/* bind.c - bdb backend bind routine */
/* $OpenLDAP$ */
-/*
- * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2000-2008 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/string.h>
#include <ac/unistd.h>
#include "back-bdb.h"
-#include "external.h"
int
-bdb_bind(
- Backend *be,
- Connection *conn,
- Operation *op,
- struct berval *dn,
- struct berval *ndn,
- int method,
- struct berval *cred,
- struct berval *edn
-)
+bdb_bind( Operation *op, SlapReply *rs )
{
- struct bdb_info *bdb = (struct bdb_info *) be->be_private;
+ struct bdb_info *bdb = (struct bdb_info *) 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
+ EntryInfo *ei;
AttributeDescription *password = slap_schema.si_ad_userPassword;
- Debug( LDAP_DEBUG_ARGS, "==> bdb_bind: dn: %s\n", dn->bv_val, 0, 0);
+ DB_TXN *rtxn;
+ DB_LOCK lock;
- /* get entry */
- rc = bdb_dn2entry_r( be, NULL, ndn, &e, &matched, 0 );
+ Debug( LDAP_DEBUG_ARGS,
+ "==> " LDAP_XSTRING(bdb_bind) ": dn: %s\n",
+ op->o_req_dn.bv_val, 0, 0);
- switch(rc) {
- case DB_NOTFOUND:
+ /* allow noauth binds */
+ switch ( be_rootdn_bind( op, NULL ) ) {
+ case LDAP_SUCCESS:
+ /* frontend will send result */
+ return rs->sr_err;
+
+ default:
+ /* give the database a chanche */
+ /* NOTE: this behavior departs from that of other backends,
+ * since the others, in case of password checking failure
+ * do not give the database a chance. If an entry with
+ * rootdn's name does not exist in the database the result
+ * will be the same. See ITS#4962 for discussion. */
+ break;
+ }
+
+ rs->sr_err = bdb_reader_get(op, bdb->bi_dbenv, &rtxn);
+ switch(rs->sr_err) {
case 0:
break;
default:
- send_ldap_result( conn, op, rc=LDAP_OTHER,
- NULL, "internal error", NULL, NULL );
- return rc;
+ rs->sr_text = "internal error";
+ send_ldap_result( op, rs );
+ return rs->sr_err;
}
+dn2entry_retry:
/* get entry with reader lock */
- if ( e == NULL ) {
- char *matched_dn = NULL;
- BerVarray refs;
-
- if( matched != NULL ) {
- matched_dn = ch_strdup( matched->e_dn );
+ rs->sr_err = bdb_dn2entry( op, rtxn, &op->o_req_ndn, &ei, 1,
+ &lock );
- refs = is_entry_referral( matched )
- ? get_entry_referrals( be, conn, op, matched )
- : NULL;
-
- bdb_cache_return_entry_r( &bdb->bi_cache, matched );
- matched = NULL;
-
- } else {
- refs = referral_rewrite( default_referral,
- NULL, dn, LDAP_SCOPE_DEFAULT );
- }
+ switch(rs->sr_err) {
+ case DB_NOTFOUND:
+ case 0:
+ break;
+ case LDAP_BUSY:
+ send_ldap_error( op, rs, LDAP_BUSY, "ldap_server_busy" );
+ return LDAP_BUSY;
+ case DB_LOCK_DEADLOCK:
+ case DB_LOCK_NOTGRANTED:
+ goto dn2entry_retry;
+ default:
+ send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
+ return rs->sr_err;
+ }
- /* allow noauth binds */
- rc = 1;
- if ( method == LDAP_AUTH_SIMPLE ) {
- if ( be_isroot_pw( be, conn, ndn, cred ) ) {
- ber_dupbv( edn, be_root_dn( be ) );
- rc = LDAP_SUCCESS; /* front end will send result */
-
- } else if ( refs != NULL ) {
- send_ldap_result( conn, op, rc = LDAP_REFERRAL,
- matched_dn, NULL, refs, NULL );
-
- } else {
- send_ldap_result( conn, op, rc = LDAP_INVALID_CREDENTIALS,
- NULL, NULL, NULL, NULL );
- }
-
- } else if ( refs != NULL ) {
- send_ldap_result( conn, op, rc = LDAP_REFERRAL,
- matched_dn, NULL, refs, NULL );
-
- } else {
- send_ldap_result( conn, op, rc = LDAP_INVALID_CREDENTIALS,
- NULL, NULL, NULL, NULL );
+ e = ei->bei_e;
+ if ( rs->sr_err == DB_NOTFOUND ) {
+ if( e != NULL ) {
+ bdb_cache_return_entry_r( bdb, e, &lock );
+ e = NULL;
}
- ber_bvarray_free( refs );
- free( matched_dn );
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ send_ldap_result( op, rs );
- return rc;
+ return rs->sr_err;
}
- ber_dupbv( edn, &e->e_name );
+ ber_dupbv( &op->oq_bind.rb_edn, &e->e_name );
/* check for deleted */
+ if ( is_entry_subentry( e ) ) {
+ /* entry is an subentry, don't allow bind */
+ Debug( LDAP_DEBUG_TRACE, "entry is subentry\n", 0,
+ 0, 0 );
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
+ goto done;
+ }
if ( is_entry_alias( e ) ) {
/* entry is an alias, don't allow bind */
- Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0,
- 0, 0 );
-
- send_ldap_result( conn, op, rc = LDAP_ALIAS_PROBLEM,
- NULL, "entry is alias", NULL, NULL );
-
+ Debug( LDAP_DEBUG_TRACE, "entry is alias\n", 0, 0, 0 );
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
goto done;
}
if ( is_entry_referral( e ) ) {
- /* entry is a referral, don't allow bind */
- BerVarray refs = get_entry_referrals( be,
- conn, op, e );
-
Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
0, 0 );
-
- if( refs != NULL ) {
- send_ldap_result( conn, op, rc = LDAP_REFERRAL,
- e->e_dn, NULL, refs, NULL );
-
- } else {
- send_ldap_result( conn, op, rc = LDAP_INVALID_CREDENTIALS,
- NULL, NULL, NULL, NULL );
- }
-
- ber_bvarray_free( refs );
-
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
goto done;
}
- switch ( method ) {
+ switch ( op->oq_bind.rb_method ) {
case LDAP_AUTH_SIMPLE:
- /* check for root dn/passwd */
- if ( be_isroot_pw( be, conn, ndn, cred ) ) {
- /* front end will send result */
- if(edn->bv_val != NULL) free( edn->bv_val );
- ber_dupbv( edn, be_root_dn( be ) );
- rc = LDAP_SUCCESS;
+ a = attr_find( e->e_attrs, password );
+ if ( a == NULL ) {
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
goto done;
}
- if ( ! access_allowed( be, conn, op, e,
- password, NULL, ACL_AUTH ) )
+ if ( slap_passwd_check( op, e, a, &op->oq_bind.rb_cred,
+ &rs->sr_text ) != 0 )
{
- send_ldap_result( conn, op, rc = LDAP_INSUFFICIENT_ACCESS,
- NULL, NULL, NULL, NULL );
+ /* failure; stop front end from sending result */
+ rs->sr_err = LDAP_INVALID_CREDENTIALS;
goto done;
}
-
- if ( (a = attr_find( e->e_attrs, password )) == NULL ) {
- send_ldap_result( conn, op, rc = LDAP_INAPPROPRIATE_AUTH,
- NULL, NULL, NULL, NULL );
- goto done;
- }
-
- if ( slap_passwd_check( conn, a, cred ) != 0 ) {
- send_ldap_result( conn, op, rc = LDAP_INVALID_CREDENTIALS,
- NULL, NULL, NULL, NULL );
- goto done;
- }
-
- rc = 0;
- break;
-
-#ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
- case LDAP_AUTH_KRBV41:
- if ( krbv4_ldap_auth( be, cred, &ad ) != LDAP_SUCCESS ) {
- send_ldap_result( conn, op, rc = LDAP_INVALID_CREDENTIALS,
- NULL, NULL, NULL, NULL );
- goto done;
- }
-
- if ( ! access_allowed( be, conn, op, e,
- krbattr, NULL, ACL_AUTH ) )
- {
- send_ldap_result( conn, op, rc = LDAP_INSUFFICIENT_ACCESS,
- NULL, NULL, NULL, NULL );
- goto done;
- }
-
- 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( dn, krbname ) == 0 ) {
- rc = 0;
- break;
- }
- send_ldap_result( conn, op, rc = LDAP_INAPPROPRIATE_AUTH,
- NULL, NULL, NULL, NULL );
- goto done;
-
- } 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 ) {
- send_ldap_result( conn, op,
- rc = LDAP_INVALID_CREDENTIALS,
- NULL, NULL, NULL, NULL );
- goto done;
- }
- }
- rc = 0;
+
+ rs->sr_err = 0;
break;
- case LDAP_AUTH_KRBV42:
- send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
- NULL, "Kerberos bind step 2 not supported",
- NULL, NULL );
- goto done;
-#endif
-
default:
- send_ldap_result( conn, op, rc = LDAP_STRONG_AUTH_NOT_SUPPORTED,
- NULL, "authentication method not supported", NULL, NULL );
- goto done;
+ assert( 0 ); /* should not be reachable */
+ rs->sr_err = LDAP_STRONG_AUTH_NOT_SUPPORTED;
+ rs->sr_text = "authentication method not supported";
}
done:
/* free entry and reader lock */
if( e != NULL ) {
- bdb_cache_return_entry_r( &bdb->bi_cache, e );
+ bdb_cache_return_entry_r( bdb, e, &lock );
}
- /* front end with send result on success (rc==0) */
- return rc;
+ if ( rs->sr_err ) {
+ 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 (rs->sr_err==0) */
+ return rs->sr_err;
}
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