src/chrome/browser/printing/cloud_print/cloud_print_proxy_service.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/browser/printing/cloud_print/cloud_print_proxy_service.h"
   6
   7 #include <stack>
   8 #include <vector>
   9
  10 #include "base/bind.h"
  11 #include "base/bind_helpers.h"
  12 #include "base/command_line.h"
  13 #include "base/file_util.h"
  14 #include "base/json/json_reader.h"
  15 #include "base/message_loop/message_loop.h"
  16 #include "base/metrics/histogram.h"
  17 #include "base/prefs/pref_service.h"
  18 #include "base/strings/utf_string_conversions.h"
  19 #include "chrome/browser/browser_process.h"
  20 #include "chrome/browser/chrome_notification_types.h"
  21 #include "chrome/browser/lifetime/application_lifetime.h"
  22 #include "chrome/browser/notifications/desktop_notification_service.h"
  23 #include "chrome/browser/notifications/notification.h"
  24 #include "chrome/browser/notifications/notification_ui_manager.h"
  25 #include "chrome/browser/profiles/profile.h"
  26 #include "chrome/browser/service_process/service_process_control.h"
  27 #include "chrome/common/chrome_switches.h"
  28 #include "chrome/common/cloud_print/cloud_print_proxy_info.h"
  29 #include "chrome/common/pref_names.h"
  30 #include "chrome/common/service_messages.h"
  31 #include "content/public/browser/browser_thread.h"
  32 #include "printing/backend/print_backend.h"
  33
  34 using content::BrowserThread;
  35
  36 CloudPrintProxyService::CloudPrintProxyService(Profile* profile)
  37     : profile_(profile),
  38       weak_factory_(this),
  39       enforcing_connector_policy_(false) {
  40 }
  41
  42 CloudPrintProxyService::~CloudPrintProxyService() {
  43 }
  44
  45 void CloudPrintProxyService::Initialize() {
  46   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  47   UMA_HISTOGRAM_ENUMERATION("CloudPrint.ServiceEvents",
  48                             ServiceProcessControl::SERVICE_EVENT_INITIALIZE,
  49                             ServiceProcessControl::SERVICE_EVENT_MAX);
  50   if (profile_->GetPrefs()->HasPrefPath(prefs::kCloudPrintEmail) &&
  51       (!profile_->GetPrefs()->GetString(prefs::kCloudPrintEmail).empty() ||
  52        !profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled))) {
  53     // If the cloud print proxy is enabled, or the policy preventing it from
  54     // being enabled is set, establish a channel with the service process and
  55     // update the status. This will check the policy when the status is sent
  56     // back.
  57     UMA_HISTOGRAM_ENUMERATION(
  58         "CloudPrint.ServiceEvents",
  59         ServiceProcessControl::SERVICE_EVENT_ENABLED_ON_LAUNCH,
  60         ServiceProcessControl::SERVICE_EVENT_MAX);
  61     RefreshStatusFromService();
  62   }
  63
  64   pref_change_registrar_.Init(profile_->GetPrefs());
  65   pref_change_registrar_.Add(
  66       prefs::kCloudPrintProxyEnabled,
  67       base::Bind(
  68           base::IgnoreResult(
  69               &CloudPrintProxyService::ApplyCloudPrintConnectorPolicy),
  70           base::Unretained(this)));
  71 }
  72
  73 void CloudPrintProxyService::RefreshStatusFromService() {
  74   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  75   InvokeServiceTask(
  76       base::Bind(&CloudPrintProxyService::RefreshCloudPrintProxyStatus,
  77                  weak_factory_.GetWeakPtr()));
  78 }
  79
  80 bool CloudPrintProxyService::EnforceCloudPrintConnectorPolicyAndQuit() {
  81   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  82   enforcing_connector_policy_ = true;
  83   if (ApplyCloudPrintConnectorPolicy())
  84     return true;
  85   return false;
  86 }
  87
  88 void CloudPrintProxyService::EnableForUserWithRobot(
  89     const std::string& robot_auth_code,
  90     const std::string& robot_email,
  91     const std::string& user_email,
  92     const base::DictionaryValue& user_preferences) {
  93   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  94   UMA_HISTOGRAM_ENUMERATION("CloudPrint.ServiceEvents",
  95                             ServiceProcessControl::SERVICE_EVENT_ENABLE,
  96                             ServiceProcessControl::SERVICE_EVENT_MAX);
  97   if (profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled)) {
  98     InvokeServiceTask(
  99         base::Bind(&CloudPrintProxyService::EnableCloudPrintProxyWithRobot,
 100                    weak_factory_.GetWeakPtr(), robot_auth_code, robot_email,
 101                    user_email, base::Owned(user_preferences.DeepCopy())));
 102   }
 103 }
 104
 105 void CloudPrintProxyService::DisableForUser() {
 106   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 107   UMA_HISTOGRAM_ENUMERATION("CloudPrint.ServiceEvents",
 108                             ServiceProcessControl::SERVICE_EVENT_DISABLE,
 109                             ServiceProcessControl::SERVICE_EVENT_MAX);
 110   InvokeServiceTask(
 111       base::Bind(&CloudPrintProxyService::DisableCloudPrintProxy,
 112                  weak_factory_.GetWeakPtr()));
 113 }
 114
 115 bool CloudPrintProxyService::ApplyCloudPrintConnectorPolicy() {
 116   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 117   if (!profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled)) {
 118     std::string email =
 119         profile_->GetPrefs()->GetString(prefs::kCloudPrintEmail);
 120     if (!email.empty()) {
 121       UMA_HISTOGRAM_ENUMERATION(
 122           "CloudPrint.ServiceEvents",
 123           ServiceProcessControl::SERVICE_EVENT_DISABLE_BY_POLICY,
 124           ServiceProcessControl::SERVICE_EVENT_MAX);
 125       DisableForUser();
 126       profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, std::string());
 127       if (enforcing_connector_policy_) {
 128         base::MessageLoop::current()->PostTask(
 129             FROM_HERE,
 130             base::Bind(&CloudPrintProxyService::RefreshCloudPrintProxyStatus,
 131                        weak_factory_.GetWeakPtr()));
 132       }
 133       return false;
 134     } else if (enforcing_connector_policy_) {
 135       base::MessageLoop::current()->PostTask(FROM_HERE,
 136                                              base::MessageLoop::QuitClosure());
 137     }
 138   }
 139   return true;
 140 }
 141
 142 void CloudPrintProxyService::GetPrinters(const PrintersCallback& callback) {
 143   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 144   if (!profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled))
 145     return;
 146
 147   base::FilePath list_path(
 148       CommandLine::ForCurrentProcess()->GetSwitchValuePath(
 149           switches::kCloudPrintSetupProxy));
 150   if (!list_path.empty()) {
 151     std::string printers_json;
 152     base::ReadFileToString(list_path, &printers_json);
 153     scoped_ptr<base::Value> value(base::JSONReader::Read(printers_json));
 154     base::ListValue* list = NULL;
 155     std::vector<std::string> printers;
 156     if (value && value->GetAsList(&list) && list) {
 157       for (size_t i = 0; i < list->GetSize(); ++i) {
 158         std::string printer;
 159         if (list->GetString(i, &printer))
 160           printers.push_back(printer);
 161       }
 162     }
 163     UMA_HISTOGRAM_COUNTS_10000("CloudPrint.AvailablePrintersList",
 164                                printers.size());
 165     base::MessageLoop::current()->PostTask(FROM_HERE,
 166                                            base::Bind(callback, printers));
 167   } else {
 168     InvokeServiceTask(
 169         base::Bind(&CloudPrintProxyService::GetCloudPrintProxyPrinters,
 170                    weak_factory_.GetWeakPtr(),
 171                    callback));
 172   }
 173 }
 174
 175 void CloudPrintProxyService::GetCloudPrintProxyPrinters(
 176     const PrintersCallback& callback) {
 177   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 178   ServiceProcessControl* process_control = GetServiceProcessControl();
 179   DCHECK(process_control->IsConnected());
 180   process_control->GetPrinters(callback);
 181 }
 182
 183 void CloudPrintProxyService::RefreshCloudPrintProxyStatus() {
 184   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 185   ServiceProcessControl* process_control = GetServiceProcessControl();
 186   DCHECK(process_control->IsConnected());
 187   ServiceProcessControl::CloudPrintProxyInfoCallback callback = base::Bind(
 188       &CloudPrintProxyService::ProxyInfoCallback, base::Unretained(this));
 189   process_control->GetCloudPrintProxyInfo(callback);
 190 }
 191
 192 void CloudPrintProxyService::EnableCloudPrintProxyWithRobot(
 193     const std::string& robot_auth_code,
 194     const std::string& robot_email,
 195     const std::string& user_email,
 196     const base::DictionaryValue* user_preferences) {
 197   ServiceProcessControl* process_control = GetServiceProcessControl();
 198   DCHECK(process_control->IsConnected());
 199   process_control->Send(
 200       new ServiceMsg_EnableCloudPrintProxyWithRobot(
 201           robot_auth_code, robot_email, user_email, *user_preferences));
 202   // Assume the IPC worked.
 203   profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, user_email);
 204 }
 205
 206 void CloudPrintProxyService::DisableCloudPrintProxy() {
 207   ServiceProcessControl* process_control = GetServiceProcessControl();
 208   DCHECK(process_control->IsConnected());
 209   process_control->Send(new ServiceMsg_DisableCloudPrintProxy);
 210   // Assume the IPC worked.
 211   profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, std::string());
 212 }
 213
 214 void CloudPrintProxyService::ProxyInfoCallback(
 215     const cloud_print::CloudPrintProxyInfo& proxy_info) {
 216   proxy_id_ = proxy_info.proxy_id;
 217   profile_->GetPrefs()->SetString(
 218       prefs::kCloudPrintEmail,
 219       proxy_info.enabled ? proxy_info.email : std::string());
 220   ApplyCloudPrintConnectorPolicy();
 221 }
 222
 223 bool CloudPrintProxyService::InvokeServiceTask(const base::Closure& task) {
 224   GetServiceProcessControl()->Launch(task, base::Closure());
 225   return true;
 226 }
 227
 228 ServiceProcessControl* CloudPrintProxyService::GetServiceProcessControl() {
 229   return ServiceProcessControl::GetInstance();
 230 }