diff options
| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | AUTHORS | 5 | ||||
| -rw-r--r-- | CMakeLists.txt | 10 | ||||
| -rw-r--r-- | COPYING.GPLv2 | 340 | ||||
| -rw-r--r-- | COPYING.GPLv3 (renamed from usbmuxd/COPYING) | 0 | ||||
| -rw-r--r-- | COPYING.LGPLv2.1 | 502 | ||||
| -rw-r--r-- | Modules/FindUSB.cmake (renamed from usbmuxd/Modules/FindUSB.cmake) | 0 | ||||
| -rw-r--r-- | Modules/LibFindMacros.cmake (renamed from usbmuxd/Modules/LibFindMacros.cmake) | 0 | ||||
| -rw-r--r-- | README | 150 | ||||
| -rw-r--r-- | README.devel | 50 | ||||
| -rw-r--r-- | libusbmuxd/CMakeLists.txt | 12 | ||||
| -rw-r--r-- | libusbmuxd/libusbmuxd.c | 248 | ||||
| -rw-r--r-- | libusbmuxd/sock_stuff.c | 301 | ||||
| -rw-r--r-- | libusbmuxd/sock_stuff.h | 28 | ||||
| -rw-r--r-- | libusbmuxd/usbmuxd-proto.h | 52 | ||||
| -rw-r--r-- | libusbmuxd/usbmuxd.h | 91 | ||||
| -rw-r--r-- | tools/CMakeLists.txt | 8 | ||||
| -rw-r--r-- | tools/iproxy.c | 241 | ||||
| -rw-r--r-- | udev/85-usbmuxd.rules.in | 7 | ||||
| -rw-r--r-- | udev/CMakeLists.txt | 2 | ||||
| -rw-r--r-- | usbmuxd/.gitignore | 3 | ||||
| -rw-r--r-- | usbmuxd/CMakeLists.txt | 9 | ||||
| -rw-r--r-- | usbmuxd/main.c | 2 |
23 files changed, 2001 insertions, 62 deletions
@@ -1 +1,3 @@ *~ +build + @@ -0,0 +1,5 @@ +Nikias Bassen +Hector Martin +Bastien Nocera +Paul Sladen +Martin Szulecki diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..ba1653f --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,10 @@ +PROJECT(usbmuxd) + +cmake_minimum_required(VERSION 2.6) + +set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/Modules/") + +add_subdirectory (libusbmuxd) +add_subdirectory (usbmuxd) +add_subdirectory (tools) +add_subdirectory (udev) diff --git a/COPYING.GPLv2 b/COPYING.GPLv2 new file mode 100644 index 0000000..08ddefd --- /dev/null +++ b/COPYING.GPLv2 @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + <signature of Ty Coon>, 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/usbmuxd/Modules/FindUSB.cmake b/Modules/FindUSB.cmake index d562b98..d562b98 100644 --- a/usbmuxd/Modules/FindUSB.cmake +++ b/Modules/FindUSB.cmake diff --git a/usbmuxd/Modules/LibFindMacros.cmake b/Modules/LibFindMacros.cmake index 795d6b7..795d6b7 100644 --- a/usbmuxd/Modules/LibFindMacros.cmake +++ b/Modules/LibFindMacros.cmake @@ -1,27 +1,103 @@ -This is an implementation of the iPhone/iPod Touch USB connection protocol. - -The server should be mostly compatible with the original Apple usbmuxd -protocol. This means that a single client lib should be able to interoperate -with both. Apple has now introduced a new plist-based version of the protocol -which works in essentially the same way but uses XML-based plists as -command/response payloads instead of binary blobs. The outer binary protocol is -still the same used but now the only command/response format is 8 (plist). - -The server is under the usbmuxd directory. You'll need CMake and libusb 1.0 to -build it. Due to a bug in zero-length packet handling, you'll need either the -git version of libusb or 1.0.3, whenever it comes out. - -There is a Python client library in the python-client directory. It should be -compatible with Windows, Linux, and OSX (using the Apple usbmuxd on Win and OSX) -tcprelay.py implements a TCP connection forwarder that lets you pipe TCP -connections to localhost to the phone. Run it with --help for usage. The Python -client lib is also compatible with the new plist-based protocol and should -automatically select it if it sees such a server. However, you need Python 2.6 -for Windows and Linux in this case, since the plistlib module doesn't come with -older versions under these OSes (not that you'll have a server that supports -this protocol under Linux. TODO: does Windows iTunes use this yet?) - -ARCHITECTURE +Background +========== + +'usbmuxd' stands for "USB multiplexing daemon". To the user/developer what it +actually does is to proxy requests over a USB cable on directly to a listening +TCP port on the iPhone. + +Multiple connections to different TCP ports can happen in parallel. An example +(and useful) tool called 'iproxy' is included that allows you to forward +localhost ports to the device---allows SSH over USB on jailbroken devices, or +allowing access the lockdown daemon (and then to all of the file access, sync, +notification and backup services running on the device). + +This higher-level layers are handled by libiphone. The version of libiphone +compatible with the 'usbmuxd' infrastructure is called 'libiphone-usbmuxd'. +'ifuse' is then able to sit on top of this. + +There is also a Python implementation of the client library in the python-client +library, and an example tcprelay.py which performs a similar function to iproxy. +This implementation supports OSX and Windows and the new iTunes plist-based +usbmuxd protocol, so it is portable and will run on those operating systems with +no modification, using Apple's native usbmuxd. This is useful if you need to +tunnel to your phone from another OS in a pinch. Run python tcpclient.py --help +for usage information. + +Building +======== + + mkdir build + cd build + cmake .. + make + sudo make install + +Running (with magic) +==================== + + (Unplug + replug your iPhone) + ./iproxy 2222 22 & + ssh -p 2222 root@localhost + +Hopefully you get the normal SSH login prompt. You may still lots of debugging +output for the moment. If this is getting in the way of your ssh login, then +run the 'ssh' command from a different xterminal +or virtual console. + + +Running (without magic) +======================= + +If 'udev' is _not_ automatically running on your machine and picking up the new +.rules file, you will need to start usbmuxd by hand first. Check it's running +and that there is only one copy with 'ps aux | grep +usbmuxd'. + + sudo usbmuxd -U -v -v & + ./iproxy 2222 22 & + ssh -p 2222 root@localhost + + +Tip: Starting SSH if disabled +============================= + +If your iphone is rooted, but SSH isn't started and you _cannot_ (for instance, +cracked/broken screen) get to the Services control panel on the device, then you +can start the SSH service over the USB by +mounting the (jailbroken) filesystem. + +You will need to mount it usbing 'ifuse --afc2' (to access the root directory of +the device), and then edit: + + /Library/LaunchDaemons/com.openssh.sshd.plist + +to _remove_ the lines: + + <key>Diabled</key> + <true/> + +Reboot the device and then sshd should be running. + +TODO +==== + +The server currently assumes that the phone is well-behaved and does not do a +bunch of checks like looking for the expected SEQ and ACK numbers from it. This +is normally not an issue, but it's annoying for debugging because lost packets +(which shouldn't happen, but can happen if the code is buggy) mean that stuff +gets out of sync and then might crash and burn dozens of packets later. + +The server needs more testing, and some optimizing. + +Someone should probably do some edge-case testing on the TCP stuff. + +The outgoing ACK handling on the server probably needs some thought. Currently, +when there's an outstanding ACK, we send it after a timeout (to avoid sending +a no-payload ACK packet for everything the phone sends us). However, there's +probably a better way of doing this. + +Architecture information +======================== The iPhone / iPod Touch basically implements a rather strange USB networking system that operates at a higher level. It is of course completely proprietary. @@ -90,9 +166,6 @@ Note that all normal packets need to have flags set to ACK (and only ACK). There is no support for, erm, not-acking. Keep the ack number field valid at all times. - -GOTCHAS AND ANNOYANCES - The usbmuxd CONNECT request port field is byte-swapped (network-endian). This is even more annoying for the plist based protocol, since it's even true there (where the field is plain text). So even for the plain text int, you need to @@ -123,26 +196,3 @@ at non-16k boundaries that are multiples of 512, but that seems to work fine. I guess the ZLPs might cause spurious 0-byte transfers to show up on RX if things line up right, but we ignore those. By the way, the maximum packet/transfer size is 65535 bytes due to the 16-bit length header of the usbmux protocol. - -TODO - -The server currently assumes that the phone is well-behaved and does not do a -bunch of checks like looking for the expected SEQ and ACK numbers from it. This -is normally not an issue, but it's annoying for debugging because lost packets -(which shouldn't happen, but can happen if the code is buggy) mean that stuff -gets out of sync and then might crash and burn dozens of packets later. - -The server needs a proper front-end (i.e. daemonizing, commandline options, -etc), more testing, and some optimizing. - -Someone should probably do some edge-case testing on the TCP stuff. - -At some point we should probably write a C client lib. - -The outgoing ACK handling on the server probably needs some thought. Currently, -when there's an outstanding ACK, we send it after a timeout (to avoid sending -a no-payload ACK packet for everything the phone sends us). However, there's -probably a better way of doing this. - - - diff --git a/README.devel b/README.devel new file mode 100644 index 0000000..727e095 --- /dev/null +++ b/README.devel @@ -0,0 +1,50 @@ +Background +========== + +'libusbmuxd' makes it really simple to talk to a running 'usbmuxd' and +hides all the details for you. There are two function calls: + +usbmuxd_scan() +-------------- + +This returns a list of all available iPhone-like devices that are +available for talking to. The returned array contains the USB +product_id, hex formatted serial_number of any iPhones/iTouches and a +non-descript 'handle' for all those devices that are within range (as +of March 2009, that means a device directly plugged into the +computer's USB port). + +Once you have found the device you want to communicate with, take its +'handle' and pass this to usbmuxd_connect(). + +usbmuxd_connect() +----------------- + +This takes a handle, a destination port number and tries to setup +a proxy a connection. It returns a file-descriptor which you should +be able to read(), write() and select() on like any other active network +socket connection. + + +Technical details +================= + +When usbmuxd is running (normally started, or stopped as a result of +'udev' auto-insertion messages), it provides a socket interface in +'/var/run/usbmuxd' that is designed to be compatible with the socket +interface that is provided on MacOSX. + +The structures for communicating over this device are documented +in the 'usbmuxd-proto.h', but you shouldn't need to view them +directly if you are using the libusbmuxd.so library for easy access. + + +Example +======= + +#include <usbmuxd.h> + +... + +gcc -o leetphone leetphone.c -lusbmuxd + diff --git a/libusbmuxd/CMakeLists.txt b/libusbmuxd/CMakeLists.txt new file mode 100644 index 0000000..61de1a8 --- /dev/null +++ b/libusbmuxd/CMakeLists.txt @@ -0,0 +1,12 @@ +add_library (libusbmuxd libusbmuxd.c sock_stuff.c) + +# 'lib' is a UNIXism, the proper CMake target is usbmuxd +# But we can't use that due to the conflict with the usbmuxd daemon, +# so instead change the library output base name to usbmuxd here +set_target_properties(libusbmuxd PROPERTIES OUTPUT_NAME usbmuxd) + +install(TARGETS libusbmuxd + ARCHIVE DESTINATION lib + LIBRARY DESTINATION lib +) +install(FILES usbmuxd.h usbmuxd-proto.h DESTINATION include) diff --git a/libusbmuxd/libusbmuxd.c b/libusbmuxd/libusbmuxd.c new file mode 100644 index 0000000..090695f --- /dev/null +++ b/libusbmuxd/libusbmuxd.c @@ -0,0 +1,248 @@ +#include <stdint.h> +#include <stdlib.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <sys/socket.h> +#include <arpa/inet.h> +#include <unistd.h> + +// usbmuxd public interface +#include "usbmuxd.h" +// usbmuxd protocol +#include "usbmuxd-proto.h" +// socket utility functions +#include "sock_stuff.h" + +static int usbmuxd_get_result(int sfd, uint32_t tag, uint32_t * result) +{ + struct usbmuxd_result res; + int recv_len; + + if (!result) { + return -EINVAL; + } + + if ((recv_len = recv_buf(sfd, &res, sizeof(res))) <= 0) { + perror("recv"); + return -errno; + } else { + if ((recv_len == sizeof(res)) + && (res.header.length == (uint32_t) recv_len) + && (res.header.reserved == 0) + && (res.header.type == USBMUXD_RESULT) + ) { + *result = res.result; + if (res.header.tag == tag) { + return 1; + } else { + return 0; + } + } + } + + return -1; +} + +int usbmuxd_scan(usbmuxd_scan_result ** available_devices) +{ + struct usbmuxd_scan_request s_req; + int sfd; + int scan_success = 0; + uint32_t res; + uint32_t pktlen; + int recv_len; + usbmuxd_scan_result *newlist = NULL; + struct usbmuxd_device_info_record dev_info_pkt; + int dev_cnt = 0; + + sfd = connect_unix_socket(USBMUXD_SOCKET_FILE); + if (sfd < 0) { + fprintf(stderr, "%s: error opening socket!\n", __func__); + return sfd; + } + + s_req.header.length = sizeof(struct usbmuxd_scan_request); + s_req.header.reserved = 0; + s_req.header.type = USBMUXD_SCAN; + s_req.header.tag = 2; + + // send scan request packet + if (send_buf(sfd, &s_req, s_req.header.length) == + (int) s_req.header.length) { + res = -1; + // get response + if (usbmuxd_get_result(sfd, s_req.header.tag, &res) && (res == 0)) { + scan_success = 1; + } else { + fprintf(stderr, + "%s: Did not get response to scan request (with result=0)...\n", + __func__); + close(sfd); + return res; + } + } + + if (!scan_success) { + fprintf(stderr, "%s: Could not send scan request!\n", __func__); + return -1; + } + + *available_devices = NULL; + // receive device list + while (1) { + if (recv_buf_timeout(sfd, &pktlen, 4, MSG_PEEK, 1000) == 4) { + if (pktlen != sizeof(dev_info_pkt)) { + // invalid packet size received! + fprintf(stderr, + "%s: Invalid packet size (%d) received when expecting a device info record.\n", + __func__, pktlen); + break; + } + + recv_len = recv_buf(sfd, &dev_info_pkt, pktlen); + if (recv_len <= 0) { + fprintf(stderr, + "%s: Error when receiving device info record\n", + __func__); + break; + } else if ((uint32_t) recv_len < pktlen) { + fprintf(stderr, + "%s: received less data than specified in header!\n", + __func__); + } else { + //fprintf(stderr, "%s: got device record with id %d, UUID=%s\n", __func__, dev_info_pkt.device_info.device_id, dev_info_pkt.device_info.serial_number); + newlist = + (usbmuxd_scan_result *) realloc(*available_devices, + sizeof + (usbmuxd_scan_result) * + (dev_cnt + 1)); + if (newlist) { + newlist[dev_cnt].handle = + (int) dev_info_pkt.device.device_id; + newlist[dev_cnt].product_id = + dev_info_pkt.device.product_id; + memset(newlist[dev_cnt].serial_number, '\0', + sizeof(newlist[dev_cnt].serial_number)); + memcpy(newlist[dev_cnt].serial_number, + dev_info_pkt.device.serial_number, + sizeof(dev_info_pkt.device.serial_number)); + *available_devices = newlist; + dev_cnt++; + } else { + fprintf(stderr, + "%s: ERROR: out of memory when trying to realloc!\n", + __func__); + break; + } + } + } else { + // we _should_ have all of them now. + // or perhaps an error occured. + break; + } + } + + // terminating zero record + newlist = + (usbmuxd_scan_result *) realloc(*available_devices, + sizeof(usbmuxd_scan_result) * + (dev_cnt + 1)); + memset(newlist + dev_cnt, 0, sizeof(usbmuxd_scan_result)); + *available_devices = newlist; + + return dev_cnt; +} + +int usbmuxd_connect(const int handle, const unsigned short tcp_port) +{ + int sfd; + struct usbmuxd_connect_request c_req; + int connected = 0; + uint32_t res = -1; + + sfd = connect_unix_socket(USBMUXD_SOCKET_FILE); + if (sfd < 0) { + fprintf(stderr, "%s: Error: Connection to usbmuxd failed: %s\n", + __func__, strerror(errno)); + return sfd; + } + + c_req.header.length = sizeof(c_req); + c_req.header.reserved = 0; + c_req.header.type = USBMUXD_CONNECT; + c_req.header.tag = 3; + c_req.device_id = (uint32_t) handle; + c_req.tcp_dport = htons(tcp_port); + c_req.reserved = 0; + + if (send_buf(sfd, &c_req, sizeof(c_req)) < 0) { + perror("send"); + } else { + // read ACK + //fprintf(stderr, "%s: Reading connect result...\n", __func__); + if (usbmuxd_get_result(sfd, c_req.header.tag, &res)) { + if (res == 0) { + //fprintf(stderr, "%s: Connect success!\n", __func__); + connected = 1; + } else { + fprintf(stderr, "%s: Connect failed, Error code=%d\n", + __func__, res); + } + } + } + + if (connected) { + return sfd; + } + + close(sfd); + + return -1; +} + +int usbmuxd_disconnect(int sfd) +{ + return close(sfd); +} + +int usbmuxd_send(int sfd, const char *data, uint32_t len, uint32_t *sent_bytes) +{ + int num_sent; + + if (sfd < 0) { + return -EINVAL; + } + + num_sent = send(sfd, (void*)data, len, 0); + if (num_sent < 0) { + *sent_bytes = 0; + fprintf(stderr, "%s: Error %d when sending: %s\n", __func__, num_sent, strerror(errno)); + return num_sent; + } else if ((uint32_t)num_sent < len) { + fprintf(stderr, "%s: Warning: Did not send enough (only %d of %d)\n", __func__, num_sent, len); + } + + *sent_bytes = num_sent; + + return 0; +} + +int usbmuxd_recv_timeout(int sfd, char *data, uint32_t len, uint32_t *recv_bytes, unsigned int timeout) +{ + int num_recv = recv_buf_timeout(sfd, (void*)data, len, 0, timeout); + if (num_recv < 0) { + *recv_bytes = 0; + return num_recv; + } + + *recv_bytes = num_recv; + + return 0; +} + +int usbmuxd_recv(int sfd, char *data, uint32_t len, uint32_t *recv_bytes) +{ + return usbmuxd_recv_timeout(sfd, data, len, recv_bytes, 5000); +} + diff --git a/libusbmuxd/sock_stuff.c b/libusbmuxd/sock_stuff.c new file mode 100644 index 0000000..137375d --- /dev/null +++ b/libusbmuxd/sock_stuff.c @@ -0,0 +1,301 @@ +#include <stdio.h> +#include <stddef.h> +#include <unistd.h> +#include <errno.h> +#include <sys/time.h> +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <netinet/in.h> +#include <netdb.h> +#include <arpa/inet.h> +#include "sock_stuff.h" + +#define RECV_TIMEOUT 20000 + +static int verbose = 0; + +void sock_stuff_set_verbose(int level) +{ + verbose = level; +} + +int create_unix_socket(const char *filename) +{ + struct sockaddr_un name; + int sock; + size_t size; + + // remove if still present + unlink(filename); + + /* Create the socket. */ + sock = socket(PF_LOCAL, SOCK_STREAM, 0); + if (sock < 0) { + perror("socket"); + return -1; + } + + /* Bind a name to the socket. */ + name.sun_family = AF_LOCAL; + strncpy(name.sun_path, filename, sizeof(name.sun_path)); + name.sun_path[sizeof(name.sun_path) - 1] = '\0'; + + /* The size of the address is + the offset of the start of the filename, + plus its length, + plus one for the terminating null byte. + Alternatively you can just do: + size = SUN_LEN (&name); + */ + size = (offsetof(struct sockaddr_un, sun_path) + + strlen(name.sun_path) + 1); + + if (bind(sock, (struct sockaddr *) &name, size) < 0) { + perror("bind"); + close(sock); + return -1; + } + + if (listen(sock, 10) < 0) { + perror("listen"); + close(sock); + return -1; + } + + return sock; +} + +int connect_unix_socket(const char *filename) +{ + struct sockaddr_un name; + int sfd = -1; + size_t size; + struct stat fst; + + // check if socket file exists... + if (stat(filename, &fst) != 0) { + if (verbose >= 2) + fprintf(stderr, "%s: stat '%s': %s\n", __func__, filename, + strerror(errno)); + return -1; + } + // ... and if it is a unix domain socket + if (!S_ISSOCK(fst.st_mode)) { + if (verbose >= 2) + fprintf(stderr, "%s: File '%s' is not a socket!\n", __func__, + filename); + return -1; + } + // make a new socket + if ((sfd = socket(PF_LOCAL, SOCK_STREAM, 0)) < 0) { + if (verbose >= 2) + fprintf(stderr, "%s: socket: %s\n", __func__, strerror(errno)); + return -1; + } + // and connect to 'filename' + name.sun_family = AF_LOCAL; + strncpy(name.sun_path, filename, sizeof(name.sun_path)); + name.sun_path[sizeof(name.sun_path) - 1] = 0; + + size = (offsetof(struct sockaddr_un, sun_path) + + strlen(name.sun_path) + 1); + + if (connect(sfd, (struct sockaddr *) &name, size) < 0) { + close(sfd); + if (verbose >= 2) + fprintf(stderr, "%s: connect: %s\n", __func__, + strerror(errno)); + return -1; + } + + return sfd; +} + +int create_socket(uint16_t port) +{ + int sfd = -1; + int yes = 1; + struct sockaddr_in saddr; + + if (0 > (sfd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP))) { + perror("socket()"); + return -1; + } + + if (setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1) { + perror("setsockopt()"); + close(sfd); + return -1; + } + + memset((void *) &saddr, 0, sizeof(saddr)); + saddr.sin_family = AF_INET; + saddr.sin_addr.s_addr = htonl(INADDR_ANY); + saddr.sin_port = htons(port); + + if (0 > bind(sfd, (struct sockaddr *) &saddr, sizeof(saddr))) { + perror("bind()"); + close(sfd); + return -1; + } + + if (listen(sfd, 1) == -1) { + perror("listen()"); + close(sfd); + return -1; + } + + return sfd; +} + +int connect_socket(const char *addr, uint16_t port) +{ + int sfd = -1; + int yes = 1; + struct hostent *hp; + struct sockaddr_in saddr; + + if (!addr) { + errno = EINVAL; + return -1; + } + + if ((hp = gethostbyname(addr)) == NULL) { + if (verbose >= 2) + fprintf(stderr, "%s: unknown host '%s'\n", __func__, addr); + return -1; + } + + if (!hp->h_addr) { + if (verbose >= 2) + fprintf(stderr, "%s: gethostbyname returned NULL address!\n", + __func__); + return -1; + } + + if (0 > (sfd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP))) { + perror("socket()"); + return -1; + } + + if (setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1) { + perror("setsockopt()"); + close(sfd); + return -1; + } + + memset((void *) &saddr, 0, sizeof(saddr)); + saddr.sin_family = AF_INET; + saddr.sin_addr.s_addr = *(uint32_t *) hp->h_addr; + saddr.sin_port = htons(port); + + if (connect(sfd, (struct sockaddr *) &saddr, sizeof(saddr)) < 0) { + perror("connect"); + close(sfd); + return -2; + } + + return sfd; +} + +int check_fd(int fd, fd_mode fdm, unsigned int timeout) +{ + fd_set fds; + int sret; + int eagain; + struct timeval to; + + if (fd <= 0) { + if (verbose >= 2) + fprintf(stderr, "ERROR: invalid fd in check_fd %d\n", fd); + return -1; + } + + FD_ZERO(&fds); + FD_SET(fd, &fds); + + to.tv_sec = (time_t) (timeout / 1000); + to.tv_usec = (time_t) ((timeout - (to.tv_sec * 1000)) * 1000); + + sret = -1; + + do { + eagain = 0; + switch (fdm) { + case FD_READ: + sret = select(fd + 1, &fds, NULL, NULL, &to); + break; + case FD_WRITE: + sret = select(fd + 1, NULL, &fds, NULL, &to); + break; + case FD_EXCEPT: + sret = select(fd + 1, NULL, NULL, &fds, &to); + break; + default: + return -1; + } + + if (sret < 0) { + switch (errno) { + case EINTR: + // interrupt signal in select + if (verbose >= 2) + fprintf(stderr, "%s: EINTR\n", __func__); + eagain = 1; + break; + case EAGAIN: + if (verbose >= 2) + fprintf(stderr, "%s: EAGAIN\n", __func__); + break; + default: + if (verbose >= 2) + fprintf(stderr, "%s: select failed: %s\n", __func__, + strerror(errno)); + return -1; + } + } + } while (eagain); + + return sret; +} + +int recv_buf(int fd, void *data, size_t length) +{ + return recv_buf_timeout(fd, data, length, 0, RECV_TIMEOUT); +} + +int peek_buf(int fd, void *data, size_t length) +{ + return recv_buf_timeout(fd, data, length, MSG_PEEK, RECV_TIMEOUT); +} + +int recv_buf_timeout(int fd, void *data, size_t length, int flags, + unsigned int timeout) +{ + int res; + int result; + + // check if data is available + res = check_fd(fd, FD_READ, timeout); + if (res <= 0) { + return res; + } + // if we get here, there _is_ data available + result = recv(fd, data, length, flags); + if (res > 0 && result == 0) { + // but this is an error condition + if (verbose >= 3) + fprintf(stderr, "%s: fd=%d recv returned 0\n", __func__, fd); + return -EAGAIN; + } + if (result < 0) { + return -errno; + } + return result; +} + +int send_buf(int fd, void *data, size_t length) +{ + return send(fd, data, length, 0); +} diff --git a/libusbmuxd/sock_stuff.h b/libusbmuxd/sock_stuff.h new file mode 100644 index 0000000..190f7e1 --- /dev/null +++ b/libusbmuxd/sock_stuff.h @@ -0,0 +1,28 @@ +#ifndef __SOCK_STUFF_H +#define __SOCK_STUFF_H + +#include <stdint.h> + +enum fd_mode { + FD_READ, + FD_WRITE, + FD_EXCEPT +}; +typedef enum fd_mode fd_mode; + +int create_unix_socket(const char *filename); +int connect_unix_socket(const char *filename); +int create_socket(uint16_t port); +int connect_socket(const char *addr, uint16_t port); +int check_fd(int fd, fd_mode fdm, unsigned int timeout); + +int recv_buf(int fd, void *data, size_t size); +int peek_buf(int fd, void *data, size_t size); +int recv_buf_timeout(int fd, void *data, size_t size, int flags, + unsigned int timeout); + +int send_buf(int fd, void *data, size_t size); + +void sock_stuff_set_verbose(int level); + +#endif /* __SOCK_STUFF_H */ diff --git a/libusbmuxd/usbmuxd-proto.h b/libusbmuxd/usbmuxd-proto.h new file mode 100644 index 0000000..7f8c2d6 --- /dev/null +++ b/libusbmuxd/usbmuxd-proto.h @@ -0,0 +1,52 @@ +/* Protocol defintion for usbmuxd proxy protocol */ + +#ifndef __USBMUXD_PROTO_H +#define __USBMUXD_PROTO_H + +#include <stdint.h> + +#define USBMUXD_SOCKET_FILE "/var/run/usbmuxd" + +struct usbmuxd_header { + uint32_t length; // length of message, including header + uint32_t reserved; // always zero + uint32_t type; // message type + uint32_t tag; // responses to this query will echo back this tag +} __attribute__((__packed__)); + +struct usbmuxd_result { + struct usbmuxd_header header; + uint32_t result; +} __attribute__((__packed__)); + +struct usbmuxd_connect_request { + struct usbmuxd_header header; + uint32_t device_id; + uint16_t tcp_dport; // TCP port number + uint16_t reserved; // set to zero +} __attribute__((__packed__)); + +struct usbmuxd_device { + uint32_t device_id; + uint16_t product_id; + char serial_number[40]; +} __attribute__((__packed__)); + +struct usbmuxd_device_info_record { + struct usbmuxd_header header; + struct usbmuxd_device device; + char padding[222]; +} __attribute__((__packed__)); + +struct usbmuxd_scan_request { + struct usbmuxd_header header; +} __attribute__((__packed__)); + +enum { + USBMUXD_RESULT = 1, + USBMUXD_CONNECT = 2, + USBMUXD_SCAN = 3, + USBMUXD_DEVICE_INFO = 4, +}; + +#endif /* __USBMUXD_PROTO_H */ diff --git a/libusbmuxd/usbmuxd.h b/libusbmuxd/usbmuxd.h new file mode 100644 index 0000000..ba45ec3 --- /dev/null +++ b/libusbmuxd/usbmuxd.h @@ -0,0 +1,91 @@ +#ifndef __USBMUXD_H +#define __USBMUXD_H + +/** + * Array entry returned by 'usbmuxd_scan()' scanning. + * + * If more than one device is available, 'product_id' and + * 'serial_number' and be analysed to help make a selection. + * The relevant 'handle' should be passed to 'usbmuxd_connect()', to + * start a proxy connection. The value 'handle' should be considered + * opaque and no presumption made about the meaning of its value. + */ +typedef struct { + int handle; + int product_id; + char serial_number[41]; +} usbmuxd_scan_result; + +/** + * Contacts usbmuxd and performs a scan for connected devices. + * + * @param available_devices pointer to array of usbmuxd_scan_result. + * Array of available devices. The required 'handle' + * should be passed to 'usbmuxd_connect()'. The returned array + * is zero-terminated for convenience; the final (unused) + * entry containing handle == 0. The returned array pointer + * should be freed by passing to 'free()' after use. + * + * @return number of available devices, zero on no devices, or negative on error + */ +int usbmuxd_scan(usbmuxd_scan_result **available_devices); + +/** + * Request proxy connect to + * + * @param handle returned by 'usbmuxd_scan()' + * + * @param tcp_port TCP port number on device, in range 0-65535. + * common values are 62078 for lockdown, and 22 for SSH. + * + * @return file descriptor socket of the connection, or -1 on error + */ +int usbmuxd_connect(const int handle, const unsigned short tcp_port); + +/** + * Disconnect. For now, this just closes the socket file descriptor. + * + * @param sfd socker file descriptor returned by usbmuxd_connect() + * + * @return 0 on success, -1 on error. + */ +int usbmuxd_disconnect(int sfd); + +/** + * Send data to the specified socket. + * + * @param sfd socket file descriptor returned by usbmuxd_connect() + * @param data buffer to send + * @param len size of buffer to send + * @param sent_bytes how many bytes sent + * + * @return 0 on success, a negative errno value otherwise. + */ +int usbmuxd_send(int sfd, const char *data, uint32_t len, uint32_t *sent_bytes); + +/** + * Receive data from the specified socket. + * + * @param sfd socket file descriptor returned by usbmuxd_connect() + * @param data buffer to put the data to + * @param len number of bytes to receive + * @param recv_bytes number of bytes received + * @param timeout how many milliseconds to wait for data + * + * @return 0 on success, a negative errno value otherwise. + */ +int usbmuxd_recv_timeout(int sfd, char *data, uint32_t len, uint32_t *recv_bytes, unsigned int timeout); + +/** + * Receive data from the specified socket with a default timeout. + * + * @param sfd socket file descriptor returned by usbmuxd_connect() + * @param data buffer to put the data to + * @param len number of bytes to receive + * @param recv_bytes number of bytes received + * + * @return 0 on success, a negative errno value otherwise. + */ +int usbmuxd_recv(int sfd, char *data, uint32_t len, uint32_t *recv_bytes); + +#endif /* __USBMUXD_H */ diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt new file mode 100644 index 0000000..70ec3b3 --- /dev/null +++ b/tools/CMakeLists.txt @@ -0,0 +1,8 @@ +include_directories (${CMAKE_SOURCE_DIR}/libusbmuxd) +link_directories (${CMAKE_BINARY_DIR}/libusbmuxd) + +add_definitions(-Wall -O2 -g) +add_executable(iproxy iproxy.c) +target_link_libraries(iproxy libusbmuxd pthread) + +install(TARGETS iproxy RUNTIME DESTINATION bin)
\ No newline at end of file diff --git a/tools/iproxy.c b/tools/iproxy.c new file mode 100644 index 0000000..3cb2894 --- /dev/null +++ b/tools/iproxy.c @@ -0,0 +1,241 @@ +/* + * iproxy -- proxy that enables tcp service access to iPhone/iPod + * via USB cable + * TODO: improve code... + * + * Copyright (c) 2009 Nikias Bassen. All Rights Reserved. + * Based upon iTunnel source code, Copyright (c) 2008 Jing Su. + * http://www.cs.toronto.edu/~jingsu/itunnel/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <stddef.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <unistd.h> +#include <errno.h> +#include <arpa/inet.h> +#include <pthread.h> +#include "sock_stuff.h" +#include "usbmuxd.h" + +static uint16_t listen_port = 0; +static uint16_t device_port = 0; + +pthread_mutex_t smutex = PTHREAD_MUTEX_INITIALIZER; + +struct client_data { + int fd; + int sfd; + volatile int stop_ctos; + volatile int stop_stoc; +}; + +void *run_stoc_loop(void *arg) +{ + struct client_data *cdata = (struct client_data*)arg; + int recv_len; + int sent; + char buffer[131072]; + + printf("%s: fd = %d\n", __func__, cdata->fd); + + while (!cdata->stop_stoc && cdata->fd>0 && cdata->sfd>0) { + recv_len = recv_buf_timeout(cdata->sfd, buffer, sizeof(buffer), 0, 5000); + if (recv_len <= 0) { + if (recv_len == 0) { + // try again + continue; + } else { + fprintf(stderr, "recv failed: %s\n", strerror(errno)); + break; + } + } else { +// printf("received %d bytes from server\n", recv_len); + // send to socket + sent = send_buf(cdata->fd, buffer, recv_len); + if (sent < recv_len) { + if (sent <= 0) { + fprintf(stderr, "send failed: %s\n", strerror(errno)); + break; + } else { + fprintf(stderr, "only sent %d from %d bytes\n", sent, recv_len); + } + } else { + // sending succeeded, receive from device +// printf("pushed %d bytes to client\n", sent); + } + } + } + close(cdata->fd); + cdata->fd = -1; + cdata->stop_ctos = 1; + + return NULL; +} + +void *run_ctos_loop(void *arg) +{ + struct client_data *cdata = (struct client_data*)arg; + int recv_len; + int sent; + char buffer[131072]; + pthread_t stoc = 0; + + printf("%s: fd = %d\n", __func__, cdata->fd); + + cdata->stop_stoc = 0; + pthread_create(&stoc, NULL, run_stoc_loop, cdata); + + while (!cdata->stop_ctos && cdata->fd>0 && cdata->sfd>0) { + recv_len = recv_buf_timeout(cdata->fd, buffer, sizeof(buffer), 0, 5000); + if (recv_len <= 0) { + if (recv_len == 0) { + // try again + continue; + } else { + fprintf(stderr, "recv failed: %s\n", strerror(errno)); + break; + } + } else { +// printf("pulled %d bytes from client\n", recv_len); + // send to local socket + sent = send_buf(cdata->sfd, buffer, recv_len); + if (sent < recv_len) { + if (sent <= 0) { + fprintf(stderr, "send failed: %s\n", strerror(errno)); + break; + } else { + fprintf(stderr, "only sent %d from %d bytes\n", sent, recv_len); + } + } else { + // sending succeeded, receive from device +// printf("sent %d bytes to server\n", sent); + } + } + } + close(cdata->fd); + cdata->fd = -1; + cdata->stop_stoc = 1; + + pthread_join(stoc, NULL); + + return NULL; +} + +void *acceptor_thread(void *arg) +{ + struct client_data *cdata; + usbmuxd_scan_result *dev_list = NULL; + pthread_t ctos; + int count; + + if (!arg) { + fprintf(stderr, "invalid client_data provided!\n"); + return NULL; + } + + cdata = (struct client_data*)arg; + + if ((count = usbmuxd_scan(&dev_list)) < 0) { + printf("Connecting to usbmuxd failed, terminating.\n"); + free(dev_list); + return NULL; + } + + fprintf(stdout, "Number of available devices == %d\n", count); + + if (dev_list == NULL || dev_list[0].handle == 0) { + printf("No connected device found, terminating.\n"); + free(dev_list); + return NULL; + } + + fprintf(stdout, "Requesting connecion to device handle == %d (serial: %s), port %d\n", dev_list[0].handle, dev_list[0].serial_number, device_port); + + cdata->sfd = usbmuxd_connect(dev_list[0].handle, device_port); + free(dev_list); + if (cdata->sfd < 0) { + fprintf(stderr, "Error connecting to device!\n"); + } else { + cdata->stop_ctos = 0; + pthread_create(&ctos, NULL, run_ctos_loop, cdata); + pthread_join(ctos, NULL); + } + + if (cdata->fd > 0) { + close(cdata->fd); + } + if (cdata->sfd > 0) { + close(cdata->sfd); + } + + return NULL; +} + +int main(int argc, char **argv) +{ + int mysock = -1; + + if (argc != 3) { + printf("usage: %s LOCAL_TCP_PORT DEVICE_TCP_PORT\n", argv[0]); + return 0; + } + + listen_port = atoi(argv[1]); + device_port = atoi(argv[2]); + + if (!listen_port) { + fprintf(stderr, "Invalid listen_port specified!\n"); + return -EINVAL; + } + + if (!device_port) { + fprintf(stderr, "Invalid device_port specified!\n"); + return -EINVAL; + } + + // first create the listening socket endpoint waiting for connections. + mysock = create_socket(listen_port); + if (mysock < 0) { + fprintf(stderr, "Error creating socket: %s\n", strerror(errno)); + return -errno; + } else { + pthread_t acceptor; + struct sockaddr_in c_addr; + socklen_t len = sizeof(struct sockaddr_in); + struct client_data cdata; + int c_sock; + while (1) { + printf("waiting for connection\n"); + c_sock = accept(mysock, (struct sockaddr*)&c_addr, &len); + if (c_sock) { + printf("accepted connection, fd = %d\n", c_sock); + cdata.fd = c_sock; + pthread_create(&acceptor, NULL, acceptor_thread, &cdata); + pthread_join(acceptor, NULL); + } else { + break; + } + } + close(c_sock); + close(mysock); + } + + return 0; +} diff --git a/udev/85-usbmuxd.rules.in b/udev/85-usbmuxd.rules.in new file mode 100644 index 0000000..3521ccb --- /dev/null +++ b/udev/85-usbmuxd.rules.in @@ -0,0 +1,7 @@ +# usbmuxd (iPhone "Apple Mobile Device" MUXer listening on /var/run/usbmuxd) + +# Forces iPhone 1.0, 3G, 3GS and iPodTouch 1 and 2 to USB configuration 3 and run usbmuxd +ACTION=="add", SUBSYSTEM=="usb", ATTR{idVendor}=="05ac", ATTR{idProduct}=="129[0-4]", ATTR{bConfigurationValue}!="$attr{bNumConfigurations}", ATTR{bConfigurationValue}="$attr{bNumConfigurations}", RUN+="@CMAKE_INSTALL_PREFIX@/sbin/usbmuxd -u -U" + +# Exit usbmuxd when the last phone is removed +ACTION=="remove", SUBSYSTEM=="usb", ENV{PRODUCT}=="5ac/129[0-4]/*", ENV{INTERFACE}=="255/*", RUN+="@CMAKE_INSTALL_PREFIX@/sbin/usbmuxd -x" diff --git a/udev/CMakeLists.txt b/udev/CMakeLists.txt new file mode 100644 index 0000000..0f7042d --- /dev/null +++ b/udev/CMakeLists.txt @@ -0,0 +1,2 @@ +CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/85-usbmuxd.rules.in ${CMAKE_CURRENT_BINARY_DIR}/85-usbmuxd.rules @ONLY) +install(FILES ${CMAKE_CURRENT_BINARY_DIR}/85-usbmuxd.rules DESTINATION /lib/udev/rules.d/) diff --git a/usbmuxd/.gitignore b/usbmuxd/.gitignore deleted file mode 100644 index 0784410..0000000 --- a/usbmuxd/.gitignore +++ /dev/null @@ -1,3 +0,0 @@ -*~ -build - diff --git a/usbmuxd/CMakeLists.txt b/usbmuxd/CMakeLists.txt index 8d22ef6..b982dc0 100644 --- a/usbmuxd/CMakeLists.txt +++ b/usbmuxd/CMakeLists.txt @@ -1,16 +1,9 @@ -PROJECT(usbmuxd) - -cmake_minimum_required(VERSION 2.6) - -set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/Modules/") - find_package(USB REQUIRED) include_directories(${USB_INCLUDE_DIRS}) set(LIBS ${LIBS} ${USB_LIBRARIES}) -#set(CMAKE_VERBOSE_MAKEFILE ON) - add_definitions(-Wall -O2 -g) add_executable(usbmuxd main.c usb-linux.c log.c utils.c device.c client.c) target_link_libraries(usbmuxd ${LIBS}) +install(TARGETS usbmuxd RUNTIME DESTINATION sbin)
\ No newline at end of file diff --git a/usbmuxd/main.c b/usbmuxd/main.c index 6fe6688..dde99c2 100644 --- a/usbmuxd/main.c +++ b/usbmuxd/main.c @@ -328,7 +328,7 @@ static void parse_opts(int argc, char **argv) int c; while (1) { - c = getopt_long(argc, argv, "hfvdu::xX", longopts, (int *) 0); + c = getopt_long(argc, argv, "hfvuU::xX", longopts, (int *) 0); if (c == -1) { break; } |