//
// Supernode udp user request
//
int snode_udp_reqsearch(char *destip, u16 destport, char *our_public_ip, char *skypeuser) {
u16 seqnum;
u32 rnd;
char resp[0x1000];
int resp_len;
char pkt[0x1000];
int pkt_len;
int retcode;
char *mainbuf;
u32 mainbuf_len;
u32 mainbuf_alloc;
mainbuf=malloc(0x1000);
mainbuf_len=0;
mainbuf_alloc=0x1000;
seqnum=rand() % 0x10000;
rnd=rand() % 0x10000;
rnd+=(rand() % 0x10000)*0x10000;
// pkt1
retcode=make_udp_profile_pkt1(our_public_ip,destip,seqnum,rnd,skypeuser,(char *)pkt,&pkt_len);
if (retcode==-1) {
//printf("prepare error\n");
free(mainbuf);
return -1;
};
resp_len=udp_talk(destip,destport,pkt,pkt_len,resp,sizeof(resp));
if (resp_len<0) {
//printf("socket comm error\n");
free(mainbuf);
return -1;
};
if (resp_len==0) {
//printf("timeout\n");
free(mainbuf);
return -2;
};
retcode=process_udp_search_pkt1(resp,resp_len,our_public_ip,destip, mainbuf, &mainbuf_len);
if (retcode==-1) {
//printf("not skype\n");
free(mainbuf);
return -3;
};
mainbuf_alloc+=0x1000;
mainbuf=realloc(mainbuf,mainbuf_alloc);
do {
resp_len=udp_recv(destip,destport,resp,sizeof(resp));
if (resp_len<0) {
//printf("socket comm error\n");
//return -1;
break;
};
if (resp_len==0) {
//printf("timeout\n");
//return -2;
if (mainbuf_len<0x188){
free(mainbuf);
return -2;
};
break;
};
retcode=process_udp_search_pkt1(resp,resp_len,our_public_ip,destip, mainbuf, &mainbuf_len);
if (retcode==-1) {
//printf("not skype\n");
//return -3;
break;
};
mainbuf_alloc+=0x1000;
mainbuf=realloc(mainbuf,mainbuf_alloc);
} while(resp_len>0);
get_profiles(mainbuf, mainbuf_len);
main_unpack(mainbuf, mainbuf_len);
if (0){
u32 last_recv_pkt_num;
process_pkt(mainbuf, mainbuf_len, 1, &last_recv_pkt_num);
};
free(mainbuf);
//printf("our public ip: %s\n",our_public_ip);
//printf("this is supernode\n");
return 1;
}
bool application::has_profile()const
{
return get_profiles().size() != 0;
}
