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
|
/*
Mac-Telnet - Connect to RouterOS routers via MAC address
Copyright (C) 2010, Håkon Nessjøen <haakon.nessjoen@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <netinet/in.h>
#include <linux/if_ether.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <malloc.h>
#include <ifaddrs.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <netpacket/packet.h>
#include <netinet/in.h>
/* Functions using NETDEVICE api */
int get_device_index(int sockfd, char *device_name) {
struct ifreq ifr;
/* Find interface index from device_name */
strncpy(ifr.ifr_name, device_name, 16);
if (ioctl(sockfd, SIOCGIFINDEX, &ifr) != 0) {
return -1;
}
/* Return interface index */
return ifr.ifr_ifindex;
}
int get_device_mac(const int sockfd, const char *device_name, unsigned char *mac) {
struct ifreq ifr;
/* Find interface hardware address from device_name */
strncpy(ifr.ifr_name, device_name, 16);
if (ioctl(sockfd, SIOCGIFHWADDR, &ifr) != 0) {
return -1;
}
/* Fetch mac address */
memcpy(mac, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
return 1;
}
int get_device_ip(const int sockfd, const char *device_name, struct sockaddr_in *ip) {
struct ifconf ifc;
struct ifreq *ifr;
int i,device_count;
/*
* Do a initial query without allocating ifreq structs
* to count the number of ifreq structs to allocate memory for
*/
memset(&ifc, 0, sizeof(ifc));
if (ioctl(sockfd, SIOCGIFCONF, &ifc) != 0) {
return -1;
}
/*
* Allocate memory for interfaces, multiply by two in case
* the number of interfaces has increased since last ioctl
*/
if ((ifr = malloc(ifc.ifc_len * 2)) == NULL) {
perror("malloc");
exit(1);
}
/* Do the actual query for info about all interfaces */
ifc.ifc_req = ifr;
if (ioctl(sockfd, SIOCGIFCONF, &ifc) != 0) {
free(ifr);
return -1;
}
/* Iterate through all devices, searching for interface */
device_count = ifc.ifc_len / sizeof(struct ifreq);
for (i = 0; i < device_count; ++i) {
if (strcmp(ifr[i].ifr_name, device_name) == 0) {
/* Fetch IP for found interface */
memcpy(ip, &(ifr[i].ifr_addr), sizeof(struct sockaddr_in));
free(ifr);
return 1;
}
}
free(ifr);
return -1;
}
int get_macs(int sockfd, char *name, int name_len, unsigned char *mac) {
static int first = 1;
static struct ifaddrs *int_addrs;
static const struct ifaddrs *int_cursor;
const struct sockaddr_in *dl_addr;
if (first == 1) {
first = 0;
if (getifaddrs(&int_addrs) == 0) {
int_cursor = int_addrs;
} else {
first = 1;
return 0;
}
}
if (int_cursor != NULL) {
while (int_cursor != NULL) {
dl_addr = (const struct sockaddr_in *) int_cursor->ifa_addr;
if (dl_addr != NULL && dl_addr->sin_family == AF_PACKET) {
strncpy(name, int_cursor->ifa_name, name_len - 1);
name[name_len - 1] = '\0';
int_cursor = int_cursor->ifa_next;
if (get_device_mac(sockfd, name, mac)) {
return 1;
}
}
int_cursor = int_cursor->ifa_next;
}
}
if (int_addrs != NULL) {
freeifaddrs(int_addrs);
int_addrs = NULL;
}
return 0;
}
int get_ips(char *name, int name_len, struct sockaddr_in *ip) {
static int first = 1;
static struct ifaddrs *int_addrs;
static const struct ifaddrs *int_cursor;
const struct sockaddr_in *dl_addr;
if (first == 1) {
first = 0;
if (getifaddrs(&int_addrs) == 0) {
int_cursor = int_addrs;
} else {
first = 1;
return 0;
}
}
if (int_cursor != NULL) {
while (int_cursor != NULL) {
dl_addr = (const struct sockaddr_in *) int_cursor->ifa_addr;
if (dl_addr != NULL && dl_addr->sin_family == AF_INET) {
memcpy(ip, dl_addr, sizeof(struct sockaddr_in));
strncpy(name, int_cursor->ifa_name, name_len - 1);
name[name_len - 1] = '\0';
int_cursor = int_cursor->ifa_next;
return 1;
}
int_cursor = int_cursor->ifa_next;
}
}
if (int_addrs != NULL) {
freeifaddrs(int_addrs);
int_addrs = NULL;
}
return 0;
}
|
