2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2005 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.
31 #include <ac/socket.h>
33 #include <ac/string.h>
35 #include <ac/unistd.h>
41 #include "slapi/slapi.h"
44 /* protected by connections_mutex */
45 static ldap_pvt_thread_mutex_t connections_mutex;
46 static Connection *connections = NULL;
48 static ldap_pvt_thread_mutex_t conn_nextid_mutex;
49 static unsigned long conn_nextid = 0;
51 /* structure state (protected by connections_mutex) */
52 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
53 #define SLAP_C_UNUSED 0x01
54 #define SLAP_C_USED 0x02
56 /* connection state (protected by c_mutex ) */
57 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
58 #define SLAP_C_INACTIVE 0x01 /* zero threads */
59 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
60 #define SLAP_C_BINDING 0x03 /* binding */
61 #define SLAP_C_CLOSING 0x04 /* closing */
62 #define SLAP_C_CLIENT 0x05 /* outbound client conn */
65 connection_state2str( int state )
68 case SLAP_C_INVALID: return "!";
69 case SLAP_C_INACTIVE: return "|";
70 case SLAP_C_ACTIVE: return "";
71 case SLAP_C_BINDING: return "B";
72 case SLAP_C_CLOSING: return "C";
73 case SLAP_C_CLIENT: return "L";
79 static Connection* connection_get( ber_socket_t s );
81 static int connection_input( Connection *c );
82 static void connection_close( Connection *c );
84 static int connection_op_activate( Operation *op );
85 static int connection_resched( Connection *conn );
86 static void connection_abandon( Connection *conn );
87 static void connection_destroy( Connection *c );
89 static ldap_pvt_thread_start_t connection_operation;
92 * Initialize connection management infrastructure.
94 int connections_init(void)
98 assert( connections == NULL );
100 if( connections != NULL) {
101 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
106 /* should check return of every call */
107 ldap_pvt_thread_mutex_init( &connections_mutex );
108 ldap_pvt_thread_mutex_init( &conn_nextid_mutex );
110 connections = (Connection *) ch_calloc( dtblsize, sizeof(Connection) );
112 if( connections == NULL ) {
113 Debug( LDAP_DEBUG_ANY,
114 "connections_init: allocation (%d*%ld) of connection array failed\n",
115 dtblsize, (long) sizeof(Connection), 0 );
119 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
120 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
122 for (i=0; i<dtblsize; i++) connections[i].c_conn_idx = i;
125 * per entry initialization of the Connection array initialization
126 * will be done by connection_init()
133 * Destroy connection management infrastructure.
135 int connections_destroy(void)
139 /* should check return of every call */
141 if( connections == NULL) {
142 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
147 for ( i = 0; i < dtblsize; i++ ) {
148 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
149 ber_sockbuf_free( connections[i].c_sb );
150 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
151 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
152 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
154 if ( slapi_plugins_used ) {
155 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION, &connections[i] );
164 ldap_pvt_thread_mutex_destroy( &connections_mutex );
165 ldap_pvt_thread_mutex_destroy( &conn_nextid_mutex );
170 * shutdown all connections
172 int connections_shutdown(void)
176 ldap_pvt_thread_mutex_lock( &connections_mutex );
178 for ( i = 0; i < dtblsize; i++ ) {
179 if( connections[i].c_struct_state != SLAP_C_USED ) {
182 /* give persistent clients a chance to cleanup */
183 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
184 ldap_pvt_thread_pool_submit( &connection_pool,
185 connections[i].c_clientfunc, connections[i].c_clientarg );
189 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
191 /* connections_mutex and c_mutex are locked */
192 connection_closing( &connections[i] );
193 connection_close( &connections[i] );
195 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
198 ldap_pvt_thread_mutex_unlock( &connections_mutex );
204 * Timeout idle connections.
206 int connections_timeout_idle(time_t now)
212 for( c = connection_first( &connindex );
214 c = connection_next( c, &connindex ) )
216 /* Don't timeout a slow-running request or a persistent
217 * outbound connection */
218 if( c->c_n_ops_executing ||
219 c->c_conn_state == SLAP_C_CLIENT ) continue;
221 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
223 connection_closing( c );
224 connection_close( c );
228 connection_done( c );
233 static Connection* connection_get( ber_socket_t s )
235 /* connections_mutex should be locked by caller */
239 Debug( LDAP_DEBUG_ARGS,
240 "connection_get(%ld)\n",
243 assert( connections != NULL );
245 if(s == AC_SOCKET_INVALID) {
252 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
259 for(i=0; i<dtblsize; i++) {
260 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
261 assert( connections[i].c_conn_state == SLAP_C_INVALID );
262 assert( connections[i].c_sb == 0 );
266 ber_sockbuf_ctrl( connections[i].c_sb,
267 LBER_SB_OPT_GET_FD, &sd );
269 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
270 assert( connections[i].c_conn_state == SLAP_C_INVALID );
271 assert( sd == AC_SOCKET_INVALID );
275 /* state can actually change from used -> unused by resched,
276 * so don't assert details here.
290 ldap_pvt_thread_mutex_lock( &c->c_mutex );
292 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
293 if( c->c_struct_state != SLAP_C_USED ) {
294 /* connection must have been closed due to resched */
296 assert( c->c_conn_state == SLAP_C_INVALID );
297 assert( sd == AC_SOCKET_INVALID );
299 Debug( LDAP_DEBUG_TRACE,
300 "connection_get(%d): connection not used\n",
303 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
307 Debug( LDAP_DEBUG_TRACE,
308 "connection_get(%d): got connid=%lu\n",
313 assert( c->c_struct_state == SLAP_C_USED );
314 assert( c->c_conn_state != SLAP_C_INVALID );
315 assert( sd != AC_SOCKET_INVALID );
317 #ifndef SLAPD_MONITOR
318 if ( global_idletimeout > 0 )
319 #endif /* ! SLAPD_MONITOR */
321 c->c_activitytime = slap_get_time();
328 static void connection_return( Connection *c )
330 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
333 long connection_init(
337 const char* peername,
340 struct berval *authid )
345 assert( connections != NULL );
347 assert( listener != NULL );
348 assert( dnsname != NULL );
349 assert( peername != NULL );
352 assert( flags != CONN_IS_TLS );
355 if( s == AC_SOCKET_INVALID ) {
356 Debug( LDAP_DEBUG_ANY,
357 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
363 assert( s < dtblsize );
366 ldap_pvt_thread_mutex_lock( &connections_mutex );
376 for( i=0; i < dtblsize; i++) {
379 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
380 assert( connections[i].c_sb == 0 );
385 sd = AC_SOCKET_INVALID;
386 if (connections[i].c_sb != NULL) {
387 ber_sockbuf_ctrl( connections[i].c_sb,
388 LBER_SB_OPT_GET_FD, &sd );
391 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
392 assert( sd == AC_SOCKET_INVALID );
397 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
401 assert( connections[i].c_struct_state == SLAP_C_USED );
402 assert( connections[i].c_conn_state != SLAP_C_INVALID );
403 assert( sd != AC_SOCKET_INVALID );
407 Debug( LDAP_DEBUG_ANY,
408 "connection_init(%d): connection table full "
409 "(%d/%d)\n", s, i, dtblsize);
410 ldap_pvt_thread_mutex_unlock( &connections_mutex );
418 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
419 c->c_send_ldap_result = slap_send_ldap_result;
420 c->c_send_search_entry = slap_send_search_entry;
421 c->c_send_search_reference = slap_send_search_reference;
422 c->c_send_ldap_extended = slap_send_ldap_extended;
423 #ifdef LDAP_RES_INTERMEDIATE
424 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
427 BER_BVZERO( &c->c_authmech );
428 BER_BVZERO( &c->c_dn );
429 BER_BVZERO( &c->c_ndn );
431 c->c_listener = NULL;
432 BER_BVZERO( &c->c_peer_domain );
433 BER_BVZERO( &c->c_peer_name );
435 LDAP_STAILQ_INIT(&c->c_ops);
436 LDAP_STAILQ_INIT(&c->c_pending_ops);
438 BER_BVZERO( &c->c_sasl_bind_mech );
440 c->c_sasl_authctx = NULL;
441 c->c_sasl_sockctx = NULL;
442 c->c_sasl_extra = NULL;
443 c->c_sasl_bindop = NULL;
445 c->c_sb = ber_sockbuf_alloc( );
448 ber_len_t max = sockbuf_max_incoming;
449 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
452 c->c_currentber = NULL;
454 /* should check status of thread calls */
455 ldap_pvt_thread_mutex_init( &c->c_mutex );
456 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
457 ldap_pvt_thread_cond_init( &c->c_write_cv );
460 if ( slapi_plugins_used ) {
461 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
465 c->c_struct_state = SLAP_C_UNUSED;
468 ldap_pvt_thread_mutex_lock( &c->c_mutex );
470 assert( c->c_struct_state == SLAP_C_UNUSED );
471 assert( BER_BVISNULL( &c->c_authmech ) );
472 assert( BER_BVISNULL( &c->c_dn ) );
473 assert( BER_BVISNULL( &c->c_ndn ) );
474 assert( c->c_listener == NULL );
475 assert( BER_BVISNULL( &c->c_peer_domain ) );
476 assert( BER_BVISNULL( &c->c_peer_name ) );
477 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
478 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
479 assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
480 assert( c->c_sasl_done == 0 );
481 assert( c->c_sasl_authctx == NULL );
482 assert( c->c_sasl_sockctx == NULL );
483 assert( c->c_sasl_extra == NULL );
484 assert( c->c_sasl_bindop == NULL );
485 assert( c->c_currentber == NULL );
486 assert( c->c_writewaiter == 0);
488 c->c_listener = listener;
490 if ( flags == CONN_IS_CLIENT ) {
491 c->c_conn_state = SLAP_C_CLIENT;
492 c->c_struct_state = SLAP_C_USED;
493 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &s );
494 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
495 ldap_pvt_thread_mutex_unlock( &connections_mutex );
500 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
501 ber_str2bv( peername, 0, 1, &c->c_peer_name );
503 c->c_n_ops_received = 0;
504 c->c_n_ops_executing = 0;
505 c->c_n_ops_pending = 0;
506 c->c_n_ops_completed = 0;
512 /* set to zero until bind, implies LDAP_VERSION3 */
515 #ifndef SLAPD_MONITOR
516 if ( global_idletimeout > 0 )
517 #endif /* ! SLAPD_MONITOR */
519 c->c_activitytime = c->c_starttime = slap_get_time();
522 #ifdef LDAP_CONNECTIONLESS
524 if( flags == CONN_IS_UDP ) {
527 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
528 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
530 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
531 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
532 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
533 LBER_SBIOD_LEVEL_PROVIDER, NULL );
538 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
539 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
541 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
542 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
546 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
547 INT_MAX, (void*)"ldap_" );
550 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
551 c /* non-NULL */ ) < 0 )
553 Debug( LDAP_DEBUG_ANY,
554 "connection_init(%d, %s): set nonblocking failed\n",
555 s, c->c_peer_name.bv_val, 0 );
558 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
559 id = c->c_connid = conn_nextid++;
560 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
562 c->c_conn_state = SLAP_C_INACTIVE;
563 c->c_struct_state = SLAP_C_USED;
565 c->c_ssf = c->c_transport_ssf = ssf;
569 if ( flags == CONN_IS_TLS ) {
571 c->c_needs_tls_accept = 1;
574 c->c_needs_tls_accept = 0;
578 slap_sasl_open( c, 0 );
579 slap_sasl_external( c, ssf, authid );
581 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
582 ldap_pvt_thread_mutex_unlock( &connections_mutex );
584 backend_connection_init(c);
589 void connection2anonymous( Connection *c )
591 assert( connections != NULL );
595 ber_len_t max = sockbuf_max_incoming;
596 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
599 if(c->c_authmech.bv_val != NULL ) {
600 free(c->c_authmech.bv_val);
602 BER_BVZERO( &c->c_authmech );
604 if(c->c_dn.bv_val != NULL) {
605 free(c->c_dn.bv_val);
607 BER_BVZERO( &c->c_dn );
608 if(c->c_ndn.bv_val != NULL) {
609 free(c->c_ndn.bv_val);
611 BER_BVZERO( &c->c_ndn );
613 c->c_authz_backend = NULL;
617 connection_destroy( Connection *c )
619 /* note: connections_mutex should be locked by caller */
621 unsigned long connid;
623 assert( connections != NULL );
625 assert( c->c_struct_state != SLAP_C_UNUSED );
626 assert( c->c_conn_state != SLAP_C_INVALID );
627 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
628 assert( c->c_writewaiter == 0);
630 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
631 connid = c->c_connid;
633 backend_connection_destroy(c);
638 c->c_activitytime = c->c_starttime = 0;
640 connection2anonymous( c );
641 c->c_listener = NULL;
643 if(c->c_peer_domain.bv_val != NULL) {
644 free(c->c_peer_domain.bv_val);
646 BER_BVZERO( &c->c_peer_domain );
647 if(c->c_peer_name.bv_val != NULL) {
648 free(c->c_peer_name.bv_val);
650 BER_BVZERO( &c->c_peer_name );
652 c->c_sasl_bind_in_progress = 0;
653 if(c->c_sasl_bind_mech.bv_val != NULL) {
654 free(c->c_sasl_bind_mech.bv_val);
656 BER_BVZERO( &c->c_sasl_bind_mech );
658 slap_sasl_close( c );
660 if ( c->c_currentber != NULL ) {
661 ber_free( c->c_currentber, 1 );
662 c->c_currentber = NULL;
665 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
666 if ( sd != AC_SOCKET_INVALID ) {
667 slapd_remove( sd, 1, 0 );
669 Statslog( LDAP_DEBUG_STATS,
670 "conn=%lu fd=%ld closed\n",
671 connid, (long) sd, 0, 0, 0 );
674 ber_sockbuf_free( c->c_sb );
676 c->c_sb = ber_sockbuf_alloc( );
679 ber_len_t max = sockbuf_max_incoming;
680 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
683 c->c_conn_state = SLAP_C_INVALID;
684 c->c_struct_state = SLAP_C_UNUSED;
687 /* call destructors, then constructors; avoids unnecessary allocation */
688 if ( slapi_plugins_used ) {
689 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
694 int connection_state_closing( Connection *c )
696 /* c_mutex must be locked by caller */
700 assert( c->c_struct_state == SLAP_C_USED );
702 state = c->c_conn_state;
704 assert( state != SLAP_C_INVALID );
706 return state == SLAP_C_CLOSING;
709 static void connection_abandon( Connection *c )
711 /* c_mutex must be locked by caller */
713 Operation *o, *next, op = {0};
719 op.o_connid = c->c_connid;
720 op.o_tag = LDAP_REQ_ABANDON;
721 for ( o = LDAP_STAILQ_FIRST( &c->c_ops ); o; o=next ) {
722 next = LDAP_STAILQ_NEXT( o, o_next );
723 op.orn_msgid = o->o_msgid;
725 op.o_bd = frontendDB;
726 frontendDB->be_abandon( &op, &rs );
729 /* remove pending operations */
730 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
731 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
732 LDAP_STAILQ_NEXT(o, o_next) = NULL;
737 void connection_closing( Connection *c )
739 assert( connections != NULL );
741 assert( c->c_struct_state == SLAP_C_USED );
742 assert( c->c_conn_state != SLAP_C_INVALID );
744 /* c_mutex must be locked by caller */
746 if( c->c_conn_state != SLAP_C_CLOSING ) {
749 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
750 Debug( LDAP_DEBUG_TRACE,
751 "connection_closing: readying conn=%lu sd=%d for close\n",
752 c->c_connid, sd, 0 );
753 /* update state to closing */
754 c->c_conn_state = SLAP_C_CLOSING;
756 /* don't listen on this port anymore */
757 slapd_clr_read( sd, 1 );
759 /* abandon active operations */
760 connection_abandon( c );
762 /* wake write blocked operations */
763 slapd_clr_write( sd, 1 );
764 ldap_pvt_thread_cond_signal( &c->c_write_cv );
768 static void connection_close( Connection *c )
772 assert( connections != NULL );
774 assert( c->c_struct_state == SLAP_C_USED );
775 assert( c->c_conn_state == SLAP_C_CLOSING );
777 /* note: connections_mutex and c_mutex should be locked by caller */
779 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
780 if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
781 Debug( LDAP_DEBUG_TRACE,
782 "connection_close: deferring conn=%lu sd=%d\n",
783 c->c_connid, sd, 0 );
787 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
788 c->c_connid, sd, 0 );
789 connection_destroy( c );
792 unsigned long connections_nextid(void)
795 assert( connections != NULL );
797 ldap_pvt_thread_mutex_lock( &connections_mutex );
801 ldap_pvt_thread_mutex_unlock( &connections_mutex );
806 Connection* connection_first( ber_socket_t *index )
808 assert( connections != NULL );
809 assert( index != NULL );
811 ldap_pvt_thread_mutex_lock( &connections_mutex );
815 return connection_next(NULL, index);
818 Connection* connection_next( Connection *c, ber_socket_t *index )
820 assert( connections != NULL );
821 assert( index != NULL );
822 assert( *index <= dtblsize );
825 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
830 for(; *index < dtblsize; (*index)++) {
831 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
832 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
840 if( connections[*index].c_struct_state == SLAP_C_USED ) {
841 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
842 c = &connections[(*index)++];
846 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
847 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
851 ldap_pvt_thread_mutex_lock( &c->c_mutex );
857 void connection_done( Connection *c )
859 assert( connections != NULL );
862 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
865 ldap_pvt_thread_mutex_unlock( &connections_mutex );
869 * connection_activity - handle the request operation op on connection
870 * conn. This routine figures out what kind of operation it is and
871 * calls the appropriate stub to handle it.
875 /* FIXME: returns 0 in case of failure */
876 #define INCR_OP_INITIATED(index) \
878 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
879 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated_[(index)], 1); \
880 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
882 #define INCR_OP_COMPLETED(index) \
884 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
885 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
886 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed_[(index)], 1); \
887 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
889 #else /* !SLAPD_MONITOR */
890 #define INCR_OP_INITIATED(index)
891 #define INCR_OP_COMPLETED(index) \
893 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
894 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
895 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
897 #endif /* !SLAPD_MONITOR */
900 * NOTE: keep in sync with enum in slapd.h
902 static int (*opfun[])( Operation *op, SlapReply *rs ) = {
917 connection_operation( void *ctx, void *arg_v )
920 Operation *op = arg_v;
921 SlapReply rs = {REP_RESULT};
922 ber_tag_t tag = op->o_tag;
924 Connection *conn = op->o_conn;
926 void *memctx_null = NULL;
929 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex );
930 /* FIXME: returns 0 in case of failure */
931 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated, 1);
932 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex );
934 op->o_threadctx = ctx;
938 case LDAP_REQ_UNBIND:
940 case LDAP_REQ_DELETE:
942 case LDAP_REQ_MODIFY:
943 case LDAP_REQ_COMPARE:
944 case LDAP_REQ_SEARCH:
945 case LDAP_REQ_ABANDON:
946 case LDAP_REQ_EXTENDED:
949 Debug( LDAP_DEBUG_ANY, "connection_operation: "
950 "conn %lu unknown LDAP request 0x%lx\n",
951 conn->c_connid, tag, 0 );
952 op->o_tag = LBER_ERROR;
953 rs.sr_err = LDAP_PROTOCOL_ERROR;
954 rs.sr_text = "unknown LDAP request";
955 send_ldap_disconnect( op, &rs );
956 rc = SLAPD_DISCONNECT;
957 goto operations_error;
960 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
961 Debug( LDAP_DEBUG_ANY, "connection_operation: "
962 "error: SASL bind in progress (tag=%ld).\n",
964 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
965 "SASL bind in progress" );
966 rc = LDAP_OPERATIONS_ERROR;
967 goto operations_error;
970 /* We can use Thread-Local storage for most mallocs. We can
971 * also use TL for ber parsing, but not on Add or Modify.
974 memsiz = ber_len( op->o_ber ) * 64;
975 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
977 memsiz = SLAP_SLAB_SIZE;
979 memctx = slap_sl_mem_create( memsiz, SLAP_SLAB_STACK, ctx );
980 op->o_tmpmemctx = memctx;
981 op->o_tmpmfuncs = &slap_sl_mfuncs;
982 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
983 /* Note - the ber and its buffer are already allocated from
984 * regular memory; this only affects subsequent mallocs that
985 * ber_scanf may invoke.
987 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
992 opidx = SLAP_OP_BIND;
995 case LDAP_REQ_UNBIND:
996 opidx = SLAP_OP_UNBIND;
1000 opidx = SLAP_OP_ADD;
1003 case LDAP_REQ_DELETE:
1004 opidx = SLAP_OP_DELETE;
1007 case LDAP_REQ_MODRDN:
1008 opidx = SLAP_OP_MODRDN;
1011 case LDAP_REQ_MODIFY:
1012 opidx = SLAP_OP_MODIFY;
1015 case LDAP_REQ_COMPARE:
1016 opidx = SLAP_OP_COMPARE;
1019 case LDAP_REQ_SEARCH:
1020 opidx = SLAP_OP_SEARCH;
1023 case LDAP_REQ_ABANDON:
1024 opidx = SLAP_OP_ABANDON;
1027 case LDAP_REQ_EXTENDED:
1028 opidx = SLAP_OP_EXTENDED;
1036 assert( opidx > -1 );
1037 INCR_OP_INITIATED( opidx );
1038 rc = (*(opfun[opidx]))( op, &rs );
1041 if ( rc == SLAPD_DISCONNECT ) {
1044 } else if ( opidx > -1 ) {
1045 /* increment completed operations count
1046 * only if operation was initiated
1047 * and rc != SLAPD_DISCONNECT */
1048 INCR_OP_COMPLETED( opidx );
1051 if ( op->o_cancel == SLAP_CANCEL_REQ ) {
1052 op->o_cancel = LDAP_TOO_LATE;
1054 while ( op->o_cancel != SLAP_CANCEL_NONE &&
1055 op->o_cancel != SLAP_CANCEL_DONE )
1057 ldap_pvt_thread_yield();
1060 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1062 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1064 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1065 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1067 conn->c_n_ops_executing--;
1068 conn->c_n_ops_completed++;
1072 case LDAP_REQ_UNBIND:
1073 /* c_mutex is locked */
1074 connection_closing( conn );
1078 conn->c_sasl_bind_in_progress =
1079 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
1081 if( conn->c_conn_state == SLAP_C_BINDING) {
1082 conn->c_conn_state = SLAP_C_ACTIVE;
1086 connection_resched( conn );
1087 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1091 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1093 int connection_client_setup(
1095 ldap_pvt_thread_start_t *func,
1101 rc = connection_init( s, (Listener *)&dummy_list, "", "",
1102 CONN_IS_CLIENT, 0, NULL );
1103 if ( rc < 0 ) return -1;
1105 c = connection_get( s );
1106 c->c_clientfunc = func;
1107 c->c_clientarg = arg;
1108 connection_return( c );
1109 slapd_add_internal( s, 0 );
1110 slapd_set_read( s, 1 );
1114 void connection_client_enable(
1117 slapd_set_read( s, 1 );
1120 void connection_client_stop(
1125 /* get (locked) connection */
1126 c = connection_get( s );
1128 assert( c->c_conn_state == SLAP_C_CLIENT );
1130 c->c_listener = NULL;
1131 c->c_conn_state = SLAP_C_INVALID;
1132 c->c_struct_state = SLAP_C_UNUSED;
1133 connection_return( c );
1134 slapd_remove( s, 0, 1 );
1137 int connection_read(ber_socket_t s)
1142 assert( connections != NULL );
1144 ldap_pvt_thread_mutex_lock( &connections_mutex );
1146 /* get (locked) connection */
1147 c = connection_get( s );
1150 Debug( LDAP_DEBUG_ANY,
1151 "connection_read(%ld): no connection!\n",
1153 slapd_remove(s, 1, 0);
1155 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1161 if( c->c_conn_state == SLAP_C_CLOSING ) {
1162 Debug( LDAP_DEBUG_TRACE,
1163 "connection_read(%d): closing, ignoring input for id=%lu\n",
1164 s, c->c_connid, 0 );
1165 connection_return( c );
1166 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1170 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1171 slapd_clr_read( s, 0 );
1172 ldap_pvt_thread_pool_submit( &connection_pool,
1173 c->c_clientfunc, c->c_clientarg );
1174 connection_return( c );
1175 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1179 Debug( LDAP_DEBUG_TRACE,
1180 "connection_read(%d): checking for input on id=%lu\n",
1181 s, c->c_connid, 0 );
1184 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1185 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1187 #if 0 /* required by next #if 0 */
1192 Debug( LDAP_DEBUG_TRACE,
1193 "connection_read(%d): TLS accept error "
1194 "error=%d id=%lu, closing\n",
1195 s, rc, c->c_connid );
1196 c->c_needs_tls_accept = 0;
1197 /* connections_mutex and c_mutex are locked */
1198 connection_closing( c );
1201 /* Drain input before close, to allow SSL error codes
1202 * to propagate to client. */
1208 rc = select(s+1, &rfd, NULL, NULL, &tv);
1210 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN, NULL);
1214 connection_close( c );
1216 } else if ( rc == 0 ) {
1218 struct berval authid = BER_BVNULL;
1220 c->c_needs_tls_accept = 0;
1222 /* we need to let SASL know */
1223 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1225 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1226 if( c->c_tls_ssf > c->c_ssf ) {
1227 c->c_ssf = c->c_tls_ssf;
1230 rc = dnX509peerNormalize( ssl, &authid );
1231 if ( rc != LDAP_SUCCESS ) {
1232 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1233 "unable to get TLS client DN, error=%d id=%lu\n",
1234 s, rc, c->c_connid );
1236 slap_sasl_external( c, c->c_tls_ssf, &authid );
1237 if ( authid.bv_val ) free( authid.bv_val );
1240 /* if success and data is ready, fall thru to data input loop */
1242 !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1244 connection_return( c );
1245 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1251 #ifdef HAVE_CYRUS_SASL
1252 if ( c->c_sasl_layers ) {
1253 /* If previous layer is not removed yet, give up for now */
1254 if ( !c->c_sasl_sockctx ) {
1255 connection_return( c );
1256 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1260 c->c_sasl_layers = 0;
1262 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1264 if( rc != LDAP_SUCCESS ) {
1265 Debug( LDAP_DEBUG_TRACE,
1266 "connection_read(%d): SASL install error "
1267 "error=%d id=%lu, closing\n",
1268 s, rc, c->c_connid );
1269 /* connections_mutex and c_mutex are locked */
1270 connection_closing( c );
1271 connection_close( c );
1272 connection_return( c );
1273 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1279 #define CONNECTION_INPUT_LOOP 1
1280 /* #define DATA_READY_LOOP 1 */
1283 /* How do we do this without getting into a busy loop ? */
1284 rc = connection_input( c );
1286 #ifdef DATA_READY_LOOP
1287 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1288 #elif CONNECTION_INPUT_LOOP
1295 Debug( LDAP_DEBUG_TRACE,
1296 "connection_read(%d): input error=%d id=%lu, closing.\n",
1297 s, rc, c->c_connid );
1298 /* connections_mutex and c_mutex are locked */
1299 connection_closing( c );
1300 connection_close( c );
1301 connection_return( c );
1302 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1306 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1307 slapd_set_read( s, 1 );
1310 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1311 slapd_set_write( s, 1 );
1314 connection_return( c );
1315 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1329 #ifdef LDAP_CONNECTIONLESS
1335 if ( conn->c_currentber == NULL &&
1336 ( conn->c_currentber = ber_alloc()) == NULL )
1338 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1344 #ifdef LDAP_CONNECTIONLESS
1345 if ( conn->c_is_udp ) {
1346 char peername[sizeof("IP=255.255.255.255:65336")];
1347 len = ber_int_sb_read(conn->c_sb, &peeraddr,
1348 sizeof(struct sockaddr));
1349 if (len != sizeof(struct sockaddr))
1351 sprintf( peername, "IP=%s:%d",
1352 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1353 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1354 Statslog( LDAP_DEBUG_STATS,
1355 "conn=%lu UDP request from %s (%s) accepted.\n",
1356 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1359 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1360 if ( tag != LDAP_TAG_MESSAGE ) {
1364 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1366 Debug( LDAP_DEBUG_TRACE,
1367 "ber_get_next on fd %d failed errno=%d (%s)\n",
1368 sd, err, sock_errstr(err) );
1369 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1370 /* log, close and send error */
1371 ber_free( conn->c_currentber, 1 );
1372 conn->c_currentber = NULL;
1379 ber = conn->c_currentber;
1380 conn->c_currentber = NULL;
1382 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1383 /* log, close and send error */
1384 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n",
1390 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1391 /* log, close and send error */
1392 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n",
1399 #ifdef LDAP_CONNECTIONLESS
1400 if( conn->c_is_udp ) {
1401 if( tag == LBER_OCTETSTRING ) {
1402 ber_get_stringa( ber, &cdn );
1403 tag = ber_peek_tag(ber, &len);
1405 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1406 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1412 if(tag == LDAP_REQ_BIND) {
1413 /* immediately abandon all existing operations upon BIND */
1414 connection_abandon( conn );
1417 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1420 /* clear state if the connection is being reused from inactive */
1421 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1422 memset( &conn->c_pagedresults_state, 0, sizeof( conn->c_pagedresults_state ) );
1425 op->o_res_ber = NULL;
1427 #ifdef LDAP_CONNECTIONLESS
1428 if (conn->c_is_udp) {
1430 ber_str2bv( cdn, 0, 1, &op->o_dn );
1431 op->o_protocol = LDAP_VERSION2;
1433 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1434 if (op->o_res_ber == NULL) return 1;
1436 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1437 sizeof(struct sockaddr), 0 );
1439 if (rc != sizeof(struct sockaddr)) {
1440 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1444 if (op->o_protocol == LDAP_VERSION2) {
1445 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1447 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1452 #endif /* LDAP_CONNECTIONLESS */
1456 /* Don't process requests when the conn is in the middle of a
1457 * Bind, or if it's closing. Also, don't let any single conn
1458 * use up all the available threads, and don't execute if we're
1459 * currently blocked on output. And don't execute if there are
1460 * already pending ops, let them go first. Abandon operations
1461 * get exceptions to some, but not all, cases.
1463 if (tag != LDAP_REQ_ABANDON && conn->c_conn_state == SLAP_C_CLOSING) {
1465 } else if (tag != LDAP_REQ_ABANDON && conn->c_writewaiter) {
1466 defer = "awaiting write";
1467 } else if (conn->c_n_ops_executing >= connection_pool_max/2) {
1468 defer = "too many executing";
1469 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1471 } else if (tag != LDAP_REQ_ABANDON && conn->c_n_ops_pending) {
1472 defer = "pending operations";
1476 int max = conn->c_dn.bv_len
1477 ? slap_conn_max_pending_auth
1478 : slap_conn_max_pending;
1480 Debug( LDAP_DEBUG_ANY,
1481 "connection_input: conn=%lu deferring operation: %s\n",
1482 conn->c_connid, defer, 0 );
1483 conn->c_n_ops_pending++;
1484 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1485 if ( conn->c_n_ops_pending > max ) {
1491 conn->c_n_ops_executing++;
1492 connection_op_activate( op );
1496 if ( conn->c_struct_state != SLAP_C_USED ) {
1497 /* connection must have got closed underneath us */
1501 assert( conn->c_struct_state == SLAP_C_USED );
1507 connection_resched( Connection *conn )
1511 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1514 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1516 /* use trylock to avoid possible deadlock */
1517 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1520 Debug( LDAP_DEBUG_TRACE,
1521 "connection_resched: reaquiring locks conn=%lu sd=%d\n",
1522 conn->c_connid, sd, 0 );
1524 * reaquire locks in the right order...
1525 * this may allow another thread to close this connection,
1526 * so recheck state below.
1528 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1529 ldap_pvt_thread_mutex_lock( &connections_mutex );
1530 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1533 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1534 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1535 "closed by other thread conn=%lu sd=%d\n",
1536 conn->c_connid, sd, 0 );
1538 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1539 "attempting closing conn=%lu sd=%d\n",
1540 conn->c_connid, sd, 0 );
1541 connection_close( conn );
1544 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1548 if( conn->c_conn_state != SLAP_C_ACTIVE || conn->c_writewaiter ) {
1549 /* other states need different handling */
1553 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1554 if ( conn->c_n_ops_executing > connection_pool_max/2 ) {
1557 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1558 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1559 /* pending operations should not be marked for abandonment */
1560 assert(!op->o_abandon);
1562 conn->c_n_ops_pending--;
1563 conn->c_n_ops_executing++;
1565 connection_op_activate( op );
1567 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1575 connection_init_log_prefix( Operation *op )
1577 if ( op->o_connid == (unsigned long)(-1) ) {
1578 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1579 "conn=-1 op=%lu", op->o_opid );
1582 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1583 "conn=%lu op=%lu", op->o_connid, op->o_opid );
1587 static int connection_op_activate( Operation *op )
1590 ber_tag_t tag = op->o_tag;
1592 if(tag == LDAP_REQ_BIND) {
1593 op->o_conn->c_conn_state = SLAP_C_BINDING;
1596 if (!op->o_dn.bv_len) {
1597 op->o_authz = op->o_conn->c_authz;
1598 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1599 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1601 op->o_authtype = op->o_conn->c_authtype;
1602 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1604 if (!op->o_protocol) {
1605 op->o_protocol = op->o_conn->c_protocol
1606 ? op->o_conn->c_protocol : LDAP_VERSION3;
1608 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE
1609 && op->o_protocol > LDAP_VERSION2)
1611 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1614 op->o_connid = op->o_conn->c_connid;
1615 connection_init_log_prefix( op );
1617 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1619 status = ldap_pvt_thread_pool_submit( &connection_pool,
1620 connection_operation, (void *) op );
1622 if ( status != 0 ) {
1623 Debug( LDAP_DEBUG_ANY,
1624 "ldap_pvt_thread_pool_submit: failed (%d) for conn=%lu\n",
1625 status, op->o_connid, 0 );
1626 /* should move op to pending list */
1632 int connection_write(ber_socket_t s)
1636 assert( connections != NULL );
1638 ldap_pvt_thread_mutex_lock( &connections_mutex );
1640 c = connection_get( s );
1643 Debug( LDAP_DEBUG_ANY,
1644 "connection_write(%ld): no connection!\n",
1646 slapd_remove(s, 1, 0);
1647 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1651 slapd_clr_write( s, 0);
1655 Debug( LDAP_DEBUG_TRACE,
1656 "connection_write(%d): waking output for id=%lu\n",
1657 s, c->c_connid, 0 );
1658 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1660 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1661 slapd_set_read( s, 1 );
1663 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1664 slapd_set_write( s, 1 );
1666 connection_return( c );
1667 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1672 connection_fake_init(
1677 conn->c_connid = -1;
1678 conn->c_send_ldap_result = slap_send_ldap_result;
1679 conn->c_send_search_entry = slap_send_search_entry;
1680 conn->c_send_search_reference = slap_send_search_reference;
1681 conn->c_listener = (Listener *)&dummy_list;
1682 conn->c_peer_domain = slap_empty_bv;
1683 conn->c_peer_name = slap_empty_bv;
1685 memset(op, 0, OPERATION_BUFFER_SIZE);
1686 op->o_hdr = (Opheader *)(op+1);
1687 op->o_controls = (void **)(op->o_hdr+1);
1688 /* set memory context */
1689 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx);
1690 op->o_tmpmfuncs = &slap_sl_mfuncs;
1691 op->o_threadctx = ctx;
1694 op->o_connid = op->o_conn->c_connid;
1695 connection_init_log_prefix( op );
1697 op->o_time = slap_get_time();
1701 connection_assign_nextid( Connection *conn )
1703 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
1704 conn->c_connid = conn_nextid++;
1705 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );