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 #define HAVE_EPOLL      1
  44
  45 #ifdef HAVE_EPOLL
  46 #include <sys/epoll.h>
  47 #endif
  48
  49 #ifdef HAVE_TCPD
  50 #include <tcpd.h>
  51 #define SLAP_STRING_UNKNOWN     STRING_UNKNOWN
  52
  53 int allow_severity = LOG_INFO;
  54 int deny_severity = LOG_NOTICE;
  55 #else /* ! TCP Wrappers */
  56 #define SLAP_STRING_UNKNOWN     "unknown"
  57 #endif /* ! TCP Wrappers */
  58
  59 #ifdef LDAP_PF_LOCAL
  60 #include <sys/stat.h>
  61 /* this should go in <ldap.h> as soon as it is accepted */
  62 #define LDAPI_MOD_URLEXT                "x-mod"
  63 #endif /* LDAP_PF_LOCAL */
  64
  65 #ifdef LDAP_PF_INET6
  66 int slap_inet4or6 = AF_UNSPEC;
  67 #else
  68 int slap_inet4or6 = AF_INET;
  69 #endif
  70
  71 /* globals */
  72 time_t starttime;
  73 ber_socket_t dtblsize;
  74 slap_ssf_t local_ssf = LDAP_PVT_SASL_LOCAL_SSF;
  75
  76 Listener **slap_listeners = NULL;
  77
  78 #define SLAPD_LISTEN 10
  79
  80 static ber_socket_t wake_sds[2];
  81 static int emfile;
  82
  83 static int waking;
  84 #define WAKE_LISTENER(w) \
  85 do { if (w && waking < 5) { tcp_write( wake_sds[1], "0", 1 ); waking++;} } while(0)
  86
  87 volatile sig_atomic_t slapd_shutdown = 0, slapd_gentle_shutdown = 0;
  88 volatile sig_atomic_t slapd_abrupt_shutdown = 0;
  89
  90 static struct slap_daemon {
  91         ldap_pvt_thread_mutex_t sd_mutex;
  92
  93         ber_socket_t sd_nactives;
  94         int sd_nwriters;
  95
  96 #ifdef HAVE_EPOLL
  97         struct epoll_event *sd_epolls;
  98         int     sd_nepolls;
  99         int     *sd_index;
 100         int     sd_epfd;
 101         int     sd_nfds;
 102 #else
 103
 104 #ifndef HAVE_WINSOCK
 105         /* In winsock, accept() returns values higher than dtblsize
 106                 so don't bother with this optimization */
 107         int sd_nfds;
 108 #endif
 109
 110         fd_set sd_actives;
 111         fd_set sd_readers;
 112         fd_set sd_writers;
 113 #endif
 114 } slap_daemon;
 115
 116 #ifdef HAVE_EPOLL
 117 #define SLAP_EVENTS_ARE_INDEXED 0
 118 #define SLAP_SOCK_IX(s) (slap_daemon.sd_index[s])
 119 #define SLAP_SOCK_EP(s) (slap_daemon.sd_epolls[SLAP_SOCK_IX(s)])
 120 #define SLAP_SOCK_FD(s) (SLAP_SOCK_EP(s).data.fd)
 121 #define SLAP_SOCK_EV(s) (SLAP_SOCK_EP(s).events)
 122 #define SLAP_SOCK_IS_ACTIVE(s)  (SLAP_SOCK_IX(s) != -1)
 123 #define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_SOCK_IX(s) == -1)
 124 #define SLAP_SOCK_IS_SET(s, mode)       (SLAP_SOCK_EV(s) & mode)
 125
 126 #define SLAP_SOCK_IS_READ(s)    SLAP_SOCK_IS_SET(s, EPOLLIN)
 127 #define SLAP_SOCK_IS_WRITE(s)   SLAP_SOCK_IS_SET(s, EPOLLOUT)
 128
 129 #define SLAP_SET_SOCK(s, mode) do { \
 130         if ((SLAP_SOCK_EV(s) & mode) != mode) { \
 131                 SLAP_SOCK_EV(s) |= mode;        \
 132                 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, s,        \
 133                         &SLAP_SOCK_EP(s));      \
 134         }       \
 135 } while(0)
 136
 137 #define SLAP_CLR_SOCK(s, mode) do { \
 138         if ((SLAP_SOCK_EV(s) & mode)) { \
 139                 SLAP_SOCK_EV(s) &= ~mode;       \
 140                 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, s,        \
 141                         &SLAP_SOCK_EP(s));      \
 142         }       \
 143 } while(0)      \
 144
 145 #define SLAP_SOCK_SET_READ(s)   SLAP_SET_SOCK(s, EPOLLIN)
 146 #define SLAP_SOCK_SET_WRITE(s)  SLAP_SET_SOCK(s, EPOLLOUT)
 147
 148 #define SLAP_SOCK_CLR_READ(s)   SLAP_CLR_SOCK(s, EPOLLIN)
 149 #define SLAP_SOCK_CLR_WRITE(s)  SLAP_CLR_SOCK(s, EPOLLOUT)
 150
 151 #define SLAP_CLR_EVENT(i, mode) (revents[i].events &= ~mode)
 152
 153
 154 #define SLAP_EVENT_MAX  slap_daemon.sd_nfds
 155
 156 /* If a Listener address is provided, store that as the epoll data.
 157  * Otherwise, store the address of this socket's slot in the
 158  * index array.
 159  */
 160 #define SLAP_ADD_SOCK(s, l) do { \
 161         int rc; \
 162         SLAP_SOCK_IX(s) = slap_daemon.sd_nfds;  \
 163         SLAP_SOCK_EP(s).data.ptr = (l) ? (l) : (void *)(&SLAP_SOCK_IX(s)); \
 164         SLAP_SOCK_EV(s) = EPOLLIN;      \
 165         rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_ADD, s,   \
 166                         &SLAP_SOCK_EP(s));      \
 167         if ( rc == 0 ) slap_daemon.sd_nfds++;   \
 168 } while(0)
 169
 170 #define SLAP_EV_LISTENER(ptr) (((int *)(ptr) >= slap_daemon.sd_index && \
 171          (int *)(ptr) <= (slap_daemon.sd_index+dtblsize)) ? 0 : 1)
 172
 173 #define SLAP_EV_PTRFD(ptr) (SLAP_EV_LISTENER(ptr) ? \
 174          ((Listener *)ptr)->sl_sd : (int *)(ptr) - slap_daemon.sd_index)
 175
 176 #define SLAP_DEL_SOCK(s) do { \
 177         int fd, rc, index = SLAP_SOCK_IX(s); \
 178         rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_DEL, s,   \
 179                         &SLAP_SOCK_EP(s));      \
 180         slap_daemon.sd_epolls[index] = slap_daemon.sd_epolls[slap_daemon.sd_nfds-1];    \
 181         fd = SLAP_EV_PTRFD(slap_daemon.sd_epolls[index].data.ptr);      \
 182         slap_daemon.sd_index[fd] = index;       \
 183         slap_daemon.sd_index[s] = -1;   \
 184         slap_daemon.sd_nfds--;  \
 185 } while(0)
 186
 187 #define SLAP_EVENT_CLR_READ(i)  SLAP_CLR_EVENT(i, EPOLLIN)
 188 #define SLAP_EVENT_CLR_WRITE(i) SLAP_CLR_EVENT(i, EPOLLOUT)
 189
 190 #define SLAP_CHK_EVENT(i, mode) (revents[i].events & mode)
 191
 192 #define SLAP_EVENT_IS_READ(i)   SLAP_CHK_EVENT(i, EPOLLIN)
 193 #define SLAP_EVENT_IS_WRITE(i)  SLAP_CHK_EVENT(i, EPOLLOUT)
 194 #define SLAP_EVENT_IS_LISTENER(i)       SLAP_EV_LISTENER(revents[i].data.ptr)
 195 #define SLAP_EVENT_LISTENER(i)  (revents[i].data.ptr)
 196
 197 #define SLAP_EVENT_FD(i)        SLAP_EV_PTRFD(revents[i].data.ptr)
 198 #define SLAP_SOCK_SET_MUTE(s)   SLAP_SOCK_CLR_READ(s)
 199 #define SLAP_SOCK_CLR_MUTE(s)   SLAP_SOCK_SET_READ(s)
 200 #define SLAP_SOCK_IS_MUTE(s)    !SLAP_SOCK_IS_READ(s)
 201
 202 #define SLAP_SOCK_SET_INIT      \
 203         slap_daemon.sd_epolls = ch_malloc(sizeof(struct epoll_event) * dtblsize * 2);   \
 204         slap_daemon.sd_index = ch_malloc(sizeof(int) * dtblsize);       \
 205         slap_daemon.sd_epfd = epoll_create( dtblsize ); \
 206         for (i=0; i<dtblsize; i++) slap_daemon.sd_index[i] = -1
 207
 208
 209 #define SLAP_EVENT_DECL \
 210         struct epoll_event *revents
 211
 212 #define SLAP_EVENT_INIT \
 213         revents = slap_daemon.sd_epolls + dtblsize;     \
 214
 215 #define SLAP_EVENT_WAIT(tvp)    \
 216         epoll_wait( slap_daemon.sd_epfd, revents, dtblsize, tvp ? tvp->tv_sec * 1000 : -1 )
 217
 218 #else
 219
 220 /* select */
 221 #define SLAP_EVENTS_ARE_INDEXED 1
 222 #define SLAP_EVENT_DECL \
 223         fd_set readfds, writefds
 224
 225 #define SLAP_EVENT_INIT \
 226         AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) ); \
 227         if ( nwriters ) \
 228                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
 229
 230 #ifdef FD_SETSIZE
 231 #define CHK_SETSIZE     \
 232         if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE
 233 #else
 234 #define CHK_SETSIZE
 235 #endif
 236
 237 #define SLAP_SOCK_SET_INIT      \
 238         CHK_SETSIZE;    \
 239         FD_ZERO(&slap_daemon.sd_readers);       \
 240         FD_ZERO(&slap_daemon.sd_writers)
 241
 242 #define SLAP_SOCK_IS_ACTIVE(fd) FD_ISSET(fd, &slap_daemon.sd_actives)
 243
 244 #define SLAP_SOCK_IS_READ(fd)   FD_ISSET(fd, &slap_daemon.sd_readers)
 245 #define SLAP_SOCK_IS_WRITE(fd)  FD_ISSET(fd, &slap_daemon.sd_writers)
 246
 247 #define SLAP_SOCK_NOT_ACTIVE(fd)        (!SLAP_SOCK_IS_ACTIVE(fd) && \
 248          !SLAP_SOCK_IS_READ(fd) && !SLAP_SOCK_IS_WRITE(fd))
 249
 250 #ifdef HAVE_WINSOCK
 251 #define SLAP_SOCK_SET_READ(fd)  do { \
 252         if (!SLAP_SOCK_IS_READ(fd)) {FD_SET(fd, &slap_daemon.sd_readers);}      \
 253 } while(0)
 254 #define SLAP_SOCK_SET_WRITE(fd) do { \
 255         if (!SLAP_SOCK_IS_WRITE(fd)) {FD_SET(fd, &slap_daemon.sd_writers);}     \
 256 } while(0)
 257
 258 #define SLAP_ADDTEST(s)
 259 #define SLAP_EVENT_MAX  dtblsize
 260 #else
 261 #define SLAP_SOCK_SET_READ(fd)  FD_SET(fd, &slap_daemon.sd_readers)
 262 #define SLAP_SOCK_SET_WRITE(fd) FD_SET(fd, &slap_daemon.sd_writers)
 263
 264 #define SLAP_EVENT_MAX  slap_daemon.sd_nfds
 265 #define SLAP_ADDTEST(s) if (s >= slap_daemon.sd_nfds) slap_daemon.sd_nfds = s+1
 266 #endif
 267
 268 #define SLAP_SOCK_CLR_READ(fd)  FD_CLR(fd, &slap_daemon.sd_readers)
 269 #define SLAP_SOCK_CLR_WRITE(fd) FD_CLR(fd, &slap_daemon.sd_writers)
 270
 271 #define SLAP_ADD_SOCK(s, l) do {        \
 272         SLAP_ADDTEST(s);        \
 273         FD_SET(s, &slap_daemon.sd_actives);     \
 274         FD_SET(s, &slap_daemon.sd_readers);     \
 275 } while(0)
 276
 277 #define SLAP_DEL_SOCK(s) do {   \
 278         FD_CLR(s, &slap_daemon.sd_actives);     \
 279         FD_CLR(s, &slap_daemon.sd_readers);     \
 280         FD_CLR(s, &slap_daemon.sd_writers);     \
 281 } while(0)
 282
 283 #define SLAP_EVENT_IS_READ(fd)  FD_ISSET(fd, &readfds)
 284 #define SLAP_EVENT_IS_WRITE(fd) FD_ISSET(fd, &writefds)
 285
 286 #define SLAP_EVENT_CLR_READ(fd) FD_CLR(fd, &readfds)
 287 #define SLAP_EVENT_CLR_WRITE(fd)        FD_CLR(fd, &writefds)
 288
 289 #define SLAP_EVENT_WAIT(tvp)    \
 290         select( SLAP_EVENT_MAX, &readfds,       \
 291                 nwriters > 0 ? &writefds : NULL, NULL, tvp )
 292
 293 #define SLAP_SOCK_SET_MUTE(s)   FD_CLR(s, &readfds)
 294 #define SLAP_SOCK_CLR_MUTE(s)   FD_SET(s, &readfds)
 295 #define SLAP_SOCK_IS_MUTE(s)    FD_ISSET(s, &readfds)
 296
 297 #endif
 298
 299
 300 #ifdef HAVE_SLP
 301 /*
 302  * SLP related functions
 303  */
 304 #include <slp.h>
 305
 306 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
 307 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
 308 static char** slapd_srvurls = NULL;
 309 static SLPHandle slapd_hslp = 0;
 310 int slapd_register_slp = 0;
 311
 312 void slapd_slp_init( const char* urls ) {
 313         int i;
 314
 315         slapd_srvurls = ldap_str2charray( urls, " " );
 316
 317         if( slapd_srvurls == NULL ) return;
 318
 319         /* find and expand INADDR_ANY URLs */
 320         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 321                 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
 322                         char *host = ldap_pvt_get_fqdn( NULL );
 323                         if ( host != NULL ) {
 324                                 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 325                                         strlen( host ) +
 326                                         sizeof( LDAP_SRVTYPE_PREFIX ) );
 327                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 328                                         LDAP_SRVTYPE_PREFIX ), host );
 329
 330                                 ch_free( host );
 331                         }
 332
 333                 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
 334                         char *host = ldap_pvt_get_fqdn( NULL );
 335                         if ( host != NULL ) {
 336                                 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 337                                         strlen( host ) +
 338                                         sizeof( LDAPS_SRVTYPE_PREFIX ) );
 339                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 340                                         LDAPS_SRVTYPE_PREFIX ), host );
 341
 342                                 ch_free( host );
 343                         }
 344                 }
 345         }
 346
 347         /* open the SLP handle */
 348         SLPOpen( "en", 0, &slapd_hslp );
 349 }
 350
 351 void slapd_slp_deinit() {
 352         if( slapd_srvurls == NULL ) return;
 353
 354         ldap_charray_free( slapd_srvurls );
 355         slapd_srvurls = NULL;
 356
 357         /* close the SLP handle */
 358         SLPClose( slapd_hslp );
 359 }
 360
 361 void slapd_slp_regreport(
 362         SLPHandle hslp,
 363         SLPError errcode,
 364         void* cookie )
 365 {
 366         /* empty report */
 367 }
 368
 369 void slapd_slp_reg() {
 370         int i;
 371
 372         if( slapd_srvurls == NULL ) return;
 373
 374         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 375                 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
 376                                 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
 377                     strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
 378                                 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
 379                 {
 380                         SLPReg( slapd_hslp,
 381                                 slapd_srvurls[i],
 382                                 SLP_LIFETIME_MAXIMUM,
 383                                 "ldap",
 384                                 "",
 385                                 1,
 386                                 slapd_slp_regreport,
 387                                 NULL );
 388                 }
 389         }
 390 }
 391
 392 void slapd_slp_dereg() {
 393         int i;
 394
 395         if( slapd_srvurls == NULL ) return;
 396
 397         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 398                 SLPDereg( slapd_hslp,
 399                         slapd_srvurls[i],
 400                         slapd_slp_regreport,
 401                         NULL );
 402         }
 403 }
 404 #endif /* HAVE_SLP */
 405
 406 /*
 407  * Add a descriptor to daemon control
 408  *
 409  * If isactive, the descriptor is a live server session and is subject
 410  * to idletimeout control. Otherwise, the descriptor is a passive
 411  * listener or an outbound client session, and not subject to
 412  * idletimeout. The underlying event handler may record the Listener
 413  * argument to differentiate Listener's from real sessions.
 414  */
 415 static void slapd_add(ber_socket_t s, int isactive, Listener *sl) {
 416         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 417
 418         assert( SLAP_SOCK_NOT_ACTIVE(s) );
 419
 420         if ( isactive ) {
 421                 slap_daemon.sd_nactives++;
 422         }
 423
 424         SLAP_ADD_SOCK(s, sl);
 425
 426         Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr\n",
 427                 (long) s, 0, 0 );
 428         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 429 }
 430
 431 /*
 432  * Remove the descriptor from daemon control
 433  */
 434 void slapd_remove(ber_socket_t s, int wasactive, int wake) {
 435         int waswriter;
 436         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 437
 438         if ( wasactive ) {
 439                 slap_daemon.sd_nactives--;
 440         }
 441         waswriter = SLAP_SOCK_IS_WRITE(s);
 442
 443         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 444                 (long) s, SLAP_SOCK_IS_READ(s) ? "r" : "",
 445                 waswriter ? "w" : "" );
 446         if ( waswriter ) slap_daemon.sd_nwriters--;
 447
 448         SLAP_DEL_SOCK(s);
 449
 450         /* If we ran out of file descriptors, we dropped a listener from
 451          * the select() loop. Now that we're removing a session from our
 452          * control, we can try to resume a dropped listener to use.
 453          */
 454         if ( emfile ) {
 455                 int i;
 456                 for ( i = 0; slap_listeners[i] != NULL; i++ ) {
 457                         if ( slap_listeners[i]->sl_sd != AC_SOCKET_INVALID ) {
 458                                 if ( slap_listeners[i]->sl_sd == s ) continue;
 459                                 if ( slap_listeners[i]->sl_is_mute ) {
 460                                         slap_listeners[i]->sl_is_mute = 0;
 461                                         emfile--;
 462                                         break;
 463                                 }
 464                         }
 465                 }
 466                 /* Walked the entire list without enabling anything; emfile
 467                  * counter is stale. Reset it.
 468                  */
 469                 if ( slap_listeners[i] == NULL )
 470                         emfile = 0;
 471         }
 472         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 473         WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
 474 }
 475
 476 void slapd_clr_write(ber_socket_t s, int wake) {
 477         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 478
 479         assert( SLAP_SOCK_IS_ACTIVE( s ));
 480         if ( SLAP_SOCK_IS_WRITE( s )) {
 481                 SLAP_SOCK_CLR_WRITE( s );
 482                 slap_daemon.sd_nwriters--;
 483         }
 484
 485         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 486         WAKE_LISTENER(wake);
 487 }
 488
 489 void slapd_set_write(ber_socket_t s, int wake) {
 490         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 491
 492         assert( SLAP_SOCK_IS_ACTIVE( s ));
 493         if ( !SLAP_SOCK_IS_WRITE( s )) {
 494                 SLAP_SOCK_SET_WRITE( s );
 495                 slap_daemon.sd_nwriters++;
 496         }
 497
 498         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 499         WAKE_LISTENER(wake);
 500 }
 501
 502 void slapd_clr_read(ber_socket_t s, int wake) {
 503         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 504
 505         assert( SLAP_SOCK_IS_ACTIVE( s ));
 506         SLAP_SOCK_CLR_READ( s );
 507
 508         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 509         WAKE_LISTENER(wake);
 510 }
 511
 512 void slapd_set_read(ber_socket_t s, int wake) {
 513         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 514
 515         assert( SLAP_SOCK_IS_ACTIVE( s ));
 516         if (!SLAP_SOCK_IS_READ( s ))
 517                 SLAP_SOCK_SET_READ( s );
 518
 519         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 520         WAKE_LISTENER(wake);
 521 }
 522
 523 static void slapd_close(ber_socket_t s) {
 524         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 525                 (long) s, 0, 0 );
 526         tcp_close(s);
 527 }
 528
 529 static void slap_free_listener_addresses(struct sockaddr **sal)
 530 {
 531         struct sockaddr **sap;
 532
 533         if (sal == NULL) {
 534                 return;
 535         }
 536
 537         for (sap = sal; *sap != NULL; sap++) {
 538                 ch_free(*sap);
 539         }
 540
 541         ch_free(sal);
 542 }
 543
 544 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 545 static int get_url_perms(
 546         char    **exts,
 547         mode_t  *perms,
 548         int     *crit )
 549 {
 550         int     i;
 551
 552         assert( exts );
 553         assert( perms );
 554         assert( crit );
 555
 556         *crit = 0;
 557         for ( i = 0; exts[ i ]; i++ ) {
 558                 char    *type = exts[ i ];
 559                 int     c = 0;
 560
 561                 if ( type[ 0 ] == '!' ) {
 562                         c = 1;
 563                         type++;
 564                 }
 565
 566                 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=", sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 ) {
 567                         char    *value = type
 568                                 + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
 569                         mode_t  p = 0;
 570                         int     j;
 571
 572                         switch (strlen(value)) {
 573                         case 4:
 574                                 /* skip leading '0' */
 575                                 if ( value[ 0 ] != '0' ) {
 576                                         return LDAP_OTHER;
 577                                 }
 578                                 value++;
 579
 580                         case 3:
 581                                 for ( j = 0; j < 3; j++) {
 582                                         int     v;
 583
 584                                         v = value[ j ] - '0';
 585
 586                                         if ( v < 0 || v > 7 ) {
 587                                                 return LDAP_OTHER;
 588                                         }
 589
 590                                         p |= v << 3*(2-j);
 591                                 }
 592                                 break;
 593
 594                         case 10:
 595                                 for ( j = 1; j < 10; j++ ) {
 596                                         static mode_t   m[] = { 0,
 597                                                 S_IRUSR, S_IWUSR, S_IXUSR,
 598                                                 S_IRGRP, S_IWGRP, S_IXGRP,
 599                                                 S_IROTH, S_IWOTH, S_IXOTH
 600                                         };
 601                                         static char     c[] = "-rwxrwxrwx";
 602
 603                                         if ( value[ j ] == c[ j ] ) {
 604                                                 p |= m[ j ];
 605
 606                                         } else if ( value[ j ] != '-' ) {
 607                                                 return LDAP_OTHER;
 608                                         }
 609                                 }
 610                                 break;
 611
 612                         default:
 613                                 return LDAP_OTHER;
 614                         }
 615
 616                         *crit = c;
 617                         *perms = p;
 618
 619                         return LDAP_SUCCESS;
 620                 }
 621         }
 622
 623         return LDAP_OTHER;
 624 }
 625 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 626
 627 /* port = 0 indicates AF_LOCAL */
 628 static int slap_get_listener_addresses(
 629         const char *host,
 630         unsigned short port,
 631         struct sockaddr ***sal)
 632 {
 633         struct sockaddr **sap;
 634
 635 #ifdef LDAP_PF_LOCAL
 636         if ( port == 0 ) {
 637                 *sal = ch_malloc(2 * sizeof(void *));
 638                 if (*sal == NULL) {
 639                         return -1;
 640                 }
 641
 642                 sap = *sal;
 643                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 644                 if (*sap == NULL)
 645                         goto errexit;
 646                 sap[1] = NULL;
 647
 648                 if ( strlen(host) >
 649                      (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 650                         Debug( LDAP_DEBUG_ANY,
 651                                "daemon: domain socket path (%s) too long in URL",
 652                                host, 0, 0);
 653                         goto errexit;
 654                 }
 655
 656                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 657                 (*sap)->sa_family = AF_LOCAL;
 658                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 659         } else
 660 #endif
 661         {
 662 #ifdef HAVE_GETADDRINFO
 663                 struct addrinfo hints, *res, *sai;
 664                 int n, err;
 665                 char serv[7];
 666
 667                 memset( &hints, '\0', sizeof(hints) );
 668                 hints.ai_flags = AI_PASSIVE;
 669                 hints.ai_socktype = SOCK_STREAM;
 670                 hints.ai_family = slap_inet4or6;
 671                 snprintf(serv, sizeof serv, "%d", port);
 672
 673                 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
 674                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 675                                 AC_GAI_STRERROR(err), 0, 0);
 676                         return -1;
 677                 }
 678
 679                 sai = res;
 680                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
 681                         /* EMPTY */ ;
 682                 }
 683                 *sal = ch_calloc(n, sizeof(void *));
 684                 if (*sal == NULL) {
 685                         return -1;
 686                 }
 687
 688                 sap = *sal;
 689                 *sap = NULL;
 690
 691                 for ( sai=res; sai; sai=sai->ai_next ) {
 692                         if( sai->ai_addr == NULL ) {
 693                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
 694                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 695                                 freeaddrinfo(res);
 696                                 goto errexit;
 697                         }
 698
 699                         switch (sai->ai_family) {
 700 #  ifdef LDAP_PF_INET6
 701                         case AF_INET6:
 702                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 703                                 if (*sap == NULL) {
 704                                         freeaddrinfo(res);
 705                                         goto errexit;
 706                                 }
 707                                 *(struct sockaddr_in6 *)*sap =
 708                                         *((struct sockaddr_in6 *)sai->ai_addr);
 709                                 break;
 710 #  endif
 711                         case AF_INET:
 712                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 713                                 if (*sap == NULL) {
 714                                         freeaddrinfo(res);
 715                                         goto errexit;
 716                                 }
 717                                 *(struct sockaddr_in *)*sap =
 718                                         *((struct sockaddr_in *)sai->ai_addr);
 719                                 break;
 720                         default:
 721                                 *sap = NULL;
 722                                 break;
 723                         }
 724
 725                         if (*sap != NULL) {
 726                                 (*sap)->sa_family = sai->ai_family;
 727                                 sap++;
 728                                 *sap = NULL;
 729                         }
 730                 }
 731
 732                 freeaddrinfo(res);
 733 #else
 734                 int i, n = 1;
 735                 struct in_addr in;
 736                 struct hostent *he = NULL;
 737
 738                 if ( host == NULL ) {
 739                         in.s_addr = htonl(INADDR_ANY);
 740
 741                 } else if ( !inet_aton( host, &in ) ) {
 742                         he = gethostbyname( host );
 743                         if( he == NULL ) {
 744                                 Debug( LDAP_DEBUG_ANY,
 745                                        "daemon: invalid host %s", host, 0, 0);
 746                                 return -1;
 747                         }
 748                         for (n = 0; he->h_addr_list[n]; n++) ;
 749                 }
 750
 751                 *sal = ch_malloc((n+1) * sizeof(void *));
 752                 if (*sal == NULL) {
 753                         return -1;
 754                 }
 755
 756                 sap = *sal;
 757                 for ( i = 0; i<n; i++ ) {
 758                         sap[i] = ch_malloc(sizeof(struct sockaddr_in));
 759                         if (*sap == NULL) {
 760                                 goto errexit;
 761                         }
 762                         (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
 763                         sap[i]->sa_family = AF_INET;
 764                         ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
 765                         if (he) {
 766                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, he->h_addr_list[i], sizeof(struct in_addr) );
 767                         } else {
 768                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, &in, sizeof(struct in_addr) );
 769                         }
 770                 }
 771                 sap[i] = NULL;
 772 #endif
 773         }
 774
 775         return 0;
 776
 777 errexit:
 778         slap_free_listener_addresses(*sal);
 779         return -1;
 780 }
 781
 782 static int slap_open_listener(
 783         const char* url,
 784         int *listeners,
 785         int *cur
 786         )
 787 {
 788         int     num, tmp, rc;
 789         Listener l;
 790         Listener *li;
 791         LDAPURLDesc *lud;
 792         unsigned short port;
 793         int err, addrlen = 0;
 794         struct sockaddr **sal, **psal;
 795         int socktype = SOCK_STREAM;     /* default to COTS */
 796
 797 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 798         /*
 799          * use safe defaults
 800          */
 801         int     crit = 1;
 802 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 803
 804         rc = ldap_url_parse( url, &lud );
 805
 806         if( rc != LDAP_URL_SUCCESS ) {
 807                 Debug( LDAP_DEBUG_ANY,
 808                         "daemon: listen URL \"%s\" parse error=%d\n",
 809                         url, rc, 0 );
 810                 return rc;
 811         }
 812
 813         l.sl_url.bv_val = NULL;
 814         l.sl_is_mute = 0;
 815
 816 #ifndef HAVE_TLS
 817         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 818                 Debug( LDAP_DEBUG_ANY,
 819                         "daemon: TLS not supported (%s)\n",
 820                         url, 0, 0 );
 821                 ldap_free_urldesc( lud );
 822                 return -1;
 823         }
 824
 825         if(! lud->lud_port ) {
 826                 lud->lud_port = LDAP_PORT;
 827         }
 828
 829 #else
 830         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 831
 832         if(! lud->lud_port ) {
 833                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 834         }
 835 #endif
 836
 837         port = (unsigned short) lud->lud_port;
 838
 839         tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
 840         if ( tmp == LDAP_PROTO_IPC ) {
 841 #ifdef LDAP_PF_LOCAL
 842                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 843                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 844                 } else {
 845                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 846                 }
 847 #else
 848
 849                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 850                         url, 0, 0);
 851                 ldap_free_urldesc( lud );
 852                 return -1;
 853 #endif
 854         } else {
 855                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 856                         || strcmp(lud->lud_host, "*") == 0 )
 857                 {
 858                         err = slap_get_listener_addresses(NULL, port, &sal);
 859                 } else {
 860                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 861                 }
 862         }
 863 #ifdef LDAP_CONNECTIONLESS
 864         l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
 865 #endif
 866
 867 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 868         if ( lud->lud_exts ) {
 869                 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
 870         } else {
 871                 l.sl_perms = S_IRWXU | S_IRWXO;
 872         }
 873 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 874
 875         ldap_free_urldesc( lud );
 876         if ( err ) {
 877                 return -1;
 878         }
 879
 880         /* If we got more than one address returned, we need to make space
 881          * for it in the slap_listeners array.
 882          */
 883         for ( num=0; sal[num]; num++ );
 884         if ( num > 1 ) {
 885                 *listeners += num-1;
 886                 slap_listeners = ch_realloc( slap_listeners, (*listeners + 1) * sizeof(Listener *) );
 887         }
 888
 889         psal = sal;
 890         while ( *sal != NULL ) {
 891                 char *af;
 892                 switch( (*sal)->sa_family ) {
 893                 case AF_INET:
 894                         af = "IPv4";
 895                         break;
 896 #ifdef LDAP_PF_INET6
 897                 case AF_INET6:
 898                         af = "IPv6";
 899                         break;
 900 #endif
 901 #ifdef LDAP_PF_LOCAL
 902                 case AF_LOCAL:
 903                         af = "Local";
 904                         break;
 905 #endif
 906                 default:
 907                         sal++;
 908                         continue;
 909                 }
 910 #ifdef LDAP_CONNECTIONLESS
 911                 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
 912 #endif
 913                 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
 914                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 915                         int err = sock_errno();
 916                         Debug( LDAP_DEBUG_ANY,
 917                                 "daemon: %s socket() failed errno=%d (%s)\n",
 918                                 af, err, sock_errstr(err) );
 919                         sal++;
 920                         continue;
 921                 }
 922 #ifndef HAVE_WINSOCK
 923                 if ( l.sl_sd >= dtblsize ) {
 924                         Debug( LDAP_DEBUG_ANY,
 925                                 "daemon: listener descriptor %ld is too great %ld\n",
 926                                 (long) l.sl_sd, (long) dtblsize, 0 );
 927                         tcp_close( l.sl_sd );
 928                         sal++;
 929                         continue;
 930                 }
 931 #endif
 932 #ifdef LDAP_PF_LOCAL
 933                 if ( (*sal)->sa_family == AF_LOCAL ) {
 934                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 935                 } else
 936 #endif
 937                 {
 938 #ifdef SO_REUSEADDR
 939                         /* enable address reuse */
 940                         tmp = 1;
 941                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 942                                 (char *) &tmp, sizeof(tmp) );
 943                         if ( rc == AC_SOCKET_ERROR ) {
 944                                 int err = sock_errno();
 945                                 Debug( LDAP_DEBUG_ANY,
 946                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 947                                        (long) l.sl_sd, err, sock_errstr(err) );
 948                         }
 949 #endif
 950                 }
 951
 952                 switch( (*sal)->sa_family ) {
 953                 case AF_INET:
 954                         addrlen = sizeof(struct sockaddr_in);
 955                         break;
 956 #ifdef LDAP_PF_INET6
 957                 case AF_INET6:
 958 #ifdef IPV6_V6ONLY
 959                         /* Try to use IPv6 sockets for IPv6 only */
 960                         tmp = 1;
 961                         rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
 962                                          (char *) &tmp, sizeof(tmp) );
 963                         if ( rc == AC_SOCKET_ERROR ) {
 964                                 int err = sock_errno();
 965                                 Debug( LDAP_DEBUG_ANY,
 966                                        "slapd(%ld): setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
 967                                        (long) l.sl_sd, err, sock_errstr(err) );
 968                         }
 969 #endif
 970                         addrlen = sizeof(struct sockaddr_in6);
 971                         break;
 972 #endif
 973 #ifdef LDAP_PF_LOCAL
 974                 case AF_LOCAL:
 975                         addrlen = sizeof(struct sockaddr_un);
 976                         break;
 977 #endif
 978                 }
 979
 980                 if (bind(l.sl_sd, *sal, addrlen)) {
 981                         err = sock_errno();
 982                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 983                        (long) l.sl_sd, err, sock_errstr(err) );
 984                         tcp_close( l.sl_sd );
 985                         sal++;
 986                         continue;
 987                 }
 988
 989         switch ( (*sal)->sa_family ) {
 990 #ifdef LDAP_PF_LOCAL
 991         case AF_LOCAL: {
 992                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 993 #if 0 /* don't muck with socket perms */
 994                 if ( chmod( addr, l.sl_perms ) < 0 && crit ) {
 995                         int err = sock_errno();
 996                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 997                                (long) l.sl_sd, err, sock_errstr(err) );
 998                         tcp_close( l.sl_sd );
 999                         slap_free_listener_addresses(psal);
1000                         return -1;
1001                 }
1002 #endif
1003                 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
1004                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
1005                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
1006                                 "PATH=%s", addr );
1007         } break;
1008 #endif /* LDAP_PF_LOCAL */
1009
1010         case AF_INET: {
1011                 char *s;
1012 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1013                 char addr[INET_ADDRSTRLEN];
1014                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
1015                            addr, sizeof(addr) );
1016                 s = addr;
1017 #else
1018                 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
1019 #endif
1020                 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
1021                 l.sl_name.bv_val = ber_memalloc( sizeof("IP=255.255.255.255:65535") );
1022                 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
1023                         "IP=%s:%d",
1024                          s != NULL ? s : SLAP_STRING_UNKNOWN, port );
1025                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1026         } break;
1027
1028 #ifdef LDAP_PF_INET6
1029         case AF_INET6: {
1030                 char addr[INET6_ADDRSTRLEN];
1031                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
1032                            addr, sizeof addr);
1033                 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
1034                 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
1035                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
1036                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
1037                                 addr, port );
1038                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1039         } break;
1040 #endif /* LDAP_PF_INET6 */
1041
1042         default:
1043                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
1044                         (int) (*sal)->sa_family, 0, 0 );
1045                 break;
1046         }
1047
1048         AC_MEMCPY(&l.sl_sa, *sal, addrlen);
1049         ber_str2bv( url, 0, 1, &l.sl_url);
1050         li = ch_malloc( sizeof( Listener ) );
1051         *li = l;
1052         slap_listeners[*cur] = li;
1053         (*cur)++;
1054         sal++;
1055
1056         } /* while ( *sal != NULL ) */
1057
1058         slap_free_listener_addresses(psal);
1059
1060         if ( l.sl_url.bv_val == NULL )
1061         {
1062                 Debug( LDAP_DEBUG_TRACE,
1063                         "slap_open_listener: failed on %s\n", url, 0, 0 );
1064                 return -1;
1065         }
1066
1067         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
1068                 l.sl_url.bv_val, 0, 0 );
1069         return 0;
1070 }
1071
1072 static int sockinit(void);
1073 static int sockdestroy(void);
1074
1075 int slapd_daemon_init( const char *urls )
1076 {
1077         int i, j, n, rc;
1078         char **u;
1079
1080         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
1081                 urls ? urls : "<null>", 0, 0 );
1082         if( (rc = sockinit()) != 0 ) {
1083                 return rc;
1084         }
1085
1086 #ifdef HAVE_SYSCONF
1087         dtblsize = sysconf( _SC_OPEN_MAX );
1088 #elif HAVE_GETDTABLESIZE
1089         dtblsize = getdtablesize();
1090 #else
1091         dtblsize = FD_SETSIZE;
1092 #endif
1093
1094         /* open a pipe (or something equivalent connected to itself).
1095          * we write a byte on this fd whenever we catch a signal. The main
1096          * loop will be select'ing on this socket, and will wake up when
1097          * this byte arrives.
1098          */
1099         if( (rc = lutil_pair( wake_sds )) < 0 ) {
1100                 Debug( LDAP_DEBUG_ANY,
1101                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
1102                 return rc;
1103         }
1104
1105         SLAP_SOCK_SET_INIT;
1106
1107         if( urls == NULL ) {
1108                 urls = "ldap:///";
1109         }
1110
1111         u = ldap_str2charray( urls, " " );
1112
1113         if( u == NULL || u[0] == NULL ) {
1114                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1115                         urls, 0, 0 );
1116                 return -1;
1117         }
1118
1119         for( i=0; u[i] != NULL; i++ ) {
1120                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1121                         u[i], 0, 0 );
1122         }
1123
1124         if( i == 0 ) {
1125                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1126                         urls, 0, 0 );
1127                 ldap_charray_free( u );
1128                 return -1;
1129         }
1130
1131         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1132                 i, 0, 0 );
1133         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1134
1135         for(n = 0, j = 0; u[n]; n++ ) {
1136                 if ( slap_open_listener( u[n], &i, &j ) ) {
1137                         ldap_charray_free( u );
1138                         return -1;
1139                 }
1140         }
1141         slap_listeners[j] = NULL;
1142
1143         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1144                 i, 0, 0 );
1145
1146 #ifdef HAVE_SLP
1147         if( slapd_register_slp ) {
1148                 slapd_slp_init( urls );
1149                 slapd_slp_reg();
1150         }
1151 #endif
1152
1153         ldap_charray_free( u );
1154         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1155         return !i;
1156 }
1157
1158
1159 int
1160 slapd_daemon_destroy(void)
1161 {
1162         connections_destroy();
1163         tcp_close( wake_sds[1] );
1164         tcp_close( wake_sds[0] );
1165         sockdestroy();
1166
1167 #ifdef HAVE_SLP
1168         if( slapd_register_slp ) {
1169                 slapd_slp_dereg();
1170                 slapd_slp_deinit();
1171         }
1172 #endif
1173
1174         return 0;
1175 }
1176
1177
1178 static void
1179 close_listeners(
1180         int remove
1181 )
1182 {
1183         int l;
1184
1185         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1186                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1187                         if ( remove )
1188                                 slapd_remove( slap_listeners[l]->sl_sd, 0, 0 );
1189 #ifdef LDAP_PF_LOCAL
1190                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1191                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1192                         }
1193 #endif /* LDAP_PF_LOCAL */
1194                         slapd_close( slap_listeners[l]->sl_sd );
1195                 }
1196                 if ( slap_listeners[l]->sl_url.bv_val )
1197                         ber_memfree( slap_listeners[l]->sl_url.bv_val );
1198                 if ( slap_listeners[l]->sl_name.bv_val )
1199                         ber_memfree( slap_listeners[l]->sl_name.bv_val );
1200                 free ( slap_listeners[l] );
1201                 slap_listeners[l] = NULL;
1202         }
1203 }
1204
1205 static int
1206 slapd_handle_listener(
1207         Listener *sl
1208 )
1209 {
1210         Sockaddr                from;
1211
1212         ber_socket_t s;
1213         socklen_t len = sizeof(from);
1214         long id;
1215         slap_ssf_t ssf = 0;
1216         struct berval authid = BER_BVNULL;
1217 #ifdef SLAPD_RLOOKUPS
1218         char hbuf[NI_MAXHOST];
1219 #endif
1220
1221         char    *dnsname = NULL;
1222         char    *peeraddr = NULL;
1223 #ifdef LDAP_PF_LOCAL
1224         char peername[MAXPATHLEN + sizeof("PATH=")];
1225 #elif defined(LDAP_PF_INET6)
1226         char peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1227 #else
1228         char peername[sizeof("IP=255.255.255.255:65336")];
1229 #endif /* LDAP_PF_LOCAL */
1230
1231         peername[0] = '\0';
1232
1233 #ifdef LDAP_CONNECTIONLESS
1234         if ( sl->sl_is_udp ) {
1235                 /* The first time we receive a query, we set this
1236                  * up as a "connection". It remains open for the life
1237                  * of the slapd.
1238                  */
1239                 if ( sl->sl_is_udp < 2 ) {
1240                         id = connection_init( sl->sl_sd, sl, "", "",
1241                                 CONN_IS_UDP, ssf, NULL );
1242                     sl->sl_is_udp++;
1243                 }
1244                 return 1;
1245         }
1246 #endif
1247
1248 #  ifdef LDAP_PF_LOCAL
1249         /* FIXME: apparently accept doesn't fill
1250          * the sun_path sun_path member */
1251         from.sa_un_addr.sun_path[0] = '\0';
1252 #  endif /* LDAP_PF_LOCAL */
1253
1254         s = accept( sl->sl_sd, (struct sockaddr *) &from, &len );
1255         if ( s == AC_SOCKET_INVALID ) {
1256                 int err = sock_errno();
1257
1258                 if(
1259 #ifdef EMFILE
1260                     err == EMFILE ||
1261 #endif
1262 #ifdef ENFILE
1263                     err == ENFILE ||
1264 #endif
1265                     0 )
1266                 {
1267                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1268                         emfile++;
1269                         /* Stop listening until an existing session closes */
1270                         sl->sl_is_mute = 1;
1271                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1272                 }
1273
1274                 Debug( LDAP_DEBUG_ANY,
1275                         "daemon: accept(%ld) failed errno=%d (%s)\n",
1276                         (long) sl->sl_sd, err,
1277                         sock_errstr(err) );
1278                 ldap_pvt_thread_yield();
1279                 return 0;
1280         }
1281
1282 #ifndef HAVE_WINSOCK
1283         /* make sure descriptor number isn't too great */
1284         if ( s >= dtblsize ) {
1285                 Debug( LDAP_DEBUG_ANY,
1286                         "daemon: %ld beyond descriptor table size %ld\n",
1287                         (long) s, (long) dtblsize, 0 );
1288
1289                 slapd_close(s);
1290                 ldap_pvt_thread_yield();
1291                 return 0;
1292         }
1293 #endif
1294
1295 #ifdef LDAP_DEBUG
1296         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1297
1298         /* newly accepted stream should not be in any of the FD SETS */
1299         assert( SLAP_SOCK_NOT_ACTIVE( s ));
1300
1301         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1302 #endif
1303
1304 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1305 #ifdef LDAP_PF_LOCAL
1306         /* for IPv4 and IPv6 sockets only */
1307         if ( from.sa_addr.sa_family != AF_LOCAL )
1308 #endif /* LDAP_PF_LOCAL */
1309         {
1310                 int rc;
1311                 int tmp;
1312 #ifdef SO_KEEPALIVE
1313                 /* enable keep alives */
1314                 tmp = 1;
1315                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1316                         (char *) &tmp, sizeof(tmp) );
1317                 if ( rc == AC_SOCKET_ERROR ) {
1318                         int err = sock_errno();
1319                         Debug( LDAP_DEBUG_ANY,
1320                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1321                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1322                 }
1323 #endif
1324 #ifdef TCP_NODELAY
1325                 /* enable no delay */
1326                 tmp = 1;
1327                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1328                         (char *)&tmp, sizeof(tmp) );
1329                 if ( rc == AC_SOCKET_ERROR ) {
1330                         int err = sock_errno();
1331                         Debug( LDAP_DEBUG_ANY,
1332                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1333                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1334                 }
1335 #endif
1336         }
1337 #endif
1338
1339         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
1340                 (long) s, 0, 0 );
1341         switch ( from.sa_addr.sa_family ) {
1342 #  ifdef LDAP_PF_LOCAL
1343         case AF_LOCAL:
1344                 /* FIXME: apparently accept doesn't fill
1345                  * the sun_path sun_path member */
1346                 if ( from.sa_un_addr.sun_path[0] == '\0' ) {
1347                         AC_MEMCPY( from.sa_un_addr.sun_path,
1348                                         sl->sl_sa.sa_un_addr.sun_path,
1349                                         sizeof( from.sa_un_addr.sun_path ) );
1350                 }
1351
1352                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1353                 ssf = local_ssf;
1354                 {
1355                         uid_t uid;
1356                         gid_t gid;
1357
1358                         if( getpeereid( s, &uid, &gid ) == 0 ) {
1359                                 authid.bv_val = ch_malloc(
1360                                         sizeof("uidnumber=4294967295+gidnumber=4294967295,"
1361                                         "cn=peercred,cn=external,cn=auth"));
1362                                 authid.bv_len = sprintf( authid.bv_val,
1363                                         "uidnumber=%d+gidnumber=%d,"
1364                                         "cn=peercred,cn=external,cn=auth",
1365                                         (int) uid, (int) gid);
1366                         }
1367                 }
1368                 dnsname = "local";
1369                 break;
1370 #endif /* LDAP_PF_LOCAL */
1371
1372 #  ifdef LDAP_PF_INET6
1373         case AF_INET6:
1374         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1375                 peeraddr = inet_ntoa( *((struct in_addr *)
1376                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1377                 sprintf( peername, "IP=%s:%d",
1378                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1379                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1380         } else {
1381                 char addr[INET6_ADDRSTRLEN];
1382
1383                 peeraddr = (char *) inet_ntop( AF_INET6,
1384                                       &from.sa_in6_addr.sin6_addr,
1385                                       addr, sizeof addr );
1386                 sprintf( peername, "IP=%s %d",
1387                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1388                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1389         }
1390         break;
1391 #  endif /* LDAP_PF_INET6 */
1392
1393         case AF_INET:
1394         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1395         sprintf( peername, "IP=%s:%d",
1396                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1397                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1398                 break;
1399
1400         default:
1401                 slapd_close(s);
1402                 return 0;
1403         }
1404
1405         if ( ( from.sa_addr.sa_family == AF_INET )
1406 #ifdef LDAP_PF_INET6
1407                 || ( from.sa_addr.sa_family == AF_INET6 )
1408 #endif
1409         ) {
1410 #ifdef SLAPD_RLOOKUPS
1411                 if ( use_reverse_lookup ) {
1412                         char *herr;
1413                         if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
1414                                 sizeof(hbuf), &herr ) == 0) {
1415                                 ldap_pvt_str2lower( hbuf );
1416                                 dnsname = hbuf;
1417                         }
1418                 }
1419 #else
1420                 dnsname = NULL;
1421 #endif /* SLAPD_RLOOKUPS */
1422
1423 #ifdef HAVE_TCPD
1424                 if ( !hosts_ctl("slapd",
1425                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1426                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1427                                 SLAP_STRING_UNKNOWN ))
1428                 {
1429                         /* DENY ACCESS */
1430                         Statslog( LDAP_DEBUG_STATS,
1431                                 "fd=%ld DENIED from %s (%s)\n",
1432                                 (long) s,
1433                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1434                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1435                                 0, 0 );
1436                         slapd_close(s);
1437                         return 0;
1438                 }
1439 #endif /* HAVE_TCPD */
1440         }
1441
1442         id = connection_init(s, sl,
1443                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1444                 peername,
1445 #ifdef HAVE_TLS
1446                 sl->sl_is_tls ? CONN_IS_TLS : 0,
1447 #else
1448                 0,
1449 #endif
1450                 ssf,
1451                 authid.bv_val ? &authid : NULL );
1452
1453         if( authid.bv_val ) ch_free(authid.bv_val);
1454
1455         if( id < 0 ) {
1456                 Debug( LDAP_DEBUG_ANY,
1457                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1458                         (long) s, peername, sl->sl_name.bv_val );
1459                 slapd_close(s);
1460                 return 0;
1461         }
1462
1463         Statslog( LDAP_DEBUG_STATS,
1464                 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1465                 id, (long) s, peername, sl->sl_name.bv_val,
1466                 0 );
1467
1468         slapd_add( s, 1, NULL );
1469         return 0;
1470 }
1471
1472 static void *
1473 slapd_daemon_task(
1474         void *ptr
1475 )
1476 {
1477         int l;
1478         time_t  last_idle_check = 0;
1479         struct timeval idle;
1480
1481 #define SLAPD_IDLE_CHECK_LIMIT 4
1482
1483         if ( global_idletimeout > 0 ) {
1484                 last_idle_check = slap_get_time();
1485                 /* Set the select timeout.
1486                  * Don't just truncate, preserve the fractions of
1487                  * seconds to prevent sleeping for zero time.
1488                  */
1489                 idle.tv_sec = global_idletimeout/SLAPD_IDLE_CHECK_LIMIT;
1490                 idle.tv_usec = global_idletimeout - idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT;
1491                 idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
1492         } else {
1493                 idle.tv_sec = 0;
1494                 idle.tv_usec = 0;
1495         }
1496
1497         slapd_add( wake_sds[0], 0, NULL );
1498
1499         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1500                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1501                         continue;
1502 #ifdef LDAP_CONNECTIONLESS
1503                 /* Since this is connectionless, the data port is the
1504                  * listening port. The listen() and accept() calls
1505                  * are unnecessary.
1506                  */
1507                 if ( slap_listeners[l]->sl_is_udp ) {
1508                         slapd_add( slap_listeners[l]->sl_sd, 1, slap_listeners[l] );
1509                         continue;
1510                 }
1511 #endif
1512
1513                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
1514                         int err = sock_errno();
1515
1516 #ifdef LDAP_PF_INET6
1517                         /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1518                          * we are already listening to in6addr_any, then we want to ignore
1519                          * this and continue.
1520                          */
1521                         if ( err == EADDRINUSE ) {
1522                                 int i;
1523                                 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1524                                 struct sockaddr_in6 sa6;
1525
1526                                 if ( sa.sin_family == AF_INET &&
1527                                      sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1528                                         for ( i = 0 ; i < l; i++ ) {
1529                                                 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1530                                                 if ( sa6.sin6_family == AF_INET6 &&
1531                                                      !memcmp( &sa6.sin6_addr, &in6addr_any, sizeof(struct in6_addr) ) )
1532                                                         break;
1533                                         }
1534
1535                                         if ( i < l ) {
1536                                                 /* We are already listening to in6addr_any */
1537                                                 Debug( LDAP_DEBUG_CONNS,
1538                                                        "daemon: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n",
1539                                                        0, 0, 0 );
1540                                                 slapd_close( slap_listeners[l]->sl_sd );
1541                                                 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1542                                                 continue;
1543                                         }
1544                                 }
1545                         }
1546 #endif
1547                         Debug( LDAP_DEBUG_ANY,
1548                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1549                                         slap_listeners[l]->sl_url.bv_val, err,
1550                                         sock_errstr(err) );
1551                         return( (void*)-1 );
1552                 }
1553
1554                 slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l] );
1555         }
1556
1557 #ifdef HAVE_NT_SERVICE_MANAGER
1558         if ( started_event != NULL ) {
1559                 ldap_pvt_thread_cond_signal( &started_event );
1560         }
1561 #endif
1562         /* initialization complete. Here comes the loop. */
1563
1564         while ( !slapd_shutdown ) {
1565                 ber_socket_t i;
1566                 int ns, nwriters;
1567                 int at;
1568                 ber_socket_t nfds, nrfds, nwfds;
1569 #define SLAPD_EBADF_LIMIT 16
1570                 int ebadf = 0;
1571
1572                 time_t  now;
1573
1574                 SLAP_EVENT_DECL;
1575
1576                 struct timeval          tv;
1577                 struct timeval          *tvp;
1578
1579                 struct timeval          *cat;
1580                 time_t                          tdelta = 1;
1581                 struct re_s*            rtask;
1582                 now = slap_get_time();
1583
1584                 if( ( global_idletimeout > 0 ) &&
1585                         difftime( last_idle_check +
1586                         global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1587                         connections_timeout_idle( now );
1588                         last_idle_check = now;
1589                 }
1590                 tv = idle;
1591
1592 #ifdef SIGHUP
1593                 if( slapd_gentle_shutdown ) {
1594                         ber_socket_t active;
1595
1596                         if( slapd_gentle_shutdown == 1 ) {
1597                                 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1598                                 close_listeners( 1 );
1599                                 frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
1600                                 slapd_gentle_shutdown = 2;
1601                         }
1602
1603                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1604                         active = slap_daemon.sd_nactives;
1605                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1606                         if( active == 0 ) {
1607                                 slapd_shutdown = 2;
1608                                 break;
1609                         }
1610                 }
1611 #endif
1612
1613                 at = 0;
1614
1615                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1616
1617                 nwriters = slap_daemon.sd_nwriters;
1618                 SLAP_EVENT_INIT;
1619
1620                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1621                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1622                                 continue;
1623                         if ( slap_listeners[l]->sl_is_mute )
1624                                 SLAP_SOCK_SET_MUTE( slap_listeners[l]->sl_sd );
1625                         else
1626                         if ( SLAP_SOCK_IS_MUTE( slap_listeners[l]->sl_sd ))
1627                             SLAP_SOCK_CLR_MUTE( slap_listeners[l]->sl_sd );
1628                 }
1629
1630                 nfds = SLAP_EVENT_MAX;
1631
1632                 if ( global_idletimeout && slap_daemon.sd_nactives )
1633                         at = 1;
1634
1635                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1636
1637                 if ( at
1638 #if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
1639                         &&  ( tv.tv_sec || tv.tv_usec )
1640 #endif
1641                         )
1642                         tvp = &tv;
1643                 else
1644                         tvp = NULL;
1645
1646                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
1647                 rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
1648                 while ( cat && cat->tv_sec && cat->tv_sec <= now ) {
1649                         if ( ldap_pvt_runqueue_isrunning( &syncrepl_rq, rtask )) {
1650                                 ldap_pvt_runqueue_resched( &syncrepl_rq, rtask, 0 );
1651                         } else {
1652                                 ldap_pvt_runqueue_runtask( &syncrepl_rq, rtask );
1653                                 ldap_pvt_runqueue_resched( &syncrepl_rq, rtask, 0 );
1654                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
1655                                 ldap_pvt_thread_pool_submit( &connection_pool,
1656                                                                                         rtask->routine, (void *) rtask );
1657                                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
1658                         }
1659                         rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
1660                 }
1661                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
1662
1663                 if ( cat != NULL ) {
1664                         time_t diff = difftime( cat->tv_sec, now );
1665                         if ( diff == 0 )
1666                                 diff = tdelta;
1667                         if ( tvp == NULL || diff < tv.tv_sec ) {
1668                                 tv.tv_sec = diff;
1669                                 tv.tv_usec = 0;
1670                                 tvp = &tv;
1671                         }
1672                 }
1673
1674                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1675                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ||
1676                             slap_listeners[l]->sl_is_mute )
1677                                 continue;
1678
1679                         Debug( LDAP_DEBUG_CONNS,
1680                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1681                                         slap_listeners[l]->sl_sd, at,
1682                                         tvp == NULL ? "NULL" : "zero" );
1683                 }
1684
1685                 switch(ns = SLAP_EVENT_WAIT(tvp))
1686                 {
1687                 case -1: {      /* failure - try again */
1688                                 int err = sock_errno();
1689
1690                                 if( err == EBADF
1691 #ifdef WSAENOTSOCK
1692                                         /* you'd think this would be EBADF */
1693                                         || err == WSAENOTSOCK
1694 #endif
1695                                 ) {
1696                                         if (++ebadf < SLAPD_EBADF_LIMIT)
1697                                                 continue;
1698                                 }
1699
1700                                 if( err != EINTR ) {
1701                                         Debug( LDAP_DEBUG_CONNS,
1702                                                 "daemon: select failed (%d): %s\n",
1703                                                 err, sock_errstr(err), 0 );
1704                                         slapd_shutdown = 2;
1705                                 }
1706                         }
1707                         continue;
1708
1709                 case 0:         /* timeout - let threads run */
1710                         ebadf = 0;
1711                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1712                             0, 0, 0 );
1713
1714                         ldap_pvt_thread_yield();
1715                         continue;
1716
1717                 default:        /* something happened - deal with it */
1718                         if( slapd_shutdown ) continue;
1719
1720                         ebadf = 0;
1721                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
1722                                 ns, 0, 0 );
1723                         /* FALL THRU */
1724                 }
1725
1726                 /* We don't need to examine the event status for wake_sds;
1727                  * if waking is set and we woke up, we'll read whatever
1728                  * we can.
1729                  */
1730                 if ( waking ) {
1731                         char c[BUFSIZ];
1732                         tcp_read( wake_sds[0], c, sizeof(c) );
1733                         waking = 0;
1734                         ns--;
1735                         continue;
1736                 }
1737
1738 #if SLAP_EVENTS_ARE_INDEXED
1739                 /* The event slot equals the descriptor number - this is
1740                  * true for Unix select and poll. We treat Windows select
1741                  * like this too, even though it's a kludge.
1742                  */
1743                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1744                         int rc;
1745
1746                         if ( ns <= 0 ) break;
1747
1748                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1749                                 continue;
1750
1751                         if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd ))
1752                                 continue;
1753
1754                         ns--;
1755
1756                         rc = slapd_handle_listener(slap_listeners[l]);
1757
1758 #ifdef LDAP_CONNECTIONLESS
1759                         /* This is a UDP session, let the data loop process it */
1760                         if ( rc ) continue;
1761 #endif
1762
1763                         /* Don't need to look at this in the data loops */
1764                         SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
1765                         SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
1766                 }
1767
1768                 /* bypass the following tests if no descriptors left */
1769                 if ( ns <= 0 ) {
1770                         ldap_pvt_thread_yield();
1771                         continue;
1772                 }
1773
1774                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1775 #ifdef HAVE_WINSOCK
1776                 nrfds = readfds.fd_count;
1777                 nwfds = writefds.fd_count;
1778                 for ( i = 0; i < readfds.fd_count; i++ ) {
1779                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1780                                 readfds.fd_array[i], "r", 0 );
1781                 }
1782                 for ( i = 0; i < writefds.fd_count; i++ ) {
1783                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1784                                 writefds.fd_array[i], "w", 0 );
1785                 }
1786
1787 #else
1788                 nrfds = 0;
1789                 nwfds = 0;
1790                 for ( i = 0; i < nfds; i++ ) {
1791                         int     r, w;
1792
1793                         r = SLAP_EVENT_IS_READ( i );
1794                         w = SLAP_EVENT_IS_WRITE( i );
1795                         if ( r || w ) {
1796                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1797                                     r ? "r" : "", w ? "w" : "" );
1798                                 if ( r ) {
1799                                         nrfds++;
1800                                         ns--;
1801                                 }
1802                                 if ( w ) {
1803                                         nwfds++;
1804                                         ns--;
1805                                 }
1806                         }
1807                         if ( ns <= 0 ) break;
1808                 }
1809 #endif
1810                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1811
1812
1813                 /* loop through the writers */
1814                 for ( i = 0; nwfds > 0; i++ )
1815                 {
1816                         ber_socket_t wd;
1817 #ifdef HAVE_WINSOCK
1818                         wd = writefds.fd_array[i];
1819 #else
1820                         if( ! SLAP_EVENT_IS_WRITE( i ) ) {
1821                                 continue;
1822                         }
1823                         wd = i;
1824 #endif
1825                         nwfds--;
1826
1827                         Debug( LDAP_DEBUG_CONNS,
1828                                 "daemon: write active on %d\n",
1829                                 wd, 0, 0 );
1830                         /*
1831                          * NOTE: it is possible that the connection was closed
1832                          * and that the stream is now inactive.
1833                          * connection_write() must valid the stream is still
1834                          * active.
1835                          */
1836
1837                         if ( connection_write( wd ) < 0 ) {
1838                                 if ( SLAP_EVENT_IS_READ( wd )) {
1839                                         SLAP_EVENT_CLR_READ( (unsigned) wd );
1840                                         nrfds--;
1841                                 }
1842                                 slapd_close( wd );
1843                         }
1844                 }
1845
1846                 for ( i = 0; nrfds > 0; i++ )
1847                 {
1848                         ber_socket_t rd;
1849 #ifdef HAVE_WINSOCK
1850                         rd = readfds.fd_array[i];
1851 #else
1852                         if( ! SLAP_EVENT_IS_READ( i ) ) {
1853                                 continue;
1854                         }
1855                         rd = i;
1856 #endif
1857                         nrfds--;
1858
1859                         Debug ( LDAP_DEBUG_CONNS,
1860                                 "daemon: read activity on %d\n", rd, 0, 0 );
1861                         /*
1862                          * NOTE: it is possible that the connection was closed
1863                          * and that the stream is now inactive.
1864                          * connection_read() must valid the stream is still
1865                          * active.
1866                          */
1867
1868                         if ( connection_read( rd ) < 0 ) {
1869                                 slapd_close( rd );
1870                         }
1871                 }
1872 #else   /* !SLAP_EVENTS_ARE_INDEXED */
1873         /* FIXME */
1874         /* The events are returned in an arbitrary list. This is true
1875          * for /dev/poll, epoll and kqueue. In order to prioritize things
1876          * so that we can handle wake_sds first, listeners second, and then
1877          * all other connections last (as we do for select), we would need
1878          * to use multiple event handles and cascade them.
1879          *
1880          * That seems like a bit of hassle. So the wake_sds check has moved
1881          * above. For epoll and kqueue we can associate arbitrary data with
1882          * an event, so we could use pointers to the listener structure
1883          * instead of just the file descriptor. For /dev/poll we have to
1884          * search the listeners array for a matching descriptor.
1885          */
1886 #ifdef LDAP_DEBUG
1887                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1888
1889                 for (i=0; i<ns; i++) {
1890                         int     r, w;
1891
1892                         if ( SLAP_EVENT_IS_LISTENER(i)
1893 #ifdef LDAP_CONNECTIONLESS
1894                         && !((SLAP_EVENT_LISTENER(i))->sl_is_udp)
1895 #endif
1896                          ) continue;
1897
1898                         r = SLAP_EVENT_IS_READ( i );
1899                         w = SLAP_EVENT_IS_WRITE( i );
1900                         if ( r || w ) {
1901                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", SLAP_EVENT_FD(i),
1902                                     r ? "r" : "", w ? "w" : "" );
1903                         }
1904                 }
1905 #endif
1906                 for (i=0; i<ns; i++) {
1907                         int rc = 1, fd;
1908
1909                         if ( SLAP_EVENT_IS_LISTENER(i) ) {
1910                                 rc = slapd_handle_listener( SLAP_EVENT_LISTENER( i ));
1911                         }
1912                         /* If we found a regular listener, rc is now zero, and we
1913                          * can skip the data portion. But if it was a UDP listener
1914                          * then rc is still 1, and we want to handle the data.
1915                          */
1916                         if ( rc ) {
1917                                 fd = SLAP_EVENT_FD( i );
1918
1919                                 if( SLAP_EVENT_IS_WRITE( i ) ) {
1920                                         Debug( LDAP_DEBUG_CONNS,
1921                                                 "daemon: write active on %d\n",
1922                                                 fd, 0, 0 );
1923                                         /*
1924                                          * NOTE: it is possible that the connection was closed
1925                                          * and that the stream is now inactive.
1926                                          * connection_write() must valid the stream is still
1927                                          * active.
1928                                          */
1929
1930                                         if ( connection_write( fd ) < 0 ) {
1931                                                 slapd_close( fd );
1932                                                 continue;
1933                                         }
1934                                 }
1935                                 if( SLAP_EVENT_IS_READ( i ) ) {
1936                                         Debug( LDAP_DEBUG_CONNS,
1937                                                 "daemon: read active on %d\n",
1938                                                 fd, 0, 0 );
1939                                         /*
1940                                          * NOTE: it is possible that the connection was closed
1941                                          * and that the stream is now inactive.
1942                                          * connection_read() must valid the stream is still
1943                                          * active.
1944                                          */
1945
1946                                         if ( connection_read( fd ) < 0 ) {
1947                                                 slapd_close( fd );
1948                                         }
1949                                 }
1950                         }
1951                 }
1952 #endif  /* SLAP_EVENTS_ARE_INDEXED */
1953
1954                 ldap_pvt_thread_yield();
1955         }
1956
1957         if( slapd_shutdown == 1 ) {
1958                 Debug( LDAP_DEBUG_TRACE,
1959                         "daemon: shutdown requested and initiated.\n",
1960                         0, 0, 0 );
1961
1962         } else if ( slapd_shutdown == 2 ) {
1963 #ifdef HAVE_NT_SERVICE_MANAGER
1964                         Debug( LDAP_DEBUG_TRACE,
1965                                "daemon: shutdown initiated by Service Manager.\n",
1966                                0, 0, 0);
1967 #else /* !HAVE_NT_SERVICE_MANAGER */
1968                         Debug( LDAP_DEBUG_TRACE,
1969                                "daemon: abnormal condition, shutdown initiated.\n",
1970                                0, 0, 0 );
1971 #endif /* !HAVE_NT_SERVICE_MANAGER */
1972         } else {
1973                 Debug( LDAP_DEBUG_TRACE,
1974                        "daemon: no active streams, shutdown initiated.\n",
1975                        0, 0, 0 );
1976         }
1977
1978         if( slapd_gentle_shutdown != 2 ) {
1979                 close_listeners ( 0 );
1980         }
1981
1982         free ( slap_listeners );
1983         slap_listeners = NULL;
1984
1985         if( !slapd_gentle_shutdown ) {
1986                 slapd_abrupt_shutdown = 1;
1987                 connections_shutdown();
1988         }
1989
1990         Debug( LDAP_DEBUG_ANY,
1991             "slapd shutdown: waiting for %d threads to terminate\n",
1992             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1993         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1994
1995         return NULL;
1996 }
1997
1998
1999 int slapd_daemon( void )
2000 {
2001         int rc;
2002
2003         connections_init();
2004
2005 #define SLAPD_LISTENER_THREAD 1
2006 #if defined( SLAPD_LISTENER_THREAD )
2007         {
2008                 ldap_pvt_thread_t       listener_tid;
2009
2010                 /* listener as a separate THREAD */
2011                 rc = ldap_pvt_thread_create( &listener_tid,
2012                         0, slapd_daemon_task, NULL );
2013
2014                 if ( rc != 0 ) {
2015                         Debug( LDAP_DEBUG_ANY,
2016                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2017                         return rc;
2018                 }
2019
2020                 /* wait for the listener thread to complete */
2021                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
2022         }
2023 #else
2024         /* experimental code */
2025         slapd_daemon_task( NULL );
2026 #endif
2027
2028         return 0;
2029
2030 }
2031
2032 int sockinit(void)
2033 {
2034 #if defined( HAVE_WINSOCK2 )
2035     WORD wVersionRequested;
2036         WSADATA wsaData;
2037         int err;
2038
2039         wVersionRequested = MAKEWORD( 2, 0 );
2040
2041         err = WSAStartup( wVersionRequested, &wsaData );
2042         if ( err != 0 ) {
2043                 /* Tell the user that we couldn't find a usable */
2044                 /* WinSock DLL.                                  */
2045                 return -1;
2046         }
2047
2048         /* Confirm that the WinSock DLL supports 2.0.*/
2049         /* Note that if the DLL supports versions greater    */
2050         /* than 2.0 in addition to 2.0, it will still return */
2051         /* 2.0 in wVersion since that is the version we      */
2052         /* requested.                                        */
2053
2054         if ( LOBYTE( wsaData.wVersion ) != 2 ||
2055                 HIBYTE( wsaData.wVersion ) != 0 )
2056         {
2057             /* Tell the user that we couldn't find a usable */
2058             /* WinSock DLL.                                  */
2059             WSACleanup();
2060             return -1;
2061         }
2062
2063         /* The WinSock DLL is acceptable. Proceed. */
2064 #elif defined( HAVE_WINSOCK )
2065         WSADATA wsaData;
2066         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
2067             return -1;
2068         }
2069 #endif
2070         return 0;
2071 }
2072
2073 int sockdestroy(void)
2074 {
2075 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2076         WSACleanup();
2077 #endif
2078         return 0;
2079 }
2080
2081 RETSIGTYPE
2082 slap_sig_shutdown( int sig )
2083 {
2084 #if 0
2085         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2086 #endif
2087
2088         /*
2089          * If the NT Service Manager is controlling the server, we don't
2090          * want SIGBREAK to kill the server. For some strange reason,
2091          * SIGBREAK is generated when a user logs out.
2092          */
2093
2094 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2095         if (is_NT_Service && sig == SIGBREAK)
2096                 ;
2097         else
2098 #endif
2099 #ifdef SIGHUP
2100         if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0)
2101                 slapd_gentle_shutdown = 1;
2102         else
2103 #endif
2104         slapd_shutdown = 1;
2105         WAKE_LISTENER(1);
2106
2107         /* reinstall self */
2108         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2109 }
2110
2111 RETSIGTYPE
2112 slap_sig_wake( int sig )
2113 {
2114         WAKE_LISTENER(1);
2115
2116         /* reinstall self */
2117         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2118 }
2119
2120
2121 void slapd_add_internal(ber_socket_t s, int isactive) {
2122         slapd_add(s, isactive, NULL);
2123 }
2124
2125 Listener ** slapd_get_listeners(void) {
2126         return slap_listeners;
2127 }
2128
2129 void slap_wake_listener()
2130 {
2131         WAKE_LISTENER(1);
2132 }