/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 1999-2021 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 file LICENSE in the
 * top-level directory of the distribution or, alternatively, at
 * <http://www.OpenLDAP.org/license.html>.
 */

#include "portable.h"

#include <stdio.h>

#include "ac/stdlib.h"

#include "ac/ctype.h"
#include "ac/param.h"
#include "ac/socket.h"
#include "ac/string.h"
#include "ac/unistd.h"
#include "ac/wait.h"

#include "ldap.h"
#include "lutil.h"

#include "slapd-common.h"

#define LOOPS	100
#define RETRIES 0

static void
do_modify( char *uri, char *manager, struct berval *passwd,
		char *entry, char *attr, char *value, int maxloop,
		int maxretries, int delay, int friendly, int chaserefs );


static void
usage( char *name )
{
        fprintf( stderr,
		"usage: %s "
		"-H <uri> | ([-h <host>] -p <port>) "
		"-D <manager> "
		"-w <passwd> "
		"-e <entry> "
		"[-i <ignore>] "
		"[-l <loops>] "
		"[-L <outerloops>] "
		"[-r <maxretries>] "
		"[-t <delay>] "
		"[-F] "
		"[-C]\n",
			name );
	exit( EXIT_FAILURE );
}

int
main( int argc, char **argv )
{
	int		i;
	char		*uri = NULL;
	char		*host = "localhost";
	int		port = -1;
	char		*manager = NULL;
	struct berval	passwd = { 0, NULL };
	char		*entry = NULL;
	char		*ava = NULL;
	char		*value = NULL;
	int		loops = LOOPS;
	int		outerloops = 1;
	int		retries = RETRIES;
	int		delay = 0;
	int		friendly = 0;
	int		chaserefs = 0;

	tester_init( "slapd-modify", TESTER_MODIFY );

	while ( ( i = getopt( argc, argv, "a:CD:e:FH:h:i:L:l:p:r:t:w:" ) ) != EOF )
	{
		switch ( i ) {
		case 'C':
			chaserefs++;
			break;

		case 'F':
			friendly++;
			break;

		case 'H':		/* the server uri */
			uri = strdup( optarg );
			break;

		case 'h':		/* the servers host */
			host = strdup( optarg );
			break;

		case 'i':
			/* ignored (!) by now */
			break;

		case 'p':		/* the servers port */
			if ( lutil_atoi( &port, optarg ) != 0 ) {
				usage( argv[0] );
			}
			break;

		case 'D':		/* the servers manager */
			manager = strdup( optarg );
			break;

		case 'w':		/* the server managers password */
			passwd.bv_val = strdup( optarg );
			passwd.bv_len = strlen( optarg );
			memset( optarg, '*', passwd.bv_len );
			break;

		case 'e':		/* entry to modify */
			entry = strdup( optarg );
			break;

		case 'a':
			ava = strdup( optarg );
			break;

		case 'l':		/* the number of loops */
			if ( lutil_atoi( &loops, optarg ) != 0 ) {
				usage( argv[0] );
			}
			break;

		case 'L':		/* the number of outerloops */
			if ( lutil_atoi( &outerloops, optarg ) != 0 ) {
				usage( argv[0] );
			}
			break;

		case 'r':		/* number of retries */
			if ( lutil_atoi( &retries, optarg ) != 0 ) {
				usage( argv[0] );
			}
			break;

		case 't':		/* delay in seconds */
			if ( lutil_atoi( &delay, optarg ) != 0 ) {
				usage( argv[0] );
			}
			break;

		default:
			usage( argv[0] );
			break;
		}
	}

	if (( entry == NULL ) || ( ava == NULL ) || ( port == -1 && uri == NULL ))
		usage( argv[0] );

	if ( *entry == '\0' ) {

		fprintf( stderr, "%s: invalid EMPTY entry DN.\n",
				argv[0] );
		exit( EXIT_FAILURE );

	}
	if ( *ava  == '\0' ) {
		fprintf( stderr, "%s: invalid EMPTY AVA.\n",
				argv[0] );
		exit( EXIT_FAILURE );
	}
	
	if ( !( value = strchr( ava, ':' ))) {
		fprintf( stderr, "%s: invalid AVA.\n",
				argv[0] );
		exit( EXIT_FAILURE );
	}
	*value++ = '\0'; 
	while ( *value && isspace( (unsigned char) *value ))
		value++;

	uri = tester_uri( uri, host, port );

	for ( i = 0; i < outerloops; i++ ) {
		do_modify( uri, manager, &passwd, entry, ava, value,
				loops, retries, delay, friendly, chaserefs );
	}

	exit( EXIT_SUCCESS );
}


static void
do_modify( char *uri, char *manager,
	struct berval *passwd, char *entry, char* attr, char* value,
	int maxloop, int maxretries, int delay, int friendly, int chaserefs )
{
	LDAP	*ld = NULL;
	int  	i = 0, do_retry = maxretries;
	int     rc = LDAP_SUCCESS;

	struct ldapmod mod;
	struct ldapmod *mods[2];
	char *values[2];
	int version = LDAP_VERSION3;

	values[0] = value;
	values[1] = NULL;
	mod.mod_op = LDAP_MOD_ADD;
	mod.mod_type = attr;
	mod.mod_values = values;
	mods[0] = &mod;
	mods[1] = NULL;

retry:;
	ldap_initialize( &ld, uri );
	if ( ld == NULL ) {
		tester_perror( "ldap_initialize", NULL );
		exit( EXIT_FAILURE );
	}

	(void) ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, &version ); 
	(void) ldap_set_option( ld, LDAP_OPT_REFERRALS,
		chaserefs ? LDAP_OPT_ON : LDAP_OPT_OFF );

	if ( do_retry == maxretries ) {
		fprintf( stderr, "PID=%ld - Modify(%d): entry=\"%s\".\n",
			(long) pid, maxloop, entry );
	}

	rc = ldap_sasl_bind_s( ld, manager, LDAP_SASL_SIMPLE, passwd, NULL, NULL, NULL );
	if ( rc != LDAP_SUCCESS ) {
		tester_ldap_error( ld, "ldap_sasl_bind_s", NULL );
		switch ( rc ) {
		case LDAP_BUSY:
		case LDAP_UNAVAILABLE:
			if ( do_retry > 0 ) {
				do_retry--;
				if ( delay > 0 ) {
				    sleep( delay );
				}
				goto retry;
			}
		/* fallthru */
		default:
			break;
		}
		exit( EXIT_FAILURE );
	}

	for ( ; i < maxloop; i++ ) {
		mod.mod_op = LDAP_MOD_ADD;
		rc = ldap_modify_ext_s( ld, entry, mods, NULL, NULL );
		if ( rc != LDAP_SUCCESS ) {
			tester_ldap_error( ld, "ldap_modify_ext_s", NULL );
			switch ( rc ) {
			case LDAP_TYPE_OR_VALUE_EXISTS:
				/* NOTE: this likely means
				 * the second modify failed
				 * during the previous round... */
				if ( !friendly ) {
					goto done;
				}
				break;

			case LDAP_BUSY:
			case LDAP_UNAVAILABLE:
				if ( do_retry > 0 ) {
					do_retry--;
					goto retry;
				}
				/* fall thru */

			default:
				goto done;
			}
		}
		
		mod.mod_op = LDAP_MOD_DELETE;
		rc = ldap_modify_ext_s( ld, entry, mods, NULL, NULL );
		if ( rc != LDAP_SUCCESS ) {
			tester_ldap_error( ld, "ldap_modify_ext_s", NULL );
			switch ( rc ) {
			case LDAP_NO_SUCH_ATTRIBUTE:
				/* NOTE: this likely means
				 * the first modify failed
				 * during the previous round... */
				if ( !friendly ) {
					goto done;
				}
				break;

			case LDAP_BUSY:
			case LDAP_UNAVAILABLE:
				if ( do_retry > 0 ) {
					do_retry--;
					goto retry;
				}
				/* fall thru */

			default:
				goto done;
			}
		}

	}

done:;
	fprintf( stderr, "  PID=%ld - Modify done (%d).\n", (long) pid, rc );

	ldap_unbind_ext( ld, NULL, NULL );
}


