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-rw-r--r--noncore/net/wellenreiter/daemon/source/daemon.cc18
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 */
}