int main(int argc, char **argv)
{
message_init();
lift_pid = fork();
if(!lift_pid) {
lift_process();
}
liftmove_pid = fork();
if(!liftmove_pid){
liftmove_process();
}
int current_person_id = 0;
int j;
for(j = 0; j < MAX_N_PERSONS; j++){
pid_t tmp_pid = fork();
if (tmp_pid == 0){
person_process(current_person_id);
} else{
person_pid[current_person_id] = tmp_pid;
current_person_id ++;
}
}
result_process();
return 0;
}
static void search_process(u_char *user, const struct pcap_pkthdr *h, const u_char *bytes) {
struct search_context *ctx = (struct search_context *)user;
struct radiotap_header *rt;
struct IEEE_802_11_header *wifi;
struct ssid_param *ssid_p;
(void)h;
rt = (struct radiotap_header *)bytes;
wifi = (struct IEEE_802_11_header *)((uint8_t *)bytes + rt->len);
if (wifi->type == BEACON_TYPE) {
ssid_p = (struct ssid_param *)((uint8_t *)wifi + sizeof(struct IEEE_802_11_header) + MGMT_SSID_OFFSET);
if (strlen(ctx->ssid) != ssid_p->ssid_len) // check SSID length
return;
if (strncmp(ctx->ssid, (char *)&ssid_p->ssid, ssid_p->ssid_len)) // check SSID contents
return;
memcpy(ctx->bssid, wifi->bssid, MAC_ADDRESS_LENGTH); // capture BSSID of access-point
}
if (wifi->type == DATA_TYPE) {
if ( (!memcmp(wifi->dest_addr, ctx->bssid, MAC_ADDRESS_LENGTH)) ||
(!memcmp(wifi->src_addr, ctx->bssid, MAC_ADDRESS_LENGTH)) ||
(!memcmp(wifi->bssid, ctx->bssid, MAC_ADDRESS_LENGTH)) ) {
if (memcmp(wifi->dest_addr, ctx->bssid, MAC_ADDRESS_LENGTH))
result_process(ctx->results, wifi->dest_addr);
else if (memcmp(wifi->src_addr, ctx->bssid, MAC_ADDRESS_LENGTH))
result_process(ctx->results, wifi->src_addr );
else
result_process(ctx->results, wifi->bssid );
}
}
}
