2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2006 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
11 * A copy of this license is available in the file LICENSE in the
12 * top-level directory of the distribution or, alternatively, at
13 * <http://www.OpenLDAP.org/license.html>.
15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
16 * All rights reserved.
18 * Redistribution and use in source and binary forms are permitted
19 * provided that this notice is preserved and that due credit is given
20 * to the University of Michigan at Ann Arbor. The name of the University
21 * may not be used to endorse or promote products derived from this
22 * software without specific prior written permission. This software
23 * is provided ``as is'' without express or implied warranty.
32 #include <ac/socket.h>
33 #include <ac/string.h>
35 #include <ac/unistd.h>
38 #include "ldap_pvt_thread.h"
43 #if defined(HAVE_SYS_EPOLL_H) && defined(HAVE_EPOLL)
44 # include <sys/epoll.h>
49 int allow_severity = LOG_INFO;
50 int deny_severity = LOG_NOTICE;
52 # define SLAP_STRING_UNKNOWN STRING_UNKNOWN
53 #else /* ! TCP Wrappers */
54 # define SLAP_STRING_UNKNOWN "unknown"
55 #endif /* ! TCP Wrappers */
58 # include <sys/stat.h>
59 /* this should go in <ldap.h> as soon as it is accepted */
60 # define LDAPI_MOD_URLEXT "x-mod"
61 #endif /* LDAP_PF_LOCAL */
64 int slap_inet4or6 = AF_UNSPEC;
66 int slap_inet4or6 = AF_INET;
71 ber_socket_t dtblsize;
72 slap_ssf_t local_ssf = LDAP_PVT_SASL_LOCAL_SSF;
73 struct runqueue_s slapd_rq;
75 Listener **slap_listeners = NULL;
77 #ifndef SLAPD_LISTEN_BACKLOG
78 #define SLAPD_LISTEN_BACKLOG 1024
81 static ber_socket_t wake_sds[2];
84 static volatile int waking;
86 #define WAKE_LISTENER(w) do { \
87 if ((w) && ++waking < 5) { \
88 tcp_write( wake_sds[1], "0", 1 ); \
92 #define WAKE_LISTENER(w) do { \
94 tcp_write( wake_sds[1], "0", 1 ); \
99 volatile sig_atomic_t slapd_shutdown = 0;
100 volatile sig_atomic_t slapd_gentle_shutdown = 0;
101 volatile sig_atomic_t slapd_abrupt_shutdown = 0;
103 static struct slap_daemon {
104 ldap_pvt_thread_mutex_t sd_mutex;
106 ldap_pvt_thread_mutex_t tcpd_mutex;
109 ber_socket_t sd_nactives;
113 struct epoll_event *sd_epolls;
120 /* In winsock, accept() returns values higher than dtblsize
121 so don't bother with this optimization */
131 # define SLAP_EVENTS_ARE_INDEXED 0
132 # define SLAP_SOCK_IX(s) (slap_daemon.sd_index[(s)])
133 # define SLAP_SOCK_EP(s) (slap_daemon.sd_epolls[SLAP_SOCK_IX(s)])
134 # define SLAP_SOCK_EV(s) (SLAP_SOCK_EP(s).events)
135 # define SLAP_SOCK_IS_ACTIVE(s) (SLAP_SOCK_IX(s) != -1)
136 # define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_SOCK_IX(s) == -1)
137 # define SLAP_SOCK_IS_SET(s, mode) (SLAP_SOCK_EV(s) & (mode))
139 # define SLAP_SOCK_IS_READ(s) SLAP_SOCK_IS_SET((s), EPOLLIN)
140 # define SLAP_SOCK_IS_WRITE(s) SLAP_SOCK_IS_SET((s), EPOLLOUT)
142 # define SLAP_SET_SOCK(s, mode) do { \
143 if ((SLAP_SOCK_EV(s) & (mode)) != (mode)) { \
144 SLAP_SOCK_EV(s) |= (mode); \
145 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, (s), \
150 # define SLAP_CLR_SOCK(s, mode) do { \
151 if ((SLAP_SOCK_EV(s) & (mode))) { \
152 SLAP_SOCK_EV(s) &= ~(mode); \
153 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, s, \
158 # define SLAP_SOCK_SET_READ(s) SLAP_SET_SOCK(s, EPOLLIN)
159 # define SLAP_SOCK_SET_WRITE(s) SLAP_SET_SOCK(s, EPOLLOUT)
161 # ifdef SLAP_LIGHTWEIGHT_DISPATCHER
162 # define SLAP_SOCK_SET_SUSPEND(s) \
163 ( slap_daemon.sd_suspend[SLAP_SOCK_IX(s)] = 1 )
164 # define SLAP_SOCK_CLR_SUSPEND(s) \
165 ( slap_daemon.sd_suspend[SLAP_SOCK_IX(s)] = 0 )
166 # define SLAP_SOCK_IS_SUSPEND(s) \
167 ( slap_daemon.sd_suspend[SLAP_SOCK_IX(s)] == 1 )
170 # define SLAP_SOCK_CLR_READ(s) SLAP_CLR_SOCK((s), EPOLLIN)
171 # define SLAP_SOCK_CLR_WRITE(s) SLAP_CLR_SOCK((s), EPOLLOUT)
173 # define SLAP_CLR_EVENT(i, mode) (revents[(i)].events &= ~(mode))
175 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
177 /* If a Listener address is provided, store that as the epoll data.
178 * Otherwise, store the address of this socket's slot in the
179 * index array. If we can't do this add, the system is out of
180 * resources and we need to shutdown.
182 # define SLAP_ADD_SOCK(s, l) do { \
184 SLAP_SOCK_IX((s)) = slap_daemon.sd_nfds; \
185 SLAP_SOCK_EP((s)).data.ptr = (l) ? (l) : (void *)(&SLAP_SOCK_IX(s)); \
186 SLAP_SOCK_EV((s)) = EPOLLIN; \
187 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_ADD, \
188 (s), &SLAP_SOCK_EP((s))); \
190 slap_daemon.sd_nfds++; \
192 Debug( LDAP_DEBUG_ANY, \
193 "daemon: epoll_ctl(ADD,fd=%d) failed, errno=%d, shutting down\n", \
195 slapd_shutdown = 2; \
199 # define SLAP_EV_LISTENER(ptr) (((int *)(ptr) >= slap_daemon.sd_index && \
200 (int *)(ptr) <= (slap_daemon.sd_index+dtblsize)) ? 0 : 1 )
202 # define SLAP_EV_PTRFD(ptr) (SLAP_EV_LISTENER(ptr) ? \
203 ((Listener *)ptr)->sl_sd : (int *)(ptr) - slap_daemon.sd_index)
205 # define SLAP_DEL_SOCK(s) do { \
206 int fd, rc, index = SLAP_SOCK_IX((s)); \
207 if ( index < 0 ) break; \
208 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_DEL, \
209 (s), &SLAP_SOCK_EP((s))); \
210 slap_daemon.sd_epolls[index] = \
211 slap_daemon.sd_epolls[slap_daemon.sd_nfds-1]; \
212 fd = SLAP_EV_PTRFD(slap_daemon.sd_epolls[index].data.ptr); \
213 slap_daemon.sd_index[fd] = index; \
214 slap_daemon.sd_index[(s)] = -1; \
215 slap_daemon.sd_nfds--; \
218 # define SLAP_EVENT_CLR_READ(i) SLAP_CLR_EVENT((i), EPOLLIN)
219 # define SLAP_EVENT_CLR_WRITE(i) SLAP_CLR_EVENT((i), EPOLLOUT)
221 # define SLAP_CHK_EVENT(i, mode) (revents[(i)].events & mode)
223 # define SLAP_EVENT_IS_READ(i) SLAP_CHK_EVENT((i), EPOLLIN)
224 # define SLAP_EVENT_IS_WRITE(i) SLAP_CHK_EVENT((i), EPOLLOUT)
225 # define SLAP_EVENT_IS_LISTENER(i) SLAP_EV_LISTENER(revents[(i)].data.ptr)
226 # define SLAP_EVENT_LISTENER(i) ((Listener *)(revents[(i)].data.ptr))
228 # define SLAP_EVENT_FD(i) SLAP_EV_PTRFD(revents[(i)].data.ptr)
230 # define SLAP_SOCK_SET_INIT do { \
231 slap_daemon.sd_epolls = ch_calloc(1, \
232 sizeof(struct epoll_event) * dtblsize * 2); \
233 slap_daemon.sd_index = ch_malloc(sizeof(int) * dtblsize); \
234 slap_daemon.sd_epfd = epoll_create( dtblsize ); \
235 for (i=0; i<dtblsize; i++) slap_daemon.sd_index[i] = -1; \
238 #define SLAP_SOCK_SET_DESTROY do { \
239 if ( slap_daemon.sd_epolls != NULL ) { \
240 ch_free( slap_daemon.sd_epolls ); \
241 slap_daemon.sd_epolls = NULL; \
242 ch_free( slap_daemon.sd_index ); \
243 slap_daemon.sd_index = NULL; \
244 close( slap_daemon.sd_epfd ); \
248 # define SLAP_EVENT_DECL struct epoll_event *revents
250 # define SLAP_EVENT_INIT do { \
251 revents = slap_daemon.sd_epolls + dtblsize; \
254 # define SLAP_EVENT_WAIT(tvp) \
255 epoll_wait( slap_daemon.sd_epfd, revents, \
256 dtblsize, (tvp) ? (tvp)->tv_sec * 1000 : -1 )
261 # define SLAP_EVENTS_ARE_INDEXED 1
262 # define SLAP_EVENT_DECL \
263 fd_set readfds, writefds
265 # define SLAP_EVENT_INIT do { \
266 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) ); \
268 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) ); \
270 FD_ZERO( &writefds ); \
275 # define CHK_SETSIZE do { \
276 if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE; \
279 # define CHK_SETSIZE do { ; } while (0)
282 # define SLAP_SOCK_SET_INIT do { \
284 FD_ZERO(&slap_daemon.sd_readers); \
285 FD_ZERO(&slap_daemon.sd_writers); \
288 #define SLAP_SOCK_SET_DESTROY
290 # define SLAP_SOCK_IS_ACTIVE(fd) FD_ISSET((fd), &slap_daemon.sd_actives)
291 # define SLAP_SOCK_IS_READ(fd) FD_ISSET((fd), &slap_daemon.sd_readers)
292 # define SLAP_SOCK_IS_WRITE(fd) FD_ISSET((fd), &slap_daemon.sd_writers)
294 # define SLAP_SOCK_NOT_ACTIVE(fd) (!SLAP_SOCK_IS_ACTIVE(fd) && \
295 !SLAP_SOCK_IS_READ(fd) && !SLAP_SOCK_IS_WRITE(fd))
298 # define SLAP_SOCK_SET_READ(fd) do { \
299 if (!SLAP_SOCK_IS_READ(fd)) { FD_SET((fd), &slap_daemon.sd_readers); } \
301 # define SLAP_SOCK_SET_WRITE(fd) do { \
302 if (!SLAP_SOCK_IS_WRITE(fd)) { FD_SET((fd), &slap_daemon.sd_writers); } \
305 # define SLAP_ADDTEST(s)
306 # define SLAP_EVENT_MAX dtblsize
308 # define SLAP_SOCK_SET_READ(fd) FD_SET((fd), &slap_daemon.sd_readers)
309 # define SLAP_SOCK_SET_WRITE(fd) FD_SET((fd), &slap_daemon.sd_writers)
311 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
312 # define SLAP_ADDTEST(s) do { \
313 if ((s) >= slap_daemon.sd_nfds) slap_daemon.sd_nfds = (s)+1; \
317 # define SLAP_SOCK_CLR_READ(fd) FD_CLR((fd), &slap_daemon.sd_readers)
318 # define SLAP_SOCK_CLR_WRITE(fd) FD_CLR((fd), &slap_daemon.sd_writers)
320 # define SLAP_ADD_SOCK(s, l) do { \
322 FD_SET((s), &slap_daemon.sd_actives); \
323 FD_SET((s), &slap_daemon.sd_readers); \
326 # define SLAP_DEL_SOCK(s) do { \
327 FD_CLR((s), &slap_daemon.sd_actives); \
328 FD_CLR((s), &slap_daemon.sd_readers); \
329 FD_CLR((s), &slap_daemon.sd_writers); \
332 # define SLAP_EVENT_IS_READ(fd) FD_ISSET((fd), &readfds)
333 # define SLAP_EVENT_IS_WRITE(fd) FD_ISSET((fd), &writefds)
335 # define SLAP_EVENT_CLR_READ(fd) FD_CLR((fd), &readfds)
336 # define SLAP_EVENT_CLR_WRITE(fd) FD_CLR((fd), &writefds)
338 # define SLAP_EVENT_WAIT(tvp) \
339 select( SLAP_EVENT_MAX, &readfds, \
340 nwriters > 0 ? &writefds : NULL, NULL, (tvp) )
345 * SLP related functions
349 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
350 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
351 static char** slapd_srvurls = NULL;
352 static SLPHandle slapd_hslp = 0;
353 int slapd_register_slp = 0;
354 const char *slapd_slp_attrs = NULL;
356 static SLPError slapd_slp_cookie;
358 void slapd_slp_init( const char* urls ) {
362 slapd_srvurls = ldap_str2charray( urls, " " );
364 if( slapd_srvurls == NULL ) return;
366 /* find and expand INADDR_ANY URLs */
367 for( i=0; slapd_srvurls[i] != NULL; i++ ) {
368 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
369 char *host = ldap_pvt_get_fqdn( NULL );
370 if ( host != NULL ) {
371 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
373 sizeof( LDAP_SRVTYPE_PREFIX ) );
374 strcpy( lutil_strcopy(slapd_srvurls[i],
375 LDAP_SRVTYPE_PREFIX ), host );
380 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
381 char *host = ldap_pvt_get_fqdn( NULL );
382 if ( host != NULL ) {
383 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
385 sizeof( LDAPS_SRVTYPE_PREFIX ) );
386 strcpy( lutil_strcopy(slapd_srvurls[i],
387 LDAPS_SRVTYPE_PREFIX ), host );
394 /* open the SLP handle */
395 err = SLPOpen( "en", 0, &slapd_hslp );
398 Debug( LDAP_DEBUG_CONNS, "daemon: SLPOpen() failed with %ld\n",
403 void slapd_slp_deinit() {
404 if( slapd_srvurls == NULL ) return;
406 ldap_charray_free( slapd_srvurls );
407 slapd_srvurls = NULL;
409 /* close the SLP handle */
410 SLPClose( slapd_hslp );
413 void slapd_slp_regreport(
418 /* return the error code in the cookie */
419 *(SLPError*)cookie = errcode;
422 void slapd_slp_reg() {
426 if( slapd_srvurls == NULL ) return;
428 for( i=0; slapd_srvurls[i] != NULL; i++ ) {
429 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
430 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
431 strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
432 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
434 err = SLPReg( slapd_hslp,
436 SLP_LIFETIME_MAXIMUM,
438 (slapd_slp_attrs) ? slapd_slp_attrs : "",
443 if (err != SLP_OK || slapd_slp_cookie != SLP_OK) {
444 Debug( LDAP_DEBUG_CONNS,
445 "daemon: SLPReg(%s) failed with %ld, cookie = %ld\n",
446 slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
452 void slapd_slp_dereg() {
456 if( slapd_srvurls == NULL ) return;
458 for( i=0; slapd_srvurls[i] != NULL; i++ ) {
459 err = SLPDereg( slapd_hslp,
464 if (err != SLP_OK || slapd_slp_cookie != SLP_OK) {
465 Debug( LDAP_DEBUG_CONNS,
466 "daemon: SLPDereg(%s) failed with %ld, cookie = %ld\n",
467 slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
471 #endif /* HAVE_SLP */
474 * Add a descriptor to daemon control
476 * If isactive, the descriptor is a live server session and is subject
477 * to idletimeout control. Otherwise, the descriptor is a passive
478 * listener or an outbound client session, and not subject to
479 * idletimeout. The underlying event handler may record the Listener
480 * argument to differentiate Listener's from real sessions.
482 static void slapd_add(ber_socket_t s, int isactive, Listener *sl) {
483 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
485 assert( SLAP_SOCK_NOT_ACTIVE(s) );
487 if ( isactive ) slap_daemon.sd_nactives++;
489 SLAP_ADD_SOCK(s, sl);
491 Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr\n",
494 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
496 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
503 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
506 void slapd_sd_unlock()
508 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
512 * Remove the descriptor from daemon control
525 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
527 assert( SLAP_SOCK_IS_ACTIVE( s ));
529 if ( wasactive ) slap_daemon.sd_nactives--;
531 waswriter = SLAP_SOCK_IS_WRITE(s);
532 wasreader = SLAP_SOCK_IS_READ(s);
534 Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
536 wasreader ? "r" : "",
537 waswriter ? "w" : "" );
539 if ( waswriter ) slap_daemon.sd_nwriters--;
544 ber_sockbuf_free(sb);
546 /* If we ran out of file descriptors, we dropped a listener from
547 * the select() loop. Now that we're removing a session from our
548 * control, we can try to resume a dropped listener to use.
552 for ( i = 0; slap_listeners[i] != NULL; i++ ) {
553 Listener *lr = slap_listeners[i];
555 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
556 if ( lr->sl_sd == s ) continue;
563 /* Walked the entire list without enabling anything; emfile
564 * counter is stale. Reset it.
566 if ( slap_listeners[i] == NULL ) emfile = 0;
568 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
569 WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
572 void slapd_clr_write(ber_socket_t s, int wake) {
573 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
575 assert( SLAP_SOCK_IS_ACTIVE( s ));
577 if ( SLAP_SOCK_IS_WRITE( s )) {
578 SLAP_SOCK_CLR_WRITE( s );
579 slap_daemon.sd_nwriters--;
582 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
586 void slapd_set_write(ber_socket_t s, int wake) {
587 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
589 assert( SLAP_SOCK_IS_ACTIVE( s ));
591 if ( !SLAP_SOCK_IS_WRITE( s )) {
592 SLAP_SOCK_SET_WRITE( s );
593 slap_daemon.sd_nwriters++;
596 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
600 int slapd_clr_read(ber_socket_t s, int wake) {
602 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
604 if ( SLAP_SOCK_IS_ACTIVE( s )) {
605 SLAP_SOCK_CLR_READ( s );
608 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
614 void slapd_set_read(ber_socket_t s, int wake) {
615 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
617 assert( SLAP_SOCK_IS_ACTIVE( s ));
618 if (!SLAP_SOCK_IS_READ( s )) SLAP_SOCK_SET_READ( s );
620 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
624 static void slapd_close(ber_socket_t s) {
625 Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
630 static void slap_free_listener_addresses(struct sockaddr **sal) {
631 struct sockaddr **sap;
632 if (sal == NULL) return;
633 for (sap = sal; *sap != NULL; sap++) ch_free(*sap);
637 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
638 static int get_url_perms(
645 assert( exts != NULL );
646 assert( perms != NULL );
647 assert( crit != NULL );
650 for ( i = 0; exts[ i ]; i++ ) {
651 char *type = exts[ i ];
654 if ( type[ 0 ] == '!' ) {
659 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=",
660 sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 )
662 char *value = type + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
666 switch (strlen(value)) {
668 /* skip leading '0' */
669 if ( value[ 0 ] != '0' ) return LDAP_OTHER;
673 for ( j = 0; j < 3; j++) {
676 v = value[ j ] - '0';
678 if ( v < 0 || v > 7 ) return LDAP_OTHER;
685 for ( j = 1; j < 10; j++ ) {
686 static mode_t m[] = { 0,
687 S_IRUSR, S_IWUSR, S_IXUSR,
688 S_IRGRP, S_IWGRP, S_IXGRP,
689 S_IROTH, S_IWOTH, S_IXOTH
691 static char c[] = "-rwxrwxrwx";
693 if ( value[ j ] == c[ j ] ) {
696 } else if ( value[ j ] != '-' ) {
715 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
717 /* port = 0 indicates AF_LOCAL */
718 static int slap_get_listener_addresses(
721 struct sockaddr ***sal)
723 struct sockaddr **sap;
727 *sal = ch_malloc(2 * sizeof(void *));
728 if (*sal == NULL) return -1;
731 *sap = ch_malloc(sizeof(struct sockaddr_un));
732 if (*sap == NULL) goto errexit;
736 (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) )
738 Debug( LDAP_DEBUG_ANY,
739 "daemon: domain socket path (%s) too long in URL",
744 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
745 (*sap)->sa_family = AF_LOCAL;
746 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
750 #ifdef HAVE_GETADDRINFO
751 struct addrinfo hints, *res, *sai;
755 memset( &hints, '\0', sizeof(hints) );
756 hints.ai_flags = AI_PASSIVE;
757 hints.ai_socktype = SOCK_STREAM;
758 hints.ai_family = slap_inet4or6;
759 snprintf(serv, sizeof serv, "%d", port);
761 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
762 Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo() failed: %s\n",
763 AC_GAI_STRERROR(err), 0, 0);
768 for (n=2; (sai = sai->ai_next) != NULL; n++) {
771 *sal = ch_calloc(n, sizeof(void *));
772 if (*sal == NULL) return -1;
777 for ( sai=res; sai; sai=sai->ai_next ) {
778 if( sai->ai_addr == NULL ) {
779 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
780 "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
785 switch (sai->ai_family) {
786 # ifdef LDAP_PF_INET6
788 *sap = ch_malloc(sizeof(struct sockaddr_in6));
793 *(struct sockaddr_in6 *)*sap =
794 *((struct sockaddr_in6 *)sai->ai_addr);
798 *sap = ch_malloc(sizeof(struct sockaddr_in));
803 *(struct sockaddr_in *)*sap =
804 *((struct sockaddr_in *)sai->ai_addr);
812 (*sap)->sa_family = sai->ai_family;
823 struct hostent *he = NULL;
825 if ( host == NULL ) {
826 in.s_addr = htonl(INADDR_ANY);
828 } else if ( !inet_aton( host, &in ) ) {
829 he = gethostbyname( host );
831 Debug( LDAP_DEBUG_ANY,
832 "daemon: invalid host %s", host, 0, 0);
835 for (n = 0; he->h_addr_list[n]; n++) /* empty */;
838 *sal = ch_malloc((n+1) * sizeof(void *));
839 if (*sal == NULL) return -1;
842 for ( i = 0; i<n; i++ ) {
843 sap[i] = ch_malloc(sizeof(struct sockaddr_in));
844 if (*sap == NULL) goto errexit;
846 (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
847 sap[i]->sa_family = AF_INET;
848 ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
849 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr,
850 he ? (struct in_addr *)he->h_addr_list[i] : &in,
851 sizeof(struct in_addr) );
860 slap_free_listener_addresses(*sal);
864 static int slap_open_listener(
875 int err, addrlen = 0;
876 struct sockaddr **sal, **psal;
877 int socktype = SOCK_STREAM; /* default to COTS */
879 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
884 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
886 rc = ldap_url_parse( url, &lud );
888 if( rc != LDAP_URL_SUCCESS ) {
889 Debug( LDAP_DEBUG_ANY,
890 "daemon: listen URL \"%s\" parse error=%d\n",
895 l.sl_url.bv_val = NULL;
897 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
902 if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
903 Debug( LDAP_DEBUG_ANY, "daemon: TLS not supported (%s)\n",
905 ldap_free_urldesc( lud );
909 if(! lud->lud_port ) lud->lud_port = LDAP_PORT;
912 l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
914 if(! lud->lud_port ) {
915 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
919 port = (unsigned short) lud->lud_port;
921 tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
922 if ( tmp == LDAP_PROTO_IPC ) {
924 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
925 err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
927 err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
931 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
933 ldap_free_urldesc( lud );
937 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
938 || strcmp(lud->lud_host, "*") == 0 )
940 err = slap_get_listener_addresses(NULL, port, &sal);
942 err = slap_get_listener_addresses(lud->lud_host, port, &sal);
946 #ifdef LDAP_CONNECTIONLESS
947 l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
950 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
951 if ( lud->lud_exts ) {
952 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
954 l.sl_perms = S_IRWXU | S_IRWXO;
956 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
958 ldap_free_urldesc( lud );
959 if ( err ) return -1;
961 /* If we got more than one address returned, we need to make space
962 * for it in the slap_listeners array.
964 for ( num=0; sal[num]; num++ ) /* empty */;
967 slap_listeners = ch_realloc( slap_listeners,
968 (*listeners + 1) * sizeof(Listener *) );
972 while ( *sal != NULL ) {
974 switch( (*sal)->sa_family ) {
993 #ifdef LDAP_CONNECTIONLESS
994 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
997 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
998 if ( l.sl_sd == AC_SOCKET_INVALID ) {
999 int err = sock_errno();
1000 Debug( LDAP_DEBUG_ANY,
1001 "daemon: %s socket() failed errno=%d (%s)\n",
1002 af, err, sock_errstr(err) );
1007 #ifndef HAVE_WINSOCK
1008 if ( l.sl_sd >= dtblsize ) {
1009 Debug( LDAP_DEBUG_ANY,
1010 "daemon: listener descriptor %ld is too great %ld\n",
1011 (long) l.sl_sd, (long) dtblsize, 0 );
1012 tcp_close( l.sl_sd );
1018 #ifdef LDAP_PF_LOCAL
1019 if ( (*sal)->sa_family == AF_LOCAL ) {
1020 unlink( ((struct sockaddr_un *)*sal)->sun_path );
1025 /* enable address reuse */
1027 rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
1028 (char *) &tmp, sizeof(tmp) );
1029 if ( rc == AC_SOCKET_ERROR ) {
1030 int err = sock_errno();
1031 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1032 "setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
1033 (long) l.sl_sd, err, sock_errstr(err) );
1038 switch( (*sal)->sa_family ) {
1040 addrlen = sizeof(struct sockaddr_in);
1042 #ifdef LDAP_PF_INET6
1045 /* Try to use IPv6 sockets for IPv6 only */
1047 rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
1048 (char *) &tmp, sizeof(tmp) );
1049 if ( rc == AC_SOCKET_ERROR ) {
1050 int err = sock_errno();
1051 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1052 "setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
1053 (long) l.sl_sd, err, sock_errstr(err) );
1056 addrlen = sizeof(struct sockaddr_in6);
1060 #ifdef LDAP_PF_LOCAL
1065 setsockopt(l.sl_sd, 0, LOCAL_CREDS, &one, sizeof one);
1068 addrlen = sizeof(struct sockaddr_un);
1073 if (bind(l.sl_sd, *sal, addrlen)) {
1075 Debug( LDAP_DEBUG_ANY,
1076 "daemon: bind(%ld) failed errno=%d (%s)\n",
1077 (long) l.sl_sd, err, sock_errstr(err) );
1078 tcp_close( l.sl_sd );
1083 switch ( (*sal)->sa_family ) {
1084 #ifdef LDAP_PF_LOCAL
1086 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
1087 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
1088 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
1089 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
1092 #endif /* LDAP_PF_LOCAL */
1096 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1097 char addr[INET_ADDRSTRLEN];
1098 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
1099 addr, sizeof(addr) );
1102 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
1104 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
1106 ber_memalloc( sizeof("IP=255.255.255.255:65535") );
1107 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
1109 s != NULL ? s : SLAP_STRING_UNKNOWN, port );
1110 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1113 #ifdef LDAP_PF_INET6
1115 char addr[INET6_ADDRSTRLEN];
1116 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
1118 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
1119 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
1120 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
1121 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
1123 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1125 #endif /* LDAP_PF_INET6 */
1128 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
1129 (int) (*sal)->sa_family, 0, 0 );
1133 AC_MEMCPY(&l.sl_sa, *sal, addrlen);
1134 ber_str2bv( url, 0, 1, &l.sl_url);
1135 li = ch_malloc( sizeof( Listener ) );
1137 slap_listeners[*cur] = li;
1142 slap_free_listener_addresses(psal);
1144 if ( l.sl_url.bv_val == NULL ) {
1145 Debug( LDAP_DEBUG_TRACE,
1146 "slap_open_listener: failed on %s\n", url, 0, 0 );
1150 Debug( LDAP_DEBUG_TRACE, "daemon: listener initialized %s\n",
1151 l.sl_url.bv_val, 0, 0 );
1155 static int sockinit(void);
1156 static int sockdestroy(void);
1158 int slapd_daemon_init( const char *urls )
1163 Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
1164 urls ? urls : "<null>", 0, 0 );
1166 ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1168 ldap_pvt_thread_mutex_init( &slap_daemon.tcpd_mutex );
1171 if( (rc = sockinit()) != 0 ) return rc;
1174 dtblsize = sysconf( _SC_OPEN_MAX );
1175 #elif HAVE_GETDTABLESIZE
1176 dtblsize = getdtablesize();
1178 dtblsize = FD_SETSIZE;
1181 /* open a pipe (or something equivalent connected to itself).
1182 * we write a byte on this fd whenever we catch a signal. The main
1183 * loop will be select'ing on this socket, and will wake up when
1184 * this byte arrives.
1186 if( (rc = lutil_pair( wake_sds )) < 0 ) {
1187 Debug( LDAP_DEBUG_ANY,
1188 "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
1194 if( urls == NULL ) urls = "ldap:///";
1196 u = ldap_str2charray( urls, " " );
1198 if( u == NULL || u[0] == NULL ) {
1199 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1202 ldap_charray_free( u );
1206 for( i=0; u[i] != NULL; i++ ) {
1207 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1212 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1214 ldap_charray_free( u );
1218 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1220 slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1222 for(n = 0, j = 0; u[n]; n++ ) {
1223 if ( slap_open_listener( u[n], &i, &j ) ) {
1224 ldap_charray_free( u );
1228 slap_listeners[j] = NULL;
1230 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1235 if( slapd_register_slp ) {
1236 slapd_slp_init( urls );
1241 ldap_charray_free( u );
1248 slapd_daemon_destroy(void)
1250 connections_destroy();
1251 tcp_close( wake_sds[1] );
1252 tcp_close( wake_sds[0] );
1256 if( slapd_register_slp ) {
1263 ldap_pvt_thread_mutex_destroy( &slap_daemon.tcpd_mutex );
1266 ldap_pvt_thread_mutex_destroy( &slap_daemon.sd_mutex );
1277 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1278 Listener *lr = slap_listeners[l];
1280 if ( lr->sl_sd != AC_SOCKET_INVALID ) {
1281 if ( remove ) slapd_remove( lr->sl_sd, NULL, 0, 0, 0 );
1283 #ifdef LDAP_PF_LOCAL
1284 if ( lr->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1285 unlink( lr->sl_sa.sa_un_addr.sun_path );
1287 #endif /* LDAP_PF_LOCAL */
1289 slapd_close( lr->sl_sd );
1292 if ( lr->sl_url.bv_val ) {
1293 ber_memfree( lr->sl_url.bv_val );
1296 if ( lr->sl_name.bv_val ) {
1297 ber_memfree( lr->sl_name.bv_val );
1301 slap_listeners[l] = NULL;
1312 socklen_t len = sizeof(from);
1315 struct berval authid = BER_BVNULL;
1316 #ifdef SLAPD_RLOOKUPS
1317 char hbuf[NI_MAXHOST];
1320 char *dnsname = NULL;
1321 char *peeraddr = NULL;
1322 #ifdef LDAP_PF_LOCAL
1323 char peername[MAXPATHLEN + sizeof("PATH=")];
1324 #elif defined(LDAP_PF_INET6)
1325 char peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1327 char peername[sizeof("IP=255.255.255.255:65336")];
1328 #endif /* LDAP_PF_LOCAL */
1332 #ifdef LDAP_CONNECTIONLESS
1333 if ( sl->sl_is_udp ) return 1;
1336 # ifdef LDAP_PF_LOCAL
1337 /* FIXME: apparently accept doesn't fill
1338 * the sun_path sun_path member */
1339 from.sa_un_addr.sun_path[0] = '\0';
1340 # endif /* LDAP_PF_LOCAL */
1342 s = accept( sl->sl_sd, (struct sockaddr *) &from, &len );
1344 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1345 /* Resume the listener FD to allow concurrent-processing of
1346 * additional incoming connections.
1352 if ( s == AC_SOCKET_INVALID ) {
1353 int err = sock_errno();
1364 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1366 /* Stop listening until an existing session closes */
1368 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1371 Debug( LDAP_DEBUG_ANY,
1372 "daemon: accept(%ld) failed errno=%d (%s)\n",
1373 (long) sl->sl_sd, err, sock_errstr(err) );
1374 ldap_pvt_thread_yield();
1378 #ifndef HAVE_WINSOCK
1379 /* make sure descriptor number isn't too great */
1380 if ( s >= dtblsize ) {
1381 Debug( LDAP_DEBUG_ANY,
1382 "daemon: %ld beyond descriptor table size %ld\n",
1383 (long) s, (long) dtblsize, 0 );
1386 ldap_pvt_thread_yield();
1392 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1393 /* newly accepted stream should not be in any of the FD SETS */
1394 assert( SLAP_SOCK_NOT_ACTIVE( s ));
1395 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1398 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1399 #ifdef LDAP_PF_LOCAL
1400 /* for IPv4 and IPv6 sockets only */
1401 if ( from.sa_addr.sa_family != AF_LOCAL )
1402 #endif /* LDAP_PF_LOCAL */
1407 /* enable keep alives */
1409 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1410 (char *) &tmp, sizeof(tmp) );
1411 if ( rc == AC_SOCKET_ERROR ) {
1412 int err = sock_errno();
1413 Debug( LDAP_DEBUG_ANY,
1414 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1415 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1419 /* enable no delay */
1421 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1422 (char *)&tmp, sizeof(tmp) );
1423 if ( rc == AC_SOCKET_ERROR ) {
1424 int err = sock_errno();
1425 Debug( LDAP_DEBUG_ANY,
1426 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1427 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1433 Debug( LDAP_DEBUG_CONNS,
1434 "daemon: listen=%ld, new connection on %ld\n",
1435 (long) sl->sl_sd, (long) s, 0 );
1437 switch ( from.sa_addr.sa_family ) {
1438 # ifdef LDAP_PF_LOCAL
1440 /* FIXME: apparently accept doesn't fill
1441 * the sun_path sun_path member */
1442 if ( from.sa_un_addr.sun_path[0] == '\0' ) {
1443 AC_MEMCPY( from.sa_un_addr.sun_path,
1444 sl->sl_sa.sa_un_addr.sun_path,
1445 sizeof( from.sa_un_addr.sun_path ) );
1448 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1454 if( getpeereid( s, &uid, &gid ) == 0 ) {
1455 authid.bv_val = ch_malloc(
1456 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1457 "cn=peercred,cn=external,cn=auth" ) + 1 );
1458 authid.bv_len = sprintf( authid.bv_val,
1459 "gidNumber=%d+uidNumber=%d,"
1460 "cn=peercred,cn=external,cn=auth",
1461 (int) gid, (int) uid );
1462 assert( authid.bv_len <=
1463 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1464 "cn=peercred,cn=external,cn=auth" ) );
1469 #endif /* LDAP_PF_LOCAL */
1471 # ifdef LDAP_PF_INET6
1473 if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1474 peeraddr = inet_ntoa( *((struct in_addr *)
1475 &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1476 sprintf( peername, "IP=%s:%d",
1477 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1478 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1480 char addr[INET6_ADDRSTRLEN];
1482 peeraddr = (char *) inet_ntop( AF_INET6,
1483 &from.sa_in6_addr.sin6_addr,
1484 addr, sizeof addr );
1485 sprintf( peername, "IP=%s %d",
1486 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1487 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1490 # endif /* LDAP_PF_INET6 */
1493 peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1494 sprintf( peername, "IP=%s:%d",
1495 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1496 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1504 if ( ( from.sa_addr.sa_family == AF_INET )
1505 #ifdef LDAP_PF_INET6
1506 || ( from.sa_addr.sa_family == AF_INET6 )
1511 #ifdef SLAPD_RLOOKUPS
1512 if ( use_reverse_lookup ) {
1514 if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
1515 sizeof(hbuf), &herr ) == 0) {
1516 ldap_pvt_str2lower( hbuf );
1520 #endif /* SLAPD_RLOOKUPS */
1525 ldap_pvt_thread_mutex_lock( &slap_daemon.tcpd_mutex );
1526 rc = hosts_ctl("slapd",
1527 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1528 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1529 SLAP_STRING_UNKNOWN );
1530 ldap_pvt_thread_mutex_unlock( &slap_daemon.tcpd_mutex );
1533 Statslog( LDAP_DEBUG_STATS,
1534 "fd=%ld DENIED from %s (%s)\n",
1536 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1537 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1543 #endif /* HAVE_TCPD */
1546 id = connection_init(s, sl,
1547 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1550 sl->sl_is_tls ? CONN_IS_TLS : 0,
1555 authid.bv_val ? &authid : NULL );
1557 if( authid.bv_val ) ch_free(authid.bv_val);
1560 Debug( LDAP_DEBUG_ANY,
1561 "daemon: connection_init(%ld, %s, %s) failed.\n",
1562 (long) s, peername, sl->sl_name.bv_val );
1567 Statslog( LDAP_DEBUG_STATS,
1568 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1569 id, (long) s, peername, sl->sl_name.bv_val,
1575 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1577 slap_listener_thread(
1583 rc = slap_listener( (Listener*)ptr );
1585 if( rc != LDAP_SUCCESS ) {
1586 Debug( LDAP_DEBUG_ANY,
1587 "listener_thread: failed %d", rc, 0, 0 );
1594 slap_listener_activate(
1599 Debug( LDAP_DEBUG_TRACE, "slap_listener_activate(%d): %s\n",
1600 sl->sl_sd, sl->sl_busy ? "busy" : "", 0 );
1604 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1605 slap_listener_thread, (void *) sl );
1608 Debug( LDAP_DEBUG_ANY,
1609 "listener_activate(%d): submit failed (%d)\n",
1621 time_t last_idle_check = 0;
1622 struct timeval idle;
1625 #define SLAPD_IDLE_CHECK_LIMIT 4
1627 if ( global_idletimeout > 0 ) {
1628 last_idle_check = slap_get_time();
1629 /* Set the select timeout.
1630 * Don't just truncate, preserve the fractions of
1631 * seconds to prevent sleeping for zero time.
1633 idle.tv_sec = global_idletimeout / SLAPD_IDLE_CHECK_LIMIT;
1634 idle.tv_usec = global_idletimeout - \
1635 ( idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT );
1636 idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
1642 slapd_add( wake_sds[0], 0, NULL );
1644 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1645 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
1647 #ifdef LDAP_CONNECTIONLESS
1648 /* Since this is connectionless, the data port is the
1649 * listening port. The listen() and accept() calls
1652 if ( slap_listeners[l]->sl_is_udp )
1656 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN_BACKLOG ) == -1 ) {
1657 int err = sock_errno();
1659 #ifdef LDAP_PF_INET6
1660 /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1661 * we are already listening to in6addr_any, then we want to ignore
1662 * this and continue.
1664 if ( err == EADDRINUSE ) {
1666 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1667 struct sockaddr_in6 sa6;
1669 if ( sa.sin_family == AF_INET &&
1670 sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1671 for ( i = 0 ; i < l; i++ ) {
1672 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1673 if ( sa6.sin6_family == AF_INET6 &&
1674 !memcmp( &sa6.sin6_addr, &in6addr_any,
1675 sizeof(struct in6_addr) ) )
1682 /* We are already listening to in6addr_any */
1683 Debug( LDAP_DEBUG_CONNS,
1684 "daemon: Attempt to listen to 0.0.0.0 failed, "
1685 "already listening on ::, assuming IPv4 included\n",
1687 slapd_close( slap_listeners[l]->sl_sd );
1688 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1694 Debug( LDAP_DEBUG_ANY,
1695 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1696 slap_listeners[l]->sl_url.bv_val, err,
1701 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1702 /* make the listening socket non-blocking */
1703 if ( ber_pvt_socket_set_nonblock( slap_listeners[l]->sl_sd, 1 ) < 0 ) {
1704 Debug( LDAP_DEBUG_ANY, "slapd_daemon_task: "
1705 "set nonblocking on a listening socket failed\n",
1712 slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l] );
1715 #ifdef HAVE_NT_SERVICE_MANAGER
1716 if ( started_event != NULL ) {
1717 ldap_pvt_thread_cond_signal( &started_event );
1721 #ifdef SLAP_SEM_LOAD_CONTROL
1723 * initialize count and lazyness of a semaphore
1725 (void) ldap_lazy_sem_init(
1726 SLAP_MAX_WORKER_THREADS + 4 /* max workers + margin */,
1730 /* initialization complete. Here comes the loop. */
1732 while ( !slapd_shutdown ) {
1737 #if SLAP_EVENTS_ARE_INDEXED
1738 ber_socket_t nrfds, nwfds;
1740 #define SLAPD_EBADF_LIMIT 16
1747 struct timeval *tvp;
1752 now = slap_get_time();
1754 if( ( global_idletimeout > 0 ) &&
1755 difftime( last_idle_check +
1756 global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1757 connections_timeout_idle( now );
1758 last_idle_check = now;
1763 if( slapd_gentle_shutdown ) {
1764 ber_socket_t active;
1766 if( slapd_gentle_shutdown == 1 ) {
1768 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1769 close_listeners( 1 );
1770 frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
1771 LDAP_STAILQ_FOREACH(be, &backendDB, be_next) {
1772 be->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
1774 slapd_gentle_shutdown = 2;
1777 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1778 active = slap_daemon.sd_nactives;
1779 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1788 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1790 nwriters = slap_daemon.sd_nwriters;
1792 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1793 Listener *lr = slap_listeners[l];
1795 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
1797 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1798 if ( lr->sl_mute || lr->sl_busy )
1803 SLAP_SOCK_CLR_READ( lr->sl_sd );
1805 SLAP_SOCK_SET_READ( lr->sl_sd );
1811 nfds = SLAP_EVENT_MAX;
1813 if ( global_idletimeout && slap_daemon.sd_nactives ) at = 1;
1815 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1818 #if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
1819 && ( tv.tv_sec || tv.tv_usec )
1828 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1829 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
1830 while ( rtask && cat.tv_sec && cat.tv_sec <= now ) {
1831 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
1832 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1834 ldap_pvt_runqueue_runtask( &slapd_rq, rtask );
1835 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1836 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1837 ldap_pvt_thread_pool_submit( &connection_pool,
1838 rtask->routine, (void *) rtask );
1839 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1841 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
1843 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1845 if ( rtask && cat.tv_sec ) {
1846 time_t diff = difftime( cat.tv_sec, now );
1847 if ( diff == 0 ) diff = tdelta;
1848 if ( tvp == NULL || diff < tv.tv_sec ) {
1855 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1856 Listener *lr = slap_listeners[l];
1858 if ( lr->sl_sd == AC_SOCKET_INVALID ) {
1862 if ( lr->sl_mute ) {
1863 Debug( LDAP_DEBUG_CONNS,
1864 "daemon: select: listen=%d muted\n",
1869 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1870 if ( lr->sl_busy ) {
1871 Debug( LDAP_DEBUG_CONNS,
1872 "daemon: select: listen=%d busy\n",
1878 Debug( LDAP_DEBUG_CONNS,
1879 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1880 lr->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
1883 switch(ns = SLAP_EVENT_WAIT(tvp)) {
1884 case -1: { /* failure - try again */
1885 int err = sock_errno();
1887 if( err != EINTR ) {
1890 /* Don't log unless we got it twice in a row */
1891 if ( !( ebadf & 1 )) {
1892 Debug( LDAP_DEBUG_ANY,
1893 "daemon: select failed count %d err (%d): %s\n",
1894 ebadf, err, sock_errstr(err) );
1896 if ( ebadf >= SLAPD_EBADF_LIMIT )
1902 case 0: /* timeout - let threads run */
1904 #ifndef HAVE_YIELDING_SELECT
1905 Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1908 ldap_pvt_thread_yield();
1912 default: /* something happened - deal with it */
1913 if( slapd_shutdown ) continue;
1916 Debug( LDAP_DEBUG_CONNS,
1917 "daemon: activity on %d descriptor%s\n",
1918 ns, ns != 1 ? "s" : "", 0 );
1922 #if SLAP_EVENTS_ARE_INDEXED
1923 if ( SLAP_EVENT_IS_READ( wake_sds[0] )) {
1925 SLAP_EVENT_CLR_READ( wake_sds[0] );
1927 tcp_read( wake_sds[0], c, sizeof(c) );
1928 Debug( LDAP_DEBUG_CONNS, "daemon: waked\n", 0, 0, 0 );
1932 /* The event slot equals the descriptor number - this is
1933 * true for Unix select and poll. We treat Windows select
1934 * like this too, even though it's a kludge.
1936 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1939 if ( ns <= 0 ) break;
1940 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
1941 #ifdef LDAP_CONNECTIONLESS
1942 if ( slap_listeners[l]->sl_is_udp ) continue;
1944 if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd )) continue;
1947 SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
1948 SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
1951 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1952 rc = slap_listener_activate(slap_listeners[l]);
1954 rc = slap_listener(slap_listeners[l]);
1958 /* bypass the following tests if no descriptors left */
1960 #ifndef HAVE_YIELDING_SELECT
1961 ldap_pvt_thread_yield();
1966 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1968 nrfds = readfds.fd_count;
1969 nwfds = writefds.fd_count;
1970 for ( i = 0; i < readfds.fd_count; i++ ) {
1971 Debug( LDAP_DEBUG_CONNS, " %d%s",
1972 readfds.fd_array[i], "r", 0 );
1974 for ( i = 0; i < writefds.fd_count; i++ ) {
1975 Debug( LDAP_DEBUG_CONNS, " %d%s",
1976 writefds.fd_array[i], "w", 0 );
1982 for ( i = 0; i < nfds; i++ ) {
1985 r = SLAP_EVENT_IS_READ( i );
1986 /* writefds was not initialized if nwriters was zero */
1987 w = nwriters ? SLAP_EVENT_IS_WRITE( i ) : 0;
1989 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1990 r ? "r" : "", w ? "w" : "" );
2000 if ( ns <= 0 ) break;
2003 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2006 /* loop through the writers */
2007 for ( i = 0; nwfds > 0; i++ ) {
2010 wd = writefds.fd_array[i];
2012 if( ! SLAP_EVENT_IS_WRITE( i ) ) continue;
2016 SLAP_EVENT_CLR_WRITE( wd );
2019 Debug( LDAP_DEBUG_CONNS,
2020 "daemon: write active on %d\n",
2024 * NOTE: it is possible that the connection was closed
2025 * and that the stream is now inactive.
2026 * connection_write() must validate the stream is still
2029 * ITS#4338: if the stream is invalid, there is no need to
2030 * close it here. It has already been closed in connection.c.
2032 if ( connection_write( wd ) < 0 ) {
2033 if ( SLAP_EVENT_IS_READ( wd )) {
2034 SLAP_EVENT_CLR_READ( (unsigned) wd );
2040 for ( i = 0; nrfds > 0; i++ ) {
2043 rd = readfds.fd_array[i];
2045 if( ! SLAP_EVENT_IS_READ( i ) ) continue;
2048 SLAP_EVENT_CLR_READ( rd );
2051 Debug ( LDAP_DEBUG_CONNS,
2052 "daemon: read activity on %d\n", rd, 0, 0 );
2054 * NOTE: it is possible that the connection was closed
2055 * and that the stream is now inactive.
2056 * connection_read() must valid the stream is still
2060 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2061 connection_read_activate( rd );
2063 connection_read( rd );
2066 #else /* !SLAP_EVENTS_ARE_INDEXED */
2068 /* The events are returned in an arbitrary list. This is true
2069 * for /dev/poll, epoll and kqueue. In order to prioritize things
2070 * so that we can handle wake_sds first, listeners second, and then
2071 * all other connections last (as we do for select), we would need
2072 * to use multiple event handles and cascade them.
2074 * That seems like a bit of hassle. So the wake_sds check has been
2075 * skipped. For epoll and kqueue we can associate arbitrary data with
2076 * an event, so we could use pointers to the listener structure
2077 * instead of just the file descriptor. For /dev/poll we have to
2078 * search the listeners array for a matching descriptor.
2080 * We now handle wake events when we see them; they are not given
2084 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
2086 for (i=0; i<ns; i++) {
2089 /* Don't log listener events */
2090 if ( SLAP_EVENT_IS_LISTENER(i)
2091 #ifdef LDAP_CONNECTIONLESS
2092 && !((SLAP_EVENT_LISTENER(i))->sl_is_udp)
2099 /* Don't log internal wake events */
2100 if ( SLAP_EVENT_FD( i ) == wake_sds[0] ) continue;
2102 r = SLAP_EVENT_IS_READ( i );
2103 w = SLAP_EVENT_IS_WRITE( i );
2105 Debug( LDAP_DEBUG_CONNS, " %d%s%s", SLAP_EVENT_FD(i),
2106 r ? "r" : "", w ? "w" : "" );
2109 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2112 for (i=0; i<ns; i++) {
2115 if ( SLAP_EVENT_IS_LISTENER(i) ) {
2116 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2117 rc = slap_listener_activate( SLAP_EVENT_LISTENER( i ));
2119 rc = slap_listener( SLAP_EVENT_LISTENER( i ));
2123 /* If we found a regular listener, rc is now zero, and we
2124 * can skip the data portion. But if it was a UDP listener
2125 * then rc is still 1, and we want to handle the data.
2128 fd = SLAP_EVENT_FD( i );
2130 /* Handle wake events */
2131 if ( fd == wake_sds[0] ) {
2134 tcp_read( wake_sds[0], c, sizeof(c) );
2138 if( SLAP_EVENT_IS_WRITE( i ) ) {
2139 Debug( LDAP_DEBUG_CONNS,
2140 "daemon: write active on %d\n",
2143 SLAP_EVENT_CLR_WRITE( i );
2146 * NOTE: it is possible that the connection was closed
2147 * and that the stream is now inactive.
2148 * connection_write() must valid the stream is still
2151 if ( connection_write( fd ) < 0 ) {
2155 /* If event is a read */
2156 if( SLAP_EVENT_IS_READ( i )) {
2157 Debug( LDAP_DEBUG_CONNS,
2158 "daemon: read active on %d\n",
2161 SLAP_EVENT_CLR_READ( i );
2162 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2163 connection_read_activate( fd );
2166 * NOTE: it is possible that the connection was closed
2167 * and that the stream is now inactive.
2168 * connection_read() must valid the stream is still
2171 connection_read( fd );
2174 Debug( LDAP_DEBUG_CONNS,
2175 "daemon: hangup on %d\n", fd, 0, 0 );
2179 #endif /* SLAP_EVENTS_ARE_INDEXED */
2181 #ifndef HAVE_YIELDING_SELECT
2182 ldap_pvt_thread_yield();
2186 if( slapd_shutdown == 1 ) {
2187 Debug( LDAP_DEBUG_ANY,
2188 "daemon: shutdown requested and initiated.\n",
2191 } else if ( slapd_shutdown == 2 ) {
2192 #ifdef HAVE_NT_SERVICE_MANAGER
2193 Debug( LDAP_DEBUG_ANY,
2194 "daemon: shutdown initiated by Service Manager.\n",
2196 #else /* !HAVE_NT_SERVICE_MANAGER */
2197 Debug( LDAP_DEBUG_ANY,
2198 "daemon: abnormal condition, shutdown initiated.\n",
2200 #endif /* !HAVE_NT_SERVICE_MANAGER */
2202 Debug( LDAP_DEBUG_ANY,
2203 "daemon: no active streams, shutdown initiated.\n",
2207 if( slapd_gentle_shutdown != 2 ) close_listeners ( 0 );
2209 if( !slapd_gentle_shutdown ) {
2210 slapd_abrupt_shutdown = 1;
2211 connections_shutdown();
2214 Debug( LDAP_DEBUG_ANY,
2215 "slapd shutdown: waiting for %d threads to terminate\n",
2216 ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
2217 ldap_pvt_thread_pool_destroy(&connection_pool, 1);
2219 free ( slap_listeners );
2220 slap_listeners = NULL;
2226 #ifdef LDAP_CONNECTIONLESS
2227 static int connectionless_init(void)
2231 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2232 Listener *lr = slap_listeners[l];
2235 if( !lr->sl_is_udp ) {
2239 id = connection_init( lr->sl_sd, lr, "", "", CONN_IS_UDP, (slap_ssf_t) 0, NULL );
2242 Debug( LDAP_DEBUG_TRACE,
2243 "connectionless_init: failed on %s (%d)\n", lr->sl_url, lr->sl_sd, 0 );
2251 #endif /* LDAP_CONNECTIONLESS */
2253 int slapd_daemon( void )
2258 #ifdef LDAP_CONNECTIONLESS
2259 connectionless_init();
2262 #define SLAPD_LISTENER_THREAD 1
2263 #if defined( SLAPD_LISTENER_THREAD )
2265 ldap_pvt_thread_t listener_tid;
2267 /* listener as a separate THREAD */
2268 rc = ldap_pvt_thread_create( &listener_tid,
2269 0, slapd_daemon_task, NULL );
2272 Debug( LDAP_DEBUG_ANY,
2273 "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2277 /* wait for the listener thread to complete */
2278 ldap_pvt_thread_join( listener_tid, (void *) NULL );
2281 /* experimental code */
2282 slapd_daemon_task( NULL );
2289 static int sockinit(void)
2291 #if defined( HAVE_WINSOCK2 )
2292 WORD wVersionRequested;
2296 wVersionRequested = MAKEWORD( 2, 0 );
2298 err = WSAStartup( wVersionRequested, &wsaData );
2300 /* Tell the user that we couldn't find a usable */
2305 /* Confirm that the WinSock DLL supports 2.0.*/
2306 /* Note that if the DLL supports versions greater */
2307 /* than 2.0 in addition to 2.0, it will still return */
2308 /* 2.0 in wVersion since that is the version we */
2311 if ( LOBYTE( wsaData.wVersion ) != 2 ||
2312 HIBYTE( wsaData.wVersion ) != 0 )
2314 /* Tell the user that we couldn't find a usable */
2320 /* The WinSock DLL is acceptable. Proceed. */
2321 #elif defined( HAVE_WINSOCK )
2323 if ( WSAStartup( 0x0101, &wsaData ) != 0 ) return -1;
2329 static int sockdestroy(void)
2331 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2334 SLAP_SOCK_SET_DESTROY;
2340 slap_sig_shutdown( int sig )
2343 Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2347 * If the NT Service Manager is controlling the server, we don't
2348 * want SIGBREAK to kill the server. For some strange reason,
2349 * SIGBREAK is generated when a user logs out.
2352 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2353 if (is_NT_Service && sig == SIGBREAK) {
2358 if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0) {
2359 slapd_gentle_shutdown = 1;
2368 /* reinstall self */
2369 (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2373 slap_sig_wake( int sig )
2377 /* reinstall self */
2378 (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2382 void slapd_add_internal(ber_socket_t s, int isactive) {
2383 slapd_add(s, isactive, NULL);
2386 Listener ** slapd_get_listeners(void) {
2387 return slap_listeners;
2390 void slap_wake_listener() {