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53175f7ba6
openldap/servers/slapd/back-meta/bind.c
Pierangelo Masarati 53175f7ba6 more concurrency cleanup
2006-06-07 21:54:37 +00:00

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/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1999-2006 The OpenLDAP Foundation.
* Portions Copyright 2001-2003 Pierangelo Masarati.
* Portions Copyright 1999-2003 Howard Chu.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* ACKNOWLEDGEMENTS:
* This work was initially developed by the Howard Chu for inclusion
* in OpenLDAP Software and subsequently enhanced by Pierangelo
* Masarati.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/errno.h>
#include <ac/socket.h>
#include <ac/string.h>
#define AVL_INTERNAL
#include "slap.h"
#include "../back-ldap/back-ldap.h"
#include "back-meta.h"
int
meta_back_bind( Operation *op, SlapReply *rs )
{
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
metaconn_t *mc = NULL;
int rc = LDAP_OTHER,
i,
gotit = 0,
isroot = 0;
SlapReply *candidates = meta_back_candidates_get( op );
rs->sr_err = LDAP_SUCCESS;
Debug( LDAP_DEBUG_ARGS, "%s meta_back_bind: dn=\"%s\".\n",
op->o_log_prefix, op->o_req_dn.bv_val, 0 );
/* the test on the bind method should be superfluous */
if ( op->orb_method == LDAP_AUTH_SIMPLE
&& be_isroot_dn( op->o_bd, &op->o_req_ndn ) )
{
if ( !be_isroot_pw( op ) ) {
rs->sr_err = LDAP_INVALID_CREDENTIALS;
rs->sr_text = NULL;
send_ldap_result( op, rs );
return rs->sr_err;
}
if ( META_BACK_DEFER_ROOTDN_BIND( mi ) ) {
rs->sr_err = LDAP_SUCCESS;
rs->sr_text = NULL;
/* frontend will return success */
return rs->sr_err;
}
isroot = 1;
}
/* we need meta_back_getconn() not send result even on error,
* because we want to intercept the error and make it
* invalidCredentials */
mc = meta_back_getconn( op, rs, NULL, LDAP_BACK_BIND_DONTSEND );
if ( !mc ) {
char buf[ SLAP_TEXT_BUFLEN ];
snprintf( buf, sizeof( buf ),
"meta_back_bind: no target "
"for dn \"%s\" (%d%s%s).",
op->o_req_dn.bv_val, rs->sr_err,
rs->sr_text ? ". " : "",
rs->sr_text ? rs->sr_text : "" );
Debug( LDAP_DEBUG_ANY,
"%s %s\n",
op->o_log_prefix, buf, 0 );
/* FIXME: there might be cases where we don't want
* to map the error onto invalidCredentials */
switch ( rs->sr_err ) {
case LDAP_NO_SUCH_OBJECT:
case LDAP_UNWILLING_TO_PERFORM:
rs->sr_err = LDAP_INVALID_CREDENTIALS;
rs->sr_text = NULL;
break;
}
send_ldap_result( op, rs );
return rs->sr_err;
}
/*
* Each target is scanned ...
*/
mc->mc_authz_target = META_BOUND_NONE;
for ( i = 0; i < mi->mi_ntargets; i++ ) {
metatarget_t *mt = mi->mi_targets[ i ];
int lerr;
Operation op2 = *op;
int massage = 1;
/*
* Skip non-candidates
*/
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
if ( gotit == 0 ) {
/* set rc to LDAP_SUCCESS only if at least
* one candidate has been tried */
rc = LDAP_SUCCESS;
gotit = 1;
} else if ( isroot == 0 ) {
/*
* A bind operation is expected to have
* ONE CANDIDATE ONLY!
*/
Debug( LDAP_DEBUG_ANY,
"### %s meta_back_bind: more than one"
" candidate selected...\n",
op->o_log_prefix, 0, 0 );
}
if ( isroot ) {
if ( BER_BVISNULL( &mt->mt_pseudorootdn ) )
{
metasingleconn_t *msc = &mc->mc_conns[ i ];
/* skip the target if no pseudorootdn is provided */
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
BER_BVZERO( &msc->msc_bound_ndn );
}
if ( LDAP_BACK_SAVECRED( mi ) &&
!BER_BVISNULL( &msc->msc_cred ) )
{
/* destroy sensitive data */
memset( msc->msc_cred.bv_val, 0,
msc->msc_cred.bv_len );
ch_free( msc->msc_cred.bv_val );
BER_BVZERO( &msc->msc_cred );
}
continue;
}
op2.o_req_dn = mt->mt_pseudorootdn;
op2.o_req_ndn = mt->mt_pseudorootdn;
op2.orb_cred = mt->mt_pseudorootpw;
op2.orb_method = LDAP_AUTH_SIMPLE;
massage = 0;
}
lerr = meta_back_single_bind( &op2, rs, mc, i, massage );
if ( lerr != LDAP_SUCCESS ) {
rc = rs->sr_err = lerr;
/* FIXME: in some cases (e.g. unavailable)
* do not assume it's not candidate; rather
* mark this as an error to be eventually
* reported to client */
META_CANDIDATE_CLEAR( &candidates[ i ] );
break;
}
}
/* must re-insert if local DN changed as result of bind */
if ( rc == LDAP_SUCCESS ) {
if ( isroot ) {
mc->mc_authz_target = META_BOUND_ALL;
ber_dupbv( &op->orb_edn, be_root_dn( op->o_bd ) );
}
if ( !dn_match( &op->o_req_ndn, &mc->mc_local_ndn ) ) {
metaconn_t *tmpmc;
int lerr;
/* wait for all other ops to release the connection */
retry_lock:;
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
if ( mc->mc_refcnt > 1 ) {
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
ldap_pvt_thread_yield();
goto retry_lock;
}
assert( mc->mc_refcnt == 1 );
tmpmc = avl_delete( &mi->mi_conninfo.lai_tree, (caddr_t)mc,
meta_back_conndn_cmp );
assert( tmpmc == mc );
/* delete all cached connections with the current connection */
if ( LDAP_BACK_SINGLECONN( mi ) ) {
while ( ( tmpmc = avl_delete( &mi->mi_conninfo.lai_tree, (caddr_t)mc, meta_back_conn_cmp ) ) != NULL )
{
Debug( LDAP_DEBUG_TRACE,
"=>meta_back_bind: destroying conn %ld (refcnt=%u)\n",
LDAP_BACK_PCONN_ID( mc->mc_conn ), mc->mc_refcnt, 0 );
if ( mc->mc_refcnt != 0 ) {
/* taint it */
LDAP_BACK_CONN_TAINTED_SET( tmpmc );
} else {
/*
* Needs a test because the handler may be corrupted,
* and calling ldap_unbind on a corrupted header results
* in a segmentation fault
*/
meta_back_conn_free( tmpmc );
}
}
}
ber_bvreplace( &mc->mc_local_ndn, &op->o_req_ndn );
if ( be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
mc->mc_conn = LDAP_BACK_PCONN_SET( op );
}
lerr = avl_insert( &mi->mi_conninfo.lai_tree, (caddr_t)mc,
meta_back_conndn_cmp, meta_back_conndn_dup );
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
if ( lerr == -1 ) {
meta_clear_candidates( op, mc );
/* we can do this because mc_refcnt == 1 */
mc->mc_refcnt = 0;
meta_back_conn_free( mc );
mc = NULL;
}
}
}
if ( mc != NULL ) {
meta_back_release_conn( op, mc );
}
/*
* rc is LDAP_SUCCESS if at least one bind succeeded,
* err is the last error that occurred during a bind;
* if at least (and at most?) one bind succeeds, fine.
*/
if ( rc != LDAP_SUCCESS ) {
/*
* deal with bind failure ...
*/
/*
* no target was found within the naming context,
* so bind must fail with invalid credentials
*/
if ( rs->sr_err == LDAP_SUCCESS && gotit == 0 ) {
rs->sr_err = LDAP_INVALID_CREDENTIALS;
} else {
rs->sr_err = slap_map_api2result( rs );
}
send_ldap_result( op, rs );
return rs->sr_err;
}
return LDAP_SUCCESS;
}
/*
* meta_back_single_bind
*
* attempts to perform a bind with creds
*/
int
meta_back_single_bind(
Operation *op,
SlapReply *rs,
metaconn_t *mc,
int candidate,
int massage )
{
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
metatarget_t *mt = mi->mi_targets[ candidate ];
struct berval mdn = BER_BVNULL;
metasingleconn_t *msc = &mc->mc_conns[ candidate ];
int msgid,
rebinding = 0;
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
BER_BVZERO( &msc->msc_bound_ndn );
}
if ( LDAP_BACK_SAVECRED( mi ) && !BER_BVISNULL( &msc->msc_cred ) ) {
/* destroy sensitive data */
memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
ch_free( msc->msc_cred.bv_val );
BER_BVZERO( &msc->msc_cred );
}
/*
* Rewrite the bind dn if needed
*/
if ( massage ) {
dncookie dc;
dc.target = mt;
dc.conn = op->o_conn;
dc.rs = rs;
dc.ctx = "bindDN";
if ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) {
rs->sr_text = "DN rewrite error";
rs->sr_err = LDAP_OTHER;
return rs->sr_err;
}
} else {
mdn = op->o_req_dn;
}
/* FIXME: this fixes the bind problem right now; we need
* to use the asynchronous version to get the "matched"
* and more in case of failure ... */
/* FIXME: should we check if at least some of the op->o_ctrls
* can/should be passed? */
rebind:;
rs->sr_err = ldap_sasl_bind( msc->msc_ld, mdn.bv_val,
LDAP_SASL_SIMPLE, &op->orb_cred,
op->o_ctrls, NULL, &msgid );
if ( rs->sr_err == LDAP_SUCCESS ) {
LDAPMessage *res;
struct timeval tv;
int rc;
int nretries = mt->mt_nretries;
char buf[ SLAP_TEXT_BUFLEN ];
LDAP_BACK_TV_SET( &tv );
/*
* handle response!!!
*/
retry:;
switch ( ldap_result( msc->msc_ld, msgid, LDAP_MSG_ALL, &tv, &res ) ) {
case 0:
snprintf( buf, sizeof( buf ),
"ldap_result=0 nretries=%d%s",
nretries, rebinding ? " rebinding" : "" );
Debug( LDAP_DEBUG_ANY,
"%s meta_back_single_bind[%d]: %s.\n",
op->o_log_prefix, candidate, buf );
if ( nretries != META_RETRY_NEVER ) {
ldap_pvt_thread_yield();
if ( nretries > 0 ) {
nretries--;
}
tv = mt->mt_bind_timeout;
goto retry;
}
rs->sr_err = LDAP_BUSY;
if ( rebinding ) {
(void)meta_back_cancel( mc, op, rs, msgid, candidate, LDAP_BACK_DONTSEND );
break;
}
/* 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 */
rebinding = 1;
nretries = mt->mt_nretries;
/* fallthru */
case -1:
ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER,
&rs->sr_err );
if ( rebinding ) {
(void)meta_back_cancel( mc, op, rs, msgid, candidate, LDAP_BACK_DONTSEND );
}
snprintf( buf, sizeof( buf ),
"err=%d (%s) nretries=%d",
rs->sr_err, ldap_err2string( rs->sr_err ), nretries );
Debug( LDAP_DEBUG_ANY,
"### %s meta_back_single_bind[%d]: %s.\n",
op->o_log_prefix, candidate, buf );
rc = slap_map_api2result( rs );
if ( rs->sr_err == LDAP_UNAVAILABLE && nretries != META_RETRY_NEVER ) {
rc = meta_back_retry( op, rs, &mc, candidate, LDAP_BACK_DONTSEND );
if ( rc ) {
if ( nretries > 0 ) {
nretries--;
}
ldap_pvt_thread_yield();
goto rebind;
}
goto return_results;
}
break;
default:
rc = ldap_parse_result( msc->msc_ld, res, &rs->sr_err,
NULL, NULL, NULL, NULL, 1 );
if ( rc != LDAP_SUCCESS ) {
rs->sr_err = rc;
}
break;
}
}
if ( rs->sr_err != LDAP_SUCCESS ) {
rs->sr_err = slap_map_api2result( rs );
goto return_results;
}
ber_bvreplace( &msc->msc_bound_ndn, &op->o_req_dn );
LDAP_BACK_CONN_ISBOUND_SET( msc );
mc->mc_authz_target = candidate;
if ( LDAP_BACK_SAVECRED( mi ) ) {
ber_bvreplace( &msc->msc_cred, &op->orb_cred );
ldap_set_rebind_proc( msc->msc_ld, mt->mt_rebind_f, msc );
}
if ( mi->mi_cache.ttl != META_DNCACHE_DISABLED
&& !BER_BVISEMPTY( &op->o_req_ndn ) )
{
( void )meta_dncache_update_entry( &mi->mi_cache,
&op->o_req_ndn, candidate );
}
return_results:;
if ( mdn.bv_val != op->o_req_dn.bv_val ) {
free( mdn.bv_val );
}
if ( META_BACK_QUARANTINE( mi ) ) {
meta_back_quarantine( op, rs, candidate, 1 );
}
return rs->sr_err;
}
/*
* meta_back_single_dobind
*/
int
meta_back_single_dobind(
Operation *op,
SlapReply *rs,
metaconn_t **mcp,
int candidate,
ldap_back_send_t sendok,
int nretries,
int dolock )
{
metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private;
metatarget_t *mt = mi->mi_targets[ candidate ];
metaconn_t *mc = *mcp;
metasingleconn_t *msc = &mc->mc_conns[ candidate ];
int rc;
static struct berval cred = BER_BVC( "" );
int msgid,
rebinding = 0,
save_nretries = nretries;
assert( !LDAP_BACK_CONN_ISBOUND( msc ) );
/*
* meta_back_single_dobind() calls meta_back_single_bind()
* if required.
*/
if ( be_isroot( op ) && !BER_BVISNULL( &mt->mt_pseudorootdn ) )
{
Operation op2 = *op;
op2.o_tag = LDAP_REQ_BIND;
op2.o_req_dn = mt->mt_pseudorootdn;
op2.o_req_ndn = mt->mt_pseudorootdn;
op2.orb_cred = mt->mt_pseudorootpw;
op2.orb_method = LDAP_AUTH_SIMPLE;
rc = meta_back_single_bind( &op2, rs, *mcp, candidate, 0 );
goto done;
}
/*
* Otherwise an anonymous bind is performed
* (note: if the target was already bound, the anonymous
* bind clears the previous bind).
*/
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ber_memfree( msc->msc_bound_ndn.bv_val );
BER_BVZERO( &msc->msc_bound_ndn );
}
if ( LDAP_BACK_SAVECRED( mi ) && !BER_BVISNULL( &msc->msc_cred ) ) {
/* destroy sensitive data */
memset( msc->msc_cred.bv_val, 0, msc->msc_cred.bv_len );
ber_memfree( msc->msc_cred.bv_val );
BER_BVZERO( &msc->msc_cred );
}
/* FIXME: should we check if at least some of the op->o_ctrls
* can/should be passed? */
rebind:;
rc = ldap_sasl_bind( msc->msc_ld, "", LDAP_SASL_SIMPLE, &cred,
NULL, NULL, &msgid );
if ( rc == LDAP_SUCCESS ) {
LDAPMessage *res;
struct timeval tv;
char buf[ SLAP_TEXT_BUFLEN ];
LDAP_BACK_TV_SET( &tv );
/*
* handle response!!!
*/
retry:;
switch ( ldap_result( msc->msc_ld, msgid, LDAP_MSG_ALL, &tv, &res ) ) {
case 0:
snprintf( buf, sizeof( buf ),
"ldap_result=0 nretries=%d%s",
nretries, rebinding ? " rebinding" : "" );
Debug( LDAP_DEBUG_ANY,
"%s meta_back_single_dobind[%d]: %s.\n",
op->o_log_prefix, candidate, buf );
if ( nretries != META_RETRY_NEVER ) {
ldap_pvt_thread_yield();
if ( nretries > 0 ) {
nretries--;
}
tv = mt->mt_bind_timeout;
goto retry;
}
rc = LDAP_BUSY;
if ( rebinding ) {
(void)meta_back_cancel( mc, op, rs, msgid, candidate, LDAP_BACK_DONTSEND );
break;
}
/* 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 */
rebinding = 1;
nretries = save_nretries;
/* fallthru */
case -1:
ldap_get_option( msc->msc_ld, LDAP_OPT_ERROR_NUMBER,
&rs->sr_err );
if ( rebinding ) {
(void)meta_back_cancel( mc, op, rs, msgid, candidate, LDAP_BACK_DONTSEND );
}
snprintf( buf, sizeof( buf ),
"err=%d (%s) nretries=%d",
rs->sr_err, ldap_err2string( rs->sr_err ), nretries );
Debug( LDAP_DEBUG_ANY,
"### %s meta_back_single_dobind[%d]: %s.\n",
op->o_log_prefix, candidate, buf );
rc = slap_map_api2result( rs );
if ( rc == LDAP_UNAVAILABLE && nretries != META_RETRY_NEVER ) {
if ( dolock ) {
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
}
if ( mc->mc_refcnt == 1 ) {
meta_clear_one_candidate( msc );
LDAP_BACK_CONN_ISBOUND_CLEAR( msc );
( 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,
mc, candidate,
LDAP_BACK_CONN_ISPRIV( mc ),
LDAP_BACK_DONTSEND );
if ( rc == LDAP_SUCCESS ) {
LDAP_BACK_CONN_BINDING_SET( msc );
}
} else {
/* can't do anything about it */
rc = LDAP_UNAVAILABLE;
}
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
if ( rc == LDAP_SUCCESS ) {
ldap_pvt_thread_yield();
if ( nretries > 0 ) {
nretries--;
}
goto rebind;
}
}
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 );
}
break;
}
} else {
rs->sr_err = rc;
rc = slap_map_api2result( rs );
}
done:;
rs->sr_err = rc;
if ( rc != LDAP_SUCCESS ) {
if ( dolock ) {
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
}
LDAP_BACK_CONN_BINDING_CLEAR( msc );
if ( META_BACK_ONERR_STOP( mi ) ) {
LDAP_BACK_CONN_TAINTED_SET( mc );
meta_back_release_conn_lock( op, mc, 0 );
*mcp = NULL;
}
if ( dolock ) {
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
if ( META_BACK_ONERR_STOP( mi ) && ( sendok & LDAP_BACK_SENDERR ) ) {
send_ldap_result( op, rs );
}
}
if ( META_BACK_QUARANTINE( mi ) ) {
meta_back_quarantine( op, rs, candidate, dolock );
}
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,
isroot = 0;
SlapReply *candidates = meta_back_candidates_get( op );
if ( be_isroot( op ) ) {
isroot = 1;
}
Debug( LDAP_DEBUG_TRACE,
"%s meta_back_dobind: conn=%ld%s\n",
op->o_log_prefix,
LDAP_BACK_PCONN_ID( mc->mc_conn ),
isroot ? " (isroot)" : "" );
/*
* all the targets are bound as pseudoroot
*/
if ( mc->mc_authz_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, do_retry = 1;
/*
* Not a candidate
*/
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
assert( msc->msc_ld != NULL );
/*
* If the target is already bound it is skipped
*/
retry_binding:;
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
if ( LDAP_BACK_CONN_ISBOUND( msc ) || LDAP_BACK_CONN_ISANON( msc ) ) {
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
++bound;
continue;
} else if ( LDAP_BACK_CONN_BINDING( msc ) ) {
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
ldap_pvt_thread_yield();
goto retry_binding;
}
LDAP_BACK_CONN_BINDING_SET( msc );
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
retry:;
rc = meta_back_single_dobind( op, rs, &mc, i,
LDAP_BACK_DONTSEND, mt->mt_nretries, 1 );
/*
* NOTE: meta_back_single_dobind() already retries;
* in case of failure, it resets mc...
*/
if ( rc != LDAP_SUCCESS ) {
char buf[ SLAP_TEXT_BUFLEN ];
if ( mc == NULL ) {
/* meta_back_single_dobind() already sent
* response and released connection */
goto send_err;
}
if ( rc == LDAP_UNAVAILABLE && do_retry ) {
do_retry = 0;
if ( meta_back_retry( op, rs, &mc, i, sendok ) ) {
goto retry;
}
if ( mc != NULL ) {
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
LDAP_BACK_CONN_BINDING_CLEAR( msc );
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
return 0;
}
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
LDAP_BACK_CONN_BINDING_CLEAR( msc );
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
snprintf( buf, sizeof( buf ),
"meta_back_dobind[%d]: (%s) err=%d (%s).",
i, isroot ? op->o_bd->be_rootdn.bv_val : "anonymous",
rc, ldap_err2string( rc ) );
Debug( LDAP_DEBUG_ANY,
"%s %s\n",
op->o_log_prefix, buf, 0 );
/*
* 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
*/
/* leave the target candidate, but record the error for later use */
candidates[ i ].sr_err = rc;
if ( META_BACK_ONERR_STOP( mi ) ) {
bound = 0;
goto done;
}
continue;
} /* else */
Debug( LDAP_DEBUG_TRACE,
"%s meta_back_dobind[%d]: "
"(%s)\n",
op->o_log_prefix, i,
isroot ? op->o_bd->be_rootdn.bv_val : "anonymous" );
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
LDAP_BACK_CONN_BINDING_CLEAR( msc );
if ( isroot ) {
LDAP_BACK_CONN_ISBOUND_SET( msc );
} else {
LDAP_BACK_CONN_ISANON_SET( msc );
}
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
++bound;
}
done:;
Debug( LDAP_DEBUG_TRACE,
"%s meta_back_dobind: conn=%ld bound=%d\n",
op->o_log_prefix, LDAP_BACK_PCONN_ID( mc->mc_conn ), bound );
if ( bound == 0 ) {
meta_back_release_conn( op, mc );
send_err:;
if ( sendok & LDAP_BACK_SENDERR ) {
if ( rs->sr_err == LDAP_SUCCESS ) {
rs->sr_err = LDAP_BUSY;
}
send_ldap_result( op, rs );
}
return 0;
}
return ( bound > 0 );
}
/*
* meta_back_default_rebind
*
* This is a callback used for chasing referrals using the same
* credentials as the original user on this session.
*/
int
meta_back_default_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 );
}
/*
* meta_back_default_urllist
*
* This is a callback used for mucking with the urllist
*/
int
meta_back_default_urllist(
LDAP *ld,
LDAPURLDesc **urllist,
LDAPURLDesc **url,
void *params )
{
metatarget_t *mt = (metatarget_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( &mt->mt_uri_mutex );
if ( mt->mt_uri ) {
ch_free( mt->mt_uri );
}
ldap_get_option( ld, LDAP_OPT_URI, (void *)&mt->mt_uri );
ldap_pvt_thread_mutex_unlock( &mt->mt_uri_mutex );
return LDAP_SUCCESS;
}
int
meta_back_cancel(
metaconn_t *mc,
Operation *op,
SlapReply *rs,
ber_int_t msgid,
int candidate,
ldap_back_send_t sendok )
{
metainfo_t *mi = (metainfo_t *)op->o_bd->be_private;
metatarget_t *mt = mi->mi_targets[ candidate ];
metasingleconn_t *msc = &mc->mc_conns[ candidate ];
/* default behavior */
if ( META_BACK_TGT_ABANDON( mt ) ) {
return ldap_abandon_ext( msc->msc_ld, msgid, NULL, NULL );
}
if ( META_BACK_TGT_IGNORE( mt ) ) {
return LDAP_SUCCESS;
}
if ( META_BACK_TGT_CANCEL( mt ) ) {
/* FIXME: asynchronous? */
return ldap_cancel_s( msc->msc_ld, msgid, NULL, NULL );
}
assert( 0 );
return LDAP_OTHER;
}
/*
* 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,
*rmatch = NULL;
const char *save_rmsg = NULL,
*save_rmatch = NULL;
void *rmatch_ctx = NULL;
assert( mc != NULL );
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 );
if ( rmsg != NULL && rmsg[ 0 ] == '\0' ) {
ldap_memfree( rmsg );
rmsg = NULL;
}
ldap_get_option( msc->msc_ld,
LDAP_OPT_MATCHED_DN, &rmatch );
if ( rmatch != NULL && rmatch[ 0 ] == '\0' ) {
ldap_memfree( rmatch );
rmatch = NULL;
}
rerr = rs->sr_err = slap_map_api2result( rs );
Debug(LDAP_DEBUG_ANY,
"==> meta_back_op_result: target"
" <%d> sending msg \"%s\""
" (matched \"%s\")\n",
candidate, ( rmsg ? rmsg : "" ),
( rmatch ? rmatch : "" ) );
}
if ( META_BACK_QUARANTINE( mi ) ) {
meta_back_quarantine( op, rs, candidate, 1 );
}
} 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 );
if ( msg != NULL && msg[ 0 ] == '\0' ) {
ldap_memfree( msg );
msg = NULL;
}
ldap_get_option( msc->msc_ld,
LDAP_OPT_MATCHED_DN, &match );
if ( match != NULL && match[ 0 ] == '\0' ) {
ldap_memfree( match );
match = NULL;
}
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 ( msg != NULL ) {
if ( rmsg ) {
ldap_memfree( rmsg );
}
rmsg = msg;
msg = NULL;
}
if ( match != NULL ) {
if ( rmatch ) {
ldap_memfree( rmatch );
}
rmatch = match;
match = NULL;
}
break;
}
if ( msg ) {
ldap_memfree( msg );
}
if ( match ) {
ldap_memfree( match );
}
}
if ( META_BACK_QUARANTINE( mi ) ) {
meta_back_quarantine( op, rs, i, 1 );
}
}
}
rs->sr_err = rerr;
if ( rmsg != NULL ) {
save_rmsg = rs->sr_text;
rs->sr_text = rmsg;
}
if ( rmatch != NULL ) {
struct berval dn, pdn;
ber_str2bv( rmatch, 0, 0, &dn );
if ( dnPretty( NULL, &dn, &pdn, op->o_tmpmemctx ) == LDAP_SUCCESS ) {
ldap_memfree( rmatch );
rmatch_ctx = op->o_tmpmemctx;
rmatch = pdn.bv_val;
}
save_rmatch = rs->sr_matched;
rs->sr_matched = rmatch;
}
send_ldap_result( op, rs );
if ( rmsg != NULL ) {
ber_memfree( rmsg );
rs->sr_text = save_rmsg;
}
if ( rmatch != NULL ) {
ber_memfree_x( rmatch, rmatch_ctx );
rs->sr_matched = save_rmatch;
}
return ( ( rerr == LDAP_SUCCESS ) ? 0 : -1 );
}
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