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 2006 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28/*	  All Rights Reserved  	*/
29
30
31#pragma ident	"%Z%%M%	%I%	%E% SMI"
32/* EMACS_MODES: !fill, lnumb, !overwrite, !nodelete, !picture */
33
34#include "stdio.h"
35#include "string.h"
36#include "errno.h"
37#include "sys/types.h"
38#include <syslog.h>
39
40#include "lp.h"
41#include "class.h"
42
43/**
44 ** getclass() - READ CLASS FROM TO DISK
45 **/
46
47CLASS *
48getclass(char *name)
49{
50	static long		lastdir		= -1;
51
52	CLASS		*clsp;
53
54	char			*file,
55				buf[BUFSIZ];
56
57	int fd;
58
59	syslog(LOG_DEBUG, "getclass(%s)", name ? name : "");
60
61	if (!name || !*name) {
62		errno = EINVAL;
63		return (0);
64	}
65
66	/*
67	 * Getting ``all''? If so, jump into the directory
68	 * wherever we left off.
69	 */
70	if (STREQU(NAME_ALL, name)) {
71		if (!(name = next_file(Lp_A_Classes, &lastdir)))
72			return (0);
73	} else
74		lastdir = -1;
75
76	/*
77	 * Get the class list.
78	 */
79
80	if (!(file = getclassfile(name)))
81		return (0);
82
83	if ((fd = open_locked(file, "r", 0)) < 0) {
84		Free (file);
85		return (0);
86	}
87	Free (file);
88
89	clsp = (CLASS *)calloc(sizeof (*clsp), 1);
90
91	if (!(clsp->name = Strdup(name))) {
92		Free (clsp);
93		close(fd);
94		errno = ENOMEM;
95		return (0);
96	}
97
98	clsp->members = 0;
99	errno = 0;
100	while (fdgets(buf, BUFSIZ, fd)) {
101		buf[strlen(buf) - 1] = 0;
102		addlist (&clsp->members, buf);
103	}
104	if (errno != 0) {
105		int			save_errno = errno;
106
107		freelist (clsp->members);
108		Free (clsp->name);
109		Free (clsp);
110		close(fd);
111		errno = save_errno;
112		return (0);
113	}
114	close(fd);
115
116	if (!clsp->members) {
117		Free (clsp->name);
118		Free (clsp);
119		errno = EBADF;
120		return (0);
121	}
122
123	return (clsp);
124}
125