iOS Chromoting Client

remoting/ios/authorize.mm

Index: remoting/ios/authorize.mm
diff --git a/remoting/ios/authorize.mm b/remoting/ios/authorize.mm
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+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+#import "remoting/ios/authorize.h"
+
+// TODO (aboone) This include is for The Google Toolbox for Mac OAuth 2
+// Controllers https://code.google.com/p/gtm-oauth2/ This may need to be added
+// as a third-party or locate the proper project in Chromium.
+#import "GTMOAuth2ViewControllerTouch.h"
+
+#include "google_apis/google_api_keys.h"
+// TODO (aboone) Pulling in some service values from the host side.  The cc's
+// are also compiled as part of this project because the target remoting_host
+// does not build on iOS right now.
+#include "remoting/host/service_urls.h"
+#include "remoting/host/setup/oauth_helper.h"
+
+namespace {
+static NSString* const kKeychainItemName = @"Google Chromoting iOS";
+
+NSString* ClientId() {
+  return
+      [NSString stringWithUTF8String:google_apis::GetOAuth2ClientID(
+                                         google_apis::CLIENT_REMOTING).c_str()];
+}
+
+NSString* ClientSecret() {
+  return
+      [NSString stringWithUTF8String:google_apis::GetOAuth2ClientSecret(
+                                         google_apis::CLIENT_REMOTING).c_str()];
+}
+
+NSString* Scopes() {
+  return [NSString stringWithUTF8String:remoting::GetOauthScope().c_str()];
+}
+
+NSMutableString* HostURL() {
+  return
+      [NSMutableString stringWithUTF8String:remoting::ServiceUrls::GetInstance()
+                                                ->directory_hosts_url()
+                                                .c_str()];
+}
+
+NSString* APIKey() {
+  return [NSString stringWithUTF8String:google_apis::GetAPIKey().c_str()];
+}
+
+}  // namespace
+
+@implementation Authorize
+
++ (GTMOAuth2Authentication*)getAnyExistingAuthorization {
+  // Ensure the google_apis lib has keys
+  // If this check fails then google_apis was not built right
+  // TODO (aboone) For now we specify the preprocessor macros for
+  // GOOGLE_CLIENT_SECRET_REMOTING and GOOGLE_CLIENT_ID_REMOTING when building
+  // the google_apis target.  The values may be developer specific, and should
+  // be well know to the project staff.
+  // See http://www.chromium.org/developers/how-tos/api-keys for more general
+  // information.
+  DCHECK(![ClientId() isEqualToString:@"dummytoken"]);
+
+  return [GTMOAuth2ViewControllerTouch
+      authForGoogleFromKeychainForName:kKeychainItemName
+                              clientID:ClientId()
+                          clientSecret:ClientSecret()];
+}
+
++ (void)beginRequest:(GTMOAuth2Authentication*)authReq
+             delegate:(id)delegate
+    didFinishSelector:(SEL)sel {
+  // Build request URL using API HTTP endpoint, and our api key
+  NSMutableString* hostsUrl = HostURL();
+  [hostsUrl appendString:@"?key="];
+  [hostsUrl appendString:APIKey()];
+
+  NSMutableURLRequest* theRequest =
+      [NSMutableURLRequest requestWithURL:[NSURL URLWithString:hostsUrl]];
+
+  // Add scopes if needed
+  NSString* scope = authReq.scope;
+
+  if ([scope rangeOfString:Scopes()].location == NSNotFound) {
+    scope = [GTMOAuth2Authentication scopeWithStrings:scope, Scopes(), nil];
+    authReq.scope = scope;
+  }
+
+  // Execute request async
+  [authReq authorizeRequest:theRequest delegate:delegate didFinishSelector:sel];
+}
+
++ (void)appendCredentials:(NSMutableURLRequest*)request {
+  // Add credentials for service
+  [request addValue:ClientId() forHTTPHeaderField:@"client_id"];
+  [request addValue:ClientSecret() forHTTPHeaderField:@"client_secret"];
+}
+
++ (UINavigationController*)createLoginController:(id)delegate
+                                finishedSelector:(SEL)finishedSelector {
+  [GTMOAuth2ViewControllerTouch
+      removeAuthFromKeychainForName:kKeychainItemName];
+
+  // When the sign in is complete a http redirection occurs, and the
+  // user would see the output.  We do not want the user to notice this
+  // transition.  Wrapping the oAuth2 Controller in a
+  // UINavigationController causes the view to render as a blank/black
+  // page when a http redirection occurs.
+  return [[UINavigationController alloc]
+      initWithRootViewController:[[GTMOAuth2ViewControllerTouch alloc]
+                                        initWithScope:Scopes()
+                                             clientID:ClientId()
+                                         clientSecret:ClientSecret()
+                                     keychainItemName:kKeychainItemName
+                                             delegate:delegate
+                                     finishedSelector:finishedSelector]];
+}
+
+@end