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diff --git a/ldap/c-sdk/libldap/compare.c b/ldap/c-sdk/libldap/compare.c
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+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+/*
+ * Copyright (c) 1990 Regents of the University of Michigan.
+ * All rights reserved.
+ */
+/*
+ * compare.c
+ */
+
+#if 0
+#ifndef lint
+static char copyright[] = "@(#) Copyright (c) 1990 Regents of the University of Michigan.\nAll rights reserved.\n";
+#endif
+#endif
+
+#include "ldap-int.h"
+
+/*
+ * ldap_compare - perform an ldap compare operation. The dn
+ * of the entry to compare to and the attribute and value to compare (in
+ * attr and value) are supplied. The msgid of the response is returned.
+ *
+ * Example:
+ * ldap_compare( ld, "c=us@cn=bob", "userPassword", "secret" )
+ */
+int
+LDAP_CALL
+ldap_compare( LDAP *ld, const char *dn, const char *attr, const char *value )
+{
+ int msgid;
+ struct berval bv;
+
+ LDAPDebug( LDAP_DEBUG_TRACE, "ldap_compare\n", 0, 0, 0 );
+
+ bv.bv_val = (char *)value;
+ bv.bv_len = ( value == NULL ) ? 0 : strlen( value );
+
+ if ( ldap_compare_ext( ld, dn, attr, &bv, NULL, NULL, &msgid )
+ == LDAP_SUCCESS ) {
+ return( msgid );
+ } else {
+ return( -1 ); /* error is in ld handle */
+ }
+}
+
+int
+LDAP_CALL
+ldap_compare_ext( LDAP *ld, const char *dn, const char *attr,
+ const struct berval *bvalue, LDAPControl **serverctrls,
+ LDAPControl **clientctrls, int *msgidp )
+{
+ BerElement *ber;
+ int rc, lderr;
+
+ /* The compare request looks like this:
+ * CompareRequest ::= SEQUENCE {
+ * entry DistinguishedName,
+ * ava SEQUENCE {
+ * type AttributeType,
+ * value AttributeValue
+ * }
+ * }
+ * and must be wrapped in an LDAPMessage.
+ */
+
+ LDAPDebug( LDAP_DEBUG_TRACE, "ldap_compare_ext\n", 0, 0, 0 );
+
+ if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
+ return( LDAP_PARAM_ERROR );
+ }
+ if ( attr == NULL || bvalue == NULL || bvalue->bv_len == 0
+ || msgidp == NULL ) {
+ lderr = LDAP_PARAM_ERROR;
+ LDAP_SET_LDERRNO( ld, lderr, NULL, NULL );
+ return( lderr );
+ }
+
+ if ( dn == NULL ) {
+ dn = "";
+ }
+
+ LDAP_MUTEX_LOCK( ld, LDAP_MSGID_LOCK );
+ *msgidp = ++ld->ld_msgid;
+ LDAP_MUTEX_UNLOCK( ld, LDAP_MSGID_LOCK );
+
+ /* check the cache */
+ if ( ld->ld_cache_on && ld->ld_cache_compare != NULL ) {
+ LDAP_MUTEX_LOCK( ld, LDAP_CACHE_LOCK );
+ if ( (rc = (ld->ld_cache_compare)( ld, *msgidp,
+ LDAP_REQ_COMPARE, dn, attr, bvalue )) != 0 ) {
+ *msgidp = rc;
+ LDAP_MUTEX_UNLOCK( ld, LDAP_CACHE_LOCK );
+ return( LDAP_SUCCESS );
+ }
+ LDAP_MUTEX_UNLOCK( ld, LDAP_CACHE_LOCK );
+ }
+
+ /* create a message to send */
+ if (( lderr = nsldapi_alloc_ber_with_options( ld, &ber ))
+ != LDAP_SUCCESS ) {
+ return( lderr );
+ }
+
+ if ( ber_printf( ber, "{it{s{so}}", *msgidp, LDAP_REQ_COMPARE, dn,
+ attr, bvalue->bv_val, bvalue->bv_len )
+ == -1 ) {
+ lderr = LDAP_ENCODING_ERROR;
+ LDAP_SET_LDERRNO( ld, lderr, NULL, NULL );
+ ber_free( ber, 1 );
+ return( lderr );
+ }
+
+ if (( lderr = nsldapi_put_controls( ld, serverctrls, 1, ber ))
+ != LDAP_SUCCESS ) {
+ ber_free( ber, 1 );
+ return( lderr );
+ }
+
+ /* send the message */
+ rc = nsldapi_send_initial_request( ld, *msgidp, LDAP_REQ_COMPARE,
+ (char *)dn, ber );
+ *msgidp = rc;
+ return( rc < 0 ? LDAP_GET_LDERRNO( ld, NULL, NULL ) : LDAP_SUCCESS );
+}
+
+int
+LDAP_CALL
+ldap_compare_s( LDAP *ld, const char *dn, const char *attr,
+ const char *value )
+{
+ struct berval bv;
+
+ bv.bv_val = (char *)value;
+ bv.bv_len = ( value == NULL ) ? 0 : strlen( value );
+
+ return( ldap_compare_ext_s( ld, dn, attr, &bv, NULL, NULL ));
+}
+
+int
+LDAP_CALL
+ldap_compare_ext_s( LDAP *ld, const char *dn, const char *attr,
+ const struct berval *bvalue, LDAPControl **serverctrls,
+ LDAPControl **clientctrls )
+{
+ int err, msgid;
+ LDAPMessage *res;
+
+ if (( err = ldap_compare_ext( ld, dn, attr, bvalue, serverctrls,
+ clientctrls, &msgid )) != LDAP_SUCCESS ) {
+ return( err );
+ }
+
+ if ( ldap_result( ld, msgid, 1, (struct timeval *)NULL, &res )
+ == -1 ) {
+ return( LDAP_GET_LDERRNO( ld, NULL, NULL ) );
+ }
+
+ return( ldap_result2error( ld, res, 1 ) );
+}