/* Enumerates the IP addresses in the system using SIOCGIFCONF, returning
* the count to you in *pcAddresses. It also returns to you the struct ifconf
* used by the call to ioctl, so that you may process the addresses further.
* Free ifc->ifc_buf using HeapFree.
* Returns NO_ERROR on success, something else on failure.
*/
static DWORD enumIPAddresses(PDWORD pcAddresses, struct ifconf *ifc)
{
DWORD ret;
int fd;
fd = socket(PF_INET, SOCK_DGRAM, 0);
if (fd != -1) {
int ioctlRet = 0;
DWORD guessedNumAddresses = 0, numAddresses = 0;
caddr_t ifPtr;
int lastlen;
ret = NO_ERROR;
ifc->ifc_len = 0;
ifc->ifc_buf = NULL;
/* there is no way to know the interface count beforehand,
so we need to loop again and again upping our max each time
until returned is constant across 2 calls */
do {
lastlen = ifc->ifc_len;
HeapFree(GetProcessHeap(), 0, ifc->ifc_buf);
if (guessedNumAddresses == 0)
guessedNumAddresses = INITIAL_INTERFACES_ASSUMED;
else
guessedNumAddresses *= 2;
ifc->ifc_len = sizeof(struct ifreq) * guessedNumAddresses;
ifc->ifc_buf = HeapAlloc(GetProcessHeap(), 0, ifc->ifc_len);
ioctlRet = ioctl(fd, SIOCGIFCONF, ifc);
} while ((ioctlRet == 0) && (ifc->ifc_len != lastlen));
if (ioctlRet == 0) {
ifPtr = ifc->ifc_buf;
while (ifPtr && ifPtr < ifc->ifc_buf + ifc->ifc_len) {
struct ifreq *ifr = (struct ifreq *)ifPtr;
if (ifr->ifr_addr.sa_family == AF_INET)
numAddresses++;
ifPtr += ifreq_len((struct ifreq *)ifPtr);
}
}
else
ret = ERROR_INVALID_PARAMETER; /* FIXME: map from errno to Win32 */
if (!ret)
*pcAddresses = numAddresses;
else
{
HeapFree(GetProcessHeap(), 0, ifc->ifc_buf);
ifc->ifc_buf = NULL;
}
close(fd);
}
else
ret = ERROR_NO_SYSTEM_RESOURCES;
return ret;
}
DWORD getIPAddrTable(PMIB_IPADDRTABLE *ppIpAddrTable, HANDLE heap, DWORD flags)
{
DWORD ret;
if (!ppIpAddrTable)
ret = ERROR_INVALID_PARAMETER;
else
{
DWORD numAddresses = 0;
struct ifconf ifc;
ret = enumIPAddresses(&numAddresses, &ifc);
if (!ret)
{
DWORD size = sizeof(MIB_IPADDRTABLE);
if (numAddresses > 1)
size += (numAddresses - 1) * sizeof(MIB_IPADDRROW);
*ppIpAddrTable = HeapAlloc(heap, flags, size);
if (*ppIpAddrTable) {
DWORD i = 0, bcast;
caddr_t ifPtr;
ret = NO_ERROR;
(*ppIpAddrTable)->dwNumEntries = numAddresses;
ifPtr = ifc.ifc_buf;
while (!ret && ifPtr && ifPtr < ifc.ifc_buf + ifc.ifc_len) {
struct ifreq *ifr = (struct ifreq *)ifPtr;
ifPtr += ifreq_len(ifr);
if (ifr->ifr_addr.sa_family != AF_INET)
continue;
ret = getInterfaceIndexByName(ifr->ifr_name,
&(*ppIpAddrTable)->table[i].dwIndex);
memcpy(&(*ppIpAddrTable)->table[i].dwAddr, ifr->ifr_addr.sa_data + 2,
sizeof(DWORD));
(*ppIpAddrTable)->table[i].dwMask =
getInterfaceMaskByName(ifr->ifr_name);
/* the dwBCastAddr member isn't the broadcast address, it indicates
* whether the interface uses the 1's broadcast address (1) or the
* 0's broadcast address (0).
*/
bcast = getInterfaceBCastAddrByName(ifr->ifr_name);
(*ppIpAddrTable)->table[i].dwBCastAddr =
(bcast & (*ppIpAddrTable)->table[i].dwMask) ? 1 : 0;
/* FIXME: hardcoded reasm size, not sure where to get it */
(*ppIpAddrTable)->table[i].dwReasmSize = 65535;
(*ppIpAddrTable)->table[i].unused1 = 0;
(*ppIpAddrTable)->table[i].wType = 0;
i++;
}
}
else
ret = ERROR_OUTOFMEMORY;
HeapFree(GetProcessHeap(), 0, ifc.ifc_buf);
}
}
return ret;
}
static UCHAR NETBIOS_Enum(PNCB ncb)
{
#ifdef HAVE_NET_IF_H
int sd;
struct ifconf ifc;
int i;
int lastlen, numAddresses = 2;
int ioctlRet = 0;
caddr_t ifPtr;
#endif
LANA_ENUM *lanas = NULL;
if (ncb)
{
lanas = (PLANA_ENUM) ncb->ncb_buffer;
lanas->length = 0;
}
TRACE("NCBENUM\n");
#ifdef HAVE_NET_IF_H
/* BSD 4.4 defines the size of an ifreq to be
* max(sizeof(ifreq), sizeof(ifreq.ifr_name)+ifreq.ifr_addr.sa_len
* However, under earlier systems, sa_len isn't present, so
* the size is just sizeof(struct ifreq)
*/
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
if (sd < 0)
return NRC_OPENERROR;
ifc.ifc_len = 0;
ifc.ifc_buf = NULL;
do {
lastlen = ifc.ifc_len;
HeapFree (GetProcessHeap (), 0, ifc.ifc_buf);
numAddresses *= 2;
ifc.ifc_len = sizeof (struct ifreq) * numAddresses;
ifc.ifc_buf = HeapAlloc (GetProcessHeap (), 0, ifc.ifc_len);
if (!ifc.ifc_buf)
{
close (sd);
return NRC_OPENERROR;
}
ioctlRet = ioctl (sd, SIOCGIFCONF, (char *)&ifc);
} while ((ioctlRet == 0) && (ifc.ifc_len != lastlen));
if (ioctlRet)
{
HeapFree (GetProcessHeap (), 0, ifc.ifc_buf);
close (sd);
return NRC_OPENERROR;
}
/* loop through the interfaces, looking for a valid one */
/* n = ifc.ifc_len; */
ifPtr = ifc.ifc_buf;
i = 0;
while (ifPtr && (ifPtr < (ifc.ifc_buf + ifc.ifc_len)))
{
unsigned char *a = NETBIOS_Adapter[i].address;
struct ifreq ifr, *ifrp;
ifrp = (struct ifreq *)ifPtr;
ifPtr += ifreq_len ((struct ifreq *)ifPtr);
i++;
if (ifrp->ifr_addr.sa_family != AF_INET)
continue;
strncpy(ifr.ifr_name, ifrp->ifr_name, IFNAMSIZ);
/* try to get the address for this interface */
if(get_hw_address(sd, &ifr, a)==0)
{
/* make sure it's not blank */
/* if (!a[0] && !a[1] && !a[2] && !a[3] && !a[4] && !a[5])
continue; */
TRACE("Found valid adapter %d at %02x:%02x:%02x:%02x:%02x:%02x\n", i,
a[0],a[1],a[2],a[3],a[4],a[5]);
if (a[0] || a[1] || a[2] || a[3] || a[4] || a[5])
NETBIOS_Adapter[i - 1].valid = TRUE;
if (lanas)
{
lanas->lana[lanas->length] = i - 1;
lanas->length++;
}
}
}
close(sd);
HeapFree (GetProcessHeap (), 0, ifc.ifc_buf);
#endif /* HAVE_NET_IF_H */
EnumDone = TRUE;
return NRC_GOODRET;
}
