Handles the MISSING_CLIENT_IDENTIFIER error thrown by the backend.

PiperOrigin-RevId: 257697440

Author: Googler

auth/src/android/common_android.cc

@@ -99,6 +99,7 @@ static const ErrorCodeMapping kFirebaseAuthCodes[] = {
     {"ERROR_INVALID_TENANT_ID", kAuthErrorInvalidTenantId},
     {"ERROR_INVALID_DYNAMIC_LINK_DOMAIN", kAuthErrorInvalidLinkDomain},
     {"ERROR_TENANT_ID_MISMATCH", kAuthErrorTenantIdMismatch},
+    {"ERROR_MISSING_CLIENT_IDENTIFIER", kAuthErrorMissingClientIdentifier},
     {nullptr},
 };
 // NOTE: THIS IS WHERE IT GETS REALLY DODGY

auth/src/desktop/rpcs/error_codes.cc

@@ -65,6 +65,7 @@ static const BackendErrorToCode kBackendErrorsToErrorCodeMap[] = {
     {"QUOTA_EXCEEDED", kAuthErrorQuotaExceeded},
     {"SESSION_EXPIRED", kAuthErrorSessionExpired},
     {"INVALID_APP_CREDENTIAL", kAuthErrorAppNotAuthorized},
+    {"MISSING_CLIENT_IDENTIFIER", kAuthErrorMissingClientIdentifier},
 };
 
 static const struct ErrorCodeToDescription {
@@ -171,7 +172,8 @@ static const struct ErrorCodeToDescription {
      "The requested provider ID is invalid. You must enable this provider in "
      "the console."},
     {kAuthErrorFailure, "An internal error has occurred."},
-};
+    {kAuthErrorMissingClientIdentifier,
+     "This request is missing a reCAPTCHA token."}};
 
 }  // namespace
 

auth/src/include/firebase/auth/types.h

@@ -344,6 +344,10 @@ enum AuthError {
   /// Indicates that a request was made to the backend with an invalid tenant
   /// ID.
   kAuthErrorInvalidTenantId,
+
+  /// Indicates that a request was made to the backend without a valid client
+  /// identifier.
+  kAuthErrorMissingClientIdentifier,
 };
 
 }  // namespace auth

auth/src/ios/auth_ios.mm

@@ -97,6 +97,9 @@ @implementation FIRCPPAuthListenerHandle
     {FIRAuthErrorCodeWebContextCancelled, kAuthErrorWebContextCancelled},
     {FIRAuthErrorCodeWrongPassword, kAuthErrorWrongPassword},
     {FIRAuthErrorCodeInvalidProviderID, kAuthErrorInvalidProviderId},
+    // TODO(b/137141080): Handle New Thick Client Error
+    // Uncomment once support for MISSING_CLIENT_IDENTIFIER is added to the iOS SDK.
+    // {FIRAuthErrorCodeMissingClientIdentifier, kAuthErrorMissingClientIdentifier},
 };
 
 template<typename T>