xref: /onnv-gate/usr/src/cmd/mailx/getname.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23*0Sstevel@tonic-gate /*	  All Rights Reserved  	*/
24*0Sstevel@tonic-gate 
25*0Sstevel@tonic-gate 
26*0Sstevel@tonic-gate /*
27*0Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
28*0Sstevel@tonic-gate  * The Regents of the University of California
29*0Sstevel@tonic-gate  * All Rights Reserved
30*0Sstevel@tonic-gate  *
31*0Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
32*0Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
33*0Sstevel@tonic-gate  * contributors.
34*0Sstevel@tonic-gate  */
35*0Sstevel@tonic-gate 
36*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
37*0Sstevel@tonic-gate 
38*0Sstevel@tonic-gate /*
39*0Sstevel@tonic-gate  * mailx -- a modified version of a University of California at Berkeley
40*0Sstevel@tonic-gate  *	mail program
41*0Sstevel@tonic-gate  */
42*0Sstevel@tonic-gate 
43*0Sstevel@tonic-gate #include "rcv.h"
44*0Sstevel@tonic-gate #include <pwd.h>
45*0Sstevel@tonic-gate #ifdef preSVr4
46*0Sstevel@tonic-gate extern struct passwd *getpwnam();
47*0Sstevel@tonic-gate extern struct passwd *getpwuid();
48*0Sstevel@tonic-gate #endif
49*0Sstevel@tonic-gate 
50*0Sstevel@tonic-gate /*
51*0Sstevel@tonic-gate  * Search the passwd file for a uid.  Return name through ref parameter
52*0Sstevel@tonic-gate  * if found, indicating success with 0 return.  Return -1 on error.
53*0Sstevel@tonic-gate  * If -1 is passed as the user id, close the passwd file.
54*0Sstevel@tonic-gate  */
55*0Sstevel@tonic-gate 
56*0Sstevel@tonic-gate int
getname(uid_t uid,char namebuf[])57*0Sstevel@tonic-gate getname(uid_t uid, char namebuf[])
58*0Sstevel@tonic-gate {
59*0Sstevel@tonic-gate 	struct passwd *pw;
60*0Sstevel@tonic-gate 
61*0Sstevel@tonic-gate 	if (uid == (uid_t)-1) {
62*0Sstevel@tonic-gate 		endpwent();
63*0Sstevel@tonic-gate 		return(0);
64*0Sstevel@tonic-gate 	}
65*0Sstevel@tonic-gate 	setpwent();
66*0Sstevel@tonic-gate 	pw = getpwuid(uid);
67*0Sstevel@tonic-gate 	if (pw) {
68*0Sstevel@tonic-gate 		strcpy(namebuf, pw->pw_name);
69*0Sstevel@tonic-gate 		return(0);
70*0Sstevel@tonic-gate 	}
71*0Sstevel@tonic-gate 	return(-1);
72*0Sstevel@tonic-gate }
73*0Sstevel@tonic-gate 
74*0Sstevel@tonic-gate /*
75*0Sstevel@tonic-gate  * Convert the passed name to a user id and return it.  Return -1
76*0Sstevel@tonic-gate  * on error.  Iff the name passed is 0, close the passwd file.
77*0Sstevel@tonic-gate  */
78*0Sstevel@tonic-gate 
79*0Sstevel@tonic-gate uid_t
getuserid(char name[])80*0Sstevel@tonic-gate getuserid(char name[])
81*0Sstevel@tonic-gate {
82*0Sstevel@tonic-gate 	struct passwd *pw;
83*0Sstevel@tonic-gate 
84*0Sstevel@tonic-gate 	if (name == 0) {
85*0Sstevel@tonic-gate 		endpwent();
86*0Sstevel@tonic-gate 		return(0);
87*0Sstevel@tonic-gate 	}
88*0Sstevel@tonic-gate 	setpwent();
89*0Sstevel@tonic-gate 	pw = getpwnam(name);
90*0Sstevel@tonic-gate 	return pw ? pw->pw_uid : (uid_t)-1;
91*0Sstevel@tonic-gate }
92