| /* |
| iproxy -- proxy that enables tcp service access to iPhone/iPod |
| |
| Copyright (C) 2009 Nikias Bassen <nikias@gmx.li> |
| Copyright (C) 2009 Paul Sladen <libiphone@paul.sladen.org> |
| |
| Based upon iTunnel source code, Copyright (c) 2008 Jing Su. |
| http://www.cs.toronto.edu/~jingsu/itunnel/ |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| |
| TODO: improve code... |
| |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <stddef.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #ifdef WIN32 |
| #include <windows.h> |
| #include <winsock2.h> |
| typedef unsigned int socklen_t; |
| #else |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| #include <arpa/inet.h> |
| #include <pthread.h> |
| #include <netinet/in.h> |
| #endif |
| #include "sock_stuff.h" |
| #include "usbmuxd.h" |
| |
| static uint16_t listen_port = 0; |
| static uint16_t device_port = 0; |
| |
| struct client_data { |
| int fd; |
| int sfd; |
| volatile int stop_ctos; |
| volatile int stop_stoc; |
| }; |
| |
| static void *run_stoc_loop(void *arg) |
| { |
| struct client_data *cdata = (struct client_data*)arg; |
| int recv_len; |
| int sent; |
| char buffer[131072]; |
| |
| printf("%s: fd = %d\n", __func__, cdata->fd); |
| |
| while (!cdata->stop_stoc && cdata->fd>0 && cdata->sfd>0) { |
| recv_len = recv_buf_timeout(cdata->sfd, buffer, sizeof(buffer), 0, 5000); |
| if (recv_len <= 0) { |
| if (recv_len == 0) { |
| // try again |
| continue; |
| } else { |
| fprintf(stderr, "recv failed: %s\n", strerror(errno)); |
| break; |
| } |
| } else { |
| // printf("received %d bytes from server\n", recv_len); |
| // send to socket |
| sent = send_buf(cdata->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 |
| // printf("pushed %d bytes to client\n", sent); |
| } |
| } |
| } |
| close(cdata->fd); |
| cdata->fd = -1; |
| cdata->stop_ctos = 1; |
| |
| return NULL; |
| } |
| |
| static void *run_ctos_loop(void *arg) |
| { |
| struct client_data *cdata = (struct client_data*)arg; |
| int recv_len; |
| int sent; |
| char buffer[131072]; |
| #ifdef WIN32 |
| HANDLE stoc = NULL; |
| #else |
| pthread_t stoc; |
| #endif |
| |
| printf("%s: fd = %d\n", __func__, cdata->fd); |
| |
| cdata->stop_stoc = 0; |
| #ifdef WIN32 |
| stoc = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)run_stoc_loop, cdata, 0, NULL); |
| #else |
| pthread_create(&stoc, NULL, run_stoc_loop, cdata); |
| #endif |
| |
| while (!cdata->stop_ctos && cdata->fd>0 && cdata->sfd>0) { |
| recv_len = recv_buf_timeout(cdata->fd, buffer, sizeof(buffer), 0, 5000); |
| if (recv_len <= 0) { |
| if (recv_len == 0) { |
| // try again |
| continue; |
| } else { |
| fprintf(stderr, "recv failed: %s\n", strerror(errno)); |
| break; |
| } |
| } else { |
| // printf("pulled %d bytes from client\n", recv_len); |
| // send to local socket |
| sent = send_buf(cdata->sfd, 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 |
| // printf("sent %d bytes to server\n", sent); |
| } |
| } |
| } |
| close(cdata->fd); |
| cdata->fd = -1; |
| cdata->stop_stoc = 1; |
| |
| #ifdef WIN32 |
| WaitForSingleObject(stoc, INFINITE); |
| #else |
| pthread_join(stoc, NULL); |
| #endif |
| |
| return NULL; |
| } |
| |
| static void *acceptor_thread(void *arg) |
| { |
| struct client_data *cdata; |
| usbmuxd_device_info_t *dev_list = NULL; |
| #ifdef WIN32 |
| HANDLE ctos = NULL; |
| #else |
| pthread_t ctos; |
| #endif |
| int count; |
| |
| if (!arg) { |
| fprintf(stderr, "invalid client_data provided!\n"); |
| return NULL; |
| } |
| |
| cdata = (struct client_data*)arg; |
| |
| if ((count = usbmuxd_get_device_list(&dev_list)) < 0) { |
| printf("Connecting to usbmuxd failed, terminating.\n"); |
| free(dev_list); |
| return NULL; |
| } |
| |
| fprintf(stdout, "Number of available devices == %d\n", count); |
| |
| if (dev_list == NULL || dev_list[0].handle == 0) { |
| printf("No connected device found, terminating.\n"); |
| free(dev_list); |
| return NULL; |
| } |
| |
| fprintf(stdout, "Requesting connecion to device handle == %d (serial: %s), port %d\n", dev_list[0].handle, dev_list[0].udid, device_port); |
| |
| cdata->sfd = usbmuxd_connect(dev_list[0].handle, device_port); |
| free(dev_list); |
| if (cdata->sfd < 0) { |
| fprintf(stderr, "Error connecting to device!\n"); |
| } else { |
| cdata->stop_ctos = 0; |
| #ifdef WIN32 |
| ctos = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)run_ctos_loop, cdata, 0, NULL); |
| WaitForSingleObject(ctos, INFINITE); |
| #else |
| pthread_create(&ctos, NULL, run_ctos_loop, cdata); |
| pthread_join(ctos, NULL); |
| #endif |
| } |
| |
| if (cdata->fd > 0) { |
| close(cdata->fd); |
| } |
| if (cdata->sfd > 0) { |
| close(cdata->sfd); |
| } |
| |
| return NULL; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int mysock = -1; |
| |
| if (argc != 3) { |
| printf("usage: %s LOCAL_TCP_PORT DEVICE_TCP_PORT\n", argv[0]); |
| return 0; |
| } |
| |
| listen_port = atoi(argv[1]); |
| device_port = atoi(argv[2]); |
| |
| if (!listen_port) { |
| fprintf(stderr, "Invalid listen_port specified!\n"); |
| return -EINVAL; |
| } |
| |
| if (!device_port) { |
| fprintf(stderr, "Invalid device_port specified!\n"); |
| return -EINVAL; |
| } |
| |
| // first create the listening socket endpoint waiting for connections. |
| mysock = create_socket(listen_port); |
| if (mysock < 0) { |
| fprintf(stderr, "Error creating socket: %s\n", strerror(errno)); |
| return -errno; |
| } else { |
| #ifdef WIN32 |
| HANDLE acceptor = NULL; |
| #else |
| pthread_t acceptor; |
| #endif |
| struct sockaddr_in c_addr; |
| socklen_t len = sizeof(struct sockaddr_in); |
| struct client_data cdata; |
| int c_sock; |
| while (1) { |
| printf("waiting for connection\n"); |
| c_sock = accept(mysock, (struct sockaddr*)&c_addr, &len); |
| if (c_sock) { |
| printf("accepted connection, fd = %d\n", c_sock); |
| cdata.fd = c_sock; |
| #ifdef WIN32 |
| acceptor = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)acceptor_thread, &cdata, 0, NULL); |
| WaitForSingleObject(acceptor, INFINITE); |
| #else |
| pthread_create(&acceptor, NULL, acceptor_thread, &cdata); |
| pthread_join(acceptor, NULL); |
| #endif |
| } else { |
| break; |
| } |
| } |
| close(c_sock); |
| close(mysock); |
| } |
| |
| return 0; |
| } |