xref: /titanic_50/usr/src/cmd/getent/dogetpw.c (revision 3eae19d9cf3390cf5b75e10c9c1945fd36ad856a)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 #pragma ident	"%Z%%M%	%I%	%E% SMI"
23 
24 /*
25  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
26  * Use is subject to license terms.
27  */
28 
29 #include <stdio.h>
30 #include <pwd.h>
31 #include <stdlib.h>
32 #include <errno.h>
33 #include "getent.h"
34 
35 /*
36  * getpwnam - get entries from password database
37  */
38 int
39 dogetpw(const char **list)
40 {
41 	struct passwd *pwp;
42 	int rc = EXC_SUCCESS;
43 	char *ptr;
44 	uid_t uid;
45 
46 
47 	if (list == NULL || *list == NULL) {
48 		while ((pwp = getpwent()) != NULL)
49 			(void) putpwent(pwp, stdout);
50 	} else {
51 		for (; *list != NULL; list++) {
52 			errno = 0;
53 
54 			/*
55 			 * Here we assume that the argument passed is
56 			 * a uid, if it can be completely transformed
57 			 * to a long integer. So we check for uid in
58 			 * the database and if we fail then we check
59 			 * for the user name.
60 			 * If the argument passed is not numeric, then
61 			 * we take it as the user name and proceed.
62 			 */
63 			uid = strtol(*list, &ptr, 10);
64 			if (!(*ptr == '\0' && errno == 0) ||
65 			    ((pwp = getpwuid(uid)) == NULL)) {
66 				pwp = getpwnam(*list);
67 			}
68 
69 			if (pwp == NULL)
70 				rc = EXC_NAME_NOT_FOUND;
71 			else
72 				(void) putpwent(pwp, stdout);
73 		}
74 	}
75 
76 	return (rc);
77 }
78