2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2007 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>
45 #elif defined(SLAP_X_DEVPOLL) && defined(HAVE_SYS_DEVPOLL_H) && defined(HAVE_DEVPOLL)
46 # include <sys/types.h>
47 # include <sys/stat.h>
49 # include <sys/devpoll.h>
50 #endif /* ! epoll && ! /dev/poll */
54 int allow_severity = LOG_INFO;
55 int deny_severity = LOG_NOTICE;
57 # define SLAP_STRING_UNKNOWN STRING_UNKNOWN
58 #else /* ! TCP Wrappers */
59 # define SLAP_STRING_UNKNOWN "unknown"
60 #endif /* ! TCP Wrappers */
63 # include <sys/stat.h>
64 /* this should go in <ldap.h> as soon as it is accepted */
65 # define LDAPI_MOD_URLEXT "x-mod"
66 #endif /* LDAP_PF_LOCAL */
69 int slap_inet4or6 = AF_UNSPEC;
71 int slap_inet4or6 = AF_INET;
76 ber_socket_t dtblsize;
77 slap_ssf_t local_ssf = LDAP_PVT_SASL_LOCAL_SSF;
78 struct runqueue_s slapd_rq;
80 Listener **slap_listeners = NULL;
82 #ifndef SLAPD_LISTEN_BACKLOG
83 #define SLAPD_LISTEN_BACKLOG 1024
84 #endif /* ! SLAPD_LISTEN_BACKLOG */
86 static ber_socket_t wake_sds[2];
89 static volatile int waking;
91 #define WAKE_LISTENER(w) do { \
92 if ((w) && ++waking < 5) { \
93 tcp_write( wake_sds[1], "0", 1 ); \
96 #else /* ! NO_THREADS */
97 #define WAKE_LISTENER(w) do { \
99 tcp_write( wake_sds[1], "0", 1 ); \
102 #endif /* ! NO_THREADS */
104 volatile sig_atomic_t slapd_shutdown = 0;
105 volatile sig_atomic_t slapd_gentle_shutdown = 0;
106 volatile sig_atomic_t slapd_abrupt_shutdown = 0;
108 static struct slap_daemon {
109 ldap_pvt_thread_mutex_t sd_mutex;
111 ldap_pvt_thread_mutex_t sd_tcpd_mutex;
112 #endif /* TCP Wrappers */
114 ber_socket_t sd_nactives;
117 #if defined(HAVE_EPOLL)
118 struct epoll_event *sd_epolls;
122 #elif defined(SLAP_X_DEVPOLL) && defined(HAVE_DEVPOLL)
124 struct pollfd *sd_pollfd;
129 #else /* ! epoll && ! /dev/poll */
131 /* In winsock, accept() returns values higher than dtblsize
132 so don't bother with this optimization */
134 #endif /* ! HAVE_WINSOCK */
138 #endif /* ! epoll && ! /dev/poll */
142 * NOTE: naming convention for macros:
144 * - SLAP_SOCK_* and SLAP_EVENT_* for public interface that deals
145 * with file descriptors and events respectively
147 * - SLAP_<type>_* for private interface; type by now is one of
148 * EPOLL, DEVPOLL, SELECT
150 * private interface should not be used in the code.
152 #if defined(HAVE_EPOLL)
153 /***************************************
154 * Use epoll infrastructure - epoll(4) *
155 ***************************************/
156 # define SLAP_EVENT_FNAME "epoll"
157 # define SLAP_EVENTS_ARE_INDEXED 0
158 # define SLAP_EPOLL_SOCK_IX(s) (slap_daemon.sd_index[(s)])
159 # define SLAP_EPOLL_SOCK_EP(s) (slap_daemon.sd_epolls[SLAP_EPOLL_SOCK_IX(s)])
160 # define SLAP_EPOLL_SOCK_EV(s) (SLAP_EPOLL_SOCK_EP(s).events)
161 # define SLAP_SOCK_IS_ACTIVE(s) (SLAP_EPOLL_SOCK_IX(s) != -1)
162 # define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_EPOLL_SOCK_IX(s) == -1)
163 # define SLAP_EPOLL_SOCK_IS_SET(s, mode) (SLAP_EPOLL_SOCK_EV(s) & (mode))
165 # define SLAP_SOCK_IS_READ(s) SLAP_EPOLL_SOCK_IS_SET((s), EPOLLIN)
166 # define SLAP_SOCK_IS_WRITE(s) SLAP_EPOLL_SOCK_IS_SET((s), EPOLLOUT)
168 # define SLAP_EPOLL_SOCK_SET(s, mode) do { \
169 if ( (SLAP_EPOLL_SOCK_EV(s) & (mode)) != (mode) ) { \
170 SLAP_EPOLL_SOCK_EV(s) |= (mode); \
171 epoll_ctl( slap_daemon.sd_epfd, EPOLL_CTL_MOD, (s), \
172 &SLAP_EPOLL_SOCK_EP(s) ); \
176 # define SLAP_EPOLL_SOCK_CLR(s, mode) do { \
177 if ( (SLAP_EPOLL_SOCK_EV(s) & (mode)) ) { \
178 SLAP_EPOLL_SOCK_EV(s) &= ~(mode); \
179 epoll_ctl( slap_daemon.sd_epfd, EPOLL_CTL_MOD, s, \
180 &SLAP_EPOLL_SOCK_EP(s) ); \
184 # define SLAP_SOCK_SET_READ(s) SLAP_EPOLL_SOCK_SET(s, EPOLLIN)
185 # define SLAP_SOCK_SET_WRITE(s) SLAP_EPOLL_SOCK_SET(s, EPOLLOUT)
187 # define SLAP_SOCK_CLR_READ(s) SLAP_EPOLL_SOCK_CLR((s), EPOLLIN)
188 # define SLAP_SOCK_CLR_WRITE(s) SLAP_EPOLL_SOCK_CLR((s), EPOLLOUT)
190 # ifdef SLAP_LIGHTWEIGHT_DISPATCHER
191 # define SLAP_SOCK_SET_SUSPEND(s) \
192 ( slap_daemon.sd_suspend[SLAP_EPOLL_SOCK_IX(s)] = 1 )
193 # define SLAP_SOCK_CLR_SUSPEND(s) \
194 ( slap_daemon.sd_suspend[SLAP_EPOLL_SOCK_IX(s)] = 0 )
195 # define SLAP_SOCK_IS_SUSPEND(s) \
196 ( slap_daemon.sd_suspend[SLAP_EPOLL_SOCK_IX(s)] == 1 )
197 # endif /* SLAP_LIGHTWEIGHT_DISPATCHER */
199 # define SLAP_EPOLL_EVENT_CLR(i, mode) (revents[(i)].events &= ~(mode))
201 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
203 /* If a Listener address is provided, store that as the epoll data.
204 * Otherwise, store the address of this socket's slot in the
205 * index array. If we can't do this add, the system is out of
206 * resources and we need to shutdown.
208 # define SLAP_SOCK_ADD(s, l) do { \
210 SLAP_EPOLL_SOCK_IX((s)) = slap_daemon.sd_nfds; \
211 SLAP_EPOLL_SOCK_EP((s)).data.ptr = (l) ? (l) : (void *)(&SLAP_EPOLL_SOCK_IX(s)); \
212 SLAP_EPOLL_SOCK_EV((s)) = EPOLLIN; \
213 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_ADD, \
214 (s), &SLAP_EPOLL_SOCK_EP((s))); \
216 slap_daemon.sd_nfds++; \
218 Debug( LDAP_DEBUG_ANY, \
219 "daemon: epoll_ctl(ADD,fd=%d) failed, errno=%d, shutting down\n", \
221 slapd_shutdown = 2; \
225 # define SLAP_EPOLL_EV_LISTENER(ptr) \
226 (((int *)(ptr) >= slap_daemon.sd_index && \
227 (int *)(ptr) <= &slap_daemon.sd_index[dtblsize]) ? 0 : 1 )
229 # define SLAP_EPOLL_EV_PTRFD(ptr) (SLAP_EPOLL_EV_LISTENER(ptr) ? \
230 ((Listener *)ptr)->sl_sd : \
231 (ber_socket_t) ((int *)(ptr) - slap_daemon.sd_index))
233 # define SLAP_SOCK_DEL(s) do { \
234 int fd, rc, index = SLAP_EPOLL_SOCK_IX((s)); \
235 if ( index < 0 ) break; \
236 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_DEL, \
237 (s), &SLAP_EPOLL_SOCK_EP((s))); \
238 slap_daemon.sd_epolls[index] = \
239 slap_daemon.sd_epolls[slap_daemon.sd_nfds-1]; \
240 fd = SLAP_EPOLL_EV_PTRFD(slap_daemon.sd_epolls[index].data.ptr); \
241 slap_daemon.sd_index[fd] = index; \
242 slap_daemon.sd_index[(s)] = -1; \
243 slap_daemon.sd_nfds--; \
246 # define SLAP_EVENT_CLR_READ(i) SLAP_EPOLL_EVENT_CLR((i), EPOLLIN)
247 # define SLAP_EVENT_CLR_WRITE(i) SLAP_EPOLL_EVENT_CLR((i), EPOLLOUT)
249 # define SLAP_EPOLL_EVENT_CHK(i, mode) (revents[(i)].events & mode)
251 # define SLAP_EVENT_IS_READ(i) SLAP_EPOLL_EVENT_CHK((i), EPOLLIN)
252 # define SLAP_EVENT_IS_WRITE(i) SLAP_EPOLL_EVENT_CHK((i), EPOLLOUT)
253 # define SLAP_EVENT_IS_LISTENER(i) SLAP_EPOLL_EV_LISTENER(revents[(i)].data.ptr)
254 # define SLAP_EVENT_LISTENER(i) ((Listener *)(revents[(i)].data.ptr))
256 # define SLAP_EVENT_FD(i) SLAP_EPOLL_EV_PTRFD(revents[(i)].data.ptr)
258 # define SLAP_SOCK_INIT do { \
259 slap_daemon.sd_epolls = ch_calloc(1, \
260 ( sizeof(struct epoll_event) * 2 \
261 + sizeof(int) ) * dtblsize * 2); \
262 slap_daemon.sd_index = (int *)&slap_daemon.sd_epolls[ 2 * dtblsize ]; \
263 slap_daemon.sd_epfd = epoll_create( dtblsize ); \
264 for ( i = 0; i < dtblsize; i++ ) slap_daemon.sd_index[i] = -1; \
267 # define SLAP_SOCK_DESTROY do { \
268 if ( slap_daemon.sd_epolls != NULL ) { \
269 ch_free( slap_daemon.sd_epolls ); \
270 slap_daemon.sd_epolls = NULL; \
271 slap_daemon.sd_index = NULL; \
272 close( slap_daemon.sd_epfd ); \
276 # define SLAP_EVENT_DECL struct epoll_event *revents
278 # define SLAP_EVENT_INIT do { \
279 revents = slap_daemon.sd_epolls + dtblsize; \
282 # define SLAP_EVENT_WAIT(tvp, nsp) do { \
283 *(nsp) = epoll_wait( slap_daemon.sd_epfd, revents, \
284 dtblsize, (tvp) ? (tvp)->tv_sec * 1000 : -1 ); \
287 #elif defined(SLAP_X_DEVPOLL) && defined(HAVE_DEVPOLL)
289 /*************************************************************
290 * Use Solaris' (>= 2.7) /dev/poll infrastructure - poll(7d) *
291 *************************************************************/
292 # define SLAP_EVENT_FNAME "/dev/poll"
293 # define SLAP_EVENTS_ARE_INDEXED 0
295 * - sd_index is used much like with epoll()
296 * - sd_l is maintained as an array containing the address
297 * of the listener; the index is the fd itself
298 * - sd_pollfd is used to keep track of what data has been
299 * registered in /dev/poll
301 # define SLAP_DEVPOLL_SOCK_IX(s) (slap_daemon.sd_index[(s)])
302 # define SLAP_DEVPOLL_SOCK_LX(s) (slap_daemon.sd_l[(s)])
303 # define SLAP_DEVPOLL_SOCK_EP(s) (slap_daemon.sd_pollfd[SLAP_DEVPOLL_SOCK_IX((s))])
304 # define SLAP_DEVPOLL_SOCK_FD(s) (SLAP_DEVPOLL_SOCK_EP((s)).fd)
305 # define SLAP_DEVPOLL_SOCK_EV(s) (SLAP_DEVPOLL_SOCK_EP((s)).events)
306 # define SLAP_SOCK_IS_ACTIVE(s) (SLAP_DEVPOLL_SOCK_IX((s)) != -1)
307 # define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_DEVPOLL_SOCK_IX((s)) == -1)
308 # define SLAP_SOCK_IS_SET(s, mode) (SLAP_DEVPOLL_SOCK_EV((s)) & (mode))
310 # define SLAP_SOCK_IS_READ(s) SLAP_SOCK_IS_SET((s), POLLIN)
311 # define SLAP_SOCK_IS_WRITE(s) SLAP_SOCK_IS_SET((s), POLLOUT)
313 /* as far as I understand, any time we need to communicate with the kernel
314 * about the number and/or properties of a file descriptor we need it to
315 * wait for, we have to rewrite the whole set */
316 # define SLAP_DEVPOLL_WRITE_POLLFD(s, pfd, n, what, shdn) do { \
318 size_t size = (n) * sizeof( struct pollfd ); \
319 /* FIXME: use pwrite? */ \
320 rc = write( slap_daemon.sd_dpfd, (pfd), size ); \
321 if ( rc != size ) { \
322 Debug( LDAP_DEBUG_ANY, "daemon: " SLAP_EVENT_FNAME ": " \
323 "%s fd=%d failed errno=%d\n", \
324 (what), (s), errno ); \
326 slapd_shutdown = 2; \
331 # define SLAP_DEVPOLL_SOCK_SET(s, mode) do { \
332 Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_SET_%s(%d)=%d\n", \
333 (mode) == POLLIN ? "READ" : "WRITE", (s), \
334 ( (SLAP_DEVPOLL_SOCK_EV((s)) & (mode)) != (mode) ) ); \
335 if ( (SLAP_DEVPOLL_SOCK_EV((s)) & (mode)) != (mode) ) { \
337 SLAP_DEVPOLL_SOCK_EV((s)) |= (mode); \
338 pfd.fd = SLAP_DEVPOLL_SOCK_FD((s)); \
339 pfd.events = /* (mode) */ SLAP_DEVPOLL_SOCK_EV((s)); \
340 SLAP_DEVPOLL_WRITE_POLLFD((s), &pfd, 1, "SET", 0); \
344 # define SLAP_DEVPOLL_SOCK_CLR(s, mode) do { \
345 Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_CLR_%s(%d)=%d\n", \
346 (mode) == POLLIN ? "READ" : "WRITE", (s), \
347 ( (SLAP_DEVPOLL_SOCK_EV((s)) & (mode)) == (mode) ) ); \
348 if ((SLAP_DEVPOLL_SOCK_EV((s)) & (mode)) == (mode) ) { \
349 struct pollfd pfd[2]; \
350 SLAP_DEVPOLL_SOCK_EV((s)) &= ~(mode); \
351 pfd[0].fd = SLAP_DEVPOLL_SOCK_FD((s)); \
352 pfd[0].events = POLLREMOVE; \
353 pfd[1] = SLAP_DEVPOLL_SOCK_EP((s)); \
354 SLAP_DEVPOLL_WRITE_POLLFD((s), &pfd[0], 2, "CLR", 0); \
358 # define SLAP_SOCK_SET_READ(s) SLAP_DEVPOLL_SOCK_SET(s, POLLIN)
359 # define SLAP_SOCK_SET_WRITE(s) SLAP_DEVPOLL_SOCK_SET(s, POLLOUT)
361 # define SLAP_SOCK_CLR_READ(s) SLAP_DEVPOLL_SOCK_CLR((s), POLLIN)
362 # define SLAP_SOCK_CLR_WRITE(s) SLAP_DEVPOLL_SOCK_CLR((s), POLLOUT)
364 # ifdef SLAP_LIGHTWEIGHT_DISPATCHER
365 # define SLAP_SOCK_SET_SUSPEND(s) \
366 ( slap_daemon.sd_suspend[SLAP_DEVPOLL_SOCK_IX((s))] = 1 )
367 # define SLAP_SOCK_CLR_SUSPEND(s) \
368 ( slap_daemon.sd_suspend[SLAP_DEVPOLL_SOCK_IX((s))] = 0 )
369 # define SLAP_SOCK_IS_SUSPEND(s) \
370 ( slap_daemon.sd_suspend[SLAP_DEVPOLL_SOCK_IX((s))] == 1 )
371 # endif /* SLAP_LIGHTWEIGHT_DISPATCHER */
373 # define SLAP_DEVPOLL_EVENT_CLR(i, mode) (revents[(i)].events &= ~(mode))
375 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
377 /* If a Listener address is provided, store that in the sd_l array.
378 * If we can't do this add, the system is out of resources and we
381 # define SLAP_SOCK_ADD(s, l) do { \
382 Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_ADD(%d, %p)\n", (s), (l), 0 ); \
383 SLAP_DEVPOLL_SOCK_IX((s)) = slap_daemon.sd_nfds; \
384 SLAP_DEVPOLL_SOCK_LX((s)) = (l); \
385 SLAP_DEVPOLL_SOCK_FD((s)) = (s); \
386 SLAP_DEVPOLL_SOCK_EV((s)) = POLLIN; \
387 SLAP_DEVPOLL_WRITE_POLLFD((s), &SLAP_DEVPOLL_SOCK_EP((s)), 1, "ADD", 1); \
388 slap_daemon.sd_nfds++; \
391 # define SLAP_DEVPOLL_EV_LISTENER(ptr) ((ptr) != NULL)
393 # define SLAP_SOCK_DEL(s) do { \
394 int fd, index = SLAP_DEVPOLL_SOCK_IX((s)); \
395 Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_DEL(%d)\n", (s), 0, 0 ); \
396 if ( index < 0 ) break; \
397 if ( index < slap_daemon.sd_nfds - 1 ) { \
398 struct pollfd pfd = slap_daemon.sd_pollfd[index]; \
399 fd = slap_daemon.sd_pollfd[slap_daemon.sd_nfds - 1].fd; \
400 slap_daemon.sd_pollfd[index] = slap_daemon.sd_pollfd[slap_daemon.sd_nfds - 1]; \
401 slap_daemon.sd_pollfd[slap_daemon.sd_nfds - 1] = pfd; \
402 slap_daemon.sd_index[fd] = index; \
404 slap_daemon.sd_index[(s)] = -1; \
405 slap_daemon.sd_pollfd[slap_daemon.sd_nfds - 1].events = POLLREMOVE; \
406 SLAP_DEVPOLL_WRITE_POLLFD((s), &slap_daemon.sd_pollfd[slap_daemon.sd_nfds - 1], 1, "DEL", 0); \
407 slap_daemon.sd_pollfd[slap_daemon.sd_nfds - 1].events = 0; \
408 slap_daemon.sd_nfds--; \
411 # define SLAP_EVENT_CLR_READ(i) SLAP_DEVPOLL_EVENT_CLR((i), POLLIN)
412 # define SLAP_EVENT_CLR_WRITE(i) SLAP_DEVPOLL_EVENT_CLR((i), POLLOUT)
414 # define SLAP_DEVPOLL_EVENT_CHK(i, mode) (revents[(i)].events & (mode))
416 # define SLAP_EVENT_FD(i) (revents[(i)].fd)
418 # define SLAP_EVENT_IS_READ(i) SLAP_DEVPOLL_EVENT_CHK((i), POLLIN)
419 # define SLAP_EVENT_IS_WRITE(i) SLAP_DEVPOLL_EVENT_CHK((i), POLLOUT)
420 # define SLAP_EVENT_IS_LISTENER(i) SLAP_DEVPOLL_EV_LISTENER(SLAP_DEVPOLL_SOCK_LX(SLAP_EVENT_FD((i))))
421 # define SLAP_EVENT_LISTENER(i) SLAP_DEVPOLL_SOCK_LX(SLAP_EVENT_FD((i)))
423 # define SLAP_SOCK_INIT do { \
424 slap_daemon.sd_pollfd = ch_calloc( 1, \
425 ( sizeof(struct pollfd) * 2 \
427 + sizeof( Listener * ) ) * dtblsize ); \
428 slap_daemon.sd_index = (int *)&slap_daemon.sd_pollfd[ 2 * dtblsize ]; \
429 slap_daemon.sd_l = (Listener **)&slap_daemon.sd_index[ dtblsize ]; \
430 slap_daemon.sd_dpfd = open( SLAP_EVENT_FNAME, O_RDWR ); \
431 if ( slap_daemon.sd_dpfd == -1 ) { \
432 Debug( LDAP_DEBUG_ANY, "daemon: " SLAP_EVENT_FNAME ": " \
433 "open(\"" SLAP_EVENT_FNAME "\") failed errno=%d\n", \
438 for ( i = 0; i < dtblsize; i++ ) { \
439 slap_daemon.sd_pollfd[i].fd = -1; \
440 slap_daemon.sd_index[i] = -1; \
444 # define SLAP_SOCK_DESTROY do { \
445 if ( slap_daemon.sd_pollfd != NULL ) { \
446 ch_free( slap_daemon.sd_pollfd ); \
447 slap_daemon.sd_pollfd = NULL; \
448 slap_daemon.sd_index = NULL; \
449 slap_daemon.sd_l = NULL; \
450 close( slap_daemon.sd_dpfd ); \
454 # define SLAP_EVENT_DECL struct pollfd *revents
456 # define SLAP_EVENT_INIT do { \
457 revents = &slap_daemon.sd_pollfd[ dtblsize ]; \
460 # define SLAP_EVENT_WAIT(tvp, nsp) do { \
461 struct dvpoll sd_dvpoll; \
462 sd_dvpoll.dp_timeout = (tvp) ? (tvp)->tv_sec * 1000 : -1; \
463 sd_dvpoll.dp_nfds = dtblsize; \
464 sd_dvpoll.dp_fds = revents; \
465 *(nsp) = ioctl( slap_daemon.sd_dpfd, DP_POLL, &sd_dvpoll ); \
468 #else /* ! epoll && ! /dev/poll */
470 /**************************************
471 * Use select system call - select(2) *
472 **************************************/
473 # define SLAP_EVENT_FNAME "select"
476 # define SLAP_EVENTS_ARE_INDEXED 1
477 # define SLAP_EVENT_DECL fd_set readfds, writefds
479 # define SLAP_EVENT_INIT do { \
480 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) ); \
482 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) ); \
484 FD_ZERO( &writefds ); \
489 # define SLAP_SELECT_CHK_SETSIZE do { \
490 if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE; \
492 # else /* ! FD_SETSIZE */
493 # define SLAP_SELECT_CHK_SETSIZE do { ; } while (0)
494 # endif /* ! FD_SETSIZE */
496 # define SLAP_SOCK_INIT do { \
497 SLAP_SELECT_CHK_SETSIZE; \
498 FD_ZERO(&slap_daemon.sd_actives); \
499 FD_ZERO(&slap_daemon.sd_readers); \
500 FD_ZERO(&slap_daemon.sd_writers); \
503 # define SLAP_SOCK_DESTROY
505 # define SLAP_SOCK_IS_ACTIVE(fd) FD_ISSET((fd), &slap_daemon.sd_actives)
506 # define SLAP_SOCK_IS_READ(fd) FD_ISSET((fd), &slap_daemon.sd_readers)
507 # define SLAP_SOCK_IS_WRITE(fd) FD_ISSET((fd), &slap_daemon.sd_writers)
509 # define SLAP_SOCK_NOT_ACTIVE(fd) (!SLAP_SOCK_IS_ACTIVE(fd) && \
510 !SLAP_SOCK_IS_READ(fd) && !SLAP_SOCK_IS_WRITE(fd))
513 # define SLAP_SOCK_SET_READ(fd) do { \
514 if (!SLAP_SOCK_IS_READ(fd)) { FD_SET((fd), &slap_daemon.sd_readers); } \
516 # define SLAP_SOCK_SET_WRITE(fd) do { \
517 if (!SLAP_SOCK_IS_WRITE(fd)) { FD_SET((fd), &slap_daemon.sd_writers); } \
520 # define SLAP_SELECT_ADDTEST(s)
521 # define SLAP_EVENT_MAX dtblsize
522 # else /* ! HAVE_WINSOCK */
523 # define SLAP_SOCK_SET_READ(fd) FD_SET((fd), &slap_daemon.sd_readers)
524 # define SLAP_SOCK_SET_WRITE(fd) FD_SET((fd), &slap_daemon.sd_writers)
526 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
527 # define SLAP_SELECT_ADDTEST(s) do { \
528 if ((s) >= slap_daemon.sd_nfds) slap_daemon.sd_nfds = (s)+1; \
530 # endif /* ! HAVE_WINSOCK */
532 # define SLAP_SOCK_CLR_READ(fd) FD_CLR((fd), &slap_daemon.sd_readers)
533 # define SLAP_SOCK_CLR_WRITE(fd) FD_CLR((fd), &slap_daemon.sd_writers)
535 # define SLAP_SOCK_ADD(s, l) do { \
536 SLAP_SELECT_ADDTEST((s)); \
537 FD_SET((s), &slap_daemon.sd_actives); \
538 FD_SET((s), &slap_daemon.sd_readers); \
541 # define SLAP_SOCK_DEL(s) do { \
542 FD_CLR((s), &slap_daemon.sd_actives); \
543 FD_CLR((s), &slap_daemon.sd_readers); \
544 FD_CLR((s), &slap_daemon.sd_writers); \
547 # define SLAP_EVENT_IS_READ(fd) FD_ISSET((fd), &readfds)
548 # define SLAP_EVENT_IS_WRITE(fd) FD_ISSET((fd), &writefds)
550 # define SLAP_EVENT_CLR_READ(fd) FD_CLR((fd), &readfds)
551 # define SLAP_EVENT_CLR_WRITE(fd) FD_CLR((fd), &writefds)
553 # define SLAP_EVENT_WAIT(tvp, nsp) do { \
554 *(nsp) = select( SLAP_EVENT_MAX, &readfds, \
555 nwriters > 0 ? &writefds : NULL, NULL, (tvp) ); \
557 #endif /* ! epoll && ! /dev/poll */
561 * SLP related functions
565 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
566 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
567 static char** slapd_srvurls = NULL;
568 static SLPHandle slapd_hslp = 0;
569 int slapd_register_slp = 0;
570 const char *slapd_slp_attrs = NULL;
572 static SLPError slapd_slp_cookie;
575 slapd_slp_init( const char* urls )
580 slapd_srvurls = ldap_str2charray( urls, " " );
582 if ( slapd_srvurls == NULL ) return;
584 /* find and expand INADDR_ANY URLs */
585 for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
586 if ( strcmp( slapd_srvurls[i], "ldap:///" ) == 0 ) {
587 char *host = ldap_pvt_get_fqdn( NULL );
588 if ( host != NULL ) {
589 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
591 sizeof( LDAP_SRVTYPE_PREFIX ) );
592 strcpy( lutil_strcopy(slapd_srvurls[i],
593 LDAP_SRVTYPE_PREFIX ), host );
598 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0 ) {
599 char *host = ldap_pvt_get_fqdn( NULL );
600 if ( host != NULL ) {
601 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
603 sizeof( LDAPS_SRVTYPE_PREFIX ) );
604 strcpy( lutil_strcopy(slapd_srvurls[i],
605 LDAPS_SRVTYPE_PREFIX ), host );
612 /* open the SLP handle */
613 err = SLPOpen( "en", 0, &slapd_hslp );
615 if ( err != SLP_OK ) {
616 Debug( LDAP_DEBUG_CONNS, "daemon: SLPOpen() failed with %ld\n",
622 slapd_slp_deinit( void )
624 if ( slapd_srvurls == NULL ) return;
626 ldap_charray_free( slapd_srvurls );
627 slapd_srvurls = NULL;
629 /* close the SLP handle */
630 SLPClose( slapd_hslp );
639 /* return the error code in the cookie */
640 *(SLPError*)cookie = errcode;
649 if ( slapd_srvurls == NULL ) return;
651 for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
652 if ( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
653 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
654 strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
655 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
657 err = SLPReg( slapd_hslp,
659 SLP_LIFETIME_MAXIMUM,
661 (slapd_slp_attrs) ? slapd_slp_attrs : "",
666 if ( err != SLP_OK || slapd_slp_cookie != SLP_OK ) {
667 Debug( LDAP_DEBUG_CONNS,
668 "daemon: SLPReg(%s) failed with %ld, cookie = %ld\n",
669 slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
676 slapd_slp_dereg( void )
681 if ( slapd_srvurls == NULL ) return;
683 for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
684 err = SLPDereg( slapd_hslp,
689 if ( err != SLP_OK || slapd_slp_cookie != SLP_OK ) {
690 Debug( LDAP_DEBUG_CONNS,
691 "daemon: SLPDereg(%s) failed with %ld, cookie = %ld\n",
692 slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
696 #endif /* HAVE_SLP */
699 * Add a descriptor to daemon control
701 * If isactive, the descriptor is a live server session and is subject
702 * to idletimeout control. Otherwise, the descriptor is a passive
703 * listener or an outbound client session, and not subject to
704 * idletimeout. The underlying event handler may record the Listener
705 * argument to differentiate Listener's from real sessions.
708 slapd_add( ber_socket_t s, int isactive, Listener *sl )
710 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
712 assert( SLAP_SOCK_NOT_ACTIVE(s) );
714 if ( isactive ) slap_daemon.sd_nactives++;
716 SLAP_SOCK_ADD(s, sl);
718 Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr%s listener=%p\n",
719 (long) s, isactive ? " (active)" : "", (void *)sl );
721 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
723 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
725 #endif /* SLAP_LIGHTWEIGHT_DISPATCHER */
732 slapd_sd_lock( void )
734 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
741 slapd_sd_unlock( void )
743 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
747 * Remove the descriptor from daemon control
761 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
763 assert( SLAP_SOCK_IS_ACTIVE( s ));
765 if ( wasactive ) slap_daemon.sd_nactives--;
767 waswriter = SLAP_SOCK_IS_WRITE(s);
768 wasreader = SLAP_SOCK_IS_READ(s);
770 Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
772 wasreader ? "r" : "",
773 waswriter ? "w" : "" );
775 if ( waswriter ) slap_daemon.sd_nwriters--;
780 ber_sockbuf_free(sb);
782 /* If we ran out of file descriptors, we dropped a listener from
783 * the select() loop. Now that we're removing a session from our
784 * control, we can try to resume a dropped listener to use.
788 for ( i = 0; slap_listeners[i] != NULL; i++ ) {
789 Listener *lr = slap_listeners[i];
791 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
792 if ( lr->sl_sd == s ) continue;
799 /* Walked the entire list without enabling anything; emfile
800 * counter is stale. Reset it.
802 if ( slap_listeners[i] == NULL ) emfile = 0;
804 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
805 WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
809 slapd_clr_write( ber_socket_t s, int wake )
811 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
813 assert( SLAP_SOCK_IS_ACTIVE( s ));
815 if ( SLAP_SOCK_IS_WRITE( s )) {
816 SLAP_SOCK_CLR_WRITE( s );
817 slap_daemon.sd_nwriters--;
820 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
825 slapd_set_write( ber_socket_t s, int wake )
827 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
829 assert( SLAP_SOCK_IS_ACTIVE( s ));
831 if ( !SLAP_SOCK_IS_WRITE( s )) {
832 SLAP_SOCK_SET_WRITE( s );
833 slap_daemon.sd_nwriters++;
836 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
841 slapd_clr_read( ber_socket_t s, int wake )
844 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
846 if ( SLAP_SOCK_IS_ACTIVE( s )) {
847 SLAP_SOCK_CLR_READ( s );
850 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
857 slapd_set_read( ber_socket_t s, int wake )
859 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
861 assert( SLAP_SOCK_IS_ACTIVE( s ));
862 if (!SLAP_SOCK_IS_READ( s )) SLAP_SOCK_SET_READ( s );
864 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
869 slapd_close( ber_socket_t s )
871 Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
877 slap_free_listener_addresses( struct sockaddr **sal )
879 struct sockaddr **sap;
880 if (sal == NULL) return;
881 for (sap = sal; *sap != NULL; sap++) ch_free(*sap);
885 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
894 assert( exts != NULL );
895 assert( perms != NULL );
896 assert( crit != NULL );
899 for ( i = 0; exts[ i ]; i++ ) {
900 char *type = exts[ i ];
903 if ( type[ 0 ] == '!' ) {
908 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=",
909 sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 )
911 char *value = type + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
915 switch (strlen(value)) {
917 /* skip leading '0' */
918 if ( value[ 0 ] != '0' ) return LDAP_OTHER;
922 for ( j = 0; j < 3; j++) {
925 v = value[ j ] - '0';
927 if ( v < 0 || v > 7 ) return LDAP_OTHER;
934 for ( j = 1; j < 10; j++ ) {
935 static mode_t m[] = { 0,
936 S_IRUSR, S_IWUSR, S_IXUSR,
937 S_IRGRP, S_IWGRP, S_IXGRP,
938 S_IROTH, S_IWOTH, S_IXOTH
940 static char c[] = "-rwxrwxrwx";
942 if ( value[ j ] == c[ j ] ) {
945 } else if ( value[ j ] != '-' ) {
964 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
966 /* port = 0 indicates AF_LOCAL */
968 slap_get_listener_addresses(
971 struct sockaddr ***sal )
973 struct sockaddr **sap;
977 *sal = ch_malloc(2 * sizeof(void *));
978 if (*sal == NULL) return -1;
981 *sap = ch_malloc(sizeof(struct sockaddr_un));
982 if (*sap == NULL) goto errexit;
986 (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) )
988 Debug( LDAP_DEBUG_ANY,
989 "daemon: domain socket path (%s) too long in URL",
994 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
995 (*sap)->sa_family = AF_LOCAL;
996 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
998 #endif /* LDAP_PF_LOCAL */
1000 #ifdef HAVE_GETADDRINFO
1001 struct addrinfo hints, *res, *sai;
1005 memset( &hints, '\0', sizeof(hints) );
1006 hints.ai_flags = AI_PASSIVE;
1007 hints.ai_socktype = SOCK_STREAM;
1008 hints.ai_family = slap_inet4or6;
1009 snprintf(serv, sizeof serv, "%d", port);
1011 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
1012 Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo() failed: %s\n",
1013 AC_GAI_STRERROR(err), 0, 0);
1018 for (n=2; (sai = sai->ai_next) != NULL; n++) {
1021 *sal = ch_calloc(n, sizeof(void *));
1022 if (*sal == NULL) return -1;
1027 for ( sai=res; sai; sai=sai->ai_next ) {
1028 if( sai->ai_addr == NULL ) {
1029 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
1030 "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
1035 switch (sai->ai_family) {
1036 # ifdef LDAP_PF_INET6
1038 *sap = ch_malloc(sizeof(struct sockaddr_in6));
1043 *(struct sockaddr_in6 *)*sap =
1044 *((struct sockaddr_in6 *)sai->ai_addr);
1046 # endif /* LDAP_PF_INET6 */
1048 *sap = ch_malloc(sizeof(struct sockaddr_in));
1053 *(struct sockaddr_in *)*sap =
1054 *((struct sockaddr_in *)sai->ai_addr);
1062 (*sap)->sa_family = sai->ai_family;
1070 #else /* ! HAVE_GETADDRINFO */
1073 struct hostent *he = NULL;
1075 if ( host == NULL ) {
1076 in.s_addr = htonl(INADDR_ANY);
1078 } else if ( !inet_aton( host, &in ) ) {
1079 he = gethostbyname( host );
1081 Debug( LDAP_DEBUG_ANY,
1082 "daemon: invalid host %s", host, 0, 0);
1085 for (n = 0; he->h_addr_list[n]; n++) /* empty */;
1088 *sal = ch_malloc((n+1) * sizeof(void *));
1089 if (*sal == NULL) return -1;
1092 for ( i = 0; i<n; i++ ) {
1093 sap[i] = ch_malloc(sizeof(struct sockaddr_in));
1094 if (*sap == NULL) goto errexit;
1096 (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
1097 sap[i]->sa_family = AF_INET;
1098 ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
1099 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr,
1100 he ? (struct in_addr *)he->h_addr_list[i] : &in,
1101 sizeof(struct in_addr) );
1104 #endif /* ! HAVE_GETADDRINFO */
1110 slap_free_listener_addresses(*sal);
1124 unsigned short port;
1125 int err, addrlen = 0;
1126 struct sockaddr **sal, **psal;
1127 int socktype = SOCK_STREAM; /* default to COTS */
1129 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
1134 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
1136 rc = ldap_url_parse( url, &lud );
1138 if( rc != LDAP_URL_SUCCESS ) {
1139 Debug( LDAP_DEBUG_ANY,
1140 "daemon: listen URL \"%s\" parse error=%d\n",
1145 l.sl_url.bv_val = NULL;
1147 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1149 #endif /* SLAP_LIGHTWEIGHT_DISPATCHER */
1152 if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
1153 Debug( LDAP_DEBUG_ANY, "daemon: TLS not supported (%s)\n",
1155 ldap_free_urldesc( lud );
1159 if(! lud->lud_port ) lud->lud_port = LDAP_PORT;
1161 #else /* HAVE_TLS */
1162 l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
1164 if(! lud->lud_port ) {
1165 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
1167 #endif /* HAVE_TLS */
1169 port = (unsigned short) lud->lud_port;
1171 tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
1172 if ( tmp == LDAP_PROTO_IPC ) {
1173 #ifdef LDAP_PF_LOCAL
1174 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
1175 err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
1177 err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
1179 #else /* ! LDAP_PF_LOCAL */
1181 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
1183 ldap_free_urldesc( lud );
1185 #endif /* ! LDAP_PF_LOCAL */
1187 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
1188 || strcmp(lud->lud_host, "*") == 0 )
1190 err = slap_get_listener_addresses(NULL, port, &sal);
1192 err = slap_get_listener_addresses(lud->lud_host, port, &sal);
1196 #ifdef LDAP_CONNECTIONLESS
1197 l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
1198 #endif /* LDAP_CONNECTIONLESS */
1200 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
1201 if ( lud->lud_exts ) {
1202 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
1204 l.sl_perms = S_IRWXU | S_IRWXO;
1206 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
1208 ldap_free_urldesc( lud );
1209 if ( err ) return -1;
1211 /* If we got more than one address returned, we need to make space
1212 * for it in the slap_listeners array.
1214 for ( num=0; sal[num]; num++ ) /* empty */;
1216 *listeners += num-1;
1217 slap_listeners = ch_realloc( slap_listeners,
1218 (*listeners + 1) * sizeof(Listener *) );
1222 while ( *sal != NULL ) {
1224 switch( (*sal)->sa_family ) {
1228 #ifdef LDAP_PF_INET6
1232 #endif /* LDAP_PF_INET6 */
1233 #ifdef LDAP_PF_LOCAL
1237 #endif /* LDAP_PF_LOCAL */
1243 #ifdef LDAP_CONNECTIONLESS
1244 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
1245 #endif /* LDAP_CONNECTIONLESS */
1247 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
1248 if ( l.sl_sd == AC_SOCKET_INVALID ) {
1249 int err = sock_errno();
1250 Debug( LDAP_DEBUG_ANY,
1251 "daemon: %s socket() failed errno=%d (%s)\n",
1252 af, err, sock_errstr(err) );
1257 #ifndef HAVE_WINSOCK
1258 if ( l.sl_sd >= dtblsize ) {
1259 Debug( LDAP_DEBUG_ANY,
1260 "daemon: listener descriptor %ld is too great %ld\n",
1261 (long) l.sl_sd, (long) dtblsize, 0 );
1262 tcp_close( l.sl_sd );
1266 #endif /* ! HAVE_WINSOCK */
1268 #ifdef LDAP_PF_LOCAL
1269 if ( (*sal)->sa_family == AF_LOCAL ) {
1270 unlink( ((struct sockaddr_un *)*sal)->sun_path );
1272 #endif /* LDAP_PF_LOCAL */
1275 /* enable address reuse */
1277 rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
1278 (char *) &tmp, sizeof(tmp) );
1279 if ( rc == AC_SOCKET_ERROR ) {
1280 int err = sock_errno();
1281 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1282 "setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
1283 (long) l.sl_sd, err, sock_errstr(err) );
1285 #endif /* SO_REUSEADDR */
1288 switch( (*sal)->sa_family ) {
1290 addrlen = sizeof(struct sockaddr_in);
1292 #ifdef LDAP_PF_INET6
1295 /* Try to use IPv6 sockets for IPv6 only */
1297 rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
1298 (char *) &tmp, sizeof(tmp) );
1299 if ( rc == AC_SOCKET_ERROR ) {
1300 int err = sock_errno();
1301 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1302 "setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
1303 (long) l.sl_sd, err, sock_errstr(err) );
1305 #endif /* IPV6_V6ONLY */
1306 addrlen = sizeof(struct sockaddr_in6);
1308 #endif /* LDAP_PF_INET6 */
1310 #ifdef LDAP_PF_LOCAL
1315 setsockopt( l.sl_sd, 0, LOCAL_CREDS, &one, sizeof( one ) );
1317 #endif /* LOCAL_CREDS */
1319 addrlen = sizeof( struct sockaddr_un );
1321 #endif /* LDAP_PF_LOCAL */
1324 #ifdef LDAP_PF_LOCAL
1325 /* create socket with all permissions set for those systems
1326 * that honor permissions on sockets (e.g. Linux); typically,
1327 * only write is required. To exploit filesystem permissions,
1328 * place the socket in a directory and use directory's
1329 * permissions. Need write perms to the directory to
1330 * create/unlink the socket; likely need exec perms to access
1331 * the socket (ITS#4709) */
1335 if ( (*sal)->sa_family == AF_LOCAL ) {
1336 old_umask = umask( 0 );
1338 #endif /* LDAP_PF_LOCAL */
1339 rc = bind( l.sl_sd, *sal, addrlen );
1340 #ifdef LDAP_PF_LOCAL
1341 if ( (*sal)->sa_family == AF_LOCAL ) {
1345 #endif /* LDAP_PF_LOCAL */
1348 Debug( LDAP_DEBUG_ANY,
1349 "daemon: bind(%ld) failed errno=%d (%s)\n",
1350 (long)l.sl_sd, err, sock_errstr( err ) );
1351 tcp_close( l.sl_sd );
1356 switch ( (*sal)->sa_family ) {
1357 #ifdef LDAP_PF_LOCAL
1359 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
1360 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
1361 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
1362 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
1365 #endif /* LDAP_PF_LOCAL */
1369 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1370 char addr[INET_ADDRSTRLEN];
1371 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
1372 addr, sizeof(addr) );
1374 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1375 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
1376 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1377 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
1379 ber_memalloc( sizeof("IP=255.255.255.255:65535") );
1380 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
1382 s != NULL ? s : SLAP_STRING_UNKNOWN, port );
1383 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1386 #ifdef LDAP_PF_INET6
1388 char addr[INET6_ADDRSTRLEN];
1389 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
1391 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
1392 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
1393 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
1394 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
1396 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1398 #endif /* LDAP_PF_INET6 */
1401 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
1402 (int) (*sal)->sa_family, 0, 0 );
1406 AC_MEMCPY(&l.sl_sa, *sal, addrlen);
1407 ber_str2bv( url, 0, 1, &l.sl_url);
1408 li = ch_malloc( sizeof( Listener ) );
1410 slap_listeners[*cur] = li;
1415 slap_free_listener_addresses(psal);
1417 if ( l.sl_url.bv_val == NULL ) {
1418 Debug( LDAP_DEBUG_TRACE,
1419 "slap_open_listener: failed on %s\n", url, 0, 0 );
1423 Debug( LDAP_DEBUG_TRACE, "daemon: listener initialized %s\n",
1424 l.sl_url.bv_val, 0, 0 );
1428 static int sockinit(void);
1429 static int sockdestroy(void);
1432 slapd_daemon_init( const char *urls )
1437 Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
1438 urls ? urls : "<null>", 0, 0 );
1440 ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1442 ldap_pvt_thread_mutex_init( &slap_daemon.sd_tcpd_mutex );
1443 #endif /* TCP Wrappers */
1445 if( (rc = sockinit()) != 0 ) return rc;
1448 dtblsize = sysconf( _SC_OPEN_MAX );
1449 #elif HAVE_GETDTABLESIZE
1450 dtblsize = getdtablesize();
1451 #else /* ! HAVE_SYSCONF && ! HAVE_GETDTABLESIZE */
1452 dtblsize = FD_SETSIZE;
1453 #endif /* ! HAVE_SYSCONF && ! HAVE_GETDTABLESIZE */
1455 /* open a pipe (or something equivalent connected to itself).
1456 * we write a byte on this fd whenever we catch a signal. The main
1457 * loop will be select'ing on this socket, and will wake up when
1458 * this byte arrives.
1460 if( (rc = lutil_pair( wake_sds )) < 0 ) {
1461 Debug( LDAP_DEBUG_ANY,
1462 "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
1468 if( urls == NULL ) urls = "ldap:///";
1470 u = ldap_str2charray( urls, " " );
1472 if( u == NULL || u[0] == NULL ) {
1473 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1476 ldap_charray_free( u );
1480 for( i=0; u[i] != NULL; i++ ) {
1481 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1486 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1488 ldap_charray_free( u );
1492 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1494 slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1496 for(n = 0, j = 0; u[n]; n++ ) {
1497 if ( slap_open_listener( u[n], &i, &j ) ) {
1498 ldap_charray_free( u );
1502 slap_listeners[j] = NULL;
1504 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1509 if( slapd_register_slp ) {
1510 slapd_slp_init( urls );
1513 #endif /* HAVE_SLP */
1515 ldap_charray_free( u );
1522 slapd_daemon_destroy( void )
1524 connections_destroy();
1525 tcp_close( wake_sds[1] );
1526 tcp_close( wake_sds[0] );
1530 if( slapd_register_slp ) {
1534 #endif /* HAVE_SLP */
1537 ldap_pvt_thread_mutex_destroy( &slap_daemon.sd_tcpd_mutex );
1538 #endif /* TCP Wrappers */
1540 ldap_pvt_thread_mutex_destroy( &slap_daemon.sd_mutex );
1551 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1552 Listener *lr = slap_listeners[l];
1554 if ( lr->sl_sd != AC_SOCKET_INVALID ) {
1555 if ( remove ) slapd_remove( lr->sl_sd, NULL, 0, 0, 0 );
1557 #ifdef LDAP_PF_LOCAL
1558 if ( lr->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1559 unlink( lr->sl_sa.sa_un_addr.sun_path );
1561 #endif /* LDAP_PF_LOCAL */
1563 slapd_close( lr->sl_sd );
1566 if ( lr->sl_url.bv_val ) {
1567 ber_memfree( lr->sl_url.bv_val );
1570 if ( lr->sl_name.bv_val ) {
1571 ber_memfree( lr->sl_name.bv_val );
1575 slap_listeners[l] = NULL;
1586 ber_socklen_t len = sizeof(from);
1589 struct berval authid = BER_BVNULL;
1590 #ifdef SLAPD_RLOOKUPS
1591 char hbuf[NI_MAXHOST];
1592 #endif /* SLAPD_RLOOKUPS */
1594 char *dnsname = NULL;
1595 char *peeraddr = NULL;
1596 #ifdef LDAP_PF_LOCAL
1597 char peername[MAXPATHLEN + sizeof("PATH=")];
1598 #elif defined(LDAP_PF_INET6)
1599 char peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1600 #else /* ! LDAP_PF_LOCAL && ! LDAP_PF_INET6 */
1601 char peername[sizeof("IP=255.255.255.255:65336")];
1602 #endif /* LDAP_PF_LOCAL */
1604 Debug( LDAP_DEBUG_TRACE,
1605 ">>> slap_listener(%s)\n",
1606 sl->sl_url.bv_val, 0, 0 );
1610 #ifdef LDAP_CONNECTIONLESS
1611 if ( sl->sl_is_udp ) return 1;
1612 #endif /* LDAP_CONNECTIONLESS */
1614 # ifdef LDAP_PF_LOCAL
1615 /* FIXME: apparently accept doesn't fill
1616 * the sun_path sun_path member */
1617 from.sa_un_addr.sun_path[0] = '\0';
1618 # endif /* LDAP_PF_LOCAL */
1620 s = accept( sl->sl_sd, (struct sockaddr *) &from, &len );
1622 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1623 /* Resume the listener FD to allow concurrent-processing of
1624 * additional incoming connections.
1628 #endif /* SLAP_LIGHTWEIGHT_DISPATCHER */
1630 if ( s == AC_SOCKET_INVALID ) {
1631 int err = sock_errno();
1642 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1644 /* Stop listening until an existing session closes */
1646 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1649 Debug( LDAP_DEBUG_ANY,
1650 "daemon: accept(%ld) failed errno=%d (%s)\n",
1651 (long) sl->sl_sd, err, sock_errstr(err) );
1652 ldap_pvt_thread_yield();
1656 #ifndef HAVE_WINSOCK
1657 /* make sure descriptor number isn't too great */
1658 if ( s >= dtblsize ) {
1659 Debug( LDAP_DEBUG_ANY,
1660 "daemon: %ld beyond descriptor table size %ld\n",
1661 (long) s, (long) dtblsize, 0 );
1664 ldap_pvt_thread_yield();
1667 #endif /* ! HAVE_WINSOCK */
1670 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1671 /* newly accepted stream should not be in any of the FD SETS */
1672 assert( SLAP_SOCK_NOT_ACTIVE( s ));
1673 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1674 #endif /* LDAP_DEBUG */
1676 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1677 #ifdef LDAP_PF_LOCAL
1678 /* for IPv4 and IPv6 sockets only */
1679 if ( from.sa_addr.sa_family != AF_LOCAL )
1680 #endif /* LDAP_PF_LOCAL */
1685 /* enable keep alives */
1687 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1688 (char *) &tmp, sizeof(tmp) );
1689 if ( rc == AC_SOCKET_ERROR ) {
1690 int err = sock_errno();
1691 Debug( LDAP_DEBUG_ANY,
1692 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1693 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1695 #endif /* SO_KEEPALIVE */
1697 /* enable no delay */
1699 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1700 (char *)&tmp, sizeof(tmp) );
1701 if ( rc == AC_SOCKET_ERROR ) {
1702 int err = sock_errno();
1703 Debug( LDAP_DEBUG_ANY,
1704 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1705 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1707 #endif /* TCP_NODELAY */
1709 #endif /* SO_KEEPALIVE || TCP_NODELAY */
1711 Debug( LDAP_DEBUG_CONNS,
1712 "daemon: listen=%ld, new connection on %ld\n",
1713 (long) sl->sl_sd, (long) s, 0 );
1715 switch ( from.sa_addr.sa_family ) {
1716 # ifdef LDAP_PF_LOCAL
1718 /* FIXME: apparently accept doesn't fill
1719 * the sun_path sun_path member */
1720 if ( from.sa_un_addr.sun_path[0] == '\0' ) {
1721 AC_MEMCPY( from.sa_un_addr.sun_path,
1722 sl->sl_sa.sa_un_addr.sun_path,
1723 sizeof( from.sa_un_addr.sun_path ) );
1726 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1732 if( getpeereid( s, &uid, &gid ) == 0 ) {
1733 authid.bv_val = ch_malloc(
1734 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1735 "cn=peercred,cn=external,cn=auth" ) + 1 );
1736 authid.bv_len = sprintf( authid.bv_val,
1737 "gidNumber=%d+uidNumber=%d,"
1738 "cn=peercred,cn=external,cn=auth",
1739 (int) gid, (int) uid );
1740 assert( authid.bv_len <=
1741 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1742 "cn=peercred,cn=external,cn=auth" ) );
1747 #endif /* LDAP_PF_LOCAL */
1749 # ifdef LDAP_PF_INET6
1751 if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1752 peeraddr = inet_ntoa( *((struct in_addr *)
1753 &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1754 sprintf( peername, "IP=%s:%d",
1755 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1756 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1758 char addr[INET6_ADDRSTRLEN];
1760 peeraddr = (char *) inet_ntop( AF_INET6,
1761 &from.sa_in6_addr.sin6_addr,
1762 addr, sizeof addr );
1763 sprintf( peername, "IP=%s %d",
1764 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1765 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1768 # endif /* LDAP_PF_INET6 */
1771 peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1772 sprintf( peername, "IP=%s:%d",
1773 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1774 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1782 if ( ( from.sa_addr.sa_family == AF_INET )
1783 #ifdef LDAP_PF_INET6
1784 || ( from.sa_addr.sa_family == AF_INET6 )
1785 #endif /* LDAP_PF_INET6 */
1789 #ifdef SLAPD_RLOOKUPS
1790 if ( use_reverse_lookup ) {
1792 if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
1793 sizeof(hbuf), &herr ) == 0) {
1794 ldap_pvt_str2lower( hbuf );
1798 #endif /* SLAPD_RLOOKUPS */
1803 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_tcpd_mutex );
1804 rc = hosts_ctl("slapd",
1805 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1806 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1807 SLAP_STRING_UNKNOWN );
1808 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_tcpd_mutex );
1811 Statslog( LDAP_DEBUG_STATS,
1812 "fd=%ld DENIED from %s (%s)\n",
1814 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1815 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1821 #endif /* HAVE_TCPD */
1824 id = connection_init(s, sl,
1825 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1828 sl->sl_is_tls ? CONN_IS_TLS : 0,
1829 #else /* ! HAVE_TLS */
1831 #endif /* ! HAVE_TLS */
1833 authid.bv_val ? &authid : NULL );
1835 if( authid.bv_val ) ch_free(authid.bv_val);
1838 Debug( LDAP_DEBUG_ANY,
1839 "daemon: connection_init(%ld, %s, %s) failed.\n",
1840 (long) s, peername, sl->sl_name.bv_val );
1845 Statslog( LDAP_DEBUG_STATS,
1846 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1847 id, (long) s, peername, sl->sl_name.bv_val,
1853 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1855 slap_listener_thread(
1860 Listener *sl = (Listener *)ptr;
1862 rc = slap_listener( sl );
1864 if( rc != LDAP_SUCCESS ) {
1865 Debug( LDAP_DEBUG_ANY,
1866 "slap_listener_thread(%s): failed err=%d",
1867 sl->sl_url.bv_val, rc, 0 );
1874 slap_listener_activate(
1879 Debug( LDAP_DEBUG_TRACE, "slap_listener_activate(%d): %s\n",
1880 sl->sl_sd, sl->sl_busy ? "busy" : "", 0 );
1884 rc = ldap_pvt_thread_pool_submit( &connection_pool,
1885 slap_listener_thread, (void *) sl );
1888 Debug( LDAP_DEBUG_ANY,
1889 "listener_activate(%d): submit failed (%d)\n",
1894 #endif /* SLAP_LIGHTWEIGHT_DISPATCHER */
1901 time_t last_idle_check = 0;
1902 struct timeval idle;
1905 #define SLAPD_IDLE_CHECK_LIMIT 4
1907 if ( global_idletimeout > 0 ) {
1908 last_idle_check = slap_get_time();
1909 /* Set the select timeout.
1910 * Don't just truncate, preserve the fractions of
1911 * seconds to prevent sleeping for zero time.
1913 idle.tv_sec = global_idletimeout / SLAPD_IDLE_CHECK_LIMIT;
1914 idle.tv_usec = global_idletimeout - \
1915 ( idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT );
1916 idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
1922 slapd_add( wake_sds[0], 0, NULL );
1924 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1925 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
1927 #ifdef LDAP_CONNECTIONLESS
1928 /* Since this is connectionless, the data port is the
1929 * listening port. The listen() and accept() calls
1932 if ( slap_listeners[l]->sl_is_udp )
1934 #endif /* LDAP_CONNECTIONLESS */
1936 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN_BACKLOG ) == -1 ) {
1937 int err = sock_errno();
1939 #ifdef LDAP_PF_INET6
1940 /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1941 * we are already listening to in6addr_any, then we want to ignore
1942 * this and continue.
1944 if ( err == EADDRINUSE ) {
1946 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1947 struct sockaddr_in6 sa6;
1949 if ( sa.sin_family == AF_INET &&
1950 sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1951 for ( i = 0 ; i < l; i++ ) {
1952 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1953 if ( sa6.sin6_family == AF_INET6 &&
1954 !memcmp( &sa6.sin6_addr, &in6addr_any,
1955 sizeof(struct in6_addr) ) )
1962 /* We are already listening to in6addr_any */
1963 Debug( LDAP_DEBUG_CONNS,
1964 "daemon: Attempt to listen to 0.0.0.0 failed, "
1965 "already listening on ::, assuming IPv4 included\n",
1967 slapd_close( slap_listeners[l]->sl_sd );
1968 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1973 #endif /* LDAP_PF_INET6 */
1974 Debug( LDAP_DEBUG_ANY,
1975 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1976 slap_listeners[l]->sl_url.bv_val, err,
1981 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
1982 /* make the listening socket non-blocking */
1983 if ( ber_pvt_socket_set_nonblock( slap_listeners[l]->sl_sd, 1 ) < 0 ) {
1984 Debug( LDAP_DEBUG_ANY, "slapd_daemon_task: "
1985 "set nonblocking on a listening socket failed\n",
1990 #endif /* SLAP_LIGHTWEIGHT_DISPATCHER */
1992 slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l] );
1995 #ifdef HAVE_NT_SERVICE_MANAGER
1996 if ( started_event != NULL ) {
1997 ldap_pvt_thread_cond_signal( &started_event );
1999 #endif /* HAVE_NT_SERVICE_MANAGER */
2001 #ifdef SLAP_SEM_LOAD_CONTROL
2003 * initialize count and lazyness of a semaphore
2005 (void) ldap_lazy_sem_init(
2006 SLAP_MAX_WORKER_THREADS + 4 /* max workers + margin */,
2008 #endif /* SLAP_SEM_LOAD_CONTROL */
2010 /* initialization complete. Here comes the loop. */
2012 while ( !slapd_shutdown ) {
2017 #if SLAP_EVENTS_ARE_INDEXED
2018 ber_socket_t nrfds, nwfds;
2019 #endif /* SLAP_EVENTS_ARE_INDEXED */
2020 #define SLAPD_EBADF_LIMIT 16
2027 struct timeval *tvp;
2033 now = slap_get_time();
2035 if ( ( global_idletimeout > 0 ) &&
2036 difftime( last_idle_check +
2037 global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 )
2039 connections_timeout_idle( now );
2040 last_idle_check = now;
2045 if ( slapd_gentle_shutdown ) {
2046 ber_socket_t active;
2048 if ( slapd_gentle_shutdown == 1 ) {
2050 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
2051 close_listeners( 1 );
2052 frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
2053 LDAP_STAILQ_FOREACH(be, &backendDB, be_next) {
2054 be->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
2056 slapd_gentle_shutdown = 2;
2059 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
2060 active = slap_daemon.sd_nactives;
2061 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
2062 if ( active == 0 ) {
2070 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
2072 nwriters = slap_daemon.sd_nwriters;
2074 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2075 Listener *lr = slap_listeners[l];
2077 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
2079 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2080 if ( lr->sl_mute || lr->sl_busy )
2081 #else /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2083 #endif /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2085 SLAP_SOCK_CLR_READ( lr->sl_sd );
2087 SLAP_SOCK_SET_READ( lr->sl_sd );
2093 nfds = SLAP_EVENT_MAX;
2095 if ( global_idletimeout && slap_daemon.sd_nactives ) at = 1;
2097 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
2100 #if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
2101 && ( tv.tv_sec || tv.tv_usec )
2102 #endif /* HAVE_YIELDING_SELECT || NO_THREADS */
2110 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
2111 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
2112 while ( rtask && cat.tv_sec && cat.tv_sec <= now ) {
2113 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
2114 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
2116 ldap_pvt_runqueue_runtask( &slapd_rq, rtask );
2117 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
2118 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
2119 ldap_pvt_thread_pool_submit( &connection_pool,
2120 rtask->routine, (void *) rtask );
2121 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
2123 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
2125 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
2127 if ( rtask && cat.tv_sec ) {
2128 /* NOTE: diff __should__ always be >= 0,
2129 * AFAI understand; however (ITS#4872),
2130 * time_t might be unsigned in some systems,
2131 * while difftime() returns a double */
2132 double diff = difftime( cat.tv_sec, now );
2136 if ( tvp == NULL || diff < tv.tv_sec ) {
2143 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2144 Listener *lr = slap_listeners[l];
2146 if ( lr->sl_sd == AC_SOCKET_INVALID ) {
2150 if ( lr->sl_mute ) {
2151 Debug( LDAP_DEBUG_CONNS,
2152 "daemon: " SLAP_EVENT_FNAME ": "
2153 "listen=%d muted\n",
2158 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2159 if ( lr->sl_busy ) {
2160 Debug( LDAP_DEBUG_CONNS,
2161 "daemon: " SLAP_EVENT_FNAME ": "
2166 #endif /* SLAP_LIGHTWEIGHT_DISPATCHER */
2168 Debug( LDAP_DEBUG_CONNS,
2169 "daemon: " SLAP_EVENT_FNAME ": "
2170 "listen=%d active_threads=%d tvp=%s\n",
2171 lr->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
2174 SLAP_EVENT_WAIT( tvp, &ns );
2176 case -1: { /* failure - try again */
2177 int err = sock_errno();
2179 if ( err != EINTR ) {
2182 /* Don't log unless we got it twice in a row */
2183 if ( !( ebadf & 1 ) ) {
2184 Debug( LDAP_DEBUG_ANY,
2190 sock_errstr( err ) );
2192 if ( ebadf >= SLAPD_EBADF_LIMIT ) {
2199 case 0: /* timeout - let threads run */
2201 #ifndef HAVE_YIELDING_SELECT
2202 Debug( LDAP_DEBUG_CONNS, "daemon: " SLAP_EVENT_FNAME
2203 "timeout - yielding\n",
2206 ldap_pvt_thread_yield();
2207 #endif /* ! HAVE_YIELDING_SELECT */
2210 default: /* something happened - deal with it */
2211 if ( slapd_shutdown ) continue;
2214 Debug( LDAP_DEBUG_CONNS,
2215 "daemon: activity on %d descriptor%s\n",
2216 ns, ns != 1 ? "s" : "", 0 );
2220 #if SLAP_EVENTS_ARE_INDEXED
2221 if ( SLAP_EVENT_IS_READ( wake_sds[0] ) ) {
2223 SLAP_EVENT_CLR_READ( wake_sds[0] );
2225 tcp_read( wake_sds[0], c, sizeof(c) );
2226 Debug( LDAP_DEBUG_CONNS, "daemon: waked\n", 0, 0, 0 );
2230 /* The event slot equals the descriptor number - this is
2231 * true for Unix select and poll. We treat Windows select
2232 * like this too, even though it's a kludge.
2234 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2237 if ( ns <= 0 ) break;
2238 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
2239 #ifdef LDAP_CONNECTIONLESS
2240 if ( slap_listeners[l]->sl_is_udp ) continue;
2241 #endif /* LDAP_CONNECTIONLESS */
2242 if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd ) ) continue;
2245 SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
2246 SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
2249 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2250 rc = slap_listener_activate( slap_listeners[l] );
2251 #else /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2252 rc = slap_listener( slap_listeners[l] );
2253 #endif /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2256 /* bypass the following tests if no descriptors left */
2258 #ifndef HAVE_YIELDING_SELECT
2259 ldap_pvt_thread_yield();
2260 #endif /* HAVE_YIELDING_SELECT */
2264 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
2266 nrfds = readfds.fd_count;
2267 nwfds = writefds.fd_count;
2268 for ( i = 0; i < readfds.fd_count; i++ ) {
2269 Debug( LDAP_DEBUG_CONNS, " %d%s",
2270 readfds.fd_array[i], "r", 0 );
2272 for ( i = 0; i < writefds.fd_count; i++ ) {
2273 Debug( LDAP_DEBUG_CONNS, " %d%s",
2274 writefds.fd_array[i], "w", 0 );
2277 #else /* ! HAVE_WINSOCK */
2280 for ( i = 0; i < nfds; i++ ) {
2283 r = SLAP_EVENT_IS_READ( i );
2284 /* writefds was not initialized if nwriters was zero */
2285 w = nwriters ? SLAP_EVENT_IS_WRITE( i ) : 0;
2287 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
2288 r ? "r" : "", w ? "w" : "" );
2298 if ( ns <= 0 ) break;
2300 #endif /* ! HAVE_WINSOCK */
2301 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2303 /* loop through the writers */
2304 for ( i = 0; nwfds > 0; i++ ) {
2307 wd = writefds.fd_array[i];
2308 #else /* ! HAVE_WINSOCK */
2309 if ( ! SLAP_EVENT_IS_WRITE( i ) ) continue;
2311 #endif /* ! HAVE_WINSOCK */
2313 SLAP_EVENT_CLR_WRITE( wd );
2316 Debug( LDAP_DEBUG_CONNS,
2317 "daemon: write active on %d\n",
2321 * NOTE: it is possible that the connection was closed
2322 * and that the stream is now inactive.
2323 * connection_write() must validate the stream is still
2326 * ITS#4338: if the stream is invalid, there is no need to
2327 * close it here. It has already been closed in connection.c.
2329 if ( connection_write( wd ) < 0 ) {
2330 if ( SLAP_EVENT_IS_READ( wd ) ) {
2331 SLAP_EVENT_CLR_READ( (unsigned) wd );
2337 for ( i = 0; nrfds > 0; i++ ) {
2340 rd = readfds.fd_array[i];
2341 #else /* ! HAVE_WINSOCK */
2342 if ( ! SLAP_EVENT_IS_READ( i ) ) continue;
2344 #endif /* ! HAVE_WINSOCK */
2345 SLAP_EVENT_CLR_READ( rd );
2348 Debug ( LDAP_DEBUG_CONNS,
2349 "daemon: read activity on %d\n", rd, 0, 0 );
2351 * NOTE: it is possible that the connection was closed
2352 * and that the stream is now inactive.
2353 * connection_read() must valid the stream is still
2357 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2358 connection_read_activate( rd );
2359 #else /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2360 connection_read( rd );
2361 #endif /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2363 #else /* !SLAP_EVENTS_ARE_INDEXED */
2365 /* The events are returned in an arbitrary list. This is true
2366 * for /dev/poll, epoll and kqueue. In order to prioritize things
2367 * so that we can handle wake_sds first, listeners second, and then
2368 * all other connections last (as we do for select), we would need
2369 * to use multiple event handles and cascade them.
2371 * That seems like a bit of hassle. So the wake_sds check has been
2372 * skipped. For epoll and kqueue we can associate arbitrary data with
2373 * an event, so we could use pointers to the listener structure
2374 * instead of just the file descriptor. For /dev/poll we have to
2375 * search the listeners array for a matching descriptor.
2377 * We now handle wake events when we see them; they are not given
2381 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
2383 for ( i = 0; i < ns; i++ ) {
2386 /* Don't log listener events */
2387 if ( SLAP_EVENT_IS_LISTENER( i )
2388 #ifdef LDAP_CONNECTIONLESS
2389 && !( (SLAP_EVENT_LISTENER( i ))->sl_is_udp )
2390 #endif /* LDAP_CONNECTIONLESS */
2396 /* Don't log internal wake events */
2397 if ( SLAP_EVENT_FD( i ) == wake_sds[0] ) continue;
2399 r = SLAP_EVENT_IS_READ( i );
2400 w = SLAP_EVENT_IS_WRITE( i );
2402 Debug( LDAP_DEBUG_CONNS, " %d%s%s", SLAP_EVENT_FD(i),
2403 r ? "r" : "", w ? "w" : "" );
2406 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2407 #endif /* LDAP_DEBUG */
2409 for ( i = 0; i < ns; i++ ) {
2412 if ( SLAP_EVENT_IS_LISTENER( i ) ) {
2413 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2414 rc = slap_listener_activate( SLAP_EVENT_LISTENER( i ) );
2415 #else /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2416 rc = slap_listener( SLAP_EVENT_LISTENER( i ) );
2417 #endif /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2420 /* If we found a regular listener, rc is now zero, and we
2421 * can skip the data portion. But if it was a UDP listener
2422 * then rc is still 1, and we want to handle the data.
2425 fd = SLAP_EVENT_FD( i );
2427 /* Handle wake events */
2428 if ( fd == wake_sds[0] ) {
2431 tcp_read( wake_sds[0], c, sizeof(c) );
2435 if ( SLAP_EVENT_IS_WRITE( i ) ) {
2436 Debug( LDAP_DEBUG_CONNS,
2437 "daemon: write active on %d\n",
2440 SLAP_EVENT_CLR_WRITE( i );
2443 * NOTE: it is possible that the connection was closed
2444 * and that the stream is now inactive.
2445 * connection_write() must valid the stream is still
2448 if ( connection_write( fd ) < 0 ) {
2452 /* If event is a read */
2453 if ( SLAP_EVENT_IS_READ( i ) ) {
2454 Debug( LDAP_DEBUG_CONNS,
2455 "daemon: read active on %d\n",
2458 SLAP_EVENT_CLR_READ( i );
2459 #ifdef SLAP_LIGHTWEIGHT_DISPATCHER
2460 connection_read_activate( fd );
2461 #else /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2463 * NOTE: it is possible that the connection was closed
2464 * and that the stream is now inactive.
2465 * connection_read() must valid the stream is still
2468 connection_read( fd );
2469 #endif /* ! SLAP_LIGHTWEIGHT_DISPATCHER */
2471 Debug( LDAP_DEBUG_CONNS,
2472 "daemon: hangup on %d\n", fd, 0, 0 );
2476 #endif /* SLAP_EVENTS_ARE_INDEXED */
2478 #ifndef HAVE_YIELDING_SELECT
2479 ldap_pvt_thread_yield();
2480 #endif /* ! HAVE_YIELDING_SELECT */
2483 if ( slapd_shutdown == 1 ) {
2484 Debug( LDAP_DEBUG_ANY,
2485 "daemon: shutdown requested and initiated.\n",
2488 } else if ( slapd_shutdown == 2 ) {
2489 #ifdef HAVE_NT_SERVICE_MANAGER
2490 Debug( LDAP_DEBUG_ANY,
2491 "daemon: shutdown initiated by Service Manager.\n",
2493 #else /* !HAVE_NT_SERVICE_MANAGER */
2494 Debug( LDAP_DEBUG_ANY,
2495 "daemon: abnormal condition, shutdown initiated.\n",
2497 #endif /* !HAVE_NT_SERVICE_MANAGER */
2499 Debug( LDAP_DEBUG_ANY,
2500 "daemon: no active streams, shutdown initiated.\n",
2504 if ( slapd_gentle_shutdown != 2 ) close_listeners ( 0 );
2506 if ( !slapd_gentle_shutdown ) {
2507 slapd_abrupt_shutdown = 1;
2508 connections_shutdown();
2511 Debug( LDAP_DEBUG_ANY,
2512 "slapd shutdown: waiting for %d threads to terminate\n",
2513 ldap_pvt_thread_pool_backload( &connection_pool ), 0, 0 );
2514 ldap_pvt_thread_pool_destroy( &connection_pool, 1 );
2516 free( slap_listeners );
2517 slap_listeners = NULL;
2523 #ifdef LDAP_CONNECTIONLESS
2525 connectionless_init( void )
2529 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2530 Listener *lr = slap_listeners[l];
2533 if ( !lr->sl_is_udp ) {
2537 id = connection_init( lr->sl_sd, lr, "", "",
2538 CONN_IS_UDP, (slap_ssf_t) 0, NULL );
2541 Debug( LDAP_DEBUG_TRACE,
2542 "connectionless_init: failed on %s (%d)\n",
2543 lr->sl_url, lr->sl_sd, 0 );
2551 #endif /* LDAP_CONNECTIONLESS */
2554 slapd_daemon( void )
2559 #ifdef LDAP_CONNECTIONLESS
2560 connectionless_init();
2561 #endif /* LDAP_CONNECTIONLESS */
2563 #define SLAPD_LISTENER_THREAD 1
2564 #if defined( SLAPD_LISTENER_THREAD )
2566 ldap_pvt_thread_t listener_tid;
2568 /* listener as a separate THREAD */
2569 rc = ldap_pvt_thread_create( &listener_tid,
2570 0, slapd_daemon_task, NULL );
2573 Debug( LDAP_DEBUG_ANY,
2574 "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2578 /* wait for the listener thread to complete */
2579 ldap_pvt_thread_join( listener_tid, (void *)NULL );
2581 #else /* ! SLAPD_LISTENER_THREAD */
2582 /* experimental code */
2583 slapd_daemon_task( NULL );
2584 #endif /* ! SLAPD_LISTENER_THREAD */
2592 #if defined( HAVE_WINSOCK2 )
2593 WORD wVersionRequested;
2597 wVersionRequested = MAKEWORD( 2, 0 );
2599 err = WSAStartup( wVersionRequested, &wsaData );
2601 /* Tell the user that we couldn't find a usable */
2606 /* Confirm that the WinSock DLL supports 2.0.*/
2607 /* Note that if the DLL supports versions greater */
2608 /* than 2.0 in addition to 2.0, it will still return */
2609 /* 2.0 in wVersion since that is the version we */
2612 if ( LOBYTE( wsaData.wVersion ) != 2 ||
2613 HIBYTE( wsaData.wVersion ) != 0 )
2615 /* Tell the user that we couldn't find a usable */
2621 /* The WinSock DLL is acceptable. Proceed. */
2622 #elif defined( HAVE_WINSOCK )
2624 if ( WSAStartup( 0x0101, &wsaData ) != 0 ) return -1;
2625 #endif /* ! HAVE_WINSOCK2 && ! HAVE_WINSOCK */
2633 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2635 #endif /* HAVE_WINSOCK2 || HAVE_WINSOCK */
2642 slap_sig_shutdown( int sig )
2645 Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2649 * If the NT Service Manager is controlling the server, we don't
2650 * want SIGBREAK to kill the server. For some strange reason,
2651 * SIGBREAK is generated when a user logs out.
2654 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2655 if (is_NT_Service && sig == SIGBREAK) {
2658 #endif /* HAVE_NT_SERVICE_MANAGER && SIGBREAK */
2660 if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0) {
2661 slapd_gentle_shutdown = 1;
2670 /* reinstall self */
2671 (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2675 slap_sig_wake( int sig )
2679 /* reinstall self */
2680 (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2685 slapd_add_internal( ber_socket_t s, int isactive )
2687 slapd_add( s, isactive, NULL );
2691 slapd_get_listeners( void )
2693 return slap_listeners;
2697 slap_wake_listener()