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
|
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <net/if.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <cutils/log.h>
#include <netutils/ifc.h>
#include <private/android_filesystem_config.h>
#define INTERFACE_MAX_BUFFER_SIZE 4096
typedef struct android_wifi_priv_cmd {
char *buf;
int used_len;
int total_len;
} android_wifi_priv_cmd;
static struct net_if_snd_cmd_state {
int sock;
char cmd[INTERFACE_MAX_BUFFER_SIZE];
char ibuf[INTERFACE_MAX_BUFFER_SIZE];
} state;
int net_iface_send_command_init(void) {
state.sock = socket(AF_INET, SOCK_DGRAM, 0);
if (state.sock < 0) {
return -ENOTCONN;
} else {
return 0;
}
}
/*
* Arguments:
* argv[2] - wlan interface
* argv[3] - command
* argv[4] - argument
*/
int net_iface_send_command(int argc, char *argv[], char **rbuf) {
int ret, i;
size_t bc = 0;
struct ifreq ifr;
android_wifi_priv_cmd priv_cmd;
if (argc < 3) {
return -EINVAL;
}
for (i = 3; i < argc; i++) {
bc += snprintf(&state.cmd[bc], sizeof(state.cmd) - bc, "%s ", argv[i]);
if (bc >= sizeof(state.cmd)) {
return -ENOBUFS;
}
}
state.cmd[bc] = '\0';
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, argv[2], IFNAMSIZ);
strncpy(state.ibuf, state.cmd, INTERFACE_MAX_BUFFER_SIZE);
priv_cmd.buf = state.ibuf;
priv_cmd.used_len = INTERFACE_MAX_BUFFER_SIZE;
priv_cmd.total_len = INTERFACE_MAX_BUFFER_SIZE;
ifr.ifr_data = &priv_cmd;
if ((ret = ioctl(state.sock, SIOCDEVPRIVATE + 1, &ifr)) < 0) {
return ret;
}
if (rbuf)
*rbuf = state.ibuf;
else
ret = -EFAULT;
return ret;
}
|
