* autoload.cc (GetIpForwardTable): Define.

	* fhandler_socket.cc (fhandler_socket::ioctl): Handle SIOCGIFDSTADDR.
	* net.cc (get_routedst): New static function to get destination
	address of point-to-point interfaces.
	(get_xp_ifconf): Handle SIOCGIFDSTADDR.
	(get_2k_ifconf): Ditto.
	(get_nt_ifconf): Ditto.
	(get_ifconf): Ditto.
	* include/asm/socket.h (SIOCGIFDSTADDR): Define.
	* include/cygwin/if.h (struct ifreq): Add ifru_dstaddr member.
	(ifr_dstaddr): Define.
	* include/cygwin/in.h: Cast ipv4 addresses correctly to in_addr_t in
	definitions.

winsup/cygwin/ChangeLog

@@ -1,3 +1,19 @@
+2007-06-14  Corinna Vinschen  <[email protected]>
+
+	* autoload.cc (GetIpForwardTable): Define.
+	* fhandler_socket.cc (fhandler_socket::ioctl): Handle SIOCGIFDSTADDR.
+	* net.cc (get_routedst): New static function to get destination
+	address of point-to-point interfaces.
+	(get_xp_ifconf): Handle SIOCGIFDSTADDR.
+	(get_2k_ifconf): Ditto.
+	(get_nt_ifconf): Ditto.
+	(get_ifconf): Ditto.
+	* include/asm/socket.h (SIOCGIFDSTADDR): Define.
+	* include/cygwin/if.h (struct ifreq): Add ifru_dstaddr member.
+	(ifr_dstaddr): Define.
+	* include/cygwin/in.h: Cast ipv4 addresses correctly to in_addr_t in
+	definitions.
+
 2007-06-12  Christopher Faylor  <[email protected]>
 
 	* signal.cc (usleep): Use useconds_t for the type as per POSIX.

winsup/cygwin/autoload.cc

@@ -395,6 +395,7 @@ LoadDLLfunc (WSAWaitForMultipleEvents, 20, ws2_32)
 LoadDLLfuncEx2 (GetAdaptersAddresses, 20, iphlpapi, 1, 50)
 LoadDLLfuncEx2 (GetIfEntry, 4, iphlpapi, 1, 50)
 LoadDLLfuncEx2 (GetIpAddrTable, 12, iphlpapi, 1, 50)
+LoadDLLfuncEx2 (GetIpForwardTable, 12, iphlpapi, 1, 50)
 LoadDLLfuncEx2 (GetNetworkParams, 8, iphlpapi, 1, 50)
 LoadDLLfuncEx2 (GetTcpTable, 12, iphlpapi, 1, 50)
 LoadDLLfuncEx2 (SendARP, 16, iphlpapi, 1, 50)

winsup/cygwin/fhandler_socket.cc

@@ -1519,6 +1519,7 @@ fhandler_socket::ioctl (unsigned int cmd, void *p)
     case SIOCGIFMTU:
     case SIOCGIFINDEX:
     case SIOCGIFFRNDLYNAM:
+    case SIOCGIFDSTADDR:
       {
 	if (!p)
 	  {

winsup/cygwin/include/asm/socket.h

@@ -44,6 +44,7 @@ details. */
 #define SIOCGIFINDEX    _IOW('s', 108, struct ifreq) /* get if index */
 #define SIOGIFINDEX SIOCGIFINDEX /* backward compatibility w/ Linux typo. */
 #define SIOCGIFFRNDLYNAM _IOW('s', 109, struct ifreq) /* get friendly if name */
+#define SIOCGIFDSTADDR  _IOW('s', 110, struct ifreq) /* Get if dstaddr */
 
 #define SOL_SOCKET      0xffff          /* options for socket level */
 

winsup/cygwin/include/cygwin/if.h

@@ -64,6 +64,7 @@ struct ifreq {
   union {
     struct  sockaddr ifru_addr;
     struct  sockaddr ifru_broadaddr;
+    struct  sockaddr ifru_dstaddr;
     struct  sockaddr ifru_netmask;
     struct  sockaddr ifru_hwaddr;
     int     ifru_flags;
@@ -80,6 +81,7 @@ struct ifreq {
 #define ifr_name        ifr_ifrn.ifrn_name      /* interface name       */
 #define ifr_addr        ifr_ifru.ifru_addr      /* address              */
 #define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address    */
+#define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* destination address  */
 #define ifr_netmask     ifr_ifru.ifru_netmask   /* interface net mask   */
 #define ifr_flags       ifr_ifru.ifru_flags     /* flags                */
 #define ifr_hwaddr      ifr_ifru.ifru_hwaddr    /* MAC address          */

winsup/cygwin/include/cygwin/in.h

@@ -197,35 +197,35 @@ struct sockaddr_in
  * On subnets, host and network parts are found according
  * to the subnet mask, not these masks.
  */
-#define	IN_CLASSA(a)		((((long int) (a)) & 0x80000000) == 0)
+#define	IN_CLASSA(a)		((((in_addr_t) (a)) & 0x80000000) == 0)
 #define	IN_CLASSA_NET		0xff000000
 #define	IN_CLASSA_NSHIFT	24
 #define	IN_CLASSA_HOST		(0xffffffff & ~IN_CLASSA_NET)
 #define	IN_CLASSA_MAX		128
 
-#define	IN_CLASSB(a)		((((long int) (a)) & 0xc0000000) == 0x80000000)
+#define	IN_CLASSB(a)		((((in_addr_t) (a)) & 0xc0000000) == 0x80000000)
 #define	IN_CLASSB_NET		0xffff0000
 #define	IN_CLASSB_NSHIFT	16
 #define	IN_CLASSB_HOST		(0xffffffff & ~IN_CLASSB_NET)
 #define	IN_CLASSB_MAX		65536
 
-#define	IN_CLASSC(a)		((((long int) (a)) & 0xe0000000) == 0xc0000000)
+#define	IN_CLASSC(a)		((((in_addr_t) (a)) & 0xe0000000) == 0xc0000000)
 #define	IN_CLASSC_NET		0xffffff00
 #define	IN_CLASSC_NSHIFT	8
 #define	IN_CLASSC_HOST		(0xffffffff & ~IN_CLASSC_NET)
 
-#define	IN_CLASSD(a)		((((long int) (a)) & 0xf0000000) == 0xe0000000)
+#define	IN_CLASSD(a)		((((in_addr_t) (a)) & 0xf0000000) == 0xe0000000)
 #define	IN_MULTICAST(a)		IN_CLASSD(a)
 #define IN_MULTICAST_NET	0xF0000000
 
-#define	IN_EXPERIMENTAL(a)	((((long int) (a)) & 0xe0000000) == 0xe0000000)
-#define	IN_BADCLASS(a)		((((long int) (a)) & 0xf0000000) == 0xf0000000)
+#define	IN_EXPERIMENTAL(a)	((((in_addr_t) (a)) & 0xe0000000) == 0xe0000000)
+#define	IN_BADCLASS(a)		((((in_addr_t) (a)) & 0xf0000000) == 0xf0000000)
 
 /* Address to accept any incoming messages. */
-#define	INADDR_ANY		((unsigned long int) 0x00000000)
+#define	INADDR_ANY		((in_addr_t) 0x00000000)
 
 /* Address to send to all hosts. */
-#define	INADDR_BROADCAST	((unsigned long int) 0xffffffff)
+#define	INADDR_BROADCAST	((in_addr_t) 0xffffffff)
 
 /* Address indicating an error return. */
 #define	INADDR_NONE		0xffffffff
@@ -235,7 +235,7 @@ struct sockaddr_in
 
 /* Address to loopback in software to local host.  */
 #define	INADDR_LOOPBACK		0x7f000001	/* 127.0.0.1   */
-#define	IN_LOOPBACK(a)		((((long int) (a)) & 0xff000000) == 0x7f000000)
+#define	IN_LOOPBACK(a)		((((in_addr_t) (a)) & 0xff000000) == 0x7f000000)
 
 /* Defines for Multicast INADDR */
 #define INADDR_UNSPEC_GROUP	0xe0000000      /* 224.0.0.0   */

winsup/cygwin/net.cc

@@ -1285,6 +1285,23 @@ convert_ifr_flags (u_long ws_flags)
 	 | ((ws_flags & WS_IFF_MULTICAST) << 8);
 }
 
+static u_long
+get_routedst (DWORD if_index)
+{
+  PMIB_IPFORWARDTABLE pift;
+  ULONG size = 0;
+  if (GetIpForwardTable (NULL, &size, FALSE) == ERROR_INSUFFICIENT_BUFFER
+      && (pift = (PMIB_IPFORWARDTABLE) alloca (size))
+      && GetIpForwardTable (pift, &size, FALSE) == NO_ERROR)
+    for (DWORD i = 0; i < pift->dwNumEntries; ++i)
+      {
+        if (pift->table[i].dwForwardIfIndex == if_index
+	    && pift->table[i].dwForwardMask == INADDR_BROADCAST)
+	  return pift->table[i].dwForwardDest;
+      }
+  return INADDR_ANY;
+}
+
 /*
  * IFCONF XP SP1 and above.
  * Use IP Helpper function GetAdaptersAddresses.
@@ -1364,6 +1381,20 @@ get_xp_ifconf (SOCKET s, struct ifconf *ifc, int what)
 		      &iie[iinf_idx].iiBroadcastAddress.AddressIn,
 		      sizeof (struct sockaddr_in));
 	      break;
+	    case SIOCGIFDSTADDR:
+	      if (pap->IfType == IF_TYPE_PPP)
+		{
+		  struct sockaddr_in *sa = (struct sockaddr_in *)
+					   &ifr->ifr_dstaddr;
+		  sa->sin_addr.s_addr = get_routedst (pap->IfIndex);
+		  sa->sin_family = AF_INET;
+		  sa->sin_port = 0;
+		}
+	      else
+		memcpy (&ifr->ifr_addr,
+			&iie[iinf_idx].iiAddress.AddressIn,
+			sizeof (struct sockaddr_in));
+	      break;
 	    case SIOCGIFNETMASK:
 	      memcpy (&ifr->ifr_netmask,
 		      &iie[iinf_idx].iiNetmask.AddressIn,
@@ -1565,6 +1596,17 @@ get_2k_ifconf (struct ifconf *ifc, int what)
 		sa->sin_port = 0;
 #endif
 		break;
+	      case SIOCGIFDSTADDR:
+		sa = (struct sockaddr_in *) &ifr->ifr_dstaddr;
+		if (ifrow->dwType == MIB_IF_TYPE_PPP
+		    || ifrow->dwType == MIB_IF_TYPE_SLIP)
+		  sa->sin_addr.s_addr =
+		  	get_routedst (ipt->table[ip_cnt].dwIndex);
+		else
+		  sa->sin_addr.s_addr = ipt->table[ip_cnt].dwAddr;
+		sa->sin_family = AF_INET;
+		sa->sin_port = 0;
+	        break;
 	      case SIOCGIFNETMASK:
 		sa = (struct sockaddr_in *) &ifr->ifr_netmask;
 		sa->sin_addr.s_addr = ipt->table[ip_cnt].dwMask;
@@ -1719,6 +1761,7 @@ get_nt_ifconf (struct ifconf *ifc, int what)
 			    break;
 			  case SIOCGIFCONF:
 			  case SIOCGIFADDR:
+			  case SIOCGIFDSTADDR:
 			    sa = (struct sockaddr_in *) &ifr->ifr_addr;
 			    sa->sin_addr.s_addr =
 			      cygwin_inet_addr (dhcpaddress);
@@ -1766,6 +1809,7 @@ get_nt_ifconf (struct ifconf *ifc, int what)
 			    break;
 			  case SIOCGIFCONF:
 			  case SIOCGIFADDR:
+			  case SIOCGIFDSTADDR:
 			    sa = (struct sockaddr_in *) &ifr->ifr_addr;
 			    sa->sin_addr.s_addr = cygwin_inet_addr (ip);
 			    sa->sin_family = AF_INET;
@@ -1845,6 +1889,7 @@ get_ifconf (SOCKET s, struct ifconf *ifc, int what)
 	    break;
 	  case SIOCGIFCONF:
 	  case SIOCGIFADDR:
+	  case SIOCGIFDSTADDR:
 	    sa = (struct sockaddr_in *) &ifr->ifr_addr;
 	    sa->sin_addr.s_addr = htonl (INADDR_LOOPBACK);
 	    sa->sin_family = AF_INET;