-rw-r--r-- | noncore/net/wellenreiter/daemon/source/daemon.cc | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/noncore/net/wellenreiter/daemon/source/daemon.cc b/noncore/net/wellenreiter/daemon/source/daemon.cc index d77d987..3a28217 100644 --- a/noncore/net/wellenreiter/daemon/source/daemon.cc +++ b/noncore/net/wellenreiter/daemon/source/daemon.cc @@ -1,202 +1,206 @@ /* * Startup functions of wellenreiter * * $Id$ */ #include "config.hh" #include "daemon.hh" /* should be parsed from cfg-file */ #define MAXCHANNEL 13 #define CHANINTERVAL 500000 /* Main function of wellenreiterd */ int main(int argc, char **argv) { int sock, maxfd, retval; char buffer[WL_SOCKBUF]; struct pcap_pkthdr header; struct sockaddr_in saddr; pcap_t *handletopcap; wl_cardtype_t cardtype; pthread_t sub; 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(); /* Set sniffer device */ memset(cardtype.iface, 0, sizeof(cardtype.iface)); strncpy(cardtype.iface, (char *)argv[1], sizeof(cardtype.iface) - 1); /* Set card type */ cardtype.type = atoi(argv[2]); if(cardtype.type < 1 || cardtype.type > 4) usage(); /* set card into monitor mode */ if(!card_into_monitormode(&handletopcap, cardtype.iface, cardtype.type)) { wl_logerr("Cannot initialize the wireless-card, aborting"); exit(EXIT_FAILURE); } wl_loginfo("Set card into monitor mode"); /* setup pcap */ if((handletopcap = pcap_open_live(cardtype.iface, BUFSIZ, 1, 0, NULL)) == NULL) { wl_logerr("pcap_open_live() failed: %s", strerror(errno)); exit(EXIT_FAILURE); } #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(EXIT_FAILURE); } wl_loginfo("Set up socket '%d' for GUI communication", sock); /* Create channelswitching thread */ if(pthread_create(&sub, NULL, channel_switcher, (void *)&cardtype) != 0) { wl_logerr("Cannot create thread: %s", strerror(errno)); close(sock); exit(EXIT_FAILURE); } if(pthread_detach(sub)) { wl_logerr("Error detaching thread"); close(sock); pthread_exit((pthread_t *)sub); exit(EXIT_FAILURE); } wl_loginfo("Created and detached channel switching thread"); FD_ZERO(&rset); /* Start main loop */ wl_loginfo("Starting main loop"); while(1) { FD_SET(sock, &rset); FD_SET(pcap_fileno(handletopcap), &rset); /* maxfd = biggest filefd */ maxfd = (sock > pcap_fileno(handletopcap) ? sock + 1 : 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)) { /* Receive data from socket */ if((retval=wl_recv(&sock, saddr, buffer, sizeof(buffer))) < 0) { 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: + case STARTSNIFF: + wl_loginfo("Received STARTSNIFF command"); + if(!send_ok(GUIADDR, GUIPORT, STARTSNIFF)) + wl_logerr("Cannot set OK_CMD to GUI"); + break; + case STOPSNIFF: + wl_loginfo("Received STOPSNIFF command"); + if(!send_ok(GUIADDR, GUIPORT, STOPSNIFF)) + wl_logerr("Cannot set FAIL_CMD to GUI"); + 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(EXIT_SUCCESS); } void usage(void) { fprintf(stderr, "Usage: wellenreiter <device> <cardtype>\n" \ "\t<device> = Wirelessdevice (e.g. wlan0)\n" \ "\t<cardtype> = Cardtype:\tCisco\t= 1\n" \ "\t\t\t\tNG\t= 2\n" \ "\t\t\t\tHOSTAP\t= 3\n" \ "\t\t\t\tLUCENT\t= 4\n"); exit(EXIT_FAILURE); } void * channel_switcher(void *cardtypeptr) { wl_cardtype_t *cardtype; int maxchan=0; int channel=1; /* Get card info struct */ cardtype = (wl_cardtype_t *)cardtypeptr; /* Get from the wireless extension the amount of available channels this prevents a fail in switching on us cards */ maxchan = card_detect_channels(cardtype->iface); if (maxchan < MAXCHANNEL) { #undef MAXCHANNEL #define MAXCHANNEL maxchan } while(1) { /* If channel bigger than maxchannel, set to 1 */ if(channel > MAXCHANNEL) channel=1; /* Set channel */ if(!card_set_channel(cardtype->iface, channel, cardtype->type)) { wl_logerr("Cannot set channel, thread exiting"); pthread_exit(NULL); } /* sleep */ usleep(CHANINTERVAL); channel++; } /* while */ } |