//get net interface info
void getnetinfo(const char *netname, struct str_net_addr *net_info) //ccc
{
struct ifaddrs *ifaces, *ifa;
char abuf[64], mbuf[64], dbuf[64];
if (getifaddrs (&ifaces) < 0)
{
printf ("Couldn't get any interfaces\n");
if(ifaces)
freeifaddrs (ifaces);
return;
}
for (ifa = ifaces; ifa != NULL; ifa = ifa->ifa_next)
{
if(strcmp(ifa->ifa_name, netname)==0)
{
printf ("%-15s%#.4x %-15s %-15s %-15s\n",
ifa->ifa_name, ifa->ifa_flags,
addr_string (ifa->ifa_addr, abuf, sizeof (abuf)),
addr_string (ifa->ifa_netmask, mbuf, sizeof (mbuf)),
addr_string (ifa->ifa_broadaddr, dbuf, sizeof (dbuf)));
str2ip(abuf, net_info->ip);
str2ip(mbuf, net_info->mask);
}
}
freeifaddrs(ifaces);
}
int main(int argc, char *argv[]){
int sockfd, i;
Address a;
setbuf(stdout, NULL);
puts("NIH Proxy");
puts("Specify an HTTP server to connect to");
puts("DNS is too hard; just provide an IP address");
char target[20];
fgets(target, 20, stdin);
char* octet = strtok(target, ".\n");
for(i=0;i<4;i++){
if(!octet) error("Invalid IP address");
a.octets[i] = atoi(octet);
if(a.octets < 0 || a.octets[i] > 256) {
fprintf(stderr, "Invalid host\n");
exit(-1);
}
octet = strtok(NULL, ".\n");
}
filter(&a);
printf("Connecting to %s\n", addr_string(&a));
int sin_addr = 0;
for(i=0; i<4;i++){
sin_addr <<= 8;
sin_addr |= a.octets[i];
}
struct sockaddr_in serv_addr;
sockfd = socket(AF_INET, SOCK_STREAM, 0);
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(80);
serv_addr.sin_addr.s_addr = htonl(sin_addr);
alarm(5);
connect(sockfd,(struct sockaddr *) &serv_addr,sizeof(serv_addr));
char *buf = calloc(256, 1);
int len = sprintf(buf, "GET / HTTP/1.1\nHost: %s\n\n", addr_string(&a));
write(sockfd, buf, len);
int total_len = 0;
while(total_len < 1024*10){
len = read(sockfd, buf, 255);
if(len <= 0) break;
total_len += len;
buf[len] = 0;
fputs(buf, stdout);
if(len < 255) break;
}
close(sockfd);
return 0;
}
U8_EXPORT u8_string u8_sockaddr_string(struct sockaddr *s)
{
if (s->sa_family==AF_INET) {
struct sockaddr_in *inaddr=(struct sockaddr_in *)s;
return addr_string(ntohs(inaddr->sin_port),
(unsigned char *)&(inaddr->sin_addr),4);}
#if HAVE_SYS_UN_H
else if (s->sa_family==AF_UNIX) {
struct sockaddr_un *unaddr=(struct sockaddr_un *)s;
return u8_mkstring("%s@unix",unaddr->sun_path);}
#endif
#ifdef AF_INET6
else if (s->sa_family==AF_INET6) {
struct sockaddr_in6 *inaddr=(struct sockaddr_in6 *)s;
return addr_string(ntohs(inaddr->sin6_port),
(unsigned char *)&(inaddr->sin6_addr),8);}
#endif
else return u8_strdup("strange sockaddr");
}
