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diff --git a/clients/tools/ldapcompare.c b/clients/tools/ldapcompare.c
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+/* ldapcompare.c -- LDAP compare tool */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * Portions Copyright 1998-2003 Kurt D. Zeilenga.
+ * Portions Copyright 1998-2001 Net Boolean Incorporated.
+ * 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>.
+ */
+/* Portions Copyright (c) 1992-1996 Regents of the University of Michigan.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that this notice is preserved and that due credit is given
+ * to the University of Michigan at Ann Arbor. The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission. This
+ * software is provided ``as is'' without express or implied warranty.
+ */
+/* Portions Copyright 2002, F5 Networks, Inc, All rights reserved.
+ * This software is not subject to any license of F5 Networks.
+ * This is free software; you can redistribute and use it
+ * under the same terms as OpenLDAP itself.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was originally developed by Jeff Costlow (F5 Networks)
+ * based, in part, on existing LDAP tools and adapted for inclusion
+ * into OpenLDAP Software by Kurt D. Zeilenga.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/stdlib.h>
+
+#include <ac/ctype.h>
+#include <ac/string.h>
+#include <ac/unistd.h>
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/time.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif
+
+#include <ldap.h>
+
+#include "lutil.h"
+#include "lutil_ldap.h"
+#include "ldap_defaults.h"
+
+#include "common.h"
+
+
+static int quiet = 0;
+
+
+void
+usage( void )
+{
+ fprintf( stderr, _("usage: %s [options] DN <attr:value|attr::b64value>\n"), prog);
+ fprintf( stderr, _("where:\n"));
+ fprintf( stderr, _(" DN\tDistinguished Name\n"));
+ fprintf( stderr, _(" attr\tassertion attribute\n"));
+ fprintf( stderr, _(" value\tassertion value\n"));
+ fprintf( stderr, _(" b64value\tbase64 encoding of assertion value\n"));
+
+ fprintf( stderr, _("Compare options:\n"));
+ fprintf( stderr, _(" -E [!]<ext>[=<extparam>] compare extensions (! indicates criticality)\n"));
+ fprintf( stderr, _(" !dontUseCopy (Don't Use Copy)\n"));
+ fprintf( stderr, _(" -M enable Manage DSA IT control (-MM to make critical)\n"));
+ fprintf( stderr, _(" -P version protocol version (default: 3)\n"));
+ fprintf( stderr, _(" -z Quiet mode,"
+ " don't print anything, use return values\n"));
+ tool_common_usage();
+ exit( EXIT_FAILURE );
+}
+
+static int docompare LDAP_P((
+ LDAP *ld,
+ char *dn,
+ char *attr,
+ struct berval *bvalue,
+ int quiet,
+ LDAPControl **sctrls,
+ LDAPControl **cctrls));
+
+
+const char options[] = "z"
+ "Cd:D:e:h:H:IMnNO:o:p:P:QR:U:vVw:WxX:y:Y:Z";
+
+#ifdef LDAP_CONTROL_DONTUSECOPY
+int dontUseCopy = 0;
+#endif
+
+int
+handle_private_option( int i )
+{
+ char *control, *cvalue;
+ int crit;
+
+ switch ( i ) {
+ case 'E': /* compare extensions */
+ if( protocol == LDAP_VERSION2 ) {
+ fprintf( stderr, _("%s: -E incompatible with LDAPv%d\n"),
+ prog, protocol );
+ exit( EXIT_FAILURE );
+ }
+
+ /* should be extended to support comma separated list of
+ * [!]key[=value] parameters, e.g. -E !foo,bar=567
+ */
+
+ crit = 0;
+ cvalue = NULL;
+ if( optarg[0] == '!' ) {
+ crit = 1;
+ optarg++;
+ }
+
+ control = optarg;
+ if ( (cvalue = strchr( control, '=' )) != NULL ) {
+ *cvalue++ = '\0';
+ }
+
+#ifdef LDAP_CONTROL_DONTUSECOPY
+ if ( strcasecmp( control, "dontUseCopy" ) == 0 ) {
+ if( dontUseCopy ) {
+ fprintf( stderr,
+ _("dontUseCopy control previously specified\n"));
+ exit( EXIT_FAILURE );
+ }
+ if( cvalue != NULL ) {
+ fprintf( stderr,
+ _("dontUseCopy: no control value expected\n") );
+ usage();
+ }
+ if( !crit ) {
+ fprintf( stderr,
+ _("dontUseCopy: critical flag required\n") );
+ usage();
+ }
+
+ dontUseCopy = 1 + crit;
+ } else
+#endif
+ {
+ fprintf( stderr,
+ _("Invalid compare extension name: %s\n"), control );
+ usage();
+ }
+ break;
+
+ case 'z':
+ quiet = 1;
+ break;
+
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+
+int
+main( int argc, char **argv )
+{
+ char *compdn = NULL, *attrs = NULL;
+ char *sep;
+ int rc;
+ LDAP *ld = NULL;
+ struct berval bvalue = { 0, NULL };
+ int i = 0;
+ LDAPControl c[1];
+
+
+ tool_init( TOOL_COMPARE );
+ prog = lutil_progname( "ldapcompare", argc, argv );
+
+ tool_args( argc, argv );
+
+ if ( argc - optind != 2 ) {
+ usage();
+ }
+
+ compdn = argv[optind++];
+ attrs = argv[optind++];
+
+ /* user passed in only 2 args, the last one better be in
+ * the form attr:value or attr::b64value
+ */
+ sep = strchr(attrs, ':');
+ if (!sep) {
+ usage();
+ }
+
+ *sep++='\0';
+ if ( *sep != ':' ) {
+ bvalue.bv_val = strdup( sep );
+ bvalue.bv_len = strlen( bvalue.bv_val );
+
+ } else {
+ /* it's base64 encoded. */
+ bvalue.bv_val = malloc( strlen( &sep[1] ));
+ bvalue.bv_len = lutil_b64_pton( &sep[1],
+ (unsigned char *) bvalue.bv_val, strlen( &sep[1] ));
+
+ if (bvalue.bv_len == (ber_len_t)-1) {
+ fprintf(stderr, _("base64 decode error\n"));
+ exit(-1);
+ }
+ }
+
+ ld = tool_conn_setup( 0, 0 );
+
+ tool_bind( ld );
+
+ if ( 0
+#ifdef LDAP_CONTROL_DONTUSECOPY
+ || dontUseCopy
+#endif
+ )
+ {
+#ifdef LDAP_CONTROL_DONTUSECOPY
+ if ( dontUseCopy ) {
+ c[i].ldctl_oid = LDAP_CONTROL_DONTUSECOPY;
+ c[i].ldctl_value.bv_val = NULL;
+ c[i].ldctl_value.bv_len = 0;
+ c[i].ldctl_iscritical = dontUseCopy > 1;
+ i++;
+ }
+#endif
+ }
+
+ tool_server_controls( ld, c, i );
+
+ if ( verbose ) {
+ fprintf( stderr, _("DN:%s, attr:%s, value:%s\n"),
+ compdn, attrs, sep );
+ }
+
+ rc = docompare( ld, compdn, attrs, &bvalue, quiet, NULL, NULL );
+
+ free( bvalue.bv_val );
+
+ tool_exit( ld, rc );
+}
+
+
+static int docompare(
+ LDAP *ld,
+ char *dn,
+ char *attr,
+ struct berval *bvalue,
+ int quiet,
+ LDAPControl **sctrls,
+ LDAPControl **cctrls )
+{
+ int rc, msgid, code;
+ LDAPMessage *res;
+ char *matcheddn;
+ char *text;
+ char **refs;
+ LDAPControl **ctrls = NULL;
+
+ if ( dont ) {
+ return LDAP_SUCCESS;
+ }
+
+ rc = ldap_compare_ext( ld, dn, attr, bvalue,
+ sctrls, cctrls, &msgid );
+ if ( rc == -1 ) {
+ return( rc );
+ }
+
+ for ( ; ; ) {
+ struct timeval tv;
+
+ tv.tv_sec = 0;
+ tv.tv_usec = 100000;
+
+ if ( tool_check_abandon( ld, msgid ) ) {
+ return LDAP_CANCELLED;
+ }
+
+ rc = ldap_result( ld, LDAP_RES_ANY, LDAP_MSG_ALL, &tv, &res );
+ if ( rc < 0 ) {
+ tool_perror( "ldap_result", rc, NULL, NULL, NULL, NULL );
+ return rc;
+ }
+
+ if ( rc != 0 ) {
+ break;
+ }
+ }
+
+ rc = ldap_parse_result( ld, res, &code, &matcheddn, &text, &refs, &ctrls, 1 );
+
+ if( rc != LDAP_SUCCESS ) {
+ fprintf( stderr, "%s: ldap_parse_result: %s (%d)\n",
+ prog, ldap_err2string( rc ), rc );
+ return rc;
+ }
+
+ if ( !quiet && ( verbose || ( code != LDAP_SUCCESS && code != LDAP_COMPARE_TRUE && code != LDAP_COMPARE_FALSE )||
+ (matcheddn && *matcheddn) || (text && *text) || (refs && *refs) ) )
+ {
+ printf( _("Compare Result: %s (%d)\n"),
+ ldap_err2string( code ), code );
+
+ if( text && *text ) {
+ printf( _("Additional info: %s\n"), text );
+ }
+
+ if( matcheddn && *matcheddn ) {
+ printf( _("Matched DN: %s\n"), matcheddn );
+ }
+
+ if( refs ) {
+ int i;
+ for( i=0; refs[i]; i++ ) {
+ printf(_("Referral: %s\n"), refs[i] );
+ }
+ }
+ }
+
+ /* if we were told to be quiet, use the return value. */
+ if ( !quiet ) {
+ if ( code == LDAP_COMPARE_TRUE ) {
+ printf(_("TRUE\n"));
+ } else if ( code == LDAP_COMPARE_FALSE ) {
+ printf(_("FALSE\n"));
+ } else {
+ printf(_("UNDEFINED\n"));
+ }
+ }
+
+ if ( ctrls ) {
+ tool_print_ctrls( ld, ctrls );
+ ldap_controls_free( ctrls );
+ }
+
+ ber_memfree( text );
+ ber_memfree( matcheddn );
+ ber_memvfree( (void **) refs );
+
+ return( code );
+}
+