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-rw-r--r--noncore/net/wellenreiter/daemon/source/sniffer.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/noncore/net/wellenreiter/daemon/source/sniffer.c b/noncore/net/wellenreiter/daemon/source/sniffer.c
index 6f40503..31a5d13 100644
--- a/noncore/net/wellenreiter/daemon/source/sniffer.c
+++ b/noncore/net/wellenreiter/daemon/source/sniffer.c
@@ -1,60 +1,57 @@
/* Its just a simple rfmon mode sniffer
i hope my C is at last a bit better then in my
early days :-).
This works only with cisco wireless cards with an rfmon
able driver and not with wifi stuff.
Btw. did i mention that i hate C?
To compile use:
- gcc wlan-sniffer.c -o wlan-sniffer -lpcap
-
- use it like this:
- wlan-sniffer interface
+ gcc sniffer.c -o wlan-sniffer -lpcap
*/
#include "sniffer.h"
int main(int argc, char **argv)
{
int ret; /* return code */
ret = card_into_monitormode (SNIFFER_DEVICE, CARD_TYPE_NG);
if (ret == -1)
{
exit(-1);
}
start_sniffing (SNIFFER_DEVICE);
return 0;
}
int card_into_monitormode (char * device, int cardtype)
{
int ret = -1;
int datalink; /* used for getting the pcap datalink type */
char CiscoRFMON[35] = "/proc/driver/aironet/";
FILE *CISCO_CONFIG_FILE;
char errbuf[PCAP_ERRBUF_SIZE];
pcap_t *handle;
/* Checks if we have a device to sniff on */
if(device == NULL)
{
printf ("Fatal error i did not have any interfaces to sniff on\n");
exit(1);
}
/* Setting the prmiscous and up flag to the interface */
if (card_set_promisc_up (device) == 0)
{
printf ("Interface flags correctly set using ifconfig\n");
}
/* Check the cardtype and executes the commands to go into monitor mode */
if (cardtype == CARD_TYPE_CISCO) /* I got a cisco card */
{
/* bring the sniffer into rfmon mode */
snprintf(CiscoRFMON, sizeof(CiscoRFMON),DEFAULT_PATH, device);
CISCO_CONFIG_FILE = fopen(CiscoRFMON,"w");
fputs ("Mode: r",CISCO_CONFIG_FILE);
fputs ("Mode: y",CISCO_CONFIG_FILE);
fputs ("XmitPower: 1",CISCO_CONFIG_FILE);
@@ -170,97 +167,97 @@ void process_packets(u_char *useless,const struct pcap_pkthdr* pkthdr,const u_ch
pinfoptr->isvalid = 0;
return;
}
/* Decode 802.11b header out of the packet */
if (decode_80211b_hdr(packet,pinfoptr) == 0)
{
/* Justification of the ofset to further process the packet */
length -= HEADER_LENGTH;
caplen -= HEADER_LENGTH;
packet += HEADER_LENGTH;
}
else
{ /* Something is wrong,could not be a correct packet */
return;
}
switch (FC_TYPE(fc))
{
/* Is it a managemnet frame? */
case T_MGMT:
switch (FC_SUBTYPE(fc))
{ /* Is it a beacon frame? */
case ST_BEACON:
if (handle_beacon(fc, packet,pinfoptr) ==0)
{
if (!strcmp(pinfoptr->desthwaddr,"ff:ff:ff:ff:ff:ff") == 0)
{
/* Every beacon must have the broadcast as destination
so it must be a shitti packet */
pinfoptr->isvalid = 0;
return;
}
if (pinfoptr->cap_ESS == pinfoptr->cap_IBSS)
{
/* Only one of both are possible, so must be
a noise packet, if this comes up */
pinfoptr->isvalid = 0;
return;
}
if (pinfoptr->channel < 1 || pinfoptr->channel > 14)
{
/* Only channels between 1 and 14 are possible
others must be noise packets */
pinfoptr->isvalid = 0;
return;
}
- /* Decoding successfull of beacon frame */
+ /* Here should be the infos to the gui issued */
if (pinfoptr->cap_ESS == 1 &&pinfoptr->cap_IBSS ==0)
{
printf ("\nHave found an accesspoint:");
}
else if(pinfoptr->cap_ESS == 0 && pinfoptr->cap_IBSS == 1)
{
printf ("\nHave found an AD-HOC station:");
}
if (strcmp (pinfoptr->ssid,NONBROADCASTING) ==0)
{
printf ("\n\tOn a non-broadcasting network");
}
else
{
printf ("\n\tOn network : %s",pinfoptr->ssid);
}
printf ("\n\tLen SSID : %d",pinfoptr->ssid_len);
printf ("\n\tOn Channel : %d",pinfoptr->channel);
printf ("\n\tEncryption : %s", pinfoptr->cap_WEP ? "ON" : "OFF");
printf ("\n\tMacaddress : %s",pinfoptr->sndhwaddr);
printf ("\n\tBssid : %s",pinfoptr->bssid);
printf ("\n\tDest : %s\n",pinfoptr->desthwaddr);
}
break;
default:
printf("Unknown IEEE802.11 frame subtype (%d)",FC_SUBTYPE(fc));
break;
} /* End of switch over different mgt frame types */
break;
case T_CTRL:
// decode_control_frames(fc, packet);
printf ("Its a control frame");
break;
case T_DATA:
// decode_data_frames(fc, packet);
printf ("Its a date frame");
break;
default:
printf("Unknown IEEE802.11 frame type (%d)",FC_TYPE(fc));
break;
}
}
/* This decodes the 802.11b frame header out of the 802.11b packet
all the infos is placed into the packetinfo structure */