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// Copyright (c) 2010 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/views/external_protocol_dialog.h"
#include "app/l10n_util.h"
#include "app/message_box_flags.h"
#include "base/metrics/histogram.h"
#include "base/string_util.h"
#include "base/thread.h"
#include "base/utf_string_conversions.h"
#include "base/win/registry.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/external_protocol_handler.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/tab_contents/tab_util.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "views/controls/message_box_view.h"
#include "views/window/window.h"
namespace {
const int kMessageWidth = 400;
} // namespace
///////////////////////////////////////////////////////////////////////////////
// ExternalProtocolHandler
// static
void ExternalProtocolHandler::RunExternalProtocolDialog(
const GURL& url, int render_process_host_id, int routing_id) {
std::wstring command =
ExternalProtocolDialog::GetApplicationForProtocol(url);
if (command.empty()) {
// ShellExecute won't do anything. Don't bother warning the user.
return;
}
TabContents* tab_contents = tab_util::GetTabContentsByID(
render_process_host_id, routing_id);
DCHECK(tab_contents);
ExternalProtocolDialog* handler =
new ExternalProtocolDialog(tab_contents, url, command);
}
///////////////////////////////////////////////////////////////////////////////
// ExternalProtocolDialog
ExternalProtocolDialog::~ExternalProtocolDialog() {
}
//////////////////////////////////////////////////////////////////////////////
// ExternalProtocolDialog, views::DialogDelegate implementation:
int ExternalProtocolDialog::GetDefaultDialogButton() const {
return MessageBoxFlags::DIALOGBUTTON_CANCEL;
}
std::wstring ExternalProtocolDialog::GetDialogButtonLabel(
MessageBoxFlags::DialogButton button) const {
if (button == MessageBoxFlags::DIALOGBUTTON_OK)
return l10n_util::GetString(IDS_EXTERNAL_PROTOCOL_OK_BUTTON_TEXT);
else
return l10n_util::GetString(IDS_EXTERNAL_PROTOCOL_CANCEL_BUTTON_TEXT);
}
std::wstring ExternalProtocolDialog::GetWindowTitle() const {
return l10n_util::GetString(IDS_EXTERNAL_PROTOCOL_TITLE);
}
void ExternalProtocolDialog::DeleteDelegate() {
delete this;
}
bool ExternalProtocolDialog::Cancel() {
// We also get called back here if the user closes the dialog or presses
// escape. In these cases it would be preferable to ignore the state of the
// check box but MessageBox doesn't distinguish this from pressing the cancel
// button.
if (message_box_view_->IsCheckBoxSelected()) {
ExternalProtocolHandler::SetBlockState(
url_.scheme(), ExternalProtocolHandler::BLOCK);
}
// Returning true closes the dialog.
return true;
}
bool ExternalProtocolDialog::Accept() {
// We record how long it takes the user to accept an external protocol. If
// users start accepting these dialogs too quickly, we should worry about
// clickjacking.
UMA_HISTOGRAM_LONG_TIMES("clickjacking.launch_url",
base::TimeTicks::Now() - creation_time_);
if (message_box_view_->IsCheckBoxSelected()) {
ExternalProtocolHandler::SetBlockState(
url_.scheme(), ExternalProtocolHandler::DONT_BLOCK);
}
ExternalProtocolHandler::LaunchUrlWithoutSecurityCheck(url_);
// Returning true closes the dialog.
return true;
}
views::View* ExternalProtocolDialog::GetContentsView() {
return message_box_view_;
}
///////////////////////////////////////////////////////////////////////////////
// ExternalProtocolDialog, private:
ExternalProtocolDialog::ExternalProtocolDialog(TabContents* tab_contents,
const GURL& url,
const std::wstring& command)
: tab_contents_(tab_contents),
url_(url),
creation_time_(base::TimeTicks::Now()) {
const int kMaxUrlWithoutSchemeSize = 256;
const int kMaxCommandSize = 256;
std::wstring elided_url_without_scheme;
std::wstring elided_command;
ElideString(ASCIIToWide(url.possibly_invalid_spec()),
kMaxUrlWithoutSchemeSize, &elided_url_without_scheme);
ElideString(command, kMaxCommandSize, &elided_command);
std::wstring message_text = l10n_util::GetStringF(
IDS_EXTERNAL_PROTOCOL_INFORMATION,
ASCIIToWide(url.scheme() + ":"),
elided_url_without_scheme) + L"\n\n";
message_text += l10n_util::GetStringF(
IDS_EXTERNAL_PROTOCOL_APPLICATION_TO_LAUNCH, elided_command) + L"\n\n";
message_text += l10n_util::GetString(IDS_EXTERNAL_PROTOCOL_WARNING);
message_box_view_ = new MessageBoxView(MessageBoxFlags::kIsConfirmMessageBox,
message_text,
std::wstring(),
kMessageWidth);
message_box_view_->SetCheckBoxLabel(
l10n_util::GetString(IDS_EXTERNAL_PROTOCOL_CHECKBOX_TEXT));
HWND root_hwnd;
if (tab_contents_) {
root_hwnd = GetAncestor(tab_contents_->GetContentNativeView(), GA_ROOT);
} else {
// Dialog is top level if we don't have a tab_contents associated with us.
root_hwnd = NULL;
}
views::Window::CreateChromeWindow(root_hwnd, gfx::Rect(), this)->Show();
}
// static
std::wstring ExternalProtocolDialog::GetApplicationForProtocol(
const GURL& url) {
std::wstring url_spec = ASCIIToWide(url.possibly_invalid_spec());
std::wstring cmd_key_path =
ASCIIToWide(url.scheme() + "\\shell\\open\\command");
base::win::RegKey cmd_key(HKEY_CLASSES_ROOT, cmd_key_path.c_str(), KEY_READ);
size_t split_offset = url_spec.find(L':');
if (split_offset == std::wstring::npos)
return std::wstring();
std::wstring parameters = url_spec.substr(split_offset + 1,
url_spec.length() - 1);
std::wstring application_to_launch;
if (cmd_key.ReadValue(NULL, &application_to_launch)) {
ReplaceSubstringsAfterOffset(&application_to_launch, 0, L"%1", parameters);
return application_to_launch;
} else {
return std::wstring();
}
}
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