git.sur5r.net Git - openldap/blob - servers/slapd/daemon.c

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2015 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 #ifndef SLAPD_MAX_DAEMON_THREADS
  77 #define SLAPD_MAX_DAEMON_THREADS        16
  78 #endif
  79 int slapd_daemon_threads = 1;
  80 int slapd_daemon_mask;
  81
  82 #ifdef LDAP_TCP_BUFFER
  83 int slapd_tcp_rmem;
  84 int slapd_tcp_wmem;
  85 #endif /* LDAP_TCP_BUFFER */
  86
  87 Listener **slap_listeners = NULL;
  88 static volatile sig_atomic_t listening = 1; /* 0 when slap_listeners closed */
  89 static ldap_pvt_thread_t *listener_tid;
  90
  91 #ifndef SLAPD_LISTEN_BACKLOG
  92 #define SLAPD_LISTEN_BACKLOG 1024
  93 #endif /* ! SLAPD_LISTEN_BACKLOG */
  94
  95 #define DAEMON_ID(fd)   (fd & slapd_daemon_mask)
  96
  97 static ber_socket_t wake_sds[SLAPD_MAX_DAEMON_THREADS][2];
  98 static int emfile;
  99
 100 static time_t chk_writetime;
 101
 102 static volatile int waking;
 103 #ifdef NO_THREADS
 104 #define WAKE_LISTENER(l,w)      do { \
 105         if ((w) && ++waking < 5) { \
 106                 tcp_write( SLAP_FD2SOCK(wake_sds[l][1]), "0", 1 ); \
 107         } \
 108 } while (0)
 109 #else /* ! NO_THREADS */
 110 #define WAKE_LISTENER(l,w)      do { \
 111         if (w) { \
 112                 tcp_write( SLAP_FD2SOCK(wake_sds[l][1]), "0", 1 ); \
 113         } \
 114 } while (0)
 115 #endif /* ! NO_THREADS */
 116
 117 volatile sig_atomic_t slapd_shutdown = 0;
 118 volatile sig_atomic_t slapd_gentle_shutdown = 0;
 119 volatile sig_atomic_t slapd_abrupt_shutdown = 0;
 120
 121 #ifdef HAVE_WINSOCK
 122 ldap_pvt_thread_mutex_t slapd_ws_mutex;
 123 SOCKET *slapd_ws_sockets;
 124 #define SD_READ 1
 125 #define SD_WRITE        2
 126 #define SD_ACTIVE       4
 127 #define SD_LISTENER     8
 128 #endif
 129
 130 #ifdef HAVE_TCPD
 131 static ldap_pvt_thread_mutex_t  sd_tcpd_mutex;
 132 #endif /* TCP Wrappers */
 133
 134 typedef struct slap_daemon_st {
 135         ldap_pvt_thread_mutex_t sd_mutex;
 136
 137         ber_socket_t            sd_nactives;
 138         int                     sd_nwriters;
 139         int                     sd_nfds;
 140
 141 #if defined(HAVE_EPOLL)
 142         struct epoll_event      *sd_epolls;
 143         int                     *sd_index;
 144         int                     sd_epfd;
 145 #elif defined(SLAP_X_DEVPOLL) && defined(HAVE_DEVPOLL)
 146         /* eXperimental */
 147         struct pollfd           *sd_pollfd;
 148         int                     *sd_index;
 149         Listener                **sd_l;
 150         int                     sd_dpfd;
 151 #else /* ! epoll && ! /dev/poll */
 152 #ifdef HAVE_WINSOCK
 153         char    *sd_flags;
 154         char    *sd_rflags;
 155 #else /* ! HAVE_WINSOCK */
 156         fd_set                  sd_actives;
 157         fd_set                  sd_readers;
 158         fd_set                  sd_writers;
 159 #endif /* ! HAVE_WINSOCK */
 160 #endif /* ! epoll && ! /dev/poll */
 161 } slap_daemon_st;
 162
 163 static slap_daemon_st slap_daemon[SLAPD_MAX_DAEMON_THREADS];
 164
 165 /*
 166  * NOTE: naming convention for macros:
 167  *
 168  * - SLAP_SOCK_* and SLAP_EVENT_* for public interface that deals
 169  *   with file descriptors and events respectively
 170  *
 171  * - SLAP_<type>_* for private interface; type by now is one of
 172  *   EPOLL, DEVPOLL, SELECT
 173  *
 174  * private interface should not be used in the code.
 175  */
 176 #if defined(HAVE_EPOLL)
 177 /***************************************
 178  * Use epoll infrastructure - epoll(4) *
 179  ***************************************/
 180 # define SLAP_EVENT_FNAME               "epoll"
 181 # define SLAP_EVENTS_ARE_INDEXED        0
 182 # define SLAP_EPOLL_SOCK_IX(t,s)                (slap_daemon[t].sd_index[(s)])
 183 # define SLAP_EPOLL_SOCK_EP(t,s)                (slap_daemon[t].sd_epolls[SLAP_EPOLL_SOCK_IX(t,s)])
 184 # define SLAP_EPOLL_SOCK_EV(t,s)                (SLAP_EPOLL_SOCK_EP(t,s).events)
 185 # define SLAP_SOCK_IS_ACTIVE(t,s)               (SLAP_EPOLL_SOCK_IX(t,s) != -1)
 186 # define SLAP_SOCK_NOT_ACTIVE(t,s)      (SLAP_EPOLL_SOCK_IX(t,s) == -1)
 187 # define SLAP_EPOLL_SOCK_IS_SET(t,s, mode)      (SLAP_EPOLL_SOCK_EV(t,s) & (mode))
 188
 189 # define SLAP_SOCK_IS_READ(t,s)         SLAP_EPOLL_SOCK_IS_SET(t,(s), EPOLLIN)
 190 # define SLAP_SOCK_IS_WRITE(t,s)                SLAP_EPOLL_SOCK_IS_SET(t,(s), EPOLLOUT)
 191
 192 # define SLAP_EPOLL_SOCK_SET(t,s, mode) do { \
 193         if ( (SLAP_EPOLL_SOCK_EV(t,s) & (mode)) != (mode) ) {   \
 194                 SLAP_EPOLL_SOCK_EV(t,s) |= (mode); \
 195                 epoll_ctl( slap_daemon[t].sd_epfd, EPOLL_CTL_MOD, (s), \
 196                         &SLAP_EPOLL_SOCK_EP(t,s) ); \
 197         } \
 198 } while (0)
 199
 200 # define SLAP_EPOLL_SOCK_CLR(t,s, mode) do { \
 201         if ( (SLAP_EPOLL_SOCK_EV(t,s) & (mode)) ) { \
 202                 SLAP_EPOLL_SOCK_EV(t,s) &= ~(mode);     \
 203                 epoll_ctl( slap_daemon[t].sd_epfd, EPOLL_CTL_MOD, s, \
 204                         &SLAP_EPOLL_SOCK_EP(t,s) ); \
 205         } \
 206 } while (0)
 207
 208 # define SLAP_SOCK_SET_READ(t,s)                SLAP_EPOLL_SOCK_SET(t,s, EPOLLIN)
 209 # define SLAP_SOCK_SET_WRITE(t,s)               SLAP_EPOLL_SOCK_SET(t,s, EPOLLOUT)
 210
 211 # define SLAP_SOCK_CLR_READ(t,s)                SLAP_EPOLL_SOCK_CLR(t,(s), EPOLLIN)
 212 # define SLAP_SOCK_CLR_WRITE(t,s)               SLAP_EPOLL_SOCK_CLR(t,(s), EPOLLOUT)
 213
 214 #  define SLAP_SOCK_SET_SUSPEND(t,s) \
 215         ( slap_daemon[t].sd_suspend[SLAP_EPOLL_SOCK_IX(t,s)] = 1 )
 216 #  define SLAP_SOCK_CLR_SUSPEND(t,s) \
 217         ( slap_daemon[t].sd_suspend[SLAP_EPOLL_SOCK_IX(t,s)] = 0 )
 218 #  define SLAP_SOCK_IS_SUSPEND(t,s) \
 219         ( slap_daemon[t].sd_suspend[SLAP_EPOLL_SOCK_IX(t,s)] == 1 )
 220
 221 # define SLAP_EPOLL_EVENT_CLR(i, mode)  (revents[(i)].events &= ~(mode))
 222
 223 # define SLAP_EVENT_MAX(t)                      slap_daemon[t].sd_nfds
 224
 225 /* If a Listener address is provided, store that as the epoll data.
 226  * Otherwise, store the address of this socket's slot in the
 227  * index array. If we can't do this add, the system is out of
 228  * resources and we need to shutdown.
 229  */
 230 # define SLAP_SOCK_ADD(t, s, l)         do { \
 231         int rc; \
 232         SLAP_EPOLL_SOCK_IX(t,(s)) = slap_daemon[t].sd_nfds; \
 233         SLAP_EPOLL_SOCK_EP(t,(s)).data.ptr = (l) ? (l) : (void *)(&SLAP_EPOLL_SOCK_IX(t,s)); \
 234         SLAP_EPOLL_SOCK_EV(t,(s)) = EPOLLIN; \
 235         rc = epoll_ctl(slap_daemon[t].sd_epfd, EPOLL_CTL_ADD, \
 236                 (s), &SLAP_EPOLL_SOCK_EP(t,(s))); \
 237         if ( rc == 0 ) { \
 238                 slap_daemon[t].sd_nfds++; \
 239         } else { \
 240                 Debug( LDAP_DEBUG_ANY, \
 241                         "daemon: epoll_ctl(ADD,fd=%d) failed, errno=%d, shutting down\n", \
 242                         s, errno, 0 ); \
 243                 slapd_shutdown = 2; \
 244         } \
 245 } while (0)
 246
 247 # define SLAP_EPOLL_EV_LISTENER(t,ptr) \
 248         (((int *)(ptr) >= slap_daemon[t].sd_index && \
 249         (int *)(ptr) <= &slap_daemon[t].sd_index[dtblsize]) ? 0 : 1 )
 250
 251 # define SLAP_EPOLL_EV_PTRFD(t,ptr)             (SLAP_EPOLL_EV_LISTENER(t,ptr) ? \
 252         ((Listener *)ptr)->sl_sd : \
 253         (ber_socket_t) ((int *)(ptr) - slap_daemon[t].sd_index))
 254
 255 # define SLAP_SOCK_DEL(t,s)             do { \
 256         int fd, rc, index = SLAP_EPOLL_SOCK_IX(t,(s)); \
 257         if ( index < 0 ) break; \
 258         rc = epoll_ctl(slap_daemon[t].sd_epfd, EPOLL_CTL_DEL, \
 259                 (s), &SLAP_EPOLL_SOCK_EP(t,(s))); \
 260         slap_daemon[t].sd_epolls[index] = \
 261                 slap_daemon[t].sd_epolls[slap_daemon[t].sd_nfds-1]; \
 262         fd = SLAP_EPOLL_EV_PTRFD(t,slap_daemon[t].sd_epolls[index].data.ptr); \
 263         slap_daemon[t].sd_index[fd] = index; \
 264         slap_daemon[t].sd_index[(s)] = -1; \
 265         slap_daemon[t].sd_nfds--; \
 266 } while (0)
 267
 268 # define SLAP_EVENT_CLR_READ(i)         SLAP_EPOLL_EVENT_CLR((i), EPOLLIN)
 269 # define SLAP_EVENT_CLR_WRITE(i)        SLAP_EPOLL_EVENT_CLR((i), EPOLLOUT)
 270
 271 # define SLAP_EPOLL_EVENT_CHK(i, mode)  (revents[(i)].events & mode)
 272
 273 # define SLAP_EVENT_IS_READ(i)          SLAP_EPOLL_EVENT_CHK((i), EPOLLIN)
 274 # define SLAP_EVENT_IS_WRITE(i)         SLAP_EPOLL_EVENT_CHK((i), EPOLLOUT)
 275 # define SLAP_EVENT_IS_LISTENER(t,i)    SLAP_EPOLL_EV_LISTENER(t,revents[(i)].data.ptr)
 276 # define SLAP_EVENT_LISTENER(t,i)               ((Listener *)(revents[(i)].data.ptr))
 277
 278 # define SLAP_EVENT_FD(t,i)             SLAP_EPOLL_EV_PTRFD(t,revents[(i)].data.ptr)
 279
 280 # define SLAP_SOCK_INIT(t)              do { \
 281         int j; \
 282         slap_daemon[t].sd_epolls = ch_calloc(1, \
 283                 ( sizeof(struct epoll_event) * 2 \
 284                         + sizeof(int) ) * dtblsize * 2); \
 285         slap_daemon[t].sd_index = (int *)&slap_daemon[t].sd_epolls[ 2 * dtblsize ]; \
 286         slap_daemon[t].sd_epfd = epoll_create( dtblsize / slapd_daemon_threads ); \
 287         for ( j = 0; j < dtblsize; j++ ) slap_daemon[t].sd_index[j] = -1; \
 288 } while (0)
 289
 290 # define SLAP_SOCK_DESTROY(t)           do { \
 291         if ( slap_daemon[t].sd_epolls != NULL ) { \
 292                 ch_free( slap_daemon[t].sd_epolls ); \
 293                 slap_daemon[t].sd_epolls = NULL; \
 294                 slap_daemon[t].sd_index = NULL; \
 295                 close( slap_daemon[t].sd_epfd ); \
 296         } \
 297 } while ( 0 )
 298
 299 # define SLAP_EVENT_DECL                struct epoll_event *revents
 300
 301 # define SLAP_EVENT_INIT(t)             do { \
 302         revents = slap_daemon[t].sd_epolls + dtblsize; \
 303 } while (0)
 304
 305 # define SLAP_EVENT_WAIT(t, tvp, nsp)   do { \
 306         *(nsp) = epoll_wait( slap_daemon[t].sd_epfd, revents, \
 307                 dtblsize, (tvp) ? (tvp)->tv_sec * 1000 : -1 ); \
 308 } while (0)
 309
 310 #elif defined(SLAP_X_DEVPOLL) && defined(HAVE_DEVPOLL)
 311
 312 /*************************************************************
 313  * Use Solaris' (>= 2.7) /dev/poll infrastructure - poll(7d) *
 314  *************************************************************/
 315 # define SLAP_EVENT_FNAME               "/dev/poll"
 316 # define SLAP_EVENTS_ARE_INDEXED        0
 317 /*
 318  * - sd_index   is used much like with epoll()
 319  * - sd_l       is maintained as an array containing the address
 320  *              of the listener; the index is the fd itself
 321  * - sd_pollfd  is used to keep track of what data has been
 322  *              registered in /dev/poll
 323  */
 324 # define SLAP_DEVPOLL_SOCK_IX(t,s)      (slap_daemon[t].sd_index[(s)])
 325 # define SLAP_DEVPOLL_SOCK_LX(t,s)      (slap_daemon[t].sd_l[(s)])
 326 # define SLAP_DEVPOLL_SOCK_EP(t,s)      (slap_daemon[t].sd_pollfd[SLAP_DEVPOLL_SOCK_IX(t,(s))])
 327 # define SLAP_DEVPOLL_SOCK_FD(t,s)      (SLAP_DEVPOLL_SOCK_EP(t,(s)).fd)
 328 # define SLAP_DEVPOLL_SOCK_EV(t,s)      (SLAP_DEVPOLL_SOCK_EP(t,(s)).events)
 329 # define SLAP_SOCK_IS_ACTIVE(t,s)               (SLAP_DEVPOLL_SOCK_IX(t,(s)) != -1)
 330 # define SLAP_SOCK_NOT_ACTIVE(t,s)      (SLAP_DEVPOLL_SOCK_IX(t,(s)) == -1)
 331 # define SLAP_SOCK_IS_SET(t,s, mode)    (SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode))
 332
 333 # define SLAP_SOCK_IS_READ(t,s)         SLAP_SOCK_IS_SET(t,(s), POLLIN)
 334 # define SLAP_SOCK_IS_WRITE(t,s)                SLAP_SOCK_IS_SET(t,(s), POLLOUT)
 335
 336 /* as far as I understand, any time we need to communicate with the kernel
 337  * about the number and/or properties of a file descriptor we need it to
 338  * wait for, we have to rewrite the whole set */
 339 # define SLAP_DEVPOLL_WRITE_POLLFD(t,s, pfd, n, what, shdn)     do { \
 340         int rc; \
 341         size_t size = (n) * sizeof( struct pollfd ); \
 342         /* FIXME: use pwrite? */ \
 343         rc = write( slap_daemon[t].sd_dpfd, (pfd), size ); \
 344         if ( rc != size ) { \
 345                 Debug( LDAP_DEBUG_ANY, "daemon: " SLAP_EVENT_FNAME ": " \
 346                         "%s fd=%d failed errno=%d\n", \
 347                         (what), (s), errno ); \
 348                 if ( (shdn) ) { \
 349                         slapd_shutdown = 2; \
 350                 } \
 351         } \
 352 } while (0)
 353
 354 # define SLAP_DEVPOLL_SOCK_SET(t,s, mode)       do { \
 355         Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_SET_%s(%d)=%d\n", \
 356                 (mode) == POLLIN ? "READ" : "WRITE", (s), \
 357                 ( (SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode)) != (mode) ) ); \
 358         if ( (SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode)) != (mode) ) { \
 359                 struct pollfd pfd; \
 360                 SLAP_DEVPOLL_SOCK_EV(t,(s)) |= (mode); \
 361                 pfd.fd = SLAP_DEVPOLL_SOCK_FD(t,(s)); \
 362                 pfd.events = /* (mode) */ SLAP_DEVPOLL_SOCK_EV(t,(s)); \
 363                 SLAP_DEVPOLL_WRITE_POLLFD(t,(s), &pfd, 1, "SET", 0); \
 364         } \
 365 } while (0)
 366
 367 # define SLAP_DEVPOLL_SOCK_CLR(t,s, mode)               do { \
 368         Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_CLR_%s(%d)=%d\n", \
 369                 (mode) == POLLIN ? "READ" : "WRITE", (s), \
 370                 ( (SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode)) == (mode) ) ); \
 371         if ((SLAP_DEVPOLL_SOCK_EV(t,(s)) & (mode)) == (mode) ) { \
 372                 struct pollfd pfd[2]; \
 373                 SLAP_DEVPOLL_SOCK_EV(t,(s)) &= ~(mode); \
 374                 pfd[0].fd = SLAP_DEVPOLL_SOCK_FD(t,(s)); \
 375                 pfd[0].events = POLLREMOVE; \
 376                 pfd[1] = SLAP_DEVPOLL_SOCK_EP(t,(s)); \
 377                 SLAP_DEVPOLL_WRITE_POLLFD(t,(s), &pfd[0], 2, "CLR", 0); \
 378         } \
 379 } while (0)
 380
 381 # define SLAP_SOCK_SET_READ(t,s)                SLAP_DEVPOLL_SOCK_SET(t,s, POLLIN)
 382 # define SLAP_SOCK_SET_WRITE(t,s)               SLAP_DEVPOLL_SOCK_SET(t,s, POLLOUT)
 383
 384 # define SLAP_SOCK_CLR_READ(t,s)                SLAP_DEVPOLL_SOCK_CLR(t,(s), POLLIN)
 385 # define SLAP_SOCK_CLR_WRITE(t,s)               SLAP_DEVPOLL_SOCK_CLR(t,(s), POLLOUT)
 386
 387 #  define SLAP_SOCK_SET_SUSPEND(t,s) \
 388         ( slap_daemon[t].sd_suspend[SLAP_DEVPOLL_SOCK_IX(t,(s))] = 1 )
 389 #  define SLAP_SOCK_CLR_SUSPEND(t,s) \
 390         ( slap_daemon[t].sd_suspend[SLAP_DEVPOLL_SOCK_IX(t,(s))] = 0 )
 391 #  define SLAP_SOCK_IS_SUSPEND(t,s) \
 392         ( slap_daemon[t].sd_suspend[SLAP_DEVPOLL_SOCK_IX(t,(s))] == 1 )
 393
 394 # define SLAP_DEVPOLL_EVENT_CLR(i, mode)        (revents[(i)].events &= ~(mode))
 395
 396 # define SLAP_EVENT_MAX(t)                      slap_daemon[t].sd_nfds
 397
 398 /* If a Listener address is provided, store that in the sd_l array.
 399  * If we can't do this add, the system is out of resources and we
 400  * need to shutdown.
 401  */
 402 # define SLAP_SOCK_ADD(t, s, l)         do { \
 403         Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_ADD(%d, %p)\n", (s), (l), 0 ); \
 404         SLAP_DEVPOLL_SOCK_IX(t,(s)) = slap_daemon[t].sd_nfds; \
 405         SLAP_DEVPOLL_SOCK_LX(t,(s)) = (l); \
 406         SLAP_DEVPOLL_SOCK_FD(t,(s)) = (s); \
 407         SLAP_DEVPOLL_SOCK_EV(t,(s)) = POLLIN; \
 408         SLAP_DEVPOLL_WRITE_POLLFD(t,(s), &SLAP_DEVPOLL_SOCK_EP((s)), 1, "ADD", 1); \
 409         slap_daemon[t].sd_nfds++; \
 410 } while (0)
 411
 412 # define SLAP_DEVPOLL_EV_LISTENER(ptr)  ((ptr) != NULL)
 413
 414 # define SLAP_SOCK_DEL(t,s)             do { \
 415         int fd, index = SLAP_DEVPOLL_SOCK_IX(t,(s)); \
 416         Debug( LDAP_DEBUG_CONNS, "SLAP_SOCK_DEL(%d)\n", (s), 0, 0 ); \
 417         if ( index < 0 ) break; \
 418         if ( index < slap_daemon[t].sd_nfds - 1 ) { \
 419                 struct pollfd pfd = slap_daemon[t].sd_pollfd[index]; \
 420                 fd = slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1].fd; \
 421                 slap_daemon[t].sd_pollfd[index] = slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1]; \
 422                 slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1] = pfd; \
 423                 slap_daemon[t].sd_index[fd] = index; \
 424         } \
 425         slap_daemon[t].sd_index[(s)] = -1; \
 426         slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1].events = POLLREMOVE; \
 427         SLAP_DEVPOLL_WRITE_POLLFD(t,(s), &slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1], 1, "DEL", 0); \
 428         slap_daemon[t].sd_pollfd[slap_daemon[t].sd_nfds - 1].events = 0; \
 429         slap_daemon[t].sd_nfds--; \
 430 } while (0)
 431
 432 # define SLAP_EVENT_CLR_READ(i)         SLAP_DEVPOLL_EVENT_CLR((i), POLLIN)
 433 # define SLAP_EVENT_CLR_WRITE(i)        SLAP_DEVPOLL_EVENT_CLR((i), POLLOUT)
 434
 435 # define SLAP_DEVPOLL_EVENT_CHK(i, mode)        (revents[(i)].events & (mode))
 436
 437 # define SLAP_EVENT_FD(t,i)             (revents[(i)].fd)
 438
 439 # define SLAP_EVENT_IS_READ(i)          SLAP_DEVPOLL_EVENT_CHK((i), POLLIN)
 440 # define SLAP_EVENT_IS_WRITE(i)         SLAP_DEVPOLL_EVENT_CHK((i), POLLOUT)
 441 # define SLAP_EVENT_IS_LISTENER(t,i)    SLAP_DEVPOLL_EV_LISTENER(SLAP_DEVPOLL_SOCK_LX(SLAP_EVENT_FD(t,(i))))
 442 # define SLAP_EVENT_LISTENER(t,i)               SLAP_DEVPOLL_SOCK_LX(SLAP_EVENT_FD(t,(i)))
 443
 444 # define SLAP_SOCK_INIT(t)              do { \
 445         slap_daemon[t].sd_pollfd = ch_calloc( 1, \
 446                 ( sizeof(struct pollfd) * 2 \
 447                         + sizeof( int ) \
 448                         + sizeof( Listener * ) ) * dtblsize ); \
 449         slap_daemon[t].sd_index = (int *)&slap_daemon[t].sd_pollfd[ 2 * dtblsize ]; \
 450         slap_daemon[t].sd_l = (Listener **)&slap_daemon[t].sd_index[ dtblsize ]; \
 451         slap_daemon[t].sd_dpfd = open( SLAP_EVENT_FNAME, O_RDWR ); \
 452         if ( slap_daemon[t].sd_dpfd == -1 ) { \
 453                 Debug( LDAP_DEBUG_ANY, "daemon: " SLAP_EVENT_FNAME ": " \
 454                         "open(\"" SLAP_EVENT_FNAME "\") failed errno=%d\n", \
 455                         errno, 0, 0 ); \
 456                 SLAP_SOCK_DESTROY; \
 457                 return -1; \
 458         } \
 459         for ( i = 0; i < dtblsize; i++ ) { \
 460                 slap_daemon[t].sd_pollfd[i].fd = -1; \
 461                 slap_daemon[t].sd_index[i] = -1; \
 462         } \
 463 } while (0)
 464
 465 # define SLAP_SOCK_DESTROY(t)           do { \
 466         if ( slap_daemon[t].sd_pollfd != NULL ) { \
 467                 ch_free( slap_daemon[t].sd_pollfd ); \
 468                 slap_daemon[t].sd_pollfd = NULL; \
 469                 slap_daemon[t].sd_index = NULL; \
 470                 slap_daemon[t].sd_l = NULL; \
 471                 close( slap_daemon[t].sd_dpfd ); \
 472         } \
 473 } while ( 0 )
 474
 475 # define SLAP_EVENT_DECL                struct pollfd *revents
 476
 477 # define SLAP_EVENT_INIT(t)             do { \
 478         revents = &slap_daemon[t].sd_pollfd[ dtblsize ]; \
 479 } while (0)
 480
 481 # define SLAP_EVENT_WAIT(t, tvp, nsp)   do { \
 482         struct dvpoll           sd_dvpoll; \
 483         sd_dvpoll.dp_timeout = (tvp) ? (tvp)->tv_sec * 1000 : -1; \
 484         sd_dvpoll.dp_nfds = dtblsize; \
 485         sd_dvpoll.dp_fds = revents; \
 486         *(nsp) = ioctl( slap_daemon[t].sd_dpfd, DP_POLL, &sd_dvpoll ); \
 487 } while (0)
 488
 489 #else /* ! epoll && ! /dev/poll */
 490 # ifdef HAVE_WINSOCK
 491 # define SLAP_EVENT_FNAME               "WSselect"
 492 /* Winsock provides a "select" function but its fd_sets are
 493  * actually arrays of sockets. Since these sockets are handles
 494  * and not a contiguous range of small integers, we manage our
 495  * own "fd" table of socket handles and use their indices as
 496  * descriptors.
 497  *
 498  * All of our listener/connection structures use fds; the actual
 499  * I/O functions use sockets. The SLAP_FD2SOCK macro in proto-slap.h
 500  * handles the mapping.
 501  *
 502  * Despite the mapping overhead, this is about 45% more efficient
 503  * than just using Winsock's select and FD_ISSET directly.
 504  *
 505  * Unfortunately Winsock's select implementation doesn't scale well
 506  * as the number of connections increases. This probably needs to be
 507  * rewritten to use the Winsock overlapped/asynchronous I/O functions.
 508  */
 509 # define SLAP_EVENTS_ARE_INDEXED        1
 510 # define SLAP_EVENT_DECL                fd_set readfds, writefds; char *rflags
 511 # define SLAP_EVENT_INIT(t)     do { \
 512         int i; \
 513         FD_ZERO( &readfds ); \
 514         FD_ZERO( &writefds ); \
 515         rflags = slap_daemon[t].sd_rflags; \
 516         memset( rflags, 0, slap_daemon[t].sd_nfds ); \
 517         for ( i=0; i<slap_daemon[t].sd_nfds; i++ ) { \
 518                 if ( slap_daemon[t].sd_flags[i] & SD_READ ) \
 519                         FD_SET( slapd_ws_sockets[i], &readfds );\
 520                 if ( slap_daemon[t].sd_flags[i] & SD_WRITE ) \
 521                         FD_SET( slapd_ws_sockets[i], &writefds ); \
 522         } } while ( 0 )
 523
 524 # define SLAP_EVENT_MAX(t)              slap_daemon[t].sd_nfds
 525
 526 # define SLAP_EVENT_WAIT(t, tvp, nsp)   do { \
 527         int i; \
 528         *(nsp) = select( SLAP_EVENT_MAX(t), &readfds, \
 529                 nwriters > 0 ? &writefds : NULL, NULL, (tvp) ); \
 530         for ( i=0; i<readfds.fd_count; i++) { \
 531                 int fd = slapd_sock2fd(readfds.fd_array[i]); \
 532                 if ( fd >= 0 ) { \
 533                         slap_daemon[t].sd_rflags[fd] = SD_READ; \
 534                         if ( fd >= *(nsp)) *(nsp) = fd+1; \
 535                 } \
 536         } \
 537         for ( i=0; i<writefds.fd_count; i++) { \
 538                 int fd = slapd_sock2fd(writefds.fd_array[i]); \
 539                 if ( fd >= 0 ) { \
 540                         slap_daemon[t].sd_rflags[fd] = SD_WRITE; \
 541                         if ( fd >= *(nsp)) *(nsp) = fd+1; \
 542                 } \
 543         } \
 544 } while (0)
 545
 546 # define SLAP_EVENT_IS_READ(fd)         (rflags[fd] & SD_READ)
 547 # define SLAP_EVENT_IS_WRITE(fd)        (rflags[fd] & SD_WRITE)
 548
 549 # define SLAP_EVENT_CLR_READ(fd)        rflags[fd] &= ~SD_READ
 550 # define SLAP_EVENT_CLR_WRITE(fd)       rflags[fd] &= ~SD_WRITE
 551
 552 # define SLAP_SOCK_INIT(t)              do { \
 553         if (!t) { \
 554         ldap_pvt_thread_mutex_init( &slapd_ws_mutex ); \
 555         slapd_ws_sockets = ch_malloc( dtblsize * ( sizeof(SOCKET) + 2)); \
 556         memset( slapd_ws_sockets, -1, dtblsize * sizeof(SOCKET) ); \
 557         } \
 558         slap_daemon[t].sd_flags = (char *)(slapd_ws_sockets + dtblsize); \
 559         slap_daemon[t].sd_rflags = slap_daemon[t].sd_flags + dtblsize; \
 560         memset( slap_daemon[t].sd_flags, 0, dtblsize ); \
 561         slapd_ws_sockets[t*2] = wake_sds[t][0]; \
 562         slapd_ws_sockets[t*2+1] = wake_sds[t][1]; \
 563         wake_sds[t][0] = t*2; \
 564         wake_sds[t][1] = t*2+1; \
 565         slap_daemon[t].sd_nfds = t*2 + 2; \
 566         } while ( 0 )
 567
 568 # define SLAP_SOCK_DESTROY(t)   do { \
 569         ch_free( slapd_ws_sockets ); slapd_ws_sockets = NULL; \
 570         slap_daemon[t].sd_flags = NULL; \
 571         slap_daemon[t].sd_rflags = NULL; \
 572         ldap_pvt_thread_mutex_destroy( &slapd_ws_mutex ); \
 573         } while ( 0 )
 574
 575 # define SLAP_SOCK_IS_ACTIVE(t,fd) ( slap_daemon[t].sd_flags[fd] & SD_ACTIVE )
 576 # define SLAP_SOCK_IS_READ(t,fd) ( slap_daemon[t].sd_flags[fd] & SD_READ )
 577 # define SLAP_SOCK_IS_WRITE(t,fd) ( slap_daemon[t].sd_flags[fd] & SD_WRITE )
 578 # define SLAP_SOCK_NOT_ACTIVE(t,fd)     (!slap_daemon[t].sd_flags[fd])
 579
 580 # define SLAP_SOCK_SET_READ(t,fd)               ( slap_daemon[t].sd_flags[fd] |= SD_READ )
 581 # define SLAP_SOCK_SET_WRITE(t,fd)              ( slap_daemon[t].sd_flags[fd] |= SD_WRITE )
 582
 583 # define SLAP_SELECT_ADDTEST(t,s)       do { \
 584         if ((s) >= slap_daemon[t].sd_nfds) slap_daemon[t].sd_nfds = (s)+1; \
 585 } while (0)
 586
 587 # define SLAP_SOCK_CLR_READ(t,fd)               ( slap_daemon[t].sd_flags[fd] &= ~SD_READ )
 588 # define SLAP_SOCK_CLR_WRITE(t,fd)              ( slap_daemon[t].sd_flags[fd] &= ~SD_WRITE )
 589
 590 # define SLAP_SOCK_ADD(t,s, l)  do { \
 591         SLAP_SELECT_ADDTEST(t,(s)); \
 592         slap_daemon[t].sd_flags[s] = SD_ACTIVE|SD_READ; \
 593 } while ( 0 )
 594
 595 # define SLAP_SOCK_DEL(t,s) do { \
 596         slap_daemon[t].sd_flags[s] = 0; \
 597         slapd_sockdel( s ); \
 598 } while ( 0 )
 599
 600 # else /* !HAVE_WINSOCK */
 601
 602 /**************************************
 603  * Use select system call - select(2) *
 604  **************************************/
 605 # define SLAP_EVENT_FNAME               "select"
 606 /* select */
 607 # define SLAP_EVENTS_ARE_INDEXED        1
 608 # define SLAP_EVENT_DECL                fd_set readfds, writefds
 609
 610 # define SLAP_EVENT_INIT(t)             do { \
 611         AC_MEMCPY( &readfds, &slap_daemon[t].sd_readers, sizeof(fd_set) );      \
 612         if ( nwriters ) { \
 613                 AC_MEMCPY( &writefds, &slap_daemon[t].sd_writers, sizeof(fd_set) ); \
 614         } else { \
 615                 FD_ZERO( &writefds ); \
 616         } \
 617 } while (0)
 618
 619 # ifdef FD_SETSIZE
 620 #  define SLAP_SELECT_CHK_SETSIZE       do { \
 621         if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE; \
 622 } while (0)
 623 # else /* ! FD_SETSIZE */
 624 #  define SLAP_SELECT_CHK_SETSIZE       do { ; } while (0)
 625 # endif /* ! FD_SETSIZE */
 626
 627 # define SLAP_SOCK_INIT(t)                      do { \
 628         SLAP_SELECT_CHK_SETSIZE; \
 629         FD_ZERO(&slap_daemon[t].sd_actives); \
 630         FD_ZERO(&slap_daemon[t].sd_readers); \
 631         FD_ZERO(&slap_daemon[t].sd_writers); \
 632 } while (0)
 633
 634 # define SLAP_SOCK_DESTROY(t)
 635
 636 # define SLAP_SOCK_IS_ACTIVE(t,fd)      FD_ISSET((fd), &slap_daemon[t].sd_actives)
 637 # define SLAP_SOCK_IS_READ(t,fd)                FD_ISSET((fd), &slap_daemon[t].sd_readers)
 638 # define SLAP_SOCK_IS_WRITE(t,fd)               FD_ISSET((fd), &slap_daemon[t].sd_writers)
 639
 640 # define SLAP_SOCK_NOT_ACTIVE(t,fd)     (!SLAP_SOCK_IS_ACTIVE(t,fd) && \
 641          !SLAP_SOCK_IS_READ(t,fd) && !SLAP_SOCK_IS_WRITE(t,fd))
 642
 643 # define SLAP_SOCK_SET_READ(t,fd)       FD_SET((fd), &slap_daemon[t].sd_readers)
 644 # define SLAP_SOCK_SET_WRITE(t,fd)      FD_SET((fd), &slap_daemon[t].sd_writers)
 645
 646 # define SLAP_EVENT_MAX(t)              slap_daemon[t].sd_nfds
 647 # define SLAP_SELECT_ADDTEST(t,s)       do { \
 648         if ((s) >= slap_daemon[t].sd_nfds) slap_daemon[t].sd_nfds = (s)+1; \
 649 } while (0)
 650
 651 # define SLAP_SOCK_CLR_READ(t,fd)               FD_CLR((fd), &slap_daemon[t].sd_readers)
 652 # define SLAP_SOCK_CLR_WRITE(t,fd)      FD_CLR((fd), &slap_daemon[t].sd_writers)
 653
 654 # define SLAP_SOCK_ADD(t,s, l)          do { \
 655         SLAP_SELECT_ADDTEST(t,(s)); \
 656         FD_SET((s), &slap_daemon[t].sd_actives); \
 657         FD_SET((s), &slap_daemon[t].sd_readers); \
 658 } while (0)
 659
 660 # define SLAP_SOCK_DEL(t,s)             do { \
 661         FD_CLR((s), &slap_daemon[t].sd_actives); \
 662         FD_CLR((s), &slap_daemon[t].sd_readers); \
 663         FD_CLR((s), &slap_daemon[t].sd_writers); \
 664 } while (0)
 665
 666 # define SLAP_EVENT_IS_READ(fd)         FD_ISSET((fd), &readfds)
 667 # define SLAP_EVENT_IS_WRITE(fd)        FD_ISSET((fd), &writefds)
 668
 669 # define SLAP_EVENT_CLR_READ(fd)        FD_CLR((fd), &readfds)
 670 # define SLAP_EVENT_CLR_WRITE(fd)       FD_CLR((fd), &writefds)
 671
 672 # define SLAP_EVENT_WAIT(t, tvp, nsp)   do { \
 673         *(nsp) = select( SLAP_EVENT_MAX(t), &readfds, \
 674                 nwriters > 0 ? &writefds : NULL, NULL, (tvp) ); \
 675 } while (0)
 676 # endif /* !HAVE_WINSOCK */
 677 #endif /* ! epoll && ! /dev/poll */
 678
 679 #ifdef HAVE_SLP
 680 /*
 681  * SLP related functions
 682  */
 683 #include <slp.h>
 684
 685 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
 686 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
 687 static char** slapd_srvurls = NULL;
 688 static SLPHandle slapd_hslp = 0;
 689 int slapd_register_slp = 0;
 690 const char *slapd_slp_attrs = NULL;
 691
 692 static SLPError slapd_slp_cookie;
 693
 694 static void
 695 slapd_slp_init( const char* urls )
 696 {
 697         int i;
 698         SLPError err;
 699
 700         slapd_srvurls = ldap_str2charray( urls, " " );
 701
 702         if ( slapd_srvurls == NULL ) return;
 703
 704         /* find and expand INADDR_ANY URLs */
 705         for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
 706                 if ( strcmp( slapd_srvurls[i], "ldap:///" ) == 0 ) {
 707                         slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 708                                 global_host_bv.bv_len +
 709                                 sizeof( LDAP_SRVTYPE_PREFIX ) );
 710                         strcpy( lutil_strcopy(slapd_srvurls[i],
 711                                 LDAP_SRVTYPE_PREFIX ), global_host_bv.bv_val );
 712                 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0 ) {
 713                         slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 714                                 global_host_bv.bv_len +
 715                                 sizeof( LDAPS_SRVTYPE_PREFIX ) );
 716                         strcpy( lutil_strcopy(slapd_srvurls[i],
 717                                 LDAPS_SRVTYPE_PREFIX ), global_host_bv.bv_val );
 718                 }
 719         }
 720
 721         /* open the SLP handle */
 722         err = SLPOpen( "en", 0, &slapd_hslp );
 723
 724         if ( err != SLP_OK ) {
 725                 Debug( LDAP_DEBUG_CONNS, "daemon: SLPOpen() failed with %ld\n",
 726                         (long)err, 0, 0 );
 727         }
 728 }
 729
 730 static void
 731 slapd_slp_deinit( void )
 732 {
 733         if ( slapd_srvurls == NULL ) return;
 734
 735         ldap_charray_free( slapd_srvurls );
 736         slapd_srvurls = NULL;
 737
 738         /* close the SLP handle */
 739         SLPClose( slapd_hslp );
 740 }
 741
 742 static void
 743 slapd_slp_regreport(
 744         SLPHandle       hslp,
 745         SLPError        errcode,
 746         void            *cookie )
 747 {
 748         /* return the error code in the cookie */
 749         *(SLPError*)cookie = errcode;
 750 }
 751
 752 static void
 753 slapd_slp_reg()
 754 {
 755         int i;
 756         SLPError err;
 757
 758         if ( slapd_srvurls == NULL ) return;
 759
 760         for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
 761                 if ( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
 762                                 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
 763                         strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
 764                                 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
 765                 {
 766                         err = SLPReg( slapd_hslp,
 767                                 slapd_srvurls[i],
 768                                 SLP_LIFETIME_MAXIMUM,
 769                                 "ldap",
 770                                 (slapd_slp_attrs) ? slapd_slp_attrs : "",
 771                                 SLP_TRUE,
 772                                 slapd_slp_regreport,
 773                                 &slapd_slp_cookie );
 774
 775                         if ( err != SLP_OK || slapd_slp_cookie != SLP_OK ) {
 776                                 Debug( LDAP_DEBUG_CONNS,
 777                                         "daemon: SLPReg(%s) failed with %ld, cookie = %ld\n",
 778                                         slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
 779                         }
 780                 }
 781         }
 782 }
 783
 784 static void
 785 slapd_slp_dereg( void )
 786 {
 787         int i;
 788         SLPError err;
 789
 790         if ( slapd_srvurls == NULL ) return;
 791
 792         for ( i = 0; slapd_srvurls[i] != NULL; i++ ) {
 793                 err = SLPDereg( slapd_hslp,
 794                         slapd_srvurls[i],
 795                         slapd_slp_regreport,
 796                         &slapd_slp_cookie );
 797
 798                 if ( err != SLP_OK || slapd_slp_cookie != SLP_OK ) {
 799                         Debug( LDAP_DEBUG_CONNS,
 800                                 "daemon: SLPDereg(%s) failed with %ld, cookie = %ld\n",
 801                                 slapd_srvurls[i], (long)err, (long)slapd_slp_cookie );
 802                 }
 803         }
 804 }
 805 #endif /* HAVE_SLP */
 806
 807 #ifdef HAVE_WINSOCK
 808 /* Manage the descriptor to socket table */
 809 ber_socket_t
 810 slapd_socknew( ber_socket_t s )
 811 {
 812         ber_socket_t i;
 813         ldap_pvt_thread_mutex_lock( &slapd_ws_mutex );
 814         for ( i = 0; i < dtblsize && slapd_ws_sockets[i] != INVALID_SOCKET; i++ );
 815         if ( i == dtblsize ) {
 816                 WSASetLastError( WSAEMFILE );
 817         } else {
 818                 slapd_ws_sockets[i] = s;
 819         }
 820         ldap_pvt_thread_mutex_unlock( &slapd_ws_mutex );
 821         return i;
 822 }
 823
 824 void
 825 slapd_sockdel( ber_socket_t s )
 826 {
 827         ldap_pvt_thread_mutex_lock( &slapd_ws_mutex );
 828         slapd_ws_sockets[s] = INVALID_SOCKET;
 829         ldap_pvt_thread_mutex_unlock( &slapd_ws_mutex );
 830 }
 831
 832 ber_socket_t
 833 slapd_sock2fd( ber_socket_t s )
 834 {
 835         ber_socket_t i;
 836         for ( i=0; i<dtblsize && slapd_ws_sockets[i] != s; i++);
 837         if ( i == dtblsize )
 838                 i = -1;
 839         return i;
 840 }
 841 #endif
 842
 843 /*
 844  * Add a descriptor to daemon control
 845  *
 846  * If isactive, the descriptor is a live server session and is subject
 847  * to idletimeout control. Otherwise, the descriptor is a passive
 848  * listener or an outbound client session, and not subject to
 849  * idletimeout. The underlying event handler may record the Listener
 850  * argument to differentiate Listener's from real sessions.
 851  */
 852 static void
 853 slapd_add( ber_socket_t s, int isactive, Listener *sl, int id )
 854 {
 855         if (id < 0)
 856                 id = DAEMON_ID(s);
 857         ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
 858
 859         assert( SLAP_SOCK_NOT_ACTIVE(id, s) );
 860
 861         if ( isactive ) slap_daemon[id].sd_nactives++;
 862
 863         SLAP_SOCK_ADD(id, s, sl);
 864
 865         Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr%s listener=%p\n",
 866                 (long) s, isactive ? " (active)" : "", (void *)sl );
 867
 868         ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
 869
 870         WAKE_LISTENER(id,1);
 871 }
 872
 873 /*
 874  * Remove the descriptor from daemon control
 875  */
 876 void
 877 slapd_remove(
 878         ber_socket_t s,
 879         Sockbuf *sb,
 880         int wasactive,
 881         int wake,
 882         int locked )
 883 {
 884         int waswriter;
 885         int wasreader;
 886         int id = DAEMON_ID(s);
 887
 888         if ( !locked )
 889                 ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
 890
 891         assert( SLAP_SOCK_IS_ACTIVE( id, s ));
 892
 893         if ( wasactive ) slap_daemon[id].sd_nactives--;
 894
 895         waswriter = SLAP_SOCK_IS_WRITE(id, s);
 896         wasreader = SLAP_SOCK_IS_READ(id, s);
 897
 898         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 899                 (long) s,
 900                 wasreader ? "r" : "",
 901                 waswriter ? "w" : "" );
 902
 903         if ( waswriter ) slap_daemon[id].sd_nwriters--;
 904
 905         SLAP_SOCK_DEL(id, s);
 906
 907         if ( sb )
 908                 ber_sockbuf_free(sb);
 909
 910         /* If we ran out of file descriptors, we dropped a listener from
 911          * the select() loop. Now that we're removing a session from our
 912          * control, we can try to resume a dropped listener to use.
 913          */
 914         if ( emfile && listening ) {
 915                 int i;
 916                 for ( i = 0; slap_listeners[i] != NULL; i++ ) {
 917                         Listener *lr = slap_listeners[i];
 918
 919                         if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
 920                         if ( lr->sl_sd == s ) continue;
 921                         if ( lr->sl_mute ) {
 922                                 lr->sl_mute = 0;
 923                                 emfile--;
 924                                 if ( DAEMON_ID(lr->sl_sd) != id )
 925                                         WAKE_LISTENER(DAEMON_ID(lr->sl_sd), wake);
 926                                 break;
 927                         }
 928                 }
 929                 /* Walked the entire list without enabling anything; emfile
 930                  * counter is stale. Reset it.
 931                  */
 932                 if ( slap_listeners[i] == NULL ) emfile = 0;
 933         }
 934         ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
 935         WAKE_LISTENER(id, wake || slapd_gentle_shutdown == 2);
 936 }
 937
 938 void
 939 slapd_clr_write( ber_socket_t s, int wake )
 940 {
 941         int id = DAEMON_ID(s);
 942         ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
 943
 944         if ( SLAP_SOCK_IS_WRITE( id, s )) {
 945                 assert( SLAP_SOCK_IS_ACTIVE( id, s ));
 946
 947                 SLAP_SOCK_CLR_WRITE( id, s );
 948                 slap_daemon[id].sd_nwriters--;
 949         }
 950
 951         ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
 952         WAKE_LISTENER(id,wake);
 953 }
 954
 955 void
 956 slapd_set_write( ber_socket_t s, int wake )
 957 {
 958         int id = DAEMON_ID(s);
 959         ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
 960
 961         assert( SLAP_SOCK_IS_ACTIVE( id, s ));
 962
 963         if ( !SLAP_SOCK_IS_WRITE( id, s )) {
 964                 SLAP_SOCK_SET_WRITE( id, s );
 965                 slap_daemon[id].sd_nwriters++;
 966         }
 967         if (( wake & 2 ) && global_writetimeout && !chk_writetime ) {
 968                 if (id)
 969                         ldap_pvt_thread_mutex_lock( &slap_daemon[0].sd_mutex );
 970                 if (!chk_writetime)
 971                         chk_writetime = slap_get_time();
 972                 if (id)
 973                         ldap_pvt_thread_mutex_unlock( &slap_daemon[0].sd_mutex );
 974         }
 975
 976         ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
 977         WAKE_LISTENER(id,wake);
 978 }
 979
 980 int
 981 slapd_clr_read( ber_socket_t s, int wake )
 982 {
 983         int rc = 1;
 984         int id = DAEMON_ID(s);
 985         ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
 986
 987         if ( SLAP_SOCK_IS_ACTIVE( id, s )) {
 988                 SLAP_SOCK_CLR_READ( id, s );
 989                 rc = 0;
 990         }
 991         ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
 992         if ( !rc )
 993                 WAKE_LISTENER(id,wake);
 994         return rc;
 995 }
 996
 997 void
 998 slapd_set_read( ber_socket_t s, int wake )
 999 {
1000         int do_wake = 1;
1001         int id = DAEMON_ID(s);
1002         ldap_pvt_thread_mutex_lock( &slap_daemon[id].sd_mutex );
1003
1004         if( SLAP_SOCK_IS_ACTIVE( id, s ) && !SLAP_SOCK_IS_READ( id, s )) {
1005                 SLAP_SOCK_SET_READ( id, s );
1006         } else {
1007                 do_wake = 0;
1008         }
1009         ldap_pvt_thread_mutex_unlock( &slap_daemon[id].sd_mutex );
1010         if ( do_wake )
1011                 WAKE_LISTENER(id,wake);
1012 }
1013
1014 time_t
1015 slapd_get_writetime()
1016 {
1017         time_t cur;
1018         ldap_pvt_thread_mutex_lock( &slap_daemon[0].sd_mutex );
1019         cur = chk_writetime;
1020         ldap_pvt_thread_mutex_unlock( &slap_daemon[0].sd_mutex );
1021         return cur;
1022 }
1023
1024 void
1025 slapd_clr_writetime( time_t old )
1026 {
1027         ldap_pvt_thread_mutex_lock( &slap_daemon[0].sd_mutex );
1028         if ( chk_writetime == old )
1029                 chk_writetime = 0;
1030         ldap_pvt_thread_mutex_unlock( &slap_daemon[0].sd_mutex );
1031 }
1032
1033 static void
1034 slapd_close( ber_socket_t s )
1035 {
1036         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
1037                 (long) s, 0, 0 );
1038         tcp_close( SLAP_FD2SOCK(s) );
1039 #ifdef HAVE_WINSOCK
1040         slapd_sockdel( s );
1041 #endif
1042 }
1043
1044 static void
1045 slap_free_listener_addresses( struct sockaddr **sal )
1046 {
1047         struct sockaddr **sap;
1048         if (sal == NULL) return;
1049         for (sap = sal; *sap != NULL; sap++) ch_free(*sap);
1050         ch_free(sal);
1051 }
1052
1053 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
1054 static int
1055 get_url_perms(
1056         char    **exts,
1057         mode_t  *perms,
1058         int     *crit )
1059 {
1060         int     i;
1061
1062         assert( exts != NULL );
1063         assert( perms != NULL );
1064         assert( crit != NULL );
1065
1066         *crit = 0;
1067         for ( i = 0; exts[ i ]; i++ ) {
1068                 char    *type = exts[ i ];
1069                 int     c = 0;
1070
1071                 if ( type[ 0 ] == '!' ) {
1072                         c = 1;
1073                         type++;
1074                 }
1075
1076                 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=",
1077                         sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 )
1078                 {
1079                         char *value = type + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
1080                         mode_t p = 0;
1081                         int j;
1082
1083                         switch (strlen(value)) {
1084                         case 4:
1085                                 /* skip leading '0' */
1086                                 if ( value[ 0 ] != '0' ) return LDAP_OTHER;
1087                                 value++;
1088
1089                         case 3:
1090                                 for ( j = 0; j < 3; j++) {
1091                                         int     v;
1092
1093                                         v = value[ j ] - '0';
1094
1095                                         if ( v < 0 || v > 7 ) return LDAP_OTHER;
1096
1097                                         p |= v << 3*(2-j);
1098                                 }
1099                                 break;
1100
1101                         case 10:
1102                                 for ( j = 1; j < 10; j++ ) {
1103                                         static mode_t   m[] = { 0,
1104                                                 S_IRUSR, S_IWUSR, S_IXUSR,
1105                                                 S_IRGRP, S_IWGRP, S_IXGRP,
1106                                                 S_IROTH, S_IWOTH, S_IXOTH
1107                                         };
1108                                         static const char       c[] = "-rwxrwxrwx";
1109
1110                                         if ( value[ j ] == c[ j ] ) {
1111                                                 p |= m[ j ];
1112
1113                                         } else if ( value[ j ] != '-' ) {
1114                                                 return LDAP_OTHER;
1115                                         }
1116                                 }
1117                                 break;
1118
1119                         default:
1120                                 return LDAP_OTHER;
1121                         }
1122
1123                         *crit = c;
1124                         *perms = p;
1125
1126                         return LDAP_SUCCESS;
1127                 }
1128         }
1129
1130         return LDAP_OTHER;
1131 }
1132 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
1133
1134 /* port = 0 indicates AF_LOCAL */
1135 static int
1136 slap_get_listener_addresses(
1137         const char *host,
1138         unsigned short port,
1139         struct sockaddr ***sal )
1140 {
1141         struct sockaddr **sap;
1142
1143 #ifdef LDAP_PF_LOCAL
1144         if ( port == 0 ) {
1145                 *sal = ch_malloc(2 * sizeof(void *));
1146                 if (*sal == NULL) return -1;
1147
1148                 sap = *sal;
1149                 *sap = ch_malloc(sizeof(struct sockaddr_un));
1150                 if (*sap == NULL) goto errexit;
1151                 sap[1] = NULL;
1152
1153                 if ( strlen(host) >
1154                         (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) )
1155                 {
1156                         Debug( LDAP_DEBUG_ANY,
1157                                 "daemon: domain socket path (%s) too long in URL",
1158                                 host, 0, 0);
1159                         goto errexit;
1160                 }
1161
1162                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
1163                 (*sap)->sa_family = AF_LOCAL;
1164                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
1165         } else
1166 #endif /* LDAP_PF_LOCAL */
1167         {
1168 #ifdef HAVE_GETADDRINFO
1169                 struct addrinfo hints, *res, *sai;
1170                 int n, err;
1171                 char serv[7];
1172
1173                 memset( &hints, '\0', sizeof(hints) );
1174                 hints.ai_flags = AI_PASSIVE;
1175                 hints.ai_socktype = SOCK_STREAM;
1176                 hints.ai_family = slap_inet4or6;
1177                 snprintf(serv, sizeof serv, "%d", port);
1178
1179                 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
1180                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo() failed: %s\n",
1181                                 AC_GAI_STRERROR(err), 0, 0);
1182                         return -1;
1183                 }
1184
1185                 sai = res;
1186                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
1187                         /* EMPTY */ ;
1188                 }
1189                 *sal = ch_calloc(n, sizeof(void *));
1190                 if (*sal == NULL) return -1;
1191
1192                 sap = *sal;
1193                 *sap = NULL;
1194
1195                 for ( sai=res; sai; sai=sai->ai_next ) {
1196                         if( sai->ai_addr == NULL ) {
1197                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
1198                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
1199                                 freeaddrinfo(res);
1200                                 goto errexit;
1201                         }
1202
1203                         switch (sai->ai_family) {
1204 #  ifdef LDAP_PF_INET6
1205                         case AF_INET6:
1206                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
1207                                 if (*sap == NULL) {
1208                                         freeaddrinfo(res);
1209                                         goto errexit;
1210                                 }
1211                                 *(struct sockaddr_in6 *)*sap =
1212                                         *((struct sockaddr_in6 *)sai->ai_addr);
1213                                 break;
1214 #  endif /* LDAP_PF_INET6 */
1215                         case AF_INET:
1216                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
1217                                 if (*sap == NULL) {
1218                                         freeaddrinfo(res);
1219                                         goto errexit;
1220                                 }
1221                                 *(struct sockaddr_in *)*sap =
1222                                         *((struct sockaddr_in *)sai->ai_addr);
1223                                 break;
1224                         default:
1225                                 *sap = NULL;
1226                                 break;
1227                         }
1228
1229                         if (*sap != NULL) {
1230                                 (*sap)->sa_family = sai->ai_family;
1231                                 sap++;
1232                                 *sap = NULL;
1233                         }
1234                 }
1235
1236                 freeaddrinfo(res);
1237
1238 #else /* ! HAVE_GETADDRINFO */
1239                 int i, n = 1;
1240                 struct in_addr in;
1241                 struct hostent *he = NULL;
1242
1243                 if ( host == NULL ) {
1244                         in.s_addr = htonl(INADDR_ANY);
1245
1246                 } else if ( !inet_aton( host, &in ) ) {
1247                         he = gethostbyname( host );
1248                         if( he == NULL ) {
1249                                 Debug( LDAP_DEBUG_ANY,
1250                                         "daemon: invalid host %s", host, 0, 0);
1251                                 return -1;
1252                         }
1253                         for (n = 0; he->h_addr_list[n]; n++) /* empty */;
1254                 }
1255
1256                 *sal = ch_malloc((n+1) * sizeof(void *));
1257                 if (*sal == NULL) return -1;
1258
1259                 sap = *sal;
1260                 for ( i = 0; i<n; i++ ) {
1261                         sap[i] = ch_malloc(sizeof(struct sockaddr_in));
1262                         if (*sap == NULL) goto errexit;
1263
1264                         (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
1265                         sap[i]->sa_family = AF_INET;
1266                         ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
1267                         AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr,
1268                                 he ? (struct in_addr *)he->h_addr_list[i] : &in,
1269                                 sizeof(struct in_addr) );
1270                 }
1271                 sap[i] = NULL;
1272 #endif /* ! HAVE_GETADDRINFO */
1273         }
1274
1275         return 0;
1276
1277 errexit:
1278         slap_free_listener_addresses(*sal);
1279         return -1;
1280 }
1281
1282 static int
1283 slap_open_listener(
1284         const char* url,
1285         int *listeners,
1286         int *cur )
1287 {
1288         int     num, tmp, rc;
1289         Listener l;
1290         Listener *li;
1291         LDAPURLDesc *lud;
1292         unsigned short port;
1293         int err, addrlen = 0;
1294         struct sockaddr **sal, **psal;
1295         int socktype = SOCK_STREAM;     /* default to COTS */
1296         ber_socket_t s;
1297
1298 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
1299         /*
1300          * use safe defaults
1301          */
1302         int     crit = 1;
1303 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
1304
1305         rc = ldap_url_parse( url, &lud );
1306
1307         if( rc != LDAP_URL_SUCCESS ) {
1308                 Debug( LDAP_DEBUG_ANY,
1309                         "daemon: listen URL \"%s\" parse error=%d\n",
1310                         url, rc, 0 );
1311                 return rc;
1312         }
1313
1314         l.sl_url.bv_val = NULL;
1315         l.sl_mute = 0;
1316         l.sl_busy = 0;
1317
1318 #ifndef HAVE_TLS
1319         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
1320                 Debug( LDAP_DEBUG_ANY, "daemon: TLS not supported (%s)\n",
1321                         url, 0, 0 );
1322                 ldap_free_urldesc( lud );
1323                 return -1;
1324         }
1325
1326         if(! lud->lud_port ) lud->lud_port = LDAP_PORT;
1327
1328 #else /* HAVE_TLS */
1329         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
1330
1331         if(! lud->lud_port ) {
1332                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
1333         }
1334 #endif /* HAVE_TLS */
1335
1336 #ifdef LDAP_TCP_BUFFER
1337         l.sl_tcp_rmem = 0;
1338         l.sl_tcp_wmem = 0;
1339 #endif /* LDAP_TCP_BUFFER */
1340
1341         port = (unsigned short) lud->lud_port;
1342
1343         tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
1344         if ( tmp == LDAP_PROTO_IPC ) {
1345 #ifdef LDAP_PF_LOCAL
1346                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
1347                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
1348                 } else {
1349                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
1350                 }
1351 #else /* ! LDAP_PF_LOCAL */
1352
1353                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
1354                         url, 0, 0);
1355                 ldap_free_urldesc( lud );
1356                 return -1;
1357 #endif /* ! LDAP_PF_LOCAL */
1358         } else {
1359                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
1360                         || strcmp(lud->lud_host, "*") == 0 )
1361                 {
1362                         err = slap_get_listener_addresses(NULL, port, &sal);
1363                 } else {
1364                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
1365                 }
1366         }
1367
1368 #ifdef LDAP_CONNECTIONLESS
1369         l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
1370 #endif /* LDAP_CONNECTIONLESS */
1371
1372 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
1373         if ( lud->lud_exts ) {
1374                 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
1375         } else {
1376                 l.sl_perms = S_IRWXU | S_IRWXO;
1377         }
1378 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
1379
1380         ldap_free_urldesc( lud );
1381         if ( err ) {
1382                 slap_free_listener_addresses(sal);
1383                 return -1;
1384         }
1385
1386         /* If we got more than one address returned, we need to make space
1387          * for it in the slap_listeners array.
1388          */
1389         for ( num=0; sal[num]; num++ ) /* empty */;
1390         if ( num > 1 ) {
1391                 *listeners += num-1;
1392                 slap_listeners = ch_realloc( slap_listeners,
1393                         (*listeners + 1) * sizeof(Listener *) );
1394         }
1395
1396         psal = sal;
1397         while ( *sal != NULL ) {
1398                 char *af;
1399                 switch( (*sal)->sa_family ) {
1400                 case AF_INET:
1401                         af = "IPv4";
1402                         break;
1403 #ifdef LDAP_PF_INET6
1404                 case AF_INET6:
1405                         af = "IPv6";
1406                         break;
1407 #endif /* LDAP_PF_INET6 */
1408 #ifdef LDAP_PF_LOCAL
1409                 case AF_LOCAL:
1410                         af = "Local";
1411                         break;
1412 #endif /* LDAP_PF_LOCAL */
1413                 default:
1414                         sal++;
1415                         continue;
1416                 }
1417
1418 #ifdef LDAP_CONNECTIONLESS
1419                 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
1420 #endif /* LDAP_CONNECTIONLESS */
1421
1422                 s = socket( (*sal)->sa_family, socktype, 0);
1423                 if ( s == AC_SOCKET_INVALID ) {
1424                         int err = sock_errno();
1425                         Debug( LDAP_DEBUG_ANY,
1426                                 "daemon: %s socket() failed errno=%d (%s)\n",
1427                                 af, err, sock_errstr(err) );
1428                         sal++;
1429                         continue;
1430                 }
1431                 l.sl_sd = SLAP_SOCKNEW( s );
1432
1433                 if ( l.sl_sd >= dtblsize ) {
1434                         Debug( LDAP_DEBUG_ANY,
1435                                 "daemon: listener descriptor %ld is too great %ld\n",
1436                                 (long) l.sl_sd, (long) dtblsize, 0 );
1437                         tcp_close( s );
1438                         sal++;
1439                         continue;
1440                 }
1441
1442 #ifdef LDAP_PF_LOCAL
1443                 if ( (*sal)->sa_family == AF_LOCAL ) {
1444                         unlink( ((struct sockaddr_un *)*sal)->sun_path );
1445                 } else
1446 #endif /* LDAP_PF_LOCAL */
1447                 {
1448 #ifdef SO_REUSEADDR
1449                         /* enable address reuse */
1450                         tmp = 1;
1451                         rc = setsockopt( s, SOL_SOCKET, SO_REUSEADDR,
1452                                 (char *) &tmp, sizeof(tmp) );
1453                         if ( rc == AC_SOCKET_ERROR ) {
1454                                 int err = sock_errno();
1455                                 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1456                                         "setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
1457                                         (long) l.sl_sd, err, sock_errstr(err) );
1458                         }
1459 #endif /* SO_REUSEADDR */
1460                 }
1461
1462                 switch( (*sal)->sa_family ) {
1463                 case AF_INET:
1464                         addrlen = sizeof(struct sockaddr_in);
1465                         break;
1466 #ifdef LDAP_PF_INET6
1467                 case AF_INET6:
1468 #ifdef IPV6_V6ONLY
1469                         /* Try to use IPv6 sockets for IPv6 only */
1470                         tmp = 1;
1471                         rc = setsockopt( s , IPPROTO_IPV6, IPV6_V6ONLY,
1472                                 (char *) &tmp, sizeof(tmp) );
1473                         if ( rc == AC_SOCKET_ERROR ) {
1474                                 int err = sock_errno();
1475                                 Debug( LDAP_DEBUG_ANY, "slapd(%ld): "
1476                                         "setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
1477                                         (long) l.sl_sd, err, sock_errstr(err) );
1478                         }
1479 #endif /* IPV6_V6ONLY */
1480                         addrlen = sizeof(struct sockaddr_in6);
1481                         break;
1482 #endif /* LDAP_PF_INET6 */
1483
1484 #ifdef LDAP_PF_LOCAL
1485                 case AF_LOCAL:
1486 #ifdef LOCAL_CREDS
1487                         {
1488                                 int one = 1;
1489                                 setsockopt( s, 0, LOCAL_CREDS, &one, sizeof( one ) );
1490                         }
1491 #endif /* LOCAL_CREDS */
1492
1493                         addrlen = sizeof( struct sockaddr_un );
1494                         break;
1495 #endif /* LDAP_PF_LOCAL */
1496                 }
1497
1498 #ifdef LDAP_PF_LOCAL
1499                 /* create socket with all permissions set for those systems
1500                  * that honor permissions on sockets (e.g. Linux); typically,
1501                  * only write is required.  To exploit filesystem permissions,
1502                  * place the socket in a directory and use directory's
1503                  * permissions.  Need write perms to the directory to
1504                  * create/unlink the socket; likely need exec perms to access
1505                  * the socket (ITS#4709) */
1506                 {
1507                         mode_t old_umask = 0;
1508
1509                         if ( (*sal)->sa_family == AF_LOCAL ) {
1510                                 old_umask = umask( 0 );
1511                         }
1512 #endif /* LDAP_PF_LOCAL */
1513                         rc = bind( s, *sal, addrlen );
1514 #ifdef LDAP_PF_LOCAL
1515                         if ( old_umask != 0 ) {
1516                                 umask( old_umask );
1517                         }
1518                 }
1519 #endif /* LDAP_PF_LOCAL */
1520                 if ( rc ) {
1521                         err = sock_errno();
1522                         Debug( LDAP_DEBUG_ANY,
1523                                 "daemon: bind(%ld) failed errno=%d (%s)\n",
1524                                 (long)l.sl_sd, err, sock_errstr( err ) );
1525                         tcp_close( s );
1526                         sal++;
1527                         continue;
1528                 }
1529
1530                 switch ( (*sal)->sa_family ) {
1531 #ifdef LDAP_PF_LOCAL
1532                 case AF_LOCAL: {
1533                         char *path = ((struct sockaddr_un *)*sal)->sun_path;
1534                         l.sl_name.bv_len = strlen(path) + STRLENOF("PATH=");
1535                         l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
1536                         snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
1537                                 "PATH=%s", path );
1538                 } break;
1539 #endif /* LDAP_PF_LOCAL */
1540
1541                 case AF_INET: {
1542                         char addr[INET_ADDRSTRLEN];
1543                         const char *s;
1544 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1545                         s = inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
1546                                 addr, sizeof(addr) );
1547 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1548                         s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
1549 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1550                         if (!s) s = SLAP_STRING_UNKNOWN;
1551                         port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
1552                         l.sl_name.bv_val =
1553                                 ber_memalloc( sizeof("IP=255.255.255.255:65535") );
1554                         snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
1555                                 "IP=%s:%d", s, port );
1556                         l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1557                 } break;
1558
1559 #ifdef LDAP_PF_INET6
1560                 case AF_INET6: {
1561                         char addr[INET6_ADDRSTRLEN];
1562                         const char *s;
1563                         s = inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
1564                                 addr, sizeof addr);
1565                         if (!s) s = SLAP_STRING_UNKNOWN;
1566                         port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
1567                         l.sl_name.bv_len = strlen(s) + sizeof("IP=[]:65535");
1568                         l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
1569                         snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=[%s]:%d",
1570                                 s, port );
1571                         l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1572                 } break;
1573 #endif /* LDAP_PF_INET6 */
1574
1575                 default:
1576                         Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
1577                                 (int) (*sal)->sa_family, 0, 0 );
1578                         break;
1579                 }
1580
1581                 AC_MEMCPY(&l.sl_sa, *sal, addrlen);
1582                 ber_str2bv( url, 0, 1, &l.sl_url);
1583                 li = ch_malloc( sizeof( Listener ) );
1584                 *li = l;
1585                 slap_listeners[*cur] = li;
1586                 (*cur)++;
1587                 sal++;
1588         }
1589
1590         slap_free_listener_addresses(psal);
1591
1592         if ( l.sl_url.bv_val == NULL ) {
1593                 Debug( LDAP_DEBUG_TRACE,
1594                         "slap_open_listener: failed on %s\n", url, 0, 0 );
1595                 return -1;
1596         }
1597
1598         Debug( LDAP_DEBUG_TRACE, "daemon: listener initialized %s\n",
1599                 l.sl_url.bv_val, 0, 0 );
1600         return 0;
1601 }
1602
1603 static int sockinit(void);
1604 static int sockdestroy(void);
1605
1606 static int daemon_inited = 0;
1607
1608 int
1609 slapd_daemon_init( const char *urls )
1610 {
1611         int i, j, n, rc;
1612         char **u;
1613
1614         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
1615                 urls ? urls : "<null>", 0, 0 );
1616
1617         for ( i=0; i<SLAPD_MAX_DAEMON_THREADS; i++ ) {
1618                 wake_sds[i][0] = AC_SOCKET_INVALID;
1619                 wake_sds[i][1] = AC_SOCKET_INVALID;
1620         }
1621
1622         ldap_pvt_thread_mutex_init( &slap_daemon[0].sd_mutex );
1623 #ifdef HAVE_TCPD
1624         ldap_pvt_thread_mutex_init( &sd_tcpd_mutex );
1625 #endif /* TCP Wrappers */
1626
1627         daemon_inited = 1;
1628
1629         if( (rc = sockinit()) != 0 ) return rc;
1630
1631 #ifdef HAVE_SYSCONF
1632         dtblsize = sysconf( _SC_OPEN_MAX );
1633 #elif defined(HAVE_GETDTABLESIZE)
1634         dtblsize = getdtablesize();
1635 #else /* ! HAVE_SYSCONF && ! HAVE_GETDTABLESIZE */
1636         dtblsize = FD_SETSIZE;
1637 #endif /* ! HAVE_SYSCONF && ! HAVE_GETDTABLESIZE */
1638
1639         /* open a pipe (or something equivalent connected to itself).
1640          * we write a byte on this fd whenever we catch a signal. The main
1641          * loop will be select'ing on this socket, and will wake up when
1642          * this byte arrives.
1643          */
1644         if( (rc = lutil_pair( wake_sds[0] )) < 0 ) {
1645                 Debug( LDAP_DEBUG_ANY,
1646                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
1647                 return rc;
1648         }
1649         ber_pvt_socket_set_nonblock( wake_sds[0][1], 1 );
1650
1651         SLAP_SOCK_INIT(0);
1652
1653         if( urls == NULL ) urls = "ldap:///";
1654
1655         u = ldap_str2charray( urls, " " );
1656
1657         if( u == NULL || u[0] == NULL ) {
1658                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1659                         urls, 0, 0 );
1660                 if ( u )
1661                         ldap_charray_free( u );
1662                 return -1;
1663         }
1664
1665         for( i=0; u[i] != NULL; i++ ) {
1666                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1667                         u[i], 0, 0 );
1668         }
1669
1670         if( i == 0 ) {
1671                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1672                         urls, 0, 0 );
1673                 ldap_charray_free( u );
1674                 return -1;
1675         }
1676
1677         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1678                 i, 0, 0 );
1679         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1680
1681         for(n = 0, j = 0; u[n]; n++ ) {
1682                 if ( slap_open_listener( u[n], &i, &j ) ) {
1683                         ldap_charray_free( u );
1684                         return -1;
1685                 }
1686         }
1687         slap_listeners[j] = NULL;
1688
1689         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1690                 i, 0, 0 );
1691
1692
1693 #ifdef HAVE_SLP
1694         if( slapd_register_slp ) {
1695                 slapd_slp_init( urls );
1696                 slapd_slp_reg();
1697         }
1698 #endif /* HAVE_SLP */
1699
1700         ldap_charray_free( u );
1701
1702         return !i;
1703 }
1704
1705
1706 int
1707 slapd_daemon_destroy( void )
1708 {
1709         connections_destroy();
1710         if ( daemon_inited ) {
1711                 int i;
1712
1713                 for ( i=0; i<slapd_daemon_threads; i++ ) {
1714 #ifdef HAVE_WINSOCK
1715                         if ( wake_sds[i][1] != INVALID_SOCKET &&
1716                                 SLAP_FD2SOCK( wake_sds[i][1] ) != SLAP_FD2SOCK( wake_sds[i][0] ))
1717 #endif /* HAVE_WINSOCK */
1718                                 tcp_close( SLAP_FD2SOCK(wake_sds[i][1]) );
1719 #ifdef HAVE_WINSOCK
1720                         if ( wake_sds[i][0] != INVALID_SOCKET )
1721 #endif /* HAVE_WINSOCK */
1722                                 tcp_close( SLAP_FD2SOCK(wake_sds[i][0]) );
1723                         ldap_pvt_thread_mutex_destroy( &slap_daemon[i].sd_mutex );
1724                         SLAP_SOCK_DESTROY(i);
1725                 }
1726                 daemon_inited = 0;
1727 #ifdef HAVE_TCPD
1728                 ldap_pvt_thread_mutex_destroy( &sd_tcpd_mutex );
1729 #endif /* TCP Wrappers */
1730         }
1731         sockdestroy();
1732
1733 #ifdef HAVE_SLP
1734         if( slapd_register_slp ) {
1735                 slapd_slp_dereg();
1736                 slapd_slp_deinit();
1737         }
1738 #endif /* HAVE_SLP */
1739
1740         return 0;
1741 }
1742
1743
1744 static void
1745 close_listeners(
1746         int remove )
1747 {
1748         int l;
1749
1750         if ( !listening )
1751                 return;
1752         listening = 0;
1753
1754         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1755                 Listener *lr = slap_listeners[l];
1756
1757                 if ( lr->sl_sd != AC_SOCKET_INVALID ) {
1758                         int s = lr->sl_sd;
1759                         lr->sl_sd = AC_SOCKET_INVALID;
1760                         if ( remove ) slapd_remove( s, NULL, 0, 0, 0 );
1761
1762 #ifdef LDAP_PF_LOCAL
1763                         if ( lr->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1764                                 unlink( lr->sl_sa.sa_un_addr.sun_path );
1765                         }
1766 #endif /* LDAP_PF_LOCAL */
1767
1768                         slapd_close( s );
1769                 }
1770         }
1771 }
1772
1773 static void
1774 destroy_listeners( void )
1775 {
1776         Listener *lr, **ll = slap_listeners;
1777
1778         if ( ll == NULL )
1779                 return;
1780
1781         while ( (lr = *ll++) != NULL ) {
1782                 if ( lr->sl_url.bv_val ) {
1783                         ber_memfree( lr->sl_url.bv_val );
1784                 }
1785
1786                 if ( lr->sl_name.bv_val ) {
1787                         ber_memfree( lr->sl_name.bv_val );
1788                 }
1789
1790                 free( lr );
1791         }
1792
1793         free( slap_listeners );
1794         slap_listeners = NULL;
1795 }
1796
1797 static int
1798 slap_listener(
1799         Listener *sl )
1800 {
1801         Sockaddr                from;
1802
1803         ber_socket_t s, sfd;
1804         ber_socklen_t len = sizeof(from);
1805         Connection *c;
1806         slap_ssf_t ssf = 0;
1807         struct berval authid = BER_BVNULL;
1808 #ifdef SLAPD_RLOOKUPS
1809         char hbuf[NI_MAXHOST];
1810 #endif /* SLAPD_RLOOKUPS */
1811
1812         char    *dnsname = NULL;
1813         const char *peeraddr = NULL;
1814         /* we assume INET6_ADDRSTRLEN > INET_ADDRSTRLEN */
1815         char addr[INET6_ADDRSTRLEN];
1816 #ifdef LDAP_PF_LOCAL
1817         char peername[MAXPATHLEN + sizeof("PATH=")];
1818 #ifdef LDAP_PF_LOCAL_SENDMSG
1819         char peerbuf[8];
1820         struct berval peerbv = BER_BVNULL;
1821 #endif
1822 #elif defined(LDAP_PF_INET6)
1823         char peername[sizeof("IP=[ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff]:65535")];
1824 #else /* ! LDAP_PF_LOCAL && ! LDAP_PF_INET6 */
1825         char peername[sizeof("IP=255.255.255.255:65336")];
1826 #endif /* LDAP_PF_LOCAL */
1827         int cflag;
1828         int tid;
1829
1830         Debug( LDAP_DEBUG_TRACE,
1831                 ">>> slap_listener(%s)\n",
1832                 sl->sl_url.bv_val, 0, 0 );
1833
1834         peername[0] = '\0';
1835
1836 #ifdef LDAP_CONNECTIONLESS
1837         if ( sl->sl_is_udp ) return 1;
1838 #endif /* LDAP_CONNECTIONLESS */
1839
1840 #  ifdef LDAP_PF_LOCAL
1841         /* FIXME: apparently accept doesn't fill
1842          * the sun_path sun_path member */
1843         from.sa_un_addr.sun_path[0] = '\0';
1844 #  endif /* LDAP_PF_LOCAL */
1845
1846         s = accept( SLAP_FD2SOCK( sl->sl_sd ), (struct sockaddr *) &from, &len );
1847
1848         /* Resume the listener FD to allow concurrent-processing of
1849          * additional incoming connections.
1850          */
1851         sl->sl_busy = 0;
1852         WAKE_LISTENER(DAEMON_ID(sl->sl_sd),1);
1853
1854         if ( s == AC_SOCKET_INVALID ) {
1855                 int err = sock_errno();
1856
1857                 if(
1858 #ifdef EMFILE
1859                     err == EMFILE ||
1860 #endif /* EMFILE */
1861 #ifdef ENFILE
1862                     err == ENFILE ||
1863 #endif /* ENFILE */
1864                     0 )
1865                 {
1866                         ldap_pvt_thread_mutex_lock( &slap_daemon[0].sd_mutex );
1867                         emfile++;
1868                         /* Stop listening until an existing session closes */
1869                         sl->sl_mute = 1;
1870                         ldap_pvt_thread_mutex_unlock( &slap_daemon[0].sd_mutex );
1871                 }
1872
1873                 Debug( LDAP_DEBUG_ANY,
1874                         "daemon: accept(%ld) failed errno=%d (%s)\n",
1875                         (long) sl->sl_sd, err, sock_errstr(err) );
1876                 ldap_pvt_thread_yield();
1877                 return 0;
1878         }
1879         sfd = SLAP_SOCKNEW( s );
1880
1881         /* make sure descriptor number isn't too great */
1882         if ( sfd >= dtblsize ) {
1883                 Debug( LDAP_DEBUG_ANY,
1884                         "daemon: %ld beyond descriptor table size %ld\n",
1885                         (long) sfd, (long) dtblsize, 0 );
1886
1887                 tcp_close(s);
1888                 ldap_pvt_thread_yield();
1889                 return 0;
1890         }
1891         tid = DAEMON_ID(sfd);
1892
1893 #ifdef LDAP_DEBUG
1894         ldap_pvt_thread_mutex_lock( &slap_daemon[tid].sd_mutex );
1895         /* newly accepted stream should not be in any of the FD SETS */
1896         assert( SLAP_SOCK_NOT_ACTIVE( tid, sfd ));
1897         ldap_pvt_thread_mutex_unlock( &slap_daemon[tid].sd_mutex );
1898 #endif /* LDAP_DEBUG */
1899
1900 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1901 #ifdef LDAP_PF_LOCAL
1902         /* for IPv4 and IPv6 sockets only */
1903         if ( from.sa_addr.sa_family != AF_LOCAL )
1904 #endif /* LDAP_PF_LOCAL */
1905         {
1906                 int rc;
1907                 int tmp;
1908 #ifdef SO_KEEPALIVE
1909                 /* enable keep alives */
1910                 tmp = 1;
1911                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1912                         (char *) &tmp, sizeof(tmp) );
1913                 if ( rc == AC_SOCKET_ERROR ) {
1914                         int err = sock_errno();
1915                         Debug( LDAP_DEBUG_ANY,
1916                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1917                                 "errno=%d (%s)\n", (long) sfd, err, sock_errstr(err) );
1918                 }
1919 #endif /* SO_KEEPALIVE */
1920 #ifdef TCP_NODELAY
1921                 /* enable no delay */
1922                 tmp = 1;
1923                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1924                         (char *)&tmp, sizeof(tmp) );
1925                 if ( rc == AC_SOCKET_ERROR ) {
1926                         int err = sock_errno();
1927                         Debug( LDAP_DEBUG_ANY,
1928                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1929                                 "errno=%d (%s)\n", (long) sfd, err, sock_errstr(err) );
1930                 }
1931 #endif /* TCP_NODELAY */
1932         }
1933 #endif /* SO_KEEPALIVE || TCP_NODELAY */
1934
1935         Debug( LDAP_DEBUG_CONNS,
1936                 "daemon: listen=%ld, new connection on %ld\n",
1937                 (long) sl->sl_sd, (long) sfd, 0 );
1938
1939         cflag = 0;
1940         switch ( from.sa_addr.sa_family ) {
1941 #  ifdef LDAP_PF_LOCAL
1942         case AF_LOCAL:
1943                 cflag |= CONN_IS_IPC;
1944
1945                 /* FIXME: apparently accept doesn't fill
1946                  * the sun_path sun_path member */
1947                 if ( from.sa_un_addr.sun_path[0] == '\0' ) {
1948                         AC_MEMCPY( from.sa_un_addr.sun_path,
1949                                         sl->sl_sa.sa_un_addr.sun_path,
1950                                         sizeof( from.sa_un_addr.sun_path ) );
1951                 }
1952
1953                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1954                 ssf = local_ssf;
1955                 {
1956                         uid_t uid;
1957                         gid_t gid;
1958
1959 #ifdef LDAP_PF_LOCAL_SENDMSG
1960                         peerbv.bv_val = peerbuf;
1961                         peerbv.bv_len = sizeof( peerbuf );
1962 #endif
1963                         if( LUTIL_GETPEEREID( s, &uid, &gid, &peerbv ) == 0 ) {
1964                                 authid.bv_val = ch_malloc(
1965                                         STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1966                                         "cn=peercred,cn=external,cn=auth" ) + 1 );
1967                                 authid.bv_len = sprintf( authid.bv_val,
1968                                         "gidNumber=%d+uidNumber=%d,"
1969                                         "cn=peercred,cn=external,cn=auth",
1970                                         (int) gid, (int) uid );
1971                                 assert( authid.bv_len <=
1972                                         STRLENOF( "gidNumber=4294967295+uidNumber=4294967295,"
1973                                         "cn=peercred,cn=external,cn=auth" ) );
1974                         }
1975                 }
1976                 dnsname = "local";
1977                 break;
1978 #endif /* LDAP_PF_LOCAL */
1979
1980 #  ifdef LDAP_PF_INET6
1981         case AF_INET6:
1982         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1983 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1984                 peeraddr = inet_ntop( AF_INET,
1985                            ((struct in_addr *)&from.sa_in6_addr.sin6_addr.s6_addr[12]),
1986                            addr, sizeof(addr) );
1987 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1988                 peeraddr = inet_ntoa( *((struct in_addr *)
1989                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1990 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
1991                 if ( !peeraddr ) peeraddr = SLAP_STRING_UNKNOWN;
1992                 sprintf( peername, "IP=%s:%d", peeraddr,
1993                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1994         } else {
1995                 peeraddr = inet_ntop( AF_INET6,
1996                                       &from.sa_in6_addr.sin6_addr,
1997                                       addr, sizeof addr );
1998                 if ( !peeraddr ) peeraddr = SLAP_STRING_UNKNOWN;
1999                 sprintf( peername, "IP=[%s]:%d", peeraddr,
2000                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
2001         }
2002         break;
2003 #  endif /* LDAP_PF_INET6 */
2004
2005         case AF_INET: {
2006 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
2007                 peeraddr = inet_ntop( AF_INET, &from.sa_in_addr.sin_addr,
2008                            addr, sizeof(addr) );
2009 #else /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
2010                 peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
2011 #endif /* ! HAVE_GETADDRINFO || ! HAVE_INET_NTOP */
2012                 if ( !peeraddr ) peeraddr = SLAP_STRING_UNKNOWN;
2013                 sprintf( peername, "IP=%s:%d", peeraddr,
2014                         (unsigned) ntohs( from.sa_in_addr.sin_port ) );
2015                 } break;
2016
2017         default:
2018                 slapd_close(sfd);
2019                 return 0;
2020         }
2021
2022         if ( ( from.sa_addr.sa_family == AF_INET )
2023 #ifdef LDAP_PF_INET6
2024                 || ( from.sa_addr.sa_family == AF_INET6 )
2025 #endif /* LDAP_PF_INET6 */
2026                 )
2027         {
2028                 dnsname = NULL;
2029 #ifdef SLAPD_RLOOKUPS
2030                 if ( use_reverse_lookup ) {
2031                         char *herr;
2032                         if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
2033                                 sizeof(hbuf), &herr ) == 0) {
2034                                 ldap_pvt_str2lower( hbuf );
2035                                 dnsname = hbuf;
2036                         }
2037                 }
2038 #endif /* SLAPD_RLOOKUPS */
2039
2040 #ifdef HAVE_TCPD
2041                 {
2042                         int rc;
2043                         ldap_pvt_thread_mutex_lock( &sd_tcpd_mutex );
2044                         rc = hosts_ctl("slapd",
2045                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
2046                                 peeraddr,
2047                                 SLAP_STRING_UNKNOWN );
2048                         ldap_pvt_thread_mutex_unlock( &sd_tcpd_mutex );
2049                         if ( !rc ) {
2050                                 /* DENY ACCESS */
2051                                 Statslog( LDAP_DEBUG_STATS,
2052                                         "fd=%ld DENIED from %s (%s)\n",
2053                                         (long) sfd,
2054                                         dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
2055                                         peeraddr, 0, 0 );
2056                                 slapd_close(sfd);
2057                                 return 0;
2058                         }
2059                 }
2060 #endif /* HAVE_TCPD */
2061         }
2062
2063 #ifdef HAVE_TLS
2064         if ( sl->sl_is_tls ) cflag |= CONN_IS_TLS;
2065 #endif
2066         c = connection_init(sfd, sl,
2067                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
2068                 peername, cflag, ssf,
2069                 authid.bv_val ? &authid : NULL
2070                 LDAP_PF_LOCAL_SENDMSG_ARG(&peerbv));
2071
2072         if( authid.bv_val ) ch_free(authid.bv_val);
2073
2074         if( !c ) {
2075                 Debug( LDAP_DEBUG_ANY,
2076                         "daemon: connection_init(%ld, %s, %s) failed.\n",
2077                         (long) sfd, peername, sl->sl_name.bv_val );
2078                 slapd_close(sfd);
2079         }
2080
2081         return 0;
2082 }
2083
2084 static void*
2085 slap_listener_thread(
2086         void* ctx,
2087         void* ptr )
2088 {
2089         int             rc;
2090         Listener        *sl = (Listener *)ptr;
2091
2092         rc = slap_listener( sl );
2093
2094         if( rc != LDAP_SUCCESS ) {
2095                 Debug( LDAP_DEBUG_ANY,
2096                         "slap_listener_thread(%s): failed err=%d",
2097                         sl->sl_url.bv_val, rc, 0 );
2098         }
2099
2100         return (void*)NULL;
2101 }
2102
2103 static int
2104 slap_listener_activate(
2105         Listener* sl )
2106 {
2107         int rc;
2108
2109         Debug( LDAP_DEBUG_TRACE, "slap_listener_activate(%d): %s\n",
2110                 sl->sl_sd, sl->sl_busy ? "busy" : "", 0 );
2111
2112         sl->sl_busy = 1;
2113
2114         rc = ldap_pvt_thread_pool_submit( &connection_pool,
2115                 slap_listener_thread, (void *) sl );
2116
2117         if( rc != 0 ) {
2118                 Debug( LDAP_DEBUG_ANY,
2119                         "slap_listener_activate(%d): submit failed (%d)\n",
2120                         sl->sl_sd, rc, 0 );
2121         }
2122         return rc;
2123 }
2124
2125 static void *
2126 slapd_daemon_task(
2127         void *ptr )
2128 {
2129         int l;
2130         time_t last_idle_check = 0;
2131         int ebadf = 0;
2132         int tid = (ldap_pvt_thread_t *) ptr - listener_tid;
2133
2134 #define SLAPD_IDLE_CHECK_LIMIT 4
2135
2136         slapd_add( wake_sds[tid][0], 0, NULL, tid );
2137         if ( tid )
2138                 goto loop;
2139
2140         /* Init stuff done only by thread 0 */
2141
2142         last_idle_check = slap_get_time();
2143
2144         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2145                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
2146
2147 #ifdef LDAP_CONNECTIONLESS
2148                 /* Since this is connectionless, the data port is the
2149                  * listening port. The listen() and accept() calls
2150                  * are unnecessary.
2151                  */
2152                 if ( slap_listeners[l]->sl_is_udp )
2153                         continue;
2154 #endif /* LDAP_CONNECTIONLESS */
2155
2156                 /* FIXME: TCP-only! */
2157 #ifdef LDAP_TCP_BUFFER
2158                 if ( 1 ) {
2159                         int origsize, size, realsize, rc;
2160                         socklen_t optlen;
2161                         char buf[ SLAP_TEXT_BUFLEN ];
2162
2163                         size = 0;
2164                         if ( slap_listeners[l]->sl_tcp_rmem > 0 ) {
2165                                 size = slap_listeners[l]->sl_tcp_rmem;
2166                         } else if ( slapd_tcp_rmem > 0 ) {
2167                                 size = slapd_tcp_rmem;
2168                         }
2169
2170                         if ( size > 0 ) {
2171                                 optlen = sizeof( origsize );
2172                                 rc = getsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
2173                                         SOL_SOCKET,
2174                                         SO_RCVBUF,
2175                                         (void *)&origsize,
2176                                         &optlen );
2177
2178                                 if ( rc ) {
2179                                         int err = sock_errno();
2180                                         Debug( LDAP_DEBUG_ANY,
2181                                                 "slapd_daemon_task: getsockopt(SO_RCVBUF) failed errno=%d (%s)\n",
2182                                                 err, sock_errstr(err), 0 );
2183                                 }
2184
2185                                 optlen = sizeof( size );
2186                                 rc = setsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
2187                                         SOL_SOCKET,
2188                                         SO_RCVBUF,
2189                                         (const void *)&size,
2190                                         optlen );
2191
2192                                 if ( rc ) {
2193                                         int err = sock_errno();
2194                                         Debug( LDAP_DEBUG_ANY,
2195                                                 "slapd_daemon_task: setsockopt(SO_RCVBUF) failed errno=%d (%s)\n",
2196                                                 err, sock_errstr(err), 0 );
2197                                 }
2198
2199                                 optlen = sizeof( realsize );
2200                                 rc = getsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
2201                                         SOL_SOCKET,
2202                                         SO_RCVBUF,
2203                                         (void *)&realsize,
2204                                         &optlen );
2205
2206                                 if ( rc ) {
2207                                         int err = sock_errno();
2208                                         Debug( LDAP_DEBUG_ANY,
2209                                                 "slapd_daemon_task: getsockopt(SO_RCVBUF) failed errno=%d (%s)\n",
2210                                                 err, sock_errstr(err), 0 );
2211                                 }
2212
2213                                 snprintf( buf, sizeof( buf ),
2214                                         "url=%s (#%d) RCVBUF original size=%d requested size=%d real size=%d",
2215                                         slap_listeners[l]->sl_url.bv_val, l, origsize, size, realsize );
2216                                 Debug( LDAP_DEBUG_ANY,
2217                                         "slapd_daemon_task: %s\n",
2218                                         buf, 0, 0 );
2219                         }
2220
2221                         size = 0;
2222                         if ( slap_listeners[l]->sl_tcp_wmem > 0 ) {
2223                                 size = slap_listeners[l]->sl_tcp_wmem;
2224                         } else if ( slapd_tcp_wmem > 0 ) {
2225                                 size = slapd_tcp_wmem;
2226                         }
2227
2228                         if ( size > 0 ) {
2229                                 optlen = sizeof( origsize );
2230                                 rc = getsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
2231                                         SOL_SOCKET,
2232                                         SO_SNDBUF,
2233                                         (void *)&origsize,
2234                                         &optlen );
2235
2236                                 if ( rc ) {
2237                                         int err = sock_errno();
2238                                         Debug( LDAP_DEBUG_ANY,
2239                                                 "slapd_daemon_task: getsockopt(SO_SNDBUF) failed errno=%d (%s)\n",
2240                                                 err, sock_errstr(err), 0 );
2241                                 }
2242
2243                                 optlen = sizeof( size );
2244                                 rc = setsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
2245                                         SOL_SOCKET,
2246                                         SO_SNDBUF,
2247                                         (const void *)&size,
2248                                         optlen );
2249
2250                                 if ( rc ) {
2251                                         int err = sock_errno();
2252                                         Debug( LDAP_DEBUG_ANY,
2253                                                 "slapd_daemon_task: setsockopt(SO_SNDBUF) failed errno=%d (%s)",
2254                                                 err, sock_errstr(err), 0 );
2255                                 }
2256
2257                                 optlen = sizeof( realsize );
2258                                 rc = getsockopt( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ),
2259                                         SOL_SOCKET,
2260                                         SO_SNDBUF,
2261                                         (void *)&realsize,
2262                                         &optlen );
2263
2264                                 if ( rc ) {
2265                                         int err = sock_errno();
2266                                         Debug( LDAP_DEBUG_ANY,
2267                                                 "slapd_daemon_task: getsockopt(SO_SNDBUF) failed errno=%d (%s)\n",
2268                                                 err, sock_errstr(err), 0 );
2269                                 }
2270
2271                                 snprintf( buf, sizeof( buf ),
2272                                         "url=%s (#%d) SNDBUF original size=%d requested size=%d real size=%d",
2273                                         slap_listeners[l]->sl_url.bv_val, l, origsize, size, realsize );
2274                                 Debug( LDAP_DEBUG_ANY,
2275                                         "slapd_daemon_task: %s\n",
2276                                         buf, 0, 0 );
2277                         }
2278                 }
2279 #endif /* LDAP_TCP_BUFFER */
2280
2281                 if ( listen( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ), SLAPD_LISTEN_BACKLOG ) == -1 ) {
2282                         int err = sock_errno();
2283
2284 #ifdef LDAP_PF_INET6
2285                         /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
2286                          * we are already listening to in6addr_any, then we want to ignore
2287                          * this and continue.
2288                          */
2289                         if ( err == EADDRINUSE ) {
2290                                 int i;
2291                                 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
2292                                 struct sockaddr_in6 sa6;
2293
2294                                 if ( sa.sin_family == AF_INET &&
2295                                      sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
2296                                         for ( i = 0 ; i < l; i++ ) {
2297                                                 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
2298                                                 if ( sa6.sin6_family == AF_INET6 &&
2299                                                      !memcmp( &sa6.sin6_addr, &in6addr_any,
2300                                                                 sizeof(struct in6_addr) ) )
2301                                                 {
2302                                                         break;
2303                                                 }
2304                                         }
2305
2306                                         if ( i < l ) {
2307                                                 /* We are already listening to in6addr_any */
2308                                                 Debug( LDAP_DEBUG_CONNS,
2309                                                         "daemon: Attempt to listen to 0.0.0.0 failed, "
2310                                                         "already listening on ::, assuming IPv4 included\n",
2311                                                         0, 0, 0 );
2312                                                 slapd_close( slap_listeners[l]->sl_sd );
2313                                                 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
2314                                                 continue;
2315                                         }
2316                                 }
2317                         }
2318 #endif /* LDAP_PF_INET6 */
2319                         Debug( LDAP_DEBUG_ANY,
2320                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
2321                                         slap_listeners[l]->sl_url.bv_val, err,
2322                                         sock_errstr(err) );
2323                         return (void*)-1;
2324                 }
2325
2326                 /* make the listening socket non-blocking */
2327                 if ( ber_pvt_socket_set_nonblock( SLAP_FD2SOCK( slap_listeners[l]->sl_sd ), 1 ) < 0 ) {
2328                         Debug( LDAP_DEBUG_ANY, "slapd_daemon_task: "
2329                                 "set nonblocking on a listening socket failed\n",
2330                                 0, 0, 0 );
2331                         slapd_shutdown = 2;
2332                         return (void*)-1;
2333                 }
2334
2335                 slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l], -1 );
2336         }
2337
2338 #ifdef HAVE_NT_SERVICE_MANAGER
2339         if ( started_event != NULL ) {
2340                 ldap_pvt_thread_cond_signal( &started_event );
2341         }
2342 #endif /* HAVE_NT_SERVICE_MANAGER */
2343
2344 loop:
2345
2346         /* initialization complete. Here comes the loop. */
2347
2348         while ( !slapd_shutdown ) {
2349                 ber_socket_t            i;
2350                 int                     ns, nwriters;
2351                 int                     at;
2352                 ber_socket_t            nfds;
2353 #if SLAP_EVENTS_ARE_INDEXED
2354                 ber_socket_t            nrfds, nwfds;
2355 #endif /* SLAP_EVENTS_ARE_INDEXED */
2356 #define SLAPD_EBADF_LIMIT 16
2357
2358                 time_t                  now;
2359
2360                 SLAP_EVENT_DECL;
2361
2362                 struct timeval          tv;
2363                 struct timeval          *tvp;
2364
2365                 struct timeval          cat;
2366                 time_t                  tdelta = 1;
2367                 struct re_s*            rtask;
2368
2369                 now = slap_get_time();
2370
2371                 if ( !tid && ( global_idletimeout > 0 || chk_writetime )) {
2372                         int check = 0;
2373                         /* Set the select timeout.
2374                          * Don't just truncate, preserve the fractions of
2375                          * seconds to prevent sleeping for zero time.
2376                          */
2377                         if ( chk_writetime ) {
2378                                 tv.tv_sec = global_writetimeout;
2379                                 tv.tv_usec = 0;
2380                                 if ( difftime( chk_writetime, now ) < 0 )
2381                                         check = 2;
2382                         } else {
2383                                 tv.tv_sec = global_idletimeout / SLAPD_IDLE_CHECK_LIMIT;
2384                                 tv.tv_usec = global_idletimeout - \
2385                                         ( tv.tv_sec * SLAPD_IDLE_CHECK_LIMIT );
2386                                 tv.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
2387                                 if ( difftime( last_idle_check +
2388                                         global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 )
2389                                         check = 1;
2390                         }
2391                         if ( check ) {
2392                                 connections_timeout_idle( now );
2393                                 last_idle_check = now;
2394                         }
2395                 } else {
2396                         tv.tv_sec = 0;
2397                         tv.tv_usec = 0;
2398                 }
2399
2400 #ifdef SIGHUP
2401                 if ( slapd_gentle_shutdown ) {
2402                         ber_socket_t active;
2403
2404                         if ( !tid && slapd_gentle_shutdown == 1 ) {
2405                                 BackendDB *be;
2406                                 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
2407                                 close_listeners( 1 );
2408                                 frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
2409                                 LDAP_STAILQ_FOREACH(be, &backendDB, be_next) {
2410                                         be->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
2411                                 }
2412                                 slapd_gentle_shutdown = 2;
2413                         }
2414
2415                         ldap_pvt_thread_mutex_lock( &slap_daemon[tid].sd_mutex );
2416                         active = slap_daemon[tid].sd_nactives;
2417                         ldap_pvt_thread_mutex_unlock( &slap_daemon[tid].sd_mutex );
2418
2419                         if ( active == 0 ) {
2420                                 if ( !tid ) {
2421                                         for ( l=1; l<slapd_daemon_threads; l++ ) {
2422                                                 ldap_pvt_thread_mutex_lock( &slap_daemon[l].sd_mutex );
2423                                                 active += slap_daemon[l].sd_nactives;
2424                                                 ldap_pvt_thread_mutex_unlock( &slap_daemon[l].sd_mutex );
2425                                         }
2426                                         if ( !active )
2427                                                 slapd_shutdown = 1;
2428                                 }
2429                                 if ( !active )
2430                                         break;
2431                         }
2432                 }
2433 #endif /* SIGHUP */
2434                 at = 0;
2435
2436                 ldap_pvt_thread_mutex_lock( &slap_daemon[tid].sd_mutex );
2437
2438                 nwriters = slap_daemon[tid].sd_nwriters;
2439
2440                 if ( listening )
2441                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2442                         Listener *lr = slap_listeners[l];
2443
2444                         if ( lr->sl_sd == AC_SOCKET_INVALID ) continue;
2445                         if ( DAEMON_ID( lr->sl_sd ) != tid ) continue;
2446
2447                         if ( lr->sl_mute || lr->sl_busy )
2448                         {
2449                                 SLAP_SOCK_CLR_READ( tid, lr->sl_sd );
2450                         } else {
2451                                 SLAP_SOCK_SET_READ( tid, lr->sl_sd );
2452                         }
2453                 }
2454
2455                 SLAP_EVENT_INIT(tid);
2456
2457                 nfds = SLAP_EVENT_MAX(tid);
2458
2459                 if (( chk_writetime || global_idletimeout ) && slap_daemon[tid].sd_nactives ) at = 1;
2460
2461                 ldap_pvt_thread_mutex_unlock( &slap_daemon[tid].sd_mutex );
2462
2463                 if ( at
2464 #if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
2465                         &&  ( tv.tv_sec || tv.tv_usec )
2466 #endif /* HAVE_YIELDING_SELECT || NO_THREADS */
2467                         )
2468                 {
2469                         tvp = &tv;
2470                 } else {
2471                         tvp = NULL;
2472                 }
2473
2474                 /* Only thread 0 handles runqueue */
2475                 if ( !tid ) {
2476                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
2477                         rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
2478                         while ( rtask && cat.tv_sec && cat.tv_sec <= now ) {
2479                                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
2480                                         ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
2481                                 } else {
2482                                         ldap_pvt_runqueue_runtask( &slapd_rq, rtask );
2483                                         ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
2484                                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
2485                                         ldap_pvt_thread_pool_submit( &connection_pool,
2486                                                 rtask->routine, (void *) rtask );
2487                                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
2488                                 }
2489                                 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
2490                         }
2491                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
2492
2493                         if ( rtask && cat.tv_sec ) {
2494                                 /* NOTE: diff __should__ always be >= 0,
2495                                  * AFAI understand; however (ITS#4872),
2496                                  * time_t might be unsigned in some systems,
2497                                  * while difftime() returns a double */
2498                                 double diff = difftime( cat.tv_sec, now );
2499                                 if ( diff <= 0 ) {
2500                                         diff = tdelta;
2501                                 }
2502                                 if ( tvp == NULL || diff < tv.tv_sec ) {
2503                                         tv.tv_sec = diff;
2504                                         tv.tv_usec = 0;
2505                                         tvp = &tv;
2506                                 }
2507                         }
2508                 }
2509
2510                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2511                         Listener *lr = slap_listeners[l];
2512
2513                         if ( lr->sl_sd == AC_SOCKET_INVALID ) {
2514                                 continue;
2515                         }
2516
2517                         if ( lr->sl_mute ) {
2518                                 Debug( LDAP_DEBUG_CONNS,
2519                                         "daemon: " SLAP_EVENT_FNAME ": "
2520                                         "listen=%d muted\n",
2521                                         lr->sl_sd, 0, 0 );
2522                                 continue;
2523                         }
2524
2525                         if ( lr->sl_busy ) {
2526                                 Debug( LDAP_DEBUG_CONNS,
2527                                         "daemon: " SLAP_EVENT_FNAME ": "
2528                                         "listen=%d busy\n",
2529                                         lr->sl_sd, 0, 0 );
2530                                 continue;
2531                         }
2532
2533                         Debug( LDAP_DEBUG_CONNS,
2534                                 "daemon: " SLAP_EVENT_FNAME ": "
2535                                 "listen=%d active_threads=%d tvp=%s\n",
2536                                 lr->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
2537                 }
2538
2539                 SLAP_EVENT_WAIT( tid, tvp, &ns );
2540                 switch ( ns ) {
2541                 case -1: {      /* failure - try again */
2542                                 int err = sock_errno();
2543
2544                                 if ( err != EINTR ) {
2545                                         ebadf++;
2546
2547                                         /* Don't log unless we got it twice in a row */
2548                                         if ( !( ebadf & 1 ) ) {
2549                                                 Debug( LDAP_DEBUG_ANY,
2550                                                         "daemon: "
2551                                                         SLAP_EVENT_FNAME
2552                                                         " failed count %d "
2553                                                         "err (%d): %s\n",
2554                                                         ebadf, err,
2555                                                         sock_errstr( err ) );
2556                                         }
2557                                         if ( ebadf >= SLAPD_EBADF_LIMIT ) {
2558                                                 slapd_shutdown = 2;
2559                                         }
2560                                 }
2561                         }
2562                         continue;
2563
2564                 case 0:         /* timeout - let threads run */
2565                         ebadf = 0;
2566 #ifndef HAVE_YIELDING_SELECT
2567                         Debug( LDAP_DEBUG_CONNS, "daemon: " SLAP_EVENT_FNAME
2568                                 "timeout - yielding\n",
2569                                 0, 0, 0 );
2570
2571                         ldap_pvt_thread_yield();
2572 #endif /* ! HAVE_YIELDING_SELECT */
2573                         continue;
2574
2575                 default:        /* something happened - deal with it */
2576                         if ( slapd_shutdown ) continue;
2577
2578                         ebadf = 0;
2579                         Debug( LDAP_DEBUG_CONNS,
2580                                 "daemon: activity on %d descriptor%s\n",
2581                                 ns, ns != 1 ? "s" : "", 0 );
2582                         /* FALL THRU */
2583                 }
2584
2585 #if SLAP_EVENTS_ARE_INDEXED
2586                 if ( SLAP_EVENT_IS_READ( wake_sds[tid][0] ) ) {
2587                         char c[BUFSIZ];
2588                         SLAP_EVENT_CLR_READ( wake_sds[tid][0] );
2589                         waking = 0;
2590                         tcp_read( SLAP_FD2SOCK(wake_sds[tid][0]), c, sizeof(c) );
2591                         Debug( LDAP_DEBUG_CONNS, "daemon: waked\n", 0, 0, 0 );
2592                         continue;
2593                 }
2594
2595                 /* The event slot equals the descriptor number - this is
2596                  * true for Unix select and poll. We treat Windows select
2597                  * like this too, even though it's a kludge.
2598                  */
2599                 if ( listening )
2600                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2601                         int rc;
2602
2603                         if ( ns <= 0 ) break;
2604                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue;
2605 #ifdef LDAP_CONNECTIONLESS
2606                         if ( slap_listeners[l]->sl_is_udp ) continue;
2607 #endif /* LDAP_CONNECTIONLESS */
2608                         if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd ) ) continue;
2609
2610                         /* clear events */
2611                         SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
2612                         SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
2613                         ns--;
2614
2615                         rc = slap_listener_activate( slap_listeners[l] );
2616                 }
2617
2618                 /* bypass the following tests if no descriptors left */
2619                 if ( ns <= 0 ) {
2620 #ifndef HAVE_YIELDING_SELECT
2621                         ldap_pvt_thread_yield();
2622 #endif /* HAVE_YIELDING_SELECT */
2623                         continue;
2624                 }
2625
2626                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
2627                 nrfds = 0;
2628                 nwfds = 0;
2629                 for ( i = 0; i < nfds; i++ ) {
2630                         int     r, w;
2631
2632                         r = SLAP_EVENT_IS_READ( i );
2633                         /* writefds was not initialized if nwriters was zero */
2634                         w = nwriters ? SLAP_EVENT_IS_WRITE( i ) : 0;
2635                         if ( r || w ) {
2636                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
2637                                     r ? "r" : "", w ? "w" : "" );
2638                                 if ( r ) {
2639                                         nrfds++;
2640                                         ns--;
2641                                 }
2642                                 if ( w ) {
2643                                         nwfds++;
2644                                         ns--;
2645                                 }
2646                         }
2647                         if ( ns <= 0 ) break;
2648                 }
2649                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2650
2651                 /* loop through the writers */
2652                 for ( i = 0; nwfds > 0; i++ ) {
2653                         ber_socket_t wd;
2654                         if ( ! SLAP_EVENT_IS_WRITE( i ) ) continue;
2655                         wd = i;
2656
2657                         SLAP_EVENT_CLR_WRITE( wd );
2658                         nwfds--;
2659
2660                         Debug( LDAP_DEBUG_CONNS,
2661                                 "daemon: write active on %d\n",
2662                                 wd, 0, 0 );
2663
2664                         /*
2665                          * NOTE: it is possible that the connection was closed
2666                          * and that the stream is now inactive.
2667                          * connection_write() must validate the stream is still
2668                          * active.
2669                          *
2670                          * ITS#4338: if the stream is invalid, there is no need to
2671                          * close it here. It has already been closed in connection.c.
2672                          */
2673                         if ( connection_write( wd ) < 0 ) {
2674                                 if ( SLAP_EVENT_IS_READ( wd ) ) {
2675                                         SLAP_EVENT_CLR_READ( (unsigned) wd );
2676                                         nrfds--;
2677                                 }
2678                         }
2679                 }
2680
2681                 for ( i = 0; nrfds > 0; i++ ) {
2682                         ber_socket_t rd;
2683                         if ( ! SLAP_EVENT_IS_READ( i ) ) continue;
2684                         rd = i;
2685                         SLAP_EVENT_CLR_READ( rd );
2686                         nrfds--;
2687
2688                         Debug ( LDAP_DEBUG_CONNS,
2689                                 "daemon: read activity on %d\n", rd, 0, 0 );
2690                         /*
2691                          * NOTE: it is possible that the connection was closed
2692                          * and that the stream is now inactive.
2693                          * connection_read() must valid the stream is still
2694                          * active.
2695                          */
2696
2697                         connection_read_activate( rd );
2698                 }
2699 #else   /* !SLAP_EVENTS_ARE_INDEXED */
2700         /* FIXME */
2701         /* The events are returned in an arbitrary list. This is true
2702          * for /dev/poll, epoll and kqueue. In order to prioritize things
2703          * so that we can handle wake_sds first, listeners second, and then
2704          * all other connections last (as we do for select), we would need
2705          * to use multiple event handles and cascade them.
2706          *
2707          * That seems like a bit of hassle. So the wake_sds check has been
2708          * skipped. For epoll and kqueue we can associate arbitrary data with
2709          * an event, so we could use pointers to the listener structure
2710          * instead of just the file descriptor. For /dev/poll we have to
2711          * search the listeners array for a matching descriptor.
2712          *
2713          * We now handle wake events when we see them; they are not given
2714          * higher priority.
2715          */
2716 #ifdef LDAP_DEBUG
2717                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
2718
2719                 for ( i = 0; i < ns; i++ ) {
2720                         int     r, w, fd;
2721
2722                         /* Don't log listener events */
2723                         if ( SLAP_EVENT_IS_LISTENER( tid, i )
2724 #ifdef LDAP_CONNECTIONLESS
2725                                 && !( (SLAP_EVENT_LISTENER( tid, i ))->sl_is_udp )
2726 #endif /* LDAP_CONNECTIONLESS */
2727                                 )
2728                         {
2729                                 continue;
2730                         }
2731
2732                         fd = SLAP_EVENT_FD( tid, i );
2733                         /* Don't log internal wake events */
2734                         if ( fd == wake_sds[tid][0] ) continue;
2735
2736                         r = SLAP_EVENT_IS_READ( i );
2737                         w = SLAP_EVENT_IS_WRITE( i );
2738                         if ( r || w ) {
2739                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", fd,
2740                                     r ? "r" : "", w ? "w" : "" );
2741                         }
2742                 }
2743                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
2744 #endif /* LDAP_DEBUG */
2745
2746                 for ( i = 0; i < ns; i++ ) {
2747                         int rc = 1, fd, w = 0, r = 0;
2748
2749                         if ( SLAP_EVENT_IS_LISTENER( tid, i ) ) {
2750                                 rc = slap_listener_activate( SLAP_EVENT_LISTENER( tid, i ) );
2751                         }
2752
2753                         /* If we found a regular listener, rc is now zero, and we
2754                          * can skip the data portion. But if it was a UDP listener
2755                          * then rc is still 1, and we want to handle the data.
2756                          */
2757                         if ( rc ) {
2758                                 fd = SLAP_EVENT_FD( tid, i );
2759
2760                                 /* Handle wake events */
2761                                 if ( fd == wake_sds[tid][0] ) {
2762                                         char c[BUFSIZ];
2763                                         waking = 0;
2764                                         tcp_read( SLAP_FD2SOCK(wake_sds[tid][0]), c, sizeof(c) );
2765                                         continue;
2766                                 }
2767
2768                                 if ( SLAP_EVENT_IS_WRITE( i ) ) {
2769                                         Debug( LDAP_DEBUG_CONNS,
2770                                                 "daemon: write active on %d\n",
2771                                                 fd, 0, 0 );
2772
2773                                         SLAP_EVENT_CLR_WRITE( i );
2774                                         w = 1;
2775
2776                                         /*
2777                                          * NOTE: it is possible that the connection was closed
2778                                          * and that the stream is now inactive.
2779                                          * connection_write() must valid the stream is still
2780                                          * active.
2781                                          */
2782                                         if ( connection_write( fd ) < 0 ) {
2783                                                 continue;
2784                                         }
2785                                 }
2786                                 /* If event is a read */
2787                                 if ( SLAP_EVENT_IS_READ( i )) {
2788                                         r = 1;
2789                                         Debug( LDAP_DEBUG_CONNS,
2790                                                 "daemon: read active on %d\n",
2791                                                 fd, 0, 0 );
2792
2793                                         SLAP_EVENT_CLR_READ( i );
2794                                         connection_read_activate( fd );
2795                                 } else if ( !w ) {
2796 #ifdef HAVE_EPOLL
2797                                         /* Don't keep reporting the hangup
2798                                          */
2799                                         if ( SLAP_SOCK_IS_ACTIVE( tid, fd )) {
2800                                                 SLAP_EPOLL_SOCK_SET( tid, fd, EPOLLET );
2801                                         }
2802 #endif
2803                                 }
2804                         }
2805                 }
2806 #endif  /* SLAP_EVENTS_ARE_INDEXED */
2807
2808 #ifndef HAVE_YIELDING_SELECT
2809                 ldap_pvt_thread_yield();
2810 #endif /* ! HAVE_YIELDING_SELECT */
2811         }
2812
2813         /* Only thread 0 handles shutdown */
2814         if ( tid )
2815                 return NULL;
2816
2817         if ( slapd_shutdown == 1 ) {
2818                 Debug( LDAP_DEBUG_ANY,
2819                         "daemon: shutdown requested and initiated.\n",
2820                         0, 0, 0 );
2821
2822         } else if ( slapd_shutdown == 2 ) {
2823 #ifdef HAVE_NT_SERVICE_MANAGER
2824                         Debug( LDAP_DEBUG_ANY,
2825                                "daemon: shutdown initiated by Service Manager.\n",
2826                                0, 0, 0);
2827 #else /* !HAVE_NT_SERVICE_MANAGER */
2828                         Debug( LDAP_DEBUG_ANY,
2829                                "daemon: abnormal condition, shutdown initiated.\n",
2830                                0, 0, 0 );
2831 #endif /* !HAVE_NT_SERVICE_MANAGER */
2832         } else {
2833                 Debug( LDAP_DEBUG_ANY,
2834                        "daemon: no active streams, shutdown initiated.\n",
2835                        0, 0, 0 );
2836         }
2837
2838         close_listeners( 0 );
2839
2840         if ( !slapd_gentle_shutdown ) {
2841                 slapd_abrupt_shutdown = 1;
2842                 connections_shutdown();
2843         }
2844
2845         if ( LogTest( LDAP_DEBUG_ANY )) {
2846                 int t = ldap_pvt_thread_pool_backload( &connection_pool );
2847                 Debug( LDAP_DEBUG_ANY,
2848                         "slapd shutdown: waiting for %d operations/tasks to finish\n",
2849                         t, 0, 0 );
2850         }
2851         ldap_pvt_thread_pool_destroy( &connection_pool, 1 );
2852
2853         return NULL;
2854 }
2855
2856
2857 #ifdef LDAP_CONNECTIONLESS
2858 static int
2859 connectionless_init( void )
2860 {
2861         int l;
2862
2863         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
2864                 Listener *lr = slap_listeners[l];
2865                 Connection *c;
2866
2867                 if ( !lr->sl_is_udp ) {
2868                         continue;
2869                 }
2870
2871                 c = connection_init( lr->sl_sd, lr, "", "",
2872                         CONN_IS_UDP, (slap_ssf_t) 0, NULL
2873                         LDAP_PF_LOCAL_SENDMSG_ARG(NULL));
2874
2875                 if ( !c ) {
2876                         Debug( LDAP_DEBUG_TRACE,
2877                                 "connectionless_init: failed on %s (%d)\n",
2878                                 lr->sl_url.bv_val, lr->sl_sd, 0 );
2879                         return -1;
2880                 }
2881                 lr->sl_is_udp++;
2882         }
2883
2884         return 0;
2885 }
2886 #endif /* LDAP_CONNECTIONLESS */
2887
2888 int
2889 slapd_daemon( void )
2890 {
2891         int i, rc;
2892
2893 #ifdef LDAP_CONNECTIONLESS
2894         connectionless_init();
2895 #endif /* LDAP_CONNECTIONLESS */
2896
2897         if ( slapd_daemon_threads > SLAPD_MAX_DAEMON_THREADS )
2898                 slapd_daemon_threads = SLAPD_MAX_DAEMON_THREADS;
2899
2900         listener_tid = ch_malloc(slapd_daemon_threads * sizeof(ldap_pvt_thread_t));
2901
2902         /* daemon_init only inits element 0 */
2903         for ( i=1; i<slapd_daemon_threads; i++ )
2904         {
2905                 ldap_pvt_thread_mutex_init( &slap_daemon[i].sd_mutex );
2906
2907                 if( (rc = lutil_pair( wake_sds[i] )) < 0 ) {
2908                         Debug( LDAP_DEBUG_ANY,
2909                                 "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
2910                         return rc;
2911                 }
2912                 ber_pvt_socket_set_nonblock( wake_sds[i][1], 1 );
2913
2914                 SLAP_SOCK_INIT(i);
2915         }
2916
2917         for ( i=0; i<slapd_daemon_threads; i++ )
2918         {
2919                 /* listener as a separate THREAD */
2920                 rc = ldap_pvt_thread_create( &listener_tid[i],
2921                         0, slapd_daemon_task, &listener_tid[i] );
2922
2923                 if ( rc != 0 ) {
2924                         Debug( LDAP_DEBUG_ANY,
2925                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2926                         return rc;
2927                 }
2928         }
2929
2930         /* wait for the listener threads to complete */
2931         for ( i=0; i<slapd_daemon_threads; i++ )
2932                 ldap_pvt_thread_join( listener_tid[i], (void *)NULL );
2933
2934         destroy_listeners();
2935         ch_free( listener_tid );
2936         listener_tid = NULL;
2937
2938         return 0;
2939 }
2940
2941 static int
2942 sockinit( void )
2943 {
2944 #if defined( HAVE_WINSOCK2 )
2945         WORD wVersionRequested;
2946         WSADATA wsaData;
2947         int err;
2948
2949         wVersionRequested = MAKEWORD( 2, 0 );
2950
2951         err = WSAStartup( wVersionRequested, &wsaData );
2952         if ( err != 0 ) {
2953                 /* Tell the user that we couldn't find a usable */
2954                 /* WinSock DLL.                                  */
2955                 return -1;
2956         }
2957
2958         /* Confirm that the WinSock DLL supports 2.0.*/
2959         /* Note that if the DLL supports versions greater    */
2960         /* than 2.0 in addition to 2.0, it will still return */
2961         /* 2.0 in wVersion since that is the version we      */
2962         /* requested.                                        */
2963
2964         if ( LOBYTE( wsaData.wVersion ) != 2 ||
2965                 HIBYTE( wsaData.wVersion ) != 0 )
2966         {
2967             /* Tell the user that we couldn't find a usable */
2968             /* WinSock DLL.                                  */
2969             WSACleanup();
2970             return -1;
2971         }
2972
2973         /* The WinSock DLL is acceptable. Proceed. */
2974 #elif defined( HAVE_WINSOCK )
2975         WSADATA wsaData;
2976         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) return -1;
2977 #endif /* ! HAVE_WINSOCK2 && ! HAVE_WINSOCK */
2978
2979         return 0;
2980 }
2981
2982 static int
2983 sockdestroy( void )
2984 {
2985 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2986         WSACleanup();
2987 #endif /* HAVE_WINSOCK2 || HAVE_WINSOCK */
2988
2989         return 0;
2990 }
2991
2992 RETSIGTYPE
2993 slap_sig_shutdown( int sig )
2994 {
2995         int save_errno = errno;
2996         int i;
2997
2998 #if 0
2999         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
3000 #endif
3001
3002         /*
3003          * If the NT Service Manager is controlling the server, we don't
3004          * want SIGBREAK to kill the server. For some strange reason,
3005          * SIGBREAK is generated when a user logs out.
3006          */
3007
3008 #if defined(HAVE_NT_SERVICE_MANAGER) && defined(SIGBREAK)
3009         if (is_NT_Service && sig == SIGBREAK) {
3010                 /* empty */;
3011         } else
3012 #endif /* HAVE_NT_SERVICE_MANAGER && SIGBREAK */
3013 #ifdef SIGHUP
3014         if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0) {
3015                 slapd_gentle_shutdown = 1;
3016         } else
3017 #endif /* SIGHUP */
3018         {
3019                 slapd_shutdown = 1;
3020         }
3021
3022         for (i=0; i<slapd_daemon_threads; i++) {
3023                 WAKE_LISTENER(i,1);
3024         }
3025
3026         /* reinstall self */
3027         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
3028
3029         errno = save_errno;
3030 }
3031
3032 RETSIGTYPE
3033 slap_sig_wake( int sig )
3034 {
3035         int save_errno = errno;
3036
3037         WAKE_LISTENER(0,1);
3038
3039         /* reinstall self */
3040         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
3041
3042         errno = save_errno;
3043 }
3044
3045
3046 void
3047 slapd_add_internal( ber_socket_t s, int isactive )
3048 {
3049         slapd_add( s, isactive, NULL, -1 );
3050 }
3051
3052 Listener **
3053 slapd_get_listeners( void )
3054 {
3055         /* Could return array with no listeners if !listening, but current
3056          * callers mostly look at the URLs.  E.g. syncrepl uses this to
3057          * identify the server, which means it wants the startup arguments.
3058          */
3059         return slap_listeners;
3060 }
3061
3062 /* Reject all incoming requests */
3063 void
3064 slap_suspend_listeners( void )
3065 {
3066         int i;
3067         for (i=0; slap_listeners[i]; i++) {
3068                 slap_listeners[i]->sl_mute = 1;
3069                 listen( slap_listeners[i]->sl_sd, 0 );
3070         }
3071 }
3072
3073 /* Resume after a suspend */
3074 void
3075 slap_resume_listeners( void )
3076 {
3077         int i;
3078         for (i=0; slap_listeners[i]; i++) {
3079                 slap_listeners[i]->sl_mute = 0;
3080                 listen( slap_listeners[i]->sl_sd, SLAPD_LISTEN_BACKLOG );
3081         }
3082 }
3083
3084 void
3085 slap_wake_listener()
3086 {
3087         WAKE_LISTENER(0,1);
3088 }