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749 lines
17 KiB
C
749 lines
17 KiB
C
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1999-2005 The OpenLDAP Foundation.
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* Portions Copyright 2001-2003 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 the 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/back-ldap.h"
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#include "back-meta.h"
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static LDAP_REBIND_PROC meta_back_rebind;
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static int
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meta_back_single_bind(
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Operation *op,
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SlapReply *rs,
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metaconn_t *mc,
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int candidate );
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int
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meta_back_bind( Operation *op, SlapReply *rs )
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{
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metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
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metaconn_t *mc = NULL;
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int rc = LDAP_OTHER,
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i, gotit = 0, isroot = 0;
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SlapReply *candidates = meta_back_candidates_get( op );
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rs->sr_err = LDAP_SUCCESS;
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Debug( LDAP_DEBUG_ARGS, "meta_back_bind: dn: %s.\n%s%s",
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op->o_req_dn.bv_val, "", "" );
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if ( op->orb_method == LDAP_AUTH_SIMPLE && be_isroot_pw( op ) ) {
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isroot = 1;
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ber_dupbv( &op->orb_edn, be_root_dn( op->o_bd ) );
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}
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/* we need meta_back_getconn() not send result even on error,
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* because we want to intercept the error and make it
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* invalidCredentials */
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mc = meta_back_getconn( op, rs, NULL, LDAP_BACK_DONTSEND );
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if ( !mc ) {
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Debug( LDAP_DEBUG_ANY,
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"meta_back_bind: no target "
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"for dn \"%s\" (%d: %s).\n",
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op->o_req_dn.bv_val, rs->sr_err,
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rs->sr_text ? rs->sr_text : "" );
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/* FIXME: there might be cases where we don't want
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* to map the error onto invalidCredentials */
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switch ( rs->sr_err ) {
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case LDAP_NO_SUCH_OBJECT:
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case LDAP_UNWILLING_TO_PERFORM:
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rs->sr_err = LDAP_INVALID_CREDENTIALS;
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rs->sr_text = NULL;
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break;
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}
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send_ldap_result( op, rs );
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return rs->sr_err;
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}
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/*
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* Each target is scanned ...
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*/
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mc->mc_auth_target = META_BOUND_NONE;
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for ( i = 0; i < mi->mi_ntargets; i++ ) {
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int lerr;
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Operation op2 = *op;
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/*
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* Skip non-candidates
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*/
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if ( candidates[ i ].sr_tag != META_CANDIDATE ) {
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continue;
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}
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if ( gotit == 0 ) {
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gotit = 1;
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} else if ( isroot == 0 ) {
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/*
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* A bind operation is expected to have
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* ONE CANDIDATE ONLY!
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*/
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Debug( LDAP_DEBUG_ANY,
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"==>meta_back_bind: more than one"
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" candidate is trying to bind...\n",
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0, 0, 0 );
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}
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if ( isroot && !BER_BVISNULL( &mi->mi_targets[ i ].mt_pseudorootdn ) )
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{
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op2.o_req_dn = mi->mi_targets[ i ].mt_pseudorootdn;
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op2.o_req_ndn = mi->mi_targets[ i ].mt_pseudorootdn;
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op2.orb_cred = mi->mi_targets[ i ].mt_pseudorootpw;
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op2.orb_method = LDAP_AUTH_SIMPLE;
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}
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lerr = meta_back_single_bind( &op2, rs, mc, i );
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if ( lerr != LDAP_SUCCESS ) {
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rs->sr_err = lerr;
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candidates[ i ].sr_tag = META_NOT_CANDIDATE;
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} else {
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rc = LDAP_SUCCESS;
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}
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}
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if ( isroot ) {
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mc->mc_auth_target = META_BOUND_ALL;
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}
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meta_back_release_conn( op, mc );
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/*
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* rc is LDAP_SUCCESS if at least one bind succeeded,
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* err is the last error that occurred during a bind;
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* if at least (and at most?) one bind succeedes, fine.
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*/
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if ( rc != LDAP_SUCCESS ) {
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/*
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* deal with bind failure ...
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*/
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/*
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* no target was found within the naming context,
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* so bind must fail with invalid credentials
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*/
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if ( rs->sr_err == LDAP_SUCCESS && gotit == 0 ) {
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rs->sr_err = LDAP_INVALID_CREDENTIALS;
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}
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rs->sr_err = slap_map_api2result( rs );
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send_ldap_result( op, rs );
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return rs->sr_err;
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}
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return LDAP_SUCCESS;
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}
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/*
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* meta_back_single_bind
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*
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* attempts to perform a bind with creds
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*/
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static int
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meta_back_single_bind(
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Operation *op,
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SlapReply *rs,
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metaconn_t *mc,
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int candidate )
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{
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metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
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metatarget_t *mt = &mi->mi_targets[ candidate ];
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struct berval mdn = BER_BVNULL;
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dncookie dc;
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metasingleconn_t *msc = &mc->mc_conns[ candidate ];
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int msgid,
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rebinding = 0;
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/*
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* Rewrite the bind dn if needed
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*/
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dc.target = &mi->mi_targets[ candidate ];
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dc.conn = op->o_conn;
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dc.rs = rs;
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dc.ctx = "bindDN";
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if ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
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send_ldap_result( op, rs );
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return -1;
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}
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/* FIXME: this fixes the bind problem right now; we need
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* to use the asynchronous version to get the "matched"
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* and more in case of failure ... */
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/* FIXME: should be check if at least some of the op->o_ctrls
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* can/should be passed? */
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rebind:;
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rs->sr_err = ldap_sasl_bind( msc->msc_ld, mdn.bv_val,
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LDAP_SASL_SIMPLE, &op->orb_cred,
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op->o_ctrls, NULL, &msgid );
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if ( rs->sr_err == LDAP_SUCCESS ) {
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LDAPMessage *res;
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struct timeval tv;
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int rc;
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int nretries = mt->mt_nretries;
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/*
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* handle response!!!
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*/
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retry:;
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tv.tv_sec = 0;
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tv.tv_usec = META_BIND_TIMEOUT;
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switch ( ldap_result( msc->msc_ld, msgid, 0, &tv, &res ) ) {
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case 0:
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Debug( LDAP_DEBUG_ANY,
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"%s meta_back_single_bind: "
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"ldap_result=0 nretries=%d%s\n",
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op->o_log_prefix, nretries,
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rebinding ? " rebinding" : "" );
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if ( nretries != META_RETRY_NEVER ) {
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ldap_pvt_thread_yield();
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if ( nretries > 0 ) {
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nretries--;
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}
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goto retry;
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}
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rs->sr_err = LDAP_BUSY;
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if ( rebinding ) {
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ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
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break;
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}
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/* FIXME: some times the request times out
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* while the other party is not willing to
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* send a response any more. Give it a second
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* chance with a freshly bound connection */
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rebinding = 1;
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nretries = mt->mt_nretries;
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/* fallthru */
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case -1:
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ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER,
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&rs->sr_err );
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if ( rebinding ) {
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ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
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}
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Debug( LDAP_DEBUG_ANY,
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"### %s meta_back_single_bind: "
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"err=%d nretries=%d\n",
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op->o_log_prefix, rs->sr_err, nretries );
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rc = slap_map_api2result( rs );
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if ( rs->sr_err == LDAP_UNAVAILABLE && nretries != META_RETRY_NEVER ) {
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ldap_pvt_thread_mutex_lock( &mi->mi_conn_mutex );
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if ( mc->mc_refcnt == 1 ) {
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ldap_unbind_ext_s( msc->msc_ld, NULL, NULL );
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msc->msc_ld = NULL;
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msc->msc_bound = 0;
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( void )rewrite_session_delete( mt->mt_rwmap.rwm_rw, op->o_conn );
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/* mc here must be the regular mc,
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* reset and ready for init */
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rc = meta_back_init_one_conn( op, rs,
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mt, msc, LDAP_BACK_DONTSEND );
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} else {
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/* can't do anything about it */
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rc = 0;
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}
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ldap_pvt_thread_mutex_unlock( &mi->mi_conn_mutex );
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if ( rc ) {
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if ( nretries > 0 ) {
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nretries--;
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}
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ldap_pvt_thread_yield();
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goto rebind;
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}
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}
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break;
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default:
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rc = ldap_parse_result( msc->msc_ld, res, &rs->sr_err,
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NULL, NULL, NULL, NULL, 1 );
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if ( rc != LDAP_SUCCESS ) {
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rs->sr_err = rc;
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}
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break;
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}
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}
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if ( rs->sr_err != LDAP_SUCCESS ) {
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rs->sr_err = slap_map_api2result( rs );
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goto return_results;
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}
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ber_bvreplace( &msc->msc_bound_ndn, &op->o_req_dn );
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msc->msc_bound = META_BOUND;
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mc->mc_auth_target = candidate;
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if ( LDAP_BACK_SAVECRED( mi ) ) {
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ber_bvreplace( &msc->msc_cred, &op->orb_cred );
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ldap_set_rebind_proc( msc->msc_ld, meta_back_rebind, msc );
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}
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if ( mi->mi_cache.ttl != META_DNCACHE_DISABLED
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&& op->o_req_ndn.bv_len != 0 )
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{
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( void )meta_dncache_update_entry( &mi->mi_cache,
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&op->o_req_ndn, candidate );
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}
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return_results:;
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if ( mdn.bv_val != op->o_req_dn.bv_val ) {
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free( mdn.bv_val );
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}
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return rs->sr_err;
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}
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/*
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* meta_back_single_dobind
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*/
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int
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meta_back_single_dobind(
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Operation *op,
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SlapReply *rs,
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metaconn_t *mc,
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int candidate,
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ldap_back_send_t sendok,
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int nretries,
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int dolock )
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{
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metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
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metatarget_t *mt = &mi->mi_targets[ candidate ];
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metasingleconn_t *msc = &mc->mc_conns[ candidate ];
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int rc;
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struct berval cred = BER_BVC( "" );
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int msgid,
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rebinding = 0,
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save_nretries = nretries;
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/*
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* Otherwise an anonymous bind is performed
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* (note: if the target was already bound, the anonymous
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* bind clears the previous bind).
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*/
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if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
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ber_memfree( msc->msc_bound_ndn.bv_val );
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BER_BVZERO( &msc->msc_bound_ndn );
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}
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if ( !BER_BVISNULL( &msc->msc_cred ) ) {
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/* destroy sensitive data */
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memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
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ber_memfree( msc->msc_cred.bv_val );
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BER_BVZERO( &msc->msc_cred );
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}
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|
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/* FIXME: should we check if at least some of the op->o_ctrls
|
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* can/should be passed? */
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rebind:;
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rc = ldap_sasl_bind( msc->msc_ld, "", LDAP_SASL_SIMPLE, &cred,
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NULL, NULL, &msgid );
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if ( rc == LDAP_SUCCESS ) {
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LDAPMessage *res;
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struct timeval tv;
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|
|
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/*
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* handle response!!!
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*/
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retry:;
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tv.tv_sec = 0;
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tv.tv_usec = META_BIND_TIMEOUT;
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switch ( ldap_result( msc->msc_ld, msgid, 0, &tv, &res ) ) {
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case 0:
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Debug( LDAP_DEBUG_ANY,
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"%s meta_back_single_dobind: "
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"ldap_result=0 nretries=%d%s\n",
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op->o_log_prefix, nretries,
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rebinding ? " rebinding" : "" );
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|
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if ( nretries != META_RETRY_NEVER ) {
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ldap_pvt_thread_yield();
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if ( nretries > 0 ) {
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nretries--;
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}
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goto retry;
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}
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|
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rc = LDAP_BUSY;
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if ( rebinding ) {
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ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
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break;
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}
|
|
|
|
/* FIXME: some times the request times out
|
|
* while the other party is not willing to
|
|
* send a response any more. Give it a second
|
|
* chance with a freshly bound connection */
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rebinding = 1;
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nretries = save_nretries;
|
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/* fallthru */
|
|
|
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case -1:
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ldap_get_option( msc->msc_ld,
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LDAP_OPT_ERROR_NUMBER, &rs->sr_err );
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|
|
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if ( rebinding ) {
|
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ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
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}
|
|
|
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Debug( LDAP_DEBUG_ANY,
|
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"### %s meta_back_single_dobind: "
|
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"err=%d nretries=%d\n",
|
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op->o_log_prefix, rs->sr_err, nretries );
|
|
|
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rc = slap_map_api2result( rs );
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if ( rc == LDAP_UNAVAILABLE && nretries != META_RETRY_NEVER ) {
|
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if ( dolock ) {
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ldap_pvt_thread_mutex_lock( &mi->mi_conn_mutex );
|
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}
|
|
|
|
if ( mc->mc_refcnt == 1 ) {
|
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ldap_unbind_ext_s( msc->msc_ld, NULL, NULL );
|
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msc->msc_ld = NULL;
|
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msc->msc_bound = 0;
|
|
|
|
( void )rewrite_session_delete( mt->mt_rwmap.rwm_rw, op->o_conn );
|
|
|
|
/* mc here must be the regular mc,
|
|
* reset and ready for init */
|
|
rc = meta_back_init_one_conn( op, rs,
|
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mt, msc, LDAP_BACK_DONTSEND );
|
|
|
|
|
|
} else {
|
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/* can't do anything about it */
|
|
rc = LDAP_UNAVAILABLE;
|
|
}
|
|
|
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if ( dolock ) {
|
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ldap_pvt_thread_mutex_unlock( &mi->mi_conn_mutex );
|
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}
|
|
|
|
if ( rc == LDAP_SUCCESS ) {
|
|
ldap_pvt_thread_yield();
|
|
if ( nretries > 0 ) {
|
|
nretries--;
|
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}
|
|
goto rebind;
|
|
}
|
|
}
|
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break;
|
|
|
|
default:
|
|
rc = ldap_parse_result( msc->msc_ld, res, &rs->sr_err,
|
|
NULL, NULL, NULL, NULL, 1 );
|
|
if ( rc == LDAP_SUCCESS ) {
|
|
rc = slap_map_api2result( rs );
|
|
}
|
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break;
|
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}
|
|
|
|
} else {
|
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rc = slap_map_api2result( rs );
|
|
}
|
|
|
|
rs->sr_err = rc;
|
|
if ( rc != LDAP_SUCCESS && ( sendok & LDAP_BACK_SENDERR ) ) {
|
|
send_ldap_result( op, rs );
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* meta_back_dobind
|
|
*/
|
|
int
|
|
meta_back_dobind(
|
|
Operation *op,
|
|
SlapReply *rs,
|
|
metaconn_t *mc,
|
|
ldap_back_send_t sendok )
|
|
{
|
|
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
|
|
|
|
int bound = 0, i;
|
|
|
|
SlapReply *candidates = meta_back_candidates_get( op );
|
|
|
|
ldap_pvt_thread_mutex_lock( &mc->mc_mutex );
|
|
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"%s meta_back_dobind: conn=%ld\n",
|
|
op->o_log_prefix, mc->mc_conn->c_connid, 0 );
|
|
|
|
/*
|
|
* all the targets are bound as pseudoroot
|
|
*/
|
|
if ( mc->mc_auth_target == META_BOUND_ALL ) {
|
|
bound = 1;
|
|
goto done;
|
|
}
|
|
|
|
for ( i = 0; i < mi->mi_ntargets; i++ ) {
|
|
metatarget_t *mt = &mi->mi_targets[ i ];
|
|
metasingleconn_t *msc = &mc->mc_conns[ i ];
|
|
int rc;
|
|
|
|
/*
|
|
* Not a candidate
|
|
*/
|
|
if ( candidates[ i ].sr_tag != META_CANDIDATE ) {
|
|
continue;
|
|
}
|
|
|
|
assert( msc->msc_ld != NULL );
|
|
|
|
/*
|
|
* If the target is already bound it is skipped
|
|
*/
|
|
if ( msc->msc_bound == META_BOUND && mc->mc_auth_target == i ) {
|
|
++bound;
|
|
|
|
Debug( LDAP_DEBUG_TRACE, "%s meta_back_dobind[%d]: "
|
|
"authcTarget\n",
|
|
op->o_log_prefix, i, 0 );
|
|
continue;
|
|
}
|
|
|
|
rc = meta_back_single_dobind( op, rs, mc, i,
|
|
LDAP_BACK_DONTSEND, mt->mt_nretries, 1 );
|
|
if ( rc != LDAP_SUCCESS ) {
|
|
rs->sr_err = slap_map_api2result( rs );
|
|
|
|
Debug( LDAP_DEBUG_ANY, "%s meta_back_dobind[%d]: "
|
|
"(anonymous) err=%d\n",
|
|
op->o_log_prefix, i, rc );
|
|
|
|
/*
|
|
* null cred bind should always succeed
|
|
* as anonymous, so a failure means
|
|
* the target is no longer candidate possibly
|
|
* due to technical reasons (remote host down?)
|
|
* so better clear the handle
|
|
*/
|
|
candidates[ i ].sr_tag = META_NOT_CANDIDATE;
|
|
continue;
|
|
} /* else */
|
|
|
|
Debug( LDAP_DEBUG_TRACE, "%s meta_back_dobind[%d]: "
|
|
"(anonymous)\n",
|
|
op->o_log_prefix, i, 0 );
|
|
|
|
msc->msc_bound = META_ANONYMOUS;
|
|
++bound;
|
|
}
|
|
|
|
done:;
|
|
ldap_pvt_thread_mutex_unlock( &mc->mc_mutex );
|
|
|
|
Debug( LDAP_DEBUG_TRACE,
|
|
"%s meta_back_dobind: conn=%ld bound=%d\n",
|
|
op->o_log_prefix, mc->mc_conn->c_connid, bound );
|
|
|
|
if ( bound == 0 ) {
|
|
meta_back_release_conn( op, mc );
|
|
|
|
if ( sendok & LDAP_BACK_SENDERR ) {
|
|
if ( rs->sr_err == LDAP_SUCCESS ) {
|
|
rs->sr_err = LDAP_BUSY;
|
|
}
|
|
send_ldap_result( op, rs );
|
|
}
|
|
}
|
|
|
|
return( bound > 0 );
|
|
}
|
|
|
|
/*
|
|
* meta_back_rebind
|
|
*
|
|
* This is a callback used for chasing referrals using the same
|
|
* credentials as the original user on this session.
|
|
*/
|
|
static int
|
|
meta_back_rebind(
|
|
LDAP *ld,
|
|
LDAP_CONST char *url,
|
|
ber_tag_t request,
|
|
ber_int_t msgid,
|
|
void *params )
|
|
{
|
|
metasingleconn_t *msc = ( metasingleconn_t * )params;
|
|
|
|
return ldap_sasl_bind_s( ld, msc->msc_bound_ndn.bv_val,
|
|
LDAP_SASL_SIMPLE, &msc->msc_cred,
|
|
NULL, NULL, NULL );
|
|
}
|
|
|
|
/*
|
|
* FIXME: error return must be handled in a cleaner way ...
|
|
*/
|
|
int
|
|
meta_back_op_result(
|
|
metaconn_t *mc,
|
|
Operation *op,
|
|
SlapReply *rs,
|
|
int candidate )
|
|
{
|
|
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
|
|
|
|
int i,
|
|
rerr = LDAP_SUCCESS;
|
|
char *rmsg = NULL;
|
|
char *rmatch = NULL;
|
|
int free_rmsg = 0,
|
|
free_rmatch = 0;
|
|
|
|
if ( candidate != META_TARGET_NONE ) {
|
|
metasingleconn_t *msc = &mc->mc_conns[ candidate ];
|
|
|
|
rs->sr_err = LDAP_SUCCESS;
|
|
|
|
ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER, &rs->sr_err );
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
/*
|
|
* better check the type of error. In some cases
|
|
* (search ?) it might be better to return a
|
|
* success if at least one of the targets gave
|
|
* positive result ...
|
|
*/
|
|
ldap_get_option( msc->msc_ld,
|
|
LDAP_OPT_ERROR_STRING, &rmsg );
|
|
ldap_get_option( msc->msc_ld,
|
|
LDAP_OPT_MATCHED_DN, &rmatch );
|
|
rerr = rs->sr_err = slap_map_api2result( rs );
|
|
|
|
if ( rmsg ) {
|
|
free_rmsg = 1;
|
|
}
|
|
if ( rmatch ) {
|
|
free_rmatch = 1;
|
|
}
|
|
|
|
Debug(LDAP_DEBUG_ANY,
|
|
"==> meta_back_op_result: target"
|
|
" <%d> sending msg \"%s\""
|
|
" (matched \"%s\")\n",
|
|
candidate, ( rmsg ? rmsg : "" ),
|
|
( rmatch ? rmatch : "" ) );
|
|
}
|
|
|
|
} else {
|
|
for ( i = 0; i < mi->mi_ntargets; i++ ) {
|
|
metasingleconn_t *msc = &mc->mc_conns[ i ];
|
|
char *msg = NULL;
|
|
char *match = NULL;
|
|
|
|
rs->sr_err = LDAP_SUCCESS;
|
|
|
|
ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER, &rs->sr_err );
|
|
if ( rs->sr_err != LDAP_SUCCESS ) {
|
|
/*
|
|
* better check the type of error. In some cases
|
|
* (search ?) it might be better to return a
|
|
* success if at least one of the targets gave
|
|
* positive result ...
|
|
*/
|
|
ldap_get_option( msc->msc_ld,
|
|
LDAP_OPT_ERROR_STRING, &msg );
|
|
ldap_get_option( msc->msc_ld,
|
|
LDAP_OPT_MATCHED_DN, &match );
|
|
rs->sr_err = slap_map_api2result( rs );
|
|
|
|
Debug(LDAP_DEBUG_ANY,
|
|
"==> meta_back_op_result: target"
|
|
" <%d> sending msg \"%s\""
|
|
" (matched \"%s\")\n",
|
|
i, ( msg ? msg : "" ),
|
|
( match ? match : "" ) );
|
|
|
|
/*
|
|
* FIXME: need to rewrite "match" (need rwinfo)
|
|
*/
|
|
switch ( rs->sr_err ) {
|
|
default:
|
|
rerr = rs->sr_err;
|
|
if ( rmsg ) {
|
|
ber_memfree( rmsg );
|
|
}
|
|
rmsg = msg;
|
|
free_rmsg = 1;
|
|
msg = NULL;
|
|
if ( rmatch ) {
|
|
ber_memfree( rmatch );
|
|
}
|
|
rmatch = match;
|
|
free_rmatch = 1;
|
|
match = NULL;
|
|
break;
|
|
}
|
|
|
|
/* better test the pointers before freeing? */
|
|
if ( match ) {
|
|
free( match );
|
|
}
|
|
if ( msg ) {
|
|
free( msg );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
rs->sr_err = rerr;
|
|
rs->sr_text = rmsg;
|
|
rs->sr_matched = rmatch;
|
|
send_ldap_result( op, rs );
|
|
if ( free_rmsg ) {
|
|
ber_memfree( rmsg );
|
|
}
|
|
if ( free_rmatch ) {
|
|
ber_memfree( rmatch );
|
|
}
|
|
rs->sr_text = NULL;
|
|
rs->sr_matched = NULL;
|
|
|
|
return ( ( rerr == LDAP_SUCCESS ) ? 0 : -1 );
|
|
}
|
|
|