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/*
* syslog_relay.c
* Relay the syslog of a device to stdout
*
* Copyright (c) 2009 Martin Szulecki All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <netinet/in.h>
#include <signal.h>
#include <stdlib.h>
#include <libiphone/libiphone.h>
#include <libiphone/lockdown.h>
static int quit_flag = 0;
void print_usage(int argc, char **argv);
/**
* signal handler function for cleaning up properly
*/
static void clean_exit(int sig)
{
fprintf(stderr, "Exiting...\n");
quit_flag++;
}
int main(int argc, char *argv[])
{
lockdownd_client_t client = NULL;
iphone_device_t phone = NULL;
iphone_error_t ret = IPHONE_E_UNKNOWN_ERROR;
int i;
char uuid[41];
int port = 0;
uuid[0] = 0;
signal(SIGINT, clean_exit);
signal(SIGQUIT, clean_exit);
signal(SIGTERM, clean_exit);
signal(SIGPIPE, SIG_IGN);
/* parse cmdline args */
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-d") || !strcmp(argv[i], "--debug")) {
iphone_set_debug_mask(DBGMASK_ALL);
iphone_set_debug_level(1);
continue;
}
else if (!strcmp(argv[i], "-u") || !strcmp(argv[i], "--uuid")) {
i++;
if (!argv[i] || (strlen(argv[i]) != 40)) {
print_usage(argc, argv);
return 0;
}
strcpy(uuid, argv[i]);
continue;
}
else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) {
print_usage(argc, argv);
return 0;
}
else {
print_usage(argc, argv);
return 0;
}
}
if (uuid[0] != 0) {
ret = iphone_device_new(&phone, uuid);
if (ret != IPHONE_E_SUCCESS) {
printf("No device found with uuid %s, is it plugged in?\n", uuid);
return -1;
}
}
else
{
ret = iphone_device_new(&phone, NULL);
if (ret != IPHONE_E_SUCCESS) {
printf("No device found, is it plugged in?\n");
return -1;
}
}
if (LOCKDOWN_E_SUCCESS != lockdownd_client_new(phone, &client)) {
iphone_device_free(phone);
return -1;
}
/* start syslog_relay service and retrieve port */
ret = lockdownd_start_service(client, "com.apple.syslog_relay", &port);
if ((ret == LOCKDOWN_E_SUCCESS) && port) {
lockdownd_client_free(client);
/* connect to socket relay messages */
iphone_connection_t conn = NULL;
if ((iphone_device_connect(phone, port, &conn) != IPHONE_E_SUCCESS) || !conn) {
printf("ERROR: Could not open usbmux connection.\n");
} else {
while (!quit_flag) {
char *receive = NULL;
uint32_t datalen = 0, bytes = 0, recv_bytes = 0;
ret = iphone_device_recv(conn, (char *) &datalen, sizeof(datalen), &bytes);
datalen = ntohl(datalen);
if (datalen == 0)
continue;
recv_bytes += bytes;
receive = (char *) malloc(sizeof(char) * datalen);
while (!quit_flag && (recv_bytes <= datalen)) {
ret = iphone_device_recv(conn, receive, datalen, &bytes);
if (bytes == 0)
break;
recv_bytes += bytes;
fwrite(receive, sizeof(char), bytes, stdout);
}
free(receive);
}
}
iphone_device_disconnect(conn);
} else {
printf("ERROR: Could not start service com.apple.syslog_relay.\n");
}
iphone_device_free(phone);
return 0;
}
void print_usage(int argc, char **argv)
{
char *name = NULL;
name = strrchr(argv[0], '/');
printf("Usage: %s [OPTIONS]\n", (name ? name + 1: argv[0]));
printf("Relay syslog of a connected iPhone/iPod Touch.\n\n");
printf(" -d, --debug\t\tenable communication debugging\n");
printf(" -u, --uuid UUID\ttarget specific device by its 40-digit device UUID\n");
printf(" -h, --help\t\tprints usage information\n");
printf("\n");
}
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