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693 user890104 1 
#include <stdio.h>
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#include <libusb-1.0/libusb.h>
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#include "misc.h"
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const char *libusb_error_messages[13] = {
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	"No error",					/* LIBUSB_SUCCESS = 0 */
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	"Input/output error",		/* LIBUSB_ERROR_IO = -1 */
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	"Invalid parameter",		/* LIBUSB_ERROR_INVALID_PARAM = -2 */
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	"Access denied",			/* LIBUSB_ERROR_ACCESS = -3 */
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	"No such device",			/* LIBUSB_ERROR_NO_DEVICE = -4 */
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	"Entity not found",			/* LIBUSB_ERROR_NOT_FOUND = -5 */
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	"Resource busy",			/* LIBUSB_ERROR_BUSY = -6 */
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	"Operation timed out",		/* LIBUSB_ERROR_TIMEOUT = -7 */
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	"Overflow",					/* LIBUSB_ERROR_OVERFLOW = -8 */
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	"Pipe error",				/* LIBUSB_ERROR_PIPE = -9 */
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	"System call interrupted",	/* LIBUSB_ERROR_INTERRUPTED = -10 */
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	"Insufficient memory",		/* LIBUSB_ERROR_NO_MEM = -11 */
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	"Operation not supported",	/* LIBUSB_ERROR_NOT_SUPPORTED = -12 */
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};
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long int fgetsize(FILE *fp) {
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	static long int pos, size;
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	if (-1L == (pos = ftell(fp))) {
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		perror("ftell");
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		return -1L;
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	}
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	if(fseek(fp, 0L, SEEK_END)) {
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		perror("fseek");
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		return -1L;
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	}
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	if (-1L == (size = ftell(fp))) {
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		perror("ftell");
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		return -1L;
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	}
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	if (fseek(fp, pos, SEEK_SET)) {
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		perror("fseek");
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		return -1L;
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	}
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	return size;
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}
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void dump_packet(const unsigned char *data, const unsigned int length) {
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	static unsigned int i;
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	for (i = 0; i < length; ++i) {
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		printf("%02x ", data[i]);
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		if (i % 4 == 3) {
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			printf(" ");
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		}
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		if (i % 16 == 15 && i + 1 < length) {
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			printf("\n");
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		}
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	}
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	printf("\n");
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}
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void print_error(const int code) {
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	if (code > 0) {
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		fprintf(stderr, "error: code %d\n", code);
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	}
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	else {
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		fprintf(stderr, "libusb error: %s (code %d)\n", (
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			LIBUSB_ERROR_OTHER == code || code > 0 ?
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				"unspecified" :
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				libusb_error_messages[-code]
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		), code);
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	}
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}