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/** 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 **/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/*
* 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 ) {
slapi_counter_increment(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 */
}
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