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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
* 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;
}
}
else if (cardtype == CARD_TYPE_ORINOCCO)
{
char lucentcmd[62];
snprintf(lucentcmd, sizeof(lucentcmd) - 1, "$(which iwpriv) %s monitor 2 %d", device, 1);
if (system(lucentcmd) != 0)
{
wl_logerr("Could not set %s in raw mode, check cardtype", device);
return 0;
}
else
{
wl_loginfo("Successfully set %s into raw mode",device);
}
}
/* 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);
pcap_close(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;
}
}
/* Set channel (Wireless frequency) of the device */
int card_set_channel (const char *device, int channel, int cardtype)
{
if (cardtype == CARD_TYPE_CISCO)
{
/* Cisco cards don't need channelswitching */
return 1;
}
/* If it is a lucent orinocco card */
else if (cardtype == CARD_TYPE_ORINOCCO)
{
char lucentreset[63];
char lucentcmd[62];
snprintf(lucentreset, sizeof(lucentreset) -1,"$(which iwpriv) %s force_reset", device);
if (system(lucentreset) != 0)
{
wl_logerr("Could not reset the card %s",device);
return 0;
}
snprintf(lucentcmd, sizeof(lucentcmd) - 1, "$(which iwpriv) %s monitor 2 %d", device, channel);
if (system(lucentcmd) != 0)
{
wl_logerr("Could not set %s in raw mode, check cardtype", device);
return 0;
}
wl_loginfo("Channel %d set on interface %s",channel,device);
return 1;
}
/* For undefined situations */
return 0;
}
|
