tsol_getrhent.c revision 2830:5228d1267a01 
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 <netdb.h>
29#include "ldap_common.h"
30#include <sys/types.h>
31#include <sys/socket.h>
32#include <netinet/in.h>
33#include <arpa/inet.h>
34#include <sys/tsol/tndb.h>
35
36/* tnrhdb attributes filters */
37#define	_TNRHDB_ADDR		"ipTnetNumber"
38#define	_TNRHDB_TNAME		"ipTnetTemplateName"
39#define	_F_GETTNDBBYADDR	"(&(objectClass=ipTnetHost)(ipTnetNumber=%s))"
40#define	_F_GETTNDBBYADDR_SSD	"(&(%%s)(ipTnetNumber=%s))"
41
42static const char *tnrhdb_attrs[] = {
43	_TNRHDB_ADDR,
44	_TNRHDB_TNAME,
45	NULL
46};
47
48static void
49escape_colon(char *in, char *out) {
50	int i, j;
51	for (i = 0, j = 0; in[i] != '\0'; i++) {
52		if (in[i] == ':') {
53			out[j++] = '\\';
54			out[j++] = in[i];
55		} else
56			out[j++] = in[i];
57	}
58	out[j] = '\0';
59}
60
61/*
62 * _nss_ldap_tnrhdb2str is the data marshaling method for the tnrhdb
63 * (tsol_getrhbyaddr()/tsol_getrhent()) backend processes.
64 * This method is called after a successful ldap search has been performed.
65 * This method will parse the ldap search values into the file format.
66 *
67 * e.g.
68 *
69 * 192.168.120.6:public
70 * fec0\:\:a00\:20ff\:fea0\:21f7:cipso
71 *
72 */
73static int
74_nss_ldap_tnrhdb2str(ldap_backend_ptr be, nss_XbyY_args_t *argp)
75{
76	int			nss_result = NSS_STR_PARSE_SUCCESS;
77	int			len = 0;
78	char			*buffer = NULL;
79	char			**addr, **template, *addr_out;
80	ns_ldap_result_t	*result = be->result;
81	char addr6[INET6_ADDRSTRLEN + 5]; /* 5 '\' for ':' at most */
82
83	if (result == NULL)
84		return (NSS_STR_PARSE_PARSE);
85
86	addr = __ns_ldap_getAttr(result->entry, _TNRHDB_ADDR);
87	if (addr == NULL || addr[0] == NULL || (strlen(addr[0]) < 1)) {
88		nss_result = NSS_STR_PARSE_PARSE;
89		goto result_tnrhdb2str;
90	}
91
92	/*
93	 * Escape ':' in IPV6.
94	 * The value is stored in LDAP directory without escape charaters.
95	 */
96	if (strchr(addr[0], ':') != NULL) {
97		escape_colon(addr[0], addr6);
98		addr_out = addr6;
99	} else
100		addr_out = addr[0];
101
102	template = __ns_ldap_getAttr(result->entry, _TNRHDB_TNAME);
103	if (template == NULL || template[0] == NULL ||
104			(strlen(template[0]) < 1)) {
105		nss_result = NSS_STR_PARSE_PARSE;
106		goto result_tnrhdb2str;
107	}
108	/* "addr:template" */
109	len = strlen(addr_out) + strlen(template[0]) + 2;
110
111	if (argp->buf.result != NULL) {
112		if ((be->buffer = calloc(1, len)) == NULL) {
113			nss_result = NSS_STR_PARSE_PARSE;
114			goto result_tnrhdb2str;
115		}
116		be->buflen = len - 1;
117		buffer = be->buffer;
118	} else
119		buffer = argp->buf.buffer;
120
121	(void) snprintf(buffer, len, "%s:%s", addr_out, template[0]);
122
123result_tnrhdb2str:
124	(void) __ns_ldap_freeResult(&be->result);
125	return (nss_result);
126}
127
128
129static nss_status_t
130getbyaddr(ldap_backend_ptr be, void *a)
131{
132	char		searchfilter[SEARCHFILTERLEN];
133	char		userdata[SEARCHFILTERLEN];
134	nss_XbyY_args_t	*argp = (nss_XbyY_args_t *)a;
135
136	if (argp->key.hostaddr.addr == NULL ||
137		(argp->key.hostaddr.type != AF_INET &&
138		argp->key.hostaddr.type != AF_INET6))
139			return (NSS_NOTFOUND);
140	if (strchr(argp->key.hostaddr.addr, ':') != NULL) {
141		/* IPV6 */
142		if (argp->key.hostaddr.type == AF_INET)
143			return (NSS_NOTFOUND);
144	} else {
145		/* IPV4 */
146		if (argp->key.hostaddr.type == AF_INET6)
147			return (NSS_NOTFOUND);
148	}
149
150	/*
151	 * The IPV6 addresses are saved in the directory without '\'s.
152	 * So don't need to escape colons in IPV6 addresses.
153	 */
154	if (snprintf(searchfilter, sizeof (searchfilter), _F_GETTNDBBYADDR,
155	    argp->key.hostaddr.addr) < 0)
156		return ((nss_status_t)NSS_NOTFOUND);
157
158	if (snprintf(userdata, sizeof (userdata), _F_GETTNDBBYADDR_SSD,
159	    argp->key.hostaddr.addr) < 0)
160		return ((nss_status_t)NSS_NOTFOUND);
161
162	return (_nss_ldap_lookup(be, argp, _TNRHDB, searchfilter, NULL,
163	    _merge_SSD_filter, userdata));
164}
165
166
167static ldap_backend_op_t tnrhdb_ops[] = {
168	_nss_ldap_destr,
169	_nss_ldap_endent,
170	_nss_ldap_setent,
171	_nss_ldap_getent,
172	getbyaddr
173};
174
175
176/* ARGSUSED */
177nss_backend_t *
178_nss_ldap_tnrhdb_constr(const char *dummy1,
179    const char *dummy2,
180    const char *dummy3,
181    const char *dummy4,
182    const char *dummy5)
183{
184	return ((nss_backend_t *)_nss_ldap_constr(tnrhdb_ops,
185		sizeof (tnrhdb_ops)/sizeof (tnrhdb_ops[0]), _TNRHDB,
186		tnrhdb_attrs, _nss_ldap_tnrhdb2str));
187}
188