls-utils-0.10+12.gc3923f7/.github/workflows/makefile.ymlname: Multi-platform CI on: [ push, pull_request, workflow_dispatch ] jobs: build: runs-on: ubuntu-latest strategy: fail-fast: false matrix: platform: - linux/amd64 - linux/arm/v6 - linux/arm/v7 - linux/arm64 steps: - uses: actions/checkout@v3 - name: Install dependencies run: | sudo apt-get update sudo apt-get -y install gnutls-dev libkeyutils-dev libnl-3-dev libnl-genl-3-dev - name: Configure run: | ./autogen.sh ./configure --with-systemd - name: Build run: make - name: Check run: make check - name: Distcheck run: make distcheck 07070100000003000081A400000000000000000000000165FC3A6A0000011A000000000000000000000000000000000000002700000000ktls-utils-0.10+12.gc3923f7/.gitignore*.swp *.o autom4te.cache/ configure.ac~ configure configure~ cscope.* Makefile Makefile.in .deps/ aclocal.m4 compile config.h config.h.in config.h.in~ config.guess config.log config.status config.sub cov-int/ depcomp install-sh missing ktls-utils-*.tar.gz ktls-utils-*.tgz stamp-h1 07070100000004000081A400000000000000000000000165FC3A6A000000B8000000000000000000000000000000000000002400000000ktls-utils-0.10+12.gc3923f7/AUTHORSChuck Lever <chuck.lever@oracle.com> Dr. Hannes Reinecke <hare@suse.de> Benjamin Coddington <bcodding@redhat.com> Olga Kornievskaia <aglo@netapp.com> Scott Mayhew <smayhew@redhat.com> 07070100000005000081A400000000000000000000000165FC3A6A00000D5E000000000000000000000000000000000000002C00000000ktls-utils-0.10+12.gc3923f7/CONTRIBUTING.md# Contributing Guidelines Thank you for your interest in contributing to our project! Whether it's a bug report, new feature, correction, or additional documentation, we greatly value feedback and contributions from the open source community. Please read through this document before submitting an issue or pull request to ensure we have all the necessary information to effectively respond to your bug report or contribution. An old-school developer's mailing list is available. See [lists.linux.dev](https://subspace.kernel.org/lists.linux.dev.html) for links to subscribe to <kernel-tls-handshake@lists.linux.dev> or to access archived threads. ## Opening issues We welcome you to use the GitHub issue tracker to report bugs or suggest features. When filing an issue, please check existing open or recently closed issues to make sure somebody else hasn't already reported the issue. Please try to include as much information as you can. Details like these are incredibly useful: * A reproducible test case or series of steps * The version of our code being used * Any modifications you've made relevant to the bug * Anything unusual about your environment or deployment If you think you've found a security vulnerability, do not raise a GitHub issue and follow the instructions in our [security policy](./SECURITY.md). ## Contributing code We welcome your code contributions. Before submitting code via a pull request, you will need to have signed the [Oracle Contributor Agreement][OCA] (OCA) and your commits need to include the following line using the name and e-mail address you used to sign the OCA: ```text Signed-off-by: Your Name <you@example.org> ``` This can be automatically added to pull requests by committing with `--sign-off` or `-s`, e.g. ```text git commit --signoff ``` Only pull requests from committers that can be verified as having signed the OCA can be accepted. ## Pull request process Contributions via pull requests are much appreciated. Before sending us a pull request, please ensure that: 1. You open an issue to discuss any significant work - we would hate for your time to be wasted. 2. You check existing open, and recently merged, pull requests to make sure someone else hasn't addressed the problem already. To send us a pull request, please: 1. Fork the repository. 2. Modify the source. Focus on the specific change you are contributing. If you also reformat all the code, it will be hard for us to review on your change. 3. Ensure local tests pass. 4. Commit to your fork using concise commit messages. 5. Send us a pull request, answering any default questions in the pull request interface. 6. Pay attention to any automated CI failures reported in the pull request and stay involved in the conversation. GitHub provides additional document on [forking a repository](https://help.github.com/articles/fork-a-repo/) and [creating a pull request](https://help.github.com/articles/creating-a-pull-request/). ## Licensing See the [COPYING](COPYING) file for our project's licensing. We will ask you to confirm the licensing of your contribution. ## Code of conduct Follow the [Golden Rule](https://en.wikipedia.org/wiki/Golden_Rule). If you'd like more specific guidelines, see the [Contributor Covenant Code of Conduct][COC]. [OCA]: https://oca.opensource.oracle.com [COC]: https://www.contributor-covenant.org/version/1/4/code-of-conduct/ 07070100000006000081A400000000000000000000000165FC3A6A0000464A000000000000000000000000000000000000002400000000ktls-utils-0.10+12.gc3923f7/COPYING GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. 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If this is what you want to do, use the GNU Library General Public License instead of this License. 07070100000007000081A400000000000000000000000165FC3A6A00000879000000000000000000000000000000000000002600000000ktls-utils-0.10+12.gc3923f7/ChangeLogChange Log - In newest-release-first order ktls-utils 0.10 - 2023-09-21 * Fix Server Name Indicator support (IP addresses) * Add tlshd.conf option to provide specific trust chain * Reorganize tlshd.conf * Fix numerous bugs reported by packagers ktls-utils 0.9 - 2023-05-01 * Cipher negotiaion now conforms with distro security policies * Improve Server Name Indicator support * Disable Nagle during handshakes * Send TLS Alerts on handshake errors ktls-utils 0.8 - 2023-04-05 * Replace the listen-based upcall mechanism with netlink * Implement server-side handshake support * Implement x.509 certificate verification * Implement keyring-based exchange of authentication material ktls-utils 0.7 - 2022-11-10 * Remove the -n command line option * Support client-side peer authentication * Support upcall API changes in v6.0 prototype kernel * Add /etc/tlshd.conf with support for default cert and private key ktls-utils 0.6 - 2022-05-27 * Update value of SOL_TLSH constant for kernel v5.18 * Fix gnutls_transport_is_ktls_enabled() * Avoid zombie children * Report peer certificate verification failures * Split the debug command-line option ktls-utils 0.5 - 2022-04-11 * Fix retrieval of TLSH_PRIORITIES * Refactor keyring code * Sketch in x.509 client authentication support * Re-license request from Oracle CorpArch * Enable thorough static code checking * Enable compilation with older versions of GnuTLS ktls-utils 0.4 - 2022-03-04 * Add date and time to build version strings * Document FIPS mode in tlshd(8) * Initial support for PSK handshakes * Initial support for SM4_GCM and SM4_CCM ciphers * Support SOL_TLSH socket options ktls-utils 0.3 - 2022-02-25 * Tell server not to send New Session tickets * Document SSLKEYLOGFILE in tlshd(8) * Move kTLS-specific code to src/tlshd/ktls.c * Suggested logic to distinguish between PSK and x.509 * Check for existence of keyutils.h ktls-utils 0.2 - 2022-02-08 * Replace OpenSSL with GnuTLS * AF_TLSH kernel API has been simplified * Fixes to get TLS handshake working * More syslog helpers * Added sample systemd unit ktls-utils 0.1 - 2021-12-13 * Initial code base 07070100000008000081A400000000000000000000000165FC3A6A00003EBB000000000000000000000000000000000000002400000000ktls-utils-0.10+12.gc3923f7/INSTALLNormal instructions for building ktls-utils ******************************************* $ ./autogen.sh $ ./configure --with-systemd $ make # make install # systemctl daemon-reload # systemctl enable --now tlshd Additional configuration information is provided in the generic instructions below. Installation Instructions ************************* Copyright (C) 1994-1996, 1999-2002, 2004-2013 Free Software Foundation, Inc. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. This file is offered as-is, without warranty of any kind. Basic Installation ================== Briefly, the shell command `./configure && make && make install' should configure, build, and install this package. The following more-detailed instructions are generic; see the `README' file for instructions specific to this package. Some packages provide this `INSTALL' file but do not implement all of the features documented below. The lack of an optional feature in a given package is not necessarily a bug. More recommendations for GNU packages can be found in *note Makefile Conventions: (standards)Makefile Conventions. The `configure' shell script attempts to guess correct values for various system-dependent variables used during compilation. It uses those values to create a `Makefile' in each directory of the package. It may also create one or more `.h' files containing system-dependent definitions. Finally, it creates a shell script `config.status' that you can run in the future to recreate the current configuration, and a file `config.log' containing compiler output (useful mainly for debugging `configure'). It can also use an optional file (typically called `config.cache' and enabled with `--cache-file=config.cache' or simply `-C') that saves the results of its tests to speed up reconfiguring. Caching is disabled by default to prevent problems with accidental use of stale cache files. If you need to do unusual things to compile the package, please try to figure out how `configure' could check whether to do them, and mail diffs or instructions to the address given in the `README' so they can be considered for the next release. If you are using the cache, and at some point `config.cache' contains results you don't want to keep, you may remove or edit it. The file `configure.ac' (or `configure.in') is used to create `configure' by a program called `autoconf'. You need `configure.ac' if you want to change it or regenerate `configure' using a newer version of `autoconf'. The simplest way to compile this package is: 1. `cd' to the directory containing the package's source code and type `./configure' to configure the package for your system. Running `configure' might take a while. While running, it prints some messages telling which features it is checking for. 2. Type `make' to compile the package. 3. Optionally, type `make check' to run any self-tests that come with the package, generally using the just-built uninstalled binaries. 4. Type `make install' to install the programs and any data files and documentation. When installing into a prefix owned by root, it is recommended that the package be configured and built as a regular user, and only the `make install' phase executed with root privileges. 5. Optionally, type `make installcheck' to repeat any self-tests, but this time using the binaries in their final installed location. This target does not install anything. Running this target as a regular user, particularly if the prior `make install' required root privileges, verifies that the installation completed correctly. 6. You can remove the program binaries and object files from the source code directory by typing `make clean'. To also remove the files that `configure' created (so you can compile the package for a different kind of computer), type `make distclean'. There is also a `make maintainer-clean' target, but that is intended mainly for the package's developers. If you use it, you may have to get all sorts of other programs in order to regenerate files that came with the distribution. 7. Often, you can also type `make uninstall' to remove the installed files again. In practice, not all packages have tested that uninstallation works correctly, even though it is required by the GNU Coding Standards. 8. Some packages, particularly those that use Automake, provide `make distcheck', which can by used by developers to test that all other targets like `make install' and `make uninstall' work correctly. This target is generally not run by end users. Compilers and Options ===================== Some systems require unusual options for compilation or linking that the `configure' script does not know about. Run `./configure --help' for details on some of the pertinent environment variables. You can give `configure' initial values for configuration parameters by setting variables in the command line or in the environment. Here is an example: ./configure CC=c99 CFLAGS=-g LIBS=-lposix *Note Defining Variables::, for more details. Compiling For Multiple Architectures ==================================== You can compile the package for more than one kind of computer at the same time, by placing the object files for each architecture in their own directory. To do this, you can use GNU `make'. `cd' to the directory where you want the object files and executables to go and run the `configure' script. `configure' automatically checks for the source code in the directory that `configure' is in and in `..'. This is known as a "VPATH" build. With a non-GNU `make', it is safer to compile the package for one architecture at a time in the source code directory. After you have installed the package for one architecture, use `make distclean' before reconfiguring for another architecture. On MacOS X 10.5 and later systems, you can create libraries and executables that work on multiple system types--known as "fat" or "universal" binaries--by specifying multiple `-arch' options to the compiler but only a single `-arch' option to the preprocessor. Like this: ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \ CPP="gcc -E" CXXCPP="g++ -E" This is not guaranteed to produce working output in all cases, you may have to build one architecture at a time and combine the results using the `lipo' tool if you have problems. Installation Names ================== By default, `make install' installs the package's commands under `/usr/local/bin', include files under `/usr/local/include', etc. You can specify an installation prefix other than `/usr/local' by giving `configure' the option `--prefix=PREFIX', where PREFIX must be an absolute file name. You can specify separate installation prefixes for architecture-specific files and architecture-independent files. If you pass the option `--exec-prefix=PREFIX' to `configure', the package uses PREFIX as the prefix for installing programs and libraries. Documentation and other data files still use the regular prefix. In addition, if you use an unusual directory layout you can give options like `--bindir=DIR' to specify different values for particular kinds of files. Run `configure --help' for a list of the directories you can set and what kinds of files go in them. In general, the default for these options is expressed in terms of `${prefix}', so that specifying just `--prefix' will affect all of the other directory specifications that were not explicitly provided. The most portable way to affect installation locations is to pass the correct locations to `configure'; however, many packages provide one or both of the following shortcuts of passing variable assignments to the `make install' command line to change installation locations without having to reconfigure or recompile. The first method involves providing an override variable for each affected directory. For example, `make install prefix=/alternate/directory' will choose an alternate location for all directory configuration variables that were expressed in terms of `${prefix}'. Any directories that were specified during `configure', but not in terms of `${prefix}', must each be overridden at install time for the entire installation to be relocated. The approach of makefile variable overrides for each directory variable is required by the GNU Coding Standards, and ideally causes no recompilation. However, some platforms have known limitations with the semantics of shared libraries that end up requiring recompilation when using this method, particularly noticeable in packages that use GNU Libtool. The second method involves providing the `DESTDIR' variable. For example, `make install DESTDIR=/alternate/directory' will prepend `/alternate/directory' before all installation names. The approach of `DESTDIR' overrides is not required by the GNU Coding Standards, and does not work on platforms that have drive letters. On the other hand, it does better at avoiding recompilation issues, and works well even when some directory options were not specified in terms of `${prefix}' at `configure' time. Optional Features ================= If the package supports it, you can cause programs to be installed with an extra prefix or suffix on their names by giving `configure' the option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. Some packages pay attention to `--enable-FEATURE' options to `configure', where FEATURE indicates an optional part of the package. They may also pay attention to `--with-PACKAGE' options, where PACKAGE is something like `gnu-as' or `x' (for the X Window System). The `README' should mention any `--enable-' and `--with-' options that the package recognizes. For packages that use the X Window System, `configure' can usually find the X include and library files automatically, but if it doesn't, you can use the `configure' options `--x-includes=DIR' and `--x-libraries=DIR' to specify their locations. Some packages offer the ability to configure how verbose the execution of `make' will be. For these packages, running `./configure --enable-silent-rules' sets the default to minimal output, which can be overridden with `make V=1'; while running `./configure --disable-silent-rules' sets the default to verbose, which can be overridden with `make V=0'. Particular systems ================== On HP-UX, the default C compiler is not ANSI C compatible. If GNU CC is not installed, it is recommended to use the following options in order to use an ANSI C compiler: ./configure CC="cc -Ae -D_XOPEN_SOURCE=500" and if that doesn't work, install pre-built binaries of GCC for HP-UX. HP-UX `make' updates targets which have the same time stamps as their prerequisites, which makes it generally unusable when shipped generated files such as `configure' are involved. Use GNU `make' instead. On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot parse its `<wchar.h>' header file. The option `-nodtk' can be used as a workaround. If GNU CC is not installed, it is therefore recommended to try ./configure CC="cc" and if that doesn't work, try ./configure CC="cc -nodtk" On Solaris, don't put `/usr/ucb' early in your `PATH'. This directory contains several dysfunctional programs; working variants of these programs are available in `/usr/bin'. So, if you need `/usr/ucb' in your `PATH', put it _after_ `/usr/bin'. On Haiku, software installed for all users goes in `/boot/common', not `/usr/local'. It is recommended to use the following options: ./configure --prefix=/boot/common Specifying the System Type ========================== There may be some features `configure' cannot figure out automatically, but needs to determine by the type of machine the package will run on. Usually, assuming the package is built to be run on the _same_ architectures, `configure' can figure that out, but if it prints a message saying it cannot guess the machine type, give it the `--build=TYPE' option. TYPE can either be a short name for the system type, such as `sun4', or a canonical name which has the form: CPU-COMPANY-SYSTEM where SYSTEM can have one of these forms: OS KERNEL-OS See the file `config.sub' for the possible values of each field. If `config.sub' isn't included in this package, then this package doesn't need to know the machine type. If you are _building_ compiler tools for cross-compiling, you should use the option `--target=TYPE' to select the type of system they will produce code for. If you want to _use_ a cross compiler, that generates code for a platform different from the build platform, you should specify the "host" platform (i.e., that on which the generated programs will eventually be run) with `--host=TYPE'. Sharing Defaults ================ If you want to set default values for `configure' scripts to share, you can create a site shell script called `config.site' that gives default values for variables like `CC', `cache_file', and `prefix'. `configure' looks for `PREFIX/share/config.site' if it exists, then `PREFIX/etc/config.site' if it exists. Or, you can set the `CONFIG_SITE' environment variable to the location of the site script. A warning: not all `configure' scripts look for a site script. Defining Variables ================== Variables not defined in a site shell script can be set in the environment passed to `configure'. However, some packages may run configure again during the build, and the customized values of these variables may be lost. In order to avoid this problem, you should set them in the `configure' command line, using `VAR=value'. For example: ./configure CC=/usr/local2/bin/gcc causes the specified `gcc' to be used as the C compiler (unless it is overridden in the site shell script). Unfortunately, this technique does not work for `CONFIG_SHELL' due to an Autoconf limitation. Until the limitation is lifted, you can use this workaround: CONFIG_SHELL=/bin/bash ./configure CONFIG_SHELL=/bin/bash `configure' Invocation ====================== `configure' recognizes the following options to control how it operates. `--help' `-h' Print a summary of all of the options to `configure', and exit. `--help=short' `--help=recursive' Print a summary of the options unique to this package's `configure', and exit. The `short' variant lists options used only in the top level, while the `recursive' variant lists options also present in any nested packages. `--version' `-V' Print the version of Autoconf used to generate the `configure' script, and exit. `--cache-file=FILE' Enable the cache: use and save the results of the tests in FILE, traditionally `config.cache'. FILE defaults to `/dev/null' to disable caching. `--config-cache' `-C' Alias for `--cache-file=config.cache'. `--quiet' `--silent' `-q' Do not print messages saying which checks are being made. To suppress all normal output, redirect it to `/dev/null' (any error messages will still be shown). `--srcdir=DIR' Look for the package's source code in directory DIR. Usually `configure' can determine that directory automatically. `--prefix=DIR' Use DIR as the installation prefix. *note Installation Names:: for more details, including other options available for fine-tuning the installation locations. `--no-create' `-n' Run the configure checks, but stop before creating any output files. `configure' also accepts some other, not widely useful, options. Run `configure --help' for more details. 07070100000009000081A400000000000000000000000165FC3A6A0000464A000000000000000000000000000000000000002800000000ktls-utils-0.10+12.gc3923f7/LICENSE.txt GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Library General Public License instead.) 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 this service 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 make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. 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. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does. 1. You may copy and distribute 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 and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. 2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change. b) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License. c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. 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You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. 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These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License. 7. 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If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the 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 a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. 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It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. <one line to give the program's name and a brief idea of what it does.> Copyright (C) <year> <name of author> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision 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, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. <signature of Ty Coon>, 1 April 1989 Ty Coon, President of Vice This 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 Library General Public License instead of this License. 0707010000000A000081A400000000000000000000000165FC3A6A00000380000000000000000000000000000000000000002800000000ktls-utils-0.10+12.gc3923f7/Makefile.am# # Copyright (c) 2022 Oracle and/or its affiliates. # # ktls-utils 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; version 2. # # 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, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301, USA. # AUTOMAKE_OPTIONS = foreign EXTRA_DIST = autogen.sh CONTRIBUTING.md LICENSE.txt \ README.md SECURITY.md SUBDIRS = src systemd MAINTAINERCLEANFILES = Makefile.in cscope.* ktls-utils*.tar.gz 0707010000000B000081A400000000000000000000000165FC3A6A000000CE000000000000000000000000000000000000002100000000ktls-utils-0.10+12.gc3923f7/NEWSktls-utils 0.10 - 2023-09-21 * Fix Server Name Indicator support (IP addresses) * Add tlshd.conf option to provide specific trust chain * Reorganize tlshd.conf * Fix numerous bugs reported by packagers 0707010000000C000081A400000000000000000000000165FC3A6A000005E3000000000000000000000000000000000000002300000000ktls-utils-0.10+12.gc3923f7/README# Release Notes for ktls-utils 0.11-dev Note well: This is experimental prototype software. It's purpose is purely as a demonstration and proof-of-concept. USE AT YOUR OWN RISK. In-kernel TLS consumers need a mechanism to perform TLS handshakes on a connected socket to negotiate TLS session parameters that can then be programmed into the kernel's TLS record protocol engine. This package of software provides a TLS handshake user agent that listens for kernel requests and then materializes a user space socket endpoint on which to perform these handshakes. The resulting negotiated session parameters are passed back to the kernel via standard kTLS socket options. See [COPYING](COPYING) for the full text of the license under which this package is released. ## Dependencies * The local kernel must be built with CONFIG_TLS enabled * The local build environment requires GnuTLS and keyutils ## Installation See [NEWS](NEWS) to see what has changed in the latest release, and see [INSTALL](INSTALL) for build instructions. ## Contributing This project welcomes contributions from the community. Before submitting a pull request, please [review our contribution guide](./CONTRIBUTING.md). See the GitHub Issue Tracker to review or open to-do items. ## Security Please consult the [security guide](./SECURITY.md) for our responsible security vulnerability disclosure process ## License Copyright (c) 2023 Oracle and/or its affiliates. Released under the GNU GENERAL PUBLIC LICENSE version 2 0707010000000D000081A400000000000000000000000165FC3A6A000005E3000000000000000000000000000000000000002600000000ktls-utils-0.10+12.gc3923f7/README.md# Release Notes for ktls-utils 0.11-dev Note well: This is experimental prototype software. It's purpose is purely as a demonstration and proof-of-concept. USE AT YOUR OWN RISK. In-kernel TLS consumers need a mechanism to perform TLS handshakes on a connected socket to negotiate TLS session parameters that can then be programmed into the kernel's TLS record protocol engine. This package of software provides a TLS handshake user agent that listens for kernel requests and then materializes a user space socket endpoint on which to perform these handshakes. The resulting negotiated session parameters are passed back to the kernel via standard kTLS socket options. See [COPYING](COPYING) for the full text of the license under which this package is released. ## Dependencies * The local kernel must be built with CONFIG_TLS enabled * The local build environment requires GnuTLS and keyutils ## Installation See [NEWS](NEWS) to see what has changed in the latest release, and see [INSTALL](INSTALL) for build instructions. ## Contributing This project welcomes contributions from the community. Before submitting a pull request, please [review our contribution guide](./CONTRIBUTING.md). See the GitHub Issue Tracker to review or open to-do items. ## Security Please consult the [security guide](./SECURITY.md) for our responsible security vulnerability disclosure process ## License Copyright (c) 2023 Oracle and/or its affiliates. Released under the GNU GENERAL PUBLIC LICENSE version 2 0707010000000E000081A400000000000000000000000165FC3A6A000006C9000000000000000000000000000000000000002800000000ktls-utils-0.10+12.gc3923f7/SECURITY.md# Reporting security vulnerabilities Oracle values the independent security research community and believes that responsible disclosure of security vulnerabilities helps us ensure the security and privacy of all our users. Please do NOT raise a GitHub Issue to report a security vulnerability. If you believe you have found a security vulnerability, please submit a report to [secalert_us@oracle.com][1] preferably with a proof of concept. Please review some additional information on [how to report security vulnerabilities to Oracle][2]. We encourage people who contact Oracle Security to use email encryption using [our encryption key][3]. We ask that you do not use other channels or contact the project maintainers directly. Non-vulnerability related security issues including ideas for new or improved security features are welcome on GitHub Issues. ## Security updates, alerts and bulletins Security updates will be released on a regular cadence. Many of our projects will typically release security fixes in conjunction with the Oracle Critical Patch Update program. Additional information, including past advisories, is available on our [security alerts][4] page. ## Security-related information We will provide security related information such as a threat model, considerations for secure use, or any known security issues in our documentation. Please note that labs and sample code are intended to demonstrate a concept and may not be sufficiently hardened for production use. [1]: mailto:secalert_us@oracle.com [2]: https://www.oracle.com/corporate/security-practices/assurance/vulnerability/reporting.html [3]: https://www.oracle.com/security-alerts/encryptionkey.html [4]: https://www.oracle.com/security-alerts/ 0707010000000F000081A400000000000000000000000165FC3A6A000067A2000000000000000000000000000000000000003100000000ktls-utils-0.10+12.gc3923f7/THIRD_PARTY_LICENSES GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 Copyright (C) 1991, 1999 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. [This is the first released version of the Lesser GPL. It also counts as the successor of the GNU Library Public License, version 2, hence the version number 2.1.] Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public Licenses are intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This license, the Lesser General Public License, applies to some specially designated software packages--typically libraries--of the Free Software Foundation and other authors who decide to use it. You can use it too, but we suggest you first think carefully about whether this license or the ordinary General Public License is the better strategy to use in any particular case, based on the explanations below. When we speak of free software, we are referring to freedom of use, 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 this service if you wish); that you receive source code or can get it if you want it; that you can change the software and use pieces of it in new free programs; and that you are informed that you can do these things. To protect your rights, we need to make restrictions that forbid distributors to deny you these rights or to ask you to surrender these rights. These restrictions translate to certain responsibilities for you if you distribute copies of the library or if you modify it. For example, if you distribute copies of the library, whether gratis or for a fee, you must give the recipients all the rights that we gave you. You must make sure that they, too, receive or can get the source code. If you link other code with the library, you must provide complete object files to the recipients, so that they can relink them with the library after making changes to the library and recompiling it. And you must show them these terms so they know their rights. We protect your rights with a two-step method: (1) we copyright the library, and (2) we offer you this license, which gives you legal permission to copy, distribute and/or modify the library. To protect each distributor, we want to make it very clear that there is no warranty for the free library. Also, if the library is modified by someone else and passed on, the recipients should know that what they have is not the original version, so that the original author's reputation will not be affected by problems that might be introduced by others. Finally, software patents pose a constant threat to the existence of any free program. We wish to make sure that a company cannot effectively restrict the users of a free program by obtaining a restrictive license from a patent holder. Therefore, we insist that any patent license obtained for a version of the library must be consistent with the full freedom of use specified in this license. Most GNU software, including some libraries, is covered by the ordinary GNU General Public License. This license, the GNU Lesser General Public License, applies to certain designated libraries, and is quite different from the ordinary General Public License. We use this license for certain libraries in order to permit linking those libraries into non-free programs. When a program is linked with a library, whether statically or using a shared library, the combination of the two is legally speaking a combined work, a derivative of the original library. The ordinary General Public License therefore permits such linking only if the entire combination fits its criteria of freedom. 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Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the library `Frob' (a library for tweaking knobs) written by James Random Hacker. <signature of Ty Coon>, 1 April 1990 Ty Coon, President of Vice That's all there is to it! 07070100000010000081ED00000000000000000000000165FC3A6A00000407000000000000000000000000000000000000002700000000ktls-utils-0.10+12.gc3923f7/autogen.sh#!/bin/sh -e # # Reset the state of the autotools infrastructure # # Copyright (c) 2022 Oracle and/or its affiliates. # # ktls-utils 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; version 2. # # 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, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301, USA. # GEN="compile config.guess config.sub depcomp install-sh \ missing aclocal.m4 configure config.h.in \ autom4te.cache" for FILE in $GEN do rm -rf $FILE done rm -f ktls-utils*.tar.gz aclocal autoheader automake --add-missing --copy --gnu autoconf exit 0 07070100000011000081A400000000000000000000000165FC3A6A00000AAB000000000000000000000000000000000000002900000000ktls-utils-0.10+12.gc3923f7/configure.acdnl Process this file with autoconf to produce a configure script. dnl dnl Copyright (c) 2022 Oracle and/or its affiliates. dnl dnl ktls-utils is free software; you can redistribute it and/or dnl modify it under the terms of the GNU General Public License as dnl published by the Free Software Foundation; version 2. dnl dnl This program is distributed in the hope that it will be useful, dnl but WITHOUT ANY WARRANTY; without even the implied warranty of dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU dnl General Public License for more details. dnl dnl You should have received a copy of the GNU General Public License dnl along with this program; if not, write to the Free Software dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA dnl 02110-1301, USA. dnl AC_PREREQ([2.69]) AC_INIT([ktls-utils],[0.11-dev],[kernel-tls-handshake@lists.linux.dev]) AM_INIT_AUTOMAKE AM_SILENT_RULES([yes]) AC_CONFIG_SRCDIR([config.h.in]) AC_CONFIG_HEADERS([config.h]) AC_PREFIX_DEFAULT(/usr) AC_USE_SYSTEM_EXTENSIONS AC_LANG(C) AC_PROG_CC AC_PROG_INSTALL unitdir=/usr/lib/systemd/system AC_ARG_WITH(systemd, [AS_HELP_STRING([--with-systemd@<:@=unit-dir-path@:>@], [install systemd unit files @<:@Default: no, and path defaults to /usr/lib/systemd/system if not given@:>@])], if test "$withval" != "no" ; then use_systemd=1 if test "$withval" != "yes" ; then unitdir=$withval fi else use_systemd=0 fi ) AM_CONDITIONAL(INSTALL_SYSTEMD, [test "$use_systemd" = 1]) AC_SUBST(unitdir) PKG_PROG_PKG_CONFIG([0.9.0]) PKG_CHECK_MODULES([LIBGNUTLS], [gnutls >= 3.3.0]) AC_SUBST([LIBGNUTLS_CFLAGS]) AC_SUBST([LIBGNUTLS_LIBS]) PKG_CHECK_MODULES([LIBKEYUTILS], [libkeyutils]) AC_SUBST([LIBKEYUTILS_CFLAGS]) AC_SUBST([LIBKEYUTILS_LIBS]) PKG_CHECK_MODULES([GLIB], glib-2.0 >= 2.6) AC_SUBST([GLIB_CFLAGS]) AC_SUBST([GLIB_LIBS]) PKG_CHECK_MODULES([LIBNL3], libnl-3.0 >= 3.1) AC_SUBST([LIBNL3_CFLAGS]) AC_SUBST([LIBNL3_LIBS]) AC_CHECK_LIB([gnutls], [gnutls_transport_is_ktls_enabled], [AC_DEFINE([HAVE_GNUTLS_TRANSPORT_IS_KTLS_ENABLED], [1], [Define to 1 if you have the gnutls_transport_is_ktls_enabled function.])]) AC_CHECK_LIB([gnutls], [gnutls_protocol_set_enabled], [AC_DEFINE([HAVE_GNUTLS_PROTOCOL_SET_ENABLED], [1], [Define to 1 if you have the gnutls_protocol_set_enabled function.])]) AC_CHECK_LIB([gnutls], [gnutls_get_system_config_file], [AC_DEFINE([HAVE_GNUTLS_GET_SYSTEM_CONFIG_FILE], [1], [Define to 1 if you have the gnutls_get_system_config_file function.])]) AC_SUBST([AM_CPPFLAGS]) AC_CONFIG_FILES([Makefile src/Makefile src/tlshd/Makefile systemd/Makefile]) AC_OUTPUT 07070100000012000041ED00000000000000000000000265FC3A6A00000000000000000000000000000000000000000000002000000000ktls-utils-0.10+12.gc3923f7/src07070100000013000081A400000000000000000000000165FC3A6A000002F0000000000000000000000000000000000000002C00000000ktls-utils-0.10+12.gc3923f7/src/Makefile.am# # Copyright (c) 2022 Oracle and/or its affiliates. # # ktls-utils 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; version 2. # # 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, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301, USA. # SUBDIRS = tlshd MAINTAINERCLEANFILES = Makefile.in 07070100000014000041ED00000000000000000000000265FC3A6A00000000000000000000000000000000000000000000002600000000ktls-utils-0.10+12.gc3923f7/src/tlshd07070100000015000081A400000000000000000000000165FC3A6A00000006000000000000000000000000000000000000003100000000ktls-utils-0.10+12.gc3923f7/src/tlshd/.gitignoretlshd 07070100000016000081A400000000000000000000000165FC3A6A000004D1000000000000000000000000000000000000003200000000ktls-utils-0.10+12.gc3923f7/src/tlshd/Makefile.am# # Copyright (c) 2022 Oracle and/or its affiliates. # # ktls-utils 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; version 2. # # 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, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301, USA. # dist_sysconf_DATA = tlshd.conf man5_MANS = tlshd.conf.man man8_MANS = tlshd.man EXTRA_DIST = $(man5_MANS) $(man8_MANS) sbin_PROGRAMS = tlshd tlshd_CFLAGS = -Werror -Wall -Wextra $(LIBGNUTLS_CFLAGS) \ $(LIBKEYUTILS_CFLAGS) $(GLIB_CFLAGS) $(LIBNL3_CFLAGS) tlshd_SOURCES = client.c config.c handshake.c keyring.c ktls.c log.c \ main.c netlink.c netlink.h server.c tlshd.h tlshd_LDADD = $(LIBGNUTLS_LIBS) $(LIBKEYUTILS_LIBS) $(GLIB_LIBS) \ $(LIBNL3_LIBS) -lnl-genl-3 MAINTAINERCLEANFILES = Makefile.in cscope.out 07070100000017000081A400000000000000000000000165FC3A6A00003061000000000000000000000000000000000000002F00000000ktls-utils-0.10+12.gc3923f7/src/tlshd/client.c/* * Perform a TLSv1.3 handshake. * * Copyright (c) 2022 Oracle and/or its affiliates. * Copyright (c) 2022 SUSE LLC. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include <sys/types.h> #include <sys/socket.h> #include <stdbool.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #include <stdio.h> #include <errno.h> #include <keyutils.h> #include <gnutls/gnutls.h> #include <gnutls/abstract.h> #include <gnutls/x509.h> #include <linux/tls.h> #include <glib.h> #include "tlshd.h" #include "netlink.h" static void tlshd_client_anon_handshake(struct tlshd_handshake_parms *parms) { gnutls_certificate_credentials_t xcred; gnutls_session_t session; unsigned int flags; char *cafile; int ret; ret = gnutls_certificate_allocate_credentials(&xcred); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return; } /* * Don't reject self-signed server certificates. */ gnutls_certificate_set_verify_flags(xcred, GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD2 | GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD5); gnutls_certificate_set_flags(xcred, GNUTLS_CERTIFICATE_SKIP_KEY_CERT_MATCH | GNUTLS_CERTIFICATE_SKIP_OCSP_RESPONSE_CHECK); if (tlshd_config_get_client_truststore(&cafile)) { ret = gnutls_certificate_set_x509_trust_file(xcred, cafile, GNUTLS_X509_FMT_PEM); free(cafile); } else ret = gnutls_certificate_set_x509_system_trust(xcred); if (ret < 0) { tlshd_log_gnutls_error(ret); goto out_free_creds; } tlshd_log_debug("System trust: Loaded %d certificate(s).", ret); flags = GNUTLS_CLIENT; ret = gnutls_init(&session, flags); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } gnutls_transport_set_int(session, parms->sockfd); gnutls_server_name_set(session, GNUTLS_NAME_DNS, parms->peername, strlen(parms->peername)); gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, xcred); ret = gnutls_set_default_priority(session); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } ret = tlshd_gnutls_priority_set(session, parms, 0); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } gnutls_session_set_verify_cert(session, parms->peername, 0); tlshd_start_tls_handshake(session, parms); gnutls_deinit(session); out_free_creds: gnutls_certificate_free_credentials(xcred); } static gnutls_privkey_t tlshd_privkey; static unsigned int tlshd_certs_len = TLSHD_MAX_CERTS; static gnutls_pcert_st tlshd_certs[TLSHD_MAX_CERTS]; /* * XXX: After this point, tlshd_certs should be deinited on error. */ static bool tlshd_x509_client_get_certs(struct tlshd_handshake_parms *parms) { if (parms->x509_cert != TLS_NO_CERT) return tlshd_keyring_get_certs(parms->x509_cert, tlshd_certs, &tlshd_certs_len); return tlshd_config_get_client_certs(tlshd_certs, &tlshd_certs_len); } /* * XXX: After this point, tlshd_privkey should be deinited on error. */ static bool tlshd_x509_client_get_privkey(struct tlshd_handshake_parms *parms) { if (parms->x509_privkey != TLS_NO_PRIVKEY) return tlshd_keyring_get_privkey(parms->x509_privkey, &tlshd_privkey); return tlshd_config_get_client_privkey(&tlshd_privkey); } static void tlshd_x509_log_issuers(const gnutls_datum_t *req_ca_rdn, int nreqs) { char issuer_dn[256]; size_t len; int i, ret; if (nreqs < 1) return; tlshd_log_debug("Server's trusted authorities:"); for (i = 0; i < nreqs; i++) { len = sizeof(issuer_dn); ret = gnutls_x509_rdn_get(&req_ca_rdn[i], issuer_dn, &len); if (ret >= 0) tlshd_log_debug(" [%d]: %s", i, issuer_dn); } } /** * tlshd_x509_retrieve_key_cb - Initialize client's x.509 identity * * Callback function is of type gnutls_certificate_retrieve_function2 * * Initial implementation based on the cert_callback() function in * gnutls/doc/examples/ex-cert-select.c. * * Sketched-in and untested. * * Return values: * %0: Success; output parameters are set accordingly * %-1: Failure */ static int tlshd_x509_retrieve_key_cb(gnutls_session_t session, const gnutls_datum_t *req_ca_rdn, int nreqs, __attribute__ ((unused)) const gnutls_pk_algorithm_t *pk_algos, __attribute__ ((unused)) int pk_algos_length, gnutls_pcert_st **pcert, unsigned int *pcert_length, gnutls_privkey_t *privkey) { gnutls_certificate_type_t type; tlshd_x509_log_issuers(req_ca_rdn, nreqs); type = gnutls_certificate_type_get(session); if (type != GNUTLS_CRT_X509) return -1; *pcert_length = tlshd_certs_len; *pcert = tlshd_certs; *privkey = tlshd_privkey; return 0; } /** * tlshd_client_x509_verify_function - Verify remote's x.509 certificate * @session: session in the midst of a handshake * * Return values: * %GNUTLS_E_SUCCESS: Incoming certificate has been successfully verified * %GNUTLS_E_CERTIFICATE_ERROR: certificate verification failed */ static int tlshd_client_x509_verify_function(gnutls_session_t session) { struct tlshd_handshake_parms *parms; const gnutls_datum_t *peercerts; gnutls_certificate_type_t type; unsigned int i, status; gnutls_datum_t out; int ret; parms = gnutls_session_get_ptr(session); ret = gnutls_certificate_verify_peers3(session, parms->peername, &status); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return GNUTLS_E_CERTIFICATE_ERROR; } type = gnutls_certificate_type_get(session); gnutls_certificate_verification_status_print(status, type, &out, 0); tlshd_log_debug("%s", out.data); gnutls_free(out.data); if (status) return GNUTLS_E_CERTIFICATE_ERROR; /* To do: Examine extended key usage information here, if we want * to get picky. Kernel would have to tell us what to look for * via a netlink attribute. */ peercerts = gnutls_certificate_get_peers(session, &parms->num_remote_peerids); if (!peercerts || parms->num_remote_peerids == 0) { tlshd_log_debug("The peer cert list is empty.\n"); return GNUTLS_E_CERTIFICATE_ERROR; } tlshd_log_debug("The peer offered %u certificate(s).\n", parms->num_remote_peerids); if (parms->num_remote_peerids > ARRAY_SIZE(parms->remote_peerid)) parms->num_remote_peerids = ARRAY_SIZE(parms->remote_peerid); for (i = 0; i < parms->num_remote_peerids; i++) { gnutls_x509_crt_t cert; gnutls_x509_crt_init(&cert); ret = gnutls_x509_crt_import(cert, &peercerts[i], GNUTLS_X509_FMT_DER); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); gnutls_x509_crt_deinit(cert); return GNUTLS_E_CERTIFICATE_ERROR; } parms->remote_peerid[i] = tlshd_keyring_create_cert(cert, parms->peername); gnutls_x509_crt_deinit(cert); } return GNUTLS_E_SUCCESS; } static void tlshd_client_x509_handshake(struct tlshd_handshake_parms *parms) { gnutls_certificate_credentials_t xcred; gnutls_session_t session; unsigned int flags; char *cafile; int ret; ret = gnutls_certificate_allocate_credentials(&xcred); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return; } if (tlshd_config_get_client_truststore(&cafile)) { ret = gnutls_certificate_set_x509_trust_file(xcred, cafile, GNUTLS_X509_FMT_PEM); free(cafile); } else ret = gnutls_certificate_set_x509_system_trust(xcred); if (ret < 0) { tlshd_log_gnutls_error(ret); goto out_free_creds; } tlshd_log_debug("System trust: Loaded %d certificate(s).", ret); if (!tlshd_x509_client_get_certs(parms)) goto out_free_creds; if (!tlshd_x509_client_get_privkey(parms)) goto out_free_creds; gnutls_certificate_set_retrieve_function2(xcred, tlshd_x509_retrieve_key_cb); flags = GNUTLS_CLIENT; ret = gnutls_init(&session, flags); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } gnutls_transport_set_int(session, parms->sockfd); gnutls_session_set_ptr(session, parms); ret = gnutls_server_name_set(session, GNUTLS_NAME_DNS, parms->peername, strlen(parms->peername)); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } ret = gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, xcred); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } ret = tlshd_gnutls_priority_set(session, parms, 0); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } gnutls_certificate_set_verify_function(xcred, tlshd_client_x509_verify_function); tlshd_start_tls_handshake(session, parms); gnutls_deinit(session); out_free_creds: gnutls_certificate_free_credentials(xcred); } static void tlshd_client_psk_handshake_one(struct tlshd_handshake_parms *parms, key_serial_t peerid) { gnutls_psk_client_credentials_t psk_cred; gnutls_session_t session; gnutls_datum_t key; unsigned int flags; char *identity; int ret; if (!tlshd_keyring_get_psk_username(peerid, &identity)) { tlshd_log_error("Failed to get key identity"); return; } if (!tlshd_keyring_get_psk_key(peerid, &key)) { tlshd_log_error("Failed to read key"); free(identity); return; } ret = gnutls_psk_allocate_client_credentials(&psk_cred); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); free(identity); return; } ret = gnutls_psk_set_client_credentials(psk_cred, identity, &key, GNUTLS_PSK_KEY_RAW); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } flags = GNUTLS_CLIENT; ret = gnutls_init(&session, flags); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } gnutls_transport_set_int(session, parms->sockfd); gnutls_session_set_ptr(session, parms); gnutls_credentials_set(session, GNUTLS_CRD_PSK, psk_cred); ret = tlshd_gnutls_priority_set(session, parms, key.size); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } tlshd_log_debug("start ClientHello handshake"); tlshd_start_tls_handshake(session, parms); if (!parms->session_status) { /* PSK uses the same identity for both client and server */ parms->num_remote_peerids = 1; parms->remote_peerid[0] = peerid; } gnutls_deinit(session); out_free_creds: gnutls_psk_free_client_credentials(psk_cred); free(identity); } static void tlshd_client_psk_handshake(struct tlshd_handshake_parms *parms) { unsigned int i; if (!parms->peerids) { tlshd_log_error("No key identities"); return; } /* * GnuTLS does not yet support multiple offered PskIdentities. * Retry ClientHello with each identity on the kernel's list. */ for (i = 0; i < parms->num_peerids; i++) { tlshd_client_psk_handshake_one(parms, parms->peerids[i]); if (parms->session_status != EACCES) break; } } /** * tlshd_clienthello_handshake - send a TLSv1.3 ClientHello * @parms: handshake parameters * */ void tlshd_clienthello_handshake(struct tlshd_handshake_parms *parms) { int ret; ret = gnutls_global_init(); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return; } if (tlshd_tls_debug) gnutls_global_set_log_level(tlshd_tls_debug); gnutls_global_set_log_function(tlshd_gnutls_log_func); gnutls_global_set_audit_log_function(tlshd_gnutls_audit_func); #ifdef HAVE_GNUTLS_GET_SYSTEM_CONFIG_FILE tlshd_log_debug("System config file: %s", gnutls_get_system_config_file()); #endif switch (parms->auth_mode) { case HANDSHAKE_AUTH_UNAUTH: tlshd_client_anon_handshake(parms); break; case HANDSHAKE_AUTH_X509: tlshd_client_x509_handshake(parms); break; case HANDSHAKE_AUTH_PSK: tlshd_client_psk_handshake(parms); break; default: tlshd_log_debug("Unrecognized auth mode (%d)", parms->auth_mode); } gnutls_global_deinit(); } 07070100000018000081A400000000000000000000000165FC3A6A00002794000000000000000000000000000000000000002F00000000ktls-utils-0.10+12.gc3923f7/src/tlshd/config.c/* * Parse tlshd's config file. * * Copyright (c) 2022 Oracle and/or its affiliates. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include <sys/types.h> #include <sys/socket.h> #include <sys/stat.h> #include <sys/syscall.h> #include <stdbool.h> #include <unistd.h> #include <stdlib.h> #include <stdio.h> #include <fcntl.h> #include <errno.h> #include <string.h> #include <libgen.h> #include <keyutils.h> #include <gnutls/gnutls.h> #include <gnutls/abstract.h> #include <netlink/netlink.h> #include <glib.h> #include "tlshd.h" static GKeyFile *tlshd_configuration; /** * tlshd_config_init - Read tlshd's config file * @pathname: Pathname to config file * * Return values: * %true: Config file read successfully * %false: Unable to read config file */ bool tlshd_config_init(const gchar *pathname) { gchar **keyrings; gsize i, length; GError *error; gint tmp; tlshd_configuration = g_key_file_new(); error = NULL; if (!g_key_file_load_from_file(tlshd_configuration, pathname, G_KEY_FILE_KEEP_COMMENTS, &error)) { tlshd_log_gerror("Failed to load config file", error); g_error_free(error); return false; } /* * These calls return zero if the key isn't present or the * specified key value is invalid. */ tlshd_debug = g_key_file_get_integer(tlshd_configuration, "debug", "loglevel", NULL); tlshd_tls_debug = g_key_file_get_integer(tlshd_configuration, "debug", "tls", NULL); nl_debug = g_key_file_get_integer(tlshd_configuration, "debug", "nl", NULL); tmp = g_key_file_get_integer(tlshd_configuration, "debug", "delay_done", NULL); tlshd_delay_done = tmp > 0 ? tmp : 0; keyrings = g_key_file_get_string_list(tlshd_configuration, "authenticate", "keyrings", &length, NULL); if (keyrings) { for (i = 0; i < length; i++) { tlshd_keyring_link_session(keyrings[i]); } g_strfreev(keyrings); } return true; } void tlshd_config_shutdown(void) { g_key_file_free(tlshd_configuration); } /* * Expected file attributes */ #define TLSHD_OWNER 0 /* root */ #define TLSHD_CERT_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) #define TLSHD_PRIVKEY_MODE (S_IRUSR|S_IWUSR) /* * On success, caller must release buffer returned in @data by calling free(3) */ static bool tlshd_config_read_datum(const char *pathname, gnutls_datum_t *data, uid_t owner, mode_t mode) { struct stat statbuf; unsigned int size; void *buf; bool ret; int fd; ret = false; fd = open(pathname, O_RDONLY); if (fd == -1) { tlshd_log_perror("open"); goto out; } if (fstat(fd, &statbuf)) { tlshd_log_perror("stat"); goto out_close; } if (statbuf.st_size < 0 || statbuf.st_size > INT_MAX) { tlshd_log_error("Bad config file size: %lld", statbuf.st_size); goto out_close; } size = (unsigned int)statbuf.st_size; if (statbuf.st_uid != owner) tlshd_log_notice("File %s: expected owner %u", pathname, owner); if ((statbuf.st_mode & ALLPERMS) != mode) tlshd_log_notice("File %s: expected mode %o", pathname, mode); buf = malloc(size); if (!buf) { errno = ENOMEM; tlshd_log_perror("malloc"); goto out_close; } if (read(fd, buf, size) == -1) { tlshd_log_perror("read"); free(buf); goto out_close; } data->data = buf; data->size = size; ret = true; out_close: close(fd); out: return ret; } /** * tlshd_config_get_client_truststore - Get truststore for ClientHello from .conf * @bundle: OUT: pathname to truststore * * Return values: * %false: pathname not retrieved * %true: pathname retrieved successfully; caller must free @bundle using free(3) */ bool tlshd_config_get_client_truststore(char **bundle) { GError *error = NULL; gchar *pathname; pathname = g_key_file_get_string(tlshd_configuration, "authenticate.client", "x509.truststore", &error); if (!pathname) { g_error_free(error); return false; } *bundle = strdup(pathname); g_free(pathname); if (!*bundle) return false; tlshd_log_debug("Client x.509 truststore is %s", *bundle); return true; } /** * tlshd_config_get_client_certs - Get certs for ClientHello from .conf * @certs: OUT: in-memory certificates * @certs_len: IN: maximum number of certs to get, OUT: number of certs found * * Return values: * %true: certificate retrieved successfully * %false: certificate not retrieved */ bool tlshd_config_get_client_certs(gnutls_pcert_st *certs, unsigned int *certs_len) { GError *error = NULL; gnutls_datum_t data; gchar *pathname; int ret; pathname = g_key_file_get_string(tlshd_configuration, "authenticate.client", "x509.certificate", &error); if (!pathname) { g_error_free(error); return false; } if (!tlshd_config_read_datum(pathname, &data, TLSHD_OWNER, TLSHD_CERT_MODE)) { g_free(pathname); return false; } /* Config file supports only PEM-encoded certificates */ ret = gnutls_pcert_list_import_x509_raw(certs, certs_len, &data, GNUTLS_X509_FMT_PEM, 0); free(data.data); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); g_free(pathname); return false; } tlshd_log_debug("Retrieved %u x.509 client certificate(s) from %s", *certs_len, pathname); g_free(pathname); return true; } /** * tlshd_config_get_client_privkey - Get private key for ClientHello from .conf * @privkey: OUT: in-memory private key * * Return values: * %true: private key retrieved successfully * %false: private key not retrieved */ bool tlshd_config_get_client_privkey(gnutls_privkey_t *privkey) { GError *error = NULL; gnutls_datum_t data; gchar *pathname; int ret; pathname = g_key_file_get_string(tlshd_configuration, "authenticate.client", "x509.private_key", &error); if (!pathname) { g_error_free(error); return false; } if (!tlshd_config_read_datum(pathname, &data, TLSHD_OWNER, TLSHD_PRIVKEY_MODE)) { g_free(pathname); return false; } ret = gnutls_privkey_init(privkey); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); free(data.data); g_free(pathname); return false; } /* Config file supports only PEM-encoded keys */ ret = gnutls_privkey_import_x509_raw(*privkey, &data, GNUTLS_X509_FMT_PEM, NULL, 0); free(data.data); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); g_free(pathname); return false; } tlshd_log_debug("Retrieved private key from %s", pathname); g_free(pathname); return true; } /** * tlshd_config_get_server_truststore - Get truststore for ServerHello from .conf * @bundle: OUT: pathname to truststore * * Return values: * %false: pathname not retrieved * %true: pathname retrieved successfully; caller must free @bundle using free(3) */ bool tlshd_config_get_server_truststore(char **bundle) { GError *error = NULL; gchar *pathname; pathname = g_key_file_get_string(tlshd_configuration, "authenticate.server", "x509.truststore", &error); if (!pathname) { g_error_free(error); return false; } *bundle = strdup(pathname); g_free(pathname); if (!*bundle) return false; tlshd_log_debug("Server x.509 truststore is %s", *bundle); return true; } /** * tlshd_config_get_server_certs - Get certs for ServerHello from .conf * @certs: OUT: in-memory certificates * @certs_len: IN: maximum number of certs to get, OUT: number of certs found * * Return values: * %true: certificate retrieved successfully * %false: certificate not retrieved */ bool tlshd_config_get_server_certs(gnutls_pcert_st *certs, unsigned int *certs_len) { GError *error = NULL; gnutls_datum_t data; gchar *pathname; int ret; pathname = g_key_file_get_string(tlshd_configuration, "authenticate.server", "x509.certificate", &error); if (!pathname) { g_error_free(error); return false; } if (!tlshd_config_read_datum(pathname, &data, TLSHD_OWNER, TLSHD_CERT_MODE)) { g_free(pathname); return false; } /* Config file supports only PEM-encoded certificates */ ret = gnutls_pcert_list_import_x509_raw(certs, certs_len, &data, GNUTLS_X509_FMT_PEM, 0); free(data.data); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); g_free(pathname); return false; } tlshd_log_debug("Retrieved %u x.509 server certificate(s) from %s", *certs_len, pathname); return true; } /** * tlshd_config_get_server_privkey - Get private key for ServerHello from .conf * @privkey: OUT: in-memory private key * * Return values: * %true: private key retrieved successfully * %false: private key not retrieved */ bool tlshd_config_get_server_privkey(gnutls_privkey_t *privkey) { GError *error = NULL; gnutls_datum_t data; gchar *pathname; int ret; pathname = g_key_file_get_string(tlshd_configuration, "authenticate.server", "x509.private_key", &error); if (!pathname) { g_error_free(error); return false; } if (!tlshd_config_read_datum(pathname, &data, TLSHD_OWNER, TLSHD_PRIVKEY_MODE)) { g_free(pathname); return false; } ret = gnutls_privkey_init(privkey); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); free(data.data); g_free(pathname); return false; } /* Config file supports only PEM-encoded keys */ ret = gnutls_privkey_import_x509_raw(*privkey, &data, GNUTLS_X509_FMT_PEM, NULL, 0); free(data.data); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); g_free(pathname); return false; } tlshd_log_debug("Retrieved private key from %s", pathname); g_free(pathname); return true; } 07070100000019000081A400000000000000000000000165FC3A6A00000D69000000000000000000000000000000000000003200000000ktls-utils-0.10+12.gc3923f7/src/tlshd/handshake.c/* * Service a request for a TLS handshake on behalf of an * in-kernel TLS consumer. * * Copyright (c) 2022 Oracle and/or its affiliates. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include <sys/types.h> #include <sys/socket.h> #include <stdbool.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #include <stdio.h> #include <errno.h> #include <netinet/tcp.h> #include <netdb.h> #include <keyutils.h> #include <gnutls/gnutls.h> #include <gnutls/abstract.h> #include <glib.h> #include "tlshd.h" #include "netlink.h" static void tlshd_set_nagle(gnutls_session_t session, int val) { int ret; ret = setsockopt(gnutls_transport_get_int(session), IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val)); if (ret < 0) tlshd_log_perror("setsockopt (NODELAY)"); } static void tlshd_save_nagle(gnutls_session_t session, int *saved) { socklen_t len; int ret; len = sizeof(saved); ret = getsockopt(gnutls_transport_get_int(session), IPPROTO_TCP, TCP_NODELAY, saved, &len); if (ret < 0) { tlshd_log_perror("getsockopt (NODELAY)"); saved = 0; return; } tlshd_set_nagle(session, 1); } /** * tlshd_start_tls_handshake - Drive the handshake interaction * @session: TLS session to initialize * @parms: handshake parameters * */ void tlshd_start_tls_handshake(gnutls_session_t session, struct tlshd_handshake_parms *parms) { int saved, ret; char *desc; gnutls_handshake_set_timeout(session, parms->timeout_ms); tlshd_save_nagle(session, &saved); do { ret = gnutls_handshake(session); } while (ret < 0 && !gnutls_error_is_fatal(ret)); tlshd_set_nagle(session, saved); if (ret < 0) { switch (ret) { case GNUTLS_E_CERTIFICATE_VERIFICATION_ERROR: tlshd_log_cert_verification_error(session); break; default: tlshd_log_gnutls_error(ret); } parms->session_status = EACCES; return; } desc = gnutls_session_get_desc(session); tlshd_log_debug("Session description: %s", desc); gnutls_free(desc); parms->session_status = tlshd_initialize_ktls(session); } /** * tlshd_service_socket - Service a kernel socket needing a key operation * */ void tlshd_service_socket(void) { struct tlshd_handshake_parms parms; if (tlshd_genl_get_handshake_parms(&parms) != 0) goto out; switch (parms.handshake_type) { case HANDSHAKE_MSG_TYPE_CLIENTHELLO: tlshd_clienthello_handshake(&parms); break; case HANDSHAKE_MSG_TYPE_SERVERHELLO: tlshd_serverhello_handshake(&parms); break; default: tlshd_log_debug("Unrecognized handshake type (%d)", parms.handshake_type); } out: tlshd_genl_done(&parms); free(parms.peerids); if (parms.session_status) { tlshd_log_failure(parms.peername, parms.peeraddr, parms.peeraddr_len); return; } tlshd_log_success(parms.peername, parms.peeraddr, parms.peeraddr_len); } 0707010000001A000081A400000000000000000000000165FC3A6A00001B75000000000000000000000000000000000000003000000000ktls-utils-0.10+12.gc3923f7/src/tlshd/keyring.c/* * Scrape authentication information from kernel keyring. * * Copyright (c) 2022 Oracle and/or its affiliates. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include <sys/types.h> #include <sys/socket.h> #include <stdbool.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #include <stdio.h> #include <errno.h> #include <netdb.h> #include <keyutils.h> #include <gnutls/gnutls.h> #include <gnutls/abstract.h> #include <glib.h> #include "tlshd.h" /** * tlshd_keyring_get_psk_username - Retrieve username for PSK handshake * @serial: Key serial number to look up * @username: On success, filled in with NUL-terminated user name * * Caller must use gnutls_free() to free @username when finished. * * Return values: * %true: Success; @username has been initialized * %false: Failure */ bool tlshd_keyring_get_psk_username(key_serial_t serial, char **username) { char *ptr, *psk_name; int ret; ret = keyctl_describe_alloc(serial, &psk_name); if (ret < 0) { tlshd_log_perror("keyctl_describe_alloc"); tlshd_log_debug("Failed to describe key %08x.", serial); return false; } ptr = strrchr(psk_name, ';'); if (!ptr) ptr = psk_name; else ptr++; *username = gnutls_malloc(strlen(ptr) + 1); if (!*username) { tlshd_log_error("Failed to allocate TLS psk identity."); free(psk_name); return false; } tlshd_log_debug("Using psk identity %s\n", ptr); strcpy(*username, ptr); free(psk_name); return true; } /** * tlshd_keyring_get_psk_key - Retrieve pre-shared key for PSK handshake * @serial: Key serial number to look up * @key: On success, filled in with pre-shared key * * Caller must use free() to free @key->data when finished. * * Return values: * %true: Success; @key has been initialized * %false: Failure */ bool tlshd_keyring_get_psk_key(key_serial_t serial, gnutls_datum_t *key) { void *tmp; int ret; key->data = NULL; key->size = 0; ret = keyctl_read_alloc(serial, &tmp); if (ret < 0) { tlshd_log_perror("keyctl_read_alloc"); tlshd_log_error("Failed to read TLS psk data."); return false; } key->data = tmp; key->size = (unsigned int)ret; return true; } /** * tlshd_keyring_get_privkey - Retrieve privkey for x.509 handshake * @serial: Key serial number to look up * @privkey: On success, filled in with a private key * * Caller must use gnutls_privkey_deinit() to free @privkey when finished. * * Return values: * %true: Success; @privkey has been initialized * %false: Failure */ bool tlshd_keyring_get_privkey(key_serial_t serial, gnutls_privkey_t *privkey) { gnutls_datum_t data; void *tmp; int ret; ret = keyctl_read_alloc(serial, &tmp); if (ret < 0) { tlshd_log_perror("keyctl_read_alloc"); tlshd_log_error("Failed to read TLS x.509 private key."); return false; } data.data = tmp; data.size = (unsigned int)ret; ret = gnutls_privkey_init(privkey); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); free(tmp); return false; } /* Handshake upcall passes only DER-encoded keys */ ret = gnutls_privkey_import_x509_raw(*privkey, &data, GNUTLS_X509_FMT_DER, NULL, 0); free(tmp); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return false; } tlshd_log_debug("Retrieved private key"); return true; } /** * tlshd_keyring_get_certs - Retrieve certs for x.509 handshake * @serial: Key serial number to look up * @certs: On success, filled in with certificates * @certs_len: IN: maximum number of certs to get, OUT: number of certs found * * Caller must use gnutls_pcert_deinit() to free @cert when finished. * * Return values: * %true: Success; @cert has been initialized * %false: Failure */ bool tlshd_keyring_get_certs(key_serial_t serial, gnutls_pcert_st *certs, unsigned int *certs_len) { gnutls_datum_t data; void *tmp; int ret; if (*certs_len == 0) { tlshd_log_error("tlshd_keyring_get_cert called with zero array."); return false; } ret = keyctl_read_alloc(serial, &tmp); if (ret < 0) { tlshd_log_perror("keyctl_read_alloc"); tlshd_log_error("Failed to read TLS x.509 certificate."); return false; } data.data = tmp; data.size = (unsigned int)ret; /* Handshake upcall passes only DER-encoded certificates */ ret = gnutls_pcert_import_x509_raw(certs, &data, GNUTLS_X509_FMT_DER, 0); free(tmp); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return false; } *certs_len = 1; tlshd_log_debug("Retrieved %u x.509 certificate(s) from keyring", *certs_len); return true; } /** * tlshd_keyring_create_cert - Create key containing peer's certificate * @cert: Initialized x.509 certificate * @peername: hostname of the remote peer * * Returns a positive key serial number on success; otherwise * TLS_NO_PEERID. */ key_serial_t tlshd_keyring_create_cert(gnutls_x509_crt_t cert, const char *peername) { key_serial_t serial = TLS_NO_PEERID; char description[NI_MAXHOST + 10]; gnutls_datum_t out; int len, ret; len = snprintf(description, sizeof(description) - 1, "TLS x509 %s", peername); if (len < 0 || (size_t)len >= sizeof(description)) { tlshd_log_error("Failed to construct key description."); goto out; } ret = gnutls_x509_crt_export2(cert, GNUTLS_X509_FMT_DER, &out); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out; } serial = add_key("asymmetric", description, out.data, out.size, KEY_SPEC_USER_KEYRING); if (serial == -1) { tlshd_log_perror("add_key"); serial = TLS_NO_PEERID; } gnutls_free(out.data); out: return serial; } /** * tlshd_keyring_link_session - Link a keyring into the session keyring * @serial: serial number of the keyring to be linked * * Returns 0 on success and -1 on error. */ int tlshd_keyring_link_session(const char *keyring) { key_serial_t serial; long ret; if (!keyring) { tlshd_log_error("No keyring specified"); errno = -EINVAL; return -1; } serial = find_key_by_type_and_desc("keyring", keyring, 0); if (!serial) { tlshd_log_debug("Failed to lookup keyring '%s'\n", keyring); errno = -ENOKEY; return -1; } ret = keyctl_link(serial, KEY_SPEC_SESSION_KEYRING); if (ret < 0) { tlshd_log_debug("Failed to link keyring %s (%lx) error %d\n", keyring, serial, errno); return -1; } tlshd_log_debug("Keyring '%s' linked into our session keyring.\n", keyring); return 0; } 0707010000001B000081A400000000000000000000000165FC3A6A00003BD5000000000000000000000000000000000000002D00000000ktls-utils-0.10+12.gc3923f7/src/tlshd/ktls.c/* * Initialize a kTLS socket. In some cases initialization might * be handled by the TLS library. * * Copyright (c) 2022 Oracle and/or its affiliates. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include <sys/types.h> #include <sys/socket.h> #include <stdbool.h> #include <string.h> #include <errno.h> #include <netinet/tcp.h> #include <keyutils.h> #include <gnutls/gnutls.h> #include <gnutls/socket.h> #include <gnutls/abstract.h> #include <linux/tls.h> #include <glib.h> #include "tlshd.h" #include "netlink.h" static char *tlshd_string_concat(char *str1, const char *str2) { size_t len = 0; char *result; if (!str1 && !str2) return NULL; if (str1) len += strlen(str1); if (str2) len += strlen(str2); result = malloc(len + 1); if (result) { result[0] = '\0'; if (str1) strcat(result, str1); if (str2) strcat(result, str2); } free(str1); return result; } #ifdef HAVE_GNUTLS_TRANSPORT_IS_KTLS_ENABLED static bool tlshd_is_ktls_enabled(gnutls_session_t session, unsigned read) { int ret; ret = gnutls_transport_is_ktls_enabled(session); if (ret == GNUTLS_E_UNIMPLEMENTED_FEATURE) return false; if (read) { if (!(ret & GNUTLS_KTLS_RECV)) return false; tlshd_log_debug("Library has enabled receive kTLS for this session."); } else { if (!(ret & GNUTLS_KTLS_SEND)) return false; tlshd_log_debug("Library has enabled send kTLS for this session."); } return true; } #else static bool tlshd_is_ktls_enabled(__attribute__ ((unused)) gnutls_session_t session, __attribute__ ((unused)) unsigned read) { return false; } #endif static bool tlshd_setsockopt(int sock, unsigned read, const void *info, socklen_t infolen) { int ret; ret = setsockopt(sock, SOL_TLS, read ? TLS_RX : TLS_TX, info, infolen); if (!ret) return true; switch (errno) { case EBADF: case ENOTSOCK: tlshd_log_error("The kernel's socket file descriptor is no longer valid."); break; case EINVAL: case ENOENT: case ENOPROTOOPT: tlshd_log_error("The kernel does not support the requested algorithm."); break; default: tlshd_log_perror("setsockopt"); } return false; } #if defined(TLS_CIPHER_AES_GCM_128) static bool tlshd_set_aes_gcm128_info(gnutls_session_t session, int sock, unsigned read) { struct tls12_crypto_info_aes_gcm_128 info = { .info.version = TLS_1_3_VERSION, .info.cipher_type = TLS_CIPHER_AES_GCM_128, }; unsigned char seq_number[8]; gnutls_datum_t cipher_key; gnutls_datum_t mac_key; gnutls_datum_t iv; int ret; if (tlshd_is_ktls_enabled(session, read)) return true; ret = gnutls_record_get_state(session, read, &mac_key, &iv, &cipher_key, seq_number); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return false; } /* TLSv1.2 generates iv in the kernel */ if (gnutls_protocol_get_version(session) == GNUTLS_TLS1_2) { info.info.version = TLS_1_2_VERSION; memcpy(info.iv, seq_number, TLS_CIPHER_AES_GCM_128_IV_SIZE); } else memcpy(info.iv, iv.data + TLS_CIPHER_AES_GCM_128_SALT_SIZE, TLS_CIPHER_AES_GCM_128_IV_SIZE); memcpy(info.salt, iv.data, TLS_CIPHER_AES_GCM_128_SALT_SIZE); memcpy(info.key, cipher_key.data, TLS_CIPHER_AES_GCM_128_KEY_SIZE); memcpy(info.rec_seq, seq_number, TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE); return tlshd_setsockopt(sock, read, &info, sizeof(info)); } #endif #if defined(TLS_CIPHER_AES_GCM_256) static bool tlshd_set_aes_gcm256_info(gnutls_session_t session, int sock, unsigned read) { struct tls12_crypto_info_aes_gcm_256 info = { .info.version = TLS_1_3_VERSION, .info.cipher_type = TLS_CIPHER_AES_GCM_256, }; unsigned char seq_number[8]; gnutls_datum_t cipher_key; gnutls_datum_t mac_key; gnutls_datum_t iv; int ret; if (tlshd_is_ktls_enabled(session, read)) return true; ret = gnutls_record_get_state(session, read, &mac_key, &iv, &cipher_key, seq_number); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return false; } /* TLSv1.2 generates iv in the kernel */ if (gnutls_protocol_get_version(session) == GNUTLS_TLS1_2) { info.info.version = TLS_1_2_VERSION; memcpy(info.iv, seq_number, TLS_CIPHER_AES_GCM_256_IV_SIZE); } else memcpy(info.iv, iv.data + TLS_CIPHER_AES_GCM_256_SALT_SIZE, TLS_CIPHER_AES_GCM_256_IV_SIZE); memcpy(info.salt, iv.data, TLS_CIPHER_AES_GCM_256_SALT_SIZE); memcpy(info.key, cipher_key.data, TLS_CIPHER_AES_GCM_256_KEY_SIZE); memcpy(info.rec_seq, seq_number, TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE); return tlshd_setsockopt(sock, read, &info, sizeof(info)); } #endif #if defined(TLS_CIPHER_AES_CCM_128) static bool tlshd_set_aes_ccm128_info(gnutls_session_t session, int sock, unsigned read) { struct tls12_crypto_info_aes_ccm_128 info = { .info.version = TLS_1_3_VERSION, .info.cipher_type = TLS_CIPHER_AES_CCM_128, }; unsigned char seq_number[8]; gnutls_datum_t cipher_key; gnutls_datum_t mac_key; gnutls_datum_t iv; int ret; if (tlshd_is_ktls_enabled(session, read)) return true; ret = gnutls_record_get_state(session, read, &mac_key, &iv, &cipher_key, seq_number); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return false; } /* TLSv1.2 generates iv in the kernel */ if (gnutls_protocol_get_version(session) == GNUTLS_TLS1_2) { info.info.version = TLS_1_2_VERSION; memcpy(info.iv, seq_number, TLS_CIPHER_AES_CCM_128_IV_SIZE); } else memcpy(info.iv, iv.data + TLS_CIPHER_AES_CCM_128_SALT_SIZE, TLS_CIPHER_AES_CCM_128_IV_SIZE); memcpy(info.salt, iv.data, TLS_CIPHER_AES_CCM_128_SALT_SIZE); memcpy(info.key, cipher_key.data, TLS_CIPHER_AES_CCM_128_KEY_SIZE); memcpy(info.rec_seq, seq_number, TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE); return tlshd_setsockopt(sock, read, &info, sizeof(info)); } #endif #if defined(TLS_CIPHER_CHACHA20_POLY1305) static bool tlshd_set_chacha20_poly1305_info(gnutls_session_t session, int sock, unsigned read) { struct tls12_crypto_info_chacha20_poly1305 info = { .info.version = TLS_1_3_VERSION, .info.cipher_type = TLS_CIPHER_CHACHA20_POLY1305, }; unsigned char seq_number[8]; gnutls_datum_t cipher_key; gnutls_datum_t mac_key; gnutls_datum_t iv; int ret; if (tlshd_is_ktls_enabled(session, read)) return true; ret = gnutls_record_get_state(session, read, &mac_key, &iv, &cipher_key, seq_number); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return false; } if (gnutls_protocol_get_version(session) == GNUTLS_TLS1_2) info.info.version = TLS_1_2_VERSION; memcpy(info.iv, iv.data, TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE); memcpy(info.key, cipher_key.data, TLS_CIPHER_CHACHA20_POLY1305_KEY_SIZE); memcpy(info.rec_seq, seq_number, TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE); return tlshd_setsockopt(sock, read, &info, sizeof(info)); } #endif /** * tlshd_initialize_ktls - Initialize socket for use by kTLS * @session: TLS session descriptor * * Returns zero on success, or a positive errno value. */ unsigned int tlshd_initialize_ktls(gnutls_session_t session) { int sockin, sockout; if (setsockopt(gnutls_transport_get_int(session), SOL_TCP, TCP_ULP, "tls", sizeof("tls")) == -1) { tlshd_log_perror("setsockopt(TLS_ULP)"); return EIO; } gnutls_transport_get_int2(session, &sockin, &sockout); switch (gnutls_cipher_get(session)) { #if defined(TLS_CIPHER_AES_GCM_128) case GNUTLS_CIPHER_AES_128_GCM: return tlshd_set_aes_gcm128_info(session, sockout, 0) && tlshd_set_aes_gcm128_info(session, sockin, 1) ? 0 : EIO; #endif #if defined(TLS_CIPHER_AES_GCM_256) case GNUTLS_CIPHER_AES_256_GCM: return tlshd_set_aes_gcm256_info(session, sockout, 0) && tlshd_set_aes_gcm256_info(session, sockin, 1) ? 0 : EIO; #endif #if defined(TLS_CIPHER_AES_CCM_128) case GNUTLS_CIPHER_AES_128_CCM: return tlshd_set_aes_ccm128_info(session, sockout, 0) && tlshd_set_aes_ccm128_info(session, sockin, 1) ? 0 : EIO; #endif #if defined(TLS_CIPHER_CHACHA20_POLY1305) case GNUTLS_CIPHER_CHACHA20_POLY1305: return tlshd_set_chacha20_poly1305_info(session, sockout, 0) && tlshd_set_chacha20_poly1305_info(session, sockin, 1) ? 0 : EIO; #endif default: tlshd_log_error("tlshd does not support the requested cipher."); } return EIO; } static char *tlshd_cipher_string_emit(char *pstring, unsigned int cipher) { switch (cipher) { #if defined(TLS_CIPHER_CHACHA20_POLY1305) case GNUTLS_CIPHER_CHACHA20_POLY1305: return tlshd_string_concat(pstring, ":+CHACHA20-POLY1305"); #endif #if defined(TLS_CIPHER_AES_GCM_256) case GNUTLS_CIPHER_AES_256_GCM: return tlshd_string_concat(pstring, ":+AES-256-GCM"); #endif #if defined(TLS_CIPHER_AES_GCM_128) case GNUTLS_CIPHER_AES_128_GCM: return tlshd_string_concat(pstring, ":+AES-128-GCM"); #endif #if defined(TLS_CIPHER_AES_CCM_128) case GNUTLS_CIPHER_AES_128_CCM: return tlshd_string_concat(pstring, ":+AES-128-CCM"); #endif } return pstring; } static gnutls_priority_t tlshd_gnutls_priority_x509; static gnutls_priority_t tlshd_gnutls_priority_psk; static gnutls_priority_t tlshd_gnutls_priority_psk_sha256; static gnutls_priority_t tlshd_gnutls_priority_psk_sha384; /** * tlshd_gnutls_priority_init - Initialize GnuTLS priority caches * */ int tlshd_gnutls_priority_init(void) { const unsigned int *ciphers; gnutls_priority_t pcache; const char *errpos; char *pstring, *pstring_sha256, *pstring_sha384; int ret, i; /* Retrieve the system default priority settings */ ret = gnutls_priority_init(&pcache, NULL, &errpos); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return -EIO; } ret = gnutls_priority_cipher_list(pcache, &ciphers); gnutls_priority_deinit(pcache); if (ret < 0) { tlshd_log_gnutls_error(ret); return -EIO; } pstring = strdup("SECURE256:+SECURE128:-COMP-ALL"); if (!pstring) return -ENOMEM; /* All kernel TLS consumers require TLS v1.3 or newer. */ pstring = tlshd_string_concat(pstring, ":-VERS-ALL:+VERS-TLS1.3:%NO_TICKETS"); if (!pstring) return -ENOMEM; /* * Handshakes must negotiate only ciphers that are supported * by kTLS. The list below contains the ciphers that are * common to both kTLS and GnuTLS (Linux v6.2, GnuTLS 3.8.0). * * The resulting list is ordered by local system priority. */ pstring = tlshd_string_concat(pstring, ":-CIPHER-ALL"); if (!pstring) return -ENOMEM; pstring_sha256 = strdup(pstring); if (!pstring_sha256) { free(pstring); return -ENOMEM; } pstring_sha384 = strdup(pstring); if (!pstring_sha384) { free(pstring_sha256); free(pstring); return -ENOMEM; } for (i = 0; i < ret; ++i) { bool skip_sha256 = false; bool skip_sha384 = false; pstring = tlshd_cipher_string_emit(pstring, ciphers[i]); if (!pstring) { free(pstring_sha256); free(pstring_sha384); return -ENOMEM; } if (ciphers[i] == GNUTLS_CIPHER_AES_256_GCM) skip_sha256 = true; if (ciphers[i] == GNUTLS_CIPHER_AES_128_GCM) skip_sha384 = true; if (ciphers[i] == GNUTLS_CIPHER_AES_128_CCM) skip_sha384 = true; if (ciphers[i] == GNUTLS_CIPHER_CHACHA20_POLY1305) skip_sha256 = true; if (!skip_sha256) { pstring_sha256 = tlshd_cipher_string_emit(pstring_sha256, ciphers[i]); if (!pstring_sha256) { free(pstring_sha384); free(pstring); return -ENOMEM; } } if (!skip_sha384) { pstring_sha384 = tlshd_cipher_string_emit(pstring_sha384, ciphers[i]); if (!pstring_sha384) { free(pstring_sha256); free(pstring); return -ENOMEM; } } } tlshd_log_debug("x.509 priority string: %s\n", pstring); ret = gnutls_priority_init(&tlshd_gnutls_priority_x509, pstring, &errpos); if (ret != GNUTLS_E_SUCCESS) { free(pstring); tlshd_log_gnutls_error(ret); return -EIO; } pstring = tlshd_string_concat(pstring, ":+PSK:+DHE-PSK:+ECDHE-PSK"); if (!pstring) { free(pstring_sha256); free(pstring_sha384); gnutls_priority_deinit(tlshd_gnutls_priority_x509); return -ENOMEM; } tlshd_log_debug("PSK priority string: %s\n", pstring); ret = gnutls_priority_init(&tlshd_gnutls_priority_psk, pstring, &errpos); if (ret != GNUTLS_E_SUCCESS) { free(pstring_sha256); free(pstring_sha384); free(pstring); gnutls_priority_deinit(tlshd_gnutls_priority_x509); tlshd_log_gnutls_error(ret); return -EIO; } free(pstring); pstring = tlshd_string_concat(pstring_sha256, ":+DHE-PSK:+ECDHE-PSK"); if (!pstring) { free(pstring_sha384); gnutls_priority_deinit(tlshd_gnutls_priority_psk); gnutls_priority_deinit(tlshd_gnutls_priority_x509); return -ENOMEM; } tlshd_log_debug("PSK SHA256 priority string: %s\n", pstring); ret = gnutls_priority_init(&tlshd_gnutls_priority_psk_sha256, pstring, &errpos); if (ret != GNUTLS_E_SUCCESS) { free(pstring); free(pstring_sha384); gnutls_priority_deinit(tlshd_gnutls_priority_psk); gnutls_priority_deinit(tlshd_gnutls_priority_x509); tlshd_log_gnutls_error(ret); return -EIO; } free(pstring); pstring = tlshd_string_concat(pstring_sha384, ":+DHE-PSK:+ECDHE-PSK"); if (!pstring) { gnutls_priority_deinit(tlshd_gnutls_priority_psk_sha256); gnutls_priority_deinit(tlshd_gnutls_priority_psk); gnutls_priority_deinit(tlshd_gnutls_priority_x509); tlshd_log_gnutls_error(ret); return -EIO; } tlshd_log_debug("PSK SHA384 priority string: %s\n", pstring); ret = gnutls_priority_init(&tlshd_gnutls_priority_psk_sha384, pstring, &errpos); if (ret != GNUTLS_E_SUCCESS) { free(pstring); gnutls_priority_deinit(tlshd_gnutls_priority_psk_sha256); gnutls_priority_deinit(tlshd_gnutls_priority_psk); gnutls_priority_deinit(tlshd_gnutls_priority_x509); tlshd_log_gnutls_error(ret); return -EIO; } free(pstring); return 0; } /** * tlshd_gnutls_priority_set - Initialize priorities per-session * @session: session to initialize * @parms: handshake parameters * * Returns GNUTLS_E_SUCCESS on success, otherwise an error code. */ int tlshd_gnutls_priority_set(gnutls_session_t session, struct tlshd_handshake_parms *parms, int psk_len) { gnutls_priority_t priority = tlshd_gnutls_priority_x509; if (parms->auth_mode == HANDSHAKE_AUTH_PSK) { if (psk_len == 32) priority = tlshd_gnutls_priority_psk_sha256; else if (psk_len == 48) priority = tlshd_gnutls_priority_psk_sha384; else priority = tlshd_gnutls_priority_psk; } return gnutls_priority_set(session, priority); } /** * tlshd_gnutls_priority_deinit - Free GnuTLS priority caches * */ void tlshd_gnutls_priority_deinit(void) { gnutls_priority_deinit(tlshd_gnutls_priority_x509); gnutls_priority_deinit(tlshd_gnutls_priority_psk); gnutls_priority_deinit(tlshd_gnutls_priority_psk_sha256); gnutls_priority_deinit(tlshd_gnutls_priority_psk_sha384); } 0707010000001C000081A400000000000000000000000165FC3A6A00001A55000000000000000000000000000000000000002C00000000ktls-utils-0.10+12.gc3923f7/src/tlshd/log.c/* * Record audit and debugging information in the system log. * * Copyright (c) 2022 Oracle and/or its affiliates. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include <stdbool.h> #include <unistd.h> #include <string.h> #include <syslog.h> #include <stdarg.h> #include <errno.h> #include <sys/socket.h> #include <netdb.h> #include <keyutils.h> #include <gnutls/gnutls.h> #include <gnutls/abstract.h> #include <netlink/errno.h> #include <glib.h> #include "tlshd.h" int tlshd_debug; int tlshd_tls_debug; int tlshd_stderr; /** * tlshd_log_success - Emit "handshake successful" notification * @hostname: peer's DNS name * @sap: peer's IP address * @salen: length of IP address * */ void tlshd_log_success(const char *hostname, const struct sockaddr *sap, socklen_t salen) { char buf[NI_MAXHOST]; getnameinfo(sap, salen, buf, sizeof(buf), NULL, 0, NI_NUMERICHOST); syslog(LOG_INFO, "Handshake with %s (%s) was successful\n", hostname, buf); } /** * tlshd_log_failure - Emit "handshake failed" notification * @hostname: peer's DNS name * @sap: peer's IP address * @salen: length of IP address * */ void tlshd_log_failure(const char *hostname, const struct sockaddr *sap, socklen_t salen) { if (salen) { char buf[NI_MAXHOST]; getnameinfo(sap, salen, buf, sizeof(buf), NULL, 0, NI_NUMERICHOST); syslog(LOG_ERR, "Handshake with '%s' (%s) failed\n", hostname, buf); } else syslog(LOG_ERR, "Handshake request failed\n"); } /** * tlshd_log_debug - Emit a debugging notification * @fmt - printf-style format string * */ void tlshd_log_debug(const char *fmt, ...) { va_list args; if (!tlshd_debug) return; va_start(args, fmt); vsyslog(LOG_DEBUG, fmt, args); va_end(args); } /** * tlshd_log_error - Emit a generic error notification * @fmt - printf-style format string * */ void tlshd_log_error(const char *fmt, ...) { va_list args; va_start(args, fmt); vsyslog(LOG_ERR, fmt, args); va_end(args); } /** * tlshd_log_notice - Emit a generic warning * @fmt - printf-style format string * */ void tlshd_log_notice(const char *fmt, ...) { va_list args; va_start(args, fmt); vsyslog(LOG_NOTICE, fmt, args); va_end(args); } /** * tlshd_log_perror - Emit "system call failed" notification * @sap: remote address to log * */ void tlshd_log_perror(const char *prefix) { syslog(LOG_NOTICE, "%s: %s\n", prefix, strerror(errno)); } /** * tlshd_log_gai_error - Emit "getaddr/nameinfo failed" notification * @error: error code returned by getaddrinfo(3) or getnameinfo(3) * */ void tlshd_log_gai_error(int error) { syslog(LOG_NOTICE, "%s\n", gai_strerror(error)); } struct tlshd_cert_status_bit { unsigned int bit; char *name; }; static const struct tlshd_cert_status_bit tlshd_cert_status_names[] = { /* { GNUTLS_CERT_INVALID, "invalid" }, */ { GNUTLS_CERT_REVOKED, "revoked" }, { GNUTLS_CERT_SIGNER_NOT_FOUND, "signer not found" }, { GNUTLS_CERT_SIGNER_NOT_CA, "signer not CA" }, { GNUTLS_CERT_INSECURE_ALGORITHM, "uses insecure algorithm" }, { GNUTLS_CERT_NOT_ACTIVATED, "not activated" }, { GNUTLS_CERT_EXPIRED, "expired" }, { GNUTLS_CERT_SIGNATURE_FAILURE, "signature failure" }, { GNUTLS_CERT_REVOCATION_DATA_SUPERSEDED, "revocation data superseded" }, { GNUTLS_CERT_UNEXPECTED_OWNER, "owner unexpected" }, { GNUTLS_CERT_REVOCATION_DATA_ISSUED_IN_FUTURE, "revocation data issued in the future" }, { GNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE, "signer constraints failure" }, { GNUTLS_CERT_MISMATCH, "mismatch" }, { GNUTLS_CERT_PURPOSE_MISMATCH, "purpose mismatch" }, { GNUTLS_CERT_MISSING_OCSP_STATUS, "has missing OCSP status" }, { GNUTLS_CERT_INVALID_OCSP_STATUS, "has invalid OCSP status" }, { GNUTLS_CERT_UNKNOWN_CRIT_EXTENSIONS, "has unknown crit extensions" }, { 0, NULL } }; /** * tlshd_log_cert_verification_error - Report a failed certificate verification * @session: Session with a failed handshake * */ void tlshd_log_cert_verification_error(gnutls_session_t session) { unsigned int status; int i; status = gnutls_session_get_verify_cert_status(session); for (i = 0; tlshd_cert_status_names[i].name; i++) if (status & tlshd_cert_status_names[i].bit) syslog(LOG_ERR, "Certificate %s.\n", tlshd_cert_status_names[i].name); } /** * tlshd_log_gnutls_error - Emit "library call failed" notification * @error: GnuTLS error code to log * */ void tlshd_log_gnutls_error(int error) { syslog(LOG_NOTICE, "gnutls: %s (%d)\n", gnutls_strerror(error), error); } /** * tlshd_gnutls_log_func - Library callback function to log a message * @level: log level * @msg: message to log * */ void tlshd_gnutls_log_func(int level, const char *msg) { syslog(LOG_DEBUG, "gnutls(%d): %s", level, msg); } /** * tlshd_gnutls_audit_func - Library callback function to log an audit message * @session: controlling GnuTLS session * @msg: message to log * */ void tlshd_gnutls_audit_func(__attribute__ ((unused)) gnutls_session_t session, const char *msg) { syslog(LOG_INFO, "audit: %s", msg); } /** * tlshd_log_gerror - Emit glib2 "library call failed" notification * @msg: message to log * @error: error information * */ void tlshd_log_gerror(const char *msg, GError *error) { syslog(LOG_ERR, "%s: %s", msg, error->message); } /** * tlshd_log_nl_error - Log a netlink error * @msg: message to log * @err: error number * */ void tlshd_log_nl_error(const char *msg, int err) { syslog(LOG_ERR, "%s: %s", msg, nl_geterror(err)); } /** * tlshd_log_init - Initialize audit logging * @progname: NUL-terminated string containing program name * */ void tlshd_log_init(const char *progname) { int option; option = LOG_NDELAY | LOG_PID; if (tlshd_stderr) option |= LOG_PERROR; openlog(progname, option, LOG_AUTH); syslog(LOG_NOTICE, "Built from " PACKAGE_STRING " on " __DATE__ " " __TIME__); } /** * tlshd_log_shutdown - Log a tlshd shutdown notice * */ void tlshd_log_shutdown(void) { syslog(LOG_NOTICE, "Shutting down."); } /** * tlshd_log_close - Release audit logging resources * */ void tlshd_log_close(void) { closelog(); } 0707010000001D000081A400000000000000000000000165FC3A6A00000B3B000000000000000000000000000000000000002D00000000ktls-utils-0.10+12.gc3923f7/src/tlshd/main.c/* * Handle a request for a TLS handshake on behalf of an * in-kernel TLS consumer. * * Copyright (c) 2022 - 2023 Oracle and/or its affiliates. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include <sys/types.h> #include <sys/socket.h> #include <stdbool.h> #include <unistd.h> #include <stdlib.h> #include <stdio.h> #include <errno.h> #include <poll.h> #include <string.h> #include <getopt.h> #include <signal.h> #include <libgen.h> #include <keyutils.h> #include <netlink/netlink.h> #include <netlink/socket.h> #include <netlink/msg.h> #include <gnutls/gnutls.h> #include <gnutls/abstract.h> #include <glib.h> #include "tlshd.h" static const char *optstring = "c:hsv"; static const struct option longopts[] = { { "config", required_argument, NULL, 'c' }, { "help", no_argument, NULL, 'h' }, { "stderr", no_argument, NULL, 's' }, { "version", no_argument, NULL, 'v' }, { NULL, 0, NULL, 0 } }; void usage(char *progname) { fprintf(stderr, "usage: %s [-chsv]\n", progname); } int main(int argc, char **argv) { static gchar config_file[PATH_MAX + 1] = "/etc/tlshd.conf"; char *progname; int c; size_t len; tlshd_tls_debug = 0; progname = basename(argv[0]); while ((c = getopt_long(argc, argv, optstring, longopts, NULL)) != -1) { switch (c) { case 'c': len = sizeof(config_file) - 1; if (strlen(optarg) >= len) { fprintf(stderr, "Invalid config file\n"); return EXIT_FAILURE; } strncpy(config_file, optarg, len); config_file[len] = '\0'; break; case 's': tlshd_stderr = 1; break; case 'v': fprintf(stderr, "%s, built from " PACKAGE_STRING " on " __DATE__ " " __TIME__ "\n", progname); return EXIT_SUCCESS; case 'h': usage(progname); return EXIT_SUCCESS; default: usage(progname); return EXIT_FAILURE; } } tlshd_log_init(progname); if (!tlshd_config_init(config_file)) { tlshd_log_shutdown(); tlshd_log_close(); return EXIT_FAILURE; } if (tlshd_gnutls_priority_init()) { tlshd_config_shutdown(); tlshd_log_shutdown(); tlshd_log_close(); return EXIT_FAILURE; } tlshd_genl_dispatch(); tlshd_gnutls_priority_deinit(); tlshd_config_shutdown(); tlshd_log_shutdown(); tlshd_log_close(); return EXIT_SUCCESS; } 0707010000001E000081A400000000000000000000000165FC3A6A00002C2E000000000000000000000000000000000000003000000000ktls-utils-0.10+12.gc3923f7/src/tlshd/netlink.c/* * Netlink operations for tlshd * * Copyright (c) 2023 Oracle and/or its affiliates. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include <sys/types.h> #include <sys/stat.h> #include <sys/socket.h> #include <stdbool.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #include <stdio.h> #include <errno.h> #include <poll.h> #include <fcntl.h> #include <keyutils.h> #include <gnutls/gnutls.h> #include <gnutls/abstract.h> #include <gnutls/x509.h> #include <linux/tls.h> #include <netlink/netlink.h> #include <netlink/msg.h> #include <netlink/genl/genl.h> #include <netlink/genl/ctrl.h> #include <netlink/version.h> #include <glib.h> #include "tlshd.h" #include "netlink.h" unsigned int tlshd_delay_done; static int tlshd_genl_sock_open(struct nl_sock **sock) { struct nl_sock *nls; int err, ret; ret = ENOMEM; nls = nl_socket_alloc(); if (!nls) { tlshd_log_error("Failed to allocate netlink socket."); goto out; } ret = ENOLINK; err = genl_connect(nls); if (err != NLE_SUCCESS) { tlshd_log_nl_error("genl_connect", err); nl_socket_free(nls); goto out; } *sock = nls; ret = 0; out: return ret; } static void tlshd_genl_sock_close(struct nl_sock *nls) { if (!nls) return; nl_close(nls); nl_socket_free(nls); } #if LIBNL_VER_NUM >= LIBNL_VER(3,5) static const struct nla_policy #else static struct nla_policy #endif tlshd_accept_nl_policy[HANDSHAKE_A_ACCEPT_MAX + 1] = { [HANDSHAKE_A_ACCEPT_SOCKFD] = { .type = NLA_U32, }, [HANDSHAKE_A_ACCEPT_HANDLER_CLASS] = { .type = NLA_U32, }, [HANDSHAKE_A_ACCEPT_MESSAGE_TYPE] = { .type = NLA_U32, }, [HANDSHAKE_A_ACCEPT_TIMEOUT] = { .type = NLA_U32, }, [HANDSHAKE_A_ACCEPT_AUTH_MODE] = { .type = NLA_U32, }, [HANDSHAKE_A_ACCEPT_PEER_IDENTITY] = { .type = NLA_U32, }, [HANDSHAKE_A_ACCEPT_CERTIFICATE] = { .type = NLA_NESTED, }, [HANDSHAKE_A_ACCEPT_PEERNAME] = { .type = NLA_STRING, }, }; static int tlshd_genl_event_handler(struct nl_msg *msg, __attribute__ ((unused)) void *arg) { struct nlattr *tb[HANDSHAKE_A_ACCEPT_MAX + 1]; int err; err = genlmsg_parse(nlmsg_hdr(msg), 0, tb, HANDSHAKE_A_ACCEPT_MAX, tlshd_accept_nl_policy); if (err < 0) { tlshd_log_nl_error("genlmsg_parse", err); return NL_SKIP; } if (!tb[HANDSHAKE_A_ACCEPT_HANDLER_CLASS]) return NL_SKIP; if (nla_get_u32(tb[HANDSHAKE_A_ACCEPT_HANDLER_CLASS]) != HANDSHAKE_HANDLER_CLASS_TLSHD) return NL_SKIP; if (!fork()) { /* child */ tlshd_service_socket(); exit(EXIT_SUCCESS); } return NL_SKIP; } /** * tlshd_genl_dispatch - handle notification events * */ void tlshd_genl_dispatch(void) { struct nl_sock *nls; int err, mcgrp; err = tlshd_genl_sock_open(&nls); if (err) return; nl_socket_modify_cb(nls, NL_CB_VALID, NL_CB_CUSTOM, tlshd_genl_event_handler, NULL); /* Let the kernel know we are running */ mcgrp = genl_ctrl_resolve_grp(nls, HANDSHAKE_FAMILY_NAME, HANDSHAKE_MCGRP_TLSHD); if (mcgrp < 0) { tlshd_log_error("Kernel handshake service is not available"); goto out_close; } err = nl_socket_add_membership(nls, mcgrp); if (err != NLE_SUCCESS) { tlshd_log_nl_error("nl_socket_add_membership", err); goto out_close; } if (signal(SIGCHLD, SIG_IGN) == SIG_ERR) { tlshd_log_perror("signal"); goto out_close; } nl_socket_disable_seq_check(nls); while (true) { err = nl_recvmsgs_default(nls); if (err < 0) { tlshd_log_nl_error("nl_recvmsgs", err); break; } }; out_close: tlshd_genl_sock_close(nls); } static void tlshd_parse_peer_identity(struct tlshd_handshake_parms *parms, struct nlattr *head) { if (!head) { tlshd_log_debug("No peer identities found\n"); return; } parms->num_peerids = 1; parms->peerids = calloc(parms->num_peerids, sizeof(key_serial_t)); if (!parms->peerids) { parms->num_peerids = 0; return; } parms->peerids[0] = nla_get_s32(head); } #if LIBNL_VER_NUM >= LIBNL_VER(3,5) static const struct nla_policy #else static struct nla_policy #endif tlshd_x509_nl_policy[HANDSHAKE_A_X509_MAX + 1] = { [HANDSHAKE_A_X509_CERT] = { .type = NLA_U32, }, [HANDSHAKE_A_X509_PRIVKEY] = { .type = NLA_U32, }, }; static void tlshd_parse_certificate(struct tlshd_handshake_parms *parms, struct nlattr *head) { struct nlattr *tb[HANDSHAKE_A_X509_MAX + 1]; int err; if (!head) { tlshd_log_debug("No certificates found\n"); return; } err = nla_parse_nested(tb, HANDSHAKE_A_X509_MAX, head, tlshd_x509_nl_policy); if (err < 0) return; if (tb[HANDSHAKE_A_X509_CERT]) parms->x509_cert = nla_get_s32(tb[HANDSHAKE_A_X509_CERT]); if (tb[HANDSHAKE_A_X509_PRIVKEY]) parms->x509_privkey = nla_get_s32(tb[HANDSHAKE_A_X509_PRIVKEY]); } static char tlshd_peername[NI_MAXHOST] = "unknown"; static struct sockaddr_storage tlshd_peeraddr = { 0 }; static int tlshd_genl_valid_handler(struct nl_msg *msg, void *arg) { struct nlattr *tb[HANDSHAKE_A_ACCEPT_MAX + 1]; struct tlshd_handshake_parms *parms = arg; char *peername = NULL; int err; tlshd_log_debug("Parsing a valid netlink message\n"); err = genlmsg_parse(nlmsg_hdr(msg), 0, tb, HANDSHAKE_A_ACCEPT_MAX, tlshd_accept_nl_policy); if (err < 0) { tlshd_log_nl_error("genlmsg_parse", err); return NL_STOP; } if (tb[HANDSHAKE_A_ACCEPT_SOCKFD]) { parms->sockfd = nla_get_s32(tb[HANDSHAKE_A_ACCEPT_SOCKFD]); if (getpeername(parms->sockfd, parms->peeraddr, &parms->peeraddr_len) == -1) { tlshd_log_perror("getpeername"); return NL_STOP; } } if (tb[HANDSHAKE_A_ACCEPT_MESSAGE_TYPE]) parms->handshake_type = nla_get_u32(tb[HANDSHAKE_A_ACCEPT_MESSAGE_TYPE]); if (tb[HANDSHAKE_A_ACCEPT_PEERNAME]) peername = nla_get_string(tb[HANDSHAKE_A_ACCEPT_PEERNAME]); if (tb[HANDSHAKE_A_ACCEPT_TIMEOUT]) parms->timeout_ms = nla_get_u32(tb[HANDSHAKE_A_ACCEPT_TIMEOUT]); if (tb[HANDSHAKE_A_ACCEPT_AUTH_MODE]) parms->auth_mode = nla_get_u32(tb[HANDSHAKE_A_ACCEPT_AUTH_MODE]); tlshd_parse_peer_identity(parms, tb[HANDSHAKE_A_ACCEPT_PEER_IDENTITY]); tlshd_parse_certificate(parms, tb[HANDSHAKE_A_ACCEPT_CERTIFICATE]); if (peername) strcpy(tlshd_peername, peername); else { err = getnameinfo(parms->peeraddr, parms->peeraddr_len, tlshd_peername, sizeof(tlshd_peername), NULL, 0, NI_NAMEREQD); if (err) { tlshd_log_gai_error(err); return NL_STOP; } } return NL_SKIP; } static const struct tlshd_handshake_parms tlshd_default_handshake_parms = { .peername = tlshd_peername, .peeraddr = (struct sockaddr *)&tlshd_peeraddr, .peeraddr_len = sizeof(tlshd_peeraddr), .sockfd = -1, .handshake_type = HANDSHAKE_MSG_TYPE_UNSPEC, .timeout_ms = GNUTLS_DEFAULT_HANDSHAKE_TIMEOUT, .auth_mode = HANDSHAKE_AUTH_UNSPEC, .x509_cert = TLS_NO_CERT, .x509_privkey = TLS_NO_PRIVKEY, .peerids = NULL, .num_peerids = 0, .msg_status = 0, .session_status = EIO, .num_remote_peerids = 0, }; /** * tlshd_genl_get_handshake_parms - Retrieve handshake parameters * @parms: buffer to fill in with parameters * * Returns 0 if handshake parameters were retrieved successfully. * * Otherwise a positive errno is returned, and the content of * @parms is indeterminant. */ int tlshd_genl_get_handshake_parms(struct tlshd_handshake_parms *parms) { int family_id, err, ret; struct nlmsghdr *hdr; struct nl_sock *nls; struct nl_msg *msg; tlshd_log_debug("Querying the handshake service\n"); *parms = tlshd_default_handshake_parms; ret = tlshd_genl_sock_open(&nls); if (ret) return ret; ret = ESRCH; family_id = genl_ctrl_resolve(nls, HANDSHAKE_FAMILY_NAME); if (family_id < 0) { tlshd_log_error("Failed to resolve netlink service."); goto out_close; } nl_socket_modify_cb(nls, NL_CB_VALID, NL_CB_CUSTOM, tlshd_genl_valid_handler, parms); msg = nlmsg_alloc(); if (!msg) { tlshd_log_error("Failed to allocate message buffer."); goto out_close; } ret = EIO; hdr = genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, family_id, 0, 0, HANDSHAKE_CMD_ACCEPT, 0); if (!hdr) { tlshd_log_error("Failed to set up message header."); goto out_msgfree; } err = nla_put_u32(msg, HANDSHAKE_A_ACCEPT_HANDLER_CLASS, HANDSHAKE_HANDLER_CLASS_TLSHD); if (err < 0) { tlshd_log_nl_error("nla_put handler class", err); goto out_msgfree; } nl_socket_disable_auto_ack(nls); err = nl_send_auto(nls, msg); if (err < 0) { tlshd_log_nl_error("nl_send_auto", err); goto out_msgfree; } ret = EINVAL; err = nl_recvmsgs_default(nls); if (err < 0) { tlshd_log_nl_error("nl_recvmsgs", err); goto out_msgfree; } ret = parms->msg_status; out_msgfree: nlmsg_free(msg); out_close: tlshd_genl_sock_close(nls); return ret; } static int tlshd_genl_put_remote_peerids(struct nl_msg *msg, struct tlshd_handshake_parms *parms) { unsigned int i; int err; for (i = 0; i < parms->num_remote_peerids; i++) { err = nla_put_s32(msg, HANDSHAKE_A_DONE_REMOTE_AUTH, parms->remote_peerid[i]); if (err < 0) { tlshd_log_nl_error("nla_put peer id", err); return -1; } } return 0; } /** * tlshd_genl_done - Indicate anon handshake has completed successfully * @parms: buffer filled in with parameters * */ void tlshd_genl_done(struct tlshd_handshake_parms *parms) { struct nlmsghdr *hdr; struct nl_sock *nls; struct nl_msg *msg; int family_id, err; if (parms->sockfd == -1) return; err = tlshd_genl_sock_open(&nls); if (err) return; family_id = genl_ctrl_resolve(nls, HANDSHAKE_FAMILY_NAME); if (family_id < 0) { tlshd_log_nl_error("genl_ctrl_resolve", err); goto out_close; } msg = nlmsg_alloc(); if (!msg) { tlshd_log_error("Failed to allocate message buffer."); goto out_close; } hdr = genlmsg_put(msg, NL_AUTO_PORT, NL_AUTO_SEQ, family_id, 0, 0, HANDSHAKE_CMD_DONE, 0); if (!hdr) { tlshd_log_error("Failed to set up message header."); goto out_free; } err = nla_put_u32(msg, HANDSHAKE_A_DONE_STATUS, parms->session_status); if (err) { tlshd_log_nl_error("nla_put sess_status", err); goto out_free; } err = nla_put_s32(msg, HANDSHAKE_A_DONE_SOCKFD, parms->sockfd); if (err < 0) { tlshd_log_nl_error("nla_put sockfd", err); goto out_free; } if (parms->session_status) goto sendit; err = tlshd_genl_put_remote_peerids(msg, parms); if (err < 0) goto out_free; sendit: if (tlshd_delay_done) { /* Undocumented tlshd.conf parameter: * delay DONE downcall by N seconds */ tlshd_log_debug("delaying %d second(s)", tlshd_delay_done); sleep(tlshd_delay_done); } nl_socket_disable_auto_ack(nls); err = nl_send_auto(nls, msg); if (err < 0) { tlshd_log_nl_error("nl_send_auto", err); goto out_free; } out_free: nlmsg_free(msg); out_close: tlshd_genl_sock_close(nls); } 0707010000001F000081A400000000000000000000000165FC3A6A0000067D000000000000000000000000000000000000003000000000ktls-utils-0.10+12.gc3923f7/src/tlshd/netlink.h/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */ /* Do not edit directly, auto-generated from: */ /* Documentation/netlink/specs/handshake.yaml */ /* YNL-GEN uapi header */ #ifndef _UAPI_LINUX_HANDSHAKE_H #define _UAPI_LINUX_HANDSHAKE_H #define HANDSHAKE_FAMILY_NAME "handshake" #define HANDSHAKE_FAMILY_VERSION 1 enum handshake_handler_class { HANDSHAKE_HANDLER_CLASS_NONE, HANDSHAKE_HANDLER_CLASS_TLSHD, HANDSHAKE_HANDLER_CLASS_MAX, }; enum handshake_msg_type { HANDSHAKE_MSG_TYPE_UNSPEC, HANDSHAKE_MSG_TYPE_CLIENTHELLO, HANDSHAKE_MSG_TYPE_SERVERHELLO, }; enum handshake_auth { HANDSHAKE_AUTH_UNSPEC, HANDSHAKE_AUTH_UNAUTH, HANDSHAKE_AUTH_PSK, HANDSHAKE_AUTH_X509, }; enum { HANDSHAKE_A_X509_CERT = 1, HANDSHAKE_A_X509_PRIVKEY, __HANDSHAKE_A_X509_MAX, HANDSHAKE_A_X509_MAX = (__HANDSHAKE_A_X509_MAX - 1) }; enum { HANDSHAKE_A_ACCEPT_SOCKFD = 1, HANDSHAKE_A_ACCEPT_HANDLER_CLASS, HANDSHAKE_A_ACCEPT_MESSAGE_TYPE, HANDSHAKE_A_ACCEPT_TIMEOUT, HANDSHAKE_A_ACCEPT_AUTH_MODE, HANDSHAKE_A_ACCEPT_PEER_IDENTITY, HANDSHAKE_A_ACCEPT_CERTIFICATE, HANDSHAKE_A_ACCEPT_PEERNAME, __HANDSHAKE_A_ACCEPT_MAX, HANDSHAKE_A_ACCEPT_MAX = (__HANDSHAKE_A_ACCEPT_MAX - 1) }; enum { HANDSHAKE_A_DONE_STATUS = 1, HANDSHAKE_A_DONE_SOCKFD, HANDSHAKE_A_DONE_REMOTE_AUTH, __HANDSHAKE_A_DONE_MAX, HANDSHAKE_A_DONE_MAX = (__HANDSHAKE_A_DONE_MAX - 1) }; enum { HANDSHAKE_CMD_READY = 1, HANDSHAKE_CMD_ACCEPT, HANDSHAKE_CMD_DONE, __HANDSHAKE_CMD_MAX, HANDSHAKE_CMD_MAX = (__HANDSHAKE_CMD_MAX - 1) }; #define HANDSHAKE_MCGRP_NONE "none" #define HANDSHAKE_MCGRP_TLSHD "tlshd" #endif /* _UAPI_LINUX_HANDSHAKE_H */ 07070100000020000081A400000000000000000000000165FC3A6A000029FF000000000000000000000000000000000000002F00000000ktls-utils-0.10+12.gc3923f7/src/tlshd/server.c/* * Perform a TLSv1.3 server-side handshake. * * Copyright (c) 2023 Oracle and/or its affiliates. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include "config.h" #include <sys/types.h> #include <sys/socket.h> #include <stdbool.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #include <stdio.h> #include <errno.h> #include <keyutils.h> #include <gnutls/gnutls.h> #include <gnutls/abstract.h> #include <gnutls/x509.h> #include <linux/tls.h> #include <glib.h> #include "tlshd.h" #include "netlink.h" static gnutls_privkey_t tlshd_server_privkey; static unsigned int tlshd_server_certs_len = TLSHD_MAX_CERTS; static gnutls_pcert_st tlshd_server_certs[TLSHD_MAX_CERTS]; /* * XXX: After this point, tlshd_server_certs should be deinited on error. */ static bool tlshd_x509_server_get_certs(struct tlshd_handshake_parms *parms) { if (parms->x509_cert != TLS_NO_CERT) return tlshd_keyring_get_certs(parms->x509_cert, tlshd_server_certs, &tlshd_server_certs_len); return tlshd_config_get_server_certs(tlshd_server_certs, &tlshd_server_certs_len); } /* * XXX: After this point, tlshd_server_privkey should be deinited on error. */ static bool tlshd_x509_server_get_privkey(struct tlshd_handshake_parms *parms) { if (parms->x509_privkey != TLS_NO_PRIVKEY) return tlshd_keyring_get_privkey(parms->x509_privkey, &tlshd_server_privkey); return tlshd_config_get_server_privkey(&tlshd_server_privkey); } static void tlshd_x509_log_issuers(const gnutls_datum_t *req_ca_rdn, int nreqs) { char issuer_dn[256]; size_t len; int i, ret; if (nreqs < 1) return; tlshd_log_debug("Server's trusted authorities:"); for (i = 0; i < nreqs; i++) { len = sizeof(issuer_dn); ret = gnutls_x509_rdn_get(&req_ca_rdn[i], issuer_dn, &len); if (ret >= 0) tlshd_log_debug(" [%d]: %s", i, issuer_dn); } } /** * tlshd_x509_retrieve_key_cb - Initialize client's x.509 identity * * Callback function is of type gnutls_certificate_retrieve_function2 * * Initial implementation based on the cert_callback() function in * gnutls/doc/examples/ex-cert-select.c. * * Sketched-in and untested. * * Return values: * %0: Success; output parameters are set accordingly * %-1: Failure */ static int tlshd_x509_retrieve_key_cb(gnutls_session_t session, const gnutls_datum_t *req_ca_rdn, int nreqs, __attribute__ ((unused)) const gnutls_pk_algorithm_t *pk_algos, __attribute__ ((unused)) int pk_algos_length, gnutls_pcert_st **pcert, unsigned int *pcert_length, gnutls_privkey_t *privkey) { gnutls_certificate_type_t type; tlshd_x509_log_issuers(req_ca_rdn, nreqs); type = gnutls_certificate_type_get(session); if (type != GNUTLS_CRT_X509) return -1; *pcert_length = tlshd_server_certs_len; *pcert = tlshd_server_certs; *privkey = tlshd_server_privkey; return 0; } /** * tlshd_server_x509_verify_function - Verify remote's x.509 certificate * @session: session in the midst of a handshake * * A return value of %GNUTLS_E_SUCCESS indicates that the TLS session * has been allowed to continue. tlshd either sets the peerid array if * the presented certificate has been successfully verified, or the * peerid array is left empty if no peer information was available to * perform verification. The kernel consumer can apply a security policy * based on this information. * * A return value of %GNUTLS_E_CERTIFICATE_ERROR means that certificate * verification failed. The server sends an ALERT to the client. */ static int tlshd_server_x509_verify_function(gnutls_session_t session) { struct tlshd_handshake_parms *parms; const gnutls_datum_t *peercerts; gnutls_certificate_type_t type; unsigned int i, status; gnutls_datum_t out; int ret; parms = gnutls_session_get_ptr(session); ret = gnutls_certificate_verify_peers3(session, NULL, &status); switch (ret) { case GNUTLS_E_SUCCESS: break; case GNUTLS_E_NO_CERTIFICATE_FOUND: tlshd_log_debug("The peer offered no certificate."); return GNUTLS_E_SUCCESS; default: tlshd_log_gnutls_error(ret); goto certificate_error; } type = gnutls_certificate_type_get(session); gnutls_certificate_verification_status_print(status, type, &out, 0); tlshd_log_debug("%s", out.data); gnutls_free(out.data); if (status) goto certificate_error; /* To do: Examine extended key usage information here, if we want * to get picky. Kernel would have to tell us what to look for * via a netlink attribute. */ peercerts = gnutls_certificate_get_peers(session, &parms->num_remote_peerids); if (!peercerts || parms->num_remote_peerids == 0) { tlshd_log_debug("The peer cert list is empty."); goto certificate_error; } tlshd_log_debug("The peer offered %u certificate(s).", parms->num_remote_peerids); if (parms->num_remote_peerids > ARRAY_SIZE(parms->remote_peerid)) parms->num_remote_peerids = ARRAY_SIZE(parms->remote_peerid); for (i = 0; i < parms->num_remote_peerids; i++) { gnutls_x509_crt_t cert; gnutls_x509_crt_init(&cert); ret = gnutls_x509_crt_import(cert, &peercerts[i], GNUTLS_X509_FMT_DER); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); gnutls_x509_crt_deinit(cert); return GNUTLS_E_CERTIFICATE_ERROR; } parms->remote_peerid[i] = tlshd_keyring_create_cert(cert, parms->peername); gnutls_x509_crt_deinit(cert); } return GNUTLS_E_SUCCESS; certificate_error: gnutls_alert_send(session, GNUTLS_AL_FATAL, GNUTLS_A_ACCESS_DENIED); return GNUTLS_E_CERTIFICATE_ERROR; } static void tlshd_server_x509_handshake(struct tlshd_handshake_parms *parms) { gnutls_certificate_credentials_t xcred; gnutls_session_t session; char *cafile; int ret; ret = gnutls_certificate_allocate_credentials(&xcred); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return; } if (tlshd_config_get_server_truststore(&cafile)) { ret = gnutls_certificate_set_x509_trust_file(xcred, cafile, GNUTLS_X509_FMT_PEM); free(cafile); } else ret = gnutls_certificate_set_x509_system_trust(xcred); if (ret < 0) { tlshd_log_gnutls_error(ret); goto out_free_creds; } tlshd_log_debug("System trust: Loaded %d certificate(s).", ret); if (!tlshd_x509_server_get_certs(parms)) { goto out_free_creds; } if (!tlshd_x509_server_get_privkey(parms)) { goto out_free_creds; } gnutls_certificate_set_retrieve_function2(xcred, tlshd_x509_retrieve_key_cb); ret = gnutls_init(&session, GNUTLS_SERVER); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } gnutls_transport_set_int(session, parms->sockfd); gnutls_session_set_ptr(session, parms); ret = gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, xcred); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } gnutls_certificate_set_verify_function(xcred, tlshd_server_x509_verify_function); gnutls_certificate_server_set_request(session, GNUTLS_CERT_REQUEST); ret = tlshd_gnutls_priority_set(session, parms, 0); if (ret) { tlshd_log_gnutls_error(ret); goto out_free_creds; } tlshd_start_tls_handshake(session, parms); gnutls_deinit(session); out_free_creds: gnutls_certificate_free_credentials(xcred); } /** * tlshd_server_psk_cb - Validate remote's username * @session: session in the midst of a handshake * @username: remote's username * @key: PSK matching @username * * Searches for a key with description @username in the session * keyring, and stores the PSK data in @key if found. * * Return values: * %0: Matching key has been stored in @key * %-1: Error during lookup, @key is not updated */ static int tlshd_server_psk_cb(gnutls_session_t session, const char *username, gnutls_datum_t *key) { struct tlshd_handshake_parms *parms; key_serial_t psk; long ret; parms = gnutls_session_get_ptr(session); ret = keyctl_search(KEY_SPEC_SESSION_KEYRING, "psk", username, 0); if (ret < 0) { tlshd_log_error("failed to search key"); return -1; } psk = (key_serial_t)ret; if (!tlshd_keyring_get_psk_key(psk, key)) { tlshd_log_error("failed to load key"); return -1; } /* PSK uses the same identity for both client and server */ parms->remote_peerid[0] = psk; parms->num_remote_peerids = 1; return 0; } static void tlshd_server_psk_handshake(struct tlshd_handshake_parms *parms) { gnutls_psk_server_credentials_t psk_cred; gnutls_session_t session; int ret; ret = gnutls_psk_allocate_server_credentials(&psk_cred); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return; } gnutls_psk_set_server_credentials_function(psk_cred, tlshd_server_psk_cb); ret = gnutls_init(&session, GNUTLS_SERVER); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); goto out_free_creds; } gnutls_transport_set_int(session, parms->sockfd); gnutls_session_set_ptr(session, parms); gnutls_credentials_set(session, GNUTLS_CRD_PSK, psk_cred); ret = tlshd_gnutls_priority_set(session, parms, 0); if (ret) { tlshd_log_gnutls_error(ret); goto out_free_creds; } tlshd_start_tls_handshake(session, parms); gnutls_deinit(session); out_free_creds: gnutls_psk_free_server_credentials(psk_cred); } /** * tlshd_serverhello_handshake - send a TLSv1.3 ServerHello * @parms: handshake parameters * */ void tlshd_serverhello_handshake(struct tlshd_handshake_parms *parms) { int ret; ret = gnutls_global_init(); if (ret != GNUTLS_E_SUCCESS) { tlshd_log_gnutls_error(ret); return; } if (tlshd_tls_debug) gnutls_global_set_log_level(tlshd_tls_debug); gnutls_global_set_log_function(tlshd_gnutls_log_func); gnutls_global_set_audit_log_function(tlshd_gnutls_audit_func); #ifdef HAVE_GNUTLS_GET_SYSTEM_CONFIG_FILE tlshd_log_debug("System config file: %s", gnutls_get_system_config_file()); #endif switch (parms->auth_mode) { case HANDSHAKE_AUTH_X509: tlshd_server_x509_handshake(parms); break; case HANDSHAKE_AUTH_PSK: tlshd_server_psk_handshake(parms); break; default: tlshd_log_debug("Unrecognized auth mode (%d)", parms->auth_mode); } gnutls_global_deinit(); } 07070100000021000081A400000000000000000000000165FC3A6A0000043A000000000000000000000000000000000000003100000000ktls-utils-0.10+12.gc3923f7/src/tlshd/tlshd.conf# # Copyright (c) 2022 Oracle and/or its affiliates. # # This file is part of ktls-utils. # # ktls-utils 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; version 2. # # 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, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301, USA. # # See tlshd.conf(5) for details. # [debug] loglevel=0 tls=0 nl=0 [authenticate] #keyrings= <keyring>;<keyring>;<keyring> [authenticate.client] #x509.truststore= <pathname> #x509.certificate= <pathname> #x509.private_key= <pathname> [authenticate.server] #x509.truststore= <pathname> #x509.certificate= <pathname> #x509.private_key= <pathname> 07070100000022000081A400000000000000000000000165FC3A6A00000EDA000000000000000000000000000000000000003500000000ktls-utils-0.10+12.gc3923f7/src/tlshd/tlshd.conf.man.\" .\" Copyright (c) 2022 Oracle and/or its affiliates. .\" .\" ktls-utils 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; version 2. .\" .\" 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, write to the Free Software .\" Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA .\" 02110-1301, USA. .\" .\" tlshd.conf(5) .\" .\" Copyright (c) 2022 Oracle and/or its affiliates. .TH tlshd.conf 5 "20 Oct 2022" .SH NAME tlshd.conf \- tlshd configuration file .SH SYNOPSIS .B /etc/tlshd.conf .SH DESCRIPTION The .B tlshd program implements a user agent that services TLS handshake requests on behalf of kernel TLS consumers. Its configuration file contains information that the program reads when it starts up. The file is designed to be human readable and contains a list of keywords with values that provide various types of information. The configuration file is considered a trusted source of information. .P The .B tlshd program reads this file once when it is launched. Thus changes made in this file take effect only when the .B tlshd program is restarted. If this file does not exist, the .B tlshd program exits immediately. .SH OPTIONS The configuration file is split into sections. .P The .I [debug] section specifies debugging settings for the .B tlshd program. In this section, there are three available options: .TP .B loglevel This option specifies an integer which indicates the debug message level. Zero, the quietest setting, is the default. .TP .B tls This option specifies an integer which indicates the debug message level for TLS library calls. Zero, the quietest setting, is the default. .TP .B nl This option specifies an integer which indicates the debug message level for netlink library calls. Zero, the quietest setting, is the default. .P The .I [authenticate] section specifies default authentication material when establishing TLS sessions. In this section, there is one available option: .TP .B keyrings This option specifies a semicolon-separated list of auxiliary keyrings that contain handshake authentication tokens. .B tlshd links these keyrings into its session keyring. The configuration file may specify either a keyring's name or serial number. The default is to provide no keyring. .P And, in this section, there are two subsections: .I [client] and .IR [server] . The .B tlshd program consults the settings in the .I [client] subsection when handling the client end of a handshake, and it consults the settings in the .I [server] subsection when handling the server end of a handshake. .P In each of these two subsections, there are three available options: .TP .B x509.truststore This option specifies the pathname of a file containing a PEM-encoded trust store that is to be used to verify a certificate during a handshake. If this option is not specified, .B tlshd uses the system's trust store. .TP .B x509.certificate This option specifies the pathname of a file containing a PEM-encoded x.509 certificate that is to be presented during a handshake request when no other certificate is available. .TP .B x509.private_key This option specifies the pathname of a file containing a PEM-encoded private key associated with the above certificate. .SH NOTES This software is a prototype. It's purpose is for demonstration and as a proof-of-concept. USE THIS SOFTWARE AT YOUR OWN RISK. .SH SEE ALSO .BR tlshd (8) .SH AUTHOR Chuck Lever 07070100000023000081A400000000000000000000000165FC3A6A0000117F000000000000000000000000000000000000002E00000000ktls-utils-0.10+12.gc3923f7/src/tlshd/tlshd.h/* * Generic definitions and forward declarations for tlshd. * * ktls-utils 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; version 2. * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include <linux/netlink.h> #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) extern int tlshd_debug; extern int tlshd_tls_debug; extern unsigned int tlshd_delay_done; extern int tlshd_stderr; struct nl_sock; struct tlshd_handshake_parms { char *peername; struct sockaddr *peeraddr; socklen_t peeraddr_len; int sockfd; uint32_t handshake_type; unsigned int timeout_ms; uint32_t auth_mode; key_serial_t x509_cert; key_serial_t x509_privkey; key_serial_t *peerids; unsigned int num_peerids; int msg_status; unsigned int session_status; unsigned int num_remote_peerids; key_serial_t remote_peerid[10]; }; /* client.c */ extern void tlshd_clienthello_handshake(struct tlshd_handshake_parms *parms); /* config.c */ bool tlshd_config_init(const gchar *pathname); void tlshd_config_shutdown(void); bool tlshd_config_get_client_truststore(char **bundle); bool tlshd_config_get_client_certs(gnutls_pcert_st *certs, unsigned int *certs_len); bool tlshd_config_get_client_privkey(gnutls_privkey_t *privkey); bool tlshd_config_get_server_truststore(char **bundle); bool tlshd_config_get_server_certs(gnutls_pcert_st *certs, unsigned int *certs_len); bool tlshd_config_get_server_privkey(gnutls_privkey_t *privkey); /* handshake.c */ extern void tlshd_start_tls_handshake(gnutls_session_t session, struct tlshd_handshake_parms *parms); extern void tlshd_service_socket(void); /* keyring.c */ extern bool tlshd_keyring_get_psk_username(key_serial_t serial, char **username); extern bool tlshd_keyring_get_psk_key(key_serial_t serial, gnutls_datum_t *key); extern bool tlshd_keyring_get_privkey(key_serial_t serial, gnutls_privkey_t *privkey); extern bool tlshd_keyring_get_certs(key_serial_t serial, gnutls_pcert_st *certs, unsigned int *certs_len); extern key_serial_t tlshd_keyring_create_cert(gnutls_x509_crt_t cert, const char *peername); extern int tlshd_keyring_link_session(const char *keyring); /* ktls.c */ extern unsigned int tlshd_initialize_ktls(gnutls_session_t session); extern int tlshd_gnutls_priority_init(void); extern int tlshd_gnutls_priority_set(gnutls_session_t session, struct tlshd_handshake_parms *parms, int psk_len); extern void tlshd_gnutls_priority_deinit(void); /* log.c */ extern void tlshd_log_init(const char *progname); extern void tlshd_log_shutdown(void); extern void tlshd_log_close(void); extern void tlshd_log_success(const char *hostname, const struct sockaddr *sap, socklen_t salen); extern void tlshd_log_failure(const char *hostname, const struct sockaddr *sap, socklen_t salen); extern void tlshd_log_debug(const char *fmt, ...); extern void tlshd_log_notice(const char *fmt, ...); extern void tlshd_log_error(const char *fmt, ...); extern void tlshd_log_perror(const char *prefix); extern void tlshd_log_gai_error(int error); extern void tlshd_log_cert_verification_error(gnutls_session_t session); extern void tlshd_log_gnutls_error(int error); extern void tlshd_gnutls_log_func(int level, const char *msg); extern void tlshd_gnutls_audit_func(gnutls_session_t session, const char *msg); void tlshd_log_gerror(const char *msg, GError *error); void tlshd_log_nl_error(const char *msg, int err); /* netlink.c */ extern void tlshd_genl_dispatch(void); extern int tlshd_genl_get_handshake_parms(struct tlshd_handshake_parms *parms); extern void tlshd_genl_done(struct tlshd_handshake_parms *parms); /* server.c */ extern void tlshd_serverhello_handshake(struct tlshd_handshake_parms *parms); #define TLS_DEFAULT_PRIORITIES (NULL) #define TLS_NO_PEERID (0) #define TLS_NO_CERT (0) #define TLS_NO_PRIVKEY (0) /* Max number of (chained) certs to load */ #define TLSHD_MAX_CERTS 10 07070100000024000081A400000000000000000000000165FC3A6A00000A96000000000000000000000000000000000000003000000000ktls-utils-0.10+12.gc3923f7/src/tlshd/tlshd.man.\" .\" Copyright (c) 2022 Oracle and/or its affiliates. .\" .\" ktls-utils 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; version 2. .\" .\" 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, write to the Free Software .\" Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA .\" 02110-1301, USA. .\" .\" tlshd(8) .\" .\" Copyright (c) 2021 Oracle and/or its affiliates. .TH tlshd 8 "20 Dec 2021" .SH NAME tlshd \- TLS handshake for kernel TLS sockets .SH SYNOPSIS .BI "/usr/sbin/tlshd [" options "]" .SH DESCRIPTION The .B tlshd program implements a user agent that services TLS handshake requests on behalf of kernel TLS consumers. Using the .BR accept (2) system call, it materializes kernel socket endpoints in user space in order to perform TLS handshakes using a TLS library. After each handshake completes, .B tlshd plants TLS session metadata into the kernel socket to enable the use of kTLS to secure subsequent communication on that socket. .SH OPTIONS .TP .B \-c " or " \-\-config When specified this option sets the location for .BR tlshd 's config file. .TP .B \-h " or " \-\-help When specified .B tlshd displays a help message then exits immediately. .TP .B \-s " or " \-\-stderr When specified this option forces messages to go to both .I stderr and the system log. By default, messages go only to the system log. .TP .B \-v " or " \-\-version When specified .B tlshd displays build version information then exits immediately. .SH ENVIRONMENT VARIABLES The GnuTLS library provides certain capabilities that can be enabled by setting environment variables before .B tlshd is started. More information about these variables is available in GnuTLS library documentation. .TP .B SSLKEYLOGFILE When set, this variable specifies the pathname of a file to which the GnuTLS library appends negotiated session keys in the NSS Key Log format. The NSS Key Log format can be read by wireshark, enabling decryption of recorded sessions. .TP .B GNUTLS_FORCE_FIPS_MODE When set to `1', this variable forces the TLS library into FIPS mode if FIPS140-2 support is available. .SH NOTES This software is a prototype. It's purpose is for demonstration and as a proof-of-concept. USE THIS SOFTWARE AT YOUR OWN RISK. .SH SEE ALSO .BR tlshd.conf (5), .BR ssl (7) .SH AUTHOR Chuck Lever 07070100000025000041ED00000000000000000000000265FC3A6A00000000000000000000000000000000000000000000002400000000ktls-utils-0.10+12.gc3923f7/systemd07070100000026000081A400000000000000000000000165FC3A6A0000039A000000000000000000000000000000000000003000000000ktls-utils-0.10+12.gc3923f7/systemd/Makefile.am# # Copyright (c) 2022 Oracle and/or its affiliates. # # ktls-utils 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; version 2. # # 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, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA # 02110-1301, USA. # unit_files = tlshd.service EXTRA_DIST = $(unit_files) MAINTAINERCLEANFILES = Makefile.in if INSTALL_SYSTEMD install-data-hook: $(unit_files) mkdir -p $(DESTDIR)/$(unitdir) cp $(unit_files) $(DESTDIR)/$(unitdir) endif 07070100000027000081A400000000000000000000000165FC3A6A000000E2000000000000000000000000000000000000003200000000ktls-utils-0.10+12.gc3923f7/systemd/tlshd.service[Unit] Description=Handshake service for kernel TLS consumers Documentation=man:tlshd(8) DefaultDependencies=no Before=remote-fs-pre.target [Service] Type=simple ExecStart=/usr/sbin/tlshd [Install] WantedBy=remote-fs.target 07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!388 blocks
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