Adding upstream version 2.4.57+dfsg.upstream/2.4.57+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 240 insertions, 0 deletions

diff --git a/servers/slapd/back-dnssrv/search.c b/servers/slapd/back-dnssrv/search.c
new file mode 100644
index 0000000..aa1d204
--- /dev/null
+++ b/servers/slapd/back-dnssrv/search.c
@@ -0,0 +1,240 @@
+/* search.c - DNS SRV backend search function */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2021 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/socket.h>
+#include <ac/string.h>
+#include <ac/time.h>
+
+#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;
+}