Add GetNetworkList() in net_utils.

BUG=None
TEST=Unittests.

Review URL: http://codereview.chromium.org/6676027

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@78780 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 57 insertions, 3 deletions

diff --git a/net/base/net_util_win.cc b/net/base/net_util_win.cc
index dac93a9..ee6a5af 100644
--- a/net/base/net_util_win.cc
+++ b/net/base/net_util_win.cc
@@ -1,18 +1,24 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 <algorithm>
-
 #include "net/base/net_util.h"
 
+#include <iphlpapi.h>
+
+#include <algorithm>
+
 #include "base/file_path.h"
+#include "base/scoped_ptr.h"
 #include "base/string_piece.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
+#include "base/threading/thread_restrictions.h"
 #include "base/utf_string_conversions.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/escape.h"
+#include "net/base/ip_endpoint.h"
+#include "net/base/net_errors.h"
 
 namespace net {
 
@@ -69,4 +75,52 @@ bool FileURLToFilePath(const GURL& url, FilePath* file_path) {
   return true;
 }
 
+bool GetNetworkList(NetworkInterfaceList* networks) {
+  // GetAdaptersAddresses() may require IO operations.
+  base::ThreadRestrictions::AssertIOAllowed();
+
+  IP_ADAPTER_ADDRESSES info_temp;
+  ULONG len = 0;
+
+  // First get number of networks.
+  ULONG result = GetAdaptersAddresses(AF_UNSPEC, 0, NULL, &info_temp, &len);
+  if (result != ERROR_BUFFER_OVERFLOW) {
+    // There are 0 networks.
+    return true;
+  }
+
+  scoped_array<char> buf(new char[len]);
+  IP_ADAPTER_ADDRESSES *adapters =
+      reinterpret_cast<IP_ADAPTER_ADDRESSES *>(buf.get());
+  result = GetAdaptersAddresses(AF_UNSPEC, 0, NULL, adapters, &len);
+  if (result != NO_ERROR) {
+    LOG(ERROR) << "GetAdaptersAddresses failed: " << result;
+    return false;
+  }
+
+  for (IP_ADAPTER_ADDRESSES *adapter = adapters; adapter != NULL;
+       adapter = adapter->Next) {
+    // Ignore the loopback device.
+    if (adapter->IfType == IF_TYPE_SOFTWARE_LOOPBACK) {
+      continue;
+    }
+
+    IP_ADAPTER_UNICAST_ADDRESS* address;
+    for (address = adapter->FirstUnicastAddress; address != NULL;
+         address = address->Next) {
+      int family = address->Address.lpSockaddr->sa_family;
+      if (family == AF_INET || family == AF_INET6) {
+        IPEndPoint endpoint;
+        if (endpoint.FromSockAddr(address->Address.lpSockaddr,
+                                  address->Address.iSockaddrLength)) {
+          std::string name = adapter->AdapterName;
+          networks->push_back(NetworkInterface(name, endpoint.address()));
+        }
+      }
+    }
+  }
+
+  return true;
+}
+
 }  // namespace net