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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
#include <stdint.h>
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>
// usbmuxd public interface
#include <usbmuxd.h>
// usbmuxd protocol
#include <usbmuxd-proto.h>
// socket utility functions
#include "sock_stuff.h"
static int usbmuxd_get_result(int sfd, uint32_t tag, uint32_t * result)
{
struct usbmuxd_result res;
int recv_len;
if (!result) {
return -EINVAL;
}
if ((recv_len = recv_buf(sfd, &res, sizeof(res))) <= 0) {
perror("recv");
return -errno;
} else {
if ((recv_len == sizeof(res))
&& (res.header.length == (uint32_t) recv_len)
&& (res.header.reserved == 0)
&& (res.header.type == USBMUXD_RESULT)
) {
*result = res.result;
if (res.header.tag == tag) {
return 1;
} else {
return 0;
}
}
}
return -1;
}
int usbmuxd_scan(usbmuxd_scan_result ** available_devices)
{
struct usbmuxd_scan_request s_req;
int sfd;
int scan_success = 0;
uint32_t res;
uint32_t pktlen;
int recv_len;
usbmuxd_scan_result *newlist = NULL;
struct usbmuxd_device_info_record dev_info_pkt;
int dev_cnt = 0;
sfd = connect_unix_socket(USBMUXD_SOCKET_FILE);
if (sfd < 0) {
fprintf(stderr, "%s: error opening socket!\n", __func__);
return sfd;
}
s_req.header.length = sizeof(struct usbmuxd_scan_request);
s_req.header.reserved = 0;
s_req.header.type = USBMUXD_SCAN;
s_req.header.tag = 2;
// send scan request packet
if (send_buf(sfd, &s_req, s_req.header.length) ==
(int) s_req.header.length) {
res = -1;
// get response
if (usbmuxd_get_result(sfd, s_req.header.tag, &res) && (res == 0)) {
scan_success = 1;
} else {
fprintf(stderr,
"%s: Did not get response to scan request (with result=0)...\n",
__func__);
close(sfd);
return res;
}
}
if (!scan_success) {
fprintf(stderr, "%s: Could not send scan request!\n", __func__);
return -1;
}
*available_devices = NULL;
// receive device list
while (1) {
if (recv_buf_timeout(sfd, &pktlen, 4, MSG_PEEK, 1000) == 4) {
if (pktlen != sizeof(dev_info_pkt)) {
// invalid packet size received!
fprintf(stderr,
"%s: Invalid packet size (%d) received when expecting a device info record.\n",
__func__, pktlen);
break;
}
recv_len = recv_buf(sfd, &dev_info_pkt, pktlen);
if (recv_len <= 0) {
fprintf(stderr,
"%s: Error when receiving device info record\n",
__func__);
break;
} else if ((uint32_t) recv_len < pktlen) {
fprintf(stderr,
"%s: received less data than specified in header!\n",
__func__);
} else {
//fprintf(stderr, "%s: got device record with id %d, UUID=%s\n", __func__, dev_info_pkt.device_info.device_id, dev_info_pkt.device_info.serial_number);
newlist =
(usbmuxd_scan_result *) realloc(*available_devices,
sizeof
(usbmuxd_scan_result) *
(dev_cnt + 1));
if (newlist) {
newlist[dev_cnt].handle =
(int) dev_info_pkt.device.device_id;
newlist[dev_cnt].product_id =
dev_info_pkt.device.product_id;
memset(newlist[dev_cnt].serial_number, '\0',
sizeof(newlist[dev_cnt].serial_number));
memcpy(newlist[dev_cnt].serial_number,
dev_info_pkt.device.serial_number,
sizeof(dev_info_pkt.device.serial_number));
*available_devices = newlist;
dev_cnt++;
} else {
fprintf(stderr,
"%s: ERROR: out of memory when trying to realloc!\n",
__func__);
break;
}
}
} else {
// we _should_ have all of them now.
// or perhaps an error occured.
break;
}
}
// terminating zero record
newlist =
(usbmuxd_scan_result *) realloc(*available_devices,
sizeof(usbmuxd_scan_result) *
(dev_cnt + 1));
memset(newlist + dev_cnt, 0, sizeof(usbmuxd_scan_result));
*available_devices = newlist;
return dev_cnt;
}
int usbmuxd_connect(const int handle, const unsigned short tcp_port)
{
int sfd;
struct usbmuxd_connect_request c_req;
int connected = 0;
uint32_t res = -1;
sfd = connect_unix_socket(USBMUXD_SOCKET_FILE);
if (sfd < 0) {
fprintf(stderr, "%s: Error: Connection to usbmuxd failed: %s\n",
__func__, strerror(errno));
return sfd;
}
c_req.header.length = sizeof(c_req);
c_req.header.reserved = 0;
c_req.header.type = USBMUXD_CONNECT;
c_req.header.tag = 3;
c_req.device_id = (uint32_t) handle;
c_req.tcp_dport = htons(tcp_port);
c_req.reserved = 0;
if (send_buf(sfd, &c_req, sizeof(c_req)) < 0) {
perror("send");
} else {
// read ACK
//fprintf(stderr, "%s: Reading connect result...\n", __func__);
if (usbmuxd_get_result(sfd, c_req.header.tag, &res)) {
if (res == 0) {
//fprintf(stderr, "%s: Connect success!\n", __func__);
connected = 1;
} else {
fprintf(stderr, "%s: Connect failed, Error code=%d\n",
__func__, res);
}
}
}
if (connected) {
return sfd;
}
close(sfd);
return -1;
}
int usbmuxd_disconnect(int sfd)
{
return close(sfd);
}
int usbmuxd_send(int sfd, const char *data, uint32_t len, uint32_t *sent_bytes)
{
int num_sent;
if (sfd < 0) {
return -EINVAL;
}
num_sent = send(sfd, (void*)data, len, 0);
if (num_sent < 0) {
*sent_bytes = 0;
fprintf(stderr, "%s: Error %d when sending: %s\n", __func__, num_sent, strerror(errno));
return num_sent;
} else if ((uint32_t)num_sent < len) {
fprintf(stderr, "%s: Warning: Did not send enough (only %d of %d)\n", __func__, num_sent, len);
}
*sent_bytes = num_sent;
return 0;
}
int usbmuxd_recv_timeout(int sfd, char *data, uint32_t len, uint32_t *recv_bytes, unsigned int timeout)
{
int num_recv = recv_buf_timeout(sfd, (void*)data, len, 0, timeout);
if (num_recv < 0) {
*recv_bytes = 0;
return num_recv;
}
*recv_bytes = num_recv;
return 0;
}
int usbmuxd_recv(int sfd, char *data, uint32_t len, uint32_t *recv_bytes)
{
return usbmuxd_recv_timeout(sfd, data, len, recv_bytes, 5000);
}
|
