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>
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 c->c_authmech.bv_val = NULL;
471 c->c_authmech.bv_len = 0;
472 c->c_dn.bv_val = NULL;
474 c->c_ndn.bv_val = NULL;
477 c->c_listener = NULL;
478 c->c_peer_domain.bv_val = NULL;
479 c->c_peer_domain.bv_len = 0;
480 c->c_peer_name.bv_val = NULL;
481 c->c_peer_name.bv_len = 0;
483 LDAP_STAILQ_INIT(&c->c_ops);
484 LDAP_STAILQ_INIT(&c->c_pending_ops);
486 c->c_sasl_bind_mech.bv_val = NULL;
487 c->c_sasl_bind_mech.bv_len = 0;
489 c->c_sasl_authctx = NULL;
490 c->c_sasl_sockctx = NULL;
491 c->c_sasl_extra = NULL;
492 c->c_sasl_bindop = NULL;
494 c->c_sb = ber_sockbuf_alloc( );
497 ber_len_t max = sockbuf_max_incoming;
498 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
501 c->c_currentber = NULL;
503 /* should check status of thread calls */
504 ldap_pvt_thread_mutex_init( &c->c_mutex );
505 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
506 ldap_pvt_thread_cond_init( &c->c_write_cv );
509 if ( slapi_plugins_used ) {
510 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
514 c->c_struct_state = SLAP_C_UNUSED;
517 ldap_pvt_thread_mutex_lock( &c->c_mutex );
519 assert( c->c_struct_state == SLAP_C_UNUSED );
520 assert( c->c_authmech.bv_val == NULL );
521 assert( c->c_dn.bv_val == NULL );
522 assert( c->c_ndn.bv_val == NULL );
523 assert( c->c_listener == NULL );
524 assert( c->c_peer_domain.bv_val == NULL );
525 assert( c->c_peer_name.bv_val == NULL );
526 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
527 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
528 assert( c->c_sasl_bind_mech.bv_val == NULL );
529 assert( c->c_sasl_done == 0 );
530 assert( c->c_sasl_authctx == NULL );
531 assert( c->c_sasl_sockctx == NULL );
532 assert( c->c_sasl_extra == NULL );
533 assert( c->c_sasl_bindop == NULL );
534 assert( c->c_currentber == NULL );
535 assert( c->c_writewaiter == 0);
537 c->c_listener = listener;
539 if ( flags == CONN_IS_CLIENT ) {
540 c->c_conn_state = SLAP_C_CLIENT;
541 c->c_struct_state = SLAP_C_USED;
542 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &s );
543 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
544 ldap_pvt_thread_mutex_unlock( &connections_mutex );
549 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
550 ber_str2bv( peername, 0, 1, &c->c_peer_name );
552 c->c_n_ops_received = 0;
553 c->c_n_ops_executing = 0;
554 c->c_n_ops_pending = 0;
555 c->c_n_ops_completed = 0;
561 /* set to zero until bind, implies LDAP_VERSION3 */
565 c->c_activitytime = c->c_starttime = slap_get_time();
567 if( global_idletimeout > 0 ) {
568 c->c_activitytime = c->c_starttime = slap_get_time();
572 #ifdef LDAP_CONNECTIONLESS
574 if( flags == CONN_IS_UDP ) {
577 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
578 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
580 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
581 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
582 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
583 LBER_SBIOD_LEVEL_PROVIDER, NULL );
588 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
589 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
591 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
592 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
596 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
597 INT_MAX, (void*)"ldap_" );
600 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
601 c /* non-NULL */ ) < 0 )
604 LDAP_LOG( CONNECTION, INFO,
605 "connection_init: conn %lu set nonblocking failed\n",
608 Debug( LDAP_DEBUG_ANY,
609 "connection_init(%d, %s): set nonblocking failed\n",
610 s, c->c_peer_name.bv_val, 0 );
614 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
615 id = c->c_connid = conn_nextid++;
616 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
618 c->c_conn_state = SLAP_C_INACTIVE;
619 c->c_struct_state = SLAP_C_USED;
621 c->c_ssf = c->c_transport_ssf = ssf;
625 if ( flags == CONN_IS_TLS ) {
627 c->c_needs_tls_accept = 1;
630 c->c_needs_tls_accept = 0;
634 slap_sasl_open( c, 0 );
635 slap_sasl_external( c, ssf, authid );
637 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
638 ldap_pvt_thread_mutex_unlock( &connections_mutex );
640 backend_connection_init(c);
645 void connection2anonymous( Connection *c )
647 assert( connections != NULL );
651 ber_len_t max = sockbuf_max_incoming;
652 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
655 if(c->c_authmech.bv_val != NULL ) {
656 free(c->c_authmech.bv_val);
657 c->c_authmech.bv_val = NULL;
659 c->c_authmech.bv_len = 0;
661 if(c->c_dn.bv_val != NULL) {
662 free(c->c_dn.bv_val);
663 c->c_dn.bv_val = NULL;
666 if(c->c_ndn.bv_val != NULL) {
667 free(c->c_ndn.bv_val);
668 c->c_ndn.bv_val = NULL;
672 c->c_authz_backend = NULL;
676 connection_destroy( Connection *c )
678 /* note: connections_mutex should be locked by caller */
680 unsigned long connid;
682 assert( connections != NULL );
684 assert( c->c_struct_state != SLAP_C_UNUSED );
685 assert( c->c_conn_state != SLAP_C_INVALID );
686 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
687 assert( c->c_writewaiter == 0);
689 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
690 connid = c->c_connid;
692 backend_connection_destroy(c);
697 c->c_activitytime = c->c_starttime = 0;
699 connection2anonymous( c );
700 c->c_listener = NULL;
702 if(c->c_peer_domain.bv_val != NULL) {
703 free(c->c_peer_domain.bv_val);
704 c->c_peer_domain.bv_val = NULL;
706 c->c_peer_domain.bv_len = 0;
707 if(c->c_peer_name.bv_val != NULL) {
708 free(c->c_peer_name.bv_val);
709 c->c_peer_name.bv_val = NULL;
711 c->c_peer_name.bv_len = 0;
713 c->c_sasl_bind_in_progress = 0;
714 if(c->c_sasl_bind_mech.bv_val != NULL) {
715 free(c->c_sasl_bind_mech.bv_val);
716 c->c_sasl_bind_mech.bv_val = NULL;
718 c->c_sasl_bind_mech.bv_len = 0;
720 slap_sasl_close( c );
722 if ( c->c_currentber != NULL ) {
723 ber_free( c->c_currentber, 1 );
724 c->c_currentber = NULL;
727 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
728 if ( sd != AC_SOCKET_INVALID ) {
729 slapd_remove( sd, 1, 0 );
731 Statslog( LDAP_DEBUG_STATS,
732 "conn=%lu fd=%ld closed\n",
733 connid, (long) sd, 0, 0, 0 );
736 ber_sockbuf_free( c->c_sb );
738 c->c_sb = ber_sockbuf_alloc( );
741 ber_len_t max = sockbuf_max_incoming;
742 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
745 c->c_conn_state = SLAP_C_INVALID;
746 c->c_struct_state = SLAP_C_UNUSED;
749 /* call destructors, then constructors; avoids unnecessary allocation */
750 if ( slapi_plugins_used ) {
751 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
756 int connection_state_closing( Connection *c )
758 /* c_mutex must be locked by caller */
762 assert( c->c_struct_state == SLAP_C_USED );
764 state = c->c_conn_state;
766 assert( state != SLAP_C_INVALID );
768 return state == SLAP_C_CLOSING;
771 static void connection_abandon( Connection *c )
773 /* c_mutex must be locked by caller */
777 LDAP_STAILQ_FOREACH( o, &c->c_ops, o_next ) {
781 /* remove pending operations */
782 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
783 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
784 LDAP_STAILQ_NEXT(o, o_next) = NULL;
789 void connection_closing( Connection *c )
791 assert( connections != NULL );
793 assert( c->c_struct_state == SLAP_C_USED );
794 assert( c->c_conn_state != SLAP_C_INVALID );
796 /* c_mutex must be locked by caller */
798 if( c->c_conn_state != SLAP_C_CLOSING ) {
801 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
803 LDAP_LOG( CONNECTION, DETAIL1,
804 "connection_closing: conn %lu readying socket %d for close.\n",
805 c->c_connid, sd, 0 );
807 Debug( LDAP_DEBUG_TRACE,
808 "connection_closing: readying conn=%lu sd=%d for close\n",
809 c->c_connid, sd, 0 );
811 /* update state to closing */
812 c->c_conn_state = SLAP_C_CLOSING;
814 /* don't listen on this port anymore */
815 slapd_clr_read( sd, 1 );
817 /* abandon active operations */
818 connection_abandon( c );
820 /* wake write blocked operations */
821 slapd_clr_write( sd, 1 );
822 ldap_pvt_thread_cond_signal( &c->c_write_cv );
826 static void connection_close( Connection *c )
830 assert( connections != NULL );
832 assert( c->c_struct_state == SLAP_C_USED );
833 assert( c->c_conn_state == SLAP_C_CLOSING );
835 /* note: connections_mutex and c_mutex should be locked by caller */
837 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
838 if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
840 LDAP_LOG( CONNECTION, DETAIL1,
841 "connection_close: conn %lu deferring sd %d\n",
842 c->c_connid, sd, 0 );
844 Debug( LDAP_DEBUG_TRACE,
845 "connection_close: deferring conn=%lu sd=%d\n",
846 c->c_connid, sd, 0 );
852 LDAP_LOG( CONNECTION, RESULTS,
853 "connection_close: conn %lu sd %d\n", c->c_connid, sd, 0 );
855 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
856 c->c_connid, sd, 0 );
858 connection_destroy( c );
861 unsigned long connections_nextid(void)
864 assert( connections != NULL );
866 ldap_pvt_thread_mutex_lock( &connections_mutex );
870 ldap_pvt_thread_mutex_unlock( &connections_mutex );
875 Connection* connection_first( ber_socket_t *index )
877 assert( connections != NULL );
878 assert( index != NULL );
880 ldap_pvt_thread_mutex_lock( &connections_mutex );
884 return connection_next(NULL, index);
887 Connection* connection_next( Connection *c, ber_socket_t *index )
889 assert( connections != NULL );
890 assert( index != NULL );
891 assert( *index <= dtblsize );
894 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
899 for(; *index < dtblsize; (*index)++) {
900 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
901 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
909 if( connections[*index].c_struct_state == SLAP_C_USED ) {
910 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
911 c = &connections[(*index)++];
915 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
916 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
920 ldap_pvt_thread_mutex_lock( &c->c_mutex );
926 void connection_done( Connection *c )
928 assert( connections != NULL );
931 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
934 ldap_pvt_thread_mutex_unlock( &connections_mutex );
938 * connection_activity - handle the request operation op on connection
939 * conn. This routine figures out what kind of operation it is and
940 * calls the appropriate stub to handle it.
944 #define INCR_OP(var,index) \
946 ldap_pvt_thread_mutex_lock( &num_ops_mutex ); \
948 ldap_pvt_thread_mutex_unlock( &num_ops_mutex ); \
950 #else /* !SLAPD_MONITOR */
951 #define INCR_OP(var,index)
952 #endif /* !SLAPD_MONITOR */
955 connection_operation( void *ctx, void *arg_v )
958 Operation *op = arg_v;
959 SlapReply rs = {REP_RESULT};
960 ber_tag_t tag = op->o_tag;
962 ber_tag_t oldtag = tag;
963 #endif /* SLAPD_MONITOR */
964 Connection *conn = op->o_conn;
966 void *memctx_null = NULL;
969 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
971 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
973 op->o_threadctx = ctx;
977 case LDAP_REQ_UNBIND:
979 case LDAP_REQ_DELETE:
980 case LDAP_REQ_MODRDN:
981 case LDAP_REQ_MODIFY:
982 case LDAP_REQ_COMPARE:
983 case LDAP_REQ_SEARCH:
984 case LDAP_REQ_ABANDON:
985 case LDAP_REQ_EXTENDED:
989 LDAP_LOG( CONNECTION, INFO, "connection_operation: "
990 "conn %lu unknown LDAP request 0x%lx\n",
991 conn->c_connid, tag, 0 );
993 Debug( LDAP_DEBUG_ANY, "connection_operation: "
994 "conn %lu unknown LDAP request 0x%lx\n",
995 conn->c_connid, tag, 0 );
997 op->o_tag = LBER_ERROR;
998 rs.sr_err = LDAP_PROTOCOL_ERROR;
999 rs.sr_text = "unknown LDAP request";
1000 send_ldap_disconnect( op, &rs );
1001 rc = SLAPD_DISCONNECT;
1002 goto operations_error;
1005 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
1007 LDAP_LOG( CONNECTION, ERR,
1008 "connection_operation: conn %lu SASL bind in progress (tag=%ld).\n",
1009 conn->c_connid, (long)tag, 0 );
1011 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1012 "error: SASL bind in progress (tag=%ld).\n",
1015 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1016 "SASL bind in progress" );
1017 rc = LDAP_OPERATIONS_ERROR;
1018 goto operations_error;
1021 /* We can use Thread-Local storage for most mallocs. We can
1022 * also use TL for ber parsing, but not on Add or Modify.
1025 memsiz = ber_len( op->o_ber ) * 64;
1026 if ( SLMALLOC_SLAB_SIZE > memsiz ) memsiz = SLMALLOC_SLAB_SIZE;
1028 memsiz = SLMALLOC_SLAB_SIZE;
1030 memctx = sl_mem_create( memsiz, ctx );
1031 op->o_tmpmemctx = memctx;
1032 op->o_tmpmfuncs = &sl_mfuncs;
1033 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1034 /* Note - the ber and its buffer are already allocated from
1035 * regular memory; this only affects subsequent mallocs that
1036 * ber_scanf may invoke.
1038 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1043 INCR_OP(num_ops_initiated_, SLAP_OP_BIND);
1044 rc = do_bind( op, &rs );
1047 case LDAP_REQ_UNBIND:
1048 INCR_OP(num_ops_initiated_, SLAP_OP_UNBIND);
1049 rc = do_unbind( op, &rs );
1053 INCR_OP(num_ops_initiated_, SLAP_OP_ADD);
1054 rc = do_add( op, &rs );
1057 case LDAP_REQ_DELETE:
1058 INCR_OP(num_ops_initiated_, SLAP_OP_DELETE);
1059 rc = do_delete( op, &rs );
1062 case LDAP_REQ_MODRDN:
1063 INCR_OP(num_ops_initiated_, SLAP_OP_MODRDN);
1064 rc = do_modrdn( op, &rs );
1067 case LDAP_REQ_MODIFY:
1068 INCR_OP(num_ops_initiated_, SLAP_OP_MODIFY);
1069 rc = do_modify( op, &rs );
1072 case LDAP_REQ_COMPARE:
1073 INCR_OP(num_ops_initiated_, SLAP_OP_COMPARE);
1074 rc = do_compare( op, &rs );
1077 case LDAP_REQ_SEARCH:
1078 INCR_OP(num_ops_initiated_, SLAP_OP_SEARCH);
1079 rc = do_search( op, &rs );
1082 case LDAP_REQ_ABANDON:
1083 INCR_OP(num_ops_initiated_, SLAP_OP_ABANDON);
1084 rc = do_abandon( op, &rs );
1087 case LDAP_REQ_EXTENDED:
1088 INCR_OP(num_ops_initiated_, SLAP_OP_EXTENDED);
1089 rc = do_extended( op, &rs );
1098 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
1100 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
1102 num_ops_completed++;
1103 #ifdef SLAPD_MONITOR
1106 num_ops_completed_[SLAP_OP_BIND]++;
1108 case LDAP_REQ_UNBIND:
1109 num_ops_completed_[SLAP_OP_UNBIND]++;
1112 num_ops_completed_[SLAP_OP_ADD]++;
1114 case LDAP_REQ_DELETE:
1115 num_ops_completed_[SLAP_OP_DELETE]++;
1117 case LDAP_REQ_MODRDN:
1118 num_ops_completed_[SLAP_OP_MODRDN]++;
1120 case LDAP_REQ_MODIFY:
1121 num_ops_completed_[SLAP_OP_MODIFY]++;
1123 case LDAP_REQ_COMPARE:
1124 num_ops_completed_[SLAP_OP_COMPARE]++;
1126 case LDAP_REQ_SEARCH:
1127 num_ops_completed_[SLAP_OP_SEARCH]++;
1129 case LDAP_REQ_ABANDON:
1130 num_ops_completed_[SLAP_OP_ABANDON]++;
1132 case LDAP_REQ_EXTENDED:
1133 num_ops_completed_[SLAP_OP_EXTENDED]++;
1136 /* this is reachable */
1139 #endif /* SLAPD_MONITOR */
1140 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
1142 if ( op->o_cancel == SLAP_CANCEL_REQ ) {
1143 op->o_cancel = LDAP_TOO_LATE;
1145 while ( op->o_cancel != SLAP_CANCEL_NONE &&
1146 op->o_cancel != SLAP_CANCEL_DONE )
1148 ldap_pvt_thread_yield();
1151 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1153 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1155 if ( op->o_cancel != SLAP_CANCEL_ACK &&
1156 ( op->o_sync_mode & SLAP_SYNC_PERSIST ) )
1158 sl_mem_detach( ctx, memctx );
1160 } else if ( op->o_sync_slog_size != -1 ) {
1161 sl_mem_detach( ctx, memctx );
1162 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1163 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1164 conn->c_n_ops_executing--;
1165 conn->c_n_ops_completed++;
1168 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1169 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1171 conn->c_n_ops_executing--;
1172 conn->c_n_ops_completed++;
1177 case LDAP_REQ_UNBIND:
1178 /* c_mutex is locked */
1179 connection_closing( conn );
1183 conn->c_sasl_bind_in_progress =
1184 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
1186 if( conn->c_conn_state == SLAP_C_BINDING) {
1187 conn->c_conn_state = SLAP_C_ACTIVE;
1191 connection_resched( conn );
1192 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1196 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1198 int connection_client_setup(
1200 ldap_pvt_thread_start_t *func,
1206 rc = connection_init( s, (Listener *)&dummy_list, "", "",
1207 CONN_IS_CLIENT, 0, NULL );
1208 if ( rc < 0 ) return -1;
1210 c = connection_get( s );
1211 c->c_clientfunc = func;
1212 c->c_clientarg = arg;
1213 connection_return( c );
1214 slapd_add_internal( s, 0 );
1215 slapd_set_read( s, 1 );
1219 void connection_client_enable(
1222 slapd_set_read( s, 1 );
1225 void connection_client_stop(
1230 /* get (locked) connection */
1231 c = connection_get( s );
1233 assert( c->c_conn_state == SLAP_C_CLIENT );
1235 c->c_listener = NULL;
1236 c->c_conn_state = SLAP_C_INVALID;
1237 c->c_struct_state = SLAP_C_UNUSED;
1238 connection_return( c );
1239 slapd_remove( s, 0, 1 );
1242 int connection_read(ber_socket_t s)
1247 assert( connections != NULL );
1249 ldap_pvt_thread_mutex_lock( &connections_mutex );
1251 /* get (locked) connection */
1252 c = connection_get( s );
1256 LDAP_LOG( CONNECTION, INFO,
1257 "connection_read: sock %ld no connection\n", (long)s, 0, 0 );
1259 Debug( LDAP_DEBUG_ANY,
1260 "connection_read(%ld): no connection!\n",
1263 slapd_remove(s, 1, 0);
1265 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1271 if( c->c_conn_state == SLAP_C_CLOSING ) {
1273 LDAP_LOG( CONNECTION, INFO,
1274 "connection_read: conn %lu connection closing, ignoring input\n",
1275 c->c_connid, 0, 0 );
1277 Debug( LDAP_DEBUG_TRACE,
1278 "connection_read(%d): closing, ignoring input for id=%lu\n",
1279 s, c->c_connid, 0 );
1281 connection_return( c );
1282 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1286 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1287 slapd_clr_read( s, 0 );
1288 ldap_pvt_thread_pool_submit( &connection_pool,
1289 c->c_clientfunc, c->c_clientarg );
1290 connection_return( c );
1291 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1296 LDAP_LOG( CONNECTION, DETAIL1,
1297 "connection_read: conn %lu checking for input.\n",
1298 c->c_connid, 0, 0 );
1300 Debug( LDAP_DEBUG_TRACE,
1301 "connection_read(%d): checking for input on id=%lu\n",
1302 s, c->c_connid, 0 );
1306 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1307 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1309 #if 0 /* required by next #if 0 */
1315 LDAP_LOG( CONNECTION, ERR,
1316 "connection_read: conn %lu TLS accept error, error %d\n",
1317 c->c_connid, rc, 0 );
1319 Debug( LDAP_DEBUG_TRACE,
1320 "connection_read(%d): TLS accept error "
1321 "error=%d id=%lu, closing\n",
1322 s, rc, c->c_connid );
1324 c->c_needs_tls_accept = 0;
1325 /* connections_mutex and c_mutex are locked */
1326 connection_closing( c );
1329 /* Drain input before close, to allow SSL error codes
1330 * to propagate to client. */
1336 rc = select(s+1, &rfd, NULL, NULL, &tv);
1338 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN, NULL);
1342 connection_close( c );
1344 } else if ( rc == 0 ) {
1346 struct berval authid = BER_BVNULL;
1348 c->c_needs_tls_accept = 0;
1350 /* we need to let SASL know */
1351 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1353 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1354 if( c->c_tls_ssf > c->c_ssf ) {
1355 c->c_ssf = c->c_tls_ssf;
1358 rc = dnX509peerNormalize( ssl, &authid );
1359 if ( rc != LDAP_SUCCESS ) {
1361 LDAP_LOG( CONNECTION, INFO, "connection_read: "
1362 "conn %lu unable to get TLS client DN, error %d\n",
1363 c->c_connid, rc, 0 );
1365 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1366 "unable to get TLS client DN, error=%d id=%lu\n",
1367 s, rc, c->c_connid );
1370 slap_sasl_external( c, c->c_tls_ssf, &authid );
1371 if ( authid.bv_val ) free( authid.bv_val );
1374 /* if success and data is ready, fall thru to data input loop */
1376 !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1378 connection_return( c );
1379 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1385 #ifdef HAVE_CYRUS_SASL
1386 if ( c->c_sasl_layers ) {
1387 /* If previous layer is not removed yet, give up for now */
1388 if ( !c->c_sasl_sockctx ) {
1389 connection_return( c );
1390 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1394 c->c_sasl_layers = 0;
1396 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1398 if( rc != LDAP_SUCCESS ) {
1400 LDAP_LOG( CONNECTION, ERR,
1401 "connection_read: conn %lu SASL install error %d, closing\n",
1402 c->c_connid, rc, 0 );
1404 Debug( LDAP_DEBUG_TRACE,
1405 "connection_read(%d): SASL install error "
1406 "error=%d id=%lu, closing\n",
1407 s, rc, c->c_connid );
1409 /* connections_mutex and c_mutex are locked */
1410 connection_closing( c );
1411 connection_close( c );
1412 connection_return( c );
1413 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1419 #define CONNECTION_INPUT_LOOP 1
1420 /* #define DATA_READY_LOOP 1 */
1423 /* How do we do this without getting into a busy loop ? */
1424 rc = connection_input( c );
1426 #ifdef DATA_READY_LOOP
1427 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1428 #elif CONNECTION_INPUT_LOOP
1436 LDAP_LOG( CONNECTION, ERR,
1437 "connection_read: conn %lu input error %d, closing.\n",
1438 c->c_connid, rc, 0 );
1440 Debug( LDAP_DEBUG_TRACE,
1441 "connection_read(%d): input error=%d id=%lu, closing.\n",
1442 s, rc, c->c_connid );
1444 /* connections_mutex and c_mutex are locked */
1445 connection_closing( c );
1446 connection_close( c );
1447 connection_return( c );
1448 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1452 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1453 slapd_set_read( s, 1 );
1456 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1457 slapd_set_write( s, 1 );
1460 connection_return( c );
1461 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1475 #ifdef LDAP_CONNECTIONLESS
1481 if ( conn->c_currentber == NULL &&
1482 ( conn->c_currentber = ber_alloc()) == NULL )
1485 LDAP_LOG( CONNECTION, ERR,
1486 "connection_input: conn %lu ber_alloc failed.\n",
1487 conn->c_connid, 0, 0 );
1489 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1496 #ifdef LDAP_CONNECTIONLESS
1497 if ( conn->c_is_udp ) {
1498 char peername[sizeof("IP=255.255.255.255:65336")];
1499 len = ber_int_sb_read(conn->c_sb, &peeraddr,
1500 sizeof(struct sockaddr));
1501 if (len != sizeof(struct sockaddr))
1503 sprintf( peername, "IP=%s:%d",
1504 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1505 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1506 Statslog( LDAP_DEBUG_STATS,
1507 "conn=%lu UDP request from %s (%s) accepted.\n",
1508 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1511 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1512 if ( tag != LDAP_TAG_MESSAGE ) {
1516 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1519 LDAP_LOG( CONNECTION, ERR,
1520 "connection_input: conn %lu ber_get_next failed, errno %d (%s).\n",
1521 conn->c_connid, err, sock_errstr(err) );
1523 Debug( LDAP_DEBUG_TRACE,
1524 "ber_get_next on fd %d failed errno=%d (%s)\n",
1525 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 */
1543 LDAP_LOG( CONNECTION, ERR,
1544 "connection_input: conn %lu ber_get_int returns 0x%lx.\n",
1545 conn->c_connid, tag, 0 );
1547 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n",
1554 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1555 /* log, close and send error */
1557 LDAP_LOG( CONNECTION, ERR,
1558 "connection_input: conn %lu ber_peek_tag returns 0x%lx.\n",
1559 conn->c_connid, tag, 0 );
1561 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n",
1569 #ifdef LDAP_CONNECTIONLESS
1570 if( conn->c_is_udp ) {
1571 if( tag == LBER_OCTETSTRING ) {
1572 ber_get_stringa( ber, &cdn );
1573 tag = ber_peek_tag(ber, &len);
1575 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1577 LDAP_LOG( CONNECTION, ERR,
1578 "connection_input: conn %lu invalid req for UDP 0x%lx.\n",
1579 conn->c_connid, tag, 0 );
1581 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1588 if(tag == LDAP_REQ_BIND) {
1589 /* immediately abandon all exiting operations upon BIND */
1590 connection_abandon( conn );
1593 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1596 op->o_assertion = NULL;
1597 op->o_preread_attrs = NULL;
1598 op->o_postread_attrs = NULL;
1599 op->o_vrFilter = NULL;
1600 /* clear state if the connection is being reused from inactive */
1601 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1602 memset( &conn->c_pagedresults_state, 0, sizeof( conn->c_pagedresults_state ) );
1604 op->o_pagedresults_state = conn->c_pagedresults_state;
1606 op->o_res_ber = NULL;
1608 #ifdef LDAP_CONNECTIONLESS
1609 if (conn->c_is_udp) {
1611 ber_str2bv( cdn, 0, 1, &op->o_dn );
1612 op->o_protocol = LDAP_VERSION2;
1614 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1615 if (op->o_res_ber == NULL) return 1;
1617 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1618 sizeof(struct sockaddr), 0 );
1620 if (rc != sizeof(struct sockaddr)) {
1622 LDAP_LOG( CONNECTION, INFO,
1623 "connection_input: conn %lu ber_write failed\n",
1624 conn->c_connid, 0, 0 );
1626 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1631 if (op->o_protocol == LDAP_VERSION2) {
1632 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1635 LDAP_LOG( CONNECTION, INFO,
1636 "connection_input: conn %lu put outer sequence failed\n",
1637 conn->c_connid, 0, 0 );
1639 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1645 #endif /* LDAP_CONNECTIONLESS */
1649 /* Don't process requests when the conn is in the middle of a
1650 * Bind, or if it's closing. Also, don't let any single conn
1651 * use up all the available threads, and don't execute if we're
1652 * currently blocked on output. And don't execute if there are
1653 * already pending ops, let them go first. Abandon operations
1654 * get exceptions to some, but not all, cases.
1656 if (tag != LDAP_REQ_ABANDON && conn->c_conn_state == SLAP_C_CLOSING) {
1658 } else if (tag != LDAP_REQ_ABANDON && conn->c_writewaiter) {
1659 defer = "awaiting write";
1660 } else if (conn->c_n_ops_executing >= connection_pool_max/2) {
1661 defer = "too many executing";
1662 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1664 } else if (tag != LDAP_REQ_ABANDON && conn->c_n_ops_pending) {
1665 defer = "pending operations";
1669 int max = conn->c_dn.bv_len
1670 ? slap_conn_max_pending_auth
1671 : slap_conn_max_pending;
1674 LDAP_LOG( CONNECTION, INFO,
1675 "connection_input: conn %lu deferring operation: %s\n",
1676 conn->c_connid, defer, 0 );
1678 Debug( LDAP_DEBUG_ANY,
1679 "connection_input: conn=%lu deferring operation: %s\n",
1680 conn->c_connid, defer, 0 );
1682 conn->c_n_ops_pending++;
1683 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1684 if ( conn->c_n_ops_pending > max ) {
1690 conn->c_n_ops_executing++;
1691 connection_op_activate( op );
1695 if ( conn->c_struct_state != SLAP_C_USED ) {
1696 /* connection must have got closed underneath us */
1700 assert( conn->c_struct_state == SLAP_C_USED );
1706 connection_resched( Connection *conn )
1710 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1713 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1715 /* us trylock to avoid possible deadlock */
1716 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1720 LDAP_LOG( CONNECTION, DETAIL1,
1721 "connection_resched: conn %lu reaquiring locks.\n",
1722 conn->c_connid, 0, 0 );
1724 Debug( LDAP_DEBUG_TRACE,
1725 "connection_resched: reaquiring locks conn=%lu sd=%d\n",
1726 conn->c_connid, sd, 0 );
1729 * reaquire locks in the right order...
1730 * this may allow another thread to close this connection,
1731 * so recheck state below.
1733 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1734 ldap_pvt_thread_mutex_lock( &connections_mutex );
1735 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1738 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1740 LDAP_LOG( CONNECTION, INFO,
1741 "connection_resched: conn %lu closed by other thread.\n",
1742 conn->c_connid, 0, 0 );
1744 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1745 "closed by other thread conn=%lu sd=%d\n",
1746 conn->c_connid, sd, 0 );
1750 LDAP_LOG( CONNECTION, DETAIL1,
1751 "connection_resched: conn %lu attempting closing.\n",
1752 conn->c_connid, 0, 0 );
1754 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1755 "attempting closing conn=%lu sd=%d\n",
1756 conn->c_connid, sd, 0 );
1758 connection_close( conn );
1761 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1765 if( conn->c_conn_state != SLAP_C_ACTIVE || conn->c_writewaiter ) {
1766 /* other states need different handling */
1770 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1771 if ( conn->c_n_ops_executing > connection_pool_max/2 ) {
1774 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1775 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1776 /* pending operations should not be marked for abandonment */
1777 assert(!op->o_abandon);
1779 conn->c_n_ops_pending--;
1780 conn->c_n_ops_executing++;
1782 connection_op_activate( op );
1784 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1791 static int connection_op_activate( Operation *op )
1794 ber_tag_t tag = op->o_tag;
1796 if(tag == LDAP_REQ_BIND) {
1797 op->o_conn->c_conn_state = SLAP_C_BINDING;
1800 if (!op->o_dn.bv_len) {
1801 op->o_authz = op->o_conn->c_authz;
1802 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1803 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1805 op->o_authtype = op->o_conn->c_authtype;
1806 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1808 if (!op->o_protocol) {
1809 op->o_protocol = op->o_conn->c_protocol
1810 ? op->o_conn->c_protocol : LDAP_VERSION3;
1812 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE
1813 && op->o_protocol > LDAP_VERSION2)
1815 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1818 op->o_connid = op->o_conn->c_connid;
1820 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1822 status = ldap_pvt_thread_pool_submit( &connection_pool,
1823 connection_operation, (void *) op );
1825 if ( status != 0 ) {
1827 LDAP_LOG( CONNECTION, ERR,
1828 "connection_op_activate: conn %lu thread pool submit failed.\n",
1829 op->o_connid, 0, 0 );
1831 Debug( LDAP_DEBUG_ANY,
1832 "ldap_pvt_thread_pool_submit: failed (%d) for conn=%lu\n",
1833 status, op->o_connid, 0 );
1835 /* should move op to pending list */
1841 int connection_write(ber_socket_t s)
1845 assert( connections != NULL );
1847 ldap_pvt_thread_mutex_lock( &connections_mutex );
1849 c = connection_get( s );
1851 slapd_clr_write( s, 0);
1855 LDAP_LOG( CONNECTION, ERR,
1856 "connection_write: sock %ld no connection!\n", (long)s, 0, 0);
1858 Debug( LDAP_DEBUG_ANY,
1859 "connection_write(%ld): no connection!\n",
1862 slapd_remove(s, 1, 0);
1863 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1870 LDAP_LOG( CONNECTION, DETAIL1,
1871 "connection_write conn %lu waking output.\n", c->c_connid, 0, 0 );
1873 Debug( LDAP_DEBUG_TRACE,
1874 "connection_write(%d): waking output for id=%lu\n",
1875 s, c->c_connid, 0 );
1877 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1879 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1880 slapd_set_read( s, 1 );
1882 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1883 slapd_set_write( s, 1 );
1885 connection_return( c );
1886 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1891 connection_fake_init(
1896 conn->c_connid = -1;
1897 conn->c_send_ldap_result = slap_send_ldap_result;
1898 conn->c_send_search_entry = slap_send_search_entry;
1899 conn->c_send_search_reference = slap_send_search_reference;
1900 conn->c_listener = (Listener *)&dummy_list;
1901 conn->c_peer_domain = slap_empty_bv;
1902 conn->c_peer_name = slap_empty_bv;
1904 /* set memory context */
1905 op->o_tmpmemctx = sl_mem_create( SLMALLOC_SLAB_SIZE, ctx );
1906 op->o_tmpmfuncs = &sl_mfuncs;
1907 op->o_threadctx = ctx;
1910 op->o_connid = op->o_conn->c_connid;
1912 op->o_time = slap_get_time();
1916 connection_assign_nextid( Connection *conn )
1918 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
1919 conn->c_connid = conn_nextid++;
1920 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );