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 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
200 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 );
208 /* c_mutex is locked */
209 connection_closing( &connections[i], "slapd shutdown" );
210 connection_close( &connections[i] );
213 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
220 * Timeout idle connections.
222 int connections_timeout_idle(time_t now)
228 for( c = connection_first( &connindex );
230 c = connection_next( c, &connindex ) )
232 /* Don't timeout a slow-running request or a persistent
233 * outbound connection */
234 if( c->c_n_ops_executing || c->c_conn_state == SLAP_C_CLIENT ) {
238 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
240 connection_closing( c, "idletimeout" );
241 connection_close( c );
245 connection_done( c );
250 static Connection* connection_get( ber_socket_t s )
254 Debug( LDAP_DEBUG_ARGS,
255 "connection_get(%ld)\n",
258 assert( connections != NULL );
260 if(s == AC_SOCKET_INVALID) return NULL;
263 assert( s < dtblsize );
271 ldap_pvt_thread_mutex_lock( &connections_mutex );
272 for(i=0; i<dtblsize; i++) {
273 if( connections[i].c_struct_state == SLAP_C_PENDING )
276 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
277 assert( connections[i].c_conn_state == SLAP_C_INVALID );
278 assert( connections[i].c_sb == 0 );
282 ber_sockbuf_ctrl( connections[i].c_sb,
283 LBER_SB_OPT_GET_FD, &sd );
285 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
286 assert( connections[i].c_conn_state == SLAP_C_INVALID );
287 assert( sd == AC_SOCKET_INVALID );
291 /* state can actually change from used -> unused by resched,
292 * so don't assert details here.
300 ldap_pvt_thread_mutex_unlock( &connections_mutex );
307 ldap_pvt_thread_mutex_lock( &c->c_mutex );
309 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
311 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
312 if( c->c_struct_state != SLAP_C_USED ) {
313 /* connection must have been closed due to resched */
315 assert( c->c_conn_state == SLAP_C_INVALID );
316 assert( sd == AC_SOCKET_INVALID );
318 Debug( LDAP_DEBUG_TRACE,
319 "connection_get(%d): connection not used\n",
322 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
326 Debug( LDAP_DEBUG_TRACE,
327 "connection_get(%d): got connid=%lu\n",
332 assert( c->c_struct_state == SLAP_C_USED );
333 assert( c->c_conn_state != SLAP_C_INVALID );
334 assert( sd != AC_SOCKET_INVALID );
336 #ifndef SLAPD_MONITOR
337 if ( global_idletimeout > 0 )
338 #endif /* ! SLAPD_MONITOR */
340 c->c_activitytime = slap_get_time();
347 static void connection_return( Connection *c )
349 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
352 long connection_init(
356 const char* peername,
359 struct berval *authid )
365 assert( connections != NULL );
367 assert( listener != NULL );
368 assert( dnsname != NULL );
369 assert( peername != NULL );
372 assert( flags != CONN_IS_TLS );
375 if( s == AC_SOCKET_INVALID ) {
376 Debug( LDAP_DEBUG_ANY,
377 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
383 assert( s < dtblsize );
385 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
388 assert( c->c_struct_state == SLAP_C_UNUSED );
395 ldap_pvt_thread_mutex_lock( &connections_mutex );
396 for( i=0; i < dtblsize; i++) {
399 if ( connections[i].c_struct_state == SLAP_C_PENDING )
402 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
403 assert( connections[i].c_sb == 0 );
405 c->c_struct_state = SLAP_C_PENDING;
410 sd = AC_SOCKET_INVALID;
411 if (connections[i].c_sb != NULL) {
412 ber_sockbuf_ctrl( connections[i].c_sb,
413 LBER_SB_OPT_GET_FD, &sd );
416 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
417 assert( sd == AC_SOCKET_INVALID );
419 c->c_struct_state = SLAP_C_PENDING;
423 if( connections[i].c_conn_state == SLAP_C_CLIENT ) continue;
425 assert( connections[i].c_struct_state == SLAP_C_USED );
426 assert( connections[i].c_conn_state != SLAP_C_INVALID );
427 assert( sd != AC_SOCKET_INVALID );
429 ldap_pvt_thread_mutex_unlock( &connections_mutex );
432 Debug( LDAP_DEBUG_ANY,
433 "connection_init(%d): connection table full "
434 "(%d/%d)\n", s, i, dtblsize);
441 c->c_send_ldap_result = slap_send_ldap_result;
442 c->c_send_search_entry = slap_send_search_entry;
443 c->c_send_search_reference = slap_send_search_reference;
444 c->c_send_ldap_extended = slap_send_ldap_extended;
445 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
447 BER_BVZERO( &c->c_authmech );
448 BER_BVZERO( &c->c_dn );
449 BER_BVZERO( &c->c_ndn );
451 c->c_listener = NULL;
452 BER_BVZERO( &c->c_peer_domain );
453 BER_BVZERO( &c->c_peer_name );
455 LDAP_STAILQ_INIT(&c->c_ops);
456 LDAP_STAILQ_INIT(&c->c_pending_ops);
459 c->c_txn = CONN_TXN_INACTIVE;
460 c->c_txn_backend = NULL;
461 LDAP_STAILQ_INIT(&c->c_txn_ops);
464 BER_BVZERO( &c->c_sasl_bind_mech );
466 c->c_sasl_authctx = NULL;
467 c->c_sasl_sockctx = NULL;
468 c->c_sasl_extra = NULL;
469 c->c_sasl_bindop = NULL;
471 c->c_sb = ber_sockbuf_alloc( );
474 ber_len_t max = sockbuf_max_incoming;
475 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
478 c->c_currentber = NULL;
480 /* should check status of thread calls */
481 ldap_pvt_thread_mutex_init( &c->c_mutex );
482 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
483 ldap_pvt_thread_cond_init( &c->c_write_cv );
486 if ( slapi_plugins_used ) {
487 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
492 ldap_pvt_thread_mutex_lock( &c->c_mutex );
494 assert( BER_BVISNULL( &c->c_authmech ) );
495 assert( BER_BVISNULL( &c->c_dn ) );
496 assert( BER_BVISNULL( &c->c_ndn ) );
497 assert( c->c_listener == NULL );
498 assert( BER_BVISNULL( &c->c_peer_domain ) );
499 assert( BER_BVISNULL( &c->c_peer_name ) );
500 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
501 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
503 assert( c->c_txn == CONN_TXN_INACTIVE );
504 assert( c->c_txn_backend == NULL );
505 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
507 assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
508 assert( c->c_sasl_done == 0 );
509 assert( c->c_sasl_authctx == NULL );
510 assert( c->c_sasl_sockctx == NULL );
511 assert( c->c_sasl_extra == NULL );
512 assert( c->c_sasl_bindop == NULL );
513 assert( c->c_currentber == NULL );
514 assert( c->c_writewaiter == 0);
516 c->c_listener = listener;
518 if ( flags == CONN_IS_CLIENT ) {
519 c->c_conn_state = SLAP_C_CLIENT;
520 c->c_struct_state = SLAP_C_USED;
521 c->c_close_reason = "?"; /* should never be needed */
522 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &s );
523 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
528 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
529 ber_str2bv( peername, 0, 1, &c->c_peer_name );
531 c->c_n_ops_received = 0;
532 c->c_n_ops_executing = 0;
533 c->c_n_ops_pending = 0;
534 c->c_n_ops_completed = 0;
540 /* set to zero until bind, implies LDAP_VERSION3 */
543 #ifndef SLAPD_MONITOR
544 if ( global_idletimeout > 0 )
545 #endif /* ! SLAPD_MONITOR */
547 c->c_activitytime = c->c_starttime = slap_get_time();
550 #ifdef LDAP_CONNECTIONLESS
552 if( flags == CONN_IS_UDP ) {
555 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
556 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
558 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
559 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
560 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
561 LBER_SBIOD_LEVEL_PROVIDER, NULL );
566 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
567 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
569 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
570 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
574 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
575 INT_MAX, (void*)"ldap_" );
578 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
579 c /* non-NULL */ ) < 0 )
581 Debug( LDAP_DEBUG_ANY,
582 "connection_init(%d, %s): set nonblocking failed\n",
583 s, c->c_peer_name.bv_val, 0 );
586 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
587 id = c->c_connid = conn_nextid++;
588 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
590 c->c_conn_state = SLAP_C_INACTIVE;
591 c->c_struct_state = SLAP_C_USED;
592 c->c_close_reason = "?"; /* should never be needed */
594 c->c_ssf = c->c_transport_ssf = ssf;
598 if ( flags == CONN_IS_TLS ) {
600 c->c_needs_tls_accept = 1;
603 c->c_needs_tls_accept = 0;
607 slap_sasl_open( c, 0 );
608 slap_sasl_external( c, ssf, authid );
610 slapd_add_internal( s, 1 );
611 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
613 backend_connection_init(c);
618 void connection2anonymous( Connection *c )
620 assert( connections != NULL );
624 ber_len_t max = sockbuf_max_incoming;
625 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
628 if ( !BER_BVISNULL( &c->c_authmech ) ) {
629 ch_free(c->c_authmech.bv_val);
631 BER_BVZERO( &c->c_authmech );
633 if ( !BER_BVISNULL( &c->c_dn ) ) {
634 ch_free(c->c_dn.bv_val);
636 BER_BVZERO( &c->c_dn );
638 if ( !BER_BVISNULL( &c->c_ndn ) ) {
639 ch_free(c->c_ndn.bv_val);
641 BER_BVZERO( &c->c_ndn );
643 if ( !BER_BVISNULL( &c->c_sasl_authz_dn ) ) {
644 ber_memfree_x( c->c_sasl_authz_dn.bv_val, NULL );
646 BER_BVZERO( &c->c_sasl_authz_dn );
648 c->c_authz_backend = NULL;
652 connection_destroy( Connection *c )
655 unsigned long connid;
656 const char *close_reason;
659 assert( connections != NULL );
661 assert( c->c_struct_state != SLAP_C_UNUSED );
662 assert( c->c_conn_state != SLAP_C_INVALID );
663 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
664 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
666 assert( c->c_txn == CONN_TXN_INACTIVE );
667 assert( c->c_txn_backend == NULL );
668 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
670 assert( c->c_writewaiter == 0);
672 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
673 connid = c->c_connid;
674 close_reason = c->c_close_reason;
676 ldap_pvt_thread_mutex_lock( &connections_mutex );
677 c->c_struct_state = SLAP_C_PENDING;
678 ldap_pvt_thread_mutex_unlock( &connections_mutex );
680 backend_connection_destroy(c);
685 c->c_activitytime = c->c_starttime = 0;
687 connection2anonymous( c );
688 c->c_listener = NULL;
690 if(c->c_peer_domain.bv_val != NULL) {
691 free(c->c_peer_domain.bv_val);
693 BER_BVZERO( &c->c_peer_domain );
694 if(c->c_peer_name.bv_val != NULL) {
695 free(c->c_peer_name.bv_val);
697 BER_BVZERO( &c->c_peer_name );
699 c->c_sasl_bind_in_progress = 0;
700 if(c->c_sasl_bind_mech.bv_val != NULL) {
701 free(c->c_sasl_bind_mech.bv_val);
703 BER_BVZERO( &c->c_sasl_bind_mech );
705 slap_sasl_close( c );
707 if ( c->c_currentber != NULL ) {
708 ber_free( c->c_currentber, 1 );
709 c->c_currentber = NULL;
714 /* call destructors, then constructors; avoids unnecessary allocation */
715 if ( slapi_plugins_used ) {
716 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
720 c->c_conn_state = SLAP_C_INVALID;
721 c->c_struct_state = SLAP_C_UNUSED;
722 c->c_close_reason = "?"; /* should never be needed */
725 c->c_sb = ber_sockbuf_alloc( );
727 ber_len_t max = sockbuf_max_incoming;
728 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
731 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
733 /* c must be fully reset by this point; when we call slapd_remove
734 * it may get immediately reused by a new connection.
736 if ( sd != AC_SOCKET_INVALID ) {
737 slapd_remove( sd, sb, 1, 0, 0 );
739 if ( close_reason == NULL ) {
743 Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed (%s)\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 /* ITS#4667 this may allow another thread to drop into
835 * connection_resched / connection_close before we
836 * finish, but that's OK.
838 slapd_clr_write( sd, 1 );
839 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
840 ldap_pvt_thread_mutex_lock( &c->c_write_mutex );
841 ldap_pvt_thread_mutex_lock( &c->c_mutex );
842 ldap_pvt_thread_mutex_unlock( &c->c_write_mutex );
844 slapd_clr_write( sd, 1 );
847 } else if( why == NULL && c->c_close_reason == conn_lost_str ) {
848 /* Client closed connection after doing Unbind. */
849 c->c_close_reason = NULL;
854 connection_close( Connection *c )
856 ber_socket_t sd = AC_SOCKET_INVALID;
858 assert( connections != NULL );
861 /* ITS#4667 we may have gotten here twice */
862 if ( c->c_conn_state == SLAP_C_INVALID )
865 assert( c->c_struct_state == SLAP_C_USED );
866 assert( c->c_conn_state == SLAP_C_CLOSING );
868 /* NOTE: c_mutex should be locked by caller */
870 /* NOTE: don't get the file descriptor if not needed */
872 if ( slap_debug & LDAP_DEBUG_TRACE ) {
873 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
875 #endif /* LDAP_DEBUG */
877 if ( !LDAP_STAILQ_EMPTY(&c->c_ops) ||
878 !LDAP_STAILQ_EMPTY(&c->c_pending_ops) )
880 Debug( LDAP_DEBUG_TRACE,
881 "connection_close: deferring conn=%lu sd=%d\n",
882 c->c_connid, sd, 0 );
886 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
887 c->c_connid, sd, 0 );
889 connection_destroy( c );
892 unsigned long connections_nextid(void)
895 assert( connections != NULL );
897 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
901 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
906 Connection* connection_first( ber_socket_t *index )
908 assert( connections != NULL );
909 assert( index != NULL );
911 ldap_pvt_thread_mutex_lock( &connections_mutex );
912 for( *index = 0; *index < dtblsize; (*index)++) {
913 if( connections[*index].c_struct_state != SLAP_C_UNINITIALIZED ) {
917 ldap_pvt_thread_mutex_unlock( &connections_mutex );
919 return connection_next(NULL, index);
922 Connection* connection_next( Connection *c, ber_socket_t *index )
924 assert( connections != NULL );
925 assert( index != NULL );
926 assert( *index <= dtblsize );
928 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
932 ldap_pvt_thread_mutex_lock( &connections_mutex );
933 for(; *index < dtblsize; (*index)++) {
935 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
936 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
944 if( connections[*index].c_struct_state == SLAP_C_USED ) {
945 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
946 c = &connections[(*index)++];
947 if ( ldap_pvt_thread_mutex_trylock( &c->c_mutex )) {
949 ldap_pvt_thread_mutex_unlock( &connections_mutex );
950 ldap_pvt_thread_mutex_lock( &c->c_mutex );
951 ldap_pvt_thread_mutex_lock( &connections_mutex );
952 if ( c->c_struct_state != SLAP_C_USED ) {
953 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
961 c_struct = connections[*index].c_struct_state;
962 if ( c_struct == SLAP_C_PENDING )
964 assert( c_struct == SLAP_C_UNUSED );
965 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
968 ldap_pvt_thread_mutex_unlock( &connections_mutex );
972 void connection_done( Connection *c )
974 assert( connections != NULL );
976 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
980 * connection_activity - handle the request operation op on connection
981 * conn. This routine figures out what kind of operation it is and
982 * calls the appropriate stub to handle it.
986 /* FIXME: returns 0 in case of failure */
987 #define INCR_OP_INITIATED(index) \
989 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
990 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated_[(index)], 1); \
991 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
993 #define INCR_OP_COMPLETED(index) \
995 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
996 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
997 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed_[(index)], 1); \
998 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
1000 #else /* !SLAPD_MONITOR */
1001 #define INCR_OP_INITIATED(index) do { } while (0)
1002 #define INCR_OP_COMPLETED(index) \
1004 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
1005 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
1006 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
1008 #endif /* !SLAPD_MONITOR */
1011 * NOTE: keep in sync with enum in slapd.h
1013 static BI_op_func *opfun[] = {
1028 connection_operation( void *ctx, void *arg_v )
1030 int rc = LDAP_OTHER;
1031 Operation *op = arg_v;
1032 SlapReply rs = {REP_RESULT};
1033 ber_tag_t tag = op->o_tag;
1034 slap_op_t opidx = SLAP_OP_LAST;
1035 Connection *conn = op->o_conn;
1036 void *memctx = NULL;
1037 void *memctx_null = NULL;
1040 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex );
1041 /* FIXME: returns 0 in case of failure */
1042 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated, 1);
1043 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex );
1045 op->o_threadctx = ctx;
1047 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
1048 #endif /* LDAP_DEVEL */
1052 case LDAP_REQ_UNBIND:
1054 case LDAP_REQ_DELETE:
1055 case LDAP_REQ_MODDN:
1056 case LDAP_REQ_MODIFY:
1057 case LDAP_REQ_COMPARE:
1058 case LDAP_REQ_SEARCH:
1059 case LDAP_REQ_ABANDON:
1060 case LDAP_REQ_EXTENDED:
1063 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1064 "conn %lu unknown LDAP request 0x%lx\n",
1065 conn->c_connid, tag, 0 );
1066 op->o_tag = LBER_ERROR;
1067 rs.sr_err = LDAP_PROTOCOL_ERROR;
1068 rs.sr_text = "unknown LDAP request";
1069 send_ldap_disconnect( op, &rs );
1070 rc = SLAPD_DISCONNECT;
1071 goto operations_error;
1074 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
1075 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1076 "error: SASL bind in progress (tag=%ld).\n",
1078 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1079 "SASL bind in progress" );
1080 rc = LDAP_OPERATIONS_ERROR;
1081 goto operations_error;
1085 if (( conn->c_txn == CONN_TXN_SPECIFY ) && (
1086 ( tag == LDAP_REQ_ADD ) ||
1087 ( tag == LDAP_REQ_DELETE ) ||
1088 ( tag == LDAP_REQ_MODIFY ) ||
1089 ( tag == LDAP_REQ_MODRDN )))
1091 /* Disable SLAB allocator for all update operations
1092 issued inside of a transaction */
1093 op->o_tmpmemctx = NULL;
1094 op->o_tmpmfuncs = &ch_mfuncs;
1098 /* We can use Thread-Local storage for most mallocs. We can
1099 * also use TL for ber parsing, but not on Add or Modify.
1102 memsiz = ber_len( op->o_ber ) * 64;
1103 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
1105 memsiz = SLAP_SLAB_SIZE;
1107 memctx = slap_sl_mem_create( memsiz, SLAP_SLAB_STACK, ctx );
1108 op->o_tmpmemctx = memctx;
1109 op->o_tmpmfuncs = &slap_sl_mfuncs;
1110 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1111 /* Note - the ber and its buffer are already allocated from
1112 * regular memory; this only affects subsequent mallocs that
1113 * ber_scanf may invoke.
1115 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1119 opidx = slap_req2op( tag );
1120 assert( opidx != SLAP_OP_LAST );
1121 INCR_OP_INITIATED( opidx );
1122 rc = (*(opfun[opidx]))( op, &rs );
1125 if ( rc == SLAPD_DISCONNECT ) {
1128 } else if ( opidx != SLAP_OP_LAST ) {
1129 /* increment completed operations count
1130 * only if operation was initiated
1131 * and rc != SLAPD_DISCONNECT */
1132 INCR_OP_COMPLETED( opidx );
1135 if ( op->o_cancel == SLAP_CANCEL_REQ ) {
1136 if ( rc == SLAPD_ABANDON ) {
1137 op->o_cancel = SLAP_CANCEL_ACK;
1139 op->o_cancel = LDAP_TOO_LATE;
1143 while ( op->o_cancel != SLAP_CANCEL_NONE &&
1144 op->o_cancel != SLAP_CANCEL_DONE )
1146 ldap_pvt_thread_yield();
1149 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1151 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1153 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1154 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1156 conn->c_n_ops_executing--;
1157 conn->c_n_ops_completed++;
1161 case LDAP_REQ_UNBIND:
1162 /* c_mutex is locked */
1163 connection_closing( conn,
1164 tag == LDAP_REQ_UNBIND ? NULL : "operations error" );
1168 connection_resched( conn );
1169 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1173 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1175 int connection_client_setup(
1177 ldap_pvt_thread_start_t *func,
1183 rc = connection_init( s, (Listener *)&dummy_list, "", "",
1184 CONN_IS_CLIENT, 0, NULL );
1185 if ( rc < 0 ) return -1;
1187 c = connection_get( s );
1188 c->c_clientfunc = func;
1189 c->c_clientarg = arg;
1191 slapd_add_internal( s, 0 );
1192 slapd_set_read( s, 1 );
1193 connection_return( c );
1197 void connection_client_enable(
1200 slapd_set_read( s, 1 );
1203 void connection_client_stop(
1209 /* get (locked) connection */
1210 c = connection_get( s );
1212 assert( c->c_conn_state == SLAP_C_CLIENT );
1214 c->c_listener = NULL;
1215 c->c_conn_state = SLAP_C_INVALID;
1216 c->c_struct_state = SLAP_C_UNUSED;
1217 c->c_close_reason = "?"; /* should never be needed */
1219 c->c_sb = ber_sockbuf_alloc( );
1221 ber_len_t max = sockbuf_max_incoming;
1222 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
1224 slapd_remove( s, sb, 0, 1, 0 );
1226 connection_return( c );
1229 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1231 static int connection_read( ber_socket_t s, conn_readinfo *cri );
1233 static void* connection_read_thread( void* ctx, void* argv )
1236 conn_readinfo cri = { NULL, NULL, NULL, 0 };
1237 ber_socket_t s = (long)argv;
1240 * read incoming LDAP requests. If there is more than one,
1241 * the first one is returned with new_op
1243 if( ( rc = connection_read( s, &cri ) ) < 0 ) {
1244 Debug( LDAP_DEBUG_CONNS, "connection_read(%d) error\n", s, 0, 0 );
1245 return (void*)(long)rc;
1248 /* execute a single queued request in the same thread */
1249 if( cri.op && !cri.nullop ) {
1250 rc = (long)connection_operation( ctx, cri.op );
1251 } else if ( cri.func ) {
1252 rc = (long)cri.func( ctx, cri.arg );
1255 return (void*)(long)rc;
1258 int connection_read_activate( ber_socket_t s )
1263 * suspend reading on this file descriptor until a connection processing
1264 * thread reads data on it. Otherwise the listener thread will repeatedly
1265 * submit the same event on it to the pool.
1267 rc = slapd_clr_read( s, 0 );
1271 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1272 connection_read_thread, (void *)(long)s );
1275 Debug( LDAP_DEBUG_ANY,
1276 "connection_read_activate(%d): submit failed (%d)\n",
1284 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1286 connection_read( ber_socket_t s, conn_readinfo *cri )
1288 int connection_read(ber_socket_t s)
1294 assert( connections != NULL );
1296 /* get (locked) connection */
1297 c = connection_get( s );
1300 Debug( LDAP_DEBUG_ANY,
1301 "connection_read(%ld): no connection!\n",
1309 if( c->c_conn_state == SLAP_C_CLOSING ) {
1310 Debug( LDAP_DEBUG_TRACE,
1311 "connection_read(%d): closing, ignoring input for id=%lu\n",
1312 s, c->c_connid, 0 );
1313 connection_return( c );
1317 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1318 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1319 cri->func = c->c_clientfunc;
1320 cri->arg = c->c_clientarg;
1321 /* read should already be cleared */
1323 slapd_clr_read( s, 0 );
1324 ldap_pvt_thread_pool_submit( &connection_pool,
1325 c->c_clientfunc, c->c_clientarg );
1327 connection_return( c );
1331 Debug( LDAP_DEBUG_TRACE,
1332 "connection_read(%d): checking for input on id=%lu\n",
1333 s, c->c_connid, 0 );
1336 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1337 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1339 Debug( LDAP_DEBUG_TRACE,
1340 "connection_read(%d): TLS accept failure "
1341 "error=%d id=%lu, closing\n",
1342 s, rc, c->c_connid );
1344 c->c_needs_tls_accept = 0;
1345 /* c_mutex is locked */
1346 connection_closing( c, "TLS negotiation failure" );
1347 connection_close( c );
1348 connection_return( c );
1351 } else if ( rc == 0 ) {
1353 struct berval authid = BER_BVNULL;
1355 c->c_needs_tls_accept = 0;
1357 /* we need to let SASL know */
1358 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1360 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1361 if( c->c_tls_ssf > c->c_ssf ) {
1362 c->c_ssf = c->c_tls_ssf;
1365 rc = dnX509peerNormalize( ssl, &authid );
1366 if ( rc != LDAP_SUCCESS ) {
1367 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1368 "unable to get TLS client DN, error=%d id=%lu\n",
1369 s, rc, c->c_connid );
1371 Statslog( LDAP_DEBUG_STATS,
1372 "conn=%lu fd=%d TLS established tls_ssf=%u ssf=%u\n",
1373 c->c_connid, (int) s, c->c_tls_ssf, c->c_ssf, 0 );
1374 slap_sasl_external( c, c->c_tls_ssf, &authid );
1375 if ( authid.bv_val ) free( authid.bv_val );
1378 /* if success and data is ready, fall thru to data input loop */
1379 if( !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1381 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1382 slapd_set_read( s, 1 );
1385 connection_return( c );
1391 #ifdef HAVE_CYRUS_SASL
1392 if ( c->c_sasl_layers ) {
1393 /* If previous layer is not removed yet, give up for now */
1394 if ( !c->c_sasl_sockctx ) {
1395 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1396 slapd_set_read( s, 1 );
1399 connection_return( c );
1403 c->c_sasl_layers = 0;
1405 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1406 if( rc != LDAP_SUCCESS ) {
1407 Debug( LDAP_DEBUG_TRACE,
1408 "connection_read(%d): SASL install error "
1409 "error=%d id=%lu, closing\n",
1410 s, rc, c->c_connid );
1412 /* c_mutex is locked */
1413 connection_closing( c, "SASL layer install failure" );
1414 connection_close( c );
1415 connection_return( c );
1421 #define CONNECTION_INPUT_LOOP 1
1422 /* #define DATA_READY_LOOP 1 */
1425 /* How do we do this without getting into a busy loop ? */
1426 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1427 rc = connection_input( c, cri );
1429 rc = connection_input( c );
1432 #ifdef DATA_READY_LOOP
1433 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1434 #elif CONNECTION_INPUT_LOOP
1441 Debug( LDAP_DEBUG_CONNS,
1442 "connection_read(%d): input error=%d id=%lu, closing.\n",
1443 s, rc, c->c_connid );
1445 /* c_mutex is locked */
1446 connection_closing( c, conn_lost_str );
1447 connection_close( c );
1448 connection_return( c );
1452 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1453 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1454 slapd_set_write( s, 0 );
1457 slapd_set_read( s, 1 );
1459 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1460 slapd_set_read( s, 1 );
1463 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1464 slapd_set_write( s, 1 );
1468 connection_return( c );
1474 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1475 connection_input( Connection *conn , conn_readinfo *cri )
1477 connection_input( Connection *conn )
1486 #ifdef LDAP_CONNECTIONLESS
1492 if ( conn->c_currentber == NULL &&
1493 ( conn->c_currentber = ber_alloc()) == NULL )
1495 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1501 #ifdef LDAP_CONNECTIONLESS
1502 if ( conn->c_is_udp ) {
1503 char peername[sizeof("IP=255.255.255.255:65336")];
1505 len = ber_int_sb_read(conn->c_sb, &peeraddr, sizeof(struct sockaddr));
1506 if (len != sizeof(struct sockaddr)) return 1;
1508 sprintf( peername, "IP=%s:%d",
1509 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1510 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1511 Statslog( LDAP_DEBUG_STATS,
1512 "conn=%lu UDP request from %s (%s) accepted.\n",
1513 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1517 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1518 if ( tag != LDAP_TAG_MESSAGE ) {
1519 int err = sock_errno();
1522 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1524 Debug( LDAP_DEBUG_TRACE,
1525 "ber_get_next on fd %d failed errno=%d (%s)\n",
1526 sd, err, sock_errstr(err) );
1527 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1528 /* log, close and send error */
1529 ber_free( conn->c_currentber, 1 );
1530 conn->c_currentber = NULL;
1537 ber = conn->c_currentber;
1538 conn->c_currentber = NULL;
1540 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1541 /* log, close and send error */
1542 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0, 0 );
1547 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1548 /* log, close and send error */
1549 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0, 0 );
1555 #ifdef LDAP_CONNECTIONLESS
1556 if( conn->c_is_udp ) {
1557 if( tag == LBER_OCTETSTRING ) {
1558 ber_get_stringa( ber, &cdn );
1559 tag = ber_peek_tag(ber, &len);
1561 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1562 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1569 if(tag == LDAP_REQ_BIND) {
1570 /* immediately abandon all existing operations upon BIND */
1571 connection_abandon( conn );
1574 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1577 /* clear state if the connection is being reused from inactive */
1578 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1579 memset( &conn->c_pagedresults_state, 0,
1580 sizeof( conn->c_pagedresults_state ) );
1583 op->o_res_ber = NULL;
1585 #ifdef LDAP_CONNECTIONLESS
1586 if (conn->c_is_udp) {
1588 ber_str2bv( cdn, 0, 1, &op->o_dn );
1589 op->o_protocol = LDAP_VERSION2;
1591 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1592 if (op->o_res_ber == NULL) return 1;
1594 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1595 sizeof(struct sockaddr), 0 );
1597 if (rc != sizeof(struct sockaddr)) {
1598 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1602 if (op->o_protocol == LDAP_VERSION2) {
1603 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1605 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1610 #endif /* LDAP_CONNECTIONLESS */
1614 /* Don't process requests when the conn is in the middle of a
1615 * Bind, or if it's closing. Also, don't let any single conn
1616 * use up all the available threads, and don't execute if we're
1617 * currently blocked on output. And don't execute if there are
1618 * already pending ops, let them go first. Abandon operations
1619 * get exceptions to some, but not all, cases.
1623 /* Abandon and Unbind are exempt from these checks */
1624 if (conn->c_conn_state == SLAP_C_CLOSING) {
1627 } else if (conn->c_writewaiter) {
1628 defer = "awaiting write";
1630 } else if (conn->c_n_ops_pending) {
1631 defer = "pending operations";
1635 case LDAP_REQ_ABANDON:
1636 /* Unbind is exempt from these checks */
1637 if (conn->c_n_ops_executing >= connection_pool_max/2) {
1638 defer = "too many executing";
1640 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1645 case LDAP_REQ_UNBIND:
1650 int max = conn->c_dn.bv_len
1651 ? slap_conn_max_pending_auth
1652 : slap_conn_max_pending;
1654 Debug( LDAP_DEBUG_ANY,
1655 "connection_input: conn=%lu deferring operation: %s\n",
1656 conn->c_connid, defer, 0 );
1657 conn->c_n_ops_pending++;
1658 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1659 rc = ( conn->c_n_ops_pending > max ) ? -1 : 0;
1662 conn->c_n_ops_executing++;
1664 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1666 * The first op will be processed in the same thread context,
1667 * as long as there is only one op total.
1668 * Subsequent ops will be submitted to the pool by
1669 * calling connection_op_activate()
1671 if ( cri->op == NULL ) {
1672 /* the first incoming request */
1673 connection_op_queue( op );
1676 if ( !cri->nullop ) {
1678 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1679 connection_operation, (void *) cri->op );
1681 connection_op_activate( op );
1684 connection_op_activate( op );
1689 if ( conn->c_struct_state != SLAP_C_USED ) {
1690 /* connection must have got closed underneath us */
1695 assert( conn->c_struct_state == SLAP_C_USED );
1700 connection_resched( Connection *conn )
1704 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1706 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1708 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1709 "attempting closing conn=%lu sd=%d\n",
1710 conn->c_connid, sd, 0 );
1711 connection_close( conn );
1715 if( conn->c_conn_state != SLAP_C_ACTIVE || conn->c_writewaiter ) {
1716 /* other states need different handling */
1720 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1721 if ( conn->c_n_ops_executing > connection_pool_max/2 ) break;
1723 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1724 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1726 /* pending operations should not be marked for abandonment */
1727 assert(!op->o_abandon);
1729 conn->c_n_ops_pending--;
1730 conn->c_n_ops_executing++;
1732 connection_op_activate( op );
1734 if ( conn->c_conn_state == SLAP_C_BINDING ) break;
1740 connection_init_log_prefix( Operation *op )
1742 if ( op->o_connid == (unsigned long)(-1) ) {
1743 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1744 "conn=-1 op=%lu", op->o_opid );
1747 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1748 "conn=%lu op=%lu", op->o_connid, op->o_opid );
1752 static int connection_bind_cleanup_cb( Operation *op, SlapReply *rs )
1754 op->o_conn->c_sasl_bindop = NULL;
1756 ch_free( op->o_callback );
1757 op->o_callback = NULL;
1759 return SLAP_CB_CONTINUE;
1762 static int connection_bind_cb( Operation *op, SlapReply *rs )
1764 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1765 if ( op->o_conn->c_conn_state == SLAP_C_BINDING )
1766 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1767 op->o_conn->c_sasl_bind_in_progress =
1768 ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS );
1770 /* Moved here from bind.c due to ITS#4158 */
1771 op->o_conn->c_sasl_bindop = NULL;
1772 if ( op->orb_method == LDAP_AUTH_SASL ) {
1773 if( rs->sr_err == LDAP_SUCCESS ) {
1774 ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
1775 if( !BER_BVISEMPTY( &op->orb_edn ) ) {
1776 /* edn is always normalized already */
1777 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
1779 op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
1780 BER_BVZERO( &op->orb_edn );
1781 op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
1782 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1784 op->o_conn->c_sasl_ssf = op->orb_ssf;
1785 if( op->orb_ssf > op->o_conn->c_ssf ) {
1786 op->o_conn->c_ssf = op->orb_ssf;
1789 if( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
1790 ber_len_t max = sockbuf_max_incoming_auth;
1791 ber_sockbuf_ctrl( op->o_conn->c_sb,
1792 LBER_SB_OPT_SET_MAX_INCOMING, &max );
1795 /* log authorization identity */
1796 Statslog( LDAP_DEBUG_STATS,
1797 "%s BIND dn=\"%s\" mech=%s ssf=%d\n",
1799 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1800 op->o_conn->c_authmech.bv_val, op->orb_ssf, 0 );
1802 Debug( LDAP_DEBUG_TRACE,
1803 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
1804 op->o_conn->c_authmech.bv_val,
1805 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1808 } else if ( rs->sr_err != LDAP_SASL_BIND_IN_PROGRESS ) {
1809 if ( !BER_BVISNULL( &op->o_conn->c_sasl_bind_mech ) ) {
1810 free( op->o_conn->c_sasl_bind_mech.bv_val );
1811 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1815 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1817 ch_free( op->o_callback );
1818 op->o_callback = NULL;
1820 return SLAP_CB_CONTINUE;
1823 static void connection_op_queue( Operation *op )
1825 ber_tag_t tag = op->o_tag;
1827 if (tag == LDAP_REQ_BIND) {
1828 slap_callback *sc = ch_calloc( 1, sizeof( slap_callback ));
1829 sc->sc_response = connection_bind_cb;
1830 sc->sc_cleanup = connection_bind_cleanup_cb;
1831 sc->sc_next = op->o_callback;
1832 op->o_callback = sc;
1833 op->o_conn->c_conn_state = SLAP_C_BINDING;
1836 if (!op->o_dn.bv_len) {
1837 op->o_authz = op->o_conn->c_authz;
1838 if ( BER_BVISNULL( &op->o_conn->c_sasl_authz_dn )) {
1839 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1840 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1842 ber_dupbv( &op->o_dn, &op->o_conn->c_sasl_authz_dn );
1843 ber_dupbv( &op->o_ndn, &op->o_conn->c_sasl_authz_dn );
1847 op->o_authtype = op->o_conn->c_authtype;
1848 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1850 if (!op->o_protocol) {
1851 op->o_protocol = op->o_conn->c_protocol
1852 ? op->o_conn->c_protocol : LDAP_VERSION3;
1855 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE &&
1856 op->o_protocol > LDAP_VERSION2)
1858 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1861 op->o_connid = op->o_conn->c_connid;
1862 connection_init_log_prefix( op );
1864 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1867 static int connection_op_activate( Operation *op )
1871 connection_op_queue( op );
1873 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1874 connection_operation, (void *) op );
1877 Debug( LDAP_DEBUG_ANY,
1878 "connection_op_activate: submit failed (%d) for conn=%lu\n",
1879 rc, op->o_connid, 0 );
1880 /* should move op to pending list */
1886 int connection_write(ber_socket_t s)
1891 assert( connections != NULL );
1893 slapd_clr_write( s, 0 );
1895 c = connection_get( s );
1897 Debug( LDAP_DEBUG_ANY,
1898 "connection_write(%ld): no connection!\n",
1905 Debug( LDAP_DEBUG_TRACE,
1906 "connection_write(%d): waking output for id=%lu\n",
1907 s, c->c_connid, 0 );
1908 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1910 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1911 slapd_set_read( s, 1 );
1913 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1914 slapd_set_write( s, 1 );
1917 /* If there are ops pending because of a writewaiter,
1920 while ((op = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
1921 if ( !c->c_writewaiter ) break;
1922 if ( c->c_n_ops_executing > connection_pool_max/2 ) break;
1924 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
1925 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1927 /* pending operations should not be marked for abandonment */
1928 assert(!op->o_abandon);
1930 c->c_n_ops_pending--;
1931 c->c_n_ops_executing++;
1933 connection_op_activate( op );
1938 connection_return( c );
1943 connection_fake_init(
1948 conn->c_connid = -1;
1949 conn->c_send_ldap_result = slap_send_ldap_result;
1950 conn->c_send_search_entry = slap_send_search_entry;
1951 conn->c_send_search_reference = slap_send_search_reference;
1952 conn->c_listener = (Listener *)&dummy_list;
1953 conn->c_peer_domain = slap_empty_bv;
1954 conn->c_peer_name = slap_empty_bv;
1956 memset(op, 0, OPERATION_BUFFER_SIZE);
1957 op->o_hdr = (Opheader *)(op+1);
1958 op->o_controls = (void **)(op->o_hdr+1);
1959 /* set memory context */
1960 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx);
1961 op->o_tmpmfuncs = &slap_sl_mfuncs;
1962 op->o_threadctx = ctx;
1964 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
1965 #endif /* LDAP_DEVEL */
1968 op->o_connid = op->o_conn->c_connid;
1969 connection_init_log_prefix( op );
1972 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, conn );
1973 slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
1974 #endif /* LDAP_SLAPI */
1976 slap_op_time( &op->o_time, &op->o_tincr );
1980 connection_assign_nextid( Connection *conn )
1982 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
1983 conn->c_connid = conn_nextid++;
1984 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );