From b527294153be3b79563c82c66102adc0004736c0 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Mon, 15 Apr 2024 19:54:12 +0200
Subject: Adding upstream version 2.6.7+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 servers/slapd/back-wt/compare.c | 154 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 servers/slapd/back-wt/compare.c

(limited to 'servers/slapd/back-wt/compare.c')

diff --git a/servers/slapd/back-wt/compare.c b/servers/slapd/back-wt/compare.c
new file mode 100644
index 0000000..038b273
--- /dev/null
+++ b/servers/slapd/back-wt/compare.c
@@ -0,0 +1,154 @@
+/* OpenLDAP WiredTiger backend */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2002-2022 The OpenLDAP Foundation.
+ * 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 developed by HAMANO Tsukasa <hamano@osstech.co.jp>
+ * based on back-bdb for inclusion in OpenLDAP Software.
+ * WiredTiger is a product of MongoDB Inc.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <ac/string.h>
+
+#include "back-wt.h"
+#include "slap-config.h"
+
+int
+wt_compare( Operation *op, SlapReply *rs )
+{
+    struct wt_info *wi = (struct wt_info *) op->o_bd->be_private;
+	Entry *e = NULL;
+	int manageDSAit = get_manageDSAit( op );
+	int rc;
+	wt_ctx *wc = NULL;
+
+	Debug( LDAP_DEBUG_ARGS, "==> wt_compare: %s\n",
+		   op->o_req_dn.bv_val );
+
+	wc = wt_ctx_get(op, wi);
+	if( !wc ){
+		Debug( LDAP_DEBUG_ANY, "wt_compare: wt_ctx_get failed\n" );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+        send_ldap_result( op, rs );
+        return rs->sr_err;
+	}
+
+	rc = wt_dn2entry(op->o_bd, wc, &op->o_req_ndn, &e);
+	switch( rc ) {
+	case 0:
+	case WT_NOTFOUND:
+		break;
+	default:
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+
+	if ( rc == WT_NOTFOUND ||
+		 (!manageDSAit && e && is_entry_glue( e ) )) {
+
+		if ( !e ) {
+			rc = wt_dn2aentry(op->o_bd, wc, &op->o_req_ndn, &e);
+			switch( rc ) {
+			case 0:
+				break;
+			case WT_NOTFOUND:
+				rs->sr_err = LDAP_NO_SUCH_OBJECT;
+				goto return_results;
+			default:
+				Debug( LDAP_DEBUG_ANY, "wt_compare: wt_dn2aentry failed (%d)\n",
+					   rc );
+				rs->sr_err = LDAP_OTHER;
+				rs->sr_text = "internal error";
+				goto return_results;
+			}
+		}
+
+		/* return referral only if "disclose" is granted on the object */
+		if ( ! access_allowed( op, e, slap_schema.si_ad_entry,
+							   NULL, ACL_DISCLOSE, NULL ) )
+		{
+			rs->sr_err = LDAP_NO_SUCH_OBJECT;
+		} else {
+			rs->sr_matched = ch_strdup( e->e_dn );
+			if ( is_entry_referral( e )) {
+				BerVarray ref = get_entry_referrals( op, e );
+				rs->sr_ref = referral_rewrite( ref,
+											   &e->e_name,
+											   &op->o_req_dn,
+											   LDAP_SCOPE_DEFAULT );
+				ber_bvarray_free( ref );
+			} else {
+				rs->sr_ref = NULL;
+			}
+			rs->sr_err = LDAP_REFERRAL;
+		}
+		rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED;
+		send_ldap_result( op, rs );
+		goto done;
+	}
+
+	if (!manageDSAit && is_entry_referral( e ) ) {
+		/* return referral only if "disclose" is granted on the object */
+		if ( !access_allowed( op, e, slap_schema.si_ad_entry,
+							  NULL, ACL_DISCLOSE, NULL ) )
+		{
+			rs->sr_err = LDAP_NO_SUCH_OBJECT;
+		} else {
+			/* entry is a referral, don't allow compare */
+			rs->sr_ref = get_entry_referrals( op, e );
+			rs->sr_err = LDAP_REFERRAL;
+			rs->sr_matched = e->e_name.bv_val;
+		}
+
+		Debug( LDAP_DEBUG_TRACE, "entry is referral\n" );
+
+		send_ldap_result( op, rs );
+
+		ber_bvarray_free( rs->sr_ref );
+		rs->sr_ref = NULL;
+		rs->sr_matched = NULL;
+		goto done;
+	}
+
+	rs->sr_err = slap_compare_entry( op, e, op->orc_ava );
+
+return_results:
+	send_ldap_result( op, rs );
+
+	switch ( rs->sr_err ) {
+	case LDAP_COMPARE_FALSE:
+	case LDAP_COMPARE_TRUE:
+		rs->sr_err = LDAP_SUCCESS;
+		break;
+	}
+
+done:
+	if ( e != NULL ) {
+		wt_entry_return( e );
+	}
+    return rs->sr_err;
+}
+
+/*
+ * Local variables:
+ * indent-tabs-mode: t
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ */
-- 
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