2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2004 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>
42 #include "slapi/slapi.h"
45 /* protected by connections_mutex */
46 static ldap_pvt_thread_mutex_t connections_mutex;
47 static Connection *connections = NULL;
49 static ldap_pvt_thread_mutex_t conn_nextid_mutex;
50 static unsigned long conn_nextid = 0;
52 /* structure state (protected by connections_mutex) */
53 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
54 #define SLAP_C_UNUSED 0x01
55 #define SLAP_C_USED 0x02
57 /* connection state (protected by c_mutex ) */
58 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
59 #define SLAP_C_INACTIVE 0x01 /* zero threads */
60 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
61 #define SLAP_C_BINDING 0x03 /* binding */
62 #define SLAP_C_CLOSING 0x04 /* closing */
63 #define SLAP_C_CLIENT 0x05 /* outbound client conn */
66 connection_state2str( int state )
69 case SLAP_C_INVALID: return "!";
70 case SLAP_C_INACTIVE: return "|";
71 case SLAP_C_ACTIVE: return "";
72 case SLAP_C_BINDING: return "B";
73 case SLAP_C_CLOSING: return "C";
74 case SLAP_C_CLIENT: return "L";
80 static Connection* connection_get( ber_socket_t s );
82 static int connection_input( Connection *c );
83 static void connection_close( Connection *c );
85 static int connection_op_activate( Operation *op );
86 static int connection_resched( Connection *conn );
87 static void connection_abandon( Connection *conn );
88 static void connection_destroy( Connection *c );
90 static ldap_pvt_thread_start_t connection_operation;
93 * Initialize connection management infrastructure.
95 int connections_init(void)
99 assert( connections == NULL );
101 if( connections != NULL) {
103 LDAP_LOG( CONNECTION, INFO,
104 "connections_init: already initialized.\n", 0, 0, 0 );
106 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
112 /* should check return of every call */
113 ldap_pvt_thread_mutex_init( &connections_mutex );
114 ldap_pvt_thread_mutex_init( &conn_nextid_mutex );
116 connections = (Connection *) ch_calloc( dtblsize, sizeof(Connection) );
118 if( connections == NULL ) {
120 LDAP_LOG( CONNECTION, ERR,
121 "connections_init: allocation (%d * %ld) of connection "
122 "array failed\n", dtblsize, (long) sizeof(Connection), 0 );
124 Debug( LDAP_DEBUG_ANY,
125 "connections_init: allocation (%d*%ld) of connection array failed\n",
126 dtblsize, (long) sizeof(Connection), 0 );
131 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
132 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
134 for (i=0; i<dtblsize; i++) connections[i].c_conn_idx = i;
137 * per entry initialization of the Connection array initialization
138 * will be done by connection_init()
145 * Destroy connection management infrastructure.
147 int connections_destroy(void)
151 /* should check return of every call */
153 if( connections == NULL) {
155 LDAP_LOG( CONNECTION, INFO,
156 "connections_destroy: nothing to destroy.\n", 0, 0, 0 );
158 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
164 for ( i = 0; i < dtblsize; i++ ) {
165 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
166 ber_sockbuf_free( connections[i].c_sb );
167 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
168 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
169 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
171 if ( slapi_plugins_used ) {
172 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION, &connections[i] );
181 ldap_pvt_thread_mutex_destroy( &connections_mutex );
182 ldap_pvt_thread_mutex_destroy( &conn_nextid_mutex );
187 * shutdown all connections
189 int connections_shutdown(void)
193 ldap_pvt_thread_mutex_lock( &connections_mutex );
195 for ( i = 0; i < dtblsize; i++ ) {
196 if( connections[i].c_struct_state != SLAP_C_USED ) {
199 /* give persistent clients a chance to cleanup */
200 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
201 ldap_pvt_thread_pool_submit( &connection_pool,
202 connections[i].c_clientfunc, connections[i].c_clientarg );
206 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
208 /* connections_mutex and c_mutex are locked */
209 connection_closing( &connections[i] );
210 connection_close( &connections[i] );
212 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
215 ldap_pvt_thread_mutex_unlock( &connections_mutex );
221 * Timeout idle connections.
223 int connections_timeout_idle(time_t now)
229 for( c = connection_first( &connindex );
231 c = connection_next( c, &connindex ) )
233 /* Don't timeout a slow-running request or a persistent
234 * outbound connection */
235 if( c->c_n_ops_executing ||
236 c->c_conn_state == SLAP_C_CLIENT ) continue;
238 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
240 connection_closing( c );
241 connection_close( c );
245 connection_done( c );
250 static Connection* connection_get( ber_socket_t s )
252 /* connections_mutex should be locked by caller */
257 LDAP_LOG( CONNECTION, ENTRY, "connection_get: socket %ld\n", (long)s, 0, 0 );
259 Debug( LDAP_DEBUG_ARGS,
260 "connection_get(%ld)\n",
264 assert( connections != NULL );
266 if(s == AC_SOCKET_INVALID) {
273 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
280 for(i=0; i<dtblsize; i++) {
281 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
282 assert( connections[i].c_conn_state == SLAP_C_INVALID );
283 assert( connections[i].c_sb == 0 );
287 ber_sockbuf_ctrl( connections[i].c_sb,
288 LBER_SB_OPT_GET_FD, &sd );
290 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
291 assert( connections[i].c_conn_state == SLAP_C_INVALID );
292 assert( sd == AC_SOCKET_INVALID );
296 /* state can actually change from used -> unused by resched,
297 * so don't assert details here.
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 );
321 LDAP_LOG( CONNECTION, ARGS,
322 "connection_get: connection %d not used\n", s, 0, 0 );
324 Debug( LDAP_DEBUG_TRACE,
325 "connection_get(%d): connection not used\n",
329 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
334 LDAP_LOG( CONNECTION, RESULTS,
335 "connection_get: get for %d got connid %lu\n", s, c->c_connid, 0 );
337 Debug( LDAP_DEBUG_TRACE,
338 "connection_get(%d): got connid=%lu\n",
344 assert( c->c_struct_state == SLAP_C_USED );
345 assert( c->c_conn_state != SLAP_C_INVALID );
346 assert( sd != AC_SOCKET_INVALID );
349 c->c_activitytime = slap_get_time();
351 if( global_idletimeout > 0 ) {
352 c->c_activitytime = slap_get_time();
360 static void connection_return( Connection *c )
362 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
365 long connection_init(
369 const char* peername,
372 struct berval *authid )
377 assert( connections != NULL );
379 assert( listener != NULL );
380 assert( dnsname != NULL );
381 assert( peername != NULL );
384 assert( flags != CONN_IS_TLS );
387 if( s == AC_SOCKET_INVALID ) {
389 LDAP_LOG( CONNECTION, INFO,
390 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
392 Debug( LDAP_DEBUG_ANY,
393 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
400 assert( s < dtblsize );
403 ldap_pvt_thread_mutex_lock( &connections_mutex );
413 for( i=0; i < dtblsize; i++) {
416 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
417 assert( connections[i].c_sb == 0 );
422 sd = AC_SOCKET_INVALID;
423 if (connections[i].c_sb != NULL) {
424 ber_sockbuf_ctrl( connections[i].c_sb,
425 LBER_SB_OPT_GET_FD, &sd );
428 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
429 assert( sd == AC_SOCKET_INVALID );
434 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
438 assert( connections[i].c_struct_state == SLAP_C_USED );
439 assert( connections[i].c_conn_state != SLAP_C_INVALID );
440 assert( sd != AC_SOCKET_INVALID );
445 LDAP_LOG( CONNECTION, INFO,
446 "connection_init(%d): connection table full "
447 "(%d/%d)\n", s, i, dtblsize );
449 Debug( LDAP_DEBUG_ANY,
450 "connection_init(%d): connection table full "
451 "(%d/%d)\n", s, i, dtblsize);
453 ldap_pvt_thread_mutex_unlock( &connections_mutex );
461 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
462 c->c_send_ldap_result = slap_send_ldap_result;
463 c->c_send_search_entry = slap_send_search_entry;
464 c->c_send_search_reference = slap_send_search_reference;
465 c->c_send_ldap_extended = slap_send_ldap_extended;
466 #ifdef LDAP_RES_INTERMEDIATE
467 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
470 BER_BVZERO( &c->c_authmech );
471 BER_BVZERO( &c->c_dn );
472 BER_BVZERO( &c->c_ndn );
474 c->c_listener = NULL;
475 BER_BVZERO( &c->c_peer_domain );
476 BER_BVZERO( &c->c_peer_name );
478 LDAP_STAILQ_INIT(&c->c_ops);
479 LDAP_STAILQ_INIT(&c->c_pending_ops);
481 BER_BVZERO( &c->c_sasl_bind_mech );
483 c->c_sasl_authctx = NULL;
484 c->c_sasl_sockctx = NULL;
485 c->c_sasl_extra = NULL;
486 c->c_sasl_bindop = NULL;
488 c->c_sb = ber_sockbuf_alloc( );
491 ber_len_t max = sockbuf_max_incoming;
492 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
495 c->c_currentber = NULL;
497 /* should check status of thread calls */
498 ldap_pvt_thread_mutex_init( &c->c_mutex );
499 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
500 ldap_pvt_thread_cond_init( &c->c_write_cv );
503 if ( slapi_plugins_used ) {
504 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
508 c->c_struct_state = SLAP_C_UNUSED;
511 ldap_pvt_thread_mutex_lock( &c->c_mutex );
513 assert( c->c_struct_state == SLAP_C_UNUSED );
514 assert( BER_BVISNULL( &c->c_authmech ) );
515 assert( BER_BVISNULL( &c->c_dn ) );
516 assert( BER_BVISNULL( &c->c_ndn ) );
517 assert( c->c_listener == NULL );
518 assert( BER_BVISNULL( &c->c_peer_domain ) );
519 assert( BER_BVISNULL( &c->c_peer_name ) );
520 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
521 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
522 assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
523 assert( c->c_sasl_done == 0 );
524 assert( c->c_sasl_authctx == NULL );
525 assert( c->c_sasl_sockctx == NULL );
526 assert( c->c_sasl_extra == NULL );
527 assert( c->c_sasl_bindop == NULL );
528 assert( c->c_currentber == NULL );
529 assert( c->c_writewaiter == 0);
531 c->c_listener = listener;
533 if ( flags == CONN_IS_CLIENT ) {
534 c->c_conn_state = SLAP_C_CLIENT;
535 c->c_struct_state = SLAP_C_USED;
536 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &s );
537 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
538 ldap_pvt_thread_mutex_unlock( &connections_mutex );
543 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
544 ber_str2bv( peername, 0, 1, &c->c_peer_name );
546 c->c_n_ops_received = 0;
547 c->c_n_ops_executing = 0;
548 c->c_n_ops_pending = 0;
549 c->c_n_ops_completed = 0;
555 /* set to zero until bind, implies LDAP_VERSION3 */
559 c->c_activitytime = c->c_starttime = slap_get_time();
561 if( global_idletimeout > 0 ) {
562 c->c_activitytime = c->c_starttime = slap_get_time();
566 #ifdef LDAP_CONNECTIONLESS
568 if( flags == CONN_IS_UDP ) {
571 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
572 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
574 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
575 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
576 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
577 LBER_SBIOD_LEVEL_PROVIDER, NULL );
582 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
583 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
585 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
586 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
590 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
591 INT_MAX, (void*)"ldap_" );
594 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
595 c /* non-NULL */ ) < 0 )
598 LDAP_LOG( CONNECTION, INFO,
599 "connection_init: conn %lu set nonblocking failed\n",
602 Debug( LDAP_DEBUG_ANY,
603 "connection_init(%d, %s): set nonblocking failed\n",
604 s, c->c_peer_name.bv_val, 0 );
608 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
609 id = c->c_connid = conn_nextid++;
610 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
612 c->c_conn_state = SLAP_C_INACTIVE;
613 c->c_struct_state = SLAP_C_USED;
615 c->c_ssf = c->c_transport_ssf = ssf;
619 if ( flags == CONN_IS_TLS ) {
621 c->c_needs_tls_accept = 1;
624 c->c_needs_tls_accept = 0;
628 slap_sasl_open( c, 0 );
629 slap_sasl_external( c, ssf, authid );
631 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
632 ldap_pvt_thread_mutex_unlock( &connections_mutex );
634 backend_connection_init(c);
639 void connection2anonymous( Connection *c )
641 assert( connections != NULL );
645 ber_len_t max = sockbuf_max_incoming;
646 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
649 if(c->c_authmech.bv_val != NULL ) {
650 free(c->c_authmech.bv_val);
652 BER_BVZERO( &c->c_authmech );
654 if(c->c_dn.bv_val != NULL) {
655 free(c->c_dn.bv_val);
657 BER_BVZERO( &c->c_dn );
658 if(c->c_ndn.bv_val != NULL) {
659 free(c->c_ndn.bv_val);
661 BER_BVZERO( &c->c_ndn );
663 c->c_authz_backend = NULL;
667 connection_destroy( Connection *c )
669 /* note: connections_mutex should be locked by caller */
671 unsigned long connid;
673 assert( connections != NULL );
675 assert( c->c_struct_state != SLAP_C_UNUSED );
676 assert( c->c_conn_state != SLAP_C_INVALID );
677 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
678 assert( c->c_writewaiter == 0);
680 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
681 connid = c->c_connid;
683 backend_connection_destroy(c);
688 c->c_activitytime = c->c_starttime = 0;
690 connection2anonymous( c );
691 c->c_listener = NULL;
693 if(c->c_peer_domain.bv_val != NULL) {
694 free(c->c_peer_domain.bv_val);
696 BER_BVZERO( &c->c_peer_domain );
697 if(c->c_peer_name.bv_val != NULL) {
698 free(c->c_peer_name.bv_val);
700 BER_BVZERO( &c->c_peer_name );
702 c->c_sasl_bind_in_progress = 0;
703 if(c->c_sasl_bind_mech.bv_val != NULL) {
704 free(c->c_sasl_bind_mech.bv_val);
706 BER_BVZERO( &c->c_sasl_bind_mech );
708 slap_sasl_close( c );
710 if ( c->c_currentber != NULL ) {
711 ber_free( c->c_currentber, 1 );
712 c->c_currentber = NULL;
715 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
716 if ( sd != AC_SOCKET_INVALID ) {
717 slapd_remove( sd, 1, 0 );
719 Statslog( LDAP_DEBUG_STATS,
720 "conn=%lu fd=%ld closed\n",
721 connid, (long) sd, 0, 0, 0 );
724 ber_sockbuf_free( c->c_sb );
726 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 c->c_conn_state = SLAP_C_INVALID;
734 c->c_struct_state = SLAP_C_UNUSED;
737 /* call destructors, then constructors; avoids unnecessary allocation */
738 if ( slapi_plugins_used ) {
739 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
744 int connection_state_closing( Connection *c )
746 /* c_mutex must be locked by caller */
750 assert( c->c_struct_state == SLAP_C_USED );
752 state = c->c_conn_state;
754 assert( state != SLAP_C_INVALID );
756 return state == SLAP_C_CLOSING;
759 static void connection_abandon( Connection *c )
761 /* c_mutex must be locked by caller */
765 LDAP_STAILQ_FOREACH(o, &c->c_ops, o_next) {
769 /* remove pending operations */
770 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
771 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
772 LDAP_STAILQ_NEXT(o, o_next) = NULL;
777 void connection_closing( Connection *c )
779 assert( connections != NULL );
781 assert( c->c_struct_state == SLAP_C_USED );
782 assert( c->c_conn_state != SLAP_C_INVALID );
784 /* c_mutex must be locked by caller */
786 if( c->c_conn_state != SLAP_C_CLOSING ) {
789 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
791 LDAP_LOG( CONNECTION, DETAIL1,
792 "connection_closing: conn %lu readying socket %d for close.\n",
793 c->c_connid, sd, 0 );
795 Debug( LDAP_DEBUG_TRACE,
796 "connection_closing: readying conn=%lu sd=%d for close\n",
797 c->c_connid, sd, 0 );
799 /* update state to closing */
800 c->c_conn_state = SLAP_C_CLOSING;
802 /* don't listen on this port anymore */
803 slapd_clr_read( sd, 1 );
805 /* abandon active operations */
806 connection_abandon( c );
808 /* wake write blocked operations */
809 slapd_clr_write( sd, 1 );
810 ldap_pvt_thread_cond_signal( &c->c_write_cv );
814 static void connection_close( Connection *c )
818 assert( connections != NULL );
820 assert( c->c_struct_state == SLAP_C_USED );
821 assert( c->c_conn_state == SLAP_C_CLOSING );
823 /* note: connections_mutex and c_mutex should be locked by caller */
825 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
826 if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
828 LDAP_LOG( CONNECTION, DETAIL1,
829 "connection_close: conn %lu deferring sd %d\n",
830 c->c_connid, sd, 0 );
832 Debug( LDAP_DEBUG_TRACE,
833 "connection_close: deferring conn=%lu sd=%d\n",
834 c->c_connid, sd, 0 );
840 LDAP_LOG( CONNECTION, RESULTS,
841 "connection_close: conn %lu sd %d\n", c->c_connid, sd, 0 );
843 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
844 c->c_connid, sd, 0 );
846 connection_destroy( c );
849 unsigned long connections_nextid(void)
852 assert( connections != NULL );
854 ldap_pvt_thread_mutex_lock( &connections_mutex );
858 ldap_pvt_thread_mutex_unlock( &connections_mutex );
863 Connection* connection_first( ber_socket_t *index )
865 assert( connections != NULL );
866 assert( index != NULL );
868 ldap_pvt_thread_mutex_lock( &connections_mutex );
872 return connection_next(NULL, index);
875 Connection* connection_next( Connection *c, ber_socket_t *index )
877 assert( connections != NULL );
878 assert( index != NULL );
879 assert( *index <= dtblsize );
882 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
887 for(; *index < dtblsize; (*index)++) {
888 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
889 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
897 if( connections[*index].c_struct_state == SLAP_C_USED ) {
898 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
899 c = &connections[(*index)++];
903 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
904 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
908 ldap_pvt_thread_mutex_lock( &c->c_mutex );
914 void connection_done( Connection *c )
916 assert( connections != NULL );
919 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
922 ldap_pvt_thread_mutex_unlock( &connections_mutex );
926 * connection_activity - handle the request operation op on connection
927 * conn. This routine figures out what kind of operation it is and
928 * calls the appropriate stub to handle it.
932 #define INCR_OP(var,index) \
934 ldap_pvt_thread_mutex_lock( &num_ops_mutex ); \
936 ldap_pvt_thread_mutex_unlock( &num_ops_mutex ); \
938 #else /* !SLAPD_MONITOR */
939 #define INCR_OP(var,index)
940 #endif /* !SLAPD_MONITOR */
943 connection_operation( void *ctx, void *arg_v )
946 Operation *op = arg_v;
947 SlapReply rs = {REP_RESULT};
948 ber_tag_t tag = op->o_tag;
950 ber_tag_t oldtag = tag;
951 #endif /* SLAPD_MONITOR */
952 Connection *conn = op->o_conn;
954 void *memctx_null = NULL;
957 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
959 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
961 op->o_threadctx = ctx;
965 case LDAP_REQ_UNBIND:
967 case LDAP_REQ_DELETE:
968 case LDAP_REQ_MODRDN:
969 case LDAP_REQ_MODIFY:
970 case LDAP_REQ_COMPARE:
971 case LDAP_REQ_SEARCH:
972 case LDAP_REQ_ABANDON:
973 case LDAP_REQ_EXTENDED:
977 LDAP_LOG( CONNECTION, INFO, "connection_operation: "
978 "conn %lu unknown LDAP request 0x%lx\n",
979 conn->c_connid, tag, 0 );
981 Debug( LDAP_DEBUG_ANY, "connection_operation: "
982 "conn %lu unknown LDAP request 0x%lx\n",
983 conn->c_connid, tag, 0 );
985 op->o_tag = LBER_ERROR;
986 rs.sr_err = LDAP_PROTOCOL_ERROR;
987 rs.sr_text = "unknown LDAP request";
988 send_ldap_disconnect( op, &rs );
989 rc = SLAPD_DISCONNECT;
990 goto operations_error;
993 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
995 LDAP_LOG( CONNECTION, ERR,
996 "connection_operation: conn %lu SASL bind in progress (tag=%ld).\n",
997 conn->c_connid, (long)tag, 0 );
999 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1000 "error: SASL bind in progress (tag=%ld).\n",
1003 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1004 "SASL bind in progress" );
1005 rc = LDAP_OPERATIONS_ERROR;
1006 goto operations_error;
1009 /* We can use Thread-Local storage for most mallocs. We can
1010 * also use TL for ber parsing, but not on Add or Modify.
1013 memsiz = ber_len( op->o_ber ) * 64;
1014 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
1016 memsiz = SLAP_SLAB_SIZE;
1018 memctx = slap_sl_mem_create( memsiz, ctx );
1019 op->o_tmpmemctx = memctx;
1020 op->o_tmpmfuncs = &slap_sl_mfuncs;
1021 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1022 /* Note - the ber and its buffer are already allocated from
1023 * regular memory; this only affects subsequent mallocs that
1024 * ber_scanf may invoke.
1026 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1031 INCR_OP(num_ops_initiated_, SLAP_OP_BIND);
1032 rc = do_bind( op, &rs );
1035 case LDAP_REQ_UNBIND:
1036 INCR_OP(num_ops_initiated_, SLAP_OP_UNBIND);
1037 rc = do_unbind( op, &rs );
1041 INCR_OP(num_ops_initiated_, SLAP_OP_ADD);
1042 rc = do_add( op, &rs );
1045 case LDAP_REQ_DELETE:
1046 INCR_OP(num_ops_initiated_, SLAP_OP_DELETE);
1047 rc = do_delete( op, &rs );
1050 case LDAP_REQ_MODRDN:
1051 INCR_OP(num_ops_initiated_, SLAP_OP_MODRDN);
1052 rc = do_modrdn( op, &rs );
1055 case LDAP_REQ_MODIFY:
1056 INCR_OP(num_ops_initiated_, SLAP_OP_MODIFY);
1057 rc = do_modify( op, &rs );
1060 case LDAP_REQ_COMPARE:
1061 INCR_OP(num_ops_initiated_, SLAP_OP_COMPARE);
1062 rc = do_compare( op, &rs );
1065 case LDAP_REQ_SEARCH:
1066 INCR_OP(num_ops_initiated_, SLAP_OP_SEARCH);
1067 rc = do_search( op, &rs );
1070 case LDAP_REQ_ABANDON:
1071 INCR_OP(num_ops_initiated_, SLAP_OP_ABANDON);
1072 rc = do_abandon( op, &rs );
1075 case LDAP_REQ_EXTENDED:
1076 INCR_OP(num_ops_initiated_, SLAP_OP_EXTENDED);
1077 rc = do_extended( op, &rs );
1086 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
1088 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
1090 num_ops_completed++;
1091 #ifdef SLAPD_MONITOR
1094 num_ops_completed_[SLAP_OP_BIND]++;
1096 case LDAP_REQ_UNBIND:
1097 num_ops_completed_[SLAP_OP_UNBIND]++;
1100 num_ops_completed_[SLAP_OP_ADD]++;
1102 case LDAP_REQ_DELETE:
1103 num_ops_completed_[SLAP_OP_DELETE]++;
1105 case LDAP_REQ_MODRDN:
1106 num_ops_completed_[SLAP_OP_MODRDN]++;
1108 case LDAP_REQ_MODIFY:
1109 num_ops_completed_[SLAP_OP_MODIFY]++;
1111 case LDAP_REQ_COMPARE:
1112 num_ops_completed_[SLAP_OP_COMPARE]++;
1114 case LDAP_REQ_SEARCH:
1115 num_ops_completed_[SLAP_OP_SEARCH]++;
1117 case LDAP_REQ_ABANDON:
1118 num_ops_completed_[SLAP_OP_ABANDON]++;
1120 case LDAP_REQ_EXTENDED:
1121 num_ops_completed_[SLAP_OP_EXTENDED]++;
1127 #endif /* SLAPD_MONITOR */
1128 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
1130 if ( op->o_cancel == SLAP_CANCEL_REQ ) {
1131 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 if ( op->o_cancel != SLAP_CANCEL_ACK &&
1144 ( op->o_sync_mode & SLAP_SYNC_PERSIST ) )
1146 slap_sl_mem_detach( ctx, memctx );
1148 } else if ( op->o_sync_slog_size != -1 ) {
1149 slap_sl_mem_detach( ctx, memctx );
1150 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1151 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1152 conn->c_n_ops_executing--;
1153 conn->c_n_ops_completed++;
1156 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1157 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1159 conn->c_n_ops_executing--;
1160 conn->c_n_ops_completed++;
1165 case LDAP_REQ_UNBIND:
1166 /* c_mutex is locked */
1167 connection_closing( conn );
1171 conn->c_sasl_bind_in_progress =
1172 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
1174 if( conn->c_conn_state == SLAP_C_BINDING) {
1175 conn->c_conn_state = SLAP_C_ACTIVE;
1179 connection_resched( conn );
1180 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1184 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1186 int connection_client_setup(
1188 ldap_pvt_thread_start_t *func,
1194 rc = connection_init( s, (Listener *)&dummy_list, "", "",
1195 CONN_IS_CLIENT, 0, NULL );
1196 if ( rc < 0 ) return -1;
1198 c = connection_get( s );
1199 c->c_clientfunc = func;
1200 c->c_clientarg = arg;
1201 connection_return( c );
1202 slapd_add_internal( s, 0 );
1203 slapd_set_read( s, 1 );
1207 void connection_client_enable(
1210 slapd_set_read( s, 1 );
1213 void connection_client_stop(
1218 /* get (locked) connection */
1219 c = connection_get( s );
1221 assert( c->c_conn_state == SLAP_C_CLIENT );
1223 c->c_listener = NULL;
1224 c->c_conn_state = SLAP_C_INVALID;
1225 c->c_struct_state = SLAP_C_UNUSED;
1226 connection_return( c );
1227 slapd_remove( s, 0, 1 );
1230 int connection_read(ber_socket_t s)
1235 assert( connections != NULL );
1237 ldap_pvt_thread_mutex_lock( &connections_mutex );
1239 /* get (locked) connection */
1240 c = connection_get( s );
1244 LDAP_LOG( CONNECTION, INFO,
1245 "connection_read: sock %ld no connection\n", (long)s, 0, 0 );
1247 Debug( LDAP_DEBUG_ANY,
1248 "connection_read(%ld): no connection!\n",
1251 slapd_remove(s, 1, 0);
1253 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1259 if( c->c_conn_state == SLAP_C_CLOSING ) {
1261 LDAP_LOG( CONNECTION, INFO,
1262 "connection_read: conn %lu connection closing, ignoring input\n",
1263 c->c_connid, 0, 0 );
1265 Debug( LDAP_DEBUG_TRACE,
1266 "connection_read(%d): closing, ignoring input for id=%lu\n",
1267 s, c->c_connid, 0 );
1269 connection_return( c );
1270 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1274 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1275 slapd_clr_read( s, 0 );
1276 ldap_pvt_thread_pool_submit( &connection_pool,
1277 c->c_clientfunc, c->c_clientarg );
1278 connection_return( c );
1279 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1284 LDAP_LOG( CONNECTION, DETAIL1,
1285 "connection_read: conn %lu checking for input.\n",
1286 c->c_connid, 0, 0 );
1288 Debug( LDAP_DEBUG_TRACE,
1289 "connection_read(%d): checking for input on id=%lu\n",
1290 s, c->c_connid, 0 );
1294 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1295 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1297 #if 0 /* required by next #if 0 */
1303 LDAP_LOG( CONNECTION, ERR,
1304 "connection_read: conn %lu TLS accept error, error %d\n",
1305 c->c_connid, rc, 0 );
1307 Debug( LDAP_DEBUG_TRACE,
1308 "connection_read(%d): TLS accept error "
1309 "error=%d id=%lu, closing\n",
1310 s, rc, c->c_connid );
1312 c->c_needs_tls_accept = 0;
1313 /* connections_mutex and c_mutex are locked */
1314 connection_closing( c );
1317 /* Drain input before close, to allow SSL error codes
1318 * to propagate to client. */
1324 rc = select(s+1, &rfd, NULL, NULL, &tv);
1326 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN, NULL);
1330 connection_close( c );
1332 } else if ( rc == 0 ) {
1334 struct berval authid = BER_BVNULL;
1336 c->c_needs_tls_accept = 0;
1338 /* we need to let SASL know */
1339 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1341 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1342 if( c->c_tls_ssf > c->c_ssf ) {
1343 c->c_ssf = c->c_tls_ssf;
1346 rc = dnX509peerNormalize( ssl, &authid );
1347 if ( rc != LDAP_SUCCESS ) {
1349 LDAP_LOG( CONNECTION, INFO, "connection_read: "
1350 "conn %lu unable to get TLS client DN, error %d\n",
1351 c->c_connid, rc, 0 );
1353 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1354 "unable to get TLS client DN, error=%d id=%lu\n",
1355 s, rc, c->c_connid );
1358 slap_sasl_external( c, c->c_tls_ssf, &authid );
1359 if ( authid.bv_val ) free( authid.bv_val );
1362 /* if success and data is ready, fall thru to data input loop */
1364 !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1366 connection_return( c );
1367 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1373 #ifdef HAVE_CYRUS_SASL
1374 if ( c->c_sasl_layers ) {
1375 /* If previous layer is not removed yet, give up for now */
1376 if ( !c->c_sasl_sockctx ) {
1377 connection_return( c );
1378 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1382 c->c_sasl_layers = 0;
1384 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1386 if( rc != LDAP_SUCCESS ) {
1388 LDAP_LOG( CONNECTION, ERR,
1389 "connection_read: conn %lu SASL install error %d, closing\n",
1390 c->c_connid, rc, 0 );
1392 Debug( LDAP_DEBUG_TRACE,
1393 "connection_read(%d): SASL install error "
1394 "error=%d id=%lu, closing\n",
1395 s, rc, c->c_connid );
1397 /* connections_mutex and c_mutex are locked */
1398 connection_closing( c );
1399 connection_close( c );
1400 connection_return( c );
1401 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1407 #define CONNECTION_INPUT_LOOP 1
1408 /* #define DATA_READY_LOOP 1 */
1411 /* How do we do this without getting into a busy loop ? */
1412 rc = connection_input( c );
1414 #ifdef DATA_READY_LOOP
1415 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1416 #elif CONNECTION_INPUT_LOOP
1424 LDAP_LOG( CONNECTION, ERR,
1425 "connection_read: conn %lu input error %d, closing.\n",
1426 c->c_connid, rc, 0 );
1428 Debug( LDAP_DEBUG_TRACE,
1429 "connection_read(%d): input error=%d id=%lu, closing.\n",
1430 s, rc, c->c_connid );
1432 /* connections_mutex and c_mutex are locked */
1433 connection_closing( c );
1434 connection_close( c );
1435 connection_return( c );
1436 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1440 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1441 slapd_set_read( s, 1 );
1444 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1445 slapd_set_write( s, 1 );
1448 connection_return( c );
1449 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1463 #ifdef LDAP_CONNECTIONLESS
1469 if ( conn->c_currentber == NULL &&
1470 ( conn->c_currentber = ber_alloc()) == NULL )
1473 LDAP_LOG( CONNECTION, ERR,
1474 "connection_input: conn %lu ber_alloc failed.\n",
1475 conn->c_connid, 0, 0 );
1477 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1484 #ifdef LDAP_CONNECTIONLESS
1485 if ( conn->c_is_udp ) {
1486 char peername[sizeof("IP=255.255.255.255:65336")];
1487 len = ber_int_sb_read(conn->c_sb, &peeraddr,
1488 sizeof(struct sockaddr));
1489 if (len != sizeof(struct sockaddr))
1491 sprintf( peername, "IP=%s:%d",
1492 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1493 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1494 Statslog( LDAP_DEBUG_STATS,
1495 "conn=%lu UDP request from %s (%s) accepted.\n",
1496 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1499 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1500 if ( tag != LDAP_TAG_MESSAGE ) {
1504 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1507 LDAP_LOG( CONNECTION, ERR,
1508 "connection_input: conn %lu ber_get_next failed, errno %d (%s).\n",
1509 conn->c_connid, err, sock_errstr(err) );
1511 Debug( LDAP_DEBUG_TRACE,
1512 "ber_get_next on fd %d failed errno=%d (%s)\n",
1513 sd, err, sock_errstr(err) );
1515 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1516 /* log, close and send error */
1517 ber_free( conn->c_currentber, 1 );
1518 conn->c_currentber = NULL;
1525 ber = conn->c_currentber;
1526 conn->c_currentber = NULL;
1528 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1529 /* log, close and send error */
1531 LDAP_LOG( CONNECTION, ERR,
1532 "connection_input: conn %lu ber_get_int returns 0x%lx.\n",
1533 conn->c_connid, tag, 0 );
1535 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n",
1542 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1543 /* log, close and send error */
1545 LDAP_LOG( CONNECTION, ERR,
1546 "connection_input: conn %lu ber_peek_tag returns 0x%lx.\n",
1547 conn->c_connid, tag, 0 );
1549 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n",
1557 #ifdef LDAP_CONNECTIONLESS
1558 if( conn->c_is_udp ) {
1559 if( tag == LBER_OCTETSTRING ) {
1560 ber_get_stringa( ber, &cdn );
1561 tag = ber_peek_tag(ber, &len);
1563 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1565 LDAP_LOG( CONNECTION, ERR,
1566 "connection_input: conn %lu invalid req for UDP 0x%lx.\n",
1567 conn->c_connid, tag, 0 );
1569 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1576 if(tag == LDAP_REQ_BIND) {
1577 /* immediately abandon all exiting operations upon BIND */
1578 connection_abandon( conn );
1581 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1584 op->o_assertion = NULL;
1585 op->o_preread_attrs = NULL;
1586 op->o_postread_attrs = NULL;
1587 op->o_vrFilter = NULL;
1588 /* clear state if the connection is being reused from inactive */
1589 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1590 memset( &conn->c_pagedresults_state, 0, sizeof( conn->c_pagedresults_state ) );
1592 op->o_pagedresults_state = conn->c_pagedresults_state;
1594 op->o_res_ber = NULL;
1596 #ifdef LDAP_CONNECTIONLESS
1597 if (conn->c_is_udp) {
1599 ber_str2bv( cdn, 0, 1, &op->o_dn );
1600 op->o_protocol = LDAP_VERSION2;
1602 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1603 if (op->o_res_ber == NULL) return 1;
1605 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1606 sizeof(struct sockaddr), 0 );
1608 if (rc != sizeof(struct sockaddr)) {
1610 LDAP_LOG( CONNECTION, INFO,
1611 "connection_input: conn %lu ber_write failed\n",
1612 conn->c_connid, 0, 0 );
1614 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1619 if (op->o_protocol == LDAP_VERSION2) {
1620 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1623 LDAP_LOG( CONNECTION, INFO,
1624 "connection_input: conn %lu put outer sequence failed\n",
1625 conn->c_connid, 0, 0 );
1627 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1633 #endif /* LDAP_CONNECTIONLESS */
1637 /* Don't process requests when the conn is in the middle of a
1638 * Bind, or if it's closing. Also, don't let any single conn
1639 * use up all the available threads, and don't execute if we're
1640 * currently blocked on output. And don't execute if there are
1641 * already pending ops, let them go first. Abandon operations
1642 * get exceptions to some, but not all, cases.
1644 if (tag != LDAP_REQ_ABANDON && conn->c_conn_state == SLAP_C_CLOSING) {
1646 } else if (tag != LDAP_REQ_ABANDON && conn->c_writewaiter) {
1647 defer = "awaiting write";
1648 } else if (conn->c_n_ops_executing >= connection_pool_max/2) {
1649 defer = "too many executing";
1650 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1652 } else if (tag != LDAP_REQ_ABANDON && conn->c_n_ops_pending) {
1653 defer = "pending operations";
1657 int max = conn->c_dn.bv_len
1658 ? slap_conn_max_pending_auth
1659 : slap_conn_max_pending;
1662 LDAP_LOG( CONNECTION, INFO,
1663 "connection_input: conn %lu deferring operation: %s\n",
1664 conn->c_connid, defer, 0 );
1666 Debug( LDAP_DEBUG_ANY,
1667 "connection_input: conn=%lu deferring operation: %s\n",
1668 conn->c_connid, defer, 0 );
1670 conn->c_n_ops_pending++;
1671 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1672 if ( conn->c_n_ops_pending > max ) {
1678 conn->c_n_ops_executing++;
1679 connection_op_activate( op );
1683 if ( conn->c_struct_state != SLAP_C_USED ) {
1684 /* connection must have got closed underneath us */
1688 assert( conn->c_struct_state == SLAP_C_USED );
1694 connection_resched( Connection *conn )
1698 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1701 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1703 /* us trylock to avoid possible deadlock */
1704 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1708 LDAP_LOG( CONNECTION, DETAIL1,
1709 "connection_resched: conn %lu reaquiring locks.\n",
1710 conn->c_connid, 0, 0 );
1712 Debug( LDAP_DEBUG_TRACE,
1713 "connection_resched: reaquiring locks conn=%lu sd=%d\n",
1714 conn->c_connid, sd, 0 );
1717 * reaquire locks in the right order...
1718 * this may allow another thread to close this connection,
1719 * so recheck state below.
1721 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1722 ldap_pvt_thread_mutex_lock( &connections_mutex );
1723 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1726 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1728 LDAP_LOG( CONNECTION, INFO,
1729 "connection_resched: conn %lu closed by other thread.\n",
1730 conn->c_connid, 0, 0 );
1732 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1733 "closed by other thread conn=%lu sd=%d\n",
1734 conn->c_connid, sd, 0 );
1738 LDAP_LOG( CONNECTION, DETAIL1,
1739 "connection_resched: conn %lu attempting closing.\n",
1740 conn->c_connid, 0, 0 );
1742 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1743 "attempting closing conn=%lu sd=%d\n",
1744 conn->c_connid, sd, 0 );
1746 connection_close( conn );
1749 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1753 if( conn->c_conn_state != SLAP_C_ACTIVE || conn->c_writewaiter ) {
1754 /* other states need different handling */
1758 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1759 if ( conn->c_n_ops_executing > connection_pool_max/2 ) {
1762 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1763 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1764 /* pending operations should not be marked for abandonment */
1765 assert(!op->o_abandon);
1767 conn->c_n_ops_pending--;
1768 conn->c_n_ops_executing++;
1770 connection_op_activate( op );
1772 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1779 static int connection_op_activate( Operation *op )
1782 ber_tag_t tag = op->o_tag;
1784 if(tag == LDAP_REQ_BIND) {
1785 op->o_conn->c_conn_state = SLAP_C_BINDING;
1788 if (!op->o_dn.bv_len) {
1789 op->o_authz = op->o_conn->c_authz;
1790 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1791 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1793 op->o_authtype = op->o_conn->c_authtype;
1794 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1796 if (!op->o_protocol) {
1797 op->o_protocol = op->o_conn->c_protocol
1798 ? op->o_conn->c_protocol : LDAP_VERSION3;
1800 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE
1801 && op->o_protocol > LDAP_VERSION2)
1803 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1806 op->o_connid = op->o_conn->c_connid;
1808 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1810 status = ldap_pvt_thread_pool_submit( &connection_pool,
1811 connection_operation, (void *) op );
1813 if ( status != 0 ) {
1815 LDAP_LOG( CONNECTION, ERR,
1816 "connection_op_activate: conn %lu thread pool submit failed.\n",
1817 op->o_connid, 0, 0 );
1819 Debug( LDAP_DEBUG_ANY,
1820 "ldap_pvt_thread_pool_submit: failed (%d) for conn=%lu\n",
1821 status, op->o_connid, 0 );
1823 /* should move op to pending list */
1829 int connection_write(ber_socket_t s)
1833 assert( connections != NULL );
1835 ldap_pvt_thread_mutex_lock( &connections_mutex );
1837 c = connection_get( s );
1839 slapd_clr_write( s, 0);
1843 LDAP_LOG( CONNECTION, ERR,
1844 "connection_write: sock %ld no connection!\n", (long)s, 0, 0);
1846 Debug( LDAP_DEBUG_ANY,
1847 "connection_write(%ld): no connection!\n",
1850 slapd_remove(s, 1, 0);
1851 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1858 LDAP_LOG( CONNECTION, DETAIL1,
1859 "connection_write conn %lu waking output.\n", c->c_connid, 0, 0 );
1861 Debug( LDAP_DEBUG_TRACE,
1862 "connection_write(%d): waking output for id=%lu\n",
1863 s, c->c_connid, 0 );
1865 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1867 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1868 slapd_set_read( s, 1 );
1870 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1871 slapd_set_write( s, 1 );
1873 connection_return( c );
1874 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1879 connection_fake_init(
1884 conn->c_connid = -1;
1885 conn->c_send_ldap_result = slap_send_ldap_result;
1886 conn->c_send_search_entry = slap_send_search_entry;
1887 conn->c_send_search_reference = slap_send_search_reference;
1888 conn->c_listener = (Listener *)&dummy_list;
1889 conn->c_peer_domain = slap_empty_bv;
1890 conn->c_peer_name = slap_empty_bv;
1892 /* set memory context */
1893 op->o_tmpmemctx = slap_sl_mem_create( SLAP_SLAB_SIZE, ctx );
1894 op->o_tmpmfuncs = &slap_sl_mfuncs;
1895 op->o_threadctx = ctx;
1898 op->o_connid = op->o_conn->c_connid;
1900 op->o_time = slap_get_time();
1904 connection_assign_nextid( Connection *conn )
1906 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
1907 conn->c_connid = conn_nextid++;
1908 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );