1 /*
2 * Copyright (c) 1997-2014 Erez Zadok
3 * Copyright (c) 1989 Jan-Simon Pendry
4 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1989 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *
36 * File: am-utils/amd/info_nisplus.c
37 *
38 */
39
40 /*
41 * Get info from NIS+ (version 3) map
42 */
43
44 #ifdef HAVE_CONFIG_H
45 # include <config.h>
46 #endif /* HAVE_CONFIG_H */
47 #include <am_defs.h>
48 #include <amd.h>
49 #include <sun_map.h>
50
51 #define NISPLUS_KEY "key="
52 #define NISPLUS_ORGDIR ".org_dir"
53
54 struct nis_callback_data {
55 mnt_map *ncd_m;
56 char *ncd_map;
57 void (*ncd_fn)();
58 };
59
60 struct nisplus_search_callback_data {
61 nis_name key;
62 char *value;
63 };
64
65
66 static int
nisplus_callback(const nis_name key,const nis_object * value,voidp opaquedata)67 nisplus_callback(const nis_name key, const nis_object *value, voidp opaquedata)
68 {
69 char *kp = strnsave(ENTRY_VAL(value, 0), ENTRY_LEN(value, 0));
70 char *vp = strnsave(ENTRY_VAL(value, 1), ENTRY_LEN(value, 1));
71 struct nis_callback_data *data = (struct nis_callback_data *) opaquedata;
72
73 dlog("NISplus callback for <%s,%s>", kp, vp);
74
75 (*data->ncd_fn) (data->ncd_m, kp, vp);
76
77 /*
78 * We want more ...
79 */
80 return FALSE;
81 }
82
83
84 int
nisplus_reload(mnt_map * m,char * map,void (* fn)())85 nisplus_reload(mnt_map *m, char *map, void (*fn) ())
86 {
87 int error = 0;
88 struct nis_callback_data data;
89 nis_result *result;
90 char *org; /* if map does not have ".org_dir" then append it */
91 nis_name map_name;
92 size_t l;
93
94 org = strstr(map, NISPLUS_ORGDIR);
95 if (org == NULL)
96 org = NISPLUS_ORGDIR;
97 else
98 org = "";
99
100 /* make some room for the NIS map_name */
101 l = strlen(map) + sizeof(NISPLUS_ORGDIR);
102 map_name = xmalloc(l);
103 if (map_name == NULL) {
104 plog(XLOG_ERROR, "Unable to create map_name %s: %s",
105 map, strerror(ENOMEM));
106 return ENOMEM;
107 }
108 xsnprintf(map_name, l, "%s%s", map, org);
109
110 data.ncd_m = m;
111 data.ncd_map = map_name;
112 data.ncd_fn = fn;
113
114 dlog("NISplus reload for %s", map);
115
116 result = nis_list(map_name,
117 EXPAND_NAME | FOLLOW_LINKS | FOLLOW_PATH,
118 (int (*)()) nisplus_callback,
119 &data);
120
121 /* free off the NIS map_name */
122 XFREE(map_name);
123
124 if (result->status != NIS_SUCCESS && result->status != NIS_CBRESULTS)
125 error = 1;
126
127 if (error)
128 plog(XLOG_ERROR, "error grabbing nisplus map of %s: %s",
129 map,
130 nis_sperrno(result->status));
131
132 nis_freeresult(result);
133 return error;
134 }
135
136
137 static int
nisplus_search_callback(const nis_name key,const nis_object * value,voidp opaquedata)138 nisplus_search_callback(const nis_name key, const nis_object *value, voidp opaquedata)
139 {
140 struct nisplus_search_callback_data *data = (struct nisplus_search_callback_data *) opaquedata;
141
142 dlog("NISplus search callback for <%s>", ENTRY_VAL(value, 0));
143 dlog("NISplus search callback value <%s>", ENTRY_VAL(value, 1));
144
145 data->value = strnsave(ENTRY_VAL(value, 1), ENTRY_LEN(value, 1));
146 return TRUE;
147 }
148
149
150 /*
151 * Try to locate a key using NIS+.
152 */
153 int
nisplus_search(mnt_map * m,char * map,char * key,char ** val,time_t * tp)154 nisplus_search(mnt_map *m, char *map, char *key, char **val, time_t *tp)
155 {
156 nis_result *result;
157 int error = 0;
158 struct nisplus_search_callback_data data;
159 nis_name index;
160 char *org; /* if map does not have ".org_dir" then append it */
161 size_t l;
162
163 org = strstr(map, NISPLUS_ORGDIR);
164 if (org == NULL)
165 org = NISPLUS_ORGDIR;
166 else
167 org = "";
168
169 /* make some room for the NIS index */
170 l = sizeof('[') /* for opening selection criteria */
171 + sizeof(NISPLUS_KEY)
172 + strlen(key)
173 + sizeof(']') /* for closing selection criteria */
174 + sizeof(',') /* + 1 for , separator */
175 + strlen(map)
176 + sizeof(NISPLUS_ORGDIR);
177 index = xmalloc(l);
178 if (index == NULL) {
179 plog(XLOG_ERROR,
180 "Unable to create index %s: %s",
181 map,
182 strerror(ENOMEM));
183 return ENOMEM;
184 }
185 xsnprintf(index, l, "[%s%s],%s%s", NISPLUS_KEY, key, map, org);
186
187 data.key = key;
188 data.value = NULL;
189
190 dlog("NISplus search for %s", index);
191
192 result = nis_list(index,
193 EXPAND_NAME | FOLLOW_LINKS | FOLLOW_PATH,
194 (int (*)()) nisplus_search_callback,
195 &data);
196
197 /* free off the NIS index */
198 XFREE(index);
199
200 if (result == NULL) {
201 plog(XLOG_ERROR, "nisplus_search: %s: %s", map, strerror(ENOMEM));
202 return ENOMEM;
203 }
204
205 /*
206 * Do something interesting with the return code
207 */
208 switch (result->status) {
209 case NIS_SUCCESS:
210 case NIS_CBRESULTS:
211
212 if (data.value == NULL) {
213 nis_object *value = result->objects.objects_val;
214 dlog("NISplus search found <nothing>");
215 dlog("NISplus search for %s: %s(%d)",
216 map, nis_sperrno(result->status), result->status);
217
218 if (value != NULL)
219 data.value = strnsave(ENTRY_VAL(value, 1), ENTRY_LEN(value, 1));
220 }
221
222 if (m->cfm && (m->cfm->cfm_flags & CFM_SUN_MAP_SYNTAX)) {
223 *val = sun_entry2amd(key, data.value);
224 XFREE(data.value); /* strnsave malloc'ed it above */
225 } else
226 *val = data.value;
227
228 if (*val) {
229 error = 0;
230 dlog("NISplus search found %s", *val);
231 } else {
232 error = ENOENT;
233 dlog("NISplus search found nothing");
234 }
235
236 *tp = 0;
237 break;
238
239 case NIS_NOSUCHNAME:
240 dlog("NISplus search returned %d", result->status);
241 error = ENOENT;
242 break;
243
244 default:
245 plog(XLOG_ERROR, "nisplus_search: %s: %s", map, nis_sperrno(result->status));
246 error = EIO;
247 break;
248 }
249 nis_freeresult(result);
250
251 return error;
252 }
253
254
255 int
nisplus_init(mnt_map * m,char * map,time_t * tp)256 nisplus_init(mnt_map *m, char *map, time_t *tp)
257 {
258 nis_result *result;
259 char *org; /* if map does not have ".org_dir" then append it */
260 nis_name map_name;
261 int error = 0;
262 size_t l;
263
264 org = strstr(map, NISPLUS_ORGDIR);
265 if (org == NULL)
266 org = NISPLUS_ORGDIR;
267 else
268 org = "";
269
270 /* make some room for the NIS map_name */
271 l = strlen(map) + sizeof(NISPLUS_ORGDIR);
272 map_name = xmalloc(l);
273 if (map_name == NULL) {
274 plog(XLOG_ERROR,
275 "Unable to create map_name %s: %s",
276 map,
277 strerror(ENOMEM));
278 return ENOMEM;
279 }
280 xsnprintf(map_name, l, "%s%s", map, org);
281
282 result = nis_lookup(map_name, (EXPAND_NAME | FOLLOW_LINKS | FOLLOW_PATH));
283
284 /* free off the NIS map_name */
285 XFREE(map_name);
286
287 if (result == NULL) {
288 plog(XLOG_ERROR, "NISplus init <%s>: %s", map, strerror(ENOMEM));
289 return ENOMEM;
290 }
291
292 if (result->status != NIS_SUCCESS) {
293 dlog("NISplus init <%s>: %s (%d)",
294 map, nis_sperrno(result->status), result->status);
295
296 error = ENOENT;
297 }
298
299 *tp = 0; /* no time */
300 nis_freeresult(result);
301 return error;
302 }
303
304
305 int
nisplus_mtime(mnt_map * m,char * map,time_t * tp)306 nisplus_mtime(mnt_map *m, char *map, time_t *tp)
307 {
308 return nisplus_init(m,map, tp);
309 }
310