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;
48 static unsigned long conn_nextid = 0;
50 /* structure state (protected by connections_mutex) */
51 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
52 #define SLAP_C_UNUSED 0x01
53 #define SLAP_C_USED 0x02
55 /* connection state (protected by c_mutex ) */
56 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
57 #define SLAP_C_INACTIVE 0x01 /* zero threads */
58 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
59 #define SLAP_C_BINDING 0x03 /* binding */
60 #define SLAP_C_CLOSING 0x04 /* closing */
61 #define SLAP_C_CLIENT 0x05 /* outbound client conn */
64 connection_state2str( int state )
67 case SLAP_C_INVALID: return "!";
68 case SLAP_C_INACTIVE: return "|";
69 case SLAP_C_ACTIVE: return "";
70 case SLAP_C_BINDING: return "B";
71 case SLAP_C_CLOSING: return "C";
72 case SLAP_C_CLIENT: return "L";
78 static Connection* connection_get( ber_socket_t s );
80 static int connection_input( Connection *c );
81 static void connection_close( Connection *c );
83 static int connection_op_activate( Operation *op );
84 static int connection_resched( Connection *conn );
85 static void connection_abandon( Connection *conn );
86 static void connection_destroy( Connection *c );
88 static ldap_pvt_thread_start_t connection_operation;
91 * Initialize connection management infrastructure.
93 int connections_init(void)
97 assert( connections == NULL );
99 if( connections != NULL) {
101 LDAP_LOG( CONNECTION, INFO,
102 "connections_init: already initialized.\n", 0, 0, 0 );
104 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
110 /* should check return of every call */
111 ldap_pvt_thread_mutex_init( &connections_mutex );
113 connections = (Connection *) ch_calloc( dtblsize, sizeof(Connection) );
115 if( connections == NULL ) {
117 LDAP_LOG( CONNECTION, ERR,
118 "connections_init: allocation (%d * %ld) of connection "
119 "array failed\n", dtblsize, (long) sizeof(Connection), 0 );
121 Debug( LDAP_DEBUG_ANY,
122 "connections_init: allocation (%d*%ld) of connection array failed\n",
123 dtblsize, (long) sizeof(Connection), 0 );
128 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
129 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
131 for (i=0; i<dtblsize; i++) connections[i].c_conn_idx = i;
134 * per entry initialization of the Connection array initialization
135 * will be done by connection_init()
142 * Destroy connection management infrastructure.
144 int connections_destroy(void)
148 /* should check return of every call */
150 if( connections == NULL) {
152 LDAP_LOG( CONNECTION, INFO,
153 "connections_destroy: nothing to destroy.\n", 0, 0, 0 );
155 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
161 for ( i = 0; i < dtblsize; i++ ) {
162 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
163 ber_sockbuf_free( connections[i].c_sb );
164 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
165 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
166 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
168 if ( slapi_plugins_used ) {
169 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION, &connections[i] );
178 ldap_pvt_thread_mutex_destroy( &connections_mutex );
183 * shutdown all connections
185 int connections_shutdown(void)
189 ldap_pvt_thread_mutex_lock( &connections_mutex );
191 for ( i = 0; i < dtblsize; i++ ) {
192 if( connections[i].c_struct_state != SLAP_C_USED ) {
195 /* give persistent clients a chance to cleanup */
196 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
197 ldap_pvt_thread_pool_submit( &connection_pool,
198 connections[i].c_clientfunc, connections[i].c_clientarg );
202 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
204 /* connections_mutex and c_mutex are locked */
205 connection_closing( &connections[i] );
206 connection_close( &connections[i] );
208 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
211 ldap_pvt_thread_mutex_unlock( &connections_mutex );
217 * Timeout idle connections.
219 int connections_timeout_idle(time_t now)
225 for( c = connection_first( &connindex );
227 c = connection_next( c, &connindex ) )
229 /* Don't timeout a slow-running request or a persistent
230 * outbound connection */
231 if( c->c_n_ops_executing ||
232 c->c_conn_state == SLAP_C_CLIENT ) continue;
234 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
236 connection_closing( c );
237 connection_close( c );
241 connection_done( c );
246 static Connection* connection_get( ber_socket_t s )
248 /* connections_mutex should be locked by caller */
253 LDAP_LOG( CONNECTION, ENTRY, "connection_get: socket %ld\n", (long)s, 0, 0 );
255 Debug( LDAP_DEBUG_ARGS,
256 "connection_get(%ld)\n",
260 assert( connections != NULL );
262 if(s == AC_SOCKET_INVALID) {
269 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
276 for(i=0; i<dtblsize; i++) {
277 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
278 assert( connections[i].c_conn_state == SLAP_C_INVALID );
279 assert( connections[i].c_sb == 0 );
283 ber_sockbuf_ctrl( connections[i].c_sb,
284 LBER_SB_OPT_GET_FD, &sd );
286 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
287 assert( connections[i].c_conn_state == SLAP_C_INVALID );
288 assert( sd == AC_SOCKET_INVALID );
292 /* state can actually change from used -> unused by resched,
293 * so don't assert details here.
307 ldap_pvt_thread_mutex_lock( &c->c_mutex );
309 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
310 if( c->c_struct_state != SLAP_C_USED ) {
311 /* connection must have been closed due to resched */
313 assert( c->c_conn_state == SLAP_C_INVALID );
314 assert( sd == AC_SOCKET_INVALID );
317 LDAP_LOG( CONNECTION, ARGS,
318 "connection_get: connection %d not used\n", s, 0, 0 );
320 Debug( LDAP_DEBUG_TRACE,
321 "connection_get(%d): connection not used\n",
325 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
330 LDAP_LOG( CONNECTION, RESULTS,
331 "connection_get: get for %d got connid %lu\n", s, c->c_connid, 0 );
333 Debug( LDAP_DEBUG_TRACE,
334 "connection_get(%d): got connid=%lu\n",
340 assert( c->c_struct_state == SLAP_C_USED );
341 assert( c->c_conn_state != SLAP_C_INVALID );
342 assert( sd != AC_SOCKET_INVALID );
345 c->c_activitytime = slap_get_time();
347 if( global_idletimeout > 0 ) {
348 c->c_activitytime = slap_get_time();
356 static void connection_return( Connection *c )
358 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
361 long connection_init(
365 const char* peername,
368 struct berval *authid )
373 assert( connections != NULL );
375 assert( listener != NULL );
376 assert( dnsname != NULL );
377 assert( peername != NULL );
380 assert( flags != CONN_IS_TLS );
383 if( s == AC_SOCKET_INVALID ) {
385 LDAP_LOG( CONNECTION, INFO,
386 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
388 Debug( LDAP_DEBUG_ANY,
389 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
396 assert( s < dtblsize );
399 ldap_pvt_thread_mutex_lock( &connections_mutex );
409 for( i=0; i < dtblsize; i++) {
412 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
413 assert( connections[i].c_sb == 0 );
418 sd = AC_SOCKET_INVALID;
419 if (connections[i].c_sb != NULL) {
420 ber_sockbuf_ctrl( connections[i].c_sb,
421 LBER_SB_OPT_GET_FD, &sd );
424 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
425 assert( sd == AC_SOCKET_INVALID );
430 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
434 assert( connections[i].c_struct_state == SLAP_C_USED );
435 assert( connections[i].c_conn_state != SLAP_C_INVALID );
436 assert( sd != AC_SOCKET_INVALID );
441 LDAP_LOG( CONNECTION, INFO,
442 "connection_init(%d): connection table full "
443 "(%d/%d)\n", s, i, dtblsize );
445 Debug( LDAP_DEBUG_ANY,
446 "connection_init(%d): connection table full "
447 "(%d/%d)\n", s, i, dtblsize);
449 ldap_pvt_thread_mutex_unlock( &connections_mutex );
457 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
458 c->c_send_ldap_result = slap_send_ldap_result;
459 c->c_send_search_entry = slap_send_search_entry;
460 c->c_send_search_reference = slap_send_search_reference;
461 c->c_send_ldap_extended = slap_send_ldap_extended;
462 #ifdef LDAP_RES_INTERMEDIATE
463 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
466 c->c_authmech.bv_val = NULL;
467 c->c_authmech.bv_len = 0;
468 c->c_dn.bv_val = NULL;
470 c->c_ndn.bv_val = NULL;
473 c->c_listener = NULL;
474 c->c_peer_domain.bv_val = NULL;
475 c->c_peer_domain.bv_len = 0;
476 c->c_peer_name.bv_val = NULL;
477 c->c_peer_name.bv_len = 0;
479 LDAP_STAILQ_INIT(&c->c_ops);
480 LDAP_STAILQ_INIT(&c->c_pending_ops);
482 c->c_sasl_bind_mech.bv_val = NULL;
483 c->c_sasl_bind_mech.bv_len = 0;
485 c->c_sasl_authctx = NULL;
486 c->c_sasl_sockctx = NULL;
487 c->c_sasl_extra = NULL;
488 c->c_sasl_bindop = NULL;
490 c->c_sb = ber_sockbuf_alloc( );
493 ber_len_t max = sockbuf_max_incoming;
494 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
497 c->c_currentber = NULL;
499 /* should check status of thread calls */
500 ldap_pvt_thread_mutex_init( &c->c_mutex );
501 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
502 ldap_pvt_thread_cond_init( &c->c_write_cv );
505 if ( slapi_plugins_used ) {
506 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
510 c->c_struct_state = SLAP_C_UNUSED;
513 ldap_pvt_thread_mutex_lock( &c->c_mutex );
515 assert( c->c_struct_state == SLAP_C_UNUSED );
516 assert( c->c_authmech.bv_val == NULL );
517 assert( c->c_dn.bv_val == NULL );
518 assert( c->c_ndn.bv_val == NULL );
519 assert( c->c_listener == NULL );
520 assert( c->c_peer_domain.bv_val == NULL );
521 assert( c->c_peer_name.bv_val == NULL );
522 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
523 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
524 assert( c->c_sasl_bind_mech.bv_val == NULL );
525 assert( c->c_sasl_done == 0 );
526 assert( c->c_sasl_authctx == NULL );
527 assert( c->c_sasl_sockctx == NULL );
528 assert( c->c_sasl_extra == NULL );
529 assert( c->c_sasl_bindop == NULL );
530 assert( c->c_currentber == NULL );
531 assert( c->c_writewaiter == 0);
533 c->c_listener = listener;
535 if ( flags == CONN_IS_CLIENT ) {
536 c->c_conn_state = SLAP_C_CLIENT;
537 c->c_struct_state = SLAP_C_USED;
538 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &s );
539 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
540 ldap_pvt_thread_mutex_unlock( &connections_mutex );
545 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
546 ber_str2bv( peername, 0, 1, &c->c_peer_name );
548 c->c_n_ops_received = 0;
549 c->c_n_ops_executing = 0;
550 c->c_n_ops_pending = 0;
551 c->c_n_ops_completed = 0;
557 /* set to zero until bind, implies LDAP_VERSION3 */
561 c->c_activitytime = c->c_starttime = slap_get_time();
563 if( global_idletimeout > 0 ) {
564 c->c_activitytime = c->c_starttime = slap_get_time();
568 #ifdef LDAP_CONNECTIONLESS
570 if( flags == CONN_IS_UDP ) {
573 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
574 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
576 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
577 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
578 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
579 LBER_SBIOD_LEVEL_PROVIDER, NULL );
584 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
585 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
587 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
588 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
592 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
593 INT_MAX, (void*)"ldap_" );
596 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
597 c /* non-NULL */ ) < 0 )
600 LDAP_LOG( CONNECTION, INFO,
601 "connection_init: conn %lu set nonblocking failed\n",
604 Debug( LDAP_DEBUG_ANY,
605 "connection_init(%d, %s): set nonblocking failed\n",
606 s, c->c_peer_name.bv_val, 0 );
610 id = c->c_connid = conn_nextid++;
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);
651 c->c_authmech.bv_val = NULL;
653 c->c_authmech.bv_len = 0;
655 if(c->c_dn.bv_val != NULL) {
656 free(c->c_dn.bv_val);
657 c->c_dn.bv_val = NULL;
660 if(c->c_ndn.bv_val != NULL) {
661 free(c->c_ndn.bv_val);
662 c->c_ndn.bv_val = NULL;
666 c->c_authz_backend = NULL;
670 connection_destroy( Connection *c )
672 /* note: connections_mutex should be locked by caller */
674 unsigned long connid;
676 assert( connections != NULL );
678 assert( c->c_struct_state != SLAP_C_UNUSED );
679 assert( c->c_conn_state != SLAP_C_INVALID );
680 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
681 assert( c->c_writewaiter == 0);
683 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
684 connid = c->c_connid;
686 backend_connection_destroy(c);
691 c->c_activitytime = c->c_starttime = 0;
693 connection2anonymous( c );
694 c->c_listener = NULL;
696 if(c->c_peer_domain.bv_val != NULL) {
697 free(c->c_peer_domain.bv_val);
698 c->c_peer_domain.bv_val = NULL;
700 c->c_peer_domain.bv_len = 0;
701 if(c->c_peer_name.bv_val != NULL) {
702 free(c->c_peer_name.bv_val);
703 c->c_peer_name.bv_val = NULL;
705 c->c_peer_name.bv_len = 0;
707 c->c_sasl_bind_in_progress = 0;
708 if(c->c_sasl_bind_mech.bv_val != NULL) {
709 free(c->c_sasl_bind_mech.bv_val);
710 c->c_sasl_bind_mech.bv_val = NULL;
712 c->c_sasl_bind_mech.bv_len = 0;
714 slap_sasl_close( c );
716 if ( c->c_currentber != NULL ) {
717 ber_free( c->c_currentber, 1 );
718 c->c_currentber = NULL;
721 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
722 if ( sd != AC_SOCKET_INVALID ) {
723 slapd_remove( sd, 1, 0 );
725 Statslog( LDAP_DEBUG_STATS,
726 "conn=%lu fd=%ld closed\n",
727 connid, (long) sd, 0, 0, 0 );
730 ber_sockbuf_free( c->c_sb );
732 c->c_sb = ber_sockbuf_alloc( );
735 ber_len_t max = sockbuf_max_incoming;
736 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
739 c->c_conn_state = SLAP_C_INVALID;
740 c->c_struct_state = SLAP_C_UNUSED;
743 /* call destructors, then constructors; avoids unnecessary allocation */
744 if ( slapi_plugins_used ) {
745 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
750 int connection_state_closing( Connection *c )
752 /* c_mutex must be locked by caller */
756 assert( c->c_struct_state == SLAP_C_USED );
758 state = c->c_conn_state;
760 assert( state != SLAP_C_INVALID );
762 return state == SLAP_C_CLOSING;
765 static void connection_abandon( Connection *c )
767 /* c_mutex must be locked by caller */
771 LDAP_STAILQ_FOREACH(o, &c->c_ops, o_next) {
775 /* remove pending operations */
776 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
777 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
778 LDAP_STAILQ_NEXT(o, o_next) = NULL;
783 void connection_closing( Connection *c )
785 assert( connections != NULL );
787 assert( c->c_struct_state == SLAP_C_USED );
788 assert( c->c_conn_state != SLAP_C_INVALID );
790 /* c_mutex must be locked by caller */
792 if( c->c_conn_state != SLAP_C_CLOSING ) {
795 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
797 LDAP_LOG( CONNECTION, DETAIL1,
798 "connection_closing: conn %lu readying socket %d for close.\n",
799 c->c_connid, sd, 0 );
801 Debug( LDAP_DEBUG_TRACE,
802 "connection_closing: readying conn=%lu sd=%d for close\n",
803 c->c_connid, sd, 0 );
805 /* update state to closing */
806 c->c_conn_state = SLAP_C_CLOSING;
808 /* don't listen on this port anymore */
809 slapd_clr_read( sd, 1 );
811 /* abandon active operations */
812 connection_abandon( c );
814 /* wake write blocked operations */
815 slapd_clr_write( sd, 1 );
816 ldap_pvt_thread_cond_signal( &c->c_write_cv );
820 static void connection_close( Connection *c )
824 assert( connections != NULL );
826 assert( c->c_struct_state == SLAP_C_USED );
827 assert( c->c_conn_state == SLAP_C_CLOSING );
829 /* note: connections_mutex and c_mutex should be locked by caller */
831 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
832 if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
834 LDAP_LOG( CONNECTION, DETAIL1,
835 "connection_close: conn %lu deferring sd %d\n",
836 c->c_connid, sd, 0 );
838 Debug( LDAP_DEBUG_TRACE,
839 "connection_close: deferring conn=%lu sd=%d\n",
840 c->c_connid, sd, 0 );
846 LDAP_LOG( CONNECTION, RESULTS,
847 "connection_close: conn %lu sd %d\n", c->c_connid, sd, 0 );
849 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
850 c->c_connid, sd, 0 );
852 connection_destroy( c );
855 unsigned long connections_nextid(void)
858 assert( connections != NULL );
860 ldap_pvt_thread_mutex_lock( &connections_mutex );
864 ldap_pvt_thread_mutex_unlock( &connections_mutex );
869 Connection* connection_first( ber_socket_t *index )
871 assert( connections != NULL );
872 assert( index != NULL );
874 ldap_pvt_thread_mutex_lock( &connections_mutex );
878 return connection_next(NULL, index);
881 Connection* connection_next( Connection *c, ber_socket_t *index )
883 assert( connections != NULL );
884 assert( index != NULL );
885 assert( *index <= dtblsize );
888 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
893 for(; *index < dtblsize; (*index)++) {
894 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
895 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
903 if( connections[*index].c_struct_state == SLAP_C_USED ) {
904 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
905 c = &connections[(*index)++];
909 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
910 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
914 ldap_pvt_thread_mutex_lock( &c->c_mutex );
920 void connection_done( Connection *c )
922 assert( connections != NULL );
925 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
928 ldap_pvt_thread_mutex_unlock( &connections_mutex );
932 * connection_activity - handle the request operation op on connection
933 * conn. This routine figures out what kind of operation it is and
934 * calls the appropriate stub to handle it.
938 #define INCR_OP(var,index) \
940 ldap_pvt_thread_mutex_lock( &num_ops_mutex ); \
942 ldap_pvt_thread_mutex_unlock( &num_ops_mutex ); \
944 #else /* !SLAPD_MONITOR */
945 #define INCR_OP(var,index)
946 #endif /* !SLAPD_MONITOR */
949 connection_operation( void *ctx, void *arg_v )
952 Operation *op = arg_v;
953 SlapReply rs = {REP_RESULT};
954 ber_tag_t tag = op->o_tag;
956 ber_tag_t oldtag = tag;
957 #endif /* SLAPD_MONITOR */
958 Connection *conn = op->o_conn;
960 void *memctx_null = NULL;
963 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
965 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
967 op->o_threadctx = ctx;
971 case LDAP_REQ_UNBIND:
973 case LDAP_REQ_DELETE:
974 case LDAP_REQ_MODRDN:
975 case LDAP_REQ_MODIFY:
976 case LDAP_REQ_COMPARE:
977 case LDAP_REQ_SEARCH:
978 case LDAP_REQ_ABANDON:
979 case LDAP_REQ_EXTENDED:
983 LDAP_LOG( CONNECTION, INFO, "connection_operation: "
984 "conn %lu unknown LDAP request 0x%lx\n",
985 conn->c_connid, tag, 0 );
987 Debug( LDAP_DEBUG_ANY, "connection_operation: "
988 "conn %lu unknown LDAP request 0x%lx\n",
989 conn->c_connid, tag, 0 );
991 op->o_tag = LBER_ERROR;
992 rs.sr_err = LDAP_PROTOCOL_ERROR;
993 rs.sr_text = "unknown LDAP request";
994 send_ldap_disconnect( op, &rs );
995 rc = SLAPD_DISCONNECT;
996 goto operations_error;
999 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
1001 LDAP_LOG( CONNECTION, ERR,
1002 "connection_operation: conn %lu SASL bind in progress (tag=%ld).\n",
1003 conn->c_connid, (long)tag, 0 );
1005 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1006 "error: SASL bind in progress (tag=%ld).\n",
1009 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1010 "SASL bind in progress" );
1011 rc = LDAP_OPERATIONS_ERROR;
1012 goto operations_error;
1015 /* We can use Thread-Local storage for most mallocs. We can
1016 * also use TL for ber parsing, but not on Add or Modify.
1019 memsiz = ber_len( op->o_ber ) * 64;
1020 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
1022 memsiz = SLAP_SLAB_SIZE;
1024 memctx = slap_sl_mem_create( memsiz, ctx );
1025 op->o_tmpmemctx = memctx;
1026 op->o_tmpmfuncs = &slap_sl_mfuncs;
1027 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1028 /* Note - the ber and its buffer are already allocated from
1029 * regular memory; this only affects subsequent mallocs that
1030 * ber_scanf may invoke.
1032 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1037 INCR_OP(num_ops_initiated_, SLAP_OP_BIND);
1038 rc = do_bind( op, &rs );
1041 case LDAP_REQ_UNBIND:
1042 INCR_OP(num_ops_initiated_, SLAP_OP_UNBIND);
1043 rc = do_unbind( op, &rs );
1047 INCR_OP(num_ops_initiated_, SLAP_OP_ADD);
1048 rc = do_add( op, &rs );
1051 case LDAP_REQ_DELETE:
1052 INCR_OP(num_ops_initiated_, SLAP_OP_DELETE);
1053 rc = do_delete( op, &rs );
1056 case LDAP_REQ_MODRDN:
1057 INCR_OP(num_ops_initiated_, SLAP_OP_MODRDN);
1058 rc = do_modrdn( op, &rs );
1061 case LDAP_REQ_MODIFY:
1062 INCR_OP(num_ops_initiated_, SLAP_OP_MODIFY);
1063 rc = do_modify( op, &rs );
1066 case LDAP_REQ_COMPARE:
1067 INCR_OP(num_ops_initiated_, SLAP_OP_COMPARE);
1068 rc = do_compare( op, &rs );
1071 case LDAP_REQ_SEARCH:
1072 INCR_OP(num_ops_initiated_, SLAP_OP_SEARCH);
1073 rc = do_search( op, &rs );
1076 case LDAP_REQ_ABANDON:
1077 INCR_OP(num_ops_initiated_, SLAP_OP_ABANDON);
1078 rc = do_abandon( op, &rs );
1081 case LDAP_REQ_EXTENDED:
1082 INCR_OP(num_ops_initiated_, SLAP_OP_EXTENDED);
1083 rc = do_extended( op, &rs );
1092 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
1094 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
1096 num_ops_completed++;
1097 #ifdef SLAPD_MONITOR
1100 num_ops_completed_[SLAP_OP_BIND]++;
1102 case LDAP_REQ_UNBIND:
1103 num_ops_completed_[SLAP_OP_UNBIND]++;
1106 num_ops_completed_[SLAP_OP_ADD]++;
1108 case LDAP_REQ_DELETE:
1109 num_ops_completed_[SLAP_OP_DELETE]++;
1111 case LDAP_REQ_MODRDN:
1112 num_ops_completed_[SLAP_OP_MODRDN]++;
1114 case LDAP_REQ_MODIFY:
1115 num_ops_completed_[SLAP_OP_MODIFY]++;
1117 case LDAP_REQ_COMPARE:
1118 num_ops_completed_[SLAP_OP_COMPARE]++;
1120 case LDAP_REQ_SEARCH:
1121 num_ops_completed_[SLAP_OP_SEARCH]++;
1123 case LDAP_REQ_ABANDON:
1124 num_ops_completed_[SLAP_OP_ABANDON]++;
1126 case LDAP_REQ_EXTENDED:
1127 num_ops_completed_[SLAP_OP_EXTENDED]++;
1133 #endif /* SLAPD_MONITOR */
1134 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
1136 if ( op->o_cancel == SLAP_CANCEL_REQ ) {
1137 op->o_cancel = LDAP_TOO_LATE;
1139 while ( op->o_cancel != SLAP_CANCEL_NONE &&
1140 op->o_cancel != SLAP_CANCEL_DONE )
1142 ldap_pvt_thread_yield();
1145 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1147 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1149 if ( op->o_cancel != SLAP_CANCEL_ACK &&
1150 ( op->o_sync_mode & SLAP_SYNC_PERSIST ) )
1152 slap_sl_mem_detach( ctx, memctx );
1154 } else if ( op->o_sync_slog_size != -1 ) {
1155 slap_sl_mem_detach( ctx, memctx );
1156 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1157 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1158 conn->c_n_ops_executing--;
1159 conn->c_n_ops_completed++;
1162 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1163 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1165 conn->c_n_ops_executing--;
1166 conn->c_n_ops_completed++;
1171 case LDAP_REQ_UNBIND:
1172 /* c_mutex is locked */
1173 connection_closing( conn );
1177 conn->c_sasl_bind_in_progress =
1178 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
1180 if( conn->c_conn_state == SLAP_C_BINDING) {
1181 conn->c_conn_state = SLAP_C_ACTIVE;
1185 connection_resched( conn );
1186 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1190 static const Listener dummy_list = { {0, ""}, {0, ""} };
1192 int connection_client_setup(
1194 ldap_pvt_thread_start_t *func,
1200 rc = connection_init( s, (Listener *)&dummy_list, "", "",
1201 CONN_IS_CLIENT, 0, NULL );
1202 if ( rc < 0 ) return -1;
1204 c = connection_get( s );
1205 c->c_clientfunc = func;
1206 c->c_clientarg = arg;
1207 connection_return( c );
1208 slapd_add_internal( s, 0 );
1209 slapd_set_read( s, 1 );
1213 void connection_client_enable(
1216 slapd_set_read( s, 1 );
1219 void connection_client_stop(
1224 /* get (locked) connection */
1225 c = connection_get( s );
1227 assert( c->c_conn_state == SLAP_C_CLIENT );
1229 c->c_listener = NULL;
1230 c->c_conn_state = SLAP_C_INVALID;
1231 c->c_struct_state = SLAP_C_UNUSED;
1232 connection_return( c );
1233 slapd_remove( s, 0, 1 );
1236 int connection_read(ber_socket_t s)
1241 assert( connections != NULL );
1243 ldap_pvt_thread_mutex_lock( &connections_mutex );
1245 /* get (locked) connection */
1246 c = connection_get( s );
1250 LDAP_LOG( CONNECTION, INFO,
1251 "connection_read: sock %ld no connection\n", (long)s, 0, 0 );
1253 Debug( LDAP_DEBUG_ANY,
1254 "connection_read(%ld): no connection!\n",
1257 slapd_remove(s, 1, 0);
1259 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1265 if( c->c_conn_state == SLAP_C_CLOSING ) {
1267 LDAP_LOG( CONNECTION, INFO,
1268 "connection_read: conn %lu connection closing, ignoring input\n",
1269 c->c_connid, 0, 0 );
1271 Debug( LDAP_DEBUG_TRACE,
1272 "connection_read(%d): closing, ignoring input for id=%lu\n",
1273 s, c->c_connid, 0 );
1275 connection_return( c );
1276 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1280 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1281 slapd_clr_read( s, 0 );
1282 ldap_pvt_thread_pool_submit( &connection_pool,
1283 c->c_clientfunc, c->c_clientarg );
1284 connection_return( c );
1285 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1290 LDAP_LOG( CONNECTION, DETAIL1,
1291 "connection_read: conn %lu checking for input.\n",
1292 c->c_connid, 0, 0 );
1294 Debug( LDAP_DEBUG_TRACE,
1295 "connection_read(%d): checking for input on id=%lu\n",
1296 s, c->c_connid, 0 );
1300 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1301 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1303 #if 0 /* required by next #if 0 */
1309 LDAP_LOG( CONNECTION, ERR,
1310 "connection_read: conn %lu TLS accept error, error %d\n",
1311 c->c_connid, rc, 0 );
1313 Debug( LDAP_DEBUG_TRACE,
1314 "connection_read(%d): TLS accept error "
1315 "error=%d id=%lu, closing\n",
1316 s, rc, c->c_connid );
1318 c->c_needs_tls_accept = 0;
1319 /* connections_mutex and c_mutex are locked */
1320 connection_closing( c );
1323 /* Drain input before close, to allow SSL error codes
1324 * to propagate to client. */
1330 rc = select(s+1, &rfd, NULL, NULL, &tv);
1332 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN, NULL);
1336 connection_close( c );
1338 } else if ( rc == 0 ) {
1340 struct berval authid = BER_BVNULL;
1342 c->c_needs_tls_accept = 0;
1344 /* we need to let SASL know */
1345 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1347 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1348 if( c->c_tls_ssf > c->c_ssf ) {
1349 c->c_ssf = c->c_tls_ssf;
1352 rc = dnX509peerNormalize( ssl, &authid );
1353 if ( rc != LDAP_SUCCESS ) {
1355 LDAP_LOG( CONNECTION, INFO, "connection_read: "
1356 "conn %lu unable to get TLS client DN, error %d\n",
1357 c->c_connid, rc, 0 );
1359 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1360 "unable to get TLS client DN, error=%d id=%lu\n",
1361 s, rc, c->c_connid );
1364 slap_sasl_external( c, c->c_tls_ssf, &authid );
1365 if ( authid.bv_val ) free( authid.bv_val );
1368 /* if success and data is ready, fall thru to data input loop */
1370 !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1372 connection_return( c );
1373 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1379 #ifdef HAVE_CYRUS_SASL
1380 if ( c->c_sasl_layers ) {
1381 /* If previous layer is not removed yet, give up for now */
1382 if ( !c->c_sasl_sockctx ) {
1383 connection_return( c );
1384 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1388 c->c_sasl_layers = 0;
1390 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1392 if( rc != LDAP_SUCCESS ) {
1394 LDAP_LOG( CONNECTION, ERR,
1395 "connection_read: conn %lu SASL install error %d, closing\n",
1396 c->c_connid, rc, 0 );
1398 Debug( LDAP_DEBUG_TRACE,
1399 "connection_read(%d): SASL install error "
1400 "error=%d id=%lu, closing\n",
1401 s, rc, c->c_connid );
1403 /* connections_mutex and c_mutex are locked */
1404 connection_closing( c );
1405 connection_close( c );
1406 connection_return( c );
1407 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1413 #define CONNECTION_INPUT_LOOP 1
1414 /* #define DATA_READY_LOOP 1 */
1417 /* How do we do this without getting into a busy loop ? */
1418 rc = connection_input( c );
1420 #ifdef DATA_READY_LOOP
1421 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1422 #elif CONNECTION_INPUT_LOOP
1430 LDAP_LOG( CONNECTION, ERR,
1431 "connection_read: conn %lu input error %d, closing.\n",
1432 c->c_connid, rc, 0 );
1434 Debug( LDAP_DEBUG_TRACE,
1435 "connection_read(%d): input error=%d id=%lu, closing.\n",
1436 s, rc, c->c_connid );
1438 /* connections_mutex and c_mutex are locked */
1439 connection_closing( c );
1440 connection_close( c );
1441 connection_return( c );
1442 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1446 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1447 slapd_set_read( s, 1 );
1450 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1451 slapd_set_write( s, 1 );
1454 connection_return( c );
1455 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1469 #ifdef LDAP_CONNECTIONLESS
1475 if ( conn->c_currentber == NULL &&
1476 ( conn->c_currentber = ber_alloc()) == NULL )
1479 LDAP_LOG( CONNECTION, ERR,
1480 "connection_input: conn %lu ber_alloc failed.\n",
1481 conn->c_connid, 0, 0 );
1483 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1490 #ifdef LDAP_CONNECTIONLESS
1491 if ( conn->c_is_udp ) {
1492 char peername[sizeof("IP=255.255.255.255:65336")];
1493 len = ber_int_sb_read(conn->c_sb, &peeraddr,
1494 sizeof(struct sockaddr));
1495 if (len != sizeof(struct sockaddr))
1497 sprintf( peername, "IP=%s:%d",
1498 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1499 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1500 Statslog( LDAP_DEBUG_STATS,
1501 "conn=%lu UDP request from %s (%s) accepted.\n",
1502 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1505 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1506 if ( tag != LDAP_TAG_MESSAGE ) {
1510 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1513 LDAP_LOG( CONNECTION, ERR,
1514 "connection_input: conn %lu ber_get_next failed, errno %d (%s).\n",
1515 conn->c_connid, err, sock_errstr(err) );
1517 Debug( LDAP_DEBUG_TRACE,
1518 "ber_get_next on fd %d failed errno=%d (%s)\n",
1519 sd, err, sock_errstr(err) );
1521 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1522 /* log, close and send error */
1523 ber_free( conn->c_currentber, 1 );
1524 conn->c_currentber = NULL;
1531 ber = conn->c_currentber;
1532 conn->c_currentber = NULL;
1534 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1535 /* log, close and send error */
1537 LDAP_LOG( CONNECTION, ERR,
1538 "connection_input: conn %lu ber_get_int returns 0x%lx.\n",
1539 conn->c_connid, tag, 0 );
1541 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n",
1548 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1549 /* log, close and send error */
1551 LDAP_LOG( CONNECTION, ERR,
1552 "connection_input: conn %lu ber_peek_tag returns 0x%lx.\n",
1553 conn->c_connid, tag, 0 );
1555 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n",
1563 #ifdef LDAP_CONNECTIONLESS
1564 if( conn->c_is_udp ) {
1565 if( tag == LBER_OCTETSTRING ) {
1566 ber_get_stringa( ber, &cdn );
1567 tag = ber_peek_tag(ber, &len);
1569 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1571 LDAP_LOG( CONNECTION, ERR,
1572 "connection_input: conn %lu invalid req for UDP 0x%lx.\n",
1573 conn->c_connid, tag, 0 );
1575 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1582 if(tag == LDAP_REQ_BIND) {
1583 /* immediately abandon all exiting operations upon BIND */
1584 connection_abandon( conn );
1587 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1590 op->o_assertion = NULL;
1591 op->o_preread_attrs = NULL;
1592 op->o_postread_attrs = NULL;
1593 op->o_vrFilter = NULL;
1594 /* clear state if the connection is being reused from inactive */
1595 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1596 memset( &conn->c_pagedresults_state, 0, sizeof( conn->c_pagedresults_state ) );
1598 op->o_pagedresults_state = conn->c_pagedresults_state;
1600 op->o_res_ber = NULL;
1602 #ifdef LDAP_CONNECTIONLESS
1603 if (conn->c_is_udp) {
1605 ber_str2bv( cdn, 0, 1, &op->o_dn );
1606 op->o_protocol = LDAP_VERSION2;
1608 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1609 if (op->o_res_ber == NULL) return 1;
1611 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1612 sizeof(struct sockaddr), 0 );
1614 if (rc != sizeof(struct sockaddr)) {
1616 LDAP_LOG( CONNECTION, INFO,
1617 "connection_input: conn %lu ber_write failed\n",
1618 conn->c_connid, 0, 0 );
1620 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1625 if (op->o_protocol == LDAP_VERSION2) {
1626 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1629 LDAP_LOG( CONNECTION, INFO,
1630 "connection_input: conn %lu put outer sequence failed\n",
1631 conn->c_connid, 0, 0 );
1633 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1639 #endif /* LDAP_CONNECTIONLESS */
1643 /* Don't process requests when the conn is in the middle of a
1644 * Bind, or if it's closing. Also, don't let any single conn
1645 * use up all the available threads, and don't execute if we're
1646 * currently blocked on output. And don't execute if there are
1647 * already pending ops, let them go first. Abandon operations
1648 * get exceptions to some, but not all, cases.
1650 if (tag != LDAP_REQ_ABANDON && conn->c_conn_state == SLAP_C_CLOSING) {
1652 } else if (tag != LDAP_REQ_ABANDON && conn->c_writewaiter) {
1653 defer = "awaiting write";
1654 } else if (conn->c_n_ops_executing >= connection_pool_max/2) {
1655 defer = "too many executing";
1656 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1658 } else if (tag != LDAP_REQ_ABANDON && conn->c_n_ops_pending) {
1659 defer = "pending operations";
1663 int max = conn->c_dn.bv_len
1664 ? slap_conn_max_pending_auth
1665 : slap_conn_max_pending;
1668 LDAP_LOG( CONNECTION, INFO,
1669 "connection_input: conn %lu deferring operation: %s\n",
1670 conn->c_connid, defer, 0 );
1672 Debug( LDAP_DEBUG_ANY,
1673 "connection_input: conn=%lu deferring operation: %s\n",
1674 conn->c_connid, defer, 0 );
1676 conn->c_n_ops_pending++;
1677 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1678 if ( conn->c_n_ops_pending > max ) {
1684 conn->c_n_ops_executing++;
1685 connection_op_activate( op );
1689 if ( conn->c_struct_state != SLAP_C_USED ) {
1690 /* connection must have got closed underneath us */
1694 assert( conn->c_struct_state == SLAP_C_USED );
1700 connection_resched( Connection *conn )
1704 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1707 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1709 /* us trylock to avoid possible deadlock */
1710 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1714 LDAP_LOG( CONNECTION, DETAIL1,
1715 "connection_resched: conn %lu reaquiring locks.\n",
1716 conn->c_connid, 0, 0 );
1718 Debug( LDAP_DEBUG_TRACE,
1719 "connection_resched: reaquiring locks conn=%lu sd=%d\n",
1720 conn->c_connid, sd, 0 );
1723 * reaquire locks in the right order...
1724 * this may allow another thread to close this connection,
1725 * so recheck state below.
1727 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1728 ldap_pvt_thread_mutex_lock( &connections_mutex );
1729 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1732 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1734 LDAP_LOG( CONNECTION, INFO,
1735 "connection_resched: conn %lu closed by other thread.\n",
1736 conn->c_connid, 0, 0 );
1738 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1739 "closed by other thread conn=%lu sd=%d\n",
1740 conn->c_connid, sd, 0 );
1744 LDAP_LOG( CONNECTION, DETAIL1,
1745 "connection_resched: conn %lu attempting closing.\n",
1746 conn->c_connid, 0, 0 );
1748 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1749 "attempting closing conn=%lu sd=%d\n",
1750 conn->c_connid, sd, 0 );
1752 connection_close( conn );
1755 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1759 if( conn->c_conn_state != SLAP_C_ACTIVE || conn->c_writewaiter ) {
1760 /* other states need different handling */
1764 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1765 if ( conn->c_n_ops_executing > connection_pool_max/2 ) {
1768 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1769 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1770 /* pending operations should not be marked for abandonment */
1771 assert(!op->o_abandon);
1773 conn->c_n_ops_pending--;
1774 conn->c_n_ops_executing++;
1776 connection_op_activate( op );
1778 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1785 static int connection_op_activate( Operation *op )
1788 ber_tag_t tag = op->o_tag;
1790 if(tag == LDAP_REQ_BIND) {
1791 op->o_conn->c_conn_state = SLAP_C_BINDING;
1794 if (!op->o_dn.bv_len) {
1795 op->o_authz = op->o_conn->c_authz;
1796 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1797 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1799 op->o_authtype = op->o_conn->c_authtype;
1800 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1802 if (!op->o_protocol) {
1803 op->o_protocol = op->o_conn->c_protocol
1804 ? op->o_conn->c_protocol : LDAP_VERSION3;
1806 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE
1807 && op->o_protocol > LDAP_VERSION2)
1809 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1812 op->o_connid = op->o_conn->c_connid;
1814 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1816 status = ldap_pvt_thread_pool_submit( &connection_pool,
1817 connection_operation, (void *) op );
1819 if ( status != 0 ) {
1821 LDAP_LOG( CONNECTION, ERR,
1822 "connection_op_activate: conn %lu thread pool submit failed.\n",
1823 op->o_connid, 0, 0 );
1825 Debug( LDAP_DEBUG_ANY,
1826 "ldap_pvt_thread_pool_submit: failed (%d) for conn=%lu\n",
1827 status, op->o_connid, 0 );
1829 /* should move op to pending list */
1835 int connection_write(ber_socket_t s)
1839 assert( connections != NULL );
1841 ldap_pvt_thread_mutex_lock( &connections_mutex );
1843 c = connection_get( s );
1845 slapd_clr_write( s, 0);
1849 LDAP_LOG( CONNECTION, ERR,
1850 "connection_write: sock %ld no connection!\n", (long)s, 0, 0);
1852 Debug( LDAP_DEBUG_ANY,
1853 "connection_write(%ld): no connection!\n",
1856 slapd_remove(s, 1, 0);
1857 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1864 LDAP_LOG( CONNECTION, DETAIL1,
1865 "connection_write conn %lu waking output.\n", c->c_connid, 0, 0 );
1867 Debug( LDAP_DEBUG_TRACE,
1868 "connection_write(%d): waking output for id=%lu\n",
1869 s, c->c_connid, 0 );
1871 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1873 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1874 slapd_set_read( s, 1 );
1876 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1877 slapd_set_write( s, 1 );
1879 connection_return( c );
1880 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1885 connection_fake_init(
1890 conn->c_connid = -1;
1891 conn->c_send_ldap_result = slap_send_ldap_result;
1892 conn->c_send_search_entry = slap_send_search_entry;
1893 conn->c_send_search_reference = slap_send_search_reference;
1894 conn->c_listener = (Listener *)&dummy_list;
1895 conn->c_peer_name = slap_empty_bv;
1897 /* set memory context */
1898 op->o_tmpmemctx = slap_sl_mem_create( SLAP_SLAB_SIZE, ctx );
1899 op->o_tmpmfuncs = &slap_sl_mfuncs;
1900 op->o_threadctx = ctx;
1903 op->o_connid = op->o_conn->c_connid;
1905 op->o_time = slap_get_time();