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// Copyright (c) 2013 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/ui/webui/managed_user_passphrase_dialog.h"
#include <string>
#include <vector>
#include "base/bind.h"
#include "base/memory/weak_ptr.h"
#include "base/prefs/pref_service.h"
#include "base/values.h"
#include "chrome/browser/managed_mode/managed_user_passphrase.h"
#include "chrome/browser/managed_mode/managed_user_service.h"
#include "chrome/browser/managed_mode/managed_user_service_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/constrained_web_dialog_ui.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui_data_source.h"
#include "content/public/browser/web_ui_message_handler.h"
#include "grit/browser_resources.h"
#include "grit/generated_resources.h"
#include "ui/gfx/size.h"
namespace {
// Handles the message when the user entered a passphrase and clicks the Unlock
// button.
class ManagedUserPassphraseDialogMessageHandler
: public content::WebUIMessageHandler {
public:
ManagedUserPassphraseDialogMessageHandler();
virtual ~ManagedUserPassphraseDialogMessageHandler() {}
// content::WebUIMessageHandler implementation.
virtual void RegisterMessages() OVERRIDE;
private:
// Gets called from the UI with the entered passphrase as a parameter. The
// correctness of the passphrase is checked and the result is returned to the
// UI.
void CheckPassphrase(const base::ListValue* args) const;
base::WeakPtrFactory<ManagedUserPassphraseDialogMessageHandler> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(ManagedUserPassphraseDialogMessageHandler);
};
ManagedUserPassphraseDialogMessageHandler
::ManagedUserPassphraseDialogMessageHandler() : weak_factory_(this) {
}
void ManagedUserPassphraseDialogMessageHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback(
"checkPassphrase",
base::Bind(&ManagedUserPassphraseDialogMessageHandler::CheckPassphrase,
weak_factory_.GetWeakPtr()));
}
void ManagedUserPassphraseDialogMessageHandler::CheckPassphrase(
const base::ListValue* args) const {
// Extract the passphrase from the provided ListValue parameter.
const base::Value* passphrase_arg = NULL;
args->Get(0, &passphrase_arg);
std::string passphrase;
passphrase_arg->GetAsString(&passphrase);
// Get the hashed passphrase and the salt that was used to calculate it.
Profile* profile = Profile::FromWebUI(web_ui());
PrefService* pref_service = profile->GetPrefs();
std::string stored_passphrase_hash =
pref_service->GetString(prefs::kManagedModeLocalPassphrase);
std::string salt = pref_service->GetString(prefs::kManagedModeLocalSalt);
// Calculate the hash of the entered passphrase.
ManagedUserPassphrase passphrase_key_generator(salt);
std::string encoded_passphrase_hash;
passphrase_key_generator.GenerateHashFromPassphrase(passphrase,
&encoded_passphrase_hash);
// Check if the entered passphrase is correct and possibly set the managed
// user into the elevated state which for example allows to modify settings.
ManagedUserService* managed_user_service =
ManagedUserServiceFactory::GetForProfile(profile);
if (stored_passphrase_hash == encoded_passphrase_hash) {
managed_user_service->SetElevated(true);
web_ui()->CallJavascriptFunction("passphraseCorrect");
} else {
managed_user_service->SetElevated(false);
web_ui()->CallJavascriptFunction("passphraseIncorrect");
}
}
} // namespace
ManagedUserPassphraseDialog::ManagedUserPassphraseDialog(
content::WebContents* web_contents,
const PassphraseCheckedCallback& callback) : callback_(callback) {
Profile* profile =
Profile::FromBrowserContext(web_contents->GetBrowserContext());
CreateDataSource(profile);
CreateConstrainedWebDialog(profile, this, NULL, web_contents);
}
ui::ModalType ManagedUserPassphraseDialog::GetDialogModalType() const {
return ui::MODAL_TYPE_WINDOW;
}
string16 ManagedUserPassphraseDialog::GetDialogTitle() const {
return string16();
}
GURL ManagedUserPassphraseDialog::GetDialogContentURL() const {
return GURL(chrome::kChromeUIManagedUserPassphrasePageURL);
}
void ManagedUserPassphraseDialog::GetWebUIMessageHandlers(
std::vector<content::WebUIMessageHandler*>* handlers) const {
DCHECK(handlers);
// The constrained window delegate takes care of registering the handler.
// The handler is also deleted automatically.
handlers->push_back(new ManagedUserPassphraseDialogMessageHandler());
}
void ManagedUserPassphraseDialog::GetDialogSize(gfx::Size* size) const {
const int kDialogWidth = 400;
const int kDialogHeight = 310;
size->SetSize(kDialogWidth, kDialogHeight);
}
std::string ManagedUserPassphraseDialog::GetDialogArgs() const {
return std::string();
}
void ManagedUserPassphraseDialog::OnDialogClosed(
const std::string& json_retval) {
if (!callback_.is_null()) {
callback_.Run(!json_retval.empty());
callback_.Reset();
}
}
void ManagedUserPassphraseDialog::OnCloseContents(
content::WebContents* source, bool* out_close_dialog) {
}
bool ManagedUserPassphraseDialog::ShouldShowDialogTitle() const {
return false;
}
ManagedUserPassphraseDialog::~ManagedUserPassphraseDialog() {
}
void ManagedUserPassphraseDialog::CreateDataSource(Profile* profile) const {
content::WebUIDataSource* data_source = content::WebUIDataSource::Create(
chrome::kChromeUIManagedUserPassphrasePageHost);
data_source->SetDefaultResource(IDR_MANAGED_USER_PASSPHRASE_DIALOG_HTML);
data_source->AddResourcePath("managed_user_passphrase_dialog.js",
IDR_MANAGED_USER_PASSPHRASE_DIALOG_JS);
data_source->AddResourcePath("managed_user_passphrase_dialog.css",
IDR_MANAGED_USER_PASSPHRASE_DIALOG_CSS);
data_source->AddResourcePath("managed_user.png",
IDR_MANAGED_USER_PASSPHRASE_DIALOG_IMG);
data_source->AddLocalizedString("managedModePassphrasePage",
IDS_PASSPHRASE_TITLE);
data_source->AddLocalizedString("unlockPassphraseButton",
IDS_UNLOCK_PASSPHRASE_BUTTON);
data_source->AddLocalizedString("passphraseInstruction",
IDS_PASSPHRASE_INSTRUCTION);
data_source->AddLocalizedString("incorrectPassphraseWarning",
IDS_INCORRECT_PASSPHRASE_WARNING);
data_source->AddLocalizedString("cancelPassphraseButton", IDS_CANCEL);
data_source->SetJsonPath("strings.js");
data_source->SetUseJsonJSFormatV2();
content::WebUIDataSource::Add(profile, data_source);
}
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