void *thread_proc(void *param) {
// IP address is our parameter.
sniffer_data *data = (sniffer_data*)param;
Sniffer *sniffer = data->first;
sniffer->set_filter("tcp and ip src " + data->second + " and tcp[tcpflags] & (tcp-rst|tcp-syn) != 0");
// Sniff loop. Only sniff TCP PDUs comming from the given IP and have either RST or SYN flag on.
sniffer->sniff_loop(handler);
return 0;
}
void SnifferConfiguration::configure_sniffer_post_activation(Sniffer& sniffer) const
{
if ((_flags & PACKET_FILTER) != 0) {
if (!sniffer.set_filter(_filter)) {
throw std::runtime_error("Could not set the filter! ");
}
}
if (!sniffer.set_direction(_direction)) {
throw std::runtime_error("Could not set the direction! ");
}
}
void SnifferConfiguration::configure_sniffer_post_activation(Sniffer& sniffer) const {
if ((flags_ & PACKET_FILTER) != 0) {
if (!sniffer.set_filter(filter_)) {
throw invalid_pcap_filter(pcap_geterr(sniffer.get_pcap_handle()));
}
}
// TODO: see how to actually do this on winpcap
#ifndef _WIN32
if ((flags_ & DIRECTION) != 0) {
if (!sniffer.set_direction(direction_)) {
throw pcap_error(pcap_geterr(sniffer.get_pcap_handle()));
}
}
#endif // _WIN32
}
