3 * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
12 #include <ac/socket.h>
14 #include <ac/string.h>
16 #include <ac/unistd.h>
22 /* protected by connections_mutex */
23 static ldap_pvt_thread_mutex_t connections_mutex;
24 static Connection *connections = NULL;
25 static unsigned long conn_nextid = 0;
27 /* structure state (protected by connections_mutex) */
28 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
29 #define SLAP_C_UNUSED 0x01
30 #define SLAP_C_USED 0x02
32 /* connection state (protected by c_mutex ) */
33 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
34 #define SLAP_C_INACTIVE 0x01 /* zero threads */
35 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
36 #define SLAP_C_BINDING 0x03 /* binding */
37 #define SLAP_C_CLOSING 0x04 /* closing */
40 connection_state2str( int state )
43 case SLAP_C_INVALID: return "!";
44 case SLAP_C_INACTIVE: return "|";
45 case SLAP_C_ACTIVE: return "";
46 case SLAP_C_BINDING: return "B";
47 case SLAP_C_CLOSING: return "C";
53 static Connection* connection_get( ber_socket_t s );
55 static int connection_input( Connection *c );
56 static void connection_close( Connection *c );
58 static int connection_op_activate( Connection *conn, Operation *op );
59 static int connection_resched( Connection *conn );
60 static void connection_abandon( Connection *conn );
61 static void connection_destroy( Connection *c );
63 static ldap_pvt_thread_start_t connection_operation;
71 * Initialize connection management infrastructure.
73 int connections_init(void)
75 assert( connections == NULL );
77 if( connections != NULL) {
79 LDAP_LOG( CONNECTION, INFO,
80 "connections_init: already initialized.\n", 0, 0, 0 );
82 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
88 /* should check return of every call */
89 ldap_pvt_thread_mutex_init( &connections_mutex );
91 connections = (Connection *) calloc( dtblsize, sizeof(Connection) );
93 if( connections == NULL ) {
95 LDAP_LOG( CONNECTION, ERR,
96 "connections_init: allocation (%d * %ld) of connection "
97 "array failed\n", dtblsize, (long) sizeof(Connection), 0 );
99 Debug( LDAP_DEBUG_ANY,
100 "connections_init: allocation (%d*%ld) of connection array failed\n",
101 dtblsize, (long) sizeof(Connection), 0 );
106 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
107 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
110 * per entry initialization of the Connection array initialization
111 * will be done by connection_init()
118 * Destroy connection management infrastructure.
120 int connections_destroy(void)
124 /* should check return of every call */
126 if( connections == NULL) {
128 LDAP_LOG( CONNECTION, INFO,
129 "connections_destroy: nothing to destroy.\n", 0, 0, 0 );
131 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
137 for ( i = 0; i < dtblsize; i++ ) {
138 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
139 ber_sockbuf_free( connections[i].c_sb );
140 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
141 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
142 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
149 ldap_pvt_thread_mutex_destroy( &connections_mutex );
154 * shutdown all connections
156 int connections_shutdown(void)
160 ldap_pvt_thread_mutex_lock( &connections_mutex );
162 for ( i = 0; i < dtblsize; i++ ) {
163 if( connections[i].c_struct_state != SLAP_C_USED ) {
167 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
169 /* connections_mutex and c_mutex are locked */
170 connection_closing( &connections[i] );
171 connection_close( &connections[i] );
173 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
176 ldap_pvt_thread_mutex_unlock( &connections_mutex );
182 * Timeout idle connections.
184 int connections_timeout_idle(time_t now)
190 for( c = connection_first( &connindex );
192 c = connection_next( c, &connindex ) )
194 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
196 connection_closing( c );
197 connection_close( c );
201 connection_done( c );
206 static Connection* connection_get( ber_socket_t s )
208 /* connections_mutex should be locked by caller */
213 LDAP_LOG( CONNECTION, ENTRY, "connection_get: socket %ld\n", (long)s, 0, 0 );
215 Debug( LDAP_DEBUG_ARGS,
216 "connection_get(%ld)\n",
220 assert( connections != NULL );
222 if(s == AC_SOCKET_INVALID) {
229 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
236 for(i=0; i<dtblsize; i++) {
237 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
238 assert( connections[i].c_conn_state == SLAP_C_INVALID );
239 assert( connections[i].c_sb == 0 );
243 ber_sockbuf_ctrl( connections[i].c_sb,
244 LBER_SB_OPT_GET_FD, &sd );
246 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
247 assert( connections[i].c_conn_state == SLAP_C_INVALID );
248 assert( sd == AC_SOCKET_INVALID );
252 /* state can actually change from used -> unused by resched,
253 * so don't assert details here.
267 ldap_pvt_thread_mutex_lock( &c->c_mutex );
269 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
270 if( c->c_struct_state != SLAP_C_USED ) {
271 /* connection must have been closed due to resched */
273 assert( c->c_conn_state == SLAP_C_INVALID );
274 assert( sd == AC_SOCKET_INVALID );
277 LDAP_LOG( CONNECTION, ARGS,
278 "connection_get: connection %d not used\n", s, 0, 0 );
280 Debug( LDAP_DEBUG_TRACE,
281 "connection_get(%d): connection not used\n",
285 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
290 LDAP_LOG( CONNECTION, RESULTS,
291 "connection_get: get for %d got connid %lu\n", s, c->c_connid, 0 );
293 Debug( LDAP_DEBUG_TRACE,
294 "connection_get(%d): got connid=%lu\n",
300 assert( c->c_struct_state == SLAP_C_USED );
301 assert( c->c_conn_state != SLAP_C_INVALID );
302 assert( sd != AC_SOCKET_INVALID );
305 c->c_activitytime = slap_get_time();
307 if( global_idletimeout > 0 ) {
308 c->c_activitytime = slap_get_time();
316 static void connection_return( Connection *c )
318 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
321 long connection_init(
325 const char* peername,
333 assert( connections != NULL );
335 assert( listener != NULL );
336 assert( dnsname != NULL );
337 assert( peername != NULL );
340 assert( tls_udp_option != 1 );
343 if( s == AC_SOCKET_INVALID ) {
345 LDAP_LOG( CONNECTION, INFO,
346 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
348 Debug( LDAP_DEBUG_ANY,
349 "connection_init(%ld): invalid.\n",
357 assert( s < dtblsize );
360 ldap_pvt_thread_mutex_lock( &connections_mutex );
371 for( i=0; i < dtblsize; i++) {
374 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
375 assert( connections[i].c_sb == 0 );
380 sd = AC_SOCKET_INVALID;
381 if (connections[i].c_sb != NULL)
382 ber_sockbuf_ctrl( connections[i].c_sb, LBER_SB_OPT_GET_FD, &sd );
384 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
385 assert( sd == AC_SOCKET_INVALID );
390 assert( connections[i].c_struct_state == SLAP_C_USED );
391 assert( connections[i].c_conn_state != SLAP_C_INVALID );
392 assert( sd != AC_SOCKET_INVALID );
397 LDAP_LOG( CONNECTION, INFO,
398 "connection_init: skt %d connection table full "
399 "(%d/%d)\n", s, i, dtblsize );
401 Debug( LDAP_DEBUG_ANY,
402 "connection_init(%d): connection table full "
403 "(%d/%d)\n", s, i, dtblsize);
405 ldap_pvt_thread_mutex_unlock( &connections_mutex );
413 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
414 c->c_send_ldap_result = slap_send_ldap_result;
415 c->c_send_search_entry = slap_send_search_entry;
416 c->c_send_search_result = slap_send_search_result;
417 c->c_send_search_reference = slap_send_search_reference;
418 c->c_send_ldap_extended = slap_send_ldap_extended;
419 #ifdef LDAP_RES_INTERMEDIATE_RESP
420 c->c_send_ldap_intermediate_resp = slap_send_ldap_intermediate_resp;
423 c->c_authmech.bv_val = NULL;
424 c->c_authmech.bv_len = 0;
425 c->c_dn.bv_val = NULL;
427 c->c_ndn.bv_val = NULL;
431 c->c_listener = NULL;
432 c->c_peer_domain.bv_val = NULL;
433 c->c_peer_domain.bv_len = 0;
434 c->c_peer_name.bv_val = NULL;
435 c->c_peer_name.bv_len = 0;
437 LDAP_STAILQ_INIT(&c->c_ops);
438 LDAP_STAILQ_INIT(&c->c_pending_ops);
440 c->c_sasl_bind_mech.bv_val = NULL;
441 c->c_sasl_bind_mech.bv_len = 0;
442 c->c_sasl_context = NULL;
443 c->c_sasl_extra = NULL;
444 c->c_sasl_bindop = NULL;
446 c->c_sb = ber_sockbuf_alloc( );
449 ber_len_t max = sockbuf_max_incoming;
450 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
453 c->c_currentber = NULL;
455 /* should check status of thread calls */
456 ldap_pvt_thread_mutex_init( &c->c_mutex );
457 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
458 ldap_pvt_thread_cond_init( &c->c_write_cv );
460 c->c_struct_state = SLAP_C_UNUSED;
463 ldap_pvt_thread_mutex_lock( &c->c_mutex );
465 assert( c->c_struct_state == SLAP_C_UNUSED );
466 assert( c->c_authmech.bv_val == NULL );
467 assert( c->c_dn.bv_val == NULL );
468 assert( c->c_ndn.bv_val == NULL );
469 assert( c->c_groups == NULL );
470 assert( c->c_listener == NULL );
471 assert( c->c_peer_domain.bv_val == NULL );
472 assert( c->c_peer_name.bv_val == NULL );
473 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
474 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
475 assert( c->c_sasl_bind_mech.bv_val == NULL );
476 assert( c->c_sasl_context == NULL );
477 assert( c->c_sasl_extra == NULL );
478 assert( c->c_sasl_bindop == NULL );
479 assert( c->c_currentber == NULL );
481 c->c_listener = listener;
482 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
483 ber_str2bv( peername, 0, 1, &c->c_peer_name );
485 c->c_n_ops_received = 0;
486 c->c_n_ops_executing = 0;
487 c->c_n_ops_pending = 0;
488 c->c_n_ops_completed = 0;
494 /* set to zero until bind, implies LDAP_VERSION3 */
498 c->c_activitytime = c->c_starttime = slap_get_time();
500 if( global_idletimeout > 0 ) {
501 c->c_activitytime = c->c_starttime = slap_get_time();
505 #ifdef LDAP_CONNECTIONLESS
507 if( tls_udp_option == 2 ) {
510 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
511 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
513 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
514 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
515 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
516 LBER_SBIOD_LEVEL_PROVIDER, NULL );
521 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
522 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
524 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
525 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
529 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
530 INT_MAX, (void*)"ldap_" );
533 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
534 c /* non-NULL */ ) < 0 )
537 LDAP_LOG( CONNECTION, INFO,
538 "connection_init: conn %lu set nonblocking failed\n",
541 Debug( LDAP_DEBUG_ANY,
542 "connection_init(%d, %s): set nonblocking failed\n",
543 s, c->c_peer_name.bv_val, 0 );
547 id = c->c_connid = conn_nextid++;
549 c->c_conn_state = SLAP_C_INACTIVE;
550 c->c_struct_state = SLAP_C_USED;
552 c->c_ssf = c->c_transport_ssf = ssf;
556 if ( tls_udp_option == 1 ) {
558 c->c_needs_tls_accept = 1;
561 c->c_needs_tls_accept = 0;
566 slap_sasl_external( c, ssf, authid );
568 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
569 ldap_pvt_thread_mutex_unlock( &connections_mutex );
571 backend_connection_init(c);
576 void connection2anonymous( Connection *c )
578 assert( connections != NULL );
582 ber_len_t max = sockbuf_max_incoming;
583 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
586 if(c->c_authmech.bv_val != NULL ) {
587 free(c->c_authmech.bv_val);
588 c->c_authmech.bv_val = NULL;
590 c->c_authmech.bv_len = 0;
592 if(c->c_dn.bv_val != NULL) {
593 free(c->c_dn.bv_val);
594 c->c_dn.bv_val = NULL;
597 if(c->c_ndn.bv_val != NULL) {
598 free(c->c_ndn.bv_val);
599 c->c_ndn.bv_val = NULL;
603 c->c_authz_backend = NULL;
606 GroupAssertion *g, *n;
607 for (g = c->c_groups; g; g=n) {
616 connection_destroy( Connection *c )
618 /* note: connections_mutex should be locked by caller */
620 unsigned long connid;
622 assert( connections != NULL );
624 assert( c->c_struct_state != SLAP_C_UNUSED );
625 assert( c->c_conn_state != SLAP_C_INVALID );
626 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
628 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
629 connid = c->c_connid;
631 backend_connection_destroy(c);
636 c->c_activitytime = c->c_starttime = 0;
638 connection2anonymous( c );
639 c->c_listener = NULL;
641 if(c->c_peer_domain.bv_val != NULL) {
642 free(c->c_peer_domain.bv_val);
643 c->c_peer_domain.bv_val = NULL;
645 c->c_peer_domain.bv_len = 0;
646 if(c->c_peer_name.bv_val != NULL) {
647 free(c->c_peer_name.bv_val);
648 c->c_peer_name.bv_val = NULL;
650 c->c_peer_name.bv_len = 0;
652 c->c_sasl_bind_in_progress = 0;
653 if(c->c_sasl_bind_mech.bv_val != NULL) {
654 free(c->c_sasl_bind_mech.bv_val);
655 c->c_sasl_bind_mech.bv_val = NULL;
657 c->c_sasl_bind_mech.bv_len = 0;
659 slap_sasl_close( c );
661 if ( c->c_currentber != NULL ) {
662 ber_free( c->c_currentber, 1 );
663 c->c_currentber = NULL;
666 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
667 if ( sd != AC_SOCKET_INVALID ) {
668 slapd_remove( sd, 0 );
670 Statslog( LDAP_DEBUG_STATS,
671 "conn=%lu fd=%d closed\n",
672 connid, sd, 0, 0, 0 );
675 ber_sockbuf_free( c->c_sb );
677 c->c_sb = ber_sockbuf_alloc( );
680 ber_len_t max = sockbuf_max_incoming;
681 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
684 c->c_conn_state = SLAP_C_INVALID;
685 c->c_struct_state = SLAP_C_UNUSED;
688 int connection_state_closing( Connection *c )
690 /* c_mutex must be locked by caller */
694 assert( c->c_struct_state == SLAP_C_USED );
696 state = c->c_conn_state;
698 assert( state != SLAP_C_INVALID );
700 return state == SLAP_C_CLOSING;
703 static void connection_abandon( Connection *c )
705 /* c_mutex must be locked by caller */
709 LDAP_STAILQ_FOREACH(o, &c->c_ops, o_next) {
713 /* remove pending operations */
714 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
715 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
716 LDAP_STAILQ_NEXT(o, o_next) = NULL;
721 void connection_closing( Connection *c )
723 assert( connections != NULL );
725 assert( c->c_struct_state == SLAP_C_USED );
726 assert( c->c_conn_state != SLAP_C_INVALID );
728 /* c_mutex must be locked by caller */
730 if( c->c_conn_state != SLAP_C_CLOSING ) {
733 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
735 LDAP_LOG( CONNECTION, DETAIL1,
736 "connection_closing: conn %lu readying socket %d for close.\n",
737 c->c_connid, sd, 0 );
739 Debug( LDAP_DEBUG_TRACE,
740 "connection_closing: readying conn=%lu sd=%d for close\n",
741 c->c_connid, sd, 0 );
743 /* update state to closing */
744 c->c_conn_state = SLAP_C_CLOSING;
746 /* don't listen on this port anymore */
747 slapd_clr_read( sd, 1 );
749 /* abandon active operations */
750 connection_abandon( c );
752 /* wake write blocked operations */
753 slapd_clr_write( sd, 1 );
754 ldap_pvt_thread_cond_signal( &c->c_write_cv );
758 static void connection_close( Connection *c )
762 assert( connections != NULL );
764 assert( c->c_struct_state == SLAP_C_USED );
765 assert( c->c_conn_state == SLAP_C_CLOSING );
767 /* note: connections_mutex and c_mutex should be locked by caller */
769 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
770 if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
772 LDAP_LOG( CONNECTION, DETAIL1,
773 "connection_close: conn %lu deferring sd %d\n",
774 c->c_connid, sd, 0 );
776 Debug( LDAP_DEBUG_TRACE,
777 "connection_close: deferring conn=%lu sd=%d\n",
778 c->c_connid, sd, 0 );
784 LDAP_LOG( CONNECTION, RESULTS,
785 "connection_close: conn %lu sd %d\n", c->c_connid, sd, 0 );
787 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
788 c->c_connid, sd, 0 );
790 connection_destroy( c );
793 unsigned long connections_nextid(void)
796 assert( connections != NULL );
798 ldap_pvt_thread_mutex_lock( &connections_mutex );
802 ldap_pvt_thread_mutex_unlock( &connections_mutex );
807 Connection* connection_first( ber_socket_t *index )
809 assert( connections != NULL );
810 assert( index != NULL );
812 ldap_pvt_thread_mutex_lock( &connections_mutex );
816 return connection_next(NULL, index);
819 Connection* connection_next( Connection *c, ber_socket_t *index )
821 assert( connections != NULL );
822 assert( index != NULL );
823 assert( *index <= dtblsize );
826 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
831 for(; *index < dtblsize; (*index)++) {
832 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
833 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
841 if( connections[*index].c_struct_state == SLAP_C_USED ) {
842 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
843 c = &connections[(*index)++];
847 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
848 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
852 ldap_pvt_thread_mutex_lock( &c->c_mutex );
858 void connection_done( Connection *c )
860 assert( connections != NULL );
863 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
866 ldap_pvt_thread_mutex_unlock( &connections_mutex );
870 * connection_activity - handle the request operation op on connection
871 * conn. This routine figures out what kind of operation it is and
872 * calls the appropriate stub to handle it.
876 #define INCR_OP(var,index) \
878 ldap_pvt_thread_mutex_lock( &num_ops_mutex ); \
880 ldap_pvt_thread_mutex_unlock( &num_ops_mutex ); \
882 #else /* !SLAPD_MONITOR */
883 #define INCR_OP(var,index)
884 #endif /* !SLAPD_MONITOR */
887 connection_operation( void *ctx, void *arg_v )
890 struct co_arg *arg = arg_v;
891 ber_tag_t tag = arg->co_op->o_tag;
893 ber_tag_t oldtag = tag;
894 #endif /* SLAPD_MONITOR */
895 Connection *conn = arg->co_conn;
897 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
899 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
901 arg->co_op->o_threadctx = ctx;
903 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
905 LDAP_LOG( CONNECTION, ERR,
906 "connection_operation: conn %lu SASL bind in progress (tag=%ld).\n",
907 conn->c_connid, (long)tag, 0 );
909 Debug( LDAP_DEBUG_ANY, "connection_operation: "
910 "error: SASL bind in progress (tag=%ld).\n",
913 send_ldap_result( conn, arg->co_op,
914 rc = LDAP_OPERATIONS_ERROR,
915 NULL, "SASL bind in progress", NULL, NULL );
916 goto operations_error;
921 INCR_OP(num_ops_initiated_, SLAP_OP_BIND);
922 rc = do_bind( conn, arg->co_op );
925 case LDAP_REQ_UNBIND:
926 INCR_OP(num_ops_initiated_, SLAP_OP_UNBIND);
927 rc = do_unbind( conn, arg->co_op );
931 INCR_OP(num_ops_initiated_, SLAP_OP_ADD);
932 rc = do_add( conn, arg->co_op );
935 case LDAP_REQ_DELETE:
936 INCR_OP(num_ops_initiated_, SLAP_OP_DELETE);
937 rc = do_delete( conn, arg->co_op );
940 case LDAP_REQ_MODRDN:
941 INCR_OP(num_ops_initiated_, SLAP_OP_MODRDN);
942 rc = do_modrdn( conn, arg->co_op );
945 case LDAP_REQ_MODIFY:
946 INCR_OP(num_ops_initiated_, SLAP_OP_MODIFY);
947 rc = do_modify( conn, arg->co_op );
950 case LDAP_REQ_COMPARE:
951 INCR_OP(num_ops_initiated_, SLAP_OP_COMPARE);
952 rc = do_compare( conn, arg->co_op );
955 case LDAP_REQ_SEARCH:
956 INCR_OP(num_ops_initiated_, SLAP_OP_SEARCH);
957 rc = do_search( conn, arg->co_op );
960 case LDAP_REQ_ABANDON:
961 INCR_OP(num_ops_initiated_, SLAP_OP_ABANDON);
962 rc = do_abandon( conn, arg->co_op );
965 case LDAP_REQ_EXTENDED:
966 INCR_OP(num_ops_initiated_, SLAP_OP_EXTENDED);
967 rc = do_extended( conn, arg->co_op );
972 LDAP_LOG( CONNECTION, INFO,
973 "connection_operation: conn %lu unknown LDAP request 0x%lx\n",
974 conn->c_connid, tag, 0 );
976 Debug( LDAP_DEBUG_ANY, "unknown LDAP request 0x%lx\n",
979 arg->co_op->o_tag = LBER_ERROR;
980 send_ldap_disconnect( conn, arg->co_op,
981 LDAP_PROTOCOL_ERROR, "unknown LDAP request" );
988 #endif /* SLAPD_MONITOR */
989 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
992 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
997 num_ops_completed_[SLAP_OP_BIND]++;
999 case LDAP_REQ_UNBIND:
1000 num_ops_completed_[SLAP_OP_UNBIND]++;
1003 num_ops_completed_[SLAP_OP_ADD]++;
1005 case LDAP_REQ_DELETE:
1006 num_ops_completed_[SLAP_OP_DELETE]++;
1008 case LDAP_REQ_MODRDN:
1009 num_ops_completed_[SLAP_OP_MODRDN]++;
1011 case LDAP_REQ_MODIFY:
1012 num_ops_completed_[SLAP_OP_MODIFY]++;
1014 case LDAP_REQ_COMPARE:
1015 num_ops_completed_[SLAP_OP_COMPARE]++;
1017 case LDAP_REQ_SEARCH:
1018 num_ops_completed_[SLAP_OP_SEARCH]++;
1020 case LDAP_REQ_ABANDON:
1021 num_ops_completed_[SLAP_OP_ABANDON]++;
1023 case LDAP_REQ_EXTENDED:
1024 num_ops_completed_[SLAP_OP_EXTENDED]++;
1027 #endif /* SLAPD_MONITOR */
1028 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
1030 #ifdef LDAP_EXOP_X_CANCEL
1031 if ( arg->co_op->o_cancel == SLAP_CANCEL_REQ ) {
1032 arg->co_op->o_cancel = LDAP_TOO_LATE;
1035 while ( arg->co_op->o_cancel != SLAP_CANCEL_NONE &&
1036 arg->co_op->o_cancel != SLAP_CANCEL_DONE )
1038 ldap_pvt_thread_yield();
1042 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1044 conn->c_n_ops_executing--;
1045 conn->c_n_ops_completed++;
1047 LDAP_STAILQ_REMOVE( &conn->c_ops, arg->co_op, slap_op, o_next);
1048 LDAP_STAILQ_NEXT(arg->co_op, o_next) = NULL;
1050 #if defined(LDAP_CLIENT_UPDATE) || defined(LDAP_SYNC)
1051 if ( arg->co_op->o_cancel == SLAP_CANCEL_ACK )
1054 #ifdef LDAP_CLIENT_UPDATE
1055 if ( ( arg->co_op->o_clientupdate_type & SLAP_LCUP_PERSIST ) )
1059 if ( ( arg->co_op->o_sync_mode & SLAP_SYNC_PERSIST ) )
1065 slap_op_free( arg->co_op );
1070 arg->co_conn = NULL;
1071 free( (char *) arg );
1076 case LDAP_REQ_UNBIND:
1077 /* c_mutex is locked */
1078 connection_closing( conn );
1082 conn->c_sasl_bind_in_progress =
1083 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
1085 if( conn->c_conn_state == SLAP_C_BINDING) {
1086 conn->c_conn_state = SLAP_C_ACTIVE;
1090 connection_resched( conn );
1092 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1097 int connection_read(ber_socket_t s)
1102 assert( connections != NULL );
1104 ldap_pvt_thread_mutex_lock( &connections_mutex );
1106 /* get (locked) connection */
1107 c = connection_get( s );
1111 LDAP_LOG( CONNECTION, INFO,
1112 "connection_read: sock %ld no connection\n", (long)s, 0, 0 );
1114 Debug( LDAP_DEBUG_ANY,
1115 "connection_read(%ld): no connection!\n",
1120 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1126 if( c->c_conn_state == SLAP_C_CLOSING ) {
1128 LDAP_LOG( CONNECTION, INFO,
1129 "connection_read: conn %lu connection closing, ignoring input\n",
1130 c->c_connid, 0, 0 );
1132 Debug( LDAP_DEBUG_TRACE,
1133 "connection_read(%d): closing, ignoring input for id=%lu\n",
1134 s, c->c_connid, 0 );
1136 connection_return( c );
1137 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1142 LDAP_LOG( CONNECTION, DETAIL1,
1143 "connection_read: conn %lu checking for input.\n",
1144 c->c_connid, 0, 0 );
1146 Debug( LDAP_DEBUG_TRACE,
1147 "connection_read(%d): checking for input on id=%lu\n",
1148 s, c->c_connid, 0 );
1152 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1153 rc = ldap_pvt_tls_accept( c->c_sb, NULL );
1155 #if 0 /* required by next #if 0 */
1161 LDAP_LOG( CONNECTION, ERR,
1162 "connection_read: conn %lu TLS accept error, error %d\n",
1163 c->c_connid, rc, 0 );
1165 Debug( LDAP_DEBUG_TRACE,
1166 "connection_read(%d): TLS accept error "
1167 "error=%d id=%lu, closing\n",
1168 s, rc, c->c_connid );
1170 c->c_needs_tls_accept = 0;
1171 /* connections_mutex and c_mutex are locked */
1172 connection_closing( c );
1175 /* Drain input before close, to allow SSL error codes
1176 * to propagate to client. */
1182 rc = select(s+1, &rfd, NULL, NULL, &tv);
1184 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN, NULL);
1188 connection_close( c );
1190 } else if ( rc == 0 ) {
1192 struct berval authid = { 0, NULL };
1194 c->c_needs_tls_accept = 0;
1196 /* we need to let SASL know */
1197 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1199 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1200 if( c->c_tls_ssf > c->c_ssf ) {
1201 c->c_ssf = c->c_tls_ssf;
1204 rc = dnX509peerNormalize( ssl, &authid );
1205 if ( rc != LDAP_SUCCESS ) {
1207 LDAP_LOG( CONNECTION, INFO,
1208 "connection_read: conn %lu unable to get TLS client DN, "
1209 "error %d\n", c->c_connid, rc, 0 );
1211 Debug( LDAP_DEBUG_TRACE,
1212 "connection_read(%d): unable to get TLS client DN "
1213 "error=%d id=%lu\n",
1214 s, rc, c->c_connid );
1217 slap_sasl_external( c, c->c_tls_ssf, authid.bv_val );
1218 if ( authid.bv_val ) free( authid.bv_val );
1221 /* if success and data is ready, fall thru to data input loop */
1223 !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1225 connection_return( c );
1226 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1232 #ifdef HAVE_CYRUS_SASL
1233 if ( c->c_sasl_layers ) {
1234 c->c_sasl_layers = 0;
1236 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_context );
1238 if( rc != LDAP_SUCCESS ) {
1240 LDAP_LOG( CONNECTION, ERR,
1241 "connection_read: conn %lu SASL install error %d, closing\n",
1242 c->c_connid, rc, 0 );
1244 Debug( LDAP_DEBUG_TRACE,
1245 "connection_read(%d): SASL install error "
1246 "error=%d id=%lu, closing\n",
1247 s, rc, c->c_connid );
1249 /* connections_mutex and c_mutex are locked */
1250 connection_closing( c );
1251 connection_close( c );
1252 connection_return( c );
1253 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1259 #define CONNECTION_INPUT_LOOP 1
1260 /* #define DATA_READY_LOOP 1 */
1264 /* How do we do this without getting into a busy loop ? */
1265 rc = connection_input( c );
1267 #ifdef DATA_READY_LOOP
1268 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) );
1269 #elif CONNECTION_INPUT_LOOP
1277 LDAP_LOG( CONNECTION, ERR,
1278 "connection_read: conn %lu input error %d, closing.\n",
1279 c->c_connid, rc, 0 );
1281 Debug( LDAP_DEBUG_TRACE,
1282 "connection_read(%d): input error=%d id=%lu, closing.\n",
1283 s, rc, c->c_connid );
1285 /* connections_mutex and c_mutex are locked */
1286 connection_closing( c );
1287 connection_close( c );
1288 connection_return( c );
1289 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1293 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1294 slapd_set_read( s, 1 );
1297 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1298 slapd_set_write( s, 1 );
1301 connection_return( c );
1302 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1316 #ifdef LDAP_CONNECTIONLESS
1321 if ( conn->c_currentber == NULL &&
1322 ( conn->c_currentber = ber_alloc()) == NULL )
1325 LDAP_LOG( CONNECTION, ERR,
1326 "connection_input: conn %lu ber_alloc failed.\n",
1327 conn->c_connid, 0, 0 );
1329 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1336 #ifdef LDAP_CONNECTIONLESS
1337 if ( conn->c_is_udp ) {
1338 char peername[sizeof("IP=255.255.255.255:65336")];
1339 len = ber_int_sb_read(conn->c_sb, &peeraddr,
1340 sizeof(struct sockaddr));
1341 if (len != sizeof(struct sockaddr))
1343 sprintf( peername, "IP=%s:%d",
1344 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1345 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1346 Statslog( LDAP_DEBUG_STATS,
1347 "conn=%lu UDP request from %s (%s) accepted.\n",
1348 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1351 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1352 if ( tag != LDAP_TAG_MESSAGE ) {
1356 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1359 LDAP_LOG( CONNECTION, ERR,
1360 "connection_input: conn %lu ber_get_next failed, errno %d (%s).\n",
1361 conn->c_connid, err, sock_errstr(err) );
1363 Debug( LDAP_DEBUG_TRACE,
1364 "ber_get_next on fd %d failed errno=%d (%s)\n",
1365 sd, err, sock_errstr(err) );
1367 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1368 /* log, close and send error */
1369 ber_free( conn->c_currentber, 1 );
1370 conn->c_currentber = NULL;
1377 ber = conn->c_currentber;
1378 conn->c_currentber = NULL;
1380 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1381 /* log, close and send error */
1383 LDAP_LOG( CONNECTION, ERR,
1384 "connection_input: conn %lu ber_get_int returns 0x%lx.\n",
1385 conn->c_connid, tag, 0 );
1387 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0,
1394 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1395 /* log, close and send error */
1397 LDAP_LOG( CONNECTION, ERR,
1398 "connection_input: conn %lu ber_peek_tag returns 0x%lx.\n",
1399 conn->c_connid, tag, 0 );
1401 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0,
1409 #ifdef LDAP_CONNECTIONLESS
1410 if( conn->c_is_udp ) {
1411 if( tag == LBER_OCTETSTRING ) {
1412 ber_get_stringa( ber, &cdn );
1413 tag = ber_peek_tag(ber, &len);
1415 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1417 LDAP_LOG( CONNECTION, ERR,
1418 "connection_input: conn %lu invalid req for UDP 0x%lx.\n",
1419 conn->c_connid, tag, 0 );
1421 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0,
1429 if(tag == LDAP_REQ_BIND) {
1430 /* immediately abandon all exiting operations upon BIND */
1431 connection_abandon( conn );
1434 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1437 op->vrFilter = NULL;
1438 #ifdef LDAP_CONTROL_PAGEDRESULTS
1439 op->o_pagedresults_state = conn->c_pagedresults_state;
1441 #ifdef LDAP_CONNECTIONLESS
1442 op->o_peeraddr = peeraddr;
1444 ber_str2bv( cdn, 0, 1, &op->o_dn );
1445 op->o_protocol = LDAP_VERSION2;
1447 if (conn->c_is_udp) {
1450 op->o_res_ber = ber_alloc_t( LBER_USE_DER );
1451 if (op->o_res_ber == NULL)
1454 rc = ber_write(op->o_res_ber, (char *)&op->o_peeraddr, sizeof(struct sockaddr), 0);
1455 if (rc != sizeof(struct sockaddr)) {
1457 LDAP_LOG( CONNECTION, INFO,
1458 "connection_input: conn %lu ber_write failed\n",
1459 conn->c_connid, 0, 0 );
1461 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1466 if (conn->c_protocol == LDAP_VERSION2) {
1467 rc = ber_printf(op->o_res_ber, "{i{" /*}}*/, op->o_msgid);
1470 LDAP_LOG( CONNECTION, INFO,
1471 "connection_input: conn %lu put outer sequence failed\n",
1472 conn->c_connid, 0, 0 );
1474 Debug( LDAP_DEBUG_ANY, "ber_write failed\n", 0, 0, 0 );
1480 #endif /* LDAP_CONNECTIONLESS */
1482 if ( conn->c_conn_state == SLAP_C_BINDING
1483 || conn->c_conn_state == SLAP_C_CLOSING )
1486 LDAP_LOG( CONNECTION, INFO,
1487 "connection_input: conn %lu deferring operation\n",
1488 conn->c_connid, 0, 0 );
1490 Debug( LDAP_DEBUG_ANY, "deferring operation\n", 0, 0, 0 );
1492 conn->c_n_ops_pending++;
1493 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1496 conn->c_n_ops_executing++;
1497 connection_op_activate( conn, op );
1501 if ( conn->c_struct_state != SLAP_C_USED ) {
1502 /* connection must have got closed underneath us */
1506 assert( conn->c_struct_state == SLAP_C_USED );
1512 connection_resched( Connection *conn )
1516 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1519 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1521 /* us trylock to avoid possible deadlock */
1522 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1526 LDAP_LOG( CONNECTION, DETAIL1,
1527 "connection_resched: conn %lu reaquiring locks.\n",
1528 conn->c_connid, 0, 0 );
1530 Debug( LDAP_DEBUG_TRACE,
1531 "connection_resched: reaquiring locks conn=%lu sd=%d\n",
1532 conn->c_connid, sd, 0 );
1535 * reaquire locks in the right order...
1536 * this may allow another thread to close this connection,
1537 * so recheck state below.
1539 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1540 ldap_pvt_thread_mutex_lock( &connections_mutex );
1541 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1544 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1546 LDAP_LOG( CONNECTION, INFO,
1547 "connection_resched: conn %lu closed by other thread.\n",
1548 conn->c_connid, 0, 0 );
1550 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1551 "closed by other thread conn=%lu sd=%d\n",
1552 conn->c_connid, sd, 0 );
1556 LDAP_LOG( CONNECTION, DETAIL1,
1557 "connection_resched: conn %lu attempting closing.\n",
1558 conn->c_connid, 0, 0 );
1560 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1561 "attempting closing conn=%lu sd=%d\n",
1562 conn->c_connid, sd, 0 );
1564 connection_close( conn );
1567 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1571 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1572 /* other states need different handling */
1576 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1577 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1578 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1579 /* pending operations should not be marked for abandonment */
1580 assert(!op->o_abandon);
1582 conn->c_n_ops_pending--;
1583 conn->c_n_ops_executing++;
1585 connection_op_activate( conn, op );
1587 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1594 static int connection_op_activate( Connection *conn, Operation *op )
1598 ber_tag_t tag = op->o_tag;
1600 if(tag == LDAP_REQ_BIND) {
1601 conn->c_conn_state = SLAP_C_BINDING;
1604 arg = (struct co_arg *) ch_malloc( sizeof(struct co_arg) );
1605 arg->co_conn = conn;
1608 if (!arg->co_op->o_dn.bv_len) {
1609 arg->co_op->o_authz = conn->c_authz;
1610 arg->co_op->o_dn.bv_val = ch_strdup( conn->c_dn.bv_val ?
1611 conn->c_dn.bv_val : "" );
1612 arg->co_op->o_ndn.bv_val = ch_strdup( conn->c_ndn.bv_val ?
1613 conn->c_ndn.bv_val : "" );
1615 arg->co_op->o_authtype = conn->c_authtype;
1616 ber_dupbv( &arg->co_op->o_authmech, &conn->c_authmech );
1618 if (!arg->co_op->o_protocol) {
1619 arg->co_op->o_protocol = conn->c_protocol
1620 ? conn->c_protocol : LDAP_VERSION3;
1622 arg->co_op->o_connid = conn->c_connid;
1624 LDAP_STAILQ_INSERT_TAIL( &conn->c_ops, arg->co_op, o_next );
1626 status = ldap_pvt_thread_pool_submit( &connection_pool,
1627 connection_operation, (void *) arg );
1629 if ( status != 0 ) {
1631 LDAP_LOG( CONNECTION, ERR,
1632 "connection_op_activate: conn %lu thread pool submit failed.\n",
1633 conn->c_connid, 0, 0 );
1635 Debug( LDAP_DEBUG_ANY,
1636 "ldap_pvt_thread_pool_submit failed (%d)\n", status, 0, 0 );
1638 /* should move op to pending list */
1644 int connection_write(ber_socket_t s)
1648 assert( connections != NULL );
1650 ldap_pvt_thread_mutex_lock( &connections_mutex );
1652 c = connection_get( s );
1654 slapd_clr_write( s, 0);
1658 LDAP_LOG( CONNECTION, ERR,
1659 "connection_write: sock %ld no connection!\n", (long)s, 0, 0);
1661 Debug( LDAP_DEBUG_ANY,
1662 "connection_write(%ld): no connection!\n",
1666 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1673 LDAP_LOG( CONNECTION, DETAIL1,
1674 "connection_write conn %lu waking output.\n", c->c_connid, 0, 0 );
1676 Debug( LDAP_DEBUG_TRACE,
1677 "connection_write(%d): waking output for id=%lu\n",
1678 s, c->c_connid, 0 );
1680 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1682 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) )
1683 slapd_set_read( s, 1 );
1684 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) )
1685 slapd_set_write( s, 1 );
1686 connection_return( c );
1687 ldap_pvt_thread_mutex_unlock( &connections_mutex );