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 <netinet/in.h>
30 #include <arpa/inet.h>
31 #include <sys/socket.h>
32 #include "ldap_common.h"
33
34 /* netmasks attributes filters */
35 #define _N_NETWORK "ipnetworknumber"
36 #define _N_NETMASK "ipnetmasknumber"
37
38 #define _F_GETMASKBYNET "(&(objectClass=ipNetwork)(ipNetworkNumber=%s))"
39 #define _F_GETMASKBYNET_SSD "(&(%%s)(ipNetworkNumber=%s))"
40
41 static const char *netmasks_attrs[] = {
42 _N_NETWORK,
43 _N_NETMASK,
44 (char *)NULL
45 };
46
47
48 /*
49 * _nss_ldap_netmasks2str is the data marshaling method for the netmasks
50 * getXbyY * (e.g., getnetmaskby[net|addr]()) backend processes.
51 * This method is called after a successful ldap search has been performed.
52 * This method will parse the ldap search values into the file format.
53 *
54 * getnetmaskbykey set argp->buf.buffer to NULL and argp->buf.buflen to 0
55 * and argp->buf.result to non-NULL.
56 * The front end marshaller str2add expects "netmask" only
57 *
58 * e.g.
59 *
60 * 255.255.255.0
61 *
62 *
63 */
64
65 static int
_nss_ldap_netmasks2str(ldap_backend_ptr be,nss_XbyY_args_t * argp)66 _nss_ldap_netmasks2str(ldap_backend_ptr be, nss_XbyY_args_t *argp)
67 {
68 int nss_result, len;
69 ns_ldap_result_t *result = be->result;
70 char *buffer, **netmask;
71
72 if (result == NULL)
73 return (NSS_STR_PARSE_PARSE);
74
75 nss_result = NSS_STR_PARSE_SUCCESS;
76
77 netmask = __ns_ldap_getAttr(result->entry, _N_NETMASK);
78 if (netmask == NULL || netmask[0] == NULL ||
79 (strlen(netmask[0]) < 1)) {
80 nss_result = NSS_STR_PARSE_PARSE;
81 goto result_nmks2str;
82 }
83 /* Add a trailing null for debugging purpose */
84 len = strlen(netmask[0]) + 1;
85 if (argp->buf.result != NULL) {
86 if ((be->buffer = calloc(1, len)) == NULL) {
87 nss_result = NSS_STR_PARSE_PARSE;
88 goto result_nmks2str;
89 }
90 be->buflen = len - 1;
91 buffer = be->buffer;
92 } else
93 buffer = argp->buf.buffer;
94
95
96 (void) snprintf(buffer, len, "%s", netmask[0]);
97
98 result_nmks2str:
99
100 (void) __ns_ldap_freeResult(&be->result);
101 return ((int)nss_result);
102 }
103
104 /*
105 * getbynet gets a network mask by address. This function constructs an
106 * ldap search filter using the netmask name invocation parameter and the
107 * getmaskbynet search filter defined. Once the filter is constructed, we
108 * search for a matching entry and marshal the data results into struct
109 * in_addr for the frontend process. The function _nss_ldap_netmasks2ent
110 * performs the data marshaling.
111 */
112
113 static nss_status_t
getbynet(ldap_backend_ptr be,void * a)114 getbynet(ldap_backend_ptr be, void *a)
115 {
116 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
117 char searchfilter[SEARCHFILTERLEN];
118 char userdata[SEARCHFILTERLEN];
119 char netnumber[SEARCHFILTERLEN];
120 int ret;
121
122 if (_ldap_filter_name(netnumber, argp->key.name, sizeof (netnumber))
123 != 0)
124 return ((nss_status_t)NSS_NOTFOUND);
125 ret = snprintf(searchfilter, sizeof (searchfilter),
126 _F_GETMASKBYNET, netnumber);
127 if (ret >= sizeof (searchfilter) || ret < 0)
128 return ((nss_status_t)NSS_NOTFOUND);
129
130 ret = snprintf(userdata, sizeof (userdata),
131 _F_GETMASKBYNET_SSD, netnumber);
132 if (ret >= sizeof (userdata) || ret < 0)
133 return ((nss_status_t)NSS_NOTFOUND);
134
135 return ((nss_status_t)_nss_ldap_lookup(be, argp,
136 _NETMASKS, searchfilter, NULL,
137 _merge_SSD_filter, userdata));
138 }
139
140
141 static ldap_backend_op_t netmasks_ops[] = {
142 _nss_ldap_destr,
143 getbynet
144 };
145
146
147 /*
148 * _nss_ldap_netmasks_constr is where life begins. This function calls
149 * the generic ldap constructor function to define and build the abstract
150 * data types required to support ldap operations.
151 */
152
153 /*ARGSUSED0*/
154 nss_backend_t *
_nss_ldap_netmasks_constr(const char * dummy1,const char * dummy2,const char * dummy3)155 _nss_ldap_netmasks_constr(const char *dummy1, const char *dummy2,
156 const char *dummy3)
157 {
158
159 return ((nss_backend_t *)_nss_ldap_constr(netmasks_ops,
160 sizeof (netmasks_ops)/sizeof (netmasks_ops[0]), _NETMASKS,
161 netmasks_attrs, _nss_ldap_netmasks2str));
162 }
163