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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 17:54:12 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 17:54:12 +0000
commitb527294153be3b79563c82c66102adc0004736c0 (patch)
tree9b423a224848441885190b5ea7cf0feb23510c9d /servers/slapd/back-dnssrv/referral.c
parentInitial commit. (diff)
downloadopenldap-b527294153be3b79563c82c66102adc0004736c0.tar.xz
openldap-b527294153be3b79563c82c66102adc0004736c0.zip
Adding upstream version 2.6.7+dfsg.upstream/2.6.7+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'servers/slapd/back-dnssrv/referral.c')
-rw-r--r--servers/slapd/back-dnssrv/referral.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/servers/slapd/back-dnssrv/referral.c b/servers/slapd/back-dnssrv/referral.c
new file mode 100644
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+++ b/servers/slapd/back-dnssrv/referral.c
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+/* referral.c - DNS SRV backend referral handler */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2022 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
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was originally developed by Kurt D. Zeilenga for inclusion
+ * in OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+
+#include "slap.h"
+#include "proto-dnssrv.h"
+
+int
+dnssrv_back_referrals(
+ Operation *op,
+ SlapReply *rs )
+{
+ int i;
+ int rc = LDAP_OTHER;
+ char *domain = NULL;
+ char *hostlist = NULL;
+ char **hosts = NULL;
+ BerVarray urls = NULL;
+
+ if ( BER_BVISEMPTY( &op->o_req_dn ) ) {
+ /* FIXME: need some means to determine whether the database
+ * is a glue instance */
+ if ( SLAP_GLUE_INSTANCE( op->o_bd ) ) {
+ return LDAP_SUCCESS;
+ }
+
+ rs->sr_text = "DNS SRV operation upon null (empty) DN disallowed";
+ return LDAP_UNWILLING_TO_PERFORM;
+ }
+
+ if( get_manageDSAit( op ) ) {
+ if( op->o_tag == LDAP_REQ_SEARCH ) {
+ return LDAP_SUCCESS;
+ }
+
+ rs->sr_text = "DNS SRV problem processing manageDSAit control";
+ return LDAP_OTHER;
+ }
+
+ 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;
+ return LDAP_REFERRAL;
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" -> domain=\"%s\"\n",
+ op->o_req_dn.bv_val, domain );
+
+ i = ldap_domain2hostlist( domain, &hostlist );
+ if ( i ) {
+ Debug( LDAP_DEBUG_TRACE,
+ "DNSSRV: domain2hostlist(%s) returned %d\n",
+ domain, i );
+ rs->sr_text = "no DNS SRV RR available for DN";
+ rc = LDAP_NO_SUCH_OBJECT;
+ goto done;
+ }
+
+ hosts = ldap_str2charray( hostlist, " " );
+
+ if( hosts == NULL ) {
+ Debug( LDAP_DEBUG_TRACE, "DNSSRV: str2charray error\n" );
+ rs->sr_text = "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 );
+ rs->sr_text = "problem processing DNS SRV records for DN";
+ goto done;
+ }
+ }
+
+ Debug( LDAP_DEBUG_STATS,
+ "%s DNSSRV p=%d dn=\"%s\" url=\"%s\"\n",
+ op->o_log_prefix, op->o_protocol,
+ op->o_req_dn.bv_val, urls[0].bv_val );
+
+ Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" -> url=\"%s\"\n",
+ op->o_req_dn.bv_val, urls[0].bv_val );
+
+ rs->sr_ref = urls;
+ send_ldap_error( op, rs, LDAP_REFERRAL,
+ "DNS SRV generated referrals" );
+ rs->sr_ref = NULL;
+ rc = LDAP_REFERRAL;
+
+done:
+ if( domain != NULL ) ch_free( domain );
+ if( hostlist != NULL ) ch_free( hostlist );
+ if( hosts != NULL ) ldap_charray_free( hosts );
+ ber_bvarray_free( urls );
+ return rc;
+}