11 #include <ac/unistd.h>
13 #include "ldapconfig.h"
19 int allow_severity = LOG_INFO;
20 int deny_severity = LOG_NOTICE;
21 #endif /* TCP Wrappers */
27 /* forward reference */
30 char *WSAGetLastErrorString();
32 #define WAKE_LISTENER \
35 ldap_pvt_thread_kill( listener_tid, LDAP_SIGUSR1 );\
40 #define WAKE_LISTENER \
43 ldap_pvt_thread_kill( listener_tid, LDAP_SIGUSR1 );\
48 static int daemon_initialized = 0;
49 static ldap_pvt_thread_t listener_tid;
50 static volatile sig_atomic_t slapd_shutdown = 0;
51 static volatile sig_atomic_t slapd_listener = 0;
55 ldap_pvt_thread_mutex_t sd_mutex;
60 /* In winsock, accept() returns values higher than dtblsize
61 so don't bother with this optimization */
71 * Add a descriptor to daemon control
73 static void slapd_add(int s) {
74 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
76 assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
77 assert( !FD_ISSET( s, &slap_daemon.sd_readers ));
78 assert( !FD_ISSET( s, &slap_daemon.sd_writers ));
81 if (s >= slap_daemon.sd_nfds) {
82 slap_daemon.sd_nfds = s + 1;
86 FD_SET( (unsigned) s, &slap_daemon.sd_actives );
87 FD_SET( (unsigned) s, &slap_daemon.sd_readers );
89 Debug( LDAP_DEBUG_CONNS, "daemon: added %d%s%s\n", s,
90 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
91 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
93 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
97 * Remove the descriptor from daemon control
99 void slapd_remove(int s) {
100 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
102 assert( FD_ISSET( s, &slap_daemon.sd_actives ));
104 Debug( LDAP_DEBUG_CONNS, "daemon: removing %d%s%s\n", s,
105 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
106 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
108 FD_CLR( (unsigned) s, &slap_daemon.sd_actives );
109 FD_CLR( (unsigned) s, &slap_daemon.sd_readers );
110 FD_CLR( (unsigned) s, &slap_daemon.sd_writers );
112 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
115 void slapd_clr_write(int s, int wake) {
116 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
119 assert( FD_ISSET( (unsigned) s, &slap_daemon.sd_actives) );
120 FD_CLR( (unsigned) s, &slap_daemon.sd_writers );
122 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
125 void slapd_set_write(int s, int wake) {
126 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
130 assert( FD_ISSET( s, &slap_daemon.sd_actives) );
131 FD_SET( (unsigned) s, &slap_daemon.sd_writers );
133 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
136 void slapd_clr_read(int s, int wake) {
137 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
140 assert( FD_ISSET( s, &slap_daemon.sd_actives) );
141 FD_CLR( (unsigned) s, &slap_daemon.sd_readers );
143 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
147 void slapd_set_read(int s, int wake) {
148 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
151 assert( FD_ISSET( s, &slap_daemon.sd_actives) );
152 FD_SET( (unsigned) s, &slap_daemon.sd_readers );
154 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
157 static void slapd_close(int s) {
160 Debug( LDAP_DEBUG_CONNS, "daemon: closing %d\n", s, 0, 0 );
165 set_socket( struct sockaddr_in *addr )
168 if ( !daemon_initialized ) sockinit();
171 dtblsize = sysconf( _SC_OPEN_MAX );
172 #elif HAVE_GETDTABLESIZE
173 dtblsize = getdtablesize();
175 dtblsize = FD_SETSIZE;
179 if(dtblsize > FD_SETSIZE) {
180 dtblsize = FD_SETSIZE;
182 #endif /* !FD_SETSIZE */
187 if ( (tcps = socket( AF_INET, SOCK_STREAM, 0 )) == -1 ) {
190 Debug( LDAP_DEBUG_ANY,
191 "daemon: socket() failed errno %d (%s)\n", err,
192 err > -1 && err < sys_nerr ? sys_errlist[err] :
195 Debug( LDAP_DEBUG_ANY,
196 "daemon: socket() failed errno %d (%s)\n",
198 WSAGetLastErrorString(), 0 );
204 if ( tcps >= dtblsize ) {
205 Debug( LDAP_DEBUG_ANY,
206 "daemon: listener descriptor %d is too great\n",
214 if ( setsockopt( tcps, SOL_SOCKET, SO_REUSEADDR,
215 (char *) &tmp, sizeof(tmp) ) == -1 )
218 Debug( LDAP_DEBUG_ANY,
219 "slapd(%d): setsockopt() failed errno %d (%s)\n",
221 err > -1 && err < sys_nerr
222 ? sys_errlist[err] : "unknown" );
227 if ( setsockopt( tcps, SOL_SOCKET, SO_KEEPALIVE,
228 (char *) &tmp, sizeof(tmp) ) == -1 )
231 Debug( LDAP_DEBUG_ANY,
232 "slapd(%d): setsockopt(KEEPALIVE) failed errno %d (%s)\n",
234 err > -1 && err < sys_nerr
235 ? sys_errlist[err] : "unknown" );
240 if ( bind( tcps, (struct sockaddr *) addr, sizeof(*addr) ) == -1 ) {
242 Debug( LDAP_DEBUG_ANY, "daemon: bind(%d) failed errno %d (%s)\n",
244 err > -1 && err < sys_nerr
245 ? sys_errlist[err] : "unknown" );
258 int inetd = ((int *)ptr) [0];
259 int tcps = ((int *)ptr) [1];
262 if ( !daemon_initialized ) sockinit();
266 ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
267 FD_ZERO( &slap_daemon.sd_readers );
268 FD_ZERO( &slap_daemon.sd_writers );
271 if ( listen( tcps, 5 ) == -1 ) {
273 Debug( LDAP_DEBUG_ANY,
274 "daemon: listen(%d, 5) failed errno %d (%s)\n",
276 err > -1 && err < sys_nerr
277 ? sys_errlist[err] : "unknown" );
284 if( connection_init( 0, NULL, NULL ) ) {
285 Debug( LDAP_DEBUG_ANY,
286 "connection_init(%d) failed.\n",
295 while ( !slapd_shutdown ) {
302 struct sockaddr_in from;
303 #if defined(SLAPD_RLOOKUPS) || defined(HAVE_TCPD)
312 FD_ZERO( &writefds );
318 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
320 #ifdef FD_SET_MANUAL_COPY
321 for( s = 0; s < nfds; s++ ) {
322 if(FD_ISSET( &slap_sd_writers, s )) {
323 FD_SET( &writefds, s );
325 if(FD_ISSET( &slap_sd_writers, s )) {
326 FD_SET( &writefds, s );
330 memcpy( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
331 memcpy( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
334 FD_SET( (unsigned) tcps, &readfds );
337 nfds = slap_daemon.sd_nfds;
342 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
344 ldap_pvt_thread_mutex_lock( &active_threads_mutex );
345 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
348 tvp = active_threads ? &zero : NULL;
351 Debug( LDAP_DEBUG_CONNS,
352 "daemon: select: tcps=%d active_threads=%d tvp=%s\n",
353 tcps, active_threads,
354 tvp == NULL ? "NULL" : "zero" );
357 ldap_pvt_thread_mutex_unlock( &active_threads_mutex );
359 switch(ns = select( nfds, &readfds, &writefds, 0, tvp )) {
360 case -1: { /* failure - try again */
363 Debug( LDAP_DEBUG_CONNS,
364 "daemon: select failed (%d): %s\n",
366 err >= 0 && err < sys_nerr
367 ? sys_errlist[err] : "unknown",
375 case 0: /* timeout - let threads run */
376 Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
378 ldap_pvt_thread_yield();
381 default: /* something happened - deal with it */
382 Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
387 if ( FD_ISSET( tcps, &readfds ) ) {
389 int len = sizeof(from);
392 if ( (s = accept( tcps,
393 (struct sockaddr *) &from, &len )) == -1 )
396 Debug( LDAP_DEBUG_ANY,
397 "daemon: accept(%d) failed errno %d (%s)\n", err,
398 tcps, err >= 0 && err < sys_nerr ?
399 sys_errlist[err] : "unknown");
403 assert( !FD_ISSET( 0, &slap_daemon.sd_actives) );
404 assert( !FD_ISSET( 0, &slap_daemon.sd_readers) );
405 assert( !FD_ISSET( 0, &slap_daemon.sd_writers) );
408 /* make sure descriptor number isn't too great */
409 if ( s >= dtblsize ) {
410 Debug( LDAP_DEBUG_ANY,
411 "daemon: %d beyond descriptor table size %d\n",
418 Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %d\n",
422 if ( getpeername( s, (struct sockaddr *) &from, &len ) == 0 ) {
423 client_addr = inet_ntoa( from.sin_addr );
425 #if defined(SLAPD_RLOOKUPS) || defined(HAVE_TCPD)
426 hp = gethostbyaddr( (char *)
427 &(from.sin_addr.s_addr),
428 sizeof(from.sin_addr.s_addr), AF_INET );
432 client_name = hp->h_name;
434 /* normalize the domain */
435 for ( p = client_name; *p; p++ ) {
436 *p = TOLOWER( (unsigned char) *p );
452 if(!hosts_ctl("slapd",
453 client_name != NULL ? client_name : STRING_UNKNOWN,
454 client_addr != NULL ? client_addr : STRING_UNKNOWN,
458 Statslog( LDAP_DEBUG_ANY,
459 "fd=%d connection from %s (%s) denied.\n",
461 client_name == NULL ? "unknown" : client_name,
462 client_addr == NULL ? "unknown" : client_addr,
468 #endif /* HAVE_TCPD */
471 if( (id = connection_init(s, client_name, client_addr)) < 0 ) {
472 Debug( LDAP_DEBUG_ANY,
473 "daemon: connection_init(%d, %s, %s) failed.\n",
475 client_name == NULL ? "unknown" : client_name,
476 client_addr == NULL ? "unknown" : client_addr);
481 Statslog( LDAP_DEBUG_STATS,
482 "daemon: conn=%d fd=%d connection from %s (%s) accepted.\n",
484 client_name == NULL ? "unknown" : client_name,
485 client_addr == NULL ? "unknown" : client_addr,
493 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
495 for ( i = 0; i < readfds.fd_count; i++ )
497 Debug( LDAP_DEBUG_CONNS, " %d%s", readfds.fd_array[i], "r" );
499 for ( i = 0; i < writefds.fd_count; i++ )
501 Debug( LDAP_DEBUG_CONNS, " %d%s", writefds.fd_array[i], "w" );
504 for ( i = 0; i < nfds; i++ ) {
507 r = FD_ISSET( i, &readfds );
508 w = FD_ISSET( i, &writefds );
509 if ( i != tcps && (r || w) ) {
510 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
511 r ? "r" : "", w ? "w" : "" );
515 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
518 /* loop through the writers */
520 for ( i = 0; i < writefds.fd_count; i++ ) {
521 int wd = writefds.fd_array[i];
527 Debug( LDAP_DEBUG_CONNS,
528 "daemon: signalling write waiter on %d\n",
531 assert( FD_ISSET( wd, &slap_daemon.sd_actives) );
533 slapd_clr_write( wd, 0 );
534 if ( connection_write( wd ) < 0 ) {
535 FD_CLR( (unsigned) wd, &readfds );
540 for ( i = 0; i < nfds; i++ ) {
544 if ( FD_ISSET( i, &writefds ) ) {
545 Debug( LDAP_DEBUG_CONNS,
546 "daemon: signaling write waiter on %d\n", i, 0, 0 );
548 assert( FD_ISSET( i, &slap_daemon.sd_actives) );
550 /* clear the write flag */
551 slapd_clr_write( i, 0 );
553 if( connection_write( i ) < 0 ) {
554 FD_CLR( i, &readfds );
562 for ( i = 0; i < readfds.fd_count; i++ ) {
563 int rd = readfds.fd_array[i];
567 Debug ( LDAP_DEBUG_CONNS,
568 "daemon: read activity on %d\n", rd, 0, 0 );
569 assert( FD_ISSET( rd, &slap_daemon.sd_actives) );
571 if ( connection_read( rd ) < 0 ) {
576 for ( i = 0; i < nfds; i++ ) {
581 if ( FD_ISSET( i, &readfds ) ) {
582 Debug( LDAP_DEBUG_CONNS,
583 "daemon: read activity on %d\n", i, 0, 0 );
585 assert( FD_ISSET( i, &slap_daemon.sd_actives) );
587 if( connection_read( i ) < 0) {
593 ldap_pvt_thread_yield();
596 if( slapd_shutdown > 0 ) {
597 Debug( LDAP_DEBUG_TRACE,
598 "daemon: shutdown requested (%d) and initiated.\n",
599 (int) slapd_shutdown, 0, 0 );
601 } else if ( slapd_shutdown < 0 ) {
602 Debug( LDAP_DEBUG_TRACE,
603 "daemon: abnormal condition (%d), shutdown initiated.\n",
604 (int) slapd_shutdown, 0, 0 );
606 Debug( LDAP_DEBUG_TRACE,
607 "daemon: no active streams, shutdown initiated.\n",
615 /* we only implement "quick" shutdown */
616 connections_shutdown();
618 ldap_pvt_thread_mutex_lock( &active_threads_mutex );
619 Debug( LDAP_DEBUG_ANY,
620 "slapd shutdown: waiting for %d threads to terminate\n",
621 active_threads, 0, 0 );
622 while ( active_threads > 0 ) {
623 ldap_pvt_thread_cond_wait(&active_threads_cond, &active_threads_mutex);
625 ldap_pvt_thread_mutex_unlock( &active_threads_mutex );
631 int slapd_daemon( int inetd, int tcps )
634 int *args = ch_malloc( sizeof( int[2] ) );
638 if ( !daemon_initialized ) sockinit();
642 #define SLAPD_LISTENER_THREAD 1
643 #if defined( SLAPD_LISTENER_THREAD ) || !defined(HAVE_PTHREADS)
645 /* listener as a separate THREAD */
646 rc = ldap_pvt_thread_create( &listener_tid,
647 0, slapd_daemon_task, args );
650 Debug( LDAP_DEBUG_ANY,
651 "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
655 /* wait for the listener thread to complete */
656 ldap_pvt_thread_join( listener_tid, (void *) NULL );
658 /* expermimental code */
659 listener_tid = pthread_self();
660 slapd_daemon_task( args );
666 connections_destroy();
678 WORD wVersionRequested;
682 wVersionRequested = MAKEWORD( 2, 0 );
684 err = WSAStartup( wVersionRequested, &wsaData );
686 /* Tell the user that we couldn't find a usable */
691 /* Confirm that the WinSock DLL supports 2.0.*/
692 /* Note that if the DLL supports versions greater */
693 /* than 2.0 in addition to 2.0, it will still return */
694 /* 2.0 in wVersion since that is the version we */
697 if ( LOBYTE( wsaData.wVersion ) != 2 ||
698 HIBYTE( wsaData.wVersion ) != 0 )
700 /* Tell the user that we couldn't find a usable */
705 daemon_initialized = 1;
706 } /* The WinSock DLL is acceptable. Proceed. */
708 void hit_socket( void )
711 extern struct sockaddr_in bind_addr;
713 /* throw something at the socket to terminate the select() in the daemon thread. */
714 if (( s = socket( AF_INET, SOCK_STREAM, 0 )) == INVALID_SOCKET )
715 Debug( LDAP_DEBUG_TRACE,
716 "slap_set_shutdown: socket failed\n\tWSAGetLastError=%d (%s)\n",
717 WSAGetLastError(), WSAGetLastErrorString(), 0 );
719 if ( ioctlsocket( s, FIONBIO, &on ) == -1 )
720 Debug( LDAP_DEBUG_TRACE,
721 "slap_set_shutdown:FIONBIO ioctl on %d faled\n\tWSAGetLastError=%d (%s)\n",
722 s, WSAGetLastError(), WSAGetLastError() );
724 bind_addr.sin_addr.s_addr = htonl( INADDR_LOOPBACK );
726 if ( connect( s, (struct sockaddr *)&bind_addr, sizeof( struct sockaddr_in )) == SOCKET_ERROR ) {
727 /* we can probably expect some error to occur here, mostly WSAEWOULDBLOCK */
736 if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
739 daemon_initialized = 1;
744 daemon_initialized = 1;
750 slap_set_shutdown( int sig )
752 slapd_shutdown = sig;
755 ldap_pvt_thread_kill( listener_tid, LDAP_SIGUSR1 );
761 (void) SIGNAL( sig, slap_set_shutdown );
765 slap_do_nothing( int sig )
768 (void) SIGNAL( sig, slap_do_nothing );