grupd.c revision 20302 
1/*-
2 * Copyright (C) 1996
3 *	David L. Nugent.  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 *
14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id: grupd.c,v 1.1.1.1 1996/12/09 14:05:35 joerg Exp $
27 */
28
29#include <stdio.h>
30#include <stdlib.h>
31#include <string.h>
32#include <unistd.h>
33#include <stdarg.h>
34#include <errno.h>
35#include <sys/types.h>
36#include <sys/stat.h>
37
38#include "pwupd.h"
39
40int
41fmtgrentry(char *buf, struct group * grp, int type)
42{
43	int             i, l;
44
45	if (type == PWF_STANDARD)
46		l = sprintf(buf, "%s:*:%ld:", grp->gr_name, (long) grp->gr_gid);
47	else
48		l = sprintf(buf, "%s:%s:%ld:", grp->gr_name, grp->gr_passwd, (long) grp->gr_gid);
49
50	/*
51	 * Now, list members
52	 */
53	for (i = 0; i < 200 && grp->gr_mem[i]; i++)
54		l += sprintf(buf + l, "%s%s", i ? "," : "", grp->gr_mem[i]);
55	buf[l++] = '\n';
56	buf[l] = '\0';
57	return l;
58}
59
60
61int
62fmtgrent(char *buf, struct group * grp)
63{
64	return fmtgrentry(buf, grp, PWF_STANDARD);
65}
66
67
68static int
69gr_update(struct group * grp, char const * group, int mode)
70{
71	int             l;
72	char            pfx[32];
73	char            grbuf[MAXPWLINE];
74
75	endgrent();
76	l = sprintf(pfx, "%s:", group);
77
78	/*
79	 * Update the group file
80	 */
81	if (grp == NULL)
82		*grbuf = '\0';
83	else
84		fmtgrentry(grbuf, grp, PWF_PASSWD);
85	return fileupdate(_PATH_GROUP, 0644, grbuf, pfx, l, mode);
86}
87
88
89int
90addgrent(struct group * grp)
91{
92	return gr_update(grp, grp->gr_name, UPD_CREATE);
93}
94
95int
96chggrent(char const * login, struct group * grp)
97{
98	return gr_update(grp, login, UPD_REPLACE);
99}
100
101int
102delgrent(struct group * grp)
103{
104	return gr_update(NULL, grp->gr_name, UPD_DELETE);
105}
106