chrome/browser/services/gcm/push_messaging_service_impl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/services/gcm/push_messaging_service_impl.h"
   6
   7 #include <vector>
   8
   9 #include "base/bind.h"
  10 #include "base/command_line.h"
  11 #include "base/prefs/pref_service.h"
  12 #include "base/strings/string_util.h"
  13 #include "chrome/browser/profiles/profile.h"
  14 #include "chrome/browser/services/gcm/gcm_profile_service.h"
  15 #include "chrome/browser/services/gcm/gcm_profile_service_factory.h"
  16 #include "chrome/browser/services/gcm/push_messaging_application_id.h"
  17 #include "chrome/browser/services/gcm/push_messaging_permission_context.h"
  18 #include "chrome/browser/services/gcm/push_messaging_permission_context_factory.h"
  19 #include "chrome/common/chrome_switches.h"
  20 #include "chrome/common/pref_names.h"
  21 #include "components/content_settings/core/common/permission_request_id.h"
  22 #include "components/gcm_driver/gcm_driver.h"
  23 #include "components/pref_registry/pref_registry_syncable.h"
  24 #include "content/public/browser/browser_context.h"
  25 #include "content/public/browser/render_frame_host.h"
  26 #include "content/public/browser/web_contents.h"
  27
  28 namespace gcm {
  29
  30 namespace {
  31 const int kMaxRegistrations = 1000000;
  32 }  // namespace
  33
  34 // static
  35 void PushMessagingServiceImpl::RegisterProfilePrefs(
  36     user_prefs::PrefRegistrySyncable* registry) {
  37   registry->RegisterIntegerPref(
  38       prefs::kPushMessagingRegistrationCount,
  39       0,
  40       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
  41 }
  42
  43 // static
  44 void PushMessagingServiceImpl::InitializeForProfile(Profile* profile) {
  45   // TODO(mvanouwerkerk): Make sure to remove this check at the same time as
  46   // push graduates from experimental in Blink.
  47   if (!CommandLine::ForCurrentProcess()->HasSwitch(
  48           switches::kEnableExperimentalWebPlatformFeatures)) {
  49     return;
  50   }
  51   // TODO(johnme): Consider whether push should be enabled in incognito. If it
  52   // does get enabled, then be careful that you're reading the pref from the
  53   // right profile, as prefs defined in a regular profile are visible in the
  54   // corresponding incognito profile unless overrriden.
  55   if (!profile || profile->IsOffTheRecord() ||
  56       profile->GetPrefs()->GetInteger(prefs::kPushMessagingRegistrationCount) <=
  57           0) {
  58     return;
  59   }
  60   // Create the GCMProfileService, and hence instantiate this class.
  61   GCMProfileService* gcm_service =
  62       gcm::GCMProfileServiceFactory::GetForProfile(profile);
  63   PushMessagingServiceImpl* push_service =
  64       static_cast<PushMessagingServiceImpl*>(
  65           gcm_service->push_messaging_service());
  66   // Register ourselves as an app handler.
  67   gcm_service->driver()->AddAppHandler(kPushMessagingApplicationIdPrefix,
  68                                        push_service);
  69 }
  70
  71 PushMessagingServiceImpl::PushMessagingServiceImpl(
  72     GCMProfileService* gcm_profile_service,
  73     Profile* profile)
  74     : gcm_profile_service_(gcm_profile_service),
  75       profile_(profile),
  76       weak_factory_(this) {
  77 }
  78
  79 PushMessagingServiceImpl::~PushMessagingServiceImpl() {
  80   // TODO(johnme): If it's possible for this to be destroyed before GCMDriver,
  81   // then we should call RemoveAppHandler.
  82 }
  83
  84 bool PushMessagingServiceImpl::CanHandle(const std::string& app_id) const {
  85   return PushMessagingApplicationId::Parse(app_id).IsValid();
  86 }
  87
  88 void PushMessagingServiceImpl::ShutdownHandler() {
  89   // TODO(johnme): Do any necessary cleanup.
  90 }
  91
  92 void PushMessagingServiceImpl::OnMessage(
  93     const std::string& app_id,
  94     const GCMClient::IncomingMessage& message) {
  95   // The Push API only exposes a single string of data in the push event fired
  96   // on the Service Worker. When developers send messages using GCM to the Push
  97   // API, they must pass a single key-value pair, where the key is "data" and
  98   // the value is the string they want to be passed to their Service Worker.
  99   // For example, they could send the following JSON using the HTTPS GCM API:
 100   // {
 101   //     "registration_ids": ["FOO", "BAR"],
 102   //     "data": {
 103   //         "data": "BAZ",
 104   //     },
 105   //     "delay_while_idle": true,
 106   // }
 107   // TODO(johnme): Make sure this is clearly documented for developers.
 108   PushMessagingApplicationId application_id =
 109       PushMessagingApplicationId::Parse(app_id);
 110   DCHECK(application_id.IsValid());
 111   GCMClient::MessageData::const_iterator it = message.data.find("data");
 112   if (application_id.IsValid() && it != message.data.end()) {
 113     const std::string& data = it->second;
 114     content::BrowserContext::DeliverPushMessage(
 115         profile_,
 116         application_id.origin,
 117         application_id.service_worker_registration_id,
 118         data,
 119         base::Bind(&PushMessagingServiceImpl::DeliverMessageCallback,
 120                    weak_factory_.GetWeakPtr(),
 121                    application_id,
 122                    message));
 123   } else {
 124     // Drop the message, as it is invalid.
 125     // TODO(mvanouwerkerk): Show a warning in the developer console of the
 126     // Service Worker corresponding to app_id.
 127     // TODO(johnme): Add diagnostic observers (e.g. UMA and an internals page)
 128     // to know when bad things happen.
 129   }
 130 }
 131
 132 void PushMessagingServiceImpl::DeliverMessageCallback(
 133     const PushMessagingApplicationId& application_id,
 134     const GCMClient::IncomingMessage& message,
 135     content::PushDeliveryStatus status) {
 136   // TODO(mvanouwerkerk): UMA logging.
 137   // TODO(mvanouwerkerk): Is there a way to recover from failure?
 138 }
 139
 140 void PushMessagingServiceImpl::OnMessagesDeleted(const std::string& app_id) {
 141   // TODO(mvanouwerkerk): Fire push error event on the Service Worker
 142   // corresponding to app_id.
 143 }
 144
 145 void PushMessagingServiceImpl::OnSendError(
 146     const std::string& app_id,
 147     const GCMClient::SendErrorDetails& send_error_details) {
 148   NOTREACHED() << "The Push API shouldn't have sent messages upstream";
 149 }
 150
 151 void PushMessagingServiceImpl::OnSendAcknowledged(
 152     const std::string& app_id,
 153     const std::string& message_id) {
 154   NOTREACHED() << "The Push API shouldn't have sent messages upstream";
 155 }
 156
 157 void PushMessagingServiceImpl::Register(
 158     const GURL& origin,
 159     int64 service_worker_registration_id,
 160     const std::string& sender_id,
 161     int renderer_id,
 162     int render_frame_id,
 163     bool user_gesture,
 164     const content::PushMessagingService::RegisterCallback& callback) {
 165   if (!gcm_profile_service_->driver()) {
 166     NOTREACHED() << "There is no GCMDriver. Has GCMProfileService shut down?";
 167   }
 168
 169   PushMessagingApplicationId application_id =
 170       PushMessagingApplicationId(origin, service_worker_registration_id);
 171   DCHECK(application_id.IsValid());
 172
 173   if (profile_->GetPrefs()->GetInteger(
 174           prefs::kPushMessagingRegistrationCount) >= kMaxRegistrations) {
 175     RegisterEnd(callback,
 176                 std::string(),
 177                 content::PUSH_REGISTRATION_STATUS_LIMIT_REACHED);
 178     return;
 179   }
 180
 181   // If this is registering for the first time then the driver does not have
 182   // this as an app handler and registration would fail.
 183   if (gcm_profile_service_->driver()->GetAppHandler(
 184           kPushMessagingApplicationIdPrefix) != this)
 185     gcm_profile_service_->driver()->AddAppHandler(
 186         kPushMessagingApplicationIdPrefix, this);
 187
 188   content::RenderFrameHost* render_frame_host =
 189       content::RenderFrameHost::FromID(renderer_id, render_frame_id);
 190
 191   // The frame doesn't exist any more, or we received a bad frame id.
 192   if (!render_frame_host)
 193     return;
 194
 195   content::WebContents* web_contents =
 196       content::WebContents::FromRenderFrameHost(render_frame_host);
 197
 198   // The page doesn't exist any more or we got a bad render frame host.
 199   if (!web_contents)
 200     return;
 201
 202   // TODO(miguelg) need to send this over IPC when bubble support is
 203   // implemented.
 204   int bridge_id = -1;
 205
 206   const PermissionRequestID id(
 207       renderer_id, web_contents->GetRoutingID(), bridge_id, GURL());
 208
 209   GURL embedder = web_contents->GetLastCommittedURL();
 210   gcm::PushMessagingPermissionContext* permission_context =
 211       gcm::PushMessagingPermissionContextFactory::GetForProfile(profile_);
 212
 213   if (permission_context == NULL) {
 214     RegisterEnd(callback,
 215                 std::string(),
 216                 content::PUSH_REGISTRATION_STATUS_PERMISSION_DENIED);
 217     return;
 218   }
 219
 220   permission_context->RequestPermission(
 221       web_contents,
 222       id,
 223       embedder,
 224       user_gesture,
 225       base::Bind(&PushMessagingServiceImpl::DidRequestPermission,
 226                  weak_factory_.GetWeakPtr(),
 227                  application_id,
 228                  sender_id,
 229                  callback));
 230 }
 231
 232 void PushMessagingServiceImpl::RegisterEnd(
 233     const content::PushMessagingService::RegisterCallback& callback,
 234     const std::string& registration_id,
 235     content::PushRegistrationStatus status) {
 236   GURL endpoint = GURL("https://android.googleapis.com/gcm/send");
 237   callback.Run(endpoint, registration_id, status);
 238   if (status == content::PUSH_REGISTRATION_STATUS_SUCCESS) {
 239     // TODO(johnme): Make sure the pref doesn't get out of sync after crashes.
 240     int registration_count = profile_->GetPrefs()->GetInteger(
 241         prefs::kPushMessagingRegistrationCount);
 242     profile_->GetPrefs()->SetInteger(prefs::kPushMessagingRegistrationCount,
 243                                      registration_count + 1);
 244   }
 245 }
 246
 247 void PushMessagingServiceImpl::DidRegister(
 248     const content::PushMessagingService::RegisterCallback& callback,
 249     const std::string& registration_id,
 250     GCMClient::Result result) {
 251   content::PushRegistrationStatus status =
 252       result == GCMClient::SUCCESS
 253           ? content::PUSH_REGISTRATION_STATUS_SUCCESS
 254           : content::PUSH_REGISTRATION_STATUS_SERVICE_ERROR;
 255   RegisterEnd(callback, registration_id, status);
 256 }
 257
 258 void PushMessagingServiceImpl::DidRequestPermission(
 259     const PushMessagingApplicationId& application_id,
 260     const std::string& sender_id,
 261     const content::PushMessagingService::RegisterCallback& register_callback,
 262     bool allow) {
 263   if (!allow) {
 264     RegisterEnd(register_callback,
 265                 std::string(),
 266                 content::PUSH_REGISTRATION_STATUS_PERMISSION_DENIED);
 267     return;
 268   }
 269
 270   // The GCMDriver could be NULL if GCMProfileService has been shut down.
 271   if (!gcm_profile_service_->driver())
 272     return;
 273
 274   std::vector<std::string> sender_ids(1, sender_id);
 275
 276   gcm_profile_service_->driver()->Register(
 277       application_id.ToString(),
 278       sender_ids,
 279       base::Bind(&PushMessagingServiceImpl::DidRegister,
 280                  weak_factory_.GetWeakPtr(),
 281                  register_callback));
 282 }
 283
 284 // TODO(johnme): Unregister should decrement the pref, and call
 285 // RemoveAppHandler if the count drops to zero.
 286
 287 }  // namespace gcm