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/*
* Set card modes for sniffing
*
* $Id$
*/
#include "cardmode.hh"
#include "wl_log.hh"
/* main card into monitor function */
int card_into_monitormode (pcap_t **orighandle, char *device, int cardtype)
{
char CiscoRFMON[35] = "/proc/driver/aironet/";
FILE *CISCO_CONFIG_FILE;
/* Checks if we have a device to sniff on */
if(device == NULL)
{
wl_logerr("No device given");
return 0;
}
/* Setting the promiscous and up flag to the interface */
if (!card_set_promisc_up(device))
{
wl_logerr("Cannot set interface to promisc mode");
return 0;
}
wl_loginfo("Interface set to promisc mode");
/* Check the cardtype and executes the commands to go into monitor mode */
if (cardtype == CARD_TYPE_CISCO)
{
/* bring the sniffer into rfmon mode */
snprintf(CiscoRFMON, sizeof(CiscoRFMON) - 1, DEFAULT_PATH, device);
if((CISCO_CONFIG_FILE = fopen(CiscoRFMON,"w")) == NULL)
{
wl_logerr("Cannot open config file: %s", strerror(errno));
return 0;
}
fputs ("Mode: r",CISCO_CONFIG_FILE);
fputs ("Mode: y",CISCO_CONFIG_FILE);
fputs ("XmitPower: 1",CISCO_CONFIG_FILE);
fclose(CISCO_CONFIG_FILE);
}
else if (cardtype == CARD_TYPE_NG)
{
char wlanngcmd[62];
snprintf(wlanngcmd, sizeof(wlanngcmd) - 1, "%s %s lnxreq_wlansniff channel=1 enable=true", WLANCTL_PATH, device);
if (system(wlanngcmd) != 0)
{
wl_logerr("Could not set %s in raw mode, check cardtype", device);
return 0;
}
}
else if (cardtype == CARD_TYPE_HOSTAP)
{
wl_logerr("Got a host-ap card, nothing is implemented now");
char hostapcmd[250];
snprintf(hostapcmd, sizeof(hostapcmd) -1, "%s %s monitor 2", IWPRIV_PATH, device);
if (system(hostapcmd) !=0)
{
wl_logerr("Could not set %s in raw mode, check cardtype", device);
return 0;
}
}
/* Setting the promiscous and up flag to the interface */
if (!card_check_rfmon_datalink(device))
{
wl_logerr("Cannot set interface to rfmon mode");
return 0;
}
else
{
wl_loginfo("Interface set to rfmon mode");
}
return 1;
}
/* Check card is in the rfmon mode */
int card_check_rfmon_datalink (char *device)
{
int datalinktype=0;
pcap_t *phandle;
phandle = pcap_open_live(device, 65,0,0,NULL);
datalinktype = pcap_datalink (phandle);
if (datalinktype != DLT_IEEE802_11) /* Rawmode is IEEE802_11 */
{
return 0;
}
else
{
wl_loginfo("Your successfully listen on %s in 802.11 raw mode", device);
return 1;
}
}
/* Set card into promisc mode */
int card_set_promisc_up (const char *device)
{
int err;
/* First generate a socket to use with iocalls */
int fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0)
{
/* In case of an error */
perror("socket");
return 0;
}
/* Fill an empty an interface structure with the right flags (UP and Promsic) */
struct ifreq ifr;
strncpy(ifr.ifr_name, device,10);
ifr.ifr_flags = IFF_UP + IFF_PROMISC;
err = ioctl(fd, SIOCSIFFLAGS, &ifr);
if (err < 0)
{
perror("Could not access the interface, ");
return 0;
}
/* Get the informations back from the interface to check if the flags are correct */
strncpy(ifr.ifr_name, device,10);
ioctl(fd, SIOCGIFFLAGS, &ifr);
if (err < 0)
{
perror("Could not access the interface, ");
return 0;
}
if(ifr.ifr_flags && IFF_UP)
{
printf("%s is ok\n", device);
return 1;
}
else
{
printf("%s flags could not be set", device);
return 0;
}
}
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