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 "ldap_common.h"
29
30 /* bootparams attributes filters */
31 #define _B_HOSTNAME "cn"
32 #define _B_PARAMETER "bootparameter"
33 #define _F_GETBOOTPARAMBYNAME "(&(objectClass=bootableDevice)(cn=%s))"
34 #define _F_GETBOOTPARAMBYNAME_SSD "(&(%%s)(cn=%s))"
35
36 static const char *bootparams_attrs[] = {
37 _B_HOSTNAME,
38 _B_PARAMETER,
39 (char *)NULL
40 };
41
42 /*
43 * _nss_ldap_bootparams2str is the data marshaling method for the
44 * bootparams bootparams_getbyname backend processes.
45 * This method is called after a successful ldap search has been performed.
46 * This method will parse the ldap search values into the file format.
47 *
48 * A host's bootparameters are returned on one line separated by white
49 * space. The LDAP server stores each boot parameter as a separate entry.
50 * If more than one bootparameter is available, a white space separated buffer
51 * must be constructed and returned.
52 *
53 */
54
55 static int
_nss_ldap_bootparams2str(ldap_backend_ptr be,nss_XbyY_args_t * argp)56 _nss_ldap_bootparams2str(ldap_backend_ptr be, nss_XbyY_args_t *argp)
57 {
58 uint_t i;
59 int buflen = 0, len = 0;
60 int nss_result, firsttime;
61 ns_ldap_attr_t *bparams;
62 char *buffer, **names;
63 ns_ldap_result_t *result = be->result;
64
65 if (result == NULL)
66 return (NSS_STR_PARSE_PARSE);
67 buflen = argp->buf.buflen;
68 if (argp->buf.result != NULL) {
69 if ((be->buffer = calloc(1, buflen)) == NULL) {
70 nss_result = NSS_STR_PARSE_PARSE;
71 goto result_bp2str;
72 }
73 buffer = be->buffer;
74 } else
75 buffer = argp->buf.buffer;
76
77 nss_result = NSS_STR_PARSE_SUCCESS;
78 (void) memset(argp->buf.buffer, 0, buflen);
79
80 names = __ns_ldap_getAttr(result->entry, _B_HOSTNAME);
81 if (names == NULL || names[0] == NULL ||
82 (strlen(names[0]) < 1)) {
83 nss_result = NSS_STR_PARSE_PARSE;
84 goto result_bp2str;
85 }
86 bparams = __ns_ldap_getAttrStruct(result->entry, _B_PARAMETER);
87 if (bparams == NULL || bparams->attrvalue == NULL) {
88 nss_result = NSS_STR_PARSE_PARSE;
89 goto result_bp2str;
90 }
91 firsttime = 1;
92 for (i = 0; i < bparams->value_count; i++) {
93 if (bparams->attrvalue[i] == NULL) {
94 nss_result = NSS_STR_PARSE_PARSE;
95 goto result_bp2str;
96 }
97 /*
98 * Skip client host name. The early version of ldapaddent
99 * adds hostname as a boot param and it should be filtered.
100 */
101 if (strcasecmp(names[0], bparams->attrvalue[i]) != 0) {
102 if (firsttime) {
103 firsttime = 0;
104 len = snprintf(buffer, buflen, "%s",
105 bparams->attrvalue[i]);
106 } else
107 len = snprintf(buffer, buflen, " %s",
108 bparams->attrvalue[i]);
109 TEST_AND_ADJUST(len, buffer, buflen, result_bp2str);
110 }
111 }
112 /* The front end marshaller doesn't need to copy trailing nulls */
113 if (argp->buf.result != NULL)
114 be->buflen = strlen(be->buffer);
115
116 result_bp2str:
117
118 (void) __ns_ldap_freeResult(&be->result);
119 return (nss_result);
120 }
121
122 /*
123 * getbyname gets bootparameters by host name. This function constructs an
124 * ldap search filter using the host name invocation parameter and the
125 * getbootparambyname search filter defined. Once the filter is
126 * constructed, we search for matching entries and marshal the data
127 * results into argp->buf.buffer for the frontend process. The function
128 * _nss_ldap_bootparams2ent performs the data marshaling.
129 *
130 * RFC 2307, An Approach for Using LDAP as a Network Information Service,
131 * indicates that dn's be fully qualified. Host name searches will be on
132 * fully qualified host names (e.g., foo.bar.sun.com).
133 */
134
135 static nss_status_t
getbyname(ldap_backend_ptr be,void * a)136 getbyname(ldap_backend_ptr be, void *a)
137 {
138 char hostname[3 * MAXHOSTNAMELEN];
139 nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
140 char searchfilter[SEARCHFILTERLEN];
141 char userdata[SEARCHFILTERLEN];
142 int ret;
143
144 if (_ldap_filter_name(hostname, argp->key.name, sizeof (hostname)) != 0)
145 return ((nss_status_t)NSS_NOTFOUND);
146
147 ret = snprintf(searchfilter, sizeof (searchfilter),
148 _F_GETBOOTPARAMBYNAME, hostname);
149 if (ret >= sizeof (searchfilter) || ret < 0)
150 return ((nss_status_t)NSS_NOTFOUND);
151
152 ret = snprintf(userdata, sizeof (userdata),
153 _F_GETBOOTPARAMBYNAME_SSD, hostname);
154 if (ret >= sizeof (userdata) || ret < 0)
155 return ((nss_status_t)NSS_NOTFOUND);
156 return ((nss_status_t)_nss_ldap_lookup(be, argp,
157 _BOOTPARAMS, searchfilter, NULL,
158 _merge_SSD_filter, userdata));
159 }
160
161
162 static ldap_backend_op_t bootparams_ops[] = {
163 _nss_ldap_destr,
164 getbyname
165 };
166
167
168 /*
169 * _nss_ldap_bootparams_constr is where life begins. This function calls
170 * the generic ldap constructor function to define and build the abstract
171 * data types required to support ldap operations.
172 */
173
174 /*ARGSUSED0*/
175 nss_backend_t *
_nss_ldap_bootparams_constr(const char * dummy1,const char * dummy2,const char * dummy3)176 _nss_ldap_bootparams_constr(const char *dummy1, const char *dummy2,
177 const char *dummy3)
178 {
179
180 return ((nss_backend_t *)_nss_ldap_constr(bootparams_ops,
181 sizeof (bootparams_ops)/sizeof (bootparams_ops[0]),
182 _BOOTPARAMS, bootparams_attrs, _nss_ldap_bootparams2str));
183 }
184