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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: %s", strerror(errno));
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;
}
}
return 1;
}
/* Set card into promisc mode */
int card_set_promisc_up (const char *device)
{
struct ifconf ifc;
struct ifreq ifr_x[50];
u_int i;
int sockfd, err;
err=0;
/* opening a socket for issuing the iocalls */
sockfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
if (sockfd < 0)
{
/* In case of an error - mjm proove that please*/
perror("socket");
return 1;
}
/* Define room for 50 interfaces */
ifc.ifc_len = 50 * sizeof(struct ifreq);
ifc.ifc_req = ifr_x;
/* Get the config of the interfaces */
err = ioctl(sockfd, SIOCGIFCONF, &ifc);
if (err == -1) return 1;
/* For each interface*/
for (i = 0; i < ifc.ifc_len / sizeof(struct ifreq); i++)
{
/* To complete , should get the IP, if no is assigned, asign one */
/*err = ioctl(sockfd, SIOCGIFADDR, &ifr_x[i]);
if (err == -1) perror("SIOCGIFADDR: ");
printf ("Address: %s\n",Sock_ntop_host(ifr_x[i].ifr_addr.sa_family,sizeof(ifr_x[i].ifr_addr.sa_family)));
*/
if(strncmp(ifr_x[i].ifr_name,device,5) == 0)
{
/* Get the flags */
err = ioctl(sockfd, SIOCGIFFLAGS, &ifr_x[i]);
if (err == -1)
{
perror("SIOCGIFFLAGS: ");
return 1;
}
/* Check if the Interface is UP and PROMISC */
if (ifr_x[i].ifr_flags & IFF_PROMISC && ifr_x[i].ifr_flags & IFF_UP)
{
/* only debug text */
printf ("%s is PROMISC and UP \n",ifr_x[i].ifr_name);
}
else
{
/* Set the promisc flag to the interface */
ifr_x[i].ifr_flags=ifr_x[i].ifr_flags+IFF_PROMISC;
err = ioctl(sockfd, SIOCSIFFLAGS, &ifr_x[i]);
if (err == -1)
{
/* Could not set the interface into promisc mode */
perror("SIOCSIFFLAGS: ");
}
}
}
}
/* All is fine */
return 0;
}
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