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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#import "MakeRPCViewController.h"
#import <AuthTestService/AuthSample.pbrpc.h>
#import <Google/SignIn.h>
#include <grpc/status.h>
#import <ProtoRPC/ProtoRPC.h>
NSString * const kTestScope = @"https://www.googleapis.com/auth/xapi.zoo";
static NSString * const kTestHostAddress = @"grpc-test.sandbox.google.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 == GRPC_STATUS_UNAUTHENTICATED) {
// Authentication error. OAuth2 specifies we'll receive a challenge header.
// |userInfo[kGRPCStatusMetadataKey]| is the dictionary of response metadata.
NSString *challengeHeader = self.userInfo[kGRPCStatusMetadataKey][@"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.requestMetadata[@"Authorization"] = [@"Bearer " stringByAppendingString:accessToken];
// Start the RPC.
[call start];
self.mainLabel.text = @"Waiting for RPC to complete...";
}
@end
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