/*
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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 Netscape are
 * Copyright (C) 1998-1999 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s):
 */
/*
 *  Copyright (c) 1990 Regents of the University of Michigan.
 *  All rights reserved.
 */
/*
 *  modify.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_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", { "jensen", 0 } },
 *                      0
 *              }
 *      msgid = ldap_modify( ld, dn, mods );
 */
int
LDAP_CALL
ldap_modify( LDAP *ld, const char *dn, LDAPMod **mods )
{
        int             msgid;

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

        if ( ldap_modify_ext( ld, dn, mods, NULL, NULL, &msgid )
            == LDAP_SUCCESS ) {
                return( msgid );
        } else {
                return( -1 );   /* error is in ld handle */
        }
}

int
LDAP_CALL
ldap_modify_ext( LDAP *ld, const char *dn, LDAPMod **mods,
    LDAPControl **serverctrls, LDAPControl **clientctrls, int *msgidp )
{
        BerElement      *ber;
        int             i, rc, lderr;

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

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

        if ( !NSLDAPI_VALID_LDAP_POINTER( ld )) {
                return( LDAP_PARAM_ERROR );
        }
        if ( !NSLDAPI_VALID_LDAPMESSAGE_POINTER( msgidp ))
        {
                LDAP_SET_LDERRNO( ld, LDAP_PARAM_ERROR, NULL, NULL );
                return( LDAP_PARAM_ERROR );
        }

        if ( !NSLDAPI_VALID_NONEMPTY_LDAPMOD_ARRAY( mods )) {
                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 );

        /* see if we should add to the cache */
        if ( ld->ld_cache_on && ld->ld_cache_modify != NULL ) {
                LDAP_MUTEX_LOCK( ld, LDAP_CACHE_LOCK );
                if ( (rc = (ld->ld_cache_modify)( ld, *msgidp, LDAP_REQ_MODIFY,
                    dn, mods )) != 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{", *msgidp, LDAP_REQ_MODIFY, dn )
            == -1 ) {
                lderr = LDAP_ENCODING_ERROR;
                LDAP_SET_LDERRNO( ld, lderr, NULL, NULL );
                ber_free( ber, 1 );
                return( lderr );
        }

        /* 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]}}",
                            mods[i]->mod_op & ~LDAP_MOD_BVALUES,
                            mods[i]->mod_type, mods[i]->mod_bvalues );
                } else {
                        rc = ber_printf( ber, "{e{s[v]}}", mods[i]->mod_op,
                            mods[i]->mod_type, mods[i]->mod_values );
                }

                if ( rc == -1 ) {
                        lderr = LDAP_ENCODING_ERROR;
                        LDAP_SET_LDERRNO( ld, lderr, NULL, NULL );
                        ber_free( ber, 1 );
                        return( lderr );
                }
        }

        if ( ber_printf( ber, "}}" ) == -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_MODIFY,
                (char *)dn, ber );
        *msgidp = rc;
        return( rc < 0 ? LDAP_GET_LDERRNO( ld, NULL, NULL ) : LDAP_SUCCESS );
}

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

int
LDAP_CALL
ldap_modify_ext_s( LDAP *ld, const char *dn, LDAPMod **mods,
    LDAPControl **serverctrls, LDAPControl **clientctrls )
{
        int             msgid, err;
        LDAPMessage     *res;

        if (( err = ldap_modify_ext( ld, dn, mods, 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 ) );
}