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