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/* suffixmassage.c - massages ldap backend dns */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2003-2021 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>.
*/
/* ACKNOWLEDGEMENTS:
* This work was initially developed by the Howard Chu for inclusion
* in OpenLDAP Software and subsequently enhanced by Pierangelo
* Masarati.
*/
/* This is an altered version */
/*
* Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
* Copyright 2000, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
*
* Module back-ldap, originally developed by Howard Chu
*
* has been modified by Pierangelo Masarati. The original copyright
* notice has been maintained.
*
* Permission is granted to anyone to use this software for any purpose
* on any computer system, and to alter it and redistribute it, subject
* to the following restrictions:
*
* 1. The author is not responsible for the consequences of use of this
* software, no matter how awful, even if they arise from flaws in it.
*
* 2. The origin of this software must not be misrepresented, either by
* explicit claim or by omission. Since few users ever read sources,
* credits should appear in the documentation.
*
* 3. Altered versions must be plainly marked as such, and must not be
* misrepresented as being the original software. Since few users
* ever read sources, credits should appear in the documentation.
*
* 4. This notice may not be removed or altered.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "slap.h"
#include "../back-ldap/back-ldap.h"
#include "back-meta.h"
#ifdef ENABLE_REWRITE
int
ldap_back_dn_massage(
dncookie *dc,
struct berval *dn,
struct berval *res )
{
int rc = 0;
static char *dmy = "";
switch ( rewrite_session( dc->target->mt_rwmap.rwm_rw, dc->ctx,
( dn->bv_val ? dn->bv_val : dmy ),
dc->conn, &res->bv_val ) )
{
case REWRITE_REGEXEC_OK:
if ( res->bv_val != NULL ) {
res->bv_len = strlen( res->bv_val );
} else {
*res = *dn;
}
Debug( LDAP_DEBUG_ARGS,
"[rw] %s: \"%s\" -> \"%s\"\n",
dc->ctx,
BER_BVISNULL( dn ) ? "" : dn->bv_val,
BER_BVISNULL( res ) ? "" : res->bv_val );
rc = LDAP_SUCCESS;
break;
case REWRITE_REGEXEC_UNWILLING:
if ( dc->rs ) {
dc->rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
dc->rs->sr_text = "Operation not allowed";
}
rc = LDAP_UNWILLING_TO_PERFORM;
break;
case REWRITE_REGEXEC_ERR:
if ( dc->rs ) {
dc->rs->sr_err = LDAP_OTHER;
dc->rs->sr_text = "Rewrite error";
}
rc = LDAP_OTHER;
break;
}
if ( res->bv_val == dmy ) {
BER_BVZERO( res );
}
return rc;
}
#else
/*
* ldap_back_dn_massage
*
* Aliases the suffix; based on suffix_alias (servers/slapd/suffixalias.c).
*/
int
ldap_back_dn_massage(
dncookie *dc,
struct berval *odn,
struct berval *res
)
{
int i, src, dst;
struct berval pretty = {0,NULL}, *dn = odn;
assert( res != NULL );
if ( dn == NULL ) {
res->bv_val = NULL;
res->bv_len = 0;
return 0;
}
if ( dc->target->mt_rwmap.rwm_suffix_massage == NULL ) {
*res = *dn;
return 0;
}
if ( dc->tofrom ) {
src = 0 + dc->normalized;
dst = 2 + dc->normalized;
} else {
src = 2 + dc->normalized;
dst = 0 + dc->normalized;
/* DN from remote server may be in arbitrary form.
* Pretty it so we can parse reliably.
*/
dnPretty( NULL, dn, &pretty, NULL );
if (pretty.bv_val) dn = &pretty;
}
for ( i = 0;
dc->target->mt_rwmap.rwm_suffix_massage[i].bv_val != NULL;
i += 4 ) {
int aliasLength = dc->target->mt_rwmap.rwm_suffix_massage[i+src].bv_len;
int diff = dn->bv_len - aliasLength;
if ( diff < 0 ) {
/* alias is longer than dn */
continue;
} else if ( diff > 0 && ( !DN_SEPARATOR(dn->bv_val[diff-1]))) {
/* boundary is not at a DN separator */
continue;
/* At a DN Separator */
}
if ( !strcmp( dc->target->mt_rwmap.rwm_suffix_massage[i+src].bv_val, &dn->bv_val[diff] ) ) {
res->bv_len = diff + dc->target->mt_rwmap.rwm_suffix_massage[i+dst].bv_len;
res->bv_val = ch_malloc( res->bv_len + 1 );
strncpy( res->bv_val, dn->bv_val, diff );
strcpy( &res->bv_val[diff], dc->target->mt_rwmap.rwm_suffix_massage[i+dst].bv_val );
Debug( LDAP_DEBUG_ARGS,
"ldap_back_dn_massage:"
" converted \"%s\" to \"%s\"\n",
BER_BVISNULL( dn ) ? "" : dn->bv_val,
BER_BVISNULL( res ) ? "" : res->bv_val, 0 );
break;
}
}
if (pretty.bv_val) {
ch_free(pretty.bv_val);
dn = odn;
}
/* Nothing matched, just return the original DN */
if (res->bv_val == NULL) {
*res = *dn;
}
return 0;
}
#endif /* !ENABLE_REWRITE */
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