#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <err.h>
#include <dev/usb/usb.h>
#include <cam/scsi/scsi_all.h>

void hexdump(unsigned char *p, int len) {
	int i, a;

	a = 0;
	while (len > 0) {
		printf("%04x ", a);
		for (i = 0; i < 16; i++) {
			if (i < len)
				printf(" %02x", p[i]);
			else
				printf("   ");
			if (i == 7)
				printf(" ");
		}
		printf("  ");
		for (i = 0; i < 16; i++) {
			if (i >= len)
				printf(" ");
			else if (p[i] >= 0x20 && p[i] < 0x80)
				printf("%c", p[i]);
			else
				printf(".");
		}
		printf("\n");
		a += 16;
		p += 16;
		len -= 16;
	}
}

int main(int argc, char **argv) {
	char *ugendev;
	int ctlpipe, outpipe, inpipe, intrpipe;
	char buf[100];
	int i, n;
	struct usb_ctl_request ur;
	struct scsi_inquiry inq;

	if (argc < 2)
		errx(1, "Usage: %s <ugen_device> [<timeout>]", argv[0]);
	ugendev = argv[1];

	snprintf(buf, sizeof(buf), "%s", ugendev);
	if ((ctlpipe = open(buf, O_RDWR)) < 0)
		err(1, "%s: open", buf);

	i = 1;
	if (argc > 2)
		i = atoi(argv[2]);
	if (ioctl(ctlpipe, USB_SET_TIMEOUT, &i) < 0)
		err(1, "USB_SET_TIMEOUT");

	bzero(&ur, sizeof(ur));
	ur.ucr_addr = 0;
	ur.ucr_request.bmRequestType = UT_WRITE_ENDPOINT;
	ur.ucr_request.bRequest = UR_CLEAR_FEATURE;
	USETW(ur.ucr_request.wValue, UF_ENDPOINT_HALT);
	USETW(ur.ucr_request.wIndex, 0);
	USETW(ur.ucr_request.wLength, 0);
	ur.ucr_data = buf;
	ur.ucr_flags = 0;
	ur.ucr_actlen = 0;
	if (ioctl(ctlpipe, USB_DO_REQUEST, &ur) < 0)
		err(1, "USB_DO_REQUEST");
	hexdump(buf, 0);

}