int
asyncmeta_back_bind( Operation *op, SlapReply *rs )
{
a_metainfo_t *mi = ( a_metainfo_t * )op->o_bd->be_private;
a_metaconn_t *mc = NULL;
int rc = LDAP_OTHER,
i,
gotit = 0,
isroot = 0;
SlapReply *candidates;
candidates = op->o_tmpcalloc(mi->mi_ntargets, sizeof(SlapReply),op->o_tmpmemctx);
rs->sr_err = LDAP_SUCCESS;
Debug( LDAP_DEBUG_ARGS, "%s asyncmeta_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 */
switch ( be_rootdn_bind( op, rs ) ) {
case LDAP_SUCCESS:
if ( META_BACK_DEFER_ROOTDN_BIND( mi ) ) {
/* frontend will return success */
return rs->sr_err;
}
isroot = 1;
/* fallthru */
case SLAP_CB_CONTINUE:
break;
default:
/* be_rootdn_bind() sent result */
return rs->sr_err;
}
/* we need asyncmeta_getconn() not send result even on error,
* because we want to intercept the error and make it
* invalidCredentials */
mc = asyncmeta_getconn( op, rs, candidates, NULL, LDAP_BACK_BIND_DONTSEND, 1 );
if ( !mc ) {
if ( LogTest( LDAP_DEBUG_ANY ) ) {
char buf[ SLAP_TEXT_BUFLEN ];
snprintf( buf, sizeof( buf ),
"asyncmeta_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++ ) {
a_metatarget_t *mt = mi->mi_targets[ i ];
int lerr;
/*
* 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 ) {
/*
* A bind operation is expected to have
* ONE CANDIDATE ONLY!
*/
Debug( LDAP_DEBUG_ANY,
"### %s asyncmeta_back_bind: more than one"
" candidate selected...\n",
op->o_log_prefix, 0, 0 );
}
if ( isroot ) {
if ( mt->mt_idassert_authmethod == LDAP_AUTH_NONE
|| BER_BVISNULL( &mt->mt_idassert_authcDN ) )
{
a_metasingleconn_t *msc = &mc->mc_conns[ i ];
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
BER_BVZERO( &msc->msc_bound_ndn );
}
if ( !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;
}
(void)asyncmeta_proxy_authz_bind( mc, i, op, rs, LDAP_BACK_DONTSEND, 1 );
lerr = rs->sr_err;
} else {
lerr = asyncmeta_single_bind( op, rs, mc, i );
}
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;
}
}
if ( mc != NULL ) {
for ( i = 0; i < mi->mi_ntargets; i++ ) {
a_metasingleconn_t *msc = &mc->mc_conns[ i ];
if ( !BER_BVISNULL( &msc->msc_bound_ndn ) ) {
ch_free( msc->msc_bound_ndn.bv_val );
}
if ( !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 );
}
}
asyncmeta_back_conn_free( 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;
}
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;
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 );
/* the test on the bind method should be superfluous */
switch ( be_rootdn_bind( op, rs ) ) {
case LDAP_SUCCESS:
if ( META_BACK_DEFER_ROOTDN_BIND( mi ) ) {
/* frontend will return success */
return rs->sr_err;
}
isroot = 1;
/* fallthru */
case SLAP_CB_CONTINUE:
break;
default:
/* be_rootdn_bind() sent result */
return rs->sr_err;
}
/* 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 ) {
if ( LogTest( LDAP_DEBUG_ANY ) ) {
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 );
}
/* 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;
}
candidates = meta_back_candidates_get( op );
/*
* 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;
/*
* 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 ) {
/*
* 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 );
}
if ( isroot ) {
if ( mt->mt_idassert_authmethod == LDAP_AUTH_NONE
|| BER_BVISNULL( &mt->mt_idassert_authcDN ) )
{
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 ( !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;
}
(void)meta_back_proxy_authz_bind( mc, i, op, rs, LDAP_BACK_DONTSEND, 1 );
lerr = rs->sr_err;
} else {
lerr = meta_back_single_bind( op, rs, mc, i );
}
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;
}
if ( !LDAP_BACK_PCONN_ISPRIV( mc )
&& !dn_match( &op->o_req_ndn, &mc->mc_local_ndn ) )
{
int lerr;
/* wait for all other ops to release the connection */
ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
assert( mc->mc_refcnt == 1 );
#if META_BACK_PRINT_CONNTREE > 0
meta_back_print_conntree( mi, ">>> meta_back_bind" );
#endif /* META_BACK_PRINT_CONNTREE */
/* delete all cached connections with the current connection */
if ( LDAP_BACK_SINGLECONN( mi ) ) {
metaconn_t *tmpmc;
while ( ( tmpmc = avl_delete( &mi->mi_conninfo.lai_tree, (caddr_t)mc, meta_back_conn_cmp ) ) != NULL )
{
assert( !LDAP_BACK_PCONN_ISPRIV( mc ) );
Debug( LDAP_DEBUG_TRACE,
"=>meta_back_bind: destroying conn %lu (refcnt=%u)\n",
mc->mc_conn->c_connid, mc->mc_refcnt );
if ( tmpmc->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 );
lerr = avl_insert( &mi->mi_conninfo.lai_tree, (caddr_t)mc,
meta_back_conndn_cmp, meta_back_conndn_dup );
#if META_BACK_PRINT_CONNTREE > 0
meta_back_print_conntree( mi, "<<< meta_back_bind" );
#endif /* META_BACK_PRINT_CONNTREE */
if ( lerr == 0 ) {
#if 0
/* NOTE: a connection cannot be privileged
* and be in the avl tree at the same time
*/
if ( isroot ) {
LDAP_BACK_CONN_ISPRIV_SET( mc );
LDAP_BACK_PCONN_SET( mc, op );
}
#endif
LDAP_BACK_CONN_CACHED_SET( mc );
} else {
LDAP_BACK_CONN_CACHED_CLEAR( mc );
}
ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
}
}
if ( mc != NULL ) {
meta_back_release_conn( mi, 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;
}
int
asyncmeta_back_search( Operation *op, SlapReply *rs )
{
a_metainfo_t *mi = ( a_metainfo_t * )op->o_bd->be_private;
struct timeval save_tv = { 0, 0 },
tv;
time_t stoptime = (time_t)(-1),
lastres_time = slap_get_time(),
timeout = 0;
int rc = 0, sres = LDAP_SUCCESS;
char *matched = NULL;
int last = 0, ncandidates = 0,
initial_candidates = 0, candidate_match = 0,
needbind = 0;
ldap_back_send_t sendok = LDAP_BACK_SENDERR;
long i,j;
int is_ok = 0;
void *savepriv;
SlapReply *candidates = NULL;
int do_taint = 0;
bm_context_t *bc;
a_metaconn_t *mc;
slap_callback *cb = op->o_callback;
rs_assert_ready( rs );
rs->sr_flags &= ~REP_ENTRY_MASK; /* paranoia, we can set rs = non-entry */
/*
* controls are set in ldap_back_dobind()
*
* FIXME: in case of values return filter, we might want
* to map attrs and maybe rewrite value
*/
asyncmeta_new_bm_context(op, rs, &bc, mi->mi_ntargets );
if (bc == NULL) {
rs->sr_err = LDAP_OTHER;
send_ldap_result(op, rs);
return rs->sr_err;
}
candidates = bc->candidates;
mc = asyncmeta_getconn( op, rs, candidates, NULL, LDAP_BACK_DONTSEND, 0);
if ( !mc || rs->sr_err != LDAP_SUCCESS) {
op->o_callback = cb;
send_ldap_result(op, rs);
asyncmeta_clear_bm_context(bc);
return rs->sr_err;
}
/*
* Inits searches
*/
for ( i = 0; i < mi->mi_ntargets; i++ ) {
/* reset sr_msgid; it is used in most loops
* to check if that target is still to be considered */
candidates[i].sr_msgid = META_MSGID_UNDEFINED;
/* a target is marked as candidate by asyncmeta_getconn();
* if for any reason (an error, it's over or so) it is
* no longer active, sr_msgid is set to META_MSGID_IGNORE
* but it remains candidate, which means it has been active
* at some point during the operation. This allows to
* use its response code and more to compute the final
* response */
if ( !META_IS_CANDIDATE( &candidates[ i ] ) ) {
continue;
}
candidates[ i ].sr_matched = NULL;
candidates[ i ].sr_text = NULL;
candidates[ i ].sr_ref = NULL;
candidates[ i ].sr_ctrls = NULL;
candidates[ i ].sr_nentries = 0;
candidates[ i ].sr_type = -1;
/* get largest timeout among candidates */
if ( mi->mi_targets[ i ]->mt_timeout[ SLAP_OP_SEARCH ]
&& mi->mi_targets[ i ]->mt_timeout[ SLAP_OP_SEARCH ] > timeout )
{
timeout = mi->mi_targets[ i ]->mt_timeout[ SLAP_OP_SEARCH ];
}
}
bc->timeout = timeout;
bc->stoptime = op->o_time + bc->timeout;
if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
stoptime = op->o_time + op->ors_tlimit;
if (stoptime < bc->stoptime) {
bc->stoptime = stoptime;
bc->searchtime = 1;
bc->timeout = op->ors_tlimit;
}
}
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
rc = asyncmeta_add_message_queue(mc, bc);
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
if (rc != LDAP_SUCCESS) {
rs->sr_err = LDAP_BUSY;
rs->sr_text = "Maximum pending ops limit exceeded";
asyncmeta_clear_bm_context(bc);
op->o_callback = cb;
send_ldap_result(op, rs);
goto finish;
}
for ( i = 0; i < mi->mi_ntargets; i++ ) {
if ( !META_IS_CANDIDATE( &candidates[ i ] )
|| candidates[ i ].sr_err != LDAP_SUCCESS )
{
continue;
}
rc = asyncmeta_dobind_init_with_retry(op, rs, bc, mc, i);
switch (rc)
{
case META_SEARCH_CANDIDATE:
/* target is already bound, just send the search request */
ncandidates++;
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: IS_CANDIDATE "
"cnd=\"%ld\"\n", op->o_log_prefix, i , 0);
rc = asyncmeta_back_search_start( op, rs, mc, bc, i, NULL, 0 );
if (rc == META_SEARCH_ERR) {
META_CANDIDATE_CLEAR(&candidates[i]);
candidates[ i ].sr_msgid = META_MSGID_IGNORE;
if ( META_BACK_ONERR_STOP( mi ) ) {
asyncmeta_handle_onerr_stop(op,rs,mc,bc,i,cb);
goto finish;
}
else {
continue;
}
}
break;
case META_SEARCH_NOT_CANDIDATE:
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: NOT_CANDIDATE "
"cnd=\"%ld\"\n", op->o_log_prefix, i , 0);
candidates[ i ].sr_msgid = META_MSGID_IGNORE;
break;
case META_SEARCH_NEED_BIND:
case META_SEARCH_CONNECTING:
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: NEED_BIND "
"cnd=\"%ld\" %p\n", op->o_log_prefix, i , &mc->mc_conns[i]);
ncandidates++;
rc = asyncmeta_dobind_init(op, rs, bc, mc, i);
if (rc == META_SEARCH_ERR) {
candidates[ i ].sr_msgid = META_MSGID_IGNORE;
if ( META_BACK_ONERR_STOP( mi ) ) {
asyncmeta_handle_onerr_stop(op,rs,mc,bc,i,cb);
goto finish;
}
else {
continue;
}
}
break;
case META_SEARCH_BINDING:
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: BINDING "
"cnd=\"%ld\" %p\n", op->o_log_prefix, i , &mc->mc_conns[i]);
ncandidates++;
/* Todo add the context to the message queue but do not send the request
the receiver must send this when we are done binding */
/* question - how would do receiver know to which targets??? */
break;
case META_SEARCH_ERR:
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: SEARCH_ERR "
"cnd=\"%ldd\"\n", op->o_log_prefix, i , 0);
candidates[ i ].sr_msgid = META_MSGID_IGNORE;
candidates[ i ].sr_type = REP_RESULT;
if ( META_BACK_ONERR_STOP( mi ) ) {
asyncmeta_handle_onerr_stop(op,rs,mc,bc,i,cb);
goto finish;
}
else {
continue;
}
break;
default:
assert( 0 );
break;
}
}
initial_candidates = ncandidates;
if ( LogTest( LDAP_DEBUG_TRACE ) ) {
char cnd[ SLAP_TEXT_BUFLEN ];
int c;
for ( c = 0; c < mi->mi_ntargets; c++ ) {
if ( META_IS_CANDIDATE( &candidates[ c ] ) ) {
cnd[ c ] = '*';
} else {
cnd[ c ] = ' ';
}
}
cnd[ c ] = '\0';
Debug( LDAP_DEBUG_TRACE, "%s asyncmeta_back_search: ncandidates=%d "
"cnd=\"%s\"\n", op->o_log_prefix, ncandidates, cnd );
}
if ( initial_candidates == 0 ) {
/* NOTE: here we are not sending any matchedDN;
* this is intended, because if the back-meta
* is serving this search request, but no valid
* candidate could be looked up, it means that
* there is a hole in the mapping of the targets
* and thus no knowledge of any remote superior
* is available */
Debug( LDAP_DEBUG_ANY, "%s asyncmeta_back_search: "
"base=\"%s\" scope=%d: "
"no candidate could be selected\n",
op->o_log_prefix, op->o_req_dn.bv_val,
op->ors_scope );
/* FIXME: we're sending the first error we encounter;
* maybe we should pick the worst... */
rc = LDAP_NO_SUCH_OBJECT;
for ( i = 0; i < mi->mi_ntargets; i++ ) {
if ( META_IS_CANDIDATE( &candidates[ i ] )
&& candidates[ i ].sr_err != LDAP_SUCCESS )
{
rc = candidates[ i ].sr_err;
break;
}
}
rs->sr_err = rc;
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
asyncmeta_drop_bc(mc, bc);
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
op->o_callback = cb;
send_ldap_result(op, rs);
asyncmeta_clear_bm_context(bc);
goto finish;
}
ldap_pvt_thread_mutex_lock( &mc->mc_om_mutex);
asyncmeta_start_listeners(mc, candidates, bc);
ldap_pvt_thread_mutex_unlock( &mc->mc_om_mutex);
finish:
return rs->sr_err;
}