chrome/browser/local_discovery/service_discovery_shared_client.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/local_discovery/service_discovery_shared_client.h"
   6
   7 #include "content/public/browser/browser_thread.h"
   8
   9 #if defined(OS_WIN)
  10 #include "base/files/file_path.h"
  11 #include "base/metrics/histogram.h"
  12 #include "base/path_service.h"
  13 #include "base/timer/elapsed_timer.h"
  14 #include "chrome/browser/local_discovery/service_discovery_client_utility.h"
  15 #include "chrome/installer/util/browser_distribution.h"
  16 #include "chrome/installer/util/firewall_manager_win.h"
  17 #endif  // OS_WIN
  18
  19 #if defined(OS_MACOSX)
  20 #include "chrome/browser/local_discovery/service_discovery_client_mac_factory.h"
  21 #endif
  22
  23 #if defined(ENABLE_MDNS)
  24 #include "chrome/browser/local_discovery/service_discovery_client_mdns.h"
  25 #endif  // ENABLE_MDNS
  26
  27 namespace {
  28
  29 #if defined(OS_WIN)
  30 bool IsFirewallReady() {
  31   base::FilePath exe_path;
  32   if (!PathService::Get(base::FILE_EXE, &exe_path))
  33     return false;
  34   base::ElapsedTimer timer;
  35   scoped_ptr<installer::FirewallManager> manager =
  36       installer::FirewallManager::Create(BrowserDistribution::GetDistribution(),
  37                                          exe_path);
  38   if (!manager)
  39     return false;
  40   bool is_ready = manager->CanUseLocalPorts();
  41   UMA_HISTOGRAM_TIMES("LocalDiscovery.FirewallAccessTime", timer.Elapsed());
  42   UMA_HISTOGRAM_BOOLEAN("LocalDiscovery.IsFirewallReady", is_ready);
  43   return is_ready;
  44 }
  45 #endif  // OS_WIN
  46
  47 }  // namespace
  48
  49
  50 namespace local_discovery {
  51
  52 using content::BrowserThread;
  53
  54 namespace {
  55 ServiceDiscoverySharedClient* g_service_discovery_client = NULL;
  56 }  // namespace
  57
  58 ServiceDiscoverySharedClient::ServiceDiscoverySharedClient() {
  59   DCHECK(!g_service_discovery_client);
  60   g_service_discovery_client = this;
  61 }
  62
  63 ServiceDiscoverySharedClient::~ServiceDiscoverySharedClient() {
  64   DCHECK_EQ(g_service_discovery_client, this);
  65   g_service_discovery_client = NULL;
  66 }
  67
  68 #if defined(ENABLE_MDNS) || defined(OS_MACOSX)
  69
  70 scoped_refptr<ServiceDiscoverySharedClient>
  71     ServiceDiscoverySharedClient::GetInstance() {
  72   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  73
  74   if (g_service_discovery_client)
  75     return g_service_discovery_client;
  76
  77 #if defined(OS_MACOSX)
  78   return ServiceDiscoveryClientMacFactory::CreateInstance();
  79 #else
  80
  81 #if defined(OS_WIN)
  82   static bool is_firewall_ready = IsFirewallReady();
  83   if (!is_firewall_ready) {
  84     // TODO(vitalybuka): Remove after we find what to do with firewall for
  85     // user-level installs. crbug.com/366408
  86     return new ServiceDiscoveryClientUtility();
  87   }
  88 #endif  // OS_WIN
  89   return new ServiceDiscoveryClientMdns();
  90 #endif
  91 }
  92
  93 #else
  94
  95 scoped_refptr<ServiceDiscoverySharedClient>
  96     ServiceDiscoverySharedClient::GetInstance() {
  97   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  98   NOTIMPLEMENTED();
  99   return NULL;
 100 }
 101
 102 #endif  // ENABLE_MDNS
 103
 104 }  // namespace local_discovery