openldap/servers/slapd/overlays/rwmdn.c
2004-05-07 02:18:08 +00:00

182 lines
4.1 KiB
C

/* rwmdn.c - massages dns */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1999-2004 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 the 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 ... */
#ifdef ENABLE_REWRITE
int
rwm_dn_massage(
dncookie *dc,
struct berval *dn,
struct berval *res
)
{
int rc = 0;
rc = rewrite_session( dc->rwmap->rwm_rw, dc->ctx,
( dn->bv_len ? dn->bv_val : "" ),
dc->conn, &res->bv_val );
switch ( rc ) {
case REWRITE_REGEXEC_OK:
if ( res->bv_val != NULL ) {
res->bv_len = strlen( res->bv_val );
} else {
*res = *dn;
}
#ifdef NEW_LOGGING
LDAP_LOG( BACK_LDAP, DETAIL1,
"[rw] %s: \"%s\" -> \"%s\"\n",
dc->ctx, dn->bv_val, res->bv_val );
#else /* !NEW_LOGGING */
Debug( LDAP_DEBUG_ARGS,
"[rw] %s: \"%s\" -> \"%s\"\n",
dc->ctx, dn->bv_val, res->bv_val );
#endif /* !NEW_LOGGING */
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;
}
return rc;
}
#else
/*
* rwm_dn_massage
*
* Aliases the suffix; based on suffix_alias (servers/slapd/suffixalias.c).
*/
int
rwm_dn_massage(
dncookie *dc,
struct berval *odn,
struct berval *res
)
{
int i, src, dst;
struct berval pretty = {0,NULL}, *dn = odn;
assert( res );
if ( dn == NULL ) {
res->bv_val = NULL;
res->bv_len = 0;
return 0;
}
if ( dc->rwmap == NULL || dc->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->rwmap->rwm_suffix_massage[i].bv_val != NULL;
i += 4 ) {
int aliasLength = dc->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 && ( !NDN_SEPARATOR(dn->bv_val[diff-1]))) {
/* FIXME: should use DN_SEPARATOR() instead of
* NDN_SEPARATOR(), but the latter may fail if
* an escaped ';' is present */
/* boundary is not at a DN separator */
continue;
/* At a DN Separator */
}
if ( !strcmp( dc->rwmap->rwm_suffix_massage[i+src].bv_val, &dn->bv_val[diff] ) ) {
res->bv_len = diff + dc->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->rwmap->rwm_suffix_massage[i+dst].bv_val );
#ifdef NEW_LOGGING
LDAP_LOG ( BACK_LDAP, ARGS,
"rwm_dn_massage: converted \"%s\" to \"%s\"\n",
dn->bv_val, res->bv_val, 0 );
#else
Debug( LDAP_DEBUG_ARGS,
"rwm_dn_massage:"
" converted \"%s\" to \"%s\"\n",
dn->bv_val, res->bv_val, 0 );
#endif
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 */
#endif /* SLAPD_OVER_RWM */