/* $OpenLDAP: pkg/ldap/libraries/libldap/modify.c,v 1.21.2.4 2007/01/02 21:43:49 kurt Exp $ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 1998-2007 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>.
 */
/* Portions Copyright (c) 1990 Regents of the University of Michigan.
 * All rights reserved.
 */
/* Portions Copyright (C) The Internet Society (1997)
 * ASN.1 fragments are from RFC 2251; see RFC for full legal notices.
 */

#include "portable.h"

#include <stdio.h>

#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>

#include "ldap-int.h"

/*
 * ldap_modify_ext - initiate an ldap extended modify operation.
 *
 * Parameters:
 *
 *	ld		LDAP descriptor
 *	dn		DN of the object to modify
 *	mods		List of modifications to make.  This is null-terminated
 *			array of struct ldapmod's, specifying the modifications
 *			to perform.
 *	sctrls	Server Controls
 *	cctrls	Client Controls
 *	msgidp	Message ID pointer
 *
 * Example:
 *	LDAPMod	*mods[] = { 
 *			{ LDAP_MOD_ADD, "cn", { "babs jensen", "babs", 0 } },
 *			{ LDAP_MOD_REPLACE, "sn", { "babs jensen", "babs", 0 } },
 *			{ LDAP_MOD_DELETE, "ou", 0 },
 *			{ LDAP_MOD_INCREMENT, "uidNumber, { "1", 0 } }
 *			0
 *		}
 *	rc=  ldap_modify_ext( ld, dn, mods, sctrls, cctrls, &msgid );
 */
int
ldap_modify_ext( LDAP *ld,
	LDAP_CONST char *dn,
	LDAPMod **mods,
	LDAPControl **sctrls,
	LDAPControl **cctrls,
	int *msgidp )
{
	BerElement	*ber;
	int		i, rc;
	ber_int_t	id;

	/*
	 * A modify request looks like this:
	 *	ModifyRequet ::= SEQUENCE {
	 *		object		DistinguishedName,
	 *		modifications	SEQUENCE OF SEQUENCE {
	 *			operation	ENUMERATED {
	 *				add	(0),
	 *				delete (1),
	 *				replace	(2),
	 *				increment (3) -- extension
	 *			},
	 *			modification	SEQUENCE {
	 *				type	AttributeType,
	 *				values	SET OF AttributeValue
	 *			}
	 *		}
	 *	}
	 */

	Debug( LDAP_DEBUG_TRACE, "ldap_modify_ext\n", 0, 0, 0 );

	/* check client controls */
	rc = ldap_int_client_controls( ld, cctrls );
	if( rc != LDAP_SUCCESS ) return rc;

	/* create a message to send */
	if ( (ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
		return( LDAP_NO_MEMORY );
	}

	LDAP_NEXT_MSGID( ld, id );
	rc = ber_printf( ber, "{it{s{" /*}}}*/, id, LDAP_REQ_MODIFY, dn );
	if ( rc == -1 ) {
		ld->ld_errno = LDAP_ENCODING_ERROR;
		ber_free( ber, 1 );
		return( ld->ld_errno );
	}

	/* allow mods to be NULL ("touch") */
	if ( mods ) {
		/* for each modification to be performed... */
		for ( i = 0; mods[i] != NULL; i++ ) {
			if (( mods[i]->mod_op & LDAP_MOD_BVALUES) != 0 ) {
				rc = ber_printf( ber, "{e{s[V]N}N}",
				    (ber_int_t) ( mods[i]->mod_op & ~LDAP_MOD_BVALUES ),
				    mods[i]->mod_type, mods[i]->mod_bvalues );
			} else {
				rc = ber_printf( ber, "{e{s[v]N}N}",
					(ber_int_t) mods[i]->mod_op,
				    mods[i]->mod_type, mods[i]->mod_values );
			}

			if ( rc == -1 ) {
				ld->ld_errno = LDAP_ENCODING_ERROR;
				ber_free( ber, 1 );
				return( ld->ld_errno );
			}
		}
	}

	if ( ber_printf( ber, /*{{*/ "N}N}" ) == -1 ) {
		ld->ld_errno = LDAP_ENCODING_ERROR;
		ber_free( ber, 1 );
		return( ld->ld_errno );
	}

	/* Put Server Controls */
	if( ldap_int_put_controls( ld, sctrls, ber ) != LDAP_SUCCESS ) {
		ber_free( ber, 1 );
		return ld->ld_errno;
	}

	if ( ber_printf( ber, /*{*/ "N}" ) == -1 ) {
		ld->ld_errno = LDAP_ENCODING_ERROR;
		ber_free( ber, 1 );
		return( ld->ld_errno );
	}

	/* send the message */
	*msgidp = ldap_send_initial_request( ld, LDAP_REQ_MODIFY, dn, ber, id );
	return( *msgidp < 0 ? ld->ld_errno : LDAP_SUCCESS );
}

/*
 * ldap_modify - initiate an ldap modify operation.
 *
 * Parameters:
 *
 *	ld		LDAP descriptor
 *	dn		DN of the object to modify
 *	mods		List of modifications to make.  This is null-terminated
 *			array of struct ldapmod's, specifying the modifications
 *			to perform.
 *
 * Example:
 *	LDAPMod	*mods[] = { 
 *			{ LDAP_MOD_ADD, "cn", { "babs jensen", "babs", 0 } },
 *			{ LDAP_MOD_REPLACE, "sn", { "babs jensen", "babs", 0 } },
 *			{ LDAP_MOD_DELETE, "ou", 0 },
 *			{ LDAP_MOD_INCREMENT, "uidNumber, { "1", 0 } }
 *			0
 *		}
 *	msgid = ldap_modify( ld, dn, mods );
 */
int
ldap_modify( LDAP *ld, LDAP_CONST char *dn, LDAPMod **mods )
{
	int rc, msgid;

	Debug( LDAP_DEBUG_TRACE, "ldap_modify\n", 0, 0, 0 );

	rc = ldap_modify_ext( ld, dn, mods, NULL, NULL, &msgid );

	if ( rc != LDAP_SUCCESS )
		return -1;

	return msgid;
}

int
ldap_modify_ext_s( LDAP *ld, LDAP_CONST char *dn,
	LDAPMod **mods, LDAPControl **sctrl, LDAPControl **cctrl )
{
	int		rc;
	int		msgid;
	LDAPMessage	*res;

	rc = ldap_modify_ext( ld, dn, mods, sctrl, cctrl, &msgid );

	if ( rc != LDAP_SUCCESS )
		return( rc );

	if ( ldap_result( ld, msgid, 1, (struct timeval *) NULL, &res ) == -1 )
		return( ld->ld_errno );

	return( ldap_result2error( ld, res, 1 ) );
}

int
ldap_modify_s( LDAP *ld, LDAP_CONST char *dn, LDAPMod **mods )
{
	return ldap_modify_ext_s( ld, dn, mods, NULL, NULL );
}