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
 406 #ifdef HAVE_GETADDRINFO
 407                 } /* sai->ai_family != AF_LOCAL */
 408                 if (!bind(l.sl_sd, sai->ai_addr, sai->ai_addrlen))
 409                         break;
 410                 err = sock_errno();
 411                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 412                         (long) l.sl_sd, err, sock_errstr(err) );
 413                 tcp_close( l.sl_sd );
 414         } while ((sai = sai->ai_next) != NULL);
 415
 416         if (!sai) {
 417                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed\n",
 418                         (long) l.sl_sd, 0, 0 );
 419                 return NULL;
 420         }
 421
 422         switch ( sai->ai_family ) {
 423 #  ifdef LDAP_PF_LOCAL
 424         case AF_LOCAL:
 425                 if ( chmod( (char *)sai->ai_addr, S_IRWXU ) < 0 ) {
 426                         int err = sock_errno();
 427                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 428                                 (long) l.sl_sd, err, sock_errstr(err) );
 429                         tcp_close( l.sl_sd );
 430                         return NULL;
 431                 }
 432                 l.sl_name = ch_malloc( strlen((char *)sai->ai_addr) + sizeof("PATH=") );
 433                 sprintf( l.sl_name, "PATH=%s", sai->ai_addr );
 434                 break;
 435 #  endif /* LDAP_PF_LOCAL */
 436
 437         case AF_INET: {
 438                 char addr[INET_ADDRSTRLEN];
 439                 inet_ntop( AF_INET,
 440                         &((struct sockaddr_in *)sai->ai_addr)->sin_addr,
 441                         addr, sizeof(addr) );
 442                 l.sl_name = ch_malloc( strlen(addr) + strlen(serv) + sizeof("IP=:") );
 443                 sprintf( l.sl_name, "IP=%s:%s", addr, serv );
 444         } break;
 445
 446 #  ifdef LDAP_PF_INET6
 447         case AF_INET6: {
 448                 char addr[INET6_ADDRSTRLEN];
 449                 inet_ntop( AF_INET6,
 450                         &((struct sockaddr_in6 *)sai->ai_addr)->sin6_addr,
 451                         addr, sizeof addr);
 452                 l.sl_name = ch_malloc( strlen(addr) + strlen(serv) + sizeof("IP= ") );
 453                 sprintf( l.sl_name, "IP=%s %s", addr, serv );
 454         } break;
 455 #  endif /* LDAP_PF_INET6 */
 456
 457         default:
 458                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 459                         (int) sai->ai_family, 0, 0 );
 460                 break;
 461         }
 462 #else
 463 #ifdef LDAP_PF_LOCAL
 464         /* close conditional */
 465         }
 466 #endif /* LDAP_PF_LOCAL */
 467
 468         switch ( l.sl_sa.sa_addr.sa_family ) {
 469 #ifdef LDAP_PF_LOCAL
 470                 case AF_LOCAL:
 471                         rc = bind( l.sl_sd, (struct sockaddr *)&l.sl_sa,
 472                                 sizeof(l.sl_sa.sa_un_addr) );
 473                         break;
 474 #endif
 475
 476                 case AF_INET:
 477                         rc = bind( l.sl_sd, (struct sockaddr *)&l.sl_sa,
 478                                 sizeof(l.sl_sa.sa_in_addr) );
 479                         break;
 480
 481                 default:
 482                         rc = AC_SOCKET_ERROR;
 483                         errno = EINVAL;
 484                         break;
 485         }
 486
 487         if ( rc == AC_SOCKET_ERROR ) {
 488                 int err = sock_errno();
 489                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 490                 (long) l.sl_sd, err, sock_errstr(err) );
 491                 tcp_close( l.sl_sd );
 492                 return NULL;
 493         }
 494
 495         switch ( l.sl_sa.sa_addr.sa_family ) {
 496 #ifdef LDAP_PF_LOCAL
 497                 case AF_LOCAL:
 498                         if ( chmod( l.sl_sa.sa_un_addr.sun_path, S_IRWXU ) < 0 ) {
 499                                 int err = sock_errno();
 500                                 Debug( LDAP_DEBUG_ANY,
 501                                         "daemon: chmod(%ld) failed errno=%d (%s)",
 502                                         (long) l.sl_sd, err, sock_errstr(err) );
 503                                 tcp_close( l.sl_sd );
 504                                 return NULL;
 505                         }
 506
 507                         l.sl_name = ch_malloc( strlen(l.sl_sa.sa_un_addr.sun_path)
 508                                 + sizeof("PATH=") );
 509                         sprintf( l.sl_name, "PATH=%s", l.sl_sa.sa_un_addr.sun_path );
 510                         break;
 511 #endif /* LDAP_PF_LOCAL */
 512
 513                 case AF_INET:
 514                         l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65336") );
 515                         s = inet_ntoa( l.sl_addr.sin_addr );
 516                         sprintf( l.sl_name, "IP=%s:%d",
 517                                 s != NULL ? s : "unknown" , port );
 518                         break;
 519
 520                 default:
 521                         l.sl_name = ch_strdup( "UNKNOWN" );
 522                         break;
 523         }
 524
 525 #endif /* HAVE_GETADDRINFO */
 526
 527         l.sl_url = ch_strdup( url );
 528         li = ch_malloc( sizeof( Listener ) );
 529         *li = l;
 530
 531         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 532                 l.sl_url, 0, 0 );
 533
 534         return li;
 535 }
 536
 537 static int sockinit(void);
 538 static int sockdestroy(void);
 539
 540 int slapd_daemon_init( const char *urls )
 541 {
 542         int i, rc;
 543         char **u;
 544
 545         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 546                 urls ? urls : "<null>", 0, 0 );
 547
 548         if( (rc = sockinit()) != 0 ) {
 549                 return rc;
 550         }
 551
 552 #ifdef HAVE_SYSCONF
 553         dtblsize = sysconf( _SC_OPEN_MAX );
 554 #elif HAVE_GETDTABLESIZE
 555         dtblsize = getdtablesize();
 556 #else
 557         dtblsize = FD_SETSIZE;
 558 #endif
 559
 560 #ifdef FD_SETSIZE
 561         if(dtblsize > FD_SETSIZE) {
 562                 dtblsize = FD_SETSIZE;
 563         }
 564 #endif  /* !FD_SETSIZE */
 565
 566         /* open a pipe (or something equivalent connected to itself).
 567          * we write a byte on this fd whenever we catch a signal. The main
 568          * loop will be select'ing on this socket, and will wake up when
 569          * this byte arrives.
 570          */
 571         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 572                 Debug( LDAP_DEBUG_ANY,
 573                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 574                 return rc;
 575         }
 576
 577         FD_ZERO( &slap_daemon.sd_readers );
 578         FD_ZERO( &slap_daemon.sd_writers );
 579
 580         if( urls == NULL ) {
 581                 urls = "ldap:///";
 582         }
 583
 584         u = str2charray( urls, " " );
 585
 586         if( u == NULL || u[0] == NULL ) {
 587                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
 588                         urls, 0, 0 );
 589
 590                 return -1;
 591         }
 592
 593         for( i=0; u[i] != NULL; i++ ) {
 594                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
 595                         u[i], 0, 0 );
 596         }
 597
 598         if( i == 0 ) {
 599                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
 600                         urls, 0, 0 );
 601                 charray_free( u );
 602                 return -1;
 603         }
 604
 605         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
 606                 i, 0, 0 );
 607
 608         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
 609
 610         for(i = 0; u[i] != NULL; i++ ) {
 611                 slap_listeners[i] = open_listener( u[i] );
 612
 613                 if( slap_listeners[i] == NULL ) {
 614                         charray_free( u );
 615                         return -1;
 616                 }
 617         }
 618         slap_listeners[i] = NULL;
 619
 620         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
 621                 i, 0, 0 );
 622
 623         charray_free( u );
 624         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
 625         return !i;
 626 }
 627
 628
 629 int
 630 slapd_daemon_destroy(void)
 631 {
 632         connections_destroy();
 633         tcp_close( wake_sds[1] );
 634         tcp_close( wake_sds[0] );
 635         sockdestroy();
 636         return 0;
 637 }
 638
 639
 640 static void *
 641 slapd_daemon_task(
 642         void *ptr
 643 )
 644 {
 645         int l;
 646         time_t  last_idle_check = slap_get_time();
 647         time( &starttime );
 648
 649         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 650                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 651                         continue;
 652
 653                 if ( listen( slap_listeners[l]->sl_sd, 5 ) == -1 ) {
 654                         int err = sock_errno();
 655                         Debug( LDAP_DEBUG_ANY,
 656                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
 657                                         slap_listeners[l]->sl_url, err,
 658                                         sock_errstr(err) );
 659                         return( (void*)-1 );
 660                 }
 661
 662                 slapd_add( slap_listeners[l]->sl_sd );
 663         }
 664
 665 #ifdef HAVE_NT_SERVICE_MANAGER
 666         if ( started_event != NULL ) {
 667                 ldap_pvt_thread_cond_signal( &started_event );
 668         }
 669 #endif
 670         /* initialization complete. Here comes the loop. */
 671
 672         while ( !slapd_shutdown ) {
 673                 ber_socket_t i;
 674                 int ns;
 675                 int at;
 676                 ber_socket_t nfds;
 677 #define SLAPD_EBADF_LIMIT 16
 678                 int ebadf = 0;
 679
 680 #define SLAPD_IDLE_CHECK_LIMIT 4
 681                 time_t  now = slap_get_time();
 682
 683
 684                 fd_set                  readfds;
 685                 fd_set                  writefds;
 686                 Sockaddr                from;
 687
 688 #if defined(SLAPD_RLOOKUPS)
 689         struct hostent          *hp;
 690 #endif
 691                 struct timeval          zero;
 692                 struct timeval          *tvp;
 693
 694                 if( global_idletimeout > 0 && difftime(
 695                         last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT,
 696                         now ) < 0 )
 697                 {
 698                         connections_timeout_idle(now);
 699                 }
 700
 701                 FD_ZERO( &writefds );
 702                 FD_ZERO( &readfds );
 703
 704                 zero.tv_sec = 0;
 705                 zero.tv_usec = 0;
 706
 707                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 708
 709 #ifdef FD_SET_MANUAL_COPY
 710                 for( s = 0; s < nfds; s++ ) {
 711                         if(FD_ISSET( &slap_sd_readers, s )) {
 712                                 FD_SET( s, &readfds );
 713                         }
 714                         if(FD_ISSET( &slap_sd_writers, s )) {
 715                                 FD_SET( s, &writefds );
 716                         }
 717                 }
 718 #else
 719                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
 720                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
 721 #endif
 722                 assert(!FD_ISSET(wake_sds[0], &readfds));
 723                 FD_SET( wake_sds[0], &readfds );
 724
 725                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 726                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 727                                 continue;
 728                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
 729                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
 730                 }
 731
 732 #ifndef HAVE_WINSOCK
 733                 nfds = slap_daemon.sd_nfds;
 734 #else
 735                 nfds = dtblsize;
 736 #endif
 737
 738                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 739
 740                 at = ldap_pvt_thread_pool_backload(&connection_pool);
 741
 742 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
 743                 tvp = NULL;
 744 #else
 745                 tvp = at ? &zero : NULL;
 746 #endif
 747
 748                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 749                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 750                                 continue;
 751
 752                         Debug( LDAP_DEBUG_CONNS,
 753                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
 754                                         slap_listeners[l]->sl_sd, at,
 755                                         tvp == NULL ? "NULL" : "zero" );
 756                 }
 757
 758                 switch(ns = select( nfds, &readfds,
 759 #ifdef HAVE_WINSOCK
 760                         /* don't pass empty fd_set */
 761                         ( writefds.fd_count > 0 ? &writefds : NULL ),
 762 #else
 763                         &writefds,
 764 #endif
 765                         NULL, tvp ))
 766                 {
 767                 case -1: {      /* failure - try again */
 768                                 int err = sock_errno();
 769
 770                                 if( err == EBADF
 771 #ifdef WSAENOTSOCK
 772                                         /* you'd think this would be EBADF */
 773                                         || err == WSAENOTSOCK
 774 #endif
 775                                 ) {
 776                                         if (++ebadf < SLAPD_EBADF_LIMIT)
 777                                                 continue;
 778                                 }
 779
 780                                 if( err != EINTR ) {
 781                                         Debug( LDAP_DEBUG_CONNS,
 782                                                 "daemon: select failed (%d): %s\n",
 783                                                 err, sock_errstr(err), 0 );
 784
 785                                         slapd_shutdown = -1;
 786                                 }
 787                         }
 788                         continue;
 789
 790                 case 0:         /* timeout - let threads run */
 791                         ebadf = 0;
 792                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
 793                             0, 0, 0 );
 794                 ldap_pvt_thread_yield();
 795                         continue;
 796
 797                 default:        /* something happened - deal with it */
 798                         ebadf = 0;
 799                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
 800                                 ns, 0, 0 );
 801                         /* FALL THRU */
 802                 }
 803
 804                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
 805                         char c[BUFSIZ];
 806                         tcp_read( wake_sds[0], c, sizeof(c) );
 807 #ifdef NO_THREADS
 808                         waking = 0;
 809 #endif
 810                         continue;
 811                 }
 812
 813                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 814                         ber_int_t s;
 815                         socklen_t len = sizeof(from);
 816                         long id;
 817                         slap_ssf_t ssf = 0;
 818                         char *authid = NULL;
 819
 820                         char    *dnsname;
 821                         char    *peeraddr;
 822 #ifdef LDAP_PF_LOCAL
 823                         char    peername[MAXPATHLEN + sizeof("PATH=")];
 824 #elif defined(LDAP_PF_INET6)
 825                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
 826 #else
 827                         char    peername[sizeof("IP=255.255.255.255:65336")];
 828 #endif /* LDAP_PF_LOCAL */
 829
 830                         peername[0] = '\0';
 831
 832                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 833                                 continue;
 834
 835                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
 836                                 continue;
 837
 838                         if ( (s = accept( slap_listeners[l]->sl_sd,
 839                                 (struct sockaddr *) &from, &len )) == AC_SOCKET_INVALID )
 840                         {
 841                                 int err = sock_errno();
 842                                 Debug( LDAP_DEBUG_ANY,
 843                                     "daemon: accept(%ld) failed errno=%d (%s)\n",
 844                                     (long) slap_listeners[l]->sl_sd, err,
 845                                     sock_errstr(err) );
 846                                 continue;
 847                         }
 848
 849 #ifndef HAVE_WINSOCK
 850                         /* make sure descriptor number isn't too great */
 851                         if ( s >= dtblsize ) {
 852                                 Debug( LDAP_DEBUG_ANY,
 853                                         "daemon: %ld beyond descriptor table size %ld\n",
 854                                         (long) s, (long) dtblsize, 0 );
 855                                 slapd_close(s);
 856                                 continue;
 857                         }
 858 #endif
 859
 860 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
 861 #ifdef LDAP_PF_LOCAL
 862                         /* for IPv4 and IPv6 sockets only */
 863                         if ( from.sa_addr.sa_family != AF_LOCAL )
 864 #endif /* LDAP_PF_LOCAL */
 865                         {
 866                                 int rc;
 867                                 int tmp;
 868 #ifdef SO_KEEPALIVE
 869                                 /* enable keep alives */
 870                                 tmp = 1;
 871                                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
 872                                         (char *) &tmp, sizeof(tmp) );
 873                                 if ( rc == AC_SOCKET_ERROR ) {
 874                                         int err = sock_errno();
 875                                         Debug( LDAP_DEBUG_ANY,
 876                                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
 877                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
 878                                 }
 879 #endif
 880 #ifdef TCP_NODELAY
 881                                 /* enable no delay */
 882                                 tmp = 1;
 883                                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
 884                                         (char *)&tmp, sizeof(tmp) );
 885                                 if ( rc == AC_SOCKET_ERROR ) {
 886                                         int err = sock_errno();
 887                                         Debug( LDAP_DEBUG_ANY,
 888                                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
 889                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
 890                                 }
 891 #endif
 892                         }
 893 #endif
 894
 895
 896 #ifdef LDAP_DEBUG
 897                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 898
 899                         /* newly accepted stream should not be in any of the FD SETS */
 900                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
 901                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
 902                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
 903
 904                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 905 #endif
 906
 907                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
 908                                 (long) s, 0, 0 );
 909
 910                         len = sizeof(from);
 911
 912                         if ( getpeername( s, (struct sockaddr *) &from, &len ) != 0 ) {
 913                                 int err = sock_errno();
 914                                 Debug( LDAP_DEBUG_ANY,
 915                                         "daemon: getpeername( %ld ) failed: errno=%d (%s)\n",
 916                                         (long) s, err, sock_errstr(err) );
 917                                 slapd_close(s);
 918                                 continue;
 919                         }
 920
 921                         switch ( from.sa_addr.sa_family ) {
 922 #  ifdef LDAP_PF_LOCAL
 923                         case AF_LOCAL:
 924                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
 925                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
 926                                 break;
 927 #endif /* LDAP_PF_LOCAL */
 928
 929 #  ifdef LDAP_PF_INET6
 930                         case AF_INET6:
 931                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
 932                                 peeraddr = inet_ntoa( *((struct in_addr *)
 933                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
 934                                 sprintf( peername, "IP=%s:%d",
 935                                          peeraddr != NULL ? peeraddr : "unknown",
 936                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
 937                         } else {
 938                                 char addr[INET6_ADDRSTRLEN];
 939                                 sprintf( peername, "IP=%s %d",
 940                                          inet_ntop( AF_INET6,
 941                                                     &from.sa_in6_addr.sin6_addr,
 942                                                     addr, sizeof addr) ? addr : "unknown",
 943                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
 944                         }
 945                         break;
 946 #  endif /* LDAP_PF_INET6 */
 947
 948                         case AF_INET:
 949                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
 950                         sprintf( peername, "IP=%s:%d",
 951                                 peeraddr != NULL ? peeraddr : "unknown",
 952                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
 953                                 break;
 954
 955                         default:
 956                                 slapd_close(s);
 957                                 continue;
 958                         }
 959                         if ( ( from.sa_addr.sa_family == AF_INET )
 960 #ifdef LDAP_PF_INET6
 961                                 || ( from.sa_addr.sa_family == AF_INET6 )
 962 #endif
 963                         ) {
 964 #ifdef SLAPD_RLOOKUPS
 965 #  ifdef LDAP_PF_INET6
 966                                 if ( from.sa_addr.sa_family == AF_INET6 )
 967                                         hp = gethostbyaddr(
 968                                                 (char *)&(from.sa_in6_addr.sin6_addr),
 969                                                 sizeof(from.sa_in6_addr.sin6_addr),
 970                                                 AF_INET6 );
 971                                 else
 972 #  endif LDAP_PF_INET6
 973                                 hp = gethostbyaddr(
 974                                         (char *) &(from.sa_in_addr.sin_addr),
 975                                         sizeof(from.sa_in_addr.sin_addr),
 976                                         AF_INET );
 977                                 dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
 978 #else
 979                                 dnsname = NULL;
 980 #endif /* SLAPD_RLOOKUPS */
 981
 982 #ifdef HAVE_TCPD
 983                                 if ( !hosts_ctl("slapd",
 984                                                 dnsname != NULL ? dnsname : STRING_UNKNOWN,
 985                                                 peeraddr != NULL ? peeraddr : STRING_UNKNOWN,
 986                                                 STRING_UNKNOWN ))
 987                                 {
 988                                         /* DENY ACCESS */
 989                                         Statslog( LDAP_DEBUG_ANY,
 990                                                 "fd=%ld host access from %s (%s) denied.\n",
 991                                                 (long) s,
 992                                                 dnsname != NULL ? dnsname : "unknown",
 993                                                 peeraddr != NULL ? peeraddr : "unknown",
 994                                                 0, 0 );
 995                                         slapd_close(s);
 996                                         continue;
 997                                 }
 998 #endif /* HAVE_TCPD */
 999                         }
1000
1001                         id = connection_init(s,
1002                                 slap_listeners[l]->sl_url,
1003                                 dnsname != NULL ? dnsname : "unknown",
1004                                 peername,
1005                                 slap_listeners[l]->sl_name,
1006 #ifdef HAVE_TLS
1007                                 slap_listeners[l]->sl_is_tls,
1008 #else
1009                                 0,
1010 #endif
1011                                 ssf,
1012                                 authid );
1013
1014                         if( authid ) ch_free(authid);
1015
1016                         if( id < 0 ) {
1017                                 Debug( LDAP_DEBUG_ANY,
1018                                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1019                                         (long) s,
1020                                         peername,
1021                                         slap_listeners[l]->sl_name );
1022                                 slapd_close(s);
1023                                 continue;
1024                         }
1025
1026                         Statslog( LDAP_DEBUG_STATS,
1027                                 "daemon: conn=%ld fd=%ld connection from %s (%s) accepted.\n",
1028                                 id, (long) s,
1029                                 peername,
1030                                 slap_listeners[l]->sl_name,
1031                                 0 );
1032
1033                         slapd_add( s );
1034                         continue;
1035                 }
1036
1037 #ifdef LDAP_DEBUG
1038                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1039 #ifdef HAVE_WINSOCK
1040                 for ( i = 0; i < readfds.fd_count; i++ ) {
1041                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1042                                 readfds.fd_array[i], "r", 0 );
1043                 }
1044                 for ( i = 0; i < writefds.fd_count; i++ ) {
1045                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1046                                 writefds.fd_array[i], "w", 0 );
1047                 }
1048 #else
1049                 for ( i = 0; i < nfds; i++ ) {
1050                         int     r, w;
1051                         int     is_listener = 0;
1052
1053                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1054                                 if ( i == slap_listeners[l]->sl_sd ) {
1055                                         is_listener = 1;
1056                                         break;
1057                                 }
1058                         }
1059                         if ( is_listener ) {
1060                                 continue;
1061                         }
1062                         r = FD_ISSET( i, &readfds );
1063                         w = FD_ISSET( i, &writefds );
1064                         if ( r || w ) {
1065                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1066                                     r ? "r" : "", w ? "w" : "" );
1067                         }
1068                 }
1069 #endif
1070                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1071 #endif
1072
1073                 /* loop through the writers */
1074 #ifdef HAVE_WINSOCK
1075                 for ( i = 0; i < writefds.fd_count; i++ )
1076 #else
1077                 for ( i = 0; i < nfds; i++ )
1078 #endif
1079                 {
1080                         ber_socket_t wd;
1081                         int is_listener = 0;
1082 #ifdef HAVE_WINSOCK
1083                         wd = writefds.fd_array[i];
1084 #else
1085                         if( ! FD_ISSET( i, &writefds ) ) {
1086                                 continue;
1087                         }
1088                         wd = i;
1089 #endif
1090
1091                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1092                                 if ( i == slap_listeners[l]->sl_sd ) {
1093                                         is_listener = 1;
1094                                         break;
1095                                 }
1096                         }
1097                         if ( is_listener ) {
1098                                 continue;
1099                         }
1100                         Debug( LDAP_DEBUG_CONNS,
1101                                 "daemon: write active on %d\n",
1102                                 wd, 0, 0 );
1103
1104                         /*
1105                          * NOTE: it is possible that the connection was closed
1106                          * and that the stream is now inactive.
1107                          * connection_write() must valid the stream is still
1108                          * active.
1109                          */
1110
1111                         if ( connection_write( wd ) < 0 ) {
1112                                 FD_CLR( (unsigned) wd, &readfds );
1113                                 slapd_close( wd );
1114                         }
1115                 }
1116
1117 #ifdef HAVE_WINSOCK
1118                 for ( i = 0; i < readfds.fd_count; i++ )
1119 #else
1120                 for ( i = 0; i < nfds; i++ )
1121 #endif
1122                 {
1123                         ber_socket_t rd;
1124                         int is_listener = 0;
1125
1126 #ifdef HAVE_WINSOCK
1127                         rd = readfds.fd_array[i];
1128 #else
1129                         if( ! FD_ISSET( i, &readfds ) ) {
1130                                 continue;
1131                         }
1132                         rd = i;
1133 #endif
1134
1135                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1136                                 if ( rd == slap_listeners[l]->sl_sd ) {
1137                                         is_listener = 1;
1138                                         break;
1139                                 }
1140                         }
1141                         if ( is_listener ) {
1142                                 continue;
1143                         }
1144
1145                         Debug ( LDAP_DEBUG_CONNS,
1146                                 "daemon: read activity on %d\n", rd, 0, 0 );
1147
1148                         /*
1149                          * NOTE: it is possible that the connection was closed
1150                          * and that the stream is now inactive.
1151                          * connection_read() must valid the stream is still
1152                          * active.
1153                          */
1154
1155                         if ( connection_read( rd ) < 0 ) {
1156                                 slapd_close( rd );
1157                         }
1158                 }
1159                 ldap_pvt_thread_yield();
1160         }
1161
1162         if( slapd_shutdown > 0 ) {
1163                 Debug( LDAP_DEBUG_TRACE,
1164                         "daemon: shutdown requested and initiated.\n",
1165                         0, 0, 0 );
1166
1167         } else if ( slapd_shutdown < 0 ) {
1168 #ifdef HAVE_NT_SERVICE_MANAGER
1169                 if (slapd_shutdown == -1)
1170                     Debug( LDAP_DEBUG_TRACE,
1171                           "daemon: shutdown initiated by Service Manager.\n",
1172                           0, 0, 0);
1173                 else
1174 #endif
1175                 Debug( LDAP_DEBUG_TRACE,
1176                         "daemon: abnormal condition, shutdown initiated.\n",
1177                         0, 0, 0 );
1178         } else {
1179                 Debug( LDAP_DEBUG_TRACE,
1180                         "daemon: no active streams, shutdown initiated.\n",
1181                         0, 0, 0 );
1182         }
1183
1184         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1185                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1186 #ifdef LDAP_PF_LOCAL
1187                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1188                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1189                         }
1190 #endif /* LDAP_PF_LOCAL */
1191                         slapd_close( slap_listeners[l]->sl_sd );
1192                         break;
1193                 }
1194         }
1195
1196         Debug( LDAP_DEBUG_ANY,
1197             "slapd shutdown: waiting for %d threads to terminate\n",
1198             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1199
1200         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1201
1202         return NULL;
1203 }
1204
1205
1206 int slapd_daemon( void )
1207 {
1208         int rc;
1209
1210         connections_init();
1211
1212 #define SLAPD_LISTENER_THREAD 1
1213 #if defined( SLAPD_LISTENER_THREAD ) || !defined(HAVE_PTHREADS)
1214
1215         /* listener as a separate THREAD */
1216         rc = ldap_pvt_thread_create( &listener_tid,
1217                 0, slapd_daemon_task, NULL );
1218
1219         if ( rc != 0 ) {
1220                 Debug( LDAP_DEBUG_ANY,
1221                     "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
1222                 return rc;
1223         }
1224
1225         /* wait for the listener thread to complete */
1226         ldap_pvt_thread_join( listener_tid, (void *) NULL );
1227 #else
1228         /* expermimental code */
1229         listener_tid = pthread_self();
1230         slapd_daemon_task( NULL );
1231 #endif
1232
1233         return 0;
1234
1235 }
1236
1237 int sockinit(void)
1238 {
1239 #if defined( HAVE_WINSOCK2 )
1240     WORD wVersionRequested;
1241         WSADATA wsaData;
1242         int err;
1243
1244         wVersionRequested = MAKEWORD( 2, 0 );
1245
1246         err = WSAStartup( wVersionRequested, &wsaData );
1247         if ( err != 0 ) {
1248                 /* Tell the user that we couldn't find a usable */
1249                 /* WinSock DLL.                                  */
1250                 return -1;
1251         }
1252
1253         /* Confirm that the WinSock DLL supports 2.0.*/
1254         /* Note that if the DLL supports versions greater    */
1255         /* than 2.0 in addition to 2.0, it will still return */
1256         /* 2.0 in wVersion since that is the version we      */
1257         /* requested.                                        */
1258
1259         if ( LOBYTE( wsaData.wVersion ) != 2 ||
1260                 HIBYTE( wsaData.wVersion ) != 0 )
1261         {
1262             /* Tell the user that we couldn't find a usable */
1263             /* WinSock DLL.                                  */
1264             WSACleanup();
1265             return -1;
1266         }
1267
1268         /* The WinSock DLL is acceptable. Proceed. */
1269 #elif defined( HAVE_WINSOCK )
1270         WSADATA wsaData;
1271         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
1272             return -1;
1273         }
1274 #endif
1275         return 0;
1276 }
1277
1278 int sockdestroy(void)
1279 {
1280 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
1281         WSACleanup();
1282 #endif
1283         return 0;
1284 }
1285
1286 RETSIGTYPE
1287 slap_sig_shutdown( int sig )
1288 {
1289         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
1290
1291         /*
1292          * If the NT Service Manager is controlling the server, we don't
1293          * want SIGBREAK to kill the server. For some strange reason,
1294          * SIGBREAK is generated when a user logs out.
1295          */
1296
1297 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
1298         if (is_NT_Service && sig == SIGBREAK)
1299             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
1300                   0, 0, 0);
1301         else
1302 #endif
1303         slapd_shutdown = sig;
1304
1305         WAKE_LISTENER(1);
1306
1307         /* reinstall self */
1308         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
1309 }
1310
1311 RETSIGTYPE
1312 slap_sig_wake( int sig )
1313 {
1314         WAKE_LISTENER(1);
1315
1316         /* reinstall self */
1317         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
1318 }
1319
1320
1321 void slapd_add_internal(ber_socket_t s) {
1322         slapd_add(s);
1323 }