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_mutex_destroy( &connections[i].c_write2_mutex );
158 ldap_pvt_thread_cond_destroy( &connections[i].c_write1_cv );
159 ldap_pvt_thread_cond_destroy( &connections[i].c_write2_cv );
161 if ( slapi_plugins_used ) {
162 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION,
172 ldap_pvt_thread_mutex_destroy( &connections_mutex );
173 ldap_pvt_thread_mutex_destroy( &conn_nextid_mutex );
178 * shutdown all connections
180 int connections_shutdown(void)
184 for ( i = 0; i < dtblsize; i++ ) {
185 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
186 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
187 if( connections[i].c_struct_state == SLAP_C_USED ) {
189 /* give persistent clients a chance to cleanup */
190 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
191 ldap_pvt_thread_pool_submit( &connection_pool,
192 connections[i].c_clientfunc, connections[i].c_clientarg );
194 /* c_mutex is locked */
195 connection_closing( &connections[i], "slapd shutdown" );
196 connection_close( &connections[i] );
199 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
207 * Timeout idle connections.
209 int connections_timeout_idle(time_t now)
211 int i = 0, writers = 0;
212 ber_socket_t connindex;
216 old = slapd_get_writetime();
218 for( c = connection_first( &connindex );
220 c = connection_next( c, &connindex ) )
222 /* Don't timeout a slow-running request or a persistent
223 * outbound connection. But if it has a writewaiter, see
224 * if the waiter has been there too long.
226 if(( c->c_n_ops_executing && !c->c_writewaiter)
227 || c->c_conn_state == SLAP_C_CLIENT ) {
231 if( global_idletimeout &&
232 difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
234 connection_closing( c, "idletimeout" );
235 connection_close( c );
239 if ( c->c_writewaiter && global_writetimeout ) {
241 if( difftime( c->c_activitytime+global_writetimeout, now) < 0 ) {
243 connection_closing( c, "writetimeout" );
244 connection_close( c );
250 connection_done( c );
251 if ( old && !writers )
252 slapd_clr_writetime( old );
257 /* Drop all client connections */
258 void connections_drop()
261 ber_socket_t connindex;
263 for( c = connection_first( &connindex );
265 c = connection_next( c, &connindex ) )
267 /* Don't close a slow-running request or a persistent
268 * outbound connection.
270 if(( c->c_n_ops_executing && !c->c_writewaiter)
271 || c->c_conn_state == SLAP_C_CLIENT ) {
274 connection_closing( c, "dropping" );
275 connection_close( c );
277 connection_done( c );
280 static Connection* connection_get( ber_socket_t s )
284 Debug( LDAP_DEBUG_ARGS,
285 "connection_get(%ld)\n",
288 assert( connections != NULL );
290 if(s == AC_SOCKET_INVALID) return NULL;
292 assert( s < dtblsize );
296 ldap_pvt_thread_mutex_lock( &c->c_mutex );
298 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
300 if( c->c_struct_state != SLAP_C_USED ) {
301 /* connection must have been closed due to resched */
303 Debug( LDAP_DEBUG_CONNS,
304 "connection_get(%d): connection not used\n",
306 assert( c->c_conn_state == SLAP_C_INVALID );
307 assert( c->c_sd == AC_SOCKET_INVALID );
309 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
313 Debug( LDAP_DEBUG_TRACE,
314 "connection_get(%d): got connid=%lu\n",
319 assert( c->c_struct_state == SLAP_C_USED );
320 assert( c->c_conn_state != SLAP_C_INVALID );
321 assert( c->c_sd != AC_SOCKET_INVALID );
323 #ifndef SLAPD_MONITOR
324 if ( global_idletimeout > 0 )
325 #endif /* ! SLAPD_MONITOR */
327 c->c_activitytime = slap_get_time();
334 static void connection_return( Connection *c )
336 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
339 Connection * connection_init(
343 const char* peername,
346 struct berval *authid
347 LDAP_PF_LOCAL_SENDMSG_ARG(struct berval *peerbv))
352 ber_socket_t sfd = SLAP_FD2SOCK(s);
354 assert( connections != NULL );
356 assert( listener != NULL );
357 assert( dnsname != NULL );
358 assert( peername != NULL );
361 assert( !( flags & CONN_IS_TLS ));
364 if( s == AC_SOCKET_INVALID ) {
365 Debug( LDAP_DEBUG_ANY,
366 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
371 assert( s < dtblsize );
373 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
376 assert( c->c_struct_state == SLAP_C_UNUSED );
380 c->c_send_ldap_result = slap_send_ldap_result;
381 c->c_send_search_entry = slap_send_search_entry;
382 c->c_send_search_reference = slap_send_search_reference;
383 c->c_send_ldap_extended = slap_send_ldap_extended;
384 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
386 BER_BVZERO( &c->c_authmech );
387 BER_BVZERO( &c->c_dn );
388 BER_BVZERO( &c->c_ndn );
390 c->c_listener = NULL;
391 BER_BVZERO( &c->c_peer_domain );
392 BER_BVZERO( &c->c_peer_name );
394 LDAP_STAILQ_INIT(&c->c_ops);
395 LDAP_STAILQ_INIT(&c->c_pending_ops);
398 c->c_txn = CONN_TXN_INACTIVE;
399 c->c_txn_backend = NULL;
400 LDAP_STAILQ_INIT(&c->c_txn_ops);
403 BER_BVZERO( &c->c_sasl_bind_mech );
405 c->c_sasl_authctx = NULL;
406 c->c_sasl_sockctx = NULL;
407 c->c_sasl_extra = NULL;
408 c->c_sasl_bindop = NULL;
410 c->c_sb = ber_sockbuf_alloc( );
413 ber_len_t max = sockbuf_max_incoming;
414 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
417 c->c_currentber = NULL;
419 /* should check status of thread calls */
420 ldap_pvt_thread_mutex_init( &c->c_mutex );
421 ldap_pvt_thread_mutex_init( &c->c_write1_mutex );
422 ldap_pvt_thread_mutex_init( &c->c_write2_mutex );
423 ldap_pvt_thread_cond_init( &c->c_write1_cv );
424 ldap_pvt_thread_cond_init( &c->c_write2_cv );
427 if ( slapi_plugins_used ) {
428 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
433 ldap_pvt_thread_mutex_lock( &c->c_mutex );
435 assert( BER_BVISNULL( &c->c_authmech ) );
436 assert( BER_BVISNULL( &c->c_dn ) );
437 assert( BER_BVISNULL( &c->c_ndn ) );
438 assert( c->c_listener == NULL );
439 assert( BER_BVISNULL( &c->c_peer_domain ) );
440 assert( BER_BVISNULL( &c->c_peer_name ) );
441 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
442 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
444 assert( c->c_txn == CONN_TXN_INACTIVE );
445 assert( c->c_txn_backend == NULL );
446 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
448 assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
449 assert( c->c_sasl_done == 0 );
450 assert( c->c_sasl_authctx == NULL );
451 assert( c->c_sasl_sockctx == NULL );
452 assert( c->c_sasl_extra == NULL );
453 assert( c->c_sasl_bindop == NULL );
454 assert( c->c_currentber == NULL );
455 assert( c->c_writewaiter == 0);
456 assert( c->c_writers == 0);
458 c->c_listener = listener;
461 if ( flags & CONN_IS_CLIENT ) {
463 ldap_pvt_thread_mutex_lock( &connections_mutex );
464 c->c_conn_state = SLAP_C_CLIENT;
465 c->c_struct_state = SLAP_C_USED;
466 ldap_pvt_thread_mutex_unlock( &connections_mutex );
467 c->c_close_reason = "?"; /* should never be needed */
468 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &sfd );
469 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
474 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
475 ber_str2bv( peername, 0, 1, &c->c_peer_name );
477 c->c_n_ops_received = 0;
478 c->c_n_ops_executing = 0;
479 c->c_n_ops_pending = 0;
480 c->c_n_ops_completed = 0;
486 /* set to zero until bind, implies LDAP_VERSION3 */
489 #ifndef SLAPD_MONITOR
490 if ( global_idletimeout > 0 )
491 #endif /* ! SLAPD_MONITOR */
493 c->c_activitytime = c->c_starttime = slap_get_time();
496 #ifdef LDAP_CONNECTIONLESS
498 if( flags & CONN_IS_UDP ) {
501 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
502 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
504 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
505 LBER_SBIOD_LEVEL_PROVIDER, (void *)&sfd );
506 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
507 LBER_SBIOD_LEVEL_PROVIDER, NULL );
509 #endif /* LDAP_CONNECTIONLESS */
511 if ( flags & CONN_IS_IPC ) {
513 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
514 LBER_SBIOD_LEVEL_PROVIDER, (void*)"ipc_" );
516 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_fd,
517 LBER_SBIOD_LEVEL_PROVIDER, (void *)&sfd );
518 #ifdef LDAP_PF_LOCAL_SENDMSG
519 if ( !BER_BVISEMPTY( peerbv ))
520 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_UNGET_BUF, peerbv );
523 #endif /* LDAP_PF_LOCAL */
526 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
527 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
529 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
530 LBER_SBIOD_LEVEL_PROVIDER, (void *)&sfd );
534 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
535 INT_MAX, (void*)"ldap_" );
538 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
539 c /* non-NULL */ ) < 0 )
541 Debug( LDAP_DEBUG_ANY,
542 "connection_init(%d, %s): set nonblocking failed\n",
543 s, c->c_peer_name.bv_val, 0 );
546 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
547 id = c->c_connid = conn_nextid++;
548 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
550 ldap_pvt_thread_mutex_lock( &connections_mutex );
551 c->c_conn_state = SLAP_C_INACTIVE;
552 c->c_struct_state = SLAP_C_USED;
553 ldap_pvt_thread_mutex_unlock( &connections_mutex );
554 c->c_close_reason = "?"; /* should never be needed */
556 c->c_ssf = c->c_transport_ssf = ssf;
560 if ( flags & CONN_IS_TLS ) {
562 c->c_needs_tls_accept = 1;
565 c->c_needs_tls_accept = 0;
569 slap_sasl_open( c, 0 );
570 slap_sasl_external( c, ssf, authid );
572 slapd_add_internal( s, 1 );
574 backend_connection_init(c);
575 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
577 if ( !(flags & CONN_IS_UDP ))
578 Statslog( LDAP_DEBUG_STATS,
579 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
580 id, (long) s, peername, listener->sl_name.bv_val, 0 );
585 void connection2anonymous( Connection *c )
587 assert( connections != NULL );
591 ber_len_t max = sockbuf_max_incoming;
592 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
595 if ( !BER_BVISNULL( &c->c_authmech ) ) {
596 ch_free(c->c_authmech.bv_val);
598 BER_BVZERO( &c->c_authmech );
600 if ( !BER_BVISNULL( &c->c_dn ) ) {
601 ch_free(c->c_dn.bv_val);
603 BER_BVZERO( &c->c_dn );
605 if ( !BER_BVISNULL( &c->c_ndn ) ) {
606 ch_free(c->c_ndn.bv_val);
608 BER_BVZERO( &c->c_ndn );
610 if ( !BER_BVISNULL( &c->c_sasl_authz_dn ) ) {
611 ber_memfree_x( c->c_sasl_authz_dn.bv_val, NULL );
613 BER_BVZERO( &c->c_sasl_authz_dn );
615 c->c_authz_backend = NULL;
619 connection_destroy( Connection *c )
621 unsigned long connid;
622 const char *close_reason;
626 assert( connections != NULL );
628 assert( c->c_struct_state != SLAP_C_UNUSED );
629 assert( c->c_conn_state != SLAP_C_INVALID );
630 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
631 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
633 assert( c->c_txn == CONN_TXN_INACTIVE );
634 assert( c->c_txn_backend == NULL );
635 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
637 assert( c->c_writewaiter == 0);
638 assert( c->c_writers == 0);
640 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
641 connid = c->c_connid;
642 close_reason = c->c_close_reason;
644 ldap_pvt_thread_mutex_lock( &connections_mutex );
645 c->c_struct_state = SLAP_C_PENDING;
646 ldap_pvt_thread_mutex_unlock( &connections_mutex );
648 backend_connection_destroy(c);
653 c->c_activitytime = c->c_starttime = 0;
655 connection2anonymous( c );
656 c->c_listener = NULL;
658 if(c->c_peer_domain.bv_val != NULL) {
659 free(c->c_peer_domain.bv_val);
661 BER_BVZERO( &c->c_peer_domain );
662 if(c->c_peer_name.bv_val != NULL) {
663 free(c->c_peer_name.bv_val);
665 BER_BVZERO( &c->c_peer_name );
667 c->c_sasl_bind_in_progress = 0;
668 if(c->c_sasl_bind_mech.bv_val != NULL) {
669 free(c->c_sasl_bind_mech.bv_val);
671 BER_BVZERO( &c->c_sasl_bind_mech );
673 slap_sasl_close( c );
675 if ( c->c_currentber != NULL ) {
676 ber_free( c->c_currentber, 1 );
677 c->c_currentber = NULL;
682 /* call destructors, then constructors; avoids unnecessary allocation */
683 if ( slapi_plugins_used ) {
684 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
689 c->c_sd = AC_SOCKET_INVALID;
690 c->c_conn_state = SLAP_C_INVALID;
691 c->c_struct_state = SLAP_C_UNUSED;
692 c->c_close_reason = "?"; /* should never be needed */
695 c->c_sb = ber_sockbuf_alloc( );
697 ber_len_t max = sockbuf_max_incoming;
698 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
701 /* c must be fully reset by this point; when we call slapd_remove
702 * it may get immediately reused by a new connection.
704 if ( sd != AC_SOCKET_INVALID ) {
705 slapd_remove( sd, sb, 1, 0, 0 );
707 if ( close_reason == NULL ) {
708 Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed\n",
709 connid, (long) sd, 0, 0, 0 );
711 Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed (%s)\n",
712 connid, (long) sd, close_reason, 0, 0 );
717 int connection_valid( Connection *c )
719 /* c_mutex must be locked by caller */
723 return c->c_struct_state == SLAP_C_USED &&
724 c->c_conn_state >= SLAP_C_ACTIVE &&
725 c->c_conn_state <= SLAP_C_CLIENT;
728 static void connection_abandon( Connection *c )
730 /* c_mutex must be locked by caller */
732 Operation *o, *next, op = {0};
737 op.o_connid = c->c_connid;
738 op.o_tag = LDAP_REQ_ABANDON;
740 for ( o = LDAP_STAILQ_FIRST( &c->c_ops ); o; o=next ) {
741 SlapReply rs = {REP_RESULT};
743 next = LDAP_STAILQ_NEXT( o, o_next );
744 op.orn_msgid = o->o_msgid;
746 op.o_bd = frontendDB;
747 frontendDB->be_abandon( &op, &rs );
751 /* remove operations in pending transaction */
752 while ( (o = LDAP_STAILQ_FIRST( &c->c_txn_ops )) != NULL) {
753 LDAP_STAILQ_REMOVE_HEAD( &c->c_txn_ops, o_next );
754 LDAP_STAILQ_NEXT(o, o_next) = NULL;
755 slap_op_free( o, NULL );
758 /* clear transaction */
759 c->c_txn_backend = NULL;
760 c->c_txn = CONN_TXN_INACTIVE;
763 /* remove pending operations */
764 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
765 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
766 LDAP_STAILQ_NEXT(o, o_next) = NULL;
767 slap_op_free( o, NULL );
772 connection_wake_writers( Connection *c )
774 /* wake write blocked operations */
775 ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
776 if ( c->c_writers > 0 ) {
777 c->c_writers = -c->c_writers;
778 ldap_pvt_thread_cond_broadcast( &c->c_write1_cv );
779 ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
780 if ( c->c_writewaiter ) {
781 ldap_pvt_thread_mutex_lock( &c->c_write2_mutex );
782 ldap_pvt_thread_cond_signal( &c->c_write2_cv );
783 slapd_clr_write( c->c_sd, 1 );
784 ldap_pvt_thread_mutex_unlock( &c->c_write2_mutex );
786 ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
787 while ( c->c_writers ) {
788 ldap_pvt_thread_cond_wait( &c->c_write1_cv, &c->c_write1_mutex );
790 ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
792 ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
793 slapd_clr_write( c->c_sd, 1 );
797 void connection_closing( Connection *c, const char *why )
799 assert( connections != NULL );
802 if ( c->c_struct_state != SLAP_C_USED ) return;
804 assert( c->c_conn_state != SLAP_C_INVALID );
806 /* c_mutex must be locked by caller */
808 if( c->c_conn_state != SLAP_C_CLOSING ) {
809 Debug( LDAP_DEBUG_CONNS,
810 "connection_closing: readying conn=%lu sd=%d for close\n",
811 c->c_connid, c->c_sd, 0 );
812 /* update state to closing */
813 c->c_conn_state = SLAP_C_CLOSING;
814 c->c_close_reason = why;
816 /* don't listen on this port anymore */
817 slapd_clr_read( c->c_sd, 0 );
819 /* abandon active operations */
820 connection_abandon( c );
822 /* wake write blocked operations */
823 connection_wake_writers( c );
825 } else if( why == NULL && c->c_close_reason == conn_lost_str ) {
826 /* Client closed connection after doing Unbind. */
827 c->c_close_reason = NULL;
832 connection_close( Connection *c )
834 assert( connections != NULL );
837 if ( c->c_struct_state != SLAP_C_USED ) return;
839 assert( c->c_conn_state == SLAP_C_CLOSING );
841 /* NOTE: c_mutex should be locked by caller */
843 if ( !LDAP_STAILQ_EMPTY(&c->c_ops) ||
844 !LDAP_STAILQ_EMPTY(&c->c_pending_ops) )
846 Debug( LDAP_DEBUG_CONNS,
847 "connection_close: deferring conn=%lu sd=%d\n",
848 c->c_connid, c->c_sd, 0 );
852 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
853 c->c_connid, c->c_sd, 0 );
855 connection_destroy( c );
858 unsigned long connections_nextid(void)
861 assert( connections != NULL );
863 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
867 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
873 * Loop through the connections:
875 * for (c = connection_first(&i); c; c = connection_next(c, &i)) ...;
876 * connection_done(c);
878 * 'i' is the cursor, initialized by connection_first().
879 * 'c_mutex' is locked in the returned connection. The functions must
880 * be passed the previous return value so they can unlock it again.
883 Connection* connection_first( ber_socket_t *index )
885 assert( connections != NULL );
886 assert( index != NULL );
888 ldap_pvt_thread_mutex_lock( &connections_mutex );
889 for( *index = 0; *index < dtblsize; (*index)++) {
890 if( connections[*index].c_struct_state != SLAP_C_UNINITIALIZED ) {
894 ldap_pvt_thread_mutex_unlock( &connections_mutex );
896 return connection_next(NULL, index);
899 /* Next connection in loop, see connection_first() */
900 Connection* connection_next( Connection *c, ber_socket_t *index )
902 assert( connections != NULL );
903 assert( index != NULL );
904 assert( *index <= dtblsize );
906 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
910 ldap_pvt_thread_mutex_lock( &connections_mutex );
911 for(; *index < dtblsize; (*index)++) {
913 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
914 /* FIXME: accessing c_conn_state without locking c_mutex */
915 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
919 if( connections[*index].c_struct_state == SLAP_C_USED ) {
920 c = &connections[(*index)++];
921 if ( ldap_pvt_thread_mutex_trylock( &c->c_mutex )) {
923 ldap_pvt_thread_mutex_unlock( &connections_mutex );
924 ldap_pvt_thread_mutex_lock( &c->c_mutex );
925 ldap_pvt_thread_mutex_lock( &connections_mutex );
926 if ( c->c_struct_state != SLAP_C_USED ) {
927 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
932 assert( c->c_conn_state != SLAP_C_INVALID );
936 c_struct = connections[*index].c_struct_state;
937 if ( c_struct == SLAP_C_PENDING )
939 assert( c_struct == SLAP_C_UNUSED );
940 /* FIXME: accessing c_conn_state without locking c_mutex */
941 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
944 ldap_pvt_thread_mutex_unlock( &connections_mutex );
948 /* End connection loop, see connection_first() */
949 void connection_done( Connection *c )
951 assert( connections != NULL );
953 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
957 * connection_activity - handle the request operation op on connection
958 * conn. This routine figures out what kind of operation it is and
959 * calls the appropriate stub to handle it.
963 /* FIXME: returns 0 in case of failure */
964 #define INCR_OP_INITIATED(index) \
966 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); \
967 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_initiated_[(index)], 1); \
968 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); \
970 #define INCR_OP_COMPLETED(index) \
972 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); \
973 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_completed, 1); \
974 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_completed_[(index)], 1); \
975 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); \
977 #else /* !SLAPD_MONITOR */
978 #define INCR_OP_INITIATED(index) do { } while (0)
979 #define INCR_OP_COMPLETED(index) \
981 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); \
982 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_completed, 1); \
983 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); \
985 #endif /* !SLAPD_MONITOR */
988 * NOTE: keep in sync with enum in slapd.h
990 static BI_op_func *opfun[] = {
1004 /* Counters are per-thread, not per-connection.
1007 conn_counter_destroy( void *key, void *data )
1009 slap_counters_t **prev, *sc;
1011 ldap_pvt_thread_mutex_lock( &slap_counters.sc_mutex );
1012 for ( prev = &slap_counters.sc_next, sc = slap_counters.sc_next; sc;
1013 prev = &sc->sc_next, sc = sc->sc_next ) {
1017 *prev = sc->sc_next;
1018 /* Copy data to main counter */
1019 ldap_pvt_mp_add( slap_counters.sc_bytes, sc->sc_bytes );
1020 ldap_pvt_mp_add( slap_counters.sc_pdu, sc->sc_pdu );
1021 ldap_pvt_mp_add( slap_counters.sc_entries, sc->sc_entries );
1022 ldap_pvt_mp_add( slap_counters.sc_refs, sc->sc_refs );
1023 ldap_pvt_mp_add( slap_counters.sc_ops_initiated, sc->sc_ops_initiated );
1024 ldap_pvt_mp_add( slap_counters.sc_ops_completed, sc->sc_ops_completed );
1025 #ifdef SLAPD_MONITOR
1026 for ( i = 0; i < SLAP_OP_LAST; i++ ) {
1027 ldap_pvt_mp_add( slap_counters.sc_ops_initiated_[ i ], sc->sc_ops_initiated_[ i ] );
1028 ldap_pvt_mp_add( slap_counters.sc_ops_initiated_[ i ], sc->sc_ops_completed_[ i ] );
1030 #endif /* SLAPD_MONITOR */
1031 slap_counters_destroy( sc );
1032 ber_memfree_x( data, NULL );
1036 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_mutex );
1040 conn_counter_init( Operation *op, void *ctx )
1042 slap_counters_t *sc;
1045 if ( ldap_pvt_thread_pool_getkey(
1046 ctx, (void *)conn_counter_init, &vsc, NULL ) || !vsc ) {
1047 vsc = ch_malloc( sizeof( slap_counters_t ));
1049 slap_counters_init( sc );
1050 ldap_pvt_thread_pool_setkey( ctx, (void*)conn_counter_init, vsc,
1051 conn_counter_destroy, NULL, NULL );
1053 ldap_pvt_thread_mutex_lock( &slap_counters.sc_mutex );
1054 sc->sc_next = slap_counters.sc_next;
1055 slap_counters.sc_next = sc;
1056 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_mutex );
1058 op->o_counters = vsc;
1062 connection_operation( void *ctx, void *arg_v )
1064 int rc = LDAP_OTHER, cancel;
1065 Operation *op = arg_v;
1066 SlapReply rs = {REP_RESULT};
1067 ber_tag_t tag = op->o_tag;
1068 slap_op_t opidx = SLAP_OP_LAST;
1069 Connection *conn = op->o_conn;
1070 void *memctx = NULL;
1071 void *memctx_null = NULL;
1074 conn_counter_init( op, ctx );
1075 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1076 /* FIXME: returns 0 in case of failure */
1077 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_initiated, 1);
1078 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1080 op->o_threadctx = ctx;
1081 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
1085 case LDAP_REQ_UNBIND:
1087 case LDAP_REQ_DELETE:
1088 case LDAP_REQ_MODDN:
1089 case LDAP_REQ_MODIFY:
1090 case LDAP_REQ_COMPARE:
1091 case LDAP_REQ_SEARCH:
1092 case LDAP_REQ_ABANDON:
1093 case LDAP_REQ_EXTENDED:
1096 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1097 "conn %lu unknown LDAP request 0x%lx\n",
1098 conn->c_connid, tag, 0 );
1099 op->o_tag = LBER_ERROR;
1100 rs.sr_err = LDAP_PROTOCOL_ERROR;
1101 rs.sr_text = "unknown LDAP request";
1102 send_ldap_disconnect( op, &rs );
1103 rc = SLAPD_DISCONNECT;
1104 goto operations_error;
1107 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
1108 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1109 "error: SASL bind in progress (tag=%ld).\n",
1111 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1112 "SASL bind in progress" );
1113 rc = LDAP_OPERATIONS_ERROR;
1114 goto operations_error;
1118 if (( conn->c_txn == CONN_TXN_SPECIFY ) && (
1119 ( tag == LDAP_REQ_ADD ) ||
1120 ( tag == LDAP_REQ_DELETE ) ||
1121 ( tag == LDAP_REQ_MODIFY ) ||
1122 ( tag == LDAP_REQ_MODRDN )))
1124 /* Disable SLAB allocator for all update operations
1125 issued inside of a transaction */
1126 op->o_tmpmemctx = NULL;
1127 op->o_tmpmfuncs = &ch_mfuncs;
1131 /* We can use Thread-Local storage for most mallocs. We can
1132 * also use TL for ber parsing, but not on Add or Modify.
1135 memsiz = ber_len( op->o_ber ) * 64;
1136 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
1138 memsiz = SLAP_SLAB_SIZE;
1140 memctx = slap_sl_mem_create( memsiz, SLAP_SLAB_STACK, ctx, 1 );
1141 op->o_tmpmemctx = memctx;
1142 op->o_tmpmfuncs = &slap_sl_mfuncs;
1143 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1144 /* Note - the ber and its buffer are already allocated from
1145 * regular memory; this only affects subsequent mallocs that
1146 * ber_scanf may invoke.
1148 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1152 opidx = slap_req2op( tag );
1153 assert( opidx != SLAP_OP_LAST );
1154 INCR_OP_INITIATED( opidx );
1155 rc = (*(opfun[opidx]))( op, &rs );
1158 if ( rc == SLAPD_DISCONNECT ) {
1161 } else if ( opidx != SLAP_OP_LAST ) {
1162 /* increment completed operations count
1163 * only if operation was initiated
1164 * and rc != SLAPD_DISCONNECT */
1165 INCR_OP_COMPLETED( opidx );
1168 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1170 if ( opidx == SLAP_OP_BIND && conn->c_conn_state == SLAP_C_BINDING )
1171 conn->c_conn_state = SLAP_C_ACTIVE;
1173 cancel = op->o_cancel;
1174 if ( cancel != SLAP_CANCEL_NONE && cancel != SLAP_CANCEL_DONE ) {
1175 if ( cancel == SLAP_CANCEL_REQ ) {
1176 op->o_cancel = rc == SLAPD_ABANDON
1177 ? SLAP_CANCEL_ACK : LDAP_TOO_LATE;
1181 /* Fake a cond_wait with thread_yield, then
1182 * verify the result properly mutex-protected.
1184 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1186 ldap_pvt_thread_yield();
1187 } while ( (cancel = op->o_cancel) != SLAP_CANCEL_NONE
1188 && cancel != SLAP_CANCEL_DONE );
1189 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1190 } while ( (cancel = op->o_cancel) != SLAP_CANCEL_NONE
1191 && cancel != SLAP_CANCEL_DONE );
1194 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1196 LDAP_STAILQ_REMOVE( &conn->c_ops, op, Operation, o_next);
1197 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1198 conn->c_n_ops_executing--;
1199 conn->c_n_ops_completed++;
1203 case LDAP_REQ_UNBIND:
1204 /* c_mutex is locked */
1205 connection_closing( conn,
1206 tag == LDAP_REQ_UNBIND ? NULL : "operations error" );
1210 connection_resched( conn );
1211 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1212 slap_op_free( op, ctx );
1216 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1218 Connection *connection_client_setup(
1220 ldap_pvt_thread_start_t *func,
1224 ber_socket_t sfd = SLAP_SOCKNEW( s );
1226 c = connection_init( sfd, (Listener *)&dummy_list, "", "",
1227 CONN_IS_CLIENT, 0, NULL
1228 LDAP_PF_LOCAL_SENDMSG_ARG(NULL));
1230 c->c_clientfunc = func;
1231 c->c_clientarg = arg;
1233 slapd_add_internal( sfd, 0 );
1238 void connection_client_enable(
1241 slapd_set_read( c->c_sd, 1 );
1244 void connection_client_stop(
1248 ber_socket_t s = c->c_sd;
1250 /* get (locked) connection */
1251 c = connection_get( s );
1253 assert( c->c_conn_state == SLAP_C_CLIENT );
1255 c->c_listener = NULL;
1256 c->c_conn_state = SLAP_C_INVALID;
1257 c->c_struct_state = SLAP_C_UNUSED;
1258 c->c_sd = AC_SOCKET_INVALID;
1259 c->c_close_reason = "?"; /* should never be needed */
1261 c->c_sb = ber_sockbuf_alloc( );
1263 ber_len_t max = sockbuf_max_incoming;
1264 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
1266 slapd_remove( s, sb, 0, 1, 0 );
1268 connection_return( c );
1271 static int connection_read( ber_socket_t s, conn_readinfo *cri );
1273 static void* connection_read_thread( void* ctx, void* argv )
1276 conn_readinfo cri = { NULL, NULL, NULL, NULL, 0 };
1277 ber_socket_t s = (long)argv;
1280 * read incoming LDAP requests. If there is more than one,
1281 * the first one is returned with new_op
1284 if( ( rc = connection_read( s, &cri ) ) < 0 ) {
1285 Debug( LDAP_DEBUG_CONNS, "connection_read(%d) error\n", s, 0, 0 );
1286 return (void*)(long)rc;
1289 /* execute a single queued request in the same thread */
1290 if( cri.op && !cri.nullop ) {
1291 rc = (long)connection_operation( ctx, cri.op );
1292 } else if ( cri.func ) {
1293 rc = (long)cri.func( ctx, cri.arg );
1296 return (void*)(long)rc;
1299 int connection_read_activate( ber_socket_t s )
1304 * suspend reading on this file descriptor until a connection processing
1305 * thread reads data on it. Otherwise the listener thread will repeatedly
1306 * submit the same event on it to the pool.
1308 rc = slapd_clr_read( s, 0 );
1312 /* Don't let blocked writers block a pause request */
1313 if ( connections[s].c_writewaiter &&
1314 ldap_pvt_thread_pool_pausing( &connection_pool ))
1315 connection_wake_writers( &connections[s] );
1317 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1318 connection_read_thread, (void *)(long)s );
1321 Debug( LDAP_DEBUG_ANY,
1322 "connection_read_activate(%d): submit failed (%d)\n",
1330 connection_read( ber_socket_t s, conn_readinfo *cri )
1335 assert( connections != NULL );
1337 /* get (locked) connection */
1338 c = connection_get( s );
1341 Debug( LDAP_DEBUG_ANY,
1342 "connection_read(%ld): no connection!\n",
1350 if( c->c_conn_state == SLAP_C_CLOSING ) {
1351 Debug( LDAP_DEBUG_CONNS,
1352 "connection_read(%d): closing, ignoring input for id=%lu\n",
1353 s, c->c_connid, 0 );
1354 connection_return( c );
1358 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1359 cri->func = c->c_clientfunc;
1360 cri->arg = c->c_clientarg;
1361 /* read should already be cleared */
1362 connection_return( c );
1366 Debug( LDAP_DEBUG_TRACE,
1367 "connection_read(%d): checking for input on id=%lu\n",
1368 s, c->c_connid, 0 );
1371 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1372 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1374 Debug( LDAP_DEBUG_TRACE,
1375 "connection_read(%d): TLS accept failure "
1376 "error=%d id=%lu, closing\n",
1377 s, rc, c->c_connid );
1379 c->c_needs_tls_accept = 0;
1380 /* c_mutex is locked */
1381 connection_closing( c, "TLS negotiation failure" );
1382 connection_close( c );
1383 connection_return( c );
1386 } else if ( rc == 0 ) {
1388 struct berval authid = BER_BVNULL;
1390 c->c_needs_tls_accept = 0;
1392 /* we need to let SASL know */
1393 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1395 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1396 if( c->c_tls_ssf > c->c_ssf ) {
1397 c->c_ssf = c->c_tls_ssf;
1400 rc = dnX509peerNormalize( ssl, &authid );
1401 if ( rc != LDAP_SUCCESS ) {
1402 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1403 "unable to get TLS client DN, error=%d id=%lu\n",
1404 s, rc, c->c_connid );
1406 Statslog( LDAP_DEBUG_STATS,
1407 "conn=%lu fd=%d TLS established tls_ssf=%u ssf=%u\n",
1408 c->c_connid, (int) s, c->c_tls_ssf, c->c_ssf, 0 );
1409 slap_sasl_external( c, c->c_tls_ssf, &authid );
1410 if ( authid.bv_val ) free( authid.bv_val );
1411 } else if ( rc == 1 && ber_sockbuf_ctrl( c->c_sb,
1412 LBER_SB_OPT_NEEDS_WRITE, NULL )) { /* need to retry */
1413 slapd_set_write( s, 1 );
1414 connection_return( c );
1418 /* if success and data is ready, fall thru to data input loop */
1419 if( !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1421 slapd_set_read( s, 1 );
1422 connection_return( c );
1428 #ifdef HAVE_CYRUS_SASL
1429 if ( c->c_sasl_layers ) {
1430 /* If previous layer is not removed yet, give up for now */
1431 if ( !c->c_sasl_sockctx ) {
1432 slapd_set_read( s, 1 );
1433 connection_return( c );
1437 c->c_sasl_layers = 0;
1439 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1440 if( rc != LDAP_SUCCESS ) {
1441 Debug( LDAP_DEBUG_TRACE,
1442 "connection_read(%d): SASL install error "
1443 "error=%d id=%lu, closing\n",
1444 s, rc, c->c_connid );
1446 /* c_mutex is locked */
1447 connection_closing( c, "SASL layer install failure" );
1448 connection_close( c );
1449 connection_return( c );
1455 #define CONNECTION_INPUT_LOOP 1
1456 /* #define DATA_READY_LOOP 1 */
1459 /* How do we do this without getting into a busy loop ? */
1460 rc = connection_input( c, cri );
1462 #ifdef DATA_READY_LOOP
1463 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1464 #elif defined CONNECTION_INPUT_LOOP
1471 Debug( LDAP_DEBUG_CONNS,
1472 "connection_read(%d): input error=%d id=%lu, closing.\n",
1473 s, rc, c->c_connid );
1475 /* c_mutex is locked */
1476 connection_closing( c, conn_lost_str );
1477 connection_close( c );
1478 connection_return( c );
1482 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1483 slapd_set_write( s, 0 );
1486 slapd_set_read( s, 1 );
1487 connection_return( c );
1493 connection_input( Connection *conn , conn_readinfo *cri )
1501 #ifdef LDAP_CONNECTIONLESS
1508 if ( conn->c_currentber == NULL &&
1509 ( conn->c_currentber = ber_alloc()) == NULL )
1511 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1517 #ifdef LDAP_CONNECTIONLESS
1518 if ( conn->c_is_udp ) {
1519 #if defined(LDAP_PF_INET6)
1520 char peername[sizeof("IP=[ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]:65535")];
1521 char addr[INET6_ADDRSTRLEN];
1523 char peername[sizeof("IP=255.255.255.255:65336")];
1524 char addr[INET_ADDRSTRLEN];
1526 const char *peeraddr_string = NULL;
1528 len = ber_int_sb_read(conn->c_sb, &peeraddr, sizeof(Sockaddr));
1529 if (len != sizeof(Sockaddr)) return 1;
1531 #if defined(LDAP_PF_INET6)
1532 if (peeraddr.sa_addr.sa_family == AF_INET6) {
1533 if ( IN6_IS_ADDR_V4MAPPED(&peeraddr.sa_in6_addr.sin6_addr) ) {
1534 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1535 peeraddr_string = inet_ntop( AF_INET,
1536 ((struct in_addr *)&peeraddr.sa_in6_addr.sin6_addr.s6_addr[12]),
1537 addr, sizeof(addr) );
1538 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1539 peeraddr_string = inet_ntoa( *((struct in_addr *)
1540 &peeraddr.sa_in6_addr.sin6_addr.s6_addr[12]) );
1541 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
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 ) );
1546 peeraddr_string = inet_ntop( AF_INET6,
1547 &peeraddr.sa_in6_addr.sin6_addr,
1548 addr, sizeof addr );
1549 if ( !peeraddr_string ) peeraddr_string = SLAP_STRING_UNKNOWN;
1550 sprintf( peername, "IP=[%s]:%d", peeraddr_string,
1551 (unsigned) ntohs( peeraddr.sa_in6_addr.sin6_port ) );
1555 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1557 peeraddr_string = inet_ntop( AF_INET, &peeraddr.sa_in_addr.sin_addr,
1558 addr, sizeof(addr) );
1559 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1560 peeraddr_string = inet_ntoa( peeraddr.sa_in_addr.sin_addr );
1561 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1562 sprintf( peername, "IP=%s:%d",
1564 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1566 Statslog( LDAP_DEBUG_STATS,
1567 "conn=%lu UDP request from %s (%s) accepted.\n",
1568 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1572 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1573 if ( tag != LDAP_TAG_MESSAGE ) {
1574 int err = sock_errno();
1576 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1577 /* log, close and send error */
1578 Debug( LDAP_DEBUG_TRACE,
1579 "ber_get_next on fd %d failed errno=%d (%s)\n",
1580 conn->c_sd, err, sock_errstr(err) );
1581 ber_free( conn->c_currentber, 1 );
1582 conn->c_currentber = NULL;
1589 ber = conn->c_currentber;
1590 conn->c_currentber = NULL;
1592 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1593 /* log, close and send error */
1594 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0, 0 );
1599 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1600 /* log, close and send error */
1601 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0, 0 );
1607 #ifdef LDAP_CONNECTIONLESS
1608 if( conn->c_is_udp ) {
1609 if( tag == LBER_OCTETSTRING ) {
1610 if ( (tag = ber_get_stringa( ber, &cdn )) != LBER_ERROR )
1611 tag = ber_peek_tag( ber, &len );
1613 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1614 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1621 if(tag == LDAP_REQ_BIND) {
1622 /* immediately abandon all existing operations upon BIND */
1623 connection_abandon( conn );
1627 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++, ctx );
1629 Debug( LDAP_DEBUG_TRACE, "op tag 0x%lx, time %ld\n", tag,
1630 (long) op->o_time, 0);
1633 /* clear state if the connection is being reused from inactive */
1634 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1635 memset( &conn->c_pagedresults_state, 0,
1636 sizeof( conn->c_pagedresults_state ) );
1639 op->o_res_ber = NULL;
1641 #ifdef LDAP_CONNECTIONLESS
1642 if (conn->c_is_udp) {
1644 ber_str2bv( cdn, 0, 1, &op->o_dn );
1645 op->o_protocol = LDAP_VERSION2;
1647 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1648 if (op->o_res_ber == NULL) return 1;
1650 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1651 sizeof(struct sockaddr), 0 );
1653 if (rc != sizeof(struct sockaddr)) {
1654 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1658 if (op->o_protocol == LDAP_VERSION2) {
1659 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1661 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1666 #endif /* LDAP_CONNECTIONLESS */
1670 /* Don't process requests when the conn is in the middle of a
1671 * Bind, or if it's closing. Also, don't let any single conn
1672 * use up all the available threads, and don't execute if we're
1673 * currently blocked on output. And don't execute if there are
1674 * already pending ops, let them go first. Abandon operations
1675 * get exceptions to some, but not all, cases.
1679 /* Abandon and Unbind are exempt from these checks */
1680 if (conn->c_conn_state == SLAP_C_CLOSING) {
1683 } else if (conn->c_writewaiter) {
1684 defer = "awaiting write";
1686 } else if (conn->c_n_ops_pending) {
1687 defer = "pending operations";
1691 case LDAP_REQ_ABANDON:
1692 /* Unbind is exempt from these checks */
1693 if (conn->c_n_ops_executing >= connection_pool_max/2) {
1694 defer = "too many executing";
1696 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1701 case LDAP_REQ_UNBIND:
1706 int max = conn->c_dn.bv_len
1707 ? slap_conn_max_pending_auth
1708 : slap_conn_max_pending;
1710 Debug( LDAP_DEBUG_ANY,
1711 "connection_input: conn=%lu deferring operation: %s\n",
1712 conn->c_connid, defer, 0 );
1713 conn->c_n_ops_pending++;
1714 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1715 rc = ( conn->c_n_ops_pending > max ) ? -1 : 0;
1718 conn->c_n_ops_executing++;
1721 * The first op will be processed in the same thread context,
1722 * as long as there is only one op total.
1723 * Subsequent ops will be submitted to the pool by
1724 * calling connection_op_activate()
1726 if ( cri->op == NULL ) {
1727 /* the first incoming request */
1728 connection_op_queue( op );
1731 if ( !cri->nullop ) {
1733 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1734 connection_operation, (void *) cri->op );
1736 connection_op_activate( op );
1741 if ( conn->c_struct_state != SLAP_C_USED ) {
1742 /* connection must have got closed underneath us */
1747 assert( conn->c_struct_state == SLAP_C_USED );
1752 connection_resched( Connection *conn )
1756 if( conn->c_writewaiter )
1759 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1760 Debug( LDAP_DEBUG_CONNS, "connection_resched: "
1761 "attempting closing conn=%lu sd=%d\n",
1762 conn->c_connid, conn->c_sd, 0 );
1763 connection_close( conn );
1767 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1768 /* other states need different handling */
1772 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1773 if ( conn->c_n_ops_executing > connection_pool_max/2 ) break;
1775 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1776 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1778 /* pending operations should not be marked for abandonment */
1779 assert(!op->o_abandon);
1781 conn->c_n_ops_pending--;
1782 conn->c_n_ops_executing++;
1784 connection_op_activate( op );
1786 if ( conn->c_conn_state == SLAP_C_BINDING ) break;
1792 connection_init_log_prefix( Operation *op )
1794 if ( op->o_connid == (unsigned long)(-1) ) {
1795 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1796 "conn=-1 op=%lu", op->o_opid );
1799 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1800 "conn=%lu op=%lu", op->o_connid, op->o_opid );
1804 static int connection_bind_cleanup_cb( Operation *op, SlapReply *rs )
1806 op->o_conn->c_sasl_bindop = NULL;
1808 ch_free( op->o_callback );
1809 op->o_callback = NULL;
1811 return SLAP_CB_CONTINUE;
1814 static int connection_bind_cb( Operation *op, SlapReply *rs )
1816 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1817 op->o_conn->c_sasl_bind_in_progress =
1818 ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS );
1820 /* Moved here from bind.c due to ITS#4158 */
1821 op->o_conn->c_sasl_bindop = NULL;
1822 if ( op->orb_method == LDAP_AUTH_SASL ) {
1823 if( rs->sr_err == LDAP_SUCCESS ) {
1824 ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
1825 if( !BER_BVISEMPTY( &op->orb_edn ) ) {
1826 /* edn is always normalized already */
1827 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
1829 op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
1830 BER_BVZERO( &op->orb_edn );
1831 op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
1832 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1834 op->o_conn->c_sasl_ssf = op->orb_ssf;
1835 if( op->orb_ssf > op->o_conn->c_ssf ) {
1836 op->o_conn->c_ssf = op->orb_ssf;
1839 if( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
1840 ber_len_t max = sockbuf_max_incoming_auth;
1841 ber_sockbuf_ctrl( op->o_conn->c_sb,
1842 LBER_SB_OPT_SET_MAX_INCOMING, &max );
1845 /* log authorization identity */
1846 Statslog( LDAP_DEBUG_STATS,
1847 "%s BIND dn=\"%s\" mech=%s sasl_ssf=%d ssf=%d\n",
1849 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1850 op->o_conn->c_authmech.bv_val,
1851 op->orb_ssf, op->o_conn->c_ssf );
1853 Debug( LDAP_DEBUG_TRACE,
1854 "do_bind: SASL/%s bind: dn=\"%s\" sasl_ssf=%d\n",
1855 op->o_conn->c_authmech.bv_val,
1856 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1859 } else if ( rs->sr_err != LDAP_SASL_BIND_IN_PROGRESS ) {
1860 if ( !BER_BVISNULL( &op->o_conn->c_sasl_bind_mech ) ) {
1861 free( op->o_conn->c_sasl_bind_mech.bv_val );
1862 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1866 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1868 ch_free( op->o_callback );
1869 op->o_callback = NULL;
1871 return SLAP_CB_CONTINUE;
1874 static void connection_op_queue( Operation *op )
1876 ber_tag_t tag = op->o_tag;
1878 if (tag == LDAP_REQ_BIND) {
1879 slap_callback *sc = ch_calloc( 1, sizeof( slap_callback ));
1880 sc->sc_response = connection_bind_cb;
1881 sc->sc_cleanup = connection_bind_cleanup_cb;
1882 sc->sc_next = op->o_callback;
1883 op->o_callback = sc;
1884 op->o_conn->c_conn_state = SLAP_C_BINDING;
1887 if (!op->o_dn.bv_len) {
1888 op->o_authz = op->o_conn->c_authz;
1889 if ( BER_BVISNULL( &op->o_conn->c_sasl_authz_dn )) {
1890 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1891 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1893 ber_dupbv( &op->o_dn, &op->o_conn->c_sasl_authz_dn );
1894 ber_dupbv( &op->o_ndn, &op->o_conn->c_sasl_authz_dn );
1898 op->o_authtype = op->o_conn->c_authtype;
1899 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1901 if (!op->o_protocol) {
1902 op->o_protocol = op->o_conn->c_protocol
1903 ? op->o_conn->c_protocol : LDAP_VERSION3;
1906 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE &&
1907 op->o_protocol > LDAP_VERSION2)
1909 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1912 op->o_connid = op->o_conn->c_connid;
1913 connection_init_log_prefix( op );
1915 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1918 static int connection_op_activate( Operation *op )
1922 connection_op_queue( op );
1924 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1925 connection_operation, (void *) op );
1928 Debug( LDAP_DEBUG_ANY,
1929 "connection_op_activate: submit failed (%d) for conn=%lu\n",
1930 rc, op->o_connid, 0 );
1931 /* should move op to pending list */
1937 int connection_write(ber_socket_t s)
1942 assert( connections != NULL );
1944 c = connection_get( s );
1946 Debug( LDAP_DEBUG_ANY,
1947 "connection_write(%ld): no connection!\n",
1952 slapd_clr_write( s, 0 );
1955 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1956 connection_return( c );
1957 connection_read_activate( s );
1964 Debug( LDAP_DEBUG_TRACE,
1965 "connection_write(%d): waking output for id=%lu\n",
1966 s, c->c_connid, 0 );
1967 ldap_pvt_thread_mutex_lock( &c->c_write2_mutex );
1968 ldap_pvt_thread_cond_signal( &c->c_write2_cv );
1969 ldap_pvt_thread_mutex_unlock( &c->c_write2_mutex );
1971 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1972 slapd_set_read( s, 1 );
1974 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1975 slapd_set_write( s, 1 );
1978 /* If there are ops pending because of a writewaiter,
1981 while ((op = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
1982 if ( !c->c_writewaiter ) break;
1983 if ( c->c_n_ops_executing > connection_pool_max/2 ) break;
1985 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
1986 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1988 /* pending operations should not be marked for abandonment */
1989 assert(!op->o_abandon);
1991 c->c_n_ops_pending--;
1992 c->c_n_ops_executing++;
1994 connection_op_activate( op );
1999 connection_return( c );
2004 typedef struct conn_fake_extblock {
2007 } conn_fake_extblock;
2010 connection_fake_destroy(
2014 Connection conn = {0};
2016 Opheader ohdr = {0};
2018 conn_fake_extblock *eb = data;
2021 op.o_hdr->oh_extensions = eb->eb_op;
2022 conn.c_extensions = eb->eb_conn;
2027 ber_memfree_x( eb, NULL );
2028 slapi_int_free_object_extensions( SLAPI_X_EXT_OPERATION, &op );
2029 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION, &conn );
2034 connection_fake_init(
2036 OperationBuffer *opbuf,
2039 connection_fake_init2( conn, opbuf, ctx, 1 );
2043 operation_fake_init(
2049 /* set memory context */
2050 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx,
2052 op->o_tmpmfuncs = &slap_sl_mfuncs;
2053 op->o_threadctx = ctx;
2054 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
2056 op->o_counters = &slap_counters;
2058 op->o_connid = op->o_conn->c_connid;
2059 connection_init_log_prefix( op );
2064 connection_fake_init2(
2066 OperationBuffer *opbuf,
2070 Operation *op = (Operation *) opbuf;
2072 conn->c_connid = -1;
2073 conn->c_conn_idx = -1;
2074 conn->c_send_ldap_result = slap_send_ldap_result;
2075 conn->c_send_search_entry = slap_send_search_entry;
2076 conn->c_send_search_reference = slap_send_search_reference;
2077 conn->c_send_ldap_extended = slap_send_ldap_extended;
2078 conn->c_send_ldap_intermediate = slap_send_ldap_intermediate;
2079 conn->c_listener = (Listener *)&dummy_list;
2080 conn->c_peer_domain = slap_empty_bv;
2081 conn->c_peer_name = slap_empty_bv;
2083 memset( opbuf, 0, sizeof( *opbuf ));
2084 op->o_hdr = &opbuf->ob_hdr;
2085 op->o_controls = opbuf->ob_controls;
2087 operation_fake_init( conn, op, ctx, newmem );
2090 if ( slapi_plugins_used ) {
2091 conn_fake_extblock *eb;
2094 /* Use thread keys to make sure these eventually get cleaned up */
2095 if ( ldap_pvt_thread_pool_getkey( ctx, (void *)connection_fake_init,
2097 eb = ch_malloc( sizeof( *eb ));
2098 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, conn );
2099 slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
2100 eb->eb_conn = conn->c_extensions;
2101 eb->eb_op = op->o_hdr->oh_extensions;
2102 ldap_pvt_thread_pool_setkey( ctx, (void *)connection_fake_init,
2103 eb, connection_fake_destroy, NULL, NULL );
2106 conn->c_extensions = eb->eb_conn;
2107 op->o_hdr->oh_extensions = eb->eb_op;
2110 #endif /* LDAP_SLAPI */
2112 slap_op_time( &op->o_time, &op->o_tincr );
2116 connection_assign_nextid( Connection *conn )
2118 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
2119 conn->c_connid = conn_nextid++;
2120 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );