3 * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
12 #include <ac/socket.h>
14 #include <ac/signal.h>
15 #include <ac/string.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 );
69 * Initialize connection management infrastructure.
71 int connections_init(void)
73 assert( connections == NULL );
75 if( connections != NULL) {
77 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
78 "connections_init: already initialized.\n" ));
80 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
86 /* should check return of every call */
87 ldap_pvt_thread_mutex_init( &connections_mutex );
89 connections = (Connection *) calloc( dtblsize, sizeof(Connection) );
91 if( connections == NULL ) {
93 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
94 "connections_init: allocation (%d * %ld) of connection array failed\n",
95 dtblsize, (long) sizeof(Connection) ));
97 Debug( LDAP_DEBUG_ANY,
98 "connections_init: allocation (%d*%ld) of connection array failed\n",
99 dtblsize, (long) sizeof(Connection), 0 );
104 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
105 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
108 * per entry initialization of the Connection array initialization
109 * will be done by connection_init()
116 * Destroy connection management infrastructure.
118 int connections_destroy(void)
122 /* should check return of every call */
124 if( connections == NULL) {
126 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
127 "connections_destroy: nothing to destroy.\n"));
129 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
135 for ( i = 0; i < dtblsize; i++ ) {
136 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
137 ber_sockbuf_free( connections[i].c_sb );
138 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
139 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
140 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
147 ldap_pvt_thread_mutex_destroy( &connections_mutex );
152 * shutdown all connections
154 int connections_shutdown(void)
158 ldap_pvt_thread_mutex_lock( &connections_mutex );
160 for ( i = 0; i < dtblsize; i++ ) {
161 if( connections[i].c_struct_state != SLAP_C_USED ) {
165 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
167 /* connections_mutex and c_mutex are locked */
168 connection_closing( &connections[i] );
169 connection_close( &connections[i] );
171 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
174 ldap_pvt_thread_mutex_unlock( &connections_mutex );
180 * Timeout idle connections.
182 int connections_timeout_idle(time_t now)
188 for( c = connection_first( &connindex );
190 c = connection_next( c, &connindex ) )
192 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
194 connection_closing( c );
195 connection_close( c );
199 connection_done( c );
204 static Connection* connection_get( ber_socket_t s )
206 /* connections_mutex should be locked by caller */
211 LDAP_LOG(( "connection", LDAP_LEVEL_ENTRY,
212 "connection_get: socket %ld\n", (long)s ));
214 Debug( LDAP_DEBUG_ARGS,
215 "connection_get(%ld)\n",
219 assert( connections != NULL );
221 if(s == AC_SOCKET_INVALID) {
228 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
235 for(i=0; i<dtblsize; i++) {
236 ber_sockbuf_ctrl( connections[i].c_sb,
237 LBER_SB_OPT_GET_FD, &sd );
239 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
240 assert( connections[i].c_conn_state == SLAP_C_INVALID );
241 assert( connections[i].c_sb == 0 );
245 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
246 assert( connections[i].c_conn_state == SLAP_C_INVALID );
247 assert( sd == AC_SOCKET_INVALID );
251 /* state can actually change from used -> unused by resched,
252 * so don't assert details here.
266 ldap_pvt_thread_mutex_lock( &c->c_mutex );
268 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
269 if( c->c_struct_state != SLAP_C_USED ) {
270 /* connection must have been closed due to resched */
272 assert( c->c_conn_state == SLAP_C_INVALID );
273 assert( sd == AC_SOCKET_INVALID );
276 LDAP_LOG(( "connection", LDAP_LEVEL_ARGS,
277 "connection_get: connection %d not used\n", s ));
279 Debug( LDAP_DEBUG_TRACE,
280 "connection_get(%d): connection not used\n",
284 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
289 LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
290 "connection_get: get for %d got connid %ld\n",s, c->c_connid ));
292 Debug( LDAP_DEBUG_TRACE,
293 "connection_get(%d): got connid=%ld\n",
299 assert( c->c_struct_state == SLAP_C_USED );
300 assert( c->c_conn_state != SLAP_C_INVALID );
301 assert( sd != AC_SOCKET_INVALID );
303 c->c_activitytime = slap_get_time();
309 static void connection_return( Connection *c )
311 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
314 long connection_init(
318 const char* peername,
319 const char* sockname,
327 assert( connections != NULL );
329 assert( dnsname != NULL );
330 assert( peername != NULL );
331 assert( sockname != NULL );
334 assert( tls_udp_option != 1 );
337 if( s == AC_SOCKET_INVALID ) {
339 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
340 "connection_init: init of socket %ld invalid.\n", (long)s ));
342 Debug( LDAP_DEBUG_ANY,
343 "connection_init(%ld): invalid.\n",
351 assert( s < dtblsize );
354 ldap_pvt_thread_mutex_lock( &connections_mutex );
365 for( i=0; i < dtblsize; i++) {
368 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
369 assert( connections[i].c_sb == 0 );
374 sd = AC_SOCKET_INVALID;
375 if (connections[i].c_sb != NULL)
376 ber_sockbuf_ctrl( connections[i].c_sb, LBER_SB_OPT_GET_FD, &sd );
378 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
379 assert( sd == AC_SOCKET_INVALID );
384 assert( connections[i].c_struct_state == SLAP_C_USED );
385 assert( connections[i].c_conn_state != SLAP_C_INVALID );
386 assert( sd != AC_SOCKET_INVALID );
391 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
392 "connection_init: skt %d connection table full (%d/%d)\n",
395 Debug( LDAP_DEBUG_ANY,
396 "connection_init(%d): connection table full (%d/%d)\n",
399 ldap_pvt_thread_mutex_unlock( &connections_mutex );
407 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
408 c->c_authmech = NULL;
412 c->c_listener_url = NULL;
413 c->c_peer_domain = NULL;
414 c->c_peer_name = NULL;
415 c->c_sock_name = NULL;
418 c->c_pending_ops = NULL;
420 c->c_sasl_bind_mech = NULL;
421 c->c_sasl_context = NULL;
422 c->c_sasl_extra = NULL;
424 c->c_sb = ber_sockbuf_alloc( );
427 ber_len_t max = sockbuf_max_incoming;
428 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
431 c->c_currentber = NULL;
433 /* should check status of thread calls */
434 ldap_pvt_thread_mutex_init( &c->c_mutex );
435 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
436 ldap_pvt_thread_cond_init( &c->c_write_cv );
438 c->c_struct_state = SLAP_C_UNUSED;
441 ldap_pvt_thread_mutex_lock( &c->c_mutex );
443 assert( c->c_struct_state == SLAP_C_UNUSED );
444 assert( c->c_authmech == NULL );
445 assert( c->c_dn == NULL );
446 assert( c->c_cdn == NULL );
447 assert( c->c_listener_url == NULL );
448 assert( c->c_peer_domain == NULL );
449 assert( c->c_peer_name == NULL );
450 assert( c->c_sock_name == NULL );
451 assert( c->c_ops == NULL );
452 assert( c->c_pending_ops == NULL );
453 assert( c->c_sasl_bind_mech == NULL );
454 assert( c->c_sasl_context == NULL );
455 assert( c->c_sasl_extra == NULL );
456 assert( c->c_currentber == NULL );
458 c->c_listener_url = ch_strdup( url );
459 c->c_peer_domain = ch_strdup( dnsname );
460 c->c_peer_name = ch_strdup( peername );
461 c->c_sock_name = ch_strdup( sockname );
463 c->c_n_ops_received = 0;
464 c->c_n_ops_executing = 0;
465 c->c_n_ops_pending = 0;
466 c->c_n_ops_completed = 0;
472 /* set to zero until bind, implies LDAP_VERSION3 */
475 c->c_activitytime = c->c_starttime = slap_get_time();
477 #ifdef LDAP_CONNECTIONLESS
479 if (tls_udp_option == 2)
483 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
484 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
486 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
487 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
492 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
493 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
495 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
496 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
498 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
499 LBER_SBIOD_LEVEL_PROVIDER, NULL );
502 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
503 INT_MAX, (void*)"ldap_" );
506 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
507 c /* non-NULL */ ) < 0 )
510 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
511 "connection_init: conn %d set nonblocking failed\n",
514 Debug( LDAP_DEBUG_ANY,
515 "connection_init(%d, %s): set nonblocking failed\n",
516 s, c->c_peer_name, 0 );
520 id = c->c_connid = conn_nextid++;
522 c->c_conn_state = SLAP_C_INACTIVE;
523 c->c_struct_state = SLAP_C_USED;
525 c->c_ssf = c->c_transport_ssf = ssf;
529 if ( tls_udp_option == 1 ) {
531 c->c_needs_tls_accept = 1;
534 c->c_needs_tls_accept = 0;
539 slap_sasl_external( c, ssf, authid );
541 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
542 ldap_pvt_thread_mutex_unlock( &connections_mutex );
544 backend_connection_init(c);
549 void connection2anonymous( Connection *c )
551 assert( connections != NULL );
555 ber_len_t max = sockbuf_max_incoming;
556 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
559 if(c->c_authmech != NULL ) {
561 c->c_authmech = NULL;
564 if(c->c_dn != NULL) {
569 if(c->c_cdn != NULL) {
574 c->c_authc_backend = NULL;
575 c->c_authz_backend = NULL;
579 connection_destroy( Connection *c )
581 /* note: connections_mutex should be locked by caller */
584 assert( connections != NULL );
586 assert( c->c_struct_state != SLAP_C_UNUSED );
587 assert( c->c_conn_state != SLAP_C_INVALID );
588 assert( c->c_ops == NULL );
590 backend_connection_destroy(c);
595 c->c_activitytime = c->c_starttime = 0;
597 connection2anonymous( c );
599 if(c->c_listener_url != NULL) {
600 free(c->c_listener_url);
601 c->c_listener_url = NULL;
604 if(c->c_peer_domain != NULL) {
605 free(c->c_peer_domain);
606 c->c_peer_domain = NULL;
608 if(c->c_peer_name != NULL) {
611 * If peer was a domain socket, unlink. Mind you,
612 * they may be un-named. Should we leave this to
615 if (strncmp(c->c_peer_name, "PATH=", 5) == 0) {
616 char *path = c->c_peer_name + 5;
621 #endif /* LDAP_PF_LOCAL */
623 free(c->c_peer_name);
624 c->c_peer_name = NULL;
626 if(c->c_sock_name != NULL) {
627 free(c->c_sock_name);
628 c->c_sock_name = NULL;
631 c->c_sasl_bind_in_progress = 0;
632 if(c->c_sasl_bind_mech != NULL) {
633 free(c->c_sasl_bind_mech);
634 c->c_sasl_bind_mech = NULL;
637 slap_sasl_close( c );
639 if ( c->c_currentber != NULL ) {
640 ber_free( c->c_currentber, 1 );
641 c->c_currentber = NULL;
644 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
645 if ( sd != AC_SOCKET_INVALID ) {
646 slapd_remove( sd, 0 );
648 Statslog( LDAP_DEBUG_STATS,
649 "conn=%ld fd=%d closed\n",
650 c->c_connid, sd, 0, 0, 0 );
653 ber_sockbuf_free( c->c_sb );
655 c->c_sb = ber_sockbuf_alloc( );
658 ber_len_t max = sockbuf_max_incoming;
659 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
662 c->c_conn_state = SLAP_C_INVALID;
663 c->c_struct_state = SLAP_C_UNUSED;
666 int connection_state_closing( Connection *c )
668 /* c_mutex must be locked by caller */
672 assert( c->c_struct_state == SLAP_C_USED );
674 state = c->c_conn_state;
676 assert( state != SLAP_C_INVALID );
678 return state == SLAP_C_CLOSING;
681 static void connection_abandon( Connection *c )
683 /* c_mutex must be locked by caller */
687 for( o = c->c_ops; o != NULL; o = o->o_next ) {
688 ldap_pvt_thread_mutex_lock( &o->o_abandonmutex );
690 ldap_pvt_thread_mutex_unlock( &o->o_abandonmutex );
693 /* remove pending operations */
694 for( o = slap_op_pop( &c->c_pending_ops );
696 o = slap_op_pop( &c->c_pending_ops ) )
702 void connection_closing( Connection *c )
704 assert( connections != NULL );
706 assert( c->c_struct_state == SLAP_C_USED );
707 assert( c->c_conn_state != SLAP_C_INVALID );
709 /* c_mutex must be locked by caller */
711 if( c->c_conn_state != SLAP_C_CLOSING ) {
714 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
716 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
717 "connection_closing: conn %d readying socket %d for close.\n",
720 Debug( LDAP_DEBUG_TRACE,
721 "connection_closing: readying conn=%ld sd=%d for close\n",
722 c->c_connid, sd, 0 );
724 /* update state to closing */
725 c->c_conn_state = SLAP_C_CLOSING;
727 /* don't listen on this port anymore */
728 slapd_clr_read( sd, 1 );
730 /* abandon active operations */
731 connection_abandon( c );
733 /* wake write blocked operations */
734 slapd_clr_write( sd, 1 );
735 ldap_pvt_thread_cond_signal( &c->c_write_cv );
739 static void connection_close( Connection *c )
743 assert( connections != NULL );
745 assert( c->c_struct_state == SLAP_C_USED );
746 assert( c->c_conn_state == SLAP_C_CLOSING );
748 /* note: connections_mutex and c_mutex should be locked by caller */
750 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
751 if( c->c_ops != NULL ) {
753 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
754 "connection_close: conn %d deferring sd %d\n",
757 Debug( LDAP_DEBUG_TRACE,
758 "connection_close: deferring conn=%ld sd=%d\n",
759 c->c_connid, sd, 0 );
765 LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
766 "connection_close: conn %d sd %d\n",
769 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%ld sd=%d\n",
770 c->c_connid, sd, 0 );
772 connection_destroy( c );
775 unsigned long connections_nextid(void)
778 assert( connections != NULL );
780 ldap_pvt_thread_mutex_lock( &connections_mutex );
784 ldap_pvt_thread_mutex_unlock( &connections_mutex );
789 Connection* connection_first( ber_socket_t *index )
791 assert( connections != NULL );
792 assert( index != NULL );
794 ldap_pvt_thread_mutex_lock( &connections_mutex );
798 return connection_next(NULL, index);
801 Connection* connection_next( Connection *c, ber_socket_t *index )
803 assert( connections != NULL );
804 assert( index != NULL );
805 assert( *index <= dtblsize );
808 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
813 for(; *index < dtblsize; (*index)++) {
814 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
815 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
823 if( connections[*index].c_struct_state == SLAP_C_USED ) {
824 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
825 c = &connections[(*index)++];
829 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
830 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
834 ldap_pvt_thread_mutex_lock( &c->c_mutex );
840 void connection_done( Connection *c )
842 assert( connections != NULL );
845 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
848 ldap_pvt_thread_mutex_unlock( &connections_mutex );
852 * connection_activity - handle the request operation op on connection
853 * conn. This routine figures out what kind of operation it is and
854 * calls the appropriate stub to handle it.
858 connection_operation( void *arg_v )
861 struct co_arg *arg = arg_v;
862 ber_tag_t tag = arg->co_op->o_tag;
863 Connection *conn = arg->co_conn;
865 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
867 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
869 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
871 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
872 "connection_operation: conn %d SASL bind in progress (tag=%ld).\n",
873 conn->c_connid, (long)tag ));
875 Debug( LDAP_DEBUG_ANY, "connection_operation: "
876 "error: SASL bind in progress (tag=%ld).\n",
879 send_ldap_result( conn, arg->co_op,
880 rc = LDAP_OPERATIONS_ERROR,
881 NULL, "SASL bind in progress", NULL, NULL );
882 goto operations_error;
887 rc = do_bind( conn, arg->co_op );
890 case LDAP_REQ_UNBIND:
891 rc = do_unbind( conn, arg->co_op );
895 rc = do_add( conn, arg->co_op );
898 case LDAP_REQ_DELETE:
899 rc = do_delete( conn, arg->co_op );
902 case LDAP_REQ_MODRDN:
903 rc = do_modrdn( conn, arg->co_op );
906 case LDAP_REQ_MODIFY:
907 rc = do_modify( conn, arg->co_op );
910 case LDAP_REQ_COMPARE:
911 rc = do_compare( conn, arg->co_op );
914 case LDAP_REQ_SEARCH:
915 rc = do_search( conn, arg->co_op );
918 case LDAP_REQ_ABANDON:
919 rc = do_abandon( conn, arg->co_op );
922 case LDAP_REQ_EXTENDED:
923 rc = do_extended( conn, arg->co_op );
928 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
929 "connection_operation: conn %d unknown LDAP request 0x%lx\n",
930 conn->c_connid, tag ));
932 Debug( LDAP_DEBUG_ANY, "unknown LDAP request 0x%lx\n",
935 arg->co_op->o_tag = LBER_ERROR;
936 send_ldap_disconnect( conn, arg->co_op,
937 LDAP_PROTOCOL_ERROR, "unknown LDAP request" );
942 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
945 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
947 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
949 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
951 conn->c_n_ops_executing--;
952 conn->c_n_ops_completed++;
954 slap_op_remove( &conn->c_ops, arg->co_op );
955 slap_op_free( arg->co_op );
958 free( (char *) arg );
963 case LDAP_REQ_UNBIND:
964 /* c_mutex is locked */
965 connection_closing( conn );
969 conn->c_sasl_bind_in_progress =
970 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
972 if( conn->c_conn_state == SLAP_C_BINDING) {
973 conn->c_conn_state = SLAP_C_ACTIVE;
977 connection_resched( conn );
979 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
984 int connection_read(ber_socket_t s)
988 assert( connections != NULL );
990 ldap_pvt_thread_mutex_lock( &connections_mutex );
992 /* get (locked) connection */
993 c = connection_get( s );
997 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
998 "connection_read: sock %ld no connection\n",
1001 Debug( LDAP_DEBUG_ANY,
1002 "connection_read(%ld): no connection!\n",
1007 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1013 if( c->c_conn_state == SLAP_C_CLOSING ) {
1015 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1016 "connection_read: conn %d connection closing, ignoring input\n",
1019 Debug( LDAP_DEBUG_TRACE,
1020 "connection_read(%d): closing, ignoring input for id=%ld\n",
1021 s, c->c_connid, 0 );
1023 connection_return( c );
1024 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1029 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1030 "connection_read: conn %d checking for input.\n", c->c_connid ));
1032 Debug( LDAP_DEBUG_TRACE,
1033 "connection_read(%d): checking for input on id=%ld\n",
1034 s, c->c_connid, 0 );
1038 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1039 rc = ldap_pvt_tls_accept( c->c_sb, NULL );
1045 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1046 "connection_read: conn %d TLS accept error, error %d\n",
1049 Debug( LDAP_DEBUG_TRACE,
1050 "connection_read(%d): TLS accept error "
1051 "error=%d id=%ld, closing\n",
1052 s, rc, c->c_connid );
1054 c->c_needs_tls_accept = 0;
1055 /* connections_mutex and c_mutex are locked */
1056 connection_closing( c );
1059 /* Drain input before close, to allow SSL error codes
1060 * to propagate to client. */
1067 rc = select(s+1, &rfd, NULL, NULL, &tv);
1069 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN,
1073 connection_close( c );
1075 } else if ( rc == 0 ) {
1079 c->c_needs_tls_accept = 0;
1081 /* we need to let SASL know */
1082 ssl = (void *)ldap_pvt_tls_sb_ctx( c->c_sb );
1084 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1085 if( c->c_tls_ssf > c->c_ssf ) {
1086 c->c_ssf = c->c_tls_ssf;
1089 authid = (char *)ldap_pvt_tls_get_peer( ssl );
1090 slap_sasl_external( c, c->c_tls_ssf, authid );
1092 connection_return( c );
1093 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1098 #ifdef HAVE_CYRUS_SASL
1099 if ( c->c_sasl_layers ) {
1100 c->c_sasl_layers = 0;
1102 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_context );
1104 if( rc != LDAP_SUCCESS ) {
1106 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1107 "connection_read: conn %d SASL install error %d, closing\n",
1110 Debug( LDAP_DEBUG_TRACE,
1111 "connection_read(%d): SASL install error "
1112 "error=%d id=%ld, closing\n",
1113 s, rc, c->c_connid );
1115 /* connections_mutex and c_mutex are locked */
1116 connection_closing( c );
1117 connection_close( c );
1118 connection_return( c );
1119 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1125 #define CONNECTION_INPUT_LOOP 1
1127 #ifdef DATA_READY_LOOP
1128 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_DATA_READY, NULL ) )
1129 #elif CONNECTION_INPUT_LOOP
1133 /* How do we do this without getting into a busy loop ? */
1134 rc = connection_input( c );
1139 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1140 "connection_read: conn %d input error %d, closing.\n",
1143 Debug( LDAP_DEBUG_TRACE,
1144 "connection_read(%d): input error=%d id=%ld, closing.\n",
1145 s, rc, c->c_connid );
1147 /* connections_mutex and c_mutex are locked */
1148 connection_closing( c );
1149 connection_close( c );
1150 connection_return( c );
1151 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1155 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1156 slapd_set_read( s, 1 );
1159 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1160 slapd_set_write( s, 1 );
1163 connection_return( c );
1164 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1178 #ifdef LDAP_CONNECTIONLESS
1183 if ( conn->c_currentber == NULL && (conn->c_currentber = ber_alloc())
1186 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1187 "connection_input: conn %d ber_alloc failed.\n", conn->c_connid ));
1189 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1196 #ifdef LDAP_CONNECTIONLESS
1199 char peername[sizeof("IP=255.255.255.255:65336")];
1200 len = ber_int_sb_read(conn->c_sb, &peeraddr,
1201 sizeof(struct sockaddr));
1202 if (len != sizeof(struct sockaddr))
1204 sprintf( peername, "IP=%s:%d",
1205 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1206 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1207 Statslog( LDAP_DEBUG_STATS,
1208 "conn=%ld UDP request from %s (%s) accepted.\n",
1209 conn->c_connid, peername,
1210 conn->c_sock_name, 0, 0 );
1213 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1214 if ( tag != LDAP_TAG_MESSAGE ) {
1218 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1221 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1222 "connection_input: conn %d ber_get_next failed, errno %d (%s).\n",
1223 conn->c_connid, err, sock_errstr(err) ));
1225 Debug( LDAP_DEBUG_TRACE,
1226 "ber_get_next on fd %d failed errno=%d (%s)\n",
1227 sd, err, sock_errstr(err) );
1229 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1230 /* log, close and send error */
1231 ber_free( conn->c_currentber, 1 );
1232 conn->c_currentber = NULL;
1239 ber = conn->c_currentber;
1240 conn->c_currentber = NULL;
1242 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1243 /* log, close and send error */
1245 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1246 "connection_input: conn %d ber_get_int returns 0x%lx.\n",
1247 conn->c_connid, tag ));
1249 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0,
1256 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1257 /* log, close and send error */
1259 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1260 "connection_input: conn %d ber_peek_tag returns 0x%lx.\n",
1261 conn->c_connid, tag ));
1263 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0,
1271 #ifdef LDAP_CONNECTIONLESS
1272 if (conn->c_is_udp) {
1273 if (tag == LBER_OCTETSTRING) {
1274 ber_get_stringa( ber, &cdn );
1275 tag = ber_peek_tag(ber, &len);
1277 if (tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH) {
1279 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1280 "connection_input: conn %d invalid req for UDP 0x%lx.\n",
1281 conn->c_connid, tag ));
1283 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0,
1291 if(tag == LDAP_REQ_BIND) {
1292 /* immediately abandon all exiting operations upon BIND */
1293 connection_abandon( conn );
1296 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1298 #ifdef LDAP_CONNECTIONLESS
1299 op->o_peeraddr = peeraddr;
1302 op->o_protocol = LDAP_VERSION2;
1305 if ( conn->c_conn_state == SLAP_C_BINDING
1306 || conn->c_conn_state == SLAP_C_CLOSING )
1309 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1310 "connection_input: conn %d deferring operation\n",
1313 Debug( LDAP_DEBUG_ANY, "deferring operation\n", 0, 0, 0 );
1315 conn->c_n_ops_pending++;
1316 slap_op_add( &conn->c_pending_ops, op );
1319 conn->c_n_ops_executing++;
1320 connection_op_activate( conn, op );
1324 if ( conn->c_struct_state != SLAP_C_USED ) {
1325 /* connection must have got closed underneath us */
1329 assert( conn->c_struct_state == SLAP_C_USED );
1335 connection_resched( Connection *conn )
1339 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1342 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1344 /* us trylock to avoid possible deadlock */
1345 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1349 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1350 "connection_resched: conn %d reaquiring locks.\n",
1353 Debug( LDAP_DEBUG_TRACE,
1354 "connection_resched: reaquiring locks conn=%ld sd=%d\n",
1355 conn->c_connid, sd, 0 );
1358 * reaquire locks in the right order...
1359 * this may allow another thread to close this connection,
1360 * so recheck state below.
1362 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1363 ldap_pvt_thread_mutex_lock( &connections_mutex );
1364 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1367 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1369 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1370 "connection_resched: conn %d closed by other thread.\n",
1373 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1374 "closed by other thread conn=%ld sd=%d\n",
1375 conn->c_connid, sd, 0 );
1379 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1380 "connection_resched: conn %d attempting closing.\n",
1383 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1384 "attempting closing conn=%ld sd=%d\n",
1385 conn->c_connid, sd, 0 );
1387 connection_close( conn );
1390 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1394 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1395 /* other states need different handling */
1399 for( op = slap_op_pop( &conn->c_pending_ops );
1401 op = slap_op_pop( &conn->c_pending_ops ) )
1403 /* pending operations should not be marked for abandonment */
1404 assert(!op->o_abandon);
1406 conn->c_n_ops_pending--;
1407 conn->c_n_ops_executing++;
1409 connection_op_activate( conn, op );
1411 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1418 static int connection_op_activate( Connection *conn, Operation *op )
1422 ber_tag_t tag = op->o_tag;
1424 if(tag == LDAP_REQ_BIND) {
1425 conn->c_conn_state = SLAP_C_BINDING;
1428 arg = (struct co_arg *) ch_malloc( sizeof(struct co_arg) );
1429 arg->co_conn = conn;
1432 if (!arg->co_op->o_dn) {
1433 arg->co_op->o_authz = conn->c_authz;
1434 arg->co_op->o_dn = ch_strdup( conn->c_dn != NULL ? conn->c_dn : "" );
1436 arg->co_op->o_ndn = ch_strdup( arg->co_op->o_dn );
1437 (void) dn_normalize( arg->co_op->o_ndn );
1438 arg->co_op->o_authtype = conn->c_authtype;
1439 arg->co_op->o_authmech = conn->c_authmech != NULL
1440 ? ch_strdup( conn->c_authmech ) : NULL;
1442 if (!arg->co_op->o_protocol) {
1443 arg->co_op->o_protocol = conn->c_protocol
1444 ? conn->c_protocol : LDAP_VERSION3;
1446 arg->co_op->o_connid = conn->c_connid;
1448 slap_op_add( &conn->c_ops, arg->co_op );
1450 status = ldap_pvt_thread_pool_submit( &connection_pool,
1451 connection_operation, (void *) arg );
1453 if ( status != 0 ) {
1455 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1456 "connection_op_activate: conn %d thread pool submit failed.\n",
1459 Debug( LDAP_DEBUG_ANY,
1460 "ldap_pvt_thread_pool_submit failed (%d)\n", status, 0, 0 );
1462 /* should move op to pending list */
1468 int connection_write(ber_socket_t s)
1471 assert( connections != NULL );
1473 ldap_pvt_thread_mutex_lock( &connections_mutex );
1475 c = connection_get( s );
1477 slapd_clr_write( s, 0);
1481 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1482 "connection_write: sock %ld no connection!\n",(long)s));
1484 Debug( LDAP_DEBUG_ANY,
1485 "connection_write(%ld): no connection!\n",
1489 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1496 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1497 "connection_write conn %d waking output.\n",
1500 Debug( LDAP_DEBUG_TRACE,
1501 "connection_write(%d): waking output for id=%ld\n",
1502 s, c->c_connid, 0 );
1504 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1506 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) )
1507 slapd_set_read( s, 1 );
1508 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) )
1509 slapd_set_write( s, 1 );
1510 connection_return( c );
1511 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1517 * Create client side and server side connection structures, connected to
1518 * one another, for the front end to use for searches on arbitrary back ends.
1521 int connection_internal_open( Connection **conn, LDAP **ldp, const char *id )
1524 ber_socket_t fd[2] = {-1,-1};
1530 rc = lutil_pair( fd );
1535 rc = connection_init( fd[1], "INT", "localhost",
1536 "localhost:0", "localhost:00", 0, 256, id );
1542 slapd_add_internal( fd[1] );
1544 /* A search operation, number 0 */
1545 op = slap_op_alloc( NULL, 0, LDAP_REQ_SEARCH, 0);
1546 op->o_ndn = ch_strdup( id );
1547 op->o_protocol = LDAP_VERSION3;
1549 (*conn) = connection_get( fd[1] );
1550 (*conn)->c_ops = op;
1551 (*conn)->c_conn_state = SLAP_C_ACTIVE;
1554 /* Create the client side of the connection */
1555 rc = ldap_open_internal_connection( ldp, &(fd[0]) );
1556 if( rc != LDAP_SUCCESS ) {
1561 /* The connection_get() will have locked the connection's mutex */
1562 ldap_pvt_thread_mutex_unlock( &((*conn)->c_mutex) );
1564 return LDAP_SUCCESS;
1568 void connection_internal_close( Connection *conn )
1570 Operation *op = conn->c_ops;
1572 slap_op_remove( &conn->c_ops, op );
1574 connection_closing( conn );
1575 connection_close( conn );