| /* |
| * idevicedebugserverproxy.c |
| * Proxy a debugserver connection from device for remote debugging |
| * |
| * Copyright (c) 2012 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 <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <signal.h> |
| |
| #include <libimobiledevice/libimobiledevice.h> |
| #include <libimobiledevice/lockdown.h> |
| |
| #include "common/socket.h" |
| #include "common/thread.h" |
| |
| #define info(...) fprintf(stdout, __VA_ARGS__); fflush(stdout) |
| #define debug(...) if(debug_mode) fprintf(stdout, __VA_ARGS__) |
| |
| static int debug_mode = 0; |
| static int quit_flag = 0; |
| |
| typedef struct { |
| int server_fd; |
| int client_fd; |
| uint16_t local_port; |
| uint16_t remote_port; |
| idevice_connection_t device_connection; |
| volatile int stop_ctod; |
| volatile int stop_dtoc; |
| } socket_info_t; |
| |
| static void clean_exit(int sig) |
| { |
| fprintf(stderr, "Exiting...\n"); |
| quit_flag++; |
| } |
| |
| static void print_usage(int argc, char **argv) |
| { |
| char *name = NULL; |
| |
| name = strrchr(argv[0], '/'); |
| printf("Usage: %s [OPTIONS] <PORT>\n", (name ? name + 1: argv[0])); |
| printf("Proxy debugserver connection from device to a local socket at PORT.\n\n"); |
| printf(" -d, --debug\t\tenable communication debugging\n"); |
| printf(" -u, --udid UDID\ttarget specific device by its 40-digit device UDID\n"); |
| printf(" -h, --help\t\tprints usage information\n"); |
| printf("\n"); |
| } |
| |
| static void *thread_device_to_client(void *data) |
| { |
| socket_info_t* socket_info = (socket_info_t*)data; |
| idevice_error_t res = IDEVICE_E_UNKNOWN_ERROR; |
| |
| int recv_len; |
| int sent; |
| char buffer[131072]; |
| |
| debug("%s: started thread...\n", __func__); |
| |
| debug("%s: client_fd = %d\n", __func__, socket_info->client_fd); |
| debug("%s: server fd = %d\n", __func__, socket_info->server_fd); |
| |
| while (!quit_flag && !socket_info->stop_dtoc && socket_info->client_fd > 0 && socket_info->server_fd > 0) { |
| debug("%s: receiving data from device...\n", __func__); |
| |
| res = idevice_connection_receive_timeout(socket_info->device_connection, buffer, sizeof(buffer), (uint32_t*)&recv_len, 5000); |
| |
| if (recv_len <= 0) { |
| if (recv_len == 0 && res == IDEVICE_E_SUCCESS) { |
| // try again |
| continue; |
| } else { |
| fprintf(stderr, "recv failed: %s\n", strerror(errno)); |
| break; |
| } |
| } else { |
| /* send to device */ |
| debug("%s: sending data to client...\n", __func__); |
| sent = socket_send(socket_info->client_fd, buffer, recv_len); |
| if (sent < recv_len) { |
| if (sent <= 0) { |
| fprintf(stderr, "send failed: %s\n", strerror(errno)); |
| break; |
| } else { |
| fprintf(stderr, "only sent %d from %d bytes\n", sent, recv_len); |
| } |
| } else { |
| // sending succeeded, receive from device |
| debug("%s: pushed %d bytes to client\n", __func__, sent); |
| } |
| } |
| } |
| |
| debug("%s: shutting down...\n", __func__); |
| |
| socket_shutdown(socket_info->client_fd, SHUT_RDWR); |
| socket_close(socket_info->client_fd); |
| |
| socket_info->client_fd = -1; |
| socket_info->stop_ctod = 1; |
| |
| return NULL; |
| } |
| |
| static void *thread_client_to_device(void *data) |
| { |
| socket_info_t* socket_info = (socket_info_t*)data; |
| idevice_error_t res = IDEVICE_E_UNKNOWN_ERROR; |
| |
| int recv_len; |
| int sent; |
| char buffer[131072]; |
| thread_t dtoc; |
| |
| debug("%s: started thread...\n", __func__); |
| |
| debug("%s: client_fd = %d\n", __func__, socket_info->client_fd); |
| debug("%s: server_fd = %d\n", __func__, socket_info->server_fd); |
| |
| /* spawn server to client thread */ |
| socket_info->stop_dtoc = 0; |
| if (thread_create(&dtoc, thread_device_to_client, data) != 0) { |
| fprintf(stderr, "Failed to start device to client thread...\n"); |
| } |
| |
| while (!quit_flag && !socket_info->stop_ctod && socket_info->client_fd > 0 && socket_info->server_fd > 0) { |
| debug("%s: receiving data from client...\n", __func__); |
| |
| /* attempt to read incoming data from client */ |
| recv_len = socket_receive_timeout(socket_info->client_fd, buffer, sizeof(buffer), 0, 5000); |
| |
| /* any data received? */ |
| if (recv_len <= 0) { |
| if (recv_len == 0) { |
| /* try again */ |
| continue; |
| } else { |
| fprintf(stderr, "Receive failed: %s\n", strerror(errno)); |
| break; |
| } |
| } else { |
| /* forward data to device */ |
| debug("%s: sending data to device...\n", __func__); |
| res = idevice_connection_send(socket_info->device_connection, buffer, recv_len, (uint32_t*)&sent); |
| |
| if (sent < recv_len || res != IDEVICE_E_SUCCESS) { |
| if (sent <= 0) { |
| fprintf(stderr, "send failed: %s\n", strerror(errno)); |
| break; |
| } else { |
| fprintf(stderr, "only sent %d from %d bytes\n", sent, recv_len); |
| } |
| } else { |
| // sending succeeded, receive from device |
| debug("%s: sent %d bytes to device\n", __func__, sent); |
| } |
| } |
| } |
| |
| debug("%s: shutting down...\n", __func__); |
| |
| socket_shutdown(socket_info->client_fd, SHUT_RDWR); |
| socket_close(socket_info->client_fd); |
| |
| socket_info->client_fd = -1; |
| socket_info->stop_dtoc = 1; |
| |
| /* join other thread to allow it to stop */ |
| thread_join(dtoc); |
| |
| return NULL; |
| } |
| |
| static void* connection_handler(void* data) |
| { |
| socket_info_t* socket_info = (socket_info_t*)data; |
| thread_t ctod; |
| |
| debug("%s: client_fd = %d\n", __func__, socket_info->client_fd); |
| |
| /* spawn client to device thread */ |
| socket_info->stop_ctod = 0; |
| if (thread_create(&ctod, thread_client_to_device, data) != 0) { |
| fprintf(stderr, "Failed to start client to device thread...\n"); |
| } |
| |
| /* join the fun */ |
| thread_join(ctod); |
| |
| /* shutdown client socket */ |
| socket_shutdown(socket_info->client_fd, SHUT_RDWR); |
| socket_close(socket_info->client_fd); |
| |
| /* shutdown server socket if we have to terminate to unblock the server loop */ |
| if (quit_flag) { |
| socket_shutdown(socket_info->server_fd, SHUT_RDWR); |
| socket_close(socket_info->server_fd); |
| } |
| |
| return NULL; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| lockdownd_client_t lockdown = NULL; |
| idevice_t device = NULL; |
| idevice_connection_t connection = NULL; |
| idevice_error_t ret = IDEVICE_E_UNKNOWN_ERROR; |
| thread_t th; |
| const char* udid = NULL; |
| lockdownd_service_descriptor_t service = NULL; |
| uint16_t local_port = 0; |
| int result = EXIT_SUCCESS; |
| int i; |
| |
| /* bind signals */ |
| signal(SIGINT, clean_exit); |
| signal(SIGTERM, clean_exit); |
| #ifndef WIN32 |
| signal(SIGQUIT, clean_exit); |
| signal(SIGPIPE, SIG_IGN); |
| #endif |
| |
| /* parse cmdline arguments */ |
| for (i = 1; i < argc; i++) { |
| if (!strcmp(argv[i], "-d") || !strcmp(argv[i], "--debug")) { |
| debug_mode = 1; |
| idevice_set_debug_level(1); |
| socket_set_verbose(3); |
| continue; |
| } |
| else if (!strcmp(argv[i], "-u") || !strcmp(argv[i], "--udid")) { |
| i++; |
| if (!argv[i] || (strlen(argv[i]) != 40)) { |
| print_usage(argc, argv); |
| return 0; |
| } |
| udid = argv[i]; |
| continue; |
| } |
| else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) { |
| print_usage(argc, argv); |
| return EXIT_SUCCESS; |
| } |
| else if (atoi(argv[i]) > 0) { |
| local_port = atoi(argv[i]); |
| continue; |
| } |
| else { |
| print_usage(argc, argv); |
| return EXIT_SUCCESS; |
| } |
| } |
| |
| /* a PORT is mandatory */ |
| if (!local_port) { |
| fprintf(stderr, "Please specify a PORT.\n"); |
| print_usage(argc, argv); |
| goto leave_cleanup; |
| } |
| |
| /* start services and connect to device */ |
| ret = idevice_new(&device, udid); |
| if (ret != IDEVICE_E_SUCCESS) { |
| if (udid) { |
| fprintf(stderr, "No device found with udid %s, is it plugged in?\n", udid); |
| } else { |
| fprintf(stderr, "No device found, is it plugged in?\n"); |
| } |
| result = EXIT_FAILURE; |
| goto leave_cleanup; |
| } |
| |
| if (LOCKDOWN_E_SUCCESS != lockdownd_client_new_with_handshake(device, &lockdown, "idevicedebugserverproxy")) { |
| fprintf(stderr, "Could not connect to lockdownd. Exiting.\n"); |
| result = EXIT_FAILURE; |
| goto leave_cleanup; |
| } |
| |
| if ((lockdownd_start_service(lockdown, "com.apple.debugserver", &service) != LOCKDOWN_E_SUCCESS) || !service || !service->port) { |
| fprintf(stderr, "Could not start com.apple.debugserver!\nPlease make sure to mount the developer disk image first.\n"); |
| result = EXIT_FAILURE; |
| goto leave_cleanup; |
| } |
| |
| if (idevice_connect(device, service->port, &connection) != IDEVICE_E_SUCCESS) { |
| fprintf(stderr, "Connection to debugserver port %d failed!\n", (int)service->port); |
| result = EXIT_FAILURE; |
| goto leave_cleanup; |
| } |
| |
| /* free lockdown connection if running as it is not needed anymore */ |
| if (lockdown) { |
| lockdownd_client_free(lockdown); |
| lockdown = NULL; |
| } |
| |
| /* setup and create socket endpoint */ |
| socket_info_t socket_info; |
| |
| socket_info.device_connection = connection; |
| socket_info.local_port = local_port; |
| socket_info.remote_port = service->port; |
| |
| if (service) { |
| lockdownd_service_descriptor_free(service); |
| service = NULL; |
| } |
| |
| /* create local socket */ |
| socket_info.server_fd = socket_create(socket_info.local_port); |
| if (socket_info.server_fd < 0) { |
| fprintf(stderr, "Could not create socket\n"); |
| result = EXIT_FAILURE; |
| goto leave_cleanup; |
| } |
| |
| while (!quit_flag) { |
| debug("%s: Waiting for connection on local port %d\n", __func__, socket_info.local_port); |
| |
| /* wait for client */ |
| socket_info.client_fd = socket_accept(socket_info.server_fd, socket_info.local_port); |
| if (socket_info.client_fd < 0) { |
| debug("%s: Continuing...\n", __func__); |
| continue; |
| } |
| |
| debug("%s: Handling new client connection...\n", __func__); |
| |
| if (thread_create(&th, connection_handler, (void*)&socket_info) != 0) { |
| fprintf(stderr, "Could not start connection handler.\n"); |
| socket_shutdown(socket_info.server_fd, SHUT_RDWR); |
| socket_close(socket_info.server_fd); |
| } |
| } |
| |
| debug("%s: Shutting down debugserver proxy...\n", __func__); |
| |
| leave_cleanup: |
| if (connection) { |
| idevice_disconnect(connection); |
| } |
| if (lockdown) { |
| lockdownd_client_free(lockdown); |
| } |
| if (device) { |
| idevice_free(device); |
| } |
| |
| return result; |
| } |