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/* rwmdn.c - massages dns */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1999-2022 The OpenLDAP Foundation.
* Portions Copyright 1999-2003 Howard Chu.
* Portions Copyright 2000-2003 Pierangelo Masarati.
* 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 Howard Chu for inclusion
* in OpenLDAP Software and subsequently enhanced by Pierangelo
* Masarati.
*/
#include "portable.h"
#ifdef SLAPD_OVER_RWM
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "slap.h"
#include "rwm.h"
/* FIXME: after rewriting, we should also remap attributes ... */
/*
* massages "in" and normalizes it into "ndn"
*
* "ndn" may be untouched if no massaging occurred and its value was not null
*/
int
rwm_dn_massage_normalize(
dncookie *dc,
struct berval *in,
struct berval *ndn )
{
int rc;
struct berval mdn = BER_BVNULL;
/* massage and normalize a DN */
rc = rwm_dn_massage( dc, in, &mdn );
if ( rc != LDAP_SUCCESS ) {
return rc;
}
if ( mdn.bv_val == in->bv_val && !BER_BVISNULL( ndn ) ) {
return rc;
}
rc = dnNormalize( 0, NULL, NULL, &mdn, ndn, NULL );
if ( mdn.bv_val != in->bv_val ) {
ch_free( mdn.bv_val );
}
return rc;
}
/*
* massages "in" and prettifies it into "pdn"
*
* "pdn" may be untouched if no massaging occurred and its value was not null
*/
int
rwm_dn_massage_pretty(
dncookie *dc,
struct berval *in,
struct berval *pdn )
{
int rc;
struct berval mdn = BER_BVNULL;
/* massage and pretty a DN */
rc = rwm_dn_massage( dc, in, &mdn );
if ( rc != LDAP_SUCCESS ) {
return rc;
}
if ( mdn.bv_val == in->bv_val && !BER_BVISNULL( pdn ) ) {
return rc;
}
rc = dnPretty( NULL, &mdn, pdn, NULL );
if ( mdn.bv_val != in->bv_val ) {
ch_free( mdn.bv_val );
}
return rc;
}
/*
* massages "in" and prettifies and normalizes it into "pdn" and "ndn"
*
* "pdn" may be untouched if no massaging occurred and its value was not null;
* "ndn" may be untouched if no massaging occurred and its value was not null;
* if no massage occurred and "ndn" value was not null, it is filled
* with the normalized value of "pdn", much like ndn = dnNormalize( pdn )
*/
int
rwm_dn_massage_pretty_normalize(
dncookie *dc,
struct berval *in,
struct berval *pdn,
struct berval *ndn )
{
int rc;
struct berval mdn = BER_BVNULL;
/* massage, pretty and normalize a DN */
rc = rwm_dn_massage( dc, in, &mdn );
if ( rc != LDAP_SUCCESS ) {
return rc;
}
if ( mdn.bv_val == in->bv_val && !BER_BVISNULL( pdn ) ) {
if ( BER_BVISNULL( ndn ) ) {
rc = dnNormalize( 0, NULL, NULL, &mdn, ndn, NULL );
}
return rc;
}
rc = dnPrettyNormal( NULL, &mdn, pdn, ndn, NULL );
if ( mdn.bv_val != in->bv_val ) {
ch_free( mdn.bv_val );
}
return rc;
}
/*
* massages "in" into "dn"
*
* "dn" may contain the value of "in" if no massage occurred
*/
int
rwm_dn_massage(
dncookie *dc,
struct berval *in,
struct berval *dn
)
{
int rc = 0;
struct berval mdn;
static char *dmy = "";
char *in_val;
assert( dc != NULL );
assert( in != NULL );
assert( dn != NULL );
/* protect from NULL berval */
in_val = in->bv_val ? in->bv_val : dmy;
rc = rewrite_session( dc->rwmap->rwm_rw, dc->ctx,
in_val, dc->conn, &mdn.bv_val );
switch ( rc ) {
case REWRITE_REGEXEC_OK:
if ( !BER_BVISNULL( &mdn ) && mdn.bv_val != in_val ) {
mdn.bv_len = strlen( mdn.bv_val );
*dn = mdn;
} else {
dn->bv_len = in->bv_len;
dn->bv_val = in_val;
}
rc = LDAP_SUCCESS;
Debug( LDAP_DEBUG_ARGS,
"[rw] %s: \"%s\" -> \"%s\"\n",
dc->ctx, in_val, dn->bv_val );
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 ( mdn.bv_val == dmy ) {
BER_BVZERO( &mdn );
}
if ( dn->bv_val == dmy ) {
BER_BVZERO( dn );
}
return rc;
}
#endif /* SLAPD_OVER_RWM */
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