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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/extensions/api/execute_code_function.h"
#include "chrome/browser/extensions/api/tabs/tabs_constants.h"
#include "chrome/browser/extensions/image_loader.h"
#include "chrome/browser/extensions/script_executor.h"
#include "chrome/common/extensions/api/i18n/default_locale_handler.h"
#include "chrome/common/extensions/extension_file_util.h"
#include "chrome/common/extensions/extension_messages.h"
#include "chrome/common/extensions/message_bundle.h"
#include "extensions/browser/file_reader.h"
#include "extensions/common/error_utils.h"
#include "net/base/net_util.h"
#include "ui/base/resource/resource_bundle.h"
namespace extensions {
namespace keys = tabs_constants;
using api::tabs::InjectDetails;
ExecuteCodeFunction::ExecuteCodeFunction() {
}
ExecuteCodeFunction::~ExecuteCodeFunction() {
}
void ExecuteCodeFunction::DidLoadFile(bool success,
const std::string& data) {
if (!success || !details_->file) {
DidLoadAndLocalizeFile(success, data);
return;
}
ScriptExecutor::ScriptType script_type =
ShouldInsertCSS() ? ScriptExecutor::CSS : ScriptExecutor::JAVASCRIPT;
std::string extension_id;
base::FilePath extension_path;
std::string extension_default_locale;
const Extension* extension = GetExtension();
if (extension) {
extension_id = extension->id();
extension_path = extension->path();
extension_default_locale = LocaleInfo::GetDefaultLocale(extension);
}
content::BrowserThread::PostTask(
content::BrowserThread::FILE, FROM_HERE,
base::Bind(&ExecuteCodeFunction::GetFileURLAndLocalizeCSS, this,
script_type,
data,
extension_id,
extension_path,
extension_default_locale));
}
void ExecuteCodeFunction::GetFileURLAndLocalizeCSS(
ScriptExecutor::ScriptType script_type,
const std::string& data,
const std::string& extension_id,
const base::FilePath& extension_path,
const std::string& extension_default_locale) {
std::string localized_data = data;
// Check if the file is CSS and needs localization.
if ((script_type == ScriptExecutor::CSS) &&
!extension_id.empty() &&
(data.find(MessageBundle::kMessageBegin) != std::string::npos)) {
scoped_ptr<SubstitutionMap> localization_messages(
extension_file_util::LoadMessageBundleSubstitutionMap(
extension_path, extension_id, extension_default_locale));
// We need to do message replacement on the data, so it has to be mutable.
std::string error;
MessageBundle::ReplaceMessagesWithExternalDictionary(*localization_messages,
&localized_data,
&error);
}
file_url_ = net::FilePathToFileURL(resource_.GetFilePath());
// Call back DidLoadAndLocalizeFile on the UI thread. The success parameter
// is always true, because if loading had failed, we wouldn't have had
// anything to localize.
content::BrowserThread::PostTask(
content::BrowserThread::UI, FROM_HERE,
base::Bind(&ExecuteCodeFunction::DidLoadAndLocalizeFile, this,
true, localized_data));
}
void ExecuteCodeFunction::DidLoadAndLocalizeFile(bool success,
const std::string& data) {
if (success) {
if (!Execute(data))
SendResponse(false);
} else {
// TODO(viettrungluu): bug: there's no particular reason the path should be
// UTF-8, in which case this may fail.
error_ = ErrorUtils::FormatErrorMessage(keys::kLoadFileError,
resource_.relative_path().AsUTF8Unsafe());
SendResponse(false);
}
}
bool ExecuteCodeFunction::Execute(const std::string& code_string) {
ScriptExecutor* executor = GetScriptExecutor();
if (!executor)
return false;
const Extension* extension = GetExtension();
if (!extension)
return false;
ScriptExecutor::ScriptType script_type = ScriptExecutor::JAVASCRIPT;
if (ShouldInsertCSS())
script_type = ScriptExecutor::CSS;
ScriptExecutor::FrameScope frame_scope =
details_->all_frames.get() && *details_->all_frames ?
ScriptExecutor::ALL_FRAMES :
ScriptExecutor::TOP_FRAME;
UserScript::RunLocation run_at =
UserScript::UNDEFINED;
switch (details_->run_at) {
case InjectDetails::RUN_AT_NONE:
case InjectDetails::RUN_AT_DOCUMENT_IDLE:
run_at = UserScript::DOCUMENT_IDLE;
break;
case InjectDetails::RUN_AT_DOCUMENT_START:
run_at = UserScript::DOCUMENT_START;
break;
case InjectDetails::RUN_AT_DOCUMENT_END:
run_at = UserScript::DOCUMENT_END;
break;
}
CHECK_NE(UserScript::UNDEFINED, run_at);
executor->ExecuteScript(
extension->id(),
script_type,
code_string,
frame_scope,
run_at,
ScriptExecutor::ISOLATED_WORLD,
IsWebView() ? ScriptExecutor::WEB_VIEW_PROCESS
: ScriptExecutor::DEFAULT_PROCESS,
file_url_,
user_gesture_,
has_callback() ? ScriptExecutor::JSON_SERIALIZED_RESULT
: ScriptExecutor::NO_RESULT,
base::Bind(&ExecuteCodeFunction::OnExecuteCodeFinished, this));
return true;
}
bool ExecuteCodeFunction::HasPermission() {
return true;
}
bool ExecuteCodeFunction::RunImpl() {
EXTENSION_FUNCTION_VALIDATE(Init());
if (!details_->code.get() && !details_->file.get()) {
error_ = keys::kNoCodeOrFileToExecuteError;
return false;
}
if (details_->code.get() && details_->file.get()) {
error_ = keys::kMoreThanOneValuesError;
return false;
}
if (!CanExecuteScriptOnPage())
return false;
if (details_->code.get())
return Execute(*details_->code);
if (!details_->file.get())
return false;
resource_ = GetExtension()->GetResource(*details_->file);
if (resource_.extension_root().empty() || resource_.relative_path().empty()) {
error_ = keys::kNoCodeOrFileToExecuteError;
return false;
}
int resource_id;
if (ImageLoader::IsComponentExtensionResource(
resource_.extension_root(), resource_.relative_path(),
&resource_id)) {
const ResourceBundle& rb = ResourceBundle::GetSharedInstance();
DidLoadFile(true, rb.GetRawDataResource(resource_id).as_string());
} else {
scoped_refptr<FileReader> file_reader(new FileReader(
resource_, base::Bind(&ExecuteCodeFunction::DidLoadFile, this)));
file_reader->Start();
}
return true;
}
void ExecuteCodeFunction::OnExecuteCodeFinished(
const std::string& error,
int32 on_page_id,
const GURL& on_url,
const base::ListValue& result) {
if (!error.empty())
SetError(error);
SendResponse(error.empty());
}
} // namespace extensions
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