279 lines
8 KiB
Ruby
279 lines
8 KiB
Ruby
# frozen_string_literal: true
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require 'base64'
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require 'json'
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require 'securerandom'
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require 'uri'
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module Gitlab
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class Workhorse
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SEND_DATA_HEADER = 'Gitlab-Workhorse-Send-Data'
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VERSION_FILE = 'GITLAB_WORKHORSE_VERSION'
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INTERNAL_API_CONTENT_TYPE = 'application/vnd.gitlab-workhorse+json'
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INTERNAL_API_REQUEST_HEADER = 'Gitlab-Workhorse-Api-Request'
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NOTIFICATION_CHANNEL = 'workhorse:notifications'
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ALLOWED_GIT_HTTP_ACTIONS = %w[git_receive_pack git_upload_pack info_refs].freeze
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DETECT_HEADER = 'Gitlab-Workhorse-Detect-Content-Type'
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ARCHIVE_FORMATS = %w(zip tar.gz tar.bz2 tar).freeze
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include JwtAuthenticatable
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class << self
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def git_http_ok(repository, repo_type, user, action, show_all_refs: false)
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raise "Unsupported action: #{action}" unless ALLOWED_GIT_HTTP_ACTIONS.include?(action.to_s)
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attrs = {
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GL_ID: Gitlab::GlId.gl_id(user),
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GL_REPOSITORY: repo_type.identifier_for_container(repository.container),
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GL_USERNAME: user&.username,
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ShowAllRefs: show_all_refs,
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Repository: repository.gitaly_repository.to_h,
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GitConfigOptions: [],
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GitalyServer: {
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address: Gitlab::GitalyClient.address(repository.storage),
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token: Gitlab::GitalyClient.token(repository.storage),
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features: Feature::Gitaly.server_feature_flags
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}
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}
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# Custom option for git-receive-pack command
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receive_max_input_size = Gitlab::CurrentSettings.receive_max_input_size.to_i
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if receive_max_input_size > 0
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attrs[:GitConfigOptions] << "receive.maxInputSize=#{receive_max_input_size.megabytes}"
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end
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attrs
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end
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def send_git_blob(repository, blob)
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params = {
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'GitalyServer' => gitaly_server_hash(repository),
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'GetBlobRequest' => {
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repository: repository.gitaly_repository.to_h,
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oid: blob.id,
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limit: -1
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}
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}
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[
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SEND_DATA_HEADER,
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"git-blob:#{encode(params)}"
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]
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end
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def send_git_archive(repository, ref:, format:, append_sha:, path: nil)
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format ||= 'tar.gz'
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format = format.downcase
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metadata = repository.archive_metadata(
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ref,
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Gitlab.config.gitlab.repository_downloads_path,
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format,
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append_sha: append_sha,
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path: path
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)
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raise "Repository or ref not found" if metadata.empty?
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params = send_git_archive_params(repository, metadata, path, archive_format(format))
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# If present, DisableCache must be a Boolean. Otherwise
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# workhorse ignores it.
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params['DisableCache'] = true if git_archive_cache_disabled?
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params['GitalyServer'] = gitaly_server_hash(repository)
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[
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SEND_DATA_HEADER,
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"git-archive:#{encode(params)}"
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]
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end
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def send_git_snapshot(repository)
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params = {
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'GitalyServer' => gitaly_server_hash(repository),
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'GetSnapshotRequest' => Gitaly::GetSnapshotRequest.new(
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repository: repository.gitaly_repository
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).to_json
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}
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[
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SEND_DATA_HEADER,
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"git-snapshot:#{encode(params)}"
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]
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end
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def send_git_diff(repository, diff_refs)
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params = {
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'GitalyServer' => gitaly_server_hash(repository),
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'RawDiffRequest' => Gitaly::RawDiffRequest.new(
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gitaly_diff_or_patch_hash(repository, diff_refs)
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).to_json
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}
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[
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SEND_DATA_HEADER,
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"git-diff:#{encode(params)}"
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]
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end
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def send_git_patch(repository, diff_refs)
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params = {
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'GitalyServer' => gitaly_server_hash(repository),
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'RawPatchRequest' => Gitaly::RawPatchRequest.new(
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gitaly_diff_or_patch_hash(repository, diff_refs)
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).to_json
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}
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[
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SEND_DATA_HEADER,
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"git-format-patch:#{encode(params)}"
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]
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end
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def send_artifacts_entry(file, entry)
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archive = file.file_storage? ? file.path : file.url
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params = {
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'Archive' => archive,
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'Entry' => Base64.encode64(entry.to_s)
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}
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[
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SEND_DATA_HEADER,
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"artifacts-entry:#{encode(params)}"
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]
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end
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def send_url(url, allow_redirects: false)
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params = {
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'URL' => url,
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'AllowRedirects' => allow_redirects
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}
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[
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SEND_DATA_HEADER,
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"send-url:#{encode(params)}"
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]
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end
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def send_scaled_image(location, width, content_type)
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params = {
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'Location' => location,
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'Width' => width,
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'ContentType' => content_type
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}
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[
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SEND_DATA_HEADER,
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"send-scaled-img:#{encode(params)}"
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]
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end
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def channel_websocket(channel)
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details = {
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'Channel' => {
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'Subprotocols' => channel[:subprotocols],
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'Url' => channel[:url],
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'Header' => channel[:headers],
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'MaxSessionTime' => channel[:max_session_time]
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}
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}
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details['Channel']['CAPem'] = channel[:ca_pem] if channel.key?(:ca_pem)
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details
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end
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def version
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path = Rails.root.join(VERSION_FILE)
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path.readable? ? path.read.chomp : 'unknown'
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end
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def verify_api_request!(request_headers)
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decode_jwt(request_headers[INTERNAL_API_REQUEST_HEADER])
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end
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def decode_jwt(encoded_message)
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decode_jwt_for_issuer('gitlab-workhorse', encoded_message)
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end
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def secret_path
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Gitlab.config.workhorse.secret_file
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end
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def set_key_and_notify(key, value, expire: nil, overwrite: true)
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Gitlab::Redis::SharedState.with do |redis|
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result = redis.set(key, value, ex: expire, nx: !overwrite)
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if result
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redis.publish(NOTIFICATION_CHANNEL, "#{key}=#{value}")
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value
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else
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redis.get(key)
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end
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end
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end
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protected
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# This is the outermost encoding of a senddata: header. It is safe for
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# inclusion in HTTP response headers
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def encode(hash)
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Base64.urlsafe_encode64(Gitlab::Json.dump(hash))
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end
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# This is for encoding individual fields inside the senddata JSON that
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# contain binary data. In workhorse, the corresponding struct field should
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# be type []byte
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def encode_binary(binary)
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Base64.encode64(binary)
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end
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def gitaly_server_hash(repository)
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{
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address: Gitlab::GitalyClient.address(repository.shard),
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token: Gitlab::GitalyClient.token(repository.shard),
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features: Feature::Gitaly.server_feature_flags
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}
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end
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def gitaly_diff_or_patch_hash(repository, diff_refs)
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{
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repository: repository.gitaly_repository,
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left_commit_id: diff_refs.base_sha,
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right_commit_id: diff_refs.head_sha
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}
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end
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def git_archive_cache_disabled?
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ENV['WORKHORSE_ARCHIVE_CACHE_DISABLED'].present? || Feature.enabled?(:workhorse_archive_cache_disabled)
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end
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def archive_format(format)
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case format
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when "tar.bz2", "tbz", "tbz2", "tb2", "bz2"
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Gitaly::GetArchiveRequest::Format::TAR_BZ2
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when "tar"
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Gitaly::GetArchiveRequest::Format::TAR
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when "zip"
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Gitaly::GetArchiveRequest::Format::ZIP
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else
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Gitaly::GetArchiveRequest::Format::TAR_GZ
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end
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end
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def send_git_archive_params(repository, metadata, path, format)
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{
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'ArchivePath' => metadata['ArchivePath'],
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'GetArchiveRequest' => encode_binary(
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Gitaly::GetArchiveRequest.new(
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repository: repository.gitaly_repository,
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commit_id: metadata['CommitId'],
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prefix: metadata['ArchivePrefix'],
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format: format,
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path: path.presence || ""
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).to_proto
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)
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}
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end
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end
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end
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end
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