├── .gitignore ├── CODEOWNERS ├── COPYING ├── LICENSE ├── README.md ├── RELEASE_NOTES ├── Vagrantfile ├── bin ├── canon-zip ├── gbuild ├── gsign ├── gverify └── make-base-vm ├── contrib ├── README.md ├── devtools │ ├── README.md │ └── github-merge.py └── verify-commits │ ├── README.md │ ├── allow-revsig-commits │ ├── gpg.sh │ ├── pre-push-hook.sh │ ├── trusted-git-root │ ├── trusted-keys │ └── verify-commits.sh ├── doc ├── CACHE ├── DOWNLOADER.md └── NOTES ├── etc ├── lxc.3.config.in └── lxc.config.in ├── libexec ├── config-bootstrap-fixup ├── config-lxc ├── copy-from-target ├── copy-to-target ├── gconfig ├── make-clean-vm ├── on-target ├── start-target └── stop-target ├── share └── gitian_updater.py └── target-bin ├── bootstrap-fixup.in ├── grab-packages.sh ├── init-build.sh └── upgrade-system.sh /.gitignore: -------------------------------------------------------------------------------- 1 | *-stamp 2 | *.substvars 3 | *.log 4 | *.pyc 5 | build 6 | var 7 | result 8 | inputs 9 | base* 10 | *.qcow2 11 | sigs 12 | target-bin/bootstrap-fixup 13 | .vagrant 14 | docker 15 | *.Dockerfile 16 | cache 17 | target-* 18 | -------------------------------------------------------------------------------- /CODEOWNERS: -------------------------------------------------------------------------------- 1 | * @devrandom 2 | -------------------------------------------------------------------------------- /COPYING: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Copyright 2009-2013 Gitian Developers 2 | 3 | This program is free software: you can redistribute it and/or modify 4 | it under the terms of the GNU General Public License as published by 5 | the Free Software Foundation, either version 3 of the License, or 6 | (at your option) any later version. 7 | 8 | Exception: for the sake of clarity, an exception is granted to all 9 | outputs from Gitian tools. The license shall not apply to outputs, 10 | and their individual licenses shall apply. 11 | 12 | This program is distributed in the hope that it will be useful, 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | GNU General Public License for more details. 16 | 17 | You should have received a copy of the GNU General Public License 18 | along with this program. If not, see . 19 | 20 | Developers include: 21 | 22 | * Miron Cuperman 23 | * Matt Corallo 24 | * Gavin Andresen 25 | * Luke Dashjr 26 | * Pieter Wuille 27 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Gitian 2 | 3 | Read about the project goals at the [project home page](https://gitian.org/). 4 | 5 | This package can do a deterministic build of a package inside a VM. 6 | 7 | ## Deterministic build inside a VM 8 | 9 | This performs a build inside a VM, with deterministic inputs and outputs. If the build script takes care of all sources of non-determinism (mostly caused by timestamps), the result will always be the same. This allows multiple independent verifiers to sign a binary with the assurance that it really came from the source they reviewed. 10 | 11 | ## Prerequisites: 12 | 13 | ### Arch: 14 | 15 | sudo pacman -S python2-cheetah qemu rsync 16 | sudo pacman -S lxc libvirt bridge-utils # for lxc mode 17 | 18 | From AUR: 19 | 20 | * [apt-cacher-ng](https://aur.archlinux.org/packages/apt-cacher-ng/) (you may have to play with permissions (chown to apt-cacher-ng) on files to get apt-cacher-ng to start) 21 | * [debootstrap](https://aur.archlinux.org/packages/debootstrap-git/) 22 | * [dpkg](https://aur.archlinux.org/packages/dpkg/) 23 | * [gnupg1](https://aur.archlinux.org/packages/gnupg1/) 24 | * [multipath-tools](https://aur.archlinux.org/packages/multipath-tools/) (for kpartx) 25 | 26 | Non-AUR packages: 27 | 28 | * [debian-archive-keyring](https://packages.debian.org/jessie/debian-archive-keyring) (for making Debian guests) 29 | * [ubuntu-keyring](https://packages.ubuntu.com/search?keywords=ubuntu-keyring) (for making Ubuntu guests) 30 | 31 | From newroco on GitHub: 32 | 33 | * [vmbuilder](https://github.com/newroco/vmbuilder) 34 | 35 | Also, I had to modify the default /etc/sudoers file to uncomment the `secure_path` line, because vmbuilder isn't found otherwise when the `env -i ... sudo vmbuilder ...` line is executed (because the i flag resets the environment variables including the PATH). 36 | 37 | ### Gentoo: 38 | 39 | layman -a luke-jr # needed for vmbuilder 40 | sudo emerge dev-vcs/git net-misc/apt-cacher-ng app-emulation/vmbuilder dev-lang/ruby 41 | sudo emerge app-emulation/qemu 42 | export KVM=qemu-system-x86_64 43 | 44 | ### Ubuntu: 45 | 46 | This pulls in all pre-requisites for KVM building on Ubuntu: 47 | 48 | sudo apt-get install git apache2 apt-cacher-ng python-vm-builder ruby qemu-utils 49 | 50 | If you'd like to use LXC mode instead, install it as follows: 51 | 52 | sudo apt-get install lxc 53 | 54 | If you'd like to use docker mode instead, install it as follows: 55 | 56 | sudo apt-get install docker-ce 57 | 58 | ### Debian: 59 | 60 | See Ubuntu, and also run the following on Debian Jessie or newer: 61 | 62 | sudo apt-get install ubuntu-archive-keyring 63 | 64 | On Debian Wheezy you run the same command, but you must first add backports to your system, because the package is only available in wheezy-backports. 65 | 66 | ### OSX with MacPorts: 67 | 68 | sudo port install ruby coreutils 69 | export PATH=$PATH:/opt/local/libexec/gnubin # Needed for sha256sum 70 | 71 | ### OSX with Homebrew: 72 | 73 | brew install ruby coreutils 74 | export PATH=$PATH:/opt/local/libexec/gnubin 75 | 76 | #### VirtualBox: 77 | 78 | Install virtualbox from http://www.virtualbox.org, and make sure `VBoxManage` is in your `$PATH`. 79 | 80 | ## Debian Guests 81 | 82 | Gitian supports Debian guests in addition to Ubuntu guests. Note that this doesn't mean you can allow the builders to choose to use either Debian or Ubuntu guests. The person creating the Gitian descriptor will need to choose a particular distro and suite for the guest and all builders must use that particular distro and suite, otherwise the software won't reproduce for everyone. 83 | 84 | To create a Debian guest: 85 | 86 | bin/make-base-vm --distro debian --suite jessie 87 | 88 | There is currently no support for LXC Debian guests. There is just KVM support. LXC support for Debian guests is planned to be added soon. 89 | 90 | Only Debian Jessie guests have been tested with Gitian. If you have success (or trouble) with other versions of Debian, please let us know. 91 | 92 | If you are creating a Gitian descriptor, you can now specify a distro. If no distro is provided, the default is to assume Ubuntu. Since Ubuntu is assumed, older Gitian descriptors that don't specify a distro will still work as they always have. 93 | 94 | ## Create the base VM for use in further builds 95 | **NOTE:** requires `sudo`, please review the script 96 | 97 | ### KVM 98 | 99 | bin/make-base-vm 100 | bin/make-base-vm --arch i386 101 | 102 | ### LXC 103 | 104 | bin/make-base-vm --lxc 105 | bin/make-base-vm --lxc --arch i386 106 | 107 | Set the `USE_LXC` environment variable to use `LXC` instead of `KVM`: 108 | 109 | export USE_LXC=1 110 | 111 | ### Docker 112 | 113 | bin/make-base-vm --docker 114 | bin/make-base-vm --docker --arch i386 115 | 116 | Set the `USE_DOCKER` environment variable to use `DOCKER` instead of `KVM`: 117 | 118 | export USE_DOCKER=1 119 | 120 | ### VirtualBox 121 | 122 | Command-line `VBoxManage` must be in your `$PATH`. 123 | 124 | #### Setup: 125 | 126 | `make-base-vm` cannot yet make VirtualBox virtual machines ( _patches welcome_, it should be possible to use `VBoxManage`, boot-from-network Linux images and PXE booting to do it). So you must either get or manually create VirtualBox machines that: 127 | 128 | 1. Are named `Gitian--` -- e.g. Gitian-xenial-i386 for a 32-bit, Ubuntu 16 machine. 129 | 2. Have a booted-up snapshot named `Gitian-Clean` . The build script resets the VM to that snapshot to get reproducible builds. 130 | 3. Has the VM's NAT networking setup to forward port `localhost:2223` on the host machine to port `22` of the VM; e.g.: 131 | 132 | ``` 133 | VBoxManage modifyvm Gitian-xenial-i386 --natpf1 "guestssh,tcp,,2223,,22" 134 | ``` 135 | 136 | The final setup needed is to create an `ssh` key that will be used to login to the virtual machine: 137 | 138 | ssh-keygen -t rsa -f var/id_rsa -N "" 139 | ssh -p 2223 ubuntu@localhost 'mkdir -p .ssh && chmod 700 .ssh && cat >> .ssh/authorized_keys' < var/id_rsa.pub 140 | 141 | Then log into the vm and copy the `ssh` keys to root's `authorized_keys` file. 142 | 143 | ssh -p 2223 ubuntu@localhost 144 | # Now in the vm 145 | sudo bash 146 | mkdir -p .ssh && chmod 700 .ssh && cat ~ubuntu/.ssh/authorized_keys >> .ssh/authorized_keys 147 | 148 | Set the `USE_VBOX` environment variable to use `VBOX` instead of `KVM`: 149 | 150 | export USE_VBOX=1 151 | 152 | ## Sanity-testing 153 | 154 | If you have everything set-up properly, you should be able to: 155 | 156 | PATH=$PATH:$(pwd)/libexec 157 | make-clean-vm --suite xenial --arch i386 158 | 159 | # on-target needs $DISTRO to be set to debian if using a Debian guest 160 | # (when running gbuild, $DISTRO is set based on the descriptor, so this line isn't needed) 161 | DISTRO=debian 162 | 163 | # For LXC: 164 | LXC_ARCH=i386 LXC_SUITE=xenial on-target ls -la 165 | 166 | # For KVM: 167 | start-target 32 xenial-i386 & 168 | # wait a few seconds for VM to start 169 | on-target ls -la 170 | stop-target 171 | 172 | ## Building 173 | 174 | Copy any additional build inputs into a directory named _inputs_. 175 | 176 | Then execute the build using a `YAML` description file (can be run as non-root): 177 | 178 | export USE_LXC=1 # LXC only 179 | bin/gbuild .yml 180 | 181 | or if you need to specify a commit for one of the git remotes: 182 | 183 | bin/gbuild --commit = .yml 184 | 185 | The resulting report will appear in `result/-res.yml` 186 | 187 | To sign the result, perform: 188 | 189 | bin/gsign --signer --release .yml 190 | 191 | Where `` is your signing PGP key ID and `` is the name for the current release. This will put the result and signature in the `sigs//`. The `sigs/` directory can be managed through git to coordinate multiple signers. 192 | 193 | After you've merged everybody's signatures, verify them: 194 | 195 | bin/gverify --release .yml 196 | 197 | 198 | ## Poking around 199 | 200 | * Log files are captured to the _var_ directory 201 | * You can run the utilities in libexec by running `PATH="libexec:$PATH"` 202 | * To start the target VM run `start-target 32 xenial-i386` or `start-target 64 xenial-amd64` 203 | * To ssh into the target run `on-target` (after setting $DISTRO to debian if using a Debian guest) or `on-target -u root` 204 | * On the target, the _build_ directory contains the code as it is compiled and _install_ contains intermediate libraries 205 | * By convention, the script in `.yml` starts with any environment setup you would need to manually compile things on the target 206 | 207 | TODO: 208 | - disable sudo in target, just in case of a hypervisor exploit 209 | - tar and other archive timestamp setter 210 | 211 | ## LXC tips 212 | 213 | `bin/gbuild` runs `lxc-execute` or `lxc-start`, which may require root. If you are in the admin group, you can add the following sudoers line to prevent asking for the password every time: 214 | 215 | %admin ALL=NOPASSWD: /usr/bin/lxc-execute 216 | %admin ALL=NOPASSWD: /usr/bin/lxc-start 217 | 218 | Right now `lxc-start` is the default, but you can force `lxc-execute` (useful for Ubuntu 14.04) with: 219 | 220 | export LXC_EXECUTE=lxc-execute 221 | 222 | Recent distributions allow lxc-execute / lxc-start to be run by non-privileged users, so you might be able to rip-out the `sudo` calls in `libexec/*`. 223 | 224 | If you have a runaway `lxc-start` command, just use `kill -9` on it. 225 | 226 | The machine configuration requires access to br0 and assumes that the host address is `10.0.2.2`: 227 | 228 | sudo brctl addbr br0 229 | sudo ifconfig br0 10.0.2.2/24 up 230 | 231 | ## Tests 232 | 233 | Not very extensive, currently. 234 | 235 | `python -m unittest discover test` 236 | -------------------------------------------------------------------------------- /RELEASE_NOTES: -------------------------------------------------------------------------------- 1 | 2017-02-14 2 | ---------- 3 | 4 | - VirtualBox launches are now headless. You can use the VirtualBox Manager to open the console UI if needed. 5 | - Debian on VirtualBox is supported via Vagrant Cloud images 6 | - Note that Debian on kvm is currently not supported because vmbuilder fails in the grub install stage 7 | - git submodule support - any submodules are cloned and checked out 8 | - Note that lxc-execute in Ubuntu 17.10 has a showstopper bug in stdin handling 9 | 10 | 2015-12-12 11 | ---------- 12 | 13 | Since OpenSSH removed support for DSS, Gitian now uses RSA keys instead. Base images should be regenerated. 14 | 15 | 2015-05-16 16 | ---------- 17 | 18 | LXC support has been revamped: 19 | 20 | * debootstrap is now used directly, so that no kernel or grub packages are installed 21 | * an attempt has been made to eliminate cases where an update of a package can fail because the container is missing a real init/upstart process 22 | 23 | 2015-03-23 24 | ---------- 25 | 26 | Now ensuring that `apt-get dist-upgrade` occurs at least once before package manifest 27 | is computed. This is because distributions usually don't store old versions of packages 28 | in the repos, so we can't download the exact package version we have installed if it's 29 | out of date. 30 | 31 | gbuild now has a --upgrade flag that forces an upgrade after the first one. 32 | 33 | Other Notes 34 | =========== 35 | 36 | Important: 37 | 38 | We are planning on switching from using lxc-start to using lxc-execute. lxc-execute requires lxc-init (or init.lxc) to be available on the guest at one of the expected places. You might have to manually install lxc on your base VM image or recreate the image. 39 | 40 | To enable this now (required for Ubuntu 14.04), do: 41 | 42 | export LXC_EXECUTE=lxc-execute 43 | 44 | If your guest is more recent than the host, all bets are off, since lxc-execute may not be able to find the lxc init. 45 | -------------------------------------------------------------------------------- /Vagrantfile: -------------------------------------------------------------------------------- 1 | $script = <