text: /* modify.c - shell backend modify function */
  /* $OpenLDAP$ */
  /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   *
   * Copyright 1998-2019 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) 1995 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.
   */
  /* ACKNOWLEDGEMENTS:
   * This work was originally developed by the University of Michigan
   * (as part of U-MICH LDAP).
   */
  
  #include "portable.h"
  
  #include <stdio.h>
  
  #include <ac/string.h>
  #include <ac/socket.h>
  
  #include "slap.h"
  #include "shell.h"
  #include "ldif.h"
  
  int
  shell_back_modify(
      Operation	*op,
      SlapReply	*rs )
  {
  	Modification *mod;
  	struct shellinfo	*si = (struct shellinfo *) op->o_bd->be_private;
  	AttributeDescription *entry = slap_schema.si_ad_entry;
  	Modifications *ml  = op->orm_modlist;
  	Entry e;
  	FILE			*rfp, *wfp;
  	int			i;
  
  	if ( si->si_modify == NULL ) {
  		send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  		    "modify not implemented" );
  		return( -1 );
  	}
  
  	e.e_id = NOID;
  	e.e_name = op->o_req_dn;
  	e.e_nname = op->o_req_ndn;
  	e.e_attrs = NULL;
  	e.e_ocflags = 0;
  	e.e_bv.bv_len = 0;
  	e.e_bv.bv_val = NULL;
  	e.e_private = NULL;
  
  	if ( ! access_allowed( op, &e,
  		entry, NULL, ACL_WRITE, NULL ) )
  	{
  		send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS, NULL );
  		return -1;
  	}
  
  	if ( forkandexec( si->si_modify, &rfp, &wfp ) == (pid_t)-1 ) {
  		send_ldap_error( op, rs, LDAP_OTHER,
  		    "could not fork/exec" );
  		return( -1 );
  	}
  
  	/* write out the request to the modify process */
  	fprintf( wfp, "MODIFY\n" );
  	fprintf( wfp, "msgid: %ld\n", (long) op->o_msgid );
  	print_suffixes( wfp, op->o_bd );
  	fprintf( wfp, "dn: %s\n", op->o_req_dn.bv_val );
  	for ( ; ml != NULL; ml = ml->sml_next ) {
  		mod = &ml->sml_mod;
  
  		switch ( mod->sm_op ) {
  		case LDAP_MOD_ADD:
  			fprintf( wfp, "add: %s\n", mod->sm_desc->ad_cname.bv_val );
  			break;
  
  		case LDAP_MOD_DELETE:
  			fprintf( wfp, "delete: %s\n", mod->sm_desc->ad_cname.bv_val );
  			break;
  
  		case LDAP_MOD_REPLACE:
  			fprintf( wfp, "replace: %s\n", mod->sm_desc->ad_cname.bv_val );
  			break;
  		}
  
  		if( mod->sm_values != NULL ) {
  			for ( i = 0; mod->sm_values[i].bv_val != NULL; i++ ) {
  				char *out = ldif_put( LDIF_PUT_VALUE,
  					mod->sm_desc->ad_cname.bv_val,
  					mod->sm_values[i].bv_val,
  					mod->sm_values[i].bv_len );
  				if ( out ) {
  					fprintf( wfp, "%s", out );
  					ber_memfree( out );
  				}
  			}
  		}
  
  		fprintf( wfp, "-\n" );
  	}
  	fclose( wfp );
  
  	/* read in the results and send them along */
  	read_and_send_results( op, rs, rfp );
  	fclose( rfp );
  	return( 0 );
  }
  