1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
|
/*
ldb database library
Copyright (C) Andrew Tridgell 2004
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
** under the LGPL
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Name: ldb
*
* Component: ldb core API
*
* Description: core API routines interfacing to ldb backends
*
* Author: Andrew Tridgell
*/
#include "includes.h"
#include "ldb/include/ldb.h"
#include "ldb/include/ldb_errors.h"
#include "ldb/include/ldb_private.h"
/*
initialise a ldb context
The mem_ctx is optional
*/
struct ldb_context *ldb_init(void *mem_ctx)
{
struct ldb_context *ldb = talloc_zero(mem_ctx, struct ldb_context);
int ret;
ret = ldb_setup_wellknown_attributes(ldb);
if (ret != 0) {
talloc_free(ldb);
return NULL;
}
return ldb;
}
/*
connect to a database. The URL can either be one of the following forms
ldb://path
ldapi://path
flags is made up of LDB_FLG_*
the options are passed uninterpreted to the backend, and are
backend specific
*/
int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[])
{
int ret;
if (strncmp(url, "tdb:", 4) == 0 ||
strchr(url, ':') == NULL) {
ret = ltdb_connect(ldb, url, flags, options);
}
#if HAVE_ILDAP
else if (strncmp(url, "ldap", 4) == 0) {
ret = ildb_connect(ldb, url, flags, options);
}
#elif HAVE_LDAP
else if (strncmp(url, "ldap", 4) == 0) {
ret = lldb_connect(ldb, url, flags, options);
}
#endif
#if HAVE_SQLITE3
else if (strncmp(url, "sqlite:", 7) == 0) {
ret = lsqlite3_connect(ldb, url, flags, options);
}
#endif
else {
ldb_debug(ldb, LDB_DEBUG_FATAL, "Unable to find backend for '%s'\n", url);
return LDB_ERR_OTHER;
}
if (ret != LDB_ERR_SUCCESS) {
ldb_debug(ldb, LDB_DEBUG_ERROR, "Failed to connect to '%s'\n", url);
return ret;
}
if (ldb_load_modules(ldb, options) != LDB_ERR_SUCCESS) {
ldb_debug(ldb, LDB_DEBUG_FATAL, "Unable to load modules for '%s'\n", url);
return LDB_ERR_OTHER;
}
return LDB_ERR_SUCCESS;
}
static void ldb_reset_err_string(struct ldb_context *ldb)
{
if (ldb->err_string) {
talloc_free(ldb->err_string);
ldb->err_string = NULL;
}
}
/*
start a transaction
*/
static int ldb_start_trans(struct ldb_context *ldb)
{
return ldb->modules->ops->start_transaction(ldb->modules);
}
/*
end a transaction
*/
static int ldb_end_trans(struct ldb_context *ldb, int status)
{
return ldb->modules->ops->end_transaction(ldb->modules, status);
}
/*
search the database given a LDAP-like search expression
return the number of records found, or -1 on error
Use talloc_free to free the ldb_message returned in 'res'
*/
int ldb_search(struct ldb_context *ldb,
const struct ldb_dn *base,
enum ldb_scope scope,
const char *expression,
const char * const *attrs, struct ldb_message ***res)
{
ldb_reset_err_string(ldb);
return ldb->modules->ops->search(ldb->modules, base, scope, expression, attrs, res);
}
/*
search the database given a LDAP-like search expression
return the number of records found, or -1 on error
Use talloc_free to free the ldb_message returned in 'res'
*/
int ldb_search_bytree(struct ldb_context *ldb,
const struct ldb_dn *base,
enum ldb_scope scope,
struct ldb_parse_tree *tree,
const char * const *attrs, struct ldb_message ***res)
{
ldb_reset_err_string(ldb);
return ldb->modules->ops->search_bytree(ldb->modules, base, scope, tree, attrs, res);
}
/*
add a record to the database. Will fail if a record with the given class and key
already exists
*/
int ldb_add(struct ldb_context *ldb,
const struct ldb_message *message)
{
int status;
ldb_reset_err_string(ldb);
status = ldb_msg_sanity_check(message);
if (status != LDB_ERR_SUCCESS) return status;
status = ldb_start_trans(ldb);
if (status != LDB_ERR_SUCCESS) return status;
status = ldb->modules->ops->add_record(ldb->modules, message);
return ldb_end_trans(ldb, status);
}
/*
modify the specified attributes of a record
*/
int ldb_modify(struct ldb_context *ldb,
const struct ldb_message *message)
{
int status;
ldb_reset_err_string(ldb);
status = ldb_msg_sanity_check(message);
if (status != LDB_ERR_SUCCESS) return status;
status = ldb_start_trans(ldb);
if (status != LDB_ERR_SUCCESS) return status;
status = ldb->modules->ops->modify_record(ldb->modules, message);
return ldb_end_trans(ldb, status);
}
/*
delete a record from the database
*/
int ldb_delete(struct ldb_context *ldb, const struct ldb_dn *dn)
{
int status;
ldb_reset_err_string(ldb);
status = ldb_start_trans(ldb);
if (status != LDB_ERR_SUCCESS) return status;
status = ldb->modules->ops->delete_record(ldb->modules, dn);
return ldb_end_trans(ldb, status);
}
/*
rename a record in the database
*/
int ldb_rename(struct ldb_context *ldb, const struct ldb_dn *olddn, const struct ldb_dn *newdn)
{
int status;
ldb_reset_err_string(ldb);
status = ldb_start_trans(ldb);
if (status != LDB_ERR_SUCCESS) return status;
status = ldb->modules->ops->rename_record(ldb->modules, olddn, newdn);
return ldb_end_trans(ldb, status);
}
/*
return extended error information
*/
const char *ldb_errstring(struct ldb_context *ldb)
{
if (ldb->err_string) {
return ldb->err_string;
}
return NULL;
}
/*
set backend specific opaque parameters
*/
int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value)
{
struct ldb_opaque *o = talloc(ldb, struct ldb_opaque);
if (o == NULL) {
ldb_oom(ldb);
return LDB_ERR_OTHER;
}
o->next = ldb->opaque;
o->name = name;
o->value = value;
ldb->opaque = o;
return LDB_ERR_SUCCESS;
}
/*
get a previously set opaque value
*/
void *ldb_get_opaque(struct ldb_context *ldb, const char *name)
{
struct ldb_opaque *o;
for (o=ldb->opaque;o;o=o->next) {
if (strcmp(o->name, name) == 0) {
return o->value;
}
}
return NULL;
}
|
