3 * Copyright 1998-2002 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 (%d/%d)\n",
401 Debug( LDAP_DEBUG_ANY,
402 "connection_init(%d): connection table full (%d/%d)\n",
405 ldap_pvt_thread_mutex_unlock( &connections_mutex );
413 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
414 c->c_authmech.bv_val = NULL;
415 c->c_authmech.bv_len = 0;
416 c->c_dn.bv_val = NULL;
418 c->c_ndn.bv_val = NULL;
422 c->c_listener = NULL;
423 c->c_peer_domain.bv_val = NULL;
424 c->c_peer_domain.bv_len = 0;
425 c->c_peer_name.bv_val = NULL;
426 c->c_peer_name.bv_len = 0;
428 LDAP_STAILQ_INIT(&c->c_ops);
429 LDAP_STAILQ_INIT(&c->c_pending_ops);
431 c->c_sasl_bind_mech.bv_val = NULL;
432 c->c_sasl_bind_mech.bv_len = 0;
433 c->c_sasl_context = NULL;
434 c->c_sasl_extra = NULL;
435 c->c_sasl_bindop = NULL;
437 c->c_sb = ber_sockbuf_alloc( );
440 ber_len_t max = sockbuf_max_incoming;
441 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
444 c->c_currentber = NULL;
446 /* should check status of thread calls */
447 ldap_pvt_thread_mutex_init( &c->c_mutex );
448 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
449 ldap_pvt_thread_cond_init( &c->c_write_cv );
451 c->c_struct_state = SLAP_C_UNUSED;
454 ldap_pvt_thread_mutex_lock( &c->c_mutex );
456 assert( c->c_struct_state == SLAP_C_UNUSED );
457 assert( c->c_authmech.bv_val == NULL );
458 assert( c->c_dn.bv_val == NULL );
459 assert( c->c_ndn.bv_val == NULL );
460 assert( c->c_groups == NULL );
461 assert( c->c_listener == NULL );
462 assert( c->c_peer_domain.bv_val == NULL );
463 assert( c->c_peer_name.bv_val == NULL );
464 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
465 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
466 assert( c->c_sasl_bind_mech.bv_val == NULL );
467 assert( c->c_sasl_context == NULL );
468 assert( c->c_sasl_extra == NULL );
469 assert( c->c_sasl_bindop == NULL );
470 assert( c->c_currentber == NULL );
472 c->c_listener = listener;
473 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
474 ber_str2bv( peername, 0, 1, &c->c_peer_name );
476 c->c_n_ops_received = 0;
477 c->c_n_ops_executing = 0;
478 c->c_n_ops_pending = 0;
479 c->c_n_ops_completed = 0;
485 /* set to zero until bind, implies LDAP_VERSION3 */
489 c->c_activitytime = c->c_starttime = slap_get_time();
491 if( global_idletimeout > 0 ) {
492 c->c_activitytime = c->c_starttime = slap_get_time();
496 #ifdef LDAP_CONNECTIONLESS
498 if( tls_udp_option == 2 ) {
501 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
502 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
504 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
505 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
506 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
507 LBER_SBIOD_LEVEL_PROVIDER, NULL );
512 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
513 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
515 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
516 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
520 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
521 INT_MAX, (void*)"ldap_" );
524 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
525 c /* non-NULL */ ) < 0 )
528 LDAP_LOG( CONNECTION, INFO,
529 "connection_init: conn %lu set nonblocking failed\n",
532 Debug( LDAP_DEBUG_ANY,
533 "connection_init(%d, %s): set nonblocking failed\n",
534 s, c->c_peer_name.bv_val, 0 );
538 id = c->c_connid = conn_nextid++;
540 c->c_conn_state = SLAP_C_INACTIVE;
541 c->c_struct_state = SLAP_C_USED;
543 c->c_ssf = c->c_transport_ssf = ssf;
547 if ( tls_udp_option == 1 ) {
549 c->c_needs_tls_accept = 1;
552 c->c_needs_tls_accept = 0;
557 slap_sasl_external( c, ssf, authid );
559 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
560 ldap_pvt_thread_mutex_unlock( &connections_mutex );
562 backend_connection_init(c);
567 void connection2anonymous( Connection *c )
569 assert( connections != NULL );
573 ber_len_t max = sockbuf_max_incoming;
574 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
577 if(c->c_authmech.bv_val != NULL ) {
578 free(c->c_authmech.bv_val);
579 c->c_authmech.bv_val = NULL;
581 c->c_authmech.bv_len = 0;
583 if(c->c_dn.bv_val != NULL) {
584 free(c->c_dn.bv_val);
585 c->c_dn.bv_val = NULL;
588 if(c->c_ndn.bv_val != NULL) {
589 free(c->c_ndn.bv_val);
590 c->c_ndn.bv_val = NULL;
594 c->c_authz_backend = NULL;
597 GroupAssertion *g, *n;
598 for (g = c->c_groups; g; g=n) {
607 connection_destroy( Connection *c )
609 /* note: connections_mutex should be locked by caller */
611 unsigned long connid;
613 assert( connections != NULL );
615 assert( c->c_struct_state != SLAP_C_UNUSED );
616 assert( c->c_conn_state != SLAP_C_INVALID );
617 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
619 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
620 connid = c->c_connid;
622 backend_connection_destroy(c);
627 c->c_activitytime = c->c_starttime = 0;
629 connection2anonymous( c );
630 c->c_listener = NULL;
632 if(c->c_peer_domain.bv_val != NULL) {
633 free(c->c_peer_domain.bv_val);
634 c->c_peer_domain.bv_val = NULL;
636 c->c_peer_domain.bv_len = 0;
637 if(c->c_peer_name.bv_val != NULL) {
640 * If peer was a domain socket, unlink. Mind you,
641 * they may be un-named. Should we leave this to
644 if (strncmp(c->c_peer_name.bv_val, "PATH=",
645 sizeof("PATH=") - 1) == 0) {
646 char *path = c->c_peer_name.bv_val
647 + sizeof("PATH=") - 1;
648 if (path[0] != '\0') {
652 #endif /* LDAP_PF_LOCAL */
654 free(c->c_peer_name.bv_val);
655 c->c_peer_name.bv_val = NULL;
657 c->c_peer_name.bv_len = 0;
659 c->c_sasl_bind_in_progress = 0;
660 if(c->c_sasl_bind_mech.bv_val != NULL) {
661 free(c->c_sasl_bind_mech.bv_val);
662 c->c_sasl_bind_mech.bv_val = NULL;
664 c->c_sasl_bind_mech.bv_len = 0;
666 slap_sasl_close( c );
668 if ( c->c_currentber != NULL ) {
669 ber_free( c->c_currentber, 1 );
670 c->c_currentber = NULL;
673 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
674 if ( sd != AC_SOCKET_INVALID ) {
675 slapd_remove( sd, 0 );
677 Statslog( LDAP_DEBUG_STATS,
678 "conn=%lu fd=%d closed\n",
679 connid, sd, 0, 0, 0 );
682 ber_sockbuf_free( c->c_sb );
684 c->c_sb = ber_sockbuf_alloc( );
687 ber_len_t max = sockbuf_max_incoming;
688 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
691 c->c_conn_state = SLAP_C_INVALID;
692 c->c_struct_state = SLAP_C_UNUSED;
695 int connection_state_closing( Connection *c )
697 /* c_mutex must be locked by caller */
701 assert( c->c_struct_state == SLAP_C_USED );
703 state = c->c_conn_state;
705 assert( state != SLAP_C_INVALID );
707 return state == SLAP_C_CLOSING;
710 static void connection_abandon( Connection *c )
712 /* c_mutex must be locked by caller */
716 LDAP_STAILQ_FOREACH(o, &c->c_ops, o_next) {
720 /* remove pending operations */
721 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
722 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
723 LDAP_STAILQ_NEXT(o, o_next) = NULL;
728 void connection_closing( Connection *c )
730 assert( connections != NULL );
732 assert( c->c_struct_state == SLAP_C_USED );
733 assert( c->c_conn_state != SLAP_C_INVALID );
735 /* c_mutex must be locked by caller */
737 if( c->c_conn_state != SLAP_C_CLOSING ) {
740 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
742 LDAP_LOG( CONNECTION, DETAIL1,
743 "connection_closing: conn %lu readying socket %d for close.\n",
744 c->c_connid, sd, 0 );
746 Debug( LDAP_DEBUG_TRACE,
747 "connection_closing: readying conn=%lu sd=%d for close\n",
748 c->c_connid, sd, 0 );
750 /* update state to closing */
751 c->c_conn_state = SLAP_C_CLOSING;
753 /* don't listen on this port anymore */
754 slapd_clr_read( sd, 1 );
756 /* abandon active operations */
757 connection_abandon( c );
759 /* wake write blocked operations */
760 slapd_clr_write( sd, 1 );
761 ldap_pvt_thread_cond_signal( &c->c_write_cv );
765 static void connection_close( Connection *c )
769 assert( connections != NULL );
771 assert( c->c_struct_state == SLAP_C_USED );
772 assert( c->c_conn_state == SLAP_C_CLOSING );
774 /* note: connections_mutex and c_mutex should be locked by caller */
776 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
777 if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
779 LDAP_LOG( CONNECTION, DETAIL1,
780 "connection_close: conn %lu deferring sd %d\n",
781 c->c_connid, sd, 0 );
783 Debug( LDAP_DEBUG_TRACE,
784 "connection_close: deferring conn=%lu sd=%d\n",
785 c->c_connid, sd, 0 );
791 LDAP_LOG( CONNECTION, RESULTS,
792 "connection_close: conn %lu sd %d\n", c->c_connid, sd, 0 );
794 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
795 c->c_connid, sd, 0 );
797 connection_destroy( c );
800 unsigned long connections_nextid(void)
803 assert( connections != NULL );
805 ldap_pvt_thread_mutex_lock( &connections_mutex );
809 ldap_pvt_thread_mutex_unlock( &connections_mutex );
814 Connection* connection_first( ber_socket_t *index )
816 assert( connections != NULL );
817 assert( index != NULL );
819 ldap_pvt_thread_mutex_lock( &connections_mutex );
823 return connection_next(NULL, index);
826 Connection* connection_next( Connection *c, ber_socket_t *index )
828 assert( connections != NULL );
829 assert( index != NULL );
830 assert( *index <= dtblsize );
833 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
838 for(; *index < dtblsize; (*index)++) {
839 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
840 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
848 if( connections[*index].c_struct_state == SLAP_C_USED ) {
849 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
850 c = &connections[(*index)++];
854 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
855 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
859 ldap_pvt_thread_mutex_lock( &c->c_mutex );
865 void connection_done( Connection *c )
867 assert( connections != NULL );
870 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
873 ldap_pvt_thread_mutex_unlock( &connections_mutex );
877 * connection_activity - handle the request operation op on connection
878 * conn. This routine figures out what kind of operation it is and
879 * calls the appropriate stub to handle it.
883 #define INCR_OP(var,index) \
885 ldap_pvt_thread_mutex_lock( &num_ops_mutex ); \
887 ldap_pvt_thread_mutex_unlock( &num_ops_mutex ); \
889 #else /* !SLAPD_MONITOR */
890 #define INCR_OP(var,index)
891 #endif /* !SLAPD_MONITOR */
894 connection_operation( void *ctx, void *arg_v )
897 struct co_arg *arg = arg_v;
898 ber_tag_t tag = arg->co_op->o_tag;
900 ber_tag_t oldtag = tag;
901 #endif /* SLAPD_MONITOR */
902 Connection *conn = arg->co_conn;
904 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
906 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
908 arg->co_op->o_threadctx = ctx;
910 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
912 LDAP_LOG( CONNECTION, ERR,
913 "connection_operation: conn %lu SASL bind in progress (tag=%ld).\n",
914 conn->c_connid, (long)tag, 0 );
916 Debug( LDAP_DEBUG_ANY, "connection_operation: "
917 "error: SASL bind in progress (tag=%ld).\n",
920 send_ldap_result( conn, arg->co_op,
921 rc = LDAP_OPERATIONS_ERROR,
922 NULL, "SASL bind in progress", NULL, NULL );
923 goto operations_error;
928 INCR_OP(num_ops_initiated_, SLAP_OP_BIND);
929 rc = do_bind( conn, arg->co_op );
932 case LDAP_REQ_UNBIND:
933 INCR_OP(num_ops_initiated_, SLAP_OP_UNBIND);
934 rc = do_unbind( conn, arg->co_op );
938 INCR_OP(num_ops_initiated_, SLAP_OP_ADD);
939 rc = do_add( conn, arg->co_op );
942 case LDAP_REQ_DELETE:
943 INCR_OP(num_ops_initiated_, SLAP_OP_DELETE);
944 rc = do_delete( conn, arg->co_op );
947 case LDAP_REQ_MODRDN:
948 INCR_OP(num_ops_initiated_, SLAP_OP_MODRDN);
949 rc = do_modrdn( conn, arg->co_op );
952 case LDAP_REQ_MODIFY:
953 INCR_OP(num_ops_initiated_, SLAP_OP_MODIFY);
954 rc = do_modify( conn, arg->co_op );
957 case LDAP_REQ_COMPARE:
958 INCR_OP(num_ops_initiated_, SLAP_OP_COMPARE);
959 rc = do_compare( conn, arg->co_op );
962 case LDAP_REQ_SEARCH:
963 INCR_OP(num_ops_initiated_, SLAP_OP_SEARCH);
964 rc = do_search( conn, arg->co_op );
967 case LDAP_REQ_ABANDON:
968 INCR_OP(num_ops_initiated_, SLAP_OP_ABANDON);
969 rc = do_abandon( conn, arg->co_op );
972 case LDAP_REQ_EXTENDED:
973 INCR_OP(num_ops_initiated_, SLAP_OP_EXTENDED);
974 rc = do_extended( conn, arg->co_op );
979 LDAP_LOG( CONNECTION, INFO,
980 "connection_operation: conn %lu unknown LDAP request 0x%lx\n",
981 conn->c_connid, tag, 0 );
983 Debug( LDAP_DEBUG_ANY, "unknown LDAP request 0x%lx\n",
986 arg->co_op->o_tag = LBER_ERROR;
987 send_ldap_disconnect( conn, arg->co_op,
988 LDAP_PROTOCOL_ERROR, "unknown LDAP request" );
995 #endif /* SLAPD_MONITOR */
996 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
999 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
1000 num_ops_completed++;
1001 #ifdef SLAPD_MONITOR
1004 num_ops_completed_[SLAP_OP_BIND]++;
1006 case LDAP_REQ_UNBIND:
1007 num_ops_completed_[SLAP_OP_UNBIND]++;
1010 num_ops_completed_[SLAP_OP_ADD]++;
1012 case LDAP_REQ_DELETE:
1013 num_ops_completed_[SLAP_OP_DELETE]++;
1015 case LDAP_REQ_MODRDN:
1016 num_ops_completed_[SLAP_OP_MODRDN]++;
1018 case LDAP_REQ_MODIFY:
1019 num_ops_completed_[SLAP_OP_MODIFY]++;
1021 case LDAP_REQ_COMPARE:
1022 num_ops_completed_[SLAP_OP_COMPARE]++;
1024 case LDAP_REQ_SEARCH:
1025 num_ops_completed_[SLAP_OP_SEARCH]++;
1027 case LDAP_REQ_ABANDON:
1028 num_ops_completed_[SLAP_OP_ABANDON]++;
1030 case LDAP_REQ_EXTENDED:
1031 num_ops_completed_[SLAP_OP_EXTENDED]++;
1034 #endif /* SLAPD_MONITOR */
1035 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
1037 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1039 conn->c_n_ops_executing--;
1040 conn->c_n_ops_completed++;
1042 LDAP_STAILQ_REMOVE( &conn->c_ops, arg->co_op, slap_op, o_next);
1043 LDAP_STAILQ_NEXT(arg->co_op, o_next) = NULL;
1044 #ifdef LDAP_CLIENT_UPDATE
1045 if ( !( arg->co_op->o_clientupdate_type & SLAP_LCUP_PERSIST ) ) {
1046 slap_op_free( arg->co_op );
1048 #endif /* LDAP_CLIENT_UPDATE */
1050 arg->co_conn = NULL;
1051 free( (char *) arg );
1056 case LDAP_REQ_UNBIND:
1057 /* c_mutex is locked */
1058 connection_closing( conn );
1062 conn->c_sasl_bind_in_progress =
1063 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
1065 if( conn->c_conn_state == SLAP_C_BINDING) {
1066 conn->c_conn_state = SLAP_C_ACTIVE;
1070 connection_resched( conn );
1072 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1077 int connection_read(ber_socket_t s)
1082 assert( connections != NULL );
1084 ldap_pvt_thread_mutex_lock( &connections_mutex );
1086 /* get (locked) connection */
1087 c = connection_get( s );
1091 LDAP_LOG( CONNECTION, INFO,
1092 "connection_read: sock %ld no connection\n", (long)s, 0, 0 );
1094 Debug( LDAP_DEBUG_ANY,
1095 "connection_read(%ld): no connection!\n",
1100 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1106 if( c->c_conn_state == SLAP_C_CLOSING ) {
1108 LDAP_LOG( CONNECTION, INFO,
1109 "connection_read: conn %lu connection closing, ignoring input\n",
1110 c->c_connid, 0, 0 );
1112 Debug( LDAP_DEBUG_TRACE,
1113 "connection_read(%d): closing, ignoring input for id=%lu\n",
1114 s, c->c_connid, 0 );
1116 connection_return( c );
1117 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1122 LDAP_LOG( CONNECTION, DETAIL1,
1123 "connection_read: conn %lu checking for input.\n",
1124 c->c_connid, 0, 0 );
1126 Debug( LDAP_DEBUG_TRACE,
1127 "connection_read(%d): checking for input on id=%lu\n",
1128 s, c->c_connid, 0 );
1132 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1133 rc = ldap_pvt_tls_accept( c->c_sb, NULL );
1135 #if 0 /* required by next #if 0 */
1141 LDAP_LOG( CONNECTION, ERR,
1142 "connection_read: conn %lu TLS accept error, error %d\n",
1143 c->c_connid, rc, 0 );
1145 Debug( LDAP_DEBUG_TRACE,
1146 "connection_read(%d): TLS accept error "
1147 "error=%d id=%lu, closing\n",
1148 s, rc, c->c_connid );
1150 c->c_needs_tls_accept = 0;
1151 /* connections_mutex and c_mutex are locked */
1152 connection_closing( c );
1155 /* Drain input before close, to allow SSL error codes
1156 * to propagate to client. */
1162 rc = select(s+1, &rfd, NULL, NULL, &tv);
1164 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN, NULL);
1168 connection_close( c );
1170 } else if ( rc == 0 ) {
1172 struct berval authid = { 0, NULL };
1174 c->c_needs_tls_accept = 0;
1176 /* we need to let SASL know */
1177 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1179 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1180 if( c->c_tls_ssf > c->c_ssf ) {
1181 c->c_ssf = c->c_tls_ssf;
1184 rc = dnX509peerNormalize( ssl, &authid );
1185 if ( rc != LDAP_SUCCESS ) {
1187 LDAP_LOG( CONNECTION, INFO,
1188 "connection_read: conn %lu unable to get TLS client DN, "
1189 "error %d\n", c->c_connid, rc, 0 );
1191 Debug( LDAP_DEBUG_TRACE,
1192 "connection_read(%d): unable to get TLS client DN "
1193 "error=%d id=%lu\n",
1194 s, rc, c->c_connid );
1197 slap_sasl_external( c, c->c_tls_ssf, authid.bv_val );
1198 if ( authid.bv_val ) free( authid.bv_val );
1201 /* if success and data is ready, fall thru to data input loop */
1203 !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1205 connection_return( c );
1206 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1212 #ifdef HAVE_CYRUS_SASL
1213 if ( c->c_sasl_layers ) {
1214 c->c_sasl_layers = 0;
1216 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_context );
1218 if( rc != LDAP_SUCCESS ) {
1220 LDAP_LOG( CONNECTION, ERR,
1221 "connection_read: conn %lu SASL install error %d, closing\n",
1222 c->c_connid, rc, 0 );
1224 Debug( LDAP_DEBUG_TRACE,
1225 "connection_read(%d): SASL install error "
1226 "error=%d id=%lu, closing\n",
1227 s, rc, c->c_connid );
1229 /* connections_mutex and c_mutex are locked */
1230 connection_closing( c );
1231 connection_close( c );
1232 connection_return( c );
1233 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1239 #define CONNECTION_INPUT_LOOP 1
1241 #ifdef DATA_READY_LOOP
1242 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_DATA_READY, NULL ) )
1243 #elif CONNECTION_INPUT_LOOP
1247 /* How do we do this without getting into a busy loop ? */
1248 rc = connection_input( c );
1253 LDAP_LOG( CONNECTION, ERR,
1254 "connection_read: conn %lu input error %d, closing.\n",
1255 c->c_connid, rc, 0 );
1257 Debug( LDAP_DEBUG_TRACE,
1258 "connection_read(%d): input error=%d id=%lu, closing.\n",
1259 s, rc, c->c_connid );
1261 /* connections_mutex and c_mutex are locked */
1262 connection_closing( c );
1263 connection_close( c );
1264 connection_return( c );
1265 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1269 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1270 slapd_set_read( s, 1 );
1273 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1274 slapd_set_write( s, 1 );
1277 connection_return( c );
1278 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1292 #ifdef LDAP_CONNECTIONLESS
1297 if ( conn->c_currentber == NULL &&
1298 ( conn->c_currentber = ber_alloc()) == NULL )
1301 LDAP_LOG( CONNECTION, ERR,
1302 "connection_input: conn %lu ber_alloc failed.\n",
1303 conn->c_connid, 0, 0 );
1305 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1312 #ifdef LDAP_CONNECTIONLESS
1313 if ( conn->c_is_udp ) {
1314 char peername[sizeof("IP=255.255.255.255:65336")];
1315 len = ber_int_sb_read(conn->c_sb, &peeraddr,
1316 sizeof(struct sockaddr));
1317 if (len != sizeof(struct sockaddr))
1319 sprintf( peername, "IP=%s:%d",
1320 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1321 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1322 Statslog( LDAP_DEBUG_STATS,
1323 "conn=%lu UDP request from %s (%s) accepted.\n",
1324 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1327 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1328 if ( tag != LDAP_TAG_MESSAGE ) {
1332 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1335 LDAP_LOG( CONNECTION, ERR,
1336 "connection_input: conn %lu ber_get_next failed, errno %d (%s).\n",
1337 conn->c_connid, err, sock_errstr(err) );
1339 Debug( LDAP_DEBUG_TRACE,
1340 "ber_get_next on fd %d failed errno=%d (%s)\n",
1341 sd, err, sock_errstr(err) );
1343 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1344 /* log, close and send error */
1345 ber_free( conn->c_currentber, 1 );
1346 conn->c_currentber = NULL;
1353 ber = conn->c_currentber;
1354 conn->c_currentber = NULL;
1356 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1357 /* log, close and send error */
1359 LDAP_LOG( CONNECTION, ERR,
1360 "connection_input: conn %lu ber_get_int returns 0x%lx.\n",
1361 conn->c_connid, tag, 0 );
1363 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0,
1370 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1371 /* log, close and send error */
1373 LDAP_LOG( CONNECTION, ERR,
1374 "connection_input: conn %lu ber_peek_tag returns 0x%lx.\n",
1375 conn->c_connid, tag, 0 );
1377 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0,
1385 #ifdef LDAP_CONNECTIONLESS
1386 if( conn->c_is_udp ) {
1387 if( tag == LBER_OCTETSTRING ) {
1388 ber_get_stringa( ber, &cdn );
1389 tag = ber_peek_tag(ber, &len);
1391 if( tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH ) {
1393 LDAP_LOG( CONNECTION, ERR,
1394 "connection_input: conn %lu invalid req for UDP 0x%lx.\n",
1395 conn->c_connid, tag, 0 );
1397 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0,
1405 if(tag == LDAP_REQ_BIND) {
1406 /* immediately abandon all exiting operations upon BIND */
1407 connection_abandon( conn );
1410 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1413 op->vrFilter = NULL;
1414 op->o_pagedresults_state = conn->c_pagedresults_state;
1415 #ifdef LDAP_CONNECTIONLESS
1416 op->o_peeraddr = peeraddr;
1418 ber_str2bv( cdn, 0, 1, &op->o_dn );
1419 op->o_protocol = LDAP_VERSION2;
1423 if ( conn->c_conn_state == SLAP_C_BINDING
1424 || conn->c_conn_state == SLAP_C_CLOSING )
1427 LDAP_LOG( CONNECTION, INFO,
1428 "connection_input: conn %lu deferring operation\n",
1429 conn->c_connid, 0, 0 );
1431 Debug( LDAP_DEBUG_ANY, "deferring operation\n", 0, 0, 0 );
1433 conn->c_n_ops_pending++;
1434 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1437 conn->c_n_ops_executing++;
1438 connection_op_activate( conn, op );
1442 if ( conn->c_struct_state != SLAP_C_USED ) {
1443 /* connection must have got closed underneath us */
1447 assert( conn->c_struct_state == SLAP_C_USED );
1453 connection_resched( Connection *conn )
1457 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1460 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1462 /* us trylock to avoid possible deadlock */
1463 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1467 LDAP_LOG( CONNECTION, DETAIL1,
1468 "connection_resched: conn %lu reaquiring locks.\n",
1469 conn->c_connid, 0, 0 );
1471 Debug( LDAP_DEBUG_TRACE,
1472 "connection_resched: reaquiring locks conn=%lu sd=%d\n",
1473 conn->c_connid, sd, 0 );
1476 * reaquire locks in the right order...
1477 * this may allow another thread to close this connection,
1478 * so recheck state below.
1480 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1481 ldap_pvt_thread_mutex_lock( &connections_mutex );
1482 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1485 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1487 LDAP_LOG( CONNECTION, INFO,
1488 "connection_resched: conn %lu closed by other thread.\n",
1489 conn->c_connid, 0, 0 );
1491 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1492 "closed by other thread conn=%lu sd=%d\n",
1493 conn->c_connid, sd, 0 );
1497 LDAP_LOG( CONNECTION, DETAIL1,
1498 "connection_resched: conn %lu attempting closing.\n",
1499 conn->c_connid, 0, 0 );
1501 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1502 "attempting closing conn=%lu sd=%d\n",
1503 conn->c_connid, sd, 0 );
1505 connection_close( conn );
1508 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1512 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1513 /* other states need different handling */
1517 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1518 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1519 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1520 /* pending operations should not be marked for abandonment */
1521 assert(!op->o_abandon);
1523 conn->c_n_ops_pending--;
1524 conn->c_n_ops_executing++;
1526 connection_op_activate( conn, op );
1528 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1535 static int connection_op_activate( Connection *conn, Operation *op )
1539 ber_tag_t tag = op->o_tag;
1541 if(tag == LDAP_REQ_BIND) {
1542 conn->c_conn_state = SLAP_C_BINDING;
1545 arg = (struct co_arg *) ch_malloc( sizeof(struct co_arg) );
1546 arg->co_conn = conn;
1549 if (!arg->co_op->o_dn.bv_len) {
1550 arg->co_op->o_authz = conn->c_authz;
1551 arg->co_op->o_dn.bv_val = ch_strdup( conn->c_dn.bv_val ?
1552 conn->c_dn.bv_val : "" );
1553 arg->co_op->o_ndn.bv_val = ch_strdup( conn->c_ndn.bv_val ?
1554 conn->c_ndn.bv_val : "" );
1556 arg->co_op->o_authtype = conn->c_authtype;
1557 ber_dupbv( &arg->co_op->o_authmech, &conn->c_authmech );
1559 if (!arg->co_op->o_protocol) {
1560 arg->co_op->o_protocol = conn->c_protocol
1561 ? conn->c_protocol : LDAP_VERSION3;
1563 arg->co_op->o_connid = conn->c_connid;
1565 LDAP_STAILQ_INSERT_TAIL( &conn->c_ops, arg->co_op, o_next );
1567 status = ldap_pvt_thread_pool_submit( &connection_pool,
1568 connection_operation, (void *) arg );
1570 if ( status != 0 ) {
1572 LDAP_LOG( CONNECTION, ERR,
1573 "connection_op_activate: conn %lu thread pool submit failed.\n",
1574 conn->c_connid, 0, 0 );
1576 Debug( LDAP_DEBUG_ANY,
1577 "ldap_pvt_thread_pool_submit failed (%d)\n", status, 0, 0 );
1579 /* should move op to pending list */
1585 int connection_write(ber_socket_t s)
1589 assert( connections != NULL );
1591 ldap_pvt_thread_mutex_lock( &connections_mutex );
1593 c = connection_get( s );
1595 slapd_clr_write( s, 0);
1599 LDAP_LOG( CONNECTION, ERR,
1600 "connection_write: sock %ld no connection!\n", (long)s, 0, 0);
1602 Debug( LDAP_DEBUG_ANY,
1603 "connection_write(%ld): no connection!\n",
1607 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1614 LDAP_LOG( CONNECTION, DETAIL1,
1615 "connection_write conn %lu waking output.\n", c->c_connid, 0, 0 );
1617 Debug( LDAP_DEBUG_TRACE,
1618 "connection_write(%d): waking output for id=%lu\n",
1619 s, c->c_connid, 0 );
1621 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1623 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) )
1624 slapd_set_read( s, 1 );
1625 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) )
1626 slapd_set_write( s, 1 );
1627 connection_return( c );
1628 ldap_pvt_thread_mutex_unlock( &connections_mutex );