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#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <stddef.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <errno.h>
#include <arpa/inet.h>
#include "usbmuxd.h"
#include "sock_stuff.h"
#define SOCKET_FILE "/var/run/usbmuxd"
int usbmuxd_get_result(int sfd, uint32_t tag, uint32_t *result)
{
struct usbmux_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 == recv_len)
&& (res.header.reserved == 0)
&& (res.header.type == usbmux_result)
) {
*result = res.result;
if (res.header.tag == tag) {
return 1;
} else {
return 0;
}
}
}
return -1;
}
int main(int argc, char **argv)
{
int sfd;
int recv_len = 0;
int hello_done;
int connected;
uint32_t pktlen;
unsigned char *buf;
struct usbmux_header hello;
struct usbmux_dev_info device_info;
sfd = connect_unix_socket(SOCKET_FILE);
if (sfd < 0) {
printf("error opening socket, terminating.\n");
return -1;
}
// send hello
hello.length = sizeof(struct usbmux_header);
hello.reserved = 0;
hello.type = usbmux_hello;
hello.tag = 2;
hello_done = 0;
connected = 0;
fprintf(stdout, "sending Hello packet\n");
if (send(sfd, &hello, hello.length, 0) == hello.length) {
uint32_t res = -1;
// get response
if (usbmuxd_get_result(sfd, hello.tag, &res) && (res==0)) {
fprintf(stdout, "Got Hello Response!\n");
hello_done = 1;
} else {
fprintf(stderr, "Did not get Hello response (with result=0)...\n");
close(sfd);
return -1;
}
device_info.device_id = 0;
if (hello_done) {
// get all devices
while (1) {
if (recv_buf_timeout(sfd, &pktlen, 4, MSG_PEEK, 1000) == 4) {
buf = (unsigned char*)malloc(pktlen);
if (!buf) {
exit(-ENOMEM);
}
recv_len = recv_buf(sfd, buf, pktlen);
if (recv_len < pktlen) {
fprintf(stdout, "received less data than specified in header!\n");
}
fprintf(stdout, "got device data:\n");
//log_debug_buffer(stdout, (char*)buf, pktlen);
memcpy(&device_info, buf + sizeof(struct usbmux_header), sizeof(device_info));
free(buf);
} else {
// we _should_ have all of them now.
// or perhaps an error occured.
break;
}
}
}
if (device_info.device_id > 0) {
struct usbmux_connect_request c_req;
// try to connect to last device found
c_req.header.length = sizeof(c_req);
c_req.header.reserved = 0;
c_req.header.type = usbmux_connect;
c_req.header.tag = 3;
c_req.device_id = device_info.device_id;
c_req.port = htons(22);
c_req.reserved = 0;
if (send_buf(sfd, &c_req, sizeof(c_req)) < 0) {
perror("send");
} else {
// read ACK
res = -1;
if (usbmuxd_get_result(sfd, c_req.header.tag, &res)) {
if (res == 0) {
fprintf(stdout, "Connect success!\n");
connected = 1;
} else {
fprintf(stderr, "Connect failed, Error code=%d\n", res);
}
}
}
}
if (connected) {
// do communication now.
sleep(10);
}
}
close(sfd);
return 0;
}
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