From f4758e8b15cd30fe3f7f18de42e2ea20bc5696f0 Mon Sep 17 00:00:00 2001 From: Nikias Bassen Date: Tue, 17 Sep 2013 11:30:01 +0200 Subject: remove libusbmuxd sources and adapt source tree to use autotools libusbmuxd has been split off and is now managed in a separate repository. By the time of this commit, the repository is: git clone http://git.sukimashita.com/libusbmuxd.git --- daemon/CMakeLists.txt | 23 -- daemon/client.c | 616 --------------------------------------- daemon/client.h | 47 --- daemon/device.c | 781 -------------------------------------------------- daemon/device.h | 52 ---- daemon/log.c | 95 ------ daemon/log.h | 44 --- daemon/main.c | 618 --------------------------------------- daemon/usb-linux.c | 598 -------------------------------------- daemon/usb.h | 66 ----- 10 files changed, 2940 deletions(-) delete mode 100644 daemon/CMakeLists.txt delete mode 100644 daemon/client.c delete mode 100644 daemon/client.h delete mode 100644 daemon/device.c delete mode 100644 daemon/device.h delete mode 100644 daemon/log.c delete mode 100644 daemon/log.h delete mode 100644 daemon/main.c delete mode 100644 daemon/usb-linux.c delete mode 100644 daemon/usb.h (limited to 'daemon') diff --git a/daemon/CMakeLists.txt b/daemon/CMakeLists.txt deleted file mode 100644 index c323f7b..0000000 --- a/daemon/CMakeLists.txt +++ /dev/null @@ -1,23 +0,0 @@ -find_package(USB REQUIRED) -include_directories(${USB_INCLUDE_DIRS}) -include_directories(${OPT_INCLUDES}) -set(LIBS ${LIBS} ${USB_LIBRARIES} ${OPT_LIBS}) -if(HAVE_PLIST) - add_definitions("-DHAVE_PLIST") - message("-- usbmuxd will be built with protocol version 1 support") -endif() -include_directories (${CMAKE_SOURCE_DIR}/common) -include_directories (${CMAKE_SOURCE_DIR}/daemon) -include_directories (${CMAKE_SOURCE_DIR}/libusbmuxd) - -add_definitions(-DUSBMUXD_DAEMON -DUSBMUXD_VERSION="${USBMUXD_VERSION}") -add_executable(usbmuxd main.c usb-linux.c log.c ${CMAKE_SOURCE_DIR}/common/utils.c device.c client.c) -target_link_libraries(usbmuxd ${LIBS}) - -install(TARGETS usbmuxd RUNTIME DESTINATION sbin) - -message(" -* REMINDER -* Remember to add a user named 'usbmux' with USB access permissions -* for the udev hotplugging feature to work out of the box. -") diff --git a/daemon/client.c b/daemon/client.c deleted file mode 100644 index ac1045a..0000000 --- a/daemon/client.c +++ /dev/null @@ -1,616 +0,0 @@ -/* - usbmuxd - iPhone/iPod Touch USB multiplex server daemon - -Copyright (C) 2009 Hector Martin "marcan" -Copyright (C) 2009 Nikias Bassen - -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 or version 3. - -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 - -*/ - -#ifdef HAVE_CONFIG_H -#include -#endif - -#include -#include -#include -#include -#include -#include -#include -#include - -#ifdef HAVE_PLIST -#include -#endif - -#include "log.h" -#include "usb.h" -#include "client.h" -#include "device.h" - -#ifdef HAVE_PLIST -#define CMD_BUF_SIZE 1024 -#else -#define CMD_BUF_SIZE 256 -#endif -#define REPLY_BUF_SIZE 1024 - -enum client_state { - CLIENT_COMMAND, // waiting for command - CLIENT_LISTEN, // listening for devices - CLIENT_CONNECTING1, // issued connection request - CLIENT_CONNECTING2, // connection established, but waiting for response message to get sent - CLIENT_CONNECTED, // connected - CLIENT_DEAD -}; - -struct mux_client { - int fd; - unsigned char *ob_buf; - uint32_t ob_size; - uint32_t ob_capacity; - unsigned char *ib_buf; - uint32_t ib_size; - uint32_t ib_capacity; - short events, devents; - uint32_t connect_tag; - int connect_device; - enum client_state state; - uint32_t proto_version; -}; - -static struct collection client_list; - -int client_read(struct mux_client *client, void *buffer, uint32_t len) -{ - usbmuxd_log(LL_SPEW, "client_read fd %d buf %p len %d", client->fd, buffer, len); - if(client->state != CLIENT_CONNECTED) { - usbmuxd_log(LL_ERROR, "Attempted to read from client %d not in CONNECTED state", client->fd); - return -1; - } - return recv(client->fd, buffer, len, 0); -} - -int client_write(struct mux_client *client, void *buffer, uint32_t len) -{ - usbmuxd_log(LL_SPEW, "client_write fd %d buf %p len %d", client->fd, buffer, len); - if(client->state != CLIENT_CONNECTED) { - usbmuxd_log(LL_ERROR, "Attempted to write to client %d not in CONNECTED state", client->fd); - return -1; - } - return send(client->fd, buffer, len, 0); -} - -int client_set_events(struct mux_client *client, short events) -{ - if((client->state != CLIENT_CONNECTED) && (client->state != CLIENT_CONNECTING2)) { - usbmuxd_log(LL_ERROR, "client_set_events to client %d not in CONNECTED state", client->fd); - return -1; - } - client->devents = events; - if(client->state == CLIENT_CONNECTED) - client->events = events; - return 0; -} - -int client_accept(int listenfd) -{ - struct sockaddr_un addr; - int cfd; - socklen_t len = sizeof(struct sockaddr_un); - cfd = accept(listenfd, (struct sockaddr *)&addr, &len); - if (cfd < 0) { - usbmuxd_log(LL_ERROR, "accept() failed (%s)", strerror(errno)); - return cfd; - } - - struct mux_client *client; - client = malloc(sizeof(struct mux_client)); - memset(client, 0, sizeof(struct mux_client)); - - client->fd = cfd; - client->ob_buf = malloc(REPLY_BUF_SIZE); - client->ob_size = 0; - client->ob_capacity = REPLY_BUF_SIZE; - client->ib_buf = malloc(CMD_BUF_SIZE); - client->ib_size = 0; - client->ib_capacity = CMD_BUF_SIZE; - client->state = CLIENT_COMMAND; - client->events = POLLIN; - - collection_add(&client_list, client); - - usbmuxd_log(LL_INFO, "New client on fd %d", client->fd); - return client->fd; -} - -void client_close(struct mux_client *client) -{ - usbmuxd_log(LL_INFO, "Disconnecting client fd %d", client->fd); - if(client->state == CLIENT_CONNECTING1 || client->state == CLIENT_CONNECTING2) { - usbmuxd_log(LL_INFO, "Client died mid-connect, aborting device %d connection", client->connect_device); - client->state = CLIENT_DEAD; - device_abort_connect(client->connect_device, client); - } - close(client->fd); - if(client->ob_buf) - free(client->ob_buf); - if(client->ib_buf) - free(client->ib_buf); - collection_remove(&client_list, client); - free(client); -} - -void client_get_fds(struct fdlist *list) -{ - FOREACH(struct mux_client *client, &client_list) { - fdlist_add(list, FD_CLIENT, client->fd, client->events); - } ENDFOREACH -} - -static int send_pkt(struct mux_client *client, uint32_t tag, enum usbmuxd_msgtype msg, void *payload, int payload_length) -{ - struct usbmuxd_header hdr; - hdr.version = client->proto_version; - hdr.length = sizeof(hdr) + payload_length; - hdr.message = msg; - hdr.tag = tag; - usbmuxd_log(LL_DEBUG, "send_pkt fd %d tag %d msg %d payload_length %d", client->fd, tag, msg, payload_length); - if((client->ob_capacity - client->ob_size) < hdr.length) { - usbmuxd_log(LL_ERROR, "Client %d output buffer full (%d bytes) while sending message %d (%d bytes)", client->fd, client->ob_capacity, hdr.message, hdr.length); - client_close(client); - return -1; - } - memcpy(client->ob_buf + client->ob_size, &hdr, sizeof(hdr)); - if(payload && payload_length) - memcpy(client->ob_buf + client->ob_size + sizeof(hdr), payload, payload_length); - client->ob_size += hdr.length; - client->events |= POLLOUT; - return hdr.length; -} - -static int send_result(struct mux_client *client, uint32_t tag, uint32_t result) -{ - int res = -1; -#ifdef HAVE_PLIST - if (client->proto_version == 1) { - /* XML plist packet */ - char *xml = NULL; - uint32_t xmlsize = 0; - plist_t dict = plist_new_dict(); - plist_dict_insert_item(dict, "MessageType", plist_new_string("Result")); - plist_dict_insert_item(dict, "Number", plist_new_uint(result)); - plist_to_xml(dict, &xml, &xmlsize); - plist_free(dict); - if (xml) { - res = send_pkt(client, tag, MESSAGE_PLIST, xml, xmlsize); - free(xml); - } else { - usbmuxd_log(LL_ERROR, "%s: Could not convert plist to xml", __func__); - } - } else -#endif - { - /* binary packet */ - res = send_pkt(client, tag, MESSAGE_RESULT, &result, sizeof(uint32_t)); - } - return res; -} - -int client_notify_connect(struct mux_client *client, enum usbmuxd_result result) -{ - usbmuxd_log(LL_SPEW, "client_notify_connect fd %d result %d", client->fd, result); - if(client->state == CLIENT_DEAD) - return -1; - if(client->state != CLIENT_CONNECTING1) { - usbmuxd_log(LL_ERROR, "client_notify_connect when client %d is not in CONNECTING1 state", client->fd); - return -1; - } - if(send_result(client, client->connect_tag, result) < 0) - return -1; - if(result == RESULT_OK) { - client->state = CLIENT_CONNECTING2; - client->events = POLLOUT; // wait for the result packet to go through - // no longer need this - free(client->ib_buf); - client->ib_buf = NULL; - } else { - client->state = CLIENT_COMMAND; - } - return 0; -} - -static int notify_device_add(struct mux_client *client, struct device_info *dev) -{ - int res = -1; -#ifdef HAVE_PLIST - if (client->proto_version == 1) { - /* XML plist packet */ - char *xml = NULL; - uint32_t xmlsize = 0; - plist_t dict = plist_new_dict(); - plist_dict_insert_item(dict, "MessageType", plist_new_string("Attached")); - plist_t props = plist_new_dict(); - // TODO: get current usb speed - plist_dict_insert_item(props, "ConnectionSpeed", plist_new_uint(480000000)); - plist_dict_insert_item(props, "ConnectionType", plist_new_string("USB")); - plist_dict_insert_item(props, "DeviceID", plist_new_uint(dev->id)); - plist_dict_insert_item(props, "LocationID", plist_new_uint(dev->location)); - plist_dict_insert_item(props, "ProductID", plist_new_uint(dev->pid)); - plist_dict_insert_item(props, "SerialNumber", plist_new_string(dev->serial)); - plist_dict_insert_item(dict, "Properties", props); - plist_to_xml(dict, &xml, &xmlsize); - plist_free(dict); - if (xml) { - res = send_pkt(client, 0, MESSAGE_PLIST, xml, xmlsize); - free(xml); - } else { - usbmuxd_log(LL_ERROR, "%s: Could not convert plist to xml", __func__); - } - } else -#endif - { - /* binary packet */ - struct usbmuxd_device_record dmsg; - memset(&dmsg, 0, sizeof(dmsg)); - dmsg.device_id = dev->id; - strncpy(dmsg.serial_number, dev->serial, 256); - dmsg.serial_number[255] = 0; - dmsg.location = dev->location; - dmsg.product_id = dev->pid; - res = send_pkt(client, 0, MESSAGE_DEVICE_ADD, &dmsg, sizeof(dmsg)); - } - return res; -} - -static int notify_device_remove(struct mux_client *client, uint32_t device_id) -{ - int res = -1; -#ifdef HAVE_PLIST - if (client->proto_version == 1) { - /* XML plist packet */ - char *xml = NULL; - uint32_t xmlsize = 0; - plist_t dict = plist_new_dict(); - plist_dict_insert_item(dict, "MessageType", plist_new_string("Detached")); - plist_dict_insert_item(dict, "DeviceID", plist_new_uint(device_id)); - plist_to_xml(dict, &xml, &xmlsize); - plist_free(dict); - if (xml) { - res = send_pkt(client, 0, MESSAGE_PLIST, xml, xmlsize); - free(xml); - } else { - usbmuxd_log(LL_ERROR, "%s: Could not convert plist to xml", __func__); - } - } else -#endif - { - /* binary packet */ - res = send_pkt(client, 0, MESSAGE_DEVICE_REMOVE, &device_id, sizeof(uint32_t)); - } - return res; -} - -static int start_listen(struct mux_client *client) -{ - struct device_info *devs; - struct device_info *dev; - int count, i; - - client->state = CLIENT_LISTEN; - count = device_get_count(); - if(!count) - return 0; - devs = malloc(sizeof(struct device_info) * count); - count = device_get_list(devs); - - // going to need a larger buffer for many devices - int needed_buffer = count * (sizeof(struct usbmuxd_device_record) + sizeof(struct usbmuxd_header)) + REPLY_BUF_SIZE; - if(client->ob_capacity < needed_buffer) { - usbmuxd_log(LL_DEBUG, "Enlarging client %d reply buffer %d -> %d to make space for device notifications", client->fd, client->ob_capacity, needed_buffer); - client->ob_buf = realloc(client->ob_buf, needed_buffer); - client->ob_capacity = needed_buffer; - } - dev = devs; - for(i=0; ifd, hdr->length, hdr->version, hdr->message, hdr->tag); - - if(client->state != CLIENT_COMMAND) { - usbmuxd_log(LL_ERROR, "Client %d command received in the wrong state", client->fd); - if(send_result(client, hdr->tag, RESULT_BADCOMMAND) < 0) - return -1; - client_close(client); - return -1; - } - - struct usbmuxd_connect_request *ch; -#ifdef HAVE_PLIST - char *payload; - uint32_t payload_size; -#endif - - switch(hdr->message) { -#ifdef HAVE_PLIST - case MESSAGE_PLIST: - client->proto_version = 1; - payload = (char*)(hdr) + sizeof(struct usbmuxd_header); - payload_size = hdr->length - sizeof(struct usbmuxd_header); - plist_t dict = NULL; - plist_from_xml(payload, payload_size, &dict); - if (!dict) { - usbmuxd_log(LL_ERROR, "Could not parse plist from payload!"); - return -1; - } else { - char *message = NULL; - plist_t node = plist_dict_get_item(dict, "MessageType"); - plist_get_string_val(node, &message); - if (!message) { - usbmuxd_log(LL_ERROR, "Could not extract MessageType from plist!"); - plist_free(dict); - return -1; - } - if (!strcmp(message, "Listen")) { - free(message); - plist_free(dict); - if (send_result(client, hdr->tag, 0) < 0) - return -1; - usbmuxd_log(LL_DEBUG, "Client %d now LISTENING", client->fd); - return start_listen(client); - } else if (!strcmp(message, "Connect")) { - uint64_t val; - uint16_t portnum = 0; - uint32_t device_id = 0; - free(message); - // get device id - node = plist_dict_get_item(dict, "DeviceID"); - if (!node) { - usbmuxd_log(LL_ERROR, "Received connect request without device_id!"); - plist_free(dict); - if (send_result(client, hdr->tag, RESULT_BADDEV) < 0) - return -1; - return 0; - } - val = 0; - plist_get_uint_val(node, &val); - device_id = (uint32_t)val; - - // get port number - node = plist_dict_get_item(dict, "PortNumber"); - if (!node) { - usbmuxd_log(LL_ERROR, "Received connect request without port number!"); - plist_free(dict); - if (send_result(client, hdr->tag, RESULT_BADCOMMAND) < 0) - return -1; - return 0; - } - val = 0; - plist_get_uint_val(node, &val); - portnum = (uint16_t)val; - - usbmuxd_log(LL_DEBUG, "Client %d connection request to device %d port %d", client->fd, device_id, ntohs(portnum)); - res = device_start_connect(device_id, ntohs(portnum), client); - if(res < 0) { - if (send_result(client, hdr->tag, -res) < 0) - return -1; - } else { - client->connect_tag = hdr->tag; - client->connect_device = device_id; - client->state = CLIENT_CONNECTING1; - } - return 0; - } else { - usbmuxd_log(LL_ERROR, "Unexpected command '%s' received!", message); - free(message); - plist_free(dict); - if (send_result(client, hdr->tag, RESULT_BADCOMMAND) < 0) - return -1; - return 0; - } - } - // should not be reached?! - return -1; -#endif - case MESSAGE_LISTEN: - if(send_result(client, hdr->tag, 0) < 0) - return -1; - usbmuxd_log(LL_DEBUG, "Client %d now LISTENING", client->fd); - return start_listen(client); - case MESSAGE_CONNECT: - ch = (void*)hdr; - usbmuxd_log(LL_DEBUG, "Client %d connection request to device %d port %d", client->fd, ch->device_id, ntohs(ch->port)); - res = device_start_connect(ch->device_id, ntohs(ch->port), client); - if(res < 0) { - if(send_result(client, hdr->tag, -res) < 0) - return -1; - } else { - client->connect_tag = hdr->tag; - client->connect_device = ch->device_id; - client->state = CLIENT_CONNECTING1; - } - return 0; - default: - usbmuxd_log(LL_ERROR, "Client %d invalid command %d", client->fd, hdr->message); - if(send_result(client, hdr->tag, RESULT_BADCOMMAND) < 0) - return -1; - return 0; - } - return -1; -} - -static void process_send(struct mux_client *client) -{ - int res; - if(!client->ob_size) { - usbmuxd_log(LL_WARNING, "Client %d OUT process but nothing to send?", client->fd); - client->events &= ~POLLOUT; - return; - } - res = send(client->fd, client->ob_buf, client->ob_size, 0); - if(res <= 0) { - usbmuxd_log(LL_ERROR, "Send to client fd %d failed: %d %s", client->fd, res, strerror(errno)); - client_close(client); - return; - } - if(res == client->ob_size) { - client->ob_size = 0; - client->events &= ~POLLOUT; - if(client->state == CLIENT_CONNECTING2) { - usbmuxd_log(LL_DEBUG, "Client %d switching to CONNECTED state", client->fd); - client->state = CLIENT_CONNECTED; - client->events = client->devents; - // no longer need this - free(client->ob_buf); - client->ob_buf = NULL; - } - } else { - client->ob_size -= res; - memmove(client->ob_buf, client->ob_buf + res, client->ob_size); - } -} -static void process_recv(struct mux_client *client) -{ - int res; - int did_read = 0; - if(client->ib_size < sizeof(struct usbmuxd_header)) { - res = recv(client->fd, client->ib_buf + client->ib_size, sizeof(struct usbmuxd_header) - client->ib_size, 0); - if(res <= 0) { - if(res < 0) - usbmuxd_log(LL_ERROR, "Receive from client fd %d failed: %s", client->fd, strerror(errno)); - else - usbmuxd_log(LL_INFO, "Client %d connection closed", client->fd); - client_close(client); - return; - } - client->ib_size += res; - if(client->ib_size < sizeof(struct usbmuxd_header)) - return; - did_read = 1; - } - struct usbmuxd_header *hdr = (void*)client->ib_buf; -#ifdef HAVE_PLIST - if((hdr->version != 0) && (hdr->version != 1)) { - usbmuxd_log(LL_INFO, "Client %d version mismatch: expected 0 or 1, got %d", client->fd, hdr->version); -#else - if(hdr->version != USBMUXD_PROTOCOL_VERSION) { - usbmuxd_log(LL_INFO, "Client %d version mismatch: expected %d, got %d", client->fd, USBMUXD_PROTOCOL_VERSION, hdr->version); -#endif - client_close(client); - return; - } - if(hdr->length > client->ib_capacity) { - usbmuxd_log(LL_INFO, "Client %d message is too long (%d bytes)", client->fd, hdr->length); - client_close(client); - return; - } - if(hdr->length < sizeof(struct usbmuxd_header)) { - usbmuxd_log(LL_ERROR, "Client %d message is too short (%d bytes)", client->fd, hdr->length); - client_close(client); - return; - } - if(client->ib_size < hdr->length) { - if(did_read) - return; //maybe we would block, so defer to next loop - res = recv(client->fd, client->ib_buf + client->ib_size, hdr->length - client->ib_size, 0); - if(res < 0) { - usbmuxd_log(LL_ERROR, "Receive from client fd %d failed: %s", client->fd, strerror(errno)); - client_close(client); - return; - } else if(res == 0) { - usbmuxd_log(LL_INFO, "Client %d connection closed", client->fd); - client_close(client); - return; - } - client->ib_size += res; - if(client->ib_size < hdr->length) - return; - } - client_command(client, hdr); - client->ib_size = 0; -} - -void client_process(int fd, short events) -{ - struct mux_client *client = NULL; - FOREACH(struct mux_client *lc, &client_list) { - if(lc->fd == fd) { - client = lc; - break; - } - } ENDFOREACH - - if(!client) { - usbmuxd_log(LL_INFO, "client_process: fd %d not found in client list", fd); - return; - } - - if(client->state == CLIENT_CONNECTED) { - usbmuxd_log(LL_SPEW, "client_process in CONNECTED state"); - device_client_process(client->connect_device, client, events); - } else { - if(events & POLLIN) { - process_recv(client); - } else if(events & POLLOUT) { //not both in case client died as part of process_recv - process_send(client); - } - } - -} - -void client_device_add(struct device_info *dev) -{ - usbmuxd_log(LL_DEBUG, "client_device_add: id %d, location 0x%x, serial %s", dev->id, dev->location, dev->serial); - FOREACH(struct mux_client *client, &client_list) { - if(client->state == CLIENT_LISTEN) - notify_device_add(client, dev); - } ENDFOREACH -} -void client_device_remove(int device_id) -{ - uint32_t id = device_id; - usbmuxd_log(LL_DEBUG, "client_device_remove: id %d", device_id); - FOREACH(struct mux_client *client, &client_list) { - if(client->state == CLIENT_LISTEN) - notify_device_remove(client, id); - } ENDFOREACH -} - - -void client_init(void) -{ - usbmuxd_log(LL_DEBUG, "client_init"); - collection_init(&client_list); -} - -void client_shutdown(void) -{ - usbmuxd_log(LL_DEBUG, "client_shutdown"); - FOREACH(struct mux_client *client, &client_list) { - client_close(client); - } ENDFOREACH - collection_free(&client_list); -} diff --git a/daemon/client.h b/daemon/client.h deleted file mode 100644 index 60d8348..0000000 --- a/daemon/client.h +++ /dev/null @@ -1,47 +0,0 @@ -/* - usbmuxd - iPhone/iPod Touch USB multiplex server daemon - -Copyright (C) 2009 Hector Martin "marcan" -Copyright (C) 2009 Nikias Bassen - -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 or version 3. - -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 - -*/ - -#ifndef __CLIENT_H__ -#define __CLIENT_H__ - -#include -#include "usbmuxd-proto.h" - -struct device_info; -struct mux_client; - -int client_read(struct mux_client *client, void *buffer, uint32_t len); -int client_write(struct mux_client *client, void *buffer, uint32_t len); -int client_set_events(struct mux_client *client, short events); -void client_close(struct mux_client *client); -int client_notify_connect(struct mux_client *client, enum usbmuxd_result result); - -void client_device_add(struct device_info *dev); -void client_device_remove(int device_id); - -int client_accept(int fd); -void client_get_fds(struct fdlist *list); -void client_process(int fd, short events); - -void client_init(void); -void client_shutdown(void); - -#endif diff --git a/daemon/device.c b/daemon/device.c deleted file mode 100644 index 8c786a7..0000000 --- a/daemon/device.c +++ /dev/null @@ -1,781 +0,0 @@ -/* - usbmuxd - iPhone/iPod Touch USB multiplex server daemon - -Copyright (C) 2009 Hector Martin "marcan" - -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 or version 3. - -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 - -*/ - -#define _BSD_SOURCE - -#ifdef HAVE_CONFIG_H -#include -#endif - -#include -#include -#include -#include -#include -#include -#include -#include "device.h" -#include "client.h" -#include "usb.h" -#include "log.h" - -int next_device_id; - -#define DEV_MRU 65536 - -#define CONN_INBUF_SIZE 262144 -#define CONN_OUTBUF_SIZE 65536 - -#define ACK_TIMEOUT 30 - -enum mux_protocol { - MUX_PROTO_VERSION = 0, - MUX_PROTO_TCP = IPPROTO_TCP, -}; - -enum mux_dev_state { - MUXDEV_INIT, // sent version packet - MUXDEV_ACTIVE, // received version packet, active - MUXDEV_DEAD // dead -}; - -enum mux_conn_state { - CONN_CONNECTING, // SYN - CONN_CONNECTED, // SYN/SYNACK/ACK -> active - CONN_REFUSED, // RST received during SYN - CONN_DYING, // RST received - CONN_DEAD // being freed; used to prevent infinite recursion between client<->device freeing -}; - -struct mux_header -{ - uint32_t protocol; - uint32_t length; -}; - -struct version_header -{ - uint32_t major; - uint32_t minor; - uint32_t padding; -}; - -struct mux_device; - -#define CONN_ACK_PENDING 1 - -struct mux_connection -{ - struct mux_device *dev; - struct mux_client *client; - enum mux_conn_state state; - uint16_t sport, dport; - uint32_t tx_seq, tx_ack, tx_acked, tx_win; - uint32_t rx_seq, rx_recvd, rx_ack, rx_win; - uint32_t max_payload; - uint32_t sendable; - int flags; - unsigned char *ib_buf; - uint32_t ib_size; - uint32_t ib_capacity; - unsigned char *ob_buf; - uint32_t ob_capacity; - short events; - uint64_t last_ack_time; -}; - -struct mux_device -{ - struct usb_device *usbdev; - int id; - enum mux_dev_state state; - struct collection connections; - uint16_t next_sport; - unsigned char *pktbuf; - uint32_t pktlen; -}; - -static struct collection device_list; - -uint64_t mstime64(void) -{ - struct timeval tv; - gettimeofday(&tv, NULL); - return tv.tv_sec * 1000 + tv.tv_usec / 1000; -} - -static int get_next_device_id(void) -{ - while(1) { - int ok = 1; - FOREACH(struct mux_device *dev, &device_list) { - if(dev->id == next_device_id) { - next_device_id++; - ok = 0; - break; - } - } ENDFOREACH - if(ok) - return next_device_id++; - } -} - -static int send_packet(struct mux_device *dev, enum mux_protocol proto, void *header, const void *data, int length) -{ - unsigned char *buffer; - int hdrlen; - int res; - - switch(proto) { - case MUX_PROTO_VERSION: - hdrlen = sizeof(struct version_header); - break; - case MUX_PROTO_TCP: - hdrlen = sizeof(struct tcphdr); - break; - default: - usbmuxd_log(LL_ERROR, "Invalid protocol %d for outgoing packet (dev %d hdr %p data %p len %d)", proto, dev->id, header, data, length); - return -1; - } - usbmuxd_log(LL_SPEW, "send_packet(%d, 0x%x, %p, %p, %d)", dev->id, proto, header, data, length); - - int total = sizeof(struct mux_header) + hdrlen + length; - - if(total > USB_MTU) { - usbmuxd_log(LL_ERROR, "Tried to send packet larger than USB MTU (hdr %d data %d total %d) to device %d", hdrlen, length, total, dev->id); - return -1; - } - - buffer = malloc(total); - struct mux_header *mhdr = (struct mux_header *)buffer; - mhdr->protocol = htonl(proto); - mhdr->length = htonl(total); - memcpy(buffer + sizeof(struct mux_header), header, hdrlen); - if(data && length) - memcpy(buffer + sizeof(struct mux_header) + hdrlen, data, length); - - if((res = usb_send(dev->usbdev, buffer, total)) < 0) { - usbmuxd_log(LL_ERROR, "usb_send failed while sending packet (len %d) to device %d: %d", total, dev->id, res); - free(buffer); - return res; - } - return total; -} - -static uint16_t find_sport(struct mux_device *dev) -{ - if(collection_count(&dev->connections) >= 65535) - return 0; //insanity - - while(1) { - int ok = 1; - FOREACH(struct mux_connection *conn, &dev->connections) { - if(dev->next_sport == conn->sport) { - dev->next_sport++; - ok = 0; - break; - } - } ENDFOREACH - if(ok) - return dev->next_sport++; - } -} - -static int send_anon_rst(struct mux_device *dev, uint16_t sport, uint16_t dport, uint32_t ack) -{ - struct tcphdr th; - memset(&th, 0, sizeof(th)); - th.th_sport = htons(sport); - th.th_dport = htons(dport); - th.th_ack = htonl(ack); - th.th_flags = TH_RST; - th.th_off = sizeof(th) / 4; - - usbmuxd_log(LL_DEBUG, "[OUT] dev=%d sport=%d dport=%d flags=0x%x", dev->id, sport, dport, th.th_flags); - - int res = send_packet(dev, MUX_PROTO_TCP, &th, NULL, 0); - return res; -} - -static int send_tcp(struct mux_connection *conn, uint8_t flags, const unsigned char *data, int length) -{ - struct tcphdr th; - memset(&th, 0, sizeof(th)); - th.th_sport = htons(conn->sport); - th.th_dport = htons(conn->dport); - th.th_seq = htonl(conn->tx_seq); - th.th_ack = htonl(conn->tx_ack); - th.th_flags = flags; - th.th_off = sizeof(th) / 4; - th.th_win = htons(conn->tx_win >> 8); - - usbmuxd_log(LL_DEBUG, "[OUT] dev=%d sport=%d dport=%d seq=%d ack=%d flags=0x%x window=%d[%d] len=%d", - conn->dev->id, conn->sport, conn->dport, conn->tx_seq, conn->tx_ack, flags, conn->tx_win, conn->tx_win >> 8, length); - - int res = send_packet(conn->dev, MUX_PROTO_TCP, &th, data, length); - if(res >= 0) { - conn->tx_acked = conn->tx_ack; - conn->last_ack_time = mstime64(); - conn->flags &= ~CONN_ACK_PENDING; - } - return res; -} - -static void connection_teardown(struct mux_connection *conn) -{ - int res; - if(conn->state == CONN_DEAD) - return; - usbmuxd_log(LL_DEBUG, "connection_teardown dev %d sport %d dport %d", conn->dev->id, conn->sport, conn->dport); - if(conn->dev->state != MUXDEV_DEAD && conn->state != CONN_DYING && conn->state != CONN_REFUSED) { - res = send_tcp(conn, TH_RST, NULL, 0); - if(res < 0) - usbmuxd_log(LL_ERROR, "Error sending TCP RST to device %d (%d->%d)", conn->dev->id, conn->sport, conn->dport); - } - if(conn->client) { - if(conn->state == CONN_REFUSED || conn->state == CONN_CONNECTING) { - client_notify_connect(conn->client, RESULT_CONNREFUSED); - } else { - conn->state = CONN_DEAD; - client_close(conn->client); - } - } - if(conn->ib_buf) - free(conn->ib_buf); - if(conn->ob_buf) - free(conn->ob_buf); - collection_remove(&conn->dev->connections, conn); - free(conn); -} - -int device_start_connect(int device_id, uint16_t dport, struct mux_client *client) -{ - struct mux_device *dev = NULL; - FOREACH(struct mux_device *cdev, &device_list) { - if(cdev->id == device_id) { - dev = cdev; - break; - } - } ENDFOREACH - if(!dev) { - usbmuxd_log(LL_WARNING, "Attempted to connect to nonexistent device %d", device_id); - return -RESULT_BADDEV; - } - - uint16_t sport = find_sport(dev); - if(!sport) { - usbmuxd_log(LL_WARNING, "Unable to allocate port for device %d", device_id); - return -RESULT_BADDEV; - } - - struct mux_connection *conn; - conn = malloc(sizeof(struct mux_connection)); - memset(conn, 0, sizeof(struct mux_connection)); - - conn->dev = dev; - conn->client = client; - conn->state = CONN_CONNECTING; - conn->sport = sport; - conn->dport = dport; - conn->tx_seq = 0; - conn->tx_ack = 0; - conn->tx_acked = 0; - conn->tx_win = 131072; - conn->rx_recvd = 0; - conn->flags = 0; - conn->max_payload = USB_MTU - sizeof(struct mux_header) - sizeof(struct tcphdr); - - conn->ob_buf = malloc(CONN_OUTBUF_SIZE); - conn->ob_capacity = CONN_OUTBUF_SIZE; - conn->ib_buf = malloc(CONN_INBUF_SIZE); - conn->ib_capacity = CONN_INBUF_SIZE; - conn->ib_size = 0; - - int res; - - res = send_tcp(conn, TH_SYN, NULL, 0); - if(res < 0) { - usbmuxd_log(LL_ERROR, "Error sending TCP SYN to device %d (%d->%d)", dev->id, sport, dport); - free(conn); - return -RESULT_CONNREFUSED; //bleh - } - collection_add(&dev->connections, conn); - return 0; -} - -static void update_connection(struct mux_connection *conn) -{ - uint32_t sent = conn->tx_seq - conn->rx_ack; - - if(conn->rx_win > sent) - conn->sendable = conn->rx_win - sent; - else - conn->sendable = 0; - - if(conn->sendable > conn->ob_capacity) - conn->sendable = conn->ob_capacity; - if(conn->sendable > conn->max_payload) - conn->sendable = conn->max_payload; - - if(conn->sendable > 0) - conn->events |= POLLIN; - else - conn->events &= ~POLLIN; - - if(conn->ib_size) - conn->events |= POLLOUT; - else - conn->events &= ~POLLOUT; - - if(conn->tx_acked != conn->tx_ack) - conn->flags |= CONN_ACK_PENDING; - else - conn->flags &= ~CONN_ACK_PENDING; - - usbmuxd_log(LL_SPEW, "update_connection: sendable %d, events %d, flags %d", conn->sendable, conn->events, conn->flags); - client_set_events(conn->client, conn->events); -} - -void device_client_process(int device_id, struct mux_client *client, short events) -{ - struct mux_connection *conn = NULL; - FOREACH(struct mux_device *dev, &device_list) { - if(dev->id == device_id) { - FOREACH(struct mux_connection *lconn, &dev->connections) { - if(lconn->client == client) { - conn = lconn; - break; - } - } ENDFOREACH - break; - } - } ENDFOREACH - - if(!conn) { - usbmuxd_log(LL_WARNING, "Could not find connection for device %d client %p", device_id, client); - return; - } - usbmuxd_log(LL_SPEW, "device_client_process (%d)", events); - - int res; - int size; - if(events & POLLOUT) { - size = client_write(conn->client, conn->ib_buf, conn->ib_size); - if(size <= 0) { - usbmuxd_log(LL_DEBUG, "error writing to client (%d)", size); - connection_teardown(conn); - return; - } - conn->tx_ack += size; - if(size == conn->ib_size) { - conn->ib_size = 0; - } else { - conn->ib_size -= size; - memmove(conn->ib_buf, conn->ib_buf + size, conn->ib_size); - } - } - if(events & POLLIN) { - size = client_read(conn->client, conn->ob_buf, conn->sendable); - if(size <= 0) { - usbmuxd_log(LL_DEBUG, "error reading from client (%d)", size); - connection_teardown(conn); - return; - } - res = send_tcp(conn, TH_ACK, conn->ob_buf, size); - if(res < 0) { - connection_teardown(conn); - return; - } - conn->tx_seq += size; - } - - update_connection(conn); -} - -static void connection_device_input(struct mux_connection *conn, unsigned char *payload, uint32_t payload_length) -{ - if((conn->ib_size + payload_length) > conn->ib_capacity) { - usbmuxd_log(LL_ERROR, "Input buffer overflow on device %d connection %d->%d (space=%d, payload=%d)", conn->dev->id, conn->sport, conn->dport, conn->ib_capacity-conn->ib_size, payload_length); - connection_teardown(conn); - return; - } - memcpy(conn->ib_buf + conn->ib_size, payload, payload_length); - conn->ib_size += payload_length; - conn->rx_recvd += payload_length; - update_connection(conn); -} - -void device_abort_connect(int device_id, struct mux_client *client) -{ - FOREACH(struct mux_device *dev, &device_list) { - if(dev->id == device_id) { - FOREACH(struct mux_connection *conn, &dev->connections) { - if(conn->client == client) { - connection_teardown(conn); - return; - } - } ENDFOREACH - usbmuxd_log(LL_WARNING, "Attempted to abort for nonexistent connection for device %d", device_id); - return; - } - } ENDFOREACH - usbmuxd_log(LL_WARNING, "Attempted to abort connection for nonexistent device %d", device_id); -} - -static void device_version_input(struct mux_device *dev, struct version_header *vh) -{ - if(dev->state != MUXDEV_INIT) { - usbmuxd_log(LL_WARNING, "Version packet from already initialized device %d", dev->id); - return; - } - vh->major = ntohl(vh->major); - vh->minor = ntohl(vh->minor); - if(vh->major != 1 || vh->minor != 0) { - usbmuxd_log(LL_ERROR, "Device %d has unknown version %d.%d\n", dev->id, vh->major, vh->minor); - collection_remove(&device_list, dev); - free(dev); - return; - } - usbmuxd_log(LL_NOTICE, "Connected to v%d.%d device %d on location 0x%x with serial number %s", vh->major, vh->minor, dev->id, usb_get_location(dev->usbdev), usb_get_serial(dev->usbdev)); - dev->state = MUXDEV_ACTIVE; - collection_init(&dev->connections); - struct device_info info; - info.id = dev->id; - info.location = usb_get_location(dev->usbdev); - info.serial = usb_get_serial(dev->usbdev); - info.pid = usb_get_pid(dev->usbdev); - client_device_add(&info); -} - -static void device_tcp_input(struct mux_device *dev, struct tcphdr *th, unsigned char *payload, uint32_t payload_length) -{ - uint16_t sport = ntohs(th->th_dport); - uint16_t dport = ntohs(th->th_sport); - struct mux_connection *conn = NULL; - - usbmuxd_log(LL_DEBUG, "[IN] dev=%d sport=%d dport=%d seq=%d ack=%d flags=0x%x window=%d[%d] len=%d", - dev->id, dport, sport, ntohl(th->th_seq), ntohl(th->th_ack), th->th_flags, ntohs(th->th_win) << 8, ntohs(th->th_win), payload_length); - - if(dev->state != MUXDEV_ACTIVE) { - usbmuxd_log(LL_ERROR, "Received TCP packet from device %d but the device isn't active yet, discarding\n", dev->id); - return; - } - - FOREACH(struct mux_connection *lconn, &dev->connections) { - if(lconn->sport == sport && lconn->dport == dport) { - conn = lconn; - break; - } - } ENDFOREACH - - if(!conn) { - usbmuxd_log(LL_INFO, "No connection for device %d incoming packet %d->%d", dev->id, dport, sport); - if(!(th->th_flags & TH_RST)) { - if(send_anon_rst(dev, sport, dport, ntohl(th->th_seq)) < 0) - usbmuxd_log(LL_ERROR, "Error sending TCP RST to device %d (%d->%d)", conn->dev->id, sport, dport); - } - return; - } - - conn->rx_seq = ntohl(th->th_seq); - conn->rx_ack = ntohl(th->th_ack); - conn->rx_win = ntohs(th->th_win) << 8; - - if(th->th_flags & TH_RST) { - char *buf = malloc(payload_length+1); - memcpy(buf, payload, payload_length); - if(payload_length && (buf[payload_length-1] == '\n')) - buf[payload_length-1] = 0; - buf[payload_length] = 0; - usbmuxd_log(LL_DEBUG, "RST reason: %s", buf); - free(buf); - } - - if(conn->state == CONN_CONNECTING) { - if(th->th_flags != (TH_SYN|TH_ACK)) { - if(th->th_flags & TH_RST) - conn->state = CONN_REFUSED; - usbmuxd_log(LL_INFO, "Connection refused by device %d (%d->%d)", dev->id, sport, dport); - connection_teardown(conn); //this also sends the notification to the client - } else { - conn->tx_seq++; - conn->tx_ack++; - conn->rx_recvd = conn->rx_seq; - if(send_tcp(conn, TH_ACK, NULL, 0) < 0) { - usbmuxd_log(LL_ERROR, "Error sending TCP ACK to device %d (%d->%d)", dev->id, sport, dport); - connection_teardown(conn); - return; - } - conn->state = CONN_CONNECTED; - if(client_notify_connect(conn->client, RESULT_OK) < 0) { - conn->client = NULL; - connection_teardown(conn); - } - update_connection(conn); - } - } else if(conn->state == CONN_CONNECTED) { - if(th->th_flags != TH_ACK) { - usbmuxd_log(LL_INFO, "Connection reset by device %d (%d->%d)", dev->id, sport, dport); - if(th->th_flags & TH_RST) - conn->state = CONN_DYING; - connection_teardown(conn); - } else { - connection_device_input(conn, payload, payload_length); - } - } -} - -void device_data_input(struct usb_device *usbdev, unsigned char *buffer, uint32_t length) -{ - struct mux_device *dev = NULL; - FOREACH(struct mux_device *tdev, &device_list) { - if(tdev->usbdev == usbdev) { - dev = tdev; - break; - } - } ENDFOREACH - if(!dev) { - usbmuxd_log(LL_WARNING, "Cannot find device entry for RX input from USB device %p on location 0x%x", usbdev, usb_get_location(usbdev)); - return; - } - - if(!length) - return; - - // sanity check (should never happen with current USB implementation) - if((length > USB_MRU) || (length > DEV_MRU)) { - usbmuxd_log(LL_ERROR, "Too much data received from USB (%d), file a bug", length); - return; - } - - usbmuxd_log(LL_SPEW, "Mux data input for device %p: %p len %d", dev, buffer, length); - - // handle broken up transfers - if(dev->pktlen) { - if((length + dev->pktlen) > DEV_MRU) { - usbmuxd_log(LL_ERROR, "Incoming split packet is too large (%d so far), dropping!", length + dev->pktlen); - dev->pktlen = 0; - return; - } - memcpy(dev->pktbuf + dev->pktlen, buffer, length); - struct mux_header *mhdr = (struct mux_header *)dev->pktbuf; - if((length < USB_MRU) || (ntohl(mhdr->length) == (length + dev->pktlen))) { - buffer = dev->pktbuf; - length += dev->pktlen; - dev->pktlen = 0; - usbmuxd_log(LL_SPEW, "Gathered mux data from buffer (total size: %d)", length); - } else { - dev->pktlen += length; - usbmuxd_log(LL_SPEW, "Appended mux data to buffer (total size: %d)", dev->pktlen); - return; - } - } else { - struct mux_header *mhdr = (struct mux_header *)buffer; - if((length == USB_MRU) && (length < ntohl(mhdr->length))) { - memcpy(dev->pktbuf, buffer, length); - dev->pktlen = length; - usbmuxd_log(LL_SPEW, "Copied mux data to buffer (size: %d)", dev->pktlen); - return; - } - } - - struct mux_header *mhdr = (struct mux_header *)buffer; - - if(ntohl(mhdr->length) != length) { - usbmuxd_log(LL_ERROR, "Incoming packet size mismatch (dev %d, expected %d, got %d)", dev->id, ntohl(mhdr->length), length); - return; - } - - struct tcphdr *th; - unsigned char *payload; - uint32_t payload_length; - - switch(ntohl(mhdr->protocol)) { - case MUX_PROTO_VERSION: - if(length < (sizeof(struct mux_header) + sizeof(struct version_header))) { - usbmuxd_log(LL_ERROR, "Incoming version packet is too small (%d)", length); - return; - } - device_version_input(dev, (struct version_header *)(mhdr+1)); - break; - case MUX_PROTO_TCP: - if(length < (sizeof(struct mux_header) + sizeof(struct tcphdr))) { - usbmuxd_log(LL_ERROR, "Incoming TCP packet is too small (%d)", length); - return; - } - th = (struct tcphdr *)(mhdr+1); - payload = (unsigned char *)(th+1); - payload_length = length - sizeof(struct tcphdr) - sizeof(struct mux_header); - device_tcp_input(dev, (struct tcphdr *)(mhdr+1), payload, payload_length); - break; - default: - usbmuxd_log(LL_ERROR, "Incoming packet for device %d has unknown protocol 0x%x)", dev->id, ntohl(mhdr->protocol)); - break; - } - -} - -int device_add(struct usb_device *usbdev) -{ - int res; - int id = get_next_device_id(); - struct mux_device *dev; - usbmuxd_log(LL_NOTICE, "Connecting to new device on location 0x%x as ID %d", usb_get_location(usbdev), id); - dev = malloc(sizeof(struct mux_device)); - dev->id = id; - dev->usbdev = usbdev; - dev->state = MUXDEV_INIT; - dev->next_sport = 1; - dev->pktbuf = malloc(DEV_MRU); - dev->pktlen = 0; - struct version_header vh; - vh.major = htonl(1); - vh.minor = htonl(0); - vh.padding = 0; - if((res = send_packet(dev, MUX_PROTO_VERSION, &vh, NULL, 0)) < 0) { - usbmuxd_log(LL_ERROR, "Error sending version request packet to device %d", id); - free(dev); - return res; - } - collection_add(&device_list, dev); - return 0; -} - -void device_remove(struct usb_device *usbdev) -{ - FOREACH(struct mux_device *dev, &device_list) { - if(dev->usbdev == usbdev) { - usbmuxd_log(LL_NOTICE, "Removed device %d on location 0x%x", dev->id, usb_get_location(usbdev)); - if(dev->state == MUXDEV_ACTIVE) { - dev->state = MUXDEV_DEAD; - FOREACH(struct mux_connection *conn, &dev->connections) { - connection_teardown(conn); - } ENDFOREACH - client_device_remove(dev->id); - collection_free(&dev->connections); - } - collection_remove(&device_list, dev); - free(dev->pktbuf); - free(dev); - return; - } - } ENDFOREACH - usbmuxd_log(LL_WARNING, "Cannot find device entry while removing USB device %p on location 0x%x", usbdev, usb_get_location(usbdev)); -} - -int device_get_count(void) -{ - int count = 0; - FOREACH(struct mux_device *dev, &device_list) { - if(dev->state == MUXDEV_ACTIVE) - count++; - } ENDFOREACH - return count; -} - -int device_get_list(struct device_info *p) -{ - int count = 0; - FOREACH(struct mux_device *dev, &device_list) { - if(dev->state == MUXDEV_ACTIVE) { - p->id = dev->id; - p->serial = usb_get_serial(dev->usbdev); - p->location = usb_get_location(dev->usbdev); - p->pid = usb_get_pid(dev->usbdev); - count++; - p++; - } - } ENDFOREACH - return count; -} - -int device_get_timeout(void) -{ - uint64_t oldest = (uint64_t)-1; - FOREACH(struct mux_device *dev, &device_list) { - if(dev->state == MUXDEV_ACTIVE) { - FOREACH(struct mux_connection *conn, &dev->connections) { - if((conn->state == CONN_CONNECTED) && (conn->flags & CONN_ACK_PENDING) && conn->last_ack_time < oldest) - oldest = conn->last_ack_time; - } ENDFOREACH - } - } ENDFOREACH - uint64_t ct = mstime64(); - if(oldest == -1) - return 100000; //meh - if((ct - oldest) > ACK_TIMEOUT) - return 0; - return ACK_TIMEOUT - (ct - oldest); -} - -void device_check_timeouts(void) -{ - uint64_t ct = mstime64(); - FOREACH(struct mux_device *dev, &device_list) { - if(dev->state == MUXDEV_ACTIVE) { - FOREACH(struct mux_connection *conn, &dev->connections) { - if((conn->state == CONN_CONNECTED) && - (conn->flags & CONN_ACK_PENDING) && - (ct - conn->last_ack_time) > ACK_TIMEOUT) { - usbmuxd_log(LL_DEBUG, "Sending ACK due to expired timeout (%" PRIu64 " -> %" PRIu64 ")", conn->last_ack_time, ct); - if(send_tcp(conn, TH_ACK, NULL, 0) < 0) { - usbmuxd_log(LL_ERROR, "Error sending TCP ACK to device %d (%d->%d)", dev->id, conn->sport, conn->dport); - connection_teardown(conn); - } - } - } ENDFOREACH - } - } ENDFOREACH -} - -void device_init(void) -{ - usbmuxd_log(LL_DEBUG, "device_init"); - collection_init(&device_list); - next_device_id = 1; -} - -void device_kill_connections(void) -{ - usbmuxd_log(LL_DEBUG, "device_kill_connections"); - FOREACH(struct mux_device *dev, &device_list) { - if(dev->state != MUXDEV_INIT) { - FOREACH(struct mux_connection *conn, &dev->connections) { - connection_teardown(conn); - } ENDFOREACH - } - } ENDFOREACH - // give USB a while to send the final connection RSTs and the like - usb_process_timeout(100); -} - -void device_shutdown(void) -{ - usbmuxd_log(LL_DEBUG, "device_shutdown"); - FOREACH(struct mux_device *dev, &device_list) { - FOREACH(struct mux_connection *conn, &dev->connections) { - connection_teardown(conn); - } ENDFOREACH - collection_free(&dev->connections); - collection_remove(&device_list, dev); - free(dev); - } ENDFOREACH - collection_free(&device_list); -} diff --git a/daemon/device.h b/daemon/device.h deleted file mode 100644 index ea77069..0000000 --- a/daemon/device.h +++ /dev/null @@ -1,52 +0,0 @@ -/* - usbmuxd - iPhone/iPod Touch USB multiplex server daemon - -Copyright (C) 2009 Hector Martin "marcan" - -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 or version 3. - -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 - -*/ - -#ifndef __DEVICE_H__ -#define __DEVICE_H__ - -#include "usb.h" -#include "client.h" - -struct device_info { - int id; - const char *serial; - uint32_t location; - uint16_t pid; -}; - -void device_data_input(struct usb_device *dev, unsigned char *buf, uint32_t length); - -int device_add(struct usb_device *dev); -void device_remove(struct usb_device *dev); - -int device_start_connect(int device_id, uint16_t port, struct mux_client *client); -void device_client_process(int device_id, struct mux_client *client, short events); -void device_abort_connect(int device_id, struct mux_client *client); - -int device_get_count(void); -int device_get_list(struct device_info *p); - -int device_get_timeout(void); -void device_check_timeouts(void); - -void device_init(void); -void device_kill_connections(void); -void device_shutdown(void); -#endif diff --git a/daemon/log.c b/daemon/log.c deleted file mode 100644 index 1973257..0000000 --- a/daemon/log.c +++ /dev/null @@ -1,95 +0,0 @@ -/* - usbmuxd - iPhone/iPod Touch USB multiplex server daemon - -Copyright (C) 2009 Hector Martin "marcan" -Copyright (C) 2009 Nikias Bassen - -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 or version 3. - -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 - -*/ - -#ifdef HAVE_CONFIG_H -#include -#endif - -#include -#include -#include -#include -#include -#include -#include - -#include "log.h" - -int log_level = LL_WARNING; - -int log_syslog = 0; - -void log_enable_syslog() -{ - if (!log_syslog) { - openlog("usbmuxd", LOG_PID, 0); - log_syslog = 1; - } -} - -void log_disable_syslog() -{ - if (log_syslog) { - closelog(); - } -} - -static int level_to_syslog_level(int level) -{ - int result = level + LOG_CRIT; - if (result > LOG_DEBUG) { - result = LOG_DEBUG; - } - return result; -} - -void usbmuxd_log(enum loglevel level, const char *fmt, ...) -{ - va_list ap; - char *fs; - struct timeval ts; - struct tm *tp; - - if(level > log_level) - return; - - gettimeofday(&ts, NULL); - tp = localtime(&ts.tv_sec); - - fs = malloc(20 + strlen(fmt)); - - if(log_syslog) { - sprintf(fs, "[%d] %s\n", level, fmt); - } else { - strftime(fs, 10, "[%H:%M:%S", tp); - sprintf(fs+9, ".%03d][%d] %s\n", (int)(ts.tv_usec / 1000), level, fmt); - } - - va_start(ap, fmt); - if (log_syslog) { - vsyslog(level_to_syslog_level(level), fs, ap); - } else { - vfprintf(stderr, fs, ap); - } - va_end(ap); - - free(fs); -} diff --git a/daemon/log.h b/daemon/log.h deleted file mode 100644 index eeefa41..0000000 --- a/daemon/log.h +++ /dev/null @@ -1,44 +0,0 @@ -/* - usbmuxd - iPhone/iPod Touch USB multiplex server daemon - -Copyright (C) 2009 Hector Martin "marcan" -Copyright (C) 2009 Nikias Bassen - -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 or version 3. - -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 - -*/ - -#ifndef __LOG_H__ -#define __LOG_H__ - -enum loglevel { - LL_FATAL = 0, - LL_ERROR, - LL_WARNING, - LL_NOTICE, - LL_INFO, - LL_DEBUG, - LL_SPEW, - LL_FLOOD, -}; - -extern int log_level; - -void log_enable_syslog(); -void log_disable_syslog(); - -void usbmuxd_log(enum loglevel level, const char *fmt, ...) __attribute__ ((format (printf, 2, 3))); - - -#endif diff --git a/daemon/main.c b/daemon/main.c deleted file mode 100644 index 140bee1..0000000 --- a/daemon/main.c +++ /dev/null @@ -1,618 +0,0 @@ -/* - usbmuxd - iPhone/iPod Touch USB multiplex server daemon - -Copyright (C) 2009 Hector Martin "marcan" -Copyright (C) 2009 Nikias Bassen -Copyright (C) 2009 Paul Sladen - -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 or version 3. - -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 - -*/ - -#define _BSD_SOURCE -#define _GNU_SOURCE - -#ifdef HAVE_CONFIG_H -#include -#endif - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "log.h" -#include "usb.h" -#include "device.h" -#include "client.h" - -static const char *socket_path = "/var/run/usbmuxd"; -static const char *lockfile = "/var/run/usbmuxd.pid"; - -int should_exit; -int should_discover; - -static int verbose = 0; -static int foreground = 0; -static int drop_privileges = 0; -static const char *drop_user = NULL; -static int opt_udev = 0; -static int opt_exit = 0; -static int exit_signal = 0; -static int daemon_pipe; - -static int report_to_parent = 0; - -int create_socket(void) { - struct sockaddr_un bind_addr; - int listenfd; - - if(unlink(socket_path) == -1 && errno != ENOENT) { - usbmuxd_log(LL_FATAL, "unlink(%s) failed: %s", socket_path, strerror(errno)); - return -1; - } - - listenfd = socket(AF_UNIX, SOCK_STREAM, 0); - if (listenfd == -1) { - usbmuxd_log(LL_FATAL, "socket() failed: %s", strerror(errno)); - return -1; - } - - bzero(&bind_addr, sizeof(bind_addr)); - bind_addr.sun_family = AF_UNIX; - strcpy(bind_addr.sun_path, socket_path); - if (bind(listenfd, (struct sockaddr*)&bind_addr, sizeof(bind_addr)) != 0) { - usbmuxd_log(LL_FATAL, "bind() failed: %s", strerror(errno)); - return -1; - } - - // Start listening - if (listen(listenfd, 5) != 0) { - usbmuxd_log(LL_FATAL, "listen() failed: %s", strerror(errno)); - return -1; - } - - chmod(socket_path, 0666); - - return listenfd; -} - -void handle_signal(int sig) -{ - if (sig != SIGUSR1 && sig != SIGUSR2) { - usbmuxd_log(LL_NOTICE,"Caught signal %d, exiting", sig); - should_exit = 1; - } else { - if(opt_udev) { - if (sig == SIGUSR1) { - usbmuxd_log(LL_INFO, "Caught SIGUSR1, checking if we can terminate (no more devices attached)..."); - if (device_get_count() > 0) { - // we can't quit, there are still devices attached. - usbmuxd_log(LL_NOTICE, "Refusing to terminate, there are still devices attached. Kill me with signal 15 (TERM) to force quit."); - } else { - // it's safe to quit - should_exit = 1; - } - } else if (sig == SIGUSR2) { - usbmuxd_log(LL_INFO, "Caught SIGUSR2, scheduling device discovery"); - should_discover = 1; - } - } else { - usbmuxd_log(LL_INFO, "Caught SIGUSR1/2 but we weren't started in --udev mode, ignoring"); - } - } -} - -void set_signal_handlers(void) -{ - struct sigaction sa; - sigset_t set; - - // Mask all signals we handle. They will be unmasked by ppoll(). - sigemptyset(&set); - sigaddset(&set, SIGINT); - sigaddset(&set, SIGQUIT); - sigaddset(&set, SIGTERM); - sigaddset(&set, SIGUSR1); - sigaddset(&set, SIGUSR2); - sigprocmask(SIG_SETMASK, &set, NULL); - - memset(&sa, 0, sizeof(struct sigaction)); - sa.sa_handler = handle_signal; - sigaction(SIGINT, &sa, NULL); - sigaction(SIGQUIT, &sa, NULL); - sigaction(SIGTERM, &sa, NULL); - sigaction(SIGUSR1, &sa, NULL); - sigaction(SIGUSR2, &sa, NULL); -} - -#if defined(__FreeBSD__) || defined(__APPLE__) -static int ppoll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout, const sigset_t *sigmask) -{ - int ready; - sigset_t origmask; - int to = timeout->tv_sec*1000 + timeout->tv_nsec/1000000; - - sigprocmask(SIG_SETMASK, sigmask, &origmask); - ready = poll(fds, nfds, to); - sigprocmask(SIG_SETMASK, &origmask, NULL); - - return ready; -} -#endif - -int main_loop(int listenfd) -{ - int to, cnt, i, dto; - struct fdlist pollfds; - struct timespec tspec; - - sigset_t empty_sigset; - sigemptyset(&empty_sigset); // unmask all signals - - fdlist_create(&pollfds); - while(!should_exit) { - usbmuxd_log(LL_FLOOD, "main_loop iteration"); - to = usb_get_timeout(); - usbmuxd_log(LL_FLOOD, "USB timeout is %d ms", to); - dto = device_get_timeout(); - usbmuxd_log(LL_FLOOD, "Device timeout is %d ms", to); - if(dto < to) - to = dto; - - fdlist_reset(&pollfds); - fdlist_add(&pollfds, FD_LISTEN, listenfd, POLLIN); - usb_get_fds(&pollfds); - client_get_fds(&pollfds); - usbmuxd_log(LL_FLOOD, "fd count is %d", pollfds.count); - - tspec.tv_sec = to / 1000; - tspec.tv_nsec = (to % 1000) * 1000000; - cnt = ppoll(pollfds.fds, pollfds.count, &tspec, &empty_sigset); - usbmuxd_log(LL_FLOOD, "poll() returned %d", cnt); - if(cnt == -1) { - if(errno == EINTR) { - if(should_exit) { - usbmuxd_log(LL_INFO, "Event processing interrupted"); - break; - } - if(should_discover) { - should_discover = 0; - usbmuxd_log(LL_INFO, "Device discovery triggered by udev"); - usb_discover(); - } - } - } else if(cnt == 0) { - if(usb_process() < 0) { - usbmuxd_log(LL_FATAL, "usb_process() failed"); - fdlist_free(&pollfds); - return -1; - } - device_check_timeouts(); - } else { - int done_usb = 0; - for(i=0; i 0) { - // exit parent process - int status; - close(pfd[1]); - - if((res = read(pfd[0],&status,sizeof(int))) != sizeof(int)) { - fprintf(stderr, "usbmuxd: ERROR: Failed to get init status from child, check syslog for messages.\n"); - exit(1); - } - if(status != 0) - fprintf(stderr, "usbmuxd: ERROR: Child process exited with error %d, check syslog for messages.\n", status); - exit(status); - } - // At this point we are executing as the child process - // but we need to do one more fork - - daemon_pipe = pfd[1]; - close(pfd[0]); - report_to_parent = 1; - - // Change the file mode mask - umask(0); - - // Create a new SID for the child process - sid = setsid(); - if (sid < 0) { - usbmuxd_log(LL_FATAL, "setsid() failed."); - return -1; - } - - pid = fork(); - if (pid < 0) { - usbmuxd_log(LL_FATAL, "fork() failed (second)."); - return pid; - } - - if (pid > 0) { - // exit parent process - close(daemon_pipe); - exit(0); - } - - // Change the current working directory. - if ((chdir("/")) < 0) { - usbmuxd_log(LL_FATAL, "chdir() failed"); - return -2; - } - // Redirect standard files to /dev/null - if (!freopen("/dev/null", "r", stdin)) { - usbmuxd_log(LL_FATAL, "Redirection of stdin failed."); - return -3; - } - if (!freopen("/dev/null", "w", stdout)) { - usbmuxd_log(LL_FATAL, "Redirection of stdout failed."); - return -3; - } - - return 0; -} - -static int notify_parent(int status) -{ - int res; - - report_to_parent = 0; - if ((res = write(daemon_pipe, &status, sizeof(int))) != sizeof(int)) { - usbmuxd_log(LL_FATAL, "Could not notify parent!"); - if(res >= 0) - return -2; - else - return res; - } - close(daemon_pipe); - if (!freopen("/dev/null", "w", stderr)) { - usbmuxd_log(LL_FATAL, "Redirection of stderr failed."); - return -1; - } - return 0; -} - -static void usage() -{ - printf("usage: usbmuxd [options]\n"); - printf("\t-h|--help Print this message.\n"); - printf("\t-v|--verbose Be verbose (use twice or more to increase).\n"); - printf("\t-f|--foreground Do not daemonize (implies one -v).\n"); - printf("\t-U|--user USER Change to this user after startup (needs usb privileges).\n"); - printf("\t-u|--udev Run in udev operation mode.\n"); - printf("\t-x|--exit Tell a running instance to exit if there are no devices\n"); - printf("\t connected (must be in udev mode).\n"); - printf("\t-X|--force-exit Tell a running instance to exit, even if there are still\n"); - printf("\t devices connected (always works).\n"); - printf("\n"); -} - -static void parse_opts(int argc, char **argv) -{ - static struct option longopts[] = { - {"help", 0, NULL, 'h'}, - {"foreground", 0, NULL, 'f'}, - {"verbose", 0, NULL, 'v'}, - {"user", 2, NULL, 'U'}, - {"udev", 0, NULL, 'u'}, - {"exit", 0, NULL, 'x'}, - {"force-exit", 0, NULL, 'X'}, - {NULL, 0, NULL, 0} - }; - int c; - - while (1) { - c = getopt_long(argc, argv, "hfvuU:xX", longopts, (int *) 0); - if (c == -1) { - break; - } - - switch (c) { - case 'h': - usage(); - exit(0); - case 'f': - foreground = 1; - break; - case 'v': - ++verbose; - break; - case 'U': - drop_privileges = 1; - drop_user = optarg; - break; - case 'u': - opt_udev = 1; - break; - case 'x': - opt_exit = 1; - exit_signal = SIGUSR1; - break; - case 'X': - opt_exit = 1; - exit_signal = SIGTERM; - break; - default: - usage(); - exit(2); - } - } -} - -int main(int argc, char *argv[]) -{ - int listenfd; - int res = 0; - int lfd; - struct flock lock; - char pids[10]; - - parse_opts(argc, argv); - - argc -= optind; - argv += optind; - - if (!foreground) { - verbose += LL_WARNING; - log_enable_syslog(); - } else { - verbose += LL_NOTICE; - } - - /* set log level to specified verbosity */ - log_level = verbose; - - usbmuxd_log(LL_NOTICE, "usbmuxd v%s starting up", USBMUXD_VERSION); - should_exit = 0; - should_discover = 0; - - set_signal_handlers(); - signal(SIGPIPE, SIG_IGN); - - res = lfd = open(lockfile, O_WRONLY|O_CREAT, 0644); - if(res == -1) { - usbmuxd_log(LL_FATAL, "Could not open lockfile"); - goto terminate; - } - lock.l_type = F_WRLCK; - lock.l_whence = SEEK_SET; - lock.l_start = 0; - lock.l_len = 0; - fcntl(lfd, F_GETLK, &lock); - close(lfd); - if (lock.l_type != F_UNLCK) { - if (opt_exit) { - if (lock.l_pid && !kill(lock.l_pid, 0)) { - usbmuxd_log(LL_NOTICE, "Sending signal %d to instance with pid %d", exit_signal, lock.l_pid); - res = 0; - if (kill(lock.l_pid, exit_signal) < 0) { - usbmuxd_log(LL_FATAL, "Could not deliver signal %d to pid %d", exit_signal, lock.l_pid); - res = -1; - } - goto terminate; - } else { - usbmuxd_log(LL_ERROR, "Could not determine pid of the other running instance!"); - res = -1; - goto terminate; - } - } else { - if (!opt_udev) { - usbmuxd_log(LL_ERROR, "Another instance is already running (pid %d). exiting.", lock.l_pid); - res = -1; - } else { - usbmuxd_log(LL_NOTICE, "Another instance is already running (pid %d). Telling it to check for devices.", lock.l_pid); - if (lock.l_pid && !kill(lock.l_pid, 0)) { - usbmuxd_log(LL_NOTICE, "Sending signal SIGUSR2 to instance with pid %d", lock.l_pid); - res = 0; - if (kill(lock.l_pid, SIGUSR2) < 0) { - usbmuxd_log(LL_FATAL, "Could not deliver SIGUSR2 to pid %d", lock.l_pid); - res = -1; - } - } else { - usbmuxd_log(LL_ERROR, "Could not determine pid of the other running instance!"); - res = -1; - } - } - goto terminate; - } - } - unlink(lockfile); - - if (opt_exit) { - usbmuxd_log(LL_NOTICE, "No running instance found, none killed. exiting."); - goto terminate; - } - - if (!foreground) { - if ((res = daemonize()) < 0) { - fprintf(stderr, "usbmuxd: FATAL: Could not daemonize!\n"); - usbmuxd_log(LL_FATAL, "Could not daemonize!"); - goto terminate; - } - } - - // now open the lockfile and place the lock - res = lfd = open(lockfile, O_WRONLY|O_CREAT|O_TRUNC|O_EXCL, 0644); - if(res < 0) { - usbmuxd_log(LL_FATAL, "Could not open lockfile"); - goto terminate; - } - lock.l_type = F_WRLCK; - lock.l_whence = SEEK_SET; - lock.l_start = 0; - lock.l_len = 0; - if ((res = fcntl(lfd, F_SETLK, &lock)) < 0) { - usbmuxd_log(LL_FATAL, "Lockfile locking failed!"); - goto terminate; - } - sprintf(pids, "%d", getpid()); - if ((res = write(lfd, pids, strlen(pids))) != strlen(pids)) { - usbmuxd_log(LL_FATAL, "Could not write pidfile!"); - if(res >= 0) - res = -2; - goto terminate; - } - - usbmuxd_log(LL_INFO, "Creating socket"); - res = listenfd = create_socket(); - if(listenfd < 0) - goto terminate; - - // drop elevated privileges - if (drop_privileges && (getuid() == 0 || geteuid() == 0)) { - struct passwd *pw; - if (!drop_user) { - usbmuxd_log(LL_FATAL, "No user to drop privileges to?"); - res = -1; - goto terminate; - } - pw = getpwnam(drop_user); - if (!pw) { - usbmuxd_log(LL_FATAL, "Dropping privileges failed, check if user '%s' exists!", drop_user); - res = -1; - goto terminate; - } - if (pw->pw_uid == 0) { - usbmuxd_log(LL_INFO, "Not dropping privileges to root"); - } else { - if ((res = initgroups(drop_user, pw->pw_gid)) < 0) { - usbmuxd_log(LL_FATAL, "Failed to drop privileges (cannot set supplementary groups)"); - goto terminate; - } - if ((res = setgid(pw->pw_gid)) < 0) { - usbmuxd_log(LL_FATAL, "Failed to drop privileges (cannot set group ID to %d)", pw->pw_gid); - goto terminate; - } - if ((res = setuid(pw->pw_uid)) < 0) { - usbmuxd_log(LL_FATAL, "Failed to drop privileges (cannot set user ID to %d)", pw->pw_uid); - goto terminate; - } - - // security check - if (setuid(0) != -1) { - usbmuxd_log(LL_FATAL, "Failed to drop privileges properly!"); - res = -1; - goto terminate; - } - if (getuid() != pw->pw_uid || getgid() != pw->pw_gid) { - usbmuxd_log(LL_FATAL, "Failed to drop privileges properly!"); - res = -1; - goto terminate; - } - usbmuxd_log(LL_NOTICE, "Successfully dropped privileges to '%s'", drop_user); - } - } - - client_init(); - device_init(); - usbmuxd_log(LL_INFO, "Initializing USB"); - if((res = usb_init()) < 0) - goto terminate; - - usbmuxd_log(LL_INFO, "%d device%s detected", res, (res==1)?"":"s"); - - usbmuxd_log(LL_NOTICE, "Initialization complete"); - - if (report_to_parent) - if((res = notify_parent(0)) < 0) - goto terminate; - - if(opt_udev) - usb_autodiscover(0); // discovery triggered by udev - - res = main_loop(listenfd); - if(res < 0) - usbmuxd_log(LL_FATAL, "main_loop failed"); - - usbmuxd_log(LL_NOTICE, "usbmuxd shutting down"); - device_kill_connections(); - usb_shutdown(); - device_shutdown(); - client_shutdown(); - usbmuxd_log(LL_NOTICE, "Shutdown complete"); - -terminate: - log_disable_syslog(); - - if (res < 0) - res = -res; - else - res = 0; - if (report_to_parent) - notify_parent(res); - - return res; -} diff --git a/daemon/usb-linux.c b/daemon/usb-linux.c deleted file mode 100644 index 334d967..0000000 --- a/daemon/usb-linux.c +++ /dev/null @@ -1,598 +0,0 @@ -/* - usbmuxd - iPhone/iPod Touch USB multiplex server daemon - -Copyright (C) 2009 Hector Martin "marcan" -Copyright (C) 2009 Nikias Bassen -Copyright (C) 2009 Martin Szulecki - -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 or version 3. - -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 - -*/ - -#ifdef HAVE_CONFIG_H -#include -#endif - -#include -#include -#include -#include - -#include - -#include "usb.h" -#include "log.h" -#include "device.h" - -// interval for device connection/disconnection polling, in milliseconds -// we need this because there is currently no asynchronous device discovery mechanism in libusb -#define DEVICE_POLL_TIME 1000 - -struct usb_device { - libusb_device_handle *dev; - uint8_t bus, address; - uint16_t vid, pid; - char serial[256]; - int alive; - uint8_t interface, ep_in, ep_out; - struct libusb_transfer *rx_xfer; - struct collection tx_xfers; - int wMaxPacketSize; -}; - -static struct collection device_list; - -static struct timeval next_dev_poll_time; - -static int devlist_failures; -static int device_polling; - -static void usb_disconnect(struct usb_device *dev) -{ - if(!dev->dev) { - return; - } - - // kill the rx xfer and tx xfers and try to make sure the callbacks get called before we free the device - if(dev->rx_xfer) { - usbmuxd_log(LL_DEBUG, "usb_disconnect: cancelling RX xfer"); - libusb_cancel_transfer(dev->rx_xfer); - } - FOREACH(struct libusb_transfer *xfer, &dev->tx_xfers) { - usbmuxd_log(LL_DEBUG, "usb_disconnect: cancelling TX xfer %p", xfer); - libusb_cancel_transfer(xfer); - } ENDFOREACH - - while(dev->rx_xfer || collection_count(&dev->tx_xfers)) { - struct timeval tv; - int res; - - tv.tv_sec = 0; - tv.tv_usec = 1000; - if((res = libusb_handle_events_timeout(NULL, &tv)) < 0) { - usbmuxd_log(LL_ERROR, "libusb_handle_events_timeout for usb_disconnect failed: %d", res); - break; - } - } - collection_free(&dev->tx_xfers); - libusb_release_interface(dev->dev, dev->interface); - libusb_close(dev->dev); - dev->dev = NULL; - collection_remove(&device_list, dev); - free(dev); -} - -static void tx_callback(struct libusb_transfer *xfer) -{ - struct usb_device *dev = xfer->user_data; - usbmuxd_log(LL_SPEW, "TX callback dev %d-%d len %d -> %d status %d", dev->bus, dev->address, xfer->length, xfer->actual_length, xfer->status); - if(xfer->status != LIBUSB_TRANSFER_COMPLETED) { - switch(xfer->status) { - case LIBUSB_TRANSFER_COMPLETED: //shut up compiler - case LIBUSB_TRANSFER_ERROR: - // funny, this happens when we disconnect the device while waiting for a transfer, sometimes - usbmuxd_log(LL_INFO, "Device %d-%d TX aborted due to error or disconnect", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_TIMED_OUT: - usbmuxd_log(LL_ERROR, "TX transfer timed out for device %d-%d", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_CANCELLED: - usbmuxd_log(LL_DEBUG, "Device %d-%d TX transfer cancelled", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_STALL: - usbmuxd_log(LL_ERROR, "TX transfer stalled for device %d-%d", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_NO_DEVICE: - // other times, this happens, and also even when we abort the transfer after device removal - usbmuxd_log(LL_INFO, "Device %d-%d TX aborted due to disconnect", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_OVERFLOW: - usbmuxd_log(LL_ERROR, "TX transfer overflow for device %d-%d", dev->bus, dev->address); - break; - // and nothing happens (this never gets called) if the device is freed after a disconnect! (bad) - } - // we can't usb_disconnect here due to a deadlock, so instead mark it as dead and reap it after processing events - // we'll do device_remove there too - dev->alive = 0; - } - if(xfer->buffer) - free(xfer->buffer); - collection_remove(&dev->tx_xfers, xfer); - libusb_free_transfer(xfer); -} - -int usb_send(struct usb_device *dev, const unsigned char *buf, int length) -{ - int res; - struct libusb_transfer *xfer = libusb_alloc_transfer(0); - libusb_fill_bulk_transfer(xfer, dev->dev, dev->ep_out, (void*)buf, length, tx_callback, dev, 0); - if((res = libusb_submit_transfer(xfer)) < 0) { - usbmuxd_log(LL_ERROR, "Failed to submit TX transfer %p len %d to device %d-%d: %d", buf, length, dev->bus, dev->address, res); - libusb_free_transfer(xfer); - return res; - } - collection_add(&dev->tx_xfers, xfer); - if (length % dev->wMaxPacketSize == 0) { - usbmuxd_log(LL_DEBUG, "Send ZLP"); - // Send Zero Length Packet - xfer = libusb_alloc_transfer(0); - void *buffer = malloc(1); - libusb_fill_bulk_transfer(xfer, dev->dev, dev->ep_out, buffer, 0, tx_callback, dev, 0); - if((res = libusb_submit_transfer(xfer)) < 0) { - usbmuxd_log(LL_ERROR, "Failed to submit TX ZLP transfer to device %d-%d: %d", dev->bus, dev->address, res); - libusb_free_transfer(xfer); - return res; - } - collection_add(&dev->tx_xfers, xfer); - } - return 0; -} - -static void rx_callback(struct libusb_transfer *xfer) -{ - struct usb_device *dev = xfer->user_data; - usbmuxd_log(LL_SPEW, "RX callback dev %d-%d len %d status %d", dev->bus, dev->address, xfer->actual_length, xfer->status); - if(xfer->status == LIBUSB_TRANSFER_COMPLETED) { - device_data_input(dev, xfer->buffer, xfer->actual_length); - libusb_submit_transfer(xfer); - } else { - switch(xfer->status) { - case LIBUSB_TRANSFER_COMPLETED: //shut up compiler - case LIBUSB_TRANSFER_ERROR: - // funny, this happens when we disconnect the device while waiting for a transfer, sometimes - usbmuxd_log(LL_INFO, "Device %d-%d RX aborted due to error or disconnect", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_TIMED_OUT: - usbmuxd_log(LL_ERROR, "RX transfer timed out for device %d-%d", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_CANCELLED: - usbmuxd_log(LL_DEBUG, "Device %d-%d RX transfer cancelled", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_STALL: - usbmuxd_log(LL_ERROR, "RX transfer stalled for device %d-%d", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_NO_DEVICE: - // other times, this happens, and also even when we abort the transfer after device removal - usbmuxd_log(LL_INFO, "Device %d-%d RX aborted due to disconnect", dev->bus, dev->address); - break; - case LIBUSB_TRANSFER_OVERFLOW: - usbmuxd_log(LL_ERROR, "RX transfer overflow for device %d-%d", dev->bus, dev->address); - break; - // and nothing happens (this never gets called) if the device is freed after a disconnect! (bad) - } - free(xfer->buffer); - dev->rx_xfer = NULL; - libusb_free_transfer(xfer); - // we can't usb_disconnect here due to a deadlock, so instead mark it as dead and reap it after processing events - // we'll do device_remove there too - dev->alive = 0; - } -} - -static int start_rx(struct usb_device *dev) -{ - int res; - void *buf; - dev->rx_xfer = libusb_alloc_transfer(0); - buf = malloc(USB_MRU); - libusb_fill_bulk_transfer(dev->rx_xfer, dev->dev, dev->ep_in, buf, USB_MRU, rx_callback, dev, 0); - if((res = libusb_submit_transfer(dev->rx_xfer)) != 0) { - usbmuxd_log(LL_ERROR, "Failed to submit RX transfer to device %d-%d: %d", dev->bus, dev->address, res); - libusb_free_transfer(dev->rx_xfer); - dev->rx_xfer = NULL; - return res; - } - return 0; -} - -int usb_discover(void) -{ - int cnt, i, j, res; - int valid_count = 0; - libusb_device **devs; - - cnt = libusb_get_device_list(NULL, &devs); - if(cnt < 0) { - usbmuxd_log(LL_WARNING, "Could not get device list: %d", cnt); - devlist_failures++; - // sometimes libusb fails getting the device list if you've just removed something - if(devlist_failures > 5) { - usbmuxd_log(LL_FATAL, "Too many errors getting device list\n"); - return cnt; - } else { - gettimeofday(&next_dev_poll_time, NULL); - next_dev_poll_time.tv_usec += DEVICE_POLL_TIME * 1000; - next_dev_poll_time.tv_sec += next_dev_poll_time.tv_usec / 1000000; - next_dev_poll_time.tv_usec = next_dev_poll_time.tv_usec % 1000000; - return 0; - } - } - devlist_failures = 0; - - usbmuxd_log(LL_SPEW, "usb_discover: scanning %d devices", cnt); - - FOREACH(struct usb_device *usbdev, &device_list) { - usbdev->alive = 0; - } ENDFOREACH - - for(i=0; ibus == bus && usbdev->address == address) { - valid_count++; - usbdev->alive = 1; - found = 1; - break; - } - } ENDFOREACH - if(found) - continue; //device already found - if((res = libusb_get_device_descriptor(dev, &devdesc)) != 0) { - usbmuxd_log(LL_WARNING, "Could not get device descriptor for device %d-%d: %d", bus, address, res); - continue; - } - if(devdesc.idVendor != VID_APPLE) - continue; - if((devdesc.idProduct < PID_RANGE_LOW) || - (devdesc.idProduct > PID_RANGE_MAX)) - continue; - libusb_device_handle *handle; - usbmuxd_log(LL_INFO, "Found new device with v/p %04x:%04x at %d-%d", devdesc.idVendor, devdesc.idProduct, bus, address); - // potentially blocking operations follow; they will only run when new devices are detected, which is acceptable - if((res = libusb_open(dev, &handle)) != 0) { - usbmuxd_log(LL_WARNING, "Could not open device %d-%d: %d", bus, address, res); - continue; - } - int current_config = 0; - if((res = libusb_get_configuration(handle, ¤t_config)) != 0) { - usbmuxd_log(LL_WARNING, "Could not get configuration for device %d-%d: %d", bus, address, res); - libusb_close(handle); - continue; - } - if (current_config != devdesc.bNumConfigurations) { - struct libusb_config_descriptor *config; - if((res = libusb_get_active_config_descriptor(dev, &config)) != 0) { - usbmuxd_log(LL_NOTICE, "Could not get old configuration descriptor for device %d-%d: %d", bus, address, res); - } else { - for(j=0; jbNumInterfaces; j++) { - const struct libusb_interface_descriptor *intf = &config->interface[j].altsetting[0]; - if((res = libusb_kernel_driver_active(handle, intf->bInterfaceNumber)) < 0) { - usbmuxd_log(LL_NOTICE, "Could not check kernel ownership of interface %d for device %d-%d: %d", intf->bInterfaceNumber, bus, address, res); - continue; - } - if(res == 1) { - usbmuxd_log(LL_INFO, "Detaching kernel driver for device %d-%d, interface %d", bus, address, intf->bInterfaceNumber); - if((res = libusb_detach_kernel_driver(handle, intf->bInterfaceNumber)) < 0) { - usbmuxd_log(LL_WARNING, "Could not detach kernel driver (%d), configuration change will probably fail!", res); - continue; - } - } - } - libusb_free_config_descriptor(config); - } - if((res = libusb_set_configuration(handle, devdesc.bNumConfigurations)) != 0) { - usbmuxd_log(LL_WARNING, "Could not set configuration %d for device %d-%d: %d", devdesc.bNumConfigurations, bus, address, res); - libusb_close(handle); - continue; - } - } - - struct libusb_config_descriptor *config; - if((res = libusb_get_active_config_descriptor(dev, &config)) != 0) { - usbmuxd_log(LL_WARNING, "Could not get configuration descriptor for device %d-%d: %d", bus, address, res); - libusb_close(handle); - continue; - } - - struct usb_device *usbdev; - usbdev = malloc(sizeof(struct usb_device)); - memset(usbdev, 0, sizeof(*usbdev)); - - for(j=0; jbNumInterfaces; j++) { - const struct libusb_interface_descriptor *intf = &config->interface[j].altsetting[0]; - if(intf->bInterfaceClass != INTERFACE_CLASS || - intf->bInterfaceSubClass != INTERFACE_SUBCLASS || - intf->bInterfaceProtocol != INTERFACE_PROTOCOL) - continue; - if(intf->bNumEndpoints != 2) { - usbmuxd_log(LL_WARNING, "Endpoint count mismatch for interface %d of device %d-%d", intf->bInterfaceNumber, bus, address); - continue; - } - if((intf->endpoint[0].bEndpointAddress & 0x80) == LIBUSB_ENDPOINT_OUT && - (intf->endpoint[1].bEndpointAddress & 0x80) == LIBUSB_ENDPOINT_IN) { - usbdev->interface = intf->bInterfaceNumber; - usbdev->ep_out = intf->endpoint[0].bEndpointAddress; - usbdev->ep_in = intf->endpoint[1].bEndpointAddress; - usbmuxd_log(LL_INFO, "Found interface %d with endpoints %02x/%02x for device %d-%d", usbdev->interface, usbdev->ep_out, usbdev->ep_in, bus, address); - break; - } else if((intf->endpoint[1].bEndpointAddress & 0x80) == LIBUSB_ENDPOINT_OUT && - (intf->endpoint[0].bEndpointAddress & 0x80) == LIBUSB_ENDPOINT_IN) { - usbdev->interface = intf->bInterfaceNumber; - usbdev->ep_out = intf->endpoint[1].bEndpointAddress; - usbdev->ep_in = intf->endpoint[0].bEndpointAddress; - usbmuxd_log(LL_INFO, "Found interface %d with swapped endpoints %02x/%02x for device %d-%d", usbdev->interface, usbdev->ep_out, usbdev->ep_in, bus, address); - break; - } else { - usbmuxd_log(LL_WARNING, "Endpoint type mismatch for interface %d of device %d-%d", intf->bInterfaceNumber, bus, address); - } - } - - if(j == config->bNumInterfaces) { - usbmuxd_log(LL_WARNING, "Could not find a suitable USB interface for device %d-%d", bus, address); - libusb_free_config_descriptor(config); - libusb_close(handle); - free(usbdev); - continue; - } - - libusb_free_config_descriptor(config); - - if((res = libusb_claim_interface(handle, usbdev->interface)) != 0) { - usbmuxd_log(LL_WARNING, "Could not claim interface %d for device %d-%d: %d", usbdev->interface, bus, address, res); - libusb_close(handle); - free(usbdev); - continue; - } - - if((res = libusb_get_string_descriptor_ascii(handle, devdesc.iSerialNumber, (uint8_t *)usbdev->serial, 256)) <= 0) { - usbmuxd_log(LL_WARNING, "Could not get serial number for device %d-%d: %d", bus, address, res); - libusb_release_interface(handle, usbdev->interface); - libusb_close(handle); - free(usbdev); - continue; - } - usbdev->serial[res] = 0; - usbdev->bus = bus; - usbdev->address = address; - usbdev->vid = devdesc.idVendor; - usbdev->pid = devdesc.idProduct; - usbdev->dev = handle; - usbdev->alive = 1; - usbdev->wMaxPacketSize = libusb_get_max_packet_size(dev, usbdev->ep_out); - if (usbdev->wMaxPacketSize <= 0) { - usbmuxd_log(LL_ERROR, "Could not determine wMaxPacketSize for device %d-%d, setting to 64", usbdev->bus, usbdev->address); - usbdev->wMaxPacketSize = 64; - } else { - usbmuxd_log(LL_INFO, "Using wMaxPacketSize=%d for device %d-%d", usbdev->wMaxPacketSize, usbdev->bus, usbdev->address); - } - - collection_init(&usbdev->tx_xfers); - - collection_add(&device_list, usbdev); - - if(device_add(usbdev) < 0) { - usb_disconnect(usbdev); - continue; - } - if(start_rx(usbdev) < 0) { - device_remove(usbdev); - usb_disconnect(usbdev); - continue; - } - valid_count++; - } - FOREACH(struct usb_device *usbdev, &device_list) { - if(!usbdev->alive) { - device_remove(usbdev); - usb_disconnect(usbdev); - } - } ENDFOREACH - - libusb_free_device_list(devs, 1); - - gettimeofday(&next_dev_poll_time, NULL); - next_dev_poll_time.tv_usec += DEVICE_POLL_TIME * 1000; - next_dev_poll_time.tv_sec += next_dev_poll_time.tv_usec / 1000000; - next_dev_poll_time.tv_usec = next_dev_poll_time.tv_usec % 1000000; - - return valid_count; -} - -const char *usb_get_serial(struct usb_device *dev) -{ - if(!dev->dev) { - return NULL; - } - return dev->serial; -} - -uint32_t usb_get_location(struct usb_device *dev) -{ - if(!dev->dev) { - return 0; - } - return (dev->bus << 16) | dev->address; -} - -uint16_t usb_get_pid(struct usb_device *dev) -{ - if(!dev->dev) { - return 0; - } - return dev->pid; -} - -void usb_get_fds(struct fdlist *list) -{ - const struct libusb_pollfd **usbfds; - const struct libusb_pollfd **p; - usbfds = libusb_get_pollfds(NULL); - if(!usbfds) { - usbmuxd_log(LL_ERROR, "libusb_get_pollfds failed"); - return; - } - p = usbfds; - while(*p) { - fdlist_add(list, FD_USB, (*p)->fd, (*p)->events); - p++; - } - free(usbfds); -} - -void usb_autodiscover(int enable) -{ - usbmuxd_log(LL_DEBUG, "usb polling enable: %d", enable); - device_polling = enable; -} - -static int dev_poll_remain_ms(void) -{ - int msecs; - struct timeval tv; - if(!device_polling) - return 100000; // devices will never be polled if this is > 0 - gettimeofday(&tv, NULL); - msecs = (next_dev_poll_time.tv_sec - tv.tv_sec) * 1000; - msecs += (next_dev_poll_time.tv_usec - tv.tv_usec) / 1000; - if(msecs < 0) - return 0; - return msecs; -} - -int usb_get_timeout(void) -{ - struct timeval tv; - int msec; - int res; - int pollrem; - pollrem = dev_poll_remain_ms(); - res = libusb_get_next_timeout(NULL, &tv); - if(res == 0) - return pollrem; - if(res < 0) { - usbmuxd_log(LL_ERROR, "libusb_get_next_timeout failed: %d", res); - return pollrem; - } - msec = tv.tv_sec * 1000; - msec += tv.tv_usec / 1000; - if(msec > pollrem) - return pollrem; - return msec; -} - -int usb_process(void) -{ - int res; - struct timeval tv; - tv.tv_sec = tv.tv_usec = 0; - res = libusb_handle_events_timeout(NULL, &tv); - if(res < 0) { - usbmuxd_log(LL_ERROR, "libusb_handle_events_timeout failed: %d", res); - return res; - } - // reap devices marked dead due to an RX error - FOREACH(struct usb_device *usbdev, &device_list) { - if(!usbdev->alive) { - device_remove(usbdev); - usb_disconnect(usbdev); - } - } ENDFOREACH - - if(dev_poll_remain_ms() <= 0) { - res = usb_discover(); - if(res < 0) { - usbmuxd_log(LL_ERROR, "usb_discover failed: %d", res); - return res; - } - } - return 0; -} - -int usb_process_timeout(int msec) -{ - int res; - struct timeval tleft, tcur, tfin; - gettimeofday(&tcur, NULL); - tfin.tv_sec = tcur.tv_sec + (msec / 1000); - tfin.tv_usec = tcur.tv_usec + (msec % 1000) * 1000; - tfin.tv_sec += tfin.tv_usec / 1000000; - tfin.tv_usec %= 1000000; - while((tfin.tv_sec > tcur.tv_sec) || ((tfin.tv_sec == tcur.tv_sec) && (tfin.tv_usec > tcur.tv_usec))) { - tleft.tv_sec = tfin.tv_sec - tcur.tv_sec; - tleft.tv_usec = tfin.tv_usec - tcur.tv_usec; - if(tleft.tv_usec < 0) { - tleft.tv_usec += 1000000; - tleft.tv_sec -= 1; - } - res = libusb_handle_events_timeout(NULL, &tleft); - if(res < 0) { - usbmuxd_log(LL_ERROR, "libusb_handle_events_timeout failed: %d", res); - return res; - } - // reap devices marked dead due to an RX error - FOREACH(struct usb_device *usbdev, &device_list) { - if(!usbdev->alive) { - device_remove(usbdev); - usb_disconnect(usbdev); - } - } ENDFOREACH - gettimeofday(&tcur, NULL); - } - return 0; -} - -int usb_init(void) -{ - int res; - usbmuxd_log(LL_DEBUG, "usb_init for linux / libusb 1.0"); - - devlist_failures = 0; - device_polling = 1; - res = libusb_init(NULL); - //libusb_set_debug(NULL, 3); - if(res != 0) { - usbmuxd_log(LL_FATAL, "libusb_init failed: %d", res); - return -1; - } - - collection_init(&device_list); - - return usb_discover(); -} - -void usb_shutdown(void) -{ - usbmuxd_log(LL_DEBUG, "usb_shutdown"); - FOREACH(struct usb_device *usbdev, &device_list) { - device_remove(usbdev); - usb_disconnect(usbdev); - } ENDFOREACH - collection_free(&device_list); - libusb_exit(NULL); -} diff --git a/daemon/usb.h b/daemon/usb.h deleted file mode 100644 index 6fe7ee6..0000000 --- a/daemon/usb.h +++ /dev/null @@ -1,66 +0,0 @@ -/* - usbmuxd - iPhone/iPod Touch USB multiplex server daemon - -Copyright (C) 2009 Hector Martin "marcan" -Copyright (C) 2009 Nikias Bassen -Copyright (C) 2009 Martin Szulecki - -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 or version 3. - -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 - -*/ - -#ifndef __USB_H__ -#define __USB_H__ - -#include -#include "utils.h" - -#define INTERFACE_CLASS 255 -#define INTERFACE_SUBCLASS 254 -#define INTERFACE_PROTOCOL 2 - -// libusb fragments packets larger than this (usbfs limitation) -// on input, this creates race conditions and other issues -#define USB_MRU 16384 - -// max transmission packet size -// libusb fragments these too, but doesn't send ZLPs so we're safe -// but we need to send a ZLP ourselves at the end (see usb-linux.c) -// we're using 3 * 16384 to optimize for the fragmentation -// this results in three URBs per full transfer, 32 USB packets each -// if there are ZLP issues this should make them show up easily too -#define USB_MTU (3 * 16384) - -#define USB_PACKET_SIZE 512 - -#define VID_APPLE 0x5ac -#define PID_RANGE_LOW 0x1290 -#define PID_RANGE_MAX 0x12af - -struct usb_device; - -int usb_init(void); -void usb_shutdown(void); -const char *usb_get_serial(struct usb_device *dev); -uint32_t usb_get_location(struct usb_device *dev); -uint16_t usb_get_pid(struct usb_device *dev); -void usb_get_fds(struct fdlist *list); -int usb_get_timeout(void); -int usb_send(struct usb_device *dev, const unsigned char *buf, int length); -int usb_discover(void); -void usb_autodiscover(int enable); -int usb_process(void); -int usb_process_timeout(int msec); - -#endif -- cgit v1.1-32-gdbae