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/* init.c - initialize relay backend */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2004-2022 The OpenLDAP Foundation.
* Portions Copyright 2004 Pierangelo Masarati.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENTS:
* This work was initially developed by Pierangelo Masarati for inclusion
* in OpenLDAP Software.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include "slap.h"
#include "slap-config.h"
#include "back-relay.h"
static ConfigDriver relay_back_cf;
static ConfigTable relaycfg[] = {
{ "relay", "relay", 2, 2, 0,
ARG_MAGIC|ARG_DN|ARG_QUOTE,
relay_back_cf, "( OLcfgDbAt:5.1 "
"NAME 'olcRelay' "
"DESC 'Relay DN' "
"EQUALITY distinguishedNameMatch "
"SYNTAX OMsDN "
"SINGLE-VALUE )",
NULL, NULL },
{ NULL }
};
static ConfigOCs relayocs[] = {
{ "( OLcfgDbOc:5.1 "
"NAME 'olcRelayConfig' "
"DESC 'Relay backend configuration' "
"SUP olcDatabaseConfig "
"MAY ( olcRelay "
") )",
Cft_Database, relaycfg},
{ NULL, 0, NULL }
};
static int
relay_back_cf( ConfigArgs *c )
{
relay_back_info *ri = ( relay_back_info * )c->be->be_private;
int rc = 0;
if ( c->op == SLAP_CONFIG_EMIT ) {
if ( ri != NULL && !BER_BVISNULL( &ri->ri_realsuffix ) ) {
value_add_one( &c->rvalue_vals, &ri->ri_realsuffix );
return 0;
}
return 1;
} else if ( c->op == LDAP_MOD_DELETE ) {
if ( !BER_BVISNULL( &ri->ri_realsuffix ) ) {
ch_free( ri->ri_realsuffix.bv_val );
BER_BVZERO( &ri->ri_realsuffix );
ri->ri_bd = NULL;
return 0;
}
return 1;
} else {
BackendDB *bd;
assert( ri != NULL );
assert( BER_BVISNULL( &ri->ri_realsuffix ) );
if ( c->be->be_nsuffix == NULL ) {
snprintf( c->cr_msg, sizeof( c->cr_msg),
"\"relay\" directive "
"must appear after \"suffix\"" );
Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
"%s: %s.\n", c->log, c->cr_msg );
rc = 1;
goto relay_done;
}
if ( !BER_BVISNULL( &c->be->be_nsuffix[ 1 ] ) ) {
snprintf( c->cr_msg, sizeof( c->cr_msg),
"relaying of multiple suffix "
"database not supported" );
Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
"%s: %s.\n", c->log, c->cr_msg );
rc = 1;
goto relay_done;
}
bd = select_backend( &c->value_ndn, 1 );
if ( bd == NULL ) {
snprintf( c->cr_msg, sizeof( c->cr_msg),
"cannot find database "
"of relay dn \"%s\" "
"in \"olcRelay <dn>\"\n",
c->value_dn.bv_val );
Log( LDAP_DEBUG_CONFIG, LDAP_LEVEL_ERR,
"%s: %s.\n", c->log, c->cr_msg );
} else if ( bd->be_private == c->be->be_private ) {
snprintf( c->cr_msg, sizeof( c->cr_msg),
"relay dn \"%s\" would call self "
"in \"relay <dn>\" line\n",
c->value_dn.bv_val );
Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
"%s: %s.\n", c->log, c->cr_msg );
rc = 1;
goto relay_done;
}
ri->ri_realsuffix = c->value_ndn;
BER_BVZERO( &c->value_ndn );
relay_done:;
ch_free( c->value_dn.bv_val );
ch_free( c->value_ndn.bv_val );
}
return rc;
}
int
relay_back_initialize( BackendInfo *bi )
{
bi->bi_init = 0;
bi->bi_open = 0;
bi->bi_config = 0;
bi->bi_close = 0;
bi->bi_destroy = 0;
bi->bi_db_init = relay_back_db_init;
bi->bi_db_config = config_generic_wrapper;
bi->bi_db_open = relay_back_db_open;
#if 0
bi->bi_db_close = relay_back_db_close;
#endif
bi->bi_db_destroy = relay_back_db_destroy;
bi->bi_op_bind = relay_back_op_bind;
bi->bi_op_search = relay_back_op_search;
bi->bi_op_compare = relay_back_op_compare;
bi->bi_op_modify = relay_back_op_modify;
bi->bi_op_modrdn = relay_back_op_modrdn;
bi->bi_op_add = relay_back_op_add;
bi->bi_op_delete = relay_back_op_delete;
bi->bi_extended = relay_back_op_extended;
bi->bi_entry_release_rw = relay_back_entry_release_rw;
bi->bi_entry_get_rw = relay_back_entry_get_rw;
bi->bi_operational = relay_back_operational;
bi->bi_has_subordinates = relay_back_has_subordinates;
bi->bi_cf_ocs = relayocs;
return config_register_schema( relaycfg, relayocs );
}
int
relay_back_db_init( Backend *be, ConfigReply *cr)
{
relay_back_info *ri;
be->be_private = NULL;
ri = (relay_back_info *) ch_calloc( 1, RELAY_INFO_SIZE );
if ( ri == NULL ) {
return -1;
}
ri->ri_bd = NULL;
BER_BVZERO( &ri->ri_realsuffix );
ri->ri_massage = 0;
be->be_cf_ocs = be->bd_info->bi_cf_ocs;
be->be_private = (void *)ri;
return 0;
}
int
relay_back_db_open( Backend *be, ConfigReply *cr )
{
relay_back_info *ri = (relay_back_info *)be->be_private;
assert( ri != NULL );
if ( !BER_BVISNULL( &ri->ri_realsuffix ) ) {
ri->ri_bd = select_backend( &ri->ri_realsuffix, 1 );
/* must be there: it was during config! */
if ( ri->ri_bd == NULL ) {
snprintf( cr->msg, sizeof( cr->msg),
"cannot find database "
"of relay dn \"%s\" "
"in \"olcRelay <dn>\"\n",
ri->ri_realsuffix.bv_val );
Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
"relay_back_db_open: %s.\n", cr->msg );
return 1;
}
/* inherit controls */
AC_MEMCPY( be->bd_self->be_ctrls, ri->ri_bd->be_ctrls, sizeof( be->be_ctrls ) );
} else {
/* inherit all? */
AC_MEMCPY( be->bd_self->be_ctrls, frontendDB->be_ctrls, sizeof( be->be_ctrls ) );
}
return 0;
}
int
relay_back_db_close( Backend *be, ConfigReply *cr )
{
return 0;
}
int
relay_back_db_destroy( Backend *be, ConfigReply *cr)
{
relay_back_info *ri = (relay_back_info *)be->be_private;
if ( ri ) {
if ( !BER_BVISNULL( &ri->ri_realsuffix ) ) {
ch_free( ri->ri_realsuffix.bv_val );
}
ch_free( ri );
}
return 0;
}
#if SLAPD_RELAY == SLAPD_MOD_DYNAMIC
/* conditionally define the init_module() function */
SLAP_BACKEND_INIT_MODULE( relay )
#endif /* SLAPD_RELAY == SLAPD_MOD_DYNAMIC */
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