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-rw-r--r--daemon/CMakeLists.txt32
-rw-r--r--daemon/client.c430
-rw-r--r--daemon/client.h46
-rw-r--r--daemon/device.c751
-rw-r--r--daemon/device.h52
-rw-r--r--daemon/log.c94
-rw-r--r--daemon/log.h43
-rw-r--r--daemon/main.c548
-rw-r--r--daemon/usb-linux.c542
-rw-r--r--daemon/usb.h66
10 files changed, 2604 insertions, 0 deletions
diff --git a/daemon/CMakeLists.txt b/daemon/CMakeLists.txt
new file mode 100644
index 0000000..45565d1
--- /dev/null
+++ b/daemon/CMakeLists.txt
@@ -0,0 +1,32 @@
+find_package(USB REQUIRED)
+include_directories(${USB_INCLUDE_DIRS})
+set(LIBS ${LIBS} ${USB_LIBRARIES})
+
+include_directories (${CMAKE_SOURCE_DIR}/common)
+include_directories (${CMAKE_SOURCE_DIR}/daemon)
+include_directories (${CMAKE_SOURCE_DIR}/libusbmuxd)
+
+include(CheckConstantExists)
+set(CMAKE_REQUIRED_INCLUDES ${USB_INCLUDE_DIRS})
+check_constant_exists(LIBUSB_TRANSFER_ZERO_PACKET libusb.h HAVE_LIBUSB_ZLP)
+
+if(NOT HAVE_LIBUSB_ZLP)
+ message("
+================================================================================
+==================================== WARNING ===================================
+================================================================================
+Your libusb is missing proper Zero Length Packet support! If you are using a
+recent libusb Git, things may or may not work. If you are using libusb 1.0.2 or
+earlier, things will definitely not work properly.
+
+Please apply the patch in the contrib/ directory to your libusb 1.0 tree.
+================================================================================
+")
+ add_definitions(-DEXPLICIT_ZLP_TRANSACTION)
+endif(NOT HAVE_LIBUSB_ZLP)
+
+add_definitions(-Wall -O2 -g -DUSBMUXD_DAEMON)
+add_executable(usbmuxd main.c usb-linux.c log.c ../common/utils.c device.c client.c)
+target_link_libraries(usbmuxd ${LIBS})
+
+install(TARGETS usbmuxd RUNTIME DESTINATION sbin)
diff --git a/daemon/client.c b/daemon/client.c
new file mode 100644
index 0000000..0e47e84
--- /dev/null
+++ b/daemon/client.c
@@ -0,0 +1,430 @@
+/*
+ usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <arpa/inet.h>
+
+#include "log.h"
+#include "usb.h"
+#include "client.h"
+#include "device.h"
+
+#define CMD_BUF_SIZE 256
+#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;
+ int ob_size;
+ int ob_capacity;
+ unsigned char *ib_buf;
+ int ib_size;
+ int ib_capacity;
+ short events, devents;
+ uint32_t connect_tag;
+ int connect_device;
+ enum client_state state;
+};
+
+static struct collection client_list;
+
+int client_read(struct mux_client *client, void *buffer, int 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, int 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 = USBMUXD_PROTOCOL_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)
+{
+ return send_pkt(client, tag, MESSAGE_RESULT, &result, sizeof(uint32_t));
+}
+
+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(struct mux_client *client, struct device_info *dev)
+{
+ 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;
+ return send_pkt(client, 0, MESSAGE_DEVICE_ADD, &dmsg, sizeof(dmsg));
+}
+
+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; i<count; i++) {
+ if(notify_device(client, dev++) < 0) {
+ free(devs);
+ return -1;
+ }
+ }
+ free(devs);
+ return count;
+}
+
+static int client_command(struct mux_client *client, struct usbmuxd_header *hdr, const char *payload)
+{
+ int res;
+ usbmuxd_log(LL_DEBUG, "Client command in fd %d len %d ver %d msg %d tag %d", client->fd, 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;
+ switch(hdr->message) {
+ 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*)payload;
+ 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;
+ 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);
+ client_close(client);
+ }
+ 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);
+ }
+ 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);
+ }
+ 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, (char *)(hdr+1));
+ 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_ERROR, "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(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)
+ send_pkt(client, 0, MESSAGE_DEVICE_REMOVE, &id, sizeof(uint32_t));
+ } 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
new file mode 100644
index 0000000..4fc1ab4
--- /dev/null
+++ b/daemon/client.h
@@ -0,0 +1,46 @@
+/*
+ usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+#ifndef __CLIENT_H__
+#define __CLIENT_H__
+
+#include <stdint.h>
+#include "usbmuxd-proto.h"
+
+struct device_info;
+struct mux_client;
+
+int client_read(struct mux_client *client, void *buffer, int len);
+int client_write(struct mux_client *client, void *buffer, int 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
new file mode 100644
index 0000000..3a5883c
--- /dev/null
+++ b/daemon/device.c
@@ -0,0 +1,751 @@
+/*
+ usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+#define _BSD_SOURCE
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/time.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include "device.h"
+#include "client.h"
+#include "usb.h"
+#include "log.h"
+
+int next_device_id;
+
+#define DEV_PKTBUF_SIZE 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;
+ int max_payload;
+ int sendable;
+ int flags;
+ unsigned char *ib_buf;
+ int ib_size;
+ int ib_capacity;
+ unsigned char *ob_buf;
+ int 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;
+ int 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)
+{
+ conn->sendable = conn->rx_win - (conn->tx_seq - conn->rx_ack);
+
+ 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, int 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, int payload_length)
+{
+ 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, ntohs(th->th_sport), ntohs(th->th_dport), ntohl(th->th_seq), ntohl(th->th_ack), th->th_flags, ntohs(th->th_win) << 8, ntohs(th->th_win), payload_length);
+
+ uint16_t sport = ntohs(th->th_dport);
+ uint16_t dport = ntohs(th->th_sport);
+ struct mux_connection *conn = NULL;
+ FOREACH(struct mux_connection *lconn, &dev->connections) {
+ if(lconn->sport == sport && lconn->dport == dport) {
+ conn = lconn;
+ break;
+ }
+ } ENDFOREACH
+
+ if(!conn) {
+ usbmuxd_log(LL_WARNING, "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, int 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;
+
+ usbmuxd_log(LL_SPEW, "Mux data input for device %p: %p len %d", dev, buffer, length);
+
+ // handle broken up transfers
+ if(dev->pktlen) {
+ memcpy(dev->pktbuf + dev->pktlen, buffer, length);
+ struct mux_header *mhdr = (struct mux_header *)dev->pktbuf;
+ if((length < USB_MRU) || (ntohl(mhdr->length) == length)) {
+ 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;
+ int payload_length;
+
+ switch(ntohl(mhdr->protocol)) {
+ case MUX_PROTO_VERSION:
+ device_version_input(dev, (struct version_header *)(mhdr+1));
+ break;
+ case MUX_PROTO_TCP:
+ 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_PKTBUF_SIZE);
+ 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\n", 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
new file mode 100644
index 0000000..ce6c50b
--- /dev/null
+++ b/daemon/device.h
@@ -0,0 +1,52 @@
+/*
+ usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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, int 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
new file mode 100644
index 0000000..2ccb3cc
--- /dev/null
+++ b/daemon/log.c
@@ -0,0 +1,94 @@
+/*
+ usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <time.h>
+#include <sys/time.h>
+#include <syslog.h>
+
+#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;
+
+ gettimeofday(&ts, NULL);
+ tp = localtime(&ts.tv_sec);
+
+ if(level > log_level)
+ return;
+
+ 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
new file mode 100644
index 0000000..4a2ac2e
--- /dev/null
+++ b/daemon/log.h
@@ -0,0 +1,43 @@
+/*
+ usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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
new file mode 100644
index 0000000..dde99c2
--- /dev/null
+++ b/daemon/main.c
@@ -0,0 +1,548 @@
+/*
+ usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+#define _BSD_SOURCE
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <pwd.h>
+#include <grp.h>
+
+#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;
+
+static int verbose = 0;
+static int foreground = 0;
+static int drop_privileges = 0;
+static const char *drop_user = "usbmux";
+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) {
+ usbmuxd_log(LL_NOTICE,"Caught signal %d, exiting", sig);
+ should_exit = 1;
+ } else {
+ if(opt_udev) {
+ 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 {
+ usbmuxd_log(LL_INFO, "Caught SIGUSR1 but we weren't started in --udev mode, ignoring");
+ }
+ }
+}
+
+void set_signal_handlers(void)
+{
+ struct sigaction sa;
+ 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);
+}
+
+int main_loop(int listenfd)
+{
+ int to, cnt, i, dto;
+ struct fdlist 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_create(&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);
+
+ cnt = poll(pollfds.fds, pollfds.count, to);
+ usbmuxd_log(LL_FLOOD, "poll() returned %d", cnt);
+
+ if(cnt == -1) {
+ if(errno == EINTR && should_exit) {
+ usbmuxd_log(LL_INFO, "event processing interrupted");
+ fdlist_free(&pollfds);
+ return 0;
+ }
+ } 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<pollfds.count; i++) {
+ if(pollfds.fds[i].revents) {
+ if(!done_usb && pollfds.owners[i] == FD_USB) {
+ if(usb_process() < 0) {
+ usbmuxd_log(LL_FATAL, "usb_process() failed");
+ fdlist_free(&pollfds);
+ return -1;
+ }
+ done_usb = 1;
+ }
+ if(pollfds.owners[i] == FD_LISTEN) {
+ if(client_accept(listenfd) < 0) {
+ usbmuxd_log(LL_FATAL, "client_accept() failed");
+ fdlist_free(&pollfds);
+ return -1;
+ }
+ }
+ if(pollfds.owners[i] == FD_CLIENT) {
+ client_process(pollfds.fds[i].fd, pollfds.fds[i].revents);
+ }
+ }
+ }
+ }
+ fdlist_free(&pollfds);
+ }
+ return 0;
+}
+
+/**
+ * make this program run detached from the current console
+ */
+static int daemonize(void)
+{
+ pid_t pid;
+ pid_t sid;
+ int pfd[2];
+ int res;
+
+ // already a daemon
+ if (getppid() == 1)
+ return 0;
+
+ if((res = pipe(pfd)) < 0) {
+ usbmuxd_log(LL_FATAL, "pipe() failed.");
+ return res;
+ }
+
+ pid = fork();
+ if (pid < 0) {
+ usbmuxd_log(LL_FATAL, "fork() failed.");
+ return pid;
+ }
+
+ if (pid > 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 If USER is not specified, defaults to usbmux.\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;
+ if(optarg)
+ 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, "usbmux v0.1 starting up");
+ should_exit = 0;
+
+ set_signal_handlers();
+
+ 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). exiting.", lock.l_pid);
+ res = 0;
+ }
+ 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 = getpwnam(drop_user);
+ if (!pw) {
+ usbmuxd_log(LL_FATAL, "Dropping privileges failed, check if user '%s' exists!", drop_user);
+ res = -1;
+ goto terminate;
+ }
+
+ 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;
+
+ res = main_loop(listenfd);
+ if(res < 0)
+ usbmuxd_log(LL_FATAL, "main_loop failed");
+
+ usbmuxd_log(LL_NOTICE, "usbmux 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
new file mode 100644
index 0000000..c09cdc9
--- /dev/null
+++ b/daemon/usb-linux.c
@@ -0,0 +1,542 @@
+/*
+ usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <libusb.h>
+
+#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;
+ 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 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, USB_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, BULK_OUT, (void*)buf, length, tx_callback, dev, 0);
+ xfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK;
+#ifndef EXPLICIT_ZLP_TRANSACTION
+ if (length % dev->wMaxPacketSize == 0) {
+ xfer->flags |= LIBUSB_TRANSFER_ZERO_PACKET;
+ }
+#endif
+ 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);
+#ifdef EXPLICIT_ZLP_TRANSACTION
+ 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, BULK_OUT, buffer, 0, tx_callback, dev, 0);
+ xfer->flags = LIBUSB_TRANSFER_SHORT_NOT_OK;
+ 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);
+ }
+#endif
+ 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, BULK_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;
+}
+
+static int usb_discover(void)
+{
+ int cnt, i, 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; i<cnt; i++) {
+ // the following are non-blocking operations on the device list
+ libusb_device *dev = devs[i];
+ uint8_t bus = libusb_get_bus_number(dev);
+ uint8_t address = libusb_get_device_address(dev);
+ struct libusb_device_descriptor devdesc;
+ int found = 0;
+ FOREACH(struct usb_device *usbdev, &device_list) {
+ if(usbdev->bus == 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_IPHONE2G) &&
+ (devdesc.idProduct != PID_ITOUCH1G) &&
+ (devdesc.idProduct != PID_IPHONE3G) &&
+ (devdesc.idProduct != PID_ITOUCH2G) &&
+ (devdesc.idProduct != PID_IPHONE3GS))
+ 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, &current_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) {
+ 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;
+ }
+ }
+ if((res = libusb_claim_interface(handle, USB_INTERFACE)) != 0) {
+ usbmuxd_log(LL_WARNING, "Could not claim interface %d for device %d-%d: %d", USB_INTERFACE, bus, address, res);
+ libusb_close(handle);
+ continue;
+ }
+ struct usb_device *usbdev;
+ usbdev = malloc(sizeof(struct usb_device));
+
+ 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, USB_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 = 0;
+ struct libusb_config_descriptor *cfg;
+ if (libusb_get_active_config_descriptor(dev, &cfg) == 0
+ && cfg && cfg->bNumInterfaces >= (USB_INTERFACE+1)) {
+ const struct libusb_interface *ifp = &cfg->interface[USB_INTERFACE];
+ if (ifp && ifp->num_altsetting >= 1) {
+ const struct libusb_interface_descriptor *as = &ifp->altsetting[0];
+ int i;
+ for (i = 0; i < as->bNumEndpoints; i++) {
+ const struct libusb_endpoint_descriptor *ep = &as->endpoint[i];
+ if (ep->bEndpointAddress == BULK_OUT) {
+ usbdev->wMaxPacketSize = ep->wMaxPacketSize;
+ }
+ }
+ }
+ }
+ 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);
+}
+
+static int dev_poll_remain_ms(void)
+{
+ int msecs;
+ struct timeval tv;
+ 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;
+ 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
new file mode 100644
index 0000000..621ccb2
--- /dev/null
+++ b/daemon/usb.h
@@ -0,0 +1,66 @@
+/*
+ usbmuxd - iPhone/iPod Touch USB multiplex server daemon
+
+Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
+
+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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+#ifndef __USB_H__
+#define __USB_H__
+
+#include <stdint.h>
+#include "utils.h"
+
+#define BULK_IN 0x85
+#define BULK_OUT 0x04
+
+// 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_IPHONE2G 0x1290
+#define PID_ITOUCH1G 0x1291
+#define PID_IPHONE3G 0x1292
+#define PID_ITOUCH2G 0x1293
+#define PID_IPHONE3GS 0x1294
+
+#define USB_INTERFACE 1
+
+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_process(void);
+int usb_process_timeout(int msec);
+
+#endif
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