/* compare.cpp - ndb backend compare routine */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 2008-2020 The OpenLDAP Foundation. * 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 * . */ /* ACKNOWLEDGEMENTS: * This work was initially developed by Howard Chu for inclusion * in OpenLDAP Software. This work was sponsored by MySQL. */ #include "portable.h" #include #include #include "back-ndb.h" int ndb_back_compare( Operation *op, SlapReply *rs ) { struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private; Entry e = {0}; Attribute *a; int manageDSAit = get_manageDSAit( op ); NdbArgs NA; NdbRdns rdns; struct berval matched; /* Get our NDB handle */ rs->sr_err = ndb_thread_handle( op, &NA.ndb ); rdns.nr_num = 0; NA.rdns = &rdns; e.e_name = op->o_req_dn; e.e_nname = op->o_req_ndn; NA.e = &e; dn2entry_retry: NA.txn = NA.ndb->startTransaction(); rs->sr_text = NULL; if( !NA.txn ) { Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(ndb_compare) ": startTransaction failed: %s (%d)\n", NA.ndb->getNdbError().message, NA.ndb->getNdbError().code, 0 ); rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } NA.ocs = NULL; /* get entry */ rs->sr_err = ndb_entry_get_info( op, &NA, 0, &matched ); switch( rs->sr_err ) { case 0: break; case LDAP_NO_SUCH_OBJECT: rs->sr_matched = matched.bv_val; if ( NA.ocs ) ndb_check_referral( op, rs, &NA ); goto return_results; case LDAP_BUSY: rs->sr_text = "ldap server busy"; goto return_results; #if 0 case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto dn2entry_retry; #endif default: rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } rs->sr_err = ndb_entry_get_data( op, &NA, 0 ); ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx ); if (!manageDSAit && is_entry_referral( &e ) ) { /* return referral only if "disclose" is granted on the object */ if ( !access_allowed( op, &e, slap_schema.si_ad_entry, NULL, ACL_DISCLOSE, NULL ) ) { rs->sr_err = LDAP_NO_SUCH_OBJECT; } else { /* entry is a referral, don't allow compare */ rs->sr_ref = get_entry_referrals( op, &e ); rs->sr_err = LDAP_REFERRAL; rs->sr_matched = e.e_name.bv_val; rs->sr_flags |= REP_REF_MUSTBEFREED; } Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0, 0, 0 ); goto return_results; } if ( get_assert( op ) && ( test_filter( op, &e, (Filter *)get_assertion( op )) != LDAP_COMPARE_TRUE )) { if ( !access_allowed( op, &e, slap_schema.si_ad_entry, NULL, ACL_DISCLOSE, NULL ) ) { rs->sr_err = LDAP_NO_SUCH_OBJECT; } else { rs->sr_err = LDAP_ASSERTION_FAILED; } goto return_results; } if ( !access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc, &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL ) ) { /* return error only if "disclose" * is granted on the object */ if ( !access_allowed( op, &e, slap_schema.si_ad_entry, NULL, ACL_DISCLOSE, NULL ) ) { rs->sr_err = LDAP_NO_SUCH_OBJECT; } else { rs->sr_err = LDAP_INSUFFICIENT_ACCESS; } goto return_results; } rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE; for ( a = attrs_find( e.e_attrs, op->oq_compare.rs_ava->aa_desc ); a != NULL; a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ) ) { rs->sr_err = LDAP_COMPARE_FALSE; if ( attr_valfind( a, SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH, &op->oq_compare.rs_ava->aa_value, NULL, op->o_tmpmemctx ) == 0 ) { rs->sr_err = LDAP_COMPARE_TRUE; break; } } return_results: NA.txn->close(); if ( e.e_attrs ) { attrs_free( e.e_attrs ); e.e_attrs = NULL; } send_ldap_result( op, rs ); switch ( rs->sr_err ) { case LDAP_COMPARE_FALSE: case LDAP_COMPARE_TRUE: rs->sr_err = LDAP_SUCCESS; break; } return rs->sr_err; }