1 /* $NetBSD: compare.c,v 1.2 2020/08/11 13:15:42 christos Exp $ */ 2 3 /* $OpenLDAP$ */ 4 /* This work is part of OpenLDAP Software <http://www.openldap.org/>. 5 * 6 * Copyright 1999-2020 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 1.2 2020/08/11 13:15:42 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", 0, 0, 0 ); 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 0, 0, 0 ); 54 55 rs->sr_text = ( rs->sr_err == LDAP_OTHER ) 56 ? "SQL-backend error" : NULL; 57 goto return_results; 58 } 59 60 anlist[ 0 ].an_name = op->oq_compare.rs_ava->aa_desc->ad_cname; 61 anlist[ 0 ].an_desc = op->oq_compare.rs_ava->aa_desc; 62 BER_BVZERO( &anlist[ 1 ].an_name ); 63 64 /* 65 * Get the entry 66 */ 67 bsi.bsi_e = &e; 68 rc = backsql_init_search( &bsi, &op->o_req_ndn, LDAP_SCOPE_BASE, 69 (time_t)(-1), NULL, dbh, op, rs, anlist, 70 ( BACKSQL_ISF_MATCHED | BACKSQL_ISF_GET_ENTRY ) ); 71 switch ( rc ) { 72 case LDAP_SUCCESS: 73 break; 74 75 case LDAP_REFERRAL: 76 if ( manageDSAit && !BER_BVISNULL( &bsi.bsi_e->e_nname ) && 77 dn_match( &op->o_req_ndn, &bsi.bsi_e->e_nname ) ) 78 { 79 rs->sr_err = LDAP_SUCCESS; 80 rs->sr_text = NULL; 81 rs->sr_matched = NULL; 82 if ( rs->sr_ref ) { 83 ber_bvarray_free( rs->sr_ref ); 84 rs->sr_ref = NULL; 85 } 86 break; 87 } 88 /* fallthru */ 89 90 default: 91 Debug( LDAP_DEBUG_TRACE, "backsql_compare(): " 92 "could not retrieve compareDN ID - no such entry\n", 93 0, 0, 0 ); 94 goto return_results; 95 } 96 97 if ( get_assert( op ) && 98 ( test_filter( op, &e, get_assertion( op ) ) 99 != LDAP_COMPARE_TRUE ) ) 100 { 101 rs->sr_err = LDAP_ASSERTION_FAILED; 102 goto return_results; 103 } 104 105 if ( is_at_operational( op->oq_compare.rs_ava->aa_desc->ad_type ) ) { 106 SlapReply nrs = { REP_SEARCH }; 107 Attribute **ap; 108 109 for ( ap = &e.e_attrs; *ap; ap = &(*ap)->a_next ) 110 ; 111 112 nrs.sr_attrs = anlist; 113 nrs.sr_entry = &e; 114 nrs.sr_attr_flags = SLAP_OPATTRS_NO; 115 nrs.sr_operational_attrs = NULL; 116 117 rs->sr_err = backsql_operational( op, &nrs ); 118 if ( rs->sr_err != LDAP_SUCCESS ) { 119 goto return_results; 120 } 121 122 *ap = nrs.sr_operational_attrs; 123 } 124 125 if ( ! access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc, 126 &op->oq_compare.rs_ava->aa_value, 127 ACL_COMPARE, NULL ) ) 128 { 129 rs->sr_err = LDAP_INSUFFICIENT_ACCESS; 130 goto return_results; 131 } 132 133 rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE; 134 for ( a = attrs_find( e.e_attrs, op->oq_compare.rs_ava->aa_desc ); 135 a != NULL; 136 a = attrs_find( a->a_next, op->oq_compare.rs_ava->aa_desc ) ) 137 { 138 rs->sr_err = LDAP_COMPARE_FALSE; 139 if ( attr_valfind( a, 140 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH | 141 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH, 142 &op->oq_compare.rs_ava->aa_value, NULL, 143 op->o_tmpmemctx ) == 0 ) 144 { 145 rs->sr_err = LDAP_COMPARE_TRUE; 146 break; 147 } 148 } 149 150 return_results:; 151 switch ( rs->sr_err ) { 152 case LDAP_COMPARE_TRUE: 153 case LDAP_COMPARE_FALSE: 154 break; 155 156 default: 157 if ( !BER_BVISNULL( &e.e_nname ) && 158 ! access_allowed( op, &e, 159 slap_schema.si_ad_entry, NULL, 160 ACL_DISCLOSE, NULL ) ) 161 { 162 rs->sr_err = LDAP_NO_SUCH_OBJECT; 163 rs->sr_text = NULL; 164 } 165 break; 166 } 167 168 send_ldap_result( op, rs ); 169 170 if ( rs->sr_matched ) { 171 rs->sr_matched = NULL; 172 } 173 174 if ( rs->sr_ref ) { 175 ber_bvarray_free( rs->sr_ref ); 176 rs->sr_ref = NULL; 177 } 178 179 if ( !BER_BVISNULL( &bsi.bsi_base_id.eid_ndn ) ) { 180 (void)backsql_free_entryID( &bsi.bsi_base_id, 0, op->o_tmpmemctx ); 181 } 182 183 if ( !BER_BVISNULL( &e.e_nname ) ) { 184 backsql_entry_clean( op, &e ); 185 } 186 187 if ( bsi.bsi_attrs != NULL ) { 188 op->o_tmpfree( bsi.bsi_attrs, op->o_tmpmemctx ); 189 } 190 191 Debug(LDAP_DEBUG_TRACE,"<==backsql_compare()\n",0,0,0); 192 switch ( rs->sr_err ) { 193 case LDAP_COMPARE_TRUE: 194 case LDAP_COMPARE_FALSE: 195 return LDAP_SUCCESS; 196 197 default: 198 return rs->sr_err; 199 } 200 } 201 202