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[openldap] / servers / slapd / back-shell / compare.c
1 /* compare.c - shell backend compare function */
2 /* $OpenLDAP$ */
3 /*
4  * Copyright 1998-2002 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     Backend     *be,
21     Connection  *conn,
22     Operation   *op,
23     struct berval *dn,
24     struct berval *ndn,
25     AttributeAssertion *ava
26 )
27 {
28         struct shellinfo        *si = (struct shellinfo *) be->be_private;
29         FILE                    *rfp, *wfp;
30
31         if ( IS_NULLCMD( si->si_compare ) ) {
32                 send_ldap_result( conn, op, LDAP_UNWILLING_TO_PERFORM, NULL,
33                     "compare not implemented", NULL, NULL );
34                 return( -1 );
35         }
36
37         if ( (op->o_private = (void *) forkandexec( si->si_compare, &rfp, &wfp ))
38             == (void *) -1 ) {
39                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
40                     "could not fork/exec", NULL, NULL );
41                 return( -1 );
42         }
43
44         /*
45          * FIX ME:  This should use LDIF routines so that binary
46          *      values are properly dealt with
47          */
48
49         /* write out the request to the compare process */
50         fprintf( wfp, "COMPARE\n" );
51         fprintf( wfp, "opid: %ld/%ld\n", op->o_connid, (long) op->o_msgid );
52         fprintf( wfp, "msgid: %ld\n", (long) op->o_msgid );
53         print_suffixes( wfp, be );
54         fprintf( wfp, "dn: %s\n", dn->bv_val );
55         fprintf( wfp, "%s: %s\n",
56                 ava->aa_desc->ad_cname.bv_val,
57                 ava->aa_value.bv_val /* could be binary! */ );
58         fclose( wfp );
59
60         /* read in the result and send it along */
61         read_and_send_results( be, conn, op, rfp, NULL, 0 );
62
63         fclose( rfp );
64         return( 0 );
65 }