diff options
author | Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com> | 2017-07-27 18:29:39 +0300 |
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committer | Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com> | 2017-07-27 18:29:39 +0300 |
commit | ac0cbe69706a2d3013d37adda7514824a2d06ed4 (patch) | |
tree | 7730163984394f4e79711c609a2d1da2bb4f807e /lib | |
parent | 9981814514742a2ee507d4dcc2fd71099fd96585 (diff) | |
parent | 5ebccab1eb74f7bf9f7f9d4f2d9a56fb81754cbe (diff) |
Merge branch 'feature/gpg-signed-commits' into 'master'
GPG signed commits
Closes #20268
See merge request !9546
Diffstat (limited to 'lib')
-rw-r--r-- | lib/gitlab/git/commit.rb | 11 | ||||
-rw-r--r-- | lib/gitlab/gpg.rb | 62 | ||||
-rw-r--r-- | lib/gitlab/gpg/commit.rb | 85 | ||||
-rw-r--r-- | lib/gitlab/gpg/invalid_gpg_signature_updater.rb | 19 |
4 files changed, 176 insertions, 1 deletions
diff --git a/lib/gitlab/git/commit.rb b/lib/gitlab/git/commit.rb index 09511cc6504..ca7e3a7c4be 100644 --- a/lib/gitlab/git/commit.rb +++ b/lib/gitlab/git/commit.rb @@ -319,6 +319,15 @@ module Gitlab end end + # Get the gpg signature of this commit. + # + # Ex. + # commit.signature(repo) + # + def signature(repo) + Rugged::Commit.extract_signature(repo.rugged, sha) + end + def stats Gitlab::Git::CommitStats.new(self) end @@ -327,7 +336,7 @@ module Gitlab begin raw_commit.to_mbox(options) rescue Rugged::InvalidError => ex - if ex.message =~ /Commit \w+ is a merge commit/ + if ex.message =~ /commit \w+ is a merge commit/i 'Patch format is not currently supported for merge commits.' end end diff --git a/lib/gitlab/gpg.rb b/lib/gitlab/gpg.rb new file mode 100644 index 00000000000..e1d1724295a --- /dev/null +++ b/lib/gitlab/gpg.rb @@ -0,0 +1,62 @@ +module Gitlab + module Gpg + extend self + + module CurrentKeyChain + extend self + + def add(key) + GPGME::Key.import(key) + end + + def fingerprints_from_key(key) + import = GPGME::Key.import(key) + + return [] if import.imported == 0 + + import.imports.map(&:fingerprint) + end + end + + def fingerprints_from_key(key) + using_tmp_keychain do + CurrentKeyChain.fingerprints_from_key(key) + end + end + + def primary_keyids_from_key(key) + using_tmp_keychain do + fingerprints = CurrentKeyChain.fingerprints_from_key(key) + + GPGME::Key.find(:public, fingerprints).map { |raw_key| raw_key.primary_subkey.keyid } + end + end + + def user_infos_from_key(key) + using_tmp_keychain do + fingerprints = CurrentKeyChain.fingerprints_from_key(key) + + GPGME::Key.find(:public, fingerprints).flat_map do |raw_key| + raw_key.uids.map { |uid| { name: uid.name, email: uid.email } } + end + end + end + + def using_tmp_keychain + Dir.mktmpdir do |dir| + @original_dirs ||= [GPGME::Engine.dirinfo('homedir')] + @original_dirs.push(dir) + + GPGME::Engine.home_dir = dir + + return_value = yield + + @original_dirs.pop + + GPGME::Engine.home_dir = @original_dirs[-1] + + return_value + end + end + end +end diff --git a/lib/gitlab/gpg/commit.rb b/lib/gitlab/gpg/commit.rb new file mode 100644 index 00000000000..55428b85207 --- /dev/null +++ b/lib/gitlab/gpg/commit.rb @@ -0,0 +1,85 @@ +module Gitlab + module Gpg + class Commit + attr_reader :commit + + def initialize(commit) + @commit = commit + + @signature_text, @signed_text = commit.raw.signature(commit.project.repository) + end + + def has_signature? + !!(@signature_text && @signed_text) + end + + def signature + return unless has_signature? + + cached_signature = GpgSignature.find_by(commit_sha: commit.sha) + return cached_signature if cached_signature.present? + + using_keychain do |gpg_key| + create_cached_signature!(gpg_key) + end + end + + def update_signature!(cached_signature) + using_keychain do |gpg_key| + cached_signature.update_attributes!(attributes(gpg_key)) + end + end + + private + + def using_keychain + Gitlab::Gpg.using_tmp_keychain do + # first we need to get the keyid from the signature to query the gpg + # key belonging to the keyid. + # This way we can add the key to the temporary keychain and extract + # the proper signature. + gpg_key = GpgKey.find_by(primary_keyid: verified_signature.fingerprint) + + if gpg_key + Gitlab::Gpg::CurrentKeyChain.add(gpg_key.key) + @verified_signature = nil + end + + yield gpg_key + end + end + + def verified_signature + @verified_signature ||= GPGME::Crypto.new.verify(@signature_text, signed_text: @signed_text) do |verified_signature| + break verified_signature + end + end + + def create_cached_signature!(gpg_key) + GpgSignature.create!(attributes(gpg_key)) + end + + def attributes(gpg_key) + user_infos = user_infos(gpg_key) + + { + commit_sha: commit.sha, + project: commit.project, + gpg_key: gpg_key, + gpg_key_primary_keyid: gpg_key&.primary_keyid || verified_signature.fingerprint, + gpg_key_user_name: user_infos[:name], + gpg_key_user_email: user_infos[:email], + valid_signature: gpg_signature_valid_signature_value(gpg_key) + } + end + + def gpg_signature_valid_signature_value(gpg_key) + !!(gpg_key && gpg_key.verified? && verified_signature.valid?) + end + + def user_infos(gpg_key) + gpg_key&.verified_user_infos&.first || gpg_key&.user_infos&.first || {} + end + end + end +end diff --git a/lib/gitlab/gpg/invalid_gpg_signature_updater.rb b/lib/gitlab/gpg/invalid_gpg_signature_updater.rb new file mode 100644 index 00000000000..3bb491120ba --- /dev/null +++ b/lib/gitlab/gpg/invalid_gpg_signature_updater.rb @@ -0,0 +1,19 @@ +module Gitlab + module Gpg + class InvalidGpgSignatureUpdater + def initialize(gpg_key) + @gpg_key = gpg_key + end + + def run + GpgSignature + .select(:id, :commit_sha, :project_id) + .where('gpg_key_id IS NULL OR valid_signature = ?', false) + .where(gpg_key_primary_keyid: @gpg_key.primary_keyid) + .find_each do |gpg_signature| + Gitlab::Gpg::Commit.new(gpg_signature.commit).update_signature!(gpg_signature) + end + end + end + end +end |