2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2006 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
11 * A copy of this license is available in the file LICENSE in the
12 * top-level directory of the distribution or, alternatively, at
13 * <http://www.OpenLDAP.org/license.html>.
15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
16 * All rights reserved.
18 * Redistribution and use in source and binary forms are permitted
19 * provided that this notice is preserved and that due credit is given
20 * to the University of Michigan at Ann Arbor. The name of the University
21 * may not be used to endorse or promote products derived from this
22 * software without specific prior written permission. This software
23 * is provided ``as is'' without express or implied warranty.
33 #include <ac/socket.h>
35 #include <ac/string.h>
37 #include <ac/unistd.h>
43 #include "slapi/slapi.h"
46 /* protected by connections_mutex */
47 static ldap_pvt_thread_mutex_t connections_mutex;
48 static Connection *connections = NULL;
50 static ldap_pvt_thread_mutex_t conn_nextid_mutex;
51 static unsigned long conn_nextid = 0;
53 static const char conn_lost_str[] = "connection lost";
55 /* structure state (protected by connections_mutex) */
56 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
57 #define SLAP_C_UNUSED 0x01
58 #define SLAP_C_USED 0x02
59 #define SLAP_C_PENDING 0x03
61 /* connection state (protected by c_mutex ) */
62 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
63 #define SLAP_C_INACTIVE 0x01 /* zero threads */
64 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
65 #define SLAP_C_BINDING 0x03 /* binding */
66 #define SLAP_C_CLOSING 0x04 /* closing */
67 #define SLAP_C_CLIENT 0x05 /* outbound client conn */
70 connection_state2str( int state )
73 case SLAP_C_INVALID: return "!";
74 case SLAP_C_INACTIVE: return "|";
75 case SLAP_C_ACTIVE: return "";
76 case SLAP_C_BINDING: return "B";
77 case SLAP_C_CLOSING: return "C";
78 case SLAP_C_CLIENT: return "L";
84 static Connection* connection_get( ber_socket_t s );
86 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
88 typedef struct conn_readinfo {
90 ldap_pvt_thread_start_t *func;
95 static int connection_input( Connection *c, conn_readinfo *cri );
97 static int connection_input( Connection *c );
99 static void connection_close( Connection *c );
101 static int connection_op_activate( Operation *op );
102 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
103 static void connection_op_queue( Operation *op );
105 static int connection_resched( Connection *conn );
106 static void connection_abandon( Connection *conn );
107 static void connection_destroy( Connection *c );
109 static ldap_pvt_thread_start_t connection_operation;
112 * Initialize connection management infrastructure.
114 int connections_init(void)
118 assert( connections == NULL );
120 if( connections != NULL) {
121 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
126 /* should check return of every call */
127 ldap_pvt_thread_mutex_init( &connections_mutex );
128 ldap_pvt_thread_mutex_init( &conn_nextid_mutex );
130 connections = (Connection *) ch_calloc( dtblsize, sizeof(Connection) );
132 if( connections == NULL ) {
133 Debug( LDAP_DEBUG_ANY, "connections_init: "
134 "allocation (%d*%ld) of connection array failed\n",
135 dtblsize, (long) sizeof(Connection), 0 );
139 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
140 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
142 for (i=0; i<dtblsize; i++) connections[i].c_conn_idx = i;
145 * per entry initialization of the Connection array initialization
146 * will be done by connection_init()
153 * Destroy connection management infrastructure.
156 int connections_destroy(void)
160 /* should check return of every call */
162 if( connections == NULL) {
163 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
168 for ( i = 0; i < dtblsize; i++ ) {
169 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
170 ber_sockbuf_free( connections[i].c_sb );
171 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
172 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
173 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
175 if ( slapi_plugins_used ) {
176 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION,
186 ldap_pvt_thread_mutex_destroy( &connections_mutex );
187 ldap_pvt_thread_mutex_destroy( &conn_nextid_mutex );
192 * shutdown all connections
194 int connections_shutdown(void)
198 for ( i = 0; i < dtblsize; i++ ) {
199 if( connections[i].c_struct_state != SLAP_C_USED ) {
202 /* give persistent clients a chance to cleanup */
203 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
204 ldap_pvt_thread_pool_submit( &connection_pool,
205 connections[i].c_clientfunc, connections[i].c_clientarg );
209 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
211 /* c_mutex is locked */
212 connection_closing( &connections[i], "slapd shutdown" );
213 connection_close( &connections[i] );
215 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
222 * Timeout idle connections.
224 int connections_timeout_idle(time_t now)
230 for( c = connection_first( &connindex );
232 c = connection_next( c, &connindex ) )
234 /* Don't timeout a slow-running request or a persistent
235 * outbound connection */
236 if( c->c_n_ops_executing || c->c_conn_state == SLAP_C_CLIENT ) {
240 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
242 connection_closing( c, "idletimeout" );
243 connection_close( c );
247 connection_done( c );
252 static Connection* connection_get( ber_socket_t s )
256 Debug( LDAP_DEBUG_ARGS,
257 "connection_get(%ld)\n",
260 assert( connections != NULL );
262 if(s == AC_SOCKET_INVALID) return NULL;
265 assert( s < dtblsize );
273 ldap_pvt_thread_mutex_lock( &connections_mutex );
274 for(i=0; i<dtblsize; i++) {
275 if( connections[i].c_struct_state == SLAP_C_PENDING )
278 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
279 assert( connections[i].c_conn_state == SLAP_C_INVALID );
280 assert( connections[i].c_sb == 0 );
284 ber_sockbuf_ctrl( connections[i].c_sb,
285 LBER_SB_OPT_GET_FD, &sd );
287 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
288 assert( connections[i].c_conn_state == SLAP_C_INVALID );
289 assert( sd == AC_SOCKET_INVALID );
293 /* state can actually change from used -> unused by resched,
294 * so don't assert details here.
302 ldap_pvt_thread_mutex_unlock( &connections_mutex );
309 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
311 ldap_pvt_thread_mutex_lock( &c->c_mutex );
313 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
314 if( c->c_struct_state != SLAP_C_USED ) {
315 /* connection must have been closed due to resched */
317 assert( c->c_conn_state == SLAP_C_INVALID );
318 assert( sd == AC_SOCKET_INVALID );
320 Debug( LDAP_DEBUG_TRACE,
321 "connection_get(%d): connection not used\n",
324 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
328 Debug( LDAP_DEBUG_TRACE,
329 "connection_get(%d): got connid=%lu\n",
334 assert( c->c_struct_state == SLAP_C_USED );
335 assert( c->c_conn_state != SLAP_C_INVALID );
336 assert( sd != AC_SOCKET_INVALID );
338 #ifndef SLAPD_MONITOR
339 if ( global_idletimeout > 0 )
340 #endif /* ! SLAPD_MONITOR */
342 c->c_activitytime = slap_get_time();
349 static void connection_return( Connection *c )
351 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
354 long connection_init(
358 const char* peername,
361 struct berval *authid )
367 assert( connections != NULL );
369 assert( listener != NULL );
370 assert( dnsname != NULL );
371 assert( peername != NULL );
374 assert( flags != CONN_IS_TLS );
377 if( s == AC_SOCKET_INVALID ) {
378 Debug( LDAP_DEBUG_ANY,
379 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
385 assert( s < dtblsize );
387 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
390 assert( c->c_struct_state == SLAP_C_UNUSED );
397 ldap_pvt_thread_mutex_lock( &connections_mutex );
398 for( i=0; i < dtblsize; i++) {
401 if ( connections[i].c_struct_state == SLAP_C_PENDING )
404 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
405 assert( connections[i].c_sb == 0 );
407 c->c_struct_state = SLAP_C_PENDING;
412 sd = AC_SOCKET_INVALID;
413 if (connections[i].c_sb != NULL) {
414 ber_sockbuf_ctrl( connections[i].c_sb,
415 LBER_SB_OPT_GET_FD, &sd );
418 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
419 assert( sd == AC_SOCKET_INVALID );
421 c->c_struct_state = SLAP_C_PENDING;
425 if( connections[i].c_conn_state == SLAP_C_CLIENT ) continue;
427 assert( connections[i].c_struct_state == SLAP_C_USED );
428 assert( connections[i].c_conn_state != SLAP_C_INVALID );
429 assert( sd != AC_SOCKET_INVALID );
431 ldap_pvt_thread_mutex_unlock( &connections_mutex );
434 Debug( LDAP_DEBUG_ANY,
435 "connection_init(%d): connection table full "
436 "(%d/%d)\n", s, i, dtblsize);
443 c->c_send_ldap_result = slap_send_ldap_result;
444 c->c_send_search_entry = slap_send_search_entry;
445 c->c_send_search_reference = slap_send_search_reference;
446 c->c_send_ldap_extended = slap_send_ldap_extended;
447 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
449 BER_BVZERO( &c->c_authmech );
450 BER_BVZERO( &c->c_dn );
451 BER_BVZERO( &c->c_ndn );
453 c->c_listener = NULL;
454 BER_BVZERO( &c->c_peer_domain );
455 BER_BVZERO( &c->c_peer_name );
457 LDAP_STAILQ_INIT(&c->c_ops);
458 LDAP_STAILQ_INIT(&c->c_pending_ops);
461 c->c_txn = CONN_TXN_INACTIVE;
462 c->c_txn_backend = NULL;
463 LDAP_STAILQ_INIT(&c->c_txn_ops);
466 BER_BVZERO( &c->c_sasl_bind_mech );
468 c->c_sasl_authctx = NULL;
469 c->c_sasl_sockctx = NULL;
470 c->c_sasl_extra = NULL;
471 c->c_sasl_bindop = NULL;
473 c->c_sb = ber_sockbuf_alloc( );
476 ber_len_t max = sockbuf_max_incoming;
477 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
480 c->c_currentber = NULL;
482 /* should check status of thread calls */
483 ldap_pvt_thread_mutex_init( &c->c_mutex );
484 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
485 ldap_pvt_thread_cond_init( &c->c_write_cv );
488 if ( slapi_plugins_used ) {
489 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
494 ldap_pvt_thread_mutex_lock( &c->c_mutex );
496 assert( BER_BVISNULL( &c->c_authmech ) );
497 assert( BER_BVISNULL( &c->c_dn ) );
498 assert( BER_BVISNULL( &c->c_ndn ) );
499 assert( c->c_listener == NULL );
500 assert( BER_BVISNULL( &c->c_peer_domain ) );
501 assert( BER_BVISNULL( &c->c_peer_name ) );
502 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
503 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
505 assert( c->c_txn == CONN_TXN_INACTIVE );
506 assert( c->c_txn_backend == NULL );
507 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
509 assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
510 assert( c->c_sasl_done == 0 );
511 assert( c->c_sasl_authctx == NULL );
512 assert( c->c_sasl_sockctx == NULL );
513 assert( c->c_sasl_extra == NULL );
514 assert( c->c_sasl_bindop == NULL );
515 assert( c->c_currentber == NULL );
516 assert( c->c_writewaiter == 0);
518 c->c_listener = listener;
520 if ( flags == CONN_IS_CLIENT ) {
521 c->c_conn_state = SLAP_C_CLIENT;
522 c->c_struct_state = SLAP_C_USED;
523 c->c_close_reason = "?"; /* should never be needed */
524 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &s );
525 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
530 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
531 ber_str2bv( peername, 0, 1, &c->c_peer_name );
533 c->c_n_ops_received = 0;
534 c->c_n_ops_executing = 0;
535 c->c_n_ops_pending = 0;
536 c->c_n_ops_completed = 0;
542 /* set to zero until bind, implies LDAP_VERSION3 */
545 #ifndef SLAPD_MONITOR
546 if ( global_idletimeout > 0 )
547 #endif /* ! SLAPD_MONITOR */
549 c->c_activitytime = c->c_starttime = slap_get_time();
552 #ifdef LDAP_CONNECTIONLESS
554 if( flags == CONN_IS_UDP ) {
557 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
558 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
560 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
561 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
562 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
563 LBER_SBIOD_LEVEL_PROVIDER, NULL );
568 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
569 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
571 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
572 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
576 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
577 INT_MAX, (void*)"ldap_" );
580 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
581 c /* non-NULL */ ) < 0 )
583 Debug( LDAP_DEBUG_ANY,
584 "connection_init(%d, %s): set nonblocking failed\n",
585 s, c->c_peer_name.bv_val, 0 );
588 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
589 id = c->c_connid = conn_nextid++;
590 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
592 c->c_conn_state = SLAP_C_INACTIVE;
593 c->c_struct_state = SLAP_C_USED;
594 c->c_close_reason = "?"; /* should never be needed */
596 c->c_ssf = c->c_transport_ssf = ssf;
600 if ( flags == CONN_IS_TLS ) {
602 c->c_needs_tls_accept = 1;
605 c->c_needs_tls_accept = 0;
609 slap_sasl_open( c, 0 );
610 slap_sasl_external( c, ssf, authid );
612 slapd_add_internal( s, 1 );
613 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
615 backend_connection_init(c);
620 void connection2anonymous( Connection *c )
622 assert( connections != NULL );
626 ber_len_t max = sockbuf_max_incoming;
627 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
630 if ( !BER_BVISNULL( &c->c_authmech ) ) {
631 ch_free(c->c_authmech.bv_val);
633 BER_BVZERO( &c->c_authmech );
635 if ( !BER_BVISNULL( &c->c_dn ) ) {
636 ch_free(c->c_dn.bv_val);
638 BER_BVZERO( &c->c_dn );
640 if ( !BER_BVISNULL( &c->c_ndn ) ) {
641 ch_free(c->c_ndn.bv_val);
643 BER_BVZERO( &c->c_ndn );
645 if ( !BER_BVISNULL( &c->c_sasl_authz_dn ) ) {
646 ber_memfree_x( c->c_sasl_authz_dn.bv_val, NULL );
648 BER_BVZERO( &c->c_sasl_authz_dn );
650 c->c_authz_backend = NULL;
654 connection_destroy( Connection *c )
657 unsigned long connid;
658 const char *close_reason;
661 assert( connections != NULL );
663 assert( c->c_struct_state != SLAP_C_UNUSED );
664 assert( c->c_conn_state != SLAP_C_INVALID );
665 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
666 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
668 assert( c->c_txn == CONN_TXN_INACTIVE );
669 assert( c->c_txn_backend == NULL );
670 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
672 assert( c->c_writewaiter == 0);
674 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
675 connid = c->c_connid;
676 close_reason = c->c_close_reason;
678 ldap_pvt_thread_mutex_lock( &connections_mutex );
679 c->c_struct_state = SLAP_C_PENDING;
680 ldap_pvt_thread_mutex_unlock( &connections_mutex );
682 backend_connection_destroy(c);
687 c->c_activitytime = c->c_starttime = 0;
689 connection2anonymous( c );
690 c->c_listener = NULL;
692 if(c->c_peer_domain.bv_val != NULL) {
693 free(c->c_peer_domain.bv_val);
695 BER_BVZERO( &c->c_peer_domain );
696 if(c->c_peer_name.bv_val != NULL) {
697 free(c->c_peer_name.bv_val);
699 BER_BVZERO( &c->c_peer_name );
701 c->c_sasl_bind_in_progress = 0;
702 if(c->c_sasl_bind_mech.bv_val != NULL) {
703 free(c->c_sasl_bind_mech.bv_val);
705 BER_BVZERO( &c->c_sasl_bind_mech );
707 slap_sasl_close( c );
709 if ( c->c_currentber != NULL ) {
710 ber_free( c->c_currentber, 1 );
711 c->c_currentber = NULL;
716 /* call destructors, then constructors; avoids unnecessary allocation */
717 if ( slapi_plugins_used ) {
718 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
722 c->c_conn_state = SLAP_C_INVALID;
723 c->c_struct_state = SLAP_C_UNUSED;
724 c->c_close_reason = "?"; /* should never be needed */
727 c->c_sb = ber_sockbuf_alloc( );
729 ber_len_t max = sockbuf_max_incoming;
730 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
733 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
735 /* c must be fully reset by this point; when we call slapd_remove
736 * it may get immediately reused by a new connection.
738 if ( sd != AC_SOCKET_INVALID ) {
739 slapd_remove( sd, sb, 1, 0, 0 );
741 Statslog( LDAP_DEBUG_STATS, (close_reason
742 ? "conn=%lu fd=%ld closed (%s)\n"
743 : "conn=%lu fd=%ld closed\n"),
744 connid, (long) sd, close_reason, 0, 0 );
748 int connection_state_closing( Connection *c )
750 /* c_mutex must be locked by caller */
754 assert( c->c_struct_state == SLAP_C_USED );
756 state = c->c_conn_state;
758 assert( state != SLAP_C_INVALID );
760 return state == SLAP_C_CLOSING;
763 static void connection_abandon( Connection *c )
765 /* c_mutex must be locked by caller */
767 Operation *o, *next, op = {0};
773 op.o_connid = c->c_connid;
774 op.o_tag = LDAP_REQ_ABANDON;
776 for ( o = LDAP_STAILQ_FIRST( &c->c_ops ); o; o=next ) {
777 next = LDAP_STAILQ_NEXT( o, o_next );
778 op.orn_msgid = o->o_msgid;
780 op.o_bd = frontendDB;
781 frontendDB->be_abandon( &op, &rs );
785 /* remove operations in pending transaction */
786 while ( (o = LDAP_STAILQ_FIRST( &c->c_txn_ops )) != NULL) {
787 LDAP_STAILQ_REMOVE_HEAD( &c->c_txn_ops, o_next );
788 LDAP_STAILQ_NEXT(o, o_next) = NULL;
792 /* clear transaction */
793 c->c_txn_backend = NULL;
794 c->c_txn = CONN_TXN_INACTIVE;
797 /* remove pending operations */
798 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
799 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
800 LDAP_STAILQ_NEXT(o, o_next) = NULL;
805 void connection_closing( Connection *c, const char *why )
807 assert( connections != NULL );
809 assert( c->c_struct_state == SLAP_C_USED );
810 assert( c->c_conn_state != SLAP_C_INVALID );
812 /* c_mutex must be locked by caller */
814 if( c->c_conn_state != SLAP_C_CLOSING ) {
817 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
818 Debug( LDAP_DEBUG_TRACE,
819 "connection_closing: readying conn=%lu sd=%d for close\n",
820 c->c_connid, sd, 0 );
821 /* update state to closing */
822 c->c_conn_state = SLAP_C_CLOSING;
823 c->c_close_reason = why;
825 /* don't listen on this port anymore */
826 slapd_clr_read( sd, 0 );
828 /* abandon active operations */
829 connection_abandon( c );
831 /* wake write blocked operations */
832 if ( c->c_writewaiter ) {
833 ldap_pvt_thread_cond_signal( &c->c_write_cv );
834 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
835 slapd_clr_write( sd, 1 );
836 ldap_pvt_thread_mutex_lock( &c->c_write_mutex );
837 ldap_pvt_thread_mutex_lock( &c->c_mutex );
838 ldap_pvt_thread_mutex_unlock( &c->c_write_mutex );
840 slapd_clr_write( sd, 1 );
843 } else if( why == NULL && c->c_close_reason == conn_lost_str ) {
844 /* Client closed connection after doing Unbind. */
845 c->c_close_reason = NULL;
850 connection_close( Connection *c )
852 ber_socket_t sd = AC_SOCKET_INVALID;
854 assert( connections != NULL );
857 if ( c->c_conn_state != SLAP_C_CLOSING )
860 assert( c->c_struct_state == SLAP_C_USED );
862 /* NOTE: c_mutex should be locked by caller */
864 /* NOTE: don't get the file descriptor if not needed */
865 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
866 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
869 if ( !LDAP_STAILQ_EMPTY(&c->c_ops) ||
870 !LDAP_STAILQ_EMPTY(&c->c_pending_ops) )
872 Debug( LDAP_DEBUG_TRACE,
873 "connection_close: deferring conn=%lu sd=%d\n",
874 c->c_connid, sd, 0 );
878 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
879 c->c_connid, sd, 0 );
881 connection_destroy( c );
884 unsigned long connections_nextid(void)
887 assert( connections != NULL );
889 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
893 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
898 Connection* connection_first( ber_socket_t *index )
900 assert( connections != NULL );
901 assert( index != NULL );
903 ldap_pvt_thread_mutex_lock( &connections_mutex );
904 for( *index = 0; *index < dtblsize; (*index)++) {
905 if( connections[*index].c_struct_state != SLAP_C_UNINITIALIZED ) {
909 ldap_pvt_thread_mutex_unlock( &connections_mutex );
911 return connection_next(NULL, index);
914 Connection* connection_next( Connection *c, ber_socket_t *index )
916 assert( connections != NULL );
917 assert( index != NULL );
918 assert( *index <= dtblsize );
920 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
924 ldap_pvt_thread_mutex_lock( &connections_mutex );
925 for(; *index < dtblsize; (*index)++) {
927 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
928 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
936 if( connections[*index].c_struct_state == SLAP_C_USED ) {
937 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
938 c = &connections[(*index)++];
939 if ( ldap_pvt_thread_mutex_trylock( &c->c_mutex )) {
941 ldap_pvt_thread_mutex_unlock( &connections_mutex );
942 ldap_pvt_thread_mutex_lock( &c->c_mutex );
943 ldap_pvt_thread_mutex_lock( &connections_mutex );
944 if ( c->c_struct_state != SLAP_C_USED ) {
945 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
953 c_struct = connections[*index].c_struct_state;
954 if ( c_struct == SLAP_C_PENDING )
956 assert( c_struct == SLAP_C_UNUSED );
957 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
960 ldap_pvt_thread_mutex_unlock( &connections_mutex );
964 void connection_done( Connection *c )
966 assert( connections != NULL );
968 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
972 * connection_activity - handle the request operation op on connection
973 * conn. This routine figures out what kind of operation it is and
974 * calls the appropriate stub to handle it.
978 /* FIXME: returns 0 in case of failure */
979 #define INCR_OP_INITIATED(index) \
981 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
982 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated_[(index)], 1); \
983 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
985 #define INCR_OP_COMPLETED(index) \
987 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
988 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
989 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed_[(index)], 1); \
990 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
992 #else /* !SLAPD_MONITOR */
993 #define INCR_OP_INITIATED(index) do { } while (0)
994 #define INCR_OP_COMPLETED(index) \
996 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
997 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
998 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
1000 #endif /* !SLAPD_MONITOR */
1003 * NOTE: keep in sync with enum in slapd.h
1005 static BI_op_func *opfun[] = {
1020 connection_operation( void *ctx, void *arg_v )
1022 int rc = LDAP_OTHER;
1023 Operation *op = arg_v;
1024 SlapReply rs = {REP_RESULT};
1025 ber_tag_t tag = op->o_tag;
1026 slap_op_t opidx = SLAP_OP_LAST;
1027 Connection *conn = op->o_conn;
1028 void *memctx = NULL;
1029 void *memctx_null = NULL;
1032 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex );
1033 /* FIXME: returns 0 in case of failure */
1034 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated, 1);
1035 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex );
1037 op->o_threadctx = ctx;
1038 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
1042 case LDAP_REQ_UNBIND:
1044 case LDAP_REQ_DELETE:
1045 case LDAP_REQ_MODDN:
1046 case LDAP_REQ_MODIFY:
1047 case LDAP_REQ_COMPARE:
1048 case LDAP_REQ_SEARCH:
1049 case LDAP_REQ_ABANDON:
1050 case LDAP_REQ_EXTENDED:
1053 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1054 "conn %lu unknown LDAP request 0x%lx\n",
1055 conn->c_connid, tag, 0 );
1056 op->o_tag = LBER_ERROR;
1057 rs.sr_err = LDAP_PROTOCOL_ERROR;
1058 rs.sr_text = "unknown LDAP request";
1059 send_ldap_disconnect( op, &rs );
1060 rc = SLAPD_DISCONNECT;
1061 goto operations_error;
1064 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
1065 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1066 "error: SASL bind in progress (tag=%ld).\n",
1068 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1069 "SASL bind in progress" );
1070 rc = LDAP_OPERATIONS_ERROR;
1071 goto operations_error;
1075 if (( conn->c_txn == CONN_TXN_SPECIFY ) && (
1076 ( tag == LDAP_REQ_ADD ) ||
1077 ( tag == LDAP_REQ_DELETE ) ||
1078 ( tag == LDAP_REQ_MODIFY ) ||
1079 ( tag == LDAP_REQ_MODRDN )))
1081 /* Disable SLAB allocator for all update operations
1082 issued inside of a transaction */
1083 op->o_tmpmemctx = NULL;
1084 op->o_tmpmfuncs = &ch_mfuncs;
1088 /* We can use Thread-Local storage for most mallocs. We can
1089 * also use TL for ber parsing, but not on Add or Modify.
1092 memsiz = ber_len( op->o_ber ) * 64;
1093 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
1095 memsiz = SLAP_SLAB_SIZE;
1097 memctx = slap_sl_mem_create( memsiz, SLAP_SLAB_STACK, ctx );
1098 op->o_tmpmemctx = memctx;
1099 op->o_tmpmfuncs = &slap_sl_mfuncs;
1100 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1101 /* Note - the ber and its buffer are already allocated from
1102 * regular memory; this only affects subsequent mallocs that
1103 * ber_scanf may invoke.
1105 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1109 opidx = slap_req2op( tag );
1110 assert( opidx != SLAP_OP_LAST );
1111 INCR_OP_INITIATED( opidx );
1112 rc = (*(opfun[opidx]))( op, &rs );
1115 if ( rc == SLAPD_DISCONNECT ) {
1118 } else if ( opidx != SLAP_OP_LAST ) {
1119 /* increment completed operations count
1120 * only if operation was initiated
1121 * and rc != SLAPD_DISCONNECT */
1122 INCR_OP_COMPLETED( opidx );
1125 if ( op->o_cancel == SLAP_CANCEL_REQ ) {
1126 if ( rc == SLAPD_ABANDON ) {
1127 op->o_cancel = SLAP_CANCEL_ACK;
1129 op->o_cancel = LDAP_TOO_LATE;
1133 while ( op->o_cancel != SLAP_CANCEL_NONE &&
1134 op->o_cancel != SLAP_CANCEL_DONE )
1136 ldap_pvt_thread_yield();
1139 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1141 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1143 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1144 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1146 conn->c_n_ops_executing--;
1147 conn->c_n_ops_completed++;
1151 case LDAP_REQ_UNBIND:
1152 /* c_mutex is locked */
1153 connection_closing( conn,
1154 tag == LDAP_REQ_UNBIND ? NULL : "operations error" );
1158 connection_resched( conn );
1159 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1163 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1165 int connection_client_setup(
1167 ldap_pvt_thread_start_t *func,
1173 rc = connection_init( s, (Listener *)&dummy_list, "", "",
1174 CONN_IS_CLIENT, 0, NULL );
1175 if ( rc < 0 ) return -1;
1177 c = connection_get( s );
1178 c->c_clientfunc = func;
1179 c->c_clientarg = arg;
1181 slapd_add_internal( s, 0 );
1182 slapd_set_read( s, 1 );
1183 connection_return( c );
1187 void connection_client_enable(
1190 slapd_set_read( s, 1 );
1193 void connection_client_stop(
1199 /* get (locked) connection */
1200 c = connection_get( s );
1202 assert( c->c_conn_state == SLAP_C_CLIENT );
1204 c->c_listener = NULL;
1205 c->c_conn_state = SLAP_C_INVALID;
1206 c->c_struct_state = SLAP_C_UNUSED;
1207 c->c_close_reason = "?"; /* should never be needed */
1209 c->c_sb = ber_sockbuf_alloc( );
1211 ber_len_t max = sockbuf_max_incoming;
1212 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
1214 slapd_remove( s, sb, 0, 1, 0 );
1216 connection_return( c );
1219 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1221 static int connection_read( ber_socket_t s, conn_readinfo *cri );
1223 static void* connection_read_thread( void* ctx, void* argv )
1226 conn_readinfo cri = { NULL, NULL, NULL, 0 };
1227 ber_socket_t s = (long)argv;
1230 * read incoming LDAP requests. If there is more than one,
1231 * the first one is returned with new_op
1233 if( ( rc = connection_read( s, &cri ) ) < 0 ) {
1234 Debug( LDAP_DEBUG_CONNS, "connection_read(%d) error\n", s, 0, 0 );
1235 return (void*)(long)rc;
1238 /* execute a single queued request in the same thread */
1239 if( cri.op && !cri.nullop ) {
1240 rc = (long)connection_operation( ctx, cri.op );
1241 } else if ( cri.func ) {
1242 rc = (long)cri.func( ctx, cri.arg );
1245 return (void*)(long)rc;
1248 int connection_read_activate( ber_socket_t s )
1253 * suspend reading on this file descriptor until a connection processing
1254 * thread reads data on it. Otherwise the listener thread will repeatedly
1255 * submit the same event on it to the pool.
1257 rc = slapd_clr_read( s, 0 );
1261 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1262 connection_read_thread, (void *)(long)s );
1265 Debug( LDAP_DEBUG_ANY,
1266 "connection_read_activate(%d): submit failed (%d)\n",
1274 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1276 connection_read( ber_socket_t s, conn_readinfo *cri )
1278 int connection_read(ber_socket_t s)
1284 assert( connections != NULL );
1286 /* get (locked) connection */
1287 c = connection_get( s );
1290 Debug( LDAP_DEBUG_ANY,
1291 "connection_read(%ld): no connection!\n",
1299 if( c->c_conn_state == SLAP_C_CLOSING ) {
1300 Debug( LDAP_DEBUG_TRACE,
1301 "connection_read(%d): closing, ignoring input for id=%lu\n",
1302 s, c->c_connid, 0 );
1303 connection_return( c );
1307 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1308 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1309 cri->func = c->c_clientfunc;
1310 cri->arg = c->c_clientarg;
1311 /* read should already be cleared */
1313 slapd_clr_read( s, 0 );
1314 ldap_pvt_thread_pool_submit( &connection_pool,
1315 c->c_clientfunc, c->c_clientarg );
1317 connection_return( c );
1321 Debug( LDAP_DEBUG_TRACE,
1322 "connection_read(%d): checking for input on id=%lu\n",
1323 s, c->c_connid, 0 );
1326 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1327 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1329 Debug( LDAP_DEBUG_TRACE,
1330 "connection_read(%d): TLS accept failure "
1331 "error=%d id=%lu, closing\n",
1332 s, rc, c->c_connid );
1334 c->c_needs_tls_accept = 0;
1335 /* c_mutex is locked */
1336 connection_closing( c, "TLS negotiation failure" );
1337 connection_close( c );
1338 connection_return( c );
1341 } else if ( rc == 0 ) {
1343 struct berval authid = BER_BVNULL;
1345 c->c_needs_tls_accept = 0;
1347 /* we need to let SASL know */
1348 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1350 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1351 if( c->c_tls_ssf > c->c_ssf ) {
1352 c->c_ssf = c->c_tls_ssf;
1355 rc = dnX509peerNormalize( ssl, &authid );
1356 if ( rc != LDAP_SUCCESS ) {
1357 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1358 "unable to get TLS client DN, error=%d id=%lu\n",
1359 s, rc, c->c_connid );
1361 Statslog( LDAP_DEBUG_STATS,
1362 "conn=%lu fd=%d TLS established tls_ssf=%u ssf=%u\n",
1363 c->c_connid, (int) s, c->c_tls_ssf, c->c_ssf, 0 );
1364 slap_sasl_external( c, c->c_tls_ssf, &authid );
1365 if ( authid.bv_val ) free( authid.bv_val );
1368 /* if success and data is ready, fall thru to data input loop */
1369 if( !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1371 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1372 slapd_set_read( s, 1 );
1375 connection_return( c );
1381 #ifdef HAVE_CYRUS_SASL
1382 if ( c->c_sasl_layers ) {
1383 /* If previous layer is not removed yet, give up for now */
1384 if ( !c->c_sasl_sockctx ) {
1385 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1386 slapd_set_read( s, 1 );
1389 connection_return( c );
1393 c->c_sasl_layers = 0;
1395 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1396 if( rc != LDAP_SUCCESS ) {
1397 Debug( LDAP_DEBUG_TRACE,
1398 "connection_read(%d): SASL install error "
1399 "error=%d id=%lu, closing\n",
1400 s, rc, c->c_connid );
1402 /* c_mutex is locked */
1403 connection_closing( c, "SASL layer install failure" );
1404 connection_close( c );
1405 connection_return( c );
1411 #define CONNECTION_INPUT_LOOP 1
1412 /* #define DATA_READY_LOOP 1 */
1415 /* How do we do this without getting into a busy loop ? */
1416 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1417 rc = connection_input( c, cri );
1419 rc = connection_input( c );
1422 #ifdef DATA_READY_LOOP
1423 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1424 #elif CONNECTION_INPUT_LOOP
1431 Debug( LDAP_DEBUG_CONNS,
1432 "connection_read(%d): input error=%d id=%lu, closing.\n",
1433 s, rc, c->c_connid );
1435 /* c_mutex is locked */
1436 connection_closing( c, conn_lost_str );
1437 connection_close( c );
1438 connection_return( c );
1442 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1443 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1444 slapd_set_write( s, 0 );
1447 slapd_set_read( s, 1 );
1449 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1450 slapd_set_read( s, 1 );
1453 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1454 slapd_set_write( s, 1 );
1458 connection_return( c );
1464 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1465 connection_input( Connection *conn , conn_readinfo *cri )
1467 connection_input( Connection *conn )
1476 #ifdef LDAP_CONNECTIONLESS
1482 if ( conn->c_currentber == NULL &&
1483 ( conn->c_currentber = ber_alloc()) == NULL )
1485 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1491 #ifdef LDAP_CONNECTIONLESS
1492 if ( conn->c_is_udp ) {
1493 char peername[sizeof("IP=255.255.255.255:65336")];
1495 len = ber_int_sb_read(conn->c_sb, &peeraddr, sizeof(struct sockaddr));
1496 if (len != sizeof(struct sockaddr)) return 1;
1498 sprintf( peername, "IP=%s:%d",
1499 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1500 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1501 Statslog( LDAP_DEBUG_STATS,
1502 "conn=%lu UDP request from %s (%s) accepted.\n",
1503 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1507 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1508 if ( tag != LDAP_TAG_MESSAGE ) {
1509 int err = sock_errno();
1512 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1514 Debug( LDAP_DEBUG_TRACE,
1515 "ber_get_next on fd %d failed errno=%d (%s)\n",
1516 sd, err, sock_errstr(err) );
1517 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1518 /* log, close and send error */
1519 ber_free( conn->c_currentber, 1 );
1520 conn->c_currentber = NULL;
1527 ber = conn->c_currentber;
1528 conn->c_currentber = NULL;
1530 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1531 /* log, close and send error */
1532 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0, 0 );
1537 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1538 /* log, close and send error */
1539 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0, 0 );
1545 #ifdef LDAP_CONNECTIONLESS
1546 if( conn->c_is_udp ) {
1547 if( tag == LBER_OCTETSTRING ) {
1548 ber_get_stringa( ber, &cdn );
1549 tag = ber_peek_tag(ber, &len);
1551 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1552 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1559 if(tag == LDAP_REQ_BIND) {
1560 /* immediately abandon all existing operations upon BIND */
1561 connection_abandon( conn );
1564 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1567 /* clear state if the connection is being reused from inactive */
1568 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1569 memset( &conn->c_pagedresults_state, 0,
1570 sizeof( conn->c_pagedresults_state ) );
1573 op->o_res_ber = NULL;
1575 #ifdef LDAP_CONNECTIONLESS
1576 if (conn->c_is_udp) {
1578 ber_str2bv( cdn, 0, 1, &op->o_dn );
1579 op->o_protocol = LDAP_VERSION2;
1581 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1582 if (op->o_res_ber == NULL) return 1;
1584 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1585 sizeof(struct sockaddr), 0 );
1587 if (rc != sizeof(struct sockaddr)) {
1588 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1592 if (op->o_protocol == LDAP_VERSION2) {
1593 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1595 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1600 #endif /* LDAP_CONNECTIONLESS */
1604 /* Don't process requests when the conn is in the middle of a
1605 * Bind, or if it's closing. Also, don't let any single conn
1606 * use up all the available threads, and don't execute if we're
1607 * currently blocked on output. And don't execute if there are
1608 * already pending ops, let them go first. Abandon operations
1609 * get exceptions to some, but not all, cases.
1613 /* Abandon and Unbind are exempt from these checks */
1614 if (conn->c_conn_state == SLAP_C_CLOSING) {
1617 } else if (conn->c_writewaiter) {
1618 defer = "awaiting write";
1620 } else if (conn->c_n_ops_pending) {
1621 defer = "pending operations";
1625 case LDAP_REQ_ABANDON:
1626 /* Unbind is exempt from these checks */
1627 if (conn->c_n_ops_executing >= connection_pool_max/2) {
1628 defer = "too many executing";
1630 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1635 case LDAP_REQ_UNBIND:
1640 int max = conn->c_dn.bv_len
1641 ? slap_conn_max_pending_auth
1642 : slap_conn_max_pending;
1644 Debug( LDAP_DEBUG_ANY,
1645 "connection_input: conn=%lu deferring operation: %s\n",
1646 conn->c_connid, defer, 0 );
1647 conn->c_n_ops_pending++;
1648 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1649 rc = ( conn->c_n_ops_pending > max ) ? -1 : 0;
1652 conn->c_n_ops_executing++;
1654 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1656 * The first op will be processed in the same thread context,
1657 * as long as there is only one op total.
1658 * Subsequent ops will be submitted to the pool by
1659 * calling connection_op_activate()
1661 if ( cri->op == NULL ) {
1662 /* the first incoming request */
1663 connection_op_queue( op );
1666 if ( !cri->nullop ) {
1668 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1669 connection_operation, (void *) cri->op );
1671 connection_op_activate( op );
1674 connection_op_activate( op );
1679 if ( conn->c_struct_state != SLAP_C_USED ) {
1680 /* connection must have got closed underneath us */
1685 assert( conn->c_struct_state == SLAP_C_USED );
1690 connection_resched( Connection *conn )
1694 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1696 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1698 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1699 "attempting closing conn=%lu sd=%d\n",
1700 conn->c_connid, sd, 0 );
1701 connection_close( conn );
1705 if( conn->c_conn_state != SLAP_C_ACTIVE || conn->c_writewaiter ) {
1706 /* other states need different handling */
1710 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1711 if ( conn->c_n_ops_executing > connection_pool_max/2 ) break;
1713 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1714 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1716 /* pending operations should not be marked for abandonment */
1717 assert(!op->o_abandon);
1719 conn->c_n_ops_pending--;
1720 conn->c_n_ops_executing++;
1722 connection_op_activate( op );
1724 if ( conn->c_conn_state == SLAP_C_BINDING ) break;
1730 connection_init_log_prefix( Operation *op )
1732 if ( op->o_connid == (unsigned long)(-1) ) {
1733 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1734 "conn=-1 op=%lu", op->o_opid );
1737 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1738 "conn=%lu op=%lu", op->o_connid, op->o_opid );
1742 static int connection_bind_cleanup_cb( Operation *op, SlapReply *rs )
1744 op->o_conn->c_sasl_bindop = NULL;
1746 return SLAP_CB_CONTINUE;
1749 static int connection_bind_cb( Operation *op, SlapReply *rs )
1751 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1752 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1753 op->o_conn->c_sasl_bind_in_progress =
1754 ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS );
1756 /* Moved here from bind.c due to ITS#4158 */
1757 op->o_conn->c_sasl_bindop = NULL;
1758 if ( op->orb_method == LDAP_AUTH_SASL ) {
1759 if( rs->sr_err == LDAP_SUCCESS ) {
1760 ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
1761 if( !BER_BVISEMPTY( &op->orb_edn ) ) {
1762 /* edn is always normalized already */
1763 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
1765 op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
1766 BER_BVZERO( &op->orb_edn );
1767 op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
1768 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1770 op->o_conn->c_sasl_ssf = op->orb_ssf;
1771 if( op->orb_ssf > op->o_conn->c_ssf ) {
1772 op->o_conn->c_ssf = op->orb_ssf;
1775 if( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
1776 ber_len_t max = sockbuf_max_incoming_auth;
1777 ber_sockbuf_ctrl( op->o_conn->c_sb,
1778 LBER_SB_OPT_SET_MAX_INCOMING, &max );
1781 /* log authorization identity */
1782 Statslog( LDAP_DEBUG_STATS,
1783 "%s BIND dn=\"%s\" mech=%s ssf=%d\n",
1785 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1786 op->o_conn->c_authmech.bv_val, op->orb_ssf, 0 );
1788 Debug( LDAP_DEBUG_TRACE,
1789 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
1790 op->o_conn->c_authmech.bv_val,
1791 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1794 } else if ( rs->sr_err != LDAP_SASL_BIND_IN_PROGRESS ) {
1795 if ( !BER_BVISNULL( &op->o_conn->c_sasl_bind_mech ) ) {
1796 free( op->o_conn->c_sasl_bind_mech.bv_val );
1797 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1801 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1803 ch_free( op->o_callback );
1804 op->o_callback = NULL;
1806 return SLAP_CB_CONTINUE;
1809 static void connection_op_queue( Operation *op )
1811 ber_tag_t tag = op->o_tag;
1813 if (tag == LDAP_REQ_BIND) {
1814 slap_callback *sc = ch_calloc( 1, sizeof( slap_callback ));
1815 sc->sc_response = connection_bind_cb;
1816 sc->sc_cleanup = connection_bind_cleanup_cb;
1817 sc->sc_next = op->o_callback;
1818 op->o_callback = sc;
1819 op->o_conn->c_conn_state = SLAP_C_BINDING;
1822 if (!op->o_dn.bv_len) {
1823 op->o_authz = op->o_conn->c_authz;
1824 if ( BER_BVISNULL( &op->o_conn->c_sasl_authz_dn )) {
1825 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1826 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1828 ber_dupbv( &op->o_dn, &op->o_conn->c_sasl_authz_dn );
1829 ber_dupbv( &op->o_ndn, &op->o_conn->c_sasl_authz_dn );
1833 op->o_authtype = op->o_conn->c_authtype;
1834 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1836 if (!op->o_protocol) {
1837 op->o_protocol = op->o_conn->c_protocol
1838 ? op->o_conn->c_protocol : LDAP_VERSION3;
1841 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE &&
1842 op->o_protocol > LDAP_VERSION2)
1844 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1847 op->o_connid = op->o_conn->c_connid;
1848 connection_init_log_prefix( op );
1850 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1853 static int connection_op_activate( Operation *op )
1857 connection_op_queue( op );
1859 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1860 connection_operation, (void *) op );
1863 Debug( LDAP_DEBUG_ANY,
1864 "connection_op_activate: submit failed (%d) for conn=%lu\n",
1865 rc, op->o_connid, 0 );
1866 /* should move op to pending list */
1872 int connection_write(ber_socket_t s)
1877 assert( connections != NULL );
1879 slapd_clr_write( s, 0 );
1881 c = connection_get( s );
1883 Debug( LDAP_DEBUG_ANY,
1884 "connection_write(%ld): no connection!\n",
1891 Debug( LDAP_DEBUG_TRACE,
1892 "connection_write(%d): waking output for id=%lu\n",
1893 s, c->c_connid, 0 );
1894 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1896 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1897 slapd_set_read( s, 1 );
1899 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1900 slapd_set_write( s, 1 );
1903 /* If there are ops pending because of a writewaiter,
1906 while ((op = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
1907 if ( !c->c_writewaiter ) break;
1908 if ( c->c_n_ops_executing > connection_pool_max/2 ) break;
1910 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
1911 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1913 /* pending operations should not be marked for abandonment */
1914 assert(!op->o_abandon);
1916 c->c_n_ops_pending--;
1917 c->c_n_ops_executing++;
1919 connection_op_activate( op );
1924 connection_return( c );
1929 connection_fake_init(
1934 conn->c_connid = -1;
1935 conn->c_send_ldap_result = slap_send_ldap_result;
1936 conn->c_send_search_entry = slap_send_search_entry;
1937 conn->c_send_search_reference = slap_send_search_reference;
1938 conn->c_listener = (Listener *)&dummy_list;
1939 conn->c_peer_domain = slap_empty_bv;
1940 conn->c_peer_name = slap_empty_bv;
1942 memset(op, 0, OPERATION_BUFFER_SIZE);
1943 op->o_hdr = (Opheader *)(op+1);
1944 op->o_controls = (void **)(op->o_hdr+1);
1945 /* set memory context */
1946 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx);
1947 op->o_tmpmfuncs = &slap_sl_mfuncs;
1948 op->o_threadctx = ctx;
1949 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
1952 op->o_connid = op->o_conn->c_connid;
1953 connection_init_log_prefix( op );
1956 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, conn );
1957 slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
1958 #endif /* LDAP_SLAPI */
1960 slap_op_time( &op->o_time, &op->o_tincr );
1964 connection_assign_nextid( Connection *conn )
1966 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
1967 conn->c_connid = conn_nextid++;
1968 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );