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getname.c revision 1.2 
      1 /*
      2  * Copyright (c) 1980 Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 /*static char sccsid[] = "from: @(#)getname.c	5.8 (Berkeley) 6/1/90";*/
     36 static char rcsid[] = "$Id: getname.c,v 1.2 1993/08/01 18:13:05 mycroft Exp $";
     37 #endif /* not lint */
     38 
     39 #include <sys/types.h>
     40 #include <pwd.h>
     41 
     42 /*
     43  * Getname / getuserid for those with
     44  * hashed passwd data base).
     45  *
     46  */
     47 
     48 #include "rcv.h"
     49 
     50 /*
     51  * Search the passwd file for a uid.  Return name through ref parameter
     52  * if found, indicating success with 0 return.  Return -1 on error.
     53  */
     54 char *
     55 getname(uid)
     56 {
     57 	struct passwd *pw;
     58 
     59 	if ((pw = getpwuid(uid)) == NULL)
     60 		return NOSTR;
     61 	return pw->pw_name;
     62 }
     63 
     64 /*
     65  * Convert the passed name to a user id and return it.  Return -1
     66  * on error.
     67  */
     68 getuserid(name)
     69 	char name[];
     70 {
     71 	struct passwd *pw;
     72 
     73 	if ((pw = getpwnam(name)) == NULL)
     74 		return -1;
     75 	return pw->pw_uid;
     76 }
     77