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Patrick Welche <prlw1@cam.ac.uk>
[netbsd-mini2440.git] / external / bsd / openldap / dist / servers / slapd / daemon.c
blob6f7db6ce716656e0dd9ad34e39685bfd7fcf0104
1 /* $OpenLDAP: pkg/ldap/servers/slapd/daemon.c,v 1.380.2.12 2008/05/27 20:12:44 quanah Exp $ */
2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
3 *
4 * Copyright 1998-2008 The OpenLDAP Foundation.
5 * Portions Copyright 2007 by Howard Chu, Symas Corporation.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
10 * Public License.
11 *
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
15 */
16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
17 * All rights reserved.
18 *
19 * Redistribution and use in source and binary forms are permitted
20 * provided that this notice is preserved and that due credit is given
21 * to the University of Michigan at Ann Arbor. The name of the University
22 * may not be used to endorse or promote products derived from this
23 * software without specific prior written permission. This software
24 * is provided ``as is'' without express or implied warranty.
25 */
26
27 #include "portable.h"
28
29 #include <stdio.h>
30
31 #include <ac/ctype.h>
32 #include <ac/errno.h>
33 #include <ac/socket.h>
34 #include <ac/string.h>
35 #include <ac/time.h>
36 #include <ac/unistd.h>
37
38 #include "slap.h"
39 #include "ldap_pvt_thread.h"
40 #include "lutil.h"
41
42 #include "ldap_rq.h"
43
44 #if defined(HAVE_SYS_EPOLL_H) && defined(HAVE_EPOLL)
45 # include <sys/epoll.h>
46 #elif defined(SLAP_X_DEVPOLL) && defined(HAVE_SYS_DEVPOLL_H) && defined(HAVE_DEVPOLL)
47 # include <sys/types.h>
48 # include <sys/stat.h>
49 # include <fcntl.h>
50 # include <sys/devpoll.h>
51 #endif /* ! epoll && ! /dev/poll */
52
53 #ifdef HAVE_TCPD
54 int allow_severity = LOG_INFO;
55 int deny_severity = LOG_NOTICE;
56 #endif /* TCP Wrappers */
57
58 #ifdef LDAP_PF_LOCAL
59 # include <sys/stat.h>
60 /* this should go in <ldap.h> as soon as it is accepted */
61 # define LDAPI_MOD_URLEXT "x-mod"
62 #endif /* LDAP_PF_LOCAL */
63
64 #ifdef LDAP_PF_INET6
65 int slap_inet4or6 = AF_UNSPEC;
66 #else /* ! INETv6 */
67 int slap_inet4or6 = AF_INET;
68 #endif /* ! INETv6 */
69
70 /* globals */
71 time_t starttime;
72 ber_socket_t dtblsize;
73 slap_ssf_t local_ssf = LDAP_PVT_SASL_LOCAL_SSF;
74 struct runqueue_s slapd_rq;
75
76 Listener **slap_listeners = NULL;
77
78 #ifndef SLAPD_LISTEN_BACKLOG
79 #define SLAPD_LISTEN_BACKLOG 1024
80 #endif /* ! SLAPD_LISTEN_BACKLOG */
81
82 static ber_socket_t wake_sds[2];
83 static int emfile;
84
85 static volatile int waking;
86 #ifdef NO_THREADS
87 #define WAKE_LISTENER(w) do { \
88 if ((w) && ++waking < 5) { \
89 tcp_write( SLAP_FD2SOCK(wake_sds[1]), "0", 1 ); \
90 } \
91 } while (0)
92 #else /* ! NO_THREADS */
93 #define WAKE_LISTENER(w) do { \
94 if (w) { \
95 tcp_write( SLAP_FD2SOCK(wake_sds[1]), "0", 1 ); \
96 } \
97 } while (0)
98 #endif /* ! NO_THREADS */
99
100 volatile sig_atomic_t slapd_shutdown = 0;
101 volatile sig_atomic_t slapd_gentle_shutdown = 0;
102 volatile sig_atomic_t slapd_abrupt_shutdown = 0;
103
104 #ifdef HAVE_WINSOCK
105 ldap_pvt_thread_mutex_t slapd_ws_mutex;
106 SOCKET *slapd_ws_sockets;
107 #define SD_READ 1
108 #define SD_WRITE 2
109 #define SD_ACTIVE 4
110 #define SD_LISTENER 8
111 #endif
112
113 static struct slap_daemon {
114 ldap_pvt_thread_mutex_t sd_mutex;
115 #ifdef HAVE_TCPD
116 ldap_pvt_thread_mutex_t sd_tcpd_mutex;
117 #endif /* TCP Wrappers */
118
119 ber_socket_t sd_nactives;
120 int sd_nwriters;
121 int sd_nfds;
122
123 #if defined(HAVE_EPOLL)
124 struct epoll_event *sd_epolls;
125 int *sd_index;
126 int sd_epfd;
127 #elif defined(SLAP_X_DEVPOLL) && defined(HAVE_DEVPOLL)
128 /* eXperimental */
129 struct pollfd *sd_pollfd;
130 int *sd_index;
131 Listener **sd_l;
132 int sd_dpfd;
133 #else /* ! epoll && ! /dev/poll */
134 #ifdef HAVE_WINSOCK
135 char *sd_flags;
136 char *sd_rflags;
137 #else /* ! HAVE_WINSOCK */
138 fd_set sd_actives;
139 fd_set sd_readers;
140 fd_set sd_writers;
141 #endif /* ! HAVE_WINSOCK */
142 #endif /* ! epoll && ! /dev/poll */
143 } slap_daemon;
144
145 /*
146 * NOTE: naming convention for macros:
147 *
148 * - SLAP_SOCK_* and SLAP_EVENT_* for public interface that deals
149 * with file descriptors and events respectively
150 *
151 * - SLAP_<type>_* for private interface; type by now is one of
152 * EPOLL, DEVPOLL, SELECT
153 *
154 * private interface should not be used in the code.
155 */
156 #if defined(HAVE_EPOLL)
157 /***************************************
158 * Use epoll infrastructure - epoll(4) *
159 ***************************************/
160 # define SLAP_EVENT_FNAME "epoll"
161 # define SLAP_EVENTS_ARE_INDEXED 0
162 # define SLAP_EPOLL_SOCK_IX(s) (slap_daemon.sd_index[(s)])
163 # define SLAP_EPOLL_SOCK_EP(s) (slap_daemon.sd_epolls[SLAP_EPOLL_SOCK_IX(s)])
164 # define SLAP_EPOLL_SOCK_EV(s) (SLAP_EPOLL_SOCK_EP(s).events)
165 # define SLAP_SOCK_IS_ACTIVE(s) (SLAP_EPOLL_SOCK_IX(s) != -1)
166 # define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_EPOLL_SOCK_IX(s) == -1)
167 # define SLAP_EPOLL_SOCK_IS_SET(s, mode) (SLAP_EPOLL_SOCK_EV(s) & (mode))
168
169 # define SLAP_SOCK_IS_READ(s) SLAP_EPOLL_SOCK_IS_SET((s), EPOLLIN)
170 # define SLAP_SOCK_IS_WRITE(s) SLAP_EPOLL_SOCK_IS_SET((s), EPOLLOUT)
171
172 # define SLAP_EPOLL_SOCK_SET(s, mode) do { \
173 if ( (SLAP_EPOLL_SOCK_EV(s) & (mode)) != (mode) ) { \
174 SLAP_EPOLL_SOCK_EV(s) |= (mode); \
175 epoll_ctl( slap_daemon.sd_epfd, EPOLL_CTL_MOD, (s), \
176 &SLAP_EPOLL_SOCK_EP(s) ); \
177 } \
178 } while (0)
179
180 # define SLAP_EPOLL_SOCK_CLR(s, mode) do { \
181 if ( (SLAP_EPOLL_SOCK_EV(s) & (mode)) ) { \
182 SLAP_EPOLL_SOCK_EV(s) &= ~(mode); \
183 epoll_ctl( slap_daemon.sd_epfd, EPOLL_CTL_MOD, s, \
184 &SLAP_EPOLL_SOCK_EP(s) ); \
185 } \
186 } while (0)
187
188 # define SLAP_SOCK_SET_READ(s) SLAP_EPOLL_SOCK_SET(s, EPOLLIN)
189 # define SLAP_SOCK_SET_WRITE(s) SLAP_EPOLL_SOCK_SET(s, EPOLLOUT)
190
191 # define SLAP_SOCK_CLR_READ(s) SLAP_EPOLL_SOCK_CLR((s), EPOLLIN)
192 # define SLAP_SOCK_CLR_WRITE(s) SLAP_EPOLL_SOCK_CLR((s), EPOLLOUT)
193
194 # define SLAP_SOCK_SET_SUSPEND(s) \
195 ( slap_daemon.sd_suspend[SLAP_EPOLL_SOCK_IX(s)] = 1 )
196 # define SLAP_SOCK_CLR_SUSPEND(s) \
197 ( slap_daemon.sd_suspend[SLAP_EPOLL_SOCK_IX(s)] = 0 )
198 # define SLAP_SOCK_IS_SUSPEND(s) \
199 ( slap_daemon.sd_suspend[SLAP_EPOLL_SOCK_IX(s)] == 1 )
200
201 # define SLAP_EPOLL_EVENT_CLR(i, mode) (revents[(i)].events &= ~(mode))
202
203 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
204
205 /* If a Listener address is provided, store that as the epoll data.
206 * Otherwise, store the address of this socket's slot in the
207 * index array. If we can't do this add, the system is out of
208 * resources and we need to shutdown.
209 */
210 # define SLAP_SOCK_ADD(s, l) do { \
211 int rc; \
212 SLAP_EPOLL_SOCK_IX((s)) = slap_daemon.sd_nfds; \
213 SLAP_EPOLL_SOCK_EP((s)).data.ptr = (l) ? (l) : (void *)(&SLAP_EPOLL_SOCK_IX(s)); \
214 SLAP_EPOLL_SOCK_EV((s)) = EPOLLIN; \
215 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_ADD, \
216 (s), &SLAP_EPOLL_SOCK_EP((s))); \
217 if ( rc == 0 ) { \
218 slap_daemon.sd_nfds++; \
219 } else { \
220 Debug( LDAP_DEBUG_ANY, \
221 "daemon: epoll_ctl(ADD,fd=%d) failed, errno=%d, shutting down\n", \
222 s, errno, 0 ); \
223 slapd_shutdown = 2; \
224 } \
225 } while (0)
226
227 # define SLAP_EPOLL_EV_LISTENER(ptr) \
228 (((int *)(ptr) >= slap_daemon.sd_index && \
229 (int *)(ptr) <= &slap_daemon.sd_index[dtblsize]) ? 0 : 1 )
230
231 # define SLAP_EPOLL_EV_PTRFD(ptr) (SLAP_EPOLL_EV_LISTENER(ptr) ? \
232 ((Listener *)ptr)->sl_sd : \
233 (ber_socket_t) ((int *)(ptr) - slap_daemon.sd_index))
234
235 # define SLAP_SOCK_DEL(s) do { \
236 int fd, rc, index = SLAP_EPOLL_SOCK_IX((s)); \
237 if ( index < 0 ) break; \
238 rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_DEL, \
239 (s), &SLAP_EPOLL_SOCK_EP((s))); \
240 slap_daemon.sd_epolls[index] = \
241 slap_daemon.sd_epolls[slap_daemon.sd_nfds-1]; \
242 fd = SLAP_EPOLL_EV_PTRFD(slap_daemon.sd_epolls[index].data.ptr); \
243 slap_daemon.sd_index[fd] = index; \
244 slap_daemon.sd_index[(s)] = -1; \
245 slap_daemon.sd_nfds--; \
246 } while (0)
247
248 # define SLAP_EVENT_CLR_READ(i) SLAP_EPOLL_EVENT_CLR((i), EPOLLIN)
249 # define SLAP_EVENT_CLR_WRITE(i) SLAP_EPOLL_EVENT_CLR((i), EPOLLOUT)
250
251 # define SLAP_EPOLL_EVENT_CHK(i, mode) (revents[(i)].events & mode)
252
253 # define SLAP_EVENT_IS_READ(i) SLAP_EPOLL_EVENT_CHK((i), EPOLLIN)
254 # define SLAP_EVENT_IS_WRITE(i) SLAP_EPOLL_EVENT_CHK((i), EPOLLOUT)
255 # define SLAP_EVENT_IS_LISTENER(i) SLAP_EPOLL_EV_LISTENER(revents[(i)].data.ptr)
256 # define SLAP_EVENT_LISTENER(i) ((Listener *)(revents[(i)].data.ptr))
257
258 # define SLAP_EVENT_FD(i) SLAP_EPOLL_EV_PTRFD(revents[(i)].data.ptr)
259
260 # define SLAP_SOCK_INIT do { \
261 slap_daemon.sd_epolls = ch_calloc(1, \
262 ( sizeof(struct epoll_event) * 2 \
263 + sizeof(int) ) * dtblsize * 2); \
264 slap_daemon.sd_index = (int *)&slap_daemon.sd_epolls[ 2 * dtblsize ]; \
265 slap_daemon.sd_epfd = epoll_create( dtblsize ); \
266 for ( i = 0; i < dtblsize; i++ ) slap_daemon.sd_index[i] = -1; \
267 } while (0)
268
269 # define SLAP_SOCK_DESTROY do { \
270 if ( slap_daemon.sd_epolls != NULL ) { \
271 ch_free( slap_daemon.sd_epolls ); \
272 slap_daemon.sd_epolls = NULL; \
273 slap_daemon.sd_index = NULL; \
274 close( slap_daemon.sd_epfd ); \
275 } \
276 } while ( 0 )
277
278 # define SLAP_EVENT_DECL struct epoll_event *revents
279
280 # define SLAP_EVENT_INIT do { \
281 revents = slap_daemon.sd_epolls + dtblsize; \
282 } while (0)
283
284 # define SLAP_EVENT_WAIT(tvp, nsp) do { \
285 *(nsp) = epoll_wait( slap_daemon.sd_epfd, revents, \
286 dtblsize, (tvp) ? (tvp)->tv_sec * 1000 : -1 ); \
287 } while (0)
288
289 #elif defined(SLAP_X_DEVPOLL) && defined(HAVE_DEVPOLL)
290
291 /*************************************************************
292 * Use Solaris' (>= 2.7) /dev/poll infrastructure - poll(7d) *
293 *************************************************************/
294 # define SLAP_EVENT_FNAME "/dev/poll"
295 # define SLAP_EVENTS_ARE_INDEXED 0
296 /*
297 * - sd_index is used much like with epoll()
298 * - sd_l is maintained as an array containing the address
299 * of the listener; the index is the fd itself
300 * - sd_pollfd is used to keep track of what data has been
301 * registered in /dev/poll
302 */
303 # define SLAP_DEVPOLL_SOCK_IX(s) (slap_daemon.sd_index[(s)])
304 # define SLAP_DEVPOLL_SOCK_LX(s) (slap_daemon.sd_l[(s)])
305 # define SLAP_DEVPOLL_SOCK_EP(s) (slap_daemon.sd_pollfd[SLAP_DEVPOLL_SOCK_IX((s))])
306 # define SLAP_DEVPOLL_SOCK_FD(s) (SLAP_DEVPOLL_SOCK_EP((s)).fd)
307 # define SLAP_DEVPOLL_SOCK_EV(s) (SLAP_DEVPOLL_SOCK_EP((s)).events)
308 # define SLAP_SOCK_IS_ACTIVE(s) (SLAP_DEVPOLL_SOCK_IX((s)) != -1)
309 # define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_DEVPOLL_SOCK_IX((s)) == -1)
310 # define SLAP_SOCK_IS_SET(s, mode) (SLAP_DEVPOLL_SOCK_EV((s)) & (mode))
311
312 # define SLAP_SOCK_IS_READ(s) SLAP_SOCK_IS_SET((s), POLLIN)
313 # define SLAP_SOCK_IS_WRITE(s) SLAP_SOCK_IS_SET((s), POLLOUT)
314
315 /* as far as I understand, any time we need to communicate with the kernel
316 * about the number and/or properties of a file descriptor we need it to
317 * wait for, we have to rewrite the whole set */
318 # define SLAP_DEVPOLL_WRITE_POLLFD(s, pfd, n, what, shdn) do { \
319 int rc; \
320 size_t size = (n) * sizeof( struct pollfd ); \
321 /* FIXME: use pwrite? */ \
322 rc = write( slap_daemon.sd_dpfd, (pfd), size ); \
323 if ( rc != size ) { \
324 Debug( LDAP_DEBUG_ANY, "daemon: " SLAP_EVENT_FNAME ": " \
325 "%s fd=%d failed errno=%d\n", \
326 (what), (s), errno ); \
327 if ( (shdn) ) { \
328 slapd_shutdown = 2; \
329 } \
330 } \
331 } while (0)
332
333 # define SLAP_DEVPOLL_SOCK_SET(s, mode) do { \
334 Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_SET_%s(%d)=%d\n", \
335 (mode) == POLLIN ? "READ" : "WRITE", (s), \
336 ( (SLAP_DEVPOLL_SOCK_EV((s)) & (mode)) != (mode) ) ); \
337 if ( (SLAP_DEVPOLL_SOCK_EV((s)) & (mode)) != (mode) ) { \
338 struct pollfd pfd; \
339 SLAP_DEVPOLL_SOCK_EV((s)) |= (mode); \
340 pfd.fd = SLAP_DEVPOLL_SOCK_FD((s)); \
341 pfd.events = /* (mode) */ SLAP_DEVPOLL_SOCK_EV((s)); \
342 SLAP_DEVPOLL_WRITE_POLLFD((s), &pfd, 1, "SET", 0); \
343 } \
344 } while (0)
345
346 # define SLAP_DEVPOLL_SOCK_CLR(s, mode) do { \
347 Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_CLR_%s(%d)=%d\n", \
348 (mode) == POLLIN ? "READ" : "WRITE", (s), \
349 ( (SLAP_DEVPOLL_SOCK_EV((s)) & (mode)) == (mode) ) ); \
350 if ((SLAP_DEVPOLL_SOCK_EV((s)) & (mode)) == (mode) ) { \
351 struct pollfd pfd[2]; \
352 SLAP_DEVPOLL_SOCK_EV((s)) &= ~(mode); \
353 pfd[0].fd = SLAP_DEVPOLL_SOCK_FD((s)); \
354 pfd[0].events = POLLREMOVE; \
355 pfd[1] = SLAP_DEVPOLL_SOCK_EP((s)); \
356 SLAP_DEVPOLL_WRITE_POLLFD((s), &pfd[0], 2, "CLR", 0); \
357 } \
358 } while (0)
359
360 # define SLAP_SOCK_SET_READ(s) SLAP_DEVPOLL_SOCK_SET(s, POLLIN)
361 # define SLAP_SOCK_SET_WRITE(s) SLAP_DEVPOLL_SOCK_SET(s, POLLOUT)
362
363 # define SLAP_SOCK_CLR_READ(s) SLAP_DEVPOLL_SOCK_CLR((s), POLLIN)
364 # define SLAP_SOCK_CLR_WRITE(s) SLAP_DEVPOLL_SOCK_CLR((s), POLLOUT)
365
366 # define SLAP_SOCK_SET_SUSPEND(s) \
367 ( slap_daemon.sd_suspend[SLAP_DEVPOLL_SOCK_IX((s))] = 1 )
368 # define SLAP_SOCK_CLR_SUSPEND(s) \
369 ( slap_daemon.sd_suspend[SLAP_DEVPOLL_SOCK_IX((s))] = 0 )
370 # define SLAP_SOCK_IS_SUSPEND(s) \
371 ( slap_daemon.sd_suspend[SLAP_DEVPOLL_SOCK_IX((s))] == 1 )
372
373 # define SLAP_DEVPOLL_EVENT_CLR(i, mode) (revents[(i)].events &= ~(mode))
374
375 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
376
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
379 * need to shutdown.
380 */
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++; \
389 } while (0)
390
391 # define SLAP_DEVPOLL_EV_LISTENER(ptr) ((ptr) != NULL)
392
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; \
403 } \
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--; \
409 } while (0)
410
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)
413
414 # define SLAP_DEVPOLL_EVENT_CHK(i, mode) (revents[(i)].events & (mode))
415
416 # define SLAP_EVENT_FD(i) (revents[(i)].fd)
417
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)))
422
423 # define SLAP_SOCK_INIT do { \
424 slap_daemon.sd_pollfd = ch_calloc( 1, \
425 ( sizeof(struct pollfd) * 2 \
426 + sizeof( int ) \
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", \
434 errno, 0, 0 ); \
435 SLAP_SOCK_DESTROY; \
436 return -1; \
437 } \
438 for ( i = 0; i < dtblsize; i++ ) { \
439 slap_daemon.sd_pollfd[i].fd = -1; \
440 slap_daemon.sd_index[i] = -1; \
441 } \
442 } while (0)
443
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 ); \
451 } \
452 } while ( 0 )
453
454 # define SLAP_EVENT_DECL struct pollfd *revents
455
456 # define SLAP_EVENT_INIT do { \
457 revents = &slap_daemon.sd_pollfd[ dtblsize ]; \
458 } while (0)
459
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 ); \
466 } while (0)
467
468 #else /* ! epoll && ! /dev/poll */
469 # ifdef HAVE_WINSOCK
470 # define SLAP_EVENT_FNAME "WSselect"
471 /* Winsock provides a "select" function but its fd_sets are
472 * actually arrays of sockets. Since these sockets are handles
473 * and not a contiguous range of small integers, we manage our
474 * own "fd" table of socket handles and use their indices as
475 * descriptors.
476 *
477 * All of our listener/connection structures use fds; the actual
478 * I/O functions use sockets. The SLAP_FD2SOCK macro in proto-slap.h
479 * handles the mapping.
480 *
481 * Despite the mapping overhead, this is about 45% more efficient
482 * than just using Winsock's select and FD_ISSET directly.
483 *
484 * Unfortunately Winsock's select implementation doesn't scale well
485 * as the number of connections increases. This probably needs to be
486 * rewritten to use the Winsock overlapped/asynchronous I/O functions.
487 */
488 # define SLAP_EVENTS_ARE_INDEXED 1
489 # define SLAP_EVENT_DECL fd_set readfds, writefds
490 # define SLAP_EVENT_INIT do { \
491 int i; \
492 FD_ZERO( &readfds ); \
493 FD_ZERO( &writefds ); \
494 memset( slap_daemon.sd_rflags, 0, slap_daemon.sd_nfds ); \
495 for ( i=0; i<slap_daemon.sd_nfds; i++ ) { \
496 if ( slap_daemon.sd_flags[i] & SD_READ ) \
497 FD_SET( slapd_ws_sockets[i], &readfds );\
498 if ( slap_daemon.sd_flags[i] & SD_WRITE ) \
499 FD_SET( slapd_ws_sockets[i], &writefds ); \
500 } } while ( 0 )
501
502 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
503
504 # define SLAP_EVENT_WAIT(tvp, nsp) do { \
505 int i; \
506 *(nsp) = select( SLAP_EVENT_MAX, &readfds, \
507 nwriters > 0 ? &writefds : NULL, NULL, (tvp) ); \
508 for ( i=0; i<readfds.fd_count; i++) { \
509 int fd = slapd_sock2fd(readfds.fd_array[i]); \
510 if ( fd >= 0 ) { \
511 slap_daemon.sd_rflags[fd] = SD_READ; \
512 if ( fd >= *(nsp)) *(nsp) = fd+1; \
513 } \
514 } \
515 for ( i=0; i<writefds.fd_count; i++) { \
516 int fd = slapd_sock2fd(writefds.fd_array[i]); \
517 if ( fd >= 0 ) { \
518 slap_daemon.sd_rflags[fd] = SD_WRITE; \
519 if ( fd >= *(nsp)) *(nsp) = fd+1; \
520 } \
521 } \
522 } while (0)
523
524 # define SLAP_EVENT_IS_READ(fd) (slap_daemon.sd_rflags[fd] & SD_READ)
525 # define SLAP_EVENT_IS_WRITE(fd) (slap_daemon.sd_rflags[fd] & SD_WRITE)
526
527 # define SLAP_EVENT_CLR_READ(fd) slap_daemon.sd_rflags[fd] &= ~SD_READ;
528 # define SLAP_EVENT_CLR_WRITE(fd) slap_daemon.sd_rflags[fd] &= ~SD_WRITE;
529
530 # define SLAP_SOCK_INIT do { \
531 ldap_pvt_thread_mutex_init( &slapd_ws_mutex ); \
532 slapd_ws_sockets = ch_malloc( dtblsize * ( sizeof(SOCKET) + 2)); \
533 slap_daemon.sd_flags = (char *)(slapd_ws_sockets + dtblsize); \
534 slap_daemon.sd_rflags = slap_daemon.sd_flags + dtblsize; \
535 memset( slapd_ws_sockets, -1, dtblsize * sizeof(SOCKET) ); \
536 slapd_ws_sockets[0] = wake_sds[0]; \
537 slapd_ws_sockets[1] = wake_sds[1]; \
538 wake_sds[0] = 0; \
539 wake_sds[1] = 1; \
540 slap_daemon.sd_nfds = 2; \
541 } while ( 0 )
542
543 # define SLAP_SOCK_DESTROY do { \
544 ch_free( slapd_ws_sockets ); slapd_ws_sockets = NULL; \
545 slap_daemon.sd_flags = NULL; \
546 slap_daemon.sd_rflags = NULL; \
547 ldap_pvt_thread_mutex_destroy( &slapd_ws_mutex ); \
548 } while ( 0 )
549
550 # define SLAP_SOCK_IS_ACTIVE(fd) ( slap_daemon.sd_flags[fd] & SD_ACTIVE )
551 # define SLAP_SOCK_IS_READ(fd) ( slap_daemon.sd_flags[fd] & SD_READ )
552 # define SLAP_SOCK_IS_WRITE(fd) ( slap_daemon.sd_flags[fd] & SD_WRITE )
553 # define SLAP_SOCK_NOT_ACTIVE(fd) (!slap_daemon.sd_flags[fd])
554
555 # define SLAP_SOCK_SET_READ(fd) ( slap_daemon.sd_flags[fd] |= SD_READ )
556 # define SLAP_SOCK_SET_WRITE(fd) ( slap_daemon.sd_flags[fd] |= SD_WRITE )
557
558 # define SLAP_SELECT_ADDTEST(s) do { \
559 if ((s) >= slap_daemon.sd_nfds) slap_daemon.sd_nfds = (s)+1; \
560 } while (0)
561
562 # define SLAP_SOCK_CLR_READ(fd) ( slap_daemon.sd_flags[fd] &= ~SD_READ )
563 # define SLAP_SOCK_CLR_WRITE(fd) ( slap_daemon.sd_flags[fd] &= ~SD_WRITE )
564
565 # define SLAP_SOCK_ADD(s, l) do { \
566 SLAP_SELECT_ADDTEST((s)); \
567 slap_daemon.sd_flags[s] = SD_ACTIVE|SD_READ; \
568 } while ( 0 )
569
570 # define SLAP_SOCK_DEL(s) do { \
571 slap_daemon.sd_flags[s] = 0; \
572 slapd_sockdel( s ); \
573 } while ( 0 )
574
575 # else /* !HAVE_WINSOCK */
576
577 /**************************************
578 * Use select system call - select(2) *
579 **************************************/
580 # define SLAP_EVENT_FNAME "select"
581 /* select */
582 # define SLAP_EVENTS_ARE_INDEXED 1
583 # define SLAP_EVENT_DECL fd_set readfds, writefds
584
585 # define SLAP_EVENT_INIT do { \
586 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) ); \
587 if ( nwriters ) { \
588 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) ); \
589 } else { \
590 FD_ZERO( &writefds ); \
591 } \
592 } while (0)
593
594 # ifdef FD_SETSIZE
595 # define SLAP_SELECT_CHK_SETSIZE do { \
596 if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE; \
597 } while (0)
598 # else /* ! FD_SETSIZE */
599 # define SLAP_SELECT_CHK_SETSIZE do { ; } while (0)
600 # endif /* ! FD_SETSIZE */
601
602 # define SLAP_SOCK_INIT do { \
603 SLAP_SELECT_CHK_SETSIZE; \
604 FD_ZERO(&slap_daemon.sd_actives); \
605 FD_ZERO(&slap_daemon.sd_readers); \
606 FD_ZERO(&slap_daemon.sd_writers); \
607 } while (0)
608
609 # define SLAP_SOCK_DESTROY
610
611 # define SLAP_SOCK_IS_ACTIVE(fd) FD_ISSET((fd), &slap_daemon.sd_actives)
612 # define SLAP_SOCK_IS_READ(fd) FD_ISSET((fd), &slap_daemon.sd_readers)
613 # define SLAP_SOCK_IS_WRITE(fd) FD_ISSET((fd), &slap_daemon.sd_writers)
614
615 # define SLAP_SOCK_NOT_ACTIVE(fd) (!SLAP_SOCK_IS_ACTIVE(fd) && \
616 !SLAP_SOCK_IS_READ(fd) && !SLAP_SOCK_IS_WRITE(fd))
617
618 # define SLAP_SOCK_SET_READ(fd) FD_SET((fd), &slap_daemon.sd_readers)
619 # define SLAP_SOCK_SET_WRITE(fd) FD_SET((fd), &slap_daemon.sd_writers)
620
621 # define SLAP_EVENT_MAX slap_daemon.sd_nfds
622 # define SLAP_SELECT_ADDTEST(s) do { \
623 if ((s) >= slap_daemon.sd_nfds) slap_daemon.sd_nfds = (s)+1; \
624 } while (0)
625
626 # define SLAP_SOCK_CLR_READ(fd) FD_CLR((fd), &slap_daemon.sd_readers)
627 # define SLAP_SOCK_CLR_WRITE(fd) FD_CLR((fd), &slap_daemon.sd_writers)
628
629 # define SLAP_SOCK_ADD(s, l) do { \
630 SLAP_SELECT_ADDTEST((s)); \
631 FD_SET((s), &slap_daemon.sd_actives); \
632 FD_SET((s), &slap_daemon.sd_readers); \
633 } while (0)
634
635 # define SLAP_SOCK_DEL(s) do { \
636 FD_CLR((s), &slap_daemon.sd_actives); \
637 FD_CLR((s), &slap_daemon.sd_readers); \
638 FD_CLR((s), &slap_daemon.sd_writers); \
639 } while (0)
640
641 # define SLAP_EVENT_IS_READ(fd) FD_ISSET((fd), &readfds)
642 # define SLAP_EVENT_IS_WRITE(fd) FD_ISSET((fd), &writefds)
643
644 # define SLAP_EVENT_CLR_READ(fd) FD_CLR((fd), &readfds)
645 # define SLAP_EVENT_CLR_WRITE(fd) FD_CLR((fd), &writefds)
646
647 # define SLAP_EVENT_WAIT(tvp, nsp) do { \
648 *(nsp) = select( SLAP_EVENT_MAX, &readfds, \
649 nwriters > 0 ? &writefds : NULL, NULL, (tvp) ); \
650 } while (0)
651 # endif /* !HAVE_WINSOCK */
652 #endif /* ! epoll && ! /dev/poll */
653
654 #ifdef HAVE_SLP
655 /*
656 * SLP related functions
657 */
658 #include <slp.h>
659
660 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
661 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
662 static char** slapd_srvurls = NULL;
663 static SLPHandle slapd_hslp = 0;
664 int slapd_register_slp = 0;
665 const char *slapd_slp_attrs = NULL;
666
667 static SLPError slapd_slp_cookie;
668
669 static void
670 slapd_slp_init( const char* urls )
671 {
672 int i;
673 SLPError err;
674
675 slapd_srvurls = ldap_str2charray( urls, " " );
676
677 if ( slapd_srvurls == NULL ) return;
678
679 /* find and expand INADDR_ANY URLs */
680 for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
681 if ( strcmp( slapd_srvurls[i], "ldap:///" ) == 0 ) {
682 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
683 strlen( global_host ) +
684 sizeof( LDAP_SRVTYPE_PREFIX ) );
685 strcpy( lutil_strcopy(slapd_srvurls[i],
686 LDAP_SRVTYPE_PREFIX ), global_host );
687 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0 ) {
688 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
689 strlen( global_host ) +
690 sizeof( LDAPS_SRVTYPE_PREFIX ) );
691 strcpy( lutil_strcopy(slapd_srvurls[i],
692 LDAPS_SRVTYPE_PREFIX ), global_host );
693 }
694 }
695
696 /* open the SLP handle */
697 err = SLPOpen( "en", 0, &slapd_hslp );
698
699 if ( err != SLP_OK ) {
700 Debug( LDAP_DEBUG_CONNS, "daemon: SLPOpen() failed with %ld\n",
701 (long)err, 0, 0 );
702 }
703 }
704
705 static void
706 slapd_slp_deinit( void )
707 {
708 if ( slapd_srvurls == NULL ) return;
709
710 ldap_charray_free( slapd_srvurls );
711 slapd_srvurls = NULL;
712
713 /* close the SLP handle */
714 SLPClose( slapd_hslp );
715 }
716
717 static void
718 slapd_slp_regreport(
719 SLPHandle hslp,
720 SLPError errcode,
721 void *cookie )
722 {
723 /* return the error code in the cookie */
724 *(SLPError*)cookie = errcode;
725 }
726
727 static void
728 slapd_slp_reg()
729 {
730 int i;
731 SLPError err;
732
733 if ( slapd_srvurls == NULL ) return;
734
735 for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
736 if ( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
737 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
738 strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
739 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
740 {
741 err = SLPReg( slapd_hslp,
742 slapd_srvurls[i],
743 SLP_LIFETIME_MAXIMUM,
744 "ldap",
745 (slapd_slp_attrs) ? slapd_slp_attrs : "",
746 SLP_TRUE,
747 slapd_slp_regreport,
748 &slapd_slp_cookie );
749
750 if ( err != SLP_OK || slapd_slp_cookie != SLP_OK ) {
751 Debug( LDAP_DEBUG_CONNS,
752 "daemon: SLPReg(%s) failed with %ld, cookie = %ld\n",
753 slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
754 }
755 }
756 }
757 }
758
759 static void
760 slapd_slp_dereg( void )
761 {
762 int i;
763 SLPError err;
764
765 if ( slapd_srvurls == NULL ) return;
766
767 for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
768 err = SLPDereg( slapd_hslp,
769 slapd_srvurls[i],
770 slapd_slp_regreport,
771 &slapd_slp_cookie );
772
773 if ( err != SLP_OK || slapd_slp_cookie != SLP_OK ) {
774 Debug( LDAP_DEBUG_CONNS,
775 "daemon: SLPDereg(%s) failed with %ld, cookie = %ld\n",
776 slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
777 }
778 }
779 }
780 #endif /* HAVE_SLP */
781
782 #ifdef HAVE_WINSOCK
783 /* Manage the descriptor to socket table */
784 ber_socket_t
785 slapd_socknew( ber_socket_t s )
786 {
787 ber_socket_t i;
788 ldap_pvt_thread_mutex_lock( &slapd_ws_mutex );
789 for ( i = 0; i < dtblsize && slapd_ws_sockets[i] != INVALID_SOCKET; i++ );
790 if ( i == dtblsize ) {
791 WSASetLastError( WSAEMFILE );
792 } else {
793 slapd_ws_sockets[i] = s;
794 }
795 ldap_pvt_thread_mutex_unlock( &slapd_ws_mutex );
796 return i;
797 }
798
799 void
800 slapd_sockdel( ber_socket_t s )
801 {
802 ldap_pvt_thread_mutex_lock( &slapd_ws_mutex );
803 slapd_ws_sockets[s] = INVALID_SOCKET;
804 ldap_pvt_thread_mutex_unlock( &slapd_ws_mutex );
805 }
806
807 ber_socket_t
808 slapd_sock2fd( ber_socket_t s )
809 {
810 ber_socket_t i;
811 for ( i=0; i<dtblsize && slapd_ws_sockets[i] != s; i++);
812 if ( i == dtblsize )
813 i = -1;
814 return i;
815 }
816 #endif
817
818 /*
819 * Add a descriptor to daemon control
820 *
821 * If isactive, the descriptor is a live server session and is subject
822 * to idletimeout control. Otherwise, the descriptor is a passive
823 * listener or an outbound client session, and not subject to
824 * idletimeout. The underlying event handler may record the Listener
825 * argument to differentiate Listener's from real sessions.
826 */
827 static void
828 slapd_add( ber_socket_t s, int isactive, Listener *sl )
829 {
830 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
831
832 assert( SLAP_SOCK_NOT_ACTIVE(s) );
833
834 if ( isactive ) slap_daemon.sd_nactives++;
835
836 SLAP_SOCK_ADD(s, sl);
837
838 Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr%s listener=%p\n",
839 (long) s, isactive ? " (active)" : "", (void *)sl );
840
841 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
842
843 WAKE_LISTENER(1);
844 }
845
846 /*
847 * NOTE: unused
848 */
849 void
850 slapd_sd_lock( void )
851 {
852 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
853 }
854
855 /*
856 * NOTE: unused
857 */
858 void
859 slapd_sd_unlock( void )
860 {
861 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
862 }
863
864 /*
865 * Remove the descriptor from daemon control
866 */
867 void
868 slapd_remove(
869 ber_socket_t s,
870 Sockbuf *sb,
871 int wasactive,
872 int wake,
873 int locked )
874 {
875 int waswriter;
876 int wasreader;
877
878 if ( !locked )
879 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
880
881 assert( SLAP_SOCK_IS_ACTIVE( s ));
882
883 if ( wasactive ) slap_daemon.sd_nactives--;
884
885 waswriter = SLAP_SOCK_IS_WRITE(s);
886 wasreader = SLAP_SOCK_IS_READ(s);
887
888 Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
889 (long) s,
890 wasreader ? "r" : "",
891 waswriter ? "w" : "" );
892
893 if ( waswriter ) slap_daemon.sd_nwriters--;
894
895 SLAP_SOCK_DEL(s);
896
897 if ( sb )
898 ber_sockbuf_free(sb);
899
900 /* If we ran out of file descriptors, we dropped a listener from
901 * the select() loop. Now that we're removing a session from our
902 * control, we can try to resume a dropped listener to use.
903 */
904 if ( emfile ) {
905 int i;
906 for ( i = 0; slap_listeners[i] != NULL; i++ ) {
907 Listener *lr = slap_listeners[i];
908
909 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
910 if ( lr->sl_sd == s ) continue;
911 if ( lr->sl_mute ) {
912 lr->sl_mute = 0;
913 emfile--;
914 break;
915 }
916 }
917 /* Walked the entire list without enabling anything; emfile
918 * counter is stale. Reset it.
919 */
920 if ( slap_listeners[i] == NULL ) emfile = 0;
921 }
922 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
923 WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
924 }
925
926 void
927 slapd_clr_write( ber_socket_t s, int wake )
928 {
929 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
930
931 if ( SLAP_SOCK_IS_WRITE( s )) {
932 assert( SLAP_SOCK_IS_ACTIVE( s ));
933
934 SLAP_SOCK_CLR_WRITE( s );
935 slap_daemon.sd_nwriters--;
936 }
937
938 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
939 WAKE_LISTENER(wake);
940 }
941
942 void
943 slapd_set_write( ber_socket_t s, int wake )
944 {
945 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
946
947 assert( SLAP_SOCK_IS_ACTIVE( s ));
948
949 if ( !SLAP_SOCK_IS_WRITE( s )) {
950 SLAP_SOCK_SET_WRITE( s );
951 slap_daemon.sd_nwriters++;
952 }
953
954 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
955 WAKE_LISTENER(wake);
956 }
957
958 int
959 slapd_clr_read( ber_socket_t s, int wake )
960 {
961 int rc = 1;
962 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
963
964 if ( SLAP_SOCK_IS_ACTIVE( s )) {
965 SLAP_SOCK_CLR_READ( s );
966 rc = 0;
967 }
968 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
969 if ( !rc )
970 WAKE_LISTENER(wake);
971 return rc;
972 }
973
974 void
975 slapd_set_read( ber_socket_t s, int wake )
976 {
977 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
978
979 assert( SLAP_SOCK_IS_ACTIVE( s ));
980 if (!SLAP_SOCK_IS_READ( s )) SLAP_SOCK_SET_READ( s );
981
982 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
983 WAKE_LISTENER(wake);
984 }
985
986 static void
987 slapd_close( ber_socket_t s )
988 {
989 Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
990 (long) s, 0, 0 );
991 tcp_close( SLAP_FD2SOCK(s) );
992 #ifdef HAVE_WINSOCK
993 slapd_sockdel( s );
994 #endif
995 }
996
997 static void
998 slap_free_listener_addresses( struct sockaddr **sal )
999 {
1000 struct sockaddr **sap;
1001 if (sal == NULL) return;
1002 for (sap = sal; *sap != NULL; sap++) ch_free(*sap);
1003 ch_free(sal);
1004 }
1005
1006 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
1007 static int
1008 get_url_perms(
1009 char **exts,
1010 mode_t *perms,
1011 int *crit )
1012 {
1013 int i;
1014
1015 assert( exts != NULL );
1016 assert( perms != NULL );
1017 assert( crit != NULL );
1018
1019 *crit = 0;
1020 for ( i = 0; exts[ i ]; i++ ) {
1021 char *type = exts[ i ];
1022 int c = 0;
1023
1024 if ( type[ 0 ] == '!' ) {
1025 c = 1;
1026 type++;
1027 }
1028
1029 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=",
1030 sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 )
1031 {
1032 char *value = type + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
1033 mode_t p = 0;
1034 int j;
1035
1036 switch (strlen(value)) {
1037 case 4:
1038 /* skip leading '0' */
1039 if ( value[ 0 ] != '0' ) return LDAP_OTHER;
1040 value++;
1041
1042 case 3:
1043 for ( j = 0; j < 3; j++) {
1044 int v;
1045
1046 v = value[ j ] - '0';
1047
1048 if ( v < 0 || v > 7 ) return LDAP_OTHER;
1049
1050 p |= v << 3*(2-j);
1051 }
1052 break;
1053
1054 case 10:
1055 for ( j = 1; j < 10; j++ ) {
1056 static mode_t m[] = { 0,
1057 S_IRUSR, S_IWUSR, S_IXUSR,
1058 S_IRGRP, S_IWGRP, S_IXGRP,
1059 S_IROTH, S_IWOTH, S_IXOTH
1060 };
1061 static const char c[] = "-rwxrwxrwx";
1062
1063 if ( value[ j ] == c[ j ] ) {
1064 p |= m[ j ];
1065
1066 } else if ( value[ j ] != '-' ) {
1067 return LDAP_OTHER;
1068 }
1069 }
1070 break;
1071
1072 default:
1073 return LDAP_OTHER;
1074 }
1075
1076 *crit = c;
1077 *perms = p;
1078
1079 return LDAP_SUCCESS;
1080 }
1081 }
1082
1083 return LDAP_OTHER;
1084 }
1085 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
1086
1087 /* port = 0 indicates AF_LOCAL */
1088 static int
1089 slap_get_listener_addresses(
1090 const char *host,
1091 unsigned short port,
1092 struct sockaddr ***sal )
1093 {
1094 struct sockaddr **sap;
1095
1096 #ifdef LDAP_PF_LOCAL
1097 if ( port == 0 ) {
1098 *sal = ch_malloc(2 * sizeof(void *));
1099 if (*sal == NULL) return -1;
1100
1101 sap = *sal;
1102 *sap = ch_malloc(sizeof(struct sockaddr_un));
1103 if (*sap == NULL) goto errexit;
1104 sap[1] = NULL;
1105
1106 if ( strlen(host) >
1107 (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) )
1108 {
1109 Debug( LDAP_DEBUG_ANY,
1110 "daemon: domain socket path (%s) too long in URL",
1111 host, 0, 0);
1112 goto errexit;
1113 }
1114
1115 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
1116 (*sap)->sa_family = AF_LOCAL;
1117 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
1118 } else
1119 #endif /* LDAP_PF_LOCAL */
1120 {
1121 #ifdef HAVE_GETADDRINFO
1122 struct addrinfo hints, *res, *sai;
1123 int n, err;
1124 char serv[7];
1125
1126 memset( &hints, '\0', sizeof(hints) );
1127 hints.ai_flags = AI_PASSIVE;
1128 hints.ai_socktype = SOCK_STREAM;
1129 hints.ai_family = slap_inet4or6;
1130 snprintf(serv, sizeof serv, "%d", port);
1131
1132 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
1133 Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo() failed: %s\n",
1134 AC_GAI_STRERROR(err), 0, 0);
1135 return -1;
1136 }
1137
1138 sai = res;
1139 for (n=2; (sai = sai->ai_next) != NULL; n++) {
1140 /* EMPTY */ ;
1141 }
1142 *sal = ch_calloc(n, sizeof(void *));
1143 if (*sal == NULL) return -1;
1144
1145 sap = *sal;
1146 *sap = NULL;
1147
1148 for ( sai=res; sai; sai=sai->ai_next ) {
1149 if( sai->ai_addr == NULL ) {
1150 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
1151 "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
1152 freeaddrinfo(res);
1153 goto errexit;
1154 }
1155
1156 switch (sai->ai_family) {
1157 # ifdef LDAP_PF_INET6
1158 case AF_INET6:
1159 *sap = ch_malloc(sizeof(struct sockaddr_in6));
1160 if (*sap == NULL) {
1161 freeaddrinfo(res);
1162 goto errexit;
1163 }
1164 *(struct sockaddr_in6 *)*sap =
1165 *((struct sockaddr_in6 *)sai->ai_addr);
1166 break;
1167 # endif /* LDAP_PF_INET6 */
1168 case AF_INET:
1169 *sap = ch_malloc(sizeof(struct sockaddr_in));
1170 if (*sap == NULL) {
1171 freeaddrinfo(res);
1172 goto errexit;
1173 }
1174 *(struct sockaddr_in *)*sap =
1175 *((struct sockaddr_in *)sai->ai_addr);
1176 break;
1177 default:
1178 *sap = NULL;
1179 break;
1180 }
1181
1182 if (*sap != NULL) {
1183 (*sap)->sa_family = sai->ai_family;
1184 sap++;
1185 *sap = NULL;
1186 }
1187 }
1188
1189 freeaddrinfo(res);
1190
1191 #else /* ! HAVE_GETADDRINFO */
1192 int i, n = 1;
1193 struct in_addr in;
1194 struct hostent *he = NULL;
1195
1196 if ( host == NULL ) {
1197 in.s_addr = htonl(INADDR_ANY);
1198
1199 } else if ( !inet_aton( host, &in ) ) {
1200 he = gethostbyname( host );
1201 if( he == NULL ) {
1202 Debug( LDAP_DEBUG_ANY,
1203 "daemon: invalid host %s", host, 0, 0);
1204 return -1;
1205 }
1206 for (n = 0; he->h_addr_list[n]; n++) /* empty */;
1207 }
1208
1209 *sal = ch_malloc((n+1) * sizeof(void *));
1210 if (*sal == NULL) return -1;
1211
1212 sap = *sal;
1213 for ( i = 0; i<n; i++ ) {
1214 sap[i] = ch_malloc(sizeof(struct sockaddr_in));
1215 if (*sap == NULL) goto errexit;
1216
1217 (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
1218 sap[i]->sa_family = AF_INET;
1219 ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
1220 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr,
1221 he ? (struct in_addr *)he->h_addr_list[i] : &in,
1222 sizeof(struct in_addr) );
1223 }
1224 sap[i] = NULL;
1225 #endif /* ! HAVE_GETADDRINFO */
1226 }
1227
1228 return 0;
1229
1230 errexit:
1231 slap_free_listener_addresses(*sal);
1232 return -1;
1233 }
1234
1235 static int
1236 slap_open_listener(
1237 const char* url,
1238 int *listeners,
1239 int *cur )
1240 {
1241 int num, tmp, rc;
1242 Listener l;
1243 Listener *li;
1244 LDAPURLDesc *lud;
1245 unsigned short port;
1246 int err, addrlen = 0;
1247 struct sockaddr **sal, **psal;
1248 int socktype = SOCK_STREAM; /* default to COTS */
1249 ber_socket_t s;
1250
1251 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
1252 /*
1253 * use safe defaults
1254 */
1255 int crit = 1;
1256 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
1257
1258 rc = ldap_url_parse( url, &lud );
1259
1260 if( rc != LDAP_URL_SUCCESS ) {
1261 Debug( LDAP_DEBUG_ANY,
1262 "daemon: listen URL \"%s\" parse error=%d\n",
1263 url, rc, 0 );
1264 return rc;
1265 }
1266
1267 l.sl_url.bv_val = NULL;
1268 l.sl_mute = 0;
1269 l.sl_busy = 0;
1270
1271 #ifndef HAVE_TLS
1272 if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
1273 Debug( LDAP_DEBUG_ANY, "daemon: TLS not supported (%s)\n",
1274 url, 0, 0 );
1275 ldap_free_urldesc( lud );
1276 return -1;
1277 }
1278
1279 if(! lud->lud_port ) lud->lud_port = LDAP_PORT;
1280
1281 #else /* HAVE_TLS */
1282 l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
1283
1284 if(! lud->lud_port ) {
1285 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
1286 }
1287 #endif /* HAVE_TLS */
1288
1289 port = (unsigned short) lud->lud_port;
1290
1291 tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
1292 if ( tmp == LDAP_PROTO_IPC ) {
1293 #ifdef LDAP_PF_LOCAL
1294 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
1295 err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
1296 } else {
1297 err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
1298 }
1299 #else /* ! LDAP_PF_LOCAL */
1300
1301 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
1302 url, 0, 0);
1303 ldap_free_urldesc( lud );
1304 return -1;
1305 #endif /* ! LDAP_PF_LOCAL */
1306 } else {
1307 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
1308 || strcmp(lud->lud_host, "*") == 0 )
1309 {
1310 err = slap_get_listener_addresses(NULL, port, &sal);
1311 } else {
1312 err = slap_get_listener_addresses(lud->lud_host, port, &sal);
1313 }
1314 }
1315
1316 #ifdef LDAP_CONNECTIONLESS
1317 l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
1318 #endif /* LDAP_CONNECTIONLESS */
1319
1320 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
1321 if ( lud->lud_exts ) {
1322 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
1323 } else {
1324 l.sl_perms = S_IRWXU | S_IRWXO;
1325 }
1326 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
1327
1328 ldap_free_urldesc( lud );
1329 if ( err ) return -1;
1330
1331 /* If we got more than one address returned, we need to make space
1332 * for it in the slap_listeners array.
1333 */
1334 for ( num=0; sal[num]; num++ ) /* empty */;
1335 if ( num > 1 ) {
1336 *listeners += num-1;
1337 slap_listeners = ch_realloc( slap_listeners,
1338 (*listeners + 1) * sizeof(Listener *) );
1339 }
1340
1341 psal = sal;
1342 while ( *sal != NULL ) {
1343 char *af;
1344 switch( (*sal)->sa_family ) {
1345 case AF_INET:
1346 af = "IPv4";
1347 break;
1348 #ifdef LDAP_PF_INET6
1349 case AF_INET6:
1350 af = "IPv6";
1351 break;
1352 #endif /* LDAP_PF_INET6 */
1353 #ifdef LDAP_PF_LOCAL
1354 case AF_LOCAL:
1355 af = "Local";
1356 break;
1357 #endif /* LDAP_PF_LOCAL */
1358 default:
1359 sal++;
1360 continue;
1361 }
1362
1363 #ifdef LDAP_CONNECTIONLESS
1364 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
1365 #endif /* LDAP_CONNECTIONLESS */
1366
1367 s = socket( (*sal)->sa_family, socktype, 0);
1368 if ( s == AC_SOCKET_INVALID ) {
1369 int err = sock_errno();
1370 Debug( LDAP_DEBUG_ANY,
1371 "daemon: %s socket() failed errno=%d (%s)\n",
1372 af, err, sock_errstr(err) );
1373 sal++;
1374 continue;
1375 }
1376 l.sl_sd = SLAP_SOCKNEW( s );
1377
1378 if ( l.sl_sd >= dtblsize ) {
1379 Debug( LDAP_DEBUG_ANY,
1380 "daemon: listener descriptor %ld is too great %ld\n",
1381 (long) l.sl_sd, (long) dtblsize, 0 );
1382 tcp_close( s );
1383 sal++;
1384 continue;
1385 }
1386
1387 #ifdef LDAP_PF_LOCAL
1388 if ( (*sal)->sa_family == AF_LOCAL ) {
1389 unlink( ((struct sockaddr_un *)*sal)->sun_path );
1390 } else
1391 #endif /* LDAP_PF_LOCAL */
1392 {
1393 #ifdef SO_REUSEADDR
1394 /* enable address reuse */
1395 tmp = 1;
1396 rc = setsockopt( s, SOL_SOCKET, SO_REUSEADDR,
1397 (char *) &tmp, sizeof(tmp) );
1398 if ( rc == AC_SOCKET_ERROR ) {
1399 int err = sock_errno();
1400 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1401 "setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
1402 (long) l.sl_sd, err, sock_errstr(err) );
1403 }
1404 #endif /* SO_REUSEADDR */
1405 }
1406
1407 switch( (*sal)->sa_family ) {
1408 case AF_INET:
1409 addrlen = sizeof(struct sockaddr_in);
1410 break;
1411 #ifdef LDAP_PF_INET6
1412 case AF_INET6:
1413 #ifdef IPV6_V6ONLY
1414 /* Try to use IPv6 sockets for IPv6 only */
1415 tmp = 1;
1416 rc = setsockopt( s , IPPROTO_IPV6, IPV6_V6ONLY,
1417 (char *) &tmp, sizeof(tmp) );
1418 if ( rc == AC_SOCKET_ERROR ) {
1419 int err = sock_errno();
1420 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1421 "setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
1422 (long) l.sl_sd, err, sock_errstr(err) );
1423 }
1424 #endif /* IPV6_V6ONLY */
1425 addrlen = sizeof(struct sockaddr_in6);
1426 break;
1427 #endif /* LDAP_PF_INET6 */
1428
1429 #ifdef LDAP_PF_LOCAL
1430 case AF_LOCAL:
1431 #ifdef LOCAL_CREDS
1432 {
1433 int one = 1;
1434 setsockopt( s, 0, LOCAL_CREDS, &one, sizeof( one ) );
1435 }
1436 #endif /* LOCAL_CREDS */
1437
1438 addrlen = sizeof( struct sockaddr_un );
1439 break;
1440 #endif /* LDAP_PF_LOCAL */
1441 }
1442
1443 #ifdef LDAP_PF_LOCAL
1444 /* create socket with all permissions set for those systems
1445 * that honor permissions on sockets (e.g. Linux); typically,
1446 * only write is required. To exploit filesystem permissions,
1447 * place the socket in a directory and use directory's
1448 * permissions. Need write perms to the directory to
1449 * create/unlink the socket; likely need exec perms to access
1450 * the socket (ITS#4709) */
1451 {
1452 mode_t old_umask;
1453
1454 if ( (*sal)->sa_family == AF_LOCAL ) {
1455 old_umask = umask( 0 );
1456 }
1457 #endif /* LDAP_PF_LOCAL */
1458 rc = bind( s, *sal, addrlen );
1459 #ifdef LDAP_PF_LOCAL
1460 if ( (*sal)->sa_family == AF_LOCAL ) {
1461 umask( old_umask );
1462 }
1463 }
1464 #endif /* LDAP_PF_LOCAL */
1465 if ( rc ) {
1466 err = sock_errno();
1467 Debug( LDAP_DEBUG_ANY,
1468 "daemon: bind(%ld) failed errno=%d (%s)\n",
1469 (long)l.sl_sd, err, sock_errstr( err ) );
1470 tcp_close( s );
1471 sal++;
1472 continue;
1473 }
1474
1475 switch ( (*sal)->sa_family ) {
1476 #ifdef LDAP_PF_LOCAL
1477 case AF_LOCAL: {
1478 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
1479 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
1480 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
1481 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
1482 "PATH=%s", addr );
1483 } break;
1484 #endif /* LDAP_PF_LOCAL */
1485
1486 case AF_INET: {
1487 char *s;
1488 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1489 char addr[INET_ADDRSTRLEN];
1490 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
1491 addr, sizeof(addr) );
1492 s = addr;
1493 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1494 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
1495 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1496 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
1497 l.sl_name.bv_val =
1498 ber_memalloc( sizeof("IP=255.255.255.255:65535") );
1499 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
1500 "IP=%s:%d",
1501 s != NULL ? s : SLAP_STRING_UNKNOWN, port );
1502 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1503 } break;
1504
1505 #ifdef LDAP_PF_INET6
1506 case AF_INET6: {
1507 char addr[INET6_ADDRSTRLEN];
1508 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
1509 addr, sizeof addr);
1510 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
1511 l.sl_name.bv_len = strlen(addr) + sizeof("IP=[]:65535");
1512 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
1513 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=[%s]:%d",
1514 addr, port );
1515 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1516 } break;
1517 #endif /* LDAP_PF_INET6 */
1518
1519 default:
1520 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
1521 (int) (*sal)->sa_family, 0, 0 );
1522 break;
1523 }
1524
1525 AC_MEMCPY(&l.sl_sa, *sal, addrlen);
1526 ber_str2bv( url, 0, 1, &l.sl_url);
1527 li = ch_malloc( sizeof( Listener ) );
1528 *li = l;
1529 slap_listeners[*cur] = li;
1530 (*cur)++;
1531 sal++;
1532 }
1533
1534 slap_free_listener_addresses(psal);
1535
1536 if ( l.sl_url.bv_val == NULL ) {
1537 Debug( LDAP_DEBUG_TRACE,
1538 "slap_open_listener: failed on %s\n", url, 0, 0 );
1539 return -1;
1540 }
1541
1542 Debug( LDAP_DEBUG_TRACE, "daemon: listener initialized %s\n",
1543 l.sl_url.bv_val, 0, 0 );
1544 return 0;
1545 }
1546
1547 static int sockinit(void);
1548 static int sockdestroy(void);
1549
1550 int
1551 slapd_daemon_init( const char *urls )
1552 {
1553 int i, j, n, rc;
1554 char **u;
1555
1556 Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
1557 urls ? urls : "<null>", 0, 0 );
1558
1559 ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1560 #ifdef HAVE_TCPD
1561 ldap_pvt_thread_mutex_init( &slap_daemon.sd_tcpd_mutex );
1562 #endif /* TCP Wrappers */
1563
1564 if( (rc = sockinit()) != 0 ) return rc;
1565
1566 #ifdef HAVE_SYSCONF
1567 dtblsize = sysconf( _SC_OPEN_MAX );
1568 #elif defined(HAVE_GETDTABLESIZE)
1569 dtblsize = getdtablesize();
1570 #else /* ! HAVE_SYSCONF && ! HAVE_GETDTABLESIZE */
1571 dtblsize = FD_SETSIZE;
1572 #endif /* ! HAVE_SYSCONF && ! HAVE_GETDTABLESIZE */
1573
1574 /* open a pipe (or something equivalent connected to itself).
1575 * we write a byte on this fd whenever we catch a signal. The main
1576 * loop will be select'ing on this socket, and will wake up when
1577 * this byte arrives.
1578 */
1579 if( (rc = lutil_pair( wake_sds )) < 0 ) {
1580 Debug( LDAP_DEBUG_ANY,
1581 "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
1582 return rc;
1583 }
1584
1585 SLAP_SOCK_INIT;
1586
1587 if( urls == NULL ) urls = "ldap:///";
1588
1589 u = ldap_str2charray( urls, " " );
1590
1591 if( u == NULL || u[0] == NULL ) {
1592 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1593 urls, 0, 0 );
1594 if ( u )
1595 ldap_charray_free( u );
1596 return -1;
1597 }
1598
1599 for( i=0; u[i] != NULL; i++ ) {
1600 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1601 u[i], 0, 0 );
1602 }
1603
1604 if( i == 0 ) {
1605 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1606 urls, 0, 0 );
1607 ldap_charray_free( u );
1608 return -1;
1609 }
1610
1611 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1612 i, 0, 0 );
1613 slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1614
1615 for(n = 0, j = 0; u[n]; n++ ) {
1616 if ( slap_open_listener( u[n], &i, &j ) ) {
1617 ldap_charray_free( u );
1618 return -1;
1619 }
1620 }
1621 slap_listeners[j] = NULL;
1622
1623 Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1624 i, 0, 0 );
1625
1626
1627 #ifdef HAVE_SLP
1628 if( slapd_register_slp ) {
1629 slapd_slp_init( urls );
1630 slapd_slp_reg();
1631 }
1632 #endif /* HAVE_SLP */
1633
1634 ldap_charray_free( u );
1635
1636 return !i;
1637 }
1638
1639
1640 int
1641 slapd_daemon_destroy( void )
1642 {
1643 connections_destroy();
1644 tcp_close( SLAP_FD2SOCK(wake_sds[1]) );
1645 tcp_close( SLAP_FD2SOCK(wake_sds[0]) );
1646 sockdestroy();
1647
1648 #ifdef HAVE_SLP
1649 if( slapd_register_slp ) {
1650 slapd_slp_dereg();
1651 slapd_slp_deinit();
1652 }
1653 #endif /* HAVE_SLP */
1654
1655 #ifdef HAVE_TCPD
1656 ldap_pvt_thread_mutex_destroy( &slap_daemon.sd_tcpd_mutex );
1657 #endif /* TCP Wrappers */
1658
1659 ldap_pvt_thread_mutex_destroy( &slap_daemon.sd_mutex );
1660 return 0;
1661 }
1662
1663
1664 static void
1665 close_listeners(
1666 int remove )
1667 {
1668 int l;
1669
1670 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1671 Listener *lr = slap_listeners[l];
1672
1673 if ( lr->sl_sd != AC_SOCKET_INVALID ) {
1674 if ( remove ) slapd_remove( lr->sl_sd, NULL, 0, 0, 0 );
1675
1676 #ifdef LDAP_PF_LOCAL
1677 if ( lr->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1678 unlink( lr->sl_sa.sa_un_addr.sun_path );
1679 }
1680 #endif /* LDAP_PF_LOCAL */
1681
1682 slapd_close( lr->sl_sd );
1683 }
1684
1685 if ( lr->sl_url.bv_val ) {
1686 ber_memfree( lr->sl_url.bv_val );
1687 }
1688
1689 if ( lr->sl_name.bv_val ) {
1690 ber_memfree( lr->sl_name.bv_val );
1691 }
1692
1693 free( lr );
1694 slap_listeners[l] = NULL;
1695 }
1696 }
1697
1698 static int
1699 slap_listener(
1700 Listener *sl )
1701 {
1702 Sockaddr from;
1703
1704 ber_socket_t s, sfd;
1705 ber_socklen_t len = sizeof(from);
1706 Connection *c;
1707 slap_ssf_t ssf = 0;
1708 struct berval authid = BER_BVNULL;
1709 #ifdef SLAPD_RLOOKUPS
1710 char hbuf[NI_MAXHOST];
1711 #endif /* SLAPD_RLOOKUPS */
1712
1713 char *dnsname = NULL;
1714 char *peeraddr = NULL;
1715 #ifdef LDAP_PF_LOCAL
1716 char peername[MAXPATHLEN + sizeof("PATH=")];
1717 #ifdef LDAP_PF_LOCAL_SENDMSG
1718 char peerbuf[8];
1719 struct berval peerbv = BER_BVNULL;
1720 #endif
1721 #elif defined(LDAP_PF_INET6)
1722 char peername[sizeof("IP=[ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]:65535")];
1723 #else /* ! LDAP_PF_LOCAL && ! LDAP_PF_INET6 */
1724 char peername[sizeof("IP=255.255.255.255:65336")];
1725 #endif /* LDAP_PF_LOCAL */
1726 int cflag;
1727
1728 Debug( LDAP_DEBUG_TRACE,
1729 ">>> slap_listener(%s)\n",
1730 sl->sl_url.bv_val, 0, 0 );
1731
1732 peername[0] = '\0';
1733
1734 #ifdef LDAP_CONNECTIONLESS
1735 if ( sl->sl_is_udp ) return 1;
1736 #endif /* LDAP_CONNECTIONLESS */
1737
1738 # ifdef LDAP_PF_LOCAL
1739 /* FIXME: apparently accept doesn't fill
1740 * the sun_path sun_path member */
1741 from.sa_un_addr.sun_path[0] = '\0';
1742 # endif /* LDAP_PF_LOCAL */
1743
1744 s = accept( SLAP_FD2SOCK( sl->sl_sd ), (struct sockaddr *) &from, &len );
1745
1746 /* Resume the listener FD to allow concurrent-processing of
1747 * additional incoming connections.
1748 */
1749 sl->sl_busy = 0;
1750 WAKE_LISTENER(1);
1751
1752 if ( s == AC_SOCKET_INVALID ) {
1753 int err = sock_errno();
1754
1755 if(
1756 #ifdef EMFILE
1757 err == EMFILE ||
1758 #endif /* EMFILE */
1759 #ifdef ENFILE
1760 err == ENFILE ||
1761 #endif /* ENFILE */
1762 0 )
1763 {
1764 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1765 emfile++;
1766 /* Stop listening until an existing session closes */
1767 sl->sl_mute = 1;
1768 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1769 }
1770
1771 Debug( LDAP_DEBUG_ANY,
1772 "daemon: accept(%ld) failed errno=%d (%s)\n",
1773 (long) sl->sl_sd, err, sock_errstr(err) );
1774 ldap_pvt_thread_yield();
1775 return 0;
1776 }
1777 sfd = SLAP_SOCKNEW( s );
1778
1779 /* make sure descriptor number isn't too great */
1780 if ( sfd >= dtblsize ) {
1781 Debug( LDAP_DEBUG_ANY,
1782 "daemon: %ld beyond descriptor table size %ld\n",
1783 (long) sfd, (long) dtblsize, 0 );
1784
1785 tcp_close(s);
1786 ldap_pvt_thread_yield();
1787 return 0;
1788 }
1789
1790 #ifdef LDAP_DEBUG
1791 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1792 /* newly accepted stream should not be in any of the FD SETS */
1793 assert( SLAP_SOCK_NOT_ACTIVE( sfd ));
1794 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1795 #endif /* LDAP_DEBUG */
1796
1797 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1798 #ifdef LDAP_PF_LOCAL
1799 /* for IPv4 and IPv6 sockets only */
1800 if ( from.sa_addr.sa_family != AF_LOCAL )
1801 #endif /* LDAP_PF_LOCAL */
1802 {
1803 int rc;
1804 int tmp;
1805 #ifdef SO_KEEPALIVE
1806 /* enable keep alives */
1807 tmp = 1;
1808 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1809 (char *) &tmp, sizeof(tmp) );
1810 if ( rc == AC_SOCKET_ERROR ) {
1811 int err = sock_errno();
1812 Debug( LDAP_DEBUG_ANY,
1813 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1814 "errno=%d (%s)\n", (long) sfd, err, sock_errstr(err) );
1815 }
1816 #endif /* SO_KEEPALIVE */
1817 #ifdef TCP_NODELAY
1818 /* enable no delay */
1819 tmp = 1;
1820 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1821 (char *)&tmp, sizeof(tmp) );
1822 if ( rc == AC_SOCKET_ERROR ) {
1823 int err = sock_errno();
1824 Debug( LDAP_DEBUG_ANY,
1825 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1826 "errno=%d (%s)\n", (long) sfd, err, sock_errstr(err) );
1827 }
1828 #endif /* TCP_NODELAY */
1829 }
1830 #endif /* SO_KEEPALIVE || TCP_NODELAY */
1831
1832 Debug( LDAP_DEBUG_CONNS,
1833 "daemon: listen=%ld, new connection on %ld\n",
1834 (long) sl->sl_sd, (long) sfd, 0 );
1835
1836 cflag = 0;
1837 switch ( from.sa_addr.sa_family ) {
1838 # ifdef LDAP_PF_LOCAL
1839 case AF_LOCAL:
1840 cflag |= CONN_IS_IPC;
1841
1842 /* FIXME: apparently accept doesn't fill
1843 * the sun_path sun_path member */
1844 if ( from.sa_un_addr.sun_path[0] == '\0' ) {
1845 AC_MEMCPY( from.sa_un_addr.sun_path,
1846 sl->sl_sa.sa_un_addr.sun_path,
1847 sizeof( from.sa_un_addr.sun_path ) );
1848 }
1849
1850 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1851 ssf = local_ssf;
1852 {
1853 uid_t uid;
1854 gid_t gid;
1855
1856 #ifdef LDAP_PF_LOCAL_SENDMSG
1857 peerbv.bv_val = peerbuf;
1858 peerbv.bv_len = sizeof( peerbuf );
1859 #endif
1860 if( LUTIL_GETPEEREID( s, &uid, &gid, &peerbv ) == 0 ) {
1861 authid.bv_val = ch_malloc(
1862 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1863 "cn=peercred,cn=external,cn=auth" ) + 1 );
1864 authid.bv_len = sprintf( authid.bv_val,
1865 "gidNumber=%d+uidNumber=%d,"
1866 "cn=peercred,cn=external,cn=auth",
1867 (int) gid, (int) uid );
1868 assert( authid.bv_len <=
1869 STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1870 "cn=peercred,cn=external,cn=auth" ) );
1871 }
1872 }
1873 dnsname = "local";
1874 break;
1875 #endif /* LDAP_PF_LOCAL */
1876
1877 # ifdef LDAP_PF_INET6
1878 case AF_INET6:
1879 if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1880 peeraddr = inet_ntoa( *((struct in_addr *)
1881 &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1882 sprintf( peername, "IP=%s:%d",
1883 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1884 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1885 } else {
1886 char addr[INET6_ADDRSTRLEN];
1887
1888 peeraddr = (char *) inet_ntop( AF_INET6,
1889 &from.sa_in6_addr.sin6_addr,
1890 addr, sizeof addr );
1891 sprintf( peername, "IP=[%s]:%d",
1892 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1893 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1894 }
1895 break;
1896 # endif /* LDAP_PF_INET6 */
1897
1898 case AF_INET:
1899 peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1900 sprintf( peername, "IP=%s:%d",
1901 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1902 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1903 break;
1904
1905 default:
1906 slapd_close(sfd);
1907 return 0;
1908 }
1909
1910 if ( ( from.sa_addr.sa_family == AF_INET )
1911 #ifdef LDAP_PF_INET6
1912 || ( from.sa_addr.sa_family == AF_INET6 )
1913 #endif /* LDAP_PF_INET6 */
1914 )
1915 {
1916 dnsname = NULL;
1917 #ifdef SLAPD_RLOOKUPS
1918 if ( use_reverse_lookup ) {
1919 char *herr;
1920 if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
1921 sizeof(hbuf), &herr ) == 0) {
1922 ldap_pvt_str2lower( hbuf );
1923 dnsname = hbuf;
1924 }
1925 }
1926 #endif /* SLAPD_RLOOKUPS */
1927
1928 #ifdef HAVE_TCPD
1929 {
1930 int rc;
1931 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_tcpd_mutex );
1932 rc = hosts_ctl("slapd",
1933 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1934 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1935 SLAP_STRING_UNKNOWN );
1936 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_tcpd_mutex );
1937 if ( !rc ) {
1938 /* DENY ACCESS */
1939 Statslog( LDAP_DEBUG_STATS,
1940 "fd=%ld DENIED from %s (%s)\n",
1941 (long) sfd,
1942 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1943 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1944 0, 0 );
1945 slapd_close(sfd);
1946 return 0;
1947 }
1948 }
1949 #endif /* HAVE_TCPD */
1950 }
1951
1952 #ifdef HAVE_TLS
1953 if ( sl->sl_is_tls ) cflag |= CONN_IS_TLS;
1954 #endif
1955 c = connection_init(sfd, sl,
1956 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1957 peername, cflag, ssf,
1958 authid.bv_val ? &authid : NULL
1959 LDAP_PF_LOCAL_SENDMSG_ARG(&peerbv));
1960
1961 if( authid.bv_val ) ch_free(authid.bv_val);
1962
1963 if( !c ) {
1964 Debug( LDAP_DEBUG_ANY,
1965 "daemon: connection_init(%ld, %s, %s) failed.\n",
1966 (long) sfd, peername, sl->sl_name.bv_val );
1967 slapd_close(sfd);
1968 return 0;
1969 }
1970
1971 Statslog( LDAP_DEBUG_STATS,
1972 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1973 c->c_connid, (long) sfd, peername, sl->sl_name.bv_val,
1974 0 );
1975
1976 return 0;
1977 }
1978
1979 static void*
1980 slap_listener_thread(
1981 void* ctx,
1982 void* ptr )
1983 {
1984 int rc;
1985 Listener *sl = (Listener *)ptr;
1986
1987 rc = slap_listener( sl );
1988
1989 if( rc != LDAP_SUCCESS ) {
1990 Debug( LDAP_DEBUG_ANY,
1991 "slap_listener_thread(%s): failed err=%d",
1992 sl->sl_url.bv_val, rc, 0 );
1993 }
1994
1995 return (void*)NULL;
1996 }
1997
1998 static int
1999 slap_listener_activate(
2000 Listener* sl )
2001 {
2002 int rc;
2003
2004 Debug( LDAP_DEBUG_TRACE, "slap_listener_activate(%d): %s\n",
2005 sl->sl_sd, sl->sl_busy ? "busy" : "", 0 );
2006
2007 sl->sl_busy++;
2008
2009 rc = ldap_pvt_thread_pool_submit( &connection_pool,
2010 slap_listener_thread, (void *) sl );
2011
2012 if( rc != 0 ) {
2013 Debug( LDAP_DEBUG_ANY,
2014 "listener_activate(%d): submit failed (%d)\n",
2015 sl->sl_sd, rc, 0 );
2016 }
2017 return rc;
2018 }
2019
2020 static void *
2021 slapd_daemon_task(
2022 void *ptr )
2023 {
2024 int l;
2025 time_t last_idle_check = 0;
2026 struct timeval idle;
2027 int ebadf = 0;
2028
2029 #define SLAPD_IDLE_CHECK_LIMIT 4
2030
2031 if ( global_idletimeout > 0 ) {
2032 last_idle_check = slap_get_time();
2033 /* Set the select timeout.
2034 * Don't just truncate, preserve the fractions of
2035 * seconds to prevent sleeping for zero time.
2036 */
2037 idle.tv_sec = global_idletimeout / SLAPD_IDLE_CHECK_LIMIT;
2038 idle.tv_usec = global_idletimeout - \
2039 ( idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT );
2040 idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
2041 } else {
2042 idle.tv_sec = 0;
2043 idle.tv_usec = 0;
2044 }
2045
2046 slapd_add( wake_sds[0], 0, NULL );
2047
2048 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2049 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
2050
2051 #ifdef LDAP_CONNECTIONLESS
2052 /* Since this is connectionless, the data port is the
2053 * listening port. The listen() and accept() calls
2054 * are unnecessary.
2055 */
2056 if ( slap_listeners[l]->sl_is_udp )
2057 continue;
2058 #endif /* LDAP_CONNECTIONLESS */
2059
2060 if ( listen( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ), SLAPD_LISTEN_BACKLOG ) == -1 ) {
2061 int err = sock_errno();
2062
2063 #ifdef LDAP_PF_INET6
2064 /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
2065 * we are already listening to in6addr_any, then we want to ignore
2066 * this and continue.
2067 */
2068 if ( err == EADDRINUSE ) {
2069 int i;
2070 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
2071 struct sockaddr_in6 sa6;
2072
2073 if ( sa.sin_family == AF_INET &&
2074 sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
2075 for ( i = 0 ; i < l; i++ ) {
2076 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
2077 if ( sa6.sin6_family == AF_INET6 &&
2078 !memcmp( &sa6.sin6_addr, &in6addr_any,
2079 sizeof(struct in6_addr) ) )
2080 {
2081 break;
2082 }
2083 }
2084
2085 if ( i < l ) {
2086 /* We are already listening to in6addr_any */
2087 Debug( LDAP_DEBUG_CONNS,
2088 "daemon: Attempt to listen to 0.0.0.0 failed, "
2089 "already listening on ::, assuming IPv4 included\n",
2090 0, 0, 0 );
2091 slapd_close( slap_listeners[l]->sl_sd );
2092 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
2093 continue;
2094 }
2095 }
2096 }
2097 #endif /* LDAP_PF_INET6 */
2098 Debug( LDAP_DEBUG_ANY,
2099 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
2100 slap_listeners[l]->sl_url.bv_val, err,
2101 sock_errstr(err) );
2102 return (void*)-1;
2103 }
2104
2105 /* make the listening socket non-blocking */
2106 if ( ber_pvt_socket_set_nonblock( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ), 1 ) < 0 ) {
2107 Debug( LDAP_DEBUG_ANY, "slapd_daemon_task: "
2108 "set nonblocking on a listening socket failed\n",
2109 0, 0, 0 );
2110 slapd_shutdown = 2;
2111 return (void*)-1;
2112 }
2113
2114 slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l] );
2115 }
2116
2117 #ifdef HAVE_NT_SERVICE_MANAGER
2118 if ( started_event != NULL ) {
2119 ldap_pvt_thread_cond_signal( &started_event );
2120 }
2121 #endif /* HAVE_NT_SERVICE_MANAGER */
2122
2123 /* initialization complete. Here comes the loop. */
2124
2125 while ( !slapd_shutdown ) {
2126 ber_socket_t i;
2127 int ns, nwriters;
2128 int at;
2129 ber_socket_t nfds;
2130 #if SLAP_EVENTS_ARE_INDEXED
2131 ber_socket_t nrfds, nwfds;
2132 #endif /* SLAP_EVENTS_ARE_INDEXED */
2133 #define SLAPD_EBADF_LIMIT 16
2134
2135 time_t now;
2136
2137 SLAP_EVENT_DECL;
2138
2139 struct timeval tv;
2140 struct timeval *tvp;
2141
2142 struct timeval cat;
2143 time_t tdelta = 1;
2144 struct re_s* rtask;
2145
2146 now = slap_get_time();
2147
2148 if ( ( global_idletimeout > 0 ) &&
2149 difftime( last_idle_check +
2150 global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 )
2151 {
2152 connections_timeout_idle( now );
2153 last_idle_check = now;
2154 }
2155 tv = idle;
2156
2157 #ifdef SIGHUP
2158 if ( slapd_gentle_shutdown ) {
2159 ber_socket_t active;
2160
2161 if ( slapd_gentle_shutdown == 1 ) {
2162 BackendDB *be;
2163 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
2164 close_listeners( 1 );
2165 frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
2166 LDAP_STAILQ_FOREACH(be, &backendDB, be_next) {
2167 be->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
2168 }
2169 slapd_gentle_shutdown = 2;
2170 }
2171
2172 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
2173 active = slap_daemon.sd_nactives;
2174 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
2175 if ( active == 0 ) {
2176 slapd_shutdown = 1;
2177 break;
2178 }
2179 }
2180 #endif /* SIGHUP */
2181 at = 0;
2182
2183 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
2184
2185 nwriters = slap_daemon.sd_nwriters;
2186
2187 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2188 Listener *lr = slap_listeners[l];
2189
2190 if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
2191
2192 if ( lr->sl_mute || lr->sl_busy )
2193 {
2194 SLAP_SOCK_CLR_READ( lr->sl_sd );
2195 } else {
2196 SLAP_SOCK_SET_READ( lr->sl_sd );
2197 }
2198 }
2199
2200 SLAP_EVENT_INIT;
2201
2202 nfds = SLAP_EVENT_MAX;
2203
2204 if ( global_idletimeout && slap_daemon.sd_nactives ) at = 1;
2205
2206 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
2207
2208 if ( at
2209 #if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
2210 && ( tv.tv_sec || tv.tv_usec )
2211 #endif /* HAVE_YIELDING_SELECT || NO_THREADS */
2212 )
2213 {
2214 tvp = &tv;
2215 } else {
2216 tvp = NULL;
2217 }
2218
2219 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
2220 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
2221 while ( rtask && cat.tv_sec && cat.tv_sec <= now ) {
2222 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
2223 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
2224 } else {
2225 ldap_pvt_runqueue_runtask( &slapd_rq, rtask );
2226 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
2227 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
2228 ldap_pvt_thread_pool_submit( &connection_pool,
2229 rtask->routine, (void *) rtask );
2230 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
2231 }
2232 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
2233 }
2234 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
2235
2236 if ( rtask && cat.tv_sec ) {
2237 /* NOTE: diff __should__ always be >= 0,
2238 * AFAI understand; however (ITS#4872),
2239 * time_t might be unsigned in some systems,
2240 * while difftime() returns a double */
2241 double diff = difftime( cat.tv_sec, now );
2242 if ( diff <= 0 ) {
2243 diff = tdelta;
2244 }
2245 if ( tvp == NULL || diff < tv.tv_sec ) {
2246 tv.tv_sec = diff;
2247 tv.tv_usec = 0;
2248 tvp = &tv;
2249 }
2250 }
2251
2252 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2253 Listener *lr = slap_listeners[l];
2254
2255 if ( lr->sl_sd == AC_SOCKET_INVALID ) {
2256 continue;
2257 }
2258
2259 if ( lr->sl_mute ) {
2260 Debug( LDAP_DEBUG_CONNS,
2261 "daemon: " SLAP_EVENT_FNAME ": "
2262 "listen=%d muted\n",
2263 lr->sl_sd, 0, 0 );
2264 continue;
2265 }
2266
2267 if ( lr->sl_busy ) {
2268 Debug( LDAP_DEBUG_CONNS,
2269 "daemon: " SLAP_EVENT_FNAME ": "
2270 "listen=%d busy\n",
2271 lr->sl_sd, 0, 0 );
2272 continue;
2273 }
2274
2275 Debug( LDAP_DEBUG_CONNS,
2276 "daemon: " SLAP_EVENT_FNAME ": "
2277 "listen=%d active_threads=%d tvp=%s\n",
2278 lr->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
2279 }
2280
2281 SLAP_EVENT_WAIT( tvp, &ns );
2282 switch ( ns ) {
2283 case -1: { /* failure - try again */
2284 int err = sock_errno();
2285
2286 if ( err != EINTR ) {
2287 ebadf++;
2288
2289 /* Don't log unless we got it twice in a row */
2290 if ( !( ebadf & 1 ) ) {
2291 Debug( LDAP_DEBUG_ANY,
2292 "daemon: "
2293 SLAP_EVENT_FNAME
2294 "failed count %d "
2295 "err (%d): %s\n",
2296 ebadf, err,
2297 sock_errstr( err ) );
2298 }
2299 if ( ebadf >= SLAPD_EBADF_LIMIT ) {
2300 slapd_shutdown = 2;
2301 }
2302 }
2303 }
2304 continue;
2305
2306 case 0: /* timeout - let threads run */
2307 ebadf = 0;
2308 #ifndef HAVE_YIELDING_SELECT
2309 Debug( LDAP_DEBUG_CONNS, "daemon: " SLAP_EVENT_FNAME
2310 "timeout - yielding\n",
2311 0, 0, 0 );
2312
2313 ldap_pvt_thread_yield();
2314 #endif /* ! HAVE_YIELDING_SELECT */
2315 continue;
2316
2317 default: /* something happened - deal with it */
2318 if ( slapd_shutdown ) continue;
2319
2320 ebadf = 0;
2321 Debug( LDAP_DEBUG_CONNS,
2322 "daemon: activity on %d descriptor%s\n",
2323 ns, ns != 1 ? "s" : "", 0 );
2324 /* FALL THRU */
2325 }
2326
2327 #if SLAP_EVENTS_ARE_INDEXED
2328 if ( SLAP_EVENT_IS_READ( wake_sds[0] ) ) {
2329 char c[BUFSIZ];
2330 SLAP_EVENT_CLR_READ( wake_sds[0] );
2331 waking = 0;
2332 tcp_read( SLAP_FD2SOCK(wake_sds[0]), c, sizeof(c) );
2333 Debug( LDAP_DEBUG_CONNS, "daemon: waked\n", 0, 0, 0 );
2334 continue;
2335 }
2336
2337 /* The event slot equals the descriptor number - this is
2338 * true for Unix select and poll. We treat Windows select
2339 * like this too, even though it's a kludge.
2340 */
2341 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2342 int rc;
2343
2344 if ( ns <= 0 ) break;
2345 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
2346 #ifdef LDAP_CONNECTIONLESS
2347 if ( slap_listeners[l]->sl_is_udp ) continue;
2348 #endif /* LDAP_CONNECTIONLESS */
2349 if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd ) ) continue;
2350
2351 /* clear events */
2352 SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
2353 SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
2354 ns--;
2355
2356 rc = slap_listener_activate( slap_listeners[l] );
2357 }
2358
2359 /* bypass the following tests if no descriptors left */
2360 if ( ns <= 0 ) {
2361 #ifndef HAVE_YIELDING_SELECT
2362 ldap_pvt_thread_yield();
2363 #endif /* HAVE_YIELDING_SELECT */
2364 continue;
2365 }
2366
2367 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
2368 nrfds = 0;
2369 nwfds = 0;
2370 for ( i = 0; i < nfds; i++ ) {
2371 int r, w;
2372
2373 r = SLAP_EVENT_IS_READ( i );
2374 /* writefds was not initialized if nwriters was zero */
2375 w = nwriters ? SLAP_EVENT_IS_WRITE( i ) : 0;
2376 if ( r || w ) {
2377 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
2378 r ? "r" : "", w ? "w" : "" );
2379 if ( r ) {
2380 nrfds++;
2381 ns--;
2382 }
2383 if ( w ) {
2384 nwfds++;
2385 ns--;
2386 }
2387 }
2388 if ( ns <= 0 ) break;
2389 }
2390 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2391
2392 /* loop through the writers */
2393 for ( i = 0; nwfds > 0; i++ ) {
2394 ber_socket_t wd;
2395 if ( ! SLAP_EVENT_IS_WRITE( i ) ) continue;
2396 wd = i;
2397
2398 SLAP_EVENT_CLR_WRITE( wd );
2399 nwfds--;
2400
2401 Debug( LDAP_DEBUG_CONNS,
2402 "daemon: write active on %d\n",
2403 wd, 0, 0 );
2404
2405 /*
2406 * NOTE: it is possible that the connection was closed
2407 * and that the stream is now inactive.
2408 * connection_write() must validate the stream is still
2409 * active.
2410 *
2411 * ITS#4338: if the stream is invalid, there is no need to
2412 * close it here. It has already been closed in connection.c.
2413 */
2414 if ( connection_write( wd ) < 0 ) {
2415 if ( SLAP_EVENT_IS_READ( wd ) ) {
2416 SLAP_EVENT_CLR_READ( (unsigned) wd );
2417 nrfds--;
2418 }
2419 }
2420 }
2421
2422 for ( i = 0; nrfds > 0; i++ ) {
2423 ber_socket_t rd;
2424 if ( ! SLAP_EVENT_IS_READ( i ) ) continue;
2425 rd = i;
2426 SLAP_EVENT_CLR_READ( rd );
2427 nrfds--;
2428
2429 Debug ( LDAP_DEBUG_CONNS,
2430 "daemon: read activity on %d\n", rd, 0, 0 );
2431 /*
2432 * NOTE: it is possible that the connection was closed
2433 * and that the stream is now inactive.
2434 * connection_read() must valid the stream is still
2435 * active.
2436 */
2437
2438 connection_read_activate( rd );
2439 }
2440 #else /* !SLAP_EVENTS_ARE_INDEXED */
2441 /* FIXME */
2442 /* The events are returned in an arbitrary list. This is true
2443 * for /dev/poll, epoll and kqueue. In order to prioritize things
2444 * so that we can handle wake_sds first, listeners second, and then
2445 * all other connections last (as we do for select), we would need
2446 * to use multiple event handles and cascade them.
2447 *
2448 * That seems like a bit of hassle. So the wake_sds check has been
2449 * skipped. For epoll and kqueue we can associate arbitrary data with
2450 * an event, so we could use pointers to the listener structure
2451 * instead of just the file descriptor. For /dev/poll we have to
2452 * search the listeners array for a matching descriptor.
2453 *
2454 * We now handle wake events when we see them; they are not given
2455 * higher priority.
2456 */
2457 #ifdef LDAP_DEBUG
2458 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
2459
2460 for ( i = 0; i < ns; i++ ) {
2461 int r, w, fd;
2462
2463 /* Don't log listener events */
2464 if ( SLAP_EVENT_IS_LISTENER( i )
2465 #ifdef LDAP_CONNECTIONLESS
2466 && !( (SLAP_EVENT_LISTENER( i ))->sl_is_udp )
2467 #endif /* LDAP_CONNECTIONLESS */
2468 )
2469 {
2470 continue;
2471 }
2472
2473 fd = SLAP_EVENT_FD( i );
2474 /* Don't log internal wake events */
2475 if ( fd == wake_sds[0] ) continue;
2476
2477 r = SLAP_EVENT_IS_READ( i );
2478 w = SLAP_EVENT_IS_WRITE( i );
2479 if ( r || w ) {
2480 Debug( LDAP_DEBUG_CONNS, " %d%s%s", fd,
2481 r ? "r" : "", w ? "w" : "" );
2482 }
2483 }
2484 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2485 #endif /* LDAP_DEBUG */
2486
2487 for ( i = 0; i < ns; i++ ) {
2488 int rc = 1, fd;
2489
2490 if ( SLAP_EVENT_IS_LISTENER( i ) ) {
2491 rc = slap_listener_activate( SLAP_EVENT_LISTENER( i ) );
2492 }
2493
2494 /* If we found a regular listener, rc is now zero, and we
2495 * can skip the data portion. But if it was a UDP listener
2496 * then rc is still 1, and we want to handle the data.
2497 */
2498 if ( rc ) {
2499 fd = SLAP_EVENT_FD( i );
2500
2501 /* Handle wake events */
2502 if ( fd == wake_sds[0] ) {
2503 char c[BUFSIZ];
2504 waking = 0;
2505 tcp_read( SLAP_FD2SOCK(wake_sds[0]), c, sizeof(c) );
2506 break;
2507 }
2508
2509 if ( SLAP_EVENT_IS_WRITE( i ) ) {
2510 Debug( LDAP_DEBUG_CONNS,
2511 "daemon: write active on %d\n",
2512 fd, 0, 0 );
2513
2514 SLAP_EVENT_CLR_WRITE( i );
2515
2516 /*
2517 * NOTE: it is possible that the connection was closed
2518 * and that the stream is now inactive.
2519 * connection_write() must valid the stream is still
2520 * active.
2521 */
2522 if ( connection_write( fd ) < 0 ) {
2523 continue;
2524 }
2525 }
2526 /* If event is a read */
2527 if ( SLAP_EVENT_IS_READ( i ) ) {
2528 Debug( LDAP_DEBUG_CONNS,
2529 "daemon: read active on %d\n",
2530 fd, 0, 0 );
2531
2532 SLAP_EVENT_CLR_READ( i );
2533 connection_read_activate( fd );
2534 } else {
2535 Debug( LDAP_DEBUG_CONNS,
2536 "daemon: hangup on %d\n", fd, 0, 0 );
2537 }
2538 }
2539 }
2540 #endif /* SLAP_EVENTS_ARE_INDEXED */
2541
2542 #ifndef HAVE_YIELDING_SELECT
2543 ldap_pvt_thread_yield();
2544 #endif /* ! HAVE_YIELDING_SELECT */
2545 }
2546
2547 if ( slapd_shutdown == 1 ) {
2548 Debug( LDAP_DEBUG_ANY,
2549 "daemon: shutdown requested and initiated.\n",
2550 0, 0, 0 );
2551
2552 } else if ( slapd_shutdown == 2 ) {
2553 #ifdef HAVE_NT_SERVICE_MANAGER
2554 Debug( LDAP_DEBUG_ANY,
2555 "daemon: shutdown initiated by Service Manager.\n",
2556 0, 0, 0);
2557 #else /* !HAVE_NT_SERVICE_MANAGER */
2558 Debug( LDAP_DEBUG_ANY,
2559 "daemon: abnormal condition, shutdown initiated.\n",
2560 0, 0, 0 );
2561 #endif /* !HAVE_NT_SERVICE_MANAGER */
2562 } else {
2563 Debug( LDAP_DEBUG_ANY,
2564 "daemon: no active streams, shutdown initiated.\n",
2565 0, 0, 0 );
2566 }
2567
2568 if ( slapd_gentle_shutdown != 2 ) close_listeners ( 0 );
2569
2570 if ( !slapd_gentle_shutdown ) {
2571 slapd_abrupt_shutdown = 1;
2572 connections_shutdown();
2573 }
2574
2575 Debug( LDAP_DEBUG_ANY,
2576 "slapd shutdown: waiting for %d threads to terminate\n",
2577 ldap_pvt_thread_pool_backload( &connection_pool ), 0, 0 );
2578 ldap_pvt_thread_pool_destroy( &connection_pool, 1 );
2579
2580 free( slap_listeners );
2581 slap_listeners = NULL;
2582
2583 return NULL;
2584 }
2585
2586
2587 #ifdef LDAP_CONNECTIONLESS
2588 static int
2589 connectionless_init( void )
2590 {
2591 int l;
2592
2593 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2594 Listener *lr = slap_listeners[l];
2595 Connection *c;
2596
2597 if ( !lr->sl_is_udp ) {
2598 continue;
2599 }
2600
2601 c = connection_init( lr->sl_sd, lr, "", "",
2602 CONN_IS_UDP, (slap_ssf_t) 0, NULL
2603 LDAP_PF_LOCAL_SENDMSG_ARG(NULL));
2604
2605 if ( !c ) {
2606 Debug( LDAP_DEBUG_TRACE,
2607 "connectionless_init: failed on %s (%d)\n",
2608 lr->sl_url, lr->sl_sd, 0 );
2609 return -1;
2610 }
2611 lr->sl_is_udp++;
2612 }
2613
2614 return 0;
2615 }
2616 #endif /* LDAP_CONNECTIONLESS */
2617
2618 int
2619 slapd_daemon( void )
2620 {
2621 int rc;
2622
2623 #ifdef LDAP_CONNECTIONLESS
2624 connectionless_init();
2625 #endif /* LDAP_CONNECTIONLESS */
2626
2627 #define SLAPD_LISTENER_THREAD 1
2628 #if defined( SLAPD_LISTENER_THREAD )
2629 {
2630 ldap_pvt_thread_t listener_tid;
2631
2632 /* listener as a separate THREAD */
2633 rc = ldap_pvt_thread_create( &listener_tid,
2634 0, slapd_daemon_task, NULL );
2635
2636 if ( rc != 0 ) {
2637 Debug( LDAP_DEBUG_ANY,
2638 "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2639 return rc;
2640 }
2641
2642 /* wait for the listener thread to complete */
2643 ldap_pvt_thread_join( listener_tid, (void *)NULL );
2644 }
2645 #else /* ! SLAPD_LISTENER_THREAD */
2646 /* experimental code */
2647 slapd_daemon_task( NULL );
2648 #endif /* ! SLAPD_LISTENER_THREAD */
2649
2650 return 0;
2651 }
2652
2653 static int
2654 sockinit( void )
2655 {
2656 #if defined( HAVE_WINSOCK2 )
2657 WORD wVersionRequested;
2658 WSADATA wsaData;
2659 int err;
2660
2661 wVersionRequested = MAKEWORD( 2, 0 );
2662
2663 err = WSAStartup( wVersionRequested, &wsaData );
2664 if ( err != 0 ) {
2665 /* Tell the user that we couldn't find a usable */
2666 /* WinSock DLL. */
2667 return -1;
2668 }
2669
2670 /* Confirm that the WinSock DLL supports 2.0.*/
2671 /* Note that if the DLL supports versions greater */
2672 /* than 2.0 in addition to 2.0, it will still return */
2673 /* 2.0 in wVersion since that is the version we */
2674 /* requested. */
2675
2676 if ( LOBYTE( wsaData.wVersion ) != 2 ||
2677 HIBYTE( wsaData.wVersion ) != 0 )
2678 {
2679 /* Tell the user that we couldn't find a usable */
2680 /* WinSock DLL. */
2681 WSACleanup();
2682 return -1;
2683 }
2684
2685 /* The WinSock DLL is acceptable. Proceed. */
2686 #elif defined( HAVE_WINSOCK )
2687 WSADATA wsaData;
2688 if ( WSAStartup( 0x0101, &wsaData ) != 0 ) return -1;
2689 #endif /* ! HAVE_WINSOCK2 && ! HAVE_WINSOCK */
2690
2691 return 0;
2692 }
2693
2694 static int
2695 sockdestroy( void )
2696 {
2697 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2698 WSACleanup();
2699 #endif /* HAVE_WINSOCK2 || HAVE_WINSOCK */
2700 SLAP_SOCK_DESTROY;
2701
2702 return 0;
2703 }
2704
2705 RETSIGTYPE
2706 slap_sig_shutdown( int sig )
2707 {
2708 #if 0
2709 Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2710 #endif
2711
2712 /*
2713 * If the NT Service Manager is controlling the server, we don't
2714 * want SIGBREAK to kill the server. For some strange reason,
2715 * SIGBREAK is generated when a user logs out.
2716 */
2717
2718 #if defined(HAVE_NT_SERVICE_MANAGER) && defined(SIGBREAK)
2719 if (is_NT_Service && sig == SIGBREAK) {
2720 /* empty */;
2721 } else
2722 #endif /* HAVE_NT_SERVICE_MANAGER && SIGBREAK */
2723 #ifdef SIGHUP
2724 if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0) {
2725 slapd_gentle_shutdown = 1;
2726 } else
2727 #endif /* SIGHUP */
2728 {
2729 slapd_shutdown = 1;
2730 }
2731
2732 WAKE_LISTENER(1);
2733
2734 /* reinstall self */
2735 (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2736 }
2737
2738 RETSIGTYPE
2739 slap_sig_wake( int sig )
2740 {
2741 WAKE_LISTENER(1);
2742
2743 /* reinstall self */
2744 (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2745 }
2746
2747
2748 void
2749 slapd_add_internal( ber_socket_t s, int isactive )
2750 {
2751 slapd_add( s, isactive, NULL );
2752 }
2753
2754 Listener **
2755 slapd_get_listeners( void )
2756 {
2757 return slap_listeners;
2758 }
2759
2760 void
2761 slap_wake_listener()
2762 {
2763 WAKE_LISTENER(1);
2764 }
NetBSD on the FriendlyARM MINI2440