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>
20 /* protected by connections_mutex */
21 static ldap_pvt_thread_mutex_t connections_mutex;
22 static Connection *connections = NULL;
23 static unsigned long conn_nextid = 0;
25 /* structure state (protected by connections_mutex) */
26 #define SLAP_C_UNINITIALIZED 0x00 /* MUST BE ZERO (0) */
27 #define SLAP_C_UNUSED 0x01
28 #define SLAP_C_USED 0x02
30 /* connection state (protected by c_mutex ) */
31 #define SLAP_C_INVALID 0x00 /* MUST BE ZERO (0) */
32 #define SLAP_C_INACTIVE 0x01 /* zero threads */
33 #define SLAP_C_ACTIVE 0x02 /* one or more threads */
34 #define SLAP_C_BINDING 0x03 /* binding */
35 #define SLAP_C_CLOSING 0x04 /* closing */
38 connection_state2str( int state )
41 case SLAP_C_INVALID: return "!";
42 case SLAP_C_INACTIVE: return "|";
43 case SLAP_C_ACTIVE: return "";
44 case SLAP_C_BINDING: return "B";
45 case SLAP_C_CLOSING: return "C";
51 static Connection* connection_get( ber_socket_t s );
53 static int connection_input( Connection *c );
54 static void connection_close( Connection *c );
56 static int connection_op_activate( Connection *conn, Operation *op );
57 static int connection_resched( Connection *conn );
58 static void connection_abandon( Connection *conn );
59 static void connection_destroy( Connection *c );
67 * Initialize connection management infrastructure.
69 int connections_init(void)
71 assert( connections == NULL );
73 if( connections != NULL) {
74 Debug( LDAP_DEBUG_ANY, "connections_init: already initialized.\n",
79 /* should check return of every call */
80 ldap_pvt_thread_mutex_init( &connections_mutex );
82 connections = (Connection *) calloc( dtblsize, sizeof(Connection) );
84 if( connections == NULL ) {
85 Debug( LDAP_DEBUG_ANY,
86 "connections_init: allocation (%d*%ld) of connection array failed\n",
87 dtblsize, (long) sizeof(Connection), 0 );
91 assert( connections[0].c_struct_state == SLAP_C_UNINITIALIZED );
92 assert( connections[dtblsize-1].c_struct_state == SLAP_C_UNINITIALIZED );
95 * per entry initialization of the Connection array initialization
96 * will be done by connection_init()
103 * Destroy connection management infrastructure.
105 int connections_destroy(void)
109 /* should check return of every call */
111 if( connections == NULL) {
112 Debug( LDAP_DEBUG_ANY, "connections_destroy: nothing to destroy.\n",
117 for ( i = 0; i < dtblsize; i++ ) {
118 if( connections[i].c_struct_state != SLAP_C_UNINITIALIZED ) {
119 ber_sockbuf_free( connections[i].c_sb );
120 ldap_pvt_thread_mutex_destroy( &connections[i].c_mutex );
121 ldap_pvt_thread_mutex_destroy( &connections[i].c_write_mutex );
122 ldap_pvt_thread_cond_destroy( &connections[i].c_write_cv );
129 ldap_pvt_thread_mutex_destroy( &connections_mutex );
134 * shutdown all connections
136 int connections_shutdown(void)
140 ldap_pvt_thread_mutex_lock( &connections_mutex );
142 for ( i = 0; i < dtblsize; i++ ) {
143 if( connections[i].c_struct_state != SLAP_C_USED ) {
147 ldap_pvt_thread_mutex_lock( &connections[i].c_mutex );
149 /* connections_mutex and c_mutex are locked */
150 connection_closing( &connections[i] );
151 connection_close( &connections[i] );
153 ldap_pvt_thread_mutex_unlock( &connections[i].c_mutex );
156 ldap_pvt_thread_mutex_unlock( &connections_mutex );
162 * Timeout idle connections.
164 int connections_timeout_idle(time_t now)
170 ldap_pvt_thread_mutex_lock( &connections_mutex );
172 for( c = connection_first( &connindex );
174 c = connection_next( c, &connindex ) )
176 if( difftime( c->c_activitytime+global_idletimeout, now) < 0 ) {
178 connection_closing( c );
179 connection_close( c );
183 connection_done( c );
185 ldap_pvt_thread_mutex_unlock( &connections_mutex );
190 static Connection* connection_get( ber_socket_t s )
192 /* connections_mutex should be locked by caller */
196 Debug( LDAP_DEBUG_ARGS,
197 "connection_get(%ld)\n",
200 assert( connections != NULL );
202 if(s == AC_SOCKET_INVALID) {
209 assert( c->c_struct_state != SLAP_C_UNINITIALIZED );
216 for(i=0; i<dtblsize; i++) {
217 ber_sockbuf_ctrl( connections[i].c_sb,
218 LBER_SB_OPT_GET_FD, &sd );
220 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
221 assert( connections[i].c_conn_state == SLAP_C_INVALID );
222 assert( connections[i].c_sb == 0 );
226 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
227 assert( connections[i].c_conn_state == SLAP_C_INVALID );
228 assert( sd == AC_SOCKET_INVALID );
232 /* state can actually change from used -> unused by resched,
233 * so don't assert details here.
247 ldap_pvt_thread_mutex_lock( &c->c_mutex );
249 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
250 if( c->c_struct_state != SLAP_C_USED ) {
251 /* connection must have been closed due to resched */
253 assert( c->c_conn_state == SLAP_C_INVALID );
254 assert( sd == AC_SOCKET_INVALID );
256 Debug( LDAP_DEBUG_TRACE,
257 "connection_get(%d): connection not used\n",
260 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
264 Debug( LDAP_DEBUG_TRACE,
265 "connection_get(%d): got connid=%ld\n",
270 assert( c->c_struct_state == SLAP_C_USED );
271 assert( c->c_conn_state != SLAP_C_INVALID );
272 assert( sd != AC_SOCKET_INVALID );
274 c->c_activitytime = slap_get_time();
280 static void connection_return( Connection *c )
282 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
285 long connection_init(
289 const char* peername,
290 const char* sockname,
296 assert( connections != NULL );
298 assert( dnsname != NULL );
299 assert( peername != NULL );
300 assert( sockname != NULL );
306 if( s == AC_SOCKET_INVALID ) {
307 Debug( LDAP_DEBUG_ANY,
308 "connection_init(%ld): invalid.\n",
315 assert( s < dtblsize );
318 ldap_pvt_thread_mutex_lock( &connections_mutex );
329 for( i=0; i < dtblsize; i++) {
332 if( connections[i].c_struct_state == SLAP_C_UNINITIALIZED ) {
333 assert( connections[i].c_sb == 0 );
338 sd = AC_SOCKET_INVALID;
339 if (connections[i].c_sb != NULL)
340 ber_sockbuf_ctrl( connections[i].c_sb, LBER_SB_OPT_GET_FD, &sd );
342 if( connections[i].c_struct_state == SLAP_C_UNUSED ) {
343 assert( sd == AC_SOCKET_INVALID );
348 assert( connections[i].c_struct_state == SLAP_C_USED );
349 assert( connections[i].c_conn_state != SLAP_C_INVALID );
350 assert( sd != AC_SOCKET_INVALID );
354 Debug( LDAP_DEBUG_ANY,
355 "connection_init(%d): connection table full (%d/%d)\n",
357 ldap_pvt_thread_mutex_unlock( &connections_mutex );
365 if( c->c_struct_state == SLAP_C_UNINITIALIZED ) {
366 c->c_authmech = NULL;
370 c->c_listener_url = NULL;
371 c->c_peer_domain = NULL;
372 c->c_peer_name = NULL;
373 c->c_sock_name = NULL;
376 c->c_pending_ops = NULL;
378 c->c_sasl_bind_mech = NULL;
379 #ifdef HAVE_CYRUS_SASL
380 c->c_sasl_bind_context = NULL;
383 c->c_sb = ber_sockbuf_alloc( );
384 c->c_currentber = NULL;
386 /* should check status of thread calls */
387 ldap_pvt_thread_mutex_init( &c->c_mutex );
388 ldap_pvt_thread_mutex_init( &c->c_write_mutex );
389 ldap_pvt_thread_cond_init( &c->c_write_cv );
391 c->c_struct_state = SLAP_C_UNUSED;
394 ldap_pvt_thread_mutex_lock( &c->c_mutex );
396 assert( c->c_struct_state == SLAP_C_UNUSED );
397 assert( c->c_authmech == NULL );
398 assert( c->c_dn == NULL );
399 assert( c->c_cdn == NULL );
400 assert( c->c_listener_url == NULL );
401 assert( c->c_peer_domain == NULL );
402 assert( c->c_peer_name == NULL );
403 assert( c->c_sock_name == NULL );
404 assert( c->c_ops == NULL );
405 assert( c->c_pending_ops == NULL );
406 assert( c->c_sasl_bind_mech == NULL );
407 #ifdef HAVE_CYRUS_SASL
408 assert( c->c_sasl_bind_context == NULL );
410 assert( c->c_currentber == NULL );
412 c->c_listener_url = ch_strdup( url );
413 c->c_peer_domain = ch_strdup( dnsname );
414 c->c_peer_name = ch_strdup( peername );
415 c->c_sock_name = ch_strdup( sockname );
417 c->c_n_ops_received = 0;
418 c->c_n_ops_executing = 0;
419 c->c_n_ops_pending = 0;
420 c->c_n_ops_completed = 0;
426 /* assume LDAPv3 until bind */
427 c->c_protocol = LDAP_VERSION3;
429 c->c_activitytime = c->c_starttime = slap_get_time();
431 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_tcp, LBER_SBIOD_LEVEL_PROVIDER,
433 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_readahead,
434 LBER_SBIOD_LEVEL_PROVIDER, NULL );
436 ber_sockbuf_add_io( c->c_sb, &ber_sockbuf_io_debug, INT_MAX, NULL );
438 if( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_SET_NONBLOCK, c /* non-NULL */ ) < 0 ) {
439 Debug( LDAP_DEBUG_ANY,
440 "connection_init(%d, %s): set nonblocking failed\n",
441 s, c->c_peer_name, 0 );
444 id = c->c_connid = conn_nextid++;
446 c->c_conn_state = SLAP_C_INACTIVE;
447 c->c_struct_state = SLAP_C_USED;
452 c->c_needs_tls_accept = 1;
455 c->c_needs_tls_accept = 0;
459 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
460 ldap_pvt_thread_mutex_unlock( &connections_mutex );
462 backend_connection_init(c);
468 connection_destroy( Connection *c )
470 /* note: connections_mutex should be locked by caller */
473 assert( connections != NULL );
475 assert( c->c_struct_state != SLAP_C_UNUSED );
476 assert( c->c_conn_state != SLAP_C_INVALID );
477 assert( c->c_ops == NULL );
479 backend_connection_destroy(c);
484 c->c_activitytime = c->c_starttime = 0;
486 if(c->c_authmech != NULL ) {
488 c->c_authmech = NULL;
490 if(c->c_dn != NULL) {
494 if(c->c_cdn != NULL) {
498 if(c->c_listener_url != NULL) {
499 free(c->c_listener_url);
500 c->c_listener_url = NULL;
502 if(c->c_peer_domain != NULL) {
503 free(c->c_peer_domain);
504 c->c_peer_domain = NULL;
506 if(c->c_peer_name != NULL) {
509 * If peer was a domain socket, unlink. Mind you,
510 * they may be un-named. Should we leave this to
513 if (strncmp(c->c_peer_name, "PATH=", 5) == 0) {
514 char *path = c->c_peer_name + 5;
519 #endif /* LDAP_PF_LOCAL */
521 free(c->c_peer_name);
522 c->c_peer_name = NULL;
524 if(c->c_sock_name != NULL) {
525 free(c->c_sock_name);
526 c->c_sock_name = NULL;
529 c->c_sasl_bind_in_progress = 0;
530 if(c->c_sasl_bind_mech != NULL) {
531 free(c->c_sasl_bind_mech);
532 c->c_sasl_bind_mech = NULL;
534 #ifdef HAVE_CYRUS_SASL
535 if(c->c_sasl_bind_context != NULL ) {
536 sasl_dispose( &c->c_sasl_bind_context );
537 c->c_sasl_bind_context = NULL;
541 if ( c->c_currentber != NULL ) {
542 ber_free( c->c_currentber, 1 );
543 c->c_currentber = NULL;
546 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
547 if ( sd != AC_SOCKET_INVALID ) {
548 slapd_remove( sd, 0 );
550 Statslog( LDAP_DEBUG_STATS,
551 "conn=%ld fd=%d closed\n",
552 c->c_connid, sd, 0, 0, 0 );
555 ber_sockbuf_free( c->c_sb );
556 c->c_sb = ber_sockbuf_alloc( );
558 c->c_conn_state = SLAP_C_INVALID;
559 c->c_struct_state = SLAP_C_UNUSED;
562 int connection_state_closing( Connection *c )
564 /* c_mutex must be locked by caller */
568 assert( c->c_struct_state == SLAP_C_USED );
570 state = c->c_conn_state;
572 assert( state != SLAP_C_INVALID );
574 return state == SLAP_C_CLOSING;
577 static void connection_abandon( Connection *c )
579 /* c_mutex must be locked by caller */
583 for( o = c->c_ops; o != NULL; o = o->o_next ) {
584 ldap_pvt_thread_mutex_lock( &o->o_abandonmutex );
586 ldap_pvt_thread_mutex_unlock( &o->o_abandonmutex );
589 /* remove pending operations */
590 for( o = slap_op_pop( &c->c_pending_ops );
592 o = slap_op_pop( &c->c_pending_ops ) )
598 void connection_closing( Connection *c )
600 assert( connections != NULL );
602 assert( c->c_struct_state == SLAP_C_USED );
603 assert( c->c_conn_state != SLAP_C_INVALID );
605 /* c_mutex must be locked by caller */
607 if( c->c_conn_state != SLAP_C_CLOSING ) {
610 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
611 Debug( LDAP_DEBUG_TRACE,
612 "connection_closing: readying conn=%ld sd=%d for close\n",
613 c->c_connid, sd, 0 );
615 /* update state to closing */
616 c->c_conn_state = SLAP_C_CLOSING;
618 /* don't listen on this port anymore */
619 slapd_clr_read( sd, 1 );
621 /* abandon active operations */
622 connection_abandon( c );
624 /* wake write blocked operations */
625 slapd_clr_write( sd, 1 );
626 ldap_pvt_thread_cond_signal( &c->c_write_cv );
630 static void connection_close( Connection *c )
634 assert( connections != NULL );
636 assert( c->c_struct_state == SLAP_C_USED );
637 assert( c->c_conn_state == SLAP_C_CLOSING );
639 /* note: connections_mutex and c_mutex should be locked by caller */
641 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_GET_FD, &sd );
642 if( c->c_ops != NULL ) {
643 Debug( LDAP_DEBUG_TRACE,
644 "connection_close: deferring conn=%ld sd=%d\n",
645 c->c_connid, sd, 0 );
650 Debug( LDAP_DEBUG_TRACE, "connection_close: conn=%ld sd=%d\n",
651 c->c_connid, sd, 0 );
653 connection_destroy( c );
656 unsigned long connections_nextid(void)
659 assert( connections != NULL );
661 ldap_pvt_thread_mutex_lock( &connections_mutex );
665 ldap_pvt_thread_mutex_unlock( &connections_mutex );
670 Connection* connection_first( ber_socket_t *index )
672 assert( connections != NULL );
673 assert( index != NULL );
675 ldap_pvt_thread_mutex_lock( &connections_mutex );
679 return connection_next(NULL, index);
682 Connection* connection_next( Connection *c, ber_socket_t *index )
684 assert( connections != NULL );
685 assert( index != NULL );
686 assert( *index <= dtblsize );
689 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
694 for(; *index < dtblsize; (*index)++) {
695 if( connections[*index].c_struct_state == SLAP_C_UNINITIALIZED ) {
696 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
704 if( connections[*index].c_struct_state == SLAP_C_USED ) {
705 assert( connections[*index].c_conn_state != SLAP_C_INVALID );
706 c = &connections[(*index)++];
710 assert( connections[*index].c_struct_state == SLAP_C_UNUSED );
711 assert( connections[*index].c_conn_state == SLAP_C_INVALID );
715 ldap_pvt_thread_mutex_lock( &c->c_mutex );
721 void connection_done( Connection *c )
723 assert( connections != NULL );
726 ldap_pvt_thread_mutex_unlock( &c->c_mutex );
729 ldap_pvt_thread_mutex_unlock( &connections_mutex );
733 * connection_activity - handle the request operation op on connection
734 * conn. This routine figures out what kind of operation it is and
735 * calls the appropriate stub to handle it.
739 connection_operation( void *arg_v )
742 struct co_arg *arg = arg_v;
743 ber_tag_t tag = arg->co_op->o_tag;
744 Connection *conn = arg->co_conn;
746 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
748 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
750 if( conn->c_sasl_bind_in_progress && tag != LDAP_REQ_BIND ) {
751 Debug( LDAP_DEBUG_ANY, "connection_operation: "
752 "error: SASL bind in progress (tag=%ld).\n",
754 send_ldap_result( conn, arg->co_op,
755 rc = LDAP_OPERATIONS_ERROR,
756 NULL, "SASL bind in progress", NULL, NULL );
757 goto operations_error;
762 rc = do_bind( conn, arg->co_op );
765 case LDAP_REQ_UNBIND:
766 rc = do_unbind( conn, arg->co_op );
770 rc = do_add( conn, arg->co_op );
773 case LDAP_REQ_DELETE:
774 rc = do_delete( conn, arg->co_op );
777 case LDAP_REQ_MODRDN:
778 rc = do_modrdn( conn, arg->co_op );
781 case LDAP_REQ_MODIFY:
782 rc = do_modify( conn, arg->co_op );
785 case LDAP_REQ_COMPARE:
786 rc = do_compare( conn, arg->co_op );
789 case LDAP_REQ_SEARCH:
790 rc = do_search( conn, arg->co_op );
793 case LDAP_REQ_ABANDON:
794 rc = do_abandon( conn, arg->co_op );
797 case LDAP_REQ_EXTENDED:
798 rc = do_extended( conn, arg->co_op );
802 Debug( LDAP_DEBUG_ANY, "unknown LDAP request 0x%lx\n",
804 arg->co_op->o_tag = LBER_ERROR;
805 send_ldap_disconnect( conn, arg->co_op,
806 LDAP_PROTOCOL_ERROR, "unknown LDAP request" );
811 if( rc == SLAPD_DISCONNECT ) tag = LBER_ERROR;
814 ldap_pvt_thread_mutex_lock( &num_ops_mutex );
816 ldap_pvt_thread_mutex_unlock( &num_ops_mutex );
818 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
820 conn->c_n_ops_executing--;
821 conn->c_n_ops_completed++;
823 slap_op_remove( &conn->c_ops, arg->co_op );
824 slap_op_free( arg->co_op );
827 free( (char *) arg );
832 case LDAP_REQ_UNBIND:
833 /* c_mutex is locked */
834 connection_closing( conn );
838 conn->c_sasl_bind_in_progress =
839 rc == LDAP_SASL_BIND_IN_PROGRESS ? 1 : 0;
841 if( conn->c_conn_state == SLAP_C_BINDING) {
842 conn->c_conn_state = SLAP_C_ACTIVE;
846 connection_resched( conn );
848 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
853 int connection_read(ber_socket_t s)
857 assert( connections != NULL );
859 ldap_pvt_thread_mutex_lock( &connections_mutex );
861 /* get (locked) connection */
862 c = connection_get( s );
865 Debug( LDAP_DEBUG_ANY,
866 "connection_read(%ld): no connection!\n",
871 ldap_pvt_thread_mutex_unlock( &connections_mutex );
877 if( c->c_conn_state == SLAP_C_CLOSING ) {
878 Debug( LDAP_DEBUG_TRACE,
879 "connection_read(%d): closing, ignoring input for id=%ld\n",
882 connection_return( c );
883 ldap_pvt_thread_mutex_unlock( &connections_mutex );
887 Debug( LDAP_DEBUG_TRACE,
888 "connection_read(%d): checking for input on id=%ld\n",
892 if ( c->c_is_tls && c->c_needs_tls_accept ) {
893 rc = ldap_pvt_tls_accept( c->c_sb, NULL );
898 Debug( LDAP_DEBUG_TRACE,
899 "connection_read(%d): TLS accept error error=%d id=%ld, closing\n",
900 s, rc, c->c_connid );
902 c->c_needs_tls_accept = 0;
903 /* connections_mutex and c_mutex are locked */
904 connection_closing( c );
906 /* Drain input before close, to allow SSL error codes
907 * to propagate to client. */
914 rc = select(s+1, &rfd, NULL, NULL, &tv);
916 ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_DRAIN,
919 connection_close( c );
920 } else if ( rc == 0 ) {
921 c->c_needs_tls_accept = 0;
923 connection_return( c );
924 ldap_pvt_thread_mutex_unlock( &connections_mutex );
929 #define CONNECTION_INPUT_LOOP 1
931 #ifdef DATA_READY_LOOP
932 while( !rc && ber_sockbuf_ctrl( c->c_sb, LBER_SB_DATA_READY, NULL ) )
933 #elif CONNECTION_INPUT_LOOP
937 /* How do we do this without getting into a busy loop ? */
938 rc = connection_input( c );
942 Debug( LDAP_DEBUG_TRACE,
943 "connection_read(%d): input error=%d id=%ld, closing.\n",
944 s, rc, c->c_connid );
946 /* connections_mutex and c_mutex are locked */
947 connection_closing( c );
948 connection_close( c );
951 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) )
952 slapd_set_read( s, 1 );
953 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) )
954 slapd_set_write( s, 1 );
955 connection_return( c );
956 ldap_pvt_thread_mutex_unlock( &connections_mutex );
971 if ( conn->c_currentber == NULL && (conn->c_currentber = ber_alloc())
973 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
979 tag = ber_get_next( conn->c_sb, &len, conn->c_currentber );
980 if ( tag != LDAP_TAG_MESSAGE ) {
984 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
986 Debug( LDAP_DEBUG_TRACE,
987 "ber_get_next on fd %d failed errno=%d (%s)\n",
988 sd, err, sock_errstr(err) );
990 if ( err != EWOULDBLOCK && err != EAGAIN ) {
991 /* log, close and send error */
992 ber_free( conn->c_currentber, 1 );
993 conn->c_currentber = NULL;
1000 ber = conn->c_currentber;
1001 conn->c_currentber = NULL;
1003 if ( (tag = ber_get_int( ber, &msgid )) != LDAP_TAG_MSGID ) {
1004 /* log, close and send error */
1005 Debug( LDAP_DEBUG_ANY, "ber_get_int returns 0x%lx\n", tag, 0,
1011 if ( (tag = ber_peek_tag( ber, &len )) == LBER_ERROR ) {
1012 /* log, close and send error */
1013 Debug( LDAP_DEBUG_ANY, "ber_peek_tag returns 0x%lx\n", tag, 0,
1020 if(tag == LDAP_REQ_BIND) {
1021 /* immediately abandon all exiting operations upon BIND */
1022 connection_abandon( conn );
1025 op = slap_op_alloc( ber, msgid, tag, conn->c_n_ops_received++ );
1027 if ( conn->c_conn_state == SLAP_C_BINDING
1028 || conn->c_conn_state == SLAP_C_CLOSING )
1030 Debug( LDAP_DEBUG_ANY, "deferring operation\n", 0, 0, 0 );
1031 conn->c_n_ops_pending++;
1032 slap_op_add( &conn->c_pending_ops, op );
1035 conn->c_n_ops_executing++;
1036 connection_op_activate( conn, op );
1040 if ( conn->c_struct_state != SLAP_C_USED ) {
1041 /* connection must have got closed underneath us */
1045 assert( conn->c_struct_state == SLAP_C_USED );
1051 connection_resched( Connection *conn )
1055 if( conn->c_conn_state == SLAP_C_CLOSING ) {
1058 ber_sockbuf_ctrl( conn->c_sb, LBER_SB_OPT_GET_FD, &sd );
1059 Debug( LDAP_DEBUG_TRACE,
1060 "connection_resched: attempting closing conn=%ld sd=%d\n",
1061 conn->c_connid, sd, 0 );
1063 ldap_pvt_thread_mutex_lock( &connections_mutex );
1064 connection_close( conn );
1065 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1069 if( conn->c_conn_state != SLAP_C_ACTIVE ) {
1070 /* other states need different handling */
1074 for( op = slap_op_pop( &conn->c_pending_ops );
1076 op = slap_op_pop( &conn->c_pending_ops ) )
1078 /* pending operations should not be marked for abandonment */
1079 assert(!op->o_abandon);
1081 conn->c_n_ops_pending--;
1082 conn->c_n_ops_executing++;
1084 connection_op_activate( conn, op );
1086 if ( conn->c_conn_state == SLAP_C_BINDING ) {
1093 static int connection_op_activate( Connection *conn, Operation *op )
1098 ber_tag_t tag = op->o_tag;
1100 if(tag == LDAP_REQ_BIND) {
1101 conn->c_conn_state = SLAP_C_BINDING;
1104 if ( conn->c_dn != NULL ) {
1105 tmpdn = ch_strdup( conn->c_dn );
1110 arg = (struct co_arg *) ch_malloc( sizeof(struct co_arg) );
1111 arg->co_conn = conn;
1114 arg->co_op->o_dn = ch_strdup( tmpdn != NULL ? tmpdn : "" );
1115 arg->co_op->o_ndn = ch_strdup( arg->co_op->o_dn );
1116 (void) dn_normalize( arg->co_op->o_ndn );
1118 arg->co_op->o_protocol = conn->c_protocol;
1119 arg->co_op->o_connid = conn->c_connid;
1121 arg->co_op->o_authtype = conn->c_authtype;
1122 arg->co_op->o_authmech = conn->c_authmech != NULL
1123 ? ch_strdup( conn->c_authmech ) : NULL;
1125 slap_op_add( &conn->c_ops, arg->co_op );
1127 if( tmpdn != NULL ) {
1131 status = ldap_pvt_thread_pool_submit( &connection_pool,
1132 connection_operation, (void *) arg );
1134 if ( status != 0 ) {
1135 Debug( LDAP_DEBUG_ANY,
1136 "ldap_pvt_thread_create failed (%d)\n", status, 0, 0 );
1138 /* should move op to pending list */
1144 int connection_write(ber_socket_t s)
1147 assert( connections != NULL );
1149 ldap_pvt_thread_mutex_lock( &connections_mutex );
1151 c = connection_get( s );
1153 slapd_clr_write( s, 0);
1156 Debug( LDAP_DEBUG_ANY,
1157 "connection_write(%ld): no connection!\n",
1160 ldap_pvt_thread_mutex_unlock( &connections_mutex );
1166 Debug( LDAP_DEBUG_TRACE,
1167 "connection_write(%d): waking output for id=%ld\n",
1168 s, c->c_connid, 0 );
1170 ldap_pvt_thread_cond_signal( &c->c_write_cv );
1172 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_READ, NULL ) )
1173 slapd_set_read( s, 1 );
1174 if ( ber_sockbuf_ctrl( c->c_sb, LBER_SB_OPT_NEEDS_WRITE, NULL ) )
1175 slapd_set_write( s, 1 );
1176 connection_return( c );
1177 ldap_pvt_thread_mutex_unlock( &connections_mutex );