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 "grit/generated_resources.h"
  33 #include "printing/backend/print_backend.h"
  34 #include "ui/base/l10n/l10n_util.h"
  35
  36 using content::BrowserThread;
  37
  38 CloudPrintProxyService::CloudPrintProxyService(Profile* profile)
  39     : profile_(profile),
  40       weak_factory_(this),
  41       enforcing_connector_policy_(false) {
  42 }
  43
  44 CloudPrintProxyService::~CloudPrintProxyService() {
  45 }
  46
  47 void CloudPrintProxyService::Initialize() {
  48   UMA_HISTOGRAM_ENUMERATION("CloudPrint.ServiceEvents",
  49                             ServiceProcessControl::SERVICE_EVENT_INITIALIZE,
  50                             ServiceProcessControl::SERVICE_EVENT_MAX);
  51   if (profile_->GetPrefs()->HasPrefPath(prefs::kCloudPrintEmail) &&
  52       (!profile_->GetPrefs()->GetString(prefs::kCloudPrintEmail).empty() ||
  53        !profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled))) {
  54     // If the cloud print proxy is enabled, or the policy preventing it from
  55     // being enabled is set, establish a channel with the service process and
  56     // update the status. This will check the policy when the status is sent
  57     // back.
  58     UMA_HISTOGRAM_ENUMERATION(
  59         "CloudPrint.ServiceEvents",
  60         ServiceProcessControl::SERVICE_EVENT_ENABLED_ON_LAUNCH,
  61         ServiceProcessControl::SERVICE_EVENT_MAX);
  62     RefreshStatusFromService();
  63   }
  64
  65   pref_change_registrar_.Init(profile_->GetPrefs());
  66   pref_change_registrar_.Add(
  67       prefs::kCloudPrintProxyEnabled,
  68       base::Bind(
  69           base::IgnoreResult(
  70               &CloudPrintProxyService::ApplyCloudPrintConnectorPolicy),
  71           base::Unretained(this)));
  72 }
  73
  74 void CloudPrintProxyService::RefreshStatusFromService() {
  75   InvokeServiceTask(
  76       base::Bind(&CloudPrintProxyService::RefreshCloudPrintProxyStatus,
  77                  weak_factory_.GetWeakPtr()));
  78 }
  79
  80 bool CloudPrintProxyService::EnforceCloudPrintConnectorPolicyAndQuit() {
  81   DCHECK(BrowserThread::CurrentlyOn(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   UMA_HISTOGRAM_ENUMERATION("CloudPrint.ServiceEvents",
  94                             ServiceProcessControl::SERVICE_EVENT_ENABLE,
  95                             ServiceProcessControl::SERVICE_EVENT_MAX);
  96   if (profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled)) {
  97     InvokeServiceTask(
  98         base::Bind(&CloudPrintProxyService::EnableCloudPrintProxyWithRobot,
  99                    weak_factory_.GetWeakPtr(), robot_auth_code, robot_email,
 100                    user_email, base::Owned(user_preferences.DeepCopy())));
 101   }
 102 }
 103
 104 void CloudPrintProxyService::DisableForUser() {
 105   UMA_HISTOGRAM_ENUMERATION("CloudPrint.ServiceEvents",
 106                             ServiceProcessControl::SERVICE_EVENT_DISABLE,
 107                             ServiceProcessControl::SERVICE_EVENT_MAX);
 108   InvokeServiceTask(
 109       base::Bind(&CloudPrintProxyService::DisableCloudPrintProxy,
 110                  weak_factory_.GetWeakPtr()));
 111 }
 112
 113 bool CloudPrintProxyService::ApplyCloudPrintConnectorPolicy() {
 114   if (!profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled)) {
 115     std::string email =
 116         profile_->GetPrefs()->GetString(prefs::kCloudPrintEmail);
 117     if (!email.empty()) {
 118       UMA_HISTOGRAM_ENUMERATION(
 119           "CloudPrint.ServiceEvents",
 120           ServiceProcessControl::SERVICE_EVENT_DISABLE_BY_POLICY,
 121           ServiceProcessControl::SERVICE_EVENT_MAX);
 122       DisableForUser();
 123       profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, std::string());
 124       if (enforcing_connector_policy_) {
 125         base::MessageLoop::current()->PostTask(
 126             FROM_HERE,
 127             base::Bind(&CloudPrintProxyService::RefreshCloudPrintProxyStatus,
 128                        weak_factory_.GetWeakPtr()));
 129       }
 130       return false;
 131     } else if (enforcing_connector_policy_) {
 132       base::MessageLoop::current()->PostTask(FROM_HERE,
 133                                              base::MessageLoop::QuitClosure());
 134     }
 135   }
 136   return true;
 137 }
 138
 139 void CloudPrintProxyService::GetPrintersAvalibleForRegistration(
 140       std::vector<std::string>* printers) {
 141   base::FilePath list_path(
 142       CommandLine::ForCurrentProcess()->GetSwitchValuePath(
 143           switches::kCloudPrintSetupProxy));
 144   if (!list_path.empty()) {
 145     std::string printers_json;
 146     base::ReadFileToString(list_path, &printers_json);
 147     scoped_ptr<base::Value> value(base::JSONReader::Read(printers_json));
 148     base::ListValue* list = NULL;
 149     if (value && value->GetAsList(&list) && list) {
 150       for (size_t i = 0; i < list->GetSize(); ++i) {
 151         std::string printer;
 152         if (list->GetString(i, &printer))
 153           printers->push_back(printer);
 154       }
 155     }
 156     UMA_HISTOGRAM_COUNTS_10000("CloudPrint.AvailablePrintersList",
 157                                printers->size());
 158   } else {
 159     printing::PrinterList printer_list;
 160     scoped_refptr<printing::PrintBackend> backend(
 161         printing::PrintBackend::CreateInstance(NULL));
 162     if (backend.get())
 163       backend->EnumeratePrinters(&printer_list);
 164     for (size_t i = 0; i < printer_list.size(); ++i)
 165       printers->push_back(printer_list[i].printer_name);
 166     UMA_HISTOGRAM_COUNTS_10000("CloudPrint.AvailablePrinters",
 167                                printers->size());
 168   }
 169 }
 170
 171 void CloudPrintProxyService::RefreshCloudPrintProxyStatus() {
 172   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 173   ServiceProcessControl* process_control = GetServiceProcessControl();
 174   DCHECK(process_control->IsConnected());
 175   ServiceProcessControl::CloudPrintProxyInfoHandler callback =
 176        base::Bind(&CloudPrintProxyService::ProxyInfoCallback,
 177                   base::Unretained(this));
 178   // GetCloudPrintProxyInfo takes ownership of callback.
 179   process_control->GetCloudPrintProxyInfo(callback);
 180 }
 181
 182 void CloudPrintProxyService::EnableCloudPrintProxyWithRobot(
 183     const std::string& robot_auth_code,
 184     const std::string& robot_email,
 185     const std::string& user_email,
 186     const base::DictionaryValue* user_preferences) {
 187   ServiceProcessControl* process_control = GetServiceProcessControl();
 188   DCHECK(process_control->IsConnected());
 189   process_control->Send(
 190       new ServiceMsg_EnableCloudPrintProxyWithRobot(
 191           robot_auth_code, robot_email, user_email, *user_preferences));
 192   // Assume the IPC worked.
 193   profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, user_email);
 194 }
 195
 196 void CloudPrintProxyService::DisableCloudPrintProxy() {
 197   ServiceProcessControl* process_control = GetServiceProcessControl();
 198   DCHECK(process_control->IsConnected());
 199   process_control->Send(new ServiceMsg_DisableCloudPrintProxy);
 200   // Assume the IPC worked.
 201   profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, std::string());
 202 }
 203
 204 void CloudPrintProxyService::ProxyInfoCallback(
 205     const cloud_print::CloudPrintProxyInfo& proxy_info) {
 206   proxy_id_ = proxy_info.proxy_id;
 207   profile_->GetPrefs()->SetString(
 208       prefs::kCloudPrintEmail,
 209       proxy_info.enabled ? proxy_info.email : std::string());
 210   ApplyCloudPrintConnectorPolicy();
 211 }
 212
 213 bool CloudPrintProxyService::InvokeServiceTask(const base::Closure& task) {
 214   GetServiceProcessControl()->Launch(task, base::Closure());
 215   return true;
 216 }
 217
 218 ServiceProcessControl* CloudPrintProxyService::GetServiceProcessControl() {
 219   return ServiceProcessControl::GetInstance();
 220 }