/* bind.c - ldbm backend bind and unbind routines */
/* $OpenLDAP: pkg/ldap/servers/slapd/back-ldbm/bind.c,v 1.75.2.3 2007/01/02 21:44:02 kurt Exp $ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2007 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>.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/krb.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/unistd.h>
#include "slap.h"
#include "back-ldbm.h"
#include "proto-back-ldbm.h"
int
ldbm_back_bind(
Operation *op,
SlapReply *rs )
{
struct ldbminfo *li = (struct ldbminfo *) op->o_bd->be_private;
Entry *e;
Attribute *a;
int rc;
Entry *matched;
#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
char krbname[MAX_K_NAME_SZ + 1];
AttributeDescription *krbattr = slap_schema.si_ad_krbName;
AUTH_DAT ad;
#endif
AttributeDescription *password = slap_schema.si_ad_userPassword;
Debug(LDAP_DEBUG_ARGS,
"==> ldbm_back_bind: dn: %s\n", op->o_req_dn.bv_val, 0, 0);
if ( op->oq_bind.rb_method == LDAP_AUTH_SIMPLE && be_isroot_pw( op ) ) {
ber_dupbv( &op->oq_bind.rb_edn, be_root_dn( op->o_bd ) );
/* front end will send result */
return LDAP_SUCCESS;
}
/* grab giant lock for reading */
ldap_pvt_thread_rdwr_rlock(&li->li_giant_rwlock);
/* get entry with reader lock */
if ( (e = dn2entry_r( op->o_bd, &op->o_req_ndn, &matched )) == NULL ) {
if( matched != NULL ) {
cache_return_entry_r( &li->li_cache, matched );
}
ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
/* allow noauth binds */
rc = 1;
rs->sr_err = LDAP_INVALID_CREDENTIALS;
send_ldap_result( op, rs );
return rs->sr_err;
}
/* check for deleted */
#ifdef LDBM_SUBENTRIES
if ( is_entry_subentry( e ) ) {
/* entry is an subentry, don't allow bind */
Debug( LDAP_DEBUG_TRACE,
"entry is subentry\n", 0, 0, 0 );
rc = LDAP_INVALID_CREDENTIALS;
goto return_results;
}
#endif
if ( is_entry_alias( e ) ) {
/* entry is an alias, don't allow bind */
Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0, 0, 0 );
#if 1
rc = LDAP_INVALID_CREDENTIALS;
#else
rs->sr_text = "entry is alias";
rc = LDAP_ALIAS_PROBLEM;
#endif
goto return_results;
}
if ( is_entry_referral( e ) ) {
/* entry is a referral, don't allow bind */
Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0, 0, 0 );
rc = LDAP_INVALID_CREDENTIALS;
goto return_results;
}
switch ( op->oq_bind.rb_method ) {
case LDAP_AUTH_SIMPLE:
if ( (a = attr_find( e->e_attrs, password )) == NULL ) {
/* stop front end from sending result */
rc = LDAP_INVALID_CREDENTIALS;
goto return_results;
}
if ( slap_passwd_check( op, e, a, &op->oq_bind.rb_cred,
&rs->sr_text ) != 0 )
{
/* failure; stop front end from sending result */
rc = LDAP_INVALID_CREDENTIALS;
goto return_results;
}
rc = 0;
break;
#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
case LDAP_AUTH_KRBV41:
if ( krbv4_ldap_auth( op->o_bd, &op->oq_bind.rb_cred, &ad )
!= LDAP_SUCCESS )
{
rc = LDAP_INVALID_CREDENTIALS;
goto return_results;
}
if ( ! access_allowed( op, e,
krbattr, NULL, ACL_AUTH, NULL ) )
{
rc = LDAP_INSUFFICIENT_ACCESS;
goto return_results;
}
sprintf( krbname, "%s%s%s@%s", ad.pname, *ad.pinst ? "."
: "", ad.pinst, ad.prealm );
if ( (a = attr_find( e->e_attrs, krbattr )) == NULL ) {
/*
* no krbname values present: check against DN
*/
if ( strcasecmp( op->o_req_dn.bv_val, krbname ) == 0 ) {
rc = 0;
break;
}
rc = LDAP_INAPPROPRIATE_AUTH;
goto return_results;
} else { /* look for krbname match */
struct berval krbval;
krbval.bv_val = krbname;
krbval.bv_len = strlen( krbname );
if ( value_find( a->a_desc, a->a_vals, &krbval ) != 0 ) {
rc = LDAP_INVALID_CREDENTIALS;
goto return_results;
}
}
rc = 0;
break;
#endif
default:
assert( 0 ); /* should not be reachable */
rs->sr_text = "authentication method not supported";
rc = LDAP_STRONG_AUTH_NOT_SUPPORTED;
goto return_results;
}
ber_dupbv( &op->oq_bind.rb_edn, &e->e_name );
return_results:;
/* free entry and reader lock */
cache_return_entry_r( &li->li_cache, e );
ldap_pvt_thread_rdwr_runlock(&li->li_giant_rwlock);
if ( rc ) {
rs->sr_err = rc;
send_ldap_result( op, rs );
if ( rs->sr_ref ) {
ber_bvarray_free( rs->sr_ref );
rs->sr_ref = NULL;
}
}
/* front end will send result on success (rc==0) */
return( rc );
}
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