Add new error mapping for http error code 403 and 404

Author: Veena11

IdentityCore/src/MSIDError.h

@@ -171,6 +171,8 @@ typedef NS_ENUM(NSInteger, MSIDErrorCode)
      */
 
     MSIDErrorServerUnhandledResponse    = -51500,
+    // http status Code 403 or 404
+    MSIDErrorUnExpectedHttpResponse     = -51501,
 
     /*!
      =========================================================

IdentityCore/src/MSIDError.m

@@ -224,7 +224,8 @@ MSIDErrorCode MSIDErrorCodeForOAuthErrorWithSubErrorCode(NSString *oauthError, M
                       @(MSIDErrorServerError),
                       ],
               MSIDHttpErrorCodeDomain : @[
-                      @(MSIDErrorServerUnhandledResponse)
+                      @(MSIDErrorServerUnhandledResponse),
+                      @(MSIDErrorUnExpectedHttpResponse)
                       ]
 
               // TODO: add new codes here
@@ -301,6 +302,8 @@ void MSIDFillAndLogError(NSError **error, MSIDErrorCode errorCode, NSString *err
             // HTTP errors
         case MSIDErrorServerUnhandledResponse:
             return @"MSIDErrorServerUnhandledResponse";
+        case MSIDErrorUnExpectedHttpResponse:
+            return @"MSIDErrorUnExpectedHttpResponse";
             // Authority validation errors
         case MSIDErrorAuthorityValidation:
             return @"MSIDErrorAuthorityValidation";

IdentityCore/src/network/error_handler/MSIDAADRequestErrorHandler.m

@@ -150,7 +150,13 @@ - (void)handleError:(NSError *)error
         }
     }
 
-    NSError *httpError = MSIDCreateError(MSIDHttpErrorCodeDomain, MSIDErrorServerUnhandledResponse, errorDescription, nil, nil, nil, context.correlationId, additionalInfo, YES);
+    NSError *httpUnderlyingError = nil;
+    if (httpResponse.statusCode == 403 || httpResponse.statusCode == 404)
+    {
+        httpUnderlyingError = MSIDCreateError(MSIDHttpErrorCodeDomain, MSIDErrorUnExpectedHttpResponse, errorDescription, nil, nil, nil, context.correlationId, nil, YES);
+    }
+
+    NSError *httpError = MSIDCreateError(MSIDHttpErrorCodeDomain, MSIDErrorServerUnhandledResponse, errorDescription, nil, nil, httpUnderlyingError, context.correlationId, additionalInfo, YES);
 
     if (completionBlock) completionBlock(nil, httpError);
 }

IdentityCore/tests/MSIDAADRequestErrorHandlerTests.m

@@ -191,6 +191,8 @@ - (void)testHandleError_whenItIsNotServerError_shouldReturnStatusCodeAndHeaders
 
     XCTAssertEqualObjects(returnError.domain, MSIDHttpErrorCodeDomain);
     XCTAssertEqual(returnError.code, MSIDErrorServerUnhandledResponse);
+    NSError *underlyingError = returnError.userInfo[NSUnderlyingErrorKey];
+    XCTAssertEqual(underlyingError.code, MSIDErrorUnExpectedHttpResponse);
     XCTAssertEqualObjects(returnError.userInfo[MSIDHTTPHeadersKey], @{@"headerKey":@"headerValue"});
 
     XCTAssertNil(errorResponse);
@@ -275,6 +277,8 @@ - (void)testHandleError_whenItIsServerError_shouldReturnResponseCodeInError
 
     XCTAssertEqualObjects(returnError.domain, MSIDHttpErrorCodeDomain);
     XCTAssertEqual(returnError.code, MSIDErrorServerUnhandledResponse);
+    NSError *underlyingError = returnError.userInfo[NSUnderlyingErrorKey];
+    XCTAssertEqual(underlyingError.code, MSIDErrorUnExpectedHttpResponse);
     XCTAssertEqualObjects(returnError.userInfo[MSIDHTTPResponseCodeKey], @"404");
 }
 

IdentityCore/tests/integration/ios/MSIDDefaultSilentTokenRequestTests.m

@@ -1336,6 +1336,66 @@ - (void)testAcquireTokenSilent_when429ThrottledErrorReturned_shouldReturnAllHead
     [self waitForExpectationsWithTimeout:1.0 handler:nil];
 }
 
+
+- (void)testAcquireTokenSilent_when403HttpCodeReturned_shouldReturnMSIDErrorUnexpectedHttpResponseInUnderlyingError
+{
+    MSIDRequestParameters *silentParameters = [self silentRequestParameters];
+    MSIDDefaultTokenCacheAccessor *tokenCache = self.tokenCache;
+
+    [self saveExpiredTokensInCache:tokenCache configuration:silentParameters.msidConfiguration];
+    silentParameters.accountIdentifier = [[MSIDAccountIdentifier alloc] initWithDisplayableId:DEFAULT_TEST_ID_TOKEN_USERNAME homeAccountId:DEFAULT_TEST_HOME_ACCOUNT_ID];
+
+    NSString *authority = DEFAULT_TEST_AUTHORITY_GUID;
+    MSIDTestURLResponse *discoveryResponse = [MSIDTestURLResponse discoveryResponseForAuthority:authority];
+    [MSIDTestURLSession addResponse:discoveryResponse];
+
+    MSIDTestURLResponse *oidcResponse = [MSIDTestURLResponse oidcResponseForAuthority:authority];
+    [MSIDTestURLSession addResponse:oidcResponse];
+
+    NSMutableDictionary *reqHeaders = [[MSIDTestURLResponse msidDefaultRequestHeaders] mutableCopy];
+    [reqHeaders setObject:@"application/x-www-form-urlencoded" forKey:@"Content-Type"];
+
+    MSIDTestURLResponse *errorTokenResponse =
+    [MSIDTestURLResponse requestURLString:DEFAULT_TEST_TOKEN_ENDPOINT_GUID
+                           requestHeaders:reqHeaders
+                        requestParamsBody:@{ @"client_id" : @"my_client_id",
+                                             @"scope" : @"user.read tasks.read openid profile offline_access",
+                                             @"grant_type" : @"refresh_token",
+                                             @"refresh_token" : DEFAULT_TEST_REFRESH_TOKEN,
+                                             MSID_OAUTH2_REDIRECT_URI : [[self silentRequestParameters] redirectUri],
+                                             @"client_info" : @"1"}
+                        responseURLString:DEFAULT_TEST_TOKEN_ENDPOINT_GUID
+                             responseCode:403
+                         httpHeaderFields:@{@"Retry-After": @"256",
+                                            @"Other-Header-Field": @"Other header field"
+                                            }
+                         dictionaryAsJSON:nil];
+
+    [errorTokenResponse->_requestHeaders removeObjectForKey:@"Content-Length"];
+
+    [MSIDTestURLSession addResponse:errorTokenResponse];
+
+    MSIDDefaultSilentTokenRequest *silentRequest = [[MSIDDefaultSilentTokenRequest alloc] initWithRequestParameters:silentParameters
+                                                                                                       forceRefresh:NO
+                                                                                                       oauthFactory:[MSIDAADV2Oauth2Factory new]
+                                                                                             tokenResponseValidator:[MSIDDefaultTokenResponseValidator new]
+                                                                                                         tokenCache:tokenCache
+                                                                                                      accountMetadataCache:self.accountMetadataCache];
+
+    XCTestExpectation *expectation = [self expectationWithDescription:@"silent request"];
+
+    [silentRequest executeRequestWithCompletion:^(MSIDTokenResult * _Nullable result, NSError * _Nullable error) {
+
+        XCTAssertNotNil(error);
+        XCTAssertNil(result);
+        XCTAssertEqual(error.code, MSIDErrorServerUnhandledResponse);
+        XCTAssertEqualObjects(error.domain, MSIDHttpErrorCodeDomain);
+        XCTAssertEqualObjects(error.userInfo[MSIDHTTPResponseCodeKey], @"403");
+        [expectation fulfill];
+    }];
+
+    [self waitForExpectationsWithTimeout:1.0 handler:nil];
+}
 - (void)testAcquireTokenSilent_whenTokenEndpointInDifferentCloud_shouldReturnInteractionRequired
 {
     // Prepare RT in cache