git.sur5r.net Git - openldap/blob - servers/slapd/back-shell/compare.c

   1 /* compare.c - shell backend compare function */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/string.h>
  13 #include <ac/socket.h>
  14
  15 #include "slap.h"
  16 #include "shell.h"
  17
  18 int
  19 shell_back_compare(
  20     Operation   *op,
  21     SlapReply   *rs )
  22 {
  23         struct shellinfo        *si = (struct shellinfo *) op->o_bd->be_private;
  24         AttributeDescription *entry = slap_schema.si_ad_entry;
  25         Entry e;
  26         FILE                    *rfp, *wfp;
  27
  28         if ( si->si_compare == NULL ) {
  29                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
  30                     "compare not implemented" );
  31                 return( -1 );
  32         }
  33
  34         e.e_id = NOID;
  35         e.e_name = op->o_req_dn;
  36         e.e_nname = op->o_req_ndn;
  37         e.e_attrs = NULL;
  38         e.e_ocflags = 0;
  39         e.e_bv.bv_len = 0;
  40         e.e_bv.bv_val = NULL;
  41         e.e_private = NULL;
  42
  43         if ( ! access_allowed( op, &e,
  44                 entry, NULL, ACL_READ, NULL ) )
  45         {
  46                 send_ldap_error( op, rs, LDAP_INSUFFICIENT_ACCESS, NULL );
  47                 return -1;
  48         }
  49
  50         if ( forkandexec( si->si_compare, &rfp, &wfp ) == (pid_t)-1 ) {
  51                 send_ldap_error( op, rs, LDAP_OTHER,
  52                     "could not fork/exec" );
  53                 return( -1 );
  54         }
  55
  56         /*
  57          * FIX ME:  This should use LDIF routines so that binary
  58          *      values are properly dealt with
  59          */
  60
  61         /* write out the request to the compare process */
  62         fprintf( wfp, "COMPARE\n" );
  63         fprintf( wfp, "msgid: %ld\n", (long) op->o_msgid );
  64         print_suffixes( wfp, op->o_bd );
  65         fprintf( wfp, "dn: %s\n", op->o_req_dn.bv_val );
  66         fprintf( wfp, "%s: %s\n",
  67                 op->oq_compare.rs_ava->aa_desc->ad_cname.bv_val,
  68                 op->oq_compare.rs_ava->aa_value.bv_val /* could be binary! */ );
  69         fclose( wfp );
  70
  71         /* read in the result and send it along */
  72         read_and_send_results( op, rs, rfp );
  73
  74         fclose( rfp );
  75         return( 0 );
  76 }