| -rw-r--r-- | noncore/net/wellenreiter/daemon/source/daemon.cc | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/noncore/net/wellenreiter/daemon/source/daemon.cc b/noncore/net/wellenreiter/daemon/source/daemon.cc index 51c2194..d6e8f6b 100644 --- a/noncore/net/wellenreiter/daemon/source/daemon.cc +++ b/noncore/net/wellenreiter/daemon/source/daemon.cc @@ -1,136 +1,157 @@ /* * Startup functions of wellenreiter * * $Id$ */ #include "config.hh" #include "daemon.hh" +// temporary solution, will be removed soon +#define MAXCHANNEL 13 +char sniffer_device[6]; +int channel=0; +int timedout=1; + +static int chanswitch() +{ + if(channel >= MAXCHANNEL) + channel=1 + card_set_channel(sniffer_device, channel, card_type); + timedout=0; +} + /* Main function of wellenreiterd */ int main(int argc, char **argv) { int sock, maxfd, retval, card_type; - char buffer[WL_SOCKBUF], sniffer_device[6]; + char buffer[WL_SOCKBUF]; struct pcap_pkthdr header; struct sockaddr_in saddr; pcap_t *handletopcap; const unsigned char *packet; fd_set rset; fprintf(stderr, "wellenreiterd %s\n\n", VERSION); fprintf(stderr, "(c) 2002 by M-M-M\n\n"); if(argc < 3) usage(); + // removed soon, see above + SIGNAL(SIGALRM, chanswitch); + /* Set sniffer device */ memset(sniffer_device, 0, sizeof(sniffer_device)); strncpy(sniffer_device, (char *)argv[1], sizeof(sniffer_device) - 1); /* Set card type */ card_type = atoi(argv[2]); if(card_type < 1 || card_type > 3) usage(); if(!card_into_monitormode(&handletopcap, sniffer_device, card_type)) { wl_logerr("Cannot initialize the wireless-card, aborting"); exit(-1); } wl_loginfo("Set card into monitor mode"); /////// following line will be moved to lib as soon as possible //////////// if((handletopcap = pcap_open_live(sniffer_device, BUFSIZ, 1, 0, NULL)) == NULL) { wl_logerr("pcap_open_live() failed: %s", strerror(errno)); exit(-1); } #ifdef HAVE_PCAP_NONBLOCK pcap_setnonblock(handletopcap, 1, NULL); #endif //////////////////////////////////////// /* Setup socket for incoming commands */ if((sock=wl_setupsock(DAEMONADDR, DAEMONPORT, saddr)) < 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); + // blah + timedout=1; + alarm(1); + /* socket or pcap handle bigger? Will be cleaned up, have to check pcap */ maxfd = (sock > pcap_fileno(handletopcap) ? sock : pcap_fileno(handletopcap)) + 1; - if(select(maxfd, &rset, NULL, NULL, NULL) < 0) + if(select(maxfd, &rset, NULL, NULL, NULL) < 0 && timedout) { wl_logerr("Error calling select: %s", strerror(errno)); break; } /* Got data on local socket from GUI */ if(FD_ISSET(sock, &rset)) { /* Receive data from socket */ - if((retval=wl_recv(&sock, saddr, buffer, sizeof(buffer))) < 0) + if((retval=wl_recv(&sock, saddr, buffer, sizeof(buffer))) < 0 && timedout) { wl_logerr("Error trying to read: %s", strerror(errno)); break; } else { /* check type of packet and start function according to it */ switch(retval) { case 98: wl_loginfo("Received STARTSNIFF command"); break; case 99: wl_loginfo("Received STOPSNIFF command"); break; default: wl_logerr("Received unknown command: %d", retval); break; } } } /* FD_ISSET */ /* Check pcap lib for packets */ if(FD_ISSET(pcap_fileno(handletopcap), &rset)) { /* Grab one single packet */ packet = pcap_next(handletopcap, &header); /* process the packet */ process_packets(&header,*&packet, GUIADDR, GUIPORT); } } /* while(1) */ close(sock); exit(0); } void usage(void) { fprintf(stderr, "Usage: wellenreiter <device> <cardtype>\n" \ "\t<device> = Wirelessdevice (e.g. wlan0)\n" \ "\t<cardtype> = Cardtype:\t Cisco\t= 1\n" \ "\t\t\t\tNG\t= 2\n" \ "\t\t\t\tHOSTAP\t= 3\n"); exit(-1); } |