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module API
module APIHelpers
PRIVATE_TOKEN_HEADER = "HTTP_PRIVATE_TOKEN"
PRIVATE_TOKEN_PARAM = :private_token
SUDO_HEADER ="HTTP_SUDO"
SUDO_PARAM = :sudo
def parse_boolean(value)
[ true, 1, '1', 't', 'T', 'true', 'TRUE', 'on', 'ON' ].include?(value)
end
def current_user
private_token = (params[PRIVATE_TOKEN_PARAM] || env[PRIVATE_TOKEN_HEADER]).to_s
@current_user ||= (User.find_by(authentication_token: private_token) || doorkeeper_guard)
unless @current_user && Gitlab::UserAccess.allowed?(@current_user)
return nil
end
identifier = sudo_identifier()
# If the sudo is the current user do nothing
if (identifier && !(@current_user.id == identifier || @current_user.username == identifier))
render_api_error!('403 Forbidden: Must be admin to use sudo', 403) unless @current_user.is_admin?
@current_user = User.by_username_or_id(identifier)
not_found!("No user id or username for: #{identifier}") if @current_user.nil?
end
@current_user
end
def sudo_identifier()
identifier ||= params[SUDO_PARAM] ||= env[SUDO_HEADER]
# Regex for integers
if (!!(identifier =~ /^[0-9]+$/))
identifier.to_i
else
identifier
end
end
def user_project
@project ||= find_project(params[:id])
@project || not_found!("Project")
end
def find_project(id)
project = Project.find_with_namespace(id) || Project.find_by(id: id)
if project && can?(current_user, :read_project, project)
project
else
nil
end
end
def find_group(id)
begin
group = Group.find(id)
rescue ActiveRecord::RecordNotFound
group = Group.find_by!(path: id)
end
if can?(current_user, :read_group, group)
group
else
forbidden!("#{current_user.username} lacks sufficient "\
"access to #{group.name}")
end
end
def paginate(relation)
per_page = params[:per_page].to_i
paginated = relation.page(params[:page]).per(per_page)
add_pagination_headers(paginated, per_page)
paginated
end
def authenticate!
unauthorized! unless current_user
end
def authenticate_by_gitlab_shell_token!
input = params['secret_token'].try(:chomp)
unless Devise.secure_compare(secret_token, input)
unauthorized!
end
end
def authenticated_as_admin!
forbidden! unless current_user.is_admin?
end
def authorize!(action, subject)
unless abilities.allowed?(current_user, action, subject)
forbidden!
end
end
def authorize_push_project
authorize! :push_code, user_project
end
def authorize_admin_project
authorize! :admin_project, user_project
end
def can?(object, action, subject)
abilities.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!(key) unless params[key].present?
end
end
def attributes_for_keys(keys)
attrs = {}
keys.each do |key|
if params[key].present? or (params.has_key?(key) and params[key] == false)
attrs[key] = params[key]
end
end
ActionController::Parameters.new(attrs).permit!
end
# Helper method for validating all labels against its names
def validate_label_params(params)
errors = {}
if params[:labels].present?
params[:labels].split(',').each do |label_name|
label = user_project.labels.create_with(
color: Label::DEFAULT_COLOR).find_or_initialize_by(
title: label_name.strip)
if label.invalid?
errors[label.title] = label.errors
end
end
end
errors
end
def validate_access_level?(level)
Gitlab::Access.options_with_owner.values.include? level.to_i
end
def issuable_order_by
if params["order_by"] == 'updated_at'
'updated_at'
else
'created_at'
end
end
def issuable_sort
if params["sort"] == 'asc'
:asc
else
:desc
end
end
# error helpers
def forbidden!(reason = nil)
message = ['403 Forbidden']
message << " - #{reason}" if reason
render_api_error!(message.join(' '), 403)
end
def bad_request!(attribute)
message = ["400 (Bad request)"]
message << "\"" + attribute.to_s + "\" not given"
render_api_error!(message.join(' '), 400)
end
def not_found!(resource = nil)
message = ["404"]
message << resource if resource
message << "Not Found"
render_api_error!(message.join(' '), 404)
end
def unauthorized!
render_api_error!('401 Unauthorized', 401)
end
def not_allowed!
render_api_error!('405 Method Not Allowed', 405)
end
def conflict!(message = nil)
render_api_error!(message || '409 Conflict', 409)
end
def render_validation_error!(model)
if model.errors.any?
render_api_error!(model.errors.messages || '400 Bad Request', 400)
end
end
def render_api_error!(message, status)
error!({ 'message' => message }, status)
end
private
def add_pagination_headers(paginated, per_page)
request_url = request.url.split('?').first
links = []
links << %(<#{request_url}?page=#{paginated.current_page - 1}&per_page=#{per_page}>; rel="prev") unless paginated.first_page?
links << %(<#{request_url}?page=#{paginated.current_page + 1}&per_page=#{per_page}>; rel="next") unless paginated.last_page?
links << %(<#{request_url}?page=1&per_page=#{per_page}>; rel="first")
links << %(<#{request_url}?page=#{paginated.total_pages}&per_page=#{per_page}>; rel="last")
header 'Link', links.join(', ')
end
def abilities
@abilities ||= begin
abilities = Six.new
abilities << Ability
abilities
end
end
def secret_token
File.read(Rails.root.join('.gitlab_shell_secret')).chomp
end
def handle_member_errors(errors)
error!(errors[:access_level], 422) if errors[:access_level].any?
not_found!(errors)
end
end
end
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