| /* |
| * iphone.c |
| * Functions for creating and initializing iPhone structures. |
| * |
| * Copyright (c) 2008 Zach C. All Rights Reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * 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 |
| */ |
| |
| #include "usbmux.h" |
| #include "iphone.h" |
| #include "utils.h" |
| #include <arpa/inet.h> |
| #include <usb.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| /** |
| * This function sets the configuration of the given device to 3 |
| * and claims the interface 1. If usb_set_configuration fails, it detaches |
| * the kernel driver that blocks the device, and retries configuration. |
| * |
| * @param phone which device to configure |
| */ |
| static void iphone_config_usb_device(iphone_device_t phone) |
| { |
| int ret; |
| int bytes; |
| unsigned char buf[512]; |
| |
| log_debug_msg("setting configuration... "); |
| ret = usb_set_configuration(phone->device, 3); |
| if (ret != 0) { |
| log_debug_msg("Hm, usb_set_configuration returned %d: %s, trying to fix:\n", ret, strerror(-ret)); |
| log_debug_msg("-> detaching kernel driver... "); |
| ret = |
| usb_detach_kernel_driver_np(phone->device, |
| phone->__device->config->interface->altsetting->bInterfaceNumber); |
| if (ret != 0) { |
| log_debug_msg("usb_detach_kernel_driver_np returned %d: %s\n", ret, strerror(-ret)); |
| } else { |
| log_debug_msg("done.\n"); |
| log_debug_msg("setting configuration again... "); |
| ret = usb_set_configuration(phone->device, 3); |
| if (ret != 0) { |
| log_debug_msg("Error: usb_set_configuration returned %d: %s\n", ret, strerror(-ret)); |
| } else { |
| log_debug_msg("done.\n"); |
| } |
| } |
| } else { |
| log_debug_msg("done.\n"); |
| } |
| |
| log_debug_msg("claiming interface... "); |
| ret = usb_claim_interface(phone->device, 1); |
| if (ret != 0) { |
| log_debug_msg("Error: usb_claim_interface returned %d: %s\n", ret, strerror(-ret)); |
| } else { |
| log_debug_msg("done.\n"); |
| } |
| |
| do { |
| bytes = usb_bulk_read(phone->device, BULKIN, (void *) &buf, 512, 800); |
| if (bytes > 0) { |
| log_debug_msg("iphone_config_usb_device: initial read returned %d bytes of data.\n", bytes); |
| log_debug_buffer(buf, bytes); |
| } |
| } while (bytes > 0); |
| } |
| |
| /** |
| * Given a USB bus and device number, returns a device handle to the iPhone on |
| * that bus. To aid compatibility with future devices, this function does not |
| * check the vendor and device IDs! To do that, you should use |
| * iphone_get_device() or a system-specific API (e.g. HAL). |
| * |
| * @param bus_n The USB bus number. |
| * @param dev_n The USB device number. |
| * @param device A pointer to a iphone_device_t, which must be set to NULL upon |
| * calling iphone_get_specific_device, which will be filled with a device |
| * descriptor on return. |
| * @return IPHONE_E_SUCCESS if ok, otherwise an error code. |
| */ |
| iphone_error_t iphone_get_specific_device(unsigned int bus_n, int dev_n, iphone_device_t * device) |
| { |
| struct usb_bus *bus, *busses; |
| struct usb_device *dev; |
| usbmux_version_header *version; |
| int bytes = 0; |
| |
| //check we can actually write in device |
| if (!device || (device && *device)) |
| return IPHONE_E_INVALID_ARG; |
| |
| iphone_device_t phone = (iphone_device_t) malloc(sizeof(struct iphone_device_int)); |
| |
| // Initialize the struct |
| phone->device = NULL; |
| phone->__device = NULL; |
| phone->buffer = NULL; |
| |
| // Initialize libusb |
| usb_init(); |
| usb_find_busses(); |
| usb_find_devices(); |
| busses = usb_get_busses(); |
| |
| // Set the device configuration |
| for (bus = busses; bus; bus = bus->next) |
| if (strtoul(bus->dirname, NULL, 10) == bus_n) |
| for (dev = bus->devices; dev != NULL; dev = dev->next) |
| if (strtol(dev->filename, NULL, 10) == dev_n) { |
| phone->__device = dev; |
| phone->device = usb_open(phone->__device); |
| iphone_config_usb_device(phone); |
| goto found; |
| } |
| |
| iphone_free_device(phone); |
| |
| log_debug_msg("iphone_get_specific_device: iPhone not found\n"); |
| return IPHONE_E_NO_DEVICE; |
| |
| found: |
| // Send the version command to the phone |
| version = version_header(); |
| bytes = usb_bulk_write(phone->device, BULKOUT, (char *) version, sizeof(*version), 800); |
| if (bytes < 20) { |
| log_debug_msg("get_iPhone(): libusb did NOT send enough!\n"); |
| if (bytes < 0) { |
| log_debug_msg("get_iPhone(): libusb gave me the error %d: %s (%s)\n", |
| bytes, usb_strerror(), strerror(-bytes)); |
| } |
| } |
| // Read the phone's response |
| bytes = usb_bulk_read(phone->device, BULKIN, (char *) version, sizeof(*version), 800); |
| |
| // Check for bad response |
| if (bytes < 20) { |
| free(version); |
| iphone_free_device(phone); |
| log_debug_msg("get_iPhone(): Invalid version message -- header too short.\n"); |
| if (bytes < 0) |
| log_debug_msg("get_iPhone(): libusb error message %d: %s (%s)\n", bytes, usb_strerror(), strerror(-bytes)); |
| return IPHONE_E_NOT_ENOUGH_DATA; |
| } |
| // Check for correct version |
| if (ntohl(version->major) == 1 && ntohl(version->minor) == 0) { |
| // We're all ready to roll. |
| log_debug_msg("get_iPhone() success\n"); |
| free(version); |
| *device = phone; |
| return IPHONE_E_SUCCESS; |
| } else { |
| // Bad header |
| log_debug_msg("get_iPhone(): Received a bad header/invalid version number.\n"); |
| log_debug_buffer((char *) version, sizeof(*version)); |
| iphone_free_device(phone); |
| free(version); |
| return IPHONE_E_BAD_HEADER; |
| } |
| |
| // If it got to this point it's gotta be bad |
| log_debug_msg("get_iPhone(): Unknown error.\n"); |
| iphone_free_device(phone); |
| free(version); |
| return IPHONE_E_UNKNOWN_ERROR; // if it got to this point it's gotta be bad |
| } |
| |
| /** |
| * Scans all USB busses and devices for a known AFC-compatible device and |
| * returns a handle to the first such device it finds. Known devices include |
| * those with vendor ID 0x05ac and product ID between 0x1290 and 0x1293 |
| * inclusive. |
| * |
| * This function is convenient, but on systems where higher-level abstractions |
| * (such as HAL) are available it may be preferable to use |
| * iphone_get_specific_device instead, because it can deal with multiple |
| * connected devices as well as devices not known to libiphone. |
| * |
| * @param device Upon calling this function, a pointer to a location of type |
| * iphone_device_t, which must have the value NULL. On return, this location |
| * will be filled with a handle to the device. |
| * @return IPHONE_E_SUCCESS if ok, otherwise an error code. |
| */ |
| iphone_error_t iphone_get_device(iphone_device_t * device) |
| { |
| struct usb_bus *bus; |
| struct usb_device *dev; |
| |
| usb_init(); |
| usb_find_busses(); |
| usb_find_devices(); |
| |
| for (bus = usb_get_busses(); bus != NULL; bus = bus->next) |
| for (dev = bus->devices; dev != NULL; dev = dev->next) |
| if (dev->descriptor.idVendor == 0x05ac |
| && dev->descriptor.idProduct >= 0x1290 && dev->descriptor.idProduct <= 0x1293) |
| return iphone_get_specific_device(strtoul(bus->dirname, NULL, 10), strtol(dev->filename, NULL, 10), device); |
| |
| return IPHONE_E_NO_DEVICE; |
| } |
| |
| /** Cleans up an iPhone structure, then frees the structure itself. |
| * This is a library-level function; deals directly with the iPhone to tear |
| * down relations, but otherwise is mostly internal. |
| * |
| * @param phone A pointer to an iPhone structure. |
| */ |
| iphone_error_t iphone_free_device(iphone_device_t device) |
| { |
| if (!device) |
| return IPHONE_E_INVALID_ARG; |
| iphone_error_t ret = IPHONE_E_UNKNOWN_ERROR; |
| int bytes; |
| unsigned char buf[512]; |
| |
| // read final package(s) |
| if (device->device != NULL) { |
| do { |
| bytes = usb_bulk_read(device->device, BULKIN, (void *) &buf, 512, 800); |
| if (bytes > 0) { |
| log_debug_msg("iphone_free_device: final read returned\n"); |
| log_debug_buffer(buf, bytes); |
| } |
| } while (bytes > 0); |
| } |
| |
| if (device->buffer) { |
| free(device->buffer); |
| } |
| if (device->device) { |
| usb_release_interface(device->device, 1); |
| usb_close(device->device); |
| ret = IPHONE_E_SUCCESS; |
| } |
| free(device); |
| return ret; |
| } |
| |
| /** Sends data to the phone |
| * This is a low-level (i.e. directly to phone) function. |
| * |
| * @param phone The iPhone to send data to |
| * @param data The data to send to the iPhone |
| * @param datalen The length of the data |
| * @return The number of bytes sent, or -1 on error or something. |
| */ |
| int send_to_phone(iphone_device_t phone, char *data, int datalen) |
| { |
| if (!phone) |
| return -1; |
| int bytes = 0; |
| |
| if (!phone) |
| return -1; |
| log_debug_msg("send_to_phone: Attempting to send datalen = %i data = %p\n", datalen, data); |
| |
| bytes = usb_bulk_write(phone->device, BULKOUT, data, datalen, 800); |
| if (bytes < datalen) { |
| if (bytes < 0) |
| log_debug_msg("send_to_iphone(): libusb gave me the error %d: %s - %s\n", bytes, usb_strerror(), |
| strerror(-bytes)); |
| return -1; |
| } else { |
| return bytes; |
| } |
| /* Should not be reached */ |
| return -1; |
| } |
| |
| /** This function is a low-level (i.e. direct to iPhone) function. |
| * |
| * @param phone The iPhone to receive data from |
| * @param data Where to put data read |
| * @param datalen How much data to read in |
| * @param timeout How many milliseconds to wait for data |
| * |
| * @return How many bytes were read in, or -1 on error. |
| */ |
| int recv_from_phone(iphone_device_t phone, char *data, int datalen, int timeout) |
| { |
| if (!phone) |
| return -1; |
| int bytes = 0; |
| |
| if (!phone) |
| return -1; |
| log_debug_msg("recv_from_phone(): attempting to receive %i bytes\n", datalen); |
| |
| bytes = usb_bulk_read(phone->device, BULKIN, data, datalen, timeout); |
| if (bytes < 0) { |
| log_debug_msg("recv_from_phone(): libusb gave me the error %d: %s (%s)\n", bytes, usb_strerror(), |
| strerror(-bytes)); |
| return -1; |
| } |
| |
| return bytes; |
| } |