From 523c44d0018c2e8480b37ac917aef7469b4b3a65 Mon Sep 17 00:00:00 2001 From: Paul Sladen Date: Wed, 25 Feb 2009 20:01:34 +0100 Subject: A Readme, Makefile updates and cosmetic changes. --- main.c | 853 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 853 insertions(+) create mode 100644 main.c (limited to 'main.c') diff --git a/main.c b/main.c new file mode 100644 index 0000000..bf062b7 --- /dev/null +++ b/main.c @@ -0,0 +1,853 @@ +/* + * usbmuxd -- daemon for communication with iPhone/iPod via USB + * + * Copyright (c) 2009 Nikias Bassen. All Rights Reserved. + * 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 + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "usbmuxd.h" +#include "sock_stuff.h" + +#include "iphone.h" + +#define DEFAULT_TIMEOUT 4000 +#define DEFAULT_CHILDREN_CAPACITY 10 + +static int quit_flag = 0; +static int fsock = -1; + +struct device_use_info { + uint32_t device_id; + iphone_device_t phone; + int use_count; +}; + +struct client_data { + volatile int dead; + int socket; + int tag; + pthread_t thread; + pthread_t handler; + pthread_t reader; + int reader_quit; + int reader_dead; + int handler_dead; + iphone_umux_client_t muxclient; + struct device_use_info *duinfo; +}; + +static struct device_use_info **device_use_list = NULL; +static int device_use_count = 0; +static pthread_mutex_t usbmux_mutex = PTHREAD_MUTEX_INITIALIZER; + +/** + * mutex for mutual exclusion of calling the iphone_mux_send function + * TODO: I don't know if we really need this? + */ +static pthread_mutex_t writer_mutex = PTHREAD_MUTEX_INITIALIZER; + +/** + * mutex to keep the reader threads from reading partial packages + */ +static pthread_mutex_t reader_mutex = PTHREAD_MUTEX_INITIALIZER; + +#ifdef DEBUG +/** + * for debugging purposes. + */ +static void print_buffer(const char *data, const int length) +{ + int i; + int j; + unsigned char c; + + for(i=0; i= length) { + printf(" "); + continue; + } + printf("%02hhx ", *(data+i+j)); + } + printf(" | "); + for(j=0;j<16;j++) { + if (i+j >= length) + break; + c = *(data+i+j); + if ((c < 32) || (c > 127)) { + printf("."); + continue; + } + printf("%c", c); + } + printf("\n"); + } + printf("\n"); +} +#endif + +/** + * Read incoming usbmuxd packet. If the packet is larger than + * the size specified by len, the data will be truncated. + * + * @param fd the file descriptor to read from. + * @param data pointer to a buffer to store the read data to. + * @param len the length of the data to be read. The buffer + * pointed to by data should be at least len bytes in size. + * + * @return + */ +static int usbmuxd_get_request(int fd, void *data, size_t len) +{ + uint32_t pktlen; + int recv_len; + + if (peek_buf(fd, &pktlen, sizeof(pktlen)) < sizeof(pktlen)) { + return -errno; + } + + if (len < pktlen) { + // target buffer is to small to hold this packet! fix it! + fprintf(stderr, "%s: WARNING -- packet (%d) is larger than target buffer (%d)! Truncating.\n", __func__, pktlen, len); + pktlen = len; + } + + recv_len = recv_buf(fd, data, pktlen); + if ((recv_len > 0) && (recv_len < pktlen)) { + fprintf(stderr, "%s: Uh-oh, we got less than the packet's size, %d instead of %d...\n", __func__, recv_len, pktlen); + } + + return recv_len; +} + +/** + * Send a usbmuxd result packet with given tag and result_code. + * + * @param fd the file descriptor to write to. + * @param tag the tag value that identifies where this message belongs to. + * @param result_code the error value (0 = Success, most likely errno values otherwise) + * + * @return the return value returned by send_buf (normally the number of bytes sent) + */ +static int usbmuxd_send_result(int fd, uint32_t tag, uint32_t result_code) +{ + struct usbmuxd_result res; + + res.header.length = sizeof(res); + res.header.reserved = 0; + res.header.type = USBMUXD_RESULT; + res.header.tag = tag; + res.result = result_code; + + fprintf(stderr, "%s: tag=%d result=%d\n", __func__, res.header.tag, res.result); + + return send_buf(fd, &res, sizeof(res)); +} + +/** + * this thread reads from the usb connection and writes the + * data to the connected client. + * + * @param arg pointer to a client_data structure. + * + * @return NULL in any case + */ +static void *usbmuxd_client_reader_thread(void *arg) +{ + struct client_data *cdata; + + char rbuffer[512]; + uint32_t rbuffersize = 512; + uint32_t rlen; + iphone_error_t err; + char *cursor; + ssize_t len; + int result; + + if (!arg) { + fprintf(stderr, "%s: invalid client_data supplied!\n", __func__); + cdata->reader_dead = 1; + return NULL; + } + + cdata = (struct client_data*)arg; + + cdata->reader_dead = 0; + + fprintf(stdout, "%s[%d:%d]: started\n", __func__, cdata->duinfo->device_id, cdata->duinfo->use_count); + + while (!quit_flag && !cdata->reader_quit) { + result = check_fd(cdata->socket, FD_WRITE, DEFAULT_TIMEOUT); + if (result <= 0) { + if (result < 0) { + fprintf(stderr, "%s: select error: %s\n", __func__, strerror(errno)); + } + continue; + } + + rlen = 0; + //pthread_mutex_lock(&usbmux_mutex); + err = iphone_mux_recv_timeout(cdata->muxclient, rbuffer, rbuffersize, &rlen, DEFAULT_TIMEOUT); + //pthread_mutex_unlock(&usbmux_mutex); + if (err != 0) { + fprintf(stderr, "%s[%d:%d]: encountered USB read error: %d\n", __func__, cdata->duinfo->device_id, cdata->duinfo->use_count, err); + break; + } + + cursor = rbuffer; + while (rlen > 0) { + len = send_buf(cdata->socket, cursor, rlen); + // calculate remainder + rlen -= len; + // advance cursor + cursor += len; + } + fsync(cdata->socket); + } + + fprintf(stdout, "%s[%d:%d]: terminated\n", __func__, cdata->duinfo->device_id, cdata->duinfo->use_count); + + cdata->reader_dead = 1; + + return NULL; +} + +/** + * This function handles the connecting procedure to a previously + * set up usbmux client. + * Sends a usbmuxd result packet denoting success or failure. + * A successful result is mandatory for later communication. + * + * @param cdata pointer to a previously initialized client_data structure + * + * @return + */ +static int usbmuxd_handleConnectResult(struct client_data *cdata) +{ + int result; + char buffer[512]; + char err_type[64]; + int err_code; + ssize_t maxlen = 512; + uint32_t rlen; + iphone_error_t err; + + if (!cdata) { + fprintf(stderr, "%s: Invalid client_data provided!\n", __func__); + return -EINVAL; + } + + result = check_fd(cdata->socket, FD_WRITE, DEFAULT_TIMEOUT); + if (result <= 0) { + if (result < 0) { + fprintf(stderr, "%s: select error: %s\n", __func__, strerror(errno)); + return result; + } + } else { + result = 0; + err = iphone_mux_recv_timeout(cdata->muxclient, buffer, maxlen, &rlen, DEFAULT_TIMEOUT); + if (err != 0) { + fprintf(stderr, "%s: encountered USB read error: %d\n", __func__, err); + usbmuxd_send_result(cdata->socket, cdata->tag, -err); + return err; + } else { + if (rlen > 0) { + if ((buffer[0] == 1) && (rlen > 20) && !memcmp(buffer+1, "handleConnectResult:", 20)) { + // hm... we got an error message! + buffer[rlen] = 0; + fprintf(stderr, "%s: %s\n", __func__, buffer+22); + + if (sscanf(buffer+22, "%s - %d\n", err_type, &err_code) == 2) { + usbmuxd_send_result(cdata->socket, cdata->tag, err_code); + return -err_code; + } else { + usbmuxd_send_result(cdata->socket, cdata->tag, ENODATA); + return -ENODATA; + } + } else { + // send success result + usbmuxd_send_result(cdata->socket, cdata->tag, 0); + // and the server greeting message + send_buf(cdata->socket, buffer, rlen); + } + } else { + // no server greeting? this seems to be ok. send success. + usbmuxd_send_result(cdata->socket, cdata->tag, 0); + } + } + //fsync(cdata->socket); + } + return result; +} + +/** + * This thread handles the communication between the connected iPhone/iPod + * and the client that created the connection. + */ +static void *usbmuxd_client_handler_thread(void *arg) +{ + struct client_data *cdata; + int result; + char *cursor; + char buffer[1024]; + ssize_t len; + ssize_t maxlen = sizeof(buffer); + uint32_t wlen; + iphone_error_t err; + + if (!arg) { + fprintf(stderr, "%s: invalid client_data provided!\n", __func__); + return NULL; + } + + cdata = (struct client_data*)arg; + + fprintf(stdout, "%s[%d:%d]: started\n", __func__, cdata->duinfo->device_id,cdata->duinfo->use_count); + + if (usbmuxd_handleConnectResult(cdata)) { + goto leave; + } + + // starting mux reader thread + cdata->reader_quit = 0; + cdata->reader_dead = 0; + if (pthread_create(&cdata->reader, NULL, usbmuxd_client_reader_thread, cdata) != 0) { + fprintf(stderr, "%s: could not start client_reader thread\n", __func__); + cdata->reader = 0; + } + + while (!quit_flag && !cdata->reader_dead) { + result = check_fd(cdata->socket, FD_READ, DEFAULT_TIMEOUT); + if (result <= 0) { + if (result < 0) { + fprintf(stderr, "%s: Error: checkfd: %s\n", __func__, strerror(errno)); + } + continue; + } + + // check_fd told us there's data available, so read from client + // and push to USB device. + len = recv(cdata->socket, buffer, maxlen, 0); + if (len == 0) { + break; + } + if (len < 0) { + fprintf(stderr, "%s[%d:%d]: Error: recv: %s\n", __func__, cdata->duinfo->device_id, cdata->duinfo->use_count, strerror(errno)); + break; + } + + cursor = buffer; + + pthread_mutex_lock(&writer_mutex); + do { + wlen = 0; + err = iphone_mux_send(cdata->muxclient, cursor, len, &wlen); + if (err == IPHONE_E_TIMEOUT) { + // some kind of timeout... just be patient and retry. + } else if (err != IPHONE_E_SUCCESS) { + fprintf(stderr, "%s[%d:%d]: USB write error: %d\n", __func__, cdata->duinfo->device_id, cdata->duinfo->use_count, err); + len = -1; + break; + } + + // calculate remainder. + len -= wlen; + // advance cursor appropiately. + cursor += wlen; + } while ((len > 0) && !quit_flag); + pthread_mutex_unlock(&writer_mutex); + if (len < 0) { + break; + } + } + +leave: + // cleanup + fprintf(stdout, "%s[%d:%d]: terminating\n", __func__, cdata->duinfo->device_id, cdata->duinfo->use_count); + if (cdata->reader != 0) { + cdata->reader_quit = 1; + pthread_join(cdata->reader, NULL); + } + + cdata->handler_dead = 1; + + fprintf(stdout, "%s[%d:%d]: terminated\n", __func__, cdata->duinfo->device_id, cdata->duinfo->use_count); + return NULL; +} + +/** + * This thread is started when a new connection is accepted. + * It performs the handshake, then waits for the connect packet and + * on success it starts the usbmuxd_client_handler thread. + */ +static void *usbmuxd_client_init_thread(void *arg) +{ + struct client_data *cdata; + struct usbmuxd_hello hello; + struct usbmuxd_device_info_request dev_info_req; + struct usbmuxd_connect_request c_req; + + struct usb_bus *bus; + struct usb_device *dev; + + int recv_len; + int found = 0; + int res; + int i; + int sent_result; + iphone_error_t err; + + iphone_device_t phone; + struct device_use_info *cur_dev = NULL; + + if (!arg) { + fprintf(stderr, "%s: invalid client_data provided!\n", __func__); + return NULL; + } + + cdata = (struct client_data*)arg; + cdata->dead = 0; + + fprintf(stdout, "%s: started (fd=%d)\n", __func__, cdata->socket); + + if ((recv_len = usbmuxd_get_request(cdata->socket, &hello, sizeof(hello))) <= 0) { + fprintf(stderr, "%s: No Hello packet received, error %s\n", __func__, strerror(errno)); + goto leave; + } + + if ((recv_len == sizeof(hello)) && (hello.header.length == sizeof(hello)) + && (hello.header.reserved == 0) && (hello.header.type == USBMUXD_HELLO)) { + // send success response + usbmuxd_send_result(cdata->socket, hello.header.tag, 0); + } else { + // send error response and exit + fprintf(stderr, "%s: Invalid Hello packet received.\n", __func__); + // TODO is this required?! + usbmuxd_send_result(cdata->socket, hello.header.tag, EINVAL); + goto leave; + } + + // gather data about all iPhones/iPods attached + usb_init(); + usb_find_busses(); + usb_find_devices(); + + for (bus = usb_get_busses(); bus; bus = bus->next) { + for (dev = bus->devices; dev; dev = dev->next) { + if (dev->descriptor.idVendor == 0x05ac + && dev->descriptor.idProduct >= 0x1290 + && dev->descriptor.idProduct <= 0x1293) + { + fprintf(stdout, "%s: Found device on bus %d, id %d\n", __func__, bus->location, dev->devnum); + found++; + + // construct packet + memset(&dev_info_req, 0, sizeof(dev_info_req)); + dev_info_req.header.length = sizeof(dev_info_req); + dev_info_req.header.type = USBMUXD_DEVICE_INFO; + dev_info_req.device_info.device_id = dev->devnum; + dev_info_req.device_info.product_id = dev->descriptor.idProduct; + if (dev->descriptor.iSerialNumber) { + usb_dev_handle *udev; + //pthread_mutex_lock(&usbmux_mutex); + udev = usb_open(dev); + if (udev) { + usb_get_string_simple(udev, dev->descriptor.iSerialNumber, dev_info_req.device_info.serial_number, sizeof(dev_info_req.device_info.serial_number)+1); + usb_close(udev); + } + //pthread_mutex_unlock(&usbmux_mutex); + } + +#ifdef DEBUG + print_buffer((char*)&dev_info_req, sizeof(dev_info_req)); +#endif + + // send it + if (send_buf(cdata->socket, &dev_info_req, sizeof(dev_info_req)) <= 0) { + fprintf(stderr, "%s: Error: Could not send device info: %s\n", __func__, strerror(errno)); + found--; + } + } + } + } + + // now wait for connect request + if (found <= 0) { + fprintf(stderr, "%s: No attached iPhone/iPod devices found.\n", __func__); + goto leave; + } + + memset(&c_req, 0, sizeof(c_req)); + if ((recv_len = usbmuxd_get_request(cdata->socket, &c_req, sizeof(c_req))) <= 0) { + fprintf(stderr, "%s: Did not receive any connect request.\n", __func__); + goto leave; + } + + if (c_req.header.type != USBMUXD_CONNECT) { + fprintf(stderr, "%s: Unexpected packet of type %d received.\n", __func__, c_req.header.type); + goto leave; + } + + fprintf(stdout, "%s: Setting up connection to usb device #%d on port %d\n", __func__, c_req.device_id, ntohs(c_req.tcp_dport)); + + // find the device, and open usb connection + phone = NULL; + cur_dev = NULL; + // first check if we already have an open connection + if (device_use_list) { + pthread_mutex_lock(&usbmux_mutex); + for (i = 0; i < device_use_count; i++) { + if (device_use_list[i]) { + if (device_use_list[i]->device_id == c_req.device_id) { + device_use_list[i]->use_count++; + cur_dev = device_use_list[i]; + phone = cur_dev->phone; + break; + } + } + } + pthread_mutex_unlock(&usbmux_mutex); + } + if (!phone) { + // if not found, make a new connection + if (iphone_get_specific_device(0, c_req.device_id, &phone) != IPHONE_E_SUCCESS) { + fprintf(stderr, "%s: device_id %d could not be opened\n", __func__, c_req.device_id); + usbmuxd_send_result(cdata->socket, c_req.header.tag, ENODEV); + goto leave; + } + // add to device list + cur_dev = (struct device_use_info*)malloc(sizeof(struct device_use_info)); + memset(cur_dev, 0, sizeof(struct device_use_info)); + cur_dev->use_count = 1; + cur_dev->device_id = c_req.device_id; + cur_dev->phone = phone; + + fprintf(stdout, "%s: device_use_count = %d\n", __func__, device_use_count); + + pthread_mutex_lock(&usbmux_mutex); + device_use_list = (struct device_use_info**)realloc(device_use_list, sizeof(struct device_use_info*) * (device_use_count+1)); + if (device_use_list) { + device_use_list[device_use_count] = cur_dev; + device_use_count++; + } + pthread_mutex_unlock(&usbmux_mutex); + } else { + fprintf(stdout, "%s: reusing usb connection device_id %d\n", __func__, c_req.device_id); + } + + // setup connection to iPhone/iPod +// pthread_mutex_lock(&usbmux_mutex); + res = iphone_mux_new_client(cur_dev->phone, 0, ntohs(c_req.tcp_dport), &(cdata->muxclient)); +// pthread_mutex_unlock(&usbmux_mutex); + + if (res != 0) { + usbmuxd_send_result(cdata->socket, c_req.header.tag, res); + fprintf(stderr, "%s: mux_new_client returned %d, aborting.\n", __func__, res); + goto leave; + } + + // start connection handler thread + cdata->handler_dead = 0; + cdata->tag = c_req.header.tag; + cdata->duinfo = cur_dev; + if (pthread_create(&cdata->handler, NULL, usbmuxd_client_handler_thread, cdata) != 0) { + fprintf(stderr, "%s: could not create usbmuxd_client_handler_thread!\n", __func__); + cdata->handler = 0; + goto leave; + } + + sent_result = 0; + + // start reading data from the connected device + while (!quit_flag && !cdata->handler_dead) { + pthread_mutex_lock(&reader_mutex); + iphone_mux_pullbulk(cur_dev->phone); + err = iphone_mux_get_error(cdata->muxclient); + pthread_mutex_unlock(&reader_mutex); + if (err != IPHONE_E_SUCCESS) { + break; + } + } + + if (!sent_result) { + //fprintf(stderr, "Sending error message %d tag %d\n", err, c_req.header.tag); + err = iphone_mux_get_error(cdata->muxclient); + //usbmuxd_send_result(cdata->socket, c_req.header.tag, err); + } + + fprintf(stdout, "%s: terminating\n", __func__); + + // wait for handler thread to finish its work + if (cdata->handler != 0) { + pthread_join(cdata->handler, NULL); + } + + // time to clean up + if (cdata && cdata->muxclient) { // should be non-NULL + iphone_mux_free_client(cdata->muxclient); + } + +leave: + // this has to be freed only if it's not in use anymore as it closes + // the USB connection + if (cur_dev) { + if (cur_dev->use_count > 1) { + cur_dev->use_count--; + } else { + iphone_free_device(cur_dev->phone); + cur_dev->use_count = 0; + free(cur_dev); + cur_dev = NULL; + pthread_mutex_lock(&usbmux_mutex); + if (device_use_count > 1) { + struct device_use_info **newlist; + int j; + + newlist = (struct device_use_info**)malloc(sizeof(struct device_use_info*) * device_use_count-1); + for (i = 0; i < device_use_count; i++) { + if (device_use_list[i] != NULL) { + newlist[j++] = device_use_list[i]; + } + } + free(device_use_list); + device_use_list = newlist; + } else { + free(device_use_list); + device_use_list = NULL; + } + pthread_mutex_unlock(&usbmux_mutex); + } + } + + cdata->dead = 1; + close(cdata->socket); + + fprintf(stdout, "%s: terminated\n", __func__); + + return NULL; +} + +/** + * make this program run detached from the current console + */ +static int daemonize() +{ + // TODO still to be implemented, also logging is missing! + return 0; +} + +/** + * signal handler function for cleaning up properly + */ +static void clean_exit(int sig) +{ + if (sig == SIGINT) { + fprintf(stdout, "CTRL+C pressed\n"); + } + quit_flag = 1; +} + +/** + * thread function that performs accept() and starts the required child + * threads to perform the rest of the communication stuff. + */ +static void *usbmuxd_accept_thread(void *arg) +{ + struct sockaddr_un c_addr; + socklen_t len = sizeof(struct sockaddr_un); + struct client_data *cdata; + struct client_data **children = NULL; + int children_capacity = DEFAULT_CHILDREN_CAPACITY; + int i = 0; + int result = 0; + int cnt; + + // Reserve space for 10 clients which should be enough. If not, the + // buffer gets enlarged later. + children = (struct client_data**)malloc(sizeof(struct client_data*) * children_capacity); + if (!children) { + fprintf(stderr, "%s: Out of memory when allocating memory for child threads. Terminating.\n", __func__); + exit(EXIT_FAILURE); + } + memset(children, 0, sizeof(struct client_data*) * children_capacity); + + fprintf(stdout, "%s: waiting for connection\n", __func__); + while (!quit_flag) { + // Check the file descriptor before accepting a connection. + // If no connection attempt is made, just repeat... + result = check_fd(fsock, FD_READ, 1000); + if (result <= 0) { + if (result == 0) { + // cleanup + for (i = 0; i < children_capacity; i++) { + if (children[i]) { + if (children[i]->dead != 0) { + pthread_join(children[i]->thread, NULL); + fprintf(stdout, "%s: reclaimed client thread (fd=%d)\n", __func__, children[i]->socket); + free(children[i]); + children[i] = NULL; + cnt++; + } else { + cnt = 0; + } + } else { + cnt++; + } + } + + if ((children_capacity > DEFAULT_CHILDREN_CAPACITY) + && ((children_capacity - cnt) <= DEFAULT_CHILDREN_CAPACITY)) { + children_capacity = DEFAULT_CHILDREN_CAPACITY; + children = realloc(children, sizeof(struct client_data*) * children_capacity); + } + continue; + } else { + fprintf(stderr, "select error: %s\n", strerror(errno)); + continue; + } + } + + cdata = (struct client_data*)malloc(sizeof(struct client_data)); + memset(cdata, 0, sizeof(struct client_data)); + if (!cdata) { + quit_flag = 1; + fprintf(stderr, "%s: Error: Out of memory! Terminating.\n", __func__); + break; + } + + cdata->socket = accept(fsock, (struct sockaddr*)&c_addr, &len); + if (cdata->socket < 0) { + free(cdata); + if (errno == EINTR) { + continue; + } else { + fprintf(stderr, "%s: Error in accept: %s\n", __func__, strerror(errno)); + continue; + } + } + + fprintf(stdout, "%s: new client connected (fd=%d)\n", __func__, cdata->socket); + + // create client thread: + if (pthread_create(&cdata->thread, NULL, usbmuxd_client_init_thread, cdata) == 0) { + for (i = 0; i < children_capacity; i++) { + if (children[i] == NULL) break; + } + if (i == children_capacity) { + // enlarge buffer + children_capacity++; + children = realloc(children, sizeof(struct client_data*) * children_capacity); + if (!children) { + fprintf(stderr, "%s: Out of memory when enlarging child thread buffer\n", __func__); + } + } + children[i] = cdata; + } else { + fprintf(stderr, "%s: Failed to create client_init_thread.\n", __func__); + close(cdata->socket); + free(cdata); + cdata = NULL; + } + } + + fprintf(stdout, "%s: terminating\n", __func__); + + // preparing for shutdown: wait for child threads to terminate (if any) + fprintf(stdout, "%s: waiting for child threads to terminate...\n", __func__); + for (i = 0; i < children_capacity; i++) { + if (children[i] != NULL) { + pthread_join(children[i]->thread, NULL); + free(children[i]); + } + } + + // delete the children set. + free(children); + children = NULL; + + fprintf(stdout, "%s: terminated.\n", __func__); + + return NULL; +} + +/** + * main function. + */ +int main(int argc, char **argv) +{ + int foreground = 1; + pthread_t acceptor; + + fprintf(stdout, "usbmuxd: starting\n"); + + // TODO: Parameter checking. + + fsock = create_unix_socket(USBMUXD_SOCKET_FILE); + if (fsock < 0) { + fprintf(stderr, "Could not create socket, exiting\n"); + return -1; + } + + chmod(USBMUXD_SOCKET_FILE, 0666); + + if (!foreground) { + if (daemonize() < 0) { + exit(EXIT_FAILURE); + } + } + + // signal(SIGHUP, reload_conf); // none yet + signal(SIGINT, clean_exit); + signal(SIGQUIT, clean_exit); + signal(SIGTERM, clean_exit); + signal(SIGPIPE, SIG_IGN); + + if (pthread_create(&acceptor, NULL, usbmuxd_accept_thread, NULL) != 0) { + fprintf(stderr, "Failed to create server thread.\n"); + close(fsock); + return -1; + } + + // Relax here. Just wait for the accept thread to terminate. + pthread_join(acceptor, NULL); + + fprintf(stdout, "usbmuxd: terminating\n"); + if (fsock >= 0) { + close(fsock); + } + + unlink(USBMUXD_SOCKET_FILE); + + return 0; +} + -- cgit v1.1-32-gdbae