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/*
* Startup functions of wellenreiter
*
* $Id$
*/
#include "config.hh"
#include "daemon.hh"
#include "cardmode.hh"
#include "sniffer.hh"
/* Main function of wellenreiterd */
int main(int argc, char **argv)
{
int sock, maxfd;
struct sockaddr_in *cliaddr;
socklen_t len=sizeof(struct sockaddr);
char buffer[128];
pcap_t *handletopcap; /* The handle to the libpcap */
char errbuf[PCAP_ERRBUF_SIZE]; /* The errorbuffer of libpacap */
struct pcap_pkthdr header; /* The packet header from pcap*/
const u_char *packet; /* The actual packet content*/
fd_set rset;
fprintf(stderr, "wellenreiterd %s\n\n", VERSION);
/* will be replaced soon, just for max because max is lazy :-) */
if(card_into_monitormode (SNIFFER_DEVICE, CARD_TYPE_NG) < 0)
{
fprintf(stderr, "Cannot set card into mon mode, aborting\n");
exit(-1);
}
/* opening the pcap for sniffing */
handletopcap = pcap_open_live(SNIFFER_DEVICE, BUFSIZ, 1, 1000, errbuf);
#ifdef HAVE_PCAP_NONBLOCK
pcap_setnonblock(handletopcap, 1, errstr);
#endif
/* Setup socket for incoming commands */
if((sock=commsock(DAEMONADDR, DAEMONPORT)) < 0)
{
wl_logerr("Cannot setup socket");
exit(-1);
}
wl_loginfo("Set up socket '%d' for GUI communication", sock);
FD_ZERO(&rset);
/* Start main loop */
wl_loginfo("Starting main loop");
while(1)
{
FD_SET(sock, &rset);
FD_SET(pcap_fileno(handletopcap), &rset);
maxfd=sock + pcap_fileno(handletopcap) + 1;
if(select(maxfd, &rset, NULL, NULL, NULL) < 0)
{
wl_logerr("Error calling select: %s", strerror(errno));
break;
}
/* Got data on local socket from GUI */
if(FD_ISSET(sock, &rset))
{
memset(buffer, 0, sizeof(buffer));
if(recvfrom(sock, buffer, sizeof(buffer)-1, 0, (struct sockaddr *)cliaddr, &len) < 0)
{
wl_logerr("Cannot read from socket: %s", strerror(errno));
break;
}
wl_loginfo("Received command from '%s': %s", inet_ntoa(cliaddr->sin_addr), buffer);
/* will be passed to analyze function */
fprintf(stderr, "Received command: %s\n", buffer);
}
/* Pcap stuff */
if(FD_ISSET(pcap_fileno(handletopcap), &rset))
{
/* Grab one single packet */
packet = pcap_next(handletopcap, &header);
/* process the packet */
process_packets(NULL,&header,*&packet);
}
}
close(sock);
exit(0);
}
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