3 * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
12 #include <ac/socket.h>
14 #include <ac/string.h>
16 #include <ac/unistd.h>
22 /* protected by connections_mutex */
23 static ldap_pvt_thread_mutex_t connections_mutex;
24 static Connection *connections = NULL;
25 static unsigned long conn_nextid = 0;
27 /* structure state (protected by connections_mutex) */
28 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
29 #define SLAP_C_UNUSED 0x01
30 #define SLAP_C_USED 0x02
32 /* connection state (protected by c_mutex ) */
33 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
34 #define SLAP_C_INACTIVE 0x01 /* zero threads */
35 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
36 #define SLAP_C_BINDING 0x03 /* binding */
37 #define SLAP_C_CLOSING 0x04 /* closing */
40 connection_state2str( int state )
43 case SLAP_C_INVALID: return "!";
44 case SLAP_C_INACTIVE: return "|";
45 case SLAP_C_ACTIVE: return "";
46 case SLAP_C_BINDING: return "B";
47 case SLAP_C_CLOSING: return "C";
53 static Connection* connection_get( ber_socket_t s );
55 static int connection_input( Connection *c );
56 static void connection_close( Connection *c );
58 static int connection_op_activate( Connection *conn, Operation *op );
59 static int connection_resched( Connection *conn );
60 static void connection_abandon( Connection *conn );
61 static void connection_destroy( Connection *c );
63 static ldap_pvt_thread_start_t connection_operation;
71 * Initialize connection management infrastructure.
73 int connections_init(void)
75 assert( connections == NULL );
77 if( connections != NULL) {
79 LDAP_LOG( CONNECTION, INFO,
80 "connections_init: already initialized.\n", 0, 0, 0 );
82 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
88 /* should check return of every call */
89 ldap_pvt_thread_mutex_init( &connections_mutex );
91 connections = (Connection *) calloc( dtblsize, sizeof(Connection) );
93 if( connections == NULL ) {
95 LDAP_LOG( CONNECTION, ERR,
96 "connections_init: allocation (%d * %ld) of connection "
97 "array failed\n", dtblsize, (long) sizeof(Connection), 0 );
99 Debug( LDAP_DEBUG_ANY,
100 "connections_init: allocation (%d*%ld) of connection array failed\n",
101 dtblsize, (long) sizeof(Connection), 0 );
106 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
107 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
110 * per entry initialization of the Connection array initialization
111 * will be done by connection_init()
118 * Destroy connection management infrastructure.
120 int connections_destroy(void)
124 /* should check return of every call */
126 if( connections == NULL) {
128 LDAP_LOG( CONNECTION, INFO,
129 "connections_destroy: nothing to destroy.\n", 0, 0, 0 );
131 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
137 for ( i = 0; i < dtblsize; i++ ) {
138 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
139 ber_sockbuf_free( connections[i].c_sb );
140 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
141 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
142 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
149 ldap_pvt_thread_mutex_destroy( &connections_mutex );
154 * shutdown all connections
156 int connections_shutdown(void)
160 ldap_pvt_thread_mutex_lock( &connections_mutex );
162 for ( i = 0; i < dtblsize; i++ ) {
163 if( connections[i].c_struct_state != SLAP_C_USED ) {
167 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
169 /* connections_mutex and c_mutex are locked */
170 connection_closing( &connections[i] );
171 connection_close( &connections[i] );
173 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
176 ldap_pvt_thread_mutex_unlock( &connections_mutex );
182 * Timeout idle connections.
184 int connections_timeout_idle(time_t now)
190 for( c = connection_first( &connindex );
192 c = connection_next( c, &connindex ) )
194 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
196 connection_closing( c );
197 connection_close( c );
201 connection_done( c );
206 static Connection* connection_get( ber_socket_t s )
208 /* connections_mutex should be locked by caller */
213 LDAP_LOG( CONNECTION, ENTRY, "connection_get: socket %ld\n", (long)s, 0, 0 );
215 Debug( LDAP_DEBUG_ARGS,
216 "connection_get(%ld)\n",
220 assert( connections != NULL );
222 if(s == AC_SOCKET_INVALID) {
229 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
236 for(i=0; i<dtblsize; i++) {
237 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
238 assert( connections[i].c_conn_state == SLAP_C_INVALID );
239 assert( connections[i].c_sb == 0 );
243 ber_sockbuf_ctrl( connections[i].c_sb,
244 LBER_SB_OPT_GET_FD, &sd );
246 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
247 assert( connections[i].c_conn_state == SLAP_C_INVALID );
248 assert( sd == AC_SOCKET_INVALID );
252 /* state can actually change from used -> unused by resched,
253 * so don't assert details here.
267 ldap_pvt_thread_mutex_lock( &c->c_mutex );
269 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
270 if( c->c_struct_state != SLAP_C_USED ) {
271 /* connection must have been closed due to resched */
273 assert( c->c_conn_state == SLAP_C_INVALID );
274 assert( sd == AC_SOCKET_INVALID );
277 LDAP_LOG( CONNECTION, ARGS,
278 "connection_get: connection %d not used\n", s, 0, 0 );
280 Debug( LDAP_DEBUG_TRACE,
281 "connection_get(%d): connection not used\n",
285 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
290 LDAP_LOG( CONNECTION, RESULTS,
291 "connection_get: get for %d got connid %lu\n", s, c->c_connid, 0 );
293 Debug( LDAP_DEBUG_TRACE,
294 "connection_get(%d): got connid=%lu\n",
300 assert( c->c_struct_state == SLAP_C_USED );
301 assert( c->c_conn_state != SLAP_C_INVALID );
302 assert( sd != AC_SOCKET_INVALID );
305 c->c_activitytime = slap_get_time();
307 if( global_idletimeout > 0 ) {
308 c->c_activitytime = slap_get_time();
316 static void connection_return( Connection *c )
318 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
321 long connection_init(
325 const char* peername,
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, INFO,
347 "connection_init: init of socket %ld invalid.\n", (long)s, 0, 0 );
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, 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;
423 c->c_listener_url.bv_val = NULL;
424 c->c_listener_url.bv_len = 0;
425 c->c_peer_domain.bv_val = NULL;
426 c->c_peer_domain.bv_len = 0;
427 c->c_peer_name.bv_val = NULL;
428 c->c_peer_name.bv_len = 0;
429 c->c_sock_name.bv_val = NULL;
430 c->c_sock_name.bv_len = 0;
432 LDAP_STAILQ_INIT(&c->c_ops);
433 LDAP_STAILQ_INIT(&c->c_pending_ops);
435 c->c_sasl_bind_mech.bv_val = NULL;
436 c->c_sasl_bind_mech.bv_len = 0;
437 c->c_sasl_context = NULL;
438 c->c_sasl_extra = NULL;
439 c->c_sasl_bindop = NULL;
441 c->c_sb = ber_sockbuf_alloc( );
444 ber_len_t max = sockbuf_max_incoming;
445 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
448 c->c_currentber = NULL;
450 /* should check status of thread calls */
451 ldap_pvt_thread_mutex_init( &c->c_mutex );
452 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
453 ldap_pvt_thread_cond_init( &c->c_write_cv );
455 c->c_struct_state = SLAP_C_UNUSED;
458 ldap_pvt_thread_mutex_lock( &c->c_mutex );
460 assert( c->c_struct_state == SLAP_C_UNUSED );
461 assert( c->c_authmech.bv_val == NULL );
462 assert( c->c_dn.bv_val == NULL );
463 assert( c->c_ndn.bv_val == NULL );
464 assert( c->c_groups == NULL );
465 assert( c->c_listener_url.bv_val == NULL );
466 assert( c->c_peer_domain.bv_val == NULL );
467 assert( c->c_peer_name.bv_val == NULL );
468 assert( c->c_sock_name.bv_val == NULL );
469 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
470 assert( LDAP_STAILQ_EMPTY(&c->c_pending_ops) );
471 assert( c->c_sasl_bind_mech.bv_val == NULL );
472 assert( c->c_sasl_context == NULL );
473 assert( c->c_sasl_extra == NULL );
474 assert( c->c_sasl_bindop == NULL );
475 assert( c->c_currentber == NULL );
477 ber_str2bv( url, 0, 1, &c->c_listener_url );
478 ber_str2bv( dnsname, 0, 1, &c->c_peer_domain );
479 ber_str2bv( peername, 0, 1, &c->c_peer_name );
480 ber_str2bv( sockname, 0, 1, &c->c_sock_name );
482 c->c_n_ops_received = 0;
483 c->c_n_ops_executing = 0;
484 c->c_n_ops_pending = 0;
485 c->c_n_ops_completed = 0;
491 /* set to zero until bind, implies LDAP_VERSION3 */
495 c->c_activitytime = c->c_starttime = slap_get_time();
497 if( global_idletimeout > 0 ) {
498 c->c_activitytime = c->c_starttime = slap_get_time();
502 #ifdef LDAP_CONNECTIONLESS
504 if (tls_udp_option == 2)
508 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
509 LBER_SBIOD_LEVEL_PROVIDER, (void*)"udp_" );
511 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_udp,
512 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
513 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
514 LBER_SBIOD_LEVEL_PROVIDER, NULL );
519 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
520 LBER_SBIOD_LEVEL_PROVIDER, (void*)"tcp_" );
522 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp,
523 LBER_SBIOD_LEVEL_PROVIDER, (void *)&s );
527 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug,
528 INT_MAX, (void*)"ldap_" );
531 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK,
532 c /* non-NULL */ ) < 0 )
535 LDAP_LOG( CONNECTION, INFO,
536 "connection_init: conn %lu set nonblocking failed\n",
539 Debug( LDAP_DEBUG_ANY,
540 "connection_init(%d, %s): set nonblocking failed\n",
541 s, c->c_peer_name.bv_val, 0 );
545 id = c->c_connid = conn_nextid++;
547 c->c_conn_state = SLAP_C_INACTIVE;
548 c->c_struct_state = SLAP_C_USED;
550 c->c_ssf = c->c_transport_ssf = ssf;
554 if ( tls_udp_option == 1 ) {
556 c->c_needs_tls_accept = 1;
559 c->c_needs_tls_accept = 0;
564 slap_sasl_external( c, ssf, authid );
566 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
567 ldap_pvt_thread_mutex_unlock( &connections_mutex );
569 backend_connection_init(c);
574 void connection2anonymous( Connection *c )
576 assert( connections != NULL );
580 ber_len_t max = sockbuf_max_incoming;
581 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
584 if(c->c_authmech.bv_val != NULL ) {
585 free(c->c_authmech.bv_val);
586 c->c_authmech.bv_val = NULL;
588 c->c_authmech.bv_len = 0;
590 if(c->c_dn.bv_val != NULL) {
591 free(c->c_dn.bv_val);
592 c->c_dn.bv_val = NULL;
595 if(c->c_ndn.bv_val != NULL) {
596 free(c->c_ndn.bv_val);
597 c->c_ndn.bv_val = NULL;
601 c->c_authz_backend = NULL;
604 GroupAssertion *g, *n;
605 for (g = c->c_groups; g; g=n) {
614 connection_destroy( Connection *c )
616 /* note: connections_mutex should be locked by caller */
618 unsigned long connid;
620 assert( connections != NULL );
622 assert( c->c_struct_state != SLAP_C_UNUSED );
623 assert( c->c_conn_state != SLAP_C_INVALID );
624 assert( LDAP_STAILQ_EMPTY(&c->c_ops) );
626 /* only for stats (print -1 as "%lu" may give unexpected results ;) */
627 connid = c->c_connid;
629 backend_connection_destroy(c);
634 c->c_activitytime = c->c_starttime = 0;
636 connection2anonymous( c );
638 if(c->c_listener_url.bv_val != NULL) {
639 free(c->c_listener_url.bv_val);
640 c->c_listener_url.bv_val = NULL;
642 c->c_listener_url.bv_len = 0;
644 if(c->c_peer_domain.bv_val != NULL) {
645 free(c->c_peer_domain.bv_val);
646 c->c_peer_domain.bv_val = NULL;
648 c->c_peer_domain.bv_len = 0;
649 if(c->c_peer_name.bv_val != NULL) {
652 * If peer was a domain socket, unlink. Mind you,
653 * they may be un-named. Should we leave this to
656 if (strncmp(c->c_peer_name.bv_val, "PATH=",
657 sizeof("PATH=") - 1) == 0) {
658 char *path = c->c_peer_name.bv_val
659 + sizeof("PATH=") - 1;
660 if (path[0] != '\0') {
664 #endif /* LDAP_PF_LOCAL */
666 free(c->c_peer_name.bv_val);
667 c->c_peer_name.bv_val = NULL;
669 c->c_peer_name.bv_len = 0;
670 if(c->c_sock_name.bv_val != NULL) {
671 free(c->c_sock_name.bv_val);
672 c->c_sock_name.bv_val = NULL;
674 c->c_sock_name.bv_len = 0;
676 c->c_sasl_bind_in_progress = 0;
677 if(c->c_sasl_bind_mech.bv_val != NULL) {
678 free(c->c_sasl_bind_mech.bv_val);
679 c->c_sasl_bind_mech.bv_val = NULL;
681 c->c_sasl_bind_mech.bv_len = 0;
683 slap_sasl_close( c );
685 if ( c->c_currentber != NULL ) {
686 ber_free( c->c_currentber, 1 );
687 c->c_currentber = NULL;
690 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
691 if ( sd != AC_SOCKET_INVALID ) {
692 slapd_remove( sd, 0 );
694 Statslog( LDAP_DEBUG_STATS,
695 "conn=%lu fd=%d closed\n",
696 connid, sd, 0, 0, 0 );
699 ber_sockbuf_free( c->c_sb );
701 c->c_sb = ber_sockbuf_alloc( );
704 ber_len_t max = sockbuf_max_incoming;
705 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_MAX_INCOMING, &max );
708 c->c_conn_state = SLAP_C_INVALID;
709 c->c_struct_state = SLAP_C_UNUSED;
712 int connection_state_closing( Connection *c )
714 /* c_mutex must be locked by caller */
718 assert( c->c_struct_state == SLAP_C_USED );
720 state = c->c_conn_state;
722 assert( state != SLAP_C_INVALID );
724 return state == SLAP_C_CLOSING;
727 static void connection_abandon( Connection *c )
729 /* c_mutex must be locked by caller */
733 LDAP_STAILQ_FOREACH(o, &c->c_ops, o_next) {
737 /* remove pending operations */
738 while ( (o = LDAP_STAILQ_FIRST( &c->c_pending_ops )) != NULL) {
739 LDAP_STAILQ_REMOVE_HEAD( &c->c_pending_ops, o_next );
740 LDAP_STAILQ_NEXT(o, o_next) = NULL;
745 void connection_closing( Connection *c )
747 assert( connections != NULL );
749 assert( c->c_struct_state == SLAP_C_USED );
750 assert( c->c_conn_state != SLAP_C_INVALID );
752 /* c_mutex must be locked by caller */
754 if( c->c_conn_state != SLAP_C_CLOSING ) {
757 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
759 LDAP_LOG( CONNECTION, DETAIL1,
760 "connection_closing: conn %lu readying socket %d for close.\n",
761 c->c_connid, sd, 0 );
763 Debug( LDAP_DEBUG_TRACE,
764 "connection_closing: readying conn=%lu sd=%d for close\n",
765 c->c_connid, sd, 0 );
767 /* update state to closing */
768 c->c_conn_state = SLAP_C_CLOSING;
770 /* don't listen on this port anymore */
771 slapd_clr_read( sd, 1 );
773 /* abandon active operations */
774 connection_abandon( c );
776 /* wake write blocked operations */
777 slapd_clr_write( sd, 1 );
778 ldap_pvt_thread_cond_signal( &c->c_write_cv );
782 static void connection_close( Connection *c )
786 assert( connections != NULL );
788 assert( c->c_struct_state == SLAP_C_USED );
789 assert( c->c_conn_state == SLAP_C_CLOSING );
791 /* note: connections_mutex and c_mutex should be locked by caller */
793 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
794 if( !LDAP_STAILQ_EMPTY(&c->c_ops) ) {
796 LDAP_LOG( CONNECTION, DETAIL1,
797 "connection_close: conn %lu deferring sd %d\n",
798 c->c_connid, sd, 0 );
800 Debug( LDAP_DEBUG_TRACE,
801 "connection_close: deferring conn=%lu sd=%d\n",
802 c->c_connid, sd, 0 );
808 LDAP_LOG( CONNECTION, RESULTS,
809 "connection_close: conn %lu sd %d\n", c->c_connid, sd, 0 );
811 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%lu sd=%d\n",
812 c->c_connid, sd, 0 );
814 connection_destroy( c );
817 unsigned long connections_nextid(void)
820 assert( connections != NULL );
822 ldap_pvt_thread_mutex_lock( &connections_mutex );
826 ldap_pvt_thread_mutex_unlock( &connections_mutex );
831 Connection* connection_first( ber_socket_t *index )
833 assert( connections != NULL );
834 assert( index != NULL );
836 ldap_pvt_thread_mutex_lock( &connections_mutex );
840 return connection_next(NULL, index);
843 Connection* connection_next( Connection *c, ber_socket_t *index )
845 assert( connections != NULL );
846 assert( index != NULL );
847 assert( *index <= dtblsize );
850 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
855 for(; *index < dtblsize; (*index)++) {
856 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
857 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
865 if( connections[*index].c_struct_state == SLAP_C_USED ) {
866 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
867 c = &connections[(*index)++];
871 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
872 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
876 ldap_pvt_thread_mutex_lock( &c->c_mutex );
882 void connection_done( Connection *c )
884 assert( connections != NULL );
887 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
890 ldap_pvt_thread_mutex_unlock( &connections_mutex );
894 * connection_activity - handle the request operation op on connection
895 * conn. This routine figures out what kind of operation it is and
896 * calls the appropriate stub to handle it.
900 #define INCR_OP(var,index) \
902 ldap_pvt_thread_mutex_lock( &num_ops_mutex ); \
904 ldap_pvt_thread_mutex_unlock( &num_ops_mutex ); \
906 #else /* !SLAPD_MONITOR */
907 #define INCR_OP(var,index)
908 #endif /* !SLAPD_MONITOR */
911 connection_operation( void *ctx, void *arg_v )
914 struct co_arg *arg = arg_v;
915 ber_tag_t tag = arg->co_op->o_tag;
917 ber_tag_t oldtag = tag;
918 #endif /* SLAPD_MONITOR */
919 Connection *conn = arg->co_conn;
921 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
923 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
925 arg->co_op->o_threadctx = ctx;
927 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
929 LDAP_LOG( CONNECTION, ERR,
930 "connection_operation: conn %lu SASL bind in progress (tag=%ld).\n",
931 conn->c_connid, (long)tag, 0 );
933 Debug( LDAP_DEBUG_ANY, "connection_operation: "
934 "error: SASL bind in progress (tag=%ld).\n",
937 send_ldap_result( conn, arg->co_op,
938 rc = LDAP_OPERATIONS_ERROR,
939 NULL, "SASL bind in progress", NULL, NULL );
940 goto operations_error;
945 INCR_OP(num_ops_initiated_, SLAP_OP_BIND);
946 rc = do_bind( conn, arg->co_op );
949 case LDAP_REQ_UNBIND:
950 INCR_OP(num_ops_initiated_, SLAP_OP_UNBIND);
951 rc = do_unbind( conn, arg->co_op );
955 INCR_OP(num_ops_initiated_, SLAP_OP_ADD);
956 rc = do_add( conn, arg->co_op );
959 case LDAP_REQ_DELETE:
960 INCR_OP(num_ops_initiated_, SLAP_OP_DELETE);
961 rc = do_delete( conn, arg->co_op );
964 case LDAP_REQ_MODRDN:
965 INCR_OP(num_ops_initiated_, SLAP_OP_MODRDN);
966 rc = do_modrdn( conn, arg->co_op );
969 case LDAP_REQ_MODIFY:
970 INCR_OP(num_ops_initiated_, SLAP_OP_MODIFY);
971 rc = do_modify( conn, arg->co_op );
974 case LDAP_REQ_COMPARE:
975 INCR_OP(num_ops_initiated_, SLAP_OP_COMPARE);
976 rc = do_compare( conn, arg->co_op );
979 case LDAP_REQ_SEARCH:
980 INCR_OP(num_ops_initiated_, SLAP_OP_SEARCH);
981 rc = do_search( conn, arg->co_op );
984 case LDAP_REQ_ABANDON:
985 INCR_OP(num_ops_initiated_, SLAP_OP_ABANDON);
986 rc = do_abandon( conn, arg->co_op );
989 case LDAP_REQ_EXTENDED:
990 INCR_OP(num_ops_initiated_, SLAP_OP_EXTENDED);
991 rc = do_extended( conn, arg->co_op );
996 LDAP_LOG( CONNECTION, INFO,
997 "connection_operation: conn %lu unknown LDAP request 0x%lx\n",
998 conn->c_connid, tag, 0 );
1000 Debug( LDAP_DEBUG_ANY, "unknown LDAP request 0x%lx\n",
1003 arg->co_op->o_tag = LBER_ERROR;
1004 send_ldap_disconnect( conn, arg->co_op,
1005 LDAP_PROTOCOL_ERROR, "unknown LDAP request" );
1010 #ifdef SLAPD_MONITOR
1012 #endif /* SLAPD_MONITOR */
1013 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
1016 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
1017 num_ops_completed++;
1018 #ifdef SLAPD_MONITOR
1021 num_ops_completed_[SLAP_OP_BIND]++;
1023 case LDAP_REQ_UNBIND:
1024 num_ops_completed_[SLAP_OP_UNBIND]++;
1027 num_ops_completed_[SLAP_OP_ADD]++;
1029 case LDAP_REQ_DELETE:
1030 num_ops_completed_[SLAP_OP_DELETE]++;
1032 case LDAP_REQ_MODRDN:
1033 num_ops_completed_[SLAP_OP_MODRDN]++;
1035 case LDAP_REQ_MODIFY:
1036 num_ops_completed_[SLAP_OP_MODIFY]++;
1038 case LDAP_REQ_COMPARE:
1039 num_ops_completed_[SLAP_OP_COMPARE]++;
1041 case LDAP_REQ_SEARCH:
1042 num_ops_completed_[SLAP_OP_SEARCH]++;
1044 case LDAP_REQ_ABANDON:
1045 num_ops_completed_[SLAP_OP_ABANDON]++;
1047 case LDAP_REQ_EXTENDED:
1048 num_ops_completed_[SLAP_OP_EXTENDED]++;
1051 #endif /* SLAPD_MONITOR */
1052 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
1054 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1056 conn->c_n_ops_executing--;
1057 conn->c_n_ops_completed++;
1059 LDAP_STAILQ_REMOVE( &conn->c_ops, arg->co_op, slap_op, o_next);
1060 LDAP_STAILQ_NEXT(arg->co_op, o_next) = NULL;
1061 slap_op_free( arg->co_op );
1063 arg->co_conn = NULL;
1064 free( (char *) arg );
1069 case LDAP_REQ_UNBIND:
1070 /* c_mutex is locked */
1071 connection_closing( conn );
1075 conn->c_sasl_bind_in_progress =
1076 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
1078 if( conn->c_conn_state == SLAP_C_BINDING) {
1079 conn->c_conn_state = SLAP_C_ACTIVE;
1083 connection_resched( conn );
1085 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1090 int connection_read(ber_socket_t s)
1095 assert( connections != NULL );
1097 ldap_pvt_thread_mutex_lock( &connections_mutex );
1099 /* get (locked) connection */
1100 c = connection_get( s );
1104 LDAP_LOG( CONNECTION, INFO,
1105 "connection_read: sock %ld no connection\n", (long)s, 0, 0 );
1107 Debug( LDAP_DEBUG_ANY,
1108 "connection_read(%ld): no connection!\n",
1113 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1119 if( c->c_conn_state == SLAP_C_CLOSING ) {
1121 LDAP_LOG( CONNECTION, INFO,
1122 "connection_read: conn %lu connection closing, ignoring input\n",
1123 c->c_connid, 0, 0 );
1125 Debug( LDAP_DEBUG_TRACE,
1126 "connection_read(%d): closing, ignoring input for id=%lu\n",
1127 s, c->c_connid, 0 );
1129 connection_return( c );
1130 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1135 LDAP_LOG( CONNECTION, DETAIL1,
1136 "connection_read: conn %lu checking for input.\n",
1137 c->c_connid, 0, 0 );
1139 Debug( LDAP_DEBUG_TRACE,
1140 "connection_read(%d): checking for input on id=%lu\n",
1141 s, c->c_connid, 0 );
1145 if ( c->c_is_tls && c->c_needs_tls_accept ) {
1146 rc = ldap_pvt_tls_accept( c->c_sb, NULL );
1148 #if 0 /* required by next #if 0 */
1154 LDAP_LOG( CONNECTION, ERR,
1155 "connection_read: conn %lu TLS accept error, error %d\n",
1156 c->c_connid, rc, 0 );
1158 Debug( LDAP_DEBUG_TRACE,
1159 "connection_read(%d): TLS accept error "
1160 "error=%d id=%lu, closing\n",
1161 s, rc, c->c_connid );
1163 c->c_needs_tls_accept = 0;
1164 /* connections_mutex and c_mutex are locked */
1165 connection_closing( c );
1168 /* Drain input before close, to allow SSL error codes
1169 * to propagate to client. */
1175 rc = select(s+1, &rfd, NULL, NULL, &tv);
1177 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN, NULL);
1181 connection_close( c );
1183 } else if ( rc == 0 ) {
1185 struct berval authid = { 0, NULL };
1187 c->c_needs_tls_accept = 0;
1189 /* we need to let SASL know */
1190 ssl = ldap_pvt_tls_sb_ctx( c->c_sb );
1192 c->c_tls_ssf = (slap_ssf_t) ldap_pvt_tls_get_strength( ssl );
1193 if( c->c_tls_ssf > c->c_ssf ) {
1194 c->c_ssf = c->c_tls_ssf;
1197 rc = dnX509peerNormalize( ssl, &authid );
1198 if ( rc != LDAP_SUCCESS ) {
1200 LDAP_LOG( CONNECTION, INFO,
1201 "connection_read: conn %lu unable to get TLS client DN, "
1202 "error %d\n", c->c_connid, rc, 0 );
1204 Debug( LDAP_DEBUG_TRACE,
1205 "connection_read(%d): unable to get TLS client DN "
1206 "error=%d id=%lu\n",
1207 s, rc, c->c_connid );
1210 slap_sasl_external( c, c->c_tls_ssf, authid.bv_val );
1211 if ( authid.bv_val ) free( authid.bv_val );
1214 /* if success and data is ready, fall thru to data input loop */
1216 !ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DATA_READY, NULL ) )
1218 connection_return( c );
1219 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1225 #ifdef HAVE_CYRUS_SASL
1226 if ( c->c_sasl_layers ) {
1227 c->c_sasl_layers = 0;
1229 rc = ldap_pvt_sasl_install( c->c_sb, c->c_sasl_context );
1231 if( rc != LDAP_SUCCESS ) {
1233 LDAP_LOG( CONNECTION, ERR,
1234 "connection_read: conn %lu SASL install error %d, closing\n",
1235 c->c_connid, rc, 0 );
1237 Debug( LDAP_DEBUG_TRACE,
1238 "connection_read(%d): SASL install error "
1239 "error=%d id=%lu, closing\n",
1240 s, rc, c->c_connid );
1242 /* connections_mutex and c_mutex are locked */
1243 connection_closing( c );
1244 connection_close( c );
1245 connection_return( c );
1246 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1252 #define CONNECTION_INPUT_LOOP 1
1254 #ifdef DATA_READY_LOOP
1255 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_DATA_READY, NULL ) )
1256 #elif CONNECTION_INPUT_LOOP
1260 /* How do we do this without getting into a busy loop ? */
1261 rc = connection_input( c );
1266 LDAP_LOG( CONNECTION, ERR,
1267 "connection_read: conn %lu input error %d, closing.\n",
1268 c->c_connid, rc, 0 );
1270 Debug( LDAP_DEBUG_TRACE,
1271 "connection_read(%d): input error=%d id=%lu, closing.\n",
1272 s, rc, c->c_connid );
1274 /* connections_mutex and c_mutex are locked */
1275 connection_closing( c );
1276 connection_close( c );
1277 connection_return( c );
1278 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1282 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) ) {
1283 slapd_set_read( s, 1 );
1286 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) ) {
1287 slapd_set_write( s, 1 );
1290 connection_return( c );
1291 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1305 #ifdef LDAP_CONNECTIONLESS
1310 if ( conn->c_currentber == NULL && (conn->c_currentber = ber_alloc())
1313 LDAP_LOG( CONNECTION, ERR,
1314 "connection_input: conn %lu ber_alloc failed.\n",
1315 conn->c_connid, 0, 0 );
1317 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
1324 #ifdef LDAP_CONNECTIONLESS
1327 char peername[sizeof("IP=255.255.255.255:65336")];
1328 len = ber_int_sb_read(conn->c_sb, &peeraddr,
1329 sizeof(struct sockaddr));
1330 if (len != sizeof(struct sockaddr))
1332 sprintf( peername, "IP=%s:%d",
1333 inet_ntoa( peeraddr.sa_in_addr.sin_addr ),
1334 (unsigned) ntohs( peeraddr.sa_in_addr.sin_port ) );
1335 Statslog( LDAP_DEBUG_STATS,
1336 "conn=%lu UDP request from %s (%s) accepted.\n",
1337 conn->c_connid, peername, conn->c_sock_name.bv_val, 0, 0 );
1340 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
1341 if ( tag != LDAP_TAG_MESSAGE ) {
1345 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1348 LDAP_LOG( CONNECTION, ERR,
1349 "connection_input: conn %lu ber_get_next failed, errno %d (%s).\n",
1350 conn->c_connid, err, sock_errstr(err) );
1352 Debug( LDAP_DEBUG_TRACE,
1353 "ber_get_next on fd %d failed errno=%d (%s)\n",
1354 sd, err, sock_errstr(err) );
1356 if ( err != EWOULDBLOCK && err != EAGAIN ) {
1357 /* log, close and send error */
1358 ber_free( conn->c_currentber, 1 );
1359 conn->c_currentber = NULL;
1366 ber = conn->c_currentber;
1367 conn->c_currentber = NULL;
1369 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1370 /* log, close and send error */
1372 LDAP_LOG( CONNECTION, ERR,
1373 "connection_input: conn %lu ber_get_int returns 0x%lx.\n",
1374 conn->c_connid, tag, 0 );
1376 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0,
1383 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1384 /* log, close and send error */
1386 LDAP_LOG( CONNECTION, ERR,
1387 "connection_input: conn %lu ber_peek_tag returns 0x%lx.\n",
1388 conn->c_connid, tag, 0 );
1390 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0,
1398 #ifdef LDAP_CONNECTIONLESS
1399 if (conn->c_is_udp) {
1400 if (tag == LBER_OCTETSTRING) {
1401 ber_get_stringa( ber, &cdn );
1402 tag = ber_peek_tag(ber, &len);
1404 if (tag != LDAP_REQ_ABANDON && tag != LDAP_REQ_SEARCH) {
1406 LDAP_LOG( CONNECTION, ERR,
1407 "connection_input: conn %lu invalid req for UDP 0x%lx.\n",
1408 conn->c_connid, tag, 0 );
1410 Debug( LDAP_DEBUG_ANY, "invalid req for UDP 0x%lx\n", tag, 0,
1418 if(tag == LDAP_REQ_BIND) {
1419 /* immediately abandon all exiting operations upon BIND */
1420 connection_abandon( conn );
1423 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1426 op->vrFilter = NULL;
1427 op->o_pagedresults_state = conn->c_pagedresults_state;
1428 #ifdef LDAP_CONNECTIONLESS
1429 op->o_peeraddr = peeraddr;
1431 ber_str2bv( cdn, 0, 1, &op->o_dn );
1432 op->o_protocol = LDAP_VERSION2;
1436 if ( conn->c_conn_state == SLAP_C_BINDING
1437 || conn->c_conn_state == SLAP_C_CLOSING )
1440 LDAP_LOG( CONNECTION, INFO,
1441 "connection_input: conn %lu deferring operation\n",
1442 conn->c_connid, 0, 0 );
1444 Debug( LDAP_DEBUG_ANY, "deferring operation\n", 0, 0, 0 );
1446 conn->c_n_ops_pending++;
1447 LDAP_STAILQ_INSERT_TAIL( &conn->c_pending_ops, op, o_next );
1450 conn->c_n_ops_executing++;
1451 connection_op_activate( conn, op );
1455 if ( conn->c_struct_state != SLAP_C_USED ) {
1456 /* connection must have got closed underneath us */
1460 assert( conn->c_struct_state == SLAP_C_USED );
1466 connection_resched( Connection *conn )
1470 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1473 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1475 /* us trylock to avoid possible deadlock */
1476 rc = ldap_pvt_thread_mutex_trylock( &connections_mutex );
1480 LDAP_LOG( CONNECTION, DETAIL1,
1481 "connection_resched: conn %lu reaquiring locks.\n",
1482 conn->c_connid, 0, 0 );
1484 Debug( LDAP_DEBUG_TRACE,
1485 "connection_resched: reaquiring locks conn=%lu sd=%d\n",
1486 conn->c_connid, sd, 0 );
1489 * reaquire locks in the right order...
1490 * this may allow another thread to close this connection,
1491 * so recheck state below.
1493 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
1494 ldap_pvt_thread_mutex_lock( &connections_mutex );
1495 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
1498 if( conn->c_conn_state != SLAP_C_CLOSING ) {
1500 LDAP_LOG( CONNECTION, INFO,
1501 "connection_resched: conn %lu closed by other thread.\n",
1502 conn->c_connid, 0, 0 );
1504 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1505 "closed by other thread conn=%lu sd=%d\n",
1506 conn->c_connid, sd, 0 );
1510 LDAP_LOG( CONNECTION, DETAIL1,
1511 "connection_resched: conn %lu attempting closing.\n",
1512 conn->c_connid, 0, 0 );
1514 Debug( LDAP_DEBUG_TRACE, "connection_resched: "
1515 "attempting closing conn=%lu sd=%d\n",
1516 conn->c_connid, sd, 0 );
1518 connection_close( conn );
1521 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1525 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1526 /* other states need different handling */
1530 while ((op = LDAP_STAILQ_FIRST( &conn->c_pending_ops )) != NULL) {
1531 LDAP_STAILQ_REMOVE_HEAD( &conn->c_pending_ops, o_next );
1532 LDAP_STAILQ_NEXT(op, o_next) = NULL;
1533 /* pending operations should not be marked for abandonment */
1534 assert(!op->o_abandon);
1536 conn->c_n_ops_pending--;
1537 conn->c_n_ops_executing++;
1539 connection_op_activate( conn, op );
1541 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1548 static int connection_op_activate( Connection *conn, Operation *op )
1552 ber_tag_t tag = op->o_tag;
1554 if(tag == LDAP_REQ_BIND) {
1555 conn->c_conn_state = SLAP_C_BINDING;
1558 arg = (struct co_arg *) ch_malloc( sizeof(struct co_arg) );
1559 arg->co_conn = conn;
1562 if (!arg->co_op->o_dn.bv_len) {
1563 arg->co_op->o_authz = conn->c_authz;
1564 arg->co_op->o_dn.bv_val = ch_strdup( conn->c_dn.bv_val ?
1565 conn->c_dn.bv_val : "" );
1566 arg->co_op->o_ndn.bv_val = ch_strdup( conn->c_ndn.bv_val ?
1567 conn->c_ndn.bv_val : "" );
1569 arg->co_op->o_authtype = conn->c_authtype;
1570 ber_dupbv( &arg->co_op->o_authmech, &conn->c_authmech );
1572 if (!arg->co_op->o_protocol) {
1573 arg->co_op->o_protocol = conn->c_protocol
1574 ? conn->c_protocol : LDAP_VERSION3;
1576 arg->co_op->o_connid = conn->c_connid;
1578 LDAP_STAILQ_INSERT_TAIL( &conn->c_ops, arg->co_op, o_next );
1580 status = ldap_pvt_thread_pool_submit( &connection_pool,
1581 connection_operation, (void *) arg );
1583 if ( status != 0 ) {
1585 LDAP_LOG( CONNECTION, ERR,
1586 "connection_op_activate: conn %lu thread pool submit failed.\n",
1587 conn->c_connid, 0, 0 );
1589 Debug( LDAP_DEBUG_ANY,
1590 "ldap_pvt_thread_pool_submit failed (%d)\n", status, 0, 0 );
1592 /* should move op to pending list */
1598 int connection_write(ber_socket_t s)
1602 assert( connections != NULL );
1604 ldap_pvt_thread_mutex_lock( &connections_mutex );
1606 c = connection_get( s );
1608 slapd_clr_write( s, 0);
1612 LDAP_LOG( CONNECTION, ERR,
1613 "connection_write: sock %ld no connection!\n", (long)s, 0, 0);
1615 Debug( LDAP_DEBUG_ANY,
1616 "connection_write(%ld): no connection!\n",
1620 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1627 LDAP_LOG( CONNECTION, DETAIL1,
1628 "connection_write conn %lu waking output.\n", c->c_connid, 0, 0 );
1630 Debug( LDAP_DEBUG_TRACE,
1631 "connection_write(%d): waking output for id=%lu\n",
1632 s, c->c_connid, 0 );
1634 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1636 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) )
1637 slapd_set_read( s, 1 );
1638 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) )
1639 slapd_set_write( s, 1 );
1640 connection_return( c );
1641 ldap_pvt_thread_mutex_unlock( &connections_mutex );