1 /* $NetBSD: compare.c,v 1.3 2021/08/14 16:15:01 christos Exp $ */ 2 3 /* $OpenLDAP$ */ 4 /* This work is part of OpenLDAP Software <http://www.openldap.org/>. 5 * 6 * Copyright 1999-2021 The OpenLDAP Foundation. 7 * Portions Copyright 1999 Dmitry Kovalev. 8 * Portions Copyright 2002 Pierangelo Masarati. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted only as authorized by the OpenLDAP 13 * Public License. 14 * 15 * A copy of this license is available in the file LICENSE in the 16 * top-level directory of the distribution or, alternatively, at 17 * <http://www.OpenLDAP.org/license.html>. 18 */ 19 /* ACKNOWLEDGEMENTS: 20 * This work was initially developed by Dmitry Kovalev for inclusion 21 * by OpenLDAP Software. Additional significant contributors include 22 * Pierangelo Masarati. 23 */ 24 25 #include <sys/cdefs.h> 26 __RCSID("$NetBSD: compare.c,v 1.3 2021/08/14 16:15:01 christos Exp $"); 27 28 #include "portable.h" 29 30 #include <stdio.h> 31 #include <sys/types.h> 32 33 #include "slap.h" 34 #include "proto-sql.h" 35 36 int 37 backsql_compare( Operation *op, SlapReply *rs ) 38 { 39 SQLHDBC dbh = SQL_NULL_HDBC; 40 Entry e = { 0 }; 41 Attribute *a = NULL; 42 backsql_srch_info bsi = { 0 }; 43 int rc; 44 int manageDSAit = get_manageDSAit( op ); 45 AttributeName anlist[2]; 46 47 Debug( LDAP_DEBUG_TRACE, "==>backsql_compare()\n" ); 48 49 rs->sr_err = backsql_get_db_conn( op, &dbh ); 50 if ( rs->sr_err != LDAP_SUCCESS ) { 51 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): " 52 "could not get connection handle - exiting\n" ); 53 54 rs->sr_text = ( rs->sr_err == LDAP_OTHER ) 55 ? "SQL-backend error" : NULL; 56 goto return_results; 57 } 58 59 anlist[ 0 ].an_name = op->oq_compare.rs_ava->aa_desc->ad_cname; 60 anlist[ 0 ].an_desc = op->oq_compare.rs_ava->aa_desc; 61 BER_BVZERO( &anlist[ 1 ].an_name ); 62 63 /* 64 * Get the entry 65 */ 66 bsi.bsi_e = &e; 67 rc = backsql_init_search( &bsi, &op->o_req_ndn, LDAP_SCOPE_BASE, 68 (time_t)(-1), NULL, dbh, op, rs, anlist, 69 ( BACKSQL_ISF_MATCHED | BACKSQL_ISF_GET_ENTRY ) ); 70 switch ( rc ) { 71 case LDAP_SUCCESS: 72 break; 73 74 case LDAP_REFERRAL: 75 if ( manageDSAit && !BER_BVISNULL( &bsi.bsi_e->e_nname ) && 76 dn_match( &op->o_req_ndn, &bsi.bsi_e->e_nname ) ) 77 { 78 rs->sr_err = LDAP_SUCCESS; 79 rs->sr_text = NULL; 80 rs->sr_matched = NULL; 81 if ( rs->sr_ref ) { 82 ber_bvarray_free( rs->sr_ref ); 83 rs->sr_ref = NULL; 84 } 85 break; 86 } 87 /* fallthru */ 88 89 default: 90 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): " 91 "could not retrieve compareDN ID - no such entry\n" ); 92 goto return_results; 93 } 94 95 if ( get_assert( op ) && 96 ( test_filter( op, &e, get_assertion( op ) ) 97 != LDAP_COMPARE_TRUE ) ) 98 { 99 rs->sr_err = LDAP_ASSERTION_FAILED; 100 goto return_results; 101 } 102 103 if ( is_at_operational( op->oq_compare.rs_ava->aa_desc->ad_type ) ) { 104 SlapReply nrs = { REP_SEARCH }; 105 Attribute **ap; 106 107 for ( ap = &e.e_attrs; *ap; ap = &(*ap)->a_next ) 108 ; 109 110 nrs.sr_attrs = anlist; 111 nrs.sr_entry = &e; 112 nrs.sr_attr_flags = SLAP_OPATTRS_NO; 113 nrs.sr_operational_attrs = NULL; 114 115 rs->sr_err = backsql_operational( op, &nrs ); 116 if ( rs->sr_err != LDAP_SUCCESS ) { 117 goto return_results; 118 } 119 120 *ap = nrs.sr_operational_attrs; 121 } 122 123 if ( ! access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc, 124 &op->oq_compare.rs_ava->aa_value, 125 ACL_COMPARE, NULL ) ) 126 { 127 rs->sr_err = LDAP_INSUFFICIENT_ACCESS; 128 goto return_results; 129 } 130 131 rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE; 132 for ( a = attrs_find( e.e_attrs, op->oq_compare.rs_ava->aa_desc ); 133 a != NULL; 134 a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ) ) 135 { 136 rs->sr_err = LDAP_COMPARE_FALSE; 137 if ( attr_valfind( a, 138 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH | 139 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH, 140 &op->oq_compare.rs_ava->aa_value, NULL, 141 op->o_tmpmemctx ) == 0 ) 142 { 143 rs->sr_err = LDAP_COMPARE_TRUE; 144 break; 145 } 146 } 147 148 return_results:; 149 switch ( rs->sr_err ) { 150 case LDAP_COMPARE_TRUE: 151 case LDAP_COMPARE_FALSE: 152 break; 153 154 default: 155 if ( !BER_BVISNULL( &e.e_nname ) && 156 ! access_allowed( op, &e, 157 slap_schema.si_ad_entry, NULL, 158 ACL_DISCLOSE, NULL ) ) 159 { 160 rs->sr_err = LDAP_NO_SUCH_OBJECT; 161 rs->sr_text = NULL; 162 } 163 break; 164 } 165 166 send_ldap_result( op, rs ); 167 168 if ( rs->sr_matched ) { 169 rs->sr_matched = NULL; 170 } 171 172 if ( rs->sr_ref ) { 173 ber_bvarray_free( rs->sr_ref ); 174 rs->sr_ref = NULL; 175 } 176 177 if ( !BER_BVISNULL( &bsi.bsi_base_id.eid_ndn ) ) { 178 (void)backsql_free_entryID( &bsi.bsi_base_id, 0, op->o_tmpmemctx ); 179 } 180 181 if ( !BER_BVISNULL( &e.e_nname ) ) { 182 backsql_entry_clean( op, &e ); 183 } 184 185 if ( bsi.bsi_attrs != NULL ) { 186 op->o_tmpfree( bsi.bsi_attrs, op->o_tmpmemctx ); 187 } 188 189 Debug(LDAP_DEBUG_TRACE,"<==backsql_compare()\n" ); 190 switch ( rs->sr_err ) { 191 case LDAP_COMPARE_TRUE: 192 case LDAP_COMPARE_FALSE: 193 return LDAP_SUCCESS; 194 195 default: 196 return rs->sr_err; 197 } 198 } 199 200