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getname.c

/*    $OpenBSD: getname.c,v 1.7 2003/06/03 02:56:11 millert Exp $ */
/*    $NetBSD: getname.c,v 1.4 1996/06/08 19:48:23 christos Exp $ */

/*
 * Copyright (c) 1980, 1993
 *    The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
#if 0
static const char sccsid[] = "@(#)getname.c     8.1 (Berkeley) 6/6/93";
#else
static const char rcsid[] = "$OpenBSD: getname.c,v 1.7 2003/06/03 02:56:11 millert Exp $";
#endif
#endif /* not lint */

#include "rcv.h"
#include <pwd.h>
#include "extern.h"

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

/*
 * Search the passwd file for a uid.  Return name on success, NULL on failure
 */
char *
getname(uid_t uid)
{
      struct passwd *pw;

      if ((pw = getpwuid(uid)) == NULL)
            return(NULL);
      return(pw->pw_name);
}

/*
 * Convert the passed name to a user id and return it.  Return -1
 * on error.
 */
uid_t
getuserid(char *name)
{
      struct passwd *pw;

      if ((pw = getpwnam(name)) == NULL)
            return(UID_MAX);
      return(pw->pw_uid);
}

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