chrome/service/cloud_print/cloud_print_proxy.cc

   1 // Copyright (c) 2012 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/service/cloud_print/cloud_print_proxy.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "base/metrics/histogram.h"
  10 #include "base/path_service.h"
  11 #include "base/process/kill.h"
  12 #include "base/process/launch.h"
  13 #include "base/values.h"
  14 #include "chrome/common/chrome_switches.h"
  15 #include "chrome/common/cloud_print/cloud_print_constants.h"
  16 #include "chrome/common/cloud_print/cloud_print_proxy_info.h"
  17 #include "chrome/common/pref_names.h"
  18 #include "chrome/service/cloud_print/print_system.h"
  19 #include "chrome/service/service_process.h"
  20 #include "chrome/service/service_process_prefs.h"
  21 #include "google_apis/gaia/gaia_oauth_client.h"
  22 #include "google_apis/google_api_keys.h"
  23 #include "url/gurl.h"
  24
  25 namespace {
  26
  27 void LaunchBrowserProcessWithSwitch(const std::string& switch_string) {
  28   DCHECK(g_service_process->io_thread()->message_loop_proxy()->
  29       BelongsToCurrentThread());
  30   base::FilePath exe_path;
  31   PathService::Get(base::FILE_EXE, &exe_path);
  32   if (exe_path.empty()) {
  33     NOTREACHED() << "Unable to get browser process binary name.";
  34   }
  35   CommandLine cmd_line(exe_path);
  36
  37   const CommandLine& process_command_line = *CommandLine::ForCurrentProcess();
  38   base::FilePath user_data_dir =
  39       process_command_line.GetSwitchValuePath(switches::kUserDataDir);
  40   if (!user_data_dir.empty())
  41     cmd_line.AppendSwitchPath(switches::kUserDataDir, user_data_dir);
  42   cmd_line.AppendSwitch(switch_string);
  43
  44 #if defined(OS_POSIX) && !defined(OS_MACOSX)
  45   base::ProcessHandle pid = 0;
  46   base::LaunchProcess(cmd_line, base::LaunchOptions(), &pid);
  47   base::EnsureProcessGetsReaped(pid);
  48 #else
  49   base::LaunchOptions launch_options;
  50 #if defined(OS_WIN)
  51   launch_options.force_breakaway_from_job_ = true;
  52 #endif  // OS_WIN
  53   base::LaunchProcess(cmd_line, launch_options, NULL);
  54 #endif
  55 }
  56
  57 void CheckCloudPrintProxyPolicyInBrowser() {
  58   LaunchBrowserProcessWithSwitch(switches::kCheckCloudPrintConnectorPolicy);
  59 }
  60
  61 }  // namespace
  62
  63 namespace cloud_print {
  64
  65 CloudPrintProxy::CloudPrintProxy()
  66     : service_prefs_(NULL),
  67       client_(NULL),
  68       enabled_(false) {
  69 }
  70
  71 CloudPrintProxy::~CloudPrintProxy() {
  72   DCHECK(CalledOnValidThread());
  73   ShutdownBackend();
  74 }
  75
  76 void CloudPrintProxy::Initialize(ServiceProcessPrefs* service_prefs,
  77                                  Client* client) {
  78   DCHECK(CalledOnValidThread());
  79   service_prefs_ = service_prefs;
  80   client_ = client;
  81 }
  82
  83 void CloudPrintProxy::EnableForUser() {
  84   DCHECK(CalledOnValidThread());
  85   if (!CreateBackend())
  86     return;
  87   DCHECK(backend_.get());
  88   // Read persisted robot credentials because we may decide to reuse it if the
  89   // passed in LSID belongs the same user.
  90   std::string robot_refresh_token = service_prefs_->GetString(
  91       prefs::kCloudPrintRobotRefreshToken, std::string());
  92   std::string robot_email =
  93       service_prefs_->GetString(prefs::kCloudPrintRobotEmail, std::string());
  94   user_email_ = service_prefs_->GetString(prefs::kCloudPrintEmail, user_email_);
  95
  96   // See if we have persisted robot credentials.
  97   if (!robot_refresh_token.empty()) {
  98     DCHECK(!robot_email.empty());
  99     backend_->InitializeWithRobotToken(robot_refresh_token, robot_email);
 100   } else {
 101     // Finally see if we have persisted user credentials (legacy case).
 102     std::string cloud_print_token =
 103         service_prefs_->GetString(prefs::kCloudPrintAuthToken, std::string());
 104     DCHECK(!cloud_print_token.empty());
 105     backend_->InitializeWithToken(cloud_print_token);
 106   }
 107   if (client_) {
 108     client_->OnCloudPrintProxyEnabled(true);
 109   }
 110 }
 111
 112 void CloudPrintProxy::EnableForUserWithRobot(
 113     const std::string& robot_auth_code,
 114     const std::string& robot_email,
 115     const std::string& user_email,
 116     const base::DictionaryValue& user_settings) {
 117   DCHECK(CalledOnValidThread());
 118
 119   ShutdownBackend();
 120   std::string proxy_id(
 121       service_prefs_->GetString(prefs::kCloudPrintProxyId, std::string()));
 122   service_prefs_->RemovePref(prefs::kCloudPrintRoot);
 123   if (!proxy_id.empty()) {
 124     // Keep only proxy id;
 125     service_prefs_->SetString(prefs::kCloudPrintProxyId, proxy_id);
 126   }
 127   service_prefs_->SetValue(prefs::kCloudPrintUserSettings,
 128                            user_settings.DeepCopy());
 129   service_prefs_->WritePrefs();
 130
 131   if (!CreateBackend())
 132     return;
 133   DCHECK(backend_.get());
 134   user_email_ = user_email;
 135   backend_->InitializeWithRobotAuthCode(robot_auth_code, robot_email);
 136   if (client_) {
 137     client_->OnCloudPrintProxyEnabled(true);
 138   }
 139 }
 140
 141 bool CloudPrintProxy::CreateBackend() {
 142   DCHECK(CalledOnValidThread());
 143   if (backend_.get())
 144     return false;
 145
 146   settings_.InitFrom(service_prefs_);
 147
 148   // By default we don't poll for jobs when we lose XMPP connection. But this
 149   // behavior can be overridden by a preference.
 150   bool enable_job_poll =
 151     service_prefs_->GetBoolean(prefs::kCloudPrintEnableJobPoll, false);
 152
 153   gaia::OAuthClientInfo oauth_client_info;
 154   oauth_client_info.client_id =
 155     google_apis::GetOAuth2ClientID(google_apis::CLIENT_CLOUD_PRINT);
 156   oauth_client_info.client_secret =
 157     google_apis::GetOAuth2ClientSecret(google_apis::CLIENT_CLOUD_PRINT);
 158   oauth_client_info.redirect_uri = "oob";
 159   backend_.reset(new CloudPrintProxyBackend(this, settings_, oauth_client_info,
 160                                             enable_job_poll));
 161   return true;
 162 }
 163
 164 void CloudPrintProxy::UnregisterPrintersAndDisableForUser() {
 165   DCHECK(CalledOnValidThread());
 166   if (backend_.get()) {
 167     // Try getting auth and printers info from the backend.
 168     // We'll get notified in this case.
 169     backend_->UnregisterPrinters();
 170   } else {
 171     // If no backend avaialble, disable connector immidiately.
 172     DisableForUser();
 173   }
 174 }
 175
 176 void CloudPrintProxy::DisableForUser() {
 177   DCHECK(CalledOnValidThread());
 178   user_email_.clear();
 179   enabled_ = false;
 180   if (client_) {
 181     client_->OnCloudPrintProxyDisabled(true);
 182   }
 183   ShutdownBackend();
 184 }
 185
 186 void CloudPrintProxy::GetProxyInfo(CloudPrintProxyInfo* info) {
 187   info->enabled = enabled_;
 188   info->email.clear();
 189   if (enabled_)
 190     info->email = user_email();
 191   info->proxy_id = settings_.proxy_id();
 192   // If the Cloud Print service is not enabled, we may need to read the old
 193   // value of proxy_id from prefs.
 194   if (info->proxy_id.empty())
 195     info->proxy_id =
 196         service_prefs_->GetString(prefs::kCloudPrintProxyId, std::string());
 197 }
 198
 199 void CloudPrintProxy::CheckCloudPrintProxyPolicy() {
 200   g_service_process->io_thread()->message_loop_proxy()->PostTask(
 201       FROM_HERE, base::Bind(&CheckCloudPrintProxyPolicyInBrowser));
 202 }
 203
 204 void CloudPrintProxy::OnAuthenticated(
 205     const std::string& robot_oauth_refresh_token,
 206     const std::string& robot_email,
 207     const std::string& user_email) {
 208   DCHECK(CalledOnValidThread());
 209   service_prefs_->SetString(prefs::kCloudPrintRobotRefreshToken,
 210                             robot_oauth_refresh_token);
 211   service_prefs_->SetString(prefs::kCloudPrintRobotEmail,
 212                             robot_email);
 213   // If authenticating from a robot, the user email will be empty.
 214   if (!user_email.empty()) {
 215     user_email_ = user_email;
 216   }
 217   service_prefs_->SetString(prefs::kCloudPrintEmail, user_email_);
 218   enabled_ = true;
 219   DCHECK(!user_email_.empty());
 220   service_prefs_->WritePrefs();
 221   // When this switch used we don't want connector continue running, we just
 222   // need authentication.
 223   if (CommandLine::ForCurrentProcess()->HasSwitch(
 224           switches::kCloudPrintSetupProxy)) {
 225     ShutdownBackend();
 226     if (client_) {
 227       client_->OnCloudPrintProxyDisabled(false);
 228     }
 229   }
 230 }
 231
 232 void CloudPrintProxy::OnAuthenticationFailed() {
 233   DCHECK(CalledOnValidThread());
 234   // Don't disable permanently. Could be just connection issue.
 235   ShutdownBackend();
 236   if (client_) {
 237     client_->OnCloudPrintProxyDisabled(false);
 238   }
 239 }
 240
 241 void CloudPrintProxy::OnPrintSystemUnavailable() {
 242   // If the print system is unavailable, we want to shutdown the proxy and
 243   // disable it non-persistently.
 244   ShutdownBackend();
 245   if (client_) {
 246     client_->OnCloudPrintProxyDisabled(false);
 247   }
 248 }
 249
 250 void CloudPrintProxy::OnUnregisterPrinters(
 251     const std::string& auth_token,
 252     const std::list<std::string>& printer_ids) {
 253   UMA_HISTOGRAM_COUNTS_10000("CloudPrint.UnregisterPrinters",
 254                              printer_ids.size());
 255   ShutdownBackend();
 256   wipeout_.reset(new CloudPrintWipeout(this, settings_.server_url()));
 257   wipeout_->UnregisterPrinters(auth_token, printer_ids);
 258 }
 259
 260 void CloudPrintProxy::OnXmppPingUpdated(int ping_timeout) {
 261   DCHECK(CalledOnValidThread());
 262   service_prefs_->SetInt(prefs::kCloudPrintXmppPingTimeout, ping_timeout);
 263   service_prefs_->WritePrefs();
 264 }
 265
 266 void CloudPrintProxy::OnUnregisterPrintersComplete() {
 267   wipeout_.reset();
 268   // Finish disabling cloud print for this user.
 269   DisableForUser();
 270 }
 271
 272 void CloudPrintProxy::ShutdownBackend() {
 273   DCHECK(CalledOnValidThread());
 274   if (backend_.get())
 275     backend_->Shutdown();
 276   backend_.reset();
 277 }
 278
 279 }  // namespace cloud_print