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

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