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// Copyright 2014 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.
#ifndef EXTENSIONS_BROWSER_API_EXECUTE_CODE_FUNCTION_IMPL_H_
#define EXTENSIONS_BROWSER_API_EXECUTE_CODE_FUNCTION_IMPL_H_
#include "extensions/browser/api/execute_code_function.h"
#include "extensions/browser/component_extension_resource_manager.h"
#include "extensions/browser/extension_api_frame_id_map.h"
#include "extensions/browser/extensions_browser_client.h"
#include "extensions/browser/file_reader.h"
#include "extensions/common/error_utils.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/file_util.h"
#include "extensions/common/manifest_constants.h"
#include "extensions/common/message_bundle.h"
#include "net/base/filename_util.h"
#include "ui/base/resource/resource_bundle.h"
namespace {
// Error messages
const char kNoCodeOrFileToExecuteError[] = "No source code or file specified.";
const char kMoreThanOneValuesError[] =
"Code and file should not be specified "
"at the same time in the second argument.";
const char kBadFileEncodingError[] =
"Could not load file '*' for content script. It isn't UTF-8 encoded.";
const char kLoadFileError[] = "Failed to load file: \"*\". ";
}
namespace extensions {
using api::extension_types::InjectDetails;
ExecuteCodeFunction::ExecuteCodeFunction() {
}
ExecuteCodeFunction::~ExecuteCodeFunction() {
}
void ExecuteCodeFunction::DidLoadFile(bool success, const std::string& data) {
if (!success || !details_->file) {
DidLoadAndLocalizeFile(
resource_.relative_path().AsUTF8Unsafe(), 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;
if (extension()) {
extension_id = extension()->id();
extension_path = extension()->path();
extension()->manifest()->GetString(manifest_keys::kDefaultLocale,
&extension_default_locale);
}
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(
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,
resource_.relative_path().AsUTF8Unsafe(),
true,
localized_data));
}
void ExecuteCodeFunction::DidLoadAndLocalizeFile(const std::string& file,
bool success,
const std::string& data) {
if (success) {
if (!base::IsStringUTF8(data)) {
error_ = ErrorUtils::FormatErrorMessage(kBadFileEncodingError, file);
SendResponse(false);
} else 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(kLoadFileError, file);
SendResponse(false);
}
}
bool ExecuteCodeFunction::Execute(const std::string& code_string) {
ScriptExecutor* executor = GetScriptExecutor();
if (!executor)
return false;
if (!extension() && !IsWebView())
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::INCLUDE_SUB_FRAMES
: ScriptExecutor::SINGLE_FRAME;
int frame_id = details_->frame_id.get() ? *details_->frame_id
: ExtensionApiFrameIdMap::kTopFrameId;
ScriptExecutor::MatchAboutBlank match_about_blank =
details_->match_about_blank.get() && *details_->match_about_blank
? ScriptExecutor::MATCH_ABOUT_BLANK
: ScriptExecutor::DONT_MATCH_ABOUT_BLANK;
UserScript::RunLocation run_at = UserScript::UNDEFINED;
switch (details_->run_at) {
case api::extension_types::RUN_AT_NONE:
case api::extension_types::RUN_AT_DOCUMENT_IDLE:
run_at = UserScript::DOCUMENT_IDLE;
break;
case api::extension_types::RUN_AT_DOCUMENT_START:
run_at = UserScript::DOCUMENT_START;
break;
case api::extension_types::RUN_AT_DOCUMENT_END:
run_at = UserScript::DOCUMENT_END;
break;
}
CHECK_NE(UserScript::UNDEFINED, run_at);
executor->ExecuteScript(
host_id_, script_type, code_string, frame_scope, frame_id,
match_about_blank, run_at, ScriptExecutor::ISOLATED_WORLD,
IsWebView() ? ScriptExecutor::WEB_VIEW_PROCESS
: ScriptExecutor::DEFAULT_PROCESS,
GetWebViewSrc(), 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::RunAsync() {
EXTENSION_FUNCTION_VALIDATE(Init());
if (!details_->code.get() && !details_->file.get()) {
error_ = kNoCodeOrFileToExecuteError;
return false;
}
if (details_->code.get() && details_->file.get()) {
error_ = kMoreThanOneValuesError;
return false;
}
if (!CanExecuteScriptOnPage())
return false;
if (details_->code.get())
return Execute(*details_->code);
if (!details_->file.get())
return false;
return LoadFile(*details_->file);
}
bool ExecuteCodeFunction::LoadFile(const std::string& file) {
resource_ = extension()->GetResource(file);
if (resource_.extension_root().empty() || resource_.relative_path().empty()) {
error_ = kNoCodeOrFileToExecuteError;
return false;
}
int resource_id;
const ComponentExtensionResourceManager*
component_extension_resource_manager =
ExtensionsBrowserClient::Get()
->GetComponentExtensionResourceManager();
if (component_extension_resource_manager &&
component_extension_resource_manager->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,
const GURL& on_url,
const base::ListValue& result) {
if (!error.empty())
SetError(error);
SendResponse(error.empty());
}
} // namespace extensions
#endif // EXTENSIONS_BROWSER_API_EXECUTE_CODE_FUNCTION_IMPL_H_
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