2 * Copyright (c) 2005 Michael Bushkov <bushman@rsu.ru>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/types.h>
41 static int group_marshal_func(struct group *, char *, size_t *);
42 static int group_lookup_func(const char *, size_t, char **, size_t *);
43 static void *group_mp_init_func();
44 static int group_mp_lookup_func(char **, size_t *, void *);
45 static void group_mp_destroy_func(void *);
48 group_marshal_func(struct group *grp, char *buffer, size_t *buffer_size)
51 size_t desired_size, size, mem_size;
54 TRACE_IN(group_marshal_func);
55 desired_size = ALIGNBYTES + sizeof(struct group) + sizeof(char *);
57 if (grp->gr_name != NULL)
58 desired_size += strlen(grp->gr_name) + 1;
59 if (grp->gr_passwd != NULL)
60 desired_size += strlen(grp->gr_passwd) + 1;
62 if (grp->gr_mem != NULL) {
64 for (mem = grp->gr_mem; *mem; ++mem) {
65 desired_size += strlen(*mem) + 1;
69 desired_size += ALIGNBYTES + (mem_size + 1) * sizeof(char *);
72 if ((desired_size > *buffer_size) || (buffer == NULL)) {
73 *buffer_size = desired_size;
74 TRACE_OUT(group_marshal_func);
78 memcpy(&new_grp, grp, sizeof(struct group));
79 memset(buffer, 0, desired_size);
81 *buffer_size = desired_size;
82 p = buffer + sizeof(struct group) + sizeof(char *);
83 memcpy(buffer + sizeof(struct group), &p, sizeof(char *));
86 if (new_grp.gr_name != NULL) {
87 size = strlen(new_grp.gr_name);
88 memcpy(p, new_grp.gr_name, size);
93 if (new_grp.gr_passwd != NULL) {
94 size = strlen(new_grp.gr_passwd);
95 memcpy(p, new_grp.gr_passwd, size);
96 new_grp.gr_passwd = p;
100 if (new_grp.gr_mem != NULL) {
101 p = (char *)ALIGN(p);
102 memcpy(p, new_grp.gr_mem, sizeof(char *) * mem_size);
103 new_grp.gr_mem = (char **)p;
104 p += sizeof(char *) * (mem_size + 1);
106 for (mem = new_grp.gr_mem; *mem; ++mem) {
108 memcpy(p, *mem, size);
114 memcpy(buffer, &new_grp, sizeof(struct group));
115 TRACE_OUT(group_marshal_func);
120 group_lookup_func(const char *key, size_t key_size, char **buffer,
123 enum nss_lookup_type lookup_type;
128 struct group *result;
130 TRACE_IN(group_lookup_func);
131 assert(buffer != NULL);
132 assert(buffer_size != NULL);
134 if (key_size < sizeof(enum nss_lookup_type)) {
135 TRACE_OUT(group_lookup_func);
138 memcpy(&lookup_type, key, sizeof(enum nss_lookup_type));
140 switch (lookup_type) {
142 size = key_size - sizeof(enum nss_lookup_type) + 1;
143 name = (char *)calloc(1, size);
144 assert(name != NULL);
145 memcpy(name, key + sizeof(enum nss_lookup_type), size - 1);
148 if (key_size < sizeof(enum nss_lookup_type) +
150 TRACE_OUT(passwd_lookup_func);
154 memcpy(&gid, key + sizeof(enum nss_lookup_type), sizeof(gid_t));
157 TRACE_OUT(group_lookup_func);
161 switch (lookup_type) {
164 result = getgrnam(name);
168 result = getgrgid(gid);
171 /* SHOULD NOT BE REACHED */
175 if (result != NULL) {
176 group_marshal_func(result, NULL, buffer_size);
177 *buffer = (char *)malloc(*buffer_size);
178 assert(*buffer != NULL);
179 group_marshal_func(result, *buffer, buffer_size);
182 TRACE_OUT(group_lookup_func);
183 return (result == NULL ? NS_NOTFOUND : NS_SUCCESS);
189 TRACE_IN(group_mp_init_func);
191 TRACE_OUT(group_mp_init_func);
197 group_mp_lookup_func(char **buffer, size_t *buffer_size, void *mdata)
199 struct group *result;
201 TRACE_IN(group_mp_lookup_func);
203 if (result != NULL) {
204 group_marshal_func(result, NULL, buffer_size);
205 *buffer = (char *)malloc(*buffer_size);
206 assert(*buffer != NULL);
207 group_marshal_func(result, *buffer, buffer_size);
210 TRACE_OUT(group_mp_lookup_func);
211 return (result == NULL ? NS_NOTFOUND : NS_SUCCESS);
215 group_mp_destroy_func(void *mdata)
217 TRACE_IN(group_mp_destroy_func);
218 TRACE_OUT(group_mp_destroy_func);
224 struct common_agent *retval;
226 TRACE_IN(init_group_agent);
227 retval = (struct common_agent *)calloc(1, sizeof(struct common_agent));
228 assert(retval != NULL);
230 retval->parent.name = strdup("group");
231 assert(retval->parent.name != NULL);
233 retval->parent.type = COMMON_AGENT;
234 retval->lookup_func = group_lookup_func;
236 TRACE_OUT(init_group_agent);
237 return ((struct agent *)retval);
241 init_group_mp_agent()
243 struct multipart_agent *retval;
245 TRACE_IN(init_group_mp_agent);
246 retval = (struct multipart_agent *)calloc(1,
247 sizeof(struct multipart_agent));
248 assert(retval != NULL);
250 retval->parent.name = strdup("group");
251 retval->parent.type = MULTIPART_AGENT;
252 retval->mp_init_func = group_mp_init_func;
253 retval->mp_lookup_func = group_mp_lookup_func;
254 retval->mp_destroy_func = group_mp_destroy_func;
255 assert(retval->parent.name != NULL);
257 TRACE_OUT(init_group_mp_agent);
258 return ((struct agent *)retval);