chrome/browser/local_discovery/privet_notifications.cc

   1 // Copyright 2013 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/local_discovery/privet_notifications.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "base/location.h"
  10 #include "base/metrics/histogram.h"
  11 #include "base/prefs/pref_service.h"
  12 #include "base/rand_util.h"
  13 #include "base/single_thread_task_runner.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "base/thread_task_runner_handle.h"
  16 #include "chrome/browser/browser_process.h"
  17 #include "chrome/browser/local_discovery/privet_device_lister_impl.h"
  18 #include "chrome/browser/local_discovery/privet_http_asynchronous_factory.h"
  19 #include "chrome/browser/local_discovery/service_discovery_shared_client.h"
  20 #include "chrome/browser/notifications/notification.h"
  21 #include "chrome/browser/notifications/notification_ui_manager.h"
  22 #include "chrome/browser/profiles/profile.h"
  23 #include "chrome/browser/signin/signin_manager_factory.h"
  24 #include "chrome/browser/ui/browser.h"
  25 #include "chrome/browser/ui/browser_finder.h"
  26 #include "chrome/browser/ui/browser_window.h"
  27 #include "chrome/browser/ui/host_desktop.h"
  28 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  29 #include "chrome/browser/ui/webui/local_discovery/local_discovery_ui_handler.h"
  30 #include "chrome/common/chrome_switches.h"
  31 #include "chrome/common/pref_names.h"
  32 #include "chrome/grit/generated_resources.h"
  33 #include "components/signin/core/browser/signin_manager_base.h"
  34 #include "content/public/browser/browser_context.h"
  35 #include "content/public/browser/navigation_controller.h"
  36 #include "content/public/browser/web_contents.h"
  37 #include "grit/theme_resources.h"
  38 #include "ui/base/l10n/l10n_util.h"
  39 #include "ui/base/page_transition_types.h"
  40 #include "ui/base/resource/resource_bundle.h"
  41 #include "ui/message_center/notifier_settings.h"
  42
  43 #if defined(ENABLE_MDNS)
  44 #include "chrome/browser/local_discovery/privet_traffic_detector.h"
  45 #endif
  46
  47 namespace local_discovery {
  48
  49 namespace {
  50
  51 const int kTenMinutesInSeconds = 600;
  52 const char kPrivetInfoKeyUptime[] = "uptime";
  53 const char kPrivetNotificationID[] = "privet_notification";
  54 const char kPrivetNotificationOriginUrl[] = "chrome://devices";
  55 const int kStartDelaySeconds = 5;
  56
  57 enum PrivetNotificationsEvent {
  58   PRIVET_SERVICE_STARTED,
  59   PRIVET_LISTER_STARTED,
  60   PRIVET_DEVICE_CHANGED,
  61   PRIVET_INFO_DONE,
  62   PRIVET_NOTIFICATION_SHOWN,
  63   PRIVET_NOTIFICATION_CANCELED,
  64   PRIVET_NOTIFICATION_CLICKED,
  65   PRIVET_DISABLE_NOTIFICATIONS_CLICKED,
  66   PRIVET_EVENT_MAX,
  67 };
  68
  69 void ReportPrivetUmaEvent(PrivetNotificationsEvent privet_event) {
  70   UMA_HISTOGRAM_ENUMERATION("LocalDiscovery.PrivetNotificationsEvent",
  71                             privet_event, PRIVET_EVENT_MAX);
  72 }
  73
  74 }  // namespace
  75
  76 PrivetNotificationsListener::PrivetNotificationsListener(
  77     scoped_ptr<PrivetHTTPAsynchronousFactory> privet_http_factory,
  78     Delegate* delegate)
  79     : delegate_(delegate), devices_active_(0) {
  80   privet_http_factory_.swap(privet_http_factory);
  81 }
  82
  83 PrivetNotificationsListener::~PrivetNotificationsListener() {
  84 }
  85
  86 void PrivetNotificationsListener::DeviceChanged(
  87     bool added,
  88     const std::string& name,
  89     const DeviceDescription& description) {
  90   ReportPrivetUmaEvent(PRIVET_DEVICE_CHANGED);
  91   DeviceContextMap::iterator found = devices_seen_.find(name);
  92   if (found != devices_seen_.end()) {
  93     if (!description.id.empty() &&  // Device is registered
  94         found->second->notification_may_be_active) {
  95       found->second->notification_may_be_active = false;
  96       NotifyDeviceRemoved();
  97     }
  98     return;  // Already saw this device.
  99   }
 100
 101   linked_ptr<DeviceContext> device_context(new DeviceContext);
 102
 103   device_context->notification_may_be_active = false;
 104   device_context->registered = !description.id.empty();
 105
 106   devices_seen_.insert(make_pair(name, device_context));
 107
 108   if (!device_context->registered) {
 109     device_context->privet_http_resolution =
 110         privet_http_factory_->CreatePrivetHTTP(name);
 111     device_context->privet_http_resolution->Start(
 112         description.address,
 113         base::Bind(&PrivetNotificationsListener::CreateInfoOperation,
 114                    base::Unretained(this)));
 115   }
 116 }
 117
 118 void PrivetNotificationsListener::CreateInfoOperation(
 119     scoped_ptr<PrivetHTTPClient> http_client) {
 120   if (!http_client) {
 121     // Do nothing if resolution fails.
 122     return;
 123   }
 124
 125   std::string name = http_client->GetName();
 126   DeviceContextMap::iterator device_iter = devices_seen_.find(name);
 127   if (device_iter == devices_seen_.end())
 128     return;
 129   DeviceContext* device = device_iter->second.get();
 130   device->privet_http.swap(http_client);
 131   device->info_operation = device->privet_http->CreateInfoOperation(
 132       base::Bind(&PrivetNotificationsListener::OnPrivetInfoDone,
 133                  base::Unretained(this),
 134                  device));
 135   device->info_operation->Start();
 136 }
 137
 138 void PrivetNotificationsListener::OnPrivetInfoDone(
 139     DeviceContext* device,
 140     const base::DictionaryValue* json_value) {
 141   int uptime;
 142
 143   if (!json_value ||
 144       !json_value->GetInteger(kPrivetInfoKeyUptime, &uptime) ||
 145       uptime > kTenMinutesInSeconds) {
 146     return;
 147   }
 148
 149   DCHECK(!device->notification_may_be_active);
 150   device->notification_may_be_active = true;
 151   devices_active_++;
 152   delegate_->PrivetNotify(devices_active_, true);
 153 }
 154
 155 void PrivetNotificationsListener::DeviceRemoved(const std::string& name) {
 156   DeviceContextMap::iterator device_iter = devices_seen_.find(name);
 157   if (device_iter == devices_seen_.end())
 158     return;
 159   DeviceContext* device = device_iter->second.get();
 160
 161   device->info_operation.reset();
 162   device->privet_http_resolution.reset();
 163   device->notification_may_be_active = false;
 164   NotifyDeviceRemoved();
 165 }
 166
 167 void PrivetNotificationsListener::DeviceCacheFlushed() {
 168   for (DeviceContextMap::iterator i = devices_seen_.begin();
 169        i != devices_seen_.end(); ++i) {
 170     DeviceContext* device = i->second.get();
 171
 172     device->info_operation.reset();
 173     device->privet_http_resolution.reset();
 174     if (device->notification_may_be_active) {
 175       device->notification_may_be_active = false;
 176     }
 177   }
 178
 179   devices_active_ = 0;
 180   delegate_->PrivetRemoveNotification();
 181 }
 182
 183 void PrivetNotificationsListener::NotifyDeviceRemoved() {
 184   devices_active_--;
 185   if (devices_active_ == 0) {
 186     delegate_->PrivetRemoveNotification();
 187   } else {
 188     delegate_->PrivetNotify(devices_active_, false);
 189   }
 190 }
 191
 192 PrivetNotificationsListener::DeviceContext::DeviceContext() {
 193 }
 194
 195 PrivetNotificationsListener::DeviceContext::~DeviceContext() {
 196 }
 197
 198 PrivetNotificationService::PrivetNotificationService(
 199     content::BrowserContext* profile)
 200     : profile_(profile) {
 201   base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
 202       FROM_HERE, base::Bind(&PrivetNotificationService::Start, AsWeakPtr()),
 203       base::TimeDelta::FromSeconds(kStartDelaySeconds +
 204                                    base::RandInt(0, kStartDelaySeconds / 4)));
 205 }
 206
 207 PrivetNotificationService::~PrivetNotificationService() {
 208 }
 209
 210 void PrivetNotificationService::DeviceChanged(
 211     bool added,
 212     const std::string& name,
 213     const DeviceDescription& description) {
 214   privet_notifications_listener_->DeviceChanged(added, name, description);
 215 }
 216
 217 void PrivetNotificationService::DeviceRemoved(const std::string& name) {
 218   privet_notifications_listener_->DeviceRemoved(name);
 219 }
 220
 221 void PrivetNotificationService::DeviceCacheFlushed() {
 222   privet_notifications_listener_->DeviceCacheFlushed();
 223 }
 224
 225 // static
 226 bool PrivetNotificationService::IsEnabled() {
 227   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 228   return !command_line->HasSwitch(
 229       switches::kDisableDeviceDiscoveryNotifications);
 230 }
 231
 232 // static
 233 bool PrivetNotificationService::IsForced() {
 234   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 235   return command_line->HasSwitch(switches::kEnableDeviceDiscoveryNotifications);
 236 }
 237
 238 void PrivetNotificationService::PrivetNotify(int devices_active,
 239                                              bool added) {
 240   base::string16 product_name = l10n_util::GetStringUTF16(
 241       IDS_LOCAL_DISCOVERY_SERVICE_NAME_PRINTER);
 242
 243   base::string16 title = l10n_util::GetPluralStringFUTF16(
 244       IDS_LOCAL_DISCOVERY_NOTIFICATION_TITLE_PRINTER, devices_active);
 245   base::string16 body = l10n_util::GetPluralStringFUTF16(
 246       IDS_LOCAL_DISCOVERY_NOTIFICATION_CONTENTS_PRINTER, devices_active);
 247
 248   Profile* profile_object = Profile::FromBrowserContext(profile_);
 249   message_center::RichNotificationData rich_notification_data;
 250
 251   rich_notification_data.buttons.push_back(
 252       message_center::ButtonInfo(l10n_util::GetStringUTF16(
 253           IDS_LOCAL_DISCOVERY_NOTIFICATION_BUTTON_PRINTER)));
 254
 255   rich_notification_data.buttons.push_back(
 256       message_center::ButtonInfo(l10n_util::GetStringUTF16(
 257           IDS_LOCAL_DISCOVERY_NOTIFICATIONS_DISABLE_BUTTON_LABEL)));
 258
 259   Notification notification(
 260       message_center::NOTIFICATION_TYPE_SIMPLE, title, body,
 261       ui::ResourceBundle::GetSharedInstance().GetImageNamed(
 262           IDR_LOCAL_DISCOVERY_CLOUDPRINT_ICON),
 263       message_center::NotifierId(GURL(kPrivetNotificationOriginUrl)),
 264       product_name, GURL(kPrivetNotificationOriginUrl), kPrivetNotificationID,
 265       rich_notification_data, new PrivetNotificationDelegate(profile_));
 266
 267   bool updated = g_browser_process->notification_ui_manager()->Update(
 268       notification, profile_object);
 269   if (!updated && added && !LocalDiscoveryUIHandler::GetHasVisible()) {
 270     ReportPrivetUmaEvent(PRIVET_NOTIFICATION_SHOWN);
 271     g_browser_process->notification_ui_manager()->Add(notification,
 272                                                       profile_object);
 273   }
 274 }
 275
 276 void PrivetNotificationService::PrivetRemoveNotification() {
 277   ReportPrivetUmaEvent(PRIVET_NOTIFICATION_CANCELED);
 278   Profile* profile_object = Profile::FromBrowserContext(profile_);
 279   g_browser_process->notification_ui_manager()->CancelById(
 280       kPrivetNotificationID,
 281       NotificationUIManager::GetProfileID(profile_object));
 282 }
 283
 284 void PrivetNotificationService::Start() {
 285 #if defined(CHROMEOS)
 286   SigninManagerBase* signin_manager =
 287       SigninManagerFactory::GetForProfileIfExists(
 288           Profile::FromBrowserContext(profile_));
 289
 290   if (!signin_manager || !signin_manager->IsAuthenticated())
 291     return;
 292 #endif
 293
 294   enable_privet_notification_member_.Init(
 295       prefs::kLocalDiscoveryNotificationsEnabled,
 296       Profile::FromBrowserContext(profile_)->GetPrefs(),
 297       base::Bind(&PrivetNotificationService::OnNotificationsEnabledChanged,
 298                  base::Unretained(this)));
 299   OnNotificationsEnabledChanged();
 300 }
 301
 302 void PrivetNotificationService::OnNotificationsEnabledChanged() {
 303 #if defined(ENABLE_MDNS)
 304   if (IsForced()) {
 305     StartLister();
 306   } else if (*enable_privet_notification_member_) {
 307     ReportPrivetUmaEvent(PRIVET_SERVICE_STARTED);
 308     traffic_detector_ =
 309         new PrivetTrafficDetector(
 310             net::ADDRESS_FAMILY_IPV4,
 311             base::Bind(&PrivetNotificationService::StartLister, AsWeakPtr()));
 312     traffic_detector_->Start();
 313   } else {
 314     traffic_detector_ = NULL;
 315     device_lister_.reset();
 316     service_discovery_client_ = NULL;
 317     privet_notifications_listener_.reset();
 318   }
 319 #else
 320   if (IsForced() || *enable_privet_notification_member_) {
 321     StartLister();
 322   } else {
 323     device_lister_.reset();
 324     service_discovery_client_ = NULL;
 325     privet_notifications_listener_.reset();
 326   }
 327 #endif
 328 }
 329
 330 void PrivetNotificationService::StartLister() {
 331   ReportPrivetUmaEvent(PRIVET_LISTER_STARTED);
 332 #if defined(ENABLE_MDNS)
 333   traffic_detector_ = NULL;
 334 #endif  // ENABLE_MDNS
 335   service_discovery_client_ = ServiceDiscoverySharedClient::GetInstance();
 336   device_lister_.reset(
 337       new PrivetDeviceListerImpl(service_discovery_client_.get(), this));
 338   device_lister_->Start();
 339   device_lister_->DiscoverNewDevices(false);
 340
 341   scoped_ptr<PrivetHTTPAsynchronousFactory> http_factory(
 342       PrivetHTTPAsynchronousFactory::CreateInstance(
 343           profile_->GetRequestContext()));
 344
 345   privet_notifications_listener_.reset(new PrivetNotificationsListener(
 346       http_factory.Pass(), this));
 347 }
 348
 349 PrivetNotificationDelegate::PrivetNotificationDelegate(
 350     content::BrowserContext* profile)
 351     :  profile_(profile) {
 352 }
 353
 354 PrivetNotificationDelegate::~PrivetNotificationDelegate() {
 355 }
 356
 357 std::string PrivetNotificationDelegate::id() const {
 358   return kPrivetNotificationID;
 359 }
 360
 361 void PrivetNotificationDelegate::ButtonClick(int button_index) {
 362   if (button_index == 0) {
 363     ReportPrivetUmaEvent(PRIVET_NOTIFICATION_CLICKED);
 364     OpenTab(GURL(kPrivetNotificationOriginUrl));
 365   } else if (button_index == 1) {
 366     ReportPrivetUmaEvent(PRIVET_DISABLE_NOTIFICATIONS_CLICKED);
 367     DisableNotifications();
 368   }
 369 }
 370
 371 void PrivetNotificationDelegate::OpenTab(const GURL& url) {
 372   Profile* profile_obj = Profile::FromBrowserContext(profile_);
 373
 374   chrome::NavigateParams params(profile_obj,
 375                               url,
 376                               ui::PAGE_TRANSITION_AUTO_TOPLEVEL);
 377   params.disposition = NEW_FOREGROUND_TAB;
 378   chrome::Navigate(&params);
 379 }
 380
 381 void PrivetNotificationDelegate::DisableNotifications() {
 382   Profile* profile_obj = Profile::FromBrowserContext(profile_);
 383
 384   profile_obj->GetPrefs()->SetBoolean(
 385       prefs::kLocalDiscoveryNotificationsEnabled,
 386       false);
 387 }
 388
 389 }  // namespace local_discovery