1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* Set card modes for sniffing
*
* $Id$
*/
#include "cardmode.hh"
/* main card into monitor function */
int card_into_monitormode (void *orighandle, char *device, int cardtype)
{
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;
handle = (pcap_t *)orighandle;
/* Checks if we have a device to sniff on */
if(device == NULL)
{
wl_logerr("No device given");
return 0;
}
/* Setting the prmiscous 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), 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), "%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");
}
/* Check the interface if it is in the correct raw mode */
if((handle = pcap_open_live(device, BUFSIZ, 1, 0, errbuf)) == NULL)
{
wl_logerr("pcap_open_live() failed: %s", strerror(errno));
return 0;
}
#ifdef HAVE_PCAP_NONBLOCK
pcap_setnonblock(handle, 1, errstr);
#endif
/* getting the datalink type */
datalink = pcap_datalink(handle);
if (datalink != DLT_IEEE802_11) /* Rawmode is IEEE802_11 */
{
wl_loginfo("Interface %s does not work in the correct 802.11 raw mode", device);
pcap_close(handle);
return 0;
}
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)
{
char ifconfigcmd[32];
int retval=0;
snprintf(ifconfigcmd, sizeof(ifconfigcmd), SBIN_PATH, device);
retval = system(ifconfigcmd);
if(retval < 0 || retval == 0)
return 0;
return 1;
}
|