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