| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #import "MakeRPCViewController.h" |
| |
| #import <AuthTestService/AuthSample.pbrpc.h> |
| #import <Google/SignIn.h> |
| #import <ProtoRPC/ProtoRPC.h> |
| |
| NSString * const kTestScope = @"https://www.googleapis.com/auth/xapi.zoo"; |
| |
| static NSString * const kTestHostAddress = @"grpc-test.sandbox.googleapis.com"; |
| |
| // Category for RPC errors to create the descriptions as we want them to appear on our view. |
| @interface NSError (AuthSample) |
| - (NSString *)UIDescription; |
| @end |
| |
| @implementation NSError (AuthSample) |
| - (NSString *)UIDescription { |
| if (self.code == GRPCErrorCodeUnauthenticated) { |
| // Authentication error. OAuth2 specifies we'll receive a challenge header. |
| // |userInfo[kGRPCHeadersKey]| is the dictionary of response headers. |
| NSString *challengeHeader = self.userInfo[kGRPCHeadersKey][@"www-authenticate"] ?: @""; |
| return [@"Invalid credentials. Server challenge:\n" stringByAppendingString:challengeHeader]; |
| } else { |
| // Any other error. |
| return [NSString stringWithFormat:@"Unexpected RPC error %li: %@", |
| (long)self.code, self.localizedDescription]; |
| } |
| } |
| @end |
| |
| @implementation MakeRPCViewController |
| |
| - (void)viewWillAppear:(BOOL)animated { |
| |
| // Create a service client and a proto request as usual. |
| AUTHTestService *client = [[AUTHTestService alloc] initWithHost:kTestHostAddress]; |
| |
| AUTHRequest *request = [AUTHRequest message]; |
| request.fillUsername = YES; |
| request.fillOauthScope = YES; |
| |
| // Create a not-yet-started RPC. We want to set the request headers on this object before starting |
| // it. |
| ProtoRPC *call = |
| [client RPCToUnaryCallWithRequest:request handler:^(AUTHResponse *response, NSError *error) { |
| if (response) { |
| // This test server responds with the email and scope of the access token it receives. |
| self.mainLabel.text = [NSString stringWithFormat:@"Used scope: %@ on behalf of user %@", |
| response.oauthScope, response.username]; |
| |
| } else { |
| self.mainLabel.text = error.UIDescription; |
| } |
| }]; |
| |
| // Set the access token to be used. |
| NSString *accessToken = GIDSignIn.sharedInstance.currentUser.authentication.accessToken; |
| call.requestHeaders[@"Authorization"] = [@"Bearer " stringByAppendingString:accessToken]; |
| |
| // Start the RPC. |
| [call start]; |
| |
| self.mainLabel.text = @"Waiting for RPC to complete..."; |
| } |
| |
| @end |