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693 user890104 1 
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <libusb-1.0/libusb.h>
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//
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//
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//    Copyright 2011 user890104
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//
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//
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//    This file is part of ipoddfu.
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//
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//    ipoddfu is free software: you can redistribute it and/or
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//    modify it under the terms of the GNU General Public License as
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//    published by the Free Software Foundation, either version 2 of the
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//    License, or (at your option) any later version.
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//
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//    ipoddfu is distributed in the hope that it will be useful,
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//    but WITHOUT ANY WARRANTY; without even the implied warranty of
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//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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//    See the GNU General Public License for more details.
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//
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//    You should have received a copy of the GNU General Public License along
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//    with ipoddfu.  If not, see <http://www.gnu.org/licenses/>.
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//
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//
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#include "usb.h"
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#include "dfu.h"
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#include "crc32.h"
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#include "misc.h"
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#include "ipoddfu.h"
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694 user890104 36 
int main(int argc, char *argv[])
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{
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    int res = 0;
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    unsigned char reattach = 0, *data;
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    FILE *fp;
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    long int size;
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    unsigned int checksum;
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    if (2 != argc)
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    {
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        fprintf(stderr, "usage: %s <file>\n", argv[0]);
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        return 1;
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    }
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    fp = fopen(argv[1], "r");
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    if (!fp)
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    {
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        perror("fopen");
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        return 1;
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    }
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    size = fgetsize(fp);
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    if (-1L == size)
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    {
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        return 1;
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    }
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    data = (unsigned char *) malloc(size + 4);
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    if ((unsigned long int) size != fread(data, sizeof(unsigned char), size, fp))
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    {
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        perror("fread");
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        return 1;
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    }
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    if (fclose(fp))
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    {
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        perror("fclose");
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        return 1;
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    }
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    crc32_init();
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    checksum = crc32(data, size, CRC32_DEFAULT_SEED);
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    memcpy(data + size, &checksum, 4);
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    res = usb_init();
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    if (LIBUSB_SUCCESS == res)
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    {
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        res = usb_find(&reattach);
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    }
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    if (LIBUSB_SUCCESS == res)
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    {
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        res = dfu_send((unsigned long int) size + 4, data);
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    }
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    if (data)
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    {
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        free(data);
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    }
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    if (0 != res)
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    {
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        print_error(res);
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    }
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    if (usb_handle)
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    {
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        usb_close(reattach);
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    }
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    if (usb_ctx)
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    {
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        usb_exit();
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    }
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    if (res < 0)
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    {
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        res = -res;
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    }
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    return res;
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}