Add IP address handling to net::IsHostnameNonUnique

net/base/net_util.h

 // Copyright (c) 2012 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.
 
 #ifndef NET_BASE_NET_UTIL_H_
 #define NET_BASE_NET_UTIL_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
@@ skipping 94 matching lines @@
     int* port);
 
 // Returns a host:port string for the given URL.
 NET_EXPORT std::string GetHostAndPort(const GURL& url);
 
 // Returns a host[:port] string for the given URL, where the port is omitted
 // if it is the default for the URL's scheme.
 NET_EXPORT_PRIVATE std::string GetHostAndOptionalPort(const GURL& url);
 
 // Returns true if |hostname| contains a non-registerable or non-assignable
-// domain name (eg: a gTLD that has not been assigned by IANA)
-//
-// TODO(rsleevi): http://crbug.com/119212 - Also match internal IP
-// address ranges.
+// domain name (eg: a gTLD that has not been assigned by IANA) or an IP address
+// that falls in an IANA-reserved range.
 NET_EXPORT bool IsHostnameNonUnique(const std::string& hostname);
 
+// Returns true if an IP address hostname is in a range reserved by the IANA.
+// Works with both IPv4 and IPv6 addresses, but you must specify which type
+// you're checking. It's the caller's responsibility to make sure that the
+// host_addr is actually the type that's indicated by |ipv4|.
+NET_EXPORT bool IsIPAddressReserved(const IPAddressNumber& address, bool ipv4);

[Ryan Sleevi, 2013/08/08 19:49:31]

If using |IPAddressNumber|, then we just use kIPv4AddressSize / k
IPv6AddressSize, and no need for the bool.

[felt, 2013/08/09 04:53:20]

Done.

+
 // Convenience struct for when you need a |struct sockaddr|.
 struct SockaddrStorage {
   SockaddrStorage() : addr_len(sizeof(addr_storage)),
                       addr(reinterpret_cast<struct sockaddr*>(&addr_storage)) {}
   struct sockaddr_storage addr_storage;
   socklen_t addr_len;
   struct sockaddr* const addr;
 };
 
 // Extracts the IP address and port portions of a sockaddr. |port| is optional,
@@ skipping 402 matching lines @@
   WIFI_PHY_LAYER_PROTOCOL_UNKNOWN
 };
 
 // Characterize the PHY mode of the currently associated access point.
 // Currently only available on OS_WIN.
 NET_EXPORT WifiPHYLayerProtocol GetWifiPHYLayerProtocol();
 
 }  // namespace net
 
 #endif  // NET_BASE_NET_UTIL_H_