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FirebaseAuth Framework Reference

FIRUser


@interface FIRUser : NSObject <FIRUserInfo>

Represents a user. Firebase Auth does not attempt to validate users when loading them from the keychain. Invalidated users (such as those whose passwords have been changed on another client) are automatically logged out when an auth-dependent operation is attempted or when the ID token is automatically refreshed. This class is thread-safe.

  • Indicates the user represents an anonymous user.

    Declaration

    Objective-C

    @property (nonatomic, readonly, getter=isAnonymous) BOOL anonymous;

  • Indicates the email address associated with this user has been verified.

    Declaration

    Objective-C

    @property (nonatomic, readonly, getter=isEmailVerified) BOOL emailVerified;

  • A refresh token; useful for obtaining new access tokens independently. This property should only be used for advanced scenarios, and is not typically needed.

    Declaration

    Objective-C

    @property (nonatomic, readonly, nullable) NSString *refreshToken;

  • Profile data for each identity provider, if any. This data is cached on sign-in and updated when linking or unlinking.

    Declaration

    Objective-C

    @property (nonatomic, readonly, nonnull) NSArray<id<FIRUserInfo>> *providerData;

  • Metadata associated with the Firebase user in question.

    Declaration

    Objective-C

    @property (nonatomic, readonly, nonnull) FIRUserMetadata *metadata;

  • The tenant ID of the current user. nil if none is available.

    Declaration

    Objective-C

    @property (nonatomic, readonly, nullable) NSString *tenantID;

  • Multi factor object associated with the user. This property is available on iOS only.

    Declaration

    Objective-C

    @property (nonatomic, readonly, nonnull) FIRMultiFactor *multiFactor;

  • This class should not be instantiated. To retrieve the current user, use Auth.currentUser. To sign a user in or out, use the methods on Auth.

    Declaration

    Objective-C

    - (nonnull instancetype)init;

  • [Deprecated] Updates the email address for the user. On success, the cached user profile data is updated. Throws FIRAuthErrorCodeInvalidCredentials error when Email Enumeration Protection is enabled. May fail if there is already an account with this email address that was created using email and password authentication.

    Possible error codes:

     + `AuthErrorCodeInvalidRecipientEmail` - Indicates an invalid recipient email was
     sent in the request.
 + `AuthErrorCodeInvalidSender` - Indicates an invalid sender email is set in
     the console for this action.
 + `AuthErrorCodeInvalidMessagePayload` - Indicates an invalid email template for
     sending update email.
 + `AuthErrorCodeEmailAlreadyInUse` - Indicates the email is already in use by another
     account.
 + `AuthErrorCodeInvalidEmail` - Indicates the email address is malformed.
 + `AuthErrorCodeRequiresRecentLogin` - Updating a user’s email is a security
     sensitive operation that requires a recent login from the user. This error indicates
     the user has not signed in recently enough. To resolve, reauthenticate the user by
     calling `reauthenticate(with:)`.

    See AuthErrors for a list of error codes that are common to all User methods.

    Declaration

    Objective-C

    - (void)updateEmail:(nonnull NSString *)email
         completion:(nullable void (^)(NSError *_Nullable))completion;

    Parameters

    email

    The email address for the user.
    completion

    Optionally; the block invoked when the user profile change has finished. Invoked asynchronously on the main thread in the future.

  • Updates the password for the user. On success, the cached user profile data is updated.

    Possible error codes:

    + `AuthErrorCodeOperationNotAllowed` - Indicates the administrator disabled
    sign in with the specified identity provider.
+ `AuthErrorCodeRequiresRecentLogin` - Updating a user’s password is a security
    sensitive operation that requires a recent login from the user. This error indicates
    the user has not signed in recently enough. To resolve, reauthenticate the user by
    calling `reauthenticate(with:)`.
+ `AuthErrorCodeWeakPassword` - Indicates an attempt to set a password that is
    considered too weak. The `NSLocalizedFailureReasonErrorKey` field in the `userInfo`
    dictionary object will contain more detailed explanation that can be shown to the user.

    See AuthErrors for a list of error codes that are common to all User methods.

    Declaration

    Objective-C

    - (void)updatePassword:(nonnull NSString *)password
            completion:(nullable void (^)(NSError *_Nullable))completion;

    Parameters

    password

    The new password for the user.
    completion

    Optionally; the block invoked when the user profile change has finished. Invoked asynchronously on the main thread in the future.

  • Updates the phone number for the user. On success, the cached user profile data is updated. This method is available on iOS only.

    Possible error codes:

    + `AuthErrorCodeRequiresRecentLogin` - Updating a user’s phone number is a security
    sensitive operation that requires a recent login from the user. This error indicates
    the user has not signed in recently enough. To resolve, reauthenticate the user by
    calling `reauthenticate(with:)`.

    See AuthErrors for a list of error codes that are common to all User methods.

    Declaration

    Objective-C

    - (void)updatePhoneNumberCredential:
            (nonnull FIRPhoneAuthCredential *)phoneNumberCredential
                         completion:
                             (nullable void (^)(NSError *_Nullable))completion;

    Parameters

    phoneNumberCredential

    The new phone number credential corresponding to the phone number to be added to the Firebase account, if a phone number is already linked to the account this new phone number will replace it.
    completion

    Optionally; the block invoked when the user profile change has finished. Invoked asynchronously on the main thread in the future.

  • Creates an object which may be used to change the user’s profile data.

    Set the properties of the returned object, then call UserProfileChangeRequest.commitChanges() to perform the updates atomically.

    Declaration

    Objective-C

    - (nonnull FIRUserProfileChangeRequest *)profileChangeRequest;

    Return Value

    An object which may be used to change the user’s profile data atomically.

  • Reloads the user’s profile data from the server.

    May fail with a AuthErrorCodeRequiresRecentLogin error code. In this case you should call reauthenticate(with:) before re-invoking updateEmail(to:).

    See AuthErrors for a list of error codes that are common to all API methods.

    Declaration

    Objective-C

    - (void)reloadWithCompletion:(nullable void (^)(NSError *_Nullable))completion;

    Parameters

    completion

    Optionally; the block invoked when the reload has finished. Invoked asynchronously on the main thread in the future.

  • Renews the user’s authentication tokens by validating a fresh set of credentials supplied by the user and returns additional identity provider data.

    If the user associated with the supplied credential is different from the current user, or if the validation of the supplied credentials fails; an error is returned and the current user remains signed in.

    Possible error codes:

    + `AuthErrorCodeInvalidCredential` - Indicates the supplied credential is invalid.
    This could happen if it has expired or it is malformed.
+ `AuthErrorCodeOperationNotAllowed` - Indicates that accounts with the
    identity provider represented by the credential are not enabled. Enable them in the
    Auth section of the Firebase console.
+ `AuthErrorCodeEmailAlreadyInUse` -  Indicates the email asserted by the credential
    (e.g. the email in a Facebook access token) is already in use by an existing account,
    that cannot be authenticated with this method. This error will only be thrown if the
  "One account per email address" setting is enabled in the Firebase console, under Auth
  settings. Please note that the error code raised in this specific situation may not be
  the same on Web and Android.
+ `AuthErrorCodeUserDisabled` - Indicates the user's account is disabled.
+ `AuthErrorCodeWrongPassword` - Indicates the user attempted reauthentication with
    an incorrect password, if credential is of the type `EmailPasswordAuthCredential`.
+ `AuthErrorCodeUserMismatch` -  Indicates that an attempt was made to
    reauthenticate with a user which is not the current user.
+ `AuthErrorCodeInvalidEmail` - Indicates the email address is malformed.

    See FIRAuthErrors for a list of error codes that are common to all API methods.

    Declaration

    Objective-C

    - (void)reauthenticateWithCredential:(nonnull FIRAuthCredential *)credential
                          completion:
                              (nullable void (^)(FIRAuthDataResult *_Nullable,
                                                 NSError *_Nullable))completion;

    Parameters

    credential

    A user-supplied credential, which will be validated by the server. This can be a successful third-party identity provider sign-in, or an email address and password.
    completion

    Optionally; the block invoked when the re-authentication operation has finished. Invoked asynchronously on the main thread in the future.

  • Renews the user’s authentication using the provided auth provider instance. This method is available on iOS, macOS Catalyst, and tvOS only.

    Declaration

    Objective-C

    - (void)reauthenticateWithProvider:
            (nonnull id<FIRFederatedAuthProvider>)provider
                        UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
                        completion:
                            (nullable void (^)(FIRAuthDataResult *_Nullable,
                                               NSError *_Nullable))completion;

    Parameters

    provider

    An instance of an auth provider used to initiate the reauthenticate flow.
    UIDelegate

    Optionally an instance of a class conforming to the AuthUIDelegate protocol, used for presenting the web context. If nil, a default AuthUIDelegate will be used.
    completion

    Optionally; a block which is invoked when the reauthenticate flow finishes, or is canceled. Invoked asynchronously on the main thread in the future.

  • Retrieves the Firebase authentication token, possibly refreshing it if it has expired.

    See AuthErrors for a list of error codes that are common to all API methods.

    Declaration

    Objective-C

    - (void)getIDTokenResultWithCompletion:
    (nullable void (^)(FIRAuthTokenResult *_Nullable,
                       NSError *_Nullable))completion;

    Parameters

    completion

    Optionally; the block invoked when the token is available. Invoked asynchronously on the main thread in the future.

  • Retrieves the Firebase authentication token, possibly refreshing it if it has expired.

    The authentication token will be refreshed (by making a network request) if it has expired, or if forceRefresh is YES.

    See AuthErrors for a list of error codes that are common to all API methods.

    Declaration

    Objective-C

    - (void)getIDTokenResultForcingRefresh:(BOOL)forceRefresh
                            completion:(nullable void (^)(
                                           FIRAuthTokenResult *_Nullable,
                                           NSError *_Nullable))completion;

    Parameters

    forceRefresh

    Forces a token refresh. Useful if the token becomes invalid for some reason other than an expiration.
    completion

    Optionally; the block invoked when the token is available. Invoked asynchronously on the main thread in the future.

  • Retrieves the Firebase authentication token, possibly refreshing it if it has expired.

    See AuthErrors for a list of error codes that are common to all API methods.

    Declaration

    Objective-C

    - (void)getIDTokenWithCompletion:
    (nullable void (^)(NSString *_Nullable, NSError *_Nullable))completion;

    Parameters

    completion

    Optionally; the block invoked when the token is available. Invoked asynchronously on the main thread in the future.

  • Retrieves the Firebase authentication token, possibly refreshing it if it has expired.

    The authentication token will be refreshed (by making a network request) if it has expired, or if forceRefresh is true.

    See AuthErrors for a list of error codes that are common to all API methods.

    Declaration

    Objective-C

    - (void)getIDTokenForcingRefresh:(BOOL)forceRefresh
                      completion:
                          (nullable void (^)(NSString *_Nullable,
                                             NSError *_Nullable))completion;

    Parameters

    forceRefresh

    Forces a token refresh. Useful if the token becomes invalid for some reason other than an expiration.
    completion

    Optionally; the block invoked when the token is available. Invoked asynchronously on the main thread in the future.

  • Associates a user account from a third-party identity provider with this user and returns additional identity provider data.

    Possible error codes:

    + `AuthErrorCodeProviderAlreadyLinked` - Indicates an attempt to link a provider of a
    type already linked to this account.
+ `AuthErrorCodeCredentialAlreadyInUse` - Indicates an attempt to link with a
    credential that has already been linked with a different Firebase account.
+ `AuthErrorCodeOperationNotAllowed` - Indicates that accounts with the identity
    provider represented by the credential are not enabled. Enable them in the Auth section
    of the Firebase console.

    This method may also return error codes associated with updateEmail(to:) and updatePassword(to:) on User.

    See AuthErrors for a list of error codes that are common to all User methods.

    Declaration

    Objective-C

    - (void)linkWithCredential:(nonnull FIRAuthCredential *)credential
                completion:(nullable void (^)(FIRAuthDataResult *_Nullable,
                                              NSError *_Nullable))completion;

    Parameters

    credential

    The credential for the identity provider.
    completion

    Optionally; the block invoked when the unlinking is complete, or fails. Invoked asynchronously on the main thread in the future.

  • link the user with the provided auth provider instance. This method is available on iOS, macOS Catalyst, and tvOS only.

    Declaration

    Objective-C

    - (void)linkWithProvider:(nonnull id<FIRFederatedAuthProvider>)provider
              UIDelegate:(nullable id<FIRAuthUIDelegate>)UIDelegate
              completion:(nullable void (^)(FIRAuthDataResult *_Nullable,
                                            NSError *_Nullable))completion;

    Parameters

    provider

    An instance of an auth provider used to initiate the link flow.
    UIDelegate

    Optionally an instance of a class conforming to the AuthUIDelegate protocol used for presenting the web context. If nil, a default AuthUIDelegate will be used.
    completion

    Optionally; a block which is invoked when the link flow finishes, or is canceled. Invoked asynchronously on the main thread in the future.

  • Disassociates a user account from a third-party identity provider with this user.

    Possible error codes:

    + `AuthErrorCodeNoSuchProvider` - Indicates an attempt to unlink a provider
    that is not linked to the account.
+ `AuthErrorCodeRequiresRecentLogin` - Updating email is a security sensitive
    operation that requires a recent login from the user. This error indicates the user
    has not signed in recently enough. To resolve, reauthenticate the user by calling
    `reauthenticate(with:)`.

    See AuthErrors for a list of error codes that are common to all User methods.

    Declaration

    Objective-C

    - (void)unlinkFromProvider:(nonnull NSString *)provider
                completion:(nullable void (^)(FIRUser *_Nullable,
                                              NSError *_Nullable))completion;

    Parameters

    provider

    The provider ID of the provider to unlink.
    completion

    Optionally; the block invoked when the unlinking is complete, or fails. Invoked asynchronously on the main thread in the future.

  • Initiates email verification for the user.

    Possible error codes:

    + `AuthErrorCodeInvalidRecipientEmail` - Indicates an invalid recipient email was
    sent in the request.
+ `AuthErrorCodeInvalidSender` - Indicates an invalid sender email is set in
    the console for this action.
+ `AuthErrorCodeInvalidMessagePayload` - Indicates an invalid email template for
    sending update email.
+ `AuthErrorCodeUserNotFound` - Indicates the user account was not found.

    See AuthErrors for a list of error codes that are common to all User methods.

    Declaration

    Objective-C

    - (void)sendEmailVerificationWithCompletion:
    (nullable void (^)(NSError *_Nullable))completion;

    Parameters

    completion

    Optionally; the block invoked when the request to send an email verification is complete, or fails. Invoked asynchronously on the main thread in the future.

  • Initiates email verification for the user.

    Possible error codes:

    + `AuthErrorCodeInvalidRecipientEmail` - Indicates an invalid recipient email was
    sent in the request.
+ `AuthErrorCodeInvalidSender` - Indicates an invalid sender email is set in
    the console for this action.
+ `AuthErrorCodeInvalidMessagePayload` - Indicates an invalid email template for
    sending update email.
+ `AuthErrorCodeUserNotFound` - Indicates the user account was not found.
+ `AuthErrorCodeMissingIosBundleID` - Indicates that the iOS bundle ID is missing when
    a iOS App Store ID is provided.
+ `AuthErrorCodeMissingAndroidPackageName` - Indicates that the android package name
    is missing when the `androidInstallApp` flag is set to true.
+ `AuthErrorCodeUnauthorizedDomain` - Indicates that the domain specified in the
    continue URL is not allowlisted in the Firebase console.
+ `AuthErrorCodeInvalidContinueURI` - Indicates that the domain specified in the
    continue URL is not valid.

    Declaration

    Objective-C

    - (void)sendEmailVerificationWithActionCodeSettings:
            (nonnull FIRActionCodeSettings *)actionCodeSettings
                                         completion:
                                             (nullable void (^)(
                                                 NSError *_Nullable))completion;

    Parameters

    actionCodeSettings

    An ActionCodeSettings object containing settings related to handling action codes.

  • Deletes the user account (also signs out the user, if this was the current user).

    Possible error codes:

    + `AuthErrorCodeRequiresRecentLogin` - Updating email is a security sensitive
    operation that requires a recent login from the user. This error indicates the user
    has not signed in recently enough. To resolve, reauthenticate the user by calling
    `reauthenticate(with:)`.

    See AuthErrors for a list of error codes that are common to all User methods.

    Declaration

    Objective-C

    - (void)deleteWithCompletion:(nullable void (^)(NSError *_Nullable))completion;

    Parameters

    completion

    Optionally; the block invoked when the request to delete the account is complete, or fails. Invoked asynchronously on the main thread in the future.

  • Send an email to verify the ownership of the account then update to the new email.

    Declaration

    Objective-C

    - (void)sendEmailVerificationBeforeUpdatingEmail:(nonnull NSString *)email
                                      completion:
                                          (nullable void (^)(
                                              NSError *_Nullable))completion;

    Parameters

    email

    The email to be updated to.
    completion

    Optionally; the block invoked when the request to send the verification email is complete, or fails.

  • Send an email to verify the ownership of the account then update to the new email.

    Declaration

    Objective-C

    - (void)
    sendEmailVerificationBeforeUpdatingEmail:(nonnull NSString *)email
                          actionCodeSettings:(nonnull FIRActionCodeSettings *)
                                                 actionCodeSettings
                                  completion:(nullable void (^)(
                                                 NSError *_Nullable))completion;

    Parameters

    email

    The email to be updated to.
    actionCodeSettings

    An ActionCodeSettings object containing settings related to handling action codes.
    completion

    Optionally; the block invoked when the request to send the verification email is complete, or fails.