src/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/installer/util/browser_distribution.h"
  15 #include "chrome/installer/util/firewall_manager_win.h"
  16 #endif  // OS_WIN
  17
  18 #if defined(OS_MACOSX)
  19 #include "chrome/browser/local_discovery/service_discovery_client_mac_factory.h"
  20 #endif
  21
  22 #if defined(ENABLE_MDNS)
  23 #include "chrome/browser/local_discovery/service_discovery_client_mdns.h"
  24 #include "chrome/browser/local_discovery/service_discovery_client_utility.h"
  25 #endif  // ENABLE_MDNS
  26
  27 namespace {
  28
  29 #if defined(OS_WIN)
  30
  31 bool g_is_firewall_ready = false;
  32
  33 void ReportFirewallStats() {
  34   base::FilePath exe_path;
  35   if (!PathService::Get(base::FILE_EXE, &exe_path))
  36     return;
  37   base::ElapsedTimer timer;
  38   scoped_ptr<installer::FirewallManager> manager =
  39       installer::FirewallManager::Create(BrowserDistribution::GetDistribution(),
  40                                          exe_path);
  41   if (!manager)
  42     return;
  43   g_is_firewall_ready = manager->CanUseLocalPorts();
  44   UMA_HISTOGRAM_TIMES("LocalDiscovery.FirewallAccessTime", timer.Elapsed());
  45   UMA_HISTOGRAM_BOOLEAN("LocalDiscovery.IsFirewallReady", g_is_firewall_ready);
  46 }
  47 #endif  // OS_WIN
  48
  49 }  // namespace
  50
  51
  52 namespace local_discovery {
  53
  54 using content::BrowserThread;
  55
  56 namespace {
  57 ServiceDiscoverySharedClient* g_service_discovery_client = NULL;
  58 }  // namespace
  59
  60 ServiceDiscoverySharedClient::ServiceDiscoverySharedClient() {
  61   DCHECK(!g_service_discovery_client);
  62   g_service_discovery_client = this;
  63 }
  64
  65 ServiceDiscoverySharedClient::~ServiceDiscoverySharedClient() {
  66   DCHECK_EQ(g_service_discovery_client, this);
  67   g_service_discovery_client = NULL;
  68 }
  69
  70 #if defined(ENABLE_MDNS) || defined(OS_MACOSX)
  71
  72 scoped_refptr<ServiceDiscoverySharedClient>
  73     ServiceDiscoverySharedClient::GetInstance() {
  74   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  75
  76   if (g_service_discovery_client)
  77     return g_service_discovery_client;
  78
  79 #if defined(OS_MACOSX)
  80   return ServiceDiscoveryClientMacFactory::CreateInstance();
  81 #else  // OS_MACOSX
  82
  83 #if defined(OS_WIN)
  84   static bool reported =
  85       BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
  86                               base::Bind(&ReportFirewallStats));
  87   // TODO(vitalybuka): Switch to |ServiceDiscoveryClientMdns| after we find what
  88   // to do with firewall for user-level installs. crbug.com/366408
  89   if (!g_is_firewall_ready)
  90     return new ServiceDiscoveryClientUtility();
  91 #endif  // OS_WIN
  92
  93   return new ServiceDiscoveryClientMdns();
  94 #endif // OS_MACOSX
  95 }
  96
  97 #else
  98
  99 scoped_refptr<ServiceDiscoverySharedClient>
 100     ServiceDiscoverySharedClient::GetInstance() {
 101   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 102   NOTIMPLEMENTED();
 103   return NULL;
 104 }
 105
 106 #endif  // ENABLE_MDNS
 107
 108 }  // namespace local_discovery