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 void ReportFirewallStats() {
  31   base::FilePath exe_path;
  32   if (!PathService::Get(base::FILE_EXE, &exe_path))
  33     return;
  34   base::ElapsedTimer timer;
  35   scoped_ptr<installer::FirewallManager> manager =
  36       installer::FirewallManager::Create(BrowserDistribution::GetDistribution(),
  37                                          exe_path);
  38   if (!manager)
  39     return;
  40   bool is_ready = manager->CanUseLocalPorts();
  41   UMA_HISTOGRAM_TIMES("LocalDiscovery.FirewallAccessTime", timer.Elapsed());
  42   UMA_HISTOGRAM_BOOLEAN("LocalDiscovery.IsFirewallReady", is_ready);
  43 }
  44 #endif  // OS_WIN
  45
  46 }  // namespace
  47
  48
  49 namespace local_discovery {
  50
  51 using content::BrowserThread;
  52
  53 namespace {
  54 ServiceDiscoverySharedClient* g_service_discovery_client = NULL;
  55 }  // namespace
  56
  57 ServiceDiscoverySharedClient::ServiceDiscoverySharedClient() {
  58   DCHECK(!g_service_discovery_client);
  59   g_service_discovery_client = this;
  60 }
  61
  62 ServiceDiscoverySharedClient::~ServiceDiscoverySharedClient() {
  63   DCHECK_EQ(g_service_discovery_client, this);
  64   g_service_discovery_client = NULL;
  65 }
  66
  67 #if defined(ENABLE_MDNS) || defined(OS_MACOSX)
  68
  69 scoped_refptr<ServiceDiscoverySharedClient>
  70     ServiceDiscoverySharedClient::GetInstance() {
  71   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  72
  73   if (g_service_discovery_client)
  74     return g_service_discovery_client;
  75
  76 #if defined(OS_MACOSX)
  77   return ServiceDiscoveryClientMacFactory::CreateInstance();
  78 #else
  79
  80 #if defined(OS_WIN)
  81   static bool reported =
  82       BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
  83                               base::Bind(&ReportFirewallStats));
  84   // TODO(vitalybuka): Switch to |ServiceDiscoveryClientMdns| after we find what
  85   // to do with firewall for user-level installs. crbug.com/366408
  86   return new ServiceDiscoveryClientUtility();
  87 #endif  // OS_WIN
  88   return new ServiceDiscoveryClientMdns();
  89 #endif
  90 }
  91
  92 #else
  93
  94 scoped_refptr<ServiceDiscoverySharedClient>
  95     ServiceDiscoverySharedClient::GetInstance() {
  96   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  97   NOTIMPLEMENTED();
  98   return NULL;
  99 }
 100
 101 #endif  // ENABLE_MDNS
 102
 103 }  // namespace local_discovery