Class: Google::Auth::UserRefreshCredentials

Inherits:
Signet::OAuth2::Client show all
Extended by:
CredentialsLoader
Defined in:
lib/googleauth/user_refresh.rb

Overview

Authenticates requests using User Refresh credentials.

This class allows authorizing requests from user refresh tokens.

This the end of the result of a 3LO flow. E.g, the end result of 'gcloud auth login' saves a file with these contents in well known location

cf [Application Default Credentials](cloud.google.com/docs/authentication/production)

Constant Summary collapse

TOKEN_CRED_URI =
"https://oauth2.googleapis.com/token".freeze
AUTHORIZATION_URI =
"https://accounts.google.com/o/oauth2/auth".freeze
REVOKE_TOKEN_URI =
"https://oauth2.googleapis.com/revoke".freeze

Constants included from CredentialsLoader

CredentialsLoader::ACCOUNT_TYPE_VAR, CredentialsLoader::CLIENT_EMAIL_VAR, CredentialsLoader::CLIENT_ID_VAR, CredentialsLoader::CLIENT_SECRET_VAR, CredentialsLoader::CLOUD_SDK_CLIENT_ID, CredentialsLoader::CLOUD_SDK_CREDENTIALS_WARNING, CredentialsLoader::CREDENTIALS_FILE_NAME, CredentialsLoader::ENV_VAR, CredentialsLoader::GCLOUD_CONFIG_COMMAND, CredentialsLoader::GCLOUD_POSIX_COMMAND, CredentialsLoader::GCLOUD_WINDOWS_COMMAND, CredentialsLoader::NOT_FOUND_ERROR, CredentialsLoader::PRIVATE_KEY_VAR, CredentialsLoader::PROJECT_ID_VAR, CredentialsLoader::REFRESH_TOKEN_VAR, CredentialsLoader::SYSTEM_DEFAULT_ERROR, CredentialsLoader::WELL_KNOWN_ERROR, CredentialsLoader::WELL_KNOWN_PATH

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from CredentialsLoader

from_env, from_system_default_path, from_well_known_path, load_gcloud_project_id, make_creds, warn_if_cloud_sdk_credentials

Methods inherited from Signet::OAuth2::Client

#apply, #apply!, #build_default_connection, #configure_connection, #fetch_access_token!, #notify_refresh_listeners, #on_refresh, #orig_fetch_access_token!, #retry_with_error, #updater_proc

Constructor Details

#initialize(options = {}) ⇒ UserRefreshCredentials

Returns a new instance of UserRefreshCredentials.


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# File 'lib/googleauth/user_refresh.rb', line 89

def initialize options = {}
  options ||= {}
  options[:token_credential_uri] ||= TOKEN_CRED_URI
  options[:authorization_uri] ||= AUTHORIZATION_URI
  @project_id = options[:project_id]
  @project_id ||= CredentialsLoader.load_gcloud_project_id
  super options
end

Instance Attribute Details

#project_idObject (readonly)

Returns the value of attribute project_id


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# File 'lib/googleauth/user_refresh.rb', line 53

def project_id
  @project_id
end

Class Method Details

.make_creds(options = {}) ⇒ Object

Create a UserRefreshCredentials.

Parameters:

  • json_key_io (IO)

    an IO from which the JSON key can be read

  • scope (string|array|nil)

    the scope(s) to access


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# File 'lib/googleauth/user_refresh.rb', line 59

def self.make_creds options = {}
  json_key_io, scope = options.values_at :json_key_io, :scope
  user_creds = read_json_key json_key_io if json_key_io
  user_creds ||= {
    "client_id"     => ENV[CredentialsLoader::CLIENT_ID_VAR],
    "client_secret" => ENV[CredentialsLoader::CLIENT_SECRET_VAR],
    "refresh_token" => ENV[CredentialsLoader::REFRESH_TOKEN_VAR],
    "project_id"    => ENV[CredentialsLoader::PROJECT_ID_VAR]
  }

  new(token_credential_uri: TOKEN_CRED_URI,
      client_id:            user_creds["client_id"],
      client_secret:        user_creds["client_secret"],
      refresh_token:        user_creds["refresh_token"],
      project_id:           user_creds["project_id"],
      scope:                scope)
    .configure_connection(options)
end

.read_json_key(json_key_io) ⇒ Object

Reads the client_id, client_secret and refresh_token fields from the JSON key.


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# File 'lib/googleauth/user_refresh.rb', line 80

def self.read_json_key json_key_io
  json_key = MultiJson.load json_key_io.read
  wanted = ["client_id", "client_secret", "refresh_token"]
  wanted.each do |key|
    raise "the json is missing the #{key} field" unless json_key.key? key
  end
  json_key
end

Instance Method Details

#includes_scope?(required_scope) ⇒ Boolean

Verifies that a credential grants the requested scope

Parameters:

  • required_scope (Array<String>, String)

    Scope to verify

Returns:

  • (Boolean)

    True if scope is granted


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# File 'lib/googleauth/user_refresh.rb', line 122

def includes_scope? required_scope
  missing_scope = Google::Auth::ScopeUtil.normalize(required_scope) -
                  Google::Auth::ScopeUtil.normalize(scope)
  missing_scope.empty?
end

#revoke!(options = {}) ⇒ Object

Revokes the credential


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# File 'lib/googleauth/user_refresh.rb', line 99

def revoke! options = {}
  c = options[:connection] || Faraday.default_connection

  retry_with_error do
    resp = c.post(REVOKE_TOKEN_URI, token: refresh_token || access_token)
    case resp.status
    when 200
      self.access_token = nil
      self.refresh_token = nil
      self.expires_at = 0
    else
      raise(Signet::AuthorizationError,
            "Unexpected error code #{resp.status}")
    end
  end
end