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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
#include <stack>
#include <vector>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/file_util.h"
#include "base/json/json_reader.h"
#include "base/message_loop/message_loop.h"
#include "base/prefs/pref_service.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/lifetime/application_lifetime.h"
#include "chrome/browser/notifications/desktop_notification_service.h"
#include "chrome/browser/notifications/notification.h"
#include "chrome/browser/notifications/notification_ui_manager.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/service/service_process_control.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/cloud_print/cloud_print_proxy_info.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/service_messages.h"
#include "content/public/browser/browser_thread.h"
#include "grit/generated_resources.h"
#include "printing/backend/print_backend.h"
#include "ui/base/l10n/l10n_util.h"
using content::BrowserThread;
CloudPrintProxyService::CloudPrintProxyService(Profile* profile)
: profile_(profile),
weak_factory_(this),
enforcing_connector_policy_(false) {
}
CloudPrintProxyService::~CloudPrintProxyService() {
}
void CloudPrintProxyService::Initialize() {
if (profile_->GetPrefs()->HasPrefPath(prefs::kCloudPrintEmail) &&
(!profile_->GetPrefs()->GetString(prefs::kCloudPrintEmail).empty() ||
!profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled))) {
// If the cloud print proxy is enabled, or the policy preventing it from
// being enabled is set, establish a channel with the service process and
// update the status. This will check the policy when the status is sent
// back.
RefreshStatusFromService();
}
pref_change_registrar_.Init(profile_->GetPrefs());
pref_change_registrar_.Add(
prefs::kCloudPrintProxyEnabled,
base::Bind(
base::IgnoreResult(
&CloudPrintProxyService::ApplyCloudPrintConnectorPolicy),
base::Unretained(this)));
}
void CloudPrintProxyService::RefreshStatusFromService() {
InvokeServiceTask(
base::Bind(&CloudPrintProxyService::RefreshCloudPrintProxyStatus,
weak_factory_.GetWeakPtr()));
}
bool CloudPrintProxyService::EnforceCloudPrintConnectorPolicyAndQuit() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
enforcing_connector_policy_ = true;
if (ApplyCloudPrintConnectorPolicy())
return true;
return false;
}
void CloudPrintProxyService::EnableForUserWithRobot(
const std::string& robot_auth_code,
const std::string& robot_email,
const std::string& user_email,
const base::DictionaryValue& user_preferences) {
if (profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled)) {
InvokeServiceTask(
base::Bind(&CloudPrintProxyService::EnableCloudPrintProxyWithRobot,
weak_factory_.GetWeakPtr(), robot_auth_code, robot_email,
user_email, base::Owned(user_preferences.DeepCopy())));
}
}
void CloudPrintProxyService::DisableForUser() {
InvokeServiceTask(
base::Bind(&CloudPrintProxyService::DisableCloudPrintProxy,
weak_factory_.GetWeakPtr()));
}
bool CloudPrintProxyService::ApplyCloudPrintConnectorPolicy() {
if (!profile_->GetPrefs()->GetBoolean(prefs::kCloudPrintProxyEnabled)) {
std::string email =
profile_->GetPrefs()->GetString(prefs::kCloudPrintEmail);
if (!email.empty()) {
DisableForUser();
profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, std::string());
if (enforcing_connector_policy_) {
base::MessageLoop::current()->PostTask(
FROM_HERE,
base::Bind(&CloudPrintProxyService::RefreshCloudPrintProxyStatus,
weak_factory_.GetWeakPtr()));
}
return false;
} else if (enforcing_connector_policy_) {
base::MessageLoop::current()->PostTask(FROM_HERE,
base::MessageLoop::QuitClosure());
}
}
return true;
}
void CloudPrintProxyService::GetPrintersAvalibleForRegistration(
std::vector<std::string>* printers) {
base::FilePath list_path(
CommandLine::ForCurrentProcess()->GetSwitchValuePath(
switches::kCloudPrintSetupProxy));
if (!list_path.empty()) {
std::string printers_json;
base::ReadFileToString(list_path, &printers_json);
scoped_ptr<Value> value(base::JSONReader::Read(printers_json));
base::ListValue* list = NULL;
if (value && value->GetAsList(&list) && list) {
for (size_t i = 0; i < list->GetSize(); ++i) {
std::string printer;
if (list->GetString(i, &printer))
printers->push_back(printer);
}
}
} else {
printing::PrinterList printer_list;
scoped_refptr<printing::PrintBackend> backend(
printing::PrintBackend::CreateInstance(NULL));
if (backend.get())
backend->EnumeratePrinters(&printer_list);
for (size_t i = 0; i < printer_list.size(); ++i)
printers->push_back(printer_list[i].printer_name);
}
}
void CloudPrintProxyService::RefreshCloudPrintProxyStatus() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
ServiceProcessControl* process_control = GetServiceProcessControl();
DCHECK(process_control->IsConnected());
ServiceProcessControl::CloudPrintProxyInfoHandler callback =
base::Bind(&CloudPrintProxyService::ProxyInfoCallback,
base::Unretained(this));
// GetCloudPrintProxyInfo takes ownership of callback.
process_control->GetCloudPrintProxyInfo(callback);
}
void CloudPrintProxyService::EnableCloudPrintProxyWithRobot(
const std::string& robot_auth_code,
const std::string& robot_email,
const std::string& user_email,
const base::DictionaryValue* user_preferences) {
ServiceProcessControl* process_control = GetServiceProcessControl();
DCHECK(process_control->IsConnected());
process_control->Send(
new ServiceMsg_EnableCloudPrintProxyWithRobot(
robot_auth_code, robot_email, user_email, *user_preferences));
// Assume the IPC worked.
profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, user_email);
}
void CloudPrintProxyService::DisableCloudPrintProxy() {
ServiceProcessControl* process_control = GetServiceProcessControl();
DCHECK(process_control->IsConnected());
process_control->Send(new ServiceMsg_DisableCloudPrintProxy);
// Assume the IPC worked.
profile_->GetPrefs()->SetString(prefs::kCloudPrintEmail, std::string());
}
void CloudPrintProxyService::ProxyInfoCallback(
const cloud_print::CloudPrintProxyInfo& proxy_info) {
proxy_id_ = proxy_info.proxy_id;
profile_->GetPrefs()->SetString(
prefs::kCloudPrintEmail,
proxy_info.enabled ? proxy_info.email : std::string());
ApplyCloudPrintConnectorPolicy();
}
bool CloudPrintProxyService::InvokeServiceTask(const base::Closure& task) {
GetServiceProcessControl()->Launch(task, base::Closure());
return true;
}
ServiceProcessControl* CloudPrintProxyService::GetServiceProcessControl() {
return ServiceProcessControl::GetInstance();
}
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