/* $NetBSD: search.c,v 1.1.1.6.6.1 2019/08/10 06:17:18 martin Exp $ */ /* search.c - DNS SRV backend search function */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 2000-2019 The OpenLDAP Foundation. * Portions Copyright 2000-2003 Kurt D. Zeilenga. * 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 originally developed by Kurt D. Zeilenga for inclusion * in OpenLDAP Software. */ #include __RCSID("$NetBSD: search.c,v 1.1.1.6.6.1 2019/08/10 06:17:18 martin Exp $"); #include "portable.h" #include #include #include #include #include "slap.h" #include "proto-dnssrv.h" int dnssrv_back_search( Operation *op, SlapReply *rs ) { int i; int rc; char *domain = NULL; char *hostlist = NULL; char **hosts = NULL; char *refdn; struct berval nrefdn = BER_BVNULL; BerVarray urls = NULL; int manageDSAit; rs->sr_ref = NULL; if ( BER_BVISEMPTY( &op->o_req_ndn ) ) { /* FIXME: need some means to determine whether the database * is a glue instance; if we got here with empty DN, then * we passed this same test in dnssrv_back_referrals() */ if ( !SLAP_GLUE_INSTANCE( op->o_bd ) ) { rs->sr_err = LDAP_UNWILLING_TO_PERFORM; rs->sr_text = "DNS SRV operation upon null (empty) DN disallowed"; } else { rs->sr_err = LDAP_SUCCESS; } goto done; } manageDSAit = get_manageDSAit( op ); /* * FIXME: we may return a referral if manageDSAit is not set */ if ( !manageDSAit ) { send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM, "manageDSAit must be set" ); goto done; } if( ldap_dn2domain( op->o_req_dn.bv_val, &domain ) || domain == NULL ) { rs->sr_err = LDAP_REFERRAL; rs->sr_ref = default_referral; send_ldap_result( op, rs ); rs->sr_ref = NULL; goto done; } Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" -> domain=\"%s\"\n", op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "", domain, 0 ); if( ( rc = ldap_domain2hostlist( domain, &hostlist ) ) ) { Debug( LDAP_DEBUG_TRACE, "DNSSRV: domain2hostlist returned %d\n", rc, 0, 0 ); send_ldap_error( op, rs, LDAP_NO_SUCH_OBJECT, "no DNS SRV RR available for DN" ); goto done; } hosts = ldap_str2charray( hostlist, " " ); if( hosts == NULL ) { Debug( LDAP_DEBUG_TRACE, "DNSSRV: str2charrary error\n", 0, 0, 0 ); send_ldap_error( op, rs, LDAP_OTHER, "problem processing DNS SRV records for DN" ); goto done; } for( i=0; hosts[i] != NULL; i++) { struct berval url; url.bv_len = STRLENOF( "ldap://" ) + strlen(hosts[i]); url.bv_val = ch_malloc( url.bv_len + 1 ); strcpy( url.bv_val, "ldap://" ); strcpy( &url.bv_val[STRLENOF( "ldap://" )], hosts[i] ); if( ber_bvarray_add( &urls, &url ) < 0 ) { free( url.bv_val ); send_ldap_error( op, rs, LDAP_OTHER, "problem processing DNS SRV records for DN" ); goto done; } } Statslog( LDAP_DEBUG_STATS, "%s DNSSRV p=%d dn=\"%s\" url=\"%s\"\n", op->o_log_prefix, op->o_protocol, op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "", urls[0].bv_val, 0 ); Debug( LDAP_DEBUG_TRACE, "DNSSRV: ManageDSAit scope=%d dn=\"%s\" -> url=\"%s\"\n", op->oq_search.rs_scope, op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "", urls[0].bv_val ); rc = ldap_domain2dn(domain, &refdn); if( rc != LDAP_SUCCESS ) { send_ldap_error( op, rs, LDAP_OTHER, "DNS SRV problem processing manageDSAit control" ); goto done; } else { struct berval bv; bv.bv_val = refdn; bv.bv_len = strlen( refdn ); rc = dnNormalize( 0, NULL, NULL, &bv, &nrefdn, op->o_tmpmemctx ); if( rc != LDAP_SUCCESS ) { send_ldap_error( op, rs, LDAP_OTHER, "DNS SRV problem processing manageDSAit control" ); goto done; } } if( !dn_match( &nrefdn, &op->o_req_ndn ) ) { /* requested dn is subordinate */ Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" subordinate to refdn=\"%s\"\n", op->o_req_dn.bv_len ? op->o_req_dn.bv_val : "", refdn == NULL ? "" : refdn, NULL ); rs->sr_matched = refdn; rs->sr_err = LDAP_NO_SUCH_OBJECT; send_ldap_result( op, rs ); rs->sr_matched = NULL; } else if ( op->oq_search.rs_scope == LDAP_SCOPE_ONELEVEL ) { send_ldap_error( op, rs, LDAP_SUCCESS, NULL ); } else { Entry e = { 0 }; AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass; AttributeDescription *ad_ref = slap_schema.si_ad_ref; e.e_name.bv_val = ch_strdup( op->o_req_dn.bv_val ); e.e_name.bv_len = op->o_req_dn.bv_len; e.e_nname.bv_val = ch_strdup( op->o_req_ndn.bv_val ); e.e_nname.bv_len = op->o_req_ndn.bv_len; e.e_attrs = NULL; e.e_private = NULL; attr_merge_one( &e, ad_objectClass, &slap_schema.si_oc_referral->soc_cname, NULL ); attr_merge_one( &e, ad_objectClass, &slap_schema.si_oc_extensibleObject->soc_cname, NULL ); if ( ad_dc ) { char *p; struct berval bv; bv.bv_val = domain; p = strchr( bv.bv_val, '.' ); if ( p == bv.bv_val ) { bv.bv_len = 1; } else if ( p != NULL ) { bv.bv_len = p - bv.bv_val; } else { bv.bv_len = strlen( bv.bv_val ); } attr_merge_normalize_one( &e, ad_dc, &bv, NULL ); } if ( ad_associatedDomain ) { struct berval bv; ber_str2bv( domain, 0, 0, &bv ); attr_merge_normalize_one( &e, ad_associatedDomain, &bv, NULL ); } attr_merge_normalize_one( &e, ad_ref, urls, NULL ); rc = test_filter( op, &e, op->oq_search.rs_filter ); if( rc == LDAP_COMPARE_TRUE ) { rs->sr_entry = &e; rs->sr_attrs = op->oq_search.rs_attrs; rs->sr_flags = REP_ENTRY_MODIFIABLE; send_search_entry( op, rs ); rs->sr_entry = NULL; rs->sr_attrs = NULL; rs->sr_flags = 0; } entry_clean( &e ); rs->sr_err = LDAP_SUCCESS; send_ldap_result( op, rs ); } free( refdn ); if ( nrefdn.bv_val ) free( nrefdn.bv_val ); done: if( domain != NULL ) ch_free( domain ); if( hostlist != NULL ) ch_free( hostlist ); if( hosts != NULL ) ldap_charray_free( hosts ); if( urls != NULL ) ber_bvarray_free( urls ); return 0; }