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// Copyright 2015 The Chromium Authors
// 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.h"
#include <memory>
#include <string>
#include <utility>
#include "base/files/file_path.h"
#include "base/memory/ptr_util.h"
#include "build/build_config.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/devtools_agent_host.h"
#include "content/public/browser/devtools_socket_factory.h"
#include "content/public/browser/navigation_entry.h"
#include "headless/public/headless_browser.h"
#include "net/base/ip_address.h"
#include "net/base/net_errors.h"
#include "net/log/net_log_source.h"
#include "net/socket/tcp_server_socket.h"
#include "ui/base/resource/resource_bundle.h"
namespace headless {
namespace {
const char kUseLocalHostForDevToolsHttpServer[] = "localhost";
const int kBackLog = 10;
class TCPEndpointServerSocketFactory : public content::DevToolsSocketFactory {
public:
explicit TCPEndpointServerSocketFactory(const net::HostPortPair& endpoint)
: endpoint_(endpoint) {
DCHECK(!endpoint_.IsEmpty());
if (!endpoint.host().empty() &&
endpoint.host() != kUseLocalHostForDevToolsHttpServer) {
net::IPAddress ip;
DCHECK(ip.AssignFromIPLiteral(endpoint.host()));
}
}
TCPEndpointServerSocketFactory(const TCPEndpointServerSocketFactory&) =
delete;
TCPEndpointServerSocketFactory& operator=(
const TCPEndpointServerSocketFactory&) = delete;
private:
// This function, and the logic below that uses it, is copied from
// chrome/browser/devtools/remote_debugging_server.cc
std::unique_ptr<net::ServerSocket> CreateLocalHostServerSocket(int port) {
std::unique_ptr<net::ServerSocket> socket(
new net::TCPServerSocket(nullptr, net::NetLogSource()));
if (socket->ListenWithAddressAndPort("127.0.0.1", port, kBackLog) ==
net::OK)
return socket;
if (socket->ListenWithAddressAndPort("::1", port, kBackLog) == net::OK)
return socket;
return nullptr;
}
// content::DevToolsSocketFactory.
std::unique_ptr<net::ServerSocket> CreateForHttpServer() override {
std::unique_ptr<net::ServerSocket> socket(
new net::TCPServerSocket(nullptr, net::NetLogSource()));
if (endpoint_.host() == kUseLocalHostForDevToolsHttpServer)
return CreateLocalHostServerSocket(endpoint_.port());
if (socket->ListenWithAddressAndPort(endpoint_.host(), endpoint_.port(),
kBackLog) == net::OK)
return socket;
return nullptr;
}
std::unique_ptr<net::ServerSocket> CreateForTethering(
std::string* out_name) override {
return nullptr;
}
net::HostPortPair endpoint_;
};
#if BUILDFLAG(IS_POSIX)
class TCPAdoptServerSocketFactory : public content::DevToolsSocketFactory {
public:
// Construct a factory to use an already-open, already-listening socket.
explicit TCPAdoptServerSocketFactory(const size_t socket_fd)
: socket_fd_(socket_fd) {}
TCPAdoptServerSocketFactory(const TCPAdoptServerSocketFactory&) = delete;
TCPAdoptServerSocketFactory& operator=(const TCPAdoptServerSocketFactory&) =
delete;
private:
std::unique_ptr<net::ServerSocket> CreateForHttpServer() override {
std::unique_ptr<net::TCPServerSocket> tsock(
new net::TCPServerSocket(nullptr, net::NetLogSource()));
if (tsock->AdoptSocket(socket_fd_) != net::OK) {
LOG(ERROR) << "Failed to adopt open socket";
return nullptr;
}
// Note that we assume that the socket is already listening, so unlike
// TCPEndpointServerSocketFactory, we don't call Listen.
return std::unique_ptr<net::ServerSocket>(std::move(tsock));
}
std::unique_ptr<net::ServerSocket> CreateForTethering(
std::string* out_name) override {
return nullptr;
}
size_t socket_fd_;
};
#else // BUILDFLAG(IS_POSIX)
// Placeholder class to use when a socket_fd is passed in on non-Posix.
class DummyTCPServerSocketFactory : public content::DevToolsSocketFactory {
public:
explicit DummyTCPServerSocketFactory() {}
DummyTCPServerSocketFactory(const DummyTCPServerSocketFactory&) = delete;
DummyTCPServerSocketFactory& operator=(const DummyTCPServerSocketFactory&) =
delete;
private:
std::unique_ptr<net::ServerSocket> CreateForHttpServer() override {
return nullptr;
}
std::unique_ptr<net::ServerSocket> CreateForTethering(
std::string* out_name) override {
return nullptr;
}
};
#endif // BUILDFLAG(IS_POSIX)
void PostTaskToCloseBrowser(base::WeakPtr<HeadlessBrowserImpl> browser) {
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&HeadlessBrowserImpl::Shutdown, browser));
}
} // namespace
void StartLocalDevToolsHttpHandler(HeadlessBrowserImpl* browser) {
HeadlessBrowser::Options* options = browser->options();
if (options->devtools_pipe_enabled) {
content::DevToolsAgentHost::StartRemoteDebuggingPipeHandler(
base::BindOnce(&PostTaskToCloseBrowser, browser->GetWeakPtr()));
}
if (options->devtools_endpoint.IsEmpty())
return;
std::unique_ptr<content::DevToolsSocketFactory> socket_factory;
const net::HostPortPair& endpoint = options->devtools_endpoint;
socket_factory = std::make_unique<TCPEndpointServerSocketFactory>(endpoint);
content::DevToolsAgentHost::StartRemoteDebuggingServer(
std::move(socket_factory),
options->user_data_dir, // TODO(altimin): Figure a proper value for this.
base::FilePath());
}
void StopLocalDevToolsHttpHandler() {
content::DevToolsAgentHost::StopRemoteDebuggingServer();
content::DevToolsAgentHost::StopRemoteDebuggingPipeHandler();
}
} // namespace headless
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