debian-mirror-gitlab/lib/api/helpers.rb
2022-11-25 23:54:43 +05:30

808 lines
24 KiB
Ruby

# frozen_string_literal: true
module API
module Helpers
include Gitlab::Utils
include Helpers::Caching
include Helpers::Pagination
include Helpers::PaginationStrategies
include Gitlab::Ci::Artifacts::Logger
include Gitlab::Utils::StrongMemoize
SUDO_HEADER = "HTTP_SUDO"
GITLAB_SHARED_SECRET_HEADER = "Gitlab-Shared-Secret"
GITLAB_SHELL_API_HEADER = "Gitlab-Shell-Api-Request"
GITLAB_SHELL_JWT_ISSUER = "gitlab-shell"
SUDO_PARAM = :sudo
API_USER_ENV = 'gitlab.api.user'
API_TOKEN_ENV = 'gitlab.api.token'
API_EXCEPTION_ENV = 'gitlab.api.exception'
API_RESPONSE_STATUS_CODE = 'gitlab.api.response_status_code'
INTEGER_ID_REGEX = /^-?\d+$/.freeze
def declared_params(options = {})
options = { include_parent_namespaces: false }.merge(options)
declared(params, options).to_h.symbolize_keys
end
def check_unmodified_since!(last_modified)
if_unmodified_since = begin
Time.parse(headers['If-Unmodified-Since'])
rescue StandardError
nil
end
if if_unmodified_since && last_modified && last_modified > if_unmodified_since
render_api_error!('412 Precondition Failed', 412)
end
end
def destroy_conditionally!(resource, last_updated: nil)
last_updated ||= resource.updated_at
check_unmodified_since!(last_updated)
status 204
body false
if block_given?
yield resource
else
resource.destroy
end
end
def job_token_authentication?
initial_current_user && @current_authenticated_job.present? # rubocop:disable Gitlab/ModuleWithInstanceVariables
end
# Returns the job associated with the token provided for
# authentication, if any
def current_authenticated_job
if try(:namespace_inheritable, :authentication)
ci_build_from_namespace_inheritable
else
@current_authenticated_job # rubocop:disable Gitlab/ModuleWithInstanceVariables
end
end
# rubocop:disable Gitlab/ModuleWithInstanceVariables
# We can't rewrite this with StrongMemoize because `sudo!` would
# actually write to `@current_user`, and `sudo?` would immediately
# call `current_user` again which reads from `@current_user`.
# We should rewrite this in a way that using StrongMemoize is possible
def current_user
return @current_user if defined?(@current_user)
@current_user = initial_current_user
Gitlab::I18n.locale = @current_user&.preferred_language
sudo!
validate_access_token!(scopes: scopes_registered_for_endpoint) unless sudo?
save_current_user_in_env(@current_user) if @current_user
save_current_token_in_env
if @current_user
::ApplicationRecord
.sticking
.stick_or_unstick_request(env, :user, @current_user.id)
end
@current_user
end
# rubocop:enable Gitlab/ModuleWithInstanceVariables
def save_current_user_in_env(user)
env[API_USER_ENV] = { user_id: user.id, username: user.username }
end
def save_current_token_in_env
token = access_token
env[API_TOKEN_ENV] = { token_id: token.id, token_type: token.class } if token
rescue Gitlab::Auth::UnauthorizedError
end
def sudo?
initial_current_user != current_user
end
def user_group
@group ||= find_group!(params[:id])
end
def user_project
@project ||= find_project!(params[:id])
end
def available_labels_for(label_parent, params = { include_ancestor_groups: true, only_group_labels: true })
if label_parent.is_a?(Project)
params.delete(:only_group_labels)
params[:project_id] = label_parent.id
else
params[:group_id] = label_parent.id
end
LabelsFinder.new(current_user, params).execute
end
def find_user(id)
UserFinder.new(id).find_by_id_or_username
end
# rubocop: disable CodeReuse/ActiveRecord
def find_project(id)
return unless id
projects = Project.without_deleted.not_hidden
if id.is_a?(Integer) || id =~ INTEGER_ID_REGEX
projects.find_by(id: id)
elsif id.include?("/")
projects.find_by_full_path(id)
end
end
# rubocop: enable CodeReuse/ActiveRecord
def find_project!(id)
project = find_project(id)
return forbidden! unless authorized_project_scope?(project)
return project if can?(current_user, :read_project, project)
return unauthorized! if authenticate_non_public?
not_found!('Project')
end
def authorized_project_scope?(project)
return true unless job_token_authentication?
return true unless route_authentication_setting[:job_token_scope] == :project
::Feature.enabled?(:ci_job_token_scope, project) &&
current_authenticated_job.project == project
end
# rubocop: disable CodeReuse/ActiveRecord
def find_group(id)
if id.to_s =~ INTEGER_ID_REGEX
Group.find_by(id: id)
else
Group.find_by_full_path(id)
end
end
# rubocop: enable CodeReuse/ActiveRecord
def find_group!(id)
group = find_group(id)
check_group_access(group)
end
# rubocop: disable CodeReuse/ActiveRecord
def find_group_by_full_path!(full_path)
group = Group.find_by_full_path(full_path)
check_group_access(group)
end
# rubocop: enable CodeReuse/ActiveRecord
def check_group_access(group)
return group if can?(current_user, :read_group, group)
return unauthorized! if authenticate_non_public?
not_found!('Group')
end
def check_namespace_access(namespace)
return namespace if can?(current_user, :read_namespace, namespace)
not_found!('Namespace')
end
# rubocop: disable CodeReuse/ActiveRecord
def find_namespace(id)
if id.to_s =~ INTEGER_ID_REGEX
Namespace.without_project_namespaces.find_by(id: id)
else
find_namespace_by_path(id)
end
end
# rubocop: enable CodeReuse/ActiveRecord
def find_namespace!(id)
check_namespace_access(find_namespace(id))
end
def find_namespace_by_path(path)
Namespace.without_project_namespaces.find_by_full_path(path)
end
def find_namespace_by_path!(path)
check_namespace_access(find_namespace_by_path(path))
end
def find_branch!(branch_name)
if Gitlab::GitRefValidator.validate(branch_name)
user_project.repository.find_branch(branch_name) || not_found!('Branch')
else
render_api_error!('The branch refname is invalid', 400)
end
end
def find_tag!(tag_name)
if Gitlab::GitRefValidator.validate(tag_name)
user_project.repository.find_tag(tag_name) || not_found!('Tag')
else
render_api_error!('The tag refname is invalid', 400)
end
end
# rubocop: disable CodeReuse/ActiveRecord
def find_project_issue(iid, project_id = nil)
project = project_id ? find_project!(project_id) : user_project
::IssuesFinder.new(
current_user,
project_id: project.id,
issue_types: WorkItems::Type.allowed_types_for_issues
).find_by!(iid: iid)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def find_project_merge_request(iid)
MergeRequestsFinder.new(current_user, project_id: user_project.id).find_by!(iid: iid)
end
# rubocop: enable CodeReuse/ActiveRecord
def find_project_commit(id)
user_project.commit_by(oid: id)
end
# rubocop: disable CodeReuse/ActiveRecord
def find_merge_request_with_access(iid, access_level = :read_merge_request)
merge_request = user_project.merge_requests.find_by!(iid: iid)
authorize! access_level, merge_request
merge_request
end
# rubocop: enable CodeReuse/ActiveRecord
def find_build!(id)
user_project.builds.find(id.to_i)
end
def find_job!(id)
user_project.processables.find(id.to_i)
end
def authenticate!
unauthorized! unless current_user
end
def authenticate_non_get!
authenticate! unless %w[GET HEAD].include?(route.request_method)
end
def authenticate_by_gitlab_shell_token!
payload, _ = JSONWebToken::HMACToken.decode(headers[GITLAB_SHELL_API_HEADER], secret_token)
unauthorized! unless payload['iss'] == GITLAB_SHELL_JWT_ISSUER
rescue JWT::DecodeError, JWT::ExpiredSignature, JWT::ImmatureSignature => ex
Gitlab::ErrorTracking.track_exception(ex)
unauthorized!
end
def authenticated_with_can_read_all_resources!
authenticate!
forbidden! unless current_user.can_read_all_resources?
end
def authenticated_as_admin!
authenticate!
forbidden! unless current_user.admin?
end
def authorize!(action, subject = :global, reason = nil)
forbidden!(reason) unless can?(current_user, action, subject)
end
def authorize_push_project
authorize! :push_code, user_project
end
def authorize_admin_tag
authorize! :admin_tag, user_project
end
def authorize_admin_project
authorize! :admin_project, user_project
end
def authorize_admin_group
authorize! :admin_group, user_group
end
def authorize_read_builds!
authorize! :read_build, user_project
end
def authorize_read_build_trace!(build)
authorize! :read_build_trace, build
end
def authorize_read_job_artifacts!(build)
authorize! :read_job_artifacts, build
end
def authorize_destroy_artifacts!
authorize! :destroy_artifacts, user_project
end
def authorize_update_builds!
authorize! :update_build, user_project
end
def require_repository_enabled!(subject = :global)
not_found!("Repository") unless user_project.feature_available?(:repository, current_user)
end
def require_gitlab_workhorse!
verify_workhorse_api!
unless env['HTTP_GITLAB_WORKHORSE'].present?
forbidden!('Request should be executed via GitLab Workhorse')
end
end
def verify_workhorse_api!
Gitlab::Workhorse.verify_api_request!(request.headers)
rescue StandardError => e
Gitlab::ErrorTracking.track_exception(e)
forbidden!
end
def require_pages_enabled!
not_found! unless user_project.pages_available?
end
def require_pages_config_enabled!
not_found! unless Gitlab.config.pages.enabled
end
def can?(object, action, subject = :global)
Ability.allowed?(object, action, subject)
end
# Checks the occurrences of required attributes, each attribute must be present in the params hash
# or a Bad Request error is invoked.
#
# Parameters:
# keys (required) - A hash consisting of keys that must be present
def required_attributes!(keys)
keys.each do |key|
bad_request_missing_attribute!(key) unless params[key].present?
end
end
def attributes_for_keys(keys, custom_params = nil)
params_hash = custom_params || params
attrs = {}
keys.each do |key|
if params_hash[key].present? || (params_hash.key?(key) && params_hash[key] == false)
attrs[key] = params_hash[key]
end
end
permitted_attrs = ActionController::Parameters.new(attrs).permit!
permitted_attrs.to_h
end
# rubocop: disable CodeReuse/ActiveRecord
def filter_by_iid(items, iid)
items.where(iid: iid)
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def filter_by_title(items, title)
items.where(title: title)
end
# rubocop: enable CodeReuse/ActiveRecord
def filter_by_search(items, text)
items.search(text)
end
def order_options_with_tie_breaker
order_by = if params[:order_by] == 'created_at'
'id'
else
params[:order_by]
end
order_options = { order_by => params[:sort] }
order_options['id'] ||= params[:sort] || 'asc'
order_options
end
# error helpers
def forbidden!(reason = nil)
render_api_error_with_reason!(403, '403 Forbidden', reason)
end
def bad_request!(reason = nil)
render_api_error_with_reason!(400, '400 Bad request', reason)
end
def bad_request_missing_attribute!(attribute)
bad_request!("\"#{attribute}\" not given")
end
def not_found!(resource = nil)
message = ["404"]
message << resource if resource
message << "Not Found"
render_api_error!(message.join(' '), 404)
end
def check_sha_param!(params, merge_request)
if params[:sha] && merge_request.diff_head_sha != params[:sha]
render_api_error!("SHA does not match HEAD of source branch: #{merge_request.diff_head_sha}", 409)
end
end
def unauthorized!(reason = nil)
render_api_error_with_reason!(401, '401 Unauthorized', reason)
end
def not_allowed!(message = nil)
render_api_error!(message || '405 Method Not Allowed', :method_not_allowed)
end
def not_acceptable!
render_api_error!('406 Not Acceptable', 406)
end
def service_unavailable!(message = nil)
render_api_error!(message || '503 Service Unavailable', 503)
end
def conflict!(message = nil)
render_api_error!(message || '409 Conflict', 409)
end
def unprocessable_entity!(message = nil)
render_api_error!(message || '422 Unprocessable Entity', :unprocessable_entity)
end
def file_too_large!
render_api_error!('413 Request Entity Too Large', 413)
end
def not_modified!
render_api_error!('304 Not Modified', 304)
end
def no_content!
render_api_error!('204 No Content', 204)
end
def created!
render_api_error!('201 Created', 201)
end
def accepted!
render_api_error!('202 Accepted', 202)
end
def render_validation_error!(model, status = 400)
if model.errors.any?
render_api_error!(model_error_messages(model) || '400 Bad Request', status)
end
end
def model_error_messages(model)
model.errors.messages
end
def render_api_error_with_reason!(status, message, reason)
message = [message]
message << "- #{reason}" if reason
render_api_error!(message.join(' '), status)
end
def render_api_error!(message, status)
render_structured_api_error!({ 'message' => message }, status)
end
def render_structured_api_error!(hash, status)
# Use this method instead of `render_api_error!` when you have additional top-level
# hash entries in addition to 'message' which need to be passed to `#error!`
set_status_code_in_env(status)
error!(hash, status, header)
end
def set_status_code_in_env(status)
# grape-logging doesn't pass the status code, so this is a
# workaround for getting that information in the loggers:
# https://github.com/aserafin/grape_logging/issues/71
env[API_RESPONSE_STATUS_CODE] = Rack::Utils.status_code(status)
end
def handle_api_exception(exception)
if report_exception?(exception)
define_params_for_grape_middleware
Gitlab::ApplicationContext.push(user: current_user, remote_ip: request.ip)
Gitlab::ErrorTracking.track_exception(exception)
end
# This is used with GrapeLogging::Loggers::ExceptionLogger
env[API_EXCEPTION_ENV] = exception
# lifted from https://github.com/rails/rails/blob/master/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb#L60
trace = exception.backtrace
message = ["\n#{exception.class} (#{exception.message}):\n"]
message << exception.annoted_source_code.to_s if exception.respond_to?(:annoted_source_code)
message << " " << trace.join("\n ")
message = message.join
API.logger.add Logger::FATAL, message
response_message =
if Rails.env.test?
message
else
'500 Internal Server Error'
end
rack_response({ 'message' => response_message }.to_json, 500)
end
# project helpers
# rubocop: disable CodeReuse/ActiveRecord
def reorder_projects(projects)
projects.reorder(order_options_with_tie_breaker)
end
# rubocop: enable CodeReuse/ActiveRecord
def project_finder_params
project_finder_params_ce.merge(project_finder_params_ee)
end
# file helpers
def present_disk_file!(path, filename, content_type = 'application/octet-stream')
filename ||= File.basename(path)
header['Content-Disposition'] = ActionDispatch::Http::ContentDisposition.format(disposition: 'attachment', filename: filename)
header['Content-Transfer-Encoding'] = 'binary'
content_type content_type
# Support download acceleration
case headers['X-Sendfile-Type']
when 'X-Sendfile'
header['X-Sendfile'] = path
body '' # to avoid an error from API::APIGuard::ResponseCoercerMiddleware
else
sendfile path
end
end
def present_artifacts_file!(file, project:, **args)
log_artifacts_filesize(file&.model)
present_carrierwave_file!(file, project: project, **args)
end
def present_carrierwave_file!(file, project: nil, supports_direct_download: true)
return not_found! unless file&.exists?
if file.file_storage?
present_disk_file!(file.path, file.filename)
elsif supports_direct_download && file.class.direct_download_enabled?
redirect(cdn_fronted_url(file, project))
else
header(*Gitlab::Workhorse.send_url(file.url))
status :ok
body '' # to avoid an error from API::APIGuard::ResponseCoercerMiddleware
end
end
def cdn_fronted_url(file, project)
if file.respond_to?(:cdn_enabled_url)
result = file.cdn_enabled_url(project, ip_address)
Gitlab::ApplicationContext.push(artifact_used_cdn: result.used_cdn)
result.url
else
file.url
end
end
def increment_counter(event_name)
Gitlab::UsageDataCounters.count(event_name)
rescue StandardError => error
Gitlab::AppLogger.warn("Redis tracking event failed for event: #{event_name}, message: #{error.message}")
end
# @param event_name [String] the event name
# @param values [Array|String] the values counted
def increment_unique_values(event_name, values)
return unless values.present?
Gitlab::UsageDataCounters::HLLRedisCounter.track_event(event_name, values: values)
rescue StandardError => error
Gitlab::AppLogger.warn("Redis tracking event failed for event: #{event_name}, message: #{error.message}")
end
def order_by_similarity?(allow_unauthorized: true)
params[:order_by] == 'similarity' && params[:search].present? && (allow_unauthorized || current_user.present?)
end
protected
def project_finder_params_visibility_ce
finder_params = {}
finder_params[:min_access_level] = params[:min_access_level] if params[:min_access_level]
finder_params[:visibility_level] = Gitlab::VisibilityLevel.level_value(params[:visibility]) if params[:visibility]
finder_params[:owned] = true if params[:owned].present?
finder_params[:non_public] = true if params[:membership].present?
finder_params[:starred] = true if params[:starred].present?
finder_params[:archived] = archived_param unless params[:archived].nil?
finder_params
end
def project_finder_params_ce
finder_params = project_finder_params_visibility_ce
finder_params.merge!(
params
.slice(:search,
:custom_attributes,
:last_activity_after,
:last_activity_before,
:topic,
:topic_id,
:repository_storage)
.symbolize_keys
.compact
)
finder_params[:with_issues_enabled] = true if params[:with_issues_enabled].present?
finder_params[:with_merge_requests_enabled] = true if params[:with_merge_requests_enabled].present?
finder_params[:without_deleted] = true
finder_params[:search_namespaces] = true if params[:search_namespaces].present?
finder_params[:user] = params.delete(:user) if params[:user]
finder_params[:id_after] = sanitize_id_param(params[:id_after]) if params[:id_after]
finder_params[:id_before] = sanitize_id_param(params[:id_before]) if params[:id_before]
finder_params
end
# Overridden in EE
def project_finder_params_ee
{}
end
def validate_anonymous_search_access!
return if current_user.present? || Feature.disabled?(:disable_anonymous_search, type: :ops)
unprocessable_entity!('User must be authenticated to use search')
end
private
# rubocop:disable Gitlab/ModuleWithInstanceVariables
def initial_current_user
return @initial_current_user if defined?(@initial_current_user)
begin
@initial_current_user = Gitlab::Auth::UniqueIpsLimiter.limit_user! { find_current_user! }
rescue Gitlab::Auth::UnauthorizedError
unauthorized!
end
end
# rubocop:enable Gitlab/ModuleWithInstanceVariables
def sudo!
return unless sudo_identifier
unauthorized! unless initial_current_user
unless initial_current_user.admin?
forbidden!('Must be admin to use sudo')
end
unless access_token
forbidden!('Must be authenticated using an OAuth or Personal Access Token to use sudo')
end
validate_access_token!(scopes: [:sudo])
sudoed_user = find_user(sudo_identifier)
not_found!("User with ID or username '#{sudo_identifier}'") unless sudoed_user
@current_user = sudoed_user # rubocop:disable Gitlab/ModuleWithInstanceVariables
end
def sudo_identifier
@sudo_identifier ||= params[SUDO_PARAM] || env[SUDO_HEADER]
end
def secret_token
Gitlab::Shell.secret_token
end
def authenticate_non_public?
route_authentication_setting[:authenticate_non_public] && !current_user
end
def send_git_blob(repository, blob)
env['api.format'] = :txt
content_type 'text/plain'
header['Content-Disposition'] = ActionDispatch::Http::ContentDisposition.format(disposition: 'inline', filename: blob.name)
# Let Workhorse examine the content and determine the better content disposition
header[Gitlab::Workhorse::DETECT_HEADER] = "true"
header(*Gitlab::Workhorse.send_git_blob(repository, blob))
body ''
end
def send_git_archive(repository, **kwargs)
header(*Gitlab::Workhorse.send_git_archive(repository, **kwargs))
body ''
end
# Deprecated. Use `send_artifacts_entry` instead.
def legacy_send_artifacts_entry(file, entry)
header(*Gitlab::Workhorse.send_artifacts_entry(file, entry))
body ''
end
def send_artifacts_entry(file, entry)
header(*Gitlab::Workhorse.send_artifacts_entry(file, entry))
header(*Gitlab::Workhorse.detect_content_type)
body ''
end
# The Grape Error Middleware only has access to `env` but not `params` nor
# `request`. We workaround this by defining methods that returns the right
# values.
def define_params_for_grape_middleware
self.define_singleton_method(:request) { ActionDispatch::Request.new(env) }
self.define_singleton_method(:params) { request.params.symbolize_keys }
end
# We could get a Grape or a standard Ruby exception. We should only report anything that
# is clearly an error.
def report_exception?(exception)
return true unless exception.respond_to?(:status)
exception.status == 500
end
def archived_param
return 'only' if params[:archived]
params[:archived]
end
def ip_address
env["action_dispatch.remote_ip"].to_s || request.ip
end
def sanitize_id_param(id)
id.present? ? id.to_i : nil
end
end
end
API::Helpers.prepend_mod_with('API::Helpers')