Subversion Repositories freemyipod

//

//

//    Copyright 2011 user890104

//

//

//    This file is part of ipoddfu.

//

//    ipoddfu 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.

//

//    ipoddfu 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 ipoddfu.  If not, see <http://www.gnu.org/licenses/>.

//

//

#include <stdio.h>

#include <libusb-1.0/libusb.h>

#include "misc.h"

#include "usb.h"

libusb_context *usb_ctx = NULL;

libusb_device_handle *usb_handle = NULL;

int usb_init(void)

{

    int res;

    printf("Initialising USB library... ");

    res = libusb_init(&usb_ctx);

    if (LIBUSB_SUCCESS != res)

    {

        return res;

    }

    printf("OK\n");

#ifdef DEBUG

    libusb_set_debug(usb_ctx, 3);

#endif

    return LIBUSB_SUCCESS;

}

int usb_find(unsigned char *reattach)

{

    libusb_device **devs, *dev;

    ssize_t devs_cnt;

    int res, i;

    struct libusb_device_descriptor dev_desc;

    unsigned char found = 0;

    struct libusb_config_descriptor *cfg_desc;

    const struct libusb_interface *iface;

    const struct libusb_interface_descriptor *iface_desc;

    printf("Getting USB device list... ");

    devs_cnt = libusb_get_device_list(usb_ctx, &devs);

    if (devs_cnt < 0)

    {

        return devs_cnt;

    }

    printf("Found %Zd USB devices!\n", devs_cnt);

    for (i = 0; i < devs_cnt; ++i)

    {

        dev = devs[i];

        printf("Getting device descriptor of USB device %d...\n", i);

        res = libusb_get_device_descriptor(dev, &dev_desc);

        if (LIBUSB_SUCCESS != res)

        {

            fprintf(stderr, "Unable to get device descriptor of device %d!\n", i);

            continue;

        }

        printf("[%04x:%04x] bus %d, device %d, USB ver. %04x\n", dev_desc.idVendor,

            dev_desc.idProduct, libusb_get_bus_number(dev),

            libusb_get_device_address(dev), dev_desc.bcdUSB);

        if (0x05ac == dev_desc.idVendor && (

            // DFU

            0x1220 == dev_desc.idProduct || // iPod Nano 2G

            0x1223 == dev_desc.idProduct || // iPod Classic 1G

            0x1224 == dev_desc.idProduct || // iPod Nano 3G

            0x1225 == dev_desc.idProduct || // iPod Nano 4G

            0x1231 == dev_desc.idProduct || // iPod Nano 5G

            0x1232 == dev_desc.idProduct || // iPod Nano 6G

            0x1233 == dev_desc.idProduct || // iPod Shuffle 4G

            // WTF

            0x1240 == dev_desc.idProduct || // iPod Nano 2G

            0x1241 == dev_desc.idProduct || // iPod Classic 1G

            0x1242 == dev_desc.idProduct || // iPod Nano 3G

            0x1243 == dev_desc.idProduct || // iPod Nano 4G

            0x1245 == dev_desc.idProduct || // iPod Classic 2G

            0x1246 == dev_desc.idProduct || // iPod Nano 5G

            0x1247 == dev_desc.idProduct || // iPod Classic 3G

            0x1248 == dev_desc.idProduct    // iPod Nano 6G

        ))

        {

            printf("Found DFU USB device!\n");

            if (1 != dev_desc.bNumConfigurations)

            {

                fprintf(stderr, "Number of configs is different than 1, not the right device...\n");

                continue;

            }

            printf("Getting config descriptor 0 of device...\n");

            res = libusb_get_config_descriptor(dev, 0, &cfg_desc);

            if (LIBUSB_SUCCESS != res)

            {

                return res;

            }

            if (1 != cfg_desc->bNumInterfaces)

            {

                fprintf(stderr, "Wrong USB device, it should have exactly 1 interface\n");

                continue;

            }

            iface = &cfg_desc->interface[0];

            if (1 != iface->num_altsetting)

            {

                fprintf(stderr, "Wrong USB device, it should have exactly 1 altsetting\n");

                continue;

            }

            iface_desc = &iface->altsetting[0];

            if (0 != iface_desc->bNumEndpoints)

            {

                fprintf(stderr, "Wrong USB device, it should have no endpoints\n");

                continue;

            }

            found = 1;

            break;

        }

    }

    if (found)

    {

        res = usb_open(dev, reattach);

    }

    else

    {

        fprintf(stderr, "DFU USB device not found!\n");

        res = 1; // not found

    }

    printf("Freeing device list...\n");

    libusb_free_device_list(devs, 1);

    return res;

}

int usb_open(libusb_device *dev, unsigned char *reattach)

{

    int res;

    printf("Opening USB device... ");

    res = libusb_open(dev, &usb_handle);

    if (LIBUSB_SUCCESS != res)

    {

        return res;

    }

    printf("OK\n");

    printf("Setting USB configuration 1... ");

    res = libusb_set_configuration(usb_handle, 1);

    if (LIBUSB_SUCCESS != res)

    {

        return res;

    }

    printf("OK\n");

    res = libusb_kernel_driver_active(usb_handle, 0);

    if (1 == res)

    {

        printf("Kernel driver active, detaching... ");

        *reattach = 1;

        res = libusb_detach_kernel_driver(usb_handle, 0);

        if (LIBUSB_SUCCESS == res)

        {

            printf("OK\n");

        }

    }

    if (LIBUSB_SUCCESS != res)

    {

        return res;

    }

    printf("Claiming interface 0... ");

    res = libusb_claim_interface(usb_handle, 0);

    if (LIBUSB_SUCCESS != res)

    {

        return res;

    }

    printf("OK\n");

    return LIBUSB_SUCCESS;

}

int usb_bulk_transfer(const unsigned char endpoint, unsigned char *data, const unsigned int length)

{

    int transferred;

    int res;

    res = libusb_bulk_transfer(usb_handle, endpoint, data, length, &transferred, 30000);

    if (LIBUSB_SUCCESS != res)

    {

        return res;

    }

    if ((unsigned int) transferred != length)

    {

        return 2; // incomplete

    }

    return LIBUSB_SUCCESS;

}

int usb_control_transfer(uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, unsigned char *data, uint16_t wLength)

{

    int res;

    res = libusb_control_transfer(usb_handle, bmRequestType, bRequest, wValue, wIndex, data, wLength, 30000);

    if (LIBUSB_SUCCESS != res)

    {

        return res;

    }

    return LIBUSB_SUCCESS;

}

int usb_close(const unsigned char reattach)

{

    int res;

    printf("Releasing USB interface... ");

    res = libusb_release_interface(usb_handle, 0);

    if (LIBUSB_SUCCESS != res)

    {

        return res;

    }

    printf("OK\n");

    if (reattach)

    {

        printf("Reattaching kernel driver... ");

        res = libusb_attach_kernel_driver(usb_handle, 0);

        if (LIBUSB_SUCCESS == res)

        {

            printf("OK\n");

        }

        else

        {

            printf("\n");

            print_error(res);

            res = LIBUSB_SUCCESS;

        }

    }

    printf("Closing USB device handle...\n");

    libusb_close(usb_handle);

    return res;

}

void usb_exit(void)

{

    printf("Deinitializing USB library...\n");

    libusb_exit(usb_ctx);

}