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/files/file_util.h"
  14 #include "base/json/json_reader.h"
  15 #include "base/location.h"
  16 #include "base/metrics/histogram.h"
  17 #include "base/prefs/pref_service.h"
  18 #include "base/single_thread_task_runner.h"
  19 #include "base/strings/utf_string_conversions.h"
  20 #include "base/thread_task_runner_handle.h"
  21 #include "chrome/browser/browser_process.h"
  22 #include "chrome/browser/chrome_notification_types.h"
  23 #include "chrome/browser/lifetime/application_lifetime.h"
  24 #include "chrome/browser/notifications/notification.h"
  25 #include "chrome/browser/notifications/notification_ui_manager.h"
  26 #include "chrome/browser/profiles/profile.h"
  27 #include "chrome/browser/service_process/service_process_control.h"
  28 #include "chrome/common/chrome_switches.h"
  29 #include "chrome/common/cloud_print/cloud_print_proxy_info.h"
  30 #include "chrome/common/pref_names.h"
  31 #include "chrome/common/service_messages.h"
  32 #include "content/public/browser/browser_thread.h"
  33 #include "printing/backend/print_backend.h"
  34
  35 using content::BrowserThread;
  36
  37 CloudPrintProxyService::CloudPrintProxyService(Profile* profile)
  38     : profile_(profile),
  39       weak_factory_(this) {
  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 void CloudPrintProxyService::EnableForUserWithRobot(
  81     const std::string& robot_auth_code,
  82     const std::string& robot_email,
  83     const std::string& user_email,
  84     const base::DictionaryValue& user_preferences) {
  85   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  86   UMA_HISTOGRAM_ENUMERATION("CloudPrint.ServiceEvents",
  87                             ServiceProcessControl::SERVICE_EVENT_ENABLE,
  88                             ServiceProcessControl::SERVICE_EVENT_MAX);
  89   if (profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled)) {
  90     InvokeServiceTask(
  91         base::Bind(&CloudPrintProxyService::EnableCloudPrintProxyWithRobot,
  92                    weak_factory_.GetWeakPtr(), robot_auth_code, robot_email,
  93                    user_email, base::Owned(user_preferences.DeepCopy())));
  94   }
  95 }
  96
  97 void CloudPrintProxyService::DisableForUser() {
  98   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  99   UMA_HISTOGRAM_ENUMERATION("CloudPrint.ServiceEvents",
 100                             ServiceProcessControl::SERVICE_EVENT_DISABLE,
 101                             ServiceProcessControl::SERVICE_EVENT_MAX);
 102   InvokeServiceTask(
 103       base::Bind(&CloudPrintProxyService::DisableCloudPrintProxy,
 104                  weak_factory_.GetWeakPtr()));
 105 }
 106
 107 bool CloudPrintProxyService::ApplyCloudPrintConnectorPolicy() {
 108   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 109   if (!profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled)) {
 110     std::string email =
 111         profile_->GetPrefs()->GetString(prefs::kCloudPrintEmail);
 112     if (!email.empty()) {
 113       UMA_HISTOGRAM_ENUMERATION(
 114           "CloudPrint.ServiceEvents",
 115           ServiceProcessControl::SERVICE_EVENT_DISABLE_BY_POLICY,
 116           ServiceProcessControl::SERVICE_EVENT_MAX);
 117       DisableForUser();
 118       profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, std::string());
 119       return false;
 120     }
 121   }
 122   return true;
 123 }
 124
 125 void CloudPrintProxyService::GetPrinters(const PrintersCallback& callback) {
 126   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 127   if (!profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled))
 128     return;
 129
 130   base::FilePath list_path(
 131       base::CommandLine::ForCurrentProcess()->GetSwitchValuePath(
 132           switches::kCloudPrintSetupProxy));
 133   if (!list_path.empty()) {
 134     std::string printers_json;
 135     base::ReadFileToString(list_path, &printers_json);
 136     scoped_ptr<base::Value> value = base::JSONReader::Read(printers_json);
 137     base::ListValue* list = NULL;
 138     std::vector<std::string> printers;
 139     if (value && value->GetAsList(&list) && list) {
 140       for (size_t i = 0; i < list->GetSize(); ++i) {
 141         std::string printer;
 142         if (list->GetString(i, &printer))
 143           printers.push_back(printer);
 144       }
 145     }
 146     UMA_HISTOGRAM_COUNTS_10000("CloudPrint.AvailablePrintersList",
 147                                printers.size());
 148     base::ThreadTaskRunnerHandle::Get()->PostTask(
 149         FROM_HERE, base::Bind(callback, printers));
 150   } else {
 151     InvokeServiceTask(
 152         base::Bind(&CloudPrintProxyService::GetCloudPrintProxyPrinters,
 153                    weak_factory_.GetWeakPtr(),
 154                    callback));
 155   }
 156 }
 157
 158 void CloudPrintProxyService::GetCloudPrintProxyPrinters(
 159     const PrintersCallback& callback) {
 160   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 161   ServiceProcessControl* process_control = GetServiceProcessControl();
 162   DCHECK(process_control->IsConnected());
 163   process_control->GetPrinters(callback);
 164 }
 165
 166 void CloudPrintProxyService::RefreshCloudPrintProxyStatus() {
 167   DCHECK_CURRENTLY_ON(BrowserThread::UI);
 168   ServiceProcessControl* process_control = GetServiceProcessControl();
 169   DCHECK(process_control->IsConnected());
 170   ServiceProcessControl::CloudPrintProxyInfoCallback callback = base::Bind(
 171       &CloudPrintProxyService::ProxyInfoCallback, base::Unretained(this));
 172   process_control->GetCloudPrintProxyInfo(callback);
 173 }
 174
 175 void CloudPrintProxyService::EnableCloudPrintProxyWithRobot(
 176     const std::string& robot_auth_code,
 177     const std::string& robot_email,
 178     const std::string& user_email,
 179     const base::DictionaryValue* user_preferences) {
 180   ServiceProcessControl* process_control = GetServiceProcessControl();
 181   DCHECK(process_control->IsConnected());
 182   process_control->Send(
 183       new ServiceMsg_EnableCloudPrintProxyWithRobot(
 184           robot_auth_code, robot_email, user_email, *user_preferences));
 185   // Assume the IPC worked.
 186   profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, user_email);
 187 }
 188
 189 void CloudPrintProxyService::DisableCloudPrintProxy() {
 190   ServiceProcessControl* process_control = GetServiceProcessControl();
 191   DCHECK(process_control->IsConnected());
 192   process_control->Send(new ServiceMsg_DisableCloudPrintProxy);
 193   // Assume the IPC worked.
 194   profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, std::string());
 195 }
 196
 197 void CloudPrintProxyService::ProxyInfoCallback(
 198     const cloud_print::CloudPrintProxyInfo& proxy_info) {
 199   proxy_id_ = proxy_info.proxy_id;
 200   profile_->GetPrefs()->SetString(
 201       prefs::kCloudPrintEmail,
 202       proxy_info.enabled ? proxy_info.email : std::string());
 203   ApplyCloudPrintConnectorPolicy();
 204 }
 205
 206 bool CloudPrintProxyService::InvokeServiceTask(const base::Closure& task) {
 207   GetServiceProcessControl()->Launch(task, base::Closure());
 208   return true;
 209 }
 210
 211 ServiceProcessControl* CloudPrintProxyService::GetServiceProcessControl() {
 212   return ServiceProcessControl::GetInstance();
 213 }