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130 lines
3.3 KiB
C
130 lines
3.3 KiB
C
/* referral.c - DNS SRV backend referral handler */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2000-2009 The OpenLDAP Foundation.
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* Portions Copyright 2000-2003 Kurt D. Zeilenga.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/* ACKNOWLEDGEMENTS:
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* This work was originally developed by Kurt D. Zeilenga for inclusion
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* in OpenLDAP Software.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
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#include <ac/socket.h>
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#include "slap.h"
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#include "proto-dnssrv.h"
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int
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dnssrv_back_referrals(
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Operation *op,
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SlapReply *rs )
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{
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int i;
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int rc = LDAP_OTHER;
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char *domain = NULL;
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char *hostlist = NULL;
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char **hosts = NULL;
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BerVarray urls = NULL;
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if ( BER_BVISEMPTY( &op->o_req_dn ) ) {
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/* FIXME: need some means to determine whether the database
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* is a glue instance */
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if ( SLAP_GLUE_INSTANCE( op->o_bd ) ) {
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return LDAP_SUCCESS;
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}
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rs->sr_text = "DNS SRV operation upon null (empty) DN disallowed";
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return LDAP_UNWILLING_TO_PERFORM;
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}
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if( get_manageDSAit( op ) ) {
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if( op->o_tag == LDAP_REQ_SEARCH ) {
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return LDAP_SUCCESS;
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}
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rs->sr_text = "DNS SRV problem processing manageDSAit control";
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return LDAP_OTHER;
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}
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if( ldap_dn2domain( op->o_req_dn.bv_val, &domain ) || domain == NULL ) {
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rs->sr_err = LDAP_REFERRAL;
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rs->sr_ref = default_referral;
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send_ldap_result( op, rs );
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rs->sr_ref = NULL;
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return LDAP_REFERRAL;
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}
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Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" -> domain=\"%s\"\n",
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op->o_req_dn.bv_val, domain, 0 );
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i = ldap_domain2hostlist( domain, &hostlist );
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if ( i ) {
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Debug( LDAP_DEBUG_TRACE,
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"DNSSRV: domain2hostlist(%s) returned %d\n",
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domain, i, 0 );
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rs->sr_text = "no DNS SRV RR available for DN";
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rc = LDAP_NO_SUCH_OBJECT;
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goto done;
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}
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hosts = ldap_str2charray( hostlist, " " );
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if( hosts == NULL ) {
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Debug( LDAP_DEBUG_TRACE, "DNSSRV: str2charrary error\n", 0, 0, 0 );
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rs->sr_text = "problem processing DNS SRV records for DN";
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goto done;
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}
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for( i=0; hosts[i] != NULL; i++) {
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struct berval url;
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url.bv_len = STRLENOF( "ldap://" ) + strlen( hosts[i] );
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url.bv_val = ch_malloc( url.bv_len + 1 );
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strcpy( url.bv_val, "ldap://" );
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strcpy( &url.bv_val[STRLENOF( "ldap://" )], hosts[i] );
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if ( ber_bvarray_add( &urls, &url ) < 0 ) {
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free( url.bv_val );
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rs->sr_text = "problem processing DNS SRV records for DN";
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goto done;
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}
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}
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Statslog( LDAP_DEBUG_STATS,
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"%s DNSSRV p=%d dn=\"%s\" url=\"%s\"\n",
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op->o_log_prefix, op->o_protocol,
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op->o_req_dn.bv_val, urls[0].bv_val, 0 );
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Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" -> url=\"%s\"\n",
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op->o_req_dn.bv_val, urls[0].bv_val, 0 );
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rs->sr_ref = urls;
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send_ldap_error( op, rs, LDAP_REFERRAL,
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"DNS SRV generated referrals" );
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rs->sr_ref = NULL;
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rc = LDAP_REFERRAL;
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done:
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if( domain != NULL ) ch_free( domain );
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if( hostlist != NULL ) ch_free( hostlist );
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if( hosts != NULL ) ldap_charray_free( hosts );
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ber_bvarray_free( urls );
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return rc;
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}
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