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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// A GoogleServiceAuthError is immutable, plain old data representing an
// error from an attempt to authenticate with a Google service.
// It could be from Google Accounts itself, or any service using Google
// Accounts (e.g expired credentials). It may contain additional data such as
// captcha or OTP challenges.
// A GoogleServiceAuthError without additional data is just a State, defined
// below. A case could be made to have this relation implicit, to allow raising
// error events concisely by doing OnAuthError(GoogleServiceAuthError::NONE),
// for example. But the truth is this class is ever so slightly more than a
// transparent wrapper around 'State' due to additional Captcha data
// (e.g consider operator=), and this would violate the style guide. Thus,
// you must explicitly use the constructor when all you have is a State.
// The good news is the implementation nests the enum inside a class, so you
// may forward declare and typedef GoogleServiceAuthError to something shorter
// in the comfort of your own translation unit.
#include <string>
#include "url/gurl.h"
namespace base {
class DictionaryValue;
class GoogleServiceAuthError {
// These enumerations are referenced by integer value in HTML login code and
// in UMA histograms. Do not change the numeric values.
enum State {
// The user is authenticated.
NONE = 0,
// The credentials supplied to GAIA were either invalid, or the locally
// cached credentials have expired.
// The GAIA user is not authorized to use the service.
// Could not connect to server to verify credentials. This could be in
// response to either failure to connect to GAIA or failure to connect to
// the service needing GAIA tokens during authentication.
// The user needs to satisfy a CAPTCHA challenge to unlock their account.
// If no other information is available, this can be resolved by visiting
// Otherwise, captcha()
// will provide details about the associated challenge.
// The user account has been deleted.
// The user account has been disabled.
// The service is not available; try again later.
// The password is valid but we need two factor to get a token.
// The requestor of the authentication step cancelled the request
// prior to completion.
// The user has provided a HOSTED account, when this service requires
// a GOOGLE account.
// Indicates the service responded to a request, but we cannot
// interpret the response.
// Indicates the service responded and response carried details of the
// application error.
// The number of known error states.
// Additional data for CAPTCHA_REQUIRED errors.
struct Captcha {
Captcha(const std::string& token,
const GURL& audio,
const GURL& img,
const GURL& unlock,
int width,
int height);
// For test only.
bool operator==(const Captcha &b) const;
std::string token; // Globally identifies the specific CAPTCHA challenge.
GURL audio_url; // The CAPTCHA audio to use instead of image.
GURL image_url; // The CAPTCHA image to show the user.
GURL unlock_url; // Pretty unlock page containing above captcha.
int image_width; // Width of captcha image.
int image_height; // Height of capture image.
// Additional data for TWO_FACTOR errors.
struct SecondFactor {
SecondFactor(const std::string& token,
const std::string& prompt,
const std::string& alternate,
int length);
// For test only.
bool operator==(const SecondFactor &b) const;
// Globally identifies the specific second-factor challenge.
std::string token;
// Localised prompt text, eg “Enter the verification code sent to your
// phone number ending in XXX”.
std::string prompt_text;
// Localized text describing an alternate option, eg “Get a verification
// code in a text message”.
std::string alternate_text;
// Character length for the challenge field.
int field_length;
// For test only.
bool operator==(const GoogleServiceAuthError &b) const;
// Construct a GoogleServiceAuthError from a State with no additional data.
explicit GoogleServiceAuthError(State s);
// Construct a GoogleServiceAuthError from a network error.
// It will be created with CONNECTION_FAILED set.
static GoogleServiceAuthError FromConnectionError(int error);
// Construct a CAPTCHA_REQUIRED error with CAPTCHA challenge data from the
// the ClientLogin endpoint.
// TODO(rogerta): once ClientLogin is no longer used, may be able to get
// rid of this function.
static GoogleServiceAuthError FromClientLoginCaptchaChallenge(
const std::string& captcha_token,
const GURL& captcha_image_url,
const GURL& captcha_unlock_url);
// Construct a SERVICE_ERROR error, e.g. invalid client ID, with an
// |error_message| which provides more information about the service error.
static GoogleServiceAuthError FromServiceError(
const std::string& error_message);
// Construct an UNEXPECTED_SERVICE_RESPONSE error, with an |error_message|
// detailing the problems with the response.
static GoogleServiceAuthError FromUnexpectedServiceResponse(
const std::string& error_message);
// Provided for convenience for clients needing to reset an instance to NONE.
// (avoids err_ = GoogleServiceAuthError(GoogleServiceAuthError::NONE), due
// to explicit class and State enum relation. Note: shouldn't be inlined!
static GoogleServiceAuthError AuthErrorNone();
// The error information.
State state() const;
const Captcha& captcha() const;
const SecondFactor& second_factor() const;
int network_error() const;
const std::string& token() const;
const std::string& error_message() const;
// Returns info about this object in a dictionary. Caller takes
// ownership of returned dictionary.
base::DictionaryValue* ToValue() const;
// Returns a message describing the error.
std::string ToString() const;
GoogleServiceAuthError(State s, int error);
// Construct a GoogleServiceAuthError from |state| and |error_message|.
GoogleServiceAuthError(State state, const std::string& error_message);
explicit GoogleServiceAuthError(const std::string& error_message);
GoogleServiceAuthError(State s, const std::string& captcha_token,
const GURL& captcha_audio_url,
const GURL& captcha_image_url,
const GURL& captcha_unlock_url,
int image_width,
int image_height);
GoogleServiceAuthError(State s, const std::string& captcha_token,
const std::string& prompt_text,
const std::string& alternate_text,
int field_length);
State state_;
Captcha captcha_;
SecondFactor second_factor_;
int network_error_;
std::string error_message_;