/*
 * set id
 */

#include <stdlib.h>
#include <stdio.h>
#include <errno.h>

#include <unistd.h>
#include <sys/types.h>
#include <pwd.h>

#include <grp.h>

       int getgrouplist(const char *user, gid_t group,
                        gid_t *groups, int *ngroups);



#include "exec.c"
#if 0
#include "die.c"
#endif

/*
 * chids <uid> cmd... run command as uid, gid from passwd
 * chids <uid:gid> cmd run command as uid, gid
 * chids <uid:> cmd run command as uid, gid from passwd,groups
 */
int main(int ac, char *av[]) {
	struct passwd *pw;
	uid_t uid;

	uid = geteuid();

	pw = getpwnam(av[1]);
	if (!pw) {
		perror("getpwnam");
		exit(EXIT_FAILURE);
	}

	if (uid == 0 && setgroups(0,0) == -1) {
		perror("setgroups");
		exit(EXIT_FAILURE);
	};

	if (setgid(pw->pw_gid) == -1) {
		perror("setgid");
		exit(EXIT_FAILURE);
	};

	if (setuid(pw->pw_uid) == -1) {
		perror("setuid");
		exit(EXIT_FAILURE);
	};

	do_exec(2, ac, av);

	/* shouldn't get here... */
	return EXIT_FAILURE;
}