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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2000 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/signal.h>
  14 #include <ac/socket.h>
  15 #include <ac/string.h>
  16 #include <ac/time.h>
  17 #include <ac/unistd.h>
  18
  19 #include "ldap_pvt.h"
  20 #include "lutil.h"
  21 #include "slap.h"
  22
  23 #ifdef HAVE_TCPD
  24 #include <tcpd.h>
  25
  26 int allow_severity = LOG_INFO;
  27 int deny_severity = LOG_NOTICE;
  28 #endif /* TCP Wrappers */
  29
  30 #ifdef LDAP_PF_LOCAL
  31 #include <sys/stat.h>
  32 #endif /* LDAP_PF_LOCAL */
  33
  34 /* globals */
  35 time_t starttime;
  36 ber_socket_t dtblsize;
  37
  38 typedef union slap_sockaddr {
  39         struct sockaddr sa_addr;
  40         struct sockaddr_in sa_in_addr;
  41 #ifdef LDAP_PF_INET6
  42         struct sockaddr_in6 sa_in6_addr;
  43 #endif
  44 #ifdef LDAP_PF_LOCAL
  45         struct sockaddr_un sa_un_addr;
  46 #endif
  47 } Sockaddr;
  48
  49 typedef struct slap_listener {
  50         char* sl_url;
  51         char* sl_name;
  52 #ifdef HAVE_TLS
  53         int             sl_is_tls;
  54 #endif
  55         ber_socket_t            sl_sd;
  56         Sockaddr sl_sa;
  57 #define sl_addr sl_sa.sa_in_addr
  58 } Listener;
  59
  60 Listener **slap_listeners = NULL;
  61
  62 static ber_socket_t wake_sds[2];
  63
  64 #ifdef NO_THREADS
  65 static int waking;
  66 #define WAKE_LISTENER(w) \
  67 ((w && !waking) ? tcp_write( wake_sds[1], "0", 1 ), waking=1 : 0)
  68 #else
  69 #define WAKE_LISTENER(w) \
  70 do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0)
  71 #endif
  72
  73 #ifdef HAVE_NT_SERVICE_MANAGER
  74 /* in nt_main.c */
  75 extern ldap_pvt_thread_cond_t                   started_event;
  76 extern int        is_NT_Service;
  77 #endif
  78
  79 #ifndef HAVE_WINSOCK
  80 static
  81 #endif
  82 volatile sig_atomic_t slapd_shutdown = 0;
  83
  84 static ldap_pvt_thread_t        listener_tid;
  85
  86 static struct slap_daemon {
  87         ldap_pvt_thread_mutex_t sd_mutex;
  88
  89         int sd_nactives;
  90
  91 #ifndef HAVE_WINSOCK
  92         /* In winsock, accept() returns values higher than dtblsize
  93                 so don't bother with this optimization */
  94         int sd_nfds;
  95 #endif
  96
  97         fd_set sd_actives;
  98         fd_set sd_readers;
  99         fd_set sd_writers;
 100 } slap_daemon;
 101
 102 /*
 103  * Add a descriptor to daemon control
 104  */
 105 static void slapd_add(ber_socket_t s) {
 106         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 107
 108         assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
 109         assert( !FD_ISSET( s, &slap_daemon.sd_readers ));
 110         assert( !FD_ISSET( s, &slap_daemon.sd_writers ));
 111
 112 #ifndef HAVE_WINSOCK
 113         if (s >= slap_daemon.sd_nfds) {
 114                 slap_daemon.sd_nfds = s + 1;
 115         }
 116 #endif
 117
 118         FD_SET( s, &slap_daemon.sd_actives );
 119         FD_SET( s, &slap_daemon.sd_readers );
 120
 121         Debug( LDAP_DEBUG_CONNS, "daemon: added %ld%s%s\n",
 122                 (long) s,
 123             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 124                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 125
 126         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 127 }
 128
 129 /*
 130  * Remove the descriptor from daemon control
 131  */
 132 void slapd_remove(ber_socket_t s, int wake) {
 133         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 134
 135         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 136                 (long) s,
 137             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 138                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 139
 140         FD_CLR( s, &slap_daemon.sd_actives );
 141         FD_CLR( s, &slap_daemon.sd_readers );
 142         FD_CLR( s, &slap_daemon.sd_writers );
 143
 144         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 145         WAKE_LISTENER(wake);
 146 }
 147
 148 void slapd_clr_write(ber_socket_t s, int wake) {
 149         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 150
 151         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 152         FD_CLR( s, &slap_daemon.sd_writers );
 153
 154         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 155         WAKE_LISTENER(wake);
 156 }
 157
 158 void slapd_set_write(ber_socket_t s, int wake) {
 159         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 160
 161         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 162         if (!FD_ISSET(s, &slap_daemon.sd_writers))
 163             FD_SET( (unsigned) s, &slap_daemon.sd_writers );
 164
 165         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 166         WAKE_LISTENER(wake);
 167 }
 168
 169 void slapd_clr_read(ber_socket_t s, int wake) {
 170         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 171
 172         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 173         FD_CLR( s, &slap_daemon.sd_readers );
 174
 175         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 176         WAKE_LISTENER(wake);
 177 }
 178
 179 void slapd_set_read(ber_socket_t s, int wake) {
 180         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 181
 182         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 183         if (!FD_ISSET(s, &slap_daemon.sd_readers))
 184             FD_SET( s, &slap_daemon.sd_readers );
 185
 186         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 187         WAKE_LISTENER(wake);
 188 }
 189
 190 static void slapd_close(ber_socket_t s) {
 191         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 192                 (long) s, 0, 0 );
 193         tcp_close(s);
 194 }
 195
 196
 197 static Listener * open_listener( const char* url )
 198 {
 199         int     tmp, rc;
 200         Listener l;
 201         Listener *li;
 202         LDAPURLDesc *lud;
 203         char *s;
 204         int port;
 205 #ifdef HAVE_GETADDRINFO
 206         char serv[7];
 207         struct addrinfo hints, *res, *sai;
 208         int err;
 209 #endif
 210
 211         rc = ldap_url_parse( url, &lud );
 212
 213         if( rc != LDAP_URL_SUCCESS ) {
 214                 Debug( LDAP_DEBUG_ANY,
 215                         "daemon: listen URL \"%s\" parse error=%d\n",
 216                         url, rc, 0 );
 217                 return NULL;
 218         }
 219
 220 #ifndef HAVE_TLS
 221         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 222                 Debug( LDAP_DEBUG_ANY,
 223                         "daemon: TLS not supported (%s)\n",
 224                         url, 0, 0 );
 225                 ldap_free_urldesc( lud );
 226                 return NULL;
 227         }
 228
 229         if(! lud->lud_port ) {
 230                 lud->lud_port = LDAP_PORT;
 231         }
 232
 233 #else
 234         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 235
 236         if(! lud->lud_port ) {
 237                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 238         }
 239 #endif
 240
 241 #ifdef HAVE_GETADDRINFO
 242         memset( &hints, '\0', sizeof(hints) );
 243         hints.ai_flags = AI_PASSIVE;
 244         hints.ai_family = AF_UNSPEC;
 245         hints.ai_socktype = SOCK_STREAM;
 246
 247 #  ifdef LDAP_PF_LOCAL
 248         if ( ldap_pvt_url_scheme2proto(lud->lud_scheme) == LDAP_PROTO_IPC ) {
 249                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 250                         err = getaddrinfo(NULL, LDAPI_SOCK, &hints, &res);
 251                         if (!err)
 252                                 unlink( LDAPI_SOCK );
 253                 } else {
 254                         err = getaddrinfo(NULL, lud->lud_host, &hints, &res);
 255                         if (!err)
 256                                 unlink( lud->lud_host );
 257                 }
 258         } else
 259 #  endif /* LDAP_PF_LOCAL */
 260         {
 261                 snprintf(serv, sizeof serv, "%d", lud->lud_port);
 262                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 263                         || strcmp(lud->lud_host, "*") == 0 )
 264                 {
 265                         err = getaddrinfo(NULL, serv, &hints, &res);
 266                 } else {
 267                         err = getaddrinfo(lud->lud_host, serv, &hints, &res);
 268                 }
 269         }
 270
 271         if ( err ) {
 272                 Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed\n", 0, 0, 0);
 273                 ldap_free_urldesc( lud );
 274                 return NULL;
 275         }
 276
 277         ldap_free_urldesc( lud );
 278         sai = res;
 279         do {
 280                 if ( (sai->ai_family != AF_INET)
 281 #  ifdef LDAP_PF_INET6
 282                      && (sai->ai_family != AF_INET6)
 283 #  endif
 284 #  ifdef LDAP_PF_LOCAL
 285                      && (sai->ai_family != AF_LOCAL)
 286 #  endif
 287                      )
 288                         continue;
 289                 l.sl_sd = socket( sai->ai_family, sai->ai_socktype, sai->ai_protocol);
 290                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 291                         int err = sock_errno();
 292                         Debug( LDAP_DEBUG_ANY,
 293                                 "daemon: socket() failed errno=%d (%s)\n", err,
 294                                 sock_errstr(err), 0 );
 295                         continue;
 296                 }
 297
 298                 if ( sai->ai_family != AF_LOCAL ) {
 299 #else
 300
 301         if ( ldap_pvt_url_scheme2proto(lud->lud_scheme) == LDAP_PROTO_IPC ) {
 302 #ifdef LDAP_PF_LOCAL
 303                 port = 0;
 304                 (void) memset( (void *)&l.sl_sa.sa_un_addr, '\0', sizeof(l.sl_sa.sa_un_addr) );
 305
 306                 l.sl_sa.sa_un_addr.sun_family = AF_LOCAL;
 307
 308                 /* hack: overload the host to be the path */
 309                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 310                         strcpy( l.sl_sa.sa_un_addr.sun_path, LDAPI_SOCK );
 311                 } else {
 312                         if ( strlen(lud->lud_host) > (sizeof(l.sl_sa.sa_un_addr.sun_path) - 1) ) {
 313                                 Debug( LDAP_DEBUG_ANY,
 314                                         "daemon: domain socket path (%s) too long in URL: %s",
 315                                         lud->lud_host, url, 0);
 316                                 ldap_free_urldesc( lud );
 317                                 return NULL;
 318                         }
 319                         strcpy( l.sl_sa.sa_un_addr.sun_path, lud->lud_host );
 320                 }
 321                 unlink( l.sl_sa.sa_un_addr.sun_path );
 322 #if 0
 323                 /* I don't think we need to set this. */
 324                 l.sl_sa.sa_un_addr.sun_len = sizeof( l.sl_sa.sa_un_addr.sun_len ) +
 325                         sizeof( l.sl_sa.sa_un_addr.sun_family ) +
 326                         strlen( l.sl_sa.sa_un_addr.sun_path ) + 1;
 327 #endif
 328 #else
 329                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 330                         url, 0, 0);
 331                 ldap_free_urldesc( lud );
 332                 return NULL;
 333 #endif /* LDAP_PF_LOCAL */
 334         } else {
 335
 336         port = lud->lud_port;
 337
 338         (void) memset( (void*) &l.sl_addr, '\0', sizeof(l.sl_addr) );
 339
 340         l.sl_addr.sin_family = AF_INET;
 341         l.sl_addr.sin_port = htons( (unsigned short) lud->lud_port );
 342
 343         if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 344                 || strcmp(lud->lud_host, "*") == 0 )
 345         {
 346                 l.sl_addr.sin_addr.s_addr = htonl(INADDR_ANY);
 347
 348         } else {
 349                 /* host or address was specified */
 350                 if( !inet_aton( lud->lud_host, &l.sl_addr.sin_addr ) ) {
 351                         struct hostent *he = gethostbyname( lud->lud_host );
 352                         if( he == NULL ) {
 353                                 Debug( LDAP_DEBUG_ANY,
 354                                         "daemon: invalid host (%s) in URL: %s",
 355                                         lud->lud_host, url, 0);
 356                                 ldap_free_urldesc( lud );
 357                                 return NULL;
 358                         }
 359
 360                         AC_MEMCPY( &l.sl_addr.sin_addr, he->h_addr,
 361                                sizeof( l.sl_addr.sin_addr ) );
 362                 }
 363         }
 364         }
 365
 366         ldap_free_urldesc( lud );
 367
 368         l.sl_sd = socket( l.sl_sa.sa_addr.sa_family, SOCK_STREAM, 0 );
 369         if ( l.sl_sd == AC_SOCKET_INVALID ) {
 370                 int err = sock_errno();
 371                 Debug( LDAP_DEBUG_ANY,
 372                         "daemon: socket() failed errno=%d (%s)\n", err,
 373                         sock_errstr(err), 0 );
 374                 return NULL;
 375         }
 376
 377 #ifndef HAVE_WINSOCK
 378         if ( l.sl_sd >= dtblsize ) {
 379                 Debug( LDAP_DEBUG_ANY,
 380                         "daemon: listener descriptor %ld is too great %ld\n",
 381                         (long) l.sl_sd, (long) dtblsize, 0 );
 382                 tcp_close( l.sl_sd );
 383                 return NULL;
 384         }
 385 #endif
 386
 387 #ifdef LDAP_PF_LOCAL
 388         /* for IPv4 and IPv6 sockets only */
 389         if ( l.sl_sa.sa_addr.sa_family != AF_LOCAL ) {
 390 #endif /* LDAP_PF_LOCAL */
 391 #endif /* HAVE_GETADDRINFO */
 392
 393 #ifdef SO_REUSEADDR
 394         /* enable address reuse */
 395         tmp = 1;
 396         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 397                 (char *) &tmp, sizeof(tmp) );
 398         if ( rc == AC_SOCKET_ERROR ) {
 399                 int err = sock_errno();
 400                 Debug( LDAP_DEBUG_ANY,
 401                "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 402                 (long) l.sl_sd, err, sock_errstr(err) );
 403         }
 404 #endif
 405 #ifdef SO_KEEPALIVE
 406         /* enable keep alives */
 407         tmp = 1;
 408         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_KEEPALIVE,
 409                 (char *) &tmp, sizeof(tmp) );
 410         if ( rc == AC_SOCKET_ERROR ) {
 411                 int err = sock_errno();
 412                 Debug( LDAP_DEBUG_ANY,
 413                         "slapd(%ld): setsockopt(SO_KEEPALIVE) failed errno=%d (%s)\n",
 414                 (long) l.sl_sd, err, sock_errstr(err) );
 415         }
 416 #endif
 417 #ifdef TCP_NODELAY
 418         /* enable no delay */
 419         tmp = 1;
 420         rc = setsockopt( l.sl_sd, IPPROTO_TCP, TCP_NODELAY,
 421                 (char *)&tmp, sizeof(tmp) );
 422         if ( rc == AC_SOCKET_ERROR ) {
 423                 int err = sock_errno();
 424                 Debug( LDAP_DEBUG_ANY,
 425                         "slapd(%ld): setsockopt(TCP_NODELAY) failed errno=%d (%s)\n",
 426                 (long) l.sl_sd, err, sock_errstr(err) );
 427         }
 428 #endif
 429
 430 #ifdef HAVE_GETADDRINFO
 431                 } /* sai->ai_family != AF_LOCAL */
 432                 if (!bind(l.sl_sd, sai->ai_addr, sai->ai_addrlen))
 433                         break;
 434                 err = sock_errno();
 435                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 436                         (long) l.sl_sd, err, sock_errstr(err) );
 437                 tcp_close( l.sl_sd );
 438         } while ((sai = sai->ai_next) != NULL);
 439
 440         if (!sai) {
 441                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed\n",
 442                         (long) l.sl_sd, 0, 0 );
 443                 return NULL;
 444         }
 445
 446         switch ( sai->ai_family ) {
 447 #  ifdef LDAP_PF_LOCAL
 448         case AF_LOCAL:
 449                 if ( chmod( (char *)sai->ai_addr, S_IRWXU ) < 0 ) {
 450                         int err = sock_errno();
 451                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 452                                 (long) l.sl_sd, err, sock_errstr(err) );
 453                         tcp_close( l.sl_sd );
 454                         return NULL;
 455                 }
 456                 l.sl_name = ch_malloc( strlen((char *)sai->ai_addr) + sizeof("PATH=") );
 457                 sprintf( l.sl_name, "PATH=%s", sai->ai_addr );
 458                 break;
 459 #  endif /* LDAP_PF_LOCAL */
 460
 461         case AF_INET: {
 462                 char addr[INET_ADDRSTRLEN];
 463                 inet_ntop( AF_INET,
 464                         &((struct sockaddr_in *)sai->ai_addr)->sin_addr,
 465                         addr, sizeof(addr) );
 466                 l.sl_name = ch_malloc( strlen(addr) + strlen(serv) + sizeof("IP=:") );
 467                 sprintf( l.sl_name, "IP=%s:%s", addr, serv );
 468         } break;
 469
 470 #  ifdef LDAP_PF_INET6
 471         case AF_INET6: {
 472                 char addr[INET6_ADDRSTRLEN];
 473                 inet_ntop( AF_INET6,
 474                         &((struct sockaddr_in6 *)sai->ai_addr)->sin6_addr,
 475                         addr, sizeof addr);
 476                 l.sl_name = ch_malloc( strlen(addr) + strlen(serv) + sizeof("IP= ") );
 477                 sprintf( l.sl_name, "IP=%s %s", addr, serv );
 478         } break;
 479 #  endif /* LDAP_PF_INET6 */
 480
 481         default:
 482                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 483                         (int) sai->ai_family, 0, 0 );
 484                 break;
 485         }
 486 #else
 487 #ifdef LDAP_PF_LOCAL
 488         /* close conditional */
 489         }
 490 #endif /* LDAP_PF_LOCAL */
 491
 492         switch ( l.sl_sa.sa_addr.sa_family ) {
 493 #ifdef LDAP_PF_LOCAL
 494                 case AF_LOCAL:
 495                         rc = bind( l.sl_sd, (struct sockaddr *)&l.sl_sa,
 496                                 sizeof(l.sl_sa.sa_un_addr) );
 497                         break;
 498 #endif
 499
 500                 case AF_INET:
 501                         rc = bind( l.sl_sd, (struct sockaddr *)&l.sl_sa,
 502                                 sizeof(l.sl_sa.sa_in_addr) );
 503                         break;
 504
 505                 default:
 506                         rc = AC_SOCKET_ERROR;
 507                         errno = EINVAL;
 508                         break;
 509         }
 510
 511         if ( rc == AC_SOCKET_ERROR ) {
 512                 int err = sock_errno();
 513                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 514                 (long) l.sl_sd, err, sock_errstr(err) );
 515                 tcp_close( l.sl_sd );
 516                 return NULL;
 517         }
 518
 519         switch ( l.sl_sa.sa_addr.sa_family ) {
 520 #ifdef LDAP_PF_LOCAL
 521                 case AF_LOCAL:
 522                         if ( chmod( l.sl_sa.sa_un_addr.sun_path, S_IRWXU ) < 0 ) {
 523                                 int err = sock_errno();
 524                                 Debug( LDAP_DEBUG_ANY,
 525                                         "daemon: chmod(%ld) failed errno=%d (%s)",
 526                                         (long) l.sl_sd, err, sock_errstr(err) );
 527                                 tcp_close( l.sl_sd );
 528                                 return NULL;
 529                         }
 530
 531                         l.sl_name = ch_malloc( strlen(l.sl_sa.sa_un_addr.sun_path)
 532                                 + sizeof("PATH=") );
 533                         sprintf( l.sl_name, "PATH=%s", l.sl_sa.sa_un_addr.sun_path );
 534                         break;
 535 #endif /* LDAP_PF_LOCAL */
 536
 537                 case AF_INET:
 538                         l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65336") );
 539                         s = inet_ntoa( l.sl_addr.sin_addr );
 540                         sprintf( l.sl_name, "IP=%s:%d",
 541                                 s != NULL ? s : "unknown" , port );
 542                         break;
 543
 544                 default:
 545                         l.sl_name = ch_strdup( "UNKNOWN" );
 546                         break;
 547         }
 548
 549 #endif /* HAVE_GETADDRINFO */
 550
 551         l.sl_url = ch_strdup( url );
 552         li = ch_malloc( sizeof( Listener ) );
 553         *li = l;
 554
 555         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 556                 l.sl_url, 0, 0 );
 557
 558         return li;
 559 }
 560
 561 static int sockinit(void);
 562 static int sockdestroy(void);
 563
 564 int slapd_daemon_init( const char *urls )
 565 {
 566         int i, rc;
 567         char **u;
 568
 569         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 570                 urls ? urls : "<null>", 0, 0 );
 571
 572         if( (rc = sockinit()) != 0 ) {
 573                 return rc;
 574         }
 575
 576 #ifdef HAVE_SYSCONF
 577         dtblsize = sysconf( _SC_OPEN_MAX );
 578 #elif HAVE_GETDTABLESIZE
 579         dtblsize = getdtablesize();
 580 #else
 581         dtblsize = FD_SETSIZE;
 582 #endif
 583
 584 #ifdef FD_SETSIZE
 585         if(dtblsize > FD_SETSIZE) {
 586                 dtblsize = FD_SETSIZE;
 587         }
 588 #endif  /* !FD_SETSIZE */
 589
 590         /* open a pipe (or something equivalent connected to itself).
 591          * we write a byte on this fd whenever we catch a signal. The main
 592          * loop will be select'ing on this socket, and will wake up when
 593          * this byte arrives.
 594          */
 595         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 596                 Debug( LDAP_DEBUG_ANY,
 597                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 598                 return rc;
 599         }
 600
 601         FD_ZERO( &slap_daemon.sd_readers );
 602         FD_ZERO( &slap_daemon.sd_writers );
 603
 604         if( urls == NULL ) {
 605                 urls = "ldap:///";
 606         }
 607
 608         u = str2charray( urls, " " );
 609
 610         if( u == NULL || u[0] == NULL ) {
 611                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
 612                         urls, 0, 0 );
 613
 614                 return -1;
 615         }
 616
 617         for( i=0; u[i] != NULL; i++ ) {
 618                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
 619                         u[i], 0, 0 );
 620         }
 621
 622         if( i == 0 ) {
 623                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
 624                         urls, 0, 0 );
 625                 charray_free( u );
 626                 return -1;
 627         }
 628
 629         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
 630                 i, 0, 0 );
 631
 632         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
 633
 634         for(i = 0; u[i] != NULL; i++ ) {
 635                 slap_listeners[i] = open_listener( u[i] );
 636
 637                 if( slap_listeners[i] == NULL ) {
 638                         charray_free( u );
 639                         return -1;
 640                 }
 641         }
 642         slap_listeners[i] = NULL;
 643
 644         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
 645                 i, 0, 0 );
 646
 647         charray_free( u );
 648         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
 649         return !i;
 650 }
 651
 652
 653 int
 654 slapd_daemon_destroy(void)
 655 {
 656         connections_destroy();
 657         tcp_close( wake_sds[1] );
 658         tcp_close( wake_sds[0] );
 659         sockdestroy();
 660         return 0;
 661 }
 662
 663
 664 static void *
 665 slapd_daemon_task(
 666         void *ptr
 667 )
 668 {
 669         int l;
 670         time_t  last_idle_check = slap_get_time();
 671         time( &starttime );
 672
 673         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 674                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 675                         continue;
 676
 677                 if ( listen( slap_listeners[l]->sl_sd, 5 ) == -1 ) {
 678                         int err = sock_errno();
 679                         Debug( LDAP_DEBUG_ANY,
 680                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
 681                                         slap_listeners[l]->sl_url, err,
 682                                         sock_errstr(err) );
 683                         return( (void*)-1 );
 684                 }
 685
 686                 slapd_add( slap_listeners[l]->sl_sd );
 687         }
 688
 689 #ifdef HAVE_NT_SERVICE_MANAGER
 690         if ( started_event != NULL ) {
 691                 ldap_pvt_thread_cond_signal( &started_event );
 692         }
 693 #endif
 694         /* initialization complete. Here comes the loop. */
 695
 696         while ( !slapd_shutdown ) {
 697                 ber_socket_t i;
 698                 int ns;
 699                 int at;
 700                 ber_socket_t nfds;
 701 #define SLAPD_EBADF_LIMIT 16
 702                 int ebadf = 0;
 703
 704 #define SLAPD_IDLE_CHECK_LIMIT 4
 705                 time_t  now = slap_get_time();
 706
 707
 708                 fd_set                  readfds;
 709                 fd_set                  writefds;
 710                 Sockaddr                from;
 711
 712 #if defined(SLAPD_RLOOKUPS)
 713         struct hostent          *hp;
 714 #endif
 715                 struct timeval          zero;
 716                 struct timeval          *tvp;
 717
 718                 if( global_idletimeout > 0 && difftime(
 719                         last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT,
 720                         now ) < 0 )
 721                 {
 722                         connections_timeout_idle(now);
 723                 }
 724
 725                 FD_ZERO( &writefds );
 726                 FD_ZERO( &readfds );
 727
 728                 zero.tv_sec = 0;
 729                 zero.tv_usec = 0;
 730
 731                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 732
 733 #ifdef FD_SET_MANUAL_COPY
 734                 for( s = 0; s < nfds; s++ ) {
 735                         if(FD_ISSET( &slap_sd_readers, s )) {
 736                                 FD_SET( s, &readfds );
 737                         }
 738                         if(FD_ISSET( &slap_sd_writers, s )) {
 739                                 FD_SET( s, &writefds );
 740                         }
 741                 }
 742 #else
 743                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
 744                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
 745 #endif
 746                 assert(!FD_ISSET(wake_sds[0], &readfds));
 747                 FD_SET( wake_sds[0], &readfds );
 748
 749                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 750                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 751                                 continue;
 752                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
 753                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
 754                 }
 755
 756 #ifndef HAVE_WINSOCK
 757                 nfds = slap_daemon.sd_nfds;
 758 #else
 759                 nfds = dtblsize;
 760 #endif
 761
 762                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 763
 764                 at = ldap_pvt_thread_pool_backload(&connection_pool);
 765
 766 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
 767                 tvp = NULL;
 768 #else
 769                 tvp = at ? &zero : NULL;
 770 #endif
 771
 772                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 773                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 774                                 continue;
 775
 776                         Debug( LDAP_DEBUG_CONNS,
 777                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
 778                                         slap_listeners[l]->sl_sd, at,
 779                                         tvp == NULL ? "NULL" : "zero" );
 780                 }
 781
 782                 switch(ns = select( nfds, &readfds,
 783 #ifdef HAVE_WINSOCK
 784                         /* don't pass empty fd_set */
 785                         ( writefds.fd_count > 0 ? &writefds : NULL ),
 786 #else
 787                         &writefds,
 788 #endif
 789                         NULL, tvp ))
 790                 {
 791                 case -1: {      /* failure - try again */
 792                                 int err = sock_errno();
 793
 794                                 if( err == EBADF
 795 #ifdef WSAENOTSOCK
 796                                         /* you'd think this would be EBADF */
 797                                         || err == WSAENOTSOCK
 798 #endif
 799                                 ) {
 800                                         if (++ebadf < SLAPD_EBADF_LIMIT)
 801                                                 continue;
 802                                 }
 803
 804                                 if( err != EINTR ) {
 805                                         Debug( LDAP_DEBUG_CONNS,
 806                                                 "daemon: select failed (%d): %s\n",
 807                                                 err, sock_errstr(err), 0 );
 808
 809                                         slapd_shutdown = -1;
 810                                 }
 811                         }
 812                         continue;
 813
 814                 case 0:         /* timeout - let threads run */
 815                         ebadf = 0;
 816                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
 817                             0, 0, 0 );
 818                 ldap_pvt_thread_yield();
 819                         continue;
 820
 821                 default:        /* something happened - deal with it */
 822                         ebadf = 0;
 823                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
 824                                 ns, 0, 0 );
 825                         /* FALL THRU */
 826                 }
 827
 828                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
 829                         char c[BUFSIZ];
 830                         tcp_read( wake_sds[0], c, sizeof(c) );
 831 #ifdef NO_THREADS
 832                         waking = 0;
 833 #endif
 834                         continue;
 835                 }
 836
 837                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 838                         ber_int_t s;
 839                         socklen_t len = sizeof(from);
 840                         long id;
 841                         slap_ssf_t ssf = 0;
 842                         char *authid = NULL;
 843
 844                         char    *dnsname;
 845                         char    *peeraddr;
 846 #ifdef LDAP_PF_LOCAL
 847                         char    peername[MAXPATHLEN + sizeof("PATH=")];
 848 #elif defined(LDAP_PF_INET6)
 849                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
 850 #else
 851                         char    peername[sizeof("IP=255.255.255.255:65336")];
 852 #endif /* LDAP_PF_LOCAL */
 853
 854                         peername[0] = '\0';
 855
 856                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 857                                 continue;
 858
 859                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
 860                                 continue;
 861
 862                         if ( (s = accept( slap_listeners[l]->sl_sd,
 863                                 (struct sockaddr *) &from, &len )) == AC_SOCKET_INVALID )
 864                         {
 865                                 int err = sock_errno();
 866                                 Debug( LDAP_DEBUG_ANY,
 867                                     "daemon: accept(%ld) failed errno=%d (%s)\n",
 868                                     (long) slap_listeners[l]->sl_sd, err,
 869                                     sock_errstr(err) );
 870                                 continue;
 871                         }
 872
 873 #ifndef HAVE_WINSOCK
 874                         /* make sure descriptor number isn't too great */
 875                         if ( s >= dtblsize ) {
 876                                 Debug( LDAP_DEBUG_ANY,
 877                                         "daemon: %ld beyond descriptor table size %ld\n",
 878                                         (long) s, (long) dtblsize, 0 );
 879                                 slapd_close(s);
 880                                 continue;
 881                         }
 882 #endif
 883
 884 #ifdef LDAP_DEBUG
 885                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 886
 887                         /* newly accepted stream should not be in any of the FD SETS */
 888                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
 889                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
 890                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
 891
 892                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 893 #endif
 894
 895                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
 896                                 (long) s, 0, 0 );
 897
 898                         len = sizeof(from);
 899
 900                         if ( getpeername( s, (struct sockaddr *) &from, &len ) != 0 ) {
 901                                 int err = sock_errno();
 902                                 Debug( LDAP_DEBUG_ANY,
 903                                         "daemon: getpeername( %ld ) failed: errno=%d (%s)\n",
 904                                         (long) s, err, sock_errstr(err) );
 905                                 slapd_close(s);
 906                                 continue;
 907                         }
 908
 909                         switch ( from.sa_addr.sa_family ) {
 910 #  ifdef LDAP_PF_LOCAL
 911                         case AF_LOCAL:
 912                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
 913                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
 914                                 break;
 915 #endif /* LDAP_PF_LOCAL */
 916
 917 #  ifdef LDAP_PF_INET6
 918                         case AF_INET6:
 919                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
 920                                 peeraddr = inet_ntoa( *((struct in_addr *)
 921                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
 922                                 sprintf( peername, "IP=%s:%d",
 923                                          peeraddr != NULL ? peeraddr : "unknown",
 924                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
 925                         } else {
 926                                 char addr[INET6_ADDRSTRLEN];
 927                                 sprintf( peername, "IP=%s %d",
 928                                          inet_ntop( AF_INET6,
 929                                                     &from.sa_in6_addr.sin6_addr,
 930                                                     addr, sizeof addr) ? addr : "unknown",
 931                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
 932                         }
 933                         break;
 934 #  endif /* LDAP_PF_INET6 */
 935
 936                         case AF_INET:
 937                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
 938                         sprintf( peername, "IP=%s:%d",
 939                                 peeraddr != NULL ? peeraddr : "unknown",
 940                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
 941                                 break;
 942
 943                         default:
 944                                 slapd_close(s);
 945                                 continue;
 946                         }
 947                         if ( ( from.sa_addr.sa_family == AF_INET )
 948 #ifdef LDAP_PF_INET6
 949                                 || ( from.sa_addr.sa_family == AF_INET6 )
 950 #endif
 951                         ) {
 952 #ifdef SLAPD_RLOOKUPS
 953 #  ifdef LDAP_PF_INET6
 954                                 if ( from.sa_addr.sa_family == AF_INET6 )
 955                                         hp = gethostbyaddr(
 956                                                 (char *)&(from.sa_in6_addr.sin6_addr),
 957                                                 sizeof(from.sa_in6_addr.sin6_addr),
 958                                                 AF_INET6 );
 959                                 else
 960 #  endif LDAP_PF_INET6
 961                                 hp = gethostbyaddr(
 962                                         (char *) &(from.sa_in_addr.sin_addr),
 963                                         sizeof(from.sa_in_addr.sin_addr),
 964                                         AF_INET );
 965                                 dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
 966 #else
 967                                 dnsname = NULL;
 968 #endif /* SLAPD_RLOOKUPS */
 969
 970 #ifdef HAVE_TCPD
 971                                 if ( !hosts_ctl("slapd",
 972                                                 dnsname != NULL ? dnsname : STRING_UNKNOWN,
 973                                                 peeraddr != NULL ? peeraddr : STRING_UNKNOWN,
 974                                                 STRING_UNKNOWN ))
 975                                 {
 976                                         /* DENY ACCESS */
 977                                         Statslog( LDAP_DEBUG_ANY,
 978                                                 "fd=%ld host access from %s (%s) denied.\n",
 979                                                 (long) s,
 980                                                 dnsname != NULL ? dnsname : "unknown",
 981                                                 peeraddr != NULL ? peeraddr : "unknown",
 982                                                 0, 0 );
 983                                         slapd_close(s);
 984                                         continue;
 985                                 }
 986 #endif /* HAVE_TCPD */
 987                         }
 988
 989                         id = connection_init(s,
 990                                 slap_listeners[l]->sl_url,
 991                                 dnsname != NULL ? dnsname : "unknown",
 992                                 peername,
 993                                 slap_listeners[l]->sl_name,
 994 #ifdef HAVE_TLS
 995                                 slap_listeners[l]->sl_is_tls,
 996 #else
 997                                 0,
 998 #endif
 999                                 ssf,
1000                                 authid );
1001
1002                         if( authid ) ch_free(authid);
1003
1004                         if( id < 0 ) {
1005                                 Debug( LDAP_DEBUG_ANY,
1006                                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1007                                         (long) s,
1008                                         peername,
1009                                         slap_listeners[l]->sl_name );
1010                                 slapd_close(s);
1011                                 continue;
1012                         }
1013
1014                         Statslog( LDAP_DEBUG_STATS,
1015                                 "daemon: conn=%ld fd=%ld connection from %s (%s) accepted.\n",
1016                                 id, (long) s,
1017                                 peername,
1018                                 slap_listeners[l]->sl_name,
1019                                 0 );
1020
1021                         slapd_add( s );
1022                         continue;
1023                 }
1024
1025 #ifdef LDAP_DEBUG
1026                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1027 #ifdef HAVE_WINSOCK
1028                 for ( i = 0; i < readfds.fd_count; i++ ) {
1029                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1030                                 readfds.fd_array[i], "r", 0 );
1031                 }
1032                 for ( i = 0; i < writefds.fd_count; i++ ) {
1033                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1034                                 writefds.fd_array[i], "w", 0 );
1035                 }
1036 #else
1037                 for ( i = 0; i < nfds; i++ ) {
1038                         int     r, w;
1039                         int     is_listener = 0;
1040
1041                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1042                                 if ( i == slap_listeners[l]->sl_sd ) {
1043                                         is_listener = 1;
1044                                         break;
1045                                 }
1046                         }
1047                         if ( is_listener ) {
1048                                 continue;
1049                         }
1050                         r = FD_ISSET( i, &readfds );
1051                         w = FD_ISSET( i, &writefds );
1052                         if ( r || w ) {
1053                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1054                                     r ? "r" : "", w ? "w" : "" );
1055                         }
1056                 }
1057 #endif
1058                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1059 #endif
1060
1061                 /* loop through the writers */
1062 #ifdef HAVE_WINSOCK
1063                 for ( i = 0; i < writefds.fd_count; i++ )
1064 #else
1065                 for ( i = 0; i < nfds; i++ )
1066 #endif
1067                 {
1068                         ber_socket_t wd;
1069                         int is_listener = 0;
1070 #ifdef HAVE_WINSOCK
1071                         wd = writefds.fd_array[i];
1072 #else
1073                         if( ! FD_ISSET( i, &writefds ) ) {
1074                                 continue;
1075                         }
1076                         wd = i;
1077 #endif
1078
1079                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1080                                 if ( i == slap_listeners[l]->sl_sd ) {
1081                                         is_listener = 1;
1082                                         break;
1083                                 }
1084                         }
1085                         if ( is_listener ) {
1086                                 continue;
1087                         }
1088                         Debug( LDAP_DEBUG_CONNS,
1089                                 "daemon: write active on %d\n",
1090                                 wd, 0, 0 );
1091
1092                         /*
1093                          * NOTE: it is possible that the connection was closed
1094                          * and that the stream is now inactive.
1095                          * connection_write() must valid the stream is still
1096                          * active.
1097                          */
1098
1099                         if ( connection_write( wd ) < 0 ) {
1100                                 FD_CLR( (unsigned) wd, &readfds );
1101                                 slapd_close( wd );
1102                         }
1103                 }
1104
1105 #ifdef HAVE_WINSOCK
1106                 for ( i = 0; i < readfds.fd_count; i++ )
1107 #else
1108                 for ( i = 0; i < nfds; i++ )
1109 #endif
1110                 {
1111                         ber_socket_t rd;
1112                         int is_listener = 0;
1113
1114 #ifdef HAVE_WINSOCK
1115                         rd = readfds.fd_array[i];
1116 #else
1117                         if( ! FD_ISSET( i, &readfds ) ) {
1118                                 continue;
1119                         }
1120                         rd = i;
1121 #endif
1122
1123                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1124                                 if ( rd == slap_listeners[l]->sl_sd ) {
1125                                         is_listener = 1;
1126                                         break;
1127                                 }
1128                         }
1129                         if ( is_listener ) {
1130                                 continue;
1131                         }
1132
1133                         Debug ( LDAP_DEBUG_CONNS,
1134                                 "daemon: read activity on %d\n", rd, 0, 0 );
1135
1136                         /*
1137                          * NOTE: it is possible that the connection was closed
1138                          * and that the stream is now inactive.
1139                          * connection_read() must valid the stream is still
1140                          * active.
1141                          */
1142
1143                         if ( connection_read( rd ) < 0 ) {
1144                                 slapd_close( rd );
1145                         }
1146                 }
1147                 ldap_pvt_thread_yield();
1148         }
1149
1150         if( slapd_shutdown > 0 ) {
1151                 Debug( LDAP_DEBUG_TRACE,
1152                         "daemon: shutdown requested and initiated.\n",
1153                         0, 0, 0 );
1154
1155         } else if ( slapd_shutdown < 0 ) {
1156 #ifdef HAVE_NT_SERVICE_MANAGER
1157                 if (slapd_shutdown == -1)
1158                     Debug( LDAP_DEBUG_TRACE,
1159                           "daemon: shutdown initiated by Service Manager.\n",
1160                           0, 0, 0);
1161                 else
1162 #endif
1163                 Debug( LDAP_DEBUG_TRACE,
1164                         "daemon: abnormal condition, shutdown initiated.\n",
1165                         0, 0, 0 );
1166         } else {
1167                 Debug( LDAP_DEBUG_TRACE,
1168                         "daemon: no active streams, shutdown initiated.\n",
1169                         0, 0, 0 );
1170         }
1171
1172         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1173                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1174 #ifdef LDAP_PF_LOCAL
1175                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1176                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1177                         }
1178 #endif /* LDAP_PF_LOCAL */
1179                         slapd_close( slap_listeners[l]->sl_sd );
1180                         break;
1181                 }
1182         }
1183
1184         Debug( LDAP_DEBUG_ANY,
1185             "slapd shutdown: waiting for %d threads to terminate\n",
1186             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1187
1188         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1189
1190         return NULL;
1191 }
1192
1193
1194 int slapd_daemon( void )
1195 {
1196         int rc;
1197
1198         connections_init();
1199
1200 #define SLAPD_LISTENER_THREAD 1
1201 #if defined( SLAPD_LISTENER_THREAD ) || !defined(HAVE_PTHREADS)
1202
1203         /* listener as a separate THREAD */
1204         rc = ldap_pvt_thread_create( &listener_tid,
1205                 0, slapd_daemon_task, NULL );
1206
1207         if ( rc != 0 ) {
1208                 Debug( LDAP_DEBUG_ANY,
1209                     "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
1210                 return rc;
1211         }
1212
1213         /* wait for the listener thread to complete */
1214         ldap_pvt_thread_join( listener_tid, (void *) NULL );
1215 #else
1216         /* expermimental code */
1217         listener_tid = pthread_self();
1218         slapd_daemon_task( NULL );
1219 #endif
1220
1221         return 0;
1222
1223 }
1224
1225 int sockinit(void)
1226 {
1227 #if defined( HAVE_WINSOCK2 )
1228     WORD wVersionRequested;
1229         WSADATA wsaData;
1230         int err;
1231
1232         wVersionRequested = MAKEWORD( 2, 0 );
1233
1234         err = WSAStartup( wVersionRequested, &wsaData );
1235         if ( err != 0 ) {
1236                 /* Tell the user that we couldn't find a usable */
1237                 /* WinSock DLL.                                  */
1238                 return -1;
1239         }
1240
1241         /* Confirm that the WinSock DLL supports 2.0.*/
1242         /* Note that if the DLL supports versions greater    */
1243         /* than 2.0 in addition to 2.0, it will still return */
1244         /* 2.0 in wVersion since that is the version we      */
1245         /* requested.                                        */
1246
1247         if ( LOBYTE( wsaData.wVersion ) != 2 ||
1248                 HIBYTE( wsaData.wVersion ) != 0 )
1249         {
1250             /* Tell the user that we couldn't find a usable */
1251             /* WinSock DLL.                                  */
1252             WSACleanup();
1253             return -1;
1254         }
1255
1256         /* The WinSock DLL is acceptable. Proceed. */
1257 #elif defined( HAVE_WINSOCK )
1258         WSADATA wsaData;
1259         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
1260             return -1;
1261         }
1262 #endif
1263         return 0;
1264 }
1265
1266 int sockdestroy(void)
1267 {
1268 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
1269         WSACleanup();
1270 #endif
1271         return 0;
1272 }
1273
1274 RETSIGTYPE
1275 slap_sig_shutdown( int sig )
1276 {
1277         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
1278
1279         /*
1280          * If the NT Service Manager is controlling the server, we don't
1281          * want SIGBREAK to kill the server. For some strange reason,
1282          * SIGBREAK is generated when a user logs out.
1283          */
1284
1285 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
1286         if (is_NT_Service && sig == SIGBREAK)
1287             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
1288                   0, 0, 0);
1289         else
1290 #endif
1291         slapd_shutdown = sig;
1292
1293         WAKE_LISTENER(1);
1294
1295         /* reinstall self */
1296         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
1297 }
1298
1299 RETSIGTYPE
1300 slap_sig_wake( int sig )
1301 {
1302         WAKE_LISTENER(1);
1303
1304         /* reinstall self */
1305         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
1306 }