gitlabhq/lib/gitlab/backend/grack_auth.rb

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require_relative 'shell_env'
module Grack
class Auth < Rack::Auth::Basic
attr_accessor :user, :project
def call(env)
@env = env
@request = Rack::Request.new(env)
@auth = Request.new(env)
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# Need this patch due to the rails mount
@env['PATH_INFO'] = @request.path
@env['SCRIPT_NAME'] = ""
return render_not_found unless project
return unauthorized unless project.public || @auth.provided?
return bad_request if @auth.provided? && !@auth.basic?
if valid?
if @auth.provided?
@env['REMOTE_USER'] = @auth.username
end
return @app.call(env)
else
unauthorized
end
end
def valid?
if @auth.provided?
# Authentication with username and password
login, password = @auth.credentials
self.user = User.find_by_email(login) || User.find_by_username(login)
return false unless user.try(:valid_password?, password)
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Gitlab::ShellEnv.set_env(user)
end
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# Git upload and receive
if @request.get?
validate_get_request
elsif @request.post?
validate_post_request
else
false
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end
end
def validate_get_request
project.public || can?(user, :download_code, project)
end
def validate_post_request
if @request.path_info.end_with?('git-upload-pack')
project.public || can?(user, :download_code, project)
elsif @request.path_info.end_with?('git-receive-pack')
action = if project.protected_branch?(current_ref)
:push_code_to_protected_branches
else
:push_code
end
can?(user, action, project)
else
false
end
end
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def can?(object, action, subject)
abilities.allowed?(object, action, subject)
end
def current_ref
if @env["HTTP_CONTENT_ENCODING"] =~ /gzip/
input = Zlib::GzipReader.new(@request.body).read
else
input = @request.body.read
end
# Need to reset seek point
@request.body.rewind
/refs\/heads\/([\w\.-]+)/.match(input).to_a.last
end
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def project
unless instance_variable_defined? :@project
# Find project by PATH_INFO from env
if m = /^\/([\w\.\/-]+)\.git/.match(@request.path_info).to_a
@project = Project.find_with_namespace(m.last)
end
end
return @project
end
PLAIN_TYPE = {"Content-Type" => "text/plain"}
def render_not_found
[404, PLAIN_TYPE, ["Not Found"]]
end
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protected
def abilities
@abilities ||= begin
abilities = Six.new
abilities << Ability
abilities
end
end
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end# Auth
end# Grack