usr/src/usr.bin/mail/getname.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)getname.c   5.1 (Berkeley) %G%";
#endif not lint

#include <pwd.h>

/*
 * Getname / getuserid for those with
 * hashed passwd data base).
 *
 */

#include "rcv.h"

/*
 * Search the passwd file for a uid.  Return name through ref parameter
 * if found, indicating success with 0 return.  Return -1 on error.
 * If -1 is passed as the user id, close the passwd file.
 */

getname(uid, namebuf)
        char namebuf[];
{
        struct passwd *pw;

        if (uid == -1) {
                return(0);
        }
        if ((pw = getpwuid(uid)) == NULL)
                return(-1);
        strcpy(namebuf, pw->pw_name);
        return 0;
}

/*
 * Convert the passed name to a user id and return it.  Return -1
 * on error.  Iff the name passed is -1 (yech) close the pwfile.
 */

getuserid(name)
        char name[];
{
        struct passwd *pw;

        if (name == (char *) -1) {
                return(0);
        }
        if ((pw = getpwnam(name)) == NULL)
                return 0;
        return pw->pw_uid;
}