Implement net::GetNetworkList() for Android.

net/base/net_util_posix.cc

Index: net/base/net_util_posix.cc
diff --git a/net/base/net_util_posix.cc b/net/base/net_util_posix.cc
index 8ff720f3e43d0e47e4707eecde5a5a36a25892ea..ecea33f84fff21e876faec9a4d05985dacd527fc 100644
--- a/net/base/net_util_posix.cc
+++ b/net/base/net_util_posix.cc
@@ -9,6 +9,7 @@
 #include "base/eintr_wrapper.h"
 #include "base/file_path.h"
 #include "base/logging.h"
+#include "base/string_tokenizer.h"
 #include "base/string_util.h"
 #include "base/threading/thread_restrictions.h"
 #include "googleurl/src/gurl.h"
@@ -22,6 +23,10 @@
 #include <net/if.h>
 #include <netinet/in.h>
 
+#if defined(OS_ANDROID)
+#include "net/android/network_library.h"
+#endif
+
 namespace net {
 
 bool FileURLToFilePath(const GURL& url, FilePath* path) {
@@ -60,12 +65,27 @@ bool FileURLToFilePath(const GURL& url, FilePath* path) {
 
 bool GetNetworkList(NetworkInterfaceList* networks) {
 #if defined(OS_ANDROID)
-  // TODO: Android API doesn't support ifaddrs. This method was only used by
-  // P2PMessage. Consider to implement it until really needed. The possible
-  // approach is implementing the similar feature by
-  // java.net.NetworkInterface through JNI.
-  NOTIMPLEMENTED();
-  return false;
+  std::string network_list = android::GetNetworkList();
+  StringTokenizer network_interfaces(network_list, ";");
+  while (network_interfaces.GetNext()) {
+    std::string network_item = network_interfaces.token();
+    StringTokenizer network_tokenizer(network_item, ",");
+    std::string name;
+    if (!network_tokenizer.GetNext())
+      continue;
+    name = network_tokenizer.token();
+
+    std::string literal_address;
+    if (!network_tokenizer.GetNext())
+      continue;
+    literal_address = network_tokenizer.token();
+
+    IPAddressNumber address;
+    if (!ParseIPLiteralToNumber(literal_address, &address))
+      continue;
+    networks->push_back(NetworkInterface(name, address));
+  }
+  return true;
 #else
   // getifaddrs() may require IO operations.
   base::ThreadRestrictions::AssertIOAllowed();