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
|
/** BEGIN COPYRIGHT BLOCK
* This Program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; version 2 of the License.
*
* This Program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this Program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA.
*
* In addition, as a special exception, Red Hat, Inc. gives You the additional
* right to link the code of this Program with code not covered under the GNU
* General Public License ("Non-GPL Code") and to distribute linked combinations
* including the two, subject to the limitations in this paragraph. Non-GPL Code
* permitted under this exception must only link to the code of this Program
* through those well defined interfaces identified in the file named EXCEPTION
* found in the source code files (the "Approved Interfaces"). The files of
* Non-GPL Code may instantiate templates or use macros or inline functions from
* the Approved Interfaces without causing the resulting work to be covered by
* the GNU General Public License. Only Red Hat, Inc. may make changes or
* additions to the list of Approved Interfaces. You must obey the GNU General
* Public License in all respects for all of the Program code and other code used
* in conjunction with the Program except the Non-GPL Code covered by this
* exception. If you modify this file, you may extend this exception to your
* version of the file, but you are not obligated to do so. If you do not wish to
* provide this exception without modification, you must delete this exception
* statement from your version and license this file solely under the GPL without
* exception.
*
*
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
/*
* defbackend.c - implement a "backend of last resort" which is used only
* when a request's basedn does not match one of the suffixes of any of the
* configured backends.
*
*/
#include "slap.h"
/*
* ---------------- Macros ---------------------------------------------------
*/
#define DEFBACKEND_TYPE "default"
#define DEFBACKEND_OP_NOT_HANDLED 0
#define DEFBACKEND_OP_HANDLED 1
/*
* ---------------- Static Variables -----------------------------------------
*/
static struct slapdplugin defbackend_plugin;
static Slapi_Backend *defbackend_backend = NULL;
/*
* ---------------- Prototypes for Private Functions -------------------------
*/
static int defbackend_default( Slapi_PBlock *pb );
static int defbackend_noop( Slapi_PBlock *pb );
static int defbackend_abandon( Slapi_PBlock *pb );
static int defbackend_bind( Slapi_PBlock *pb );
static int defbackend_next_search_entry( Slapi_PBlock *pb );
/*
* ---------------- Public Functions -----------------------------------------
*/
/*
* defbackend_init: instantiate the default backend
*/
void
defbackend_init( void )
{
int rc;
char *errmsg;
Slapi_PBlock pb;
LDAPDebug( LDAP_DEBUG_TRACE, "defbackend_init\n", 0, 0, 0 );
/*
* create a new backend
*/
pblock_init( &pb );
defbackend_backend = slapi_be_new( DEFBACKEND_TYPE , DEFBACKEND_TYPE, 1 /* Private */, 0 /* Do Not Log Changes */ );
if (( rc = slapi_pblock_set( &pb, SLAPI_BACKEND, defbackend_backend ))
!= 0 ) {
errmsg = "slapi_pblock_set SLAPI_BACKEND failed";
goto cleanup_and_return;
}
/*
* create a plugin structure for this backend since the
* slapi_pblock_set()/slapi_pblock_get() functions assume there is one.
*/
memset( &defbackend_plugin, '\0', sizeof( struct slapdplugin ));
defbackend_plugin.plg_type = SLAPI_PLUGIN_DATABASE;
defbackend_backend->be_database = &defbackend_plugin;
if (( rc = slapi_pblock_set( &pb, SLAPI_PLUGIN, &defbackend_plugin ))
!= 0 ) {
errmsg = "slapi_pblock_set SLAPI_PLUGIN failed";
goto cleanup_and_return;
}
/* default backend is managed as if it would */
/* contain remote data. */
slapi_be_set_flag(defbackend_backend,SLAPI_BE_FLAG_REMOTE_DATA);
/*
* install handler functions, etc.
*/
errmsg = "slapi_pblock_set handlers failed";
rc = slapi_pblock_set( &pb, SLAPI_PLUGIN_VERSION,
(void *)SLAPI_PLUGIN_CURRENT_VERSION );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_BIND_FN,
(void *)defbackend_bind );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_UNBIND_FN,
(void *)defbackend_noop );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_SEARCH_FN,
(void *)defbackend_default );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_NEXT_SEARCH_ENTRY_FN,
(void *)defbackend_next_search_entry );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_COMPARE_FN,
(void *)defbackend_default );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_MODIFY_FN,
(void *)defbackend_default );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_MODRDN_FN,
(void *)defbackend_default );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_ADD_FN,
(void *)defbackend_default );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_DELETE_FN,
(void *)defbackend_default );
rc |= slapi_pblock_set( &pb, SLAPI_PLUGIN_DB_ABANDON_FN,
(void *)defbackend_abandon );
cleanup_and_return:
if ( rc != 0 ) {
LDAPDebug( LDAP_DEBUG_ANY, "defbackend_init: failed (%s)\n",
errmsg, 0, 0 );
exit( 1 );
}
}
/*
* defbackend_get_backend: return a pointer to the default backend.
* we never return NULL.
*/
Slapi_Backend *
defbackend_get_backend( void )
{
return( defbackend_backend );
}
/*
* ---------------- Private Functions ----------------------------------------
*/
static int
defbackend_default( Slapi_PBlock *pb )
{
LDAPDebug( LDAP_DEBUG_TRACE, "defbackend_default\n", 0, 0, 0 );
send_nobackend_ldap_result( pb );
return( DEFBACKEND_OP_HANDLED );
}
static int
defbackend_noop( Slapi_PBlock *pb )
{
LDAPDebug( LDAP_DEBUG_TRACE, "defbackend_noop\n", 0, 0, 0 );
return( DEFBACKEND_OP_HANDLED );
}
static int
defbackend_abandon( Slapi_PBlock *pb )
{
LDAPDebug( LDAP_DEBUG_TRACE, "defbackend_abandon\n", 0, 0, 0 );
/* nothing to do */
return( DEFBACKEND_OP_HANDLED );
}
static int
defbackend_bind( Slapi_PBlock *pb )
{
int rc, method;
struct berval *cred;
LDAPDebug( LDAP_DEBUG_TRACE, "defbackend_bind\n", 0, 0, 0 );
/*
* Accept simple binds that do not contain passwords (but do not
* update the bind DN field in the connection structure since we don't
* grant access based on these "NULL binds")
*/
slapi_pblock_get( pb, SLAPI_BIND_METHOD, &method );
slapi_pblock_get( pb, SLAPI_BIND_CREDENTIALS, &cred );
if ( method == LDAP_AUTH_SIMPLE && cred->bv_len == 0 ) {
PR_AtomicIncrement(g_get_global_snmp_vars()->ops_tbl.dsAnonymousBinds);
rc = SLAPI_BIND_ANONYMOUS;
} else {
send_nobackend_ldap_result( pb );
rc = SLAPI_BIND_FAIL;
}
return( rc );
}
static int
defbackend_next_search_entry( Slapi_PBlock *pb )
{
LDAPDebug( LDAP_DEBUG_TRACE, "defbackend_next_search_entry\n", 0, 0, 0 );
return( 0 ); /* no entries and no error */
}
|
