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auto detect device

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wangyu- 2018-06-17 04:18:33 -05:00
parent 62e78999de
commit f43598b423
1 changed files with 60 additions and 20 deletions
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80
main.cpp
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@ -778,11 +778,68 @@ int client_event_loop()
}
}
in_addr tmp;
tmp.s_addr=source_ip_uint32;
mylog(log_info,"source ip = %s\n",inet_ntoa(tmp));
//in_addr tmp;
//tmp.s_addr=source_ip_uint32;
mylog(log_info,"source ip = %s\n",my_ntoa(source_ip_uint32));
//printf("done\n");
if(strcmp(dev,"")==0)
{
mylog(log_info,"--dev have not been set, trying to detect automatically, avaliable deives:\n",dev);
mylog(log_info,"avaliable deives(and ip address):\n");
char errbuf[PCAP_ERRBUF_SIZE];
int found=0;
pcap_if_t *interfaces,*d;
if(pcap_findalldevs(&interfaces,errbuf)==-1)
{
mylog(log_fatal,"error in pcap_findalldevs(),%s\n",errbuf);
myexit(-1);
}
for(pcap_if_t *d=interfaces; d!=NULL; d=d->next) {
log_bare(log_info,"%s:", d->name);
int cnt=0;
for(pcap_addr_t *a=d->addresses; a!=NULL; a=a->next) {
if(a->addr->sa_family == AF_INET)
{
cnt++;
log_bare(log_info," [%s]", inet_ntoa(((struct sockaddr_in*)a->addr)->sin_addr));
if(((struct sockaddr_in*)a->addr)->sin_addr.s_addr ==source_ip_uint32)
{
found++;
strcpy(dev,d->name);
}
}
}
if(cnt==0) log_bare(log_info," (no ip found)");
log_bare(log_info,"\n");
}
if(found==0)
{
mylog(log_fatal,"no matched device found for ip: [%s]\n",my_ntoa(source_ip_uint32));
myexit(-1);
}
else if(found==1)
{
mylog(log_info,"using device:[%s], ip: [%s]\n",dev,my_ntoa(source_ip_uint32));
}
else
{
mylog(log_fatal,"more than one devices found for ip: [%s] , you need to use --dev manually\n",my_ntoa(source_ip_uint32));
myexit(-1);
}
}
else
{
mylog(log_info,"--dev has been manually set, using device:[%s]\n",dev);
}
if(try_to_list_and_bind(bind_fd,local_ip_uint32,source_port)!=0)
{
@ -973,23 +1030,6 @@ void sigint_cb(struct ev_loop *l, ev_signal *w, int revents)
int main(int argc, char *argv[])
{
int i=0;
char errbuf[PCAP_ERRBUF_SIZE];
pcap_if_t *interfaces,*d;
if(pcap_findalldevs(&interfaces,errbuf)==-1)
{
printf("\nerror in pcap findall devs");
return -1;
}
for(pcap_if_t *d=interfaces; d!=NULL; d=d->next) {
printf("%s:", d->name);
for(pcap_addr_t *a=d->addresses; a!=NULL; a=a->next) {
if(a->addr->sa_family == AF_INET)
printf(" %s", inet_ntoa(((struct sockaddr_in*)a->addr)->sin_addr));
}
printf("\n");
}
//libnet_t *l; /* the libnet context */
//char errbuf[LIBNET_ERRBUF_SIZE];