2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2006 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 #ifdef SLAP_MULTI_CONN_ARRAY
47 /* for Multiple Connection Arrary (MCA) Support */
48 static ldap_pvt_thread_mutex_t* connections_mutex;
49 static Connection **connections = NULL;
51 /* set to the number of processors (round up to a power of 2) */
52 # define NUM_CONNECTION_ARRAY 4
54 /* partition the array in a modulo manner */
55 # define MCA_conn_array_id(fd) ((int)(fd)%NUM_CONNECTION_ARRAY)
56 # define MCA_conn_array_element_id(fd) ((int)(fd)/NUM_CONNECTION_ARRAY)
57 # define MCA_ARRAY_SIZE ((int)(MCA_conn_array_element_id(dtblsize) + (MCA_conn_array_id(dtblsize) ? 1 : 0)))
58 # define MCA_conn_check(fd) (dtblsize > 0 && (fd) >= 0 && (fd) < (MCA_ARRAY_SIZE*NUM_CONNECTION_ARRAY))
59 # define MCA_GET_CONNECTION(fd) (&(connections[MCA_conn_array_id(fd)]) \
60 [MCA_conn_array_element_id(fd)])
61 # define MCA_GET_CONN_MUTEX(fd) (&connections_mutex[MCA_conn_array_id(fd)])
64 /* protected by connections_mutex */
65 static ldap_pvt_thread_mutex_t connections_mutex;
66 static Connection *connections = NULL;
68 # define MCA_conn_check(fd) (dtblsize > 0 && (fd) < dtblsize)
69 # define MCA_GET_CONNECTION(fd) (&connections[s])
70 # define MCA_GET_CONN_MUTEX(fd) (&connections_mutex)
73 static ldap_pvt_thread_mutex_t conn_nextid_mutex;
74 static unsigned long conn_nextid = 0;
76 static const char conn_lost_str[] = "connection lost";
78 /* structure state (protected by connections_mutex) */
79 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
80 #define SLAP_C_UNUSED 0x01
81 #define SLAP_C_USED 0x02
83 /* connection state (protected by c_mutex ) */
84 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
85 #define SLAP_C_INACTIVE 0x01 /* zero threads */
86 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
87 #define SLAP_C_BINDING 0x03 /* binding */
88 #define SLAP_C_CLOSING 0x04 /* closing */
89 #define SLAP_C_CLIENT 0x05 /* outbound client conn */
92 connection_state2str( int state )
95 case SLAP_C_INVALID: return "!";
96 case SLAP_C_INACTIVE: return "|";
97 case SLAP_C_ACTIVE: return "";
98 case SLAP_C_BINDING: return "B";
99 case SLAP_C_CLOSING: return "C";
100 case SLAP_C_CLIENT: return "L";
106 static Connection* connection_get( ber_socket_t s );
108 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
110 typedef struct conn_readinfo {
112 ldap_pvt_thread_start_t *func;
117 static int connection_input( Connection *c, conn_readinfo *cri );
119 static int connection_input( Connection *c );
121 static void connection_close( Connection *c );
123 static int connection_op_activate( Operation *op );
124 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
125 static void connection_op_queue( Operation *op );
127 static int connection_resched( Connection *conn );
128 static void connection_abandon( Connection *conn );
129 static void connection_destroy( Connection *c );
131 static ldap_pvt_thread_start_t connection_operation;
134 * Initialize connection management infrastructure.
136 int connections_init(void)
137 #ifdef SLAP_MULTI_CONN_ARRAY
142 assert( connections == NULL );
144 if( connections != NULL) {
145 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
150 connections_mutex = (ldap_pvt_thread_mutex_t*) ch_calloc(
151 NUM_CONNECTION_ARRAY, sizeof(ldap_pvt_thread_mutex_t) );
152 if( connections_mutex == NULL ) {
153 Debug( LDAP_DEBUG_ANY, "connections_init: "
154 "allocation of connection mutexes failed\n", 0, 0, 0 );
158 connections = (Connection**) ch_calloc(
159 NUM_CONNECTION_ARRAY, sizeof(Connection*));
160 if( connections == NULL ) {
161 Debug( LDAP_DEBUG_ANY, "connections_init: "
162 "allocation of connection[%d] failed\n", 0, 0, 0 );
166 for ( i = 0; i < NUM_CONNECTION_ARRAY; i++ ) {
167 ldap_pvt_thread_mutex_init( connections_mutex+i );
168 connections[i] = (Connection*) ch_calloc(
169 MCA_ARRAY_SIZE, sizeof(Connection) );
170 if( connections[i] == NULL ) {
171 Debug( LDAP_DEBUG_ANY, "connections_init: "
172 "allocation (%d*%ld) of connection array[%d] failed\n",
173 dtblsize, (long) sizeof(Connection), i );
178 /* should check return of every call */
179 ldap_pvt_thread_mutex_init( &conn_nextid_mutex );
181 assert( connections[0]->c_struct_state == SLAP_C_UNINITIALIZED );
182 assert( connections[NUM_CONNECTION_ARRAY-1]->c_struct_state ==
183 SLAP_C_UNINITIALIZED );
185 for ( i = 0; i < NUM_CONNECTION_ARRAY; i++ ) {
186 conn = connections[i];
187 for ( j = 0; j < MCA_ARRAY_SIZE; j++ ) {
188 conn[j].c_conn_idx = j;
193 * per entry initialization of the Connection array initialization
194 * will be done by connection_init()
203 assert( connections == NULL );
205 if( connections != NULL) {
206 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
211 /* should check return of every call */
212 ldap_pvt_thread_mutex_init( &connections_mutex );
213 ldap_pvt_thread_mutex_init( &conn_nextid_mutex );
215 connections = (Connection *) ch_calloc( dtblsize, sizeof(Connection) );
217 if( connections == NULL ) {
218 Debug( LDAP_DEBUG_ANY, "connections_init: "
219 "allocation (%d*%ld) of connection array failed\n",
220 dtblsize, (long) sizeof(Connection), 0 );
224 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
225 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
227 for (i=0; i<dtblsize; i++) connections[i].c_conn_idx = i;
230 * per entry initialization of the Connection array initialization
231 * will be done by connection_init()
239 * Destroy connection management infrastructure.
242 int connections_destroy(void)
243 #ifdef SLAP_MULTI_CONN_ARRAY
248 if( connections == NULL) {
249 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
254 for ( i = 0; i < NUM_CONNECTION_ARRAY; i++ ) {
255 Connection* conn = connections[i];
256 for ( j = 0; j < MCA_ARRAY_SIZE; j++ ) {
257 if( conn[j].c_struct_state != SLAP_C_UNINITIALIZED ) {
258 ber_sockbuf_free( conn[j].c_sb );
259 ldap_pvt_thread_mutex_destroy( &conn[j].c_mutex );
260 ldap_pvt_thread_mutex_destroy( &conn[j].c_write_mutex );
261 ldap_pvt_thread_cond_destroy( &conn[j].c_write_cv );
264 if ( slapi_plugins_used ) {
265 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION,
273 for ( i = 0; i < NUM_CONNECTION_ARRAY; i++ ) {
274 free( connections[i] );
275 connections[i] = NULL;
276 ldap_pvt_thread_mutex_destroy( &connections_mutex[i] );
280 free( connections_mutex );
282 ldap_pvt_thread_mutex_destroy( &conn_nextid_mutex );
291 /* should check return of every call */
293 if( connections == NULL) {
294 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
299 for ( i = 0; i < dtblsize; i++ ) {
300 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
301 ber_sockbuf_free( connections[i].c_sb );
302 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
303 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
304 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
306 if ( slapi_plugins_used ) {
307 slapi_int_free_object_extensions( SLAPI_X_EXT_CONNECTION,
317 ldap_pvt_thread_mutex_destroy( &connections_mutex );
318 ldap_pvt_thread_mutex_destroy( &conn_nextid_mutex );
324 * shutdown all connections
326 int connections_shutdown(void)
327 #ifdef SLAP_MULTI_CONN_ARRAY
332 for ( i = 0; i < NUM_CONNECTION_ARRAY; i++ ) {
333 Connection* conn = connections[i];
334 ldap_pvt_thread_mutex_lock( &connections_mutex[i] );
335 for ( j = 0; j < MCA_ARRAY_SIZE; j++ ) {
336 if( conn[j].c_struct_state != SLAP_C_USED ) {
339 /* give persistent clients a chance to cleanup */
340 if( conn[j].c_conn_state == SLAP_C_CLIENT ) {
341 ldap_pvt_thread_pool_submit( &connection_pool,
342 conn[j].c_clientfunc, conn[j].c_clientarg );
346 ldap_pvt_thread_mutex_lock( &conn[j].c_mutex );
347 /* connections_mutex and c_mutex are locked */
348 connection_closing( &conn[j], "connection shutdown" );
349 connection_close( &conn[j] );
350 ldap_pvt_thread_mutex_unlock( &conn[j].c_mutex );
353 ldap_pvt_thread_mutex_unlock( &connections_mutex[i] );
363 ldap_pvt_thread_mutex_lock( &connections_mutex );
365 for ( i = 0; i < dtblsize; i++ ) {
366 if( connections[i].c_struct_state != SLAP_C_USED ) {
369 /* give persistent clients a chance to cleanup */
370 if( connections[i].c_conn_state == SLAP_C_CLIENT ) {
371 ldap_pvt_thread_pool_submit( &connection_pool,
372 connections[i].c_clientfunc, connections[i].c_clientarg );
376 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
378 /* connections_mutex and c_mutex are locked */
379 connection_closing( &connections[i], "slapd shutdown" );
380 connection_close( &connections[i] );
382 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
385 ldap_pvt_thread_mutex_unlock( &connections_mutex );
392 * Timeout idle connections.
394 int connections_timeout_idle(time_t now)
400 for( c = connection_first( &connindex );
402 c = connection_next( c, &connindex ) )
404 /* Don't timeout a slow-running request or a persistent
405 * outbound connection */
406 if( c->c_n_ops_executing || c->c_conn_state == SLAP_C_CLIENT ) {
410 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
412 connection_closing( c, "idletimeout" );
413 connection_close( c );
417 connection_done( c );
422 static Connection* connection_get( ber_socket_t s )
424 /* connections_mutex should be locked by caller */
428 Debug( LDAP_DEBUG_ARGS,
429 "connection_get(%ld)\n",
432 assert( connections != NULL );
434 if(s == AC_SOCKET_INVALID) return NULL;
437 assert( MCA_conn_check( s ) );
438 c = MCA_GET_CONNECTION(s);
440 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
447 for(i=0; i<dtblsize; i++) {
448 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
449 assert( connections[i].c_conn_state == SLAP_C_INVALID );
450 assert( connections[i].c_sb == 0 );
454 ber_sockbuf_ctrl( connections[i].c_sb,
455 LBER_SB_OPT_GET_FD, &sd );
457 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
458 assert( connections[i].c_conn_state == SLAP_C_INVALID );
459 assert( sd == AC_SOCKET_INVALID );
463 /* state can actually change from used -> unused by resched,
464 * so don't assert details here.
478 ldap_pvt_thread_mutex_lock( &c->c_mutex );
480 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
481 if( c->c_struct_state != SLAP_C_USED ) {
482 /* connection must have been closed due to resched */
484 assert( c->c_conn_state == SLAP_C_INVALID );
485 assert( sd == AC_SOCKET_INVALID );
487 Debug( LDAP_DEBUG_TRACE,
488 "connection_get(%d): connection not used\n",
491 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
495 Debug( LDAP_DEBUG_TRACE,
496 "connection_get(%d): got connid=%lu\n",
501 assert( c->c_struct_state == SLAP_C_USED );
502 assert( c->c_conn_state != SLAP_C_INVALID );
503 assert( sd != AC_SOCKET_INVALID );
505 #ifndef SLAPD_MONITOR
506 if ( global_idletimeout > 0 )
507 #endif /* ! SLAPD_MONITOR */
509 c->c_activitytime = slap_get_time();
516 static void connection_return( Connection *c )
518 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
521 long connection_init(
525 const char* peername,
528 struct berval *authid )
533 assert( connections != NULL );
535 assert( listener != NULL );
536 assert( dnsname != NULL );
537 assert( peername != NULL );
540 assert( flags != CONN_IS_TLS );
543 if( s == AC_SOCKET_INVALID ) {
544 Debug( LDAP_DEBUG_ANY,
545 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
551 assert( s < dtblsize );
554 ldap_pvt_thread_mutex_lock( MCA_GET_CONN_MUTEX(s) );
557 assert( MCA_conn_check( s ) );
558 c = MCA_GET_CONNECTION(s);
564 for( i=0; i < dtblsize; i++) {
567 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
568 assert( connections[i].c_sb == 0 );
573 sd = AC_SOCKET_INVALID;
574 if (connections[i].c_sb != NULL) {
575 ber_sockbuf_ctrl( connections[i].c_sb,
576 LBER_SB_OPT_GET_FD, &sd );
579 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
580 assert( sd == AC_SOCKET_INVALID );
585 if( connections[i].c_conn_state == SLAP_C_CLIENT ) continue;
587 assert( connections[i].c_struct_state == SLAP_C_USED );
588 assert( connections[i].c_conn_state != SLAP_C_INVALID );
589 assert( sd != AC_SOCKET_INVALID );
593 Debug( LDAP_DEBUG_ANY,
594 "connection_init(%d): connection table full "
595 "(%d/%d)\n", s, i, dtblsize);
596 ldap_pvt_thread_mutex_unlock( &connections_mutex );
604 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
605 c->c_send_ldap_result = slap_send_ldap_result;
606 c->c_send_search_entry = slap_send_search_entry;
607 c->c_send_search_reference = slap_send_search_reference;
608 c->c_send_ldap_extended = slap_send_ldap_extended;
609 c->c_send_ldap_intermediate = slap_send_ldap_intermediate;
611 BER_BVZERO( &c->c_authmech );
612 BER_BVZERO( &c->c_dn );
613 BER_BVZERO( &c->c_ndn );
615 c->c_listener = NULL;
616 BER_BVZERO( &c->c_peer_domain );
617 BER_BVZERO( &c->c_peer_name );
619 LDAP_STAILQ_INIT(&c->c_ops);
620 LDAP_STAILQ_INIT(&c->c_pending_ops);
624 c->c_txn_backend = NULL;
625 LDAP_STAILQ_INIT(&c->c_txn_ops);
628 BER_BVZERO( &c->c_sasl_bind_mech );
630 c->c_sasl_authctx = NULL;
631 c->c_sasl_sockctx = NULL;
632 c->c_sasl_extra = NULL;
633 c->c_sasl_bindop = NULL;
635 c->c_sb = ber_sockbuf_alloc( );
638 ber_len_t max = sockbuf_max_incoming;
639 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
642 c->c_currentber = NULL;
644 /* should check status of thread calls */
645 ldap_pvt_thread_mutex_init( &c->c_mutex );
646 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
647 ldap_pvt_thread_cond_init( &c->c_write_cv );
650 if ( slapi_plugins_used ) {
651 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, c );
655 c->c_struct_state = SLAP_C_UNUSED;
658 ldap_pvt_thread_mutex_lock( &c->c_mutex );
660 assert( c->c_struct_state == SLAP_C_UNUSED );
661 assert( BER_BVISNULL( &c->c_authmech ) );
662 assert( BER_BVISNULL( &c->c_dn ) );
663 assert( BER_BVISNULL( &c->c_ndn ) );
664 assert( c->c_listener == NULL );
665 assert( BER_BVISNULL( &c->c_peer_domain ) );
666 assert( BER_BVISNULL( &c->c_peer_name ) );
667 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
668 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
670 assert( c->c_txn == 0 );
671 assert( c->c_txn_backend == NULL );
672 assert( LDAP_STAILQ_EMPTY(&c->c_txn_ops) );
674 assert( BER_BVISNULL( &c->c_sasl_bind_mech ) );
675 assert( c->c_sasl_done == 0 );
676 assert( c->c_sasl_authctx == NULL );
677 assert( c->c_sasl_sockctx == NULL );
678 assert( c->c_sasl_extra == NULL );
679 assert( c->c_sasl_bindop == NULL );
680 assert( c->c_currentber == NULL );
681 assert( c->c_writewaiter == 0);
683 c->c_listener = listener;
685 if ( flags == CONN_IS_CLIENT ) {
686 c->c_conn_state = SLAP_C_CLIENT;
687 c->c_struct_state = SLAP_C_USED;
688 c->c_close_reason = "?"; /* should never be needed */
689 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_FD, &s );
690 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
691 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
696 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
697 ber_str2bv( peername, 0, 1, &c->c_peer_name );
699 c->c_n_ops_received = 0;
700 c->c_n_ops_executing = 0;
701 c->c_n_ops_pending = 0;
702 c->c_n_ops_completed = 0;
708 /* set to zero until bind, implies LDAP_VERSION3 */
711 #ifndef SLAPD_MONITOR
712 if ( global_idletimeout > 0 )
713 #endif /* ! SLAPD_MONITOR */
715 c->c_activitytime = c->c_starttime = slap_get_time();
718 #ifdef LDAP_CONNECTIONLESS
720 if( flags == CONN_IS_UDP ) {
723 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
724 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
726 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
727 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
728 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
729 LBER_SBIOD_LEVEL_PROVIDER, NULL );
734 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
735 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
737 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
738 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
742 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
743 INT_MAX, (void*)"ldap_" );
746 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
747 c /* non-NULL */ ) < 0 )
749 Debug( LDAP_DEBUG_ANY,
750 "connection_init(%d, %s): set nonblocking failed\n",
751 s, c->c_peer_name.bv_val, 0 );
754 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
755 id = c->c_connid = conn_nextid++;
756 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
758 c->c_conn_state = SLAP_C_INACTIVE;
759 c->c_struct_state = SLAP_C_USED;
760 c->c_close_reason = "?"; /* should never be needed */
762 c->c_ssf = c->c_transport_ssf = ssf;
766 if ( flags == CONN_IS_TLS ) {
768 c->c_needs_tls_accept = 1;
771 c->c_needs_tls_accept = 0;
775 slap_sasl_open( c, 0 );
776 slap_sasl_external( c, ssf, authid );
778 slapd_add_internal( s, 1 );
779 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
780 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
782 backend_connection_init(c);
787 void connection2anonymous( Connection *c )
789 assert( connections != NULL );
793 ber_len_t max = sockbuf_max_incoming;
794 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
797 if ( !BER_BVISNULL( &c->c_authmech ) ) {
798 ch_free(c->c_authmech.bv_val);
800 BER_BVZERO( &c->c_authmech );
802 if ( !BER_BVISNULL( &c->c_dn ) ) {
803 ch_free(c->c_dn.bv_val);
805 BER_BVZERO( &c->c_dn );
807 if ( !BER_BVISNULL( &c->c_ndn ) ) {
808 ch_free(c->c_ndn.bv_val);
810 BER_BVZERO( &c->c_ndn );
812 if ( !BER_BVISNULL( &c->c_sasl_authz_dn ) ) {
813 ber_memfree_x( c->c_sasl_authz_dn.bv_val, NULL );
815 BER_BVZERO( &c->c_sasl_authz_dn );
817 c->c_authz_backend = NULL;
821 connection_destroy( Connection *c )
823 /* note: connections_mutex should be locked by caller */
825 unsigned long connid;
826 const char *close_reason;
828 assert( connections != NULL );
830 assert( c->c_struct_state != SLAP_C_UNUSED );
831 assert( c->c_conn_state != SLAP_C_INVALID );
832 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
833 assert( c->c_writewaiter == 0);
835 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
836 connid = c->c_connid;
837 close_reason = c->c_close_reason;
839 backend_connection_destroy(c);
844 c->c_activitytime = c->c_starttime = 0;
846 connection2anonymous( c );
847 c->c_listener = NULL;
849 if(c->c_peer_domain.bv_val != NULL) {
850 free(c->c_peer_domain.bv_val);
852 BER_BVZERO( &c->c_peer_domain );
853 if(c->c_peer_name.bv_val != NULL) {
854 free(c->c_peer_name.bv_val);
856 BER_BVZERO( &c->c_peer_name );
858 c->c_sasl_bind_in_progress = 0;
859 if(c->c_sasl_bind_mech.bv_val != NULL) {
860 free(c->c_sasl_bind_mech.bv_val);
862 BER_BVZERO( &c->c_sasl_bind_mech );
864 slap_sasl_close( c );
866 if ( c->c_currentber != NULL ) {
867 ber_free( c->c_currentber, 1 );
868 c->c_currentber = NULL;
871 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
873 ber_sockbuf_free( c->c_sb );
874 if ( sd != AC_SOCKET_INVALID ) {
875 slapd_remove( sd, 1, 0, 1 );
877 Statslog( LDAP_DEBUG_STATS, (close_reason
878 ? "conn=%lu fd=%ld closed (%s)\n"
879 : "conn=%lu fd=%ld closed\n"),
880 connid, (long) sd, close_reason, 0, 0 );
885 c->c_sb = ber_sockbuf_alloc( );
888 ber_len_t max = sockbuf_max_incoming;
889 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
892 c->c_conn_state = SLAP_C_INVALID;
893 c->c_struct_state = SLAP_C_UNUSED;
894 c->c_close_reason = "?"; /* should never be needed */
897 /* call destructors, then constructors; avoids unnecessary allocation */
898 if ( slapi_plugins_used ) {
899 slapi_int_clear_object_extensions( SLAPI_X_EXT_CONNECTION, c );
904 int connection_state_closing( Connection *c )
906 /* c_mutex must be locked by caller */
910 assert( c->c_struct_state == SLAP_C_USED );
912 state = c->c_conn_state;
914 assert( state != SLAP_C_INVALID );
916 return state == SLAP_C_CLOSING;
919 static void connection_abandon( Connection *c )
921 /* c_mutex must be locked by caller */
923 Operation *o, *next, op = {0};
929 op.o_connid = c->c_connid;
930 op.o_tag = LDAP_REQ_ABANDON;
931 for ( o = LDAP_STAILQ_FIRST( &c->c_ops ); o; o=next ) {
932 next = LDAP_STAILQ_NEXT( o, o_next );
933 op.orn_msgid = o->o_msgid;
935 op.o_bd = frontendDB;
936 frontendDB->be_abandon( &op, &rs );
939 /* remove pending operations */
940 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
941 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
942 LDAP_STAILQ_NEXT(o, o_next) = NULL;
947 void connection_closing( Connection *c, const char *why )
949 assert( connections != NULL );
951 assert( c->c_struct_state == SLAP_C_USED );
952 assert( c->c_conn_state != SLAP_C_INVALID );
954 /* c_mutex must be locked by caller */
956 if( c->c_conn_state != SLAP_C_CLOSING ) {
959 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
960 Debug( LDAP_DEBUG_TRACE,
961 "connection_closing: readying conn=%lu sd=%d for close\n",
962 c->c_connid, sd, 0 );
963 /* update state to closing */
964 c->c_conn_state = SLAP_C_CLOSING;
965 c->c_close_reason = why;
967 /* don't listen on this port anymore */
968 slapd_clr_read( sd, 1 );
970 /* abandon active operations */
971 connection_abandon( c );
973 /* wake write blocked operations */
974 slapd_clr_write( sd, 1 );
975 if ( c->c_writewaiter ) {
976 ldap_pvt_thread_cond_signal( &c->c_write_cv );
977 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
978 ldap_pvt_thread_yield();
979 ldap_pvt_thread_mutex_lock( &c->c_mutex );
981 } else if( why == NULL && c->c_close_reason == conn_lost_str ) {
982 /* Client closed connection after doing Unbind. */
983 c->c_close_reason = NULL;
987 static void connection_close( Connection *c )
991 assert( connections != NULL );
993 assert( c->c_struct_state == SLAP_C_USED );
994 assert( c->c_conn_state == SLAP_C_CLOSING );
996 /* note: connections_mutex and c_mutex should be locked by caller */
998 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
999 if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
1000 Debug( LDAP_DEBUG_TRACE,
1001 "connection_close: deferring conn=%lu sd=%d\n",
1002 c->c_connid, sd, 0 );
1006 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
1007 c->c_connid, sd, 0 );
1008 connection_destroy( c );
1011 unsigned long connections_nextid(void)
1014 assert( connections != NULL );
1016 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
1020 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );
1025 Connection* connection_first( ber_socket_t *index )
1027 #ifdef SLAP_MULTI_CONN_ARRAY
1031 assert( connections != NULL );
1032 assert( index != NULL );
1034 #ifdef SLAP_MULTI_CONN_ARRAY
1035 for ( conn_array_id = 0;
1036 conn_array_id < NUM_CONNECTION_ARRAY;
1039 ldap_pvt_thread_mutex_lock( &connections_mutex[ conn_array_id ] );
1042 ldap_pvt_thread_mutex_lock( &connections_mutex );
1047 return connection_next(NULL, index);
1050 Connection* connection_next( Connection *c, ber_socket_t *index )
1051 #ifdef SLAP_MULTI_CONN_ARRAY
1055 assert( connections != NULL );
1056 assert( index != NULL );
1057 assert( *index >= 0 && *index < MCA_ARRAY_SIZE );
1059 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
1063 for(; *index < dtblsize; (*index)++) {
1064 assert( MCA_conn_check( *index ) );
1065 conn = MCA_GET_CONNECTION(*index);
1066 if( conn->c_struct_state == SLAP_C_UNINITIALIZED ) {
1067 assert( conn->c_conn_state == SLAP_C_INVALID );
1068 #ifndef HAVE_WINSOCK
1075 if( conn->c_struct_state == SLAP_C_USED ) {
1076 assert( conn->c_conn_state != SLAP_C_INVALID );
1082 assert( conn->c_struct_state == SLAP_C_UNUSED );
1083 assert( conn->c_conn_state == SLAP_C_INVALID );
1086 if( c != NULL ) ldap_pvt_thread_mutex_lock( &c->c_mutex );
1093 assert( connections != NULL );
1094 assert( index != NULL );
1095 assert( *index <= dtblsize );
1097 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
1101 for(; *index < dtblsize; (*index)++) {
1102 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
1103 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
1104 #ifndef HAVE_WINSOCK
1111 if( connections[*index].c_struct_state == SLAP_C_USED ) {
1112 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
1113 c = &connections[(*index)++];
1117 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
1118 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
1121 if( c != NULL ) ldap_pvt_thread_mutex_lock( &c->c_mutex );
1126 void connection_done( Connection *c )
1128 #ifdef SLAP_MULTI_CONN_ARRAY
1132 assert( connections != NULL );
1134 if( c != NULL ) ldap_pvt_thread_mutex_unlock( &c->c_mutex );
1136 #ifdef SLAP_MULTI_CONN_ARRAY
1137 for ( conn_array_id = 0;
1138 conn_array_id < NUM_CONNECTION_ARRAY;
1141 ldap_pvt_thread_mutex_unlock( &connections_mutex[ conn_array_id ] );
1144 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1149 * connection_activity - handle the request operation op on connection
1150 * conn. This routine figures out what kind of operation it is and
1151 * calls the appropriate stub to handle it.
1154 #ifdef SLAPD_MONITOR
1155 /* FIXME: returns 0 in case of failure */
1156 #define INCR_OP_INITIATED(index) \
1158 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
1159 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated_[(index)], 1); \
1160 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
1162 #define INCR_OP_COMPLETED(index) \
1164 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
1165 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
1166 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed_[(index)], 1); \
1167 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
1169 #else /* !SLAPD_MONITOR */
1170 #define INCR_OP_INITIATED(index) do { } while (0)
1171 #define INCR_OP_COMPLETED(index) \
1173 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex ); \
1174 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_completed, 1); \
1175 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex ); \
1177 #endif /* !SLAPD_MONITOR */
1180 * NOTE: keep in sync with enum in slapd.h
1182 static int (*opfun[])( Operation *op, SlapReply *rs ) = {
1197 connection_operation( void *ctx, void *arg_v )
1199 int rc = LDAP_OTHER;
1200 Operation *op = arg_v;
1201 SlapReply rs = {REP_RESULT};
1202 ber_tag_t tag = op->o_tag;
1204 Connection *conn = op->o_conn;
1205 void *memctx = NULL;
1206 void *memctx_null = NULL;
1209 ldap_pvt_thread_mutex_lock( &slap_counters.sc_ops_mutex );
1210 /* FIXME: returns 0 in case of failure */
1211 ldap_pvt_mp_add_ulong(slap_counters.sc_ops_initiated, 1);
1212 ldap_pvt_thread_mutex_unlock( &slap_counters.sc_ops_mutex );
1214 op->o_threadctx = ctx;
1218 case LDAP_REQ_UNBIND:
1220 case LDAP_REQ_DELETE:
1221 case LDAP_REQ_MODDN:
1222 case LDAP_REQ_MODIFY:
1223 case LDAP_REQ_COMPARE:
1224 case LDAP_REQ_SEARCH:
1225 case LDAP_REQ_ABANDON:
1226 case LDAP_REQ_EXTENDED:
1229 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1230 "conn %lu unknown LDAP request 0x%lx\n",
1231 conn->c_connid, tag, 0 );
1232 op->o_tag = LBER_ERROR;
1233 rs.sr_err = LDAP_PROTOCOL_ERROR;
1234 rs.sr_text = "unknown LDAP request";
1235 send_ldap_disconnect( op, &rs );
1236 rc = SLAPD_DISCONNECT;
1237 goto operations_error;
1240 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
1241 Debug( LDAP_DEBUG_ANY, "connection_operation: "
1242 "error: SASL bind in progress (tag=%ld).\n",
1244 send_ldap_error( op, &rs, LDAP_OPERATIONS_ERROR,
1245 "SASL bind in progress" );
1246 rc = LDAP_OPERATIONS_ERROR;
1247 goto operations_error;
1250 /* We can use Thread-Local storage for most mallocs. We can
1251 * also use TL for ber parsing, but not on Add or Modify.
1254 memsiz = ber_len( op->o_ber ) * 64;
1255 if ( SLAP_SLAB_SIZE > memsiz ) memsiz = SLAP_SLAB_SIZE;
1257 memsiz = SLAP_SLAB_SIZE;
1259 memctx = slap_sl_mem_create( memsiz, SLAP_SLAB_STACK, ctx );
1260 op->o_tmpmemctx = memctx;
1261 op->o_tmpmfuncs = &slap_sl_mfuncs;
1262 if ( tag != LDAP_REQ_ADD && tag != LDAP_REQ_MODIFY ) {
1263 /* Note - the ber and its buffer are already allocated from
1264 * regular memory; this only affects subsequent mallocs that
1265 * ber_scanf may invoke.
1267 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx );
1272 opidx = SLAP_OP_BIND;
1275 case LDAP_REQ_UNBIND:
1276 opidx = SLAP_OP_UNBIND;
1280 opidx = SLAP_OP_ADD;
1283 case LDAP_REQ_DELETE:
1284 opidx = SLAP_OP_DELETE;
1287 case LDAP_REQ_MODRDN:
1288 opidx = SLAP_OP_MODRDN;
1291 case LDAP_REQ_MODIFY:
1292 opidx = SLAP_OP_MODIFY;
1295 case LDAP_REQ_COMPARE:
1296 opidx = SLAP_OP_COMPARE;
1299 case LDAP_REQ_SEARCH:
1300 opidx = SLAP_OP_SEARCH;
1303 case LDAP_REQ_ABANDON:
1304 opidx = SLAP_OP_ABANDON;
1307 case LDAP_REQ_EXTENDED:
1308 opidx = SLAP_OP_EXTENDED;
1316 assert( opidx > -1 );
1317 INCR_OP_INITIATED( opidx );
1318 rc = (*(opfun[opidx]))( op, &rs );
1321 if ( rc == SLAPD_DISCONNECT ) {
1324 } else if ( opidx > -1 ) {
1325 /* increment completed operations count
1326 * only if operation was initiated
1327 * and rc != SLAPD_DISCONNECT */
1328 INCR_OP_COMPLETED( opidx );
1331 if ( op->o_cancel == SLAP_CANCEL_REQ ) {
1332 if ( rc == SLAPD_ABANDON ) {
1333 op->o_cancel = SLAP_CANCEL_ACK;
1335 op->o_cancel = LDAP_TOO_LATE;
1338 while ( op->o_cancel != SLAP_CANCEL_NONE &&
1339 op->o_cancel != SLAP_CANCEL_DONE )
1341 ldap_pvt_thread_yield();
1344 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1346 ber_set_option( op->o_ber, LBER_OPT_BER_MEMCTX, &memctx_null );
1348 LDAP_STAILQ_REMOVE( &conn->c_ops, op, slap_op, o_next);
1349 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1351 conn->c_n_ops_executing--;
1352 conn->c_n_ops_completed++;
1356 case LDAP_REQ_UNBIND:
1357 /* c_mutex is locked */
1358 connection_closing( conn,
1359 tag == LDAP_REQ_UNBIND ? NULL : "operations error" );
1363 connection_resched( conn );
1364 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1368 static const Listener dummy_list = { BER_BVC(""), BER_BVC("") };
1370 int connection_client_setup(
1372 ldap_pvt_thread_start_t *func,
1378 rc = connection_init( s, (Listener *)&dummy_list, "", "",
1379 CONN_IS_CLIENT, 0, NULL );
1380 if ( rc < 0 ) return -1;
1382 c = connection_get( s );
1383 c->c_clientfunc = func;
1384 c->c_clientarg = arg;
1386 slapd_add_internal( s, 0 );
1387 slapd_set_read( s, 1 );
1388 connection_return( c );
1392 void connection_client_enable(
1395 slapd_set_read( s, 1 );
1398 void connection_client_stop(
1403 /* get (locked) connection */
1404 c = connection_get( s );
1406 assert( c->c_conn_state == SLAP_C_CLIENT );
1408 c->c_listener = NULL;
1409 c->c_conn_state = SLAP_C_INVALID;
1410 c->c_struct_state = SLAP_C_UNUSED;
1411 c->c_close_reason = "?"; /* should never be needed */
1413 ber_sockbuf_free( c->c_sb );
1414 slapd_remove( s, 0, 1, 1 );
1415 c->c_sb = ber_sockbuf_alloc( );
1417 ber_len_t max = sockbuf_max_incoming;
1418 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
1421 connection_return( c );
1424 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1426 static int connection_read( ber_socket_t s, conn_readinfo *cri );
1428 static void* connection_read_thread( void* ctx, void* argv )
1431 conn_readinfo cri = { NULL, NULL, NULL, 0 };
1432 ber_socket_t s = (long)argv;
1435 * read incoming LDAP requests. If there is more than one,
1436 * the first one is returned with new_op
1438 if( ( rc = connection_read( s, &cri ) ) < 0 ) {
1439 Debug( LDAP_DEBUG_CONNS, "connection_read(%d) error\n", s, 0, 0 );
1440 return (void*)(long)rc;
1443 /* execute a single queued request in the same thread */
1444 if( cri.op && !cri.nullop ) {
1445 rc = (long)connection_operation( ctx, cri.op );
1446 } else if ( cri.func ) {
1447 rc = (long)cri.func( ctx, cri.arg );
1450 return (void*)(long)rc;
1453 int connection_read_activate( ber_socket_t s )
1458 * suspend reading on this file descriptor until a connection processing
1459 * thread reads data on it. Otherwise the listener thread will repeatedly
1460 * submit the same event on it to the pool.
1462 rc = slapd_clr_read( s, 0 );
1466 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1467 connection_read_thread, (void *)(long)s );
1470 Debug( LDAP_DEBUG_ANY,
1471 "connection_read_activate(%d): submit failed (%d)\n",
1479 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1481 connection_read( ber_socket_t s, conn_readinfo *cri )
1483 int connection_read(ber_socket_t s)
1489 assert( connections != NULL );
1491 ldap_pvt_thread_mutex_lock( MCA_GET_CONN_MUTEX(s) );
1493 /* get (locked) connection */
1494 c = connection_get( s );
1497 Debug( LDAP_DEBUG_ANY,
1498 "connection_read(%ld): no connection!\n",
1501 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
1507 if( c->c_conn_state == SLAP_C_CLOSING ) {
1508 Debug( LDAP_DEBUG_TRACE,
1509 "connection_read(%d): closing, ignoring input for id=%lu\n",
1510 s, c->c_connid, 0 );
1512 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1513 slapd_set_read( s, 1 );
1515 connection_return( c );
1516 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
1520 if ( c->c_conn_state == SLAP_C_CLIENT ) {
1521 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1522 cri->func = c->c_clientfunc;
1523 cri->arg = c->c_clientarg;
1524 /* read should already be cleared */
1526 slapd_clr_read( s, 0 );
1527 ldap_pvt_thread_pool_submit( &connection_pool,
1528 c->c_clientfunc, c->c_clientarg );
1530 connection_return( c );
1531 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
1535 Debug( LDAP_DEBUG_TRACE,
1536 "connection_read(%d): checking for input on id=%lu\n",
1537 s, c->c_connid, 0 );
1540 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1541 rc = ldap_pvt_tls_accept( c->c_sb, slap_tls_ctx );
1543 Debug( LDAP_DEBUG_TRACE,
1544 "connection_read(%d): TLS accept failure "
1545 "error=%d id=%lu, closing\n",
1546 s, rc, c->c_connid );
1548 c->c_needs_tls_accept = 0;
1549 /* connections_mutex and c_mutex are locked */
1550 connection_closing( c, "TLS negotiation failure" );
1556 /* Drain input before close, to allow SSL error codes
1557 * to propagate to client. */
1563 rc = select(s+1, &rfd, NULL, NULL, &tv);
1565 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN, NULL);
1571 connection_close( c );
1572 connection_return( c );
1573 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
1576 } else if ( rc == 0 ) {
1578 struct berval authid = BER_BVNULL;
1580 c->c_needs_tls_accept = 0;
1582 /* we need to let SASL know */
1583 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1585 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1586 if( c->c_tls_ssf > c->c_ssf ) {
1587 c->c_ssf = c->c_tls_ssf;
1590 rc = dnX509peerNormalize( ssl, &authid );
1591 if ( rc != LDAP_SUCCESS ) {
1592 Debug( LDAP_DEBUG_TRACE, "connection_read(%d): "
1593 "unable to get TLS client DN, error=%d id=%lu\n",
1594 s, rc, c->c_connid );
1596 Statslog( LDAP_DEBUG_STATS,
1597 "conn=%lu fd=%d TLS established tls_ssf=%u ssf=%u\n",
1598 c->c_connid, (int) s, c->c_tls_ssf, c->c_ssf, 0 );
1599 slap_sasl_external( c, c->c_tls_ssf, &authid );
1600 if ( authid.bv_val ) free( authid.bv_val );
1603 /* if success and data is ready, fall thru to data input loop */
1605 !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1607 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1608 slapd_set_read( s, 1 );
1611 connection_return( c );
1612 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
1618 #ifdef HAVE_CYRUS_SASL
1619 if ( c->c_sasl_layers ) {
1620 /* If previous layer is not removed yet, give up for now */
1621 if ( !c->c_sasl_sockctx ) {
1622 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1623 slapd_set_read( s, 1 );
1626 connection_return( c );
1627 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
1631 c->c_sasl_layers = 0;
1633 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_sockctx );
1634 if( rc != LDAP_SUCCESS ) {
1635 Debug( LDAP_DEBUG_TRACE,
1636 "connection_read(%d): SASL install error "
1637 "error=%d id=%lu, closing\n",
1638 s, rc, c->c_connid );
1640 /* connections_mutex and c_mutex are locked */
1641 connection_closing( c, "SASL layer install failure" );
1642 connection_close( c );
1643 connection_return( c );
1644 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
1650 #define CONNECTION_INPUT_LOOP 1
1651 /* #define DATA_READY_LOOP 1 */
1654 /* How do we do this without getting into a busy loop ? */
1655 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1656 rc = connection_input( c, cri );
1658 rc = connection_input( c );
1661 #ifdef DATA_READY_LOOP
1662 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ));
1663 #elif CONNECTION_INPUT_LOOP
1670 Debug( LDAP_DEBUG_TRACE,
1671 "connection_read(%d): input error=%d id=%lu, closing.\n",
1672 s, rc, c->c_connid );
1674 /* connections_mutex and c_mutex are locked */
1675 connection_closing( c, conn_lost_str );
1676 connection_close( c );
1677 connection_return( c );
1678 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
1682 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1683 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1684 slapd_set_write( s, 0 );
1687 slapd_set_read( s, 1 );
1689 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1690 slapd_set_read( s, 1 );
1693 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1694 slapd_set_write( s, 1 );
1698 connection_return( c );
1699 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
1705 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1706 connection_input( Connection *conn , conn_readinfo *cri )
1708 connection_input( Connection *conn )
1717 #ifdef LDAP_CONNECTIONLESS
1723 if ( conn->c_currentber == NULL &&
1724 ( conn->c_currentber = ber_alloc()) == NULL )
1726 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1732 #ifdef LDAP_CONNECTIONLESS
1733 if ( conn->c_is_udp ) {
1734 char peername[sizeof("IP=255.255.255.255:65336")];
1736 len = ber_int_sb_read(conn->c_sb, &peeraddr, sizeof(struct sockaddr));
1737 if (len != sizeof(struct sockaddr)) return 1;
1739 sprintf( peername, "IP=%s:%d",
1740 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1741 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1742 Statslog( LDAP_DEBUG_STATS,
1743 "conn=%lu UDP request from %s (%s) accepted.\n",
1744 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1748 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1749 if ( tag != LDAP_TAG_MESSAGE ) {
1753 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1755 Debug( LDAP_DEBUG_TRACE,
1756 "ber_get_next on fd %d failed errno=%d (%s)\n",
1757 sd, err, sock_errstr(err) );
1758 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1759 /* log, close and send error */
1760 ber_free( conn->c_currentber, 1 );
1761 conn->c_currentber = NULL;
1768 ber = conn->c_currentber;
1769 conn->c_currentber = NULL;
1771 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1772 /* log, close and send error */
1773 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0, 0 );
1778 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1779 /* log, close and send error */
1780 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0, 0 );
1786 #ifdef LDAP_CONNECTIONLESS
1787 if( conn->c_is_udp ) {
1788 if( tag == LBER_OCTETSTRING ) {
1789 ber_get_stringa( ber, &cdn );
1790 tag = ber_peek_tag(ber, &len);
1792 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1793 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0, 0 );
1800 if(tag == LDAP_REQ_BIND) {
1801 /* immediately abandon all existing operations upon BIND */
1802 connection_abandon( conn );
1805 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1808 /* clear state if the connection is being reused from inactive */
1809 if ( conn->c_conn_state == SLAP_C_INACTIVE ) {
1810 memset( &conn->c_pagedresults_state, 0,
1811 sizeof( conn->c_pagedresults_state ) );
1814 op->o_res_ber = NULL;
1816 #ifdef LDAP_CONNECTIONLESS
1817 if (conn->c_is_udp) {
1819 ber_str2bv( cdn, 0, 1, &op->o_dn );
1820 op->o_protocol = LDAP_VERSION2;
1822 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1823 if (op->o_res_ber == NULL) return 1;
1825 rc = ber_write( op->o_res_ber, (char *)&peeraddr,
1826 sizeof(struct sockaddr), 0 );
1828 if (rc != sizeof(struct sockaddr)) {
1829 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1833 if (op->o_protocol == LDAP_VERSION2) {
1834 rc = ber_printf(op->o_res_ber, "{is{" /*}}*/, op->o_msgid, "");
1836 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1841 #endif /* LDAP_CONNECTIONLESS */
1845 /* Don't process requests when the conn is in the middle of a
1846 * Bind, or if it's closing. Also, don't let any single conn
1847 * use up all the available threads, and don't execute if we're
1848 * currently blocked on output. And don't execute if there are
1849 * already pending ops, let them go first. Abandon operations
1850 * get exceptions to some, but not all, cases.
1854 /* Abandon and Unbind are exempt from these checks */
1855 if (conn->c_conn_state == SLAP_C_CLOSING) {
1858 } else if (conn->c_writewaiter) {
1859 defer = "awaiting write";
1861 } else if (conn->c_n_ops_pending) {
1862 defer = "pending operations";
1866 case LDAP_REQ_ABANDON:
1867 /* Unbind is exempt from these checks */
1868 if (conn->c_n_ops_executing >= connection_pool_max/2) {
1869 defer = "too many executing";
1871 } else if (conn->c_conn_state == SLAP_C_BINDING) {
1876 case LDAP_REQ_UNBIND:
1881 int max = conn->c_dn.bv_len
1882 ? slap_conn_max_pending_auth
1883 : slap_conn_max_pending;
1885 Debug( LDAP_DEBUG_ANY,
1886 "connection_input: conn=%lu deferring operation: %s\n",
1887 conn->c_connid, defer, 0 );
1888 conn->c_n_ops_pending++;
1889 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1890 rc = ( conn->c_n_ops_pending > max ) ? -1 : 0;
1893 conn->c_n_ops_executing++;
1895 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1897 * The first op will be processed in the same thread context,
1898 * as long as there is only one op total.
1899 * Subsequent ops will be submitted to the pool by
1900 * calling connection_op_activate()
1902 if ( cri->op == NULL ) {
1903 /* the first incoming request */
1904 connection_op_queue( op );
1907 if ( !cri->nullop ) {
1909 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1910 connection_operation, (void *) cri->op );
1912 connection_op_activate( op );
1915 connection_op_activate( op );
1920 if ( conn->c_struct_state != SLAP_C_USED ) {
1921 /* connection must have got closed underneath us */
1926 assert( conn->c_struct_state == SLAP_C_USED );
1931 connection_resched( Connection *conn )
1935 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1938 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1940 /* use trylock to avoid possible deadlock */
1941 rc = ldap_pvt_thread_mutex_trylock( MCA_GET_CONN_MUTEX( sd ) );
1944 Debug( LDAP_DEBUG_TRACE,
1945 "connection_resched: reaquiring locks conn=%lu sd=%d\n",
1946 conn->c_connid, sd, 0 );
1948 * reaquire locks in the right order...
1949 * this may allow another thread to close this connection,
1950 * so recheck state below.
1952 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1953 ldap_pvt_thread_mutex_lock( MCA_GET_CONN_MUTEX ( sd ) );
1954 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1957 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1958 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1959 "closed by other thread conn=%lu sd=%d\n",
1960 conn->c_connid, sd, 0 );
1962 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1963 "attempting closing conn=%lu sd=%d\n",
1964 conn->c_connid, sd, 0 );
1965 connection_close( conn );
1968 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX( sd ) );
1972 if( conn->c_conn_state != SLAP_C_ACTIVE || conn->c_writewaiter ) {
1973 /* other states need different handling */
1977 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1978 if ( conn->c_n_ops_executing > connection_pool_max/2 ) break;
1980 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1981 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1983 /* pending operations should not be marked for abandonment */
1984 assert(!op->o_abandon);
1986 conn->c_n_ops_pending--;
1987 conn->c_n_ops_executing++;
1989 connection_op_activate( op );
1991 if ( conn->c_conn_state == SLAP_C_BINDING ) break;
1997 connection_init_log_prefix( Operation *op )
1999 if ( op->o_connid == (unsigned long)(-1) ) {
2000 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
2001 "conn=-1 op=%lu", op->o_opid );
2004 snprintf( op->o_log_prefix, sizeof( op->o_log_prefix ),
2005 "conn=%lu op=%lu", op->o_connid, op->o_opid );
2009 static int connection_bind_cb( Operation *op, SlapReply *rs )
2011 slap_callback *cb = op->o_callback;
2013 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
2014 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
2015 op->o_conn->c_sasl_bind_in_progress =
2016 ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS );
2018 /* Moved here from bind.c due to ITS#4158 */
2019 op->o_conn->c_sasl_bindop = NULL;
2020 if ( op->orb_method == LDAP_AUTH_SASL ) {
2021 if( rs->sr_err == LDAP_SUCCESS ) {
2022 ber_dupbv(&op->o_conn->c_dn, &op->orb_edn);
2023 if( !BER_BVISEMPTY( &op->orb_edn ) ) {
2024 /* edn is always normalized already */
2025 ber_dupbv( &op->o_conn->c_ndn, &op->o_conn->c_dn );
2027 op->o_tmpfree( op->orb_edn.bv_val, op->o_tmpmemctx );
2028 BER_BVZERO( &op->orb_edn );
2029 op->o_conn->c_authmech = op->o_conn->c_sasl_bind_mech;
2030 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
2032 op->o_conn->c_sasl_ssf = op->orb_ssf;
2033 if( op->orb_ssf > op->o_conn->c_ssf ) {
2034 op->o_conn->c_ssf = op->orb_ssf;
2037 if( !BER_BVISEMPTY( &op->o_conn->c_dn ) ) {
2038 ber_len_t max = sockbuf_max_incoming_auth;
2039 ber_sockbuf_ctrl( op->o_conn->c_sb,
2040 LBER_SB_OPT_SET_MAX_INCOMING, &max );
2043 /* log authorization identity */
2044 Statslog( LDAP_DEBUG_STATS,
2045 "%s BIND dn=\"%s\" mech=%s ssf=%d\n",
2047 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
2048 op->o_conn->c_authmech.bv_val, op->orb_ssf, 0 );
2050 Debug( LDAP_DEBUG_TRACE,
2051 "do_bind: SASL/%s bind: dn=\"%s\" ssf=%d\n",
2052 op->o_conn->c_authmech.bv_val,
2053 BER_BVISNULL( &op->o_conn->c_dn ) ? "<empty>" : op->o_conn->c_dn.bv_val,
2056 } else if ( rs->sr_err != LDAP_SASL_BIND_IN_PROGRESS ) {
2057 if ( !BER_BVISNULL( &op->o_conn->c_sasl_bind_mech ) ) {
2058 free( op->o_conn->c_sasl_bind_mech.bv_val );
2059 BER_BVZERO( &op->o_conn->c_sasl_bind_mech );
2063 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
2065 ch_free( op->o_callback );
2066 op->o_callback = NULL;
2068 return SLAP_CB_CONTINUE;
2071 static void connection_op_queue( Operation *op )
2073 ber_tag_t tag = op->o_tag;
2075 if (tag == LDAP_REQ_BIND) {
2076 slap_callback *sc = ch_calloc( 1, sizeof( slap_callback ));
2077 sc->sc_response = connection_bind_cb;
2078 sc->sc_next = op->o_callback;
2079 op->o_callback = sc;
2080 op->o_conn->c_conn_state = SLAP_C_BINDING;
2083 if (!op->o_dn.bv_len) {
2084 op->o_authz = op->o_conn->c_authz;
2085 if ( BER_BVISNULL( &op->o_conn->c_sasl_authz_dn )) {
2086 ber_dupbv( &op->o_dn, &op->o_conn->c_dn );
2087 ber_dupbv( &op->o_ndn, &op->o_conn->c_ndn );
2089 ber_dupbv( &op->o_dn, &op->o_conn->c_sasl_authz_dn );
2090 ber_dupbv( &op->o_ndn, &op->o_conn->c_sasl_authz_dn );
2094 op->o_authtype = op->o_conn->c_authtype;
2095 ber_dupbv( &op->o_authmech, &op->o_conn->c_authmech );
2097 if (!op->o_protocol) {
2098 op->o_protocol = op->o_conn->c_protocol
2099 ? op->o_conn->c_protocol : LDAP_VERSION3;
2102 if (op->o_conn->c_conn_state == SLAP_C_INACTIVE &&
2103 op->o_protocol > LDAP_VERSION2)
2105 op->o_conn->c_conn_state = SLAP_C_ACTIVE;
2108 op->o_connid = op->o_conn->c_connid;
2109 connection_init_log_prefix( op );
2111 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op, o_next );
2114 static int connection_op_activate( Operation *op )
2118 connection_op_queue( op );
2120 rc = ldap_pvt_thread_pool_submit( &connection_pool,
2121 connection_operation, (void *) op );
2124 Debug( LDAP_DEBUG_ANY,
2125 "connection_op_activate: submit failed (%d) for conn=%lu\n",
2126 rc, op->o_connid, 0 );
2127 /* should move op to pending list */
2133 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2134 static int connection_write( ber_socket_t s );
2135 static void *connection_write_thread( void *ctx, void *arg )
2137 return (void *)(long)connection_write((long)arg);
2140 int connection_write_activate( ber_socket_t s )
2145 * suspend reading on this file descriptor until a connection processing
2146 * thread write data on it. Otherwise the listener thread will repeatedly
2147 * submit the same event on it to the pool.
2149 slapd_clr_write( s, 0);
2151 rc = ldap_pvt_thread_pool_submit( &connection_pool,
2152 connection_write_thread, (void *)(long)s );
2155 Debug( LDAP_DEBUG_ANY,
2156 "connection_write_activate(%d): submit failed (%d)\n",
2164 int connection_write(ber_socket_t s)
2169 assert( connections != NULL );
2171 ldap_pvt_thread_mutex_lock( MCA_GET_CONN_MUTEX( s ) );
2173 c = connection_get( s );
2175 Debug( LDAP_DEBUG_ANY,
2176 "connection_write(%ld): no connection!\n",
2178 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX( s ) );
2182 #ifndef SLAP_LIGHTWEIGHT_DISPATCHER
2183 slapd_clr_write( s, 0);
2187 Debug( LDAP_DEBUG_TRACE,
2188 "connection_write(%d): waking output for id=%lu\n",
2189 s, c->c_connid, 0 );
2190 ldap_pvt_thread_cond_signal( &c->c_write_cv );
2192 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
2193 slapd_set_read( s, 1 );
2195 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
2196 slapd_set_write( s, 1 );
2199 /* If there are ops pending because of a writewaiter,
2202 while ((op = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
2203 if ( !c->c_writewaiter ) break;
2204 if ( c->c_n_ops_executing > connection_pool_max/2 ) break;
2206 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
2207 LDAP_STAILQ_NEXT(op, o_next) = NULL;
2209 /* pending operations should not be marked for abandonment */
2210 assert(!op->o_abandon);
2212 c->c_n_ops_pending--;
2213 c->c_n_ops_executing++;
2215 connection_op_activate( op );
2220 connection_return( c );
2221 ldap_pvt_thread_mutex_unlock( MCA_GET_CONN_MUTEX(s) );
2226 connection_fake_init(
2231 conn->c_connid = -1;
2232 conn->c_send_ldap_result = slap_send_ldap_result;
2233 conn->c_send_search_entry = slap_send_search_entry;
2234 conn->c_send_search_reference = slap_send_search_reference;
2235 conn->c_listener = (Listener *)&dummy_list;
2236 conn->c_peer_domain = slap_empty_bv;
2237 conn->c_peer_name = slap_empty_bv;
2239 memset(op, 0, OPERATION_BUFFER_SIZE);
2240 op->o_hdr = (Opheader *)(op+1);
2241 op->o_controls = (void **)(op->o_hdr+1);
2242 /* set memory context */
2243 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx);
2244 op->o_tmpmfuncs = &slap_sl_mfuncs;
2245 op->o_threadctx = ctx;
2248 op->o_connid = op->o_conn->c_connid;
2249 connection_init_log_prefix( op );
2252 slapi_int_create_object_extensions( SLAPI_X_EXT_CONNECTION, conn );
2253 slapi_int_create_object_extensions( SLAPI_X_EXT_OPERATION, op );
2254 #endif /* LDAP_SLAPI */
2256 slap_op_time( &op->o_time, &op->o_tincr );
2260 connection_assign_nextid( Connection *conn )
2262 ldap_pvt_thread_mutex_lock( &conn_nextid_mutex );
2263 conn->c_connid = conn_nextid++;
2264 ldap_pvt_thread_mutex_unlock( &conn_nextid_mutex );