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 1998-2004 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms are permitted
  19  * provided that this notice is preserved and that due credit is given
  20  * to the University of Michigan at Ann Arbor. The name of the University
  21  * may not be used to endorse or promote products derived from this
  22  * software without specific prior written permission. This software
  23  * is provided ``as is'' without express or implied warranty.
  24  */
  25
  26 #include "portable.h"
  27
  28 #include <stdio.h>
  29
  30 #include <ac/ctype.h>
  31 #include <ac/errno.h>
  32 #include <ac/socket.h>
  33 #include <ac/string.h>
  34 #include <ac/time.h>
  35 #include <ac/unistd.h>
  36
  37 #include "slap.h"
  38 #include "ldap_pvt_thread.h"
  39 #include "lutil.h"
  40
  41 #include "ldap_rq.h"
  42
  43 #ifdef HAVE_EPOLL
  44 #include <sys/epoll.h>
  45 #endif
  46
  47 #ifdef HAVE_TCPD
  48 #include <tcpd.h>
  49 #define SLAP_STRING_UNKNOWN     STRING_UNKNOWN
  50
  51 int allow_severity = LOG_INFO;
  52 int deny_severity = LOG_NOTICE;
  53 #else /* ! TCP Wrappers */
  54 #define SLAP_STRING_UNKNOWN     "unknown"
  55 #endif /* ! TCP Wrappers */
  56
  57 #ifdef LDAP_PF_LOCAL
  58 #include <sys/stat.h>
  59 /* this should go in <ldap.h> as soon as it is accepted */
  60 #define LDAPI_MOD_URLEXT                "x-mod"
  61 #endif /* LDAP_PF_LOCAL */
  62
  63 #ifdef LDAP_PF_INET6
  64 int slap_inet4or6 = AF_UNSPEC;
  65 #else
  66 int slap_inet4or6 = AF_INET;
  67 #endif
  68
  69 /* globals */
  70 time_t starttime;
  71 ber_socket_t dtblsize;
  72 slap_ssf_t local_ssf = LDAP_PVT_SASL_LOCAL_SSF;
  73
  74 Listener **slap_listeners = NULL;
  75
  76 #define SLAPD_LISTEN 10
  77
  78 static ber_socket_t wake_sds[2];
  79 static int emfile;
  80
  81 static int waking;
  82 #define WAKE_LISTENER(w) \
  83 do { if (w && waking < 5) { tcp_write( wake_sds[1], "0", 1 ); waking++;} } while(0)
  84
  85 volatile sig_atomic_t slapd_shutdown = 0, slapd_gentle_shutdown = 0;
  86 volatile sig_atomic_t slapd_abrupt_shutdown = 0;
  87
  88 static struct slap_daemon {
  89         ldap_pvt_thread_mutex_t sd_mutex;
  90
  91         ber_socket_t sd_nactives;
  92         int sd_nwriters;
  93
  94 #ifdef HAVE_EPOLL
  95         struct epoll_event *sd_epolls;
  96         int     sd_nepolls;
  97         int     *sd_index;
  98         int     sd_epfd;
  99         int     sd_nfds;
 100 #else
 101
 102 #ifndef HAVE_WINSOCK
 103         /* In winsock, accept() returns values higher than dtblsize
 104                 so don't bother with this optimization */
 105         int sd_nfds;
 106 #endif
 107
 108         fd_set sd_actives;
 109         fd_set sd_readers;
 110         fd_set sd_writers;
 111 #endif
 112 } slap_daemon;
 113
 114 #ifdef HAVE_EPOLL
 115 #define SLAP_EVENTS_ARE_INDEXED 0
 116 #define SLAP_SOCK_IX(s) (slap_daemon.sd_index[s])
 117 #define SLAP_SOCK_EP(s) (slap_daemon.sd_epolls[SLAP_SOCK_IX(s)])
 118 #define SLAP_SOCK_EV(s) (SLAP_SOCK_EP(s).events)
 119 #define SLAP_SOCK_IS_ACTIVE(s)  (SLAP_SOCK_IX(s) != -1)
 120 #define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_SOCK_IX(s) == -1)
 121 #define SLAP_SOCK_IS_SET(s, mode)       (SLAP_SOCK_EV(s) & mode)
 122
 123 #define SLAP_SOCK_IS_READ(s)    SLAP_SOCK_IS_SET(s, EPOLLIN)
 124 #define SLAP_SOCK_IS_WRITE(s)   SLAP_SOCK_IS_SET(s, EPOLLOUT)
 125
 126 #define SLAP_SET_SOCK(s, mode) do { \
 127         if ((SLAP_SOCK_EV(s) & mode) != mode) { \
 128                 SLAP_SOCK_EV(s) |= mode;        \
 129                 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, s,        \
 130                         &SLAP_SOCK_EP(s));      \
 131         }       \
 132 } while(0)
 133
 134 #define SLAP_CLR_SOCK(s, mode) do { \
 135         if ((SLAP_SOCK_EV(s) & mode)) { \
 136                 SLAP_SOCK_EV(s) &= ~mode;       \
 137                 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, s,        \
 138                         &SLAP_SOCK_EP(s));      \
 139         }       \
 140 } while(0)      \
 141
 142 #define SLAP_SOCK_SET_READ(s)   SLAP_SET_SOCK(s, EPOLLIN)
 143 #define SLAP_SOCK_SET_WRITE(s)  SLAP_SET_SOCK(s, EPOLLOUT)
 144
 145 #define SLAP_SOCK_CLR_READ(s)   SLAP_CLR_SOCK(s, EPOLLIN)
 146 #define SLAP_SOCK_CLR_WRITE(s)  SLAP_CLR_SOCK(s, EPOLLOUT)
 147
 148 #define SLAP_CLR_EVENT(i, mode) (revents[i].events &= ~mode)
 149
 150
 151 #define SLAP_EVENT_MAX  slap_daemon.sd_nfds
 152
 153 /* If a Listener address is provided, store that as the epoll data.
 154  * Otherwise, store the address of this socket's slot in the
 155  * index array.
 156  */
 157 #define SLAP_ADD_SOCK(s, l) do { \
 158         int rc; \
 159         SLAP_SOCK_IX(s) = slap_daemon.sd_nfds;  \
 160         SLAP_SOCK_EP(s).data.ptr = (l) ? (l) : (void *)(&SLAP_SOCK_IX(s)); \
 161         SLAP_SOCK_EV(s) = EPOLLIN;      \
 162         rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_ADD, s,   \
 163                         &SLAP_SOCK_EP(s));      \
 164         if ( rc == 0 ) slap_daemon.sd_nfds++;   \
 165 } while(0)
 166
 167 #define SLAP_EV_LISTENER(ptr) (((int *)(ptr) >= slap_daemon.sd_index && \
 168          (int *)(ptr) <= (slap_daemon.sd_index+dtblsize)) ? 0 : 1)
 169
 170 #define SLAP_EV_PTRFD(ptr) (SLAP_EV_LISTENER(ptr) ? \
 171          ((Listener *)ptr)->sl_sd : (int *)(ptr) - slap_daemon.sd_index)
 172
 173 #define SLAP_DEL_SOCK(s) do { \
 174         int fd, rc, index = SLAP_SOCK_IX(s); \
 175         rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_DEL, s,   \
 176                         &SLAP_SOCK_EP(s));      \
 177         slap_daemon.sd_epolls[index] = slap_daemon.sd_epolls[slap_daemon.sd_nfds-1];    \
 178         fd = SLAP_EV_PTRFD(slap_daemon.sd_epolls[index].data.ptr);      \
 179         slap_daemon.sd_index[fd] = index;       \
 180         slap_daemon.sd_index[s] = -1;   \
 181         slap_daemon.sd_nfds--;  \
 182 } while(0)
 183
 184 #define SLAP_EVENT_CLR_READ(i)  SLAP_CLR_EVENT(i, EPOLLIN)
 185 #define SLAP_EVENT_CLR_WRITE(i) SLAP_CLR_EVENT(i, EPOLLOUT)
 186
 187 #define SLAP_CHK_EVENT(i, mode) (revents[i].events & mode)
 188
 189 #define SLAP_EVENT_IS_READ(i)   SLAP_CHK_EVENT(i, EPOLLIN)
 190 #define SLAP_EVENT_IS_WRITE(i)  SLAP_CHK_EVENT(i, EPOLLOUT)
 191 #define SLAP_EVENT_IS_LISTENER(i)       SLAP_EV_LISTENER(revents[i].data.ptr)
 192 #define SLAP_EVENT_LISTENER(i)  (revents[i].data.ptr)
 193
 194 #define SLAP_EVENT_FD(i)        SLAP_EV_PTRFD(revents[i].data.ptr)
 195 #define SLAP_SOCK_SET_MUTE(s)   SLAP_SOCK_CLR_READ(s)
 196 #define SLAP_SOCK_CLR_MUTE(s)   SLAP_SOCK_SET_READ(s)
 197 #define SLAP_SOCK_IS_MUTE(s)    !SLAP_SOCK_IS_READ(s)
 198
 199 #define SLAP_SOCK_SET_INIT      \
 200         slap_daemon.sd_epolls = ch_malloc(sizeof(struct epoll_event) * dtblsize * 2);   \
 201         slap_daemon.sd_index = ch_malloc(sizeof(int) * dtblsize);       \
 202         slap_daemon.sd_epfd = epoll_create( dtblsize ); \
 203         for (i=0; i<dtblsize; i++) slap_daemon.sd_index[i] = -1
 204
 205
 206 #define SLAP_EVENT_DECL \
 207         struct epoll_event *revents
 208
 209 #define SLAP_EVENT_INIT \
 210         revents = slap_daemon.sd_epolls + dtblsize;     \
 211
 212 #define SLAP_EVENT_WAIT(tvp)    \
 213         epoll_wait( slap_daemon.sd_epfd, revents, dtblsize, tvp ? tvp->tv_sec * 1000 : -1 )
 214
 215 #else
 216
 217 /* select */
 218 #define SLAP_EVENTS_ARE_INDEXED 1
 219 #define SLAP_EVENT_DECL \
 220         fd_set readfds, writefds
 221
 222 #define SLAP_EVENT_INIT \
 223         AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) ); \
 224         if ( nwriters ) \
 225                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
 226
 227 #ifdef FD_SETSIZE
 228 #define CHK_SETSIZE     \
 229         if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE
 230 #else
 231 #define CHK_SETSIZE
 232 #endif
 233
 234 #define SLAP_SOCK_SET_INIT      \
 235         CHK_SETSIZE;    \
 236         FD_ZERO(&slap_daemon.sd_readers);       \
 237         FD_ZERO(&slap_daemon.sd_writers)
 238
 239 #define SLAP_SOCK_IS_ACTIVE(fd) FD_ISSET(fd, &slap_daemon.sd_actives)
 240
 241 #define SLAP_SOCK_IS_READ(fd)   FD_ISSET(fd, &slap_daemon.sd_readers)
 242 #define SLAP_SOCK_IS_WRITE(fd)  FD_ISSET(fd, &slap_daemon.sd_writers)
 243
 244 #define SLAP_SOCK_NOT_ACTIVE(fd)        (!SLAP_SOCK_IS_ACTIVE(fd) && \
 245          !SLAP_SOCK_IS_READ(fd) && !SLAP_SOCK_IS_WRITE(fd))
 246
 247 #ifdef HAVE_WINSOCK
 248 #define SLAP_SOCK_SET_READ(fd)  do { \
 249         if (!SLAP_SOCK_IS_READ(fd)) {FD_SET(fd, &slap_daemon.sd_readers);}      \
 250 } while(0)
 251 #define SLAP_SOCK_SET_WRITE(fd) do { \
 252         if (!SLAP_SOCK_IS_WRITE(fd)) {FD_SET(fd, &slap_daemon.sd_writers);}     \
 253 } while(0)
 254
 255 #define SLAP_ADDTEST(s)
 256 #define SLAP_EVENT_MAX  dtblsize
 257 #else
 258 #define SLAP_SOCK_SET_READ(fd)  FD_SET(fd, &slap_daemon.sd_readers)
 259 #define SLAP_SOCK_SET_WRITE(fd) FD_SET(fd, &slap_daemon.sd_writers)
 260
 261 #define SLAP_EVENT_MAX  slap_daemon.sd_nfds
 262 #define SLAP_ADDTEST(s) if (s >= slap_daemon.sd_nfds) slap_daemon.sd_nfds = s+1
 263 #endif
 264
 265 #define SLAP_SOCK_CLR_READ(fd)  FD_CLR(fd, &slap_daemon.sd_readers)
 266 #define SLAP_SOCK_CLR_WRITE(fd) FD_CLR(fd, &slap_daemon.sd_writers)
 267
 268 #define SLAP_ADD_SOCK(s, l) do {        \
 269         SLAP_ADDTEST(s);        \
 270         FD_SET(s, &slap_daemon.sd_actives);     \
 271         FD_SET(s, &slap_daemon.sd_readers);     \
 272 } while(0)
 273
 274 #define SLAP_DEL_SOCK(s) do {   \
 275         FD_CLR(s, &slap_daemon.sd_actives);     \
 276         FD_CLR(s, &slap_daemon.sd_readers);     \
 277         FD_CLR(s, &slap_daemon.sd_writers);     \
 278 } while(0)
 279
 280 #define SLAP_EVENT_IS_READ(fd)  FD_ISSET(fd, &readfds)
 281 #define SLAP_EVENT_IS_WRITE(fd) FD_ISSET(fd, &writefds)
 282
 283 #define SLAP_EVENT_CLR_READ(fd) FD_CLR(fd, &readfds)
 284 #define SLAP_EVENT_CLR_WRITE(fd)        FD_CLR(fd, &writefds)
 285
 286 #define SLAP_EVENT_WAIT(tvp)    \
 287         select( SLAP_EVENT_MAX, &readfds,       \
 288                 nwriters > 0 ? &writefds : NULL, NULL, tvp )
 289
 290 #define SLAP_SOCK_SET_MUTE(s)   FD_CLR(s, &readfds)
 291 #define SLAP_SOCK_CLR_MUTE(s)   FD_SET(s, &readfds)
 292 #define SLAP_SOCK_IS_MUTE(s)    FD_ISSET(s, &readfds)
 293
 294 #endif
 295
 296
 297 #ifdef HAVE_SLP
 298 /*
 299  * SLP related functions
 300  */
 301 #include <slp.h>
 302
 303 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
 304 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
 305 static char** slapd_srvurls = NULL;
 306 static SLPHandle slapd_hslp = 0;
 307 int slapd_register_slp = 0;
 308
 309 void slapd_slp_init( const char* urls ) {
 310         int i;
 311
 312         slapd_srvurls = ldap_str2charray( urls, " " );
 313
 314         if( slapd_srvurls == NULL ) return;
 315
 316         /* find and expand INADDR_ANY URLs */
 317         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 318                 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
 319                         char *host = ldap_pvt_get_fqdn( NULL );
 320                         if ( host != NULL ) {
 321                                 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 322                                         strlen( host ) +
 323                                         sizeof( LDAP_SRVTYPE_PREFIX ) );
 324                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 325                                         LDAP_SRVTYPE_PREFIX ), host );
 326
 327                                 ch_free( host );
 328                         }
 329
 330                 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
 331                         char *host = ldap_pvt_get_fqdn( NULL );
 332                         if ( host != NULL ) {
 333                                 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 334                                         strlen( host ) +
 335                                         sizeof( LDAPS_SRVTYPE_PREFIX ) );
 336                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 337                                         LDAPS_SRVTYPE_PREFIX ), host );
 338
 339                                 ch_free( host );
 340                         }
 341                 }
 342         }
 343
 344         /* open the SLP handle */
 345         SLPOpen( "en", 0, &slapd_hslp );
 346 }
 347
 348 void slapd_slp_deinit() {
 349         if( slapd_srvurls == NULL ) return;
 350
 351         ldap_charray_free( slapd_srvurls );
 352         slapd_srvurls = NULL;
 353
 354         /* close the SLP handle */
 355         SLPClose( slapd_hslp );
 356 }
 357
 358 void slapd_slp_regreport(
 359         SLPHandle hslp,
 360         SLPError errcode,
 361         void* cookie )
 362 {
 363         /* empty report */
 364 }
 365
 366 void slapd_slp_reg() {
 367         int i;
 368
 369         if( slapd_srvurls == NULL ) return;
 370
 371         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 372                 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
 373                                 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
 374                     strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
 375                                 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
 376                 {
 377                         SLPReg( slapd_hslp,
 378                                 slapd_srvurls[i],
 379                                 SLP_LIFETIME_MAXIMUM,
 380                                 "ldap",
 381                                 "",
 382                                 1,
 383                                 slapd_slp_regreport,
 384                                 NULL );
 385                 }
 386         }
 387 }
 388
 389 void slapd_slp_dereg() {
 390         int i;
 391
 392         if( slapd_srvurls == NULL ) return;
 393
 394         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 395                 SLPDereg( slapd_hslp,
 396                         slapd_srvurls[i],
 397                         slapd_slp_regreport,
 398                         NULL );
 399         }
 400 }
 401 #endif /* HAVE_SLP */
 402
 403 /*
 404  * Add a descriptor to daemon control
 405  *
 406  * If isactive, the descriptor is a live server session and is subject
 407  * to idletimeout control. Otherwise, the descriptor is a passive
 408  * listener or an outbound client session, and not subject to
 409  * idletimeout. The underlying event handler may record the Listener
 410  * argument to differentiate Listener's from real sessions.
 411  */
 412 static void slapd_add(ber_socket_t s, int isactive, Listener *sl) {
 413         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 414
 415         assert( SLAP_SOCK_NOT_ACTIVE(s) );
 416
 417         if ( isactive ) {
 418                 slap_daemon.sd_nactives++;
 419         }
 420
 421         SLAP_ADD_SOCK(s, sl);
 422
 423         Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr\n",
 424                 (long) s, 0, 0 );
 425         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 426 }
 427
 428 /*
 429  * Remove the descriptor from daemon control
 430  */
 431 void slapd_remove(ber_socket_t s, int wasactive, int wake) {
 432         int waswriter;
 433         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 434
 435         if ( wasactive ) {
 436                 slap_daemon.sd_nactives--;
 437         }
 438         waswriter = SLAP_SOCK_IS_WRITE(s);
 439
 440         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 441                 (long) s, SLAP_SOCK_IS_READ(s) ? "r" : "",
 442                 waswriter ? "w" : "" );
 443         if ( waswriter ) slap_daemon.sd_nwriters--;
 444
 445         SLAP_DEL_SOCK(s);
 446
 447         /* If we ran out of file descriptors, we dropped a listener from
 448          * the select() loop. Now that we're removing a session from our
 449          * control, we can try to resume a dropped listener to use.
 450          */
 451         if ( emfile ) {
 452                 int i;
 453                 for ( i = 0; slap_listeners[i] != NULL; i++ ) {
 454                         if ( slap_listeners[i]->sl_sd != AC_SOCKET_INVALID ) {
 455                                 if ( slap_listeners[i]->sl_sd == s ) continue;
 456                                 if ( slap_listeners[i]->sl_is_mute ) {
 457                                         slap_listeners[i]->sl_is_mute = 0;
 458                                         emfile--;
 459                                         break;
 460                                 }
 461                         }
 462                 }
 463                 /* Walked the entire list without enabling anything; emfile
 464                  * counter is stale. Reset it.
 465                  */
 466                 if ( slap_listeners[i] == NULL )
 467                         emfile = 0;
 468         }
 469         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 470         WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
 471 }
 472
 473 void slapd_clr_write(ber_socket_t s, int wake) {
 474         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 475
 476         assert( SLAP_SOCK_IS_ACTIVE( s ));
 477         if ( SLAP_SOCK_IS_WRITE( s )) {
 478                 SLAP_SOCK_CLR_WRITE( s );
 479                 slap_daemon.sd_nwriters--;
 480         }
 481
 482         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 483         WAKE_LISTENER(wake);
 484 }
 485
 486 void slapd_set_write(ber_socket_t s, int wake) {
 487         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 488
 489         assert( SLAP_SOCK_IS_ACTIVE( s ));
 490         if ( !SLAP_SOCK_IS_WRITE( s )) {
 491                 SLAP_SOCK_SET_WRITE( s );
 492                 slap_daemon.sd_nwriters++;
 493         }
 494
 495         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 496         WAKE_LISTENER(wake);
 497 }
 498
 499 void slapd_clr_read(ber_socket_t s, int wake) {
 500         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 501
 502         assert( SLAP_SOCK_IS_ACTIVE( s ));
 503         SLAP_SOCK_CLR_READ( s );
 504
 505         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 506         WAKE_LISTENER(wake);
 507 }
 508
 509 void slapd_set_read(ber_socket_t s, int wake) {
 510         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 511
 512         assert( SLAP_SOCK_IS_ACTIVE( s ));
 513         if (!SLAP_SOCK_IS_READ( s ))
 514                 SLAP_SOCK_SET_READ( s );
 515
 516         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 517         WAKE_LISTENER(wake);
 518 }
 519
 520 static void slapd_close(ber_socket_t s) {
 521         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 522                 (long) s, 0, 0 );
 523         tcp_close(s);
 524 }
 525
 526 static void slap_free_listener_addresses(struct sockaddr **sal)
 527 {
 528         struct sockaddr **sap;
 529
 530         if (sal == NULL) {
 531                 return;
 532         }
 533
 534         for (sap = sal; *sap != NULL; sap++) {
 535                 ch_free(*sap);
 536         }
 537
 538         ch_free(sal);
 539 }
 540
 541 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 542 static int get_url_perms(
 543         char    **exts,
 544         mode_t  *perms,
 545         int     *crit )
 546 {
 547         int     i;
 548
 549         assert( exts );
 550         assert( perms );
 551         assert( crit );
 552
 553         *crit = 0;
 554         for ( i = 0; exts[ i ]; i++ ) {
 555                 char    *type = exts[ i ];
 556                 int     c = 0;
 557
 558                 if ( type[ 0 ] == '!' ) {
 559                         c = 1;
 560                         type++;
 561                 }
 562
 563                 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=", sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 ) {
 564                         char    *value = type
 565                                 + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
 566                         mode_t  p = 0;
 567                         int     j;
 568
 569                         switch (strlen(value)) {
 570                         case 4:
 571                                 /* skip leading '0' */
 572                                 if ( value[ 0 ] != '0' ) {
 573                                         return LDAP_OTHER;
 574                                 }
 575                                 value++;
 576
 577                         case 3:
 578                                 for ( j = 0; j < 3; j++) {
 579                                         int     v;
 580
 581                                         v = value[ j ] - '0';
 582
 583                                         if ( v < 0 || v > 7 ) {
 584                                                 return LDAP_OTHER;
 585                                         }
 586
 587                                         p |= v << 3*(2-j);
 588                                 }
 589                                 break;
 590
 591                         case 10:
 592                                 for ( j = 1; j < 10; j++ ) {
 593                                         static mode_t   m[] = { 0,
 594                                                 S_IRUSR, S_IWUSR, S_IXUSR,
 595                                                 S_IRGRP, S_IWGRP, S_IXGRP,
 596                                                 S_IROTH, S_IWOTH, S_IXOTH
 597                                         };
 598                                         static char     c[] = "-rwxrwxrwx";
 599
 600                                         if ( value[ j ] == c[ j ] ) {
 601                                                 p |= m[ j ];
 602
 603                                         } else if ( value[ j ] != '-' ) {
 604                                                 return LDAP_OTHER;
 605                                         }
 606                                 }
 607                                 break;
 608
 609                         default:
 610                                 return LDAP_OTHER;
 611                         }
 612
 613                         *crit = c;
 614                         *perms = p;
 615
 616                         return LDAP_SUCCESS;
 617                 }
 618         }
 619
 620         return LDAP_OTHER;
 621 }
 622 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 623
 624 /* port = 0 indicates AF_LOCAL */
 625 static int slap_get_listener_addresses(
 626         const char *host,
 627         unsigned short port,
 628         struct sockaddr ***sal)
 629 {
 630         struct sockaddr **sap;
 631
 632 #ifdef LDAP_PF_LOCAL
 633         if ( port == 0 ) {
 634                 *sal = ch_malloc(2 * sizeof(void *));
 635                 if (*sal == NULL) {
 636                         return -1;
 637                 }
 638
 639                 sap = *sal;
 640                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 641                 if (*sap == NULL)
 642                         goto errexit;
 643                 sap[1] = NULL;
 644
 645                 if ( strlen(host) >
 646                      (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 647                         Debug( LDAP_DEBUG_ANY,
 648                                "daemon: domain socket path (%s) too long in URL",
 649                                host, 0, 0);
 650                         goto errexit;
 651                 }
 652
 653                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 654                 (*sap)->sa_family = AF_LOCAL;
 655                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 656         } else
 657 #endif
 658         {
 659 #ifdef HAVE_GETADDRINFO
 660                 struct addrinfo hints, *res, *sai;
 661                 int n, err;
 662                 char serv[7];
 663
 664                 memset( &hints, '\0', sizeof(hints) );
 665                 hints.ai_flags = AI_PASSIVE;
 666                 hints.ai_socktype = SOCK_STREAM;
 667                 hints.ai_family = slap_inet4or6;
 668                 snprintf(serv, sizeof serv, "%d", port);
 669
 670                 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
 671                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 672                                 AC_GAI_STRERROR(err), 0, 0);
 673                         return -1;
 674                 }
 675
 676                 sai = res;
 677                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
 678                         /* EMPTY */ ;
 679                 }
 680                 *sal = ch_calloc(n, sizeof(void *));
 681                 if (*sal == NULL) {
 682                         return -1;
 683                 }
 684
 685                 sap = *sal;
 686                 *sap = NULL;
 687
 688                 for ( sai=res; sai; sai=sai->ai_next ) {
 689                         if( sai->ai_addr == NULL ) {
 690                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
 691                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 692                                 freeaddrinfo(res);
 693                                 goto errexit;
 694                         }
 695
 696                         switch (sai->ai_family) {
 697 #  ifdef LDAP_PF_INET6
 698                         case AF_INET6:
 699                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 700                                 if (*sap == NULL) {
 701                                         freeaddrinfo(res);
 702                                         goto errexit;
 703                                 }
 704                                 *(struct sockaddr_in6 *)*sap =
 705                                         *((struct sockaddr_in6 *)sai->ai_addr);
 706                                 break;
 707 #  endif
 708                         case AF_INET:
 709                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 710                                 if (*sap == NULL) {
 711                                         freeaddrinfo(res);
 712                                         goto errexit;
 713                                 }
 714                                 *(struct sockaddr_in *)*sap =
 715                                         *((struct sockaddr_in *)sai->ai_addr);
 716                                 break;
 717                         default:
 718                                 *sap = NULL;
 719                                 break;
 720                         }
 721
 722                         if (*sap != NULL) {
 723                                 (*sap)->sa_family = sai->ai_family;
 724                                 sap++;
 725                                 *sap = NULL;
 726                         }
 727                 }
 728
 729                 freeaddrinfo(res);
 730 #else
 731                 int i, n = 1;
 732                 struct in_addr in;
 733                 struct hostent *he = NULL;
 734
 735                 if ( host == NULL ) {
 736                         in.s_addr = htonl(INADDR_ANY);
 737
 738                 } else if ( !inet_aton( host, &in ) ) {
 739                         he = gethostbyname( host );
 740                         if( he == NULL ) {
 741                                 Debug( LDAP_DEBUG_ANY,
 742                                        "daemon: invalid host %s", host, 0, 0);
 743                                 return -1;
 744                         }
 745                         for (n = 0; he->h_addr_list[n]; n++) ;
 746                 }
 747
 748                 *sal = ch_malloc((n+1) * sizeof(void *));
 749                 if (*sal == NULL) {
 750                         return -1;
 751                 }
 752
 753                 sap = *sal;
 754                 for ( i = 0; i<n; i++ ) {
 755                         sap[i] = ch_malloc(sizeof(struct sockaddr_in));
 756                         if (*sap == NULL) {
 757                                 goto errexit;
 758                         }
 759                         (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
 760                         sap[i]->sa_family = AF_INET;
 761                         ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
 762                         if (he) {
 763                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, he->h_addr_list[i], sizeof(struct in_addr) );
 764                         } else {
 765                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, &in, sizeof(struct in_addr) );
 766                         }
 767                 }
 768                 sap[i] = NULL;
 769 #endif
 770         }
 771
 772         return 0;
 773
 774 errexit:
 775         slap_free_listener_addresses(*sal);
 776         return -1;
 777 }
 778
 779 static int slap_open_listener(
 780         const char* url,
 781         int *listeners,
 782         int *cur
 783         )
 784 {
 785         int     num, tmp, rc;
 786         Listener l;
 787         Listener *li;
 788         LDAPURLDesc *lud;
 789         unsigned short port;
 790         int err, addrlen = 0;
 791         struct sockaddr **sal, **psal;
 792         int socktype = SOCK_STREAM;     /* default to COTS */
 793
 794 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 795         /*
 796          * use safe defaults
 797          */
 798         int     crit = 1;
 799 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 800
 801         rc = ldap_url_parse( url, &lud );
 802
 803         if( rc != LDAP_URL_SUCCESS ) {
 804                 Debug( LDAP_DEBUG_ANY,
 805                         "daemon: listen URL \"%s\" parse error=%d\n",
 806                         url, rc, 0 );
 807                 return rc;
 808         }
 809
 810         l.sl_url.bv_val = NULL;
 811         l.sl_is_mute = 0;
 812
 813 #ifndef HAVE_TLS
 814         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 815                 Debug( LDAP_DEBUG_ANY,
 816                         "daemon: TLS not supported (%s)\n",
 817                         url, 0, 0 );
 818                 ldap_free_urldesc( lud );
 819                 return -1;
 820         }
 821
 822         if(! lud->lud_port ) {
 823                 lud->lud_port = LDAP_PORT;
 824         }
 825
 826 #else
 827         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 828
 829         if(! lud->lud_port ) {
 830                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 831         }
 832 #endif
 833
 834         port = (unsigned short) lud->lud_port;
 835
 836         tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
 837         if ( tmp == LDAP_PROTO_IPC ) {
 838 #ifdef LDAP_PF_LOCAL
 839                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 840                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 841                 } else {
 842                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 843                 }
 844 #else
 845
 846                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 847                         url, 0, 0);
 848                 ldap_free_urldesc( lud );
 849                 return -1;
 850 #endif
 851         } else {
 852                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 853                         || strcmp(lud->lud_host, "*") == 0 )
 854                 {
 855                         err = slap_get_listener_addresses(NULL, port, &sal);
 856                 } else {
 857                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 858                 }
 859         }
 860 #ifdef LDAP_CONNECTIONLESS
 861         l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
 862 #endif
 863
 864 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 865         if ( lud->lud_exts ) {
 866                 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
 867         } else {
 868                 l.sl_perms = S_IRWXU | S_IRWXO;
 869         }
 870 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 871
 872         ldap_free_urldesc( lud );
 873         if ( err ) {
 874                 return -1;
 875         }
 876
 877         /* If we got more than one address returned, we need to make space
 878          * for it in the slap_listeners array.
 879          */
 880         for ( num=0; sal[num]; num++ );
 881         if ( num > 1 ) {
 882                 *listeners += num-1;
 883                 slap_listeners = ch_realloc( slap_listeners, (*listeners + 1) * sizeof(Listener *) );
 884         }
 885
 886         psal = sal;
 887         while ( *sal != NULL ) {
 888                 char *af;
 889                 switch( (*sal)->sa_family ) {
 890                 case AF_INET:
 891                         af = "IPv4";
 892                         break;
 893 #ifdef LDAP_PF_INET6
 894                 case AF_INET6:
 895                         af = "IPv6";
 896                         break;
 897 #endif
 898 #ifdef LDAP_PF_LOCAL
 899                 case AF_LOCAL:
 900                         af = "Local";
 901                         break;
 902 #endif
 903                 default:
 904                         sal++;
 905                         continue;
 906                 }
 907 #ifdef LDAP_CONNECTIONLESS
 908                 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
 909 #endif
 910                 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
 911                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 912                         int err = sock_errno();
 913                         Debug( LDAP_DEBUG_ANY,
 914                                 "daemon: %s socket() failed errno=%d (%s)\n",
 915                                 af, err, sock_errstr(err) );
 916                         sal++;
 917                         continue;
 918                 }
 919 #ifndef HAVE_WINSOCK
 920                 if ( l.sl_sd >= dtblsize ) {
 921                         Debug( LDAP_DEBUG_ANY,
 922                                 "daemon: listener descriptor %ld is too great %ld\n",
 923                                 (long) l.sl_sd, (long) dtblsize, 0 );
 924                         tcp_close( l.sl_sd );
 925                         sal++;
 926                         continue;
 927                 }
 928 #endif
 929 #ifdef LDAP_PF_LOCAL
 930                 if ( (*sal)->sa_family == AF_LOCAL ) {
 931                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 932                 } else
 933 #endif
 934                 {
 935 #ifdef SO_REUSEADDR
 936                         /* enable address reuse */
 937                         tmp = 1;
 938                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 939                                 (char *) &tmp, sizeof(tmp) );
 940                         if ( rc == AC_SOCKET_ERROR ) {
 941                                 int err = sock_errno();
 942                                 Debug( LDAP_DEBUG_ANY,
 943                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 944                                        (long) l.sl_sd, err, sock_errstr(err) );
 945                         }
 946 #endif
 947                 }
 948
 949                 switch( (*sal)->sa_family ) {
 950                 case AF_INET:
 951                         addrlen = sizeof(struct sockaddr_in);
 952                         break;
 953 #ifdef LDAP_PF_INET6
 954                 case AF_INET6:
 955 #ifdef IPV6_V6ONLY
 956                         /* Try to use IPv6 sockets for IPv6 only */
 957                         tmp = 1;
 958                         rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
 959                                          (char *) &tmp, sizeof(tmp) );
 960                         if ( rc == AC_SOCKET_ERROR ) {
 961                                 int err = sock_errno();
 962                                 Debug( LDAP_DEBUG_ANY,
 963                                        "slapd(%ld): setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
 964                                        (long) l.sl_sd, err, sock_errstr(err) );
 965                         }
 966 #endif
 967                         addrlen = sizeof(struct sockaddr_in6);
 968                         break;
 969 #endif
 970 #ifdef LDAP_PF_LOCAL
 971                 case AF_LOCAL:
 972                         addrlen = sizeof(struct sockaddr_un);
 973                         break;
 974 #endif
 975                 }
 976
 977                 if (bind(l.sl_sd, *sal, addrlen)) {
 978                         err = sock_errno();
 979                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 980                        (long) l.sl_sd, err, sock_errstr(err) );
 981                         tcp_close( l.sl_sd );
 982                         sal++;
 983                         continue;
 984                 }
 985
 986         switch ( (*sal)->sa_family ) {
 987 #ifdef LDAP_PF_LOCAL
 988         case AF_LOCAL: {
 989                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 990 #if 0 /* don't muck with socket perms */
 991                 if ( chmod( addr, l.sl_perms ) < 0 && crit ) {
 992                         int err = sock_errno();
 993                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 994                                (long) l.sl_sd, err, sock_errstr(err) );
 995                         tcp_close( l.sl_sd );
 996                         slap_free_listener_addresses(psal);
 997                         return -1;
 998                 }
 999 #endif
1000                 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
1001                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
1002                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
1003                                 "PATH=%s", addr );
1004         } break;
1005 #endif /* LDAP_PF_LOCAL */
1006
1007         case AF_INET: {
1008                 char *s;
1009 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1010                 char addr[INET_ADDRSTRLEN];
1011                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
1012                            addr, sizeof(addr) );
1013                 s = addr;
1014 #else
1015                 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
1016 #endif
1017                 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
1018                 l.sl_name.bv_val = ber_memalloc( sizeof("IP=255.255.255.255:65535") );
1019                 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
1020                         "IP=%s:%d",
1021                          s != NULL ? s : SLAP_STRING_UNKNOWN, port );
1022                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1023         } break;
1024
1025 #ifdef LDAP_PF_INET6
1026         case AF_INET6: {
1027                 char addr[INET6_ADDRSTRLEN];
1028                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
1029                            addr, sizeof addr);
1030                 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
1031                 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
1032                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
1033                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
1034                                 addr, port );
1035                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1036         } break;
1037 #endif /* LDAP_PF_INET6 */
1038
1039         default:
1040                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
1041                         (int) (*sal)->sa_family, 0, 0 );
1042                 break;
1043         }
1044
1045         AC_MEMCPY(&l.sl_sa, *sal, addrlen);
1046         ber_str2bv( url, 0, 1, &l.sl_url);
1047         li = ch_malloc( sizeof( Listener ) );
1048         *li = l;
1049         slap_listeners[*cur] = li;
1050         (*cur)++;
1051         sal++;
1052
1053         } /* while ( *sal != NULL ) */
1054
1055         slap_free_listener_addresses(psal);
1056
1057         if ( l.sl_url.bv_val == NULL )
1058         {
1059                 Debug( LDAP_DEBUG_TRACE,
1060                         "slap_open_listener: failed on %s\n", url, 0, 0 );
1061                 return -1;
1062         }
1063
1064         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
1065                 l.sl_url.bv_val, 0, 0 );
1066         return 0;
1067 }
1068
1069 static int sockinit(void);
1070 static int sockdestroy(void);
1071
1072 int slapd_daemon_init( const char *urls )
1073 {
1074         int i, j, n, rc;
1075         char **u;
1076
1077         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
1078                 urls ? urls : "<null>", 0, 0 );
1079         if( (rc = sockinit()) != 0 ) {
1080                 return rc;
1081         }
1082
1083 #ifdef HAVE_SYSCONF
1084         dtblsize = sysconf( _SC_OPEN_MAX );
1085 #elif HAVE_GETDTABLESIZE
1086         dtblsize = getdtablesize();
1087 #else
1088         dtblsize = FD_SETSIZE;
1089 #endif
1090
1091         /* open a pipe (or something equivalent connected to itself).
1092          * we write a byte on this fd whenever we catch a signal. The main
1093          * loop will be select'ing on this socket, and will wake up when
1094          * this byte arrives.
1095          */
1096         if( (rc = lutil_pair( wake_sds )) < 0 ) {
1097                 Debug( LDAP_DEBUG_ANY,
1098                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
1099                 return rc;
1100         }
1101
1102         SLAP_SOCK_SET_INIT;
1103
1104         if( urls == NULL ) {
1105                 urls = "ldap:///";
1106         }
1107
1108         u = ldap_str2charray( urls, " " );
1109
1110         if( u == NULL || u[0] == NULL ) {
1111                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1112                         urls, 0, 0 );
1113                 return -1;
1114         }
1115
1116         for( i=0; u[i] != NULL; i++ ) {
1117                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1118                         u[i], 0, 0 );
1119         }
1120
1121         if( i == 0 ) {
1122                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1123                         urls, 0, 0 );
1124                 ldap_charray_free( u );
1125                 return -1;
1126         }
1127
1128         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1129                 i, 0, 0 );
1130         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1131
1132         for(n = 0, j = 0; u[n]; n++ ) {
1133                 if ( slap_open_listener( u[n], &i, &j ) ) {
1134                         ldap_charray_free( u );
1135                         return -1;
1136                 }
1137         }
1138         slap_listeners[j] = NULL;
1139
1140         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1141                 i, 0, 0 );
1142
1143 #ifdef HAVE_SLP
1144         if( slapd_register_slp ) {
1145                 slapd_slp_init( urls );
1146                 slapd_slp_reg();
1147         }
1148 #endif
1149
1150         ldap_charray_free( u );
1151         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1152         return !i;
1153 }
1154
1155
1156 int
1157 slapd_daemon_destroy(void)
1158 {
1159         connections_destroy();
1160         tcp_close( wake_sds[1] );
1161         tcp_close( wake_sds[0] );
1162         sockdestroy();
1163
1164 #ifdef HAVE_SLP
1165         if( slapd_register_slp ) {
1166                 slapd_slp_dereg();
1167                 slapd_slp_deinit();
1168         }
1169 #endif
1170
1171         return 0;
1172 }
1173
1174
1175 static void
1176 close_listeners(
1177         int remove
1178 )
1179 {
1180         int l;
1181
1182         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1183                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1184                         if ( remove )
1185                                 slapd_remove( slap_listeners[l]->sl_sd, 0, 0 );
1186 #ifdef LDAP_PF_LOCAL
1187                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1188                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1189                         }
1190 #endif /* LDAP_PF_LOCAL */
1191                         slapd_close( slap_listeners[l]->sl_sd );
1192                 }
1193                 if ( slap_listeners[l]->sl_url.bv_val )
1194                         ber_memfree( slap_listeners[l]->sl_url.bv_val );
1195                 if ( slap_listeners[l]->sl_name.bv_val )
1196                         ber_memfree( slap_listeners[l]->sl_name.bv_val );
1197                 free ( slap_listeners[l] );
1198                 slap_listeners[l] = NULL;
1199         }
1200 }
1201
1202 static int
1203 slapd_handle_listener(
1204         Listener *sl
1205 )
1206 {
1207         Sockaddr                from;
1208
1209         ber_socket_t s;
1210         socklen_t len = sizeof(from);
1211         long id;
1212         slap_ssf_t ssf = 0;
1213         struct berval authid = BER_BVNULL;
1214 #ifdef SLAPD_RLOOKUPS
1215         char hbuf[NI_MAXHOST];
1216 #endif
1217
1218         char    *dnsname = NULL;
1219         char    *peeraddr = NULL;
1220 #ifdef LDAP_PF_LOCAL
1221         char peername[MAXPATHLEN + sizeof("PATH=")];
1222 #elif defined(LDAP_PF_INET6)
1223         char peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1224 #else
1225         char peername[sizeof("IP=255.255.255.255:65336")];
1226 #endif /* LDAP_PF_LOCAL */
1227
1228         peername[0] = '\0';
1229
1230 #ifdef LDAP_CONNECTIONLESS
1231         if ( sl->sl_is_udp ) {
1232                 /* The first time we receive a query, we set this
1233                  * up as a "connection". It remains open for the life
1234                  * of the slapd.
1235                  */
1236                 if ( sl->sl_is_udp < 2 ) {
1237                         id = connection_init( sl->sl_sd, sl, "", "",
1238                                 CONN_IS_UDP, ssf, NULL );
1239                     sl->sl_is_udp++;
1240                 }
1241                 return 1;
1242         }
1243 #endif
1244
1245 #  ifdef LDAP_PF_LOCAL
1246         /* FIXME: apparently accept doesn't fill
1247          * the sun_path sun_path member */
1248         from.sa_un_addr.sun_path[0] = '\0';
1249 #  endif /* LDAP_PF_LOCAL */
1250
1251         s = accept( sl->sl_sd, (struct sockaddr *) &from, &len );
1252         if ( s == AC_SOCKET_INVALID ) {
1253                 int err = sock_errno();
1254
1255                 if(
1256 #ifdef EMFILE
1257                     err == EMFILE ||
1258 #endif
1259 #ifdef ENFILE
1260                     err == ENFILE ||
1261 #endif
1262                     0 )
1263                 {
1264                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1265                         emfile++;
1266                         /* Stop listening until an existing session closes */
1267                         sl->sl_is_mute = 1;
1268                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1269                 }
1270
1271                 Debug( LDAP_DEBUG_ANY,
1272                         "daemon: accept(%ld) failed errno=%d (%s)\n",
1273                         (long) sl->sl_sd, err,
1274                         sock_errstr(err) );
1275                 ldap_pvt_thread_yield();
1276                 return 0;
1277         }
1278
1279 #ifndef HAVE_WINSOCK
1280         /* make sure descriptor number isn't too great */
1281         if ( s >= dtblsize ) {
1282                 Debug( LDAP_DEBUG_ANY,
1283                         "daemon: %ld beyond descriptor table size %ld\n",
1284                         (long) s, (long) dtblsize, 0 );
1285
1286                 slapd_close(s);
1287                 ldap_pvt_thread_yield();
1288                 return 0;
1289         }
1290 #endif
1291
1292 #ifdef LDAP_DEBUG
1293         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1294
1295         /* newly accepted stream should not be in any of the FD SETS */
1296         assert( SLAP_SOCK_NOT_ACTIVE( s ));
1297
1298         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1299 #endif
1300
1301 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1302 #ifdef LDAP_PF_LOCAL
1303         /* for IPv4 and IPv6 sockets only */
1304         if ( from.sa_addr.sa_family != AF_LOCAL )
1305 #endif /* LDAP_PF_LOCAL */
1306         {
1307                 int rc;
1308                 int tmp;
1309 #ifdef SO_KEEPALIVE
1310                 /* enable keep alives */
1311                 tmp = 1;
1312                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1313                         (char *) &tmp, sizeof(tmp) );
1314                 if ( rc == AC_SOCKET_ERROR ) {
1315                         int err = sock_errno();
1316                         Debug( LDAP_DEBUG_ANY,
1317                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1318                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1319                 }
1320 #endif
1321 #ifdef TCP_NODELAY
1322                 /* enable no delay */
1323                 tmp = 1;
1324                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1325                         (char *)&tmp, sizeof(tmp) );
1326                 if ( rc == AC_SOCKET_ERROR ) {
1327                         int err = sock_errno();
1328                         Debug( LDAP_DEBUG_ANY,
1329                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1330                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1331                 }
1332 #endif
1333         }
1334 #endif
1335
1336         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
1337                 (long) s, 0, 0 );
1338         switch ( from.sa_addr.sa_family ) {
1339 #  ifdef LDAP_PF_LOCAL
1340         case AF_LOCAL:
1341                 /* FIXME: apparently accept doesn't fill
1342                  * the sun_path sun_path member */
1343                 if ( from.sa_un_addr.sun_path[0] == '\0' ) {
1344                         AC_MEMCPY( from.sa_un_addr.sun_path,
1345                                         sl->sl_sa.sa_un_addr.sun_path,
1346                                         sizeof( from.sa_un_addr.sun_path ) );
1347                 }
1348
1349                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1350                 ssf = local_ssf;
1351                 {
1352                         uid_t uid;
1353                         gid_t gid;
1354
1355                         if( getpeereid( s, &uid, &gid ) == 0 ) {
1356                                 authid.bv_val = ch_malloc(
1357                                         sizeof("uidnumber=4294967295+gidnumber=4294967295,"
1358                                         "cn=peercred,cn=external,cn=auth"));
1359                                 authid.bv_len = sprintf( authid.bv_val,
1360                                         "uidnumber=%d+gidnumber=%d,"
1361                                         "cn=peercred,cn=external,cn=auth",
1362                                         (int) uid, (int) gid);
1363                         }
1364                 }
1365                 dnsname = "local";
1366                 break;
1367 #endif /* LDAP_PF_LOCAL */
1368
1369 #  ifdef LDAP_PF_INET6
1370         case AF_INET6:
1371         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1372                 peeraddr = inet_ntoa( *((struct in_addr *)
1373                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1374                 sprintf( peername, "IP=%s:%d",
1375                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1376                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1377         } else {
1378                 char addr[INET6_ADDRSTRLEN];
1379
1380                 peeraddr = (char *) inet_ntop( AF_INET6,
1381                                       &from.sa_in6_addr.sin6_addr,
1382                                       addr, sizeof addr );
1383                 sprintf( peername, "IP=%s %d",
1384                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1385                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1386         }
1387         break;
1388 #  endif /* LDAP_PF_INET6 */
1389
1390         case AF_INET:
1391         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1392         sprintf( peername, "IP=%s:%d",
1393                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1394                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1395                 break;
1396
1397         default:
1398                 slapd_close(s);
1399                 return 0;
1400         }
1401
1402         if ( ( from.sa_addr.sa_family == AF_INET )
1403 #ifdef LDAP_PF_INET6
1404                 || ( from.sa_addr.sa_family == AF_INET6 )
1405 #endif
1406         ) {
1407 #ifdef SLAPD_RLOOKUPS
1408                 if ( use_reverse_lookup ) {
1409                         char *herr;
1410                         if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
1411                                 sizeof(hbuf), &herr ) == 0) {
1412                                 ldap_pvt_str2lower( hbuf );
1413                                 dnsname = hbuf;
1414                         }
1415                 }
1416 #else
1417                 dnsname = NULL;
1418 #endif /* SLAPD_RLOOKUPS */
1419
1420 #ifdef HAVE_TCPD
1421                 if ( !hosts_ctl("slapd",
1422                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1423                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1424                                 SLAP_STRING_UNKNOWN ))
1425                 {
1426                         /* DENY ACCESS */
1427                         Statslog( LDAP_DEBUG_STATS,
1428                                 "fd=%ld DENIED from %s (%s)\n",
1429                                 (long) s,
1430                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1431                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1432                                 0, 0 );
1433                         slapd_close(s);
1434                         return 0;
1435                 }
1436 #endif /* HAVE_TCPD */
1437         }
1438
1439         id = connection_init(s, sl,
1440                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1441                 peername,
1442 #ifdef HAVE_TLS
1443                 sl->sl_is_tls ? CONN_IS_TLS : 0,
1444 #else
1445                 0,
1446 #endif
1447                 ssf,
1448                 authid.bv_val ? &authid : NULL );
1449
1450         if( authid.bv_val ) ch_free(authid.bv_val);
1451
1452         if( id < 0 ) {
1453                 Debug( LDAP_DEBUG_ANY,
1454                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1455                         (long) s, peername, sl->sl_name.bv_val );
1456                 slapd_close(s);
1457                 return 0;
1458         }
1459
1460         Statslog( LDAP_DEBUG_STATS,
1461                 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1462                 id, (long) s, peername, sl->sl_name.bv_val,
1463                 0 );
1464
1465         slapd_add( s, 1, NULL );
1466         return 0;
1467 }
1468
1469 static void *
1470 slapd_daemon_task(
1471         void *ptr
1472 )
1473 {
1474         int l;
1475         time_t  last_idle_check = 0;
1476         struct timeval idle;
1477
1478 #define SLAPD_IDLE_CHECK_LIMIT 4
1479
1480         if ( global_idletimeout > 0 ) {
1481                 last_idle_check = slap_get_time();
1482                 /* Set the select timeout.
1483                  * Don't just truncate, preserve the fractions of
1484                  * seconds to prevent sleeping for zero time.
1485                  */
1486                 idle.tv_sec = global_idletimeout/SLAPD_IDLE_CHECK_LIMIT;
1487                 idle.tv_usec = global_idletimeout - idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT;
1488                 idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
1489         } else {
1490                 idle.tv_sec = 0;
1491                 idle.tv_usec = 0;
1492         }
1493
1494         slapd_add( wake_sds[0], 0, NULL );
1495
1496         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1497                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1498                         continue;
1499 #ifdef LDAP_CONNECTIONLESS
1500                 /* Since this is connectionless, the data port is the
1501                  * listening port. The listen() and accept() calls
1502                  * are unnecessary.
1503                  */
1504                 if ( slap_listeners[l]->sl_is_udp ) {
1505                         slapd_add( slap_listeners[l]->sl_sd, 1, slap_listeners[l] );
1506                         continue;
1507                 }
1508 #endif
1509
1510                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
1511                         int err = sock_errno();
1512
1513 #ifdef LDAP_PF_INET6
1514                         /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1515                          * we are already listening to in6addr_any, then we want to ignore
1516                          * this and continue.
1517                          */
1518                         if ( err == EADDRINUSE ) {
1519                                 int i;
1520                                 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1521                                 struct sockaddr_in6 sa6;
1522
1523                                 if ( sa.sin_family == AF_INET &&
1524                                      sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1525                                         for ( i = 0 ; i < l; i++ ) {
1526                                                 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1527                                                 if ( sa6.sin6_family == AF_INET6 &&
1528                                                      !memcmp( &sa6.sin6_addr, &in6addr_any, sizeof(struct in6_addr) ) )
1529                                                         break;
1530                                         }
1531
1532                                         if ( i < l ) {
1533                                                 /* We are already listening to in6addr_any */
1534                                                 Debug( LDAP_DEBUG_CONNS,
1535                                                        "daemon: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n",
1536                                                        0, 0, 0 );
1537                                                 slapd_close( slap_listeners[l]->sl_sd );
1538                                                 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1539                                                 continue;
1540                                         }
1541                                 }
1542                         }
1543 #endif
1544                         Debug( LDAP_DEBUG_ANY,
1545                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1546                                         slap_listeners[l]->sl_url.bv_val, err,
1547                                         sock_errstr(err) );
1548                         return( (void*)-1 );
1549                 }
1550
1551                 slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l] );
1552         }
1553
1554 #ifdef HAVE_NT_SERVICE_MANAGER
1555         if ( started_event != NULL ) {
1556                 ldap_pvt_thread_cond_signal( &started_event );
1557         }
1558 #endif
1559         /* initialization complete. Here comes the loop. */
1560
1561         while ( !slapd_shutdown ) {
1562                 ber_socket_t i;
1563                 int ns, nwriters;
1564                 int at;
1565                 ber_socket_t nfds, nrfds, nwfds;
1566 #define SLAPD_EBADF_LIMIT 16
1567                 int ebadf = 0;
1568
1569                 time_t  now;
1570
1571                 SLAP_EVENT_DECL;
1572
1573                 struct timeval          tv;
1574                 struct timeval          *tvp;
1575
1576                 struct timeval          *cat;
1577                 time_t                          tdelta = 1;
1578                 struct re_s*            rtask;
1579                 now = slap_get_time();
1580
1581                 if( ( global_idletimeout > 0 ) &&
1582                         difftime( last_idle_check +
1583                         global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1584                         connections_timeout_idle( now );
1585                         last_idle_check = now;
1586                 }
1587                 tv = idle;
1588
1589 #ifdef SIGHUP
1590                 if( slapd_gentle_shutdown ) {
1591                         ber_socket_t active;
1592
1593                         if( slapd_gentle_shutdown == 1 ) {
1594                                 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1595                                 close_listeners( 1 );
1596                                 frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
1597                                 slapd_gentle_shutdown = 2;
1598                         }
1599
1600                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1601                         active = slap_daemon.sd_nactives;
1602                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1603                         if( active == 0 ) {
1604                                 slapd_shutdown = 2;
1605                                 break;
1606                         }
1607                 }
1608 #endif
1609
1610                 at = 0;
1611
1612                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1613
1614                 nwriters = slap_daemon.sd_nwriters;
1615                 SLAP_EVENT_INIT;
1616
1617                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1618                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1619                                 continue;
1620                         if ( slap_listeners[l]->sl_is_mute )
1621                                 SLAP_SOCK_SET_MUTE( slap_listeners[l]->sl_sd );
1622                         else
1623                         if ( SLAP_SOCK_IS_MUTE( slap_listeners[l]->sl_sd ))
1624                             SLAP_SOCK_CLR_MUTE( slap_listeners[l]->sl_sd );
1625                 }
1626
1627                 nfds = SLAP_EVENT_MAX;
1628
1629                 if ( global_idletimeout && slap_daemon.sd_nactives )
1630                         at = 1;
1631
1632                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1633
1634                 if ( at
1635 #if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
1636                         &&  ( tv.tv_sec || tv.tv_usec )
1637 #endif
1638                         )
1639                         tvp = &tv;
1640                 else
1641                         tvp = NULL;
1642
1643                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
1644                 rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
1645                 while ( cat && cat->tv_sec && cat->tv_sec <= now ) {
1646                         if ( ldap_pvt_runqueue_isrunning( &syncrepl_rq, rtask )) {
1647                                 ldap_pvt_runqueue_resched( &syncrepl_rq, rtask, 0 );
1648                         } else {
1649                                 ldap_pvt_runqueue_runtask( &syncrepl_rq, rtask );
1650                                 ldap_pvt_runqueue_resched( &syncrepl_rq, rtask, 0 );
1651                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
1652                                 ldap_pvt_thread_pool_submit( &connection_pool,
1653                                                                                         rtask->routine, (void *) rtask );
1654                                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
1655                         }
1656                         rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
1657                 }
1658                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
1659
1660                 if ( cat != NULL ) {
1661                         time_t diff = difftime( cat->tv_sec, now );
1662                         if ( diff == 0 )
1663                                 diff = tdelta;
1664                         if ( tvp == NULL || diff < tv.tv_sec ) {
1665                                 tv.tv_sec = diff;
1666                                 tv.tv_usec = 0;
1667                                 tvp = &tv;
1668                         }
1669                 }
1670
1671                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1672                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ||
1673                             slap_listeners[l]->sl_is_mute )
1674                                 continue;
1675
1676                         Debug( LDAP_DEBUG_CONNS,
1677                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1678                                         slap_listeners[l]->sl_sd, at,
1679                                         tvp == NULL ? "NULL" : "zero" );
1680                 }
1681
1682                 switch(ns = SLAP_EVENT_WAIT(tvp))
1683                 {
1684                 case -1: {      /* failure - try again */
1685                                 int err = sock_errno();
1686
1687                                 if( err == EBADF
1688 #ifdef WSAENOTSOCK
1689                                         /* you'd think this would be EBADF */
1690                                         || err == WSAENOTSOCK
1691 #endif
1692                                 ) {
1693                                         if (++ebadf < SLAPD_EBADF_LIMIT)
1694                                                 continue;
1695                                 }
1696
1697                                 if( err != EINTR ) {
1698                                         Debug( LDAP_DEBUG_CONNS,
1699                                                 "daemon: select failed (%d): %s\n",
1700                                                 err, sock_errstr(err), 0 );
1701                                         slapd_shutdown = 2;
1702                                 }
1703                         }
1704                         continue;
1705
1706                 case 0:         /* timeout - let threads run */
1707                         ebadf = 0;
1708                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1709                             0, 0, 0 );
1710
1711                         ldap_pvt_thread_yield();
1712                         continue;
1713
1714                 default:        /* something happened - deal with it */
1715                         if( slapd_shutdown ) continue;
1716
1717                         ebadf = 0;
1718                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
1719                                 ns, 0, 0 );
1720                         /* FALL THRU */
1721                 }
1722
1723                 /* We don't need to examine the event status for wake_sds;
1724                  * if waking is set and we woke up, we'll read whatever
1725                  * we can.
1726                  */
1727                 if ( waking ) {
1728                         char c[BUFSIZ];
1729                         tcp_read( wake_sds[0], c, sizeof(c) );
1730                         waking = 0;
1731                         ns--;
1732                         continue;
1733                 }
1734
1735 #if SLAP_EVENTS_ARE_INDEXED
1736                 /* The event slot equals the descriptor number - this is
1737                  * true for Unix select and poll. We treat Windows select
1738                  * like this too, even though it's a kludge.
1739                  */
1740                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1741                         int rc;
1742
1743                         if ( ns <= 0 ) break;
1744
1745                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1746                                 continue;
1747
1748                         if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd ))
1749                                 continue;
1750
1751                         ns--;
1752
1753                         rc = slapd_handle_listener(slap_listeners[l]);
1754
1755 #ifdef LDAP_CONNECTIONLESS
1756                         /* This is a UDP session, let the data loop process it */
1757                         if ( rc ) continue;
1758 #endif
1759
1760                         /* Don't need to look at this in the data loops */
1761                         SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
1762                         SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
1763                 }
1764
1765                 /* bypass the following tests if no descriptors left */
1766                 if ( ns <= 0 ) {
1767                         ldap_pvt_thread_yield();
1768                         continue;
1769                 }
1770
1771                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1772 #ifdef HAVE_WINSOCK
1773                 nrfds = readfds.fd_count;
1774                 nwfds = writefds.fd_count;
1775                 for ( i = 0; i < readfds.fd_count; i++ ) {
1776                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1777                                 readfds.fd_array[i], "r", 0 );
1778                 }
1779                 for ( i = 0; i < writefds.fd_count; i++ ) {
1780                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1781                                 writefds.fd_array[i], "w", 0 );
1782                 }
1783
1784 #else
1785                 nrfds = 0;
1786                 nwfds = 0;
1787                 for ( i = 0; i < nfds; i++ ) {
1788                         int     r, w;
1789
1790                         r = SLAP_EVENT_IS_READ( i );
1791                         w = SLAP_EVENT_IS_WRITE( i );
1792                         if ( r || w ) {
1793                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1794                                     r ? "r" : "", w ? "w" : "" );
1795                                 if ( r ) {
1796                                         nrfds++;
1797                                         ns--;
1798                                 }
1799                                 if ( w ) {
1800                                         nwfds++;
1801                                         ns--;
1802                                 }
1803                         }
1804                         if ( ns <= 0 ) break;
1805                 }
1806 #endif
1807                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1808
1809
1810                 /* loop through the writers */
1811                 for ( i = 0; nwfds > 0; i++ )
1812                 {
1813                         ber_socket_t wd;
1814 #ifdef HAVE_WINSOCK
1815                         wd = writefds.fd_array[i];
1816 #else
1817                         if( ! SLAP_EVENT_IS_WRITE( i ) ) {
1818                                 continue;
1819                         }
1820                         wd = i;
1821 #endif
1822                         nwfds--;
1823
1824                         Debug( LDAP_DEBUG_CONNS,
1825                                 "daemon: write active on %d\n",
1826                                 wd, 0, 0 );
1827                         /*
1828                          * NOTE: it is possible that the connection was closed
1829                          * and that the stream is now inactive.
1830                          * connection_write() must valid the stream is still
1831                          * active.
1832                          */
1833
1834                         if ( connection_write( wd ) < 0 ) {
1835                                 if ( SLAP_EVENT_IS_READ( wd )) {
1836                                         SLAP_EVENT_CLR_READ( (unsigned) wd );
1837                                         nrfds--;
1838                                 }
1839                                 slapd_close( wd );
1840                         }
1841                 }
1842
1843                 for ( i = 0; nrfds > 0; i++ )
1844                 {
1845                         ber_socket_t rd;
1846 #ifdef HAVE_WINSOCK
1847                         rd = readfds.fd_array[i];
1848 #else
1849                         if( ! SLAP_EVENT_IS_READ( i ) ) {
1850                                 continue;
1851                         }
1852                         rd = i;
1853 #endif
1854                         nrfds--;
1855
1856                         Debug ( LDAP_DEBUG_CONNS,
1857                                 "daemon: read activity on %d\n", rd, 0, 0 );
1858                         /*
1859                          * NOTE: it is possible that the connection was closed
1860                          * and that the stream is now inactive.
1861                          * connection_read() must valid the stream is still
1862                          * active.
1863                          */
1864
1865                         if ( connection_read( rd ) < 0 ) {
1866                                 slapd_close( rd );
1867                         }
1868                 }
1869 #else   /* !SLAP_EVENTS_ARE_INDEXED */
1870         /* FIXME */
1871         /* The events are returned in an arbitrary list. This is true
1872          * for /dev/poll, epoll and kqueue. In order to prioritize things
1873          * so that we can handle wake_sds first, listeners second, and then
1874          * all other connections last (as we do for select), we would need
1875          * to use multiple event handles and cascade them.
1876          *
1877          * That seems like a bit of hassle. So the wake_sds check has moved
1878          * above. For epoll and kqueue we can associate arbitrary data with
1879          * an event, so we could use pointers to the listener structure
1880          * instead of just the file descriptor. For /dev/poll we have to
1881          * search the listeners array for a matching descriptor.
1882          */
1883 #ifdef LDAP_DEBUG
1884                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1885
1886                 for (i=0; i<ns; i++) {
1887                         int     r, w;
1888
1889                         if ( SLAP_EVENT_IS_LISTENER(i)
1890 #ifdef LDAP_CONNECTIONLESS
1891                         && !((SLAP_EVENT_LISTENER(i))->sl_is_udp)
1892 #endif
1893                          ) continue;
1894
1895                         r = SLAP_EVENT_IS_READ( i );
1896                         w = SLAP_EVENT_IS_WRITE( i );
1897                         if ( r || w ) {
1898                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", SLAP_EVENT_FD(i),
1899                                     r ? "r" : "", w ? "w" : "" );
1900                         }
1901                 }
1902 #endif
1903                 for (i=0; i<ns; i++) {
1904                         int rc = 1, fd;
1905
1906                         if ( SLAP_EVENT_IS_LISTENER(i) ) {
1907                                 rc = slapd_handle_listener( SLAP_EVENT_LISTENER( i ));
1908                         }
1909                         /* If we found a regular listener, rc is now zero, and we
1910                          * can skip the data portion. But if it was a UDP listener
1911                          * then rc is still 1, and we want to handle the data.
1912                          */
1913                         if ( rc ) {
1914                                 fd = SLAP_EVENT_FD( i );
1915
1916                                 if( SLAP_EVENT_IS_WRITE( i ) ) {
1917                                         Debug( LDAP_DEBUG_CONNS,
1918                                                 "daemon: write active on %d\n",
1919                                                 fd, 0, 0 );
1920                                         /*
1921                                          * NOTE: it is possible that the connection was closed
1922                                          * and that the stream is now inactive.
1923                                          * connection_write() must valid the stream is still
1924                                          * active.
1925                                          */
1926
1927                                         if ( connection_write( fd ) < 0 ) {
1928                                                 slapd_close( fd );
1929                                                 continue;
1930                                         }
1931                                 }
1932                                 if( SLAP_EVENT_IS_READ( i ) ) {
1933                                         Debug( LDAP_DEBUG_CONNS,
1934                                                 "daemon: read active on %d\n",
1935                                                 fd, 0, 0 );
1936                                         /*
1937                                          * NOTE: it is possible that the connection was closed
1938                                          * and that the stream is now inactive.
1939                                          * connection_read() must valid the stream is still
1940                                          * active.
1941                                          */
1942
1943                                         if ( connection_read( fd ) < 0 ) {
1944                                                 slapd_close( fd );
1945                                         }
1946                                 }
1947                         }
1948                 }
1949 #endif  /* SLAP_EVENTS_ARE_INDEXED */
1950
1951                 ldap_pvt_thread_yield();
1952         }
1953
1954         if( slapd_shutdown == 1 ) {
1955                 Debug( LDAP_DEBUG_TRACE,
1956                         "daemon: shutdown requested and initiated.\n",
1957                         0, 0, 0 );
1958
1959         } else if ( slapd_shutdown == 2 ) {
1960 #ifdef HAVE_NT_SERVICE_MANAGER
1961                         Debug( LDAP_DEBUG_TRACE,
1962                                "daemon: shutdown initiated by Service Manager.\n",
1963                                0, 0, 0);
1964 #else /* !HAVE_NT_SERVICE_MANAGER */
1965                         Debug( LDAP_DEBUG_TRACE,
1966                                "daemon: abnormal condition, shutdown initiated.\n",
1967                                0, 0, 0 );
1968 #endif /* !HAVE_NT_SERVICE_MANAGER */
1969         } else {
1970                 Debug( LDAP_DEBUG_TRACE,
1971                        "daemon: no active streams, shutdown initiated.\n",
1972                        0, 0, 0 );
1973         }
1974
1975         if( slapd_gentle_shutdown != 2 ) {
1976                 close_listeners ( 0 );
1977         }
1978
1979         free ( slap_listeners );
1980         slap_listeners = NULL;
1981
1982         if( !slapd_gentle_shutdown ) {
1983                 slapd_abrupt_shutdown = 1;
1984                 connections_shutdown();
1985         }
1986
1987         Debug( LDAP_DEBUG_ANY,
1988             "slapd shutdown: waiting for %d threads to terminate\n",
1989             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1990         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1991
1992         return NULL;
1993 }
1994
1995
1996 int slapd_daemon( void )
1997 {
1998         int rc;
1999
2000         connections_init();
2001
2002 #define SLAPD_LISTENER_THREAD 1
2003 #if defined( SLAPD_LISTENER_THREAD )
2004         {
2005                 ldap_pvt_thread_t       listener_tid;
2006
2007                 /* listener as a separate THREAD */
2008                 rc = ldap_pvt_thread_create( &listener_tid,
2009                         0, slapd_daemon_task, NULL );
2010
2011                 if ( rc != 0 ) {
2012                         Debug( LDAP_DEBUG_ANY,
2013                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2014                         return rc;
2015                 }
2016
2017                 /* wait for the listener thread to complete */
2018                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
2019         }
2020 #else
2021         /* experimental code */
2022         slapd_daemon_task( NULL );
2023 #endif
2024
2025         return 0;
2026
2027 }
2028
2029 int sockinit(void)
2030 {
2031 #if defined( HAVE_WINSOCK2 )
2032     WORD wVersionRequested;
2033         WSADATA wsaData;
2034         int err;
2035
2036         wVersionRequested = MAKEWORD( 2, 0 );
2037
2038         err = WSAStartup( wVersionRequested, &wsaData );
2039         if ( err != 0 ) {
2040                 /* Tell the user that we couldn't find a usable */
2041                 /* WinSock DLL.                                  */
2042                 return -1;
2043         }
2044
2045         /* Confirm that the WinSock DLL supports 2.0.*/
2046         /* Note that if the DLL supports versions greater    */
2047         /* than 2.0 in addition to 2.0, it will still return */
2048         /* 2.0 in wVersion since that is the version we      */
2049         /* requested.                                        */
2050
2051         if ( LOBYTE( wsaData.wVersion ) != 2 ||
2052                 HIBYTE( wsaData.wVersion ) != 0 )
2053         {
2054             /* Tell the user that we couldn't find a usable */
2055             /* WinSock DLL.                                  */
2056             WSACleanup();
2057             return -1;
2058         }
2059
2060         /* The WinSock DLL is acceptable. Proceed. */
2061 #elif defined( HAVE_WINSOCK )
2062         WSADATA wsaData;
2063         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
2064             return -1;
2065         }
2066 #endif
2067         return 0;
2068 }
2069
2070 int sockdestroy(void)
2071 {
2072 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2073         WSACleanup();
2074 #endif
2075         return 0;
2076 }
2077
2078 RETSIGTYPE
2079 slap_sig_shutdown( int sig )
2080 {
2081 #if 0
2082         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2083 #endif
2084
2085         /*
2086          * If the NT Service Manager is controlling the server, we don't
2087          * want SIGBREAK to kill the server. For some strange reason,
2088          * SIGBREAK is generated when a user logs out.
2089          */
2090
2091 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2092         if (is_NT_Service && sig == SIGBREAK)
2093                 ;
2094         else
2095 #endif
2096 #ifdef SIGHUP
2097         if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0)
2098                 slapd_gentle_shutdown = 1;
2099         else
2100 #endif
2101         slapd_shutdown = 1;
2102         WAKE_LISTENER(1);
2103
2104         /* reinstall self */
2105         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2106 }
2107
2108 RETSIGTYPE
2109 slap_sig_wake( int sig )
2110 {
2111         WAKE_LISTENER(1);
2112
2113         /* reinstall self */
2114         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2115 }
2116
2117
2118 void slapd_add_internal(ber_socket_t s, int isactive) {
2119         slapd_add(s, isactive, NULL);
2120 }
2121
2122 Listener ** slapd_get_listeners(void) {
2123         return slap_listeners;
2124 }
2125
2126 void slap_wake_listener()
2127 {
2128         WAKE_LISTENER(1);
2129 }