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// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cobalt/debug/debug_script_runner.h"
#include "base/bind.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/path_service.h"
#include "base/stringprintf.h"
#include "cobalt/base/cobalt_paths.h"
#include "cobalt/script/source_code.h"
namespace cobalt {
namespace debug {
namespace {
const char kContentDir[] = "cobalt/debug/backend";
const char kObjectIdentifier[] = "devtoolsBackend";
} // namespace
DebugScriptRunner::DebugScriptRunner(
script::GlobalEnvironment* global_environment,
const dom::CspDelegate* csp_delegate,
const OnEventCallback& on_event_callback)
: global_environment_(global_environment),
csp_delegate_(csp_delegate),
on_event_callback_(on_event_callback) {
// Bind this object to the global object so it can persist state and be
// accessed from any of the debug components.
global_environment_->Bind(kObjectIdentifier, make_scoped_refptr(this));
}
base::optional<std::string> DebugScriptRunner::CreateRemoteObject(
const script::ValueHandleHolder* object, const std::string& params) {
// Callback function should have been set by runtime.js.
DCHECK(create_remote_object_callback_);
CreateRemoteObjectCallback::ReturnValue result =
create_remote_object_callback_->value().Run(object, params);
if (result.exception) {
DLOG(WARNING) << "Exception creating remote object.";
return base::nullopt;
} else {
return result.result;
}
}
bool DebugScriptRunner::RunCommand(const std::string& command,
const std::string& json_params,
std::string* json_result) {
std::string script = base::StringPrintf("%s.%s(%s);", kObjectIdentifier,
command.c_str(), json_params.c_str());
return EvaluateScript(script, json_result);
}
bool DebugScriptRunner::RunScriptFile(const std::string& filename) {
std::string result;
bool success = EvaluateScriptFile(filename, &result);
if (!success) {
DLOG(WARNING) << "Failed to run script file " << filename << ": " << result;
}
return success;
}
bool DebugScriptRunner::EvaluateScript(const std::string& js_code,
std::string* result) {
DCHECK(global_environment_);
DCHECK(result);
scoped_refptr<script::SourceCode> source_code =
script::SourceCode::CreateSourceCode(js_code, GetInlineSourceLocation());
ForceEnableEval();
bool succeeded = global_environment_->EvaluateScript(
source_code, false /*mute_errors*/, result);
SetEvalAllowedFromCsp();
return succeeded;
}
bool DebugScriptRunner::EvaluateScriptFile(const std::string& filename,
std::string* result) {
DCHECK(result);
FilePath file_path;
PathService::Get(paths::DIR_COBALT_WEB_ROOT, &file_path);
file_path = file_path.AppendASCII(kContentDir);
file_path = file_path.AppendASCII(filename);
std::string script;
if (!file_util::ReadFileToString(file_path, &script)) {
DLOG(WARNING) << "Cannot read file: " << file_path.value();
return false;
}
return EvaluateScript(script, result);
}
void DebugScriptRunner::SendEvent(const std::string& method,
const base::optional<std::string>& params) {
on_event_callback_.Run(method, params);
}
void DebugScriptRunner::ForceEnableEval() {
global_environment_->EnableEval();
global_environment_->SetReportEvalCallback(base::Closure());
}
void DebugScriptRunner::SetEvalAllowedFromCsp() {
std::string eval_disabled_message;
bool allow_eval = csp_delegate_->AllowEval(&eval_disabled_message);
if (allow_eval) {
global_environment_->EnableEval();
} else {
global_environment_->DisableEval(eval_disabled_message);
}
global_environment_->SetReportEvalCallback(base::Bind(
&dom::CspDelegate::ReportEval, base::Unretained(csp_delegate_)));
}
const DebugScriptRunner::CreateRemoteObjectCallbackHolder*
DebugScriptRunner::create_remote_object_callback() {
if (create_remote_object_callback_) {
return &(create_remote_object_callback_->referenced_value());
} else {
return NULL;
}
}
void DebugScriptRunner::set_create_remote_object_callback(
const CreateRemoteObjectCallbackHolder& callback) {
create_remote_object_callback_.emplace(this, callback);
}
} // namespace debug
} // namespace cobalt