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465 lines
11 KiB
C
465 lines
11 KiB
C
/* init.c - initialization of a back-asyncmeta database */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2016-2020 The OpenLDAP Foundation.
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* Portions Copyright 2016 Symas Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/* ACKNOWLEDGEMENTS:
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* This work was developed by Symas Corporation
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* based on back-meta module for inclusion in OpenLDAP Software.
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* This work was sponsored by Ericsson. */
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
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#include <ac/socket.h>
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#include "slap.h"
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#include "config.h"
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#include "../back-ldap/back-ldap.h"
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#include "back-asyncmeta.h"
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int asyncmeta_debug;
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int
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asyncmeta_back_open(
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BackendInfo *bi )
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{
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/* FIXME: need to remove the pagedResults, and likely more... */
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bi->bi_controls = slap_known_controls;
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return 0;
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}
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int
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asyncmeta_back_initialize(
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BackendInfo *bi )
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{
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int rc;
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struct berval debugbv = BER_BVC("asyncmeta");
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rc = slap_loglevel_get( &debugbv, &asyncmeta_debug );
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if ( rc ) {
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return rc;
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}
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bi->bi_flags =
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#if 0
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/* this is not (yet) set essentially because back-meta does not
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* directly support extended operations... */
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#ifdef LDAP_DYNAMIC_OBJECTS
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/* this is set because all the support a proxy has to provide
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* is the capability to forward the refresh exop, and to
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* pass thru entries that contain the dynamicObject class
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* and the entryTtl attribute */
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SLAP_BFLAG_DYNAMIC |
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#endif /* LDAP_DYNAMIC_OBJECTS */
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#endif
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/* back-meta recognizes RFC4525 increment;
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* let the remote server complain, if needed (ITS#5912) */
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SLAP_BFLAG_INCREMENT;
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bi->bi_open = asyncmeta_back_open;
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bi->bi_config = 0;
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bi->bi_close = 0;
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bi->bi_destroy = 0;
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bi->bi_db_init = asyncmeta_back_db_init;
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bi->bi_db_config = config_generic_wrapper;
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bi->bi_db_open = asyncmeta_back_db_open;
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bi->bi_db_close = asyncmeta_back_db_close;
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bi->bi_db_destroy = asyncmeta_back_db_destroy;
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bi->bi_op_bind = asyncmeta_back_bind;
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bi->bi_op_unbind = 0;
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bi->bi_op_search = asyncmeta_back_search;
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bi->bi_op_compare = asyncmeta_back_compare;
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bi->bi_op_modify = asyncmeta_back_modify;
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bi->bi_op_modrdn = asyncmeta_back_modrdn;
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bi->bi_op_add = asyncmeta_back_add;
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bi->bi_op_delete = asyncmeta_back_delete;
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bi->bi_op_abandon = 0;
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bi->bi_extended = 0;
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bi->bi_chk_referrals = 0;
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bi->bi_connection_init = 0;
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bi->bi_connection_destroy = 0 /* asyncmeta_back_conn_destroy */;
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return asyncmeta_back_init_cf( bi );
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}
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int
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asyncmeta_back_db_init(
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Backend *be,
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ConfigReply *cr)
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{
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a_metainfo_t *mi;
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int i;
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BackendInfo *bi;
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bi = backend_info( "ldap" );
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if ( !bi || !bi->bi_extra ) {
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Debug( LDAP_DEBUG_ANY,
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"asyncmeta_back_db_init: needs back-ldap\n" );
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return 1;
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}
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mi = ch_calloc( 1, sizeof( a_metainfo_t ) );
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if ( mi == NULL ) {
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return -1;
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}
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/* set default flags */
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mi->mi_flags =
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META_BACK_F_DEFER_ROOTDN_BIND
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| META_BACK_F_PROXYAUTHZ_ALWAYS
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| META_BACK_F_PROXYAUTHZ_ANON
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| META_BACK_F_PROXYAUTHZ_NOANON;
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/*
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* At present the default is no default target;
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* this may change
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*/
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mi->mi_defaulttarget = META_DEFAULT_TARGET_NONE;
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mi->mi_bind_timeout.tv_sec = 0;
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mi->mi_bind_timeout.tv_usec = META_BIND_TIMEOUT;
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mi->mi_rebind_f = asyncmeta_back_default_rebind;
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mi->mi_urllist_f = asyncmeta_back_default_urllist;
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ldap_pvt_thread_mutex_init( &mi->mi_cache.mutex );
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/* safe default */
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mi->mi_nretries = META_RETRY_DEFAULT;
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mi->mi_version = LDAP_VERSION3;
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for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
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mi->mi_conn_priv[ i ].mic_num = 0;
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LDAP_TAILQ_INIT( &mi->mi_conn_priv[ i ].mic_priv );
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}
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mi->mi_conn_priv_max = LDAP_BACK_CONN_PRIV_DEFAULT;
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mi->mi_ldap_extra = (ldap_extra_t *)bi->bi_extra;
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ldap_pvt_thread_mutex_init( &mi->mi_mc_mutex);
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be->be_private = mi;
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be->be_cf_ocs = be->bd_info->bi_cf_ocs;
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return 0;
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}
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int
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asyncmeta_target_finish(
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a_metainfo_t *mi,
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a_metatarget_t *mt,
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const char *log,
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char *msg,
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size_t msize
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)
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{
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slap_bindconf sb = { BER_BVNULL };
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int rc;
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ber_str2bv( mt->mt_uri, 0, 0, &sb.sb_uri );
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sb.sb_version = mt->mt_version;
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sb.sb_method = LDAP_AUTH_SIMPLE;
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BER_BVSTR( &sb.sb_binddn, "" );
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if ( META_BACK_TGT_T_F_DISCOVER( mt ) ) {
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rc = slap_discover_feature( &sb,
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slap_schema.si_ad_supportedFeatures->ad_cname.bv_val,
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LDAP_FEATURE_ABSOLUTE_FILTERS );
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if ( rc == LDAP_COMPARE_TRUE ) {
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mt->mt_flags |= LDAP_BACK_F_T_F;
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}
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}
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if ( META_BACK_TGT_CANCEL_DISCOVER( mt ) ) {
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rc = slap_discover_feature( &sb,
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slap_schema.si_ad_supportedExtension->ad_cname.bv_val,
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LDAP_EXOP_CANCEL );
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if ( rc == LDAP_COMPARE_TRUE ) {
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mt->mt_flags |= LDAP_BACK_F_CANCEL_EXOP;
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}
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}
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if ( !( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE )
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|| mt->mt_idassert_authz != NULL )
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{
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mi->mi_flags &= ~META_BACK_F_PROXYAUTHZ_ALWAYS;
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}
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if ( ( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL )
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&& !( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) )
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{
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Debug(LDAP_DEBUG_ANY,
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"%s: inconsistent idassert configuration " "(likely authz=\"*\" used with \"non-prescriptive\" flag) (target %s)\n",
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log, mt->mt_uri );
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return 1;
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}
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if ( !( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) )
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{
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mi->mi_flags &= ~META_BACK_F_PROXYAUTHZ_ANON;
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}
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if ( ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) )
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{
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mi->mi_flags &= ~META_BACK_F_PROXYAUTHZ_NOANON;
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}
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return 0;
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}
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int
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asyncmeta_back_db_open(
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Backend *be,
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ConfigReply *cr )
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{
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a_metainfo_t *mi = (a_metainfo_t *)be->be_private;
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char msg[SLAP_TEXT_BUFLEN];
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int i;
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if ( mi->mi_ntargets == 0 ) {
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/* Dynamically added, nothing to check here until
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* some targets get added
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*/
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if ( slapMode & SLAP_SERVER_RUNNING )
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return 0;
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Debug( LDAP_DEBUG_ANY,
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"asyncmeta_back_db_open: no targets defined\n" );
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return 1;
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}
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mi->mi_num_conns = 0;
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for ( i = 0; i < mi->mi_ntargets; i++ ) {
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a_metatarget_t *mt = mi->mi_targets[ i ];
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if ( asyncmeta_target_finish( mi, mt,
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"asyncmeta_back_db_open", msg, sizeof( msg )))
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return 1;
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}
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mi->mi_num_conns = (mi->mi_max_target_conns == 0) ? META_BACK_CFG_MAX_TARGET_CONNS : mi->mi_max_target_conns;
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assert(mi->mi_num_conns > 0);
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mi->mi_conns = ch_calloc( mi->mi_num_conns, sizeof( a_metaconn_t ));
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for (i = 0; i < mi->mi_num_conns; i++) {
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a_metaconn_t *mc = &mi->mi_conns[i];
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ldap_pvt_thread_mutex_init( &mc->mc_om_mutex);
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mc->mc_authz_target = META_BOUND_NONE;
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mc->mc_conns = ch_calloc( mi->mi_ntargets, sizeof( a_metasingleconn_t ));
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mc->mc_info = mi;
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LDAP_STAILQ_INIT( &mc->mc_om_list );
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}
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mi->mi_suffix = be->be_suffix[0];
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ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
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mi->mi_task = ldap_pvt_runqueue_insert( &slapd_rq, 0,
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asyncmeta_timeout_loop, mi, "asyncmeta_timeout_loop", mi->mi_suffix.bv_val );
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ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
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return 0;
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}
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/*
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* asyncmeta_back_conn_free()
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*
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* actually frees a connection; the reference count must be 0,
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* and it must not (or no longer) be in the cache.
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*/
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void
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asyncmeta_back_conn_free(
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void *v_mc )
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{
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a_metaconn_t *mc = v_mc;
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assert( mc != NULL );
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ldap_pvt_thread_mutex_destroy( &mc->mc_om_mutex );
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free( mc );
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}
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static void
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asyncmeta_back_stop_miconns( a_metainfo_t *mi )
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{
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/*Todo do any other mc cleanup here if necessary*/
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}
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static void
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asyncmeta_back_clear_miconns( a_metainfo_t *mi )
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{
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int i, j;
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a_metaconn_t *mc;
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for (i = 0; i < mi->mi_num_conns; i++) {
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mc = &mi->mi_conns[i];
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/* todo clear the message queue */
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for (j = 0; j < mi->mi_ntargets; j ++) {
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asyncmeta_clear_one_msc(NULL, mc, j, 1, __FUNCTION__);
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}
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free(mc->mc_conns);
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ldap_pvt_thread_mutex_destroy( &mc->mc_om_mutex );
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}
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free(mi->mi_conns);
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}
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static void
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asyncmeta_target_free(
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a_metatarget_t *mt )
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{
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if ( mt->mt_uri ) {
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free( mt->mt_uri );
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ldap_pvt_thread_mutex_destroy( &mt->mt_uri_mutex );
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}
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if ( mt->mt_subtree ) {
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asyncmeta_subtree_destroy( mt->mt_subtree );
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mt->mt_subtree = NULL;
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}
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if ( mt->mt_filter ) {
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asyncmeta_filter_destroy( mt->mt_filter );
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mt->mt_filter = NULL;
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}
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if ( !BER_BVISNULL( &mt->mt_psuffix ) ) {
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free( mt->mt_psuffix.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_nsuffix ) ) {
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free( mt->mt_nsuffix.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_binddn ) ) {
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free( mt->mt_binddn.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_bindpw ) ) {
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free( mt->mt_bindpw.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_idassert_authcID ) ) {
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ch_free( mt->mt_idassert_authcID.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_idassert_authcDN ) ) {
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ch_free( mt->mt_idassert_authcDN.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_idassert_passwd ) ) {
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ch_free( mt->mt_idassert_passwd.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_idassert_authzID ) ) {
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ch_free( mt->mt_idassert_authzID.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_idassert_sasl_mech ) ) {
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ch_free( mt->mt_idassert_sasl_mech.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_idassert_sasl_realm ) ) {
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ch_free( mt->mt_idassert_sasl_realm.bv_val );
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}
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if ( mt->mt_idassert_authz != NULL ) {
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ber_bvarray_free( mt->mt_idassert_authz );
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}
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if ( !BER_BVISNULL( &mt->mt_lsuffixm )) {
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ch_free( mt->mt_lsuffixm.bv_val );
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}
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if ( !BER_BVISNULL( &mt->mt_rsuffixm )) {
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ch_free( mt->mt_rsuffixm.bv_val );
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}
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free( mt );
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}
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int
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asyncmeta_back_db_close(
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Backend *be,
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ConfigReply *cr )
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{
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a_metainfo_t *mi;
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if ( be->be_private ) {
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mi = ( a_metainfo_t * )be->be_private;
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if ( mi->mi_task != NULL ) {
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ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
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if ( ldap_pvt_runqueue_isrunning( &slapd_rq, mi->mi_task )) {
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ldap_pvt_runqueue_stoptask( &slapd_rq, mi->mi_task);
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}
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ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
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mi->mi_task = NULL;
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}
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ldap_pvt_thread_mutex_lock( &mi->mi_mc_mutex );
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asyncmeta_back_stop_miconns( mi );
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ldap_pvt_thread_mutex_unlock( &mi->mi_mc_mutex );
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}
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return 0;
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}
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int
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asyncmeta_back_db_destroy(
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Backend *be,
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ConfigReply *cr )
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{
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a_metainfo_t *mi;
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if ( be->be_private ) {
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int i;
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mi = ( a_metainfo_t * )be->be_private;
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/*
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* Destroy the per-target stuff (assuming there's at
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* least one ...)
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*/
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if ( mi->mi_targets != NULL ) {
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for ( i = 0; i < mi->mi_ntargets; i++ ) {
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a_metatarget_t *mt = mi->mi_targets[ i ];
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if ( META_BACK_TGT_QUARANTINE( mt ) ) {
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if ( mt->mt_quarantine.ri_num != mi->mi_quarantine.ri_num )
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{
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mi->mi_ldap_extra->retry_info_destroy( &mt->mt_quarantine );
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}
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ldap_pvt_thread_mutex_destroy( &mt->mt_quarantine_mutex );
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}
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asyncmeta_target_free( mt );
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}
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free( mi->mi_targets );
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}
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ldap_pvt_thread_mutex_lock( &mi->mi_cache.mutex );
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if ( mi->mi_cache.tree ) {
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avl_free( mi->mi_cache.tree, asyncmeta_dncache_free );
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}
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ldap_pvt_thread_mutex_unlock( &mi->mi_cache.mutex );
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ldap_pvt_thread_mutex_destroy( &mi->mi_cache.mutex );
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if ( mi->mi_candidates != NULL ) {
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ber_memfree_x( mi->mi_candidates, NULL );
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}
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if ( META_BACK_QUARANTINE( mi ) ) {
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mi->mi_ldap_extra->retry_info_destroy( &mi->mi_quarantine );
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}
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ldap_pvt_thread_mutex_lock( &mi->mi_mc_mutex );
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asyncmeta_back_clear_miconns(mi);
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ldap_pvt_thread_mutex_unlock( &mi->mi_mc_mutex );
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ldap_pvt_thread_mutex_destroy( &mi->mi_mc_mutex );
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free( be->be_private );
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}
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return 0;
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}
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#if SLAPD_ASYNCMETA == SLAPD_MOD_DYNAMIC
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/* conditionally define the init_module() function */
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SLAP_BACKEND_INIT_MODULE( asyncmeta )
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#endif /* SLAPD_ASYNCMETA == SLAPD_MOD_DYNAMIC */
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