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module Oxidized
class GitCrypt < Output
class GitCryptError < OxidizedError; end
begin
require 'git'
rescue LoadError
raise OxidizedError, 'git not found: sudo gem install git'
end
attr_reader :commitref
def initialize
@cfg = Oxidized.config.output.gitcrypt
@gitcrypt_cmd = "/usr/bin/git-crypt"
@gitcrypt_init = @gitcrypt_cmd + " init"
@gitcrypt_unlock = @gitcrypt_cmd + " unlock"
@gitcrypt_lock = @gitcrypt_cmd + " lock"
@gitcrypt_adduser = @gitcrypt_cmd + " add-gpg-user --trusted "
end
def setup
if @cfg.empty?
Oxidized.asetus.user.output.gitcrypt.user = 'Oxidized'
Oxidized.asetus.user.output.gitcrypt.email = 'o@example.com'
Oxidized.asetus.user.output.gitcrypt.repo = File.join(Config::Root, 'oxidized.git')
Oxidized.asetus.save :user
raise NoConfig, 'no output git config, edit ~/.config/oxidized/config'
end
if @cfg.repo.respond_to?(:each)
@cfg.repo.each do |group, repo|
@cfg.repo["#{group}="] = File.expand_path repo
end
else
@cfg.repo = File.expand_path @cfg.repo
end
end
def crypt_init repo
repo.chdir do
system(@gitcrypt_init)
@cfg.users.each do |user|
system("#{@gitcrypt_adduser} #{user}")
end
File.write(".gitattributes", "* filter=git-crypt diff=git-crypt\n.gitattributes !filter !diff")
repo.add(".gitattributes")
repo.commit("Initial commit: crypt all config files")
end
end
def lock repo
repo.chdir do
system(@gitcrypt_lock)
end
end
def unlock repo
repo.chdir do
system(@gitcrypt_unlock)
end
end
def store file, outputs, opt = {}
@msg = opt[:msg]
@user = (opt[:user] or @cfg.user)
@email = (opt[:email] or @cfg.email)
@opt = opt
@commitref = nil
repo = @cfg.repo
outputs.types.each do |type|
type_cfg = ''
type_repo = File.join(File.dirname(repo), type + '.git')
outputs.type(type).each do |output|
(type_cfg << output; next) if not output.name
type_file = file + '--' + output.name
if @cfg.type_as_directory?
type_file = type + '/' + type_file
type_repo = repo
end
update type_repo, type_file, output
end
update type_repo, file, type_cfg
end
update repo, file, outputs.to_cfg
end
def fetch node, group
begin
repo, path = yield_repo_and_path(node, group)
repo = Git.open repo
unlock repo
index = repo.index
# Empty repo ?
empty = File.exists? index.path
if empty
raise 'Empty git repo'
else
File.read path
end
lock repo
rescue
'node not found'
end
end
# give a hash of all oid revision for the given node, and the date of the commit
def version node, group
begin
repo, path = yield_repo_and_path(node, group)
repo = Git.open repo
unlock repo
walker = repo.log.path(path)
i = -1
tab = []
walker.each do |commit|
hash = {}
hash[:date] = commit.date.to_s
hash[:oid] = commit.objectish
hash[:author] = commit.author
hash[:message] = commit.message
tab[i += 1] = hash
end
walker.reset
tab
rescue
'node not found'
end
end
# give the blob of a specific revision
def get_version node, group, oid
begin
repo, path = yield_repo_and_path(node, group)
repo = Git.open repo
unlock repo
repo.gtree(oid).files[path].contents
rescue
'version not found'
ensure
lock repo
end
end
# give a hash with the patch of a diff between 2 revision and the stats (added and deleted lines)
def get_diff node, group, oid1, oid2
begin
diff_commits = nil
repo, path = yield_repo_and_path(node, group)
repo = Git.open repo
unlock repo
commit = repo.gcommit(oid1)
if oid2
commit_old = repo.gcommit(oid2)
diff = repo.diff(commit_old, commit)
stats = [diff.stats[:files][node.name][:insertions], diff.stats[:files][node.name][:deletions]]
diff.each do |patch|
if /#{node.name}\s+/.match(patch.patch.to_s.lines.first)
diff_commits = { :patch => patch.patch.to_s, :stat => stats }
break
end
end
else
stat = commit.parents[0].diff(commit).stats
stat = [stat[:files][node.name][:insertions], stat[:files][node.name][:deletions]]
patch = commit.parents[0].diff(commit).patch
diff_commits = { :patch => patch, :stat => stat }
end
lock repo
diff_commits
rescue
'no diffs'
ensure
lock repo
end
end
private
def yield_repo_and_path(node, group)
repo, path = node.repo, node.name
if group and @cfg.single_repo?
path = "#{group}/#{node.name}"
end
[repo, path]
end
def update repo, file, data
return if data.empty?
if @opt[:group]
if @cfg.single_repo?
file = File.join @opt[:group], file
else
repo = if repo.is_a?(::String)
File.join File.dirname(repo), @opt[:group] + '.git'
else
repo[@opt[:group]]
end
end
end
begin
update_repo repo, file, data, @msg, @user, @email
rescue Git::GitExecuteError, ArgumentError => open_error
Oxidized.logger.debug "open_error #{open_error} #{file}"
begin
grepo = Git.init repo
crypt_init grepo
rescue => create_error
raise GitCryptError, "first '#{open_error.message}' was raised while opening git repo, then '#{create_error.message}' was while trying to create git repo"
end
retry
end
end
def update_repo repo, file, data, msg, user, email
grepo = Git.open repo
grepo.config('user.name', user)
grepo.config('user.email', email)
grepo.chdir do
unlock grepo
File.write(file, data)
grepo.add(file)
if grepo.status[file].nil?
grepo.commit(msg)
@commitref = grepo.log(1).first.objectish
true
elsif !grepo.status[file].type.nil?
grepo.commit(msg)
@commitref = grepo.log(1).first.objectish
true
end
lock grepo
end
end
end
end
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