From b25bb33625f3c84b5d310952b00fab51403bc4bd Mon Sep 17 00:00:00 2001
From: Thomas Flueeli <tflueeli@gmail.com>
Date: Sun, 31 Oct 2010 13:23:45 +0100
Subject: [PATCH] fix fd.o#24775

---
 src/bytestream-socks5.c |   72 ++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 68 insertions(+), 4 deletions(-)

diff --git a/src/bytestream-socks5.c b/src/bytestream-socks5.c
index e7ab748..2d0a171 100644
--- a/src/bytestream-socks5.c
+++ b/src/bytestream-socks5.c
@@ -1637,10 +1637,74 @@ socks5_init_error:
 static GSList *
 get_local_interfaces_ips (void)
 {
-  /* FIXME: fd.o#24775: please implement this using ioctlsocket() and
-   * SIO_GET_INTERFACE_LIST, if you care about doing SOCKS5 bytestreams on
-   * Windows */
-  return NULL;
+  gint sockfd;
+  INTERFACE_INFO *iflist = NULL;
+  gsize size = 0;
+  int ret;
+  int error;
+  gsize bytes;
+  gsize num;
+  gsize i;
+  struct sockaddr_in *sa;
+  GSList *ips = NULL;
+
+  /* FIXME: add IPv6 addresses */
+  if ((sockfd = socket (AF_INET, SOCK_DGRAM, IPPROTO_IP)) == INVALID_SOCKET)
+    {
+      DEBUG ("Cannot open socket to retrieve interface list");
+      return NULL;
+    }
+
+  /* Loop and get each interface the system has, one by one... */
+  do
+    {
+      size += sizeof (INTERFACE_INFO);
+      /* realloc buffer size until no overflow occurs  */
+      if (NULL == (iflist = realloc (iflist, size)))
+        {
+          DEBUG ("Out of memory while allocation interface configuration"
+              " structure");
+          closesocket (sockfd);
+          return NULL;
+        }
+
+        ret = WSAIoctl (sockfd, SIO_GET_INTERFACE_LIST, NULL, 0, iflist,
+                        size, &bytes, NULL, NULL);
+        error = WSAGetLastError ();
+
+        if (ret == SOCKET_ERROR && error != WSAEFAULT)
+          {
+            DEBUG ("Cannot retrieve interface list");
+            closesocket (sockfd);
+            free (iflist);
+            return NULL;
+          }
+    } while (ret == SOCKET_ERROR);
+
+  num = bytes / sizeof (INTERFACE_INFO);
+
+  /* Loop throught the interface list and get the IP address of each IF */
+  for (i = 0; i < num; i++)
+    {
+      /* no ip address from interface that is down */
+      if ((iflist[i].iiFlags & IFF_UP) == 0)
+        continue;
+
+      if ((iflist[i].iiFlags & IFF_LOOPBACK) == IFF_LOOPBACK)
+        {
+          DEBUG ("Ignoring loopback interface");
+          continue;
+        }
+
+      sa = (struct sockaddr_in *) &(iflist[i].iiAddress);
+      ips = g_slist_prepend (ips, g_strdup (inet_ntoa (sa->sin_addr)));
+      DEBUG ("IP Address: %s", inet_ntoa (sa->sin_addr));
+    }
+
+  closesocket (sockfd);
+  free (iflist);
+
+  return ips;
 }
 
 #else
-- 
1.7.0.2.msysgit.0