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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6
   7 #include "portable.h"
   8
   9 #include <stdio.h>
  10
  11 #include <ac/ctype.h>
  12 #include <ac/errno.h>
  13 #include <ac/socket.h>
  14 #include <ac/string.h>
  15 #include <ac/time.h>
  16 #include <ac/unistd.h>
  17
  18 #include "ldap_pvt.h"
  19 #include "ldap_pvt_thread.h"
  20 #include "lutil.h"
  21 #include "slap.h"
  22
  23 #ifdef HAVE_TCPD
  24 #include <tcpd.h>
  25 #define SLAP_STRING_UNKNOWN     STRING_UNKNOWN
  26
  27 int allow_severity = LOG_INFO;
  28 int deny_severity = LOG_NOTICE;
  29 #else /* ! TCP Wrappers */
  30 #define SLAP_STRING_UNKNOWN     "unknown"
  31 #endif /* ! TCP Wrappers */
  32
  33 #ifdef LDAP_PF_LOCAL
  34 #include <sys/stat.h>
  35 /* this should go in <ldap.h> as soon as it is accepted */
  36 #define LDAPI_MOD_URLEXT                "x-mod"
  37 #endif /* LDAP_PF_LOCAL */
  38
  39 #ifdef LDAP_PF_INET6
  40 int slap_inet4or6 = AF_UNSPEC;
  41 #else
  42 int slap_inet4or6 = AF_INET;
  43 #endif
  44
  45 /* globals */
  46 time_t starttime;
  47 ber_socket_t dtblsize;
  48
  49 Listener **slap_listeners = NULL;
  50
  51 #define SLAPD_LISTEN 10
  52
  53 static ber_socket_t wake_sds[2];
  54
  55 #if defined(NO_THREADS) || defined(HAVE_GNU_PTH)
  56 static int waking;
  57 #define WAKE_LISTENER(w) \
  58 ((w && !waking) ? tcp_write( wake_sds[1], "0", 1 ), waking=1 : 0)
  59 #else
  60 #define WAKE_LISTENER(w) \
  61 do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0)
  62 #endif
  63
  64 #ifndef HAVE_WINSOCK
  65 static
  66 #endif
  67 volatile sig_atomic_t slapd_shutdown = 0, slapd_gentle_shutdown = 0;
  68
  69 static struct slap_daemon {
  70         ldap_pvt_thread_mutex_t sd_mutex;
  71
  72         ber_socket_t sd_nactives;
  73
  74 #ifndef HAVE_WINSOCK
  75         /* In winsock, accept() returns values higher than dtblsize
  76                 so don't bother with this optimization */
  77         int sd_nfds;
  78 #endif
  79
  80         fd_set sd_actives;
  81         fd_set sd_readers;
  82         fd_set sd_writers;
  83 } slap_daemon;
  84
  85
  86
  87 #ifdef HAVE_SLP
  88 /*
  89  * SLP related functions
  90  */
  91 #include <slp.h>
  92
  93 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
  94 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
  95 static char** slapd_srvurls = NULL;
  96 static SLPHandle slapd_hslp = 0;
  97
  98 void slapd_slp_init( const char* urls ) {
  99         int i;
 100
 101         slapd_srvurls = ldap_str2charray( urls, " " );
 102
 103         if( slapd_srvurls == NULL ) return;
 104
 105         /* find and expand INADDR_ANY URLs */
 106         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 107                 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
 108                         char *host = ldap_pvt_get_fqdn( NULL );
 109                         if ( host != NULL ) {
 110                                 slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
 111                                         strlen( host ) +
 112                                         sizeof( LDAP_SRVTYPE_PREFIX ) );
 113                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 114                                         LDAP_SRVTYPE_PREFIX ), host );
 115
 116                                 ch_free( host );
 117                         }
 118
 119                 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
 120                         char *host = ldap_pvt_get_fqdn( NULL );
 121                         if ( host != NULL ) {
 122                                 slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
 123                                         strlen( host ) +
 124                                         sizeof( LDAPS_SRVTYPE_PREFIX ) );
 125                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 126                                         LDAPS_SRVTYPE_PREFIX ), host );
 127
 128                                 ch_free( host );
 129                         }
 130                 }
 131         }
 132
 133         /* open the SLP handle */
 134         SLPOpen( "en", 0, &slapd_hslp );
 135 }
 136
 137 void slapd_slp_deinit() {
 138         if( slapd_srvurls == NULL ) return;
 139
 140         ldap_charray_free( slapd_srvurls );
 141         slapd_srvurls = NULL;
 142
 143         /* close the SLP handle */
 144         SLPClose( slapd_hslp );
 145 }
 146
 147 void slapd_slp_regreport(
 148         SLPHandle hslp,
 149         SLPError errcode,
 150         void* cookie )
 151 {
 152         /* empty report */
 153 }
 154
 155 void slapd_slp_reg() {
 156         int i;
 157
 158         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 159                 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
 160                                 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
 161                     strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
 162                                 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
 163                 {
 164                         SLPReg( slapd_hslp,
 165                                 slapd_srvurls[i],
 166                                 SLP_LIFETIME_MAXIMUM,
 167                                 "ldap",
 168                                 "",
 169                                 1,
 170                                 slapd_slp_regreport,
 171                                 NULL );
 172                 }
 173         }
 174 }
 175
 176 void slapd_slp_dereg() {
 177         int i;
 178
 179         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 180                 SLPDereg( slapd_hslp,
 181                         slapd_srvurls[i],
 182                         slapd_slp_regreport,
 183                         NULL );
 184         }
 185 }
 186 #endif /* HAVE_SLP */
 187
 188 /*
 189  * Add a descriptor to daemon control
 190  */
 191 static void slapd_add(ber_socket_t s) {
 192         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 193
 194         assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
 195         assert( !FD_ISSET( s, &slap_daemon.sd_readers ));
 196         assert( !FD_ISSET( s, &slap_daemon.sd_writers ));
 197
 198 #ifndef HAVE_WINSOCK
 199         if (s >= slap_daemon.sd_nfds) {
 200                 slap_daemon.sd_nfds = s + 1;
 201         }
 202 #endif
 203
 204         slap_daemon.sd_nactives++;
 205
 206         FD_SET( s, &slap_daemon.sd_actives );
 207         FD_SET( s, &slap_daemon.sd_readers );
 208
 209 #ifdef NEW_LOGGING
 210         LDAP_LOG( CONNECTION, DETAIL1,
 211                 "slapd_add: added %ld%s%s\n", (long)s,
 212                 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 213                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 214 #else
 215         Debug( LDAP_DEBUG_CONNS, "daemon: added %ld%s%s\n",
 216                 (long) s,
 217             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 218                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 219 #endif
 220         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 221 }
 222
 223 /*
 224  * Remove the descriptor from daemon control
 225  */
 226 void slapd_remove(ber_socket_t s, int wake) {
 227         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 228
 229         slap_daemon.sd_nactives--;
 230
 231 #ifdef NEW_LOGGING
 232         LDAP_LOG( CONNECTION, DETAIL1,
 233                 "slapd_remove: removing %ld%s%s\n", (long) s,
 234                 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 235                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : ""  );
 236 #else
 237         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 238                 (long) s,
 239             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 240                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 241 #endif
 242         FD_CLR( s, &slap_daemon.sd_actives );
 243         FD_CLR( s, &slap_daemon.sd_readers );
 244         FD_CLR( s, &slap_daemon.sd_writers );
 245
 246         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 247         WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
 248 }
 249
 250 void slapd_clr_write(ber_socket_t s, int wake) {
 251         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 252
 253         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 254         FD_CLR( s, &slap_daemon.sd_writers );
 255
 256         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 257         WAKE_LISTENER(wake);
 258 }
 259
 260 void slapd_set_write(ber_socket_t s, int wake) {
 261         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 262
 263         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 264         if (!FD_ISSET(s, &slap_daemon.sd_writers))
 265             FD_SET( (unsigned) s, &slap_daemon.sd_writers );
 266
 267         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 268         WAKE_LISTENER(wake);
 269 }
 270
 271 void slapd_clr_read(ber_socket_t s, int wake) {
 272         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 273
 274         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 275         FD_CLR( s, &slap_daemon.sd_readers );
 276
 277         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 278         WAKE_LISTENER(wake);
 279 }
 280
 281 void slapd_set_read(ber_socket_t s, int wake) {
 282         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 283
 284         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 285         if (!FD_ISSET(s, &slap_daemon.sd_readers))
 286             FD_SET( s, &slap_daemon.sd_readers );
 287
 288         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 289         WAKE_LISTENER(wake);
 290 }
 291
 292 static void slapd_close(ber_socket_t s) {
 293 #ifdef NEW_LOGGING
 294         LDAP_LOG( CONNECTION, DETAIL1, "slapd_close: closing %ld\n", (long)s, 0, 0);
 295 #else
 296         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 297                 (long) s, 0, 0 );
 298 #endif
 299         tcp_close(s);
 300 }
 301
 302 static void slap_free_listener_addresses(struct sockaddr **sal)
 303 {
 304         struct sockaddr **sap;
 305
 306         if (sal == NULL) {
 307                 return;
 308         }
 309
 310         for (sap = sal; *sap != NULL; sap++) {
 311                 ch_free(*sap);
 312         }
 313
 314         ch_free(sal);
 315 }
 316
 317 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 318 static int get_url_perms(
 319         char    **exts,
 320         mode_t  *perms,
 321         int     *crit )
 322 {
 323         int     i;
 324
 325         assert( exts );
 326         assert( perms );
 327         assert( crit );
 328
 329         *crit = 0;
 330         for ( i = 0; exts[ i ]; i++ ) {
 331                 char    *type = exts[ i ];
 332                 int     c = 0;
 333
 334                 if ( type[ 0 ] == '!' ) {
 335                         c = 1;
 336                         type++;
 337                 }
 338
 339                 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=", sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 ) {
 340                         char    *value = type
 341                                 + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
 342                         mode_t  p = 0;
 343                         int     j;
 344
 345                         switch (strlen(value)) {
 346                         case 4:
 347                                 /* skip leading '0' */
 348                                 if ( value[ 0 ] != '0' ) {
 349                                         return LDAP_OTHER;
 350                                 }
 351                                 value++;
 352
 353                         case 3:
 354                                 for ( j = 0; j < 3; j++) {
 355                                         int     v;
 356
 357                                         v = value[ j ] - '0';
 358
 359                                         if ( v < 0 || v > 7 ) {
 360                                                 return LDAP_OTHER;
 361                                         }
 362
 363                                         p |= v << 3*(2-j);
 364                                 }
 365                                 break;
 366
 367                         case 10:
 368                                 for ( j = 1; j < 10; j++ ) {
 369                                         static mode_t   m[] = { 0,
 370                                                 S_IRUSR, S_IWUSR, S_IXUSR,
 371                                                 S_IRGRP, S_IWGRP, S_IXGRP,
 372                                                 S_IROTH, S_IWOTH, S_IXOTH
 373                                         };
 374                                         static char     c[] = "-rwxrwxrwx";
 375
 376                                         if ( value[ j ] == c[ j ] ) {
 377                                                 p |= m[ j ];
 378
 379                                         } else if ( value[ j ] != '-' ) {
 380                                                 return LDAP_OTHER;
 381                                         }
 382                                 }
 383                                 break;
 384
 385                         default:
 386                                 return LDAP_OTHER;
 387                         }
 388
 389                         *crit = c;
 390                         *perms = p;
 391
 392                         return LDAP_SUCCESS;
 393                 }
 394         }
 395
 396         return LDAP_OTHER;
 397 }
 398 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 399
 400 /* port = 0 indicates AF_LOCAL */
 401 static int slap_get_listener_addresses(
 402         const char *host,
 403         unsigned short port,
 404         struct sockaddr ***sal)
 405 {
 406         struct sockaddr **sap;
 407
 408 #ifdef LDAP_PF_LOCAL
 409         if ( port == 0 ) {
 410                 *sal = ch_malloc(2 * sizeof(void *));
 411                 if (*sal == NULL) {
 412                         return -1;
 413                 }
 414
 415                 sap = *sal;
 416                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 417                 if (*sap == NULL)
 418                         goto errexit;
 419                 sap[1] = NULL;
 420
 421                 if ( strlen(host) >
 422                      (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 423 #ifdef NEW_LOGGING
 424                         LDAP_LOG( CONNECTION, INFO,
 425                                 "slap_get_listener_addresses: domain socket path (%s) "
 426                                 "too long in URL\n", host, 0, 0 );
 427 #else
 428                         Debug( LDAP_DEBUG_ANY,
 429                                "daemon: domain socket path (%s) too long in URL",
 430                                host, 0, 0);
 431 #endif
 432                         goto errexit;
 433                 }
 434
 435                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 436                 (*sap)->sa_family = AF_LOCAL;
 437                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 438         } else
 439 #endif
 440         {
 441 #ifdef HAVE_GETADDRINFO
 442                 struct addrinfo hints, *res, *sai;
 443                 int n, err;
 444                 char serv[7];
 445
 446                 memset( &hints, '\0', sizeof(hints) );
 447                 hints.ai_flags = AI_PASSIVE;
 448                 hints.ai_socktype = SOCK_STREAM;
 449                 hints.ai_family = slap_inet4or6;
 450                 snprintf(serv, sizeof serv, "%d", port);
 451
 452                 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
 453 #ifdef NEW_LOGGING
 454                         LDAP_LOG( CONNECTION, INFO,
 455                                    "slap_get_listener_addresses: getaddrinfo failed: %s\n",
 456                                    AC_GAI_STRERROR(err), 0, 0 );
 457 #else
 458                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 459                                 AC_GAI_STRERROR(err), 0, 0);
 460 #endif
 461                         return -1;
 462                 }
 463
 464                 sai = res;
 465                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
 466                         /* EMPTY */ ;
 467                 }
 468                 *sal = ch_calloc(n, sizeof(void *));
 469                 if (*sal == NULL) {
 470                         return -1;
 471                 }
 472
 473                 sap = *sal;
 474                 *sap = NULL;
 475
 476                 for ( sai=res; sai; sai=sai->ai_next ) {
 477                         if( sai->ai_addr == NULL ) {
 478 #ifdef NEW_LOGGING
 479                                 LDAP_LOG( CONNECTION, INFO,
 480                                         "slap_get_listener_addresses: "
 481                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 482 #else
 483                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
 484                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 485 #endif
 486                                 freeaddrinfo(res);
 487                                 goto errexit;
 488                         }
 489
 490                         switch (sai->ai_family) {
 491 #  ifdef LDAP_PF_INET6
 492                         case AF_INET6:
 493                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 494                                 if (*sap == NULL) {
 495                                         freeaddrinfo(res);
 496                                         goto errexit;
 497                                 }
 498                                 *(struct sockaddr_in6 *)*sap =
 499                                         *((struct sockaddr_in6 *)sai->ai_addr);
 500                                 break;
 501 #  endif
 502                         case AF_INET:
 503                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 504                                 if (*sap == NULL) {
 505                                         freeaddrinfo(res);
 506                                         goto errexit;
 507                                 }
 508                                 *(struct sockaddr_in *)*sap =
 509                                         *((struct sockaddr_in *)sai->ai_addr);
 510                                 break;
 511                         default:
 512                                 *sap = NULL;
 513                                 break;
 514                         }
 515
 516                         if (*sap != NULL) {
 517                                 (*sap)->sa_family = sai->ai_family;
 518                                 sap++;
 519                                 *sap = NULL;
 520                         }
 521                 }
 522
 523                 freeaddrinfo(res);
 524 #else
 525                 int i, n = 1;
 526                 struct in_addr in;
 527                 struct hostent *he = NULL;
 528
 529                 if ( host == NULL ) {
 530                         in.s_addr = htonl(INADDR_ANY);
 531
 532                 } else if ( !inet_aton( host, &in ) ) {
 533                         he = gethostbyname( host );
 534                         if( he == NULL ) {
 535 #ifdef NEW_LOGGING
 536                                 LDAP_LOG( CONNECTION, INFO,
 537                                         "slap_get_listener_addresses: invalid host %s\n", host, 0, 0 );
 538 #else
 539                                 Debug( LDAP_DEBUG_ANY,
 540                                        "daemon: invalid host %s", host, 0, 0);
 541 #endif
 542                                 return -1;
 543                         }
 544                         for (n = 0; he->h_addr_list[n]; n++) ;
 545                 }
 546
 547                 *sal = ch_malloc((n+1) * sizeof(void *));
 548                 if (*sal == NULL) {
 549                         return -1;
 550                 }
 551
 552                 sap = *sal;
 553                 for ( i = 0; i<n; i++ ) {
 554                         sap[i] = ch_malloc(sizeof(struct sockaddr_in));
 555                         if (*sap == NULL) {
 556                                 goto errexit;
 557                         }
 558                         (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
 559                         sap[i]->sa_family = AF_INET;
 560                         ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
 561                         if (he) {
 562                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, he->h_addr_list[i], sizeof(struct in_addr) );
 563                         } else {
 564                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, &in, sizeof(struct in_addr) );
 565                         }
 566                 }
 567                 sap[i] = NULL;
 568 #endif
 569         }
 570
 571         return 0;
 572
 573 errexit:
 574         slap_free_listener_addresses(*sal);
 575         return -1;
 576 }
 577
 578 static int slap_open_listener(
 579         const char* url,
 580         int *listeners,
 581         int *cur
 582         )
 583 {
 584         int     num, tmp, rc;
 585         Listener l;
 586         Listener *li;
 587         LDAPURLDesc *lud;
 588         unsigned short port;
 589         int err, addrlen = 0;
 590         struct sockaddr **sal, **psal;
 591         int socktype = SOCK_STREAM;     /* default to COTS */
 592
 593 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 594         /*
 595          * use safe defaults
 596          */
 597         int     crit = 1;
 598 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 599
 600         rc = ldap_url_parse( url, &lud );
 601
 602         if( rc != LDAP_URL_SUCCESS ) {
 603 #ifdef NEW_LOGGING
 604                 LDAP_LOG( CONNECTION, ERR,
 605                         "slap_open_listener: listen URL \"%s\" parse error %d\n",
 606                         url, rc , 0 );
 607 #else
 608                 Debug( LDAP_DEBUG_ANY,
 609                         "daemon: listen URL \"%s\" parse error=%d\n",
 610                         url, rc, 0 );
 611 #endif
 612                 return rc;
 613         }
 614
 615         l.sl_url.bv_val = NULL;
 616
 617 #ifndef HAVE_TLS
 618         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 619 #ifdef NEW_LOGGING
 620                 LDAP_LOG( CONNECTION, INFO,
 621                            "slap_open_listener: TLS is not supported (%s)\n", url, 0, 0 );
 622 #else
 623                 Debug( LDAP_DEBUG_ANY,
 624                         "daemon: TLS not supported (%s)\n",
 625                         url, 0, 0 );
 626 #endif
 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 #ifdef NEW_LOGGING
 656                 LDAP_LOG( CONNECTION, INFO,
 657                         "slap_open_listener: URL scheme is not supported: %s\n", url, 0, 0 );
 658 #else
 659                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 660                         url, 0, 0);
 661 #endif
 662                 ldap_free_urldesc( lud );
 663                 return -1;
 664 #endif
 665         } else {
 666                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 667                         || strcmp(lud->lud_host, "*") == 0 )
 668                 {
 669                         err = slap_get_listener_addresses(NULL, port, &sal);
 670                 } else {
 671                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 672                 }
 673         }
 674 #ifdef LDAP_CONNECTIONLESS
 675         l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
 676 #endif
 677
 678 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 679         if ( lud->lud_exts ) {
 680                 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
 681         } else {
 682                 l.sl_perms = S_IRWXU;
 683         }
 684 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 685
 686         ldap_free_urldesc( lud );
 687         if ( err ) {
 688                 return -1;
 689         }
 690
 691         /* If we got more than one address returned, we need to make space
 692          * for it in the slap_listeners array.
 693          */
 694         for ( num=0; sal[num]; num++ );
 695         if ( num > 1 ) {
 696                 *listeners += num-1;
 697                 slap_listeners = ch_realloc( slap_listeners, (*listeners + 1) * sizeof(Listener *) );
 698         }
 699
 700         psal = sal;
 701         while ( *sal != NULL ) {
 702                 switch( (*sal)->sa_family ) {
 703                 case AF_INET:
 704 #ifdef LDAP_PF_INET6
 705                 case AF_INET6:
 706 #endif
 707 #ifdef LDAP_PF_LOCAL
 708                 case AF_LOCAL:
 709 #endif
 710                         break;
 711                 default:
 712                         sal++;
 713                         continue;
 714                 }
 715 #ifdef LDAP_CONNECTIONLESS
 716                 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
 717 #endif
 718                 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
 719                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 720                         int err = sock_errno();
 721 #ifdef NEW_LOGGING
 722                         LDAP_LOG( CONNECTION, ERR,
 723                                 "slap_open_listener: socket() failed errno=%d (%s)\n",
 724                                 err, sock_errstr(err), 0 );
 725 #else
 726                         Debug( LDAP_DEBUG_ANY,
 727                                 "daemon: socket() failed errno=%d (%s)\n", err,
 728                                 sock_errstr(err), 0 );
 729 #endif
 730                         sal++;
 731                         continue;
 732                 }
 733 #ifndef HAVE_WINSOCK
 734                 if ( l.sl_sd >= dtblsize ) {
 735 #ifdef NEW_LOGGING
 736                         LDAP_LOG( CONNECTION, ERR,
 737                                 "slap_open_listener: listener descriptor %ld is too "
 738                                 "great %ld\n", (long)l.sl_sd, (long)dtblsize, 0 );
 739 #else
 740                         Debug( LDAP_DEBUG_ANY,
 741                                "daemon: listener descriptor %ld is too great %ld\n",
 742                                (long) l.sl_sd, (long) dtblsize, 0 );
 743 #endif
 744                         tcp_close( l.sl_sd );
 745                         sal++;
 746                         continue;
 747                 }
 748 #endif
 749 #ifdef LDAP_PF_LOCAL
 750                 if ( (*sal)->sa_family == AF_LOCAL ) {
 751                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 752                 } else
 753 #endif
 754                 {
 755 #ifdef SO_REUSEADDR
 756                         /* enable address reuse */
 757                         tmp = 1;
 758                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 759                                          (char *) &tmp, sizeof(tmp) );
 760                         if ( rc == AC_SOCKET_ERROR ) {
 761                                 int err = sock_errno();
 762 #ifdef NEW_LOGGING
 763                                 LDAP_LOG( CONNECTION, INFO,
 764                                         "slap_open_listener: setsockopt( %ld, SO_REUSEADDR ) "
 765                                         "failed errno %d (%s)\n", (long)l.sl_sd, err,
 766                                         sock_errstr(err) );
 767 #else
 768                                 Debug( LDAP_DEBUG_ANY,
 769                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 770                                        (long) l.sl_sd, err, sock_errstr(err) );
 771 #endif
 772                         }
 773 #endif
 774                 }
 775
 776                 switch( (*sal)->sa_family ) {
 777                 case AF_INET:
 778                         addrlen = sizeof(struct sockaddr_in);
 779                         break;
 780 #ifdef LDAP_PF_INET6
 781                 case AF_INET6:
 782 #ifdef IPV6_V6ONLY
 783                         /* Try to use IPv6 sockets for IPv6 only */
 784                         tmp = 1;
 785                         rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
 786                                          (char *) &tmp, sizeof(tmp) );
 787                         if ( rc == AC_SOCKET_ERROR ) {
 788                                 int err = sock_errno();
 789 #ifdef NEW_LOGGING
 790                                 LDAP_LOG( CONNECTION, INFO,
 791                                            "slap_open_listener: setsockopt( %ld, IPV6_V6ONLY ) failed errno %d (%s)\n",
 792                                            (long)l.sl_sd, err, sock_errstr(err) );
 793 #else
 794                                 Debug( LDAP_DEBUG_ANY,
 795                                        "slapd(%ld): setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
 796                                        (long) l.sl_sd, err, sock_errstr(err) );
 797 #endif
 798                         }
 799 #endif
 800                         addrlen = sizeof(struct sockaddr_in6);
 801                         break;
 802 #endif
 803 #ifdef LDAP_PF_LOCAL
 804                 case AF_LOCAL:
 805                         addrlen = sizeof(struct sockaddr_un);
 806                         break;
 807 #endif
 808                 }
 809
 810                 if (bind(l.sl_sd, *sal, addrlen)) {
 811                         err = sock_errno();
 812 #ifdef NEW_LOGGING
 813                 LDAP_LOG( CONNECTION, INFO,
 814                         "slap_open_listener: bind(%ld) failed errno=%d (%s)\n",
 815                         (long)l.sl_sd, err, sock_errstr(err) );
 816 #else
 817                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 818                        (long) l.sl_sd, err, sock_errstr(err) );
 819 #endif
 820                         tcp_close( l.sl_sd );
 821                         sal++;
 822                         continue;
 823                 }
 824
 825         switch ( (*sal)->sa_family ) {
 826 #ifdef LDAP_PF_LOCAL
 827         case AF_LOCAL: {
 828                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 829                 if ( chmod( addr, l.sl_perms ) < 0 && crit ) {
 830                         int err = sock_errno();
 831 #ifdef NEW_LOGGING
 832                         LDAP_LOG( CONNECTION, INFO,
 833                                 "slap_open_listener: fchmod(%ld) failed errno=%d (%s)\n",
 834                                 (long)l.sl_sd, err, sock_errstr(err) );
 835 #else
 836                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 837                                (long) l.sl_sd, err, sock_errstr(err) );
 838 #endif
 839                         tcp_close( l.sl_sd );
 840                         slap_free_listener_addresses(psal);
 841                         return -1;
 842                 }
 843                 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
 844                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
 845                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
 846                                 "PATH=%s", addr );
 847         } break;
 848 #endif /* LDAP_PF_LOCAL */
 849
 850         case AF_INET: {
 851                 char *s;
 852 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
 853                 char addr[INET_ADDRSTRLEN];
 854                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
 855                            addr, sizeof(addr) );
 856                 s = addr;
 857 #else
 858                 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
 859 #endif
 860                 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
 861                 l.sl_name.bv_val = ber_memalloc( sizeof("IP=255.255.255.255:65535") );
 862                 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
 863                         "IP=%s:%d",
 864                          s != NULL ? s : SLAP_STRING_UNKNOWN, port );
 865                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
 866         } break;
 867
 868 #ifdef LDAP_PF_INET6
 869         case AF_INET6: {
 870                 char addr[INET6_ADDRSTRLEN];
 871                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
 872                            addr, sizeof addr);
 873                 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
 874                 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
 875                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
 876                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
 877                                 addr, port );
 878                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
 879         } break;
 880 #endif /* LDAP_PF_INET6 */
 881
 882         default:
 883 #ifdef NEW_LOGGING
 884                 LDAP_LOG( CONNECTION, INFO,
 885                         "slap_open_listener: unsupported address family (%d)\n",
 886                         (int)(*sal)->sa_family, 0, 0 );
 887 #else
 888                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 889                         (int) (*sal)->sa_family, 0, 0 );
 890 #endif
 891                 break;
 892         }
 893
 894         AC_MEMCPY(&l.sl_sa, *sal, addrlen);
 895         ber_str2bv( url, 0, 1, &l.sl_url);
 896         li = ch_malloc( sizeof( Listener ) );
 897         *li = l;
 898         slap_listeners[*cur] = li;
 899         (*cur)++;
 900         sal++;
 901
 902         } /* while ( *sal != NULL ) */
 903
 904         slap_free_listener_addresses(psal);
 905
 906         if ( l.sl_url.bv_val == NULL )
 907         {
 908 #ifdef NEW_LOGGING
 909                 LDAP_LOG( CONNECTION, RESULTS,
 910                         "slap_open_listener: failed on %s\n", url, 0, 0 );
 911 #else
 912                 Debug( LDAP_DEBUG_TRACE,
 913                         "slap_open_listener: failed on %s\n", url, 0, 0 );
 914 #endif
 915                 return -1;
 916         }
 917
 918 #ifdef NEW_LOGGING
 919         LDAP_LOG( CONNECTION, RESULTS,
 920                 "slap_open_listener: daemon initialized %s\n",
 921                 l.sl_url.bv_val, 0, 0 );
 922 #else
 923         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 924                 l.sl_url.bv_val, 0, 0 );
 925 #endif
 926         return 0;
 927 }
 928
 929 static int sockinit(void);
 930 static int sockdestroy(void);
 931
 932 int slapd_daemon_init( const char *urls )
 933 {
 934         int i, j, n, rc;
 935         char **u;
 936
 937 #ifdef NEW_LOGGING
 938         LDAP_LOG( CONNECTION, ARGS,
 939                 "slapd_daemon_init: %s\n", urls ? urls : "<null>", 0, 0 );
 940 #else
 941         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 942                 urls ? urls : "<null>", 0, 0 );
 943 #endif
 944         if( (rc = sockinit()) != 0 ) {
 945                 return rc;
 946         }
 947
 948 #ifdef HAVE_SYSCONF
 949         dtblsize = sysconf( _SC_OPEN_MAX );
 950 #elif HAVE_GETDTABLESIZE
 951         dtblsize = getdtablesize();
 952 #else
 953         dtblsize = FD_SETSIZE;
 954 #endif
 955
 956 #ifdef FD_SETSIZE
 957         if(dtblsize > FD_SETSIZE) {
 958                 dtblsize = FD_SETSIZE;
 959         }
 960 #endif  /* !FD_SETSIZE */
 961
 962         /* open a pipe (or something equivalent connected to itself).
 963          * we write a byte on this fd whenever we catch a signal. The main
 964          * loop will be select'ing on this socket, and will wake up when
 965          * this byte arrives.
 966          */
 967         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 968 #ifdef NEW_LOGGING
 969                 LDAP_LOG( CONNECTION, ERR,
 970                         "slap_daemon_init: lutil_pair() failed rc=%d\n", rc, 0, 0);
 971 #else
 972                 Debug( LDAP_DEBUG_ANY,
 973                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 974 #endif
 975                 return rc;
 976         }
 977
 978         FD_ZERO( &slap_daemon.sd_readers );
 979         FD_ZERO( &slap_daemon.sd_writers );
 980
 981         if( urls == NULL ) {
 982                 urls = "ldap:///";
 983         }
 984
 985         u = ldap_str2charray( urls, " " );
 986
 987         if( u == NULL || u[0] == NULL ) {
 988 #ifdef NEW_LOGGING
 989                 LDAP_LOG( CONNECTION, ERR,
 990                         "slap_daemon_init: no urls (%s) provided.\n", urls, 0, 0 );
 991 #else
 992                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
 993                         urls, 0, 0 );
 994 #endif
 995                 return -1;
 996         }
 997
 998         for( i=0; u[i] != NULL; i++ ) {
 999 #ifdef NEW_LOGGING
1000                 LDAP_LOG( CONNECTION, DETAIL1,
1001                         "slap_daemon_init: listen on %s\n.", u[i], 0, 0 );
1002 #else
1003                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1004                         u[i], 0, 0 );
1005 #endif
1006         }
1007
1008         if( i == 0 ) {
1009 #ifdef NEW_LOGGING
1010                 LDAP_LOG( CONNECTION, INFO,
1011                          "slap_daemon_init: no listeners to open (%s)\n", urls, 0, 0 );
1012 #else
1013                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1014                         urls, 0, 0 );
1015 #endif
1016                 ldap_charray_free( u );
1017                 return -1;
1018         }
1019
1020 #ifdef NEW_LOGGING
1021         LDAP_LOG( CONNECTION, INFO,
1022                 "slap_daemon_init: %d listeners to open...\n", i, 0, 0 );
1023 #else
1024         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1025                 i, 0, 0 );
1026 #endif
1027         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1028
1029         for(n = 0, j = 0; u[n]; n++ ) {
1030                 if ( slap_open_listener( u[n], &i, &j ) ) {
1031                         ldap_charray_free( u );
1032                         return -1;
1033                 }
1034         }
1035         slap_listeners[j] = NULL;
1036
1037 #ifdef NEW_LOGGING
1038         LDAP_LOG( CONNECTION, DETAIL1,
1039                 "slap_daemon_init: %d listeners opened\n", i, 0, 0 );
1040 #else
1041         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1042                 i, 0, 0 );
1043 #endif
1044
1045 #ifdef HAVE_SLP
1046         slapd_slp_init( urls );
1047         slapd_slp_reg();
1048 #endif
1049
1050         ldap_charray_free( u );
1051         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1052         return !i;
1053 }
1054
1055
1056 int
1057 slapd_daemon_destroy(void)
1058 {
1059         connections_destroy();
1060         tcp_close( wake_sds[1] );
1061         tcp_close( wake_sds[0] );
1062         sockdestroy();
1063
1064 #ifdef HAVE_SLP
1065         slapd_slp_dereg();
1066         slapd_slp_deinit();
1067 #endif
1068
1069         return 0;
1070 }
1071
1072
1073 static void
1074 close_listeners(
1075         int remove
1076 )
1077 {
1078         int l;
1079
1080         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1081                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1082                         if ( remove )
1083                                 slapd_remove( slap_listeners[l]->sl_sd, 0 );
1084 #ifdef LDAP_PF_LOCAL
1085                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1086                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1087                         }
1088 #endif /* LDAP_PF_LOCAL */
1089                         slapd_close( slap_listeners[l]->sl_sd );
1090                 }
1091                 if ( slap_listeners[l]->sl_url.bv_val )
1092                         ber_memfree( slap_listeners[l]->sl_url.bv_val );
1093                 if ( slap_listeners[l]->sl_name.bv_val )
1094                         ber_memfree( slap_listeners[l]->sl_name.bv_val );
1095                 free ( slap_listeners[l] );
1096                 slap_listeners[l] = NULL;
1097         }
1098 }
1099
1100
1101 static void *
1102 slapd_daemon_task(
1103         void *ptr
1104 )
1105 {
1106         int l;
1107         time_t  last_idle_check = 0;
1108         time( &starttime );
1109
1110         if ( global_idletimeout > 0 ) {
1111                 last_idle_check = slap_get_time();
1112         }
1113         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1114                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1115                         continue;
1116 #ifdef LDAP_CONNECTIONLESS
1117                 /* Since this is connectionless, the data port is the
1118                  * listening port. The listen() and accept() calls
1119                  * are unnecessary.
1120                  */
1121                 if ( slap_listeners[l]->sl_is_udp ) {
1122                         slapd_add( slap_listeners[l]->sl_sd );
1123                         continue;
1124                 }
1125 #endif
1126
1127                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
1128                         int err = sock_errno();
1129
1130 #ifdef LDAP_PF_INET6
1131                         /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1132                          * we are already listening to in6addr_any, then we want to ignore
1133                          * this and continue.
1134                          */
1135                         if ( err == EADDRINUSE ) {
1136                                 int i;
1137                                 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1138                                 struct sockaddr_in6 sa6;
1139
1140                                 if ( sa.sin_family == AF_INET &&
1141                                      sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1142                                         for ( i = 0 ; i < l; i++ ) {
1143                                                 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1144                                                 if ( sa6.sin6_family == AF_INET6 &&
1145                                                      !memcmp( &sa6.sin6_addr, &in6addr_any, sizeof(struct in6_addr) ) )
1146                                                         break;
1147                                         }
1148
1149                                         if ( i < l ) {
1150                                                 /* We are already listening to in6addr_any */
1151 #ifdef NEW_LOGGING
1152                                                 LDAP_LOG(CONNECTION, WARNING,
1153                                                            "slapd_daemon_task: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n", 0, 0, 0 );
1154 #else
1155                                                 Debug( LDAP_DEBUG_CONNS,
1156                                                        "daemon: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n",
1157                                                        0, 0, 0 );
1158 #endif
1159                                                 slapd_close( slap_listeners[l]->sl_sd );
1160                                                 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1161                                                 continue;
1162                                         }
1163                                 }
1164                         }
1165 #endif
1166 #ifdef NEW_LOGGING
1167                         LDAP_LOG( CONNECTION, ERR,
1168                                 "slapd_daemon_task: listen( %s, 5 ) failed errno=%d (%s)\n",
1169                                 slap_listeners[l]->sl_url.bv_val, err, sock_errstr(err) );
1170 #else
1171                         Debug( LDAP_DEBUG_ANY,
1172                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1173                                         slap_listeners[l]->sl_url.bv_val, err,
1174                                         sock_errstr(err) );
1175 #endif
1176                         return( (void*)-1 );
1177                 }
1178
1179                 slapd_add( slap_listeners[l]->sl_sd );
1180         }
1181
1182 #ifdef HAVE_NT_SERVICE_MANAGER
1183         if ( started_event != NULL ) {
1184                 ldap_pvt_thread_cond_signal( &started_event );
1185         }
1186 #endif
1187         /* initialization complete. Here comes the loop. */
1188
1189         while ( !slapd_shutdown ) {
1190                 ber_socket_t i;
1191                 int ns;
1192                 int at;
1193                 ber_socket_t nfds;
1194 #define SLAPD_EBADF_LIMIT 16
1195                 int ebadf = 0;
1196                 int emfile = 0;
1197
1198 #define SLAPD_IDLE_CHECK_LIMIT 4
1199                 time_t  now;
1200
1201
1202                 fd_set                  readfds;
1203                 fd_set                  writefds;
1204                 Sockaddr                from;
1205
1206                 struct timeval          zero;
1207                 struct timeval          *tvp;
1208
1209                 if( emfile ) {
1210                         now = slap_get_time();
1211                         connections_timeout_idle( now );
1212                 }
1213                 else if ( global_idletimeout > 0 ) {
1214                         now = slap_get_time();
1215                         if ( difftime( last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1216                                 connections_timeout_idle( now );
1217                         }
1218                 }
1219
1220 #ifdef SIGHUP
1221                 if( slapd_gentle_shutdown ) {
1222                         ber_socket_t active;
1223
1224                         if( slapd_gentle_shutdown == 1 ) {
1225                                 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1226                                 close_listeners( 1 );
1227                                 global_restrictops |= SLAP_RESTRICT_OP_WRITES;
1228                                 slapd_gentle_shutdown = 2;
1229                         }
1230
1231                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1232                         active = slap_daemon.sd_nactives;
1233                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1234                         if( active == 0 ) {
1235                                 slapd_shutdown = 2;
1236                                 break;
1237                         }
1238                 }
1239 #endif
1240
1241                 FD_ZERO( &writefds );
1242                 FD_ZERO( &readfds );
1243
1244                 zero.tv_sec = 0;
1245                 zero.tv_usec = 0;
1246
1247                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1248
1249 #ifdef FD_SET_MANUAL_COPY
1250                 for( s = 0; s < nfds; s++ ) {
1251                         if(FD_ISSET( &slap_sd_readers, s )) {
1252                                 FD_SET( s, &readfds );
1253                         }
1254                         if(FD_ISSET( &slap_sd_writers, s )) {
1255                                 FD_SET( s, &writefds );
1256                         }
1257                 }
1258 #else
1259                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
1260                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
1261 #endif
1262                 assert(!FD_ISSET(wake_sds[0], &readfds));
1263                 FD_SET( wake_sds[0], &readfds );
1264
1265                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1266                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1267                                 continue;
1268                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
1269                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
1270                 }
1271
1272 #ifndef HAVE_WINSOCK
1273                 nfds = slap_daemon.sd_nfds;
1274 #else
1275                 nfds = dtblsize;
1276 #endif
1277
1278                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1279
1280                 at = ldap_pvt_thread_pool_backload(&connection_pool);
1281
1282 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
1283                 tvp = NULL;
1284 #else
1285                 tvp = at ? &zero : NULL;
1286 #endif
1287
1288                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1289                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1290                                 continue;
1291
1292 #ifdef NEW_LOGGING
1293                         LDAP_LOG( CONNECTION, DETAIL1,
1294                                 "slapd_daemon_task: select: listen=%d "
1295                                 "active_threads=%d tvp=%s\n",
1296                                 slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
1297 #else
1298                         Debug( LDAP_DEBUG_CONNS,
1299                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1300                                         slap_listeners[l]->sl_sd, at,
1301                                         tvp == NULL ? "NULL" : "zero" );
1302 #endif
1303                 }
1304
1305                 switch(ns = select( nfds, &readfds,
1306 #ifdef HAVE_WINSOCK
1307                         /* don't pass empty fd_set */
1308                         ( writefds.fd_count > 0 ? &writefds : NULL ),
1309 #else
1310                         &writefds,
1311 #endif
1312                         NULL, tvp ))
1313                 {
1314                 case -1: {      /* failure - try again */
1315                                 int err = sock_errno();
1316
1317                                 if( err == EBADF
1318 #ifdef WSAENOTSOCK
1319                                         /* you'd think this would be EBADF */
1320                                         || err == WSAENOTSOCK
1321 #endif
1322                                 ) {
1323                                         if (++ebadf < SLAPD_EBADF_LIMIT)
1324                                                 continue;
1325                                 }
1326
1327                                 if( err != EINTR ) {
1328 #ifdef NEW_LOGGING
1329                                         LDAP_LOG( CONNECTION, INFO,
1330                                                 "slapd_daemon_task: select failed (%d): %s\n",
1331                                                 err, sock_errstr(err), 0 );
1332 #else
1333                                         Debug( LDAP_DEBUG_CONNS,
1334                                                 "daemon: select failed (%d): %s\n",
1335                                                 err, sock_errstr(err), 0 );
1336 #endif
1337                                         slapd_shutdown = 2;
1338                                 }
1339                         }
1340                         continue;
1341
1342                 case 0:         /* timeout - let threads run */
1343                         ebadf = 0;
1344 #ifdef NEW_LOGGING
1345                         LDAP_LOG( CONNECTION, DETAIL2,
1346                                    "slapd_daemon_task: select timeout - yielding\n", 0, 0, 0 );
1347 #else
1348                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1349                             0, 0, 0 );
1350 #endif
1351                         ldap_pvt_thread_yield();
1352                         continue;
1353
1354                 default:        /* something happened - deal with it */
1355                         if( slapd_shutdown ) continue;
1356
1357                         ebadf = 0;
1358 #ifdef NEW_LOGGING
1359                         LDAP_LOG( CONNECTION, DETAIL2,
1360                                    "slapd_daemon_task: activity on %d descriptors\n", ns, 0, 0 );
1361 #else
1362                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
1363                                 ns, 0, 0 );
1364 #endif
1365                         /* FALL THRU */
1366                 }
1367
1368                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
1369                         char c[BUFSIZ];
1370                         tcp_read( wake_sds[0], c, sizeof(c) );
1371 #if defined(NO_THREADS) || defined(HAVE_GNU_PTH)
1372                         waking = 0;
1373 #endif
1374                         continue;
1375                 }
1376
1377                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1378                         ber_socket_t s;
1379                         socklen_t len = sizeof(from);
1380                         long id;
1381                         slap_ssf_t ssf = 0;
1382                         char *authid = NULL;
1383 #ifdef SLAPD_RLOOKUPS
1384                         char *hebuf = NULL;
1385 #endif
1386
1387                         char    *dnsname = NULL;
1388                         char    *peeraddr = NULL;
1389 #ifdef LDAP_PF_LOCAL
1390                         char    peername[MAXPATHLEN + sizeof("PATH=")];
1391 #elif defined(LDAP_PF_INET6)
1392                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1393 #else
1394                         char    peername[sizeof("IP=255.255.255.255:65336")];
1395 #endif /* LDAP_PF_LOCAL */
1396
1397                         peername[0] = '\0';
1398
1399                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1400                                 continue;
1401
1402                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
1403                                 continue;
1404
1405 #ifdef LDAP_CONNECTIONLESS
1406                         if ( slap_listeners[l]->sl_is_udp ) {
1407                                 /* The first time we receive a query, we set this
1408                                  * up as a "connection". It remains open for the life
1409                                  * of the slapd.
1410                                  */
1411                                 if ( slap_listeners[l]->sl_is_udp < 2 ) {
1412                                     id = connection_init(
1413                                         slap_listeners[l]->sl_sd,
1414                                         slap_listeners[l], "", "",
1415                                         2, ssf, authid );
1416                                     slap_listeners[l]->sl_is_udp++;
1417                                 }
1418                                 continue;
1419                         }
1420 #endif
1421
1422                         s = accept( slap_listeners[l]->sl_sd,
1423                                 (struct sockaddr *) &from, &len );
1424                         if ( s == AC_SOCKET_INVALID ) {
1425                                 int err = sock_errno();
1426
1427 #ifdef EMFILE
1428                                 if( err == EMFILE ) {
1429                                         emfile++;
1430                                 } else
1431 #endif
1432 #ifdef ENFILE
1433                                 if( err == ENFILE ) {
1434                                         emfile++;
1435                                 } else
1436 #endif
1437                                 {
1438                                         emfile=0;
1439                                 }
1440
1441                                 if( emfile < 3 ) {
1442 #ifdef NEW_LOGGING
1443                                         LDAP_LOG( CONNECTION, ERR,
1444                                                 "slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
1445                                                 (long)slap_listeners[l]->sl_sd,
1446                                                 err, sock_errstr(err) );
1447 #else
1448                                         Debug( LDAP_DEBUG_ANY,
1449                                             "daemon: accept(%ld) failed errno=%d (%s)\n",
1450                                             (long) slap_listeners[l]->sl_sd, err,
1451                                             sock_errstr(err) );
1452 #endif
1453                                 } else {
1454                                         /* prevent busy loop */
1455 #  ifdef HAVE_USLEEP
1456                                         if( emfile % 4 == 3 ) usleep( 250 );
1457 #  else
1458                                         if( emfile % 8 == 7 ) sleep( 1 );
1459 #  endif
1460                                 }
1461
1462                                 ldap_pvt_thread_yield();
1463                                 continue;
1464                         }
1465                         emfile = 0;
1466
1467 #ifndef HAVE_WINSOCK
1468                         /* make sure descriptor number isn't too great */
1469                         if ( s >= dtblsize ) {
1470 #ifdef NEW_LOGGING
1471                                 LDAP_LOG( CONNECTION, ERR,
1472                                    "slapd_daemon_task: %ld beyond descriptor table size %ld\n",
1473                                    (long)s, (long)dtblsize, 0 );
1474 #else
1475                                 Debug( LDAP_DEBUG_ANY,
1476                                         "daemon: %ld beyond descriptor table size %ld\n",
1477                                         (long) s, (long) dtblsize, 0 );
1478 #endif
1479
1480                                 slapd_close(s);
1481                                 ldap_pvt_thread_yield();
1482                                 continue;
1483                         }
1484 #endif
1485
1486 #ifdef LDAP_DEBUG
1487                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1488
1489                         /* newly accepted stream should not be in any of the FD SETS */
1490                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
1491                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
1492                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
1493
1494                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1495 #endif
1496
1497 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1498 #ifdef LDAP_PF_LOCAL
1499                         /* for IPv4 and IPv6 sockets only */
1500                         if ( from.sa_addr.sa_family != AF_LOCAL )
1501 #endif /* LDAP_PF_LOCAL */
1502                         {
1503                                 int rc;
1504                                 int tmp;
1505 #ifdef SO_KEEPALIVE
1506                                 /* enable keep alives */
1507                                 tmp = 1;
1508                                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1509                                         (char *) &tmp, sizeof(tmp) );
1510                                 if ( rc == AC_SOCKET_ERROR ) {
1511                                         int err = sock_errno();
1512 #ifdef NEW_LOGGING
1513                                         LDAP_LOG( CONNECTION, ERR,
1514                                                 "slapd_daemon_task: setsockopt( %ld, SO_KEEPALIVE)"
1515                                            " failed errno=%d (%s)\n",
1516                                                 (long)s, err, sock_errstr(err) );
1517 #else
1518                                         Debug( LDAP_DEBUG_ANY,
1519                                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1520                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1521 #endif
1522                                 }
1523 #endif
1524 #ifdef TCP_NODELAY
1525                                 /* enable no delay */
1526                                 tmp = 1;
1527                                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1528                                         (char *)&tmp, sizeof(tmp) );
1529                                 if ( rc == AC_SOCKET_ERROR ) {
1530                                         int err = sock_errno();
1531 #ifdef NEW_LOGGING
1532                                         LDAP_LOG( CONNECTION, ERR,
1533                                                 "slapd_daemon_task: setsockopt( %ld, "
1534                                                 "TCP_NODELAY) failed errno=%d (%s)\n",
1535                                                 (long)s, err, sock_errstr(err) );
1536 #else
1537                                         Debug( LDAP_DEBUG_ANY,
1538                                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1539                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1540 #endif
1541                                 }
1542 #endif
1543                         }
1544 #endif
1545
1546 #ifdef NEW_LOGGING
1547                         LDAP_LOG( CONNECTION, DETAIL1,
1548                                 "slapd_daemon_task: new connection on %ld\n", (long)s, 0, 0 );
1549 #else
1550                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
1551                                 (long) s, 0, 0 );
1552 #endif
1553                         switch ( from.sa_addr.sa_family ) {
1554 #  ifdef LDAP_PF_LOCAL
1555                         case AF_LOCAL:
1556                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1557                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
1558                                 {
1559                                         uid_t uid;
1560                                         gid_t gid;
1561
1562                                         if( getpeereid( s, &uid, &gid ) == 0 ) {
1563                                                 authid = ch_malloc(
1564                                                         sizeof("uidNumber=4294967295+gidNumber=4294967295,"
1565                                                                 "cn=peercred,cn=external,cn=auth"));
1566                                                 sprintf(authid, "uidNumber=%d+gidNumber=%d,"
1567                                                         "cn=peercred,cn=external,cn=auth",
1568                                                         (int) uid, (int) gid);
1569                                         }
1570                                 }
1571                                 dnsname = "local";
1572                                 break;
1573 #endif /* LDAP_PF_LOCAL */
1574
1575 #  ifdef LDAP_PF_INET6
1576                         case AF_INET6:
1577                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1578                                 peeraddr = inet_ntoa( *((struct in_addr *)
1579                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1580                                 sprintf( peername, "IP=%s:%d",
1581                                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1582                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1583                         } else {
1584                                 char addr[INET6_ADDRSTRLEN];
1585
1586                                 peeraddr = (char *) inet_ntop( AF_INET6,
1587                                                       &from.sa_in6_addr.sin6_addr,
1588                                                       addr, sizeof addr );
1589                                 sprintf( peername, "IP=%s %d",
1590                                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1591                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1592                         }
1593                         break;
1594 #  endif /* LDAP_PF_INET6 */
1595
1596                         case AF_INET:
1597                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1598                         sprintf( peername, "IP=%s:%d",
1599                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1600                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1601                                 break;
1602
1603                         default:
1604                                 slapd_close(s);
1605                                 continue;
1606                         }
1607
1608                         if ( ( from.sa_addr.sa_family == AF_INET )
1609 #ifdef LDAP_PF_INET6
1610                                 || ( from.sa_addr.sa_family == AF_INET6 )
1611 #endif
1612                         ) {
1613 #ifdef SLAPD_RLOOKUPS
1614                                 if ( use_reverse_lookup ) {
1615                                         struct hostent he;
1616                                         int herr;
1617                                         struct hostent *hp = NULL;
1618 #  ifdef LDAP_PF_INET6
1619                                         if ( from.sa_addr.sa_family == AF_INET6 )
1620                                                 ldap_pvt_gethostbyaddr_a(
1621                                                         (char *)&(from.sa_in6_addr.sin6_addr),
1622                                                         sizeof(from.sa_in6_addr.sin6_addr),
1623                                                         AF_INET6, &he, &hebuf,
1624                                                         &hp, &herr );
1625                                         else
1626 #  endif /* LDAP_PF_INET6 */
1627                                         ldap_pvt_gethostbyaddr_a(
1628                                                 (char *) &(from.sa_in_addr.sin_addr),
1629                                                 sizeof(from.sa_in_addr.sin_addr),
1630                                                 AF_INET, &he, &hebuf, &hp, &herr );
1631                                         dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
1632                                 }
1633 #else
1634                                 dnsname = NULL;
1635 #endif /* SLAPD_RLOOKUPS */
1636
1637 #ifdef HAVE_TCPD
1638                                 if ( !hosts_ctl("slapd",
1639                                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1640                                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1641                                                 SLAP_STRING_UNKNOWN ))
1642                                 {
1643                                         /* DENY ACCESS */
1644                                         Statslog( LDAP_DEBUG_STATS,
1645                                                 "fd=%ld DENIED from %s (%s)",
1646                                                 (long) s,
1647                                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1648                                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1649                                                 0, 0 );
1650                                         slapd_close(s);
1651                                         continue;
1652                                 }
1653 #endif /* HAVE_TCPD */
1654                         }
1655
1656                         id = connection_init(s,
1657                                 slap_listeners[l],
1658                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1659                                 peername,
1660 #ifdef HAVE_TLS
1661                                 slap_listeners[l]->sl_is_tls,
1662 #else
1663                                 0,
1664 #endif
1665                                 ssf,
1666                                 authid );
1667
1668                         if( authid ) ch_free(authid);
1669 #ifdef SLAPD_RLOOKUPS
1670                         if( hebuf ) ldap_memfree(hebuf);
1671 #endif
1672
1673                         if( id < 0 ) {
1674 #ifdef NEW_LOGGING
1675                                 LDAP_LOG( CONNECTION, INFO,
1676                                         "slapd_daemon_task: "
1677                                         "connection_init(%ld, %s, %s) "
1678                                         "failed.\n",
1679                                         (long)s, peername,
1680                                         slap_listeners[l]->sl_name.bv_val );
1681 #else
1682                                 Debug( LDAP_DEBUG_ANY,
1683                                         "daemon: connection_init(%ld, %s, %s) "
1684                                         "failed.\n",
1685                                         (long) s,
1686                                         peername,
1687                                         slap_listeners[l]->sl_name.bv_val );
1688 #endif
1689                                 slapd_close(s);
1690                                 continue;
1691                         }
1692
1693                         Statslog( LDAP_DEBUG_STATS,
1694                                 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1695                                 id, (long) s,
1696                                 peername,
1697                                 slap_listeners[l]->sl_name.bv_val,
1698                                 0 );
1699
1700                         slapd_add( s );
1701                         continue;
1702                 }
1703
1704 #ifdef LDAP_DEBUG
1705 #ifdef NEW_LOGGING
1706                 LDAP_LOG( CONNECTION, DETAIL2,
1707                            "slapd_daemon_task: activity on ", 0, 0, 0 );
1708 #else
1709                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1710 #endif
1711 #ifdef HAVE_WINSOCK
1712                 for ( i = 0; i < readfds.fd_count; i++ ) {
1713 #ifdef NEW_LOGGING
1714                         LDAP_LOG( CONNECTION, DETAIL2,
1715                                 " %d%s", readfds.fd_array[i], "r", 0, 0 );
1716 #else
1717                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1718                                 readfds.fd_array[i], "r", 0 );
1719 #endif
1720                 }
1721                 for ( i = 0; i < writefds.fd_count; i++ ) {
1722 #ifdef NEW_LOGGING
1723                         LDAP_LOG( CONNECTION, DETAIL2,
1724                                 " %d%s", writefds.fd_array[i], "w" , 0 );
1725 #else
1726                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1727                                 writefds.fd_array[i], "w", 0 );
1728 #endif
1729                 }
1730
1731 #else
1732                 for ( i = 0; i < nfds; i++ ) {
1733                         int     r, w;
1734                         int     is_listener = 0;
1735
1736                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1737                                 if ( i == slap_listeners[l]->sl_sd ) {
1738 #ifdef LDAP_CONNECTIONLESS
1739                                 /* The listener is the data port. Don't
1740                                  * skip it.
1741                                  */
1742                                         if (slap_listeners[l]->sl_is_udp) continue;
1743 #endif
1744                                         is_listener = 1;
1745                                         break;
1746                                 }
1747                         }
1748                         if ( is_listener ) {
1749                                 continue;
1750                         }
1751                         r = FD_ISSET( i, &readfds );
1752                         w = FD_ISSET( i, &writefds );
1753                         if ( r || w ) {
1754 #ifdef NEW_LOGGING
1755                                 LDAP_LOG( CONNECTION, DETAIL2,
1756                                         " %d%s%s", i, r ? "r" : "", w ? "w" : "" );
1757 #else
1758                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1759                                     r ? "r" : "", w ? "w" : "" );
1760 #endif
1761                         }
1762                 }
1763 #endif
1764 #ifdef NEW_LOGGING
1765                 LDAP_LOG( CONNECTION, DETAIL2, "\n", 0, 0, 0 );
1766 #else
1767                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1768 #endif
1769
1770 #endif
1771
1772                 /* loop through the writers */
1773 #ifdef HAVE_WINSOCK
1774                 for ( i = 0; i < writefds.fd_count; i++ )
1775 #else
1776                 for ( i = 0; i < nfds; i++ )
1777 #endif
1778                 {
1779                         ber_socket_t wd;
1780                         int is_listener = 0;
1781 #ifdef HAVE_WINSOCK
1782                         wd = writefds.fd_array[i];
1783 #else
1784                         if( ! FD_ISSET( i, &writefds ) ) {
1785                                 continue;
1786                         }
1787                         wd = i;
1788 #endif
1789
1790                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1791                                 if ( i == slap_listeners[l]->sl_sd ) {
1792 #ifdef LDAP_CONNECTIONLESS
1793                                         if (slap_listeners[l]->sl_is_udp) continue;
1794 #endif
1795                                         is_listener = 1;
1796                                         break;
1797                                 }
1798                         }
1799                         if ( is_listener ) {
1800                                 continue;
1801                         }
1802 #ifdef NEW_LOGGING
1803                         LDAP_LOG( CONNECTION, DETAIL2,
1804                                 "slapd_daemon_task: write active on %d\n", wd, 0, 0 );
1805 #else
1806                         Debug( LDAP_DEBUG_CONNS,
1807                                 "daemon: write active on %d\n",
1808                                 wd, 0, 0 );
1809 #endif
1810                         /*
1811                          * NOTE: it is possible that the connection was closed
1812                          * and that the stream is now inactive.
1813                          * connection_write() must valid the stream is still
1814                          * active.
1815                          */
1816
1817                         if ( connection_write( wd ) < 0 ) {
1818                                 FD_CLR( (unsigned) wd, &readfds );
1819                                 slapd_close( wd );
1820                         }
1821                 }
1822
1823 #ifdef HAVE_WINSOCK
1824                 for ( i = 0; i < readfds.fd_count; i++ )
1825 #else
1826                 for ( i = 0; i < nfds; i++ )
1827 #endif
1828                 {
1829                         ber_socket_t rd;
1830                         int is_listener = 0;
1831
1832 #ifdef HAVE_WINSOCK
1833                         rd = readfds.fd_array[i];
1834 #else
1835                         if( ! FD_ISSET( i, &readfds ) ) {
1836                                 continue;
1837                         }
1838                         rd = i;
1839 #endif
1840
1841                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1842                                 if ( rd == slap_listeners[l]->sl_sd ) {
1843 #ifdef LDAP_CONNECTIONLESS
1844                                         if (slap_listeners[l]->sl_is_udp) continue;
1845 #endif
1846                                         is_listener = 1;
1847                                         break;
1848                                 }
1849                         }
1850                         if ( is_listener ) {
1851                                 continue;
1852                         }
1853
1854 #ifdef NEW_LOGGING
1855                         LDAP_LOG( CONNECTION, DETAIL2,
1856                                 "slapd_daemon_task: read activity on %d\n", rd, 0, 0 );
1857 #else
1858                         Debug ( LDAP_DEBUG_CONNS,
1859                                 "daemon: read activity on %d\n", rd, 0, 0 );
1860 #endif
1861                         /*
1862                          * NOTE: it is possible that the connection was closed
1863                          * and that the stream is now inactive.
1864                          * connection_read() must valid the stream is still
1865                          * active.
1866                          */
1867
1868                         if ( connection_read( rd ) < 0 ) {
1869                                 slapd_close( rd );
1870                         }
1871                 }
1872                 ldap_pvt_thread_yield();
1873         }
1874
1875         if( slapd_shutdown == 1 ) {
1876 #ifdef NEW_LOGGING
1877                 LDAP_LOG( CONNECTION, CRIT,
1878                    "slapd_daemon_task: shutdown requested and initiated.\n", 0, 0, 0 );
1879 #else
1880                 Debug( LDAP_DEBUG_TRACE,
1881                         "daemon: shutdown requested and initiated.\n",
1882                         0, 0, 0 );
1883 #endif
1884
1885         } else if ( slapd_shutdown == 2 ) {
1886 #ifdef HAVE_NT_SERVICE_MANAGER
1887 #ifdef NEW_LOGGING
1888                         LDAP_LOG( CONNECTION, CRIT,
1889                            "slapd_daemon_task: shutdown initiated by Service Manager.\n",
1890                            0, 0, 0);
1891 #else
1892                         Debug( LDAP_DEBUG_TRACE,
1893                                "daemon: shutdown initiated by Service Manager.\n",
1894                                0, 0, 0);
1895 #endif
1896 #else /* !HAVE_NT_SERVICE_MANAGER */
1897 #ifdef NEW_LOGGING
1898                         LDAP_LOG( CONNECTION, CRIT,
1899                            "slapd_daemon_task: abnormal condition, "
1900                            "shutdown initiated.\n", 0, 0, 0 );
1901 #else
1902                         Debug( LDAP_DEBUG_TRACE,
1903                                "daemon: abnormal condition, shutdown initiated.\n",
1904                                0, 0, 0 );
1905 #endif
1906 #endif /* !HAVE_NT_SERVICE_MANAGER */
1907         } else {
1908 #ifdef NEW_LOGGING
1909                 LDAP_LOG( CONNECTION, CRIT,
1910                    "slapd_daemon_task: no active streams, shutdown initiated.\n",
1911                    0, 0, 0 );
1912 #else
1913                 Debug( LDAP_DEBUG_TRACE,
1914                        "daemon: no active streams, shutdown initiated.\n",
1915                        0, 0, 0 );
1916 #endif
1917         }
1918
1919         if( slapd_gentle_shutdown != 2 )
1920                 close_listeners ( 0 );
1921         free ( slap_listeners );
1922         slap_listeners = NULL;
1923
1924 #ifdef NEW_LOGGING
1925         LDAP_LOG( CONNECTION, CRIT,
1926                 "slapd_daemon_task: shutdown waiting for %d threads to terminate.\n",
1927                 ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1928 #else
1929         Debug( LDAP_DEBUG_ANY,
1930             "slapd shutdown: waiting for %d threads to terminate\n",
1931             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1932 #endif
1933         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1934
1935         return NULL;
1936 }
1937
1938
1939 int slapd_daemon( void )
1940 {
1941         int rc;
1942
1943         connections_init();
1944
1945 #define SLAPD_LISTENER_THREAD 1
1946 #if defined( SLAPD_LISTENER_THREAD )
1947         {
1948                 ldap_pvt_thread_t       listener_tid;
1949
1950                 /* listener as a separate THREAD */
1951                 rc = ldap_pvt_thread_create( &listener_tid,
1952                         0, slapd_daemon_task, NULL );
1953
1954                 if ( rc != 0 ) {
1955 #ifdef NEW_LOGGING
1956                         LDAP_LOG( CONNECTION, ERR,
1957                                 "slapd_daemon: listener ldap_pvt_thread_create failed (%d).\n",
1958                                 rc, 0, 0 );
1959 #else
1960                         Debug( LDAP_DEBUG_ANY,
1961                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
1962 #endif
1963                         return rc;
1964                 }
1965
1966                 /* wait for the listener thread to complete */
1967                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
1968         }
1969 #else
1970         /* experimental code */
1971         slapd_daemon_task( NULL );
1972 #endif
1973
1974         return 0;
1975
1976 }
1977
1978 int sockinit(void)
1979 {
1980 #if defined( HAVE_WINSOCK2 )
1981     WORD wVersionRequested;
1982         WSADATA wsaData;
1983         int err;
1984
1985         wVersionRequested = MAKEWORD( 2, 0 );
1986
1987         err = WSAStartup( wVersionRequested, &wsaData );
1988         if ( err != 0 ) {
1989                 /* Tell the user that we couldn't find a usable */
1990                 /* WinSock DLL.                                  */
1991                 return -1;
1992         }
1993
1994         /* Confirm that the WinSock DLL supports 2.0.*/
1995         /* Note that if the DLL supports versions greater    */
1996         /* than 2.0 in addition to 2.0, it will still return */
1997         /* 2.0 in wVersion since that is the version we      */
1998         /* requested.                                        */
1999
2000         if ( LOBYTE( wsaData.wVersion ) != 2 ||
2001                 HIBYTE( wsaData.wVersion ) != 0 )
2002         {
2003             /* Tell the user that we couldn't find a usable */
2004             /* WinSock DLL.                                  */
2005             WSACleanup();
2006             return -1;
2007         }
2008
2009         /* The WinSock DLL is acceptable. Proceed. */
2010 #elif defined( HAVE_WINSOCK )
2011         WSADATA wsaData;
2012         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
2013             return -1;
2014         }
2015 #endif
2016         return 0;
2017 }
2018
2019 int sockdestroy(void)
2020 {
2021 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2022         WSACleanup();
2023 #endif
2024         return 0;
2025 }
2026
2027 RETSIGTYPE
2028 slap_sig_shutdown( int sig )
2029 {
2030 #ifdef NEW_LOGGING
2031         LDAP_LOG( CONNECTION, CRIT,
2032                 "slap_sig_shutdown: signal %d\n", sig, 0, 0 );
2033 #else
2034         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2035 #endif
2036
2037         /*
2038          * If the NT Service Manager is controlling the server, we don't
2039          * want SIGBREAK to kill the server. For some strange reason,
2040          * SIGBREAK is generated when a user logs out.
2041          */
2042
2043 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2044         if (is_NT_Service && sig == SIGBREAK)
2045 #ifdef NEW_LOGGING
2046             LDAP_LOG( CONNECTION, CRIT,
2047                     "slap_sig_shutdown: SIGBREAK ignored.\n", 0, 0, 0 );
2048 #else
2049             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
2050                   0, 0, 0);
2051 #endif
2052         else
2053 #endif
2054 #ifdef SIGHUP
2055         if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0)
2056                 slapd_gentle_shutdown = 1;
2057         else
2058 #endif
2059         slapd_shutdown = 1;
2060
2061         WAKE_LISTENER(1);
2062
2063         /* reinstall self */
2064         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2065 }
2066
2067 RETSIGTYPE
2068 slap_sig_wake( int sig )
2069 {
2070         WAKE_LISTENER(1);
2071
2072         /* reinstall self */
2073         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2074 }
2075
2076
2077 void slapd_add_internal(ber_socket_t s) {
2078         slapd_add(s);
2079 }
2080
2081 Listener ** slapd_get_listeners(void) {
2082         return slap_listeners;
2083 }