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320 lines
6.4 KiB
C
320 lines
6.4 KiB
C
/* rwmdn.c - massages dns */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1999-2006 The OpenLDAP Foundation.
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* Portions Copyright 1999-2003 Howard Chu.
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* Portions Copyright 2000-2003 Pierangelo Masarati.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/* ACKNOWLEDGEMENTS:
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* This work was initially developed by Howard Chu for inclusion
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* in OpenLDAP Software and subsequently enhanced by Pierangelo
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* Masarati.
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*/
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#include "portable.h"
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#ifdef SLAPD_OVER_RWM
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#include <stdio.h>
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#include <ac/string.h>
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#include <ac/socket.h>
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#include "slap.h"
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#include "rwm.h"
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/* FIXME: after rewriting, we should also remap attributes ... */
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/*
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* massages "in" and normalizes it into "ndn"
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*
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* "ndn" may be untouched if no massaging occurred and its value was not null
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*/
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int
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rwm_dn_massage_normalize(
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dncookie *dc,
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struct berval *in,
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struct berval *ndn )
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{
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int rc;
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struct berval mdn = BER_BVNULL;
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/* massage and normalize a DN */
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rc = rwm_dn_massage( dc, in, &mdn );
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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if ( mdn.bv_val == in->bv_val && !BER_BVISNULL( ndn ) ) {
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return rc;
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}
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rc = dnNormalize( 0, NULL, NULL, &mdn, ndn, NULL );
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if ( mdn.bv_val != in->bv_val ) {
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ch_free( mdn.bv_val );
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}
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return rc;
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}
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/*
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* massages "in" and prettifies it into "pdn"
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*
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* "pdn" may be untouched if no massaging occurred and its value was not null
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*/
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int
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rwm_dn_massage_pretty(
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dncookie *dc,
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struct berval *in,
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struct berval *pdn )
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{
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int rc;
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struct berval mdn = BER_BVNULL;
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/* massage and pretty a DN */
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rc = rwm_dn_massage( dc, in, &mdn );
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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if ( mdn.bv_val == in->bv_val && !BER_BVISNULL( pdn ) ) {
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return rc;
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}
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rc = dnPretty( NULL, &mdn, pdn, NULL );
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if ( mdn.bv_val != in->bv_val ) {
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ch_free( mdn.bv_val );
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}
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return rc;
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}
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/*
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* massages "in" and prettifies and normalizes it into "pdn" and "ndn"
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*
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* "pdn" may be untouched if no massaging occurred and its value was not null;
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* "ndn" may be untouched if no massaging occurred and its value was not null;
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* if no massage occurred and "ndn" value was not null, it is filled
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* with the normaized value of "pdn", much like ndn = dnNormalize( pdn )
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*/
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int
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rwm_dn_massage_pretty_normalize(
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dncookie *dc,
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struct berval *in,
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struct berval *pdn,
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struct berval *ndn )
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{
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int rc;
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struct berval mdn = BER_BVNULL;
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/* massage, pretty and normalize a DN */
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rc = rwm_dn_massage( dc, in, &mdn );
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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if ( mdn.bv_val == in->bv_val && !BER_BVISNULL( pdn ) ) {
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if ( BER_BVISNULL( ndn ) ) {
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rc = dnNormalize( 0, NULL, NULL, &mdn, ndn, NULL );
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}
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return rc;
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}
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rc = dnPrettyNormal( NULL, &mdn, pdn, ndn, NULL );
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if ( mdn.bv_val != in->bv_val ) {
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ch_free( mdn.bv_val );
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}
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return rc;
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}
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#ifdef ENABLE_REWRITE
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/*
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* massages "in" into "dn"
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*
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* "dn" may contain the value of "in" if no massage occurred
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*/
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int
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rwm_dn_massage(
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dncookie *dc,
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struct berval *in,
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struct berval *dn
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)
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{
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int rc = 0;
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struct berval mdn;
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static char *dmy = "";
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assert( dc != NULL );
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assert( in != NULL );
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assert( dn != NULL );
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rc = rewrite_session( dc->rwmap->rwm_rw, dc->ctx,
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( in->bv_val ? in->bv_val : dmy ),
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dc->conn, &mdn.bv_val );
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switch ( rc ) {
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case REWRITE_REGEXEC_OK:
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if ( !BER_BVISNULL( &mdn ) && mdn.bv_val != in->bv_val ) {
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mdn.bv_len = strlen( mdn.bv_val );
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*dn = mdn;
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} else {
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*dn = *in;
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}
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rc = LDAP_SUCCESS;
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Debug( LDAP_DEBUG_ARGS,
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"[rw] %s: \"%s\" -> \"%s\"\n",
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dc->ctx, in->bv_val, dn->bv_val );
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break;
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case REWRITE_REGEXEC_UNWILLING:
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if ( dc->rs ) {
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dc->rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
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dc->rs->sr_text = "Operation not allowed";
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}
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rc = LDAP_UNWILLING_TO_PERFORM;
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break;
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case REWRITE_REGEXEC_ERR:
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if ( dc->rs ) {
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dc->rs->sr_err = LDAP_OTHER;
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dc->rs->sr_text = "Rewrite error";
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}
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rc = LDAP_OTHER;
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break;
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}
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if ( mdn.bv_val == dmy ) {
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BER_BVZERO( &mdn );
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}
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if ( dn->bv_val == dmy ) {
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BER_BVZERO( dn );
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}
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return rc;
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}
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#else /* ! ENABLE_REWRITE */
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/*
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* rwm_dn_massage
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*
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* Aliases the suffix; based on suffix_alias (servers/slapd/suffixalias.c).
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*/
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int
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rwm_dn_massage(
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dncookie *dc,
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struct berval *in,
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struct berval *dn
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)
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{
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int i, src, dst;
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struct berval tmpin;
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assert( dc != NULL );
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assert( in != NULL );
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assert( dn != NULL );
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BER_BVZERO( dn );
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if ( BER_BVISNULL( in ) ) {
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return LDAP_SUCCESS;
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}
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if ( dc->rwmap == NULL || dc->rwmap->rwm_suffix_massage == NULL ) {
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*dn = *in;
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return LDAP_SUCCESS;
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}
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if ( dc->tofrom ) {
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src = 0 + dc->normalized;
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dst = 2 + dc->normalized;
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tmpin = *in;
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} else {
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int rc;
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src = 2 + dc->normalized;
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dst = 0 + dc->normalized;
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/* DN from remote server may be in arbitrary form.
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* Pretty it so we can parse reliably.
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*/
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if ( dc->normalized ) {
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rc = dnNormalize( 0, NULL, NULL, in, &tmpin, NULL );
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} else {
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rc = dnPretty( NULL, in, &tmpin, NULL );
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}
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if ( rc != LDAP_SUCCESS ) {
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return rc;
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}
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}
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for ( i = 0;
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!BER_BVISNULL( &dc->rwmap->rwm_suffix_massage[i] );
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i += 4 )
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{
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int aliasLength = dc->rwmap->rwm_suffix_massage[i+src].bv_len;
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int diff = tmpin.bv_len - aliasLength;
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if ( diff < 0 ) {
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/* alias is longer than dn */
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continue;
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} else if ( diff > 0 && ( !DN_SEPARATOR(tmpin.bv_val[diff-1])))
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{
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/* FIXME: DN_SEPARATOR() is intended to work
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* on a normalized/pretty DN, so that ';'
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* is never used as a DN separator */
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continue;
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/* At a DN Separator */
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}
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if ( !strcmp( dc->rwmap->rwm_suffix_massage[i+src].bv_val,
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&tmpin.bv_val[diff] ) )
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{
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dn->bv_len = diff + dc->rwmap->rwm_suffix_massage[i+dst].bv_len;
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dn->bv_val = ch_malloc( dn->bv_len + 1 );
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strncpy( dn->bv_val, tmpin.bv_val, diff );
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strcpy( &dn->bv_val[diff], dc->rwmap->rwm_suffix_massage[i+dst].bv_val );
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Debug( LDAP_DEBUG_ARGS,
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"rwm_dn_massage:"
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" converted \"%s\" to \"%s\"\n",
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in->bv_val, dn->bv_val, 0 );
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break;
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}
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}
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if ( tmpin.bv_val != in->bv_val ) {
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ch_free( tmpin.bv_val );
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}
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/* Nothing matched, just return the original DN */
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if ( BER_BVISNULL( dn ) ) {
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*dn = *in;
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}
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return LDAP_SUCCESS;
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}
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#endif /* ! ENABLE_REWRITE */
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#endif /* SLAPD_OVER_RWM */
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