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 );
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( );
425 c->c_currentber = NULL;
427 /* should check status of thread calls */
428 ldap_pvt_thread_mutex_init( &c->c_mutex );
429 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
430 ldap_pvt_thread_cond_init( &c->c_write_cv );
432 c->c_struct_state = SLAP_C_UNUSED;
435 ldap_pvt_thread_mutex_lock( &c->c_mutex );
437 assert( c->c_struct_state == SLAP_C_UNUSED );
438 assert( c->c_authmech == NULL );
439 assert( c->c_dn == NULL );
440 assert( c->c_cdn == NULL );
441 assert( c->c_listener_url == NULL );
442 assert( c->c_peer_domain == NULL );
443 assert( c->c_peer_name == NULL );
444 assert( c->c_sock_name == NULL );
445 assert( c->c_ops == NULL );
446 assert( c->c_pending_ops == NULL );
447 assert( c->c_sasl_bind_mech == NULL );
448 assert( c->c_sasl_context == NULL );
449 assert( c->c_sasl_extra == NULL );
450 assert( c->c_currentber == NULL );
452 c->c_listener_url = ch_strdup( url );
453 c->c_peer_domain = ch_strdup( dnsname );
454 c->c_peer_name = ch_strdup( peername );
455 c->c_sock_name = ch_strdup( sockname );
457 c->c_n_ops_received = 0;
458 c->c_n_ops_executing = 0;
459 c->c_n_ops_pending = 0;
460 c->c_n_ops_completed = 0;
466 /* set to zero until bind, implies LDAP_VERSION3 */
469 c->c_activitytime = c->c_starttime = slap_get_time();
472 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
473 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
475 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
476 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
477 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
478 LBER_SBIOD_LEVEL_PROVIDER, NULL );
481 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
482 INT_MAX, (void*)"ldap_" );
485 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
486 c /* non-NULL */ ) < 0 )
489 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
490 "connection_init: conn %d set nonblocking failed\n",
493 Debug( LDAP_DEBUG_ANY,
494 "connection_init(%d, %s): set nonblocking failed\n",
495 s, c->c_peer_name, 0 );
499 id = c->c_connid = conn_nextid++;
501 c->c_conn_state = SLAP_C_INACTIVE;
502 c->c_struct_state = SLAP_C_USED;
504 c->c_ssf = c->c_transport_ssf = ssf;
510 c->c_needs_tls_accept = 1;
513 c->c_needs_tls_accept = 0;
518 slap_sasl_external( c, ssf, authid );
520 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
521 ldap_pvt_thread_mutex_unlock( &connections_mutex );
523 backend_connection_init(c);
528 void connection2anonymous( Connection *c )
530 assert( connections != NULL );
533 if(c->c_authmech != NULL ) {
535 c->c_authmech = NULL;
538 if(c->c_dn != NULL) {
543 if(c->c_cdn != NULL) {
548 c->c_authc_backend = NULL;
549 c->c_authz_backend = NULL;
553 connection_destroy( Connection *c )
555 /* note: connections_mutex should be locked by caller */
558 assert( connections != NULL );
560 assert( c->c_struct_state != SLAP_C_UNUSED );
561 assert( c->c_conn_state != SLAP_C_INVALID );
562 assert( c->c_ops == NULL );
564 backend_connection_destroy(c);
569 c->c_activitytime = c->c_starttime = 0;
571 connection2anonymous( c );
573 if(c->c_listener_url != NULL) {
574 free(c->c_listener_url);
575 c->c_listener_url = NULL;
578 if(c->c_peer_domain != NULL) {
579 free(c->c_peer_domain);
580 c->c_peer_domain = NULL;
582 if(c->c_peer_name != NULL) {
585 * If peer was a domain socket, unlink. Mind you,
586 * they may be un-named. Should we leave this to
589 if (strncmp(c->c_peer_name, "PATH=", 5) == 0) {
590 char *path = c->c_peer_name + 5;
595 #endif /* LDAP_PF_LOCAL */
597 free(c->c_peer_name);
598 c->c_peer_name = NULL;
600 if(c->c_sock_name != NULL) {
601 free(c->c_sock_name);
602 c->c_sock_name = NULL;
605 c->c_sasl_bind_in_progress = 0;
606 if(c->c_sasl_bind_mech != NULL) {
607 free(c->c_sasl_bind_mech);
608 c->c_sasl_bind_mech = NULL;
611 slap_sasl_close( c );
613 if ( c->c_currentber != NULL ) {
614 ber_free( c->c_currentber, 1 );
615 c->c_currentber = NULL;
618 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
619 if ( sd != AC_SOCKET_INVALID ) {
620 slapd_remove( sd, 0 );
622 Statslog( LDAP_DEBUG_STATS,
623 "conn=%ld fd=%d closed\n",
624 c->c_connid, sd, 0, 0, 0 );
627 ber_sockbuf_free( c->c_sb );
628 c->c_sb = ber_sockbuf_alloc( );
630 c->c_conn_state = SLAP_C_INVALID;
631 c->c_struct_state = SLAP_C_UNUSED;
634 int connection_state_closing( Connection *c )
636 /* c_mutex must be locked by caller */
640 assert( c->c_struct_state == SLAP_C_USED );
642 state = c->c_conn_state;
644 assert( state != SLAP_C_INVALID );
646 return state == SLAP_C_CLOSING;
649 static void connection_abandon( Connection *c )
651 /* c_mutex must be locked by caller */
655 for( o = c->c_ops; o != NULL; o = o->o_next ) {
656 ldap_pvt_thread_mutex_lock( &o->o_abandonmutex );
658 ldap_pvt_thread_mutex_unlock( &o->o_abandonmutex );
661 /* remove pending operations */
662 for( o = slap_op_pop( &c->c_pending_ops );
664 o = slap_op_pop( &c->c_pending_ops ) )
670 void connection_closing( Connection *c )
672 assert( connections != NULL );
674 assert( c->c_struct_state == SLAP_C_USED );
675 assert( c->c_conn_state != SLAP_C_INVALID );
677 /* c_mutex must be locked by caller */
679 if( c->c_conn_state != SLAP_C_CLOSING ) {
682 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
684 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
685 "connection_closing: conn %d readying socket %d for close.\n",
688 Debug( LDAP_DEBUG_TRACE,
689 "connection_closing: readying conn=%ld sd=%d for close\n",
690 c->c_connid, sd, 0 );
692 /* update state to closing */
693 c->c_conn_state = SLAP_C_CLOSING;
695 /* don't listen on this port anymore */
696 slapd_clr_read( sd, 1 );
698 /* abandon active operations */
699 connection_abandon( c );
701 /* wake write blocked operations */
702 slapd_clr_write( sd, 1 );
703 ldap_pvt_thread_cond_signal( &c->c_write_cv );
707 static void connection_close( Connection *c )
711 assert( connections != NULL );
713 assert( c->c_struct_state == SLAP_C_USED );
714 assert( c->c_conn_state == SLAP_C_CLOSING );
716 /* note: connections_mutex and c_mutex should be locked by caller */
718 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
719 if( c->c_ops != NULL ) {
721 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
722 "connection_close: conn %d deferring sd %d\n",
725 Debug( LDAP_DEBUG_TRACE,
726 "connection_close: deferring conn=%ld sd=%d\n",
727 c->c_connid, sd, 0 );
733 LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
734 "connection_close: conn %d sd %d\n",
737 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%ld sd=%d\n",
738 c->c_connid, sd, 0 );
740 connection_destroy( c );
743 unsigned long connections_nextid(void)
746 assert( connections != NULL );
748 ldap_pvt_thread_mutex_lock( &connections_mutex );
752 ldap_pvt_thread_mutex_unlock( &connections_mutex );
757 Connection* connection_first( ber_socket_t *index )
759 assert( connections != NULL );
760 assert( index != NULL );
762 ldap_pvt_thread_mutex_lock( &connections_mutex );
766 return connection_next(NULL, index);
769 Connection* connection_next( Connection *c, ber_socket_t *index )
771 assert( connections != NULL );
772 assert( index != NULL );
773 assert( *index <= dtblsize );
776 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
781 for(; *index < dtblsize; (*index)++) {
782 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
783 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
791 if( connections[*index].c_struct_state == SLAP_C_USED ) {
792 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
793 c = &connections[(*index)++];
797 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
798 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
802 ldap_pvt_thread_mutex_lock( &c->c_mutex );
808 void connection_done( Connection *c )
810 assert( connections != NULL );
813 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
816 ldap_pvt_thread_mutex_unlock( &connections_mutex );
820 * connection_activity - handle the request operation op on connection
821 * conn. This routine figures out what kind of operation it is and
822 * calls the appropriate stub to handle it.
826 connection_operation( void *arg_v )
829 struct co_arg *arg = arg_v;
830 ber_tag_t tag = arg->co_op->o_tag;
831 Connection *conn = arg->co_conn;
833 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
835 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
837 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
839 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
840 "connection_operation: conn %d SASL bind in progress (tag=%ld).\n",
841 conn->c_connid, (long)tag ));
843 Debug( LDAP_DEBUG_ANY, "connection_operation: "
844 "error: SASL bind in progress (tag=%ld).\n",
847 send_ldap_result( conn, arg->co_op,
848 rc = LDAP_OPERATIONS_ERROR,
849 NULL, "SASL bind in progress", NULL, NULL );
850 goto operations_error;
855 rc = do_bind( conn, arg->co_op );
858 case LDAP_REQ_UNBIND:
859 rc = do_unbind( conn, arg->co_op );
863 rc = do_add( conn, arg->co_op );
866 case LDAP_REQ_DELETE:
867 rc = do_delete( conn, arg->co_op );
870 case LDAP_REQ_MODRDN:
871 rc = do_modrdn( conn, arg->co_op );
874 case LDAP_REQ_MODIFY:
875 rc = do_modify( conn, arg->co_op );
878 case LDAP_REQ_COMPARE:
879 rc = do_compare( conn, arg->co_op );
882 case LDAP_REQ_SEARCH:
883 rc = do_search( conn, arg->co_op );
886 case LDAP_REQ_ABANDON:
887 rc = do_abandon( conn, arg->co_op );
890 case LDAP_REQ_EXTENDED:
891 rc = do_extended( conn, arg->co_op );
896 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
897 "connection_operation: conn %d unknown LDAP request 0x%lx\n",
898 conn->c_connid, tag ));
900 Debug( LDAP_DEBUG_ANY, "unknown LDAP request 0x%lx\n",
903 arg->co_op->o_tag = LBER_ERROR;
904 send_ldap_disconnect( conn, arg->co_op,
905 LDAP_PROTOCOL_ERROR, "unknown LDAP request" );
910 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
913 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
915 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
917 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
919 conn->c_n_ops_executing--;
920 conn->c_n_ops_completed++;
922 slap_op_remove( &conn->c_ops, arg->co_op );
923 slap_op_free( arg->co_op );
926 free( (char *) arg );
931 case LDAP_REQ_UNBIND:
932 /* c_mutex is locked */
933 connection_closing( conn );
937 conn->c_sasl_bind_in_progress =
938 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
940 if( conn->c_conn_state == SLAP_C_BINDING) {
941 conn->c_conn_state = SLAP_C_ACTIVE;
945 connection_resched( conn );
947 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
952 int connection_read(ber_socket_t s)
956 assert( connections != NULL );
958 ldap_pvt_thread_mutex_lock( &connections_mutex );
960 /* get (locked) connection */
961 c = connection_get( s );
965 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
966 "connection_read: sock %ld no connection\n",
969 Debug( LDAP_DEBUG_ANY,
970 "connection_read(%ld): no connection!\n",
975 ldap_pvt_thread_mutex_unlock( &connections_mutex );
981 if( c->c_conn_state == SLAP_C_CLOSING ) {
983 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
984 "connection_read: conn %d connection closing, ignoring input\n",
987 Debug( LDAP_DEBUG_TRACE,
988 "connection_read(%d): closing, ignoring input for id=%ld\n",
991 connection_return( c );
992 ldap_pvt_thread_mutex_unlock( &connections_mutex );
997 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
998 "connection_read: conn %d checking for input.\n", c->c_connid ));
1000 Debug( LDAP_DEBUG_TRACE,
1001 "connection_read(%d): checking for input on id=%ld\n",
1002 s, c->c_connid, 0 );
1006 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1007 rc = ldap_pvt_tls_accept( c->c_sb, NULL );
1013 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1014 "connection_read: conn %d TLS accept error, error %d\n",
1017 Debug( LDAP_DEBUG_TRACE,
1018 "connection_read(%d): TLS accept error "
1019 "error=%d id=%ld, closing\n",
1020 s, rc, c->c_connid );
1022 c->c_needs_tls_accept = 0;
1023 /* connections_mutex and c_mutex are locked */
1024 connection_closing( c );
1027 /* Drain input before close, to allow SSL error codes
1028 * to propagate to client. */
1035 rc = select(s+1, &rfd, NULL, NULL, &tv);
1037 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN,
1041 connection_close( c );
1043 } else if ( rc == 0 ) {
1047 c->c_needs_tls_accept = 0;
1049 /* we need to let SASL know */
1050 ssl = (void *)ldap_pvt_tls_sb_handle( c->c_sb );
1052 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1053 if( c->c_tls_ssf > c->c_ssf ) {
1054 c->c_ssf = c->c_tls_ssf;
1057 authid = (char *)ldap_pvt_tls_get_peer( ssl );
1058 slap_sasl_external( c, c->c_tls_ssf, authid );
1060 connection_return( c );
1061 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1066 #ifdef HAVE_CYRUS_SASL
1067 if ( c->c_sasl_layers ) {
1068 c->c_sasl_layers = 0;
1070 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_context );
1072 if( rc != LDAP_SUCCESS ) {
1074 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1075 "connection_read: conn %d SASL install error %d, closing\n",
1078 Debug( LDAP_DEBUG_TRACE,
1079 "connection_read(%d): SASL install error "
1080 "error=%d id=%ld, closing\n",
1081 s, rc, c->c_connid );
1083 /* connections_mutex and c_mutex are locked */
1084 connection_closing( c );
1085 connection_close( c );
1086 connection_return( c );
1087 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1093 #define CONNECTION_INPUT_LOOP 1
1095 #ifdef DATA_READY_LOOP
1096 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_DATA_READY, NULL ) )
1097 #elif CONNECTION_INPUT_LOOP
1101 /* How do we do this without getting into a busy loop ? */
1102 rc = connection_input( c );
1107 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1108 "connection_read: conn %d input error %d, closing.\n",
1111 Debug( LDAP_DEBUG_TRACE,
1112 "connection_read(%d): input 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 );
1123 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1124 slapd_set_read( s, 1 );
1127 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1128 slapd_set_write( s, 1 );
1131 connection_return( c );
1132 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1147 if ( conn->c_currentber == NULL && (conn->c_currentber = ber_alloc())
1150 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1151 "connection_input: conn %d ber_alloc failed.\n", conn->c_connid ));
1153 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1160 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1161 if ( tag != LDAP_TAG_MESSAGE ) {
1165 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1168 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1169 "connection_input: conn %d ber_get_next failed, errno %d (%s).\n",
1170 conn->c_connid, err, sock_errstr(err) ));
1172 Debug( LDAP_DEBUG_TRACE,
1173 "ber_get_next on fd %d failed errno=%d (%s)\n",
1174 sd, err, sock_errstr(err) );
1176 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1177 /* log, close and send error */
1178 ber_free( conn->c_currentber, 1 );
1179 conn->c_currentber = NULL;
1186 ber = conn->c_currentber;
1187 conn->c_currentber = NULL;
1189 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1190 /* log, close and send error */
1192 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1193 "connection_input: conn %d ber_get_int returns 0x%lx.\n",
1194 conn->c_connid, tag ));
1196 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0,
1203 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1204 /* log, close and send error */
1206 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1207 "connection_input: conn %d ber_peek_tag returns 0x%lx.\n",
1208 conn->c_connid, tag ));
1210 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0,
1218 if(tag == LDAP_REQ_BIND) {
1219 /* immediately abandon all exiting operations upon BIND */
1220 connection_abandon( conn );
1223 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1225 if ( conn->c_conn_state == SLAP_C_BINDING
1226 || conn->c_conn_state == SLAP_C_CLOSING )
1229 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1230 "connection_input: conn %d deferring operation\n",
1233 Debug( LDAP_DEBUG_ANY, "deferring operation\n", 0, 0, 0 );
1235 conn->c_n_ops_pending++;
1236 slap_op_add( &conn->c_pending_ops, op );
1239 conn->c_n_ops_executing++;
1240 connection_op_activate( conn, op );
1244 if ( conn->c_struct_state != SLAP_C_USED ) {
1245 /* connection must have got closed underneath us */
1249 assert( conn->c_struct_state == SLAP_C_USED );
1255 connection_resched( Connection *conn )
1259 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1262 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1264 /* us trylock to avoid possible deadlock */
1265 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1269 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1270 "connection_resched: conn %d reaquiring locks.\n",
1273 Debug( LDAP_DEBUG_TRACE,
1274 "connection_resched: reaquiring locks conn=%ld sd=%d\n",
1275 conn->c_connid, sd, 0 );
1278 * reaquire locks in the right order...
1279 * this may allow another thread to close this connection,
1280 * so recheck state below.
1282 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1283 ldap_pvt_thread_mutex_lock( &connections_mutex );
1284 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1287 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1289 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1290 "connection_resched: conn %d closed by other thread.\n",
1293 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1294 "closed by other thread conn=%ld sd=%d\n",
1295 conn->c_connid, sd, 0 );
1299 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1300 "connection_resched: conn %d attempting closing.\n",
1303 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1304 "attempting closing conn=%ld sd=%d\n",
1305 conn->c_connid, sd, 0 );
1307 connection_close( conn );
1310 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1314 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1315 /* other states need different handling */
1319 for( op = slap_op_pop( &conn->c_pending_ops );
1321 op = slap_op_pop( &conn->c_pending_ops ) )
1323 /* pending operations should not be marked for abandonment */
1324 assert(!op->o_abandon);
1326 conn->c_n_ops_pending--;
1327 conn->c_n_ops_executing++;
1329 connection_op_activate( conn, op );
1331 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1338 static int connection_op_activate( Connection *conn, Operation *op )
1342 ber_tag_t tag = op->o_tag;
1344 if(tag == LDAP_REQ_BIND) {
1345 conn->c_conn_state = SLAP_C_BINDING;
1348 arg = (struct co_arg *) ch_malloc( sizeof(struct co_arg) );
1349 arg->co_conn = conn;
1352 arg->co_op->o_authz = conn->c_authz;
1353 arg->co_op->o_dn = ch_strdup( conn->c_dn != NULL ? conn->c_dn : "" );
1354 arg->co_op->o_ndn = ch_strdup( arg->co_op->o_dn );
1355 (void) dn_normalize( arg->co_op->o_ndn );
1356 arg->co_op->o_authtype = conn->c_authtype;
1357 arg->co_op->o_authmech = conn->c_authmech != NULL
1358 ? ch_strdup( conn->c_authmech ) : NULL;
1360 arg->co_op->o_protocol = conn->c_protocol
1361 ? conn->c_protocol : LDAP_VERSION3;
1362 arg->co_op->o_connid = conn->c_connid;
1364 slap_op_add( &conn->c_ops, arg->co_op );
1366 status = ldap_pvt_thread_pool_submit( &connection_pool,
1367 connection_operation, (void *) arg );
1369 if ( status != 0 ) {
1371 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1372 "connection_op_activate: conn %d thread pool submit failed.\n",
1375 Debug( LDAP_DEBUG_ANY,
1376 "ldap_pvt_thread_pool_submit failed (%d)\n", status, 0, 0 );
1378 /* should move op to pending list */
1384 int connection_write(ber_socket_t s)
1387 assert( connections != NULL );
1389 ldap_pvt_thread_mutex_lock( &connections_mutex );
1391 c = connection_get( s );
1393 slapd_clr_write( s, 0);
1397 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1398 "connection_write: sock %ld no connection!\n",(long)s));
1400 Debug( LDAP_DEBUG_ANY,
1401 "connection_write(%ld): no connection!\n",
1405 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1412 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1413 "connection_write conn %d waking output.\n",
1416 Debug( LDAP_DEBUG_TRACE,
1417 "connection_write(%d): waking output for id=%ld\n",
1418 s, c->c_connid, 0 );
1420 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1422 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) )
1423 slapd_set_read( s, 1 );
1424 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) )
1425 slapd_set_write( s, 1 );
1426 connection_return( c );
1427 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1433 * Create client side and server side connection structures, connected to
1434 * one another, for the front end to use for searches on arbitrary back ends.
1437 int connection_internal_open( Connection **conn, LDAP **ldp, const char *id )
1440 ber_socket_t fd[2] = {-1,-1};
1446 rc = lutil_pair( fd );
1451 rc = connection_init( fd[1], "INT", "localhost",
1452 "localhost:0", "localhost:00", 0, 256, id );
1458 slapd_add_internal( fd[1] );
1460 /* A search operation, number 0 */
1461 op = slap_op_alloc( NULL, 0, LDAP_REQ_SEARCH, 0);
1462 op->o_ndn = ch_strdup( id );
1463 op->o_protocol = LDAP_VERSION3;
1465 (*conn) = connection_get( fd[1] );
1466 (*conn)->c_ops = op;
1467 (*conn)->c_conn_state = SLAP_C_ACTIVE;
1470 /* Create the client side of the connection */
1471 rc = ldap_open_internal_connection( ldp, &(fd[0]) );
1472 if( rc != LDAP_SUCCESS ) {
1477 /* The connection_get() will have locked the connection's mutex */
1478 ldap_pvt_thread_mutex_unlock( &((*conn)->c_mutex) );
1480 return LDAP_SUCCESS;
1484 void connection_internal_close( Connection *conn )
1486 Operation *op = conn->c_ops;
1488 slap_op_remove( &conn->c_ops, op );
1490 connection_closing( conn );
1491 connection_close( conn );