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