Use mDns in browser process, without sandboxed utility process/

chrome/browser/local_discovery/service_discovery_shared_client.cc

 // Copyright 2013 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 "chrome/browser/local_discovery/service_discovery_shared_client.h"
 
 #include "content/public/browser/browser_thread.h"
 
+#if defined(OS_WIN)
+#include "base/files/file_path.h"
+#include "base/metrics/histogram.h"
+#include "base/path_service.h"
+#include "chrome/browser/local_discovery/service_discovery_client_utility.h"
+#include "chrome/installer/util/browser_distribution.h"
+#include "chrome/installer/util/firewall_manager_win.h"
+#endif  // OS_WIN
+
 #if defined(OS_MACOSX)
 #include "chrome/browser/local_discovery/service_discovery_client_mac_factory.h"
 #endif
 
 #if defined(ENABLE_MDNS)
-#include "chrome/browser/local_discovery/service_discovery_client_utility.h"
+#include "chrome/browser/local_discovery/service_discovery_client_mdns.h"
 #endif  // ENABLE_MDNS
 
+namespace {
+
+#if defined(OS_WIN)
+bool IsFirewallReady() {
+  base::FilePath exe_path;
+  if (PathService::Get(base::FILE_EXE, &exe_path))
+    return false;
+  scoped_ptr<installer::FirewallManager> manager =
+      installer::FirewallManager::Create(BrowserDistribution::GetDistribution(),
+                                         exe_path);
+  if (!manager)
+    return false;
+  bool is_ready = manager->CanUseLocalPorts();
+  UMA_HISTOGRAM_BOOLEAN("LocalDiscovery.IsFirewallReady", is_ready);
+  return is_ready;
+}
+#endif  // OS_WIN
+
+}  // namespace
+
+
 namespace local_discovery {
 
 using content::BrowserThread;
 
 namespace {
 ServiceDiscoverySharedClient* g_service_discovery_client = NULL;
 }  // namespace
 
 ServiceDiscoverySharedClient::ServiceDiscoverySharedClient() {
   DCHECK(!g_service_discovery_client);
@@ skipping 10 matching lines @@
 scoped_refptr<ServiceDiscoverySharedClient>
     ServiceDiscoverySharedClient::GetInstance() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   if (g_service_discovery_client)
     return g_service_discovery_client;
 
 #if defined(OS_MACOSX)
   return ServiceDiscoveryClientMacFactory::CreateInstance();
 #else
-  return new ServiceDiscoveryClientUtility();
+
+#if defined(OS_WIN)
+  static bool is_firewall_ready = IsFirewallReady();
+  if (!is_firewall_ready) {
+    // TODO(vitalybuka): Remove after we find what to do with firewall for
+    // user-level installs. crbug.com/366408
+    return new ServiceDiscoveryClientUtility();
+  }
+#endif  // OS_WIN
+  return new ServiceDiscoveryClientMdns();
 #endif
 }
 
 #else
 
 scoped_refptr<ServiceDiscoverySharedClient>
     ServiceDiscoverySharedClient::GetInstance() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   NOTIMPLEMENTED();
   return NULL;
 }
 
 #endif  // ENABLE_MDNS
 
 }  // namespace local_discovery