nss_printer.c revision 2847:05bae185f48c 
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 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28#include <stdio.h>
29#include <string.h>
30#include <ctype.h>
31#include <sys/types.h>
32#include <nss_dbdefs.h>
33#include <syslog.h>
34#include <ns.h>
35
36#ifndef	NSS_DBNAM__PRINTERS	/* not in nss_dbdefs.h because it's private */
37#define	NSS_DBNAM__PRINTERS	"_printers"
38#endif
39
40static DEFINE_NSS_DB_ROOT(db_root);
41static DEFINE_NSS_GETENT(context);
42
43static int printers_stayopen;
44static char *private_ns = NULL;
45
46static void
47_nss_initf_printers(p)
48    nss_db_params_t *p;
49{
50	if (private_ns != NULL) {
51		/*
52		 * because we need to support a legacy interface that allows
53		 * us to select a specific name service, we need to dummy up
54		 * the parameters to use a private nsswitch database and set
55		 * the * default_config entry to the name service we are
56		 * looking into.
57		 */
58		p->name = NSS_DBNAM__PRINTERS;		/* "_printers" */
59		p->default_config = normalize_ns_name(private_ns);
60	} else {
61		/* regular behaviour */
62		p->name = NSS_DBNAM_PRINTERS;	 /* "printers" */
63		p->default_config = NSS_DEFCONF_PRINTERS;
64	}
65	syslog(LOG_DEBUG, "database: %s, default: %s",
66		(p->name ? p->name : "NULL"),
67		(p->default_config ? p->default_config : "NULL"));
68}
69
70/*
71 * Return values: 0 = success, 1 = parse error, 2 = erange ...
72 * The structure pointer passed in is a structure in the caller's space
73 * wherein the field pointers would be set to areas in the buffer if
74 * need be. instring and buffer should be separate areas.
75 */
76/* ARGSUSED */
77static int
78str2printer(const char *instr, int lenstr, void *ent, char *buffer, int buflen)
79{
80	if (lenstr + 1 > buflen)
81		return (NSS_STR_PARSE_ERANGE);
82
83	/* skip entries that begin with '#' */
84	if (instr[0] == '#')
85		return (NSS_STR_PARSE_PARSE);
86
87	/*
88	 * We copy the input string into the output buffer
89	 */
90	(void) memcpy(buffer, instr, lenstr);
91	buffer[lenstr] = '\0';
92
93	return (NSS_STR_PARSE_SUCCESS);
94}
95
96
97int
98setprinterentry(int stayopen, char *ns)
99{
100	printers_stayopen |= stayopen;
101	private_ns = ns;
102	nss_setent(&db_root, _nss_initf_printers, &context);
103	private_ns = NULL;
104	return (0);
105}
106
107
108int
109endprinterentry()
110{
111	printers_stayopen = 0;
112	nss_endent(&db_root, _nss_initf_printers, &context);
113	nss_delete(&db_root);
114	private_ns = NULL;
115	return (0);
116}
117
118
119/* ARGSUSED2 */
120int
121getprinterentry(char *linebuf, int linelen, char *ns)
122{
123	nss_XbyY_args_t arg;
124	nss_status_t	res;
125
126	private_ns = ns;
127	NSS_XbyY_INIT(&arg, linebuf, linebuf, linelen, str2printer);
128	res = nss_getent(&db_root, _nss_initf_printers, &context, &arg);
129	(void) NSS_XbyY_FINI(&arg);
130	private_ns = NULL;
131
132	return (arg.status = res);
133}
134
135
136int
137getprinterbyname(char *name, char *linebuf, int linelen, char *ns)
138{
139	nss_XbyY_args_t arg;
140	nss_status_t	res;
141
142	private_ns = ns;
143	NSS_XbyY_INIT(&arg, linebuf, linebuf, linelen, str2printer);
144	arg.key.name = name;
145	res = nss_search(&db_root, _nss_initf_printers,
146			NSS_DBOP_PRINTERS_BYNAME, &arg);
147	(void) NSS_XbyY_FINI(&arg);
148	private_ns = NULL;
149
150	return (arg.status = res);
151}
152