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/signal.h>
15 #include <ac/string.h>
17 #include <ac/unistd.h>
23 /* protected by connections_mutex */
24 static ldap_pvt_thread_mutex_t connections_mutex;
25 static Connection *connections = NULL;
26 static unsigned long conn_nextid = 0;
28 /* structure state (protected by connections_mutex) */
29 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
30 #define SLAP_C_UNUSED 0x01
31 #define SLAP_C_USED 0x02
33 /* connection state (protected by c_mutex ) */
34 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
35 #define SLAP_C_INACTIVE 0x01 /* zero threads */
36 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
37 #define SLAP_C_BINDING 0x03 /* binding */
38 #define SLAP_C_CLOSING 0x04 /* closing */
41 connection_state2str( int state )
44 case SLAP_C_INVALID: return "!";
45 case SLAP_C_INACTIVE: return "|";
46 case SLAP_C_ACTIVE: return "";
47 case SLAP_C_BINDING: return "B";
48 case SLAP_C_CLOSING: return "C";
54 static Connection* connection_get( ber_socket_t s );
56 static int connection_input( Connection *c );
57 static void connection_close( Connection *c );
59 static int connection_op_activate( Connection *conn, Operation *op );
60 static int connection_resched( Connection *conn );
61 static void connection_abandon( Connection *conn );
62 static void connection_destroy( Connection *c );
70 * Initialize connection management infrastructure.
72 int connections_init(void)
74 assert( connections == NULL );
76 if( connections != NULL) {
78 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
79 "connections_init: already initialized.\n" ));
81 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
87 /* should check return of every call */
88 ldap_pvt_thread_mutex_init( &connections_mutex );
90 connections = (Connection *) calloc( dtblsize, sizeof(Connection) );
92 if( connections == NULL ) {
94 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
95 "connections_init: allocation (%d * %ld) of connection array failed\n",
96 dtblsize, (long) sizeof(Connection) ));
98 Debug( LDAP_DEBUG_ANY,
99 "connections_init: allocation (%d*%ld) of connection array failed\n",
100 dtblsize, (long) sizeof(Connection), 0 );
105 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
106 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
109 * per entry initialization of the Connection array initialization
110 * will be done by connection_init()
117 * Destroy connection management infrastructure.
119 int connections_destroy(void)
123 /* should check return of every call */
125 if( connections == NULL) {
127 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
128 "connections_destroy: nothing to destroy.\n"));
130 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
136 for ( i = 0; i < dtblsize; i++ ) {
137 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
138 ber_sockbuf_free( connections[i].c_sb );
139 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
140 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
141 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
148 ldap_pvt_thread_mutex_destroy( &connections_mutex );
153 * shutdown all connections
155 int connections_shutdown(void)
159 ldap_pvt_thread_mutex_lock( &connections_mutex );
161 for ( i = 0; i < dtblsize; i++ ) {
162 if( connections[i].c_struct_state != SLAP_C_USED ) {
166 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
168 /* connections_mutex and c_mutex are locked */
169 connection_closing( &connections[i] );
170 connection_close( &connections[i] );
172 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
175 ldap_pvt_thread_mutex_unlock( &connections_mutex );
181 * Timeout idle connections.
183 int connections_timeout_idle(time_t now)
189 for( c = connection_first( &connindex );
191 c = connection_next( c, &connindex ) )
193 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
195 connection_closing( c );
196 connection_close( c );
200 connection_done( c );
205 static Connection* connection_get( ber_socket_t s )
207 /* connections_mutex should be locked by caller */
212 LDAP_LOG(( "connection", LDAP_LEVEL_ENTRY,
213 "connection_get: socket %ld\n", (long)s ));
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", LDAP_LEVEL_ARGS,
278 "connection_get: connection %d not used\n", s ));
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", LDAP_LEVEL_RESULTS,
291 "connection_get: get for %d got connid %lu\n", s, c->c_connid ));
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,
326 const char* sockname,
334 assert( connections != NULL );
336 assert( dnsname != NULL );
337 assert( peername != NULL );
338 assert( sockname != NULL );
341 assert( tls_udp_option != 1 );
344 if( s == AC_SOCKET_INVALID ) {
346 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
347 "connection_init: init of socket %ld invalid.\n", (long)s ));
349 Debug( LDAP_DEBUG_ANY,
350 "connection_init(%ld): invalid.\n",
358 assert( s < dtblsize );
361 ldap_pvt_thread_mutex_lock( &connections_mutex );
372 for( i=0; i < dtblsize; i++) {
375 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
376 assert( connections[i].c_sb == 0 );
381 sd = AC_SOCKET_INVALID;
382 if (connections[i].c_sb != NULL)
383 ber_sockbuf_ctrl( connections[i].c_sb, LBER_SB_OPT_GET_FD, &sd );
385 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
386 assert( sd == AC_SOCKET_INVALID );
391 assert( connections[i].c_struct_state == SLAP_C_USED );
392 assert( connections[i].c_conn_state != SLAP_C_INVALID );
393 assert( sd != AC_SOCKET_INVALID );
398 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
399 "connection_init: skt %d connection table full (%d/%d)\n",
402 Debug( LDAP_DEBUG_ANY,
403 "connection_init(%d): connection table full (%d/%d)\n",
406 ldap_pvt_thread_mutex_unlock( &connections_mutex );
414 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
415 c->c_authmech.bv_val = NULL;
416 c->c_authmech.bv_len = 0;
417 c->c_dn.bv_val = NULL;
419 c->c_ndn.bv_val = NULL;
421 c->c_cdn.bv_val = NULL;
425 c->c_listener_url.bv_val = NULL;
426 c->c_listener_url.bv_len = 0;
427 c->c_peer_domain.bv_val = NULL;
428 c->c_peer_domain.bv_len = 0;
429 c->c_peer_name.bv_val = NULL;
430 c->c_peer_name.bv_len = 0;
431 c->c_sock_name.bv_val = NULL;
432 c->c_sock_name.bv_len = 0;
434 LDAP_STAILQ_INIT(&c->c_ops);
435 LDAP_STAILQ_INIT(&c->c_pending_ops);
437 c->c_sasl_bind_mech.bv_val = NULL;
438 c->c_sasl_bind_mech.bv_len = 0;
439 c->c_sasl_context = NULL;
440 c->c_sasl_extra = NULL;
442 c->c_sb = ber_sockbuf_alloc( );
445 ber_len_t max = sockbuf_max_incoming;
446 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
449 c->c_currentber = NULL;
451 /* should check status of thread calls */
452 ldap_pvt_thread_mutex_init( &c->c_mutex );
453 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
454 ldap_pvt_thread_cond_init( &c->c_write_cv );
456 c->c_struct_state = SLAP_C_UNUSED;
459 ldap_pvt_thread_mutex_lock( &c->c_mutex );
461 assert( c->c_struct_state == SLAP_C_UNUSED );
462 assert( c->c_authmech.bv_val == NULL );
463 assert( c->c_dn.bv_val == NULL );
464 assert( c->c_ndn.bv_val == NULL );
465 assert( c->c_cdn.bv_val == NULL );
466 assert( c->c_groups == NULL );
467 assert( c->c_listener_url.bv_val == NULL );
468 assert( c->c_peer_domain.bv_val == NULL );
469 assert( c->c_peer_name.bv_val == NULL );
470 assert( c->c_sock_name.bv_val == NULL );
471 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
472 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
473 assert( c->c_sasl_bind_mech.bv_val == NULL );
474 assert( c->c_sasl_context == NULL );
475 assert( c->c_sasl_extra == NULL );
476 assert( c->c_currentber == NULL );
478 ber_str2bv( url, 0, 1, &c->c_listener_url );
479 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
480 ber_str2bv( peername, 0, 1, &c->c_peer_name );
481 ber_str2bv( sockname, 0, 1, &c->c_sock_name );
483 c->c_n_ops_received = 0;
484 c->c_n_ops_executing = 0;
485 c->c_n_ops_pending = 0;
486 c->c_n_ops_completed = 0;
492 /* set to zero until bind, implies LDAP_VERSION3 */
496 c->c_activitytime = c->c_starttime = slap_get_time();
498 if( global_idletimeout > 0 ) {
499 c->c_activitytime = c->c_starttime = slap_get_time();
503 #ifdef LDAP_CONNECTIONLESS
505 if (tls_udp_option == 2)
509 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
510 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
512 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
513 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
514 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
515 LBER_SBIOD_LEVEL_PROVIDER, NULL );
520 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
521 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
523 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
524 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
528 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
529 INT_MAX, (void*)"ldap_" );
532 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
533 c /* non-NULL */ ) < 0 )
536 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
537 "connection_init: conn %lu set nonblocking failed\n",
540 Debug( LDAP_DEBUG_ANY,
541 "connection_init(%d, %s): set nonblocking failed\n",
542 s, c->c_peer_name.bv_val, 0 );
546 id = c->c_connid = conn_nextid++;
548 c->c_conn_state = SLAP_C_INACTIVE;
549 c->c_struct_state = SLAP_C_USED;
551 c->c_ssf = c->c_transport_ssf = ssf;
555 if ( tls_udp_option == 1 ) {
557 c->c_needs_tls_accept = 1;
560 c->c_needs_tls_accept = 0;
565 slap_sasl_external( c, ssf, authid );
567 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
568 ldap_pvt_thread_mutex_unlock( &connections_mutex );
570 backend_connection_init(c);
575 void connection2anonymous( Connection *c )
577 assert( connections != NULL );
581 ber_len_t max = sockbuf_max_incoming;
582 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
585 if(c->c_authmech.bv_val != NULL ) {
586 free(c->c_authmech.bv_val);
587 c->c_authmech.bv_val = NULL;
589 c->c_authmech.bv_len = 0;
591 if(c->c_dn.bv_val != NULL) {
592 free(c->c_dn.bv_val);
593 c->c_dn.bv_val = NULL;
596 if(c->c_ndn.bv_val != NULL) {
597 free(c->c_ndn.bv_val);
598 c->c_ndn.bv_val = NULL;
602 if(c->c_cdn.bv_val != NULL) {
603 free(c->c_cdn.bv_val);
604 c->c_cdn.bv_val = NULL;
608 c->c_authc_backend = NULL;
609 c->c_authz_backend = NULL;
612 GroupAssertion *g, *n;
613 for (g = c->c_groups; g; g=n)
624 connection_destroy( Connection *c )
626 /* note: connections_mutex should be locked by caller */
629 assert( connections != NULL );
631 assert( c->c_struct_state != SLAP_C_UNUSED );
632 assert( c->c_conn_state != SLAP_C_INVALID );
633 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
635 backend_connection_destroy(c);
640 c->c_activitytime = c->c_starttime = 0;
642 connection2anonymous( c );
644 if(c->c_listener_url.bv_val != NULL) {
645 free(c->c_listener_url.bv_val);
646 c->c_listener_url.bv_val = NULL;
648 c->c_listener_url.bv_len = 0;
650 if(c->c_peer_domain.bv_val != NULL) {
651 free(c->c_peer_domain.bv_val);
652 c->c_peer_domain.bv_val = NULL;
654 c->c_peer_domain.bv_len = 0;
655 if(c->c_peer_name.bv_val != NULL) {
658 * If peer was a domain socket, unlink. Mind you,
659 * they may be un-named. Should we leave this to
662 if (strncmp(c->c_peer_name.bv_val, "PATH=",
663 sizeof("PATH=") - 1) == 0) {
664 char *path = c->c_peer_name.bv_val
665 + sizeof("PATH=") - 1;
666 if (path[0] != '\0') {
670 #endif /* LDAP_PF_LOCAL */
672 free(c->c_peer_name.bv_val);
673 c->c_peer_name.bv_val = NULL;
675 c->c_peer_name.bv_len = 0;
676 if(c->c_sock_name.bv_val != NULL) {
677 free(c->c_sock_name.bv_val);
678 c->c_sock_name.bv_val = NULL;
680 c->c_sock_name.bv_len = 0;
682 c->c_sasl_bind_in_progress = 0;
683 if(c->c_sasl_bind_mech.bv_val != NULL) {
684 free(c->c_sasl_bind_mech.bv_val);
685 c->c_sasl_bind_mech.bv_val = NULL;
687 c->c_sasl_bind_mech.bv_len = 0;
689 slap_sasl_close( c );
691 if ( c->c_currentber != NULL ) {
692 ber_free( c->c_currentber, 1 );
693 c->c_currentber = NULL;
696 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
697 if ( sd != AC_SOCKET_INVALID ) {
698 slapd_remove( sd, 0 );
700 Statslog( LDAP_DEBUG_STATS,
701 "conn=%lu fd=%d closed\n",
702 c->c_connid, sd, 0, 0, 0 );
705 ber_sockbuf_free( c->c_sb );
707 c->c_sb = ber_sockbuf_alloc( );
710 ber_len_t max = sockbuf_max_incoming;
711 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
714 c->c_conn_state = SLAP_C_INVALID;
715 c->c_struct_state = SLAP_C_UNUSED;
718 int connection_state_closing( Connection *c )
720 /* c_mutex must be locked by caller */
724 assert( c->c_struct_state == SLAP_C_USED );
726 state = c->c_conn_state;
728 assert( state != SLAP_C_INVALID );
730 return state == SLAP_C_CLOSING;
733 static void connection_abandon( Connection *c )
735 /* c_mutex must be locked by caller */
739 LDAP_STAILQ_FOREACH(o, &c->c_ops, o_next) {
740 ldap_pvt_thread_mutex_lock( &o->o_abandonmutex );
742 ldap_pvt_thread_mutex_unlock( &o->o_abandonmutex );
745 /* remove pending operations */
746 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
747 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
748 LDAP_STAILQ_NEXT(o, o_next) = NULL;
753 void connection_closing( Connection *c )
755 assert( connections != NULL );
757 assert( c->c_struct_state == SLAP_C_USED );
758 assert( c->c_conn_state != SLAP_C_INVALID );
760 /* c_mutex must be locked by caller */
762 if( c->c_conn_state != SLAP_C_CLOSING ) {
765 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
767 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
768 "connection_closing: conn %lu readying socket %d for close.\n",
771 Debug( LDAP_DEBUG_TRACE,
772 "connection_closing: readying conn=%lu sd=%d for close\n",
773 c->c_connid, sd, 0 );
775 /* update state to closing */
776 c->c_conn_state = SLAP_C_CLOSING;
778 /* don't listen on this port anymore */
779 slapd_clr_read( sd, 1 );
781 /* abandon active operations */
782 connection_abandon( c );
784 /* wake write blocked operations */
785 slapd_clr_write( sd, 1 );
786 ldap_pvt_thread_cond_signal( &c->c_write_cv );
790 static void connection_close( Connection *c )
794 assert( connections != NULL );
796 assert( c->c_struct_state == SLAP_C_USED );
797 assert( c->c_conn_state == SLAP_C_CLOSING );
799 /* note: connections_mutex and c_mutex should be locked by caller */
801 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
802 if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
804 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
805 "connection_close: conn %lu deferring sd %d\n",
808 Debug( LDAP_DEBUG_TRACE,
809 "connection_close: deferring conn=%lu sd=%d\n",
810 c->c_connid, sd, 0 );
816 LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
817 "connection_close: conn %lu sd %d\n",
820 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
821 c->c_connid, sd, 0 );
823 connection_destroy( c );
826 unsigned long connections_nextid(void)
829 assert( connections != NULL );
831 ldap_pvt_thread_mutex_lock( &connections_mutex );
835 ldap_pvt_thread_mutex_unlock( &connections_mutex );
840 Connection* connection_first( ber_socket_t *index )
842 assert( connections != NULL );
843 assert( index != NULL );
845 ldap_pvt_thread_mutex_lock( &connections_mutex );
849 return connection_next(NULL, index);
852 Connection* connection_next( Connection *c, ber_socket_t *index )
854 assert( connections != NULL );
855 assert( index != NULL );
856 assert( *index <= dtblsize );
859 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
864 for(; *index < dtblsize; (*index)++) {
865 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
866 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
874 if( connections[*index].c_struct_state == SLAP_C_USED ) {
875 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
876 c = &connections[(*index)++];
880 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
881 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
885 ldap_pvt_thread_mutex_lock( &c->c_mutex );
891 void connection_done( Connection *c )
893 assert( connections != NULL );
896 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
899 ldap_pvt_thread_mutex_unlock( &connections_mutex );
903 * connection_activity - handle the request operation op on connection
904 * conn. This routine figures out what kind of operation it is and
905 * calls the appropriate stub to handle it.
909 connection_operation( void *arg_v )
912 struct co_arg *arg = arg_v;
913 ber_tag_t tag = arg->co_op->o_tag;
914 Connection *conn = arg->co_conn;
916 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
918 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
920 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
922 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
923 "connection_operation: conn %lu SASL bind in progress (tag=%ld).\n",
924 conn->c_connid, (long)tag ));
926 Debug( LDAP_DEBUG_ANY, "connection_operation: "
927 "error: SASL bind in progress (tag=%ld).\n",
930 send_ldap_result( conn, arg->co_op,
931 rc = LDAP_OPERATIONS_ERROR,
932 NULL, "SASL bind in progress", NULL, NULL );
933 goto operations_error;
938 rc = do_bind( conn, arg->co_op );
941 case LDAP_REQ_UNBIND:
942 rc = do_unbind( conn, arg->co_op );
946 rc = do_add( conn, arg->co_op );
949 case LDAP_REQ_DELETE:
950 rc = do_delete( conn, arg->co_op );
953 case LDAP_REQ_MODRDN:
954 rc = do_modrdn( conn, arg->co_op );
957 case LDAP_REQ_MODIFY:
958 rc = do_modify( conn, arg->co_op );
961 case LDAP_REQ_COMPARE:
962 rc = do_compare( conn, arg->co_op );
965 case LDAP_REQ_SEARCH:
966 rc = do_search( conn, arg->co_op );
969 case LDAP_REQ_ABANDON:
970 rc = do_abandon( conn, arg->co_op );
973 case LDAP_REQ_EXTENDED:
974 rc = do_extended( conn, arg->co_op );
979 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
980 "connection_operation: conn %lu unknown LDAP request 0x%lx\n",
981 conn->c_connid, tag ));
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" );
993 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
996 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
998 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
1000 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1002 conn->c_n_ops_executing--;
1003 conn->c_n_ops_completed++;
1005 LDAP_STAILQ_REMOVE( &conn->c_ops, arg->co_op, slap_op, o_next);
1006 LDAP_STAILQ_NEXT(arg->co_op, o_next) = NULL;
1007 slap_op_free( arg->co_op );
1009 arg->co_conn = NULL;
1010 free( (char *) arg );
1015 case LDAP_REQ_UNBIND:
1016 /* c_mutex is locked */
1017 connection_closing( conn );
1021 conn->c_sasl_bind_in_progress =
1022 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
1024 if( conn->c_conn_state == SLAP_C_BINDING) {
1025 conn->c_conn_state = SLAP_C_ACTIVE;
1029 connection_resched( conn );
1031 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1036 int connection_read(ber_socket_t s)
1040 assert( connections != NULL );
1042 ldap_pvt_thread_mutex_lock( &connections_mutex );
1044 /* get (locked) connection */
1045 c = connection_get( s );
1049 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1050 "connection_read: sock %ld no connection\n",
1053 Debug( LDAP_DEBUG_ANY,
1054 "connection_read(%ld): no connection!\n",
1059 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1065 if( c->c_conn_state == SLAP_C_CLOSING ) {
1067 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1068 "connection_read: conn %lu connection closing, ignoring input\n",
1071 Debug( LDAP_DEBUG_TRACE,
1072 "connection_read(%d): closing, ignoring input for id=%lu\n",
1073 s, c->c_connid, 0 );
1075 connection_return( c );
1076 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1081 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1082 "connection_read: conn %lu checking for input.\n", c->c_connid ));
1084 Debug( LDAP_DEBUG_TRACE,
1085 "connection_read(%d): checking for input on id=%lu\n",
1086 s, c->c_connid, 0 );
1090 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1091 rc = ldap_pvt_tls_accept( c->c_sb, NULL );
1093 #if 0 /* required by next #if 0 */
1099 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1100 "connection_read: conn %lu TLS accept error, error %d\n",
1103 Debug( LDAP_DEBUG_TRACE,
1104 "connection_read(%d): TLS accept error "
1105 "error=%d id=%lu, closing\n",
1106 s, rc, c->c_connid );
1108 c->c_needs_tls_accept = 0;
1109 /* connections_mutex and c_mutex are locked */
1110 connection_closing( c );
1113 /* Drain input before close, to allow SSL error codes
1114 * to propagate to client. */
1121 rc = select(s+1, &rfd, NULL, NULL, &tv);
1123 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN,
1127 connection_close( c );
1129 } else if ( rc == 0 ) {
1133 c->c_needs_tls_accept = 0;
1135 /* we need to let SASL know */
1136 ssl = (void *)ldap_pvt_tls_sb_ctx( c->c_sb );
1138 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1139 if( c->c_tls_ssf > c->c_ssf ) {
1140 c->c_ssf = c->c_tls_ssf;
1143 authid = (char *)ldap_pvt_tls_get_peer( ssl );
1144 slap_sasl_external( c, c->c_tls_ssf, authid );
1146 connection_return( c );
1147 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1152 #ifdef HAVE_CYRUS_SASL
1153 if ( c->c_sasl_layers ) {
1154 c->c_sasl_layers = 0;
1156 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_context );
1158 if( rc != LDAP_SUCCESS ) {
1160 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1161 "connection_read: conn %lu SASL install error %d, closing\n",
1164 Debug( LDAP_DEBUG_TRACE,
1165 "connection_read(%d): SASL install error "
1166 "error=%d id=%lu, closing\n",
1167 s, rc, c->c_connid );
1169 /* connections_mutex and c_mutex are locked */
1170 connection_closing( c );
1171 connection_close( c );
1172 connection_return( c );
1173 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1179 #define CONNECTION_INPUT_LOOP 1
1181 #ifdef DATA_READY_LOOP
1182 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_DATA_READY, NULL ) )
1183 #elif CONNECTION_INPUT_LOOP
1187 /* How do we do this without getting into a busy loop ? */
1188 rc = connection_input( c );
1193 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1194 "connection_read: conn %lu input error %d, closing.\n",
1197 Debug( LDAP_DEBUG_TRACE,
1198 "connection_read(%d): input error=%d id=%lu, closing.\n",
1199 s, rc, c->c_connid );
1201 /* connections_mutex and c_mutex are locked */
1202 connection_closing( c );
1203 connection_close( c );
1204 connection_return( c );
1205 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1209 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1210 slapd_set_read( s, 1 );
1213 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1214 slapd_set_write( s, 1 );
1217 connection_return( c );
1218 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1232 #ifdef LDAP_CONNECTIONLESS
1237 if ( conn->c_currentber == NULL && (conn->c_currentber = ber_alloc())
1240 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1241 "connection_input: conn %lu ber_alloc failed.\n",
1244 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1251 #ifdef LDAP_CONNECTIONLESS
1254 char peername[sizeof("IP=255.255.255.255:65336")];
1255 len = ber_int_sb_read(conn->c_sb, &peeraddr,
1256 sizeof(struct sockaddr));
1257 if (len != sizeof(struct sockaddr))
1259 sprintf( peername, "IP=%s:%d",
1260 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1261 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1262 Statslog( LDAP_DEBUG_STATS,
1263 "conn=%lu UDP request from %s (%s) accepted.\n",
1264 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1267 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1268 if ( tag != LDAP_TAG_MESSAGE ) {
1272 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1275 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1276 "connection_input: conn %lu ber_get_next failed, errno %d (%s).\n",
1277 conn->c_connid, err, sock_errstr(err) ));
1279 Debug( LDAP_DEBUG_TRACE,
1280 "ber_get_next on fd %d failed errno=%d (%s)\n",
1281 sd, err, sock_errstr(err) );
1283 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1284 /* log, close and send error */
1285 ber_free( conn->c_currentber, 1 );
1286 conn->c_currentber = NULL;
1293 ber = conn->c_currentber;
1294 conn->c_currentber = NULL;
1296 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1297 /* log, close and send error */
1299 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1300 "connection_input: conn %lu ber_get_int returns 0x%lx.\n",
1301 conn->c_connid, tag ));
1303 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0,
1310 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1311 /* log, close and send error */
1313 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1314 "connection_input: conn %lu ber_peek_tag returns 0x%lx.\n",
1315 conn->c_connid, tag ));
1317 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0,
1325 #ifdef LDAP_CONNECTIONLESS
1326 if (conn->c_is_udp) {
1327 if (tag == LBER_OCTETSTRING) {
1328 ber_get_stringa( ber, &cdn );
1329 tag = ber_peek_tag(ber, &len);
1331 if (tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH) {
1333 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1334 "connection_input: conn %lu invalid req for UDP 0x%lx.\n",
1335 conn->c_connid, tag ));
1337 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0,
1345 if(tag == LDAP_REQ_BIND) {
1346 /* immediately abandon all exiting operations upon BIND */
1347 connection_abandon( conn );
1350 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1352 #ifdef LDAP_CONNECTIONLESS
1353 op->o_peeraddr = peeraddr;
1355 ber_str2bv( cdn, 0, 1, &op->o_dn );
1356 op->o_protocol = LDAP_VERSION2;
1359 if ( conn->c_conn_state == SLAP_C_BINDING
1360 || conn->c_conn_state == SLAP_C_CLOSING )
1363 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1364 "connection_input: conn %lu deferring operation\n",
1367 Debug( LDAP_DEBUG_ANY, "deferring operation\n", 0, 0, 0 );
1369 conn->c_n_ops_pending++;
1370 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1373 conn->c_n_ops_executing++;
1374 connection_op_activate( conn, op );
1378 if ( conn->c_struct_state != SLAP_C_USED ) {
1379 /* connection must have got closed underneath us */
1383 assert( conn->c_struct_state == SLAP_C_USED );
1389 connection_resched( Connection *conn )
1393 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1396 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1398 /* us trylock to avoid possible deadlock */
1399 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1403 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1404 "connection_resched: conn %lu reaquiring locks.\n",
1407 Debug( LDAP_DEBUG_TRACE,
1408 "connection_resched: reaquiring locks conn=%lu sd=%d\n",
1409 conn->c_connid, sd, 0 );
1412 * reaquire locks in the right order...
1413 * this may allow another thread to close this connection,
1414 * so recheck state below.
1416 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1417 ldap_pvt_thread_mutex_lock( &connections_mutex );
1418 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1421 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1423 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1424 "connection_resched: conn %lu closed by other thread.\n",
1427 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1428 "closed by other thread conn=%lu sd=%d\n",
1429 conn->c_connid, sd, 0 );
1433 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1434 "connection_resched: conn %lu attempting closing.\n",
1437 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1438 "attempting closing conn=%lu sd=%d\n",
1439 conn->c_connid, sd, 0 );
1441 connection_close( conn );
1444 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1448 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1449 /* other states need different handling */
1453 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1454 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1455 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1456 /* pending operations should not be marked for abandonment */
1457 assert(!op->o_abandon);
1459 conn->c_n_ops_pending--;
1460 conn->c_n_ops_executing++;
1462 connection_op_activate( conn, op );
1464 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1471 static int connection_op_activate( Connection *conn, Operation *op )
1475 ber_tag_t tag = op->o_tag;
1477 if(tag == LDAP_REQ_BIND) {
1478 conn->c_conn_state = SLAP_C_BINDING;
1481 arg = (struct co_arg *) ch_malloc( sizeof(struct co_arg) );
1482 arg->co_conn = conn;
1485 if (!arg->co_op->o_dn.bv_len) {
1486 arg->co_op->o_authz = conn->c_authz;
1487 arg->co_op->o_dn.bv_val = ch_strdup( conn->c_dn.bv_val ?
1488 conn->c_dn.bv_val : "" );
1489 arg->co_op->o_ndn.bv_val = ch_strdup( conn->c_ndn.bv_val ?
1490 conn->c_ndn.bv_val : "" );
1492 arg->co_op->o_authtype = conn->c_authtype;
1493 ber_dupbv( &arg->co_op->o_authmech, &conn->c_authmech );
1495 if (!arg->co_op->o_protocol) {
1496 arg->co_op->o_protocol = conn->c_protocol
1497 ? conn->c_protocol : LDAP_VERSION3;
1499 arg->co_op->o_connid = conn->c_connid;
1501 LDAP_STAILQ_INSERT_TAIL( &conn->c_ops, arg->co_op, o_next );
1503 status = ldap_pvt_thread_pool_submit( &connection_pool,
1504 connection_operation, (void *) arg );
1506 if ( status != 0 ) {
1508 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1509 "connection_op_activate: conn %lu thread pool submit failed.\n",
1512 Debug( LDAP_DEBUG_ANY,
1513 "ldap_pvt_thread_pool_submit failed (%d)\n", status, 0, 0 );
1515 /* should move op to pending list */
1521 int connection_write(ber_socket_t s)
1524 assert( connections != NULL );
1526 ldap_pvt_thread_mutex_lock( &connections_mutex );
1528 c = connection_get( s );
1530 slapd_clr_write( s, 0);
1534 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1535 "connection_write: sock %ld no connection!\n",(long)s));
1537 Debug( LDAP_DEBUG_ANY,
1538 "connection_write(%ld): no connection!\n",
1542 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1549 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1550 "connection_write conn %lu waking output.\n",
1553 Debug( LDAP_DEBUG_TRACE,
1554 "connection_write(%d): waking output for id=%lu\n",
1555 s, c->c_connid, 0 );
1557 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1559 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) )
1560 slapd_set_read( s, 1 );
1561 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) )
1562 slapd_set_write( s, 1 );
1563 connection_return( c );
1564 ldap_pvt_thread_mutex_unlock( &connections_mutex );