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 <sys/types.h>
29 #include <sys/socket.h>
30 #include <net/if.h>
31 #include <netinet/in.h>
32 #include <net/if_arp.h>
33 #include <netinet/if_ether.h>
34 #include "ldap_common.h"
35
36 /* ether attributes filters */
37 #define _E_HOSTNAME "cn"
38 #define _E_MACADDRESS "macaddress"
39 #define _F_GETETHERBYHOST "(&(objectClass=ieee802Device)(cn=%s))"
40 #define _F_GETETHERBYHOST_SSD "(&(%%s)(cn=%s))"
41 #define _F_GETETHERBYETHER "(&(objectClass=ieee802Device)(macAddress=%s))"
42 #define _F_GETETHERBYETHER_SSD "(&(%%s)(macAddress=%s))"
43
44 static const char *ethers_attrs[] = {
45 _E_HOSTNAME,
46 _E_MACADDRESS,
47 (char *)NULL
48 };
49
50 /*
51 * _nss_ldap_ethers2str is the data marshaling method for the ethers
52 * ether_hostton/ether_ntohost backend processes.
53 * This method is called after a successful ldap search has been performed.
54 * This method will parse the ldap search values into the file format.
55 * e.g.
56 *
57 * 8:0:20:8e:eb:8a8 borealis
58 *
59 * The front end marshaller str2ether uses argp->buf.result for a different
60 * purpose so a flag be->db_type is set to work around this oddity.
61 *
62 */
63 /*ARGSUSED0*/
64 static int
_nss_ldap_ethers2str(ldap_backend_ptr be,nss_XbyY_args_t * argp)65 _nss_ldap_ethers2str(ldap_backend_ptr be, nss_XbyY_args_t *argp)
66 {
67 int nss_result;
68 ns_ldap_result_t *result = be->result;
69 char **host, **macaddress;
70
71 if (result == NULL)
72 return (NSS_STR_PARSE_PARSE);
73 nss_result = NSS_STR_PARSE_SUCCESS;
74
75 host = __ns_ldap_getAttr(result->entry, _E_HOSTNAME);
76 if (host == NULL || host[0] == NULL || (strlen(host[0]) < 1)) {
77 nss_result = NSS_STR_PARSE_PARSE;
78 goto result_ea2str;
79 }
80 macaddress = __ns_ldap_getAttr(result->entry, _E_MACADDRESS);
81 if (macaddress == NULL || macaddress[0] == NULL ||
82 (strlen(macaddress[0]) < 1)) {
83 nss_result = NSS_STR_PARSE_PARSE;
84 goto result_ea2str;
85 }
86 be->buflen = strlen(host[0]) + strlen(macaddress[0]) + 1; /* ' ' */
87 /* Add a trailing null for easy debug */
88 be->buffer = calloc(1, be->buflen + 1);
89 if (be->buffer == NULL) {
90 nss_result = NSS_STR_PARSE_PARSE;
91 goto result_ea2str;
92 }
93
94 (void) snprintf(be->buffer, be->buflen + 1, "%s %s",
95 macaddress[0], host[0]);
96 be->db_type = NSS_LDAP_DB_ETHERS;
97
98 result_ea2str:
99
100 (void) __ns_ldap_freeResult(&be->result);
101 return (nss_result);
102 }
103
104 /*
105 * getbyhost gets an ethernet address by hostname. This function
106 * constructs an ldap search filter using the hostname invocation
107 * parameter and the getetherbyhost search filter defined. Once
108 * the filter is constructed, we search for a matching entry and
109 * marshal the data results into uchar_t *ether for the frontend
110 * process. The function _nss_ldap_ethers2ent performs the data
111 * marshaling.
112 *
113 * RFC 2307, An Approach for Using LDAP as a Network Information Service,
114 * indicates that dn's be fully qualified. Host name searches will be on
115 * fully qualified host names (e.g., foo.bar.sun.com).
116 */
117
118 static nss_status_t
getbyhost(ldap_backend_ptr be,void * a)119 getbyhost(ldap_backend_ptr be, void *a)
120 {
121 char hostname[3 * MAXHOSTNAMELEN];
122 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
123 char searchfilter[SEARCHFILTERLEN];
124 char userdata[SEARCHFILTERLEN];
125 int ret;
126 nss_status_t rc;
127
128 if (_ldap_filter_name(hostname, argp->key.name, sizeof (hostname)) != 0)
129 return ((nss_status_t)NSS_NOTFOUND);
130
131 ret = snprintf(searchfilter, sizeof (searchfilter),
132 _F_GETETHERBYHOST, hostname);
133
134 if (ret >= sizeof (searchfilter) || ret < 0)
135 return ((nss_status_t)NSS_NOTFOUND);
136
137 ret = snprintf(userdata, sizeof (userdata),
138 _F_GETETHERBYHOST_SSD, hostname);
139
140 if (ret >= sizeof (userdata) || ret < 0)
141 return ((nss_status_t)NSS_NOTFOUND);
142
143 rc = (nss_status_t)_nss_ldap_lookup(be, argp,
144 _ETHERS, searchfilter, NULL,
145 _merge_SSD_filter, userdata);
146
147 return (rc);
148 }
149
150
151 /*
152 * getbyether gets an ethernet address by ethernet address. This
153 * function constructs an ldap search filter using the ASCII
154 * ethernet address invocation parameter and the getetherbyether
155 * search filter defined. Once the filter is constructed, we
156 * search for a matching entry and marshal the data results into
157 * uchar_t *ether for the frontend process. The function
158 * _nss_ldap_ethers2ent performs the data marshaling.
159 */
160
161 static nss_status_t
getbyether(ldap_backend_ptr be,void * a)162 getbyether(ldap_backend_ptr be, void *a)
163 {
164 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
165 char etherstr[18];
166 uchar_t *e = argp->key.ether;
167 char searchfilter[SEARCHFILTERLEN];
168 char userdata[SEARCHFILTERLEN];
169 int ret;
170
171 ret = snprintf(etherstr, sizeof (etherstr), "%x:%x:%x:%x:%x:%x",
172 *e, *(e + 1), *(e + 2), *(e + 3), *(e + 4), *(e + 5));
173 if (ret >= sizeof (etherstr) || ret < 0)
174 return ((nss_status_t)NSS_NOTFOUND);
175
176 ret = snprintf(searchfilter, sizeof (searchfilter),
177 _F_GETETHERBYETHER, etherstr);
178 if (ret >= sizeof (searchfilter) || ret < 0)
179 return ((nss_status_t)NSS_NOTFOUND);
180
181 ret = snprintf(userdata, sizeof (userdata),
182 _F_GETETHERBYETHER_SSD, etherstr);
183 if (ret >= sizeof (userdata) || ret < 0)
184 return ((nss_status_t)NSS_NOTFOUND);
185
186 return ((nss_status_t)_nss_ldap_lookup(be, argp,
187 _ETHERS, searchfilter, NULL,
188 _merge_SSD_filter, userdata));
189 }
190
191
192 static ldap_backend_op_t ethers_ops[] = {
193 _nss_ldap_destr,
194 getbyhost,
195 getbyether
196 };
197
198
199 /*
200 * _nss_ldap_ethers_constr is where life begins. This function calls the
201 * generic ldap constructor function to define and build the abstract
202 * data types required to support ldap operations.
203 */
204
205 /*ARGSUSED0*/
206 nss_backend_t *
_nss_ldap_ethers_constr(const char * dummy1,const char * dummy2,const char * dummy3)207 _nss_ldap_ethers_constr(const char *dummy1, const char *dummy2,
208 const char *dummy3)
209 {
210
211 return ((nss_backend_t *)_nss_ldap_constr(ethers_ops,
212 sizeof (ethers_ops)/sizeof (ethers_ops[0]), _ETHERS,
213 ethers_attrs, _nss_ldap_ethers2str));
214 }
215