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-rw-r--r--servers/slapd/back-relay/init.c254
1 files changed, 254 insertions, 0 deletions
diff --git a/servers/slapd/back-relay/init.c b/servers/slapd/back-relay/init.c
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+++ b/servers/slapd/back-relay/init.c
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+/* init.c - initialize relay backend */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2004-2021 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 "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' "
+ "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\"" );
+ Log2( 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" );
+ Log2( 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 );
+ Log2( 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 );
+ Log2( 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 );
+ Log1( 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 */