#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>


static void usage(void) __dead;


static
void usage(void)
{

	fprintf(stderr, "usage: %s key setting\n", getprogname());
	exit(EXIT_FAILURE);
}


/*
 * Given key and setting, crypt() and exit accordingly.
 *
 * E.g.
 *
 *  % pwhash foo
 *  $sha1$23904$hkGTbI3q$UKMPDSL97/MCUOatY.s0WM./hxtw
 *  % crypt bar '$sha1$23904$hkGTbI3q$UKMPDSL97/MCUOatY.s0WM./hxtw'
 *  Exit 1
 *  % crypt foo '$sha1$23904$hkGTbI3q$UKMPDSL97/MCUOatY.s0WM./hxtw'
 */
int
main(int argc, char *argv[])
{

	if (argc != 3)
		usage();

	return (strcmp(argv[2], crypt(argv[1], argv[2])) != 0);
}