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https://git.openldap.org/openldap/openldap.git
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2136 lines
52 KiB
C
2136 lines
52 KiB
C
/* bind.c - ldap backend bind function */
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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 2000-2003 Pierangelo Masarati.
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* Portions Copyright 1999-2003 Howard Chu.
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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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#include <stdio.h>
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#include <ac/errno.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#define AVL_INTERNAL
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#include "slap.h"
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#include "back-ldap.h"
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#include "lutil_ldap.h"
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#ifndef PRINT_CONNTREE
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#define PRINT_CONNTREE 0
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#endif /* !PRINT_CONNTREE */
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#define LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ "2.16.840.1.113730.3.4.12"
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#if PRINT_CONNTREE > 0
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static void
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ravl_print( Avlnode *root, int depth )
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{
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int i;
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ldapconn_t *lc;
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if ( root == 0 ) {
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return;
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}
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ravl_print( root->avl_right, depth+1 );
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for ( i = 0; i < depth; i++ ) {
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fprintf( stderr, "-" );
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}
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lc = root->avl_data;
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fprintf( stderr, "lc=%p local=\"%s\" conn=%p %s refcnt=%d\n",
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(void *)lc,
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lc->lc_local_ndn.bv_val ? lc->lc_local_ndn.bv_val : "",
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(void *)lc->lc_conn,
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avl_bf2str( root->avl_bf ), lc->lc_refcnt );
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ravl_print( root->avl_left, depth+1 );
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}
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static void
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myprint( Avlnode *root, char *msg )
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{
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fprintf( stderr, "========> %s\n", msg );
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if ( root == 0 ) {
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fprintf( stderr, "\tNULL\n" );
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} else {
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ravl_print( root, 0 );
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}
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fprintf( stderr, "<======== %s\n", msg );
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}
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#endif /* PRINT_CONNTREE */
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static int
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ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
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static int
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ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
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static int
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ldap_back_conndnlc_cmp( const void *c1, const void *c2 );
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int
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ldap_back_bind( Operation *op, SlapReply *rs )
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{
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ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
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ldapconn_t *lc;
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int rc = 0;
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ber_int_t msgid;
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lc = ldap_back_getconn( op, rs, LDAP_BACK_BIND_SERR );
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if ( !lc ) {
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return rs->sr_err;
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}
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if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
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ch_free( lc->lc_bound_ndn.bv_val );
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BER_BVZERO( &lc->lc_bound_ndn );
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}
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LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
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/* method is always LDAP_AUTH_SIMPLE if we got here */
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rs->sr_err = ldap_sasl_bind( lc->lc_ld, op->o_req_dn.bv_val,
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LDAP_SASL_SIMPLE,
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&op->orb_cred, op->o_ctrls, NULL, &msgid );
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rc = ldap_back_op_result( lc, op, rs, msgid,
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li->li_timeout[ SLAP_OP_BIND ],
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LDAP_BACK_BIND_SERR );
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if ( rc == LDAP_SUCCESS ) {
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/* If defined, proxyAuthz will be used also when
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* back-ldap is the authorizing backend; for this
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* purpose, a successful bind is followed by a
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* bind with the configured identity assertion */
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/* NOTE: use with care */
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if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
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ldap_back_proxy_authz_bind( lc, op, rs, LDAP_BACK_SENDERR );
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if ( !LDAP_BACK_CONN_ISBOUND( lc ) ) {
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rc = 1;
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}
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goto done;
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}
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/* rebind is now done inside ldap_back_proxy_authz_bind()
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* in case of success */
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LDAP_BACK_CONN_ISBOUND_SET( lc );
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ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
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if ( LDAP_BACK_SAVECRED( li ) ) {
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if ( !BER_BVISNULL( &lc->lc_cred ) ) {
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memset( lc->lc_cred.bv_val, 0,
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lc->lc_cred.bv_len );
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}
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ber_bvreplace( &lc->lc_cred, &op->orb_cred );
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ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
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}
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}
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done:;
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assert( lc->lc_binding == 1 );
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lc->lc_binding = 0;
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/* must re-insert if local DN changed as result of bind */
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if ( !LDAP_BACK_CONN_ISBOUND( lc )
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|| ( LDAP_BACK_CONN_ISBOUND( lc )
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&& !dn_match( &op->o_req_ndn, &lc->lc_local_ndn ) ) )
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{
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int lerr = -1;
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ldapconn_t *tmplc;
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/* wait for all other ops to release the connection */
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retry_lock:;
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ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
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if ( lc->lc_refcnt > 1 ) {
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ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
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ldap_pvt_thread_yield();
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goto retry_lock;
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}
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assert( lc->lc_refcnt == 1 );
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tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
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ldap_back_conndnlc_cmp );
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assert( tmplc == NULL || lc == tmplc );
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/* delete all cached connections with the current connection */
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if ( LDAP_BACK_SINGLECONN( li ) ) {
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while ( ( tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc, ldap_back_conn_cmp ) ) != NULL )
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{
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Debug( LDAP_DEBUG_TRACE,
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"=>ldap_back_bind: destroying conn %ld (refcnt=%u)\n",
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LDAP_BACK_PCONN_ID( lc->lc_conn ), lc->lc_refcnt, 0 );
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if ( tmplc->lc_refcnt != 0 ) {
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/* taint it */
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LDAP_BACK_CONN_TAINTED_SET( tmplc );
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} else {
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/*
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* Needs a test because the handler may be corrupted,
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* and calling ldap_unbind on a corrupted header results
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* in a segmentation fault
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*/
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ldap_back_conn_free( tmplc );
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}
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}
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}
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if ( LDAP_BACK_CONN_ISBOUND( lc ) ) {
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ber_bvreplace( &lc->lc_local_ndn, &op->o_req_ndn );
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if ( be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
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lc->lc_conn = LDAP_BACK_PCONN_SET( op );
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}
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lerr = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
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ldap_back_conndn_cmp, ldap_back_conndn_dup );
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}
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#if PRINT_CONNTREE > 0
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myprint( li->li_conninfo.lai_tree, "ldap_back_bind" );
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#endif /* PRINT_CONNTREE */
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ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
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switch ( lerr ) {
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case 0:
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break;
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case -1:
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/* duplicate; someone else successfully bound
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* on the same connection with the same identity;
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* we can do this because lc_refcnt == 1 */
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ldap_back_conn_free( lc );
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lc = NULL;
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}
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}
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if ( lc != NULL ) {
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ldap_back_release_conn( op, rs, lc );
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}
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return( rc );
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}
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/*
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* ldap_back_conndn_cmp
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*
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* compares two ldapconn_t based on the value of the conn pointer
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* and of the local DN; used by avl stuff for insert, lookup
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* and direct delete
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*/
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int
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ldap_back_conndn_cmp( const void *c1, const void *c2 )
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{
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const ldapconn_t *lc1 = (const ldapconn_t *)c1;
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const ldapconn_t *lc2 = (const ldapconn_t *)c2;
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int rc;
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/* If local DNs don't match, it is definitely not a match */
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/* For shared sessions, conn is NULL. Only explicitly
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* bound sessions will have non-NULL conn.
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*/
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rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
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if ( rc == 0 ) {
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rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
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}
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return rc;
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}
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/*
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* ldap_back_conndnlc_cmp
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*
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* compares two ldapconn_t based on the value of the conn pointer,
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* the local DN and the lc pointer; used by avl stuff for insert, lookup
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* and direct delete
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*/
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static int
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ldap_back_conndnlc_cmp( const void *c1, const void *c2 )
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{
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const ldapconn_t *lc1 = (const ldapconn_t *)c1;
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const ldapconn_t *lc2 = (const ldapconn_t *)c2;
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int rc;
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/* If local DNs don't match, it is definitely not a match */
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/* For shared sessions, conn is NULL. Only explicitly
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* bound sessions will have non-NULL conn.
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*/
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rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
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if ( rc == 0 ) {
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rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
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if ( rc == 0 ) {
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rc = SLAP_PTRCMP( lc1, lc2 );
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}
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}
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return rc;
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}
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/*
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* ldap_back_conn_cmp
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*
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* compares two ldapconn_t based on the value of the conn pointer;
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* used by avl stuff for delete of all conns with the same connid
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*/
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int
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ldap_back_conn_cmp( const void *c1, const void *c2 )
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{
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const ldapconn_t *lc1 = (const ldapconn_t *)c1;
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const ldapconn_t *lc2 = (const ldapconn_t *)c2;
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/* For shared sessions, conn is NULL. Only explicitly
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* bound sessions will have non-NULL conn.
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*/
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return SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
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}
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/*
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* ldap_back_conndn_dup
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*
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* returns -1 in case a duplicate ldapconn_t has been inserted;
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* used by avl stuff
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*/
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int
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ldap_back_conndn_dup( void *c1, void *c2 )
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{
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ldapconn_t *lc1 = (ldapconn_t *)c1;
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ldapconn_t *lc2 = (ldapconn_t *)c2;
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/* Cannot have more than one shared session with same DN */
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if ( lc1->lc_conn == lc2->lc_conn &&
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dn_match( &lc1->lc_local_ndn, &lc2->lc_local_ndn ) )
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{
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return -1;
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}
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return 0;
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}
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int
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ldap_back_freeconn( Operation *op, ldapconn_t *lc, int dolock )
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{
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ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
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ldapconn_t *tmplc;
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if ( dolock ) {
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ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
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}
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tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
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ldap_back_conndnlc_cmp );
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assert( LDAP_BACK_CONN_TAINTED( lc ) || tmplc == lc );
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if ( lc->lc_refcnt == 0 ) {
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ldap_back_conn_free( (void *)lc );
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}
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if ( dolock ) {
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ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
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}
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return 0;
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}
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#ifdef HAVE_TLS
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static int
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ldap_back_start_tls(
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LDAP *ld,
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int protocol,
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int *is_tls,
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const char *url,
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unsigned flags,
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int retries,
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const char **text )
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{
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int rc = LDAP_SUCCESS;
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ldapinfo_t dummy;
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/* this is ridiculous... */
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dummy.li_flags = flags;
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/* start TLS ("tls-[try-]{start,propagate}" statements) */
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if ( ( LDAP_BACK_USE_TLS( &dummy ) || ( *is_tls && LDAP_BACK_PROPAGATE_TLS( &dummy ) ) )
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&& !ldap_is_ldaps_url( url ) )
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{
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#ifdef SLAP_STARTTLS_ASYNCHRONOUS
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/*
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* use asynchronous StartTLS
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* in case, chase referral (not implemented yet)
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*/
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int msgid;
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if ( protocol == 0 ) {
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ldap_get_option( ld, LDAP_OPT_PROTOCOL_VERSION,
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(void *)&protocol );
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}
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if ( protocol < LDAP_VERSION3 ) {
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/* we should rather bail out... */
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rc = LDAP_UNWILLING_TO_PERFORM;
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*text = "invalid protocol version";
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}
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if ( rc == LDAP_SUCCESS ) {
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rc = ldap_start_tls( ld, NULL, NULL, &msgid );
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}
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if ( rc == LDAP_SUCCESS ) {
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LDAPMessage *res = NULL;
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struct timeval tv;
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LDAP_BACK_TV_SET( &tv );
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retry:;
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rc = ldap_result( ld, msgid, LDAP_MSG_ALL, &tv, &res );
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if ( rc < 0 ) {
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rc = LDAP_UNAVAILABLE;
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} else if ( rc == 0 ) {
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if ( retries != LDAP_BACK_RETRY_NEVER ) {
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ldap_pvt_thread_yield();
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if ( retries > 0 ) {
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retries--;
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}
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LDAP_BACK_TV_SET( &tv );
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goto retry;
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}
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rc = LDAP_UNAVAILABLE;
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|
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} else if ( rc == LDAP_RES_EXTENDED ) {
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struct berval *data = NULL;
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rc = ldap_parse_extended_result( ld, res,
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NULL, &data, 0 );
|
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if ( rc == LDAP_SUCCESS ) {
|
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int err;
|
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rc = ldap_parse_result( ld, res, &err,
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NULL, NULL, NULL, NULL, 1 );
|
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if ( rc == LDAP_SUCCESS ) {
|
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rc = err;
|
|
}
|
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res = NULL;
|
|
|
|
/* FIXME: in case a referral
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* is returned, should we try
|
|
* using it instead of the
|
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* configured URI? */
|
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if ( rc == LDAP_SUCCESS ) {
|
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rc = ldap_install_tls( ld );
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|
|
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} else if ( rc == LDAP_REFERRAL ) {
|
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rc = LDAP_UNWILLING_TO_PERFORM;
|
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*text = "unwilling to chase referral returned by Start TLS exop";
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}
|
|
|
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if ( data ) {
|
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if ( data->bv_val ) {
|
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ber_memfree( data->bv_val );
|
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}
|
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ber_memfree( data );
|
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}
|
|
}
|
|
|
|
} else {
|
|
rc = LDAP_OTHER;
|
|
}
|
|
|
|
if ( res != NULL ) {
|
|
ldap_msgfree( res );
|
|
}
|
|
}
|
|
#else /* ! SLAP_STARTTLS_ASYNCHRONOUS */
|
|
/*
|
|
* use synchronous StartTLS
|
|
*/
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|
rc = ldap_start_tls_s( ld, NULL, NULL );
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|
#endif /* ! SLAP_STARTTLS_ASYNCHRONOUS */
|
|
|
|
/* if StartTLS is requested, only attempt it if the URL
|
|
* is not "ldaps://"; this may occur not only in case
|
|
* of misconfiguration, but also when used in the chain
|
|
* overlay, where the "uri" can be parsed out of a referral */
|
|
switch ( rc ) {
|
|
case LDAP_SUCCESS:
|
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*is_tls = 1;
|
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break;
|
|
|
|
case LDAP_SERVER_DOWN:
|
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break;
|
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|
|
default:
|
|
if ( LDAP_BACK_TLS_CRITICAL( &dummy ) ) {
|
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*text = "could not start TLS";
|
|
break;
|
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}
|
|
|
|
/* in case Start TLS is not critical */
|
|
*is_tls = 0;
|
|
rc = LDAP_SUCCESS;
|
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break;
|
|
}
|
|
|
|
} else {
|
|
*is_tls = 0;
|
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}
|
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|
|
return rc;
|
|
}
|
|
#endif /* HAVE_TLS */
|
|
|
|
static int
|
|
ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
int version;
|
|
LDAP *ld = NULL;
|
|
#ifdef HAVE_TLS
|
|
int is_tls = op->o_conn->c_is_tls;
|
|
#endif /* HAVE_TLS */
|
|
time_t lc_time = (time_t)(-1);
|
|
|
|
assert( lcp != NULL );
|
|
|
|
ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
|
|
rs->sr_err = ldap_initialize( &ld, li->li_uri );
|
|
ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
goto error_return;
|
|
}
|
|
|
|
if ( li->li_urllist_f ) {
|
|
ldap_set_urllist_proc( ld, li->li_urllist_f, li->li_urllist_p );
|
|
}
|
|
|
|
/* Set LDAP version. This will always succeed: If the client
|
|
* bound with a particular version, then so can we.
|
|
*/
|
|
if ( li->li_version != 0 ) {
|
|
version = li->li_version;
|
|
|
|
} else if ( op->o_protocol != 0 ) {
|
|
version = op->o_protocol;
|
|
|
|
} else {
|
|
/* assume it's an internal op; set to LDAPv3 */
|
|
version = LDAP_VERSION3;
|
|
}
|
|
ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&version );
|
|
|
|
/* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
|
|
ldap_set_option( ld, LDAP_OPT_REFERRALS,
|
|
LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
|
|
|
|
if ( li->li_network_timeout > 0 ) {
|
|
struct timeval tv;
|
|
|
|
tv.tv_sec = li->li_network_timeout;
|
|
tv.tv_usec = 0;
|
|
ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
|
|
}
|
|
|
|
#ifdef HAVE_TLS
|
|
ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
|
|
rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
|
|
li->li_uri, li->li_flags, li->li_nretries, &rs->sr_text );
|
|
ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
ldap_unbind_ext( ld, NULL, NULL );
|
|
goto error_return;
|
|
|
|
} else if ( li->li_idle_timeout ) {
|
|
/* only touch when activity actually took place... */
|
|
lc_time = op->o_time;
|
|
}
|
|
#endif /* HAVE_TLS */
|
|
|
|
if ( *lcp == NULL ) {
|
|
*lcp = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
|
|
(*lcp)->lc_flags = li->li_flags;
|
|
}
|
|
(*lcp)->lc_ld = ld;
|
|
(*lcp)->lc_refcnt = 1;
|
|
(*lcp)->lc_binding = 1;
|
|
#ifdef HAVE_TLS
|
|
if ( is_tls ) {
|
|
LDAP_BACK_CONN_ISTLS_SET( *lcp );
|
|
} else {
|
|
LDAP_BACK_CONN_ISTLS_CLEAR( *lcp );
|
|
}
|
|
if ( lc_time != (time_t)(-1) ) {
|
|
(*lcp)->lc_time = lc_time;
|
|
}
|
|
#endif /* HAVE_TLS */
|
|
|
|
error_return:;
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
rs->sr_err = slap_map_api2result( rs );
|
|
if ( sendok & LDAP_BACK_SENDERR ) {
|
|
if ( rs->sr_text == NULL ) {
|
|
rs->sr_text = "ldap_initialize() failed";
|
|
}
|
|
send_ldap_result( op, rs );
|
|
rs->sr_text = NULL;
|
|
}
|
|
|
|
} else {
|
|
if ( li->li_conn_ttl > 0 ) {
|
|
(*lcp)->lc_create_time = op->o_time;
|
|
}
|
|
}
|
|
|
|
return rs->sr_err;
|
|
}
|
|
|
|
ldapconn_t *
|
|
ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
ldapconn_t *lc = NULL,
|
|
lc_curr = { 0 };
|
|
int refcnt = 1, binding = 1;
|
|
|
|
/* if the server is quarantined, and
|
|
* - the current interval did not expire yet, or
|
|
* - no more retries should occur,
|
|
* don't return the connection */
|
|
if ( li->li_isquarantined ) {
|
|
slap_retry_info_t *ri = &li->li_quarantine;
|
|
int dont_retry = 1;
|
|
|
|
ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
|
|
if ( li->li_isquarantined == LDAP_BACK_FQ_YES ) {
|
|
dont_retry = ( ri->ri_num[ ri->ri_idx ] == SLAP_RETRYNUM_TAIL
|
|
|| slap_get_time() < ri->ri_last + ri->ri_interval[ ri->ri_idx ] );
|
|
if ( !dont_retry ) {
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"%s: ldap_back_getconn quarantine "
|
|
"retry block #%d try #%d.\n",
|
|
op->o_log_prefix, ri->ri_idx, ri->ri_count );
|
|
li->li_isquarantined = LDAP_BACK_FQ_RETRYING;
|
|
}
|
|
}
|
|
ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
|
|
|
|
if ( dont_retry ) {
|
|
rs->sr_err = LDAP_UNAVAILABLE;
|
|
if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
|
|
send_ldap_result( op, rs );
|
|
}
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* Internal searches are privileged and shared. So is root. */
|
|
if ( op->o_do_not_cache || be_isroot( op ) ) {
|
|
LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
|
|
lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
|
|
lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
|
|
|
|
} else {
|
|
lc_curr.lc_local_ndn = op->o_ndn;
|
|
/* Explicit binds must not be shared */
|
|
if ( op->o_tag == LDAP_REQ_BIND || SLAP_IS_AUTHZ_BACKEND( op ) ) {
|
|
lc_curr.lc_conn = op->o_conn;
|
|
|
|
} else {
|
|
lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
|
|
}
|
|
}
|
|
|
|
/* Explicit Bind requests always get their own conn */
|
|
if ( !( sendok & LDAP_BACK_BINDING ) ) {
|
|
/* Searches for a ldapconn in the avl tree */
|
|
retry_lock:
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
|
|
lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
|
|
(caddr_t)&lc_curr, ldap_back_conndn_cmp );
|
|
if ( lc != NULL ) {
|
|
/* Don't reuse connections while they're still binding */
|
|
if ( LDAP_BACK_CONN_BINDING( lc ) ) {
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
ldap_pvt_thread_yield();
|
|
goto retry_lock;
|
|
}
|
|
|
|
refcnt = ++lc->lc_refcnt;
|
|
binding = ++lc->lc_binding;
|
|
}
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
|
|
/* Looks like we didn't get a bind. Open a new session... */
|
|
if ( lc == NULL ) {
|
|
if ( ldap_back_prepare_conn( &lc, op, rs, sendok ) != LDAP_SUCCESS ) {
|
|
return NULL;
|
|
}
|
|
if ( sendok & LDAP_BACK_BINDING ) {
|
|
LDAP_BACK_CONN_BINDING_SET( lc );
|
|
}
|
|
lc->lc_conn = lc_curr.lc_conn;
|
|
ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
|
|
|
|
if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
|
|
ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
|
|
ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
|
|
LDAP_BACK_CONN_ISPRIV_SET( lc );
|
|
|
|
} else {
|
|
BER_BVZERO( &lc->lc_cred );
|
|
BER_BVZERO( &lc->lc_bound_ndn );
|
|
if ( !BER_BVISEMPTY( &op->o_ndn )
|
|
&& SLAP_IS_AUTHZ_BACKEND( op ) )
|
|
{
|
|
ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_TLS
|
|
/* if start TLS failed but it was not mandatory,
|
|
* check if the non-TLS connection was already
|
|
* in cache; in case, destroy the newly created
|
|
* connection and use the existing one */
|
|
if ( lc->lc_conn == LDAP_BACK_PCONN_TLS
|
|
&& !ldap_tls_inplace( lc->lc_ld ) )
|
|
{
|
|
ldapconn_t *tmplc;
|
|
|
|
lc_curr.lc_conn = LDAP_BACK_PCONN;
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
tmplc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
|
|
(caddr_t)&lc_curr, ldap_back_conndn_cmp );
|
|
if ( tmplc != NULL ) {
|
|
refcnt = ++tmplc->lc_refcnt;
|
|
binding = ++tmplc->lc_binding;
|
|
ldap_back_conn_free( lc );
|
|
lc = tmplc;
|
|
}
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
|
|
if ( tmplc != NULL ) {
|
|
goto done;
|
|
}
|
|
}
|
|
#endif /* HAVE_TLS */
|
|
|
|
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
|
|
|
|
/* Inserts the newly created ldapconn in the avl tree */
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
|
|
assert( lc->lc_refcnt == 1 );
|
|
assert( lc->lc_binding == 1 );
|
|
rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
|
|
ldap_back_conndn_cmp, ldap_back_conndn_dup );
|
|
|
|
#if PRINT_CONNTREE > 0
|
|
myprint( li->li_conninfo.lai_tree, "ldap_back_getconn" );
|
|
#endif /* PRINT_CONNTREE */
|
|
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"=>ldap_back_getconn: conn %p inserted refcnt=%u binding=%u\n",
|
|
(void *)lc, refcnt, binding );
|
|
|
|
/* Err could be -1 in case a duplicate ldapconn is inserted */
|
|
switch ( rs->sr_err ) {
|
|
case 0:
|
|
break;
|
|
|
|
case -1:
|
|
if ( !( sendok & LDAP_BACK_BINDING ) ) {
|
|
/* duplicate: free and try to get the newly created one */
|
|
goto retry_lock;
|
|
}
|
|
/* taint connection, so that it'll be freed when released */
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
(void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
|
|
ldap_back_conndnlc_cmp );
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
LDAP_BACK_CONN_TAINTED_SET( lc );
|
|
break;
|
|
|
|
default:
|
|
ldap_back_conn_free( lc );
|
|
rs->sr_err = LDAP_OTHER;
|
|
rs->sr_text = "proxy bind collision";
|
|
if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
|
|
send_ldap_result( op, rs );
|
|
rs->sr_text = NULL;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
} else {
|
|
int expiring = 0;
|
|
|
|
if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
|
|
|| ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
|
|
{
|
|
expiring = 1;
|
|
|
|
/* let it be used, but taint/delete it so that
|
|
* no-one else can look it up any further */
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
(void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
|
|
ldap_back_conndnlc_cmp );
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
LDAP_BACK_CONN_TAINTED_SET( lc );
|
|
}
|
|
|
|
if ( LogTest( LDAP_DEBUG_TRACE ) ) {
|
|
char buf[ SLAP_TEXT_BUFLEN ];
|
|
|
|
snprintf( buf, sizeof( buf ),
|
|
"conn %p fetched refcnt=%u binding=%u%s",
|
|
(void *)lc, refcnt, binding, expiring ? " expiring" : "" );
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"=>ldap_back_getconn: %s.\n", buf, 0, 0 );
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_TLS
|
|
done:;
|
|
#endif /* HAVE_TLS */
|
|
|
|
return lc;
|
|
}
|
|
|
|
void
|
|
ldap_back_release_conn_lock(
|
|
Operation *op,
|
|
SlapReply *rs,
|
|
ldapconn_t *lc,
|
|
int dolock )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
assert( lc->lc_refcnt > 0 );
|
|
LDAP_BACK_CONN_BINDING_CLEAR( lc );
|
|
lc->lc_refcnt--;
|
|
if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
|
|
ldap_back_freeconn( op, lc, 0 );
|
|
}
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
}
|
|
|
|
void
|
|
ldap_back_quarantine(
|
|
Operation *op,
|
|
SlapReply *rs )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
|
|
slap_retry_info_t *ri = &li->li_quarantine;
|
|
|
|
ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
|
|
|
|
if ( rs->sr_err == LDAP_UNAVAILABLE ) {
|
|
time_t new_last = slap_get_time();
|
|
|
|
switch ( li->li_isquarantined ) {
|
|
case LDAP_BACK_FQ_NO:
|
|
if ( ri->ri_last == new_last ) {
|
|
goto done;
|
|
}
|
|
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"%s: ldap_back_quarantine enter.\n",
|
|
op->o_log_prefix, 0, 0 );
|
|
|
|
ri->ri_idx = 0;
|
|
ri->ri_count = 0;
|
|
break;
|
|
|
|
case LDAP_BACK_FQ_RETRYING:
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"%s: ldap_back_quarantine block #%d try #%d failed.\n",
|
|
op->o_log_prefix, ri->ri_idx, ri->ri_count );
|
|
|
|
++ri->ri_count;
|
|
if ( ri->ri_num[ ri->ri_idx ] != SLAP_RETRYNUM_FOREVER
|
|
&& ri->ri_count == ri->ri_num[ ri->ri_idx ] )
|
|
{
|
|
ri->ri_count = 0;
|
|
++ri->ri_idx;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
li->li_isquarantined = LDAP_BACK_FQ_YES;
|
|
ri->ri_last = new_last;
|
|
|
|
} else if ( li->li_isquarantined != LDAP_BACK_FQ_NO ) {
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"%s: ldap_back_quarantine exit.\n",
|
|
op->o_log_prefix, ri->ri_idx, ri->ri_count );
|
|
|
|
if ( li->li_quarantine_f ) {
|
|
(void)li->li_quarantine_f( li, li->li_quarantine_p );
|
|
}
|
|
|
|
ri->ri_count = 0;
|
|
ri->ri_idx = 0;
|
|
li->li_isquarantined = LDAP_BACK_FQ_NO;
|
|
}
|
|
|
|
done:;
|
|
ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
|
|
}
|
|
|
|
/*
|
|
* ldap_back_dobind
|
|
*
|
|
* Note: as the check for the value of lc->lc_bound was already here, I removed
|
|
* it from all the callers, and I made the function return the flag, so
|
|
* it can be used to simplify the check.
|
|
*
|
|
* Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
|
|
*/
|
|
static int
|
|
ldap_back_dobind_int(
|
|
ldapconn_t *lc,
|
|
Operation *op,
|
|
SlapReply *rs,
|
|
ldap_back_send_t sendok,
|
|
int retries,
|
|
int dolock )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
|
|
int rc,
|
|
isbound,
|
|
binding = 0;
|
|
ber_int_t msgid;
|
|
|
|
assert( retries >= 0 );
|
|
|
|
retry_lock:;
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
|
|
if ( binding == 0 ) {
|
|
/* check if already bound */
|
|
rc = isbound = LDAP_BACK_CONN_ISBOUND( lc );
|
|
if ( isbound ) {
|
|
lc->lc_binding--;
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
if ( LDAP_BACK_CONN_BINDING( lc ) ) {
|
|
/* if someone else is about to bind it, give up and retry */
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
ldap_pvt_thread_yield();
|
|
goto retry_lock;
|
|
|
|
} else {
|
|
/* otherwise this thread will bind it */
|
|
LDAP_BACK_CONN_BINDING_SET( lc );
|
|
binding = 1;
|
|
}
|
|
}
|
|
|
|
/* wait for pending operations to finish */
|
|
/* FIXME: may become a bottleneck! */
|
|
if ( lc->lc_refcnt != lc->lc_binding ) {
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
ldap_pvt_thread_yield();
|
|
goto retry_lock;
|
|
}
|
|
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
|
|
/*
|
|
* FIXME: we need to let clients use proxyAuthz
|
|
* otherwise we cannot do symmetric pools of servers;
|
|
* we have to live with the fact that a user can
|
|
* authorize itself as any ID that is allowed
|
|
* by the authzTo directive of the "proxyauthzdn".
|
|
*/
|
|
/*
|
|
* NOTE: current Proxy Authorization specification
|
|
* and implementation do not allow proxy authorization
|
|
* control to be provided with Bind requests
|
|
*/
|
|
/*
|
|
* if no bind took place yet, but the connection is bound
|
|
* and the "idassert-authcDN" (or other ID) is set,
|
|
* then bind as the asserting identity and explicitly
|
|
* add the proxyAuthz control to every operation with the
|
|
* dn bound to the connection as control value.
|
|
* This is done also if this is the authrizing backend,
|
|
* but the "override" flag is given to idassert.
|
|
* It allows to use SASL bind and yet proxyAuthz users
|
|
*/
|
|
if ( op->o_conn != NULL && !op->o_do_not_cache &&
|
|
( !LDAP_BACK_CONN_ISPRIV( lc ) || BER_BVISEMPTY( &lc->lc_bound_ndn )) &&
|
|
( !isbound || ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
|
|
{
|
|
(void)ldap_back_proxy_authz_bind( lc, op, rs, sendok );
|
|
goto done;
|
|
}
|
|
|
|
#ifdef HAVE_CYRUS_SASL
|
|
if ( LDAP_BACK_CONN_ISPRIV( lc )
|
|
&& li->li_acl_authmethod == LDAP_AUTH_SASL )
|
|
{
|
|
void *defaults = NULL;
|
|
|
|
if ( li->li_acl_secprops != NULL ) {
|
|
rc = ldap_set_option( lc->lc_ld,
|
|
LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops );
|
|
|
|
if ( rc != LDAP_OPT_SUCCESS ) {
|
|
Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
|
|
"(SECPROPS,\"%s\") failed!\n",
|
|
li->li_acl_secprops, 0, 0 );
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
defaults = lutil_sasl_defaults( lc->lc_ld,
|
|
li->li_acl_sasl_mech.bv_val,
|
|
li->li_acl_sasl_realm.bv_val,
|
|
li->li_acl_authcID.bv_val,
|
|
li->li_acl_passwd.bv_val,
|
|
NULL );
|
|
|
|
rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
|
|
li->li_acl_authcDN.bv_val,
|
|
li->li_acl_sasl_mech.bv_val, NULL, NULL,
|
|
LDAP_SASL_QUIET, lutil_sasl_interact,
|
|
defaults );
|
|
|
|
lutil_sasl_freedefs( defaults );
|
|
|
|
rs->sr_err = slap_map_api2result( rs );
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
|
|
send_ldap_result( op, rs );
|
|
|
|
} else {
|
|
LDAP_BACK_CONN_ISBOUND_SET( lc );
|
|
}
|
|
|
|
if ( LDAP_BACK_QUARANTINE( li ) ) {
|
|
ldap_back_quarantine( op, rs );
|
|
}
|
|
|
|
goto done;
|
|
}
|
|
#endif /* HAVE_CYRUS_SASL */
|
|
|
|
retry:;
|
|
rs->sr_err = ldap_sasl_bind( lc->lc_ld,
|
|
BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
|
|
LDAP_SASL_SIMPLE, &lc->lc_cred,
|
|
NULL, NULL, &msgid );
|
|
|
|
if ( rs->sr_err == LDAP_SERVER_DOWN ) {
|
|
if ( retries != LDAP_BACK_RETRY_NEVER ) {
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
|
|
assert( lc->lc_refcnt > 0 );
|
|
if ( lc->lc_refcnt == 1 ) {
|
|
ldap_unbind_ext( lc->lc_ld, NULL, NULL );
|
|
lc->lc_ld = NULL;
|
|
|
|
/* lc here must be the regular lc, reset and ready for init */
|
|
rs->sr_err = ldap_back_prepare_conn( &lc, op, rs, sendok );
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
lc->lc_binding--;
|
|
lc->lc_refcnt = 0;
|
|
}
|
|
}
|
|
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
|
|
if ( rs->sr_err == LDAP_SUCCESS ) {
|
|
if ( retries > 0 ) {
|
|
retries--;
|
|
}
|
|
goto retry;
|
|
}
|
|
|
|
} else {
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
lc->lc_binding--;
|
|
if ( dolock ) {
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
}
|
|
}
|
|
|
|
/* FIXME: one binding-- too many? */
|
|
lc->lc_binding--;
|
|
ldap_back_freeconn( op, lc, dolock );
|
|
rs->sr_err = slap_map_api2result( rs );
|
|
|
|
if ( LDAP_BACK_QUARANTINE( li ) ) {
|
|
ldap_back_quarantine( op, rs );
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
rc = ldap_back_op_result( lc, op, rs, msgid,
|
|
-1, (sendok|LDAP_BACK_BINDING) );
|
|
if ( rc == LDAP_SUCCESS ) {
|
|
LDAP_BACK_CONN_ISBOUND_SET( lc );
|
|
}
|
|
|
|
done:;
|
|
lc->lc_binding--;
|
|
LDAP_BACK_CONN_BINDING_CLEAR( lc );
|
|
rc = LDAP_BACK_CONN_ISBOUND( lc );
|
|
if ( !rc ) {
|
|
ldap_back_release_conn_lock( op, rs, lc, dolock );
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
ldap_back_dobind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
|
|
return ldap_back_dobind_int( lc, op, rs, sendok, li->li_nretries, 1 );
|
|
}
|
|
|
|
/*
|
|
* ldap_back_default_rebind
|
|
*
|
|
* This is a callback used for chasing referrals using the same
|
|
* credentials as the original user on this session.
|
|
*/
|
|
int
|
|
ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
|
|
ber_int_t msgid, void *params )
|
|
{
|
|
ldapconn_t *lc = (ldapconn_t *)params;
|
|
|
|
#ifdef HAVE_TLS
|
|
/* ... otherwise we couldn't get here */
|
|
assert( lc != NULL );
|
|
|
|
if ( !ldap_tls_inplace( ld ) ) {
|
|
int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
|
|
rc;
|
|
const char *text = NULL;
|
|
|
|
rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
|
|
LDAP_BACK_RETRY_DEFAULT, &text );
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
return rc;
|
|
}
|
|
}
|
|
#endif /* HAVE_TLS */
|
|
|
|
/* FIXME: add checks on the URL/identity? */
|
|
|
|
return ldap_sasl_bind_s( ld,
|
|
BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
|
|
LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
|
|
}
|
|
|
|
/*
|
|
* ldap_back_default_urllist
|
|
*/
|
|
int
|
|
ldap_back_default_urllist(
|
|
LDAP *ld,
|
|
LDAPURLDesc **urllist,
|
|
LDAPURLDesc **url,
|
|
void *params )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)params;
|
|
LDAPURLDesc **urltail;
|
|
|
|
if ( urllist == url ) {
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
for ( urltail = &(*url)->lud_next; *urltail; urltail = &(*urltail)->lud_next )
|
|
/* count */ ;
|
|
|
|
*urltail = *urllist;
|
|
*urllist = *url;
|
|
*url = NULL;
|
|
|
|
ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
|
|
if ( li->li_uri ) {
|
|
ch_free( li->li_uri );
|
|
}
|
|
|
|
ldap_get_option( ld, LDAP_OPT_URI, (void *)&li->li_uri );
|
|
ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
|
|
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
int
|
|
ldap_back_cancel(
|
|
ldapconn_t *lc,
|
|
Operation *op,
|
|
SlapReply *rs,
|
|
ber_int_t msgid,
|
|
ldap_back_send_t sendok )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
|
|
/* default behavior */
|
|
if ( LDAP_BACK_ABANDON( li ) ) {
|
|
return ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
|
|
}
|
|
|
|
if ( LDAP_BACK_IGNORE( li ) ) {
|
|
return LDAP_SUCCESS;
|
|
}
|
|
|
|
if ( LDAP_BACK_CANCEL( li ) ) {
|
|
/* FIXME: asynchronous? */
|
|
return ldap_cancel_s( lc->lc_ld, msgid, NULL, NULL );
|
|
}
|
|
|
|
assert( 0 );
|
|
|
|
return LDAP_OTHER;
|
|
}
|
|
|
|
int
|
|
ldap_back_op_result(
|
|
ldapconn_t *lc,
|
|
Operation *op,
|
|
SlapReply *rs,
|
|
ber_int_t msgid,
|
|
time_t timeout,
|
|
ldap_back_send_t sendok )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
|
|
char *match = NULL;
|
|
char *text = NULL;
|
|
char **refs = NULL;
|
|
LDAPControl **ctrls = NULL;
|
|
|
|
#define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
|
|
|
|
rs->sr_text = NULL;
|
|
rs->sr_matched = NULL;
|
|
rs->sr_ref = NULL;
|
|
rs->sr_ctrls = NULL;
|
|
|
|
/* if the error recorded in the reply corresponds
|
|
* to a successful state, get the error from the
|
|
* remote server response */
|
|
if ( ERR_OK( rs->sr_err ) ) {
|
|
int rc;
|
|
struct timeval tv;
|
|
LDAPMessage *res = NULL;
|
|
time_t stoptime = (time_t)(-1);
|
|
int timeout_err = op->o_protocol >= LDAP_VERSION3 ?
|
|
LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
|
|
const char *timeout_text = "Operation timed out";
|
|
|
|
/* if timeout is not specified, compute and use
|
|
* the one specific to the ongoing operation */
|
|
if ( timeout == (time_t)(-1) ) {
|
|
slap_op_t opidx = slap_req2op( op->o_tag );
|
|
|
|
if ( opidx == SLAP_OP_SEARCH ) {
|
|
if ( op->ors_tlimit <= 0 ) {
|
|
timeout = 0;
|
|
|
|
} else {
|
|
timeout = op->ors_tlimit;
|
|
timeout_err = LDAP_TIMELIMIT_EXCEEDED;
|
|
timeout_text = NULL;
|
|
}
|
|
|
|
} else {
|
|
timeout = li->li_timeout[ opidx ];
|
|
}
|
|
}
|
|
|
|
/* better than nothing :) */
|
|
if ( timeout == 0 ) {
|
|
if ( li->li_idle_timeout ) {
|
|
timeout = li->li_idle_timeout;
|
|
|
|
} else if ( li->li_conn_ttl ) {
|
|
timeout = li->li_conn_ttl;
|
|
}
|
|
}
|
|
|
|
if ( timeout ) {
|
|
stoptime = op->o_time + timeout;
|
|
}
|
|
|
|
LDAP_BACK_TV_SET( &tv );
|
|
|
|
retry:;
|
|
/* if result parsing fails, note the failure reason */
|
|
rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
|
|
switch ( rc ) {
|
|
case 0:
|
|
if ( timeout && slap_get_time() > stoptime ) {
|
|
if ( sendok & LDAP_BACK_BINDING ) {
|
|
ldap_unbind_ext( lc->lc_ld, NULL, NULL );
|
|
lc->lc_ld = NULL;
|
|
LDAP_BACK_CONN_TAINTED_SET( lc );
|
|
|
|
} else {
|
|
(void)ldap_back_cancel( lc, op, rs, msgid, sendok );
|
|
}
|
|
rs->sr_err = timeout_err;
|
|
rs->sr_text = timeout_text;
|
|
break;
|
|
}
|
|
|
|
/* timeout == 0 */
|
|
LDAP_BACK_TV_SET( &tv );
|
|
ldap_pvt_thread_yield();
|
|
goto retry;
|
|
|
|
case -1:
|
|
ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
|
|
&rs->sr_err );
|
|
break;
|
|
|
|
|
|
/* otherwise get the result; if it is not
|
|
* LDAP_SUCCESS, record it in the reply
|
|
* structure (this includes
|
|
* LDAP_COMPARE_{TRUE|FALSE}) */
|
|
default:
|
|
/* only touch when activity actually took place... */
|
|
if ( li->li_idle_timeout && lc ) {
|
|
lc->lc_time = op->o_time;
|
|
}
|
|
|
|
rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
|
|
&match, &text, &refs, &ctrls, 1 );
|
|
rs->sr_text = text;
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
rs->sr_err = rc;
|
|
}
|
|
if ( refs != NULL ) {
|
|
int i;
|
|
|
|
for ( i = 0; refs[ i ] != NULL; i++ )
|
|
/* count */ ;
|
|
rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
|
|
op->o_tmpmemctx );
|
|
for ( i = 0; refs[ i ] != NULL; i++ ) {
|
|
ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
|
|
}
|
|
BER_BVZERO( &rs->sr_ref[ i ] );
|
|
}
|
|
if ( ctrls != NULL ) {
|
|
rs->sr_ctrls = ctrls;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* if the error in the reply structure is not
|
|
* LDAP_SUCCESS, try to map it from client
|
|
* to server error */
|
|
if ( !ERR_OK( rs->sr_err ) ) {
|
|
rs->sr_err = slap_map_api2result( rs );
|
|
|
|
/* internal ops ( op->o_conn == NULL )
|
|
* must not reply to client */
|
|
if ( op->o_conn && !op->o_do_not_cache && match ) {
|
|
|
|
/* record the (massaged) matched
|
|
* DN into the reply structure */
|
|
rs->sr_matched = match;
|
|
}
|
|
}
|
|
|
|
if ( rs->sr_err == LDAP_UNAVAILABLE ) {
|
|
if ( !( sendok & LDAP_BACK_RETRYING ) ) {
|
|
if ( LDAP_BACK_QUARANTINE( li ) ) {
|
|
ldap_back_quarantine( op, rs );
|
|
}
|
|
if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
|
|
send_ldap_result( op, rs );
|
|
}
|
|
}
|
|
|
|
} else if ( op->o_conn &&
|
|
( ( ( sendok & LDAP_BACK_SENDOK ) && ERR_OK( rs->sr_err ) )
|
|
|| ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
|
|
{
|
|
send_ldap_result( op, rs );
|
|
}
|
|
|
|
if ( match ) {
|
|
if ( rs->sr_matched != match ) {
|
|
free( (char *)rs->sr_matched );
|
|
}
|
|
rs->sr_matched = NULL;
|
|
ldap_memfree( match );
|
|
}
|
|
|
|
if ( text ) {
|
|
ldap_memfree( text );
|
|
}
|
|
rs->sr_text = NULL;
|
|
|
|
if ( rs->sr_ref ) {
|
|
assert( refs != NULL );
|
|
ber_memvfree( (void **)refs );
|
|
op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
|
|
rs->sr_ref = NULL;
|
|
}
|
|
|
|
if ( ctrls ) {
|
|
assert( rs->sr_ctrls != NULL );
|
|
ldap_controls_free( ctrls );
|
|
rs->sr_ctrls = NULL;
|
|
}
|
|
|
|
return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
|
|
}
|
|
|
|
/* return true if bound, false if failed */
|
|
int
|
|
ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
|
|
{
|
|
int rc = 0;
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
|
|
assert( lcp != NULL );
|
|
assert( *lcp != NULL );
|
|
|
|
ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
|
|
|
|
if ( (*lcp)->lc_refcnt == 1 ) {
|
|
ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
|
|
Debug( LDAP_DEBUG_ANY,
|
|
"%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
|
|
op->o_log_prefix, li->li_uri,
|
|
BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
|
|
"" : (*lcp)->lc_bound_ndn.bv_val );
|
|
ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
|
|
|
|
ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
|
|
(*lcp)->lc_ld = NULL;
|
|
LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
|
|
|
|
/* lc here must be the regular lc, reset and ready for init */
|
|
rc = ldap_back_prepare_conn( lcp, op, rs, sendok );
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
rc = 0;
|
|
/* freeit, because lc_refcnt == 1 */
|
|
(*lcp)->lc_refcnt = 0;
|
|
(void)ldap_back_freeconn( op, *lcp, 0 );
|
|
*lcp = NULL;
|
|
|
|
} else {
|
|
rc = ldap_back_dobind_int( *lcp, op, rs, sendok, 0, 0 );
|
|
if ( rc == 0 && *lcp != NULL ) {
|
|
/* freeit, because lc_refcnt == 1 */
|
|
(*lcp)->lc_refcnt = 0;
|
|
LDAP_BACK_CONN_TAINTED_SET( *lcp );
|
|
(void)ldap_back_freeconn( op, *lcp, 0 );
|
|
*lcp = NULL;
|
|
}
|
|
}
|
|
|
|
} else {
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
|
|
(void *)(*lcp), (*lcp)->lc_refcnt, 0 );
|
|
|
|
LDAP_BACK_CONN_TAINTED_SET( *lcp );
|
|
ldap_back_release_conn_lock( op, rs, *lcp, 0 );
|
|
*lcp = NULL;
|
|
|
|
if ( sendok ) {
|
|
rs->sr_err = LDAP_UNAVAILABLE;
|
|
rs->sr_text = "unable to retry";
|
|
send_ldap_result( op, rs );
|
|
}
|
|
}
|
|
|
|
ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
|
|
{
|
|
ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
|
|
struct berval binddn = slap_empty_bv;
|
|
struct berval bindcred = slap_empty_bv;
|
|
struct berval ndn;
|
|
int dobind = 0;
|
|
int msgid;
|
|
int rc;
|
|
|
|
/* don't proxyAuthz if protocol is not LDAPv3 */
|
|
switch ( li->li_version ) {
|
|
case LDAP_VERSION3:
|
|
break;
|
|
|
|
case 0:
|
|
if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
|
|
break;
|
|
}
|
|
/* fall thru */
|
|
|
|
default:
|
|
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
|
|
if ( sendok & LDAP_BACK_SENDERR ) {
|
|
send_ldap_result( op, rs );
|
|
}
|
|
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
|
|
goto done;
|
|
}
|
|
|
|
if ( op->o_tag == LDAP_REQ_BIND ) {
|
|
ndn = op->o_req_ndn;
|
|
|
|
} else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
|
|
ndn = op->o_conn->c_ndn;
|
|
|
|
} else {
|
|
ndn = op->o_ndn;
|
|
}
|
|
|
|
/*
|
|
* FIXME: we need to let clients use proxyAuthz
|
|
* otherwise we cannot do symmetric pools of servers;
|
|
* we have to live with the fact that a user can
|
|
* authorize itself as any ID that is allowed
|
|
* by the authzTo directive of the "proxyauthzdn".
|
|
*/
|
|
/*
|
|
* NOTE: current Proxy Authorization specification
|
|
* and implementation do not allow proxy authorization
|
|
* control to be provided with Bind requests
|
|
*/
|
|
/*
|
|
* if no bind took place yet, but the connection is bound
|
|
* and the "proxyauthzdn" is set, then bind as
|
|
* "proxyauthzdn" and explicitly add the proxyAuthz
|
|
* control to every operation with the dn bound
|
|
* to the connection as control value.
|
|
*/
|
|
|
|
/* bind as proxyauthzdn only if no idassert mode
|
|
* is requested, or if the client's identity
|
|
* is authorized */
|
|
switch ( li->li_idassert_mode ) {
|
|
case LDAP_BACK_IDASSERT_LEGACY:
|
|
if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
|
|
if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
|
|
{
|
|
binddn = li->li_idassert_authcDN;
|
|
bindcred = li->li_idassert_passwd;
|
|
dobind = 1;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
/* NOTE: rootdn can always idassert */
|
|
if ( BER_BVISNULL( &ndn ) && li->li_idassert_authz == NULL ) {
|
|
if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
|
|
rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
|
|
if ( sendok & LDAP_BACK_SENDERR ) {
|
|
send_ldap_result( op, rs );
|
|
}
|
|
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
|
|
|
|
} else {
|
|
rs->sr_err = LDAP_SUCCESS;
|
|
binddn = slap_empty_bv;
|
|
bindcred = slap_empty_bv;
|
|
break;
|
|
}
|
|
|
|
goto done;
|
|
|
|
} else if ( li->li_idassert_authz && !be_isroot( op ) ) {
|
|
struct berval authcDN;
|
|
|
|
if ( BER_BVISNULL( &ndn ) ) {
|
|
authcDN = slap_empty_bv;
|
|
|
|
} else {
|
|
authcDN = ndn;
|
|
}
|
|
rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
|
|
&authcDN, &authcDN );
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
|
|
if ( sendok & LDAP_BACK_SENDERR ) {
|
|
send_ldap_result( op, rs );
|
|
}
|
|
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
|
|
|
|
} else {
|
|
rs->sr_err = LDAP_SUCCESS;
|
|
binddn = slap_empty_bv;
|
|
bindcred = slap_empty_bv;
|
|
break;
|
|
}
|
|
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
binddn = li->li_idassert_authcDN;
|
|
bindcred = li->li_idassert_passwd;
|
|
dobind = 1;
|
|
break;
|
|
}
|
|
|
|
if ( dobind && li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
|
|
#ifdef HAVE_CYRUS_SASL
|
|
void *defaults = NULL;
|
|
struct berval authzID = BER_BVNULL;
|
|
int freeauthz = 0;
|
|
|
|
/* if SASL supports native authz, prepare for it */
|
|
if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
|
|
( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
|
|
{
|
|
switch ( li->li_idassert_mode ) {
|
|
case LDAP_BACK_IDASSERT_OTHERID:
|
|
case LDAP_BACK_IDASSERT_OTHERDN:
|
|
authzID = li->li_idassert_authzID;
|
|
break;
|
|
|
|
case LDAP_BACK_IDASSERT_ANONYMOUS:
|
|
BER_BVSTR( &authzID, "dn:" );
|
|
break;
|
|
|
|
case LDAP_BACK_IDASSERT_SELF:
|
|
if ( BER_BVISNULL( &ndn ) ) {
|
|
/* connection is not authc'd, so don't idassert */
|
|
BER_BVSTR( &authzID, "dn:" );
|
|
break;
|
|
}
|
|
authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
|
|
authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
|
|
AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
|
|
AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
|
|
ndn.bv_val, ndn.bv_len + 1 );
|
|
freeauthz = 1;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( li->li_idassert_secprops != NULL ) {
|
|
rs->sr_err = ldap_set_option( lc->lc_ld,
|
|
LDAP_OPT_X_SASL_SECPROPS,
|
|
(void *)li->li_idassert_secprops );
|
|
|
|
if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
|
|
rs->sr_err = LDAP_OTHER;
|
|
if ( sendok & LDAP_BACK_SENDERR ) {
|
|
send_ldap_result( op, rs );
|
|
}
|
|
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
defaults = lutil_sasl_defaults( lc->lc_ld,
|
|
li->li_idassert_sasl_mech.bv_val,
|
|
li->li_idassert_sasl_realm.bv_val,
|
|
li->li_idassert_authcID.bv_val,
|
|
li->li_idassert_passwd.bv_val,
|
|
authzID.bv_val );
|
|
|
|
rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn.bv_val,
|
|
li->li_idassert_sasl_mech.bv_val, NULL, NULL,
|
|
LDAP_SASL_QUIET, lutil_sasl_interact,
|
|
defaults );
|
|
|
|
rs->sr_err = slap_map_api2result( rs );
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
|
|
if ( sendok & LDAP_BACK_SENDERR ) {
|
|
send_ldap_result( op, rs );
|
|
}
|
|
|
|
} else {
|
|
LDAP_BACK_CONN_ISBOUND_SET( lc );
|
|
}
|
|
|
|
lutil_sasl_freedefs( defaults );
|
|
if ( freeauthz ) {
|
|
slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
|
|
}
|
|
|
|
goto done;
|
|
#endif /* HAVE_CYRUS_SASL */
|
|
}
|
|
|
|
switch ( li->li_idassert_authmethod ) {
|
|
case LDAP_AUTH_NONE:
|
|
BER_BVSTR( &binddn, "" );
|
|
BER_BVSTR( &bindcred, "" );
|
|
/* fallthru */
|
|
|
|
case LDAP_AUTH_SIMPLE:
|
|
rs->sr_err = ldap_sasl_bind( lc->lc_ld,
|
|
binddn.bv_val, LDAP_SASL_SIMPLE,
|
|
&bindcred, NULL, NULL, &msgid );
|
|
rc = ldap_back_op_result( lc, op, rs, msgid,
|
|
-1, (sendok|LDAP_BACK_BINDING) );
|
|
break;
|
|
|
|
default:
|
|
/* unsupported! */
|
|
LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
|
|
rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
|
|
if ( sendok & LDAP_BACK_SENDERR ) {
|
|
send_ldap_result( op, rs );
|
|
}
|
|
goto done;
|
|
}
|
|
|
|
if ( rc == LDAP_SUCCESS ) {
|
|
/* set rebind stuff in case of successful proxyAuthz bind,
|
|
* so that referral chasing is attempted using the right
|
|
* identity */
|
|
LDAP_BACK_CONN_ISBOUND_SET( lc );
|
|
ber_bvreplace( &lc->lc_bound_ndn, &binddn );
|
|
|
|
if ( LDAP_BACK_SAVECRED( li ) ) {
|
|
if ( !BER_BVISNULL( &lc->lc_cred ) ) {
|
|
memset( lc->lc_cred.bv_val, 0,
|
|
lc->lc_cred.bv_len );
|
|
}
|
|
ber_bvreplace( &lc->lc_cred, &bindcred );
|
|
ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
|
|
}
|
|
}
|
|
done:;
|
|
return LDAP_BACK_CONN_ISBOUND( lc );
|
|
}
|
|
|
|
/*
|
|
* ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
|
|
* to existing server-side controls if required; if not,
|
|
* the existing server-side controls are placed in *pctrls.
|
|
* The caller, after using the controls in client API
|
|
* operations, if ( *pctrls != op->o_ctrls ), should
|
|
* free( (*pctrls)[ 0 ] ) and free( *pctrls ).
|
|
* The function returns success if the control could
|
|
* be added if required, or if it did nothing; in the future,
|
|
* it might return some error if it failed.
|
|
*
|
|
* if no bind took place yet, but the connection is bound
|
|
* and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
|
|
* and explicitly add proxyAuthz the control to every operation
|
|
* with the dn bound to the connection as control value.
|
|
*
|
|
* If no server-side controls are defined for the operation,
|
|
* simply add the proxyAuthz control; otherwise, if the
|
|
* proxyAuthz control is not already set, add it as
|
|
* the first one
|
|
*
|
|
* FIXME: is controls order significant for security?
|
|
* ANSWER: controls ordering and interoperability
|
|
* must be indicated by the specs of each control; if none
|
|
* is specified, the order is irrelevant.
|
|
*/
|
|
int
|
|
ldap_back_proxy_authz_ctrl(
|
|
struct berval *bound_ndn,
|
|
int version,
|
|
slap_idassert_t *si,
|
|
Operation *op,
|
|
SlapReply *rs,
|
|
LDAPControl ***pctrls )
|
|
{
|
|
LDAPControl **ctrls = NULL;
|
|
int i = 0;
|
|
slap_idassert_mode_t mode;
|
|
struct berval assertedID,
|
|
ndn;
|
|
|
|
*pctrls = NULL;
|
|
|
|
rs->sr_err = LDAP_SUCCESS;
|
|
|
|
/* don't proxyAuthz if protocol is not LDAPv3 */
|
|
switch ( version ) {
|
|
case LDAP_VERSION3:
|
|
break;
|
|
|
|
case 0:
|
|
if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
|
|
break;
|
|
}
|
|
/* fall thru */
|
|
|
|
default:
|
|
goto done;
|
|
}
|
|
|
|
/* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
|
|
* but if it is not set this test fails. We need a different
|
|
* means to detect if idassert is enabled */
|
|
if ( ( BER_BVISNULL( &si->si_bc.sb_authcId ) || BER_BVISEMPTY( &si->si_bc.sb_authcId ) )
|
|
&& ( BER_BVISNULL( &si->si_bc.sb_binddn ) || BER_BVISEMPTY( &si->si_bc.sb_binddn ) ) )
|
|
{
|
|
goto done;
|
|
}
|
|
|
|
if ( !op->o_conn || op->o_do_not_cache || be_isroot( op ) ) {
|
|
goto done;
|
|
}
|
|
|
|
if ( op->o_tag == LDAP_REQ_BIND ) {
|
|
ndn = op->o_req_ndn;
|
|
|
|
} else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
|
|
ndn = op->o_conn->c_ndn;
|
|
|
|
} else {
|
|
ndn = op->o_ndn;
|
|
}
|
|
|
|
if ( si->si_mode == LDAP_BACK_IDASSERT_LEGACY ) {
|
|
if ( op->o_proxy_authz ) {
|
|
/*
|
|
* FIXME: we do not want to perform proxyAuthz
|
|
* on behalf of the client, because this would
|
|
* be performed with "proxyauthzdn" privileges.
|
|
*
|
|
* This might actually be too strict, since
|
|
* the "proxyauthzdn" authzTo, and each entry's
|
|
* authzFrom attributes may be crafted
|
|
* to avoid unwanted proxyAuthz to take place.
|
|
*/
|
|
#if 0
|
|
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
|
|
rs->sr_text = "proxyAuthz not allowed within namingContext";
|
|
#endif
|
|
goto done;
|
|
}
|
|
|
|
if ( !BER_BVISNULL( bound_ndn ) ) {
|
|
goto done;
|
|
}
|
|
|
|
if ( BER_BVISNULL( &ndn ) ) {
|
|
goto done;
|
|
}
|
|
|
|
if ( BER_BVISNULL( &si->si_bc.sb_binddn ) ) {
|
|
goto done;
|
|
}
|
|
|
|
} else if ( si->si_bc.sb_method == LDAP_AUTH_SASL ) {
|
|
if ( ( si->si_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
|
|
{
|
|
/* already asserted in SASL via native authz */
|
|
goto done;
|
|
}
|
|
|
|
} else if ( si->si_authz && !be_isroot( op ) ) {
|
|
int rc;
|
|
struct berval authcDN;
|
|
|
|
if ( BER_BVISNULL( &ndn ) ) {
|
|
authcDN = slap_empty_bv;
|
|
} else {
|
|
authcDN = ndn;
|
|
}
|
|
rc = slap_sasl_matches( op, si->si_authz,
|
|
&authcDN, & authcDN );
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
if ( si->si_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
|
|
/* ndn is not authorized
|
|
* to use idassert */
|
|
rs->sr_err = rc;
|
|
}
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
if ( op->o_proxy_authz ) {
|
|
/*
|
|
* FIXME: we can:
|
|
* 1) ignore the already set proxyAuthz control
|
|
* 2) leave it in place, and don't set ours
|
|
* 3) add both
|
|
* 4) reject the operation
|
|
*
|
|
* option (4) is very drastic
|
|
* option (3) will make the remote server reject
|
|
* the operation, thus being equivalent to (4)
|
|
* option (2) will likely break the idassert
|
|
* assumptions, so we cannot accept it;
|
|
* option (1) means that we are contradicting
|
|
* the client's reques.
|
|
*
|
|
* I think (4) is the only correct choice.
|
|
*/
|
|
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
|
|
rs->sr_text = "proxyAuthz not allowed within namingContext";
|
|
}
|
|
|
|
if ( op->o_is_auth_check ) {
|
|
mode = LDAP_BACK_IDASSERT_NOASSERT;
|
|
|
|
} else {
|
|
mode = si->si_mode;
|
|
}
|
|
|
|
switch ( mode ) {
|
|
case LDAP_BACK_IDASSERT_SELF:
|
|
if ( BER_BVISNULL( &ndn ) ) {
|
|
goto done;
|
|
}
|
|
assertedID = ndn;
|
|
break;
|
|
|
|
case LDAP_BACK_IDASSERT_LEGACY:
|
|
/* original behavior:
|
|
* assert the client's identity */
|
|
if ( BER_BVISNULL( &ndn ) ) {
|
|
assertedID = slap_empty_bv;
|
|
} else {
|
|
assertedID = ndn;
|
|
}
|
|
break;
|
|
|
|
case LDAP_BACK_IDASSERT_ANONYMOUS:
|
|
/* assert "anonymous" */
|
|
assertedID = slap_empty_bv;
|
|
break;
|
|
|
|
case LDAP_BACK_IDASSERT_NOASSERT:
|
|
/* don't assert; bind as proxyauthzdn */
|
|
goto done;
|
|
|
|
case LDAP_BACK_IDASSERT_OTHERID:
|
|
case LDAP_BACK_IDASSERT_OTHERDN:
|
|
/* assert idassert DN */
|
|
assertedID = si->si_bc.sb_authzId;
|
|
break;
|
|
|
|
default:
|
|
assert( 0 );
|
|
}
|
|
|
|
if ( BER_BVISNULL( &assertedID ) ) {
|
|
assertedID = slap_empty_bv;
|
|
}
|
|
|
|
/* don't idassert the bound DN (ITS#4497) */
|
|
if ( dn_match( &assertedID, bound_ndn ) ) {
|
|
goto done;
|
|
}
|
|
|
|
if ( op->o_ctrls ) {
|
|
for ( i = 0; op->o_ctrls[ i ]; i++ )
|
|
/* just count ctrls */ ;
|
|
}
|
|
|
|
ctrls = op->o_tmpalloc( sizeof( LDAPControl * ) * (i + 2) + sizeof( LDAPControl ),
|
|
op->o_tmpmemctx );
|
|
ctrls[ 0 ] = (LDAPControl *)&ctrls[ i + 2 ];
|
|
|
|
ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
|
|
ctrls[ 0 ]->ldctl_iscritical = 1;
|
|
|
|
switch ( si->si_mode ) {
|
|
/* already in u:ID or dn:DN form */
|
|
case LDAP_BACK_IDASSERT_OTHERID:
|
|
case LDAP_BACK_IDASSERT_OTHERDN:
|
|
ber_dupbv_x( &ctrls[ 0 ]->ldctl_value, &assertedID, op->o_tmpmemctx );
|
|
break;
|
|
|
|
/* needs the dn: prefix */
|
|
default:
|
|
ctrls[ 0 ]->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
|
|
ctrls[ 0 ]->ldctl_value.bv_val = op->o_tmpalloc( ctrls[ 0 ]->ldctl_value.bv_len + 1,
|
|
op->o_tmpmemctx );
|
|
AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
|
|
AC_MEMCPY( &ctrls[ 0 ]->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
|
|
assertedID.bv_val, assertedID.bv_len + 1 );
|
|
break;
|
|
}
|
|
|
|
/* Older versions of <draft-weltman-ldapv3-proxy> required
|
|
* to encode the value of the authzID (and called it proxyDN);
|
|
* this hack provides compatibility with those DSAs that
|
|
* implement it this way */
|
|
if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
|
|
struct berval authzID = ctrls[ 0 ]->ldctl_value;
|
|
BerElementBuffer berbuf;
|
|
BerElement *ber = (BerElement *)&berbuf;
|
|
ber_tag_t tag;
|
|
|
|
ber_init2( ber, 0, LBER_USE_DER );
|
|
ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
|
|
|
|
tag = ber_printf( ber, "O", &authzID );
|
|
if ( tag == LBER_ERROR ) {
|
|
rs->sr_err = LDAP_OTHER;
|
|
goto free_ber;
|
|
}
|
|
|
|
if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
|
|
rs->sr_err = LDAP_OTHER;
|
|
goto free_ber;
|
|
}
|
|
|
|
free_ber:;
|
|
op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
|
|
ber_free_buf( ber );
|
|
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
op->o_tmpfree( ctrls, op->o_tmpmemctx );
|
|
ctrls = NULL;
|
|
goto done;
|
|
}
|
|
|
|
} else if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
|
|
struct berval authzID = ctrls[ 0 ]->ldctl_value,
|
|
tmp;
|
|
BerElementBuffer berbuf;
|
|
BerElement *ber = (BerElement *)&berbuf;
|
|
ber_tag_t tag;
|
|
|
|
if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
|
|
op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
|
|
op->o_tmpfree( ctrls, op->o_tmpmemctx );
|
|
ctrls = NULL;
|
|
rs->sr_err = LDAP_PROTOCOL_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
tmp = authzID;
|
|
tmp.bv_val += STRLENOF( "dn:" );
|
|
tmp.bv_len -= STRLENOF( "dn:" );
|
|
|
|
ber_init2( ber, 0, LBER_USE_DER );
|
|
ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
|
|
|
|
/* apparently, Mozilla API encodes this
|
|
* as "SEQUENCE { LDAPDN }" */
|
|
tag = ber_printf( ber, "{O}", &tmp );
|
|
if ( tag == LBER_ERROR ) {
|
|
rs->sr_err = LDAP_OTHER;
|
|
goto free_ber2;
|
|
}
|
|
|
|
if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
|
|
rs->sr_err = LDAP_OTHER;
|
|
goto free_ber2;
|
|
}
|
|
|
|
free_ber2:;
|
|
op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
|
|
ber_free_buf( ber );
|
|
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
op->o_tmpfree( ctrls, op->o_tmpmemctx );
|
|
ctrls = NULL;
|
|
goto done;
|
|
}
|
|
|
|
ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
|
|
}
|
|
|
|
if ( op->o_ctrls ) {
|
|
for ( i = 0; op->o_ctrls[ i ]; i++ ) {
|
|
ctrls[ i + 1 ] = op->o_ctrls[ i ];
|
|
}
|
|
}
|
|
ctrls[ i + 1 ] = NULL;
|
|
|
|
done:;
|
|
if ( ctrls == NULL ) {
|
|
ctrls = op->o_ctrls;
|
|
}
|
|
|
|
*pctrls = ctrls;
|
|
|
|
return rs->sr_err;
|
|
}
|
|
|
|
int
|
|
ldap_back_proxy_authz_ctrl_free( Operation *op, LDAPControl ***pctrls )
|
|
{
|
|
LDAPControl **ctrls = *pctrls;
|
|
|
|
/* we assume that the first control is the proxyAuthz
|
|
* added by back-ldap, so it's the only one we explicitly
|
|
* free */
|
|
if ( ctrls && ctrls != op->o_ctrls ) {
|
|
assert( ctrls[ 0 ] != NULL );
|
|
|
|
if ( !BER_BVISNULL( &ctrls[ 0 ]->ldctl_value ) ) {
|
|
op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
|
|
}
|
|
|
|
op->o_tmpfree( ctrls, op->o_tmpmemctx );
|
|
}
|
|
|
|
*pctrls = NULL;
|
|
|
|
return 0;
|
|
}
|