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-rw-r--r--servers/slapd/back-ldap/init.c374
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diff --git a/servers/slapd/back-ldap/init.c b/servers/slapd/back-ldap/init.c
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+++ b/servers/slapd/back-ldap/init.c
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+/* init.c - initialize ldap backend */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2003-2022 The OpenLDAP Foundation.
+ * Portions Copyright 1999-2003 Howard Chu.
+ * Portions Copyright 2000-2003 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 the Howard Chu for inclusion
+ * in OpenLDAP Software and subsequently enhanced by Pierangelo
+ * Masarati.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+#include "slap-config.h"
+#include "back-ldap.h"
+#include "ldap_rq.h"
+
+static const ldap_extra_t ldap_extra = {
+ ldap_back_proxy_authz_ctrl,
+ ldap_back_controls_free,
+ slap_idassert_authzfrom_parse,
+ slap_idassert_passthru_parse_cf,
+ slap_idassert_parse,
+ slap_retry_info_destroy,
+ slap_retry_info_parse,
+ slap_retry_info_unparse,
+ ldap_back_connid2str
+};
+
+int
+ldap_back_open( BackendInfo *bi )
+{
+ bi->bi_controls = slap_known_controls;
+ return 0;
+}
+
+int
+ldap_back_initialize( BackendInfo *bi )
+{
+ int rc;
+
+ bi->bi_flags =
+#ifdef LDAP_DYNAMIC_OBJECTS
+ /* this is set because all the support a proxy has to provide
+ * is the capability to forward the refresh exop, and to
+ * pass thru entries that contain the dynamicObject class
+ * and the entryTtl attribute */
+ SLAP_BFLAG_DYNAMIC |
+#endif /* LDAP_DYNAMIC_OBJECTS */
+
+ /* back-ldap recognizes RFC4525 increment;
+ * let the remote server complain, if needed (ITS#5912) */
+ SLAP_BFLAG_INCREMENT;
+
+ bi->bi_open = ldap_back_open;
+ bi->bi_config = 0;
+ bi->bi_close = 0;
+ bi->bi_destroy = 0;
+
+ bi->bi_db_init = ldap_back_db_init;
+ bi->bi_db_config = config_generic_wrapper;
+ bi->bi_db_open = ldap_back_db_open;
+ bi->bi_db_close = ldap_back_db_close;
+ bi->bi_db_destroy = ldap_back_db_destroy;
+
+ bi->bi_op_bind = ldap_back_bind;
+ bi->bi_op_unbind = 0;
+ bi->bi_op_search = ldap_back_search;
+ bi->bi_op_compare = ldap_back_compare;
+ bi->bi_op_modify = ldap_back_modify;
+ bi->bi_op_modrdn = ldap_back_modrdn;
+ bi->bi_op_add = ldap_back_add;
+ bi->bi_op_delete = ldap_back_delete;
+ bi->bi_op_abandon = 0;
+
+ bi->bi_extended = ldap_back_extended;
+
+ bi->bi_chk_referrals = 0;
+ bi->bi_entry_get_rw = ldap_back_entry_get;
+
+ bi->bi_connection_init = 0;
+ bi->bi_connection_destroy = ldap_back_conn_destroy;
+
+ bi->bi_extra = (void *)&ldap_extra;
+
+ rc = ldap_back_init_cf( bi );
+ if ( rc ) {
+ return rc;
+ }
+
+ rc = chain_initialize();
+ if ( rc ) {
+ return rc;
+ }
+
+ rc = pbind_initialize();
+ if ( rc ) {
+ return rc;
+ }
+
+#ifdef SLAP_DISTPROC
+ rc = distproc_initialize();
+ if ( rc ) {
+ return rc;
+ }
+#endif
+ return rc;
+}
+
+int
+ldap_back_db_init( Backend *be, ConfigReply *cr )
+{
+ ldapinfo_t *li;
+ int rc;
+ unsigned i;
+
+ li = (ldapinfo_t *)ch_calloc( 1, sizeof( ldapinfo_t ) );
+ if ( li == NULL ) {
+ return -1;
+ }
+
+ li->li_rebind_f = ldap_back_default_rebind;
+ li->li_urllist_f = ldap_back_default_urllist;
+ li->li_urllist_p = li;
+ ldap_pvt_thread_mutex_init( &li->li_uri_mutex );
+
+ BER_BVZERO( &li->li_acl_authcID );
+ BER_BVZERO( &li->li_acl_authcDN );
+ BER_BVZERO( &li->li_acl_passwd );
+
+ li->li_acl_authmethod = LDAP_AUTH_NONE;
+ BER_BVZERO( &li->li_acl_sasl_mech );
+ li->li_acl.sb_tls = SB_TLS_DEFAULT;
+
+ li->li_idassert_mode = LDAP_BACK_IDASSERT_LEGACY;
+
+ BER_BVZERO( &li->li_idassert_authcID );
+ BER_BVZERO( &li->li_idassert_authcDN );
+ BER_BVZERO( &li->li_idassert_passwd );
+
+ BER_BVZERO( &li->li_idassert_authzID );
+
+ li->li_idassert_authmethod = LDAP_AUTH_NONE;
+ BER_BVZERO( &li->li_idassert_sasl_mech );
+ li->li_idassert_tls = SB_TLS_DEFAULT;
+
+ /* by default, use proxyAuthz control on each operation */
+ li->li_idassert_flags = LDAP_BACK_AUTH_PRESCRIPTIVE;
+
+ li->li_idassert_authz = NULL;
+
+ /* initialize flags */
+ li->li_flags = LDAP_BACK_F_CHASE_REFERRALS;
+
+ /* initialize version */
+ li->li_version = LDAP_VERSION3;
+
+ ldap_pvt_thread_mutex_init( &li->li_conninfo.lai_mutex );
+
+ for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
+ li->li_conn_priv[ i ].lic_num = 0;
+ LDAP_TAILQ_INIT( &li->li_conn_priv[ i ].lic_priv );
+ }
+ li->li_conn_priv_max = LDAP_BACK_CONN_PRIV_DEFAULT;
+
+ ldap_pvt_thread_mutex_init( &li->li_counter_mutex );
+ for ( i = 0; i < SLAP_OP_LAST; i++ ) {
+ ldap_pvt_mp_init( li->li_ops_completed[ i ] );
+ }
+
+ li->li_conn_expire_task = NULL;
+
+ be->be_private = li;
+ SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_NOLASTMOD;
+
+ be->be_cf_ocs = be->bd_info->bi_cf_ocs;
+
+ rc = ldap_back_monitor_db_init( be );
+ if ( rc != 0 ) {
+ /* ignore, by now */
+ rc = 0;
+ }
+
+ return rc;
+}
+
+int
+ldap_back_db_open( BackendDB *be, ConfigReply *cr )
+{
+ ldapinfo_t *li = (ldapinfo_t *)be->be_private;
+
+ slap_bindconf sb = { BER_BVNULL };
+ int rc = 0;
+
+ Debug( LDAP_DEBUG_TRACE,
+ "ldap_back_db_open: URI=%s\n",
+ li->li_uri != NULL ? li->li_uri : "" );
+
+ /* by default, use proxyAuthz control on each operation */
+ switch ( li->li_idassert_mode ) {
+ case LDAP_BACK_IDASSERT_LEGACY:
+ case LDAP_BACK_IDASSERT_SELF:
+ /* however, since admin connections are pooled and shared,
+ * only static authzIDs can be native */
+ li->li_idassert_flags &= ~LDAP_BACK_AUTH_NATIVE_AUTHZ;
+ break;
+
+ default:
+ break;
+ }
+
+ ber_str2bv( li->li_uri, 0, 0, &sb.sb_uri );
+ sb.sb_version = li->li_version;
+ sb.sb_method = LDAP_AUTH_SIMPLE;
+ BER_BVSTR( &sb.sb_binddn, "" );
+
+ if ( LDAP_BACK_T_F_DISCOVER( li ) && !LDAP_BACK_T_F( li ) ) {
+ rc = slap_discover_feature( &sb,
+ slap_schema.si_ad_supportedFeatures->ad_cname.bv_val,
+ LDAP_FEATURE_ABSOLUTE_FILTERS );
+ if ( rc == LDAP_COMPARE_TRUE ) {
+ li->li_flags |= LDAP_BACK_F_T_F;
+ }
+ }
+
+ if ( LDAP_BACK_CANCEL_DISCOVER( li ) && !LDAP_BACK_CANCEL( li ) ) {
+ rc = slap_discover_feature( &sb,
+ slap_schema.si_ad_supportedExtension->ad_cname.bv_val,
+ LDAP_EXOP_CANCEL );
+ if ( rc == LDAP_COMPARE_TRUE ) {
+ li->li_flags |= LDAP_BACK_F_CANCEL_EXOP;
+ }
+ }
+
+ /* monitor setup */
+ rc = ldap_back_monitor_db_open( be );
+ if ( rc != 0 ) {
+ /* ignore by now */
+ rc = 0;
+ }
+
+ li->li_flags |= LDAP_BACK_F_ISOPEN;
+
+ return rc;
+}
+
+void
+ldap_back_conn_free( void *v_lc )
+{
+ ldapconn_t *lc = v_lc;
+
+ if ( lc->lc_ld != NULL ) {
+ ldap_unbind_ext( lc->lc_ld, NULL, NULL );
+ }
+ if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
+ ch_free( lc->lc_bound_ndn.bv_val );
+ }
+ if ( !BER_BVISNULL( &lc->lc_cred ) ) {
+ memset( lc->lc_cred.bv_val, 0, lc->lc_cred.bv_len );
+ ch_free( lc->lc_cred.bv_val );
+ }
+ if ( !BER_BVISNULL( &lc->lc_local_ndn ) ) {
+ ch_free( lc->lc_local_ndn.bv_val );
+ }
+ lc->lc_q.tqe_prev = NULL;
+ lc->lc_q.tqe_next = NULL;
+ ch_free( lc );
+}
+
+int
+ldap_back_db_close( Backend *be, ConfigReply *cr )
+{
+ int rc = 0;
+
+ if ( be->be_private ) {
+ rc = ldap_back_monitor_db_close( be );
+ }
+
+ return rc;
+}
+
+int
+ldap_back_db_destroy( Backend *be, ConfigReply *cr )
+{
+ if ( be->be_private ) {
+ ldapinfo_t *li = ( ldapinfo_t * )be->be_private;
+ unsigned i;
+
+ (void)ldap_back_monitor_db_destroy( be );
+
+ /* Stop and remove the task that prunes expired connections */
+ if ( li->li_conn_expire_task != NULL ) {
+ ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
+ if ( ldap_pvt_runqueue_isrunning( &slapd_rq, li->li_conn_expire_task ) ) {
+ ldap_pvt_runqueue_stoptask( &slapd_rq, li->li_conn_expire_task );
+ }
+ ldap_pvt_runqueue_remove( &slapd_rq, li->li_conn_expire_task );
+ ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
+ }
+
+ ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
+
+ if ( li->li_uri != NULL ) {
+ ch_free( li->li_uri );
+ li->li_uri = NULL;
+
+ assert( li->li_bvuri != NULL );
+ ber_bvarray_free( li->li_bvuri );
+ li->li_bvuri = NULL;
+ }
+
+ bindconf_free( &li->li_tls );
+ bindconf_free( &li->li_acl );
+ bindconf_free( &li->li_idassert.si_bc );
+
+ if ( li->li_idassert_authz != NULL ) {
+ ber_bvarray_free( li->li_idassert_authz );
+ li->li_idassert_authz = NULL;
+ }
+ if ( li->li_conninfo.lai_tree ) {
+ ldap_tavl_free( li->li_conninfo.lai_tree, ldap_back_conn_free );
+ }
+ for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
+ while ( !LDAP_TAILQ_EMPTY( &li->li_conn_priv[ i ].lic_priv ) ) {
+ ldapconn_t *lc = LDAP_TAILQ_FIRST( &li->li_conn_priv[ i ].lic_priv );
+
+ LDAP_TAILQ_REMOVE( &li->li_conn_priv[ i ].lic_priv, lc, lc_q );
+ ldap_back_conn_free( lc );
+ }
+ }
+ if ( LDAP_BACK_QUARANTINE( li ) ) {
+ slap_retry_info_destroy( &li->li_quarantine );
+ ldap_pvt_thread_mutex_destroy( &li->li_quarantine_mutex );
+ }
+
+ ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
+ ldap_pvt_thread_mutex_destroy( &li->li_conninfo.lai_mutex );
+ ldap_pvt_thread_mutex_destroy( &li->li_uri_mutex );
+
+ for ( i = 0; i < SLAP_OP_LAST; i++ ) {
+ ldap_pvt_mp_clear( li->li_ops_completed[ i ] );
+ }
+ ldap_pvt_thread_mutex_destroy( &li->li_counter_mutex );
+ }
+
+ ch_free( be->be_private );
+
+ return 0;
+}
+
+#if SLAPD_LDAP == SLAPD_MOD_DYNAMIC
+
+/* conditionally define the init_module() function */
+SLAP_BACKEND_INIT_MODULE( ldap )
+
+#endif /* SLAPD_LDAP == SLAPD_MOD_DYNAMIC */