2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2005 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];
85 #define WAKE_LISTENER(w) do { \
86 if ((w) && waking < 5) { \
88 tcp_write( wake_sds[1], "0", 1 ); \
92 volatile sig_atomic_t slapd_shutdown = 0;
93 volatile sig_atomic_t slapd_gentle_shutdown = 0;
94 volatile sig_atomic_t slapd_abrupt_shutdown = 0;
96 static struct slap_daemon {
97 ldap_pvt_thread_mutex_t sd_mutex;
99 ber_socket_t sd_nactives;
103 struct epoll_event *sd_epolls;
110 /* In winsock, accept() returns values higher than dtblsize
111 so don't bother with this optimization */
121 # define SLAP_EVENTS_ARE_INDEXED 0
122 # define SLAP_SOCK_IX(s) (slap_daemon.sd_index[(s)])
123 # define SLAP_SOCK_EP(s) (slap_daemon.sd_epolls[SLAP_SOCK_IX(s)])
124 # define SLAP_SOCK_EV(s) (SLAP_SOCK_EP(s).events)
125 # define SLAP_SOCK_IS_ACTIVE(s) (SLAP_SOCK_IX(s) != -1)
126 # define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_SOCK_IX(s) == -1)
127 # define SLAP_SOCK_IS_SET(s, mode) (SLAP_SOCK_EV(s) & (mode))
129 # define SLAP_SOCK_IS_READ(s) SLAP_SOCK_IS_SET((s), EPOLLIN)
130 # define SLAP_SOCK_IS_WRITE(s) SLAP_SOCK_IS_SET((s), EPOLLOUT)
132 # define SLAP_SET_SOCK(s, mode) do { \
133 if ((SLAP_SOCK_EV(s) & (mode)) != (mode)) { \
134 SLAP_SOCK_EV(s) |= (mode); \
135 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, (s), \
140 # define SLAP_CLR_SOCK(s, mode) do { \
141 if ((SLAP_SOCK_EV(s) & (mode))) { \
142 SLAP_SOCK_EV(s) &= ~(mode); \
143 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, s, \
148 # define SLAP_SOCK_SET_READ(s) SLAP_SET_SOCK(s, EPOLLIN)
149 # define SLAP_SOCK_SET_WRITE(s) SLAP_SET_SOCK(s, EPOLLOUT)
151 # ifdef SLAP_LIGHTWEIGHT_DISPATCHER
152 # define SLAP_SOCK_SET_SUSPEND(s) \
153 ( slap_daemon.sd_suspend[SLAP_SOCK_IX(s)] = 1 )
154 # define SLAP_SOCK_CLR_SUSPEND(s) \
155 ( slap_daemon.sd_suspend[SLAP_SOCK_IX(s)] = 0 )
156 # define SLAP_SOCK_IS_SUSPEND(s) \
157 ( slap_daemon.sd_suspend[SLAP_SOCK_IX(s)] == 1 )
160 # define SLAP_SOCK_CLR_READ(s) SLAP_CLR_SOCK((s), EPOLLIN)
161 # define SLAP_SOCK_CLR_WRITE(s) SLAP_CLR_SOCK((s), EPOLLOUT)
163 # define SLAP_CLR_EVENT(i, mode) (revents[(i)].events &= ~(mode))
165 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
167 /* If a Listener address is provided, store that as the epoll data.
168 * Otherwise, store the address of this socket's slot in the
169 * index array. If we can't do this add, the system is out of
170 * resources and we need to shutdown.
172 # define SLAP_ADD_SOCK(s, l) do { \
174 SLAP_SOCK_IX((s)) = slap_daemon.sd_nfds; \
175 SLAP_SOCK_EP((s)).data.ptr = (l) ? (l) : (void *)(&SLAP_SOCK_IX(s)); \
176 SLAP_SOCK_EV((s)) = EPOLLIN; \
177 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_ADD, \
178 (s), &SLAP_SOCK_EP((s))); \
180 slap_daemon.sd_nfds++; \
182 Debug( LDAP_DEBUG_ANY, \
183 "daemon: epoll_ctl(ADD,fd=%d) failed, errno=%d, shutting down\n", \
185 slapd_shutdown = 2; \
189 # define SLAP_EV_LISTENER(ptr) (((int *)(ptr) >= slap_daemon.sd_index && \
190 (int *)(ptr) <= (slap_daemon.sd_index+dtblsize)) ? 0 : 1 )
192 # define SLAP_EV_PTRFD(ptr) (SLAP_EV_LISTENER(ptr) ? \
193 ((Listener *)ptr)->sl_sd : (int *)(ptr) - slap_daemon.sd_index)
195 # define SLAP_DEL_SOCK(s) do { \
196 int fd, rc, index = SLAP_SOCK_IX((s)); \
197 if ( index < 0 ) break; \
198 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_DEL, \
199 (s), &SLAP_SOCK_EP((s))); \
200 slap_daemon.sd_epolls[index] = \
201 slap_daemon.sd_epolls[slap_daemon.sd_nfds-1]; \
202 fd = SLAP_EV_PTRFD(slap_daemon.sd_epolls[index].data.ptr); \
203 slap_daemon.sd_index[fd] = index; \
204 slap_daemon.sd_index[(s)] = -1; \
205 slap_daemon.sd_nfds--; \
208 # define SLAP_EVENT_CLR_READ(i) SLAP_CLR_EVENT((i), EPOLLIN)
209 # define SLAP_EVENT_CLR_WRITE(i) SLAP_CLR_EVENT((i), EPOLLOUT)
211 # define SLAP_CHK_EVENT(i, mode) (revents[(i)].events & mode)
213 # define SLAP_EVENT_IS_READ(i) SLAP_CHK_EVENT((i), EPOLLIN)
214 # define SLAP_EVENT_IS_WRITE(i) SLAP_CHK_EVENT((i), EPOLLOUT)
215 # define SLAP_EVENT_IS_LISTENER(i) SLAP_EV_LISTENER(revents[(i)].data.ptr)
216 # define SLAP_EVENT_LISTENER(i) (revents[(i)].data.ptr)
218 # define SLAP_EVENT_FD(i) SLAP_EV_PTRFD(revents[(i)].data.ptr)
220 # define SLAP_SOCK_SET_INIT do { \
221 slap_daemon.sd_epolls = ch_calloc(1, \
222 sizeof(struct epoll_event) * dtblsize * 2); \
223 slap_daemon.sd_index = ch_malloc(sizeof(int) * dtblsize); \
224 slap_daemon.sd_epfd = epoll_create( dtblsize ); \
225 for (i=0; i<dtblsize; i++) slap_daemon.sd_index[i] = -1; \
228 # define SLAP_EVENT_DECL struct epoll_event *revents
230 # define SLAP_EVENT_INIT do { \
231 revents = slap_daemon.sd_epolls + dtblsize; \
234 # define SLAP_EVENT_WAIT(tvp) \
235 epoll_wait( slap_daemon.sd_epfd, revents, \
236 dtblsize, (tvp) ? (tvp)->tv_sec * 1000 : -1 )
241 # define SLAP_EVENTS_ARE_INDEXED 1
242 # define SLAP_EVENT_DECL \
243 fd_set readfds, writefds
245 # define SLAP_EVENT_INIT do { \
246 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) ); \
248 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) ); \
250 FD_ZERO( &writefds ); \
255 # define CHK_SETSIZE do { \
256 if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE; \
259 # define CHK_SETSIZE do { ; } while (0)
262 # define SLAP_SOCK_SET_INIT do { \
264 FD_ZERO(&slap_daemon.sd_readers); \
265 FD_ZERO(&slap_daemon.sd_writers); \
268 # define SLAP_SOCK_IS_ACTIVE(fd) FD_ISSET((fd), &slap_daemon.sd_actives)
269 # define SLAP_SOCK_IS_READ(fd) FD_ISSET((fd), &slap_daemon.sd_readers)
270 # define SLAP_SOCK_IS_WRITE(fd) FD_ISSET((fd), &slap_daemon.sd_writers)
272 # define SLAP_SOCK_NOT_ACTIVE(fd) (!SLAP_SOCK_IS_ACTIVE(fd) && \
273 !SLAP_SOCK_IS_READ(fd) && !SLAP_SOCK_IS_WRITE(fd))
276 # define SLAP_SOCK_SET_READ(fd) do { \
277 if (!SLAP_SOCK_IS_READ(fd)) { FD_SET((fd), &slap_daemon.sd_readers); } \
279 # define SLAP_SOCK_SET_WRITE(fd) do { \
280 if (!SLAP_SOCK_IS_WRITE(fd)) { FD_SET((fd), &slap_daemon.sd_writers); } \
283 # define SLAP_ADDTEST(s) do { } while 0
284 # define SLAP_EVENT_MAX dtblsize
286 # define SLAP_SOCK_SET_READ(fd) FD_SET((fd), &slap_daemon.sd_readers)
287 # define SLAP_SOCK_SET_WRITE(fd) FD_SET((fd), &slap_daemon.sd_writers)
289 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
290 # define SLAP_ADDTEST(s) do { \
291 if ((s) >= slap_daemon.sd_nfds) slap_daemon.sd_nfds = (s)+1; \
295 # define SLAP_SOCK_CLR_READ(fd) FD_CLR((fd), &slap_daemon.sd_readers)
296 # define SLAP_SOCK_CLR_WRITE(fd) FD_CLR((fd), &slap_daemon.sd_writers)
298 # define SLAP_ADD_SOCK(s, l) do { \
300 FD_SET((s), &slap_daemon.sd_actives); \
301 FD_SET((s), &slap_daemon.sd_readers); \
304 # define SLAP_DEL_SOCK(s) do { \
305 FD_CLR((s), &slap_daemon.sd_actives); \
306 FD_CLR((s), &slap_daemon.sd_readers); \
307 FD_CLR((s), &slap_daemon.sd_writers); \
310 # define SLAP_EVENT_IS_READ(fd) FD_ISSET((fd), &readfds)
311 # define SLAP_EVENT_IS_WRITE(fd) FD_ISSET((fd), &writefds)
313 # define SLAP_EVENT_CLR_READ(fd) FD_CLR((fd), &readfds)
314 # define SLAP_EVENT_CLR_WRITE(fd) FD_CLR((fd), &writefds)
316 # define SLAP_EVENT_WAIT(tvp) \
317 select( SLAP_EVENT_MAX, &readfds, \
318 nwriters > 0 ? &writefds : NULL, NULL, (tvp) )
323 * SLP related functions
327 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
328 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
329 static char** slapd_srvurls = NULL;
330 static SLPHandle slapd_hslp = 0;
331 int slapd_register_slp = 0;
333 void slapd_slp_init( const char* urls ) {
336 slapd_srvurls = ldap_str2charray( urls, " " );
338 if( slapd_srvurls == NULL ) return;
340 /* find and expand INADDR_ANY URLs */
341 for( i=0; slapd_srvurls[i] != NULL; i++ ) {
342 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
343 char *host = ldap_pvt_get_fqdn( NULL );
344 if ( host != NULL ) {
345 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
347 sizeof( LDAP_SRVTYPE_PREFIX ) );
348 strcpy( lutil_strcopy(slapd_srvurls[i],
349 LDAP_SRVTYPE_PREFIX ), host );
354 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
355 char *host = ldap_pvt_get_fqdn( NULL );
356 if ( host != NULL ) {
357 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
359 sizeof( LDAPS_SRVTYPE_PREFIX ) );
360 strcpy( lutil_strcopy(slapd_srvurls[i],
361 LDAPS_SRVTYPE_PREFIX ), host );
368 /* open the SLP handle */
369 SLPOpen( "en", 0, &slapd_hslp );
372 void slapd_slp_deinit() {
373 if( slapd_srvurls == NULL ) return;
375 ldap_charray_free( slapd_srvurls );
376 slapd_srvurls = NULL;
378 /* close the SLP handle */
379 SLPClose( slapd_hslp );
382 void slapd_slp_regreport(
390 void slapd_slp_reg() {
393 if( slapd_srvurls == NULL ) return;
395 for( i=0; slapd_srvurls[i] != NULL; i++ ) {
396 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
397 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
398 strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
399 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
403 SLP_LIFETIME_MAXIMUM,
413 void slapd_slp_dereg() {
416 if( slapd_srvurls == NULL ) return;
418 for( i=0; slapd_srvurls[i] != NULL; i++ ) {
419 SLPDereg( slapd_hslp,
425 #endif /* HAVE_SLP */
428 * Add a descriptor to daemon control
430 * If isactive, the descriptor is a live server session and is subject
431 * to idletimeout control. Otherwise, the descriptor is a passive
432 * listener or an outbound client session, and not subject to
433 * idletimeout. The underlying event handler may record the Listener
434 * argument to differentiate Listener's from real sessions.
436 static void slapd_add(ber_socket_t s, int isactive, Listener *sl) {
437 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
439 assert( SLAP_SOCK_NOT_ACTIVE(s) );
441 if ( isactive ) slap_daemon.sd_nactives++;
443 SLAP_ADD_SOCK(s, sl);
445 Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr\n",
448 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
450 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
457 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
460 void slapd_sd_unlock()
462 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
466 * Remove the descriptor from daemon control
478 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
480 assert( SLAP_SOCK_IS_ACTIVE( s ));
482 if ( wasactive ) slap_daemon.sd_nactives--;
484 waswriter = SLAP_SOCK_IS_WRITE(s);
485 wasreader = SLAP_SOCK_IS_READ(s);
487 Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
489 wasreader ? "r" : "",
490 waswriter ? "w" : "" );
492 if ( waswriter ) slap_daemon.sd_nwriters--;
496 /* If we ran out of file descriptors, we dropped a listener from
497 * the select() loop. Now that we're removing a session from our
498 * control, we can try to resume a dropped listener to use.
502 for ( i = 0; slap_listeners[i] != NULL; i++ ) {
503 Listener *lr = slap_listeners[i];
505 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
506 if ( lr->sl_sd == s ) continue;
513 /* Walked the entire list without enabling anything; emfile
514 * counter is stale. Reset it.
516 if ( slap_listeners[i] == NULL ) emfile = 0;
518 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
519 WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
522 void slapd_clr_write(ber_socket_t s, int wake) {
523 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
525 assert( SLAP_SOCK_IS_ACTIVE( s ));
527 if ( SLAP_SOCK_IS_WRITE( s )) {
528 SLAP_SOCK_CLR_WRITE( s );
529 slap_daemon.sd_nwriters--;
532 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
536 void slapd_set_write(ber_socket_t s, int wake) {
537 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
539 assert( SLAP_SOCK_IS_ACTIVE( s ));
541 if ( !SLAP_SOCK_IS_WRITE( s )) {
542 SLAP_SOCK_SET_WRITE( s );
543 slap_daemon.sd_nwriters++;
546 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
550 int slapd_clr_read(ber_socket_t s, int wake) {
552 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
554 if ( SLAP_SOCK_IS_ACTIVE( s )) {
555 SLAP_SOCK_CLR_READ( s );
558 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
564 void slapd_set_read(ber_socket_t s, int wake) {
565 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
567 assert( SLAP_SOCK_IS_ACTIVE( s ));
568 if (!SLAP_SOCK_IS_READ( s )) SLAP_SOCK_SET_READ( s );
570 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
574 static void slapd_close(ber_socket_t s) {
575 Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
580 static void slap_free_listener_addresses(struct sockaddr **sal) {
581 struct sockaddr **sap;
582 if (sal == NULL) return;
583 for (sap = sal; *sap != NULL; sap++) ch_free(*sap);
587 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
588 static int get_url_perms(
595 assert( exts != NULL );
596 assert( perms != NULL );
597 assert( crit != NULL );
600 for ( i = 0; exts[ i ]; i++ ) {
601 char *type = exts[ i ];
604 if ( type[ 0 ] == '!' ) {
609 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=",
610 sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 )
612 char *value = type + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
616 switch (strlen(value)) {
618 /* skip leading '0' */
619 if ( value[ 0 ] != '0' ) return LDAP_OTHER;
623 for ( j = 0; j < 3; j++) {
626 v = value[ j ] - '0';
628 if ( v < 0 || v > 7 ) return LDAP_OTHER;
635 for ( j = 1; j < 10; j++ ) {
636 static mode_t m[] = { 0,
637 S_IRUSR, S_IWUSR, S_IXUSR,
638 S_IRGRP, S_IWGRP, S_IXGRP,
639 S_IROTH, S_IWOTH, S_IXOTH
641 static char c[] = "-rwxrwxrwx";
643 if ( value[ j ] == c[ j ] ) {
646 } else if ( value[ j ] != '-' ) {
665 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
667 /* port = 0 indicates AF_LOCAL */
668 static int slap_get_listener_addresses(
671 struct sockaddr ***sal)
673 struct sockaddr **sap;
677 *sal = ch_malloc(2 * sizeof(void *));
678 if (*sal == NULL) return -1;
681 *sap = ch_malloc(sizeof(struct sockaddr_un));
682 if (*sap == NULL) goto errexit;
686 (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) )
688 Debug( LDAP_DEBUG_ANY,
689 "daemon: domain socket path (%s) too long in URL",
694 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
695 (*sap)->sa_family = AF_LOCAL;
696 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
700 #ifdef HAVE_GETADDRINFO
701 struct addrinfo hints, *res, *sai;
705 memset( &hints, '\0', sizeof(hints) );
706 hints.ai_flags = AI_PASSIVE;
707 hints.ai_socktype = SOCK_STREAM;
708 hints.ai_family = slap_inet4or6;
709 snprintf(serv, sizeof serv, "%d", port);
711 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
712 Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo() failed: %s\n",
713 AC_GAI_STRERROR(err), 0, 0);
718 for (n=2; (sai = sai->ai_next) != NULL; n++) {
721 *sal = ch_calloc(n, sizeof(void *));
722 if (*sal == NULL) return -1;
727 for ( sai=res; sai; sai=sai->ai_next ) {
728 if( sai->ai_addr == NULL ) {
729 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
730 "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
735 switch (sai->ai_family) {
736 # ifdef LDAP_PF_INET6
738 *sap = ch_malloc(sizeof(struct sockaddr_in6));
743 *(struct sockaddr_in6 *)*sap =
744 *((struct sockaddr_in6 *)sai->ai_addr);
748 *sap = ch_malloc(sizeof(struct sockaddr_in));
753 *(struct sockaddr_in *)*sap =
754 *((struct sockaddr_in *)sai->ai_addr);
762 (*sap)->sa_family = sai->ai_family;
773 struct hostent *he = NULL;
775 if ( host == NULL ) {
776 in.s_addr = htonl(INADDR_ANY);
778 } else if ( !inet_aton( host, &in ) ) {
779 he = gethostbyname( host );
781 Debug( LDAP_DEBUG_ANY,
782 "daemon: invalid host %s", host, 0, 0);
785 for (n = 0; he->h_addr_list[n]; n++) /* empty */;
788 *sal = ch_malloc((n+1) * sizeof(void *));
789 if (*sal == NULL) return -1;
792 for ( i = 0; i<n; i++ ) {
793 sap[i] = ch_malloc(sizeof(struct sockaddr_in));
794 if (*sap == NULL) goto errexit;
796 (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
797 sap[i]->sa_family = AF_INET;
798 ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
799 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr,
800 he ? he->h_addr_list[i] : &in, sizeof(struct in_addr) );
809 slap_free_listener_addresses(*sal);
813 static int slap_open_listener(
824 int err, addrlen = 0;
825 struct sockaddr **sal, **psal;
826 int socktype = SOCK_STREAM; /* default to COTS */
828 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
833 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
835 rc = ldap_url_parse( url, &lud );
837 if( rc != LDAP_URL_SUCCESS ) {
838 Debug( LDAP_DEBUG_ANY,
839 "daemon: listen URL \"%s\" parse error=%d\n",
844 l.sl_url.bv_val = NULL;
846 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
851 if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
852 Debug( LDAP_DEBUG_ANY, "daemon: TLS not supported (%s)\n",
854 ldap_free_urldesc( lud );
858 if(! lud->lud_port ) lud->lud_port = LDAP_PORT;
861 l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
863 if(! lud->lud_port ) {
864 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
868 port = (unsigned short) lud->lud_port;
870 tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
871 if ( tmp == LDAP_PROTO_IPC ) {
873 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
874 err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
876 err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
880 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
882 ldap_free_urldesc( lud );
886 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
887 || strcmp(lud->lud_host, "*") == 0 )
889 err = slap_get_listener_addresses(NULL, port, &sal);
891 err = slap_get_listener_addresses(lud->lud_host, port, &sal);
895 #ifdef LDAP_CONNECTIONLESS
896 l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
899 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
900 if ( lud->lud_exts ) {
901 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
903 l.sl_perms = S_IRWXU | S_IRWXO;
905 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
907 ldap_free_urldesc( lud );
908 if ( err ) return -1;
910 /* If we got more than one address returned, we need to make space
911 * for it in the slap_listeners array.
913 for ( num=0; sal[num]; num++ ) /* empty */;
916 slap_listeners = ch_realloc( slap_listeners,
917 (*listeners + 1) * sizeof(Listener *) );
921 while ( *sal != NULL ) {
923 switch( (*sal)->sa_family ) {
942 #ifdef LDAP_CONNECTIONLESS
943 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
946 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
947 if ( l.sl_sd == AC_SOCKET_INVALID ) {
948 int err = sock_errno();
949 Debug( LDAP_DEBUG_ANY,
950 "daemon: %s socket() failed errno=%d (%s)\n",
951 af, err, sock_errstr(err) );
957 if ( l.sl_sd >= dtblsize ) {
958 Debug( LDAP_DEBUG_ANY,
959 "daemon: listener descriptor %ld is too great %ld\n",
960 (long) l.sl_sd, (long) dtblsize, 0 );
961 tcp_close( l.sl_sd );
968 if ( (*sal)->sa_family == AF_LOCAL ) {
969 unlink( ((struct sockaddr_un *)*sal)->sun_path );
974 /* enable address reuse */
976 rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
977 (char *) &tmp, sizeof(tmp) );
978 if ( rc == AC_SOCKET_ERROR ) {
979 int err = sock_errno();
980 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
981 "setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
982 (long) l.sl_sd, err, sock_errstr(err) );
987 switch( (*sal)->sa_family ) {
989 addrlen = sizeof(struct sockaddr_in);
994 /* Try to use IPv6 sockets for IPv6 only */
996 rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
997 (char *) &tmp, sizeof(tmp) );
998 if ( rc == AC_SOCKET_ERROR ) {
999 int err = sock_errno();
1000 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1001 "setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
1002 (long) l.sl_sd, err, sock_errstr(err) );
1005 addrlen = sizeof(struct sockaddr_in6);
1009 #ifdef LDAP_PF_LOCAL
1014 setsockopt(l.sl_sd, 0, LOCAL_CREDS, &one, sizeof one);
1017 addrlen = sizeof(struct sockaddr_un);
1022 if (bind(l.sl_sd, *sal, addrlen)) {
1024 Debug( LDAP_DEBUG_ANY,
1025 "daemon: bind(%ld) failed errno=%d (%s)\n",
1026 (long) l.sl_sd, err, sock_errstr(err) );
1027 tcp_close( l.sl_sd );
1032 switch ( (*sal)->sa_family ) {
1033 #ifdef LDAP_PF_LOCAL
1035 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
1036 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
1037 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
1038 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
1041 #endif /* LDAP_PF_LOCAL */
1045 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1046 char addr[INET_ADDRSTRLEN];
1047 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
1048 addr, sizeof(addr) );
1051 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
1053 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
1055 ber_memalloc( sizeof("IP=255.255.255.255:65535") );
1056 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
1058 s != NULL ? s : SLAP_STRING_UNKNOWN, port );
1059 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1062 #ifdef LDAP_PF_INET6
1064 char addr[INET6_ADDRSTRLEN];
1065 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
1067 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
1068 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
1069 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
1070 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
1072 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1074 #endif /* LDAP_PF_INET6 */
1077 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
1078 (int) (*sal)->sa_family, 0, 0 );
1082 AC_MEMCPY(&l.sl_sa, *sal, addrlen);
1083 ber_str2bv( url, 0, 1, &l.sl_url);
1084 li = ch_malloc( sizeof( Listener ) );
1086 slap_listeners[*cur] = li;
1091 slap_free_listener_addresses(psal);
1093 if ( l.sl_url.bv_val == NULL ) {
1094 Debug( LDAP_DEBUG_TRACE,
1095 "slap_open_listener: failed on %s\n", url, 0, 0 );
1099 #ifdef LDAP_CONNECTIONLESS
1101 long id = connection_init( l.sl_sd, &l, "", "", CONN_IS_UDP,
1102 (slap_ssf_t) 0, NULL );
1105 Debug( LDAP_DEBUG_TRACE,
1106 "slap_open_listener: connectionless init failed on %s (%d)\n",
1114 Debug( LDAP_DEBUG_TRACE, "daemon: listener initialized %s\n",
1115 l.sl_url.bv_val, 0, 0 );
1119 static int sockinit(void);
1120 static int sockdestroy(void);
1122 int slapd_daemon_init( const char *urls )
1127 Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
1128 urls ? urls : "<null>", 0, 0 );
1129 if( (rc = sockinit()) != 0 ) return rc;
1132 dtblsize = sysconf( _SC_OPEN_MAX );
1133 #elif HAVE_GETDTABLESIZE
1134 dtblsize = getdtablesize();
1136 dtblsize = FD_SETSIZE;
1139 /* open a pipe (or something equivalent connected to itself).
1140 * we write a byte on this fd whenever we catch a signal. The main
1141 * loop will be select'ing on this socket, and will wake up when
1142 * this byte arrives.
1144 if( (rc = lutil_pair( wake_sds )) < 0 ) {
1145 Debug( LDAP_DEBUG_ANY,
1146 "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
1152 if( urls == NULL ) urls = "ldap:///";
1154 u = ldap_str2charray( urls, " " );
1156 if( u == NULL || u[0] == NULL ) {
1157 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1162 for( i=0; u[i] != NULL; i++ ) {
1163 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1168 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1170 ldap_charray_free( u );
1174 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1176 slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1178 for(n = 0, j = 0; u[n]; n++ ) {
1179 if ( slap_open_listener( u[n], &i, &j ) ) {
1180 ldap_charray_free( u );
1184 slap_listeners[j] = NULL;
1186 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1191 if( slapd_register_slp ) {
1192 slapd_slp_init( urls );
1197 ldap_charray_free( u );
1198 ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1205 slapd_daemon_destroy(void)
1207 connections_destroy();
1208 tcp_close( wake_sds[1] );
1209 tcp_close( wake_sds[0] );
1213 if( slapd_register_slp ) {
1229 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1230 Listener *lr = slap_listeners[l];
1232 if ( lr->sl_sd != AC_SOCKET_INVALID ) {
1233 if ( remove ) slapd_remove( lr->sl_sd, 0, 0, 0 );
1235 #ifdef LDAP_PF_LOCAL
1236 if ( lr->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1237 unlink( lr->sl_sa.sa_un_addr.sun_path );
1239 #endif /* LDAP_PF_LOCAL */
1241 slapd_close( lr->sl_sd );
1244 if ( lr->sl_url.bv_val ) {
1245 ber_memfree( lr->sl_url.bv_val );
1248 if ( lr->sl_name.bv_val ) {
1249 ber_memfree( lr->sl_name.bv_val );
1253 slap_listeners[l] = NULL;
1264 socklen_t len = sizeof(from);
1267 struct berval authid = BER_BVNULL;
1268 #ifdef SLAPD_RLOOKUPS
1269 char hbuf[NI_MAXHOST];
1272 char *dnsname = NULL;
1273 char *peeraddr = NULL;
1274 #ifdef LDAP_PF_LOCAL
1275 char peername[MAXPATHLEN + sizeof("PATH=")];
1276 #elif defined(LDAP_PF_INET6)
1277 char peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1279 char peername[sizeof("IP=255.255.255.255:65336")];
1280 #endif /* LDAP_PF_LOCAL */
1284 #ifdef LDAP_CONNECTIONLESS
1285 if ( sl->sl_is_udp ) return 1;
1288 # ifdef LDAP_PF_LOCAL
1289 /* FIXME: apparently accept doesn't fill
1290 * the sun_path sun_path member */
1291 from.sa_un_addr.sun_path[0] = '\0';
1292 # endif /* LDAP_PF_LOCAL */
1294 s = accept( sl->sl_sd, (struct sockaddr *) &from, &len );
1296 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1297 /* Resume the listener FD to allow concurrent-processing of
1298 * additional incoming connections.
1304 if ( s == AC_SOCKET_INVALID ) {
1305 int err = sock_errno();
1316 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1318 /* Stop listening until an existing session closes */
1320 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1323 Debug( LDAP_DEBUG_ANY,
1324 "daemon: accept(%ld) failed errno=%d (%s)\n",
1325 (long) sl->sl_sd, err, sock_errstr(err) );
1326 ldap_pvt_thread_yield();
1330 #ifndef HAVE_WINSOCK
1331 /* make sure descriptor number isn't too great */
1332 if ( s >= dtblsize ) {
1333 Debug( LDAP_DEBUG_ANY,
1334 "daemon: %ld beyond descriptor table size %ld\n",
1335 (long) s, (long) dtblsize, 0 );
1338 ldap_pvt_thread_yield();
1344 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1345 /* newly accepted stream should not be in any of the FD SETS */
1346 assert( SLAP_SOCK_NOT_ACTIVE( s ));
1347 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1350 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1351 #ifdef LDAP_PF_LOCAL
1352 /* for IPv4 and IPv6 sockets only */
1353 if ( from.sa_addr.sa_family != AF_LOCAL )
1354 #endif /* LDAP_PF_LOCAL */
1359 /* enable keep alives */
1361 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1362 (char *) &tmp, sizeof(tmp) );
1363 if ( rc == AC_SOCKET_ERROR ) {
1364 int err = sock_errno();
1365 Debug( LDAP_DEBUG_ANY,
1366 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1367 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1371 /* enable no delay */
1373 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1374 (char *)&tmp, sizeof(tmp) );
1375 if ( rc == AC_SOCKET_ERROR ) {
1376 int err = sock_errno();
1377 Debug( LDAP_DEBUG_ANY,
1378 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1379 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1385 Debug( LDAP_DEBUG_CONNS,
1386 "daemon: listen=%ld, new connection on %ld\n",
1387 (long) sl->sl_sd, (long) s, 0 );
1389 switch ( from.sa_addr.sa_family ) {
1390 # ifdef LDAP_PF_LOCAL
1392 /* FIXME: apparently accept doesn't fill
1393 * the sun_path sun_path member */
1394 if ( from.sa_un_addr.sun_path[0] == '\0' ) {
1395 AC_MEMCPY( from.sa_un_addr.sun_path,
1396 sl->sl_sa.sa_un_addr.sun_path,
1397 sizeof( from.sa_un_addr.sun_path ) );
1400 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1406 if( getpeereid( s, &uid, &gid ) == 0 ) {
1407 authid.bv_val = ch_malloc(
1408 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1409 "cn=peercred,cn=external,cn=auth" ) + 1 );
1410 authid.bv_len = sprintf( authid.bv_val,
1411 "gidNumber=%d+uidNumber=%d,"
1412 "cn=peercred,cn=external,cn=auth",
1413 (int) gid, (int) uid );
1414 assert( authid.bv_len <=
1415 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1416 "cn=peercred,cn=external,cn=auth" ) );
1421 #endif /* LDAP_PF_LOCAL */
1423 # ifdef LDAP_PF_INET6
1425 if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1426 peeraddr = inet_ntoa( *((struct in_addr *)
1427 &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1428 sprintf( peername, "IP=%s:%d",
1429 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1430 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1432 char addr[INET6_ADDRSTRLEN];
1434 peeraddr = (char *) inet_ntop( AF_INET6,
1435 &from.sa_in6_addr.sin6_addr,
1436 addr, sizeof addr );
1437 sprintf( peername, "IP=%s %d",
1438 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1439 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1442 # endif /* LDAP_PF_INET6 */
1445 peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1446 sprintf( peername, "IP=%s:%d",
1447 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1448 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1456 if ( ( from.sa_addr.sa_family == AF_INET )
1457 #ifdef LDAP_PF_INET6
1458 || ( from.sa_addr.sa_family == AF_INET6 )
1463 #ifdef SLAPD_RLOOKUPS
1464 if ( use_reverse_lookup ) {
1466 if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
1467 sizeof(hbuf), &herr ) == 0) {
1468 ldap_pvt_str2lower( hbuf );
1472 #endif /* SLAPD_RLOOKUPS */
1475 if ( !hosts_ctl("slapd",
1476 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1477 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1478 SLAP_STRING_UNKNOWN ))
1481 Statslog( LDAP_DEBUG_STATS,
1482 "fd=%ld DENIED from %s (%s)\n",
1484 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1485 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1490 #endif /* HAVE_TCPD */
1493 id = connection_init(s, sl,
1494 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1497 sl->sl_is_tls ? CONN_IS_TLS : 0,
1502 authid.bv_val ? &authid : NULL );
1504 if( authid.bv_val ) ch_free(authid.bv_val);
1507 Debug( LDAP_DEBUG_ANY,
1508 "daemon: connection_init(%ld, %s, %s) failed.\n",
1509 (long) s, peername, sl->sl_name.bv_val );
1514 Statslog( LDAP_DEBUG_STATS,
1515 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1516 id, (long) s, peername, sl->sl_name.bv_val,
1522 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1524 slap_listener_thread(
1530 rc = slap_listener( (Listener*)ptr );
1532 if( rc != LDAP_SUCCESS ) {
1533 Debug( LDAP_DEBUG_ANY,
1534 "listener_thread: failed %d", rc, 0, 0 );
1541 slap_listener_activate(
1546 Debug( LDAP_DEBUG_TRACE, "slap_listener_activate(%d): %s\n",
1547 sl->sl_sd, sl->sl_busy ? "busy" : "", 0 );
1551 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1552 slap_listener_thread, (void *) sl );
1555 Debug( LDAP_DEBUG_ANY,
1556 "listener_activate(%d): submit failed (%d)\n",
1568 time_t last_idle_check = 0;
1569 struct timeval idle;
1572 #define SLAPD_IDLE_CHECK_LIMIT 4
1574 if ( global_idletimeout > 0 ) {
1575 last_idle_check = slap_get_time();
1576 /* Set the select timeout.
1577 * Don't just truncate, preserve the fractions of
1578 * seconds to prevent sleeping for zero time.
1580 idle.tv_sec = global_idletimeout / SLAPD_IDLE_CHECK_LIMIT;
1581 idle.tv_usec = global_idletimeout - \
1582 ( idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT );
1583 idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
1589 slapd_add( wake_sds[0], 0, NULL );
1591 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1592 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
1594 #ifdef LDAP_CONNECTIONLESS
1595 /* Since this is connectionless, the data port is the
1596 * listening port. The listen() and accept() calls
1599 if ( slap_listeners[l]->sl_is_udp ) {
1600 slapd_add( slap_listeners[l]->sl_sd, 1, slap_listeners[l] );
1605 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN_BACKLOG ) == -1 ) {
1606 int err = sock_errno();
1608 #ifdef LDAP_PF_INET6
1609 /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1610 * we are already listening to in6addr_any, then we want to ignore
1611 * this and continue.
1613 if ( err == EADDRINUSE ) {
1615 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1616 struct sockaddr_in6 sa6;
1618 if ( sa.sin_family == AF_INET &&
1619 sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1620 for ( i = 0 ; i < l; i++ ) {
1621 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1622 if ( sa6.sin6_family == AF_INET6 &&
1623 !memcmp( &sa6.sin6_addr, &in6addr_any,
1624 sizeof(struct in6_addr) ) )
1631 /* We are already listening to in6addr_any */
1632 Debug( LDAP_DEBUG_CONNS,
1633 "daemon: Attempt to listen to 0.0.0.0 failed, "
1634 "already listening on ::, assuming IPv4 included\n",
1636 slapd_close( slap_listeners[l]->sl_sd );
1637 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1643 Debug( LDAP_DEBUG_ANY,
1644 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1645 slap_listeners[l]->sl_url.bv_val, err,
1650 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1651 /* make the listening socket non-blocking */
1652 if ( ber_pvt_socket_set_nonblock( slap_listeners[l]->sl_sd, 1 ) < 0 ) {
1653 Debug( LDAP_DEBUG_ANY, "slapd_daemon_task: "
1654 "set nonblocking on a listening socket failed\n",
1661 slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l] );
1664 #ifdef HAVE_NT_SERVICE_MANAGER
1665 if ( started_event != NULL ) }
1666 ldap_pvt_thread_cond_signal( &started_event );
1670 #ifdef SLAP_SEM_LOAD_CONTROL
1672 * initialize count and lazyness of a semaphore
1674 (void) ldap_lazy_sem_init(
1675 SLAP_MAX_WORKER_THREADS + 4 /* max workers + margin */,
1679 /* initialization complete. Here comes the loop. */
1681 while ( !slapd_shutdown ) {
1686 #if SLAP_EVENTS_ARE_INDEXED
1687 ber_socket_t nrfds, nwfds;
1689 #define SLAPD_EBADF_LIMIT 16
1696 struct timeval *tvp;
1698 struct timeval *cat;
1701 now = slap_get_time();
1703 if( ( global_idletimeout > 0 ) &&
1704 difftime( last_idle_check +
1705 global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1706 connections_timeout_idle( now );
1707 last_idle_check = now;
1712 if( slapd_gentle_shutdown ) {
1713 ber_socket_t active;
1715 if( slapd_gentle_shutdown == 1 ) {
1716 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1717 close_listeners( 1 );
1718 frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
1719 slapd_gentle_shutdown = 2;
1722 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1723 active = slap_daemon.sd_nactives;
1724 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1733 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1735 nwriters = slap_daemon.sd_nwriters;
1737 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1738 Listener *lr = slap_listeners[l];
1740 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
1742 if ( lr->sl_mute || lr->sl_busy ) {
1743 SLAP_SOCK_CLR_READ( lr->sl_sd );
1745 SLAP_SOCK_SET_READ( lr->sl_sd );
1751 nfds = SLAP_EVENT_MAX;
1753 if ( global_idletimeout && slap_daemon.sd_nactives ) at = 1;
1755 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1758 #if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
1759 && ( tv.tv_sec || tv.tv_usec )
1768 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1769 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
1770 while ( cat && cat->tv_sec && cat->tv_sec <= now ) {
1771 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
1772 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1774 ldap_pvt_runqueue_runtask( &slapd_rq, rtask );
1775 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1776 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1777 ldap_pvt_thread_pool_submit( &connection_pool,
1778 rtask->routine, (void *) rtask );
1779 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1781 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
1783 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1785 if ( cat && cat->tv_sec ) {
1786 time_t diff = difftime( cat->tv_sec, now );
1787 if ( diff == 0 ) diff = tdelta;
1788 if ( tvp == NULL || diff < tv.tv_sec ) {
1795 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1796 Listener *lr = slap_listeners[l];
1798 if ( lr->sl_sd == AC_SOCKET_INVALID ) {
1802 if ( lr->sl_mute ) {
1803 Debug( LDAP_DEBUG_CONNS,
1804 "daemon: select: listen=%d muted\n",
1809 if ( lr->sl_busy ) {
1810 Debug( LDAP_DEBUG_CONNS,
1811 "daemon: select: listen=%d busy\n",
1816 Debug( LDAP_DEBUG_CONNS,
1817 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1818 lr->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
1821 switch(ns = SLAP_EVENT_WAIT(tvp)) {
1822 case -1: { /* failure - try again */
1823 int err = sock_errno();
1827 /* you'd think this would be EBADF */
1828 || err == WSAENOTSOCK
1831 if (++ebadf < SLAPD_EBADF_LIMIT)
1835 if( err != EINTR ) {
1836 Debug( LDAP_DEBUG_CONNS,
1837 "daemon: select failed (%d): %s\n",
1838 err, sock_errstr(err), 0 );
1844 case 0: /* timeout - let threads run */
1846 #ifndef HAVE_YIELDING_SELECT
1847 Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1850 ldap_pvt_thread_yield();
1854 default: /* something happened - deal with it */
1855 if( slapd_shutdown ) continue;
1858 Debug( LDAP_DEBUG_CONNS,
1859 "daemon: activity on %d descriptor%s\n",
1860 ns, ns != 1 ? "s" : "", 0 );
1864 #if SLAP_EVENTS_ARE_INDEXED
1865 if ( SLAP_EVENT_IS_READ( wake_sds[0] )) {
1866 SLAP_EVENT_CLR_READ( wake_sds[0] );
1870 tcp_read( wake_sds[0], c, sizeof(c) );
1872 Debug( LDAP_DEBUG_CONNS, "daemon: waked\n", 0, 0, 0 );
1877 /* The event slot equals the descriptor number - this is
1878 * true for Unix select and poll. We treat Windows select
1879 * like this too, even though it's a kludge.
1881 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1884 if ( ns <= 0 ) break;
1885 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
1886 #ifdef LDAP_CONNECTIONLESS
1887 if ( slap_listeners[l]->sl_is_udp ) continue;
1889 if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd )) continue;
1892 SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
1893 SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
1896 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1897 rc = slap_listener_activate(slap_listeners[l]);
1899 rc = slap_listener(slap_listeners[l]);
1903 /* bypass the following tests if no descriptors left */
1905 #ifndef HAVE_YIELDING_SELECT
1906 ldap_pvt_thread_yield();
1911 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1913 nrfds = readfds.fd_count;
1914 nwfds = writefds.fd_count;
1915 for ( i = 0; i < readfds.fd_count; i++ ) {
1916 Debug( LDAP_DEBUG_CONNS, " %d%s",
1917 readfds.fd_array[i], "r", 0 );
1919 for ( i = 0; i < writefds.fd_count; i++ ) {
1920 Debug( LDAP_DEBUG_CONNS, " %d%s",
1921 writefds.fd_array[i], "w", 0 );
1927 for ( i = 0; i < nfds; i++ ) {
1930 r = SLAP_EVENT_IS_READ( i );
1931 /* writefds was not initialized if nwriters was zero */
1932 w = nwriters ? SLAP_EVENT_IS_WRITE( i ) : 0;
1934 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1935 r ? "r" : "", w ? "w" : "" );
1945 if ( ns <= 0 ) break;
1948 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1951 /* loop through the writers */
1952 for ( i = 0; nwfds > 0; i++ ) {
1955 wd = writefds.fd_array[i];
1957 if( ! SLAP_EVENT_IS_WRITE( i ) ) continue;
1961 SLAP_EVENT_CLR_WRITE( wd );
1964 Debug( LDAP_DEBUG_CONNS,
1965 "daemon: write active on %d\n",
1968 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1969 connection_write_activate( wd );
1972 * NOTE: it is possible that the connection was closed
1973 * and that the stream is now inactive.
1974 * connection_write() must validate the stream is still
1977 if ( connection_write( wd ) < 0 ) {
1978 if ( SLAP_EVENT_IS_READ( wd )) {
1979 SLAP_EVENT_CLR_READ( (unsigned) wd );
1987 for ( i = 0; nrfds > 0; i++ ) {
1990 rd = readfds.fd_array[i];
1992 if( ! SLAP_EVENT_IS_READ( i ) ) continue;
1995 SLAP_EVENT_CLR_READ( rd );
1998 Debug ( LDAP_DEBUG_CONNS,
1999 "daemon: read activity on %d\n", rd, 0, 0 );
2001 * NOTE: it is possible that the connection was closed
2002 * and that the stream is now inactive.
2003 * connection_read() must valid the stream is still
2007 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2008 connection_read_activate( rd );
2010 if ( connection_read( rd ) < 0 ) {
2015 #else /* !SLAP_EVENTS_ARE_INDEXED */
2017 /* The events are returned in an arbitrary list. This is true
2018 * for /dev/poll, epoll and kqueue. In order to prioritize things
2019 * so that we can handle wake_sds first, listeners second, and then
2020 * all other connections last (as we do for select), we would need
2021 * to use multiple event handles and cascade them.
2023 * That seems like a bit of hassle. So the wake_sds check has been
2024 * skipped. For epoll and kqueue we can associate arbitrary data with
2025 * an event, so we could use pointers to the listener structure
2026 * instead of just the file descriptor. For /dev/poll we have to
2027 * search the listeners array for a matching descriptor.
2029 /* if waking is set and we woke up, we'll read whatever
2034 tcp_read( wake_sds[0], c, sizeof(c) );
2041 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
2043 for (i=0; i<ns; i++) {
2046 /* Don't log listener events */
2047 if ( SLAP_EVENT_IS_LISTENER(i)
2048 #ifdef LDAP_CONNECTIONLESS
2049 && !((SLAP_EVENT_LISTENER(i))->sl_is_udp)
2056 /* Don't log internal wake events */
2057 if ( SLAP_EVENT_FD( i ) == wake_sds[0] ) continue;
2059 r = SLAP_EVENT_IS_READ( i );
2060 w = SLAP_EVENT_IS_WRITE( i );
2062 Debug( LDAP_DEBUG_CONNS, " %d%s%s", SLAP_EVENT_FD(i),
2063 r ? "r" : "", w ? "w" : "" );
2066 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2069 for (i=0; i<ns; i++) {
2072 if ( SLAP_EVENT_IS_LISTENER(i) ) {
2073 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2074 rc = slap_listener_activate( SLAP_EVENT_LISTENER( i ));
2076 rc = slap_listener( SLAP_EVENT_LISTENER( i ));
2080 /* If we found a regular listener, rc is now zero, and we
2081 * can skip the data portion. But if it was a UDP listener
2082 * then rc is still 1, and we want to handle the data.
2085 fd = SLAP_EVENT_FD( i );
2087 /* Ignore wake events, they were handled above */
2088 if ( fd == wake_sds[0] ) continue;
2090 if( SLAP_EVENT_IS_WRITE( i ) ) {
2091 Debug( LDAP_DEBUG_CONNS,
2092 "daemon: write active on %d\n",
2095 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2096 connection_write_activate( fd );
2099 * NOTE: it is possible that the connection was closed
2100 * and that the stream is now inactive.
2101 * connection_write() must valid the stream is still
2104 if ( connection_write( fd ) < 0 ) {
2110 if( SLAP_EVENT_IS_READ( i ) ) {
2111 Debug( LDAP_DEBUG_CONNS,
2112 "daemon: read active on %d\n",
2115 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2116 connection_read_activate( fd );
2119 * NOTE: it is possible that the connection was closed
2120 * and that the stream is now inactive.
2121 * connection_read() must valid the stream is still
2124 if ( connection_read( fd ) < 0 ) slapd_close( fd );
2129 #endif /* SLAP_EVENTS_ARE_INDEXED */
2131 #ifndef HAVE_YIELDING_SELECT
2132 ldap_pvt_thread_yield();
2136 if( slapd_shutdown == 1 ) {
2137 Debug( LDAP_DEBUG_ANY,
2138 "daemon: shutdown requested and initiated.\n",
2141 } else if ( slapd_shutdown == 2 ) {
2142 #ifdef HAVE_NT_SERVICE_MANAGER
2143 Debug( LDAP_DEBUG_ANY,
2144 "daemon: shutdown initiated by Service Manager.\n",
2146 #else /* !HAVE_NT_SERVICE_MANAGER */
2147 Debug( LDAP_DEBUG_ANY,
2148 "daemon: abnormal condition, shutdown initiated.\n",
2150 #endif /* !HAVE_NT_SERVICE_MANAGER */
2152 Debug( LDAP_DEBUG_ANY,
2153 "daemon: no active streams, shutdown initiated.\n",
2157 if( slapd_gentle_shutdown != 2 ) close_listeners ( 0 );
2159 if( !slapd_gentle_shutdown ) {
2160 slapd_abrupt_shutdown = 1;
2161 connections_shutdown();
2164 Debug( LDAP_DEBUG_ANY,
2165 "slapd shutdown: waiting for %d threads to terminate\n",
2166 ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
2167 ldap_pvt_thread_pool_destroy(&connection_pool, 1);
2169 free ( slap_listeners );
2170 slap_listeners = NULL;
2176 int slapd_daemon( void )
2182 #define SLAPD_LISTENER_THREAD 1
2183 #if defined( SLAPD_LISTENER_THREAD )
2185 ldap_pvt_thread_t listener_tid;
2187 /* listener as a separate THREAD */
2188 rc = ldap_pvt_thread_create( &listener_tid,
2189 0, slapd_daemon_task, NULL );
2192 Debug( LDAP_DEBUG_ANY,
2193 "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2197 /* wait for the listener thread to complete */
2198 ldap_pvt_thread_join( listener_tid, (void *) NULL );
2201 /* experimental code */
2202 slapd_daemon_task( NULL );
2209 static int sockinit(void)
2211 #if defined( HAVE_WINSOCK2 )
2212 WORD wVersionRequested;
2216 wVersionRequested = MAKEWORD( 2, 0 );
2218 err = WSAStartup( wVersionRequested, &wsaData );
2220 /* Tell the user that we couldn't find a usable */
2225 /* Confirm that the WinSock DLL supports 2.0.*/
2226 /* Note that if the DLL supports versions greater */
2227 /* than 2.0 in addition to 2.0, it will still return */
2228 /* 2.0 in wVersion since that is the version we */
2231 if ( LOBYTE( wsaData.wVersion ) != 2 ||
2232 HIBYTE( wsaData.wVersion ) != 0 )
2234 /* Tell the user that we couldn't find a usable */
2240 /* The WinSock DLL is acceptable. Proceed. */
2241 #elif defined( HAVE_WINSOCK )
2243 if ( WSAStartup( 0x0101, &wsaData ) != 0 ) return -1;
2249 static int sockdestroy(void)
2251 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2258 slap_sig_shutdown( int sig )
2261 Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2265 * If the NT Service Manager is controlling the server, we don't
2266 * want SIGBREAK to kill the server. For some strange reason,
2267 * SIGBREAK is generated when a user logs out.
2270 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2271 if (is_NT_Service && sig == SIGBREAK) {
2276 if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0) {
2277 slapd_gentle_shutdown = 1;
2286 /* reinstall self */
2287 (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2291 slap_sig_wake( int sig )
2295 /* reinstall self */
2296 (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2300 void slapd_add_internal(ber_socket_t s, int isactive) {
2301 slapd_add(s, isactive, NULL);
2304 Listener ** slapd_get_listeners(void) {
2305 return slap_listeners;
2308 void slap_wake_listener() {