// Copyright (c) 2012 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 "base/memory/ref_counted.h"
#include "base/strings/stringprintf.h"
#include "chrome/browser/extensions/extension_apitest.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "extensions/browser/api/dns/host_resolver_wrapper.h"
#include "extensions/browser/api/dns/mock_host_resolver_creator.h"
#include "extensions/browser/api/socket/socket_api.h"
#include "extensions/test/extension_test_message_listener.h"
#include "extensions/test/result_catcher.h"
#include "net/dns/mock_host_resolver.h"
#include "net/test/spawned_test_server/spawned_test_server.h"

using extensions::Extension;
using extensions::ResultCatcher;

namespace {

const std::string kHostname = "127.0.0.1";
const int kPort = 8888;

class SocketApiTest : public ExtensionApiTest {
 public:
  SocketApiTest() : resolver_event_(true, false),
                    resolver_creator_(
                        new extensions::MockHostResolverCreator()) {
  }

  void SetUpOnMainThread() override {
    extensions::HostResolverWrapper::GetInstance()->SetHostResolverForTesting(
        resolver_creator_->CreateMockHostResolver());
  }

  void TearDownOnMainThread() override {
    extensions::HostResolverWrapper::GetInstance()->
        SetHostResolverForTesting(NULL);
    resolver_creator_->DeleteMockHostResolver();
  }

 private:
  base::WaitableEvent resolver_event_;

  // The MockHostResolver asserts that it's used on the same thread on which
  // it's created, which is actually a stronger rule than its real counterpart.
  // But that's fine; it's good practice.
  scoped_refptr<extensions::MockHostResolverCreator> resolver_creator_;
};

}  // namespace

IN_PROC_BROWSER_TEST_F(SocketApiTest, SocketUDPExtension) {
  scoped_ptr<net::SpawnedTestServer> test_server(
      new net::SpawnedTestServer(
          net::SpawnedTestServer::TYPE_UDP_ECHO,
          net::SpawnedTestServer::kLocalhost,
          base::FilePath(FILE_PATH_LITERAL("net/data"))));
  EXPECT_TRUE(test_server->Start());

  net::HostPortPair host_port_pair = test_server->host_port_pair();
  int port = host_port_pair.port();
  ASSERT_GT(port, 0);

  // Test that sendTo() is properly resolving hostnames.
  host_port_pair.set_host("LOCALhost");

  ResultCatcher catcher;
  catcher.RestrictToBrowserContext(browser()->profile());

  ExtensionTestMessageListener listener("info_please", true);

  ASSERT_TRUE(LoadExtension(test_data_dir_.AppendASCII("socket/api")));
  EXPECT_TRUE(listener.WaitUntilSatisfied());
  listener.Reply(
      base::StringPrintf("udp:%s:%d", host_port_pair.host().c_str(), port));

  EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
}

IN_PROC_BROWSER_TEST_F(SocketApiTest, SocketTCPExtension) {
  scoped_ptr<net::SpawnedTestServer> test_server(
      new net::SpawnedTestServer(
          net::SpawnedTestServer::TYPE_TCP_ECHO,
          net::SpawnedTestServer::kLocalhost,
          base::FilePath(FILE_PATH_LITERAL("net/data"))));
  EXPECT_TRUE(test_server->Start());

  net::HostPortPair host_port_pair = test_server->host_port_pair();
  int port = host_port_pair.port();
  ASSERT_GT(port, 0);

  // Test that connect() is properly resolving hostnames.
  host_port_pair.set_host("lOcAlHoSt");

  ResultCatcher catcher;
  catcher.RestrictToBrowserContext(browser()->profile());

  ExtensionTestMessageListener listener("info_please", true);

  ASSERT_TRUE(LoadExtension(test_data_dir_.AppendASCII("socket/api")));
  EXPECT_TRUE(listener.WaitUntilSatisfied());
  listener.Reply(
      base::StringPrintf("tcp:%s:%d", host_port_pair.host().c_str(), port));

  EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
}

IN_PROC_BROWSER_TEST_F(SocketApiTest, SocketTCPServerExtension) {
  ResultCatcher catcher;
  catcher.RestrictToBrowserContext(browser()->profile());
  ExtensionTestMessageListener listener("info_please", true);
  ASSERT_TRUE(LoadExtension(test_data_dir_.AppendASCII("socket/api")));
  EXPECT_TRUE(listener.WaitUntilSatisfied());
  listener.Reply(
      base::StringPrintf("tcp_server:%s:%d", kHostname.c_str(), kPort));

  EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
}

IN_PROC_BROWSER_TEST_F(SocketApiTest, SocketTCPServerUnbindOnUnload) {
  ResultCatcher catcher;
  const Extension* extension =
      LoadExtension(test_data_dir_.AppendASCII("socket/unload"));
  ASSERT_TRUE(extension);
  EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();

  UnloadExtension(extension->id());

  ASSERT_TRUE(LoadExtension(test_data_dir_.AppendASCII("socket/unload")))
      << message_;
  EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
}

IN_PROC_BROWSER_TEST_F(SocketApiTest, SocketMulticast) {
  ResultCatcher catcher;
  catcher.RestrictToBrowserContext(browser()->profile());
  ExtensionTestMessageListener listener("info_please", true);
  ASSERT_TRUE(LoadExtension(test_data_dir_.AppendASCII("socket/api")));
  EXPECT_TRUE(listener.WaitUntilSatisfied());
  listener.Reply(
      base::StringPrintf("multicast:%s:%d", kHostname.c_str(), kPort));

  EXPECT_TRUE(catcher.GetNextResult()) << catcher.message();
}