2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2007 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>
43 #include "slapi/slapi.h"
46 /* protected by connections_mutex */
47 static ldap_pvt_thread_mutex_t connections_mutex;
48 static Connection *connections = NULL;
50 static ldap_pvt_thread_mutex_t conn_nextid_mutex;
51 static unsigned long conn_nextid = 0;
53 static const char conn_lost_str[] = "connection lost";
55 /* structure state (protected by connections_mutex) */
56 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
57 #define SLAP_C_UNUSED 0x01
58 #define SLAP_C_USED 0x02
59 #define SLAP_C_PENDING 0x03
61 /* connection state (protected by c_mutex ) */
62 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
63 #define SLAP_C_INACTIVE 0x01 /* zero threads */
64 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
65 #define SLAP_C_BINDING 0x03 /* binding */
66 #define SLAP_C_CLOSING 0x04 /* closing */
67 #define SLAP_C_CLIENT 0x05 /* outbound client conn */
70 connection_state2str( int state )
73 case SLAP_C_INVALID: return "!";
74 case SLAP_C_INACTIVE: return "|";
75 case SLAP_C_ACTIVE: return "";
76 case SLAP_C_BINDING: return "B";
77 case SLAP_C_CLOSING: return "C";
78 case SLAP_C_CLIENT: return "L";
84 static Connection* connection_get( ber_socket_t s );
86 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
88 typedef struct conn_readinfo {
90 ldap_pvt_thread_start_t *func;
95 static int connection_input( Connection *c, conn_readinfo *cri );
97 static int connection_input( Connection *c );
99 static void connection_close( Connection *c );
101 static int connection_op_activate( Operation *op );
102 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
103 static void connection_op_queue( Operation *op );
105 static int connection_resched( Connection *conn );
106 static void connection_abandon( Connection *conn );
107 static void connection_destroy( Connection *c );
109 static ldap_pvt_thread_start_t connection_operation;
112 * Initialize connection management infrastructure.
114 int connections_init(void)
118 assert( connections == NULL );
120 if( connections != NULL) {
121 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
126 /* should check return of every call */
127 ldap_pvt_thread_mutex_init( &connections_mutex );
128 ldap_pvt_thread_mutex_init( &conn_nextid_mutex );
130 connections = (Connection *) ch_calloc( dtblsize, sizeof(Connection) );
132 if( connections == NULL ) {
133 Debug( LDAP_DEBUG_ANY, "connections_init: "
134 "allocation (%d*%ld) of connection array failed\n",
135 dtblsize, (long) sizeof(Connection), 0 );
139 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
140 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
142 for (i=0; i<dtblsize; i++) connections[i].c_conn_idx = i;
145 * per entry initialization of the Connection array initialization
146 * will be done by connection_init()
153 * Destroy connection management infrastructure.
156 int connections_destroy(void)
160 /* should check return of every call */
162 if( connections == NULL) {
163 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
168 for ( i = 0; i < dtblsize; i++ ) {
169 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
170 ber_sockbuf_free( connections[i].c_sb );
171 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
172 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
173 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
175 if ( slapi_plugins_used ) {
176 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION,
186 ldap_pvt_thread_mutex_destroy( &connections_mutex );
187 ldap_pvt_thread_mutex_destroy( &conn_nextid_mutex );
192 * shutdown all connections
194 int connections_shutdown(void)
198 for ( i = 0; i < dtblsize; i++ ) {
199 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
200 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
201 if( connections[i].c_struct_state == SLAP_C_USED ) {
203 /* give persistent clients a chance to cleanup */
204 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
205 ldap_pvt_thread_pool_submit( &connection_pool,
206 connections[i].c_clientfunc, connections[i].c_clientarg );
208 /* c_mutex is locked */
209 connection_closing( &connections[i], "slapd shutdown" );
210 connection_close( &connections[i] );
213 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
221 * Timeout idle connections.
223 int connections_timeout_idle(time_t now)
229 for( c = connection_first( &connindex );
231 c = connection_next( c, &connindex ) )
233 /* Don't timeout a slow-running request or a persistent
234 * outbound connection */
235 if( c->c_n_ops_executing || c->c_conn_state == SLAP_C_CLIENT ) {
239 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
241 connection_closing( c, "idletimeout" );
242 connection_close( c );
246 connection_done( c );
251 static Connection* connection_get( ber_socket_t s )
255 Debug( LDAP_DEBUG_ARGS,
256 "connection_get(%ld)\n",
259 assert( connections != NULL );
261 if(s == AC_SOCKET_INVALID) return NULL;
264 assert( s < dtblsize );
272 ldap_pvt_thread_mutex_lock( &connections_mutex );
273 for(i=0; i<dtblsize; i++) {
274 if( connections[i].c_struct_state == SLAP_C_PENDING )
277 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
278 assert( connections[i].c_conn_state == SLAP_C_INVALID );
279 assert( connections[i].c_sb == 0 );
283 ber_sockbuf_ctrl( connections[i].c_sb,
284 LBER_SB_OPT_GET_FD, &sd );
286 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
287 assert( connections[i].c_conn_state == SLAP_C_INVALID );
288 assert( sd == AC_SOCKET_INVALID );
292 /* state can actually change from used -> unused by resched,
293 * so don't assert details here.
301 ldap_pvt_thread_mutex_unlock( &connections_mutex );
308 ldap_pvt_thread_mutex_lock( &c->c_mutex );
310 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
312 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
314 /* Avoid race condition after releasing
318 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
322 if( c->c_struct_state != SLAP_C_USED ) {
323 /* connection must have been closed due to resched */
325 assert( c->c_conn_state == SLAP_C_INVALID );
326 assert( sd == AC_SOCKET_INVALID );
328 Debug( LDAP_DEBUG_TRACE,
329 "connection_get(%d): connection not used\n",
332 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
336 Debug( LDAP_DEBUG_TRACE,
337 "connection_get(%d): got connid=%lu\n",
342 assert( c->c_struct_state == SLAP_C_USED );
343 assert( c->c_conn_state != SLAP_C_INVALID );
344 assert( sd != AC_SOCKET_INVALID );
346 #ifndef SLAPD_MONITOR
347 if ( global_idletimeout > 0 )
348 #endif /* ! SLAPD_MONITOR */
350 c->c_activitytime = slap_get_time();
357 static void connection_return( Connection *c )
359 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
362 long connection_init(
366 const char* peername,
369 struct berval *authid )
375 assert( connections != NULL );
377 assert( listener != NULL );
378 assert( dnsname != NULL );
379 assert( peername != NULL );
382 assert( flags != CONN_IS_TLS );
385 if( s == AC_SOCKET_INVALID ) {
386 Debug( LDAP_DEBUG_ANY,
387 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
393 assert( s < dtblsize );
395 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
398 assert( c->c_struct_state == SLAP_C_UNUSED );
405 ldap_pvt_thread_mutex_lock( &connections_mutex );
406 for( i=0; i < dtblsize; i++) {
409 if ( connections[i].c_struct_state == SLAP_C_PENDING )
412 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
413 assert( connections[i].c_sb == 0 );
415 c->c_struct_state = SLAP_C_PENDING;
420 sd = AC_SOCKET_INVALID;
421 if (connections[i].c_sb != NULL) {
422 ber_sockbuf_ctrl( connections[i].c_sb,
423 LBER_SB_OPT_GET_FD, &sd );
426 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
427 assert( sd == AC_SOCKET_INVALID );
429 c->c_struct_state = SLAP_C_PENDING;
433 if( connections[i].c_conn_state == SLAP_C_CLIENT ) continue;
435 assert( connections[i].c_struct_state == SLAP_C_USED );
436 assert( connections[i].c_conn_state != SLAP_C_INVALID );
437 assert( sd != AC_SOCKET_INVALID );
439 ldap_pvt_thread_mutex_unlock( &connections_mutex );
442 Debug( LDAP_DEBUG_ANY,
443 "connection_init(%d): connection table full "
444 "(%d/%d)\n", s, i, dtblsize);
451 c->c_send_ldap_result = slap_send_ldap_result;
452 c->c_send_search_entry = slap_send_search_entry;
453 c->c_send_search_reference = slap_send_search_reference;
454 c->c_send_ldap_extended = slap_send_ldap_extended;
455 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
457 BER_BVZERO( &c->c_authmech );
458 BER_BVZERO( &c->c_dn );
459 BER_BVZERO( &c->c_ndn );
461 c->c_listener = NULL;
462 BER_BVZERO( &c->c_peer_domain );
463 BER_BVZERO( &c->c_peer_name );
465 LDAP_STAILQ_INIT(&c->c_ops);
466 LDAP_STAILQ_INIT(&c->c_pending_ops);
469 c->c_txn = CONN_TXN_INACTIVE;
470 c->c_txn_backend = NULL;
471 LDAP_STAILQ_INIT(&c->c_txn_ops);
474 BER_BVZERO( &c->c_sasl_bind_mech );
476 c->c_sasl_authctx = NULL;
477 c->c_sasl_sockctx = NULL;
478 c->c_sasl_extra = NULL;
479 c->c_sasl_bindop = NULL;
481 c->c_sb = ber_sockbuf_alloc( );
484 ber_len_t max = sockbuf_max_incoming;
485 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
488 c->c_currentber = NULL;
490 /* should check status of thread calls */
491 ldap_pvt_thread_mutex_init( &c->c_mutex );
492 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
493 ldap_pvt_thread_cond_init( &c->c_write_cv );
496 if ( slapi_plugins_used ) {
497 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
502 ldap_pvt_thread_mutex_lock( &c->c_mutex );
504 assert( BER_BVISNULL( &c->c_authmech ) );
505 assert( BER_BVISNULL( &c->c_dn ) );
506 assert( BER_BVISNULL( &c->c_ndn ) );
507 assert( c->c_listener == NULL );
508 assert( BER_BVISNULL( &c->c_peer_domain ) );
509 assert( BER_BVISNULL( &c->c_peer_name ) );
510 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
511 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
513 assert( c->c_txn == CONN_TXN_INACTIVE );
514 assert( c->c_txn_backend == NULL );
515 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
517 assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
518 assert( c->c_sasl_done == 0 );
519 assert( c->c_sasl_authctx == NULL );
520 assert( c->c_sasl_sockctx == NULL );
521 assert( c->c_sasl_extra == NULL );
522 assert( c->c_sasl_bindop == NULL );
523 assert( c->c_currentber == NULL );
524 assert( c->c_writewaiter == 0);
526 c->c_listener = listener;
528 if ( flags == CONN_IS_CLIENT ) {
529 c->c_conn_state = SLAP_C_CLIENT;
530 c->c_struct_state = SLAP_C_USED;
531 c->c_close_reason = "?"; /* should never be needed */
532 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &s );
533 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
538 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
539 ber_str2bv( peername, 0, 1, &c->c_peer_name );
541 c->c_n_ops_received = 0;
542 c->c_n_ops_executing = 0;
543 c->c_n_ops_pending = 0;
544 c->c_n_ops_completed = 0;
550 /* set to zero until bind, implies LDAP_VERSION3 */
553 #ifndef SLAPD_MONITOR
554 if ( global_idletimeout > 0 )
555 #endif /* ! SLAPD_MONITOR */
557 c->c_activitytime = c->c_starttime = slap_get_time();
560 #ifdef LDAP_CONNECTIONLESS
562 if( flags == CONN_IS_UDP ) {
565 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
566 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
568 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
569 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
570 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
571 LBER_SBIOD_LEVEL_PROVIDER, NULL );
576 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
577 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
579 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
580 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
584 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
585 INT_MAX, (void*)"ldap_" );
588 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
589 c /* non-NULL */ ) < 0 )
591 Debug( LDAP_DEBUG_ANY,
592 "connection_init(%d, %s): set nonblocking failed\n",
593 s, c->c_peer_name.bv_val, 0 );
596 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
597 id = c->c_connid = conn_nextid++;
598 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
600 c->c_conn_state = SLAP_C_INACTIVE;
601 c->c_struct_state = SLAP_C_USED;
602 c->c_close_reason = "?"; /* should never be needed */
604 c->c_ssf = c->c_transport_ssf = ssf;
608 if ( flags == CONN_IS_TLS ) {
610 c->c_needs_tls_accept = 1;
613 c->c_needs_tls_accept = 0;
617 slap_sasl_open( c, 0 );
618 slap_sasl_external( c, ssf, authid );
620 slapd_add_internal( s, 1 );
621 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
623 backend_connection_init(c);
628 void connection2anonymous( Connection *c )
630 assert( connections != NULL );
634 ber_len_t max = sockbuf_max_incoming;
635 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
638 if ( !BER_BVISNULL( &c->c_authmech ) ) {
639 ch_free(c->c_authmech.bv_val);
641 BER_BVZERO( &c->c_authmech );
643 if ( !BER_BVISNULL( &c->c_dn ) ) {
644 ch_free(c->c_dn.bv_val);
646 BER_BVZERO( &c->c_dn );
648 if ( !BER_BVISNULL( &c->c_ndn ) ) {
649 ch_free(c->c_ndn.bv_val);
651 BER_BVZERO( &c->c_ndn );
653 if ( !BER_BVISNULL( &c->c_sasl_authz_dn ) ) {
654 ber_memfree_x( c->c_sasl_authz_dn.bv_val, NULL );
656 BER_BVZERO( &c->c_sasl_authz_dn );
658 c->c_authz_backend = NULL;
662 connection_destroy( Connection *c )
665 unsigned long connid;
666 const char *close_reason;
669 assert( connections != NULL );
671 assert( c->c_struct_state != SLAP_C_UNUSED );
672 assert( c->c_conn_state != SLAP_C_INVALID );
673 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
674 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
676 assert( c->c_txn == CONN_TXN_INACTIVE );
677 assert( c->c_txn_backend == NULL );
678 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
680 assert( c->c_writewaiter == 0);
682 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
683 connid = c->c_connid;
684 close_reason = c->c_close_reason;
686 ldap_pvt_thread_mutex_lock( &connections_mutex );
687 c->c_struct_state = SLAP_C_PENDING;
688 ldap_pvt_thread_mutex_unlock( &connections_mutex );
690 backend_connection_destroy(c);
695 c->c_activitytime = c->c_starttime = 0;
697 connection2anonymous( c );
698 c->c_listener = NULL;
700 if(c->c_peer_domain.bv_val != NULL) {
701 free(c->c_peer_domain.bv_val);
703 BER_BVZERO( &c->c_peer_domain );
704 if(c->c_peer_name.bv_val != NULL) {
705 free(c->c_peer_name.bv_val);
707 BER_BVZERO( &c->c_peer_name );
709 c->c_sasl_bind_in_progress = 0;
710 if(c->c_sasl_bind_mech.bv_val != NULL) {
711 free(c->c_sasl_bind_mech.bv_val);
713 BER_BVZERO( &c->c_sasl_bind_mech );
715 slap_sasl_close( c );
717 if ( c->c_currentber != NULL ) {
718 ber_free( c->c_currentber, 1 );
719 c->c_currentber = NULL;
724 /* call destructors, then constructors; avoids unnecessary allocation */
725 if ( slapi_plugins_used ) {
726 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
730 c->c_conn_state = SLAP_C_INVALID;
731 c->c_struct_state = SLAP_C_UNUSED;
732 c->c_close_reason = "?"; /* should never be needed */
735 c->c_sb = ber_sockbuf_alloc( );
737 ber_len_t max = sockbuf_max_incoming;
738 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
741 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
743 /* c must be fully reset by this point; when we call slapd_remove
744 * it may get immediately reused by a new connection.
746 if ( sd != AC_SOCKET_INVALID ) {
747 slapd_remove( sd, sb, 1, 0, 0 );
749 if ( close_reason == NULL ) {
750 Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed\n",
751 connid, (long) sd, 0, 0, 0 );
753 Statslog( LDAP_DEBUG_STATS, "conn=%lu fd=%ld closed (%s)\n",
754 connid, (long) sd, close_reason, 0, 0 );
759 int connection_state_closing( Connection *c )
761 /* c_mutex must be locked by caller */
765 assert( c->c_struct_state == SLAP_C_USED );
767 state = c->c_conn_state;
769 assert( state != SLAP_C_INVALID );
771 return state == SLAP_C_CLOSING;
774 static void connection_abandon( Connection *c )
776 /* c_mutex must be locked by caller */
778 Operation *o, *next, op = {0};
784 op.o_connid = c->c_connid;
785 op.o_tag = LDAP_REQ_ABANDON;
787 for ( o = LDAP_STAILQ_FIRST( &c->c_ops ); o; o=next ) {
788 next = LDAP_STAILQ_NEXT( o, o_next );
789 op.orn_msgid = o->o_msgid;
791 op.o_bd = frontendDB;
792 frontendDB->be_abandon( &op, &rs );
796 /* remove operations in pending transaction */
797 while ( (o = LDAP_STAILQ_FIRST( &c->c_txn_ops )) != NULL) {
798 LDAP_STAILQ_REMOVE_HEAD( &c->c_txn_ops, o_next );
799 LDAP_STAILQ_NEXT(o, o_next) = NULL;
803 /* clear transaction */
804 c->c_txn_backend = NULL;
805 c->c_txn = CONN_TXN_INACTIVE;
808 /* remove pending operations */
809 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
810 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
811 LDAP_STAILQ_NEXT(o, o_next) = NULL;
816 void connection_closing( Connection *c, const char *why )
818 assert( connections != NULL );
820 assert( c->c_struct_state == SLAP_C_USED );
821 assert( c->c_conn_state != SLAP_C_INVALID );
823 /* c_mutex must be locked by caller */
825 if( c->c_conn_state != SLAP_C_CLOSING ) {
828 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
829 Debug( LDAP_DEBUG_TRACE,
830 "connection_closing: readying conn=%lu sd=%d for close\n",
831 c->c_connid, sd, 0 );
832 /* update state to closing */
833 c->c_conn_state = SLAP_C_CLOSING;
834 c->c_close_reason = why;
836 /* don't listen on this port anymore */
837 slapd_clr_read( sd, 0 );
839 /* abandon active operations */
840 connection_abandon( c );
842 /* wake write blocked operations */
843 if ( c->c_writewaiter ) {
844 ldap_pvt_thread_cond_signal( &c->c_write_cv );
845 /* ITS#4667 this may allow another thread to drop into
846 * connection_resched / connection_close before we
847 * finish, but that's OK.
849 slapd_clr_write( sd, 1 );
850 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
851 ldap_pvt_thread_mutex_lock( &c->c_write_mutex );
852 ldap_pvt_thread_mutex_lock( &c->c_mutex );
853 ldap_pvt_thread_mutex_unlock( &c->c_write_mutex );
855 slapd_clr_write( sd, 1 );
858 } else if( why == NULL && c->c_close_reason == conn_lost_str ) {
859 /* Client closed connection after doing Unbind. */
860 c->c_close_reason = NULL;
865 connection_close( Connection *c )
867 ber_socket_t sd = AC_SOCKET_INVALID;
869 assert( connections != NULL );
872 /* ITS#4667 we may have gotten here twice */
873 if ( c->c_conn_state == SLAP_C_INVALID )
876 assert( c->c_struct_state == SLAP_C_USED );
877 assert( c->c_conn_state == SLAP_C_CLOSING );
879 /* NOTE: c_mutex should be locked by caller */
881 /* NOTE: don't get the file descriptor if not needed */
882 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
883 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
886 if ( !LDAP_STAILQ_EMPTY(&c->c_ops) ||
887 !LDAP_STAILQ_EMPTY(&c->c_pending_ops) )
889 Debug( LDAP_DEBUG_TRACE,
890 "connection_close: deferring conn=%lu sd=%d\n",
891 c->c_connid, sd, 0 );
895 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
896 c->c_connid, sd, 0 );
898 connection_destroy( c );
901 unsigned long connections_nextid(void)
904 assert( connections != NULL );
906 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
910 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
915 Connection* connection_first( ber_socket_t *index )
917 assert( connections != NULL );
918 assert( index != NULL );
920 ldap_pvt_thread_mutex_lock( &connections_mutex );
921 for( *index = 0; *index < dtblsize; (*index)++) {
922 if( connections[*index].c_struct_state != SLAP_C_UNINITIALIZED ) {
926 ldap_pvt_thread_mutex_unlock( &connections_mutex );
928 return connection_next(NULL, index);
931 Connection* connection_next( Connection *c, ber_socket_t *index )
933 assert( connections != NULL );
934 assert( index != NULL );
935 assert( *index <= dtblsize );
937 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
941 ldap_pvt_thread_mutex_lock( &connections_mutex );
942 for(; *index < dtblsize; (*index)++) {
944 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
945 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
953 if( connections[*index].c_struct_state == SLAP_C_USED ) {
954 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
955 c = &connections[(*index)++];
956 if ( ldap_pvt_thread_mutex_trylock( &c->c_mutex )) {
958 ldap_pvt_thread_mutex_unlock( &connections_mutex );
959 ldap_pvt_thread_mutex_lock( &c->c_mutex );
960 ldap_pvt_thread_mutex_lock( &connections_mutex );
961 if ( c->c_struct_state != SLAP_C_USED ) {
962 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
970 c_struct = connections[*index].c_struct_state;
971 if ( c_struct == SLAP_C_PENDING )
973 assert( c_struct == SLAP_C_UNUSED );
974 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
977 ldap_pvt_thread_mutex_unlock( &connections_mutex );
981 void connection_done( Connection *c )
983 assert( connections != NULL );
985 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
989 * connection_activity - handle the request operation op on connection
990 * conn. This routine figures out what kind of operation it is and
991 * calls the appropriate stub to handle it.
995 /* FIXME: returns 0 in case of failure */
996 #define INCR_OP_INITIATED(index) \
998 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
999 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated_[(index)], 1); \
1000 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
1002 #define INCR_OP_COMPLETED(index) \
1004 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
1005 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
1006 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed_[(index)], 1); \
1007 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
1009 #else /* !SLAPD_MONITOR */
1010 #define INCR_OP_INITIATED(index) do { } while (0)
1011 #define INCR_OP_COMPLETED(index) \
1013 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
1014 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
1015 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
1017 #endif /* !SLAPD_MONITOR */
1020 * NOTE: keep in sync with enum in slapd.h
1022 static BI_op_func *opfun[] = {
1037 connection_operation( void *ctx, void *arg_v )
1039 int rc = LDAP_OTHER;
1040 Operation *op = arg_v;
1041 SlapReply rs = {REP_RESULT};
1042 ber_tag_t tag = op->o_tag;
1043 slap_op_t opidx = SLAP_OP_LAST;
1044 Connection *conn = op->o_conn;
1045 void *memctx = NULL;
1046 void *memctx_null = NULL;
1049 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex );
1050 /* FIXME: returns 0 in case of failure */
1051 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated, 1);
1052 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex );
1054 op->o_threadctx = ctx;
1055 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
1059 case LDAP_REQ_UNBIND:
1061 case LDAP_REQ_DELETE:
1062 case LDAP_REQ_MODDN:
1063 case LDAP_REQ_MODIFY:
1064 case LDAP_REQ_COMPARE:
1065 case LDAP_REQ_SEARCH:
1066 case LDAP_REQ_ABANDON:
1067 case LDAP_REQ_EXTENDED:
1070 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1071 "conn %lu unknown LDAP request 0x%lx\n",
1072 conn->c_connid, tag, 0 );
1073 op->o_tag = LBER_ERROR;
1074 rs.sr_err = LDAP_PROTOCOL_ERROR;
1075 rs.sr_text = "unknown LDAP request";
1076 send_ldap_disconnect( op, &rs );
1077 rc = SLAPD_DISCONNECT;
1078 goto operations_error;
1081 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
1082 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1083 "error: SASL bind in progress (tag=%ld).\n",
1085 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1086 "SASL bind in progress" );
1087 rc = LDAP_OPERATIONS_ERROR;
1088 goto operations_error;
1092 if (( conn->c_txn == CONN_TXN_SPECIFY ) && (
1093 ( tag == LDAP_REQ_ADD ) ||
1094 ( tag == LDAP_REQ_DELETE ) ||
1095 ( tag == LDAP_REQ_MODIFY ) ||
1096 ( tag == LDAP_REQ_MODRDN )))
1098 /* Disable SLAB allocator for all update operations
1099 issued inside of a transaction */
1100 op->o_tmpmemctx = NULL;
1101 op->o_tmpmfuncs = &ch_mfuncs;
1105 /* We can use Thread-Local storage for most mallocs. We can
1106 * also use TL for ber parsing, but not on Add or Modify.
1109 memsiz = ber_len( op->o_ber ) * 64;
1110 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
1112 memsiz = SLAP_SLAB_SIZE;
1114 memctx = slap_sl_mem_create( memsiz, SLAP_SLAB_STACK, ctx );
1115 op->o_tmpmemctx = memctx;
1116 op->o_tmpmfuncs = &slap_sl_mfuncs;
1117 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1118 /* Note - the ber and its buffer are already allocated from
1119 * regular memory; this only affects subsequent mallocs that
1120 * ber_scanf may invoke.
1122 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1126 opidx = slap_req2op( tag );
1127 assert( opidx != SLAP_OP_LAST );
1128 INCR_OP_INITIATED( opidx );
1129 rc = (*(opfun[opidx]))( op, &rs );
1132 if ( rc == SLAPD_DISCONNECT ) {
1135 } else if ( opidx != SLAP_OP_LAST ) {
1136 /* increment completed operations count
1137 * only if operation was initiated
1138 * and rc != SLAPD_DISCONNECT */
1139 INCR_OP_COMPLETED( opidx );
1142 if ( op->o_cancel == SLAP_CANCEL_REQ ) {
1143 if ( rc == SLAPD_ABANDON ) {
1144 op->o_cancel = SLAP_CANCEL_ACK;
1146 op->o_cancel = LDAP_TOO_LATE;
1150 while ( op->o_cancel != SLAP_CANCEL_NONE &&
1151 op->o_cancel != SLAP_CANCEL_DONE )
1153 ldap_pvt_thread_yield();
1156 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1158 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1160 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1161 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1163 conn->c_n_ops_executing--;
1164 conn->c_n_ops_completed++;
1168 case LDAP_REQ_UNBIND:
1169 /* c_mutex is locked */
1170 connection_closing( conn,
1171 tag == LDAP_REQ_UNBIND ? NULL : "operations error" );
1175 connection_resched( conn );
1176 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1180 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1182 int connection_client_setup(
1184 ldap_pvt_thread_start_t *func,
1190 rc = connection_init( s, (Listener *)&dummy_list, "", "",
1191 CONN_IS_CLIENT, 0, NULL );
1192 if ( rc < 0 ) return -1;
1194 c = connection_get( s );
1195 c->c_clientfunc = func;
1196 c->c_clientarg = arg;
1198 slapd_add_internal( s, 0 );
1199 slapd_set_read( s, 1 );
1200 connection_return( c );
1204 void connection_client_enable(
1207 slapd_set_read( s, 1 );
1210 void connection_client_stop(
1216 /* get (locked) connection */
1217 c = connection_get( s );
1219 assert( c->c_conn_state == SLAP_C_CLIENT );
1221 c->c_listener = NULL;
1222 c->c_conn_state = SLAP_C_INVALID;
1223 c->c_struct_state = SLAP_C_UNUSED;
1224 c->c_close_reason = "?"; /* should never be needed */
1226 c->c_sb = ber_sockbuf_alloc( );
1228 ber_len_t max = sockbuf_max_incoming;
1229 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
1231 slapd_remove( s, sb, 0, 1, 0 );
1233 connection_return( c );
1236 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1238 static int connection_read( ber_socket_t s, conn_readinfo *cri );
1240 static void* connection_read_thread( void* ctx, void* argv )
1243 conn_readinfo cri = { NULL, NULL, NULL, 0 };
1244 ber_socket_t s = (long)argv;
1247 * read incoming LDAP requests. If there is more than one,
1248 * the first one is returned with new_op
1250 if( ( rc = connection_read( s, &cri ) ) < 0 ) {
1251 Debug( LDAP_DEBUG_CONNS, "connection_read(%d) error\n", s, 0, 0 );
1252 return (void*)(long)rc;
1255 /* execute a single queued request in the same thread */
1256 if( cri.op && !cri.nullop ) {
1257 rc = (long)connection_operation( ctx, cri.op );
1258 } else if ( cri.func ) {
1259 rc = (long)cri.func( ctx, cri.arg );
1262 return (void*)(long)rc;
1265 int connection_read_activate( ber_socket_t s )
1270 * suspend reading on this file descriptor until a connection processing
1271 * thread reads data on it. Otherwise the listener thread will repeatedly
1272 * submit the same event on it to the pool.
1274 rc = slapd_clr_read( s, 0 );
1278 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1279 connection_read_thread, (void *)(long)s );
1282 Debug( LDAP_DEBUG_ANY,
1283 "connection_read_activate(%d): submit failed (%d)\n",
1291 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1293 connection_read( ber_socket_t s, conn_readinfo *cri )
1295 int connection_read(ber_socket_t s)
1301 assert( connections != NULL );
1303 /* get (locked) connection */
1304 c = connection_get( s );
1307 Debug( LDAP_DEBUG_ANY,
1308 "connection_read(%ld): no connection!\n",
1316 if( c->c_conn_state == SLAP_C_CLOSING ) {
1317 Debug( LDAP_DEBUG_TRACE,
1318 "connection_read(%d): closing, ignoring input for id=%lu\n",
1319 s, c->c_connid, 0 );
1320 connection_return( c );
1324 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1325 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1326 cri->func = c->c_clientfunc;
1327 cri->arg = c->c_clientarg;
1328 /* read should already be cleared */
1330 slapd_clr_read( s, 0 );
1331 ldap_pvt_thread_pool_submit( &connection_pool,
1332 c->c_clientfunc, c->c_clientarg );
1334 connection_return( c );
1338 Debug( LDAP_DEBUG_TRACE,
1339 "connection_read(%d): checking for input on id=%lu\n",
1340 s, c->c_connid, 0 );
1343 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1344 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1346 Debug( LDAP_DEBUG_TRACE,
1347 "connection_read(%d): TLS accept failure "
1348 "error=%d id=%lu, closing\n",
1349 s, rc, c->c_connid );
1351 c->c_needs_tls_accept = 0;
1352 /* c_mutex is locked */
1353 connection_closing( c, "TLS negotiation failure" );
1354 connection_close( c );
1355 connection_return( c );
1358 } else if ( rc == 0 ) {
1360 struct berval authid = BER_BVNULL;
1362 c->c_needs_tls_accept = 0;
1364 /* we need to let SASL know */
1365 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1367 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1368 if( c->c_tls_ssf > c->c_ssf ) {
1369 c->c_ssf = c->c_tls_ssf;
1372 rc = dnX509peerNormalize( ssl, &authid );
1373 if ( rc != LDAP_SUCCESS ) {
1374 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1375 "unable to get TLS client DN, error=%d id=%lu\n",
1376 s, rc, c->c_connid );
1378 Statslog( LDAP_DEBUG_STATS,
1379 "conn=%lu fd=%d TLS established tls_ssf=%u ssf=%u\n",
1380 c->c_connid, (int) s, c->c_tls_ssf, c->c_ssf, 0 );
1381 slap_sasl_external( c, c->c_tls_ssf, &authid );
1382 if ( authid.bv_val ) free( authid.bv_val );
1385 /* if success and data is ready, fall thru to data input loop */
1386 if( !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1388 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1389 slapd_set_read( s, 1 );
1392 connection_return( c );
1398 #ifdef HAVE_CYRUS_SASL
1399 if ( c->c_sasl_layers ) {
1400 /* If previous layer is not removed yet, give up for now */
1401 if ( !c->c_sasl_sockctx ) {
1402 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1403 slapd_set_read( s, 1 );
1406 connection_return( c );
1410 c->c_sasl_layers = 0;
1412 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1413 if( rc != LDAP_SUCCESS ) {
1414 Debug( LDAP_DEBUG_TRACE,
1415 "connection_read(%d): SASL install error "
1416 "error=%d id=%lu, closing\n",
1417 s, rc, c->c_connid );
1419 /* c_mutex is locked */
1420 connection_closing( c, "SASL layer install failure" );
1421 connection_close( c );
1422 connection_return( c );
1428 #define CONNECTION_INPUT_LOOP 1
1429 /* #define DATA_READY_LOOP 1 */
1432 /* How do we do this without getting into a busy loop ? */
1433 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1434 rc = connection_input( c, cri );
1436 rc = connection_input( c );
1439 #ifdef DATA_READY_LOOP
1440 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1441 #elif CONNECTION_INPUT_LOOP
1448 Debug( LDAP_DEBUG_CONNS,
1449 "connection_read(%d): input error=%d id=%lu, closing.\n",
1450 s, rc, c->c_connid );
1452 /* c_mutex is locked */
1453 connection_closing( c, conn_lost_str );
1454 connection_close( c );
1455 connection_return( c );
1459 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1460 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1461 slapd_set_write( s, 0 );
1464 slapd_set_read( s, 1 );
1466 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1467 slapd_set_read( s, 1 );
1470 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1471 slapd_set_write( s, 1 );
1475 connection_return( c );
1481 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1482 connection_input( Connection *conn , conn_readinfo *cri )
1484 connection_input( Connection *conn )
1493 #ifdef LDAP_CONNECTIONLESS
1499 if ( conn->c_currentber == NULL &&
1500 ( conn->c_currentber = ber_alloc()) == NULL )
1502 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1508 #ifdef LDAP_CONNECTIONLESS
1509 if ( conn->c_is_udp ) {
1510 char peername[sizeof("IP=255.255.255.255:65336")];
1512 len = ber_int_sb_read(conn->c_sb, &peeraddr, sizeof(struct sockaddr));
1513 if (len != sizeof(struct sockaddr)) return 1;
1515 sprintf( peername, "IP=%s:%d",
1516 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
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();
1529 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1531 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1532 /* log, close and send error */
1533 Debug( LDAP_DEBUG_TRACE,
1534 "ber_get_next on fd %d failed errno=%d (%s)\n",
1535 sd, err, sock_errstr(err) );
1536 ber_free( conn->c_currentber, 1 );
1537 conn->c_currentber = NULL;
1544 ber = conn->c_currentber;
1545 conn->c_currentber = NULL;
1547 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1548 /* log, close and send error */
1549 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0, 0 );
1554 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1555 /* log, close and send error */
1556 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0, 0 );
1562 #ifdef LDAP_CONNECTIONLESS
1563 if( conn->c_is_udp ) {
1564 if( tag == LBER_OCTETSTRING ) {
1565 ber_get_stringa( ber, &cdn );
1566 tag = ber_peek_tag(ber, &len);
1568 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1569 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1576 if(tag == LDAP_REQ_BIND) {
1577 /* immediately abandon all existing operations upon BIND */
1578 connection_abandon( conn );
1581 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1584 /* clear state if the connection is being reused from inactive */
1585 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1586 memset( &conn->c_pagedresults_state, 0,
1587 sizeof( conn->c_pagedresults_state ) );
1590 op->o_res_ber = NULL;
1592 #ifdef LDAP_CONNECTIONLESS
1593 if (conn->c_is_udp) {
1595 ber_str2bv( cdn, 0, 1, &op->o_dn );
1596 op->o_protocol = LDAP_VERSION2;
1598 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1599 if (op->o_res_ber == NULL) return 1;
1601 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1602 sizeof(struct sockaddr), 0 );
1604 if (rc != sizeof(struct sockaddr)) {
1605 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1609 if (op->o_protocol == LDAP_VERSION2) {
1610 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1612 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1617 #endif /* LDAP_CONNECTIONLESS */
1621 /* Don't process requests when the conn is in the middle of a
1622 * Bind, or if it's closing. Also, don't let any single conn
1623 * use up all the available threads, and don't execute if we're
1624 * currently blocked on output. And don't execute if there are
1625 * already pending ops, let them go first. Abandon operations
1626 * get exceptions to some, but not all, cases.
1630 /* Abandon and Unbind are exempt from these checks */
1631 if (conn->c_conn_state == SLAP_C_CLOSING) {
1634 } else if (conn->c_writewaiter) {
1635 defer = "awaiting write";
1637 } else if (conn->c_n_ops_pending) {
1638 defer = "pending operations";
1642 case LDAP_REQ_ABANDON:
1643 /* Unbind is exempt from these checks */
1644 if (conn->c_n_ops_executing >= connection_pool_max/2) {
1645 defer = "too many executing";
1647 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1652 case LDAP_REQ_UNBIND:
1657 int max = conn->c_dn.bv_len
1658 ? slap_conn_max_pending_auth
1659 : slap_conn_max_pending;
1661 Debug( LDAP_DEBUG_ANY,
1662 "connection_input: conn=%lu deferring operation: %s\n",
1663 conn->c_connid, defer, 0 );
1664 conn->c_n_ops_pending++;
1665 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1666 rc = ( conn->c_n_ops_pending > max ) ? -1 : 0;
1669 conn->c_n_ops_executing++;
1671 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
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 );
1691 connection_op_activate( op );
1696 if ( conn->c_struct_state != SLAP_C_USED ) {
1697 /* connection must have got closed underneath us */
1702 assert( conn->c_struct_state == SLAP_C_USED );
1707 connection_resched( Connection *conn )
1711 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1713 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1715 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1716 "attempting closing conn=%lu sd=%d\n",
1717 conn->c_connid, sd, 0 );
1718 connection_close( conn );
1722 if( conn->c_conn_state != SLAP_C_ACTIVE || conn->c_writewaiter ) {
1723 /* other states need different handling */
1727 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1728 if ( conn->c_n_ops_executing > connection_pool_max/2 ) break;
1730 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1731 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1733 /* pending operations should not be marked for abandonment */
1734 assert(!op->o_abandon);
1736 conn->c_n_ops_pending--;
1737 conn->c_n_ops_executing++;
1739 connection_op_activate( op );
1741 if ( conn->c_conn_state == SLAP_C_BINDING ) break;
1747 connection_init_log_prefix( Operation *op )
1749 if ( op->o_connid == (unsigned long)(-1) ) {
1750 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1751 "conn=-1 op=%lu", op->o_opid );
1754 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
1755 "conn=%lu op=%lu", op->o_connid, op->o_opid );
1759 static int connection_bind_cleanup_cb( Operation *op, SlapReply *rs )
1761 op->o_conn->c_sasl_bindop = NULL;
1763 ch_free( op->o_callback );
1764 op->o_callback = NULL;
1766 return SLAP_CB_CONTINUE;
1769 static int connection_bind_cb( Operation *op, SlapReply *rs )
1771 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1772 if ( op->o_conn->c_conn_state == SLAP_C_BINDING )
1773 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1774 op->o_conn->c_sasl_bind_in_progress =
1775 ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS );
1777 /* Moved here from bind.c due to ITS#4158 */
1778 op->o_conn->c_sasl_bindop = NULL;
1779 if ( op->orb_method == LDAP_AUTH_SASL ) {
1780 if( rs->sr_err == LDAP_SUCCESS ) {
1781 ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
1782 if( !BER_BVISEMPTY( &op->orb_edn ) ) {
1783 /* edn is always normalized already */
1784 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
1786 op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
1787 BER_BVZERO( &op->orb_edn );
1788 op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
1789 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1791 op->o_conn->c_sasl_ssf = op->orb_ssf;
1792 if( op->orb_ssf > op->o_conn->c_ssf ) {
1793 op->o_conn->c_ssf = op->orb_ssf;
1796 if( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
1797 ber_len_t max = sockbuf_max_incoming_auth;
1798 ber_sockbuf_ctrl( op->o_conn->c_sb,
1799 LBER_SB_OPT_SET_MAX_INCOMING, &max );
1802 /* log authorization identity */
1803 Statslog( LDAP_DEBUG_STATS,
1804 "%s BIND dn=\"%s\" mech=%s ssf=%d\n",
1806 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1807 op->o_conn->c_authmech.bv_val, op->orb_ssf, 0 );
1809 Debug( LDAP_DEBUG_TRACE,
1810 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
1811 op->o_conn->c_authmech.bv_val,
1812 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
1815 } else if ( rs->sr_err != LDAP_SASL_BIND_IN_PROGRESS ) {
1816 if ( !BER_BVISNULL( &op->o_conn->c_sasl_bind_mech ) ) {
1817 free( op->o_conn->c_sasl_bind_mech.bv_val );
1818 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
1822 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1824 ch_free( op->o_callback );
1825 op->o_callback = NULL;
1827 return SLAP_CB_CONTINUE;
1830 static void connection_op_queue( Operation *op )
1832 ber_tag_t tag = op->o_tag;
1834 if (tag == LDAP_REQ_BIND) {
1835 slap_callback *sc = ch_calloc( 1, sizeof( slap_callback ));
1836 sc->sc_response = connection_bind_cb;
1837 sc->sc_cleanup = connection_bind_cleanup_cb;
1838 sc->sc_next = op->o_callback;
1839 op->o_callback = sc;
1840 op->o_conn->c_conn_state = SLAP_C_BINDING;
1843 if (!op->o_dn.bv_len) {
1844 op->o_authz = op->o_conn->c_authz;
1845 if ( BER_BVISNULL( &op->o_conn->c_sasl_authz_dn )) {
1846 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
1847 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
1849 ber_dupbv( &op->o_dn, &op->o_conn->c_sasl_authz_dn );
1850 ber_dupbv( &op->o_ndn, &op->o_conn->c_sasl_authz_dn );
1854 op->o_authtype = op->o_conn->c_authtype;
1855 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
1857 if (!op->o_protocol) {
1858 op->o_protocol = op->o_conn->c_protocol
1859 ? op->o_conn->c_protocol : LDAP_VERSION3;
1862 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE &&
1863 op->o_protocol > LDAP_VERSION2)
1865 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
1868 op->o_connid = op->o_conn->c_connid;
1869 connection_init_log_prefix( op );
1871 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
1874 static int connection_op_activate( Operation *op )
1878 connection_op_queue( op );
1880 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1881 connection_operation, (void *) op );
1884 Debug( LDAP_DEBUG_ANY,
1885 "connection_op_activate: submit failed (%d) for conn=%lu\n",
1886 rc, op->o_connid, 0 );
1887 /* should move op to pending list */
1893 int connection_write(ber_socket_t s)
1898 assert( connections != NULL );
1900 slapd_clr_write( s, 0 );
1902 c = connection_get( s );
1904 Debug( LDAP_DEBUG_ANY,
1905 "connection_write(%ld): no connection!\n",
1912 Debug( LDAP_DEBUG_TRACE,
1913 "connection_write(%d): waking output for id=%lu\n",
1914 s, c->c_connid, 0 );
1915 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1917 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1918 slapd_set_read( s, 1 );
1920 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1921 slapd_set_write( s, 1 );
1924 /* If there are ops pending because of a writewaiter,
1927 while ((op = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
1928 if ( !c->c_writewaiter ) break;
1929 if ( c->c_n_ops_executing > connection_pool_max/2 ) break;
1931 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
1932 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1934 /* pending operations should not be marked for abandonment */
1935 assert(!op->o_abandon);
1937 c->c_n_ops_pending--;
1938 c->c_n_ops_executing++;
1940 connection_op_activate( op );
1945 connection_return( c );
1950 typedef struct conn_fake_extblock {
1953 } conn_fake_extblock;
1956 connection_fake_destroy(
1960 Connection conn = {0};
1962 Opheader ohdr = {0};
1964 conn_fake_extblock *eb = data;
1967 op.o_hdr->oh_extensions = eb->eb_op;
1968 conn.c_extensions = eb->eb_conn;
1973 Debug(LDAP_DEBUG_ANY, "connection_fake_destroy: %p\n", eb, 0, 0 );
1975 ber_memfree_x( eb, NULL );
1976 slapi_int_free_object_extensions( SLAPI_X_EXT_OPERATION, &op );
1977 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION, &conn );
1982 connection_fake_init(
1987 conn->c_connid = -1;
1988 conn->c_send_ldap_result = slap_send_ldap_result;
1989 conn->c_send_search_entry = slap_send_search_entry;
1990 conn->c_send_search_reference = slap_send_search_reference;
1991 conn->c_listener = (Listener *)&dummy_list;
1992 conn->c_peer_domain = slap_empty_bv;
1993 conn->c_peer_name = slap_empty_bv;
1995 memset(op, 0, OPERATION_BUFFER_SIZE);
1996 op->o_hdr = (Opheader *)(op+1);
1997 op->o_controls = (void **)(op->o_hdr+1);
1998 /* set memory context */
1999 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx);
2000 op->o_tmpmfuncs = &slap_sl_mfuncs;
2001 op->o_threadctx = ctx;
2002 op->o_tid = ldap_pvt_thread_pool_tid( ctx );
2005 op->o_connid = op->o_conn->c_connid;
2006 connection_init_log_prefix( op );
2009 if ( slapi_plugins_used ) {
2010 conn_fake_extblock *eb = NULL;
2012 /* Use thread keys to make sure these eventually get cleaned up */
2013 if ( ldap_pvt_thread_pool_getkey( ctx, connection_fake_init, &eb,
2015 eb = ch_malloc( sizeof( *eb ));
2016 Debug(LDAP_DEBUG_ANY, "connection_fake_init: ctx %p, %p\n", ctx, eb, 0 );
2017 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, conn );
2018 slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
2019 eb->eb_conn = conn->c_extensions;
2020 eb->eb_op = op->o_hdr->oh_extensions;
2021 ldap_pvt_thread_pool_setkey( ctx, connection_fake_init, eb,
2022 connection_fake_destroy );
2024 conn->c_extensions = eb->eb_conn;
2025 op->o_hdr->oh_extensions = eb->eb_op;
2028 #endif /* LDAP_SLAPI */
2030 slap_op_time( &op->o_time, &op->o_tincr );
2034 connection_assign_nextid( Connection *conn )
2036 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
2037 conn->c_connid = conn_nextid++;
2038 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );