2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2011 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;
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 ) {
228 connection_done( c );
232 if( global_idletimeout &&
233 difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
235 connection_closing( c, "idletimeout" );
236 connection_close( c );
240 if ( c->c_writewaiter && global_writetimeout ) {
242 if( difftime( c->c_activitytime+global_writetimeout, now) < 0 ) {
244 connection_closing( c, "writetimeout" );
245 connection_close( c );
250 connection_done( c );
252 if ( old && !writers )
253 slapd_clr_writetime( old );
258 /* Drop all client connections */
259 void connections_drop()
264 for( c = connection_first( &connindex );
266 c = connection_next( c, &connindex ) )
268 /* Don't close a slow-running request or a persistent
269 * outbound connection.
271 if(( c->c_n_ops_executing && !c->c_writewaiter)
272 || c->c_conn_state == SLAP_C_CLIENT ) {
273 connection_done( c );
276 connection_closing( c, "dropping" );
277 connection_close( c );
281 static Connection* connection_get( ber_socket_t s )
285 Debug( LDAP_DEBUG_ARGS,
286 "connection_get(%ld)\n",
289 assert( connections != NULL );
291 if(s == AC_SOCKET_INVALID) return NULL;
293 assert( s < dtblsize );
297 ldap_pvt_thread_mutex_lock( &c->c_mutex );
299 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
301 if( c->c_struct_state != SLAP_C_USED ) {
302 /* connection must have been closed due to resched */
304 Debug( LDAP_DEBUG_CONNS,
305 "connection_get(%d): connection not used\n",
307 assert( c->c_conn_state == SLAP_C_INVALID );
308 assert( c->c_sd == AC_SOCKET_INVALID );
310 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
314 Debug( LDAP_DEBUG_TRACE,
315 "connection_get(%d): got connid=%lu\n",
320 assert( c->c_struct_state == SLAP_C_USED );
321 assert( c->c_conn_state != SLAP_C_INVALID );
322 assert( c->c_sd != AC_SOCKET_INVALID );
324 #ifndef SLAPD_MONITOR
325 if ( global_idletimeout > 0 )
326 #endif /* ! SLAPD_MONITOR */
328 c->c_activitytime = slap_get_time();
335 static void connection_return( Connection *c )
337 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
340 Connection * connection_init(
344 const char* peername,
347 struct berval *authid
348 LDAP_PF_LOCAL_SENDMSG_ARG(struct berval *peerbv))
353 ber_socket_t sfd = SLAP_FD2SOCK(s);
355 assert( connections != NULL );
357 assert( listener != NULL );
358 assert( dnsname != NULL );
359 assert( peername != NULL );
362 assert( !( flags & CONN_IS_TLS ));
365 if( s == AC_SOCKET_INVALID ) {
366 Debug( LDAP_DEBUG_ANY,
367 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
372 assert( s < dtblsize );
374 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
377 assert( c->c_struct_state == SLAP_C_UNUSED );
381 c->c_send_ldap_result = slap_send_ldap_result;
382 c->c_send_search_entry = slap_send_search_entry;
383 c->c_send_search_reference = slap_send_search_reference;
384 c->c_send_ldap_extended = slap_send_ldap_extended;
385 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
387 BER_BVZERO( &c->c_authmech );
388 BER_BVZERO( &c->c_dn );
389 BER_BVZERO( &c->c_ndn );
391 c->c_listener = NULL;
392 BER_BVZERO( &c->c_peer_domain );
393 BER_BVZERO( &c->c_peer_name );
395 LDAP_STAILQ_INIT(&c->c_ops);
396 LDAP_STAILQ_INIT(&c->c_pending_ops);
399 c->c_txn = CONN_TXN_INACTIVE;
400 c->c_txn_backend = NULL;
401 LDAP_STAILQ_INIT(&c->c_txn_ops);
404 BER_BVZERO( &c->c_sasl_bind_mech );
406 c->c_sasl_authctx = NULL;
407 c->c_sasl_sockctx = NULL;
408 c->c_sasl_extra = NULL;
409 c->c_sasl_bindop = NULL;
411 c->c_sb = ber_sockbuf_alloc( );
414 ber_len_t max = sockbuf_max_incoming;
415 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
418 c->c_currentber = NULL;
420 /* should check status of thread calls */
421 ldap_pvt_thread_mutex_init( &c->c_mutex );
422 ldap_pvt_thread_mutex_init( &c->c_write1_mutex );
423 ldap_pvt_thread_mutex_init( &c->c_write2_mutex );
424 ldap_pvt_thread_cond_init( &c->c_write1_cv );
425 ldap_pvt_thread_cond_init( &c->c_write2_cv );
428 if ( slapi_plugins_used ) {
429 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
434 ldap_pvt_thread_mutex_lock( &c->c_mutex );
436 assert( BER_BVISNULL( &c->c_authmech ) );
437 assert( BER_BVISNULL( &c->c_dn ) );
438 assert( BER_BVISNULL( &c->c_ndn ) );
439 assert( c->c_listener == NULL );
440 assert( BER_BVISNULL( &c->c_peer_domain ) );
441 assert( BER_BVISNULL( &c->c_peer_name ) );
442 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
443 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
445 assert( c->c_txn == CONN_TXN_INACTIVE );
446 assert( c->c_txn_backend == NULL );
447 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
449 assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
450 assert( c->c_sasl_done == 0 );
451 assert( c->c_sasl_authctx == NULL );
452 assert( c->c_sasl_sockctx == NULL );
453 assert( c->c_sasl_extra == NULL );
454 assert( c->c_sasl_bindop == NULL );
455 assert( c->c_currentber == NULL );
456 assert( c->c_writewaiter == 0);
457 assert( c->c_writers == 0);
459 c->c_listener = listener;
462 if ( flags & CONN_IS_CLIENT ) {
464 ldap_pvt_thread_mutex_lock( &connections_mutex );
465 c->c_conn_state = SLAP_C_CLIENT;
466 c->c_struct_state = SLAP_C_USED;
467 ldap_pvt_thread_mutex_unlock( &connections_mutex );
468 c->c_close_reason = "?"; /* should never be needed */
469 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &sfd );
470 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
475 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
476 ber_str2bv( peername, 0, 1, &c->c_peer_name );
478 c->c_n_ops_received = 0;
479 c->c_n_ops_executing = 0;
480 c->c_n_ops_pending = 0;
481 c->c_n_ops_completed = 0;
487 /* set to zero until bind, implies LDAP_VERSION3 */
490 #ifndef SLAPD_MONITOR
491 if ( global_idletimeout > 0 )
492 #endif /* ! SLAPD_MONITOR */
494 c->c_activitytime = c->c_starttime = slap_get_time();
497 #ifdef LDAP_CONNECTIONLESS
499 if( flags & CONN_IS_UDP ) {
502 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
503 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
505 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
506 LBER_SBIOD_LEVEL_PROVIDER, (void *)&sfd );
507 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
508 LBER_SBIOD_LEVEL_PROVIDER, NULL );
510 #endif /* LDAP_CONNECTIONLESS */
512 if ( flags & CONN_IS_IPC ) {
514 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
515 LBER_SBIOD_LEVEL_PROVIDER, (void*)"ipc_" );
517 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_fd,
518 LBER_SBIOD_LEVEL_PROVIDER, (void *)&sfd );
519 #ifdef LDAP_PF_LOCAL_SENDMSG
520 if ( !BER_BVISEMPTY( peerbv ))
521 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_UNGET_BUF, peerbv );
524 #endif /* LDAP_PF_LOCAL */
527 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
528 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
530 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
531 LBER_SBIOD_LEVEL_PROVIDER, (void *)&sfd );
535 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
536 INT_MAX, (void*)"ldap_" );
539 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
540 c /* non-NULL */ ) < 0 )
542 Debug( LDAP_DEBUG_ANY,
543 "connection_init(%d, %s): set nonblocking failed\n",
544 s, c->c_peer_name.bv_val, 0 );
547 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
548 id = c->c_connid = conn_nextid++;
549 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
551 ldap_pvt_thread_mutex_lock( &connections_mutex );
552 c->c_conn_state = SLAP_C_INACTIVE;
553 c->c_struct_state = SLAP_C_USED;
554 ldap_pvt_thread_mutex_unlock( &connections_mutex );
555 c->c_close_reason = "?"; /* should never be needed */
557 c->c_ssf = c->c_transport_ssf = ssf;
561 if ( flags & CONN_IS_TLS ) {
563 c->c_needs_tls_accept = 1;
566 c->c_needs_tls_accept = 0;
570 slap_sasl_open( c, 0 );
571 slap_sasl_external( c, ssf, authid );
573 slapd_add_internal( s, 1 );
575 backend_connection_init(c);
576 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
581 void connection2anonymous( Connection *c )
583 assert( connections != NULL );
587 ber_len_t max = sockbuf_max_incoming;
588 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
591 if ( !BER_BVISNULL( &c->c_authmech ) ) {
592 ch_free(c->c_authmech.bv_val);
594 BER_BVZERO( &c->c_authmech );
596 if ( !BER_BVISNULL( &c->c_dn ) ) {
597 ch_free(c->c_dn.bv_val);
599 BER_BVZERO( &c->c_dn );
601 if ( !BER_BVISNULL( &c->c_ndn ) ) {
602 ch_free(c->c_ndn.bv_val);
604 BER_BVZERO( &c->c_ndn );
606 if ( !BER_BVISNULL( &c->c_sasl_authz_dn ) ) {
607 ber_memfree_x( c->c_sasl_authz_dn.bv_val, NULL );
609 BER_BVZERO( &c->c_sasl_authz_dn );
611 c->c_authz_backend = NULL;
615 connection_destroy( Connection *c )
617 unsigned long connid;
618 const char *close_reason;
622 assert( connections != NULL );
624 assert( c->c_struct_state != SLAP_C_UNUSED );
625 assert( c->c_conn_state != SLAP_C_INVALID );
626 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
627 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
629 assert( c->c_txn == CONN_TXN_INACTIVE );
630 assert( c->c_txn_backend == NULL );
631 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
633 assert( c->c_writewaiter == 0);
634 assert( c->c_writers == 0);
636 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
637 connid = c->c_connid;
638 close_reason = c->c_close_reason;
640 ldap_pvt_thread_mutex_lock( &connections_mutex );
641 c->c_struct_state = SLAP_C_PENDING;
642 ldap_pvt_thread_mutex_unlock( &connections_mutex );
644 backend_connection_destroy(c);
649 c->c_activitytime = c->c_starttime = 0;
651 connection2anonymous( c );
652 c->c_listener = NULL;
654 if(c->c_peer_domain.bv_val != NULL) {
655 free(c->c_peer_domain.bv_val);
657 BER_BVZERO( &c->c_peer_domain );
658 if(c->c_peer_name.bv_val != NULL) {
659 free(c->c_peer_name.bv_val);
661 BER_BVZERO( &c->c_peer_name );
663 c->c_sasl_bind_in_progress = 0;
664 if(c->c_sasl_bind_mech.bv_val != NULL) {
665 free(c->c_sasl_bind_mech.bv_val);
667 BER_BVZERO( &c->c_sasl_bind_mech );
669 slap_sasl_close( c );
671 if ( c->c_currentber != NULL ) {
672 ber_free( c->c_currentber, 1 );
673 c->c_currentber = NULL;
678 /* call destructors, then constructors; avoids unnecessary allocation */
679 if ( slapi_plugins_used ) {
680 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
685 c->c_sd = AC_SOCKET_INVALID;
686 c->c_conn_state = SLAP_C_INVALID;
687 c->c_struct_state = SLAP_C_UNUSED;
688 c->c_close_reason = "?"; /* should never be needed */
691 c->c_sb = ber_sockbuf_alloc( );
693 ber_len_t max = sockbuf_max_incoming;
694 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
697 /* c must be fully reset by this point; when we call slapd_remove
698 * it may get immediately reused by a new connection.
700 if ( sd != AC_SOCKET_INVALID ) {
701 slapd_remove( sd, sb, 1, 0, 0 );
703 if ( close_reason == NULL ) {
704 Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed\n",
705 connid, (long) sd, 0, 0, 0 );
707 Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed (%s)\n",
708 connid, (long) sd, close_reason, 0, 0 );
713 int connection_valid( Connection *c )
715 /* c_mutex must be locked by caller */
719 return c->c_struct_state == SLAP_C_USED &&
720 c->c_conn_state >= SLAP_C_ACTIVE &&
721 c->c_conn_state <= SLAP_C_CLIENT;
724 static void connection_abandon( Connection *c )
726 /* c_mutex must be locked by caller */
728 Operation *o, *next, op = {0};
733 op.o_connid = c->c_connid;
734 op.o_tag = LDAP_REQ_ABANDON;
736 for ( o = LDAP_STAILQ_FIRST( &c->c_ops ); o; o=next ) {
737 SlapReply rs = {REP_RESULT};
739 next = LDAP_STAILQ_NEXT( o, o_next );
740 op.orn_msgid = o->o_msgid;
742 op.o_bd = frontendDB;
743 frontendDB->be_abandon( &op, &rs );
747 /* remove operations in pending transaction */
748 while ( (o = LDAP_STAILQ_FIRST( &c->c_txn_ops )) != NULL) {
749 LDAP_STAILQ_REMOVE_HEAD( &c->c_txn_ops, o_next );
750 LDAP_STAILQ_NEXT(o, o_next) = NULL;
751 slap_op_free( o, NULL );
754 /* clear transaction */
755 c->c_txn_backend = NULL;
756 c->c_txn = CONN_TXN_INACTIVE;
759 /* remove pending operations */
760 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
761 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
762 LDAP_STAILQ_NEXT(o, o_next) = NULL;
763 slap_op_free( o, NULL );
768 connection_wake_writers( Connection *c )
770 /* wake write blocked operations */
771 ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
772 if ( c->c_writers > 0 ) {
773 c->c_writers = -c->c_writers;
774 ldap_pvt_thread_cond_broadcast( &c->c_write1_cv );
775 ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
776 if ( c->c_writewaiter ) {
777 ldap_pvt_thread_mutex_lock( &c->c_write2_mutex );
778 ldap_pvt_thread_cond_signal( &c->c_write2_cv );
779 slapd_clr_write( c->c_sd, 1 );
780 ldap_pvt_thread_mutex_unlock( &c->c_write2_mutex );
782 ldap_pvt_thread_mutex_lock( &c->c_write1_mutex );
783 while ( c->c_writers ) {
784 ldap_pvt_thread_cond_wait( &c->c_write1_cv, &c->c_write1_mutex );
786 ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
788 ldap_pvt_thread_mutex_unlock( &c->c_write1_mutex );
789 slapd_clr_write( c->c_sd, 1 );
793 void connection_closing( Connection *c, const char *why )
795 assert( connections != NULL );
798 if ( c->c_struct_state != SLAP_C_USED ) return;
800 assert( c->c_conn_state != SLAP_C_INVALID );
802 /* c_mutex must be locked by caller */
804 if( c->c_conn_state != SLAP_C_CLOSING ) {
805 Debug( LDAP_DEBUG_CONNS,
806 "connection_closing: readying conn=%lu sd=%d for close\n",
807 c->c_connid, c->c_sd, 0 );
808 /* update state to closing */
809 c->c_conn_state = SLAP_C_CLOSING;
810 c->c_close_reason = why;
812 /* don't listen on this port anymore */
813 slapd_clr_read( c->c_sd, 0 );
815 /* abandon active operations */
816 connection_abandon( c );
818 /* wake write blocked operations */
819 connection_wake_writers( c );
821 } else if( why == NULL && c->c_close_reason == conn_lost_str ) {
822 /* Client closed connection after doing Unbind. */
823 c->c_close_reason = NULL;
828 connection_close( Connection *c )
830 assert( connections != NULL );
833 if ( c->c_struct_state != SLAP_C_USED ) return;
835 assert( c->c_conn_state == SLAP_C_CLOSING );
837 /* NOTE: c_mutex should be locked by caller */
839 if ( !LDAP_STAILQ_EMPTY(&c->c_ops) ||
840 !LDAP_STAILQ_EMPTY(&c->c_pending_ops) )
842 Debug( LDAP_DEBUG_CONNS,
843 "connection_close: deferring conn=%lu sd=%d\n",
844 c->c_connid, c->c_sd, 0 );
848 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
849 c->c_connid, c->c_sd, 0 );
851 connection_destroy( c );
854 unsigned long connections_nextid(void)
857 assert( connections != NULL );
859 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
863 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
868 Connection* connection_first( ber_socket_t *index )
870 assert( connections != NULL );
871 assert( index != NULL );
873 ldap_pvt_thread_mutex_lock( &connections_mutex );
874 for( *index = 0; *index < dtblsize; (*index)++) {
875 if( connections[*index].c_struct_state != SLAP_C_UNINITIALIZED ) {
879 ldap_pvt_thread_mutex_unlock( &connections_mutex );
881 return connection_next(NULL, index);
884 Connection* connection_next( Connection *c, ber_socket_t *index )
886 assert( connections != NULL );
887 assert( index != NULL );
888 assert( *index <= dtblsize );
890 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
894 ldap_pvt_thread_mutex_lock( &connections_mutex );
895 for(; *index < dtblsize; (*index)++) {
897 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
898 /* FIXME: accessing c_conn_state without locking c_mutex */
899 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
903 if( connections[*index].c_struct_state == SLAP_C_USED ) {
904 c = &connections[(*index)++];
905 if ( ldap_pvt_thread_mutex_trylock( &c->c_mutex )) {
907 ldap_pvt_thread_mutex_unlock( &connections_mutex );
908 ldap_pvt_thread_mutex_lock( &c->c_mutex );
909 ldap_pvt_thread_mutex_lock( &connections_mutex );
910 if ( c->c_struct_state != SLAP_C_USED ) {
911 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
916 assert( c->c_conn_state != SLAP_C_INVALID );
920 c_struct = connections[*index].c_struct_state;
921 if ( c_struct == SLAP_C_PENDING )
923 assert( c_struct == SLAP_C_UNUSED );
924 /* FIXME: accessing c_conn_state without locking c_mutex */
925 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
928 ldap_pvt_thread_mutex_unlock( &connections_mutex );
932 void connection_done( Connection *c )
934 assert( connections != NULL );
936 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
940 * connection_activity - handle the request operation op on connection
941 * conn. This routine figures out what kind of operation it is and
942 * calls the appropriate stub to handle it.
946 /* FIXME: returns 0 in case of failure */
947 #define INCR_OP_INITIATED(index) \
949 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); \
950 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_initiated_[(index)], 1); \
951 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); \
953 #define INCR_OP_COMPLETED(index) \
955 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); \
956 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_completed, 1); \
957 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_completed_[(index)], 1); \
958 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); \
960 #else /* !SLAPD_MONITOR */
961 #define INCR_OP_INITIATED(index) do { } while (0)
962 #define INCR_OP_COMPLETED(index) \
964 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex ); \
965 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_completed, 1); \
966 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex ); \
968 #endif /* !SLAPD_MONITOR */
971 * NOTE: keep in sync with enum in slapd.h
973 static BI_op_func *opfun[] = {
987 /* Counters are per-thread, not per-connection.
990 conn_counter_destroy( void *key, void *data )
992 slap_counters_t **prev, *sc;
994 ldap_pvt_thread_mutex_lock( &slap_counters.sc_mutex );
995 for ( prev = &slap_counters.sc_next, sc = slap_counters.sc_next; sc;
996 prev = &sc->sc_next, sc = sc->sc_next ) {
1000 *prev = sc->sc_next;
1001 /* Copy data to main counter */
1002 ldap_pvt_mp_add( slap_counters.sc_bytes, sc->sc_bytes );
1003 ldap_pvt_mp_add( slap_counters.sc_pdu, sc->sc_pdu );
1004 ldap_pvt_mp_add( slap_counters.sc_entries, sc->sc_entries );
1005 ldap_pvt_mp_add( slap_counters.sc_refs, sc->sc_refs );
1006 ldap_pvt_mp_add( slap_counters.sc_ops_initiated, sc->sc_ops_initiated );
1007 ldap_pvt_mp_add( slap_counters.sc_ops_completed, sc->sc_ops_completed );
1008 #ifdef SLAPD_MONITOR
1009 for ( i = 0; i < SLAP_OP_LAST; i++ ) {
1010 ldap_pvt_mp_add( slap_counters.sc_ops_initiated_[ i ], sc->sc_ops_initiated_[ i ] );
1011 ldap_pvt_mp_add( slap_counters.sc_ops_initiated_[ i ], sc->sc_ops_completed_[ i ] );
1013 #endif /* SLAPD_MONITOR */
1014 slap_counters_destroy( sc );
1015 ber_memfree_x( data, NULL );
1019 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_mutex );
1023 conn_counter_init( Operation *op, void *ctx )
1025 slap_counters_t *sc;
1028 if ( ldap_pvt_thread_pool_getkey(
1029 ctx, (void *)conn_counter_init, &vsc, NULL ) || !vsc ) {
1030 vsc = ch_malloc( sizeof( slap_counters_t ));
1032 slap_counters_init( sc );
1033 ldap_pvt_thread_pool_setkey( ctx, (void*)conn_counter_init, vsc,
1034 conn_counter_destroy, NULL, NULL );
1036 ldap_pvt_thread_mutex_lock( &slap_counters.sc_mutex );
1037 sc->sc_next = slap_counters.sc_next;
1038 slap_counters.sc_next = sc;
1039 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_mutex );
1041 op->o_counters = vsc;
1045 connection_operation( void *ctx, void *arg_v )
1047 int rc = LDAP_OTHER, cancel;
1048 Operation *op = arg_v;
1049 SlapReply rs = {REP_RESULT};
1050 ber_tag_t tag = op->o_tag;
1051 slap_op_t opidx = SLAP_OP_LAST;
1052 Connection *conn = op->o_conn;
1053 void *memctx = NULL;
1054 void *memctx_null = NULL;
1057 conn_counter_init( op, ctx );
1058 ldap_pvt_thread_mutex_lock( &op->o_counters->sc_mutex );
1059 /* FIXME: returns 0 in case of failure */
1060 ldap_pvt_mp_add_ulong(op->o_counters->sc_ops_initiated, 1);
1061 ldap_pvt_thread_mutex_unlock( &op->o_counters->sc_mutex );
1063 op->o_threadctx = ctx;
1064 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
1068 case LDAP_REQ_UNBIND:
1070 case LDAP_REQ_DELETE:
1071 case LDAP_REQ_MODDN:
1072 case LDAP_REQ_MODIFY:
1073 case LDAP_REQ_COMPARE:
1074 case LDAP_REQ_SEARCH:
1075 case LDAP_REQ_ABANDON:
1076 case LDAP_REQ_EXTENDED:
1079 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1080 "conn %lu unknown LDAP request 0x%lx\n",
1081 conn->c_connid, tag, 0 );
1082 op->o_tag = LBER_ERROR;
1083 rs.sr_err = LDAP_PROTOCOL_ERROR;
1084 rs.sr_text = "unknown LDAP request";
1085 send_ldap_disconnect( op, &rs );
1086 rc = SLAPD_DISCONNECT;
1087 goto operations_error;
1090 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
1091 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1092 "error: SASL bind in progress (tag=%ld).\n",
1094 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1095 "SASL bind in progress" );
1096 rc = LDAP_OPERATIONS_ERROR;
1097 goto operations_error;
1101 if (( conn->c_txn == CONN_TXN_SPECIFY ) && (
1102 ( tag == LDAP_REQ_ADD ) ||
1103 ( tag == LDAP_REQ_DELETE ) ||
1104 ( tag == LDAP_REQ_MODIFY ) ||
1105 ( tag == LDAP_REQ_MODRDN )))
1107 /* Disable SLAB allocator for all update operations
1108 issued inside of a transaction */
1109 op->o_tmpmemctx = NULL;
1110 op->o_tmpmfuncs = &ch_mfuncs;
1114 /* We can use Thread-Local storage for most mallocs. We can
1115 * also use TL for ber parsing, but not on Add or Modify.
1118 memsiz = ber_len( op->o_ber ) * 64;
1119 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
1121 memsiz = SLAP_SLAB_SIZE;
1123 memctx = slap_sl_mem_create( memsiz, SLAP_SLAB_STACK, ctx, 1 );
1124 op->o_tmpmemctx = memctx;
1125 op->o_tmpmfuncs = &slap_sl_mfuncs;
1126 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1127 /* Note - the ber and its buffer are already allocated from
1128 * regular memory; this only affects subsequent mallocs that
1129 * ber_scanf may invoke.
1131 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1135 opidx = slap_req2op( tag );
1136 assert( opidx != SLAP_OP_LAST );
1137 INCR_OP_INITIATED( opidx );
1138 rc = (*(opfun[opidx]))( op, &rs );
1141 if ( rc == SLAPD_DISCONNECT ) {
1144 } else if ( opidx != SLAP_OP_LAST ) {
1145 /* increment completed operations count
1146 * only if operation was initiated
1147 * and rc != SLAPD_DISCONNECT */
1148 INCR_OP_COMPLETED( opidx );
1151 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1153 if ( opidx == SLAP_OP_BIND && conn->c_conn_state == SLAP_C_BINDING )
1154 conn->c_conn_state = SLAP_C_ACTIVE;
1156 cancel = op->o_cancel;
1157 if ( cancel != SLAP_CANCEL_NONE && cancel != SLAP_CANCEL_DONE ) {
1158 if ( cancel == SLAP_CANCEL_REQ ) {
1159 op->o_cancel = rc == SLAPD_ABANDON
1160 ? SLAP_CANCEL_ACK : LDAP_TOO_LATE;
1164 /* Fake a cond_wait with thread_yield, then
1165 * verify the result properly mutex-protected.
1167 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1169 ldap_pvt_thread_yield();
1170 } while ( (cancel = op->o_cancel) != SLAP_CANCEL_NONE
1171 && cancel != SLAP_CANCEL_DONE );
1172 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1173 } while ( (cancel = op->o_cancel) != SLAP_CANCEL_NONE
1174 && cancel != SLAP_CANCEL_DONE );
1177 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1179 LDAP_STAILQ_REMOVE( &conn->c_ops, op, Operation, o_next);
1180 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1181 conn->c_n_ops_executing--;
1182 conn->c_n_ops_completed++;
1186 case LDAP_REQ_UNBIND:
1187 /* c_mutex is locked */
1188 connection_closing( conn,
1189 tag == LDAP_REQ_UNBIND ? NULL : "operations error" );
1193 connection_resched( conn );
1194 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1195 slap_op_free( op, ctx );
1199 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1201 Connection *connection_client_setup(
1203 ldap_pvt_thread_start_t *func,
1207 ber_socket_t sfd = SLAP_SOCKNEW( s );
1209 c = connection_init( sfd, (Listener *)&dummy_list, "", "",
1210 CONN_IS_CLIENT, 0, NULL
1211 LDAP_PF_LOCAL_SENDMSG_ARG(NULL));
1213 c->c_clientfunc = func;
1214 c->c_clientarg = arg;
1216 slapd_add_internal( sfd, 0 );
1221 void connection_client_enable(
1224 slapd_set_read( c->c_sd, 1 );
1227 void connection_client_stop(
1231 ber_socket_t s = c->c_sd;
1233 /* get (locked) connection */
1234 c = connection_get( s );
1236 assert( c->c_conn_state == SLAP_C_CLIENT );
1238 c->c_listener = NULL;
1239 c->c_conn_state = SLAP_C_INVALID;
1240 c->c_struct_state = SLAP_C_UNUSED;
1241 c->c_sd = AC_SOCKET_INVALID;
1242 c->c_close_reason = "?"; /* should never be needed */
1244 c->c_sb = ber_sockbuf_alloc( );
1246 ber_len_t max = sockbuf_max_incoming;
1247 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
1249 slapd_remove( s, sb, 0, 1, 0 );
1251 connection_return( c );
1254 static int connection_read( ber_socket_t s, conn_readinfo *cri );
1256 static void* connection_read_thread( void* ctx, void* argv )
1259 conn_readinfo cri = { NULL, NULL, NULL, NULL, 0 };
1260 ber_socket_t s = (long)argv;
1263 * read incoming LDAP requests. If there is more than one,
1264 * the first one is returned with new_op
1267 if( ( rc = connection_read( s, &cri ) ) < 0 ) {
1268 Debug( LDAP_DEBUG_CONNS, "connection_read(%d) error\n", s, 0, 0 );
1269 return (void*)(long)rc;
1272 /* execute a single queued request in the same thread */
1273 if( cri.op && !cri.nullop ) {
1274 rc = (long)connection_operation( ctx, cri.op );
1275 } else if ( cri.func ) {
1276 rc = (long)cri.func( ctx, cri.arg );
1279 return (void*)(long)rc;
1282 int connection_read_activate( ber_socket_t s )
1287 * suspend reading on this file descriptor until a connection processing
1288 * thread reads data on it. Otherwise the listener thread will repeatedly
1289 * submit the same event on it to the pool.
1291 rc = slapd_clr_read( s, 0 );
1295 /* Don't let blocked writers block a pause request */
1296 if ( connections[s].c_writewaiter &&
1297 ldap_pvt_thread_pool_pausing( &connection_pool ))
1298 connection_wake_writers( &connections[s] );
1300 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1301 connection_read_thread, (void *)(long)s );
1304 Debug( LDAP_DEBUG_ANY,
1305 "connection_read_activate(%d): submit failed (%d)\n",
1313 connection_read( ber_socket_t s, conn_readinfo *cri )
1318 assert( connections != NULL );
1320 /* get (locked) connection */
1321 c = connection_get( s );
1324 Debug( LDAP_DEBUG_ANY,
1325 "connection_read(%ld): no connection!\n",
1333 if( c->c_conn_state == SLAP_C_CLOSING ) {
1334 Debug( LDAP_DEBUG_CONNS,
1335 "connection_read(%d): closing, ignoring input for id=%lu\n",
1336 s, c->c_connid, 0 );
1337 connection_return( c );
1341 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1342 cri->func = c->c_clientfunc;
1343 cri->arg = c->c_clientarg;
1344 /* read should already be cleared */
1345 connection_return( c );
1349 Debug( LDAP_DEBUG_TRACE,
1350 "connection_read(%d): checking for input on id=%lu\n",
1351 s, c->c_connid, 0 );
1354 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1355 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1357 Debug( LDAP_DEBUG_TRACE,
1358 "connection_read(%d): TLS accept failure "
1359 "error=%d id=%lu, closing\n",
1360 s, rc, c->c_connid );
1362 c->c_needs_tls_accept = 0;
1363 /* c_mutex is locked */
1364 connection_closing( c, "TLS negotiation failure" );
1365 connection_close( c );
1366 connection_return( c );
1369 } else if ( rc == 0 ) {
1371 struct berval authid = BER_BVNULL;
1373 c->c_needs_tls_accept = 0;
1375 /* we need to let SASL know */
1376 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1378 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1379 if( c->c_tls_ssf > c->c_ssf ) {
1380 c->c_ssf = c->c_tls_ssf;
1383 rc = dnX509peerNormalize( ssl, &authid );
1384 if ( rc != LDAP_SUCCESS ) {
1385 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1386 "unable to get TLS client DN, error=%d id=%lu\n",
1387 s, rc, c->c_connid );
1389 Statslog( LDAP_DEBUG_STATS,
1390 "conn=%lu fd=%d TLS established tls_ssf=%u ssf=%u\n",
1391 c->c_connid, (int) s, c->c_tls_ssf, c->c_ssf, 0 );
1392 slap_sasl_external( c, c->c_tls_ssf, &authid );
1393 if ( authid.bv_val ) free( authid.bv_val );
1394 } else if ( rc == 1 && ber_sockbuf_ctrl( c->c_sb,
1395 LBER_SB_OPT_NEEDS_WRITE, NULL )) { /* need to retry */
1396 slapd_set_write( s, 1 );
1397 connection_return( c );
1401 /* if success and data is ready, fall thru to data input loop */
1402 if( !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1404 slapd_set_read( s, 1 );
1405 connection_return( c );
1411 #ifdef HAVE_CYRUS_SASL
1412 if ( c->c_sasl_layers ) {
1413 /* If previous layer is not removed yet, give up for now */
1414 if ( !c->c_sasl_sockctx ) {
1415 slapd_set_read( s, 1 );
1416 connection_return( c );
1420 c->c_sasl_layers = 0;
1422 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1423 if( rc != LDAP_SUCCESS ) {
1424 Debug( LDAP_DEBUG_TRACE,
1425 "connection_read(%d): SASL install error "
1426 "error=%d id=%lu, closing\n",
1427 s, rc, c->c_connid );
1429 /* c_mutex is locked */
1430 connection_closing( c, "SASL layer install failure" );
1431 connection_close( c );
1432 connection_return( c );
1438 #define CONNECTION_INPUT_LOOP 1
1439 /* #define DATA_READY_LOOP 1 */
1442 /* How do we do this without getting into a busy loop ? */
1443 rc = connection_input( c, cri );
1445 #ifdef DATA_READY_LOOP
1446 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1447 #elif defined CONNECTION_INPUT_LOOP
1454 Debug( LDAP_DEBUG_CONNS,
1455 "connection_read(%d): input error=%d id=%lu, closing.\n",
1456 s, rc, c->c_connid );
1458 /* c_mutex is locked */
1459 connection_closing( c, conn_lost_str );
1460 connection_close( c );
1461 connection_return( c );
1465 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1466 slapd_set_write( s, 0 );
1469 slapd_set_read( s, 1 );
1470 connection_return( c );
1476 connection_input( Connection *conn , conn_readinfo *cri )
1484 #ifdef LDAP_CONNECTIONLESS
1491 if ( conn->c_currentber == NULL &&
1492 ( conn->c_currentber = ber_alloc()) == NULL )
1494 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1500 #ifdef LDAP_CONNECTIONLESS
1501 if ( conn->c_is_udp ) {
1502 char peername[sizeof("IP=255.255.255.255:65336")];
1503 const char *peeraddr_string = NULL;
1505 len = ber_int_sb_read(conn->c_sb, &peeraddr, sizeof(struct sockaddr));
1506 if (len != sizeof(struct sockaddr)) return 1;
1508 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1509 char addr[INET_ADDRSTRLEN];
1510 peeraddr_string = inet_ntop( AF_INET, &peeraddr.sa_in_addr.sin_addr,
1511 addr, sizeof(addr) );
1512 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1513 peeraddr_string = inet_ntoa( peeraddr.sa_in_addr.sin_addr );
1514 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1515 sprintf( peername, "IP=%s:%d",
1517 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1518 Statslog( LDAP_DEBUG_STATS,
1519 "conn=%lu UDP request from %s (%s) accepted.\n",
1520 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1524 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1525 if ( tag != LDAP_TAG_MESSAGE ) {
1526 int err = sock_errno();
1528 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1529 /* log, close and send error */
1530 Debug( LDAP_DEBUG_TRACE,
1531 "ber_get_next on fd %d failed errno=%d (%s)\n",
1532 conn->c_sd, err, sock_errstr(err) );
1533 ber_free( conn->c_currentber, 1 );
1534 conn->c_currentber = NULL;
1541 ber = conn->c_currentber;
1542 conn->c_currentber = NULL;
1544 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1545 /* log, close and send error */
1546 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0, 0 );
1551 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1552 /* log, close and send error */
1553 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0, 0 );
1559 #ifdef LDAP_CONNECTIONLESS
1560 if( conn->c_is_udp ) {
1561 if( tag == LBER_OCTETSTRING ) {
1562 if ( (tag = ber_get_stringa( ber, &cdn )) != LBER_ERROR )
1563 tag = ber_peek_tag( ber, &len );
1565 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1566 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1573 if(tag == LDAP_REQ_BIND) {
1574 /* immediately abandon all existing operations upon BIND */
1575 connection_abandon( conn );
1579 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++, ctx );
1581 Debug( LDAP_DEBUG_TRACE, "op tag 0x%lx, time %ld\n", tag,
1582 (long) op->o_time, 0);
1585 /* clear state if the connection is being reused from inactive */
1586 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1587 memset( &conn->c_pagedresults_state, 0,
1588 sizeof( conn->c_pagedresults_state ) );
1591 op->o_res_ber = NULL;
1593 #ifdef LDAP_CONNECTIONLESS
1594 if (conn->c_is_udp) {
1596 ber_str2bv( cdn, 0, 1, &op->o_dn );
1597 op->o_protocol = LDAP_VERSION2;
1599 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1600 if (op->o_res_ber == NULL) return 1;
1602 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1603 sizeof(struct sockaddr), 0 );
1605 if (rc != sizeof(struct sockaddr)) {
1606 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1610 if (op->o_protocol == LDAP_VERSION2) {
1611 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1613 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1618 #endif /* LDAP_CONNECTIONLESS */
1622 /* Don't process requests when the conn is in the middle of a
1623 * Bind, or if it's closing. Also, don't let any single conn
1624 * use up all the available threads, and don't execute if we're
1625 * currently blocked on output. And don't execute if there are
1626 * already pending ops, let them go first. Abandon operations
1627 * get exceptions to some, but not all, cases.
1631 /* Abandon and Unbind are exempt from these checks */
1632 if (conn->c_conn_state == SLAP_C_CLOSING) {
1635 } else if (conn->c_writewaiter) {
1636 defer = "awaiting write";
1638 } else if (conn->c_n_ops_pending) {
1639 defer = "pending operations";
1643 case LDAP_REQ_ABANDON:
1644 /* Unbind is exempt from these checks */
1645 if (conn->c_n_ops_executing >= connection_pool_max/2) {
1646 defer = "too many executing";
1648 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1653 case LDAP_REQ_UNBIND:
1658 int max = conn->c_dn.bv_len
1659 ? slap_conn_max_pending_auth
1660 : slap_conn_max_pending;
1662 Debug( LDAP_DEBUG_ANY,
1663 "connection_input: conn=%lu deferring operation: %s\n",
1664 conn->c_connid, defer, 0 );
1665 conn->c_n_ops_pending++;
1666 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1667 rc = ( conn->c_n_ops_pending > max ) ? -1 : 0;
1670 conn->c_n_ops_executing++;
1673 * The first op will be processed in the same thread context,
1674 * as long as there is only one op total.
1675 * Subsequent ops will be submitted to the pool by
1676 * calling connection_op_activate()
1678 if ( cri->op == NULL ) {
1679 /* the first incoming request */
1680 connection_op_queue( op );
1683 if ( !cri->nullop ) {
1685 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1686 connection_operation, (void *) cri->op );
1688 connection_op_activate( op );
1693 if ( conn->c_struct_state != SLAP_C_USED ) {
1694 /* connection must have got closed underneath us */
1699 assert( conn->c_struct_state == SLAP_C_USED );
1704 connection_resched( Connection *conn )
1708 if( conn->c_writewaiter )
1711 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1712 Debug( LDAP_DEBUG_CONNS, "connection_resched: "
1713 "attempting closing conn=%lu sd=%d\n",
1714 conn->c_connid, conn->c_sd, 0 );
1715 connection_close( conn );
1719 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1720 /* other states need different handling */
1724 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1725 if ( conn->c_n_ops_executing > connection_pool_max/2 ) break;
1727 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1728 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1730 /* pending operations should not be marked for abandonment */
1731 assert(!op->o_abandon);
1733 conn->c_n_ops_pending--;
1734 conn->c_n_ops_executing++;
1736 connection_op_activate( op );
1738 if ( conn->c_conn_state == SLAP_C_BINDING ) break;
1744 connection_init_log_prefix( Operation *op )
1746 if ( op->o_connid == (unsigned long)(-1) ) {
1747 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1748 "conn=-1 op=%lu", op->o_opid );
1751 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1752 "conn=%lu op=%lu", op->o_connid, op->o_opid );
1756 static int connection_bind_cleanup_cb( Operation *op, SlapReply *rs )
1758 op->o_conn->c_sasl_bindop = NULL;
1760 ch_free( op->o_callback );
1761 op->o_callback = NULL;
1763 return SLAP_CB_CONTINUE;
1766 static int connection_bind_cb( Operation *op, SlapReply *rs )
1768 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1769 op->o_conn->c_sasl_bind_in_progress =
1770 ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS );
1772 /* Moved here from bind.c due to ITS#4158 */
1773 op->o_conn->c_sasl_bindop = NULL;
1774 if ( op->orb_method == LDAP_AUTH_SASL ) {
1775 if( rs->sr_err == LDAP_SUCCESS ) {
1776 ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
1777 if( !BER_BVISEMPTY( &op->orb_edn ) ) {
1778 /* edn is always normalized already */
1779 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
1781 op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
1782 BER_BVZERO( &op->orb_edn );
1783 op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
1784 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1786 op->o_conn->c_sasl_ssf = op->orb_ssf;
1787 if( op->orb_ssf > op->o_conn->c_ssf ) {
1788 op->o_conn->c_ssf = op->orb_ssf;
1791 if( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
1792 ber_len_t max = sockbuf_max_incoming_auth;
1793 ber_sockbuf_ctrl( op->o_conn->c_sb,
1794 LBER_SB_OPT_SET_MAX_INCOMING, &max );
1797 /* log authorization identity */
1798 Statslog( LDAP_DEBUG_STATS,
1799 "%s BIND dn=\"%s\" mech=%s sasl_ssf=%d ssf=%d\n",
1801 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1802 op->o_conn->c_authmech.bv_val,
1803 op->orb_ssf, op->o_conn->c_ssf );
1805 Debug( LDAP_DEBUG_TRACE,
1806 "do_bind: SASL/%s bind: dn=\"%s\" sasl_ssf=%d\n",
1807 op->o_conn->c_authmech.bv_val,
1808 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1811 } else if ( rs->sr_err != LDAP_SASL_BIND_IN_PROGRESS ) {
1812 if ( !BER_BVISNULL( &op->o_conn->c_sasl_bind_mech ) ) {
1813 free( op->o_conn->c_sasl_bind_mech.bv_val );
1814 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1818 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1820 ch_free( op->o_callback );
1821 op->o_callback = NULL;
1823 return SLAP_CB_CONTINUE;
1826 static void connection_op_queue( Operation *op )
1828 ber_tag_t tag = op->o_tag;
1830 if (tag == LDAP_REQ_BIND) {
1831 slap_callback *sc = ch_calloc( 1, sizeof( slap_callback ));
1832 sc->sc_response = connection_bind_cb;
1833 sc->sc_cleanup = connection_bind_cleanup_cb;
1834 sc->sc_next = op->o_callback;
1835 op->o_callback = sc;
1836 op->o_conn->c_conn_state = SLAP_C_BINDING;
1839 if (!op->o_dn.bv_len) {
1840 op->o_authz = op->o_conn->c_authz;
1841 if ( BER_BVISNULL( &op->o_conn->c_sasl_authz_dn )) {
1842 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1843 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1845 ber_dupbv( &op->o_dn, &op->o_conn->c_sasl_authz_dn );
1846 ber_dupbv( &op->o_ndn, &op->o_conn->c_sasl_authz_dn );
1850 op->o_authtype = op->o_conn->c_authtype;
1851 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1853 if (!op->o_protocol) {
1854 op->o_protocol = op->o_conn->c_protocol
1855 ? op->o_conn->c_protocol : LDAP_VERSION3;
1858 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE &&
1859 op->o_protocol > LDAP_VERSION2)
1861 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1864 op->o_connid = op->o_conn->c_connid;
1865 connection_init_log_prefix( op );
1867 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1870 static int connection_op_activate( Operation *op )
1874 connection_op_queue( op );
1876 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1877 connection_operation, (void *) op );
1880 Debug( LDAP_DEBUG_ANY,
1881 "connection_op_activate: submit failed (%d) for conn=%lu\n",
1882 rc, op->o_connid, 0 );
1883 /* should move op to pending list */
1889 int connection_write(ber_socket_t s)
1894 assert( connections != NULL );
1896 slapd_clr_write( s, 0 );
1898 c = connection_get( s );
1900 Debug( LDAP_DEBUG_ANY,
1901 "connection_write(%ld): no connection!\n",
1907 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1908 connection_return( c );
1909 connection_read_activate( s );
1916 Debug( LDAP_DEBUG_TRACE,
1917 "connection_write(%d): waking output for id=%lu\n",
1918 s, c->c_connid, 0 );
1919 ldap_pvt_thread_mutex_lock( &c->c_write2_mutex );
1920 ldap_pvt_thread_cond_signal( &c->c_write2_cv );
1921 ldap_pvt_thread_mutex_unlock( &c->c_write2_mutex );
1923 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1924 slapd_set_read( s, 1 );
1926 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1927 slapd_set_write( s, 1 );
1930 /* If there are ops pending because of a writewaiter,
1933 while ((op = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
1934 if ( !c->c_writewaiter ) break;
1935 if ( c->c_n_ops_executing > connection_pool_max/2 ) break;
1937 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
1938 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1940 /* pending operations should not be marked for abandonment */
1941 assert(!op->o_abandon);
1943 c->c_n_ops_pending--;
1944 c->c_n_ops_executing++;
1946 connection_op_activate( op );
1951 connection_return( c );
1956 typedef struct conn_fake_extblock {
1959 } conn_fake_extblock;
1962 connection_fake_destroy(
1966 Connection conn = {0};
1968 Opheader ohdr = {0};
1970 conn_fake_extblock *eb = data;
1973 op.o_hdr->oh_extensions = eb->eb_op;
1974 conn.c_extensions = eb->eb_conn;
1979 ber_memfree_x( eb, NULL );
1980 slapi_int_free_object_extensions( SLAPI_X_EXT_OPERATION, &op );
1981 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION, &conn );
1986 connection_fake_init(
1988 OperationBuffer *opbuf,
1991 connection_fake_init2( conn, opbuf, ctx, 1 );
1995 operation_fake_init(
2001 /* set memory context */
2002 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx,
2004 op->o_tmpmfuncs = &slap_sl_mfuncs;
2005 op->o_threadctx = ctx;
2006 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
2008 op->o_counters = &slap_counters;
2010 op->o_connid = op->o_conn->c_connid;
2011 connection_init_log_prefix( op );
2016 connection_fake_init2(
2018 OperationBuffer *opbuf,
2022 Operation *op = (Operation *) opbuf;
2024 conn->c_connid = -1;
2025 conn->c_conn_idx = -1;
2026 conn->c_send_ldap_result = slap_send_ldap_result;
2027 conn->c_send_search_entry = slap_send_search_entry;
2028 conn->c_send_search_reference = slap_send_search_reference;
2029 conn->c_send_ldap_extended = slap_send_ldap_extended;
2030 conn->c_send_ldap_intermediate = slap_send_ldap_intermediate;
2031 conn->c_listener = (Listener *)&dummy_list;
2032 conn->c_peer_domain = slap_empty_bv;
2033 conn->c_peer_name = slap_empty_bv;
2035 memset( opbuf, 0, sizeof( *opbuf ));
2036 op->o_hdr = &opbuf->ob_hdr;
2037 op->o_controls = opbuf->ob_controls;
2039 operation_fake_init( conn, op, ctx, newmem );
2042 if ( slapi_plugins_used ) {
2043 conn_fake_extblock *eb;
2046 /* Use thread keys to make sure these eventually get cleaned up */
2047 if ( ldap_pvt_thread_pool_getkey( ctx, (void *)connection_fake_init,
2049 eb = ch_malloc( sizeof( *eb ));
2050 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, conn );
2051 slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
2052 eb->eb_conn = conn->c_extensions;
2053 eb->eb_op = op->o_hdr->oh_extensions;
2054 ldap_pvt_thread_pool_setkey( ctx, (void *)connection_fake_init,
2055 eb, connection_fake_destroy, NULL, NULL );
2058 conn->c_extensions = eb->eb_conn;
2059 op->o_hdr->oh_extensions = eb->eb_op;
2062 #endif /* LDAP_SLAPI */
2064 slap_op_time( &op->o_time, &op->o_tincr );
2068 connection_assign_nextid( Connection *conn )
2070 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
2071 conn->c_connid = conn_nextid++;
2072 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );