void DummyInterface::forgeFlow(u_int iteration) {
char payload[256];
u_int32_t srcIp = 0xC0A80000;
u_int32_t dstIp = 0x0A000000;
u_int id, mval = 1+(ntop->getPrefs()->get_max_num_hosts()/ntop->getPrefs()->get_max_num_flows());
time_t now = time(NULL);
id = iteration % ntop->getPrefs()->get_max_num_hosts();
srcIp += id, dstIp += id;
for(u_int i=0; i<mval; i++) {
char a[32], b[32];
u_int16_t sport = 1234+i, dport = 80;
snprintf(payload, sizeof(payload),
"{\"8\":\"%s\",\"12\":\"%s\",\"10\":0,\"14\":0,\"2\":%u,\"1\":%u,\"22\":%lu,\"21\":%lu,\"7\":%u,\"11\":%u,\"6\":0,\"4\":17,\"5\":0,\"16\":0,\"17\":0,\"9\":0,\"13\":0,\"42\":297}",
Utils::intoaV4(srcIp, a, sizeof(a)),
Utils::intoaV4(dstIp, b, sizeof(b)),
iteration, iteration*1500,
now-60, now, sport, dport);
parse_flows(payload, sizeof(payload), 1 /* source_id */, this /* iface */);
}
if(id == 0) sleep(1);
}
int HistoricalInterface::sqlite_callback(void *data, int argc,
char **argv, char **azColName) {
for(int i=0; i<argc; i++) {
// Inject only the json information
if ( (strcmp( (const char*)azColName[i], "json") == 0 ) &&
(char*)(argv[i]) ) {
parse_flows( (char*)(argv[i]) , sizeof((char*)(argv[i])) , 0, data);
}
}
return(0);
}
void CollectorInterface::collect_flows() {
struct zmq_msg_hdr h;
char payload[8192];
u_int payload_len = sizeof(payload)-1;
zmq_pollitem_t items[CONST_MAX_NUM_ZMQ_SUBSCRIBERS];
int rc, size;
ntop->getTrace()->traceEvent(TRACE_NORMAL, "Collecting flows on %s", ifname);
while(isRunning()) {
while(idle()) {
purgeIdle(time(NULL));
sleep(1);
if(ntop->getGlobals()->isShutdown()) return;
}
for(int i=0; i<num_subscribers; i++)
items[i].socket = subscriber[i].socket, items[i].fd = 0, items[i].events = ZMQ_POLLIN, items[i].revents = 0;
do {
rc = zmq_poll(items, num_subscribers, 1000 /* 1 sec */);
if((rc < 0) || (!isRunning())) return;
if(rc == 0) purgeIdle(time(NULL));
} while(rc == 0);
for(int source_id=0; source_id<num_subscribers; source_id++) {
if(items[source_id].revents & ZMQ_POLLIN) {
size = zmq_recv(items[source_id].socket, &h, sizeof(h), 0);
if((size != sizeof(h)) || (h.version != MSG_VERSION)) {
ntop->getTrace()->traceEvent(TRACE_WARNING,
"Unsupported publisher version [%d]: your nProbe sender is outdated?",
h.version);
continue;
}
size = zmq_recv(items[source_id].socket, payload, payload_len, 0);
if(size > 0) {
payload[size] = '\0';
parse_flows(payload, sizeof(payload) , source_id, this);
ntop->getTrace()->traceEvent(TRACE_INFO, "[%u] %s", h.size, payload);
}
}
} /* for */
}
ntop->getTrace()->traceEvent(TRACE_NORMAL, "Flow collection is over.");
}
