xref: /illumos-gate/usr/src/cmd/getent/dogetpw.c (revision 4f364e7c95ee7fd9d5bbeddc1940e92405bb0e72)
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 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #include <stdio.h>
28 #include <pwd.h>
29 #include <stdlib.h>
30 #include <errno.h>
31 #include "getent.h"
32 
33 /*
34  * getpwnam - get entries from password database
35  */
36 int
37 dogetpw(const char **list)
38 {
39 	struct passwd *pwp;
40 	int rc = EXC_SUCCESS;
41 	char *ptr;
42 	uid_t uid;
43 
44 
45 	if (list == NULL || *list == NULL) {
46 		while ((pwp = getpwent()) != NULL)
47 			(void) putpwent(pwp, stdout);
48 	} else {
49 		for (; *list != NULL; list++) {
50 			errno = 0;
51 
52 			/*
53 			 * Here we assume that the argument passed is
54 			 * a uid, if it can be completely transformed
55 			 * to a long integer. So we check for uid in
56 			 * the database and if we fail then we check
57 			 * for the user name.
58 			 * If the argument passed is not numeric, then
59 			 * we take it as the user name and proceed.
60 			 */
61 			uid = strtoul(*list, &ptr, 10);
62 			if (!(*ptr == '\0' && errno == 0) ||
63 			    ((pwp = getpwuid(uid)) == NULL)) {
64 				pwp = getpwnam(*list);
65 			}
66 
67 			if (pwp == NULL)
68 				rc = EXC_NAME_NOT_FOUND;
69 			else
70 				(void) putpwent(pwp, stdout);
71 		}
72 	}
73 
74 	return (rc);
75 }
76