void wpcap_init(void)
{
struct in_addr addr;
FARPROC dlladdr;
addr.s_addr = htonl(WCAP_IPADDR);
printf("wpcap_init: IP address: %s\n", inet_ntoa(addr));
wpcap = LoadLibrary("wpcap.dll");
dlladdr = GetProcAddress(wpcap, "pcap_findalldevs");
pcap_findalldevs = (pcap_findalldevs_t)dlladdr;
dlladdr = GetProcAddress(wpcap, "pcap_open_live");
pcap_open_live = (pcap_open_live_t)dlladdr;
dlladdr = GetProcAddress(wpcap, "pcap_next_ex");
pcap_next_ex = (pcap_next_ex_t)dlladdr;
dlladdr = GetProcAddress(wpcap, "pcap_sendpacket");
pcap_sendpacket = (pcap_sendpacket_t)dlladdr;
if (pcap_findalldevs == NULL || pcap_open_live == NULL ||
pcap_next_ex == NULL || pcap_sendpacket == NULL)
{
error_exit("error on access to winpcap library\n");
}
init_pcap(addr);
set_ethaddr(addr);
}
/*---------------------------------------------------------------------------*/
void
wpcap_init(void)
{
struct in_addr addr;
addr.s_addr = inet_addr((*__argv)[1]);
if(addr.s_addr == INADDR_NONE) {
error_exit("usage: <program> <ip addr of ethernet card to share>\n");
}
printf("wpcap_init: cmdline address: %s\n", inet_ntoa(addr));
wpcap = LoadLibrary("wpcap.dll");
(FARPROC)pcap_findalldevs = GetProcAddress(wpcap, "pcap_findalldevs");
(FARPROC)pcap_open_live = GetProcAddress(wpcap, "pcap_open_live");
(FARPROC)pcap_next_ex = GetProcAddress(wpcap, "pcap_next_ex");
(FARPROC)pcap_sendpacket = GetProcAddress(wpcap, "pcap_sendpacket");
if(pcap_findalldevs == NULL || pcap_open_live == NULL ||
pcap_next_ex == NULL || pcap_sendpacket == NULL) {
error_exit("error on access to winpcap library\n");
}
init_pcap(addr);
set_ethaddr(addr);
}
/*---------------------------------------------------------------------------*/
void
wpcap_init(void)
{
struct in_addr addr;
#ifdef __CYGWIN__
addr.s_addr = inet_addr((*__argv)[1]);
#else /* __CYGWIN__ */
addr.s_addr = inet_addr(__argv[1]);
#endif /* __CYGWIN__ */
if(addr.s_addr == INADDR_NONE) {
// error_exit("usage: <program> <ip addr of ethernet card to share>\n");
addr.s_addr = inet_addr("10.10.10.10");
log_message("usage: <program> <ip addr of ethernet card to share>\n-->I'll try guessing ", inet_ntoa(addr));
} else {
log_message("wpcap_init:cmdline address: ", inet_ntoa(addr));
}
wpcap = LoadLibrary("wpcap.dll");
pcap_findalldevs = (int (*)(struct pcap_if **, char *))
GetProcAddress(wpcap, "pcap_findalldevs");
pcap_open_live = (struct pcap *(*)(char *, int, int, int, char *))
GetProcAddress(wpcap, "pcap_open_live");
pcap_next_ex = (int (*)(struct pcap *, struct pcap_pkthdr **, unsigned char **))
GetProcAddress(wpcap, "pcap_next_ex");
pcap_sendpacket = (int (*)(struct pcap *, unsigned char *, int))
GetProcAddress(wpcap, "pcap_sendpacket");
if(pcap_findalldevs == NULL || pcap_open_live == NULL ||
pcap_next_ex == NULL || pcap_sendpacket == NULL) {
error_exit("error on access to winpcap library\n");
}
init_pcap(addr);
set_ethaddr(addr);
}
/*---------------------------------------------------------------------------*/
static void
init_pcap(struct in_addr addr)
{
struct pcap_if *interfaces;
struct pcap_addr *paddr;
char error[256];
if(pcap_findalldevs(&interfaces, error) == -1) {
error_exit(error);
}
while(interfaces != NULL) {
log_message("init_pcap: found interface: ", interfaces->description);
if(interfaces->addresses != NULL) {
for(paddr = interfaces->addresses;
paddr != NULL;
paddr = paddr->next) {
if(paddr->addr != NULL && paddr->addr->sa_family == AF_INET) {
struct in_addr interface_addr;
interface_addr = ((struct sockaddr_in *)paddr->addr)->sin_addr;
log_message("init_pcap: with address: ", inet_ntoa(interface_addr));
if(interface_addr.s_addr == addr.s_addr) {
pcap = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
if(pcap == NULL) {
error_exit(error);
}
#ifdef UIP_FALLBACK_INTERFACE
log_message("init_pcap: Opened as primary interface","");
#endif
// pcap_setdirection(PCAP_D_IN); //Not implemented in windows yet?
set_ethaddr(addr);
#ifdef UIP_FALLBACK_INTERFACE
}
if (pfall && pcap) return;
if(interface_addr.s_addr == addrfall.s_addr) {
pfall = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
if(pfall == NULL) {
error_exit(error);
}
log_message("init_pcap: Opened as fallback interface","");
if (pcap) return;
}
#else
return;
}
#endif
#if UIP_CONF_IPV6
}
else if(paddr->addr != NULL && paddr->addr->sa_family == AF_INET6) {
struct in6_addr interface_addr;
interface_addr = ((struct sockaddr_in6 *)paddr->addr)->sin6_addr;
sprint_ip6addr(interface_addr, addr6str);
log_message("init_pcap: with ipv6 address: ", addr6str);
if (issame_ip6addr(interface_addr, addr6)) {
pcap = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
if(pcap == NULL) {
error_exit(error);
}
#ifdef UIP_FALLBACK_INTERFACE
log_message("init_pcap: Opened as primary interface","");
#endif
set_ethaddr6(addr6);
// pcap_setdirection(PCAP_D_IN); //Not implemented in windows yet?
#ifdef UIP_FALLBACK_INTERFACE
}
if (pfall && pcap) return; //exit when we have both interfaces
if (issame_ip6addr(interface_addr, addrfall6)) {
pfall = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
if(pfall == NULL) {
error_exit(error);
}
log_message("init_pcap: Opened as fallback interface","");
if (pcap) return;
}
#else
return;
}
#endif
#endif /* UIP_CONF_IPV6 */
}
}
