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Diffstat (limited to '')
| -rw-r--r-- | servers/slapd/back-meta/init.c | 475 |
1 files changed, 475 insertions, 0 deletions
diff --git a/servers/slapd/back-meta/init.c b/servers/slapd/back-meta/init.c new file mode 100644 index 0000000..fefdba8 --- /dev/null +++ b/servers/slapd/back-meta/init.c @@ -0,0 +1,475 @@ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1999-2018 The OpenLDAP Foundation. + * Portions Copyright 2001-2003 Pierangelo Masarati. + * Portions Copyright 1999-2003 Howard Chu. + * 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>. + */ + +#include "portable.h" + +#include <stdio.h> + +#include <ac/string.h> +#include <ac/socket.h> + +#include "slap.h" +#include "config.h" +#include "../back-ldap/back-ldap.h" +#include "back-meta.h" + +int +meta_back_open( + BackendInfo *bi ) +{ + /* FIXME: need to remove the pagedResults, and likely more... */ + bi->bi_controls = slap_known_controls; + + return 0; +} + +int +meta_back_initialize( + BackendInfo *bi ) +{ + bi->bi_flags = +#if 0 + /* this is not (yet) set essentially because back-meta does not + * directly support extended operations... */ +#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 */ +#endif + + /* back-meta recognizes RFC4525 increment; + * let the remote server complain, if needed (ITS#5912) */ + SLAP_BFLAG_INCREMENT; + + bi->bi_open = meta_back_open; + bi->bi_config = 0; + bi->bi_close = 0; + bi->bi_destroy = 0; + + bi->bi_db_init = meta_back_db_init; + bi->bi_db_config = config_generic_wrapper; + bi->bi_db_open = meta_back_db_open; + bi->bi_db_close = 0; + bi->bi_db_destroy = meta_back_db_destroy; + + bi->bi_op_bind = meta_back_bind; + bi->bi_op_unbind = 0; + bi->bi_op_search = meta_back_search; + bi->bi_op_compare = meta_back_compare; + bi->bi_op_modify = meta_back_modify; + bi->bi_op_modrdn = meta_back_modrdn; + bi->bi_op_add = meta_back_add; + bi->bi_op_delete = meta_back_delete; + bi->bi_op_abandon = 0; + + bi->bi_extended = 0; + + bi->bi_chk_referrals = 0; + + bi->bi_connection_init = 0; + bi->bi_connection_destroy = meta_back_conn_destroy; + + return meta_back_init_cf( bi ); +} + +int +meta_back_db_init( + Backend *be, + ConfigReply *cr) +{ + metainfo_t *mi; + int i; + BackendInfo *bi; + + bi = backend_info( "ldap" ); + if ( !bi || !bi->bi_extra ) { + Debug( LDAP_DEBUG_ANY, + "meta_back_db_init: needs back-ldap\n", + 0, 0, 0 ); + return 1; + } + + mi = ch_calloc( 1, sizeof( metainfo_t ) ); + if ( mi == NULL ) { + return -1; + } + + /* set default flags */ + mi->mi_flags = + META_BACK_F_DEFER_ROOTDN_BIND + | META_BACK_F_PROXYAUTHZ_ALWAYS + | META_BACK_F_PROXYAUTHZ_ANON + | META_BACK_F_PROXYAUTHZ_NOANON; + + /* + * At present the default is no default target; + * this may change + */ + mi->mi_defaulttarget = META_DEFAULT_TARGET_NONE; + mi->mi_bind_timeout.tv_sec = 0; + mi->mi_bind_timeout.tv_usec = META_BIND_TIMEOUT; + + mi->mi_rebind_f = meta_back_default_rebind; + mi->mi_urllist_f = meta_back_default_urllist; + + ldap_pvt_thread_mutex_init( &mi->mi_conninfo.lai_mutex ); + ldap_pvt_thread_mutex_init( &mi->mi_cache.mutex ); + + /* safe default */ + mi->mi_nretries = META_RETRY_DEFAULT; + mi->mi_version = LDAP_VERSION3; + + for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) { + mi->mi_conn_priv[ i ].mic_num = 0; + LDAP_TAILQ_INIT( &mi->mi_conn_priv[ i ].mic_priv ); + } + mi->mi_conn_priv_max = LDAP_BACK_CONN_PRIV_DEFAULT; + + mi->mi_ldap_extra = (ldap_extra_t *)bi->bi_extra; + + be->be_private = mi; + be->be_cf_ocs = be->bd_info->bi_cf_ocs; + + return 0; +} + +int +meta_target_finish( + metainfo_t *mi, + metatarget_t *mt, + const char *log, + char *msg, + size_t msize +) +{ + slap_bindconf sb = { BER_BVNULL }; + struct berval mapped; + int rc; + + ber_str2bv( mt->mt_uri, 0, 0, &sb.sb_uri ); + sb.sb_version = mt->mt_version; + sb.sb_method = LDAP_AUTH_SIMPLE; + BER_BVSTR( &sb.sb_binddn, "" ); + + if ( META_BACK_TGT_T_F_DISCOVER( mt ) ) { + rc = slap_discover_feature( &sb, + slap_schema.si_ad_supportedFeatures->ad_cname.bv_val, + LDAP_FEATURE_ABSOLUTE_FILTERS ); + if ( rc == LDAP_COMPARE_TRUE ) { + mt->mt_flags |= LDAP_BACK_F_T_F; + } + } + + if ( META_BACK_TGT_CANCEL_DISCOVER( mt ) ) { + rc = slap_discover_feature( &sb, + slap_schema.si_ad_supportedExtension->ad_cname.bv_val, + LDAP_EXOP_CANCEL ); + if ( rc == LDAP_COMPARE_TRUE ) { + mt->mt_flags |= LDAP_BACK_F_CANCEL_EXOP; + } + } + + if ( !( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) + || mt->mt_idassert_authz != NULL ) + { + mi->mi_flags &= ~META_BACK_F_PROXYAUTHZ_ALWAYS; + } + + if ( ( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) + && !( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) ) + { + snprintf( msg, msize, + "%s: inconsistent idassert configuration " + "(likely authz=\"*\" used with \"non-prescriptive\" flag)", + log ); + Debug( LDAP_DEBUG_ANY, "%s (target %s)\n", + msg, mt->mt_uri, 0 ); + return 1; + } + + if ( !( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) ) + { + mi->mi_flags &= ~META_BACK_F_PROXYAUTHZ_ANON; + } + + if ( ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) ) + { + mi->mi_flags &= ~META_BACK_F_PROXYAUTHZ_NOANON; + } + + BER_BVZERO( &mapped ); + ldap_back_map( &mt->mt_rwmap.rwm_at, + &slap_schema.si_ad_entryDN->ad_cname, &mapped, + BACKLDAP_REMAP ); + if ( BER_BVISNULL( &mapped ) || mapped.bv_val[0] == '\0' ) { + mt->mt_rep_flags |= REP_NO_ENTRYDN; + } + + BER_BVZERO( &mapped ); + ldap_back_map( &mt->mt_rwmap.rwm_at, + &slap_schema.si_ad_subschemaSubentry->ad_cname, &mapped, + BACKLDAP_REMAP ); + if ( BER_BVISNULL( &mapped ) || mapped.bv_val[0] == '\0' ) { + mt->mt_rep_flags |= REP_NO_SUBSCHEMA; + } + + return 0; +} + +int +meta_back_db_open( + Backend *be, + ConfigReply *cr ) +{ + metainfo_t *mi = (metainfo_t *)be->be_private; + char msg[SLAP_TEXT_BUFLEN]; + + int i, rc; + + if ( mi->mi_ntargets == 0 ) { + /* Dynamically added, nothing to check here until + * some targets get added + */ + if ( slapMode & SLAP_SERVER_RUNNING ) + return 0; + + Debug( LDAP_DEBUG_ANY, + "meta_back_db_open: no targets defined\n", + 0, 0, 0 ); + return 1; + } + + for ( i = 0; i < mi->mi_ntargets; i++ ) { + metatarget_t *mt = mi->mi_targets[ i ]; + + if ( meta_target_finish( mi, mt, + "meta_back_db_open", msg, sizeof( msg ))) + return 1; + } + + return 0; +} + +/* + * meta_back_conn_free() + * + * actually frees a connection; the reference count must be 0, + * and it must not (or no longer) be in the cache. + */ +void +meta_back_conn_free( + void *v_mc ) +{ + metaconn_t *mc = v_mc; + int ntargets; + + assert( mc != NULL ); + assert( mc->mc_refcnt == 0 ); + + /* at least one must be present... */ + ntargets = mc->mc_info->mi_ntargets; + assert( ntargets > 0 ); + + for ( ; ntargets--; ) { + (void)meta_clear_one_candidate( NULL, mc, ntargets ); + } + + if ( !BER_BVISNULL( &mc->mc_local_ndn ) ) { + free( mc->mc_local_ndn.bv_val ); + } + + free( mc ); +} + +static void +mapping_free( + void *v_mapping ) +{ + struct ldapmapping *mapping = v_mapping; + ch_free( mapping->src.bv_val ); + ch_free( mapping->dst.bv_val ); + ch_free( mapping ); +} + +static void +mapping_dst_free( + void *v_mapping ) +{ + struct ldapmapping *mapping = v_mapping; + + if ( BER_BVISEMPTY( &mapping->dst ) ) { + mapping_free( &mapping[ -1 ] ); + } +} + +void +meta_back_map_free( struct ldapmap *lm ) +{ + avl_free( lm->remap, mapping_dst_free ); + avl_free( lm->map, mapping_free ); + lm->remap = NULL; + lm->map = NULL; +} + +static void +target_free( + metatarget_t *mt ) +{ + if ( mt->mt_uri ) { + free( mt->mt_uri ); + ldap_pvt_thread_mutex_destroy( &mt->mt_uri_mutex ); + } + if ( mt->mt_subtree ) { + meta_subtree_destroy( mt->mt_subtree ); + mt->mt_subtree = NULL; + } + if ( mt->mt_filter ) { + meta_filter_destroy( mt->mt_filter ); + mt->mt_filter = NULL; + } + if ( !BER_BVISNULL( &mt->mt_psuffix ) ) { + free( mt->mt_psuffix.bv_val ); + } + if ( !BER_BVISNULL( &mt->mt_nsuffix ) ) { + free( mt->mt_nsuffix.bv_val ); + } + if ( !BER_BVISNULL( &mt->mt_binddn ) ) { + free( mt->mt_binddn.bv_val ); + } + if ( !BER_BVISNULL( &mt->mt_bindpw ) ) { + free( mt->mt_bindpw.bv_val ); + } + if ( !BER_BVISNULL( &mt->mt_idassert_authcID ) ) { + ch_free( mt->mt_idassert_authcID.bv_val ); + } + if ( !BER_BVISNULL( &mt->mt_idassert_authcDN ) ) { + ch_free( mt->mt_idassert_authcDN.bv_val ); + } + if ( !BER_BVISNULL( &mt->mt_idassert_passwd ) ) { + ch_free( mt->mt_idassert_passwd.bv_val ); + } + if ( !BER_BVISNULL( &mt->mt_idassert_authzID ) ) { + ch_free( mt->mt_idassert_authzID.bv_val ); + } + if ( !BER_BVISNULL( &mt->mt_idassert_sasl_mech ) ) { + ch_free( mt->mt_idassert_sasl_mech.bv_val ); + } + if ( !BER_BVISNULL( &mt->mt_idassert_sasl_realm ) ) { + ch_free( mt->mt_idassert_sasl_realm.bv_val ); + } + if ( mt->mt_idassert_authz != NULL ) { + ber_bvarray_free( mt->mt_idassert_authz ); + } + if ( mt->mt_rwmap.rwm_rw ) { + rewrite_info_delete( &mt->mt_rwmap.rwm_rw ); + if ( mt->mt_rwmap.rwm_bva_rewrite ) + ber_bvarray_free( mt->mt_rwmap.rwm_bva_rewrite ); + } + meta_back_map_free( &mt->mt_rwmap.rwm_oc ); + meta_back_map_free( &mt->mt_rwmap.rwm_at ); + ber_bvarray_free( mt->mt_rwmap.rwm_bva_map ); + + free( mt ); +} + +int +meta_back_db_destroy( + Backend *be, + ConfigReply *cr ) +{ + metainfo_t *mi; + + if ( be->be_private ) { + int i; + + mi = ( metainfo_t * )be->be_private; + + /* + * Destroy the connection tree + */ + ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex ); + + if ( mi->mi_conninfo.lai_tree ) { + avl_free( mi->mi_conninfo.lai_tree, meta_back_conn_free ); + } + for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) { + while ( !LDAP_TAILQ_EMPTY( &mi->mi_conn_priv[ i ].mic_priv ) ) { + metaconn_t *mc = LDAP_TAILQ_FIRST( &mi->mi_conn_priv[ i ].mic_priv ); + + LDAP_TAILQ_REMOVE( &mi->mi_conn_priv[ i ].mic_priv, mc, mc_q ); + meta_back_conn_free( mc ); + } + } + + /* + * Destroy the per-target stuff (assuming there's at + * least one ...) + */ + if ( mi->mi_targets != NULL ) { + for ( i = 0; i < mi->mi_ntargets; i++ ) { + metatarget_t *mt = mi->mi_targets[ i ]; + + if ( META_BACK_TGT_QUARANTINE( mt ) ) { + if ( mt->mt_quarantine.ri_num != mi->mi_quarantine.ri_num ) + { + mi->mi_ldap_extra->retry_info_destroy( &mt->mt_quarantine ); + } + + ldap_pvt_thread_mutex_destroy( &mt->mt_quarantine_mutex ); + } + + target_free( mt ); + } + + free( mi->mi_targets ); + } + + ldap_pvt_thread_mutex_lock( &mi->mi_cache.mutex ); + if ( mi->mi_cache.tree ) { + avl_free( mi->mi_cache.tree, meta_dncache_free ); + } + + ldap_pvt_thread_mutex_unlock( &mi->mi_cache.mutex ); + ldap_pvt_thread_mutex_destroy( &mi->mi_cache.mutex ); + + ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex ); + ldap_pvt_thread_mutex_destroy( &mi->mi_conninfo.lai_mutex ); + + if ( mi->mi_candidates != NULL ) { + ber_memfree_x( mi->mi_candidates, NULL ); + } + + if ( META_BACK_QUARANTINE( mi ) ) { + mi->mi_ldap_extra->retry_info_destroy( &mi->mi_quarantine ); + } + } + + free( be->be_private ); + return 0; +} + +#if SLAPD_META == SLAPD_MOD_DYNAMIC + +/* conditionally define the init_module() function */ +SLAP_BACKEND_INIT_MODULE( meta ) + +#endif /* SLAPD_META == SLAPD_MOD_DYNAMIC */ + + |