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// Copyright 2016 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 "headless/lib/browser/headless_devtools_manager_delegate.h"
#include <string>
#include <utility>
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/devtools_agent_host.h"
#include "content/public/browser/devtools_frontend_host.h"
#include "content/public/browser/web_contents.h"
#include "headless/grit/headless_lib_resources.h"
#include "headless/lib/browser/headless_browser_context_impl.h"
#include "headless/lib/browser/headless_browser_impl.h"
#include "headless/lib/browser/headless_web_contents_impl.h"
#include "headless/public/devtools/domains/target.h"
#include "ui/base/resource/resource_bundle.h"
namespace headless {
namespace {
const char kIdParam[] = "id";
const char kResultParam[] = "result";
const char kErrorParam[] = "error";
const char kErrorCodeParam[] = "code";
const char kErrorMessageParam[] = "message";
// JSON RPC 2.0 spec: http://www.jsonrpc.org/specification#error_object
enum Error {
kErrorInvalidParam = -32602,
kErrorServerError = -32000
};
std::unique_ptr<base::DictionaryValue> CreateSuccessResponse(
int command_id,
std::unique_ptr<base::Value> result) {
if (!result)
result.reset(new base::DictionaryValue());
std::unique_ptr<base::DictionaryValue> response(new base::DictionaryValue());
response->SetInteger(kIdParam, command_id);
response->Set(kResultParam, std::move(result));
return response;
}
std::unique_ptr<base::DictionaryValue> CreateErrorResponse(
int command_id,
int error_code,
const std::string& error_message) {
std::unique_ptr<base::DictionaryValue> error_object(
new base::DictionaryValue());
error_object->SetInteger(kErrorCodeParam, error_code);
error_object->SetString(kErrorMessageParam, error_message);
std::unique_ptr<base::DictionaryValue> response(new base::DictionaryValue());
response->Set(kErrorParam, std::move(error_object));
return response;
}
std::unique_ptr<base::DictionaryValue> CreateInvalidParamResponse(
int command_id,
const std::string& param) {
return CreateErrorResponse(
command_id, kErrorInvalidParam,
base::StringPrintf("Missing or invalid '%s' parameter", param.c_str()));
}
} // namespace
HeadlessDevToolsManagerDelegate::HeadlessDevToolsManagerDelegate(
base::WeakPtr<HeadlessBrowserImpl> browser)
: browser_(std::move(browser)) {
command_map_["Target.createTarget"] =
&HeadlessDevToolsManagerDelegate::CreateTarget;
command_map_["Target.closeTarget"] =
&HeadlessDevToolsManagerDelegate::CloseTarget;
command_map_["Target.createBrowserContext"] =
&HeadlessDevToolsManagerDelegate::CreateBrowserContext;
command_map_["Target.disposeBrowserContext"] =
&HeadlessDevToolsManagerDelegate::DisposeBrowserContext;
}
HeadlessDevToolsManagerDelegate::~HeadlessDevToolsManagerDelegate() {}
base::DictionaryValue* HeadlessDevToolsManagerDelegate::HandleCommand(
content::DevToolsAgentHost* agent_host,
base::DictionaryValue* command) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (!browser_)
return nullptr;
int id;
std::string method;
if (!command->GetInteger("id", &id) ||
!command->GetString("method", &method)) {
return nullptr;
}
auto find_it = command_map_.find(method);
if (find_it == command_map_.end())
return nullptr;
CommandMemberFnPtr command_fn_ptr = find_it->second;
const base::DictionaryValue* params = nullptr;
command->GetDictionary("params", ¶ms);
std::unique_ptr<base::DictionaryValue> cmd_result(
((this)->*command_fn_ptr)(id, params));
return cmd_result.release();
}
std::string HeadlessDevToolsManagerDelegate::GetDiscoveryPageHTML() {
return ResourceBundle::GetSharedInstance()
.GetRawDataResource(IDR_HEADLESS_LIB_DEVTOOLS_DISCOVERY_PAGE)
.as_string();
}
std::string HeadlessDevToolsManagerDelegate::GetFrontendResource(
const std::string& path) {
return content::DevToolsFrontendHost::GetFrontendResource(path).as_string();
}
std::unique_ptr<base::DictionaryValue>
HeadlessDevToolsManagerDelegate::CreateTarget(
int command_id,
const base::DictionaryValue* params) {
std::string url;
std::string browser_context_id;
int width = browser_->options()->window_size.width();
int height = browser_->options()->window_size.height();
if (!params || !params->GetString("url", &url))
return CreateInvalidParamResponse(command_id, "url");
params->GetString("browserContextId", &browser_context_id);
params->GetInteger("width", &width);
params->GetInteger("height", &height);
HeadlessBrowserContext* context =
browser_->GetBrowserContextForId(browser_context_id);
if (!browser_context_id.empty()) {
context = browser_->GetBrowserContextForId(browser_context_id);
if (!context)
return CreateInvalidParamResponse(command_id, "browserContextId");
} else {
context = browser_->GetDefaultBrowserContext();
if (!context) {
return CreateErrorResponse(command_id, kErrorServerError,
"You specified no |browserContextId|, but "
"there is no default browser context set on "
"HeadlessBrowser");
}
}
HeadlessWebContentsImpl* web_contents_impl =
HeadlessWebContentsImpl::From(context->CreateWebContentsBuilder()
.SetInitialURL(GURL(url))
.SetWindowSize(gfx::Size(width, height))
.Build());
std::unique_ptr<base::Value> result(
target::CreateTargetResult::Builder()
.SetTargetId(web_contents_impl->GetDevToolsAgentHostId())
.Build()
->Serialize());
return CreateSuccessResponse(command_id, std::move(result));
}
std::unique_ptr<base::DictionaryValue>
HeadlessDevToolsManagerDelegate::CloseTarget(
int command_id,
const base::DictionaryValue* params) {
std::string target_id;
if (!params || !params->GetString("targetId", &target_id))
return CreateInvalidParamResponse(command_id, "targetId");
HeadlessWebContents* web_contents =
browser_->GetWebContentsForDevToolsAgentHostId(target_id);
bool success = false;
if (web_contents) {
web_contents->Close();
success = true;
}
std::unique_ptr<base::Value> result(target::CloseTargetResult::Builder()
.SetSuccess(success)
.Build()
->Serialize());
return CreateSuccessResponse(command_id, std::move(result));
}
std::unique_ptr<base::DictionaryValue>
HeadlessDevToolsManagerDelegate::CreateBrowserContext(
int command_id,
const base::DictionaryValue* params) {
HeadlessBrowserContext* browser_context =
browser_->CreateBrowserContextBuilder().Build();
std::unique_ptr<base::Value> result(
target::CreateBrowserContextResult::Builder()
.SetBrowserContextId(browser_context->Id())
.Build()
->Serialize());
return CreateSuccessResponse(command_id, std::move(result));
}
std::unique_ptr<base::DictionaryValue>
HeadlessDevToolsManagerDelegate::DisposeBrowserContext(
int command_id,
const base::DictionaryValue* params) {
std::string browser_context_id;
if (!params || !params->GetString("browserContextId", &browser_context_id))
return CreateInvalidParamResponse(command_id, "browserContextId");
HeadlessBrowserContext* context =
browser_->GetBrowserContextForId(browser_context_id);
bool success = false;
if (context && context != browser_->GetDefaultBrowserContext() &&
context->GetAllWebContents().empty()) {
success = true;
context->Close();
}
std::unique_ptr<base::Value> result(
target::DisposeBrowserContextResult::Builder()
.SetSuccess(success)
.Build()
->Serialize());
return CreateSuccessResponse(command_id, std::move(result));
}
} // namespace headless
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