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];
84 static volatile int waking;
85 #define WAKE_LISTENER(w) do { \
86 if ((w) && ++waking < 5) { \
87 tcp_write( wake_sds[1], "0", 1 ); \
91 volatile sig_atomic_t slapd_shutdown = 0;
92 volatile sig_atomic_t slapd_gentle_shutdown = 0;
93 volatile sig_atomic_t slapd_abrupt_shutdown = 0;
95 static struct slap_daemon {
96 ldap_pvt_thread_mutex_t sd_mutex;
98 ldap_pvt_thread_mutex_t tcpd_mutex;
101 ber_socket_t sd_nactives;
105 struct epoll_event *sd_epolls;
112 /* In winsock, accept() returns values higher than dtblsize
113 so don't bother with this optimization */
123 # define SLAP_EVENTS_ARE_INDEXED 0
124 # define SLAP_SOCK_IX(s) (slap_daemon.sd_index[(s)])
125 # define SLAP_SOCK_EP(s) (slap_daemon.sd_epolls[SLAP_SOCK_IX(s)])
126 # define SLAP_SOCK_EV(s) (SLAP_SOCK_EP(s).events)
127 # define SLAP_SOCK_IS_ACTIVE(s) (SLAP_SOCK_IX(s) != -1)
128 # define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_SOCK_IX(s) == -1)
129 # define SLAP_SOCK_IS_SET(s, mode) (SLAP_SOCK_EV(s) & (mode))
131 # define SLAP_SOCK_IS_READ(s) SLAP_SOCK_IS_SET((s), EPOLLIN)
132 # define SLAP_SOCK_IS_WRITE(s) SLAP_SOCK_IS_SET((s), EPOLLOUT)
134 # define SLAP_SET_SOCK(s, mode) do { \
135 if ((SLAP_SOCK_EV(s) & (mode)) != (mode)) { \
136 SLAP_SOCK_EV(s) |= (mode); \
137 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, (s), \
142 # define SLAP_CLR_SOCK(s, mode) do { \
143 if ((SLAP_SOCK_EV(s) & (mode))) { \
144 SLAP_SOCK_EV(s) &= ~(mode); \
145 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, s, \
150 # define SLAP_SOCK_SET_READ(s) SLAP_SET_SOCK(s, EPOLLIN)
151 # define SLAP_SOCK_SET_WRITE(s) SLAP_SET_SOCK(s, EPOLLOUT)
153 # ifdef SLAP_LIGHTWEIGHT_DISPATCHER
154 # define SLAP_SOCK_SET_SUSPEND(s) \
155 ( slap_daemon.sd_suspend[SLAP_SOCK_IX(s)] = 1 )
156 # define SLAP_SOCK_CLR_SUSPEND(s) \
157 ( slap_daemon.sd_suspend[SLAP_SOCK_IX(s)] = 0 )
158 # define SLAP_SOCK_IS_SUSPEND(s) \
159 ( slap_daemon.sd_suspend[SLAP_SOCK_IX(s)] == 1 )
162 # define SLAP_SOCK_CLR_READ(s) SLAP_CLR_SOCK((s), EPOLLIN)
163 # define SLAP_SOCK_CLR_WRITE(s) SLAP_CLR_SOCK((s), EPOLLOUT)
165 # define SLAP_CLR_EVENT(i, mode) (revents[(i)].events &= ~(mode))
167 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
169 /* If a Listener address is provided, store that as the epoll data.
170 * Otherwise, store the address of this socket's slot in the
171 * index array. If we can't do this add, the system is out of
172 * resources and we need to shutdown.
174 # define SLAP_ADD_SOCK(s, l) do { \
176 SLAP_SOCK_IX((s)) = slap_daemon.sd_nfds; \
177 SLAP_SOCK_EP((s)).data.ptr = (l) ? (l) : (void *)(&SLAP_SOCK_IX(s)); \
178 SLAP_SOCK_EV((s)) = EPOLLIN; \
179 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_ADD, \
180 (s), &SLAP_SOCK_EP((s))); \
182 slap_daemon.sd_nfds++; \
184 Debug( LDAP_DEBUG_ANY, \
185 "daemon: epoll_ctl(ADD,fd=%d) failed, errno=%d, shutting down\n", \
187 slapd_shutdown = 2; \
191 # define SLAP_EV_LISTENER(ptr) (((int *)(ptr) >= slap_daemon.sd_index && \
192 (int *)(ptr) <= (slap_daemon.sd_index+dtblsize)) ? 0 : 1 )
194 # define SLAP_EV_PTRFD(ptr) (SLAP_EV_LISTENER(ptr) ? \
195 ((Listener *)ptr)->sl_sd : (int *)(ptr) - slap_daemon.sd_index)
197 # define SLAP_DEL_SOCK(s) do { \
198 int fd, rc, index = SLAP_SOCK_IX((s)); \
199 if ( index < 0 ) break; \
200 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_DEL, \
201 (s), &SLAP_SOCK_EP((s))); \
202 slap_daemon.sd_epolls[index] = \
203 slap_daemon.sd_epolls[slap_daemon.sd_nfds-1]; \
204 fd = SLAP_EV_PTRFD(slap_daemon.sd_epolls[index].data.ptr); \
205 slap_daemon.sd_index[fd] = index; \
206 slap_daemon.sd_index[(s)] = -1; \
207 slap_daemon.sd_nfds--; \
210 # define SLAP_EVENT_CLR_READ(i) SLAP_CLR_EVENT((i), EPOLLIN)
211 # define SLAP_EVENT_CLR_WRITE(i) SLAP_CLR_EVENT((i), EPOLLOUT)
213 # define SLAP_CHK_EVENT(i, mode) (revents[(i)].events & mode)
215 # define SLAP_EVENT_IS_READ(i) SLAP_CHK_EVENT((i), EPOLLIN)
216 # define SLAP_EVENT_IS_WRITE(i) SLAP_CHK_EVENT((i), EPOLLOUT)
217 # define SLAP_EVENT_IS_LISTENER(i) SLAP_EV_LISTENER(revents[(i)].data.ptr)
218 # define SLAP_EVENT_LISTENER(i) (revents[(i)].data.ptr)
220 # define SLAP_EVENT_FD(i) SLAP_EV_PTRFD(revents[(i)].data.ptr)
222 # define SLAP_SOCK_SET_INIT do { \
223 slap_daemon.sd_epolls = ch_calloc(1, \
224 sizeof(struct epoll_event) * dtblsize * 2); \
225 slap_daemon.sd_index = ch_malloc(sizeof(int) * dtblsize); \
226 slap_daemon.sd_epfd = epoll_create( dtblsize ); \
227 for (i=0; i<dtblsize; i++) slap_daemon.sd_index[i] = -1; \
230 # define SLAP_EVENT_DECL struct epoll_event *revents
232 # define SLAP_EVENT_INIT do { \
233 revents = slap_daemon.sd_epolls + dtblsize; \
236 # define SLAP_EVENT_WAIT(tvp) \
237 epoll_wait( slap_daemon.sd_epfd, revents, \
238 dtblsize, (tvp) ? (tvp)->tv_sec * 1000 : -1 )
243 # define SLAP_EVENTS_ARE_INDEXED 1
244 # define SLAP_EVENT_DECL \
245 fd_set readfds, writefds
247 # define SLAP_EVENT_INIT do { \
248 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) ); \
250 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) ); \
252 FD_ZERO( &writefds ); \
257 # define CHK_SETSIZE do { \
258 if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE; \
261 # define CHK_SETSIZE do { ; } while (0)
264 # define SLAP_SOCK_SET_INIT do { \
266 FD_ZERO(&slap_daemon.sd_readers); \
267 FD_ZERO(&slap_daemon.sd_writers); \
270 # define SLAP_SOCK_IS_ACTIVE(fd) FD_ISSET((fd), &slap_daemon.sd_actives)
271 # define SLAP_SOCK_IS_READ(fd) FD_ISSET((fd), &slap_daemon.sd_readers)
272 # define SLAP_SOCK_IS_WRITE(fd) FD_ISSET((fd), &slap_daemon.sd_writers)
274 # define SLAP_SOCK_NOT_ACTIVE(fd) (!SLAP_SOCK_IS_ACTIVE(fd) && \
275 !SLAP_SOCK_IS_READ(fd) && !SLAP_SOCK_IS_WRITE(fd))
278 # define SLAP_SOCK_SET_READ(fd) do { \
279 if (!SLAP_SOCK_IS_READ(fd)) { FD_SET((fd), &slap_daemon.sd_readers); } \
281 # define SLAP_SOCK_SET_WRITE(fd) do { \
282 if (!SLAP_SOCK_IS_WRITE(fd)) { FD_SET((fd), &slap_daemon.sd_writers); } \
285 # define SLAP_ADDTEST(s)
286 # define SLAP_EVENT_MAX dtblsize
288 # define SLAP_SOCK_SET_READ(fd) FD_SET((fd), &slap_daemon.sd_readers)
289 # define SLAP_SOCK_SET_WRITE(fd) FD_SET((fd), &slap_daemon.sd_writers)
291 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
292 # define SLAP_ADDTEST(s) do { \
293 if ((s) >= slap_daemon.sd_nfds) slap_daemon.sd_nfds = (s)+1; \
297 # define SLAP_SOCK_CLR_READ(fd) FD_CLR((fd), &slap_daemon.sd_readers)
298 # define SLAP_SOCK_CLR_WRITE(fd) FD_CLR((fd), &slap_daemon.sd_writers)
300 # define SLAP_ADD_SOCK(s, l) do { \
302 FD_SET((s), &slap_daemon.sd_actives); \
303 FD_SET((s), &slap_daemon.sd_readers); \
306 # define SLAP_DEL_SOCK(s) do { \
307 FD_CLR((s), &slap_daemon.sd_actives); \
308 FD_CLR((s), &slap_daemon.sd_readers); \
309 FD_CLR((s), &slap_daemon.sd_writers); \
312 # define SLAP_EVENT_IS_READ(fd) FD_ISSET((fd), &readfds)
313 # define SLAP_EVENT_IS_WRITE(fd) FD_ISSET((fd), &writefds)
315 # define SLAP_EVENT_CLR_READ(fd) FD_CLR((fd), &readfds)
316 # define SLAP_EVENT_CLR_WRITE(fd) FD_CLR((fd), &writefds)
318 # define SLAP_EVENT_WAIT(tvp) \
319 select( SLAP_EVENT_MAX, &readfds, \
320 nwriters > 0 ? &writefds : NULL, NULL, (tvp) )
325 * SLP related functions
329 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
330 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
331 static char** slapd_srvurls = NULL;
332 static SLPHandle slapd_hslp = 0;
333 int slapd_register_slp = 0;
335 void slapd_slp_init( const char* urls ) {
338 slapd_srvurls = ldap_str2charray( urls, " " );
340 if( slapd_srvurls == NULL ) return;
342 /* find and expand INADDR_ANY URLs */
343 for( i=0; slapd_srvurls[i] != NULL; i++ ) {
344 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
345 char *host = ldap_pvt_get_fqdn( NULL );
346 if ( host != NULL ) {
347 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
349 sizeof( LDAP_SRVTYPE_PREFIX ) );
350 strcpy( lutil_strcopy(slapd_srvurls[i],
351 LDAP_SRVTYPE_PREFIX ), host );
356 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
357 char *host = ldap_pvt_get_fqdn( NULL );
358 if ( host != NULL ) {
359 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
361 sizeof( LDAPS_SRVTYPE_PREFIX ) );
362 strcpy( lutil_strcopy(slapd_srvurls[i],
363 LDAPS_SRVTYPE_PREFIX ), host );
370 /* open the SLP handle */
371 SLPOpen( "en", 0, &slapd_hslp );
374 void slapd_slp_deinit() {
375 if( slapd_srvurls == NULL ) return;
377 ldap_charray_free( slapd_srvurls );
378 slapd_srvurls = NULL;
380 /* close the SLP handle */
381 SLPClose( slapd_hslp );
384 void slapd_slp_regreport(
392 void slapd_slp_reg() {
395 if( slapd_srvurls == NULL ) return;
397 for( i=0; slapd_srvurls[i] != NULL; i++ ) {
398 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
399 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
400 strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
401 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
405 SLP_LIFETIME_MAXIMUM,
415 void slapd_slp_dereg() {
418 if( slapd_srvurls == NULL ) return;
420 for( i=0; slapd_srvurls[i] != NULL; i++ ) {
421 SLPDereg( slapd_hslp,
427 #endif /* HAVE_SLP */
430 * Add a descriptor to daemon control
432 * If isactive, the descriptor is a live server session and is subject
433 * to idletimeout control. Otherwise, the descriptor is a passive
434 * listener or an outbound client session, and not subject to
435 * idletimeout. The underlying event handler may record the Listener
436 * argument to differentiate Listener's from real sessions.
438 static void slapd_add(ber_socket_t s, int isactive, Listener *sl) {
439 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
441 assert( SLAP_SOCK_NOT_ACTIVE(s) );
443 if ( isactive ) slap_daemon.sd_nactives++;
445 SLAP_ADD_SOCK(s, sl);
447 Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr\n",
450 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
452 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
459 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
462 void slapd_sd_unlock()
464 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
468 * Remove the descriptor from daemon control
480 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
482 assert( SLAP_SOCK_IS_ACTIVE( s ));
484 if ( wasactive ) slap_daemon.sd_nactives--;
486 waswriter = SLAP_SOCK_IS_WRITE(s);
487 wasreader = SLAP_SOCK_IS_READ(s);
489 Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
491 wasreader ? "r" : "",
492 waswriter ? "w" : "" );
494 if ( waswriter ) slap_daemon.sd_nwriters--;
498 /* If we ran out of file descriptors, we dropped a listener from
499 * the select() loop. Now that we're removing a session from our
500 * control, we can try to resume a dropped listener to use.
504 for ( i = 0; slap_listeners[i] != NULL; i++ ) {
505 Listener *lr = slap_listeners[i];
507 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
508 if ( lr->sl_sd == s ) continue;
515 /* Walked the entire list without enabling anything; emfile
516 * counter is stale. Reset it.
518 if ( slap_listeners[i] == NULL ) emfile = 0;
520 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
521 WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
524 void slapd_clr_write(ber_socket_t s, int wake) {
525 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
527 assert( SLAP_SOCK_IS_ACTIVE( s ));
529 if ( SLAP_SOCK_IS_WRITE( s )) {
530 SLAP_SOCK_CLR_WRITE( s );
531 slap_daemon.sd_nwriters--;
534 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
538 void slapd_set_write(ber_socket_t s, int wake) {
539 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
541 assert( SLAP_SOCK_IS_ACTIVE( s ));
543 if ( !SLAP_SOCK_IS_WRITE( s )) {
544 SLAP_SOCK_SET_WRITE( s );
545 slap_daemon.sd_nwriters++;
548 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
552 int slapd_clr_read(ber_socket_t s, int wake) {
554 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
556 if ( SLAP_SOCK_IS_ACTIVE( s )) {
557 SLAP_SOCK_CLR_READ( s );
560 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
566 void slapd_set_read(ber_socket_t s, int wake) {
567 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
569 assert( SLAP_SOCK_IS_ACTIVE( s ));
570 if (!SLAP_SOCK_IS_READ( s )) SLAP_SOCK_SET_READ( s );
572 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
576 static void slapd_close(ber_socket_t s) {
577 Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
582 static void slap_free_listener_addresses(struct sockaddr **sal) {
583 struct sockaddr **sap;
584 if (sal == NULL) return;
585 for (sap = sal; *sap != NULL; sap++) ch_free(*sap);
589 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
590 static int get_url_perms(
597 assert( exts != NULL );
598 assert( perms != NULL );
599 assert( crit != NULL );
602 for ( i = 0; exts[ i ]; i++ ) {
603 char *type = exts[ i ];
606 if ( type[ 0 ] == '!' ) {
611 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=",
612 sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 )
614 char *value = type + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
618 switch (strlen(value)) {
620 /* skip leading '0' */
621 if ( value[ 0 ] != '0' ) return LDAP_OTHER;
625 for ( j = 0; j < 3; j++) {
628 v = value[ j ] - '0';
630 if ( v < 0 || v > 7 ) return LDAP_OTHER;
637 for ( j = 1; j < 10; j++ ) {
638 static mode_t m[] = { 0,
639 S_IRUSR, S_IWUSR, S_IXUSR,
640 S_IRGRP, S_IWGRP, S_IXGRP,
641 S_IROTH, S_IWOTH, S_IXOTH
643 static char c[] = "-rwxrwxrwx";
645 if ( value[ j ] == c[ j ] ) {
648 } else if ( value[ j ] != '-' ) {
667 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
669 /* port = 0 indicates AF_LOCAL */
670 static int slap_get_listener_addresses(
673 struct sockaddr ***sal)
675 struct sockaddr **sap;
679 *sal = ch_malloc(2 * sizeof(void *));
680 if (*sal == NULL) return -1;
683 *sap = ch_malloc(sizeof(struct sockaddr_un));
684 if (*sap == NULL) goto errexit;
688 (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) )
690 Debug( LDAP_DEBUG_ANY,
691 "daemon: domain socket path (%s) too long in URL",
696 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
697 (*sap)->sa_family = AF_LOCAL;
698 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
702 #ifdef HAVE_GETADDRINFO
703 struct addrinfo hints, *res, *sai;
707 memset( &hints, '\0', sizeof(hints) );
708 hints.ai_flags = AI_PASSIVE;
709 hints.ai_socktype = SOCK_STREAM;
710 hints.ai_family = slap_inet4or6;
711 snprintf(serv, sizeof serv, "%d", port);
713 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
714 Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo() failed: %s\n",
715 AC_GAI_STRERROR(err), 0, 0);
720 for (n=2; (sai = sai->ai_next) != NULL; n++) {
723 *sal = ch_calloc(n, sizeof(void *));
724 if (*sal == NULL) return -1;
729 for ( sai=res; sai; sai=sai->ai_next ) {
730 if( sai->ai_addr == NULL ) {
731 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
732 "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
737 switch (sai->ai_family) {
738 # ifdef LDAP_PF_INET6
740 *sap = ch_malloc(sizeof(struct sockaddr_in6));
745 *(struct sockaddr_in6 *)*sap =
746 *((struct sockaddr_in6 *)sai->ai_addr);
750 *sap = ch_malloc(sizeof(struct sockaddr_in));
755 *(struct sockaddr_in *)*sap =
756 *((struct sockaddr_in *)sai->ai_addr);
764 (*sap)->sa_family = sai->ai_family;
775 struct hostent *he = NULL;
777 if ( host == NULL ) {
778 in.s_addr = htonl(INADDR_ANY);
780 } else if ( !inet_aton( host, &in ) ) {
781 he = gethostbyname( host );
783 Debug( LDAP_DEBUG_ANY,
784 "daemon: invalid host %s", host, 0, 0);
787 for (n = 0; he->h_addr_list[n]; n++) /* empty */;
790 *sal = ch_malloc((n+1) * sizeof(void *));
791 if (*sal == NULL) return -1;
794 for ( i = 0; i<n; i++ ) {
795 sap[i] = ch_malloc(sizeof(struct sockaddr_in));
796 if (*sap == NULL) goto errexit;
798 (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
799 sap[i]->sa_family = AF_INET;
800 ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
801 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr,
802 he ? he->h_addr_list[i] : &in, sizeof(struct in_addr) );
811 slap_free_listener_addresses(*sal);
815 static int slap_open_listener(
826 int err, addrlen = 0;
827 struct sockaddr **sal, **psal;
828 int socktype = SOCK_STREAM; /* default to COTS */
830 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
835 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
837 rc = ldap_url_parse( url, &lud );
839 if( rc != LDAP_URL_SUCCESS ) {
840 Debug( LDAP_DEBUG_ANY,
841 "daemon: listen URL \"%s\" parse error=%d\n",
846 l.sl_url.bv_val = NULL;
848 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
853 if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
854 Debug( LDAP_DEBUG_ANY, "daemon: TLS not supported (%s)\n",
856 ldap_free_urldesc( lud );
860 if(! lud->lud_port ) lud->lud_port = LDAP_PORT;
863 l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
865 if(! lud->lud_port ) {
866 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
870 port = (unsigned short) lud->lud_port;
872 tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
873 if ( tmp == LDAP_PROTO_IPC ) {
875 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
876 err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
878 err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
882 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
884 ldap_free_urldesc( lud );
888 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
889 || strcmp(lud->lud_host, "*") == 0 )
891 err = slap_get_listener_addresses(NULL, port, &sal);
893 err = slap_get_listener_addresses(lud->lud_host, port, &sal);
897 #ifdef LDAP_CONNECTIONLESS
898 l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
901 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
902 if ( lud->lud_exts ) {
903 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
905 l.sl_perms = S_IRWXU | S_IRWXO;
907 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
909 ldap_free_urldesc( lud );
910 if ( err ) return -1;
912 /* If we got more than one address returned, we need to make space
913 * for it in the slap_listeners array.
915 for ( num=0; sal[num]; num++ ) /* empty */;
918 slap_listeners = ch_realloc( slap_listeners,
919 (*listeners + 1) * sizeof(Listener *) );
923 while ( *sal != NULL ) {
925 switch( (*sal)->sa_family ) {
944 #ifdef LDAP_CONNECTIONLESS
945 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
948 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
949 if ( l.sl_sd == AC_SOCKET_INVALID ) {
950 int err = sock_errno();
951 Debug( LDAP_DEBUG_ANY,
952 "daemon: %s socket() failed errno=%d (%s)\n",
953 af, err, sock_errstr(err) );
959 if ( l.sl_sd >= dtblsize ) {
960 Debug( LDAP_DEBUG_ANY,
961 "daemon: listener descriptor %ld is too great %ld\n",
962 (long) l.sl_sd, (long) dtblsize, 0 );
963 tcp_close( l.sl_sd );
970 if ( (*sal)->sa_family == AF_LOCAL ) {
971 unlink( ((struct sockaddr_un *)*sal)->sun_path );
976 /* enable address reuse */
978 rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
979 (char *) &tmp, sizeof(tmp) );
980 if ( rc == AC_SOCKET_ERROR ) {
981 int err = sock_errno();
982 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
983 "setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
984 (long) l.sl_sd, err, sock_errstr(err) );
989 switch( (*sal)->sa_family ) {
991 addrlen = sizeof(struct sockaddr_in);
996 /* Try to use IPv6 sockets for IPv6 only */
998 rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
999 (char *) &tmp, sizeof(tmp) );
1000 if ( rc == AC_SOCKET_ERROR ) {
1001 int err = sock_errno();
1002 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1003 "setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
1004 (long) l.sl_sd, err, sock_errstr(err) );
1007 addrlen = sizeof(struct sockaddr_in6);
1011 #ifdef LDAP_PF_LOCAL
1016 setsockopt(l.sl_sd, 0, LOCAL_CREDS, &one, sizeof one);
1019 addrlen = sizeof(struct sockaddr_un);
1024 if (bind(l.sl_sd, *sal, addrlen)) {
1026 Debug( LDAP_DEBUG_ANY,
1027 "daemon: bind(%ld) failed errno=%d (%s)\n",
1028 (long) l.sl_sd, err, sock_errstr(err) );
1029 tcp_close( l.sl_sd );
1034 switch ( (*sal)->sa_family ) {
1035 #ifdef LDAP_PF_LOCAL
1037 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
1038 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
1039 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
1040 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
1043 #endif /* LDAP_PF_LOCAL */
1047 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1048 char addr[INET_ADDRSTRLEN];
1049 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
1050 addr, sizeof(addr) );
1053 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
1055 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
1057 ber_memalloc( sizeof("IP=255.255.255.255:65535") );
1058 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
1060 s != NULL ? s : SLAP_STRING_UNKNOWN, port );
1061 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1064 #ifdef LDAP_PF_INET6
1066 char addr[INET6_ADDRSTRLEN];
1067 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
1069 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
1070 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
1071 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
1072 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
1074 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1076 #endif /* LDAP_PF_INET6 */
1079 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
1080 (int) (*sal)->sa_family, 0, 0 );
1084 AC_MEMCPY(&l.sl_sa, *sal, addrlen);
1085 ber_str2bv( url, 0, 1, &l.sl_url);
1086 li = ch_malloc( sizeof( Listener ) );
1088 slap_listeners[*cur] = li;
1093 slap_free_listener_addresses(psal);
1095 if ( l.sl_url.bv_val == NULL ) {
1096 Debug( LDAP_DEBUG_TRACE,
1097 "slap_open_listener: failed on %s\n", url, 0, 0 );
1101 #ifdef LDAP_CONNECTIONLESS
1103 long id = connection_init( l.sl_sd, &l, "", "", CONN_IS_UDP,
1104 (slap_ssf_t) 0, NULL );
1107 Debug( LDAP_DEBUG_TRACE,
1108 "slap_open_listener: connectionless init failed on %s (%d)\n",
1116 Debug( LDAP_DEBUG_TRACE, "daemon: listener initialized %s\n",
1117 l.sl_url.bv_val, 0, 0 );
1121 static int sockinit(void);
1122 static int sockdestroy(void);
1124 int slapd_daemon_init( const char *urls )
1129 Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
1130 urls ? urls : "<null>", 0, 0 );
1131 if( (rc = sockinit()) != 0 ) return rc;
1134 dtblsize = sysconf( _SC_OPEN_MAX );
1135 #elif HAVE_GETDTABLESIZE
1136 dtblsize = getdtablesize();
1138 dtblsize = FD_SETSIZE;
1141 /* open a pipe (or something equivalent connected to itself).
1142 * we write a byte on this fd whenever we catch a signal. The main
1143 * loop will be select'ing on this socket, and will wake up when
1144 * this byte arrives.
1146 if( (rc = lutil_pair( wake_sds )) < 0 ) {
1147 Debug( LDAP_DEBUG_ANY,
1148 "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
1154 if( urls == NULL ) urls = "ldap:///";
1156 u = ldap_str2charray( urls, " " );
1158 if( u == NULL || u[0] == NULL ) {
1159 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1164 for( i=0; u[i] != NULL; i++ ) {
1165 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1170 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1172 ldap_charray_free( u );
1176 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1178 slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1180 for(n = 0, j = 0; u[n]; n++ ) {
1181 if ( slap_open_listener( u[n], &i, &j ) ) {
1182 ldap_charray_free( u );
1186 slap_listeners[j] = NULL;
1188 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1193 if( slapd_register_slp ) {
1194 slapd_slp_init( urls );
1199 ldap_charray_free( u );
1200 ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1203 ldap_pvt_thread_mutex_init( &slap_daemon.tcpd_mutex );
1211 slapd_daemon_destroy(void)
1213 connections_destroy();
1214 tcp_close( wake_sds[1] );
1215 tcp_close( wake_sds[0] );
1219 if( slapd_register_slp ) {
1226 ldap_pvt_thread_mutex_destroy( &slap_daemon.tcpd_mutex );
1229 ldap_pvt_thread_mutex_destroy( &slap_daemon.sd_mutex );
1240 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1241 Listener *lr = slap_listeners[l];
1243 if ( lr->sl_sd != AC_SOCKET_INVALID ) {
1244 if ( remove ) slapd_remove( lr->sl_sd, 0, 0, 0 );
1246 #ifdef LDAP_PF_LOCAL
1247 if ( lr->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1248 unlink( lr->sl_sa.sa_un_addr.sun_path );
1250 #endif /* LDAP_PF_LOCAL */
1252 slapd_close( lr->sl_sd );
1255 if ( lr->sl_url.bv_val ) {
1256 ber_memfree( lr->sl_url.bv_val );
1259 if ( lr->sl_name.bv_val ) {
1260 ber_memfree( lr->sl_name.bv_val );
1264 slap_listeners[l] = NULL;
1275 socklen_t len = sizeof(from);
1278 struct berval authid = BER_BVNULL;
1279 #ifdef SLAPD_RLOOKUPS
1280 char hbuf[NI_MAXHOST];
1283 char *dnsname = NULL;
1284 char *peeraddr = NULL;
1285 #ifdef LDAP_PF_LOCAL
1286 char peername[MAXPATHLEN + sizeof("PATH=")];
1287 #elif defined(LDAP_PF_INET6)
1288 char peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1290 char peername[sizeof("IP=255.255.255.255:65336")];
1291 #endif /* LDAP_PF_LOCAL */
1295 #ifdef LDAP_CONNECTIONLESS
1296 if ( sl->sl_is_udp ) return 1;
1299 # ifdef LDAP_PF_LOCAL
1300 /* FIXME: apparently accept doesn't fill
1301 * the sun_path sun_path member */
1302 from.sa_un_addr.sun_path[0] = '\0';
1303 # endif /* LDAP_PF_LOCAL */
1305 s = accept( sl->sl_sd, (struct sockaddr *) &from, &len );
1307 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1308 /* Resume the listener FD to allow concurrent-processing of
1309 * additional incoming connections.
1315 if ( s == AC_SOCKET_INVALID ) {
1316 int err = sock_errno();
1327 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1329 /* Stop listening until an existing session closes */
1331 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1334 Debug( LDAP_DEBUG_ANY,
1335 "daemon: accept(%ld) failed errno=%d (%s)\n",
1336 (long) sl->sl_sd, err, sock_errstr(err) );
1337 ldap_pvt_thread_yield();
1341 #ifndef HAVE_WINSOCK
1342 /* make sure descriptor number isn't too great */
1343 if ( s >= dtblsize ) {
1344 Debug( LDAP_DEBUG_ANY,
1345 "daemon: %ld beyond descriptor table size %ld\n",
1346 (long) s, (long) dtblsize, 0 );
1349 ldap_pvt_thread_yield();
1355 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1356 /* newly accepted stream should not be in any of the FD SETS */
1357 assert( SLAP_SOCK_NOT_ACTIVE( s ));
1358 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1361 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1362 #ifdef LDAP_PF_LOCAL
1363 /* for IPv4 and IPv6 sockets only */
1364 if ( from.sa_addr.sa_family != AF_LOCAL )
1365 #endif /* LDAP_PF_LOCAL */
1370 /* enable keep alives */
1372 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1373 (char *) &tmp, sizeof(tmp) );
1374 if ( rc == AC_SOCKET_ERROR ) {
1375 int err = sock_errno();
1376 Debug( LDAP_DEBUG_ANY,
1377 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1378 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1382 /* enable no delay */
1384 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1385 (char *)&tmp, sizeof(tmp) );
1386 if ( rc == AC_SOCKET_ERROR ) {
1387 int err = sock_errno();
1388 Debug( LDAP_DEBUG_ANY,
1389 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1390 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1396 Debug( LDAP_DEBUG_CONNS,
1397 "daemon: listen=%ld, new connection on %ld\n",
1398 (long) sl->sl_sd, (long) s, 0 );
1400 switch ( from.sa_addr.sa_family ) {
1401 # ifdef LDAP_PF_LOCAL
1403 /* FIXME: apparently accept doesn't fill
1404 * the sun_path sun_path member */
1405 if ( from.sa_un_addr.sun_path[0] == '\0' ) {
1406 AC_MEMCPY( from.sa_un_addr.sun_path,
1407 sl->sl_sa.sa_un_addr.sun_path,
1408 sizeof( from.sa_un_addr.sun_path ) );
1411 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1417 if( getpeereid( s, &uid, &gid ) == 0 ) {
1418 authid.bv_val = ch_malloc(
1419 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1420 "cn=peercred,cn=external,cn=auth" ) + 1 );
1421 authid.bv_len = sprintf( authid.bv_val,
1422 "gidNumber=%d+uidNumber=%d,"
1423 "cn=peercred,cn=external,cn=auth",
1424 (int) gid, (int) uid );
1425 assert( authid.bv_len <=
1426 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1427 "cn=peercred,cn=external,cn=auth" ) );
1432 #endif /* LDAP_PF_LOCAL */
1434 # ifdef LDAP_PF_INET6
1436 if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1437 peeraddr = inet_ntoa( *((struct in_addr *)
1438 &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1439 sprintf( peername, "IP=%s:%d",
1440 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1441 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1443 char addr[INET6_ADDRSTRLEN];
1445 peeraddr = (char *) inet_ntop( AF_INET6,
1446 &from.sa_in6_addr.sin6_addr,
1447 addr, sizeof addr );
1448 sprintf( peername, "IP=%s %d",
1449 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1450 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1453 # endif /* LDAP_PF_INET6 */
1456 peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1457 sprintf( peername, "IP=%s:%d",
1458 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1459 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1467 if ( ( from.sa_addr.sa_family == AF_INET )
1468 #ifdef LDAP_PF_INET6
1469 || ( from.sa_addr.sa_family == AF_INET6 )
1474 #ifdef SLAPD_RLOOKUPS
1475 if ( use_reverse_lookup ) {
1477 if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
1478 sizeof(hbuf), &herr ) == 0) {
1479 ldap_pvt_str2lower( hbuf );
1483 #endif /* SLAPD_RLOOKUPS */
1488 ldap_pvt_thread_mutex_lock( &slap_daemon.tcpd_mutex );
1489 rc = hosts_ctl("slapd",
1490 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1491 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1492 SLAP_STRING_UNKNOWN );
1493 ldap_pvt_thread_mutex_unlock( &slap_daemon.tcpd_mutex );
1496 Statslog( LDAP_DEBUG_STATS,
1497 "fd=%ld DENIED from %s (%s)\n",
1499 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1500 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1506 #endif /* HAVE_TCPD */
1509 id = connection_init(s, sl,
1510 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1513 sl->sl_is_tls ? CONN_IS_TLS : 0,
1518 authid.bv_val ? &authid : NULL );
1520 if( authid.bv_val ) ch_free(authid.bv_val);
1523 Debug( LDAP_DEBUG_ANY,
1524 "daemon: connection_init(%ld, %s, %s) failed.\n",
1525 (long) s, peername, sl->sl_name.bv_val );
1530 Statslog( LDAP_DEBUG_STATS,
1531 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1532 id, (long) s, peername, sl->sl_name.bv_val,
1538 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1540 slap_listener_thread(
1546 rc = slap_listener( (Listener*)ptr );
1548 if( rc != LDAP_SUCCESS ) {
1549 Debug( LDAP_DEBUG_ANY,
1550 "listener_thread: failed %d", rc, 0, 0 );
1557 slap_listener_activate(
1562 Debug( LDAP_DEBUG_TRACE, "slap_listener_activate(%d): %s\n",
1563 sl->sl_sd, sl->sl_busy ? "busy" : "", 0 );
1567 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1568 slap_listener_thread, (void *) sl );
1571 Debug( LDAP_DEBUG_ANY,
1572 "listener_activate(%d): submit failed (%d)\n",
1584 time_t last_idle_check = 0;
1585 struct timeval idle;
1588 #define SLAPD_IDLE_CHECK_LIMIT 4
1590 if ( global_idletimeout > 0 ) {
1591 last_idle_check = slap_get_time();
1592 /* Set the select timeout.
1593 * Don't just truncate, preserve the fractions of
1594 * seconds to prevent sleeping for zero time.
1596 idle.tv_sec = global_idletimeout / SLAPD_IDLE_CHECK_LIMIT;
1597 idle.tv_usec = global_idletimeout - \
1598 ( idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT );
1599 idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
1605 slapd_add( wake_sds[0], 0, NULL );
1607 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1608 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
1610 #ifdef LDAP_CONNECTIONLESS
1611 /* Since this is connectionless, the data port is the
1612 * listening port. The listen() and accept() calls
1615 if ( slap_listeners[l]->sl_is_udp ) {
1616 slapd_add( slap_listeners[l]->sl_sd, 1, slap_listeners[l] );
1621 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN_BACKLOG ) == -1 ) {
1622 int err = sock_errno();
1624 #ifdef LDAP_PF_INET6
1625 /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1626 * we are already listening to in6addr_any, then we want to ignore
1627 * this and continue.
1629 if ( err == EADDRINUSE ) {
1631 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1632 struct sockaddr_in6 sa6;
1634 if ( sa.sin_family == AF_INET &&
1635 sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1636 for ( i = 0 ; i < l; i++ ) {
1637 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1638 if ( sa6.sin6_family == AF_INET6 &&
1639 !memcmp( &sa6.sin6_addr, &in6addr_any,
1640 sizeof(struct in6_addr) ) )
1647 /* We are already listening to in6addr_any */
1648 Debug( LDAP_DEBUG_CONNS,
1649 "daemon: Attempt to listen to 0.0.0.0 failed, "
1650 "already listening on ::, assuming IPv4 included\n",
1652 slapd_close( slap_listeners[l]->sl_sd );
1653 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1659 Debug( LDAP_DEBUG_ANY,
1660 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1661 slap_listeners[l]->sl_url.bv_val, err,
1666 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1667 /* make the listening socket non-blocking */
1668 if ( ber_pvt_socket_set_nonblock( slap_listeners[l]->sl_sd, 1 ) < 0 ) {
1669 Debug( LDAP_DEBUG_ANY, "slapd_daemon_task: "
1670 "set nonblocking on a listening socket failed\n",
1677 slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l] );
1680 #ifdef HAVE_NT_SERVICE_MANAGER
1681 if ( started_event != NULL ) {
1682 ldap_pvt_thread_cond_signal( &started_event );
1686 #ifdef SLAP_SEM_LOAD_CONTROL
1688 * initialize count and lazyness of a semaphore
1690 (void) ldap_lazy_sem_init(
1691 SLAP_MAX_WORKER_THREADS + 4 /* max workers + margin */,
1695 /* initialization complete. Here comes the loop. */
1697 while ( !slapd_shutdown ) {
1702 #if SLAP_EVENTS_ARE_INDEXED
1703 ber_socket_t nrfds, nwfds;
1705 #define SLAPD_EBADF_LIMIT 16
1712 struct timeval *tvp;
1714 struct timeval *cat;
1717 now = slap_get_time();
1719 if( ( global_idletimeout > 0 ) &&
1720 difftime( last_idle_check +
1721 global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1722 connections_timeout_idle( now );
1723 last_idle_check = now;
1728 if( slapd_gentle_shutdown ) {
1729 ber_socket_t active;
1731 if( slapd_gentle_shutdown == 1 ) {
1733 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1734 close_listeners( 1 );
1735 frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
1736 LDAP_STAILQ_FOREACH(be, &backendDB, be_next) {
1737 be->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
1739 slapd_gentle_shutdown = 2;
1742 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1743 active = slap_daemon.sd_nactives;
1744 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1753 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1755 nwriters = slap_daemon.sd_nwriters;
1757 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1758 Listener *lr = slap_listeners[l];
1760 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
1762 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1763 if ( lr->sl_mute || lr->sl_busy )
1768 SLAP_SOCK_CLR_READ( lr->sl_sd );
1770 SLAP_SOCK_SET_READ( lr->sl_sd );
1776 nfds = SLAP_EVENT_MAX;
1778 if ( global_idletimeout && slap_daemon.sd_nactives ) at = 1;
1780 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1783 #if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
1784 && ( tv.tv_sec || tv.tv_usec )
1793 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1794 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
1795 while ( cat && cat->tv_sec && cat->tv_sec <= now ) {
1796 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
1797 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1799 ldap_pvt_runqueue_runtask( &slapd_rq, rtask );
1800 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1801 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1802 ldap_pvt_thread_pool_submit( &connection_pool,
1803 rtask->routine, (void *) rtask );
1804 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1806 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
1808 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1810 if ( cat && cat->tv_sec ) {
1811 time_t diff = difftime( cat->tv_sec, now );
1812 if ( diff == 0 ) diff = tdelta;
1813 if ( tvp == NULL || diff < tv.tv_sec ) {
1820 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1821 Listener *lr = slap_listeners[l];
1823 if ( lr->sl_sd == AC_SOCKET_INVALID ) {
1827 if ( lr->sl_mute ) {
1828 Debug( LDAP_DEBUG_CONNS,
1829 "daemon: select: listen=%d muted\n",
1834 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1835 if ( lr->sl_busy ) {
1836 Debug( LDAP_DEBUG_CONNS,
1837 "daemon: select: listen=%d busy\n",
1843 Debug( LDAP_DEBUG_CONNS,
1844 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1845 lr->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
1848 switch(ns = SLAP_EVENT_WAIT(tvp)) {
1849 case -1: { /* failure - try again */
1850 int err = sock_errno();
1854 /* you'd think this would be EBADF */
1855 || err == WSAENOTSOCK
1858 if (++ebadf < SLAPD_EBADF_LIMIT)
1862 if( err != EINTR ) {
1863 Debug( LDAP_DEBUG_CONNS,
1864 "daemon: select failed (%d): %s\n",
1865 err, sock_errstr(err), 0 );
1871 case 0: /* timeout - let threads run */
1873 #ifndef HAVE_YIELDING_SELECT
1874 Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1877 ldap_pvt_thread_yield();
1881 default: /* something happened - deal with it */
1882 if( slapd_shutdown ) continue;
1885 Debug( LDAP_DEBUG_CONNS,
1886 "daemon: activity on %d descriptor%s\n",
1887 ns, ns != 1 ? "s" : "", 0 );
1891 #if SLAP_EVENTS_ARE_INDEXED
1892 if ( SLAP_EVENT_IS_READ( wake_sds[0] )) {
1894 SLAP_EVENT_CLR_READ( wake_sds[0] );
1896 tcp_read( wake_sds[0], c, sizeof(c) );
1897 Debug( LDAP_DEBUG_CONNS, "daemon: waked\n", 0, 0, 0 );
1901 /* The event slot equals the descriptor number - this is
1902 * true for Unix select and poll. We treat Windows select
1903 * like this too, even though it's a kludge.
1905 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1908 if ( ns <= 0 ) break;
1909 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
1910 #ifdef LDAP_CONNECTIONLESS
1911 if ( slap_listeners[l]->sl_is_udp ) continue;
1913 if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd )) continue;
1916 SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
1917 SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
1920 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1921 rc = slap_listener_activate(slap_listeners[l]);
1923 rc = slap_listener(slap_listeners[l]);
1927 /* bypass the following tests if no descriptors left */
1929 #ifndef HAVE_YIELDING_SELECT
1930 ldap_pvt_thread_yield();
1935 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1937 nrfds = readfds.fd_count;
1938 nwfds = writefds.fd_count;
1939 for ( i = 0; i < readfds.fd_count; i++ ) {
1940 Debug( LDAP_DEBUG_CONNS, " %d%s",
1941 readfds.fd_array[i], "r", 0 );
1943 for ( i = 0; i < writefds.fd_count; i++ ) {
1944 Debug( LDAP_DEBUG_CONNS, " %d%s",
1945 writefds.fd_array[i], "w", 0 );
1951 for ( i = 0; i < nfds; i++ ) {
1954 r = SLAP_EVENT_IS_READ( i );
1955 /* writefds was not initialized if nwriters was zero */
1956 w = nwriters ? SLAP_EVENT_IS_WRITE( i ) : 0;
1958 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1959 r ? "r" : "", w ? "w" : "" );
1969 if ( ns <= 0 ) break;
1972 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1975 /* loop through the writers */
1976 for ( i = 0; nwfds > 0; i++ ) {
1979 wd = writefds.fd_array[i];
1981 if( ! SLAP_EVENT_IS_WRITE( i ) ) continue;
1985 SLAP_EVENT_CLR_WRITE( wd );
1988 Debug( LDAP_DEBUG_CONNS,
1989 "daemon: write active on %d\n",
1992 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1993 connection_write_activate( wd );
1996 * NOTE: it is possible that the connection was closed
1997 * and that the stream is now inactive.
1998 * connection_write() must validate the stream is still
2001 if ( connection_write( wd ) < 0 ) {
2002 if ( SLAP_EVENT_IS_READ( wd )) {
2003 SLAP_EVENT_CLR_READ( (unsigned) wd );
2011 for ( i = 0; nrfds > 0; i++ ) {
2014 rd = readfds.fd_array[i];
2016 if( ! SLAP_EVENT_IS_READ( i ) ) continue;
2019 SLAP_EVENT_CLR_READ( rd );
2022 Debug ( LDAP_DEBUG_CONNS,
2023 "daemon: read activity on %d\n", rd, 0, 0 );
2025 * NOTE: it is possible that the connection was closed
2026 * and that the stream is now inactive.
2027 * connection_read() must valid the stream is still
2031 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2032 connection_read_activate( rd );
2034 if ( connection_read( rd ) < 0 ) {
2039 #else /* !SLAP_EVENTS_ARE_INDEXED */
2041 /* The events are returned in an arbitrary list. This is true
2042 * for /dev/poll, epoll and kqueue. In order to prioritize things
2043 * so that we can handle wake_sds first, listeners second, and then
2044 * all other connections last (as we do for select), we would need
2045 * to use multiple event handles and cascade them.
2047 * That seems like a bit of hassle. So the wake_sds check has been
2048 * skipped. For epoll and kqueue we can associate arbitrary data with
2049 * an event, so we could use pointers to the listener structure
2050 * instead of just the file descriptor. For /dev/poll we have to
2051 * search the listeners array for a matching descriptor.
2053 * We now handle wake events when we see them; they are not given
2057 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
2059 for (i=0; i<ns; i++) {
2062 /* Don't log listener events */
2063 if ( SLAP_EVENT_IS_LISTENER(i)
2064 #ifdef LDAP_CONNECTIONLESS
2065 && !((SLAP_EVENT_LISTENER(i))->sl_is_udp)
2072 /* Don't log internal wake events */
2073 if ( SLAP_EVENT_FD( i ) == wake_sds[0] ) continue;
2075 r = SLAP_EVENT_IS_READ( i );
2076 w = SLAP_EVENT_IS_WRITE( i );
2078 Debug( LDAP_DEBUG_CONNS, " %d%s%s", SLAP_EVENT_FD(i),
2079 r ? "r" : "", w ? "w" : "" );
2082 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2085 for (i=0; i<ns; i++) {
2088 if ( SLAP_EVENT_IS_LISTENER(i) ) {
2089 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2090 rc = slap_listener_activate( SLAP_EVENT_LISTENER( i ));
2092 rc = slap_listener( SLAP_EVENT_LISTENER( i ));
2096 /* If we found a regular listener, rc is now zero, and we
2097 * can skip the data portion. But if it was a UDP listener
2098 * then rc is still 1, and we want to handle the data.
2101 fd = SLAP_EVENT_FD( i );
2103 /* Handle wake events */
2104 if ( fd == wake_sds[0] ) {
2107 tcp_read( wake_sds[0], c, sizeof(c) );
2111 if( SLAP_EVENT_IS_WRITE( i ) ) {
2112 Debug( LDAP_DEBUG_CONNS,
2113 "daemon: write active on %d\n",
2116 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2117 connection_write_activate( fd );
2120 * NOTE: it is possible that the connection was closed
2121 * and that the stream is now inactive.
2122 * connection_write() must valid the stream is still
2125 if ( connection_write( fd ) < 0 ) {
2131 if( SLAP_EVENT_IS_READ( i ) ) {
2132 Debug( LDAP_DEBUG_CONNS,
2133 "daemon: read active on %d\n",
2136 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2137 connection_read_activate( fd );
2140 * NOTE: it is possible that the connection was closed
2141 * and that the stream is now inactive.
2142 * connection_read() must valid the stream is still
2145 if ( connection_read( fd ) < 0 ) slapd_close( fd );
2150 #endif /* SLAP_EVENTS_ARE_INDEXED */
2152 #ifndef HAVE_YIELDING_SELECT
2153 ldap_pvt_thread_yield();
2157 if( slapd_shutdown == 1 ) {
2158 Debug( LDAP_DEBUG_ANY,
2159 "daemon: shutdown requested and initiated.\n",
2162 } else if ( slapd_shutdown == 2 ) {
2163 #ifdef HAVE_NT_SERVICE_MANAGER
2164 Debug( LDAP_DEBUG_ANY,
2165 "daemon: shutdown initiated by Service Manager.\n",
2167 #else /* !HAVE_NT_SERVICE_MANAGER */
2168 Debug( LDAP_DEBUG_ANY,
2169 "daemon: abnormal condition, shutdown initiated.\n",
2171 #endif /* !HAVE_NT_SERVICE_MANAGER */
2173 Debug( LDAP_DEBUG_ANY,
2174 "daemon: no active streams, shutdown initiated.\n",
2178 if( slapd_gentle_shutdown != 2 ) close_listeners ( 0 );
2180 if( !slapd_gentle_shutdown ) {
2181 slapd_abrupt_shutdown = 1;
2182 connections_shutdown();
2185 Debug( LDAP_DEBUG_ANY,
2186 "slapd shutdown: waiting for %d threads to terminate\n",
2187 ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
2188 ldap_pvt_thread_pool_destroy(&connection_pool, 1);
2190 free ( slap_listeners );
2191 slap_listeners = NULL;
2197 int slapd_daemon( void )
2203 #define SLAPD_LISTENER_THREAD 1
2204 #if defined( SLAPD_LISTENER_THREAD )
2206 ldap_pvt_thread_t listener_tid;
2208 /* listener as a separate THREAD */
2209 rc = ldap_pvt_thread_create( &listener_tid,
2210 0, slapd_daemon_task, NULL );
2213 Debug( LDAP_DEBUG_ANY,
2214 "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2218 /* wait for the listener thread to complete */
2219 ldap_pvt_thread_join( listener_tid, (void *) NULL );
2222 /* experimental code */
2223 slapd_daemon_task( NULL );
2230 static int sockinit(void)
2232 #if defined( HAVE_WINSOCK2 )
2233 WORD wVersionRequested;
2237 wVersionRequested = MAKEWORD( 2, 0 );
2239 err = WSAStartup( wVersionRequested, &wsaData );
2241 /* Tell the user that we couldn't find a usable */
2246 /* Confirm that the WinSock DLL supports 2.0.*/
2247 /* Note that if the DLL supports versions greater */
2248 /* than 2.0 in addition to 2.0, it will still return */
2249 /* 2.0 in wVersion since that is the version we */
2252 if ( LOBYTE( wsaData.wVersion ) != 2 ||
2253 HIBYTE( wsaData.wVersion ) != 0 )
2255 /* Tell the user that we couldn't find a usable */
2261 /* The WinSock DLL is acceptable. Proceed. */
2262 #elif defined( HAVE_WINSOCK )
2264 if ( WSAStartup( 0x0101, &wsaData ) != 0 ) return -1;
2270 static int sockdestroy(void)
2272 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2279 slap_sig_shutdown( int sig )
2282 Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2286 * If the NT Service Manager is controlling the server, we don't
2287 * want SIGBREAK to kill the server. For some strange reason,
2288 * SIGBREAK is generated when a user logs out.
2291 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2292 if (is_NT_Service && sig == SIGBREAK) {
2297 if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0) {
2298 slapd_gentle_shutdown = 1;
2307 /* reinstall self */
2308 (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2312 slap_sig_wake( int sig )
2316 /* reinstall self */
2317 (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2321 void slapd_add_internal(ber_socket_t s, int isactive) {
2322 slapd_add(s, isactive, NULL);
2325 Listener ** slapd_get_listeners(void) {
2326 return slap_listeners;
2329 void slap_wake_listener() {