84 lines
3.5 KiB
Ruby
84 lines
3.5 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 User Refresh credentials.
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#
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# This class allows authorizing requests from user refresh tokens.
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#
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# This the end of the result of a 3LO flow. E.g, the end result of
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# 'gcloud auth login' saves a file with these contents in well known
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# location
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#
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# cf [Application Default Credentials](http://goo.gl/mkAHpZ)
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class UserRefreshCredentials < Signet::OAuth2::Client
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TOKEN_CRED_URI = 'https://www.googleapis.com/oauth2/v3/token'
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extend CredentialsLoader
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# Reads the client_id, client_secret and refresh_token fields from the
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# JSON key.
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def self.read_json_key(json_key_io)
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json_key = MultiJson.load(json_key_io.read)
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wanted = %w(client_id client_secret refresh_token)
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wanted.each do |key|
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fail "the json is missing the #{key} field" unless json_key.key?(key)
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end
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json_key
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end
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# Initializes a UserRefreshCredentials.
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#
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# @param json_key_io [IO] an IO from which the JSON key can be read
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# @param scope [string|array|nil] the scope(s) to access
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def initialize(options = {})
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json_key_io, scope = options.values_at(:json_key_io, :scope)
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user_creds = self.class.read_json_key(json_key_io) if json_key_io
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user_creds ||= {
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client_id: ENV[CredentialsLoader::CLIENT_ID_VAR],
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client_secret: ENV[CredentialsLoader::CLIENT_SECRET_VAR],
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refresh_token: ENV[CredentialsLoader::REFRESH_TOKEN_VAR]
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}
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super(token_credential_uri: TOKEN_CRED_URI,
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client_id: user_creds['client_id'],
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client_secret: user_creds['client_secret'],
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refresh_token: user_creds['refresh_token'],
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scope: scope)
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end
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end
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end
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end
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