2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2014 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
11 * A copy of this license is available in the file LICENSE in the
12 * top-level directory of the distribution or, alternatively, at
13 * <http://www.OpenLDAP.org/license.html>.
15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
16 * All rights reserved.
18 * Redistribution and use in source and binary forms are permitted
19 * provided that this notice is preserved and that due credit is given
20 * to the University of Michigan at Ann Arbor. The name of the University
21 * may not be used to endorse or promote products derived from this
22 * software without specific prior written permission. This software
23 * is provided ``as is'' without express or implied warranty.
33 #include <ac/socket.h>
35 #include <ac/string.h>
37 #include <ac/unistd.h>
42 #ifdef LDAP_CONNECTIONLESS
43 #include "../../libraries/liblber/lber-int.h" /* ber_int_sb_read() */
47 #include "slapi/slapi.h"
50 /* protected by connections_mutex */
51 static ldap_pvt_thread_mutex_t connections_mutex;
52 static Connection *connections = NULL;
54 static ldap_pvt_thread_mutex_t conn_nextid_mutex;
55 static unsigned long conn_nextid = SLAPD_SYNC_SYNCCONN_OFFSET;
57 static const char conn_lost_str[] = "connection lost";
60 connection_state2str( int state )
63 case SLAP_C_INVALID: return "!";
64 case SLAP_C_INACTIVE: return "|";
65 case SLAP_C_CLOSING: return "C";
66 case SLAP_C_ACTIVE: return "";
67 case SLAP_C_BINDING: return "B";
68 case SLAP_C_CLIENT: return "L";
74 static Connection* connection_get( ber_socket_t s );
76 typedef struct conn_readinfo {
78 ldap_pvt_thread_start_t *func;
84 static int connection_input( Connection *c, conn_readinfo *cri );
85 static void connection_close( Connection *c );
87 static int connection_op_activate( Operation *op );
88 static void connection_op_queue( Operation *op );
89 static int connection_resched( Connection *conn );
90 static void connection_abandon( Connection *conn );
91 static void connection_destroy( Connection *c );
93 static ldap_pvt_thread_start_t connection_operation;
96 * Initialize connection management infrastructure.
98 int connections_init(void)
102 assert( connections == NULL );
104 if( connections != NULL) {
105 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
110 /* should check return of every call */
111 ldap_pvt_thread_mutex_init( &connections_mutex );
112 ldap_pvt_thread_mutex_init( &conn_nextid_mutex );
114 connections = (Connection *) ch_calloc( dtblsize, sizeof(Connection) );
116 if( connections == NULL ) {
117 Debug( LDAP_DEBUG_ANY, "connections_init: "
118 "allocation (%d*%ld) of connection array failed\n",
119 dtblsize, (long) sizeof(Connection), 0 );
123 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
124 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
126 for (i=0; i<dtblsize; i++) connections[i].c_conn_idx = i;
129 * per entry initialization of the Connection array initialization
130 * will be done by connection_init()
137 * Destroy connection management infrastructure.
140 int connections_destroy(void)
144 /* should check return of every call */
146 if( connections == NULL) {
147 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
152 for ( i = 0; i < dtblsize; i++ ) {
153 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
154 ber_sockbuf_free( connections[i].c_sb );
155 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
156 ldap_pvt_thread_mutex_destroy( &connections[i].c_write1_mutex );
157 ldap_pvt_thread_cond_destroy( &connections[i].c_write1_cv );
159 if ( slapi_plugins_used ) {
160 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION,
170 ldap_pvt_thread_mutex_destroy( &connections_mutex );
171 ldap_pvt_thread_mutex_destroy( &conn_nextid_mutex );
176 * shutdown all connections
178 int connections_shutdown(void)
182 for ( i = 0; i < dtblsize; i++ ) {
183 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
184 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
185 if( connections[i].c_struct_state == SLAP_C_USED ) {
187 /* give persistent clients a chance to cleanup */
188 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
189 ldap_pvt_thread_pool_submit( &connection_pool,
190 connections[i].c_clientfunc, connections[i].c_clientarg );
192 /* c_mutex is locked */
193 connection_closing( &connections[i], "slapd shutdown" );
194 connection_close( &connections[i] );
197 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
205 * Timeout idle connections.
207 int connections_timeout_idle(time_t now)
209 int i = 0, writers = 0;
210 ber_socket_t connindex;
213 for( c = connection_first( &connindex );
215 c = connection_next( c, &connindex ) )
217 /* Don't timeout a slow-running request or a persistent
218 * outbound connection.
220 if(( c->c_n_ops_executing && !c->c_writewaiter)
221 || c->c_conn_state == SLAP_C_CLIENT ) {
225 if( global_idletimeout &&
226 difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
228 connection_closing( c, "idletimeout" );
229 connection_close( c );
234 connection_done( c );
239 /* Drop all client connections */
240 void connections_drop()
243 ber_socket_t connindex;
245 for( c = connection_first( &connindex );
247 c = connection_next( c, &connindex ) )
249 /* Don't close a slow-running request or a persistent
250 * outbound connection.
252 if(( c->c_n_ops_executing && !c->c_writewaiter)
253 || c->c_conn_state == SLAP_C_CLIENT ) {
256 connection_closing( c, "dropping" );
257 connection_close( c );
259 connection_done( c );
262 static Connection* connection_get( ber_socket_t s )
266 Debug( LDAP_DEBUG_ARGS,
267 "connection_get(%ld)\n",
270 assert( connections != NULL );
272 if(s == AC_SOCKET_INVALID) return NULL;
274 assert( s < dtblsize );
278 ldap_pvt_thread_mutex_lock( &c->c_mutex );
280 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
282 if( c->c_struct_state != SLAP_C_USED ) {
283 /* connection must have been closed due to resched */
285 Debug( LDAP_DEBUG_CONNS,
286 "connection_get(%d): connection not used\n",
288 assert( c->c_conn_state == SLAP_C_INVALID );
289 assert( c->c_sd == AC_SOCKET_INVALID );
291 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
295 Debug( LDAP_DEBUG_TRACE,
296 "connection_get(%d): got connid=%lu\n",
301 assert( c->c_struct_state == SLAP_C_USED );
302 assert( c->c_conn_state != SLAP_C_INVALID );
303 assert( c->c_sd != AC_SOCKET_INVALID );
305 #ifndef SLAPD_MONITOR
306 if ( global_idletimeout > 0 )
307 #endif /* ! SLAPD_MONITOR */
309 c->c_activitytime = slap_get_time();
316 static void connection_return( Connection *c )
318 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
321 Connection * connection_init(
325 const char* peername,
328 struct berval *authid
329 LDAP_PF_LOCAL_SENDMSG_ARG(struct berval *peerbv))
334 ber_socket_t sfd = SLAP_FD2SOCK(s);
336 assert( connections != NULL );
338 assert( listener != NULL );
339 assert( dnsname != NULL );
340 assert( peername != NULL );
343 assert( !( flags & CONN_IS_TLS ));
346 if( s == AC_SOCKET_INVALID ) {
347 Debug( LDAP_DEBUG_ANY,
348 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
353 assert( s < dtblsize );
355 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
358 assert( c->c_struct_state == SLAP_C_UNUSED );
362 c->c_send_ldap_result = slap_send_ldap_result;
363 c->c_send_search_entry = slap_send_search_entry;
364 c->c_send_search_reference = slap_send_search_reference;
365 c->c_send_ldap_extended = slap_send_ldap_extended;
366 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
368 BER_BVZERO( &c->c_authmech );
369 BER_BVZERO( &c->c_dn );
370 BER_BVZERO( &c->c_ndn );
372 c->c_listener = NULL;
373 BER_BVZERO( &c->c_peer_domain );
374 BER_BVZERO( &c->c_peer_name );
376 LDAP_STAILQ_INIT(&c->c_ops);
377 LDAP_STAILQ_INIT(&c->c_pending_ops);
380 c->c_txn = CONN_TXN_INACTIVE;
381 c->c_txn_backend = NULL;
382 LDAP_STAILQ_INIT(&c->c_txn_ops);
385 BER_BVZERO( &c->c_sasl_bind_mech );
387 c->c_sasl_authctx = NULL;
388 c->c_sasl_sockctx = NULL;
389 c->c_sasl_extra = NULL;
390 c->c_sasl_bindop = NULL;
391 c->c_sasl_cbind = NULL;
393 c->c_sb = ber_sockbuf_alloc( );
396 ber_len_t max = sockbuf_max_incoming;
397 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
400 c->c_currentber = NULL;
402 /* should check status of thread calls */
403 ldap_pvt_thread_mutex_init( &c->c_mutex );
404 ldap_pvt_thread_mutex_init( &c->c_write1_mutex );
405 ldap_pvt_thread_cond_init( &c->c_write1_cv );
408 if ( slapi_plugins_used ) {
409 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
414 ldap_pvt_thread_mutex_lock( &c->c_mutex );
416 assert( BER_BVISNULL( &c->c_authmech ) );
417 assert( BER_BVISNULL( &c->c_dn ) );
418 assert( BER_BVISNULL( &c->c_ndn ) );
419 assert( c->c_listener == NULL );
420 assert( BER_BVISNULL( &c->c_peer_domain ) );
421 assert( BER_BVISNULL( &c->c_peer_name ) );
422 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
423 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
425 assert( c->c_txn == CONN_TXN_INACTIVE );
426 assert( c->c_txn_backend == NULL );
427 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
429 assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
430 assert( c->c_sasl_done == 0 );
431 assert( c->c_sasl_authctx == NULL );
432 assert( c->c_sasl_sockctx == NULL );
433 assert( c->c_sasl_extra == NULL );
434 assert( c->c_sasl_bindop == NULL );
435 assert( c->c_sasl_cbind == NULL );
436 assert( c->c_currentber == NULL );
437 assert( c->c_writewaiter == 0);
438 assert( c->c_writers == 0);
440 c->c_listener = listener;
443 if ( flags & CONN_IS_CLIENT ) {
445 ldap_pvt_thread_mutex_lock( &connections_mutex );
446 c->c_conn_state = SLAP_C_CLIENT;
447 c->c_struct_state = SLAP_C_USED;
448 ldap_pvt_thread_mutex_unlock( &connections_mutex );
449 c->c_close_reason = "?"; /* should never be needed */
450 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &sfd );
451 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
456 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
457 ber_str2bv( peername, 0, 1, &c->c_peer_name );
459 c->c_n_ops_received = 0;
460 c->c_n_ops_executing = 0;
461 c->c_n_ops_pending = 0;
462 c->c_n_ops_completed = 0;
468 /* set to zero until bind, implies LDAP_VERSION3 */
471 #ifndef SLAPD_MONITOR
472 if ( global_idletimeout > 0 )
473 #endif /* ! SLAPD_MONITOR */
475 c->c_activitytime = c->c_starttime = slap_get_time();
478 #ifdef LDAP_CONNECTIONLESS
480 if( flags & CONN_IS_UDP ) {
483 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
484 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
486 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
487 LBER_SBIOD_LEVEL_PROVIDER, (void *)&sfd );
488 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
489 LBER_SBIOD_LEVEL_PROVIDER, NULL );
491 #endif /* LDAP_CONNECTIONLESS */
493 if ( flags & CONN_IS_IPC ) {
495 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
496 LBER_SBIOD_LEVEL_PROVIDER, (void*)"ipc_" );
498 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_fd,
499 LBER_SBIOD_LEVEL_PROVIDER, (void *)&sfd );
500 #ifdef LDAP_PF_LOCAL_SENDMSG
501 if ( !BER_BVISEMPTY( peerbv ))
502 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_UNGET_BUF, peerbv );
505 #endif /* LDAP_PF_LOCAL */
508 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
509 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
511 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
512 LBER_SBIOD_LEVEL_PROVIDER, (void *)&sfd );
516 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
517 INT_MAX, (void*)"ldap_" );
520 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
521 c /* non-NULL */ ) < 0 )
523 Debug( LDAP_DEBUG_ANY,
524 "connection_init(%d, %s): set nonblocking failed\n",
525 s, c->c_peer_name.bv_val, 0 );
528 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
529 id = c->c_connid = conn_nextid++;
530 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
532 ldap_pvt_thread_mutex_lock( &connections_mutex );
533 c->c_conn_state = SLAP_C_INACTIVE;
534 c->c_struct_state = SLAP_C_USED;
535 ldap_pvt_thread_mutex_unlock( &connections_mutex );
536 c->c_close_reason = "?"; /* should never be needed */
538 c->c_ssf = c->c_transport_ssf = ssf;
542 if ( flags & CONN_IS_TLS ) {
544 c->c_needs_tls_accept = 1;
547 c->c_needs_tls_accept = 0;
551 slap_sasl_open( c, 0 );
552 slap_sasl_external( c, ssf, authid );
554 slapd_add_internal( s, 1 );
556 backend_connection_init(c);
557 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
559 if ( !(flags & CONN_IS_UDP ))
560 Statslog( LDAP_DEBUG_STATS,
561 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
562 id, (long) s, peername, listener->sl_name.bv_val, 0 );
567 void connection2anonymous( Connection *c )
569 assert( connections != NULL );
573 ber_len_t max = sockbuf_max_incoming;
574 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
577 if ( !BER_BVISNULL( &c->c_authmech ) ) {
578 ch_free(c->c_authmech.bv_val);
580 BER_BVZERO( &c->c_authmech );
582 if ( !BER_BVISNULL( &c->c_dn ) ) {
583 ch_free(c->c_dn.bv_val);
585 BER_BVZERO( &c->c_dn );
587 if ( !BER_BVISNULL( &c->c_ndn ) ) {
588 ch_free(c->c_ndn.bv_val);
590 BER_BVZERO( &c->c_ndn );
592 if ( !BER_BVISNULL( &c->c_sasl_authz_dn ) ) {
593 ber_memfree_x( c->c_sasl_authz_dn.bv_val, NULL );
595 BER_BVZERO( &c->c_sasl_authz_dn );
597 c->c_authz_backend = NULL;
601 connection_destroy( Connection *c )
603 unsigned long connid;
604 const char *close_reason;
608 assert( connections != NULL );
610 assert( c->c_struct_state != SLAP_C_UNUSED );
611 assert( c->c_conn_state != SLAP_C_INVALID );
612 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
613 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
615 assert( c->c_txn == CONN_TXN_INACTIVE );
616 assert( c->c_txn_backend == NULL );
617 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
619 assert( c->c_writewaiter == 0);
620 assert( c->c_writers == 0);
622 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
623 connid = c->c_connid;
624 close_reason = c->c_close_reason;
626 ldap_pvt_thread_mutex_lock( &connections_mutex );
627 c->c_struct_state = SLAP_C_PENDING;
628 ldap_pvt_thread_mutex_unlock( &connections_mutex );
630 backend_connection_destroy(c);
635 c->c_activitytime = c->c_starttime = 0;
637 connection2anonymous( c );
638 c->c_listener = NULL;
640 if(c->c_peer_domain.bv_val != NULL) {
641 free(c->c_peer_domain.bv_val);
643 BER_BVZERO( &c->c_peer_domain );
644 if(c->c_peer_name.bv_val != NULL) {
645 free(c->c_peer_name.bv_val);
647 BER_BVZERO( &c->c_peer_name );
649 c->c_sasl_bind_in_progress = 0;
650 if(c->c_sasl_bind_mech.bv_val != NULL) {
651 free(c->c_sasl_bind_mech.bv_val);
653 BER_BVZERO( &c->c_sasl_bind_mech );
655 slap_sasl_close( c );
657 if ( c->c_currentber != NULL ) {
658 ber_free( c->c_currentber, 1 );
659 c->c_currentber = NULL;
664 /* call destructors, then constructors; avoids unnecessary allocation */
665 if ( slapi_plugins_used ) {
666 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
671 c->c_sd = AC_SOCKET_INVALID;
672 c->c_conn_state = SLAP_C_INVALID;
673 c->c_struct_state = SLAP_C_UNUSED;
674 c->c_close_reason = "?"; /* should never be needed */
677 c->c_sb = ber_sockbuf_alloc( );
679 ber_len_t max = sockbuf_max_incoming;
680 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
683 /* c must be fully reset by this point; when we call slapd_remove
684 * it may get immediately reused by a new connection.
686 if ( sd != AC_SOCKET_INVALID ) {
687 slapd_remove( sd, sb, 1, 0, 0 );
689 if ( close_reason == NULL ) {
690 Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed\n",
691 connid, (long) sd, 0, 0, 0 );
693 Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed (%s)\n",
694 connid, (long) sd, close_reason, 0, 0 );
699 int connection_valid( Connection *c )
701 /* c_mutex must be locked by caller */
705 return c->c_struct_state == SLAP_C_USED &&
706 c->c_conn_state >= SLAP_C_ACTIVE &&
707 c->c_conn_state <= SLAP_C_CLIENT;
710 static void connection_abandon( Connection *c )
712 /* c_mutex must be locked by caller */
714 Operation *o, *next, op = {0};
719 op.o_connid = c->c_connid;
720 op.o_tag = LDAP_REQ_ABANDON;
722 for ( o = LDAP_STAILQ_FIRST( &c->c_ops ); o; o=next ) {
723 SlapReply rs = {REP_RESULT};
725 next = LDAP_STAILQ_NEXT( o, o_next );
726 op.orn_msgid = o->o_msgid;
728 op.o_bd = frontendDB;
729 frontendDB->be_abandon( &op, &rs );
733 /* remove operations in pending transaction */
734 while ( (o = LDAP_STAILQ_FIRST( &c->c_txn_ops )) != NULL) {
735 LDAP_STAILQ_REMOVE_HEAD( &c->c_txn_ops, o_next );
736 LDAP_STAILQ_NEXT(o, o_next) = NULL;
737 slap_op_free( o, NULL );
740 /* clear transaction */
741 c->c_txn_backend = NULL;
742 c->c_txn = CONN_TXN_INACTIVE;
745 /* remove pending operations */
746 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
747 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
748 LDAP_STAILQ_NEXT(o, o_next) = NULL;
749 slap_op_free( o, NULL );
754 connection_wake_writers( Connection *c )
756 /* wake write blocked operations */
757 ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
758 if ( c->c_writers > 0 ) {
759 c->c_writers = -c->c_writers;
760 ldap_pvt_thread_cond_broadcast( &c->c_write1_cv );
761 ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
762 if ( c->c_writewaiter ) {
763 slapd_shutsock( c->c_sd );
765 ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
766 while ( c->c_writers ) {
767 ldap_pvt_thread_cond_wait( &c->c_write1_cv, &c->c_write1_mutex );
769 ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
771 ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
772 slapd_clr_write( c->c_sd, 1 );
776 void connection_closing( Connection *c, const char *why )
778 assert( connections != NULL );
781 if ( c->c_struct_state != SLAP_C_USED ) return;
783 assert( c->c_conn_state != SLAP_C_INVALID );
785 /* c_mutex must be locked by caller */
787 if( c->c_conn_state != SLAP_C_CLOSING ) {
788 Debug( LDAP_DEBUG_CONNS,
789 "connection_closing: readying conn=%lu sd=%d for close\n",
790 c->c_connid, c->c_sd, 0 );
791 /* update state to closing */
792 c->c_conn_state = SLAP_C_CLOSING;
793 c->c_close_reason = why;
795 /* don't listen on this port anymore */
796 slapd_clr_read( c->c_sd, 0 );
798 /* abandon active operations */
799 connection_abandon( c );
801 /* wake write blocked operations */
802 connection_wake_writers( c );
804 } else if( why == NULL && c->c_close_reason == conn_lost_str ) {
805 /* Client closed connection after doing Unbind. */
806 c->c_close_reason = NULL;
811 connection_close( Connection *c )
813 assert( connections != NULL );
816 if ( c->c_struct_state != SLAP_C_USED ) return;
818 assert( c->c_conn_state == SLAP_C_CLOSING );
820 /* NOTE: c_mutex should be locked by caller */
822 if ( !LDAP_STAILQ_EMPTY(&c->c_ops) ||
823 !LDAP_STAILQ_EMPTY(&c->c_pending_ops) )
825 Debug( LDAP_DEBUG_CONNS,
826 "connection_close: deferring conn=%lu sd=%d\n",
827 c->c_connid, c->c_sd, 0 );
831 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
832 c->c_connid, c->c_sd, 0 );
834 connection_destroy( c );
837 unsigned long connections_nextid(void)
840 assert( connections != NULL );
842 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
846 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
852 * Loop through the connections:
854 * for (c = connection_first(&i); c; c = connection_next(c, &i)) ...;
855 * connection_done(c);
857 * 'i' is the cursor, initialized by connection_first().
858 * 'c_mutex' is locked in the returned connection. The functions must
859 * be passed the previous return value so they can unlock it again.
862 Connection* connection_first( ber_socket_t *index )
864 assert( connections != NULL );
865 assert( index != NULL );
867 ldap_pvt_thread_mutex_lock( &connections_mutex );
868 for( *index = 0; *index < dtblsize; (*index)++) {
869 if( connections[*index].c_struct_state != SLAP_C_UNINITIALIZED ) {
873 ldap_pvt_thread_mutex_unlock( &connections_mutex );
875 return connection_next(NULL, index);
878 /* Next connection in loop, see connection_first() */
879 Connection* connection_next( Connection *c, ber_socket_t *index )
881 assert( connections != NULL );
882 assert( index != NULL );
883 assert( *index <= dtblsize );
885 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
889 ldap_pvt_thread_mutex_lock( &connections_mutex );
890 for(; *index < dtblsize; (*index)++) {
892 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
893 /* FIXME: accessing c_conn_state without locking c_mutex */
894 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
898 if( connections[*index].c_struct_state == SLAP_C_USED ) {
899 c = &connections[(*index)++];
900 if ( ldap_pvt_thread_mutex_trylock( &c->c_mutex )) {
902 ldap_pvt_thread_mutex_unlock( &connections_mutex );
903 ldap_pvt_thread_mutex_lock( &c->c_mutex );
904 ldap_pvt_thread_mutex_lock( &connections_mutex );
905 if ( c->c_struct_state != SLAP_C_USED ) {
906 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
911 assert( c->c_conn_state != SLAP_C_INVALID );
915 c_struct = connections[*index].c_struct_state;
916 if ( c_struct == SLAP_C_PENDING )
918 assert( c_struct == SLAP_C_UNUSED );
919 /* FIXME: accessing c_conn_state without locking c_mutex */
920 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
923 ldap_pvt_thread_mutex_unlock( &connections_mutex );
927 /* End connection loop, see connection_first() */
928 void connection_done( Connection *c )
930 assert( connections != NULL );
932 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
936 * connection_activity - handle the request operation op on connection
937 * conn. This routine figures out what kind of operation it is and
938 * calls the appropriate stub to handle it.
942 /* FIXME: returns 0 in case of failure */
943 #define INCR_OP_INITIATED(index) \
945 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); \
946 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_initiated_[(index)], 1); \
947 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); \
949 #define INCR_OP_COMPLETED(index) \
951 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); \
952 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_completed, 1); \
953 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_completed_[(index)], 1); \
954 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); \
956 #else /* !SLAPD_MONITOR */
957 #define INCR_OP_INITIATED(index) do { } while (0)
958 #define INCR_OP_COMPLETED(index) \
960 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); \
961 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_completed, 1); \
962 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); \
964 #endif /* !SLAPD_MONITOR */
967 * NOTE: keep in sync with enum in slapd.h
969 static BI_op_func *opfun[] = {
983 /* Counters are per-thread, not per-connection.
986 conn_counter_destroy( void *key, void *data )
988 slap_counters_t **prev, *sc;
990 ldap_pvt_thread_mutex_lock( &slap_counters.sc_mutex );
991 for ( prev = &slap_counters.sc_next, sc = slap_counters.sc_next; sc;
992 prev = &sc->sc_next, sc = sc->sc_next ) {
997 /* Copy data to main counter */
998 ldap_pvt_mp_add( slap_counters.sc_bytes, sc->sc_bytes );
999 ldap_pvt_mp_add( slap_counters.sc_pdu, sc->sc_pdu );
1000 ldap_pvt_mp_add( slap_counters.sc_entries, sc->sc_entries );
1001 ldap_pvt_mp_add( slap_counters.sc_refs, sc->sc_refs );
1002 ldap_pvt_mp_add( slap_counters.sc_ops_initiated, sc->sc_ops_initiated );
1003 ldap_pvt_mp_add( slap_counters.sc_ops_completed, sc->sc_ops_completed );
1004 #ifdef SLAPD_MONITOR
1005 for ( i = 0; i < SLAP_OP_LAST; i++ ) {
1006 ldap_pvt_mp_add( slap_counters.sc_ops_initiated_[ i ], sc->sc_ops_initiated_[ i ] );
1007 ldap_pvt_mp_add( slap_counters.sc_ops_initiated_[ i ], sc->sc_ops_completed_[ i ] );
1009 #endif /* SLAPD_MONITOR */
1010 slap_counters_destroy( sc );
1011 ber_memfree_x( data, NULL );
1015 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_mutex );
1019 conn_counter_init( Operation *op, void *ctx )
1021 slap_counters_t *sc;
1024 if ( ldap_pvt_thread_pool_getkey(
1025 ctx, (void *)conn_counter_init, &vsc, NULL ) || !vsc ) {
1026 vsc = ch_malloc( sizeof( slap_counters_t ));
1028 slap_counters_init( sc );
1029 ldap_pvt_thread_pool_setkey( ctx, (void*)conn_counter_init, vsc,
1030 conn_counter_destroy, NULL, NULL );
1032 ldap_pvt_thread_mutex_lock( &slap_counters.sc_mutex );
1033 sc->sc_next = slap_counters.sc_next;
1034 slap_counters.sc_next = sc;
1035 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_mutex );
1037 op->o_counters = vsc;
1041 connection_operation( void *ctx, void *arg_v )
1043 int rc = LDAP_OTHER, cancel;
1044 Operation *op = arg_v;
1045 SlapReply rs = {REP_RESULT};
1046 ber_tag_t tag = op->o_tag;
1047 slap_op_t opidx = SLAP_OP_LAST;
1048 Connection *conn = op->o_conn;
1049 void *memctx = NULL;
1050 void *memctx_null = NULL;
1053 conn_counter_init( op, ctx );
1054 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1055 /* FIXME: returns 0 in case of failure */
1056 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_initiated, 1);
1057 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1059 op->o_threadctx = ctx;
1060 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
1064 case LDAP_REQ_UNBIND:
1066 case LDAP_REQ_DELETE:
1067 case LDAP_REQ_MODDN:
1068 case LDAP_REQ_MODIFY:
1069 case LDAP_REQ_COMPARE:
1070 case LDAP_REQ_SEARCH:
1071 case LDAP_REQ_ABANDON:
1072 case LDAP_REQ_EXTENDED:
1075 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1076 "conn %lu unknown LDAP request 0x%lx\n",
1077 conn->c_connid, tag, 0 );
1078 op->o_tag = LBER_ERROR;
1079 rs.sr_err = LDAP_PROTOCOL_ERROR;
1080 rs.sr_text = "unknown LDAP request";
1081 send_ldap_disconnect( op, &rs );
1082 rc = SLAPD_DISCONNECT;
1083 goto operations_error;
1086 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
1087 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1088 "error: SASL bind in progress (tag=%ld).\n",
1090 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1091 "SASL bind in progress" );
1092 rc = LDAP_OPERATIONS_ERROR;
1093 goto operations_error;
1097 if (( conn->c_txn == CONN_TXN_SPECIFY ) && (
1098 ( tag == LDAP_REQ_ADD ) ||
1099 ( tag == LDAP_REQ_DELETE ) ||
1100 ( tag == LDAP_REQ_MODIFY ) ||
1101 ( tag == LDAP_REQ_MODRDN )))
1103 /* Disable SLAB allocator for all update operations
1104 issued inside of a transaction */
1105 op->o_tmpmemctx = NULL;
1106 op->o_tmpmfuncs = &ch_mfuncs;
1110 /* We can use Thread-Local storage for most mallocs. We can
1111 * also use TL for ber parsing, but not on Add or Modify.
1114 memsiz = ber_len( op->o_ber ) * 64;
1115 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
1117 memsiz = SLAP_SLAB_SIZE;
1119 memctx = slap_sl_mem_create( memsiz, SLAP_SLAB_STACK, ctx, 1 );
1120 op->o_tmpmemctx = memctx;
1121 op->o_tmpmfuncs = &slap_sl_mfuncs;
1122 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1123 /* Note - the ber and its buffer are already allocated from
1124 * regular memory; this only affects subsequent mallocs that
1125 * ber_scanf may invoke.
1127 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1131 opidx = slap_req2op( tag );
1132 assert( opidx != SLAP_OP_LAST );
1133 INCR_OP_INITIATED( opidx );
1134 rc = (*(opfun[opidx]))( op, &rs );
1137 if ( rc == SLAPD_DISCONNECT ) {
1140 } else if ( opidx != SLAP_OP_LAST ) {
1141 /* increment completed operations count
1142 * only if operation was initiated
1143 * and rc != SLAPD_DISCONNECT */
1144 INCR_OP_COMPLETED( opidx );
1147 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1149 if ( opidx == SLAP_OP_BIND && conn->c_conn_state == SLAP_C_BINDING )
1150 conn->c_conn_state = SLAP_C_ACTIVE;
1152 cancel = op->o_cancel;
1153 if ( cancel != SLAP_CANCEL_NONE && cancel != SLAP_CANCEL_DONE ) {
1154 if ( cancel == SLAP_CANCEL_REQ ) {
1155 op->o_cancel = rc == SLAPD_ABANDON
1156 ? SLAP_CANCEL_ACK : LDAP_TOO_LATE;
1160 /* Fake a cond_wait with thread_yield, then
1161 * verify the result properly mutex-protected.
1163 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1165 ldap_pvt_thread_yield();
1166 } while ( (cancel = op->o_cancel) != SLAP_CANCEL_NONE
1167 && cancel != SLAP_CANCEL_DONE );
1168 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1169 } while ( (cancel = op->o_cancel) != SLAP_CANCEL_NONE
1170 && cancel != SLAP_CANCEL_DONE );
1173 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1176 if ( rc != LDAP_X_TXN_SPECIFY_OKAY )
1179 LDAP_STAILQ_REMOVE( &conn->c_ops, op, Operation, o_next);
1180 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1182 conn->c_n_ops_executing--;
1183 conn->c_n_ops_completed++;
1187 case LDAP_REQ_UNBIND:
1188 /* c_mutex is locked */
1189 connection_closing( conn,
1190 tag == LDAP_REQ_UNBIND ? NULL : "operations error" );
1194 connection_resched( conn );
1195 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1197 if ( rc != LDAP_X_TXN_SPECIFY_OKAY )
1200 slap_op_free( op, ctx );
1205 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1207 Connection *connection_client_setup(
1209 ldap_pvt_thread_start_t *func,
1213 ber_socket_t sfd = SLAP_SOCKNEW( s );
1215 c = connection_init( sfd, (Listener *)&dummy_list, "", "",
1216 CONN_IS_CLIENT, 0, NULL
1217 LDAP_PF_LOCAL_SENDMSG_ARG(NULL));
1219 c->c_clientfunc = func;
1220 c->c_clientarg = arg;
1222 slapd_add_internal( sfd, 0 );
1227 void connection_client_enable(
1230 slapd_set_read( c->c_sd, 1 );
1233 void connection_client_stop(
1237 ber_socket_t s = c->c_sd;
1239 /* get (locked) connection */
1240 c = connection_get( s );
1242 assert( c->c_conn_state == SLAP_C_CLIENT );
1244 c->c_listener = NULL;
1245 c->c_conn_state = SLAP_C_INVALID;
1246 c->c_struct_state = SLAP_C_UNUSED;
1247 c->c_sd = AC_SOCKET_INVALID;
1248 c->c_close_reason = "?"; /* should never be needed */
1250 c->c_sb = ber_sockbuf_alloc( );
1252 ber_len_t max = sockbuf_max_incoming;
1253 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
1255 slapd_remove( s, sb, 0, 1, 0 );
1257 connection_return( c );
1260 static int connection_read( ber_socket_t s, conn_readinfo *cri );
1262 static void* connection_read_thread( void* ctx, void* argv )
1265 conn_readinfo cri = { NULL, NULL, NULL, NULL, 0 };
1266 ber_socket_t s = (long)argv;
1269 * read incoming LDAP requests. If there is more than one,
1270 * the first one is returned with new_op
1273 if( ( rc = connection_read( s, &cri ) ) < 0 ) {
1274 Debug( LDAP_DEBUG_CONNS, "connection_read(%d) error\n", s, 0, 0 );
1275 return (void*)(long)rc;
1278 /* execute a single queued request in the same thread */
1279 if( cri.op && !cri.nullop ) {
1280 rc = (long)connection_operation( ctx, cri.op );
1281 } else if ( cri.func ) {
1282 rc = (long)cri.func( ctx, cri.arg );
1285 return (void*)(long)rc;
1288 int connection_read_activate( ber_socket_t s )
1293 * suspend reading on this file descriptor until a connection processing
1294 * thread reads data on it. Otherwise the listener thread will repeatedly
1295 * submit the same event on it to the pool.
1297 rc = slapd_clr_read( s, 0 );
1301 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1302 connection_read_thread, (void *)(long)s );
1305 Debug( LDAP_DEBUG_ANY,
1306 "connection_read_activate(%d): submit failed (%d)\n",
1314 connection_read( ber_socket_t s, conn_readinfo *cri )
1319 assert( connections != NULL );
1321 /* get (locked) connection */
1322 c = connection_get( s );
1325 Debug( LDAP_DEBUG_ANY,
1326 "connection_read(%ld): no connection!\n",
1334 if( c->c_conn_state == SLAP_C_CLOSING ) {
1335 Debug( LDAP_DEBUG_CONNS,
1336 "connection_read(%d): closing, ignoring input for id=%lu\n",
1337 s, c->c_connid, 0 );
1338 connection_return( c );
1342 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1343 cri->func = c->c_clientfunc;
1344 cri->arg = c->c_clientarg;
1345 /* read should already be cleared */
1346 connection_return( c );
1350 Debug( LDAP_DEBUG_TRACE,
1351 "connection_read(%d): checking for input on id=%lu\n",
1352 s, c->c_connid, 0 );
1355 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1356 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1358 Debug( LDAP_DEBUG_TRACE,
1359 "connection_read(%d): TLS accept failure "
1360 "error=%d id=%lu, closing\n",
1361 s, rc, c->c_connid );
1363 c->c_needs_tls_accept = 0;
1364 /* c_mutex is locked */
1365 connection_closing( c, "TLS negotiation failure" );
1366 connection_close( c );
1367 connection_return( c );
1370 } else if ( rc == 0 ) {
1372 struct berval authid = BER_BVNULL;
1375 c->c_needs_tls_accept = 0;
1377 /* we need to let SASL know */
1378 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1380 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1381 if( c->c_tls_ssf > c->c_ssf ) {
1382 c->c_ssf = c->c_tls_ssf;
1385 rc = dnX509peerNormalize( ssl, &authid );
1386 if ( rc != LDAP_SUCCESS ) {
1387 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1388 "unable to get TLS client DN, error=%d id=%lu\n",
1389 s, rc, c->c_connid );
1391 sprintf(msgbuf, "tls_ssf=%u ssf=%u", c->c_tls_ssf, c->c_ssf);
1392 Statslog( LDAP_DEBUG_STATS,
1393 "conn=%lu fd=%d TLS established %s tls_proto=%s tls_cipher=%s\n",
1394 c->c_connid, (int) s,
1395 msgbuf, ldap_pvt_tls_get_version( ssl ), ldap_pvt_tls_get_cipher( ssl ));
1396 slap_sasl_external( c, c->c_tls_ssf, &authid );
1397 if ( authid.bv_val ) free( authid.bv_val );
1400 struct berval cbv = { sizeof(cbinding), cbinding };
1401 if ( ldap_pvt_tls_get_unique( ssl, &cbv, 1 ))
1402 slap_sasl_cbinding( c, &cbv );
1404 } else if ( rc == 1 && ber_sockbuf_ctrl( c->c_sb,
1405 LBER_SB_OPT_NEEDS_WRITE, NULL )) { /* need to retry */
1406 slapd_set_write( s, 1 );
1407 connection_return( c );
1411 /* if success and data is ready, fall thru to data input loop */
1412 if( !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1414 slapd_set_read( s, 1 );
1415 connection_return( c );
1421 #ifdef HAVE_CYRUS_SASL
1422 if ( c->c_sasl_layers ) {
1423 /* If previous layer is not removed yet, give up for now */
1424 if ( !c->c_sasl_sockctx ) {
1425 slapd_set_read( s, 1 );
1426 connection_return( c );
1430 c->c_sasl_layers = 0;
1432 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1433 if( rc != LDAP_SUCCESS ) {
1434 Debug( LDAP_DEBUG_TRACE,
1435 "connection_read(%d): SASL install error "
1436 "error=%d id=%lu, closing\n",
1437 s, rc, c->c_connid );
1439 /* c_mutex is locked */
1440 connection_closing( c, "SASL layer install failure" );
1441 connection_close( c );
1442 connection_return( c );
1448 #define CONNECTION_INPUT_LOOP 1
1449 /* #define DATA_READY_LOOP 1 */
1452 /* How do we do this without getting into a busy loop ? */
1453 rc = connection_input( c, cri );
1455 #ifdef DATA_READY_LOOP
1456 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1457 #elif defined CONNECTION_INPUT_LOOP
1464 Debug( LDAP_DEBUG_CONNS,
1465 "connection_read(%d): input error=%d id=%lu, closing.\n",
1466 s, rc, c->c_connid );
1468 /* c_mutex is locked */
1469 connection_closing( c, conn_lost_str );
1470 connection_close( c );
1471 connection_return( c );
1475 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1476 slapd_set_write( s, 0 );
1479 slapd_set_read( s, 1 );
1480 connection_return( c );
1486 connection_input( Connection *conn , conn_readinfo *cri )
1494 #ifdef LDAP_CONNECTIONLESS
1501 if ( conn->c_currentber == NULL &&
1502 ( conn->c_currentber = ber_alloc()) == NULL )
1504 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1510 #ifdef LDAP_CONNECTIONLESS
1511 if ( conn->c_is_udp ) {
1512 #if defined(LDAP_PF_INET6)
1513 char peername[sizeof("IP=[ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]:65535")];
1514 char addr[INET6_ADDRSTRLEN];
1516 char peername[sizeof("IP=255.255.255.255:65336")];
1517 char addr[INET_ADDRSTRLEN];
1519 const char *peeraddr_string = NULL;
1521 len = ber_int_sb_read(conn->c_sb, &peeraddr, sizeof(Sockaddr));
1522 if (len != sizeof(Sockaddr)) return 1;
1524 #if defined(LDAP_PF_INET6)
1525 if (peeraddr.sa_addr.sa_family == AF_INET6) {
1526 if ( IN6_IS_ADDR_V4MAPPED(&peeraddr.sa_in6_addr.sin6_addr) ) {
1527 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1528 peeraddr_string = inet_ntop( AF_INET,
1529 ((struct in_addr *)&peeraddr.sa_in6_addr.sin6_addr.s6_addr[12]),
1530 addr, sizeof(addr) );
1531 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1532 peeraddr_string = inet_ntoa( *((struct in_addr *)
1533 &peeraddr.sa_in6_addr.sin6_addr.s6_addr[12]) );
1534 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1535 if ( !peeraddr_string ) peeraddr_string = SLAP_STRING_UNKNOWN;
1536 sprintf( peername, "IP=%s:%d", peeraddr_string,
1537 (unsigned) ntohs( peeraddr.sa_in6_addr.sin6_port ) );
1539 peeraddr_string = inet_ntop( AF_INET6,
1540 &peeraddr.sa_in6_addr.sin6_addr,
1541 addr, sizeof addr );
1542 if ( !peeraddr_string ) peeraddr_string = SLAP_STRING_UNKNOWN;
1543 sprintf( peername, "IP=[%s]:%d", peeraddr_string,
1544 (unsigned) ntohs( peeraddr.sa_in6_addr.sin6_port ) );
1548 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1550 peeraddr_string = inet_ntop( AF_INET, &peeraddr.sa_in_addr.sin_addr,
1551 addr, sizeof(addr) );
1552 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1553 peeraddr_string = inet_ntoa( peeraddr.sa_in_addr.sin_addr );
1554 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1555 sprintf( peername, "IP=%s:%d",
1557 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1559 Statslog( LDAP_DEBUG_STATS,
1560 "conn=%lu UDP request from %s (%s) accepted.\n",
1561 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1565 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1566 if ( tag != LDAP_TAG_MESSAGE ) {
1567 int err = sock_errno();
1569 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1570 /* log, close and send error */
1571 Debug( LDAP_DEBUG_TRACE,
1572 "ber_get_next on fd %d failed errno=%d (%s)\n",
1573 conn->c_sd, err, sock_errstr(err) );
1574 ber_free( conn->c_currentber, 1 );
1575 conn->c_currentber = NULL;
1582 ber = conn->c_currentber;
1583 conn->c_currentber = NULL;
1585 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1586 /* log, close and send error */
1587 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0, 0 );
1592 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1593 /* log, close and send error */
1594 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0, 0 );
1600 #ifdef LDAP_CONNECTIONLESS
1601 if( conn->c_is_udp ) {
1602 if( tag == LBER_OCTETSTRING ) {
1603 if ( (tag = ber_get_stringa( ber, &cdn )) != LBER_ERROR )
1604 tag = ber_peek_tag( ber, &len );
1606 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1607 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1614 if(tag == LDAP_REQ_BIND) {
1615 /* immediately abandon all existing operations upon BIND */
1616 connection_abandon( conn );
1620 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++, ctx );
1622 Debug( LDAP_DEBUG_TRACE, "op tag 0x%lx, time %ld\n", tag,
1623 (long) op->o_time, 0);
1626 /* clear state if the connection is being reused from inactive */
1627 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1628 memset( &conn->c_pagedresults_state, 0,
1629 sizeof( conn->c_pagedresults_state ) );
1632 op->o_res_ber = NULL;
1634 #ifdef LDAP_CONNECTIONLESS
1635 if (conn->c_is_udp) {
1637 ber_str2bv( cdn, 0, 1, &op->o_dn );
1638 op->o_protocol = LDAP_VERSION2;
1640 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1641 if (op->o_res_ber == NULL) return 1;
1643 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1644 sizeof(struct sockaddr), 0 );
1646 if (rc != sizeof(struct sockaddr)) {
1647 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1651 if (op->o_protocol == LDAP_VERSION2) {
1652 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1654 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1659 #endif /* LDAP_CONNECTIONLESS */
1663 /* Don't process requests when the conn is in the middle of a
1664 * Bind, or if it's closing. Also, don't let any single conn
1665 * use up all the available threads, and don't execute if we're
1666 * currently blocked on output. And don't execute if there are
1667 * already pending ops, let them go first. Abandon operations
1668 * get exceptions to some, but not all, cases.
1672 /* Abandon and Unbind are exempt from these checks */
1673 if (conn->c_conn_state == SLAP_C_CLOSING) {
1676 } else if (conn->c_writewaiter) {
1677 defer = "awaiting write";
1679 } else if (conn->c_n_ops_pending) {
1680 defer = "pending operations";
1684 case LDAP_REQ_ABANDON:
1685 /* Unbind is exempt from these checks */
1686 if (conn->c_n_ops_executing >= connection_pool_max/2) {
1687 defer = "too many executing";
1689 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1694 case LDAP_REQ_UNBIND:
1699 int max = conn->c_dn.bv_len
1700 ? slap_conn_max_pending_auth
1701 : slap_conn_max_pending;
1703 Debug( LDAP_DEBUG_ANY,
1704 "connection_input: conn=%lu deferring operation: %s\n",
1705 conn->c_connid, defer, 0 );
1706 conn->c_n_ops_pending++;
1707 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1708 rc = ( conn->c_n_ops_pending > max ) ? -1 : 0;
1711 conn->c_n_ops_executing++;
1714 * The first op will be processed in the same thread context,
1715 * as long as there is only one op total.
1716 * Subsequent ops will be submitted to the pool by
1717 * calling connection_op_activate()
1719 if ( cri->op == NULL ) {
1720 /* the first incoming request */
1721 connection_op_queue( op );
1724 if ( !cri->nullop ) {
1726 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1727 connection_operation, (void *) cri->op );
1729 connection_op_activate( op );
1734 if ( conn->c_struct_state != SLAP_C_USED ) {
1735 /* connection must have got closed underneath us */
1740 assert( conn->c_struct_state == SLAP_C_USED );
1745 connection_resched( Connection *conn )
1749 if( conn->c_writewaiter )
1752 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1753 Debug( LDAP_DEBUG_CONNS, "connection_resched: "
1754 "attempting closing conn=%lu sd=%d\n",
1755 conn->c_connid, conn->c_sd, 0 );
1756 connection_close( conn );
1760 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1761 /* other states need different handling */
1765 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1766 if ( conn->c_n_ops_executing > connection_pool_max/2 ) break;
1768 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1769 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1771 /* pending operations should not be marked for abandonment */
1772 assert(!op->o_abandon);
1774 conn->c_n_ops_pending--;
1775 conn->c_n_ops_executing++;
1777 connection_op_activate( op );
1779 if ( conn->c_conn_state == SLAP_C_BINDING ) break;
1785 connection_init_log_prefix( Operation *op )
1787 if ( op->o_connid == (unsigned long)(-1) ) {
1788 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1789 "conn=-1 op=%lu", op->o_opid );
1792 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1793 "conn=%lu op=%lu", op->o_connid, op->o_opid );
1797 static int connection_bind_cleanup_cb( Operation *op, SlapReply *rs )
1799 op->o_conn->c_sasl_bindop = NULL;
1801 ch_free( op->o_callback );
1802 op->o_callback = NULL;
1804 return SLAP_CB_CONTINUE;
1807 static int connection_bind_cb( Operation *op, SlapReply *rs )
1809 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1810 op->o_conn->c_sasl_bind_in_progress =
1811 ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS );
1813 /* Moved here from bind.c due to ITS#4158 */
1814 op->o_conn->c_sasl_bindop = NULL;
1815 if ( op->orb_method == LDAP_AUTH_SASL ) {
1816 if( rs->sr_err == LDAP_SUCCESS ) {
1817 ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
1818 if( !BER_BVISEMPTY( &op->orb_edn ) ) {
1819 /* edn is always normalized already */
1820 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
1822 op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
1823 BER_BVZERO( &op->orb_edn );
1824 op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
1825 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1827 op->o_conn->c_sasl_ssf = op->orb_ssf;
1828 if( op->orb_ssf > op->o_conn->c_ssf ) {
1829 op->o_conn->c_ssf = op->orb_ssf;
1832 if( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
1833 ber_len_t max = sockbuf_max_incoming_auth;
1834 ber_sockbuf_ctrl( op->o_conn->c_sb,
1835 LBER_SB_OPT_SET_MAX_INCOMING, &max );
1838 /* log authorization identity */
1839 Statslog( LDAP_DEBUG_STATS,
1840 "%s BIND dn=\"%s\" mech=%s sasl_ssf=%d ssf=%d\n",
1842 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1843 op->o_conn->c_authmech.bv_val,
1844 op->orb_ssf, op->o_conn->c_ssf );
1846 Debug( LDAP_DEBUG_TRACE,
1847 "do_bind: SASL/%s bind: dn=\"%s\" sasl_ssf=%d\n",
1848 op->o_conn->c_authmech.bv_val,
1849 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1852 } else if ( rs->sr_err != LDAP_SASL_BIND_IN_PROGRESS ) {
1853 if ( !BER_BVISNULL( &op->o_conn->c_sasl_bind_mech ) ) {
1854 free( op->o_conn->c_sasl_bind_mech.bv_val );
1855 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1859 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1861 ch_free( op->o_callback );
1862 op->o_callback = NULL;
1864 return SLAP_CB_CONTINUE;
1867 static void connection_op_queue( Operation *op )
1869 ber_tag_t tag = op->o_tag;
1871 if (tag == LDAP_REQ_BIND) {
1872 slap_callback *sc = ch_calloc( 1, sizeof( slap_callback ));
1873 sc->sc_response = connection_bind_cb;
1874 sc->sc_cleanup = connection_bind_cleanup_cb;
1875 sc->sc_next = op->o_callback;
1876 op->o_callback = sc;
1877 op->o_conn->c_conn_state = SLAP_C_BINDING;
1880 if (!op->o_dn.bv_len) {
1881 op->o_authz = op->o_conn->c_authz;
1882 if ( BER_BVISNULL( &op->o_conn->c_sasl_authz_dn )) {
1883 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1884 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1886 ber_dupbv( &op->o_dn, &op->o_conn->c_sasl_authz_dn );
1887 ber_dupbv( &op->o_ndn, &op->o_conn->c_sasl_authz_dn );
1891 op->o_authtype = op->o_conn->c_authtype;
1892 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1894 if (!op->o_protocol) {
1895 op->o_protocol = op->o_conn->c_protocol
1896 ? op->o_conn->c_protocol : LDAP_VERSION3;
1899 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE &&
1900 op->o_protocol > LDAP_VERSION2)
1902 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1905 op->o_connid = op->o_conn->c_connid;
1906 connection_init_log_prefix( op );
1908 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1911 static int connection_op_activate( Operation *op )
1915 connection_op_queue( op );
1917 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1918 connection_operation, (void *) op );
1921 Debug( LDAP_DEBUG_ANY,
1922 "connection_op_activate: submit failed (%d) for conn=%lu\n",
1923 rc, op->o_connid, 0 );
1924 /* should move op to pending list */
1930 int connection_write(ber_socket_t s)
1936 assert( connections != NULL );
1938 c = connection_get( s );
1940 Debug( LDAP_DEBUG_ANY,
1941 "connection_write(%ld): no connection!\n",
1946 slapd_clr_write( s, 0 );
1949 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1950 connection_return( c );
1951 connection_read_activate( s );
1958 Debug( LDAP_DEBUG_TRACE,
1959 "connection_write(%d): waking output for id=%lu\n",
1960 s, c->c_connid, 0 );
1962 wantwrite = ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL );
1963 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL )) {
1964 /* don't wakeup twice */
1965 slapd_set_read( s, !wantwrite );
1968 slapd_set_write( s, 1 );
1971 /* If there are ops pending because of a writewaiter,
1974 while ((op = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
1975 if ( !c->c_writewaiter ) break;
1976 if ( c->c_n_ops_executing > connection_pool_max/2 ) break;
1978 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
1979 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1981 /* pending operations should not be marked for abandonment */
1982 assert(!op->o_abandon);
1984 c->c_n_ops_pending--;
1985 c->c_n_ops_executing++;
1987 connection_op_activate( op );
1992 connection_return( c );
1997 typedef struct conn_fake_extblock {
2000 } conn_fake_extblock;
2003 connection_fake_destroy(
2007 Connection conn = {0};
2009 Opheader ohdr = {0};
2011 conn_fake_extblock *eb = data;
2014 op.o_hdr->oh_extensions = eb->eb_op;
2015 conn.c_extensions = eb->eb_conn;
2020 ber_memfree_x( eb, NULL );
2021 slapi_int_free_object_extensions( SLAPI_X_EXT_OPERATION, &op );
2022 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION, &conn );
2027 connection_fake_init(
2029 OperationBuffer *opbuf,
2032 connection_fake_init2( conn, opbuf, ctx, 1 );
2036 operation_fake_init(
2042 /* set memory context */
2043 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx,
2045 op->o_tmpmfuncs = &slap_sl_mfuncs;
2046 op->o_threadctx = ctx;
2047 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
2049 op->o_counters = &slap_counters;
2051 op->o_connid = op->o_conn->c_connid;
2052 connection_init_log_prefix( op );
2057 connection_fake_init2(
2059 OperationBuffer *opbuf,
2063 Operation *op = (Operation *) opbuf;
2065 conn->c_connid = -1;
2066 conn->c_conn_idx = -1;
2067 conn->c_send_ldap_result = slap_send_ldap_result;
2068 conn->c_send_search_entry = slap_send_search_entry;
2069 conn->c_send_search_reference = slap_send_search_reference;
2070 conn->c_send_ldap_extended = slap_send_ldap_extended;
2071 conn->c_send_ldap_intermediate = slap_send_ldap_intermediate;
2072 conn->c_listener = (Listener *)&dummy_list;
2073 conn->c_peer_domain = slap_empty_bv;
2074 conn->c_peer_name = slap_empty_bv;
2076 memset( opbuf, 0, sizeof( *opbuf ));
2077 op->o_hdr = &opbuf->ob_hdr;
2078 op->o_controls = opbuf->ob_controls;
2080 operation_fake_init( conn, op, ctx, newmem );
2083 if ( slapi_plugins_used ) {
2084 conn_fake_extblock *eb;
2087 /* Use thread keys to make sure these eventually get cleaned up */
2088 if ( ldap_pvt_thread_pool_getkey( ctx, (void *)connection_fake_init,
2090 eb = ch_malloc( sizeof( *eb ));
2091 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, conn );
2092 slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
2093 eb->eb_conn = conn->c_extensions;
2094 eb->eb_op = op->o_hdr->oh_extensions;
2095 ldap_pvt_thread_pool_setkey( ctx, (void *)connection_fake_init,
2096 eb, connection_fake_destroy, NULL, NULL );
2099 conn->c_extensions = eb->eb_conn;
2100 op->o_hdr->oh_extensions = eb->eb_op;
2103 #endif /* LDAP_SLAPI */
2105 slap_op_time( &op->o_time, &op->o_tincr );
2109 connection_assign_nextid( Connection *conn )
2111 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
2112 conn->c_connid = conn_nextid++;
2113 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );