google-auth-library-ruby/lib/googleauth/iam.rb

76 lines
2.7 KiB
Ruby

# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
require 'googleauth/signet'
require 'googleauth/credentials_loader'
require 'multi_json'
module Google
# Module Auth provides classes that provide Google-specific authorization
# used to access Google APIs.
module Auth
# Authenticates requests using IAM credentials.
class IAMCredentials
SELECTOR_KEY = 'x-goog-iam-authority-selector'
TOKEN_KEY = 'x-goog-iam-authorization-token'
# Initializes an IAMCredentials.
#
# @param selector the IAM selector.
# @param token the IAM token.
def initialize(selector, token)
fail TypeError unless selector.is_a? String
fail TypeError unless token.is_a? String
@selector = selector
@token = token
end
# Adds the credential fields to the hash.
def apply!(a_hash)
a_hash[SELECTOR_KEY] = @selector
a_hash[TOKEN_KEY] = @token
a_hash
end
# Returns a clone of a_hash updated with the authoriation header
def apply(a_hash)
a_copy = a_hash.clone
apply!(a_copy)
a_copy
end
# Returns a reference to the #apply method, suitable for passing as
# a closure
def updater_proc
lambda(&method(:apply))
end
end
end
end