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-rw-r--r--noncore/net/wellenreiter/daemon/source/daemon.cc47
1 files changed, 25 insertions, 22 deletions
diff --git a/noncore/net/wellenreiter/daemon/source/daemon.cc b/noncore/net/wellenreiter/daemon/source/daemon.cc
index 4407436..5cf4e97 100644
--- a/noncore/net/wellenreiter/daemon/source/daemon.cc
+++ b/noncore/net/wellenreiter/daemon/source/daemon.cc
@@ -9,167 +9,170 @@
/* should be parsed from cfg-file */
#define MAXCHANNEL 13
#define CHANINTERVAL 100000
/* 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();
- if(!card_into_monitormode(&handletopcap, cardtype.iface, cardtype.type))
+ /* 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");
-
- /////// following line will be moved to lib as soon as possible ////////////
- if((handletopcap = pcap_open_live(cardtype.iface, BUFSIZ, 1, 0, NULL)) == NULL)
- {
- wl_logerr("pcap_open_live() failed: %s", strerror(errno));
- exit(EXIT_FAILURE);
- }
-
+ /* 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);
+ 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)
+ 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);
- /* socket or pcap handle bigger? Will be cleaned up, have to check pcap */
- maxfd = (sock > pcap_fileno(handletopcap) ? sock + 1: pcap_fileno(handletopcap)) + 1;
+ /* 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;
+ wl_loginfo("Received STOPSNIFF command");
+ break;
default:
- wl_logerr("Received unknown command: %d", retval);
- break;
+ 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)
+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 channel=1;
/* Get card info struct */
cardtype = (wl_cardtype_t *)cardtypeptr;
while(1)
{
/* If channel bigger than maxchannel, set to 1 */
if(channel > MAXCHANNEL)