servers/slapd/back-sock/compare.c

   1 /* compare.c - sock backend compare function */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2024 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Brian Candler for inclusion
  18  * in OpenLDAP Software.
  19  */
  20
  21 #include "portable.h"
  22
  23 #include <stdio.h>
  24
  25 #include <ac/string.h>
  26 #include <ac/socket.h>
  27
  28 #include "slap.h"
  29 #include "back-sock.h"
  30 #include "ldif.h"
  31
  32 int
  33 sock_back_compare(
  34     Operation   *op,
  35     SlapReply   *rs )
  36 {
  37         struct sockinfo *si = (struct sockinfo *) op->o_bd->be_private;
  38         AttributeDescription *entry = slap_schema.si_ad_entry;
  39         Entry e;
  40         FILE                    *fp;
  41         char *text;
  42
  43         e.e_id = NOID;
  44         e.e_name = op->o_req_dn;
  45         e.e_nname = op->o_req_ndn;
  46         e.e_attrs = NULL;
  47         e.e_ocflags = 0;
  48         e.e_bv.bv_len = 0;
  49         e.e_bv.bv_val = NULL;
  50         e.e_private = NULL;
  51
  52         if ( ! access_allowed( op, &e,
  53                 entry, NULL, ACL_COMPARE, NULL ) )
  54         {
  55                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS, NULL );
  56                 return -1;
  57         }
  58
  59         if ( (fp = opensock( si->si_sockpath )) == NULL ) {
  60                 send_ldap_error( op, rs, LDAP_OTHER,
  61                     "could not open socket" );
  62                 return( -1 );
  63         }
  64
  65         /* write out the request to the compare process */
  66         fprintf( fp, "COMPARE\n" );
  67         fprintf( fp, "msgid: %ld\n", (long) op->o_msgid );
  68         sock_print_conn( fp, op->o_conn, si );
  69         sock_print_suffixes( fp, op->o_bd );
  70         fprintf( fp, "dn: %s\n", op->o_req_dn.bv_val );
  71         /* could be binary */
  72         text = ldif_put_wrap( LDIF_PUT_VALUE,
  73                 op->orc_ava->aa_desc->ad_cname.bv_val,
  74                 op->orc_ava->aa_value.bv_val,
  75                 op->orc_ava->aa_value.bv_len, LDIF_LINE_WIDTH_MAX );
  76         if ( text ) {
  77                 fprintf( fp, "%s\n", text );
  78                 ber_memfree( text );
  79         } else {
  80                 fprintf( fp, "\n\n" );
  81         }
  82
  83         /* read in the result and send it along */
  84         sock_read_and_send_results( op, rs, fp );
  85
  86         fclose( fp );
  87         return( 0 );
  88 }