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 struct slap_daemon {
  85         ldap_pvt_thread_mutex_t sd_mutex;
  86
  87         int sd_nactives;
  88
  89 #ifndef HAVE_WINSOCK
  90         /* In winsock, accept() returns values higher than dtblsize
  91                 so don't bother with this optimization */
  92         int sd_nfds;
  93 #endif
  94
  95         fd_set sd_actives;
  96         fd_set sd_readers;
  97         fd_set sd_writers;
  98 } slap_daemon;
  99
 100 /*
 101  * Add a descriptor to daemon control
 102  */
 103 static void slapd_add(ber_socket_t s) {
 104         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 105
 106         assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
 107         assert( !FD_ISSET( s, &slap_daemon.sd_readers ));
 108         assert( !FD_ISSET( s, &slap_daemon.sd_writers ));
 109
 110 #ifndef HAVE_WINSOCK
 111         if (s >= slap_daemon.sd_nfds) {
 112                 slap_daemon.sd_nfds = s + 1;
 113         }
 114 #endif
 115
 116         FD_SET( s, &slap_daemon.sd_actives );
 117         FD_SET( s, &slap_daemon.sd_readers );
 118
 119         Debug( LDAP_DEBUG_CONNS, "daemon: added %ld%s%s\n",
 120                 (long) s,
 121             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 122                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 123
 124         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 125 }
 126
 127 /*
 128  * Remove the descriptor from daemon control
 129  */
 130 void slapd_remove(ber_socket_t s, int wake) {
 131         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 132
 133         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 134                 (long) s,
 135             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 136                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 137
 138         FD_CLR( s, &slap_daemon.sd_actives );
 139         FD_CLR( s, &slap_daemon.sd_readers );
 140         FD_CLR( s, &slap_daemon.sd_writers );
 141
 142         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 143         WAKE_LISTENER(wake);
 144 }
 145
 146 void slapd_clr_write(ber_socket_t s, int wake) {
 147         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 148
 149         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 150         FD_CLR( s, &slap_daemon.sd_writers );
 151
 152         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 153         WAKE_LISTENER(wake);
 154 }
 155
 156 void slapd_set_write(ber_socket_t s, int wake) {
 157         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 158
 159         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 160         if (!FD_ISSET(s, &slap_daemon.sd_writers))
 161             FD_SET( (unsigned) s, &slap_daemon.sd_writers );
 162
 163         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 164         WAKE_LISTENER(wake);
 165 }
 166
 167 void slapd_clr_read(ber_socket_t s, int wake) {
 168         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 169
 170         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 171         FD_CLR( s, &slap_daemon.sd_readers );
 172
 173         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 174         WAKE_LISTENER(wake);
 175 }
 176
 177 void slapd_set_read(ber_socket_t s, int wake) {
 178         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 179
 180         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 181         if (!FD_ISSET(s, &slap_daemon.sd_readers))
 182             FD_SET( s, &slap_daemon.sd_readers );
 183
 184         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 185         WAKE_LISTENER(wake);
 186 }
 187
 188 static void slapd_close(ber_socket_t s) {
 189         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 190                 (long) s, 0, 0 );
 191         tcp_close(s);
 192 }
 193
 194 static slap_free_listener_addresses(struct sockaddr **sal)
 195 {
 196         struct sockaddr **sap;
 197
 198         if (sal == NULL) {
 199                 return;
 200         }
 201
 202         for (sap = sal; *sap != NULL; sap++) {
 203                 ch_free(*sap);
 204         }
 205
 206         ch_free(sal);
 207 }
 208
 209 /* port = 0 indicates AF_LOCAL */
 210 static int slap_get_listener_addresses(
 211         const char *host,
 212         unsigned short port,
 213         struct sockaddr ***sal)
 214 {
 215         struct sockaddr **sap;
 216 #ifdef HAVE_GETADDRINFO
 217         struct addrinfo hints, *res, *sai;
 218         int n, err;
 219
 220         memset( &hints, '\0', sizeof(hints) );
 221         hints.ai_flags = AI_PASSIVE;
 222         hints.ai_socktype = SOCK_STREAM;
 223 #  ifdef LDAP_PF_LOCAL
 224         if ( port == 0 ) {
 225                 hints.ai_family = AF_LOCAL;
 226                 /* host specifies a service in this case */
 227                 if (err = getaddrinfo(NULL, host, &hints, &res)) {
 228                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 229                                 gai_strerror(err), 0, 0);
 230                         return -1;
 231                 }
 232         } else
 233 #  endif
 234         {
 235                 char serv[7];
 236
 237                 snprintf(serv, sizeof serv, "%d", port);
 238                 hints.ai_family = AF_UNSPEC;
 239                 if (err = getaddrinfo(host, serv, &hints, &res)) {
 240                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 241                                 gai_strerror(err), 0, 0);
 242                         return -1;
 243                 }
 244         }
 245
 246         sai = res;
 247         for (n=2; (sai = sai->ai_next) != NULL; n++) {
 248                 /* EMPTY */ ;
 249         }
 250         *sal = ch_malloc(n * sizeof(*sal));
 251         if (*sal == NULL) {
 252                 return -1;
 253         }
 254
 255         sai = res;
 256         sap = *sal;
 257         do {
 258                 switch (sai->ai_family) {
 259 #  ifdef LDAP_PF_LOCAL
 260                 case AF_LOCAL: {
 261                         *sap = ch_malloc(sizeof(struct sockaddr_un));
 262                         if (*sap == NULL) {
 263                                 freeaddrinfo(res);
 264                                 goto errexit;
 265                         }
 266                         *(struct sockaddr_un *)*sap =
 267                                 *((struct sockaddr_un *)sai->ai_addr);
 268                 } break;
 269 #  endif
 270 #  ifdef LDAP_PF_INET6
 271                 case AF_INET6: {
 272                         *sap = ch_malloc(sizeof(struct sockaddr_in6));
 273                         if (*sap == NULL) {
 274                                 freeaddrinfo(res);
 275                                 goto errexit;
 276                         }
 277                         *(struct sockaddr_in6 *)*sap =
 278                                 *((struct sockaddr_in6 *)sai->ai_addr);
 279                 } break;
 280 #  endif
 281                 case AF_INET: {
 282                         *sap = ch_malloc(sizeof(struct sockaddr_in));
 283                         if (*sap == NULL) {
 284                                 freeaddrinfo(res);
 285                                 goto errexit;
 286                         }
 287                         *(struct sockaddr_in *)*sap =
 288                                 *((struct sockaddr_in *)sai->ai_addr);
 289                 } break;
 290                 default:
 291                         *sap = NULL;
 292                         break;
 293                 }
 294                 sap++;
 295         } while ((sai = sai->ai_next) != NULL);
 296
 297         freeaddrinfo(res);
 298
 299 #else
 300 #  ifdef LDAP_PF_LOCAL
 301         if ( port == 0 ) {
 302                 *sal = ch_malloc(2 * sizeof(*sal));
 303                 if (*sal == NULL) {
 304                         return -1;
 305                 }
 306                 sap = *sal;
 307                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 308                 if (*sap == NULL)
 309                         goto errexit;
 310                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 311                 (*sap)->sa_family = AF_LOCAL;
 312                 if ( strlen(host) >
 313                      (sizeof(((struct sockaddr_un *)*sal)->sun_path) - 1) ) {
 314                         Debug( LDAP_DEBUG_ANY,
 315                                "daemon: domain socket path (%s) too long in URL",
 316                                host, 0, 0);
 317                         goto errexit;
 318                 }
 319                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 320         } else
 321 #  endif
 322         {
 323                 struct in_addr in;
 324
 325                 if ( host == NULL ) {
 326                         in.s_addr = htonl(INADDR_ANY);
 327
 328                 } else if ( !inet_aton( host, &in ) ) {
 329                         struct hostent *he = gethostbyname( host );
 330                         if( he == NULL ) {
 331                                 Debug( LDAP_DEBUG_ANY,
 332                                        "daemon: invalid host %s", host, 0, 0);
 333                                 return -1;
 334                         }
 335                         AC_MEMCPY( &in, he->h_addr, sizeof( in ) );
 336                 }
 337
 338                 *sal = ch_malloc(2 * sizeof(*sal));
 339                 if (*sal == NULL) {
 340                         return -1;
 341                 }
 342
 343                 sap = *sal;
 344                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 345                 if (*sap == NULL) {
 346                         goto errexit;
 347                 }
 348
 349                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_in) );
 350                 (*sap)->sa_family = AF_INET;
 351                 ((struct sockaddr_in *)*sap)->sin_port = htons(port);
 352                 ((struct sockaddr_in *)*sap)->sin_addr = in;
 353         }
 354         sap++;
 355 #endif
 356
 357         *sap = NULL;
 358         return 0;
 359
 360 errexit:
 361         slap_free_listener_addresses(*sal);
 362         return -1;
 363 }
 364
 365 static Listener * slap_open_listener(
 366         const char* url )
 367 {
 368         int     tmp, rc;
 369         Listener l;
 370         Listener *li;
 371         LDAPURLDesc *lud;
 372         unsigned short port;
 373         int err, addrlen;
 374         struct sockaddr **sal, **psal;
 375
 376         rc = ldap_url_parse( url, &lud );
 377
 378         if( rc != LDAP_URL_SUCCESS ) {
 379                 Debug( LDAP_DEBUG_ANY,
 380                         "daemon: listen URL \"%s\" parse error=%d\n",
 381                         url, rc, 0 );
 382                 return NULL;
 383         }
 384
 385 #ifndef HAVE_TLS
 386         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 387                 Debug( LDAP_DEBUG_ANY,
 388                         "daemon: TLS not supported (%s)\n",
 389                         url, 0, 0 );
 390                 ldap_free_urldesc( lud );
 391                 return NULL;
 392         }
 393
 394         if(! lud->lud_port ) {
 395                 lud->lud_port = LDAP_PORT;
 396         }
 397
 398 #else
 399         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 400
 401         if(! lud->lud_port ) {
 402                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 403         }
 404 #endif
 405
 406         port = (unsigned short) lud->lud_port;
 407
 408         if ( ldap_pvt_url_scheme2proto(lud->lud_scheme) == LDAP_PROTO_IPC ) {
 409 #ifdef LDAP_PF_LOCAL
 410                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 411                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 412                 } else {
 413                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 414                 }
 415 #else
 416                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 417                         url, 0, 0);
 418                 ldap_free_urldesc( lud );
 419                 return NULL;
 420 #endif
 421         } else {
 422                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 423                         || strcmp(lud->lud_host, "*") == 0 )
 424                 {
 425                         err = slap_get_listener_addresses(NULL, port, &sal);
 426                 } else {
 427                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 428                 }
 429         }
 430
 431         ldap_free_urldesc( lud );
 432         if ( err ) {
 433                 return NULL;
 434         }
 435
 436         psal = sal;
 437         while ( *sal != NULL ) {
 438                 switch( (*sal)->sa_family ) {
 439                 case AF_INET:
 440 #ifdef LDAP_PF_INET6
 441                 case AF_INET6:
 442 #endif
 443 #ifdef LDAP_PF_LOCAL
 444                 case AF_LOCAL:
 445 #endif
 446                         break;
 447                 default:
 448                         sal++;
 449                         continue;
 450                 }
 451                 l.sl_sd = socket( (*sal)->sa_family, SOCK_STREAM, 0);
 452                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 453                         int err = sock_errno();
 454                         Debug( LDAP_DEBUG_ANY,
 455                                 "daemon: socket() failed errno=%d (%s)\n", err,
 456                                 sock_errstr(err), 0 );
 457                         sal++;
 458                         continue;
 459                 }
 460 #ifndef HAVE_WINSOCK
 461                 if ( l.sl_sd >= dtblsize ) {
 462                         Debug( LDAP_DEBUG_ANY,
 463                                "daemon: listener descriptor %ld is too great %ld\n",
 464                                (long) l.sl_sd, (long) dtblsize, 0 );
 465                         tcp_close( l.sl_sd );
 466                         sal++;
 467                         continue;
 468                 }
 469 #endif
 470 #ifdef LDAP_PF_LOCAL
 471                 if ( (*sal)->sa_family == AF_LOCAL ) {
 472                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 473                 } else
 474 #endif
 475                 {
 476 #ifdef SO_REUSEADDR
 477                         /* enable address reuse */
 478                         tmp = 1;
 479                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 480                                          (char *) &tmp, sizeof(tmp) );
 481                         if ( rc == AC_SOCKET_ERROR ) {
 482                                 int err = sock_errno();
 483                                 Debug( LDAP_DEBUG_ANY,
 484                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 485                                        (long) l.sl_sd, err, sock_errstr(err) );
 486                         }
 487 #endif
 488                 }
 489
 490                 switch( (*sal)->sa_family ) {
 491                 case AF_INET:
 492                         addrlen = sizeof(struct sockaddr_in);
 493                         break;
 494 #ifdef LDAP_PF_INET6
 495                 case AF_INET6:
 496                         addrlen = sizeof(struct sockaddr_in6);
 497                         break;
 498 #endif
 499 #ifdef LDAP_PF_LOCAL
 500                 case AF_LOCAL:
 501                         addrlen = sizeof(struct sockaddr_un);
 502                         break;
 503 #endif
 504                 }
 505
 506                 if (!bind(l.sl_sd, *sal, addrlen))
 507                         break;
 508                 err = sock_errno();
 509                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 510                        (long) l.sl_sd, err, sock_errstr(err) );
 511                 tcp_close( l.sl_sd );
 512                 sal++;
 513         } /* while ( *sal != NULL ) */
 514
 515         if ( *sal == NULL ) {
 516                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed\n",
 517                         (long) l.sl_sd, 0, 0 );
 518                 slap_free_listener_addresses(psal);
 519                 return NULL;
 520         }
 521
 522         switch ( (*sal)->sa_family ) {
 523 #ifdef LDAP_PF_LOCAL
 524         case AF_LOCAL: {
 525                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 526                 if ( chmod( addr, S_IRWXU ) < 0 ) {
 527                         int err = sock_errno();
 528                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 529                                (long) l.sl_sd, err, sock_errstr(err) );
 530                         tcp_close( l.sl_sd );
 531                         slap_free_listener_addresses(psal);
 532                         return NULL;
 533                 }
 534                 l.sl_name = ch_malloc( strlen(addr) + sizeof("PATH=") );
 535                 sprintf( l.sl_name, "PATH=%s", addr );
 536         } break;
 537 #endif /* LDAP_PF_LOCAL */
 538
 539         case AF_INET: {
 540                 char *s;
 541 #ifdef HAVE_GETADDRINFO
 542                 char addr[INET_ADDRSTRLEN];
 543                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
 544                            addr, sizeof(addr) );
 545                 s = addr;
 546 #else
 547                 s = inet_ntoa( l.sl_addr.sin_addr );
 548 #endif
 549                 l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65535") );
 550                 sprintf( l.sl_name, "IP=%s:%d",
 551                          s != NULL ? s : "unknown" , port );
 552         } break;
 553
 554 #ifdef LDAP_PF_INET6
 555         case AF_INET6: {
 556                 char addr[INET6_ADDRSTRLEN];
 557                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
 558                            addr, sizeof addr);
 559                 l.sl_name = ch_malloc( strlen(addr) + sizeof("IP= 65535") );
 560                 sprintf( l.sl_name, "IP=%s %d", addr, port );
 561         } break;
 562 #endif /* LDAP_PF_INET6 */
 563
 564         default:
 565                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 566                         (int) (*sal)->sa_family, 0, 0 );
 567                 break;
 568         }
 569
 570         slap_free_listener_addresses(psal);
 571
 572         l.sl_url = ch_strdup( url );
 573         li = ch_malloc( sizeof( Listener ) );
 574         *li = l;
 575
 576         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 577                 l.sl_url, 0, 0 );
 578
 579         return li;
 580 }
 581
 582 static int sockinit(void);
 583 static int sockdestroy(void);
 584
 585 int slapd_daemon_init( const char *urls )
 586 {
 587         int i, rc;
 588         char **u;
 589
 590         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 591                 urls ? urls : "<null>", 0, 0 );
 592
 593         if( (rc = sockinit()) != 0 ) {
 594                 return rc;
 595         }
 596
 597 #ifdef HAVE_SYSCONF
 598         dtblsize = sysconf( _SC_OPEN_MAX );
 599 #elif HAVE_GETDTABLESIZE
 600         dtblsize = getdtablesize();
 601 #else
 602         dtblsize = FD_SETSIZE;
 603 #endif
 604
 605 #ifdef FD_SETSIZE
 606         if(dtblsize > FD_SETSIZE) {
 607                 dtblsize = FD_SETSIZE;
 608         }
 609 #endif  /* !FD_SETSIZE */
 610
 611         /* open a pipe (or something equivalent connected to itself).
 612          * we write a byte on this fd whenever we catch a signal. The main
 613          * loop will be select'ing on this socket, and will wake up when
 614          * this byte arrives.
 615          */
 616         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 617                 Debug( LDAP_DEBUG_ANY,
 618                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 619                 return rc;
 620         }
 621
 622         FD_ZERO( &slap_daemon.sd_readers );
 623         FD_ZERO( &slap_daemon.sd_writers );
 624
 625         if( urls == NULL ) {
 626                 urls = "ldap:///";
 627         }
 628
 629         u = str2charray( urls, " " );
 630
 631         if( u == NULL || u[0] == NULL ) {
 632                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
 633                         urls, 0, 0 );
 634
 635                 return -1;
 636         }
 637
 638         for( i=0; u[i] != NULL; i++ ) {
 639                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
 640                         u[i], 0, 0 );
 641         }
 642
 643         if( i == 0 ) {
 644                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
 645                         urls, 0, 0 );
 646                 charray_free( u );
 647                 return -1;
 648         }
 649
 650         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
 651                 i, 0, 0 );
 652
 653         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
 654
 655         for(i = 0; u[i] != NULL; i++ ) {
 656                 slap_listeners[i] = slap_open_listener( u[i] );
 657
 658                 if( slap_listeners[i] == NULL ) {
 659                         charray_free( u );
 660                         return -1;
 661                 }
 662         }
 663         slap_listeners[i] = NULL;
 664
 665         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
 666                 i, 0, 0 );
 667
 668         charray_free( u );
 669         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
 670         return !i;
 671 }
 672
 673
 674 int
 675 slapd_daemon_destroy(void)
 676 {
 677         connections_destroy();
 678         tcp_close( wake_sds[1] );
 679         tcp_close( wake_sds[0] );
 680         sockdestroy();
 681         return 0;
 682 }
 683
 684
 685 static void *
 686 slapd_daemon_task(
 687         void *ptr
 688 )
 689 {
 690         int l;
 691         time_t  last_idle_check = slap_get_time();
 692         time( &starttime );
 693
 694         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 695                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 696                         continue;
 697
 698                 if ( listen( slap_listeners[l]->sl_sd, 5 ) == -1 ) {
 699                         int err = sock_errno();
 700                         Debug( LDAP_DEBUG_ANY,
 701                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
 702                                         slap_listeners[l]->sl_url, err,
 703                                         sock_errstr(err) );
 704                         return( (void*)-1 );
 705                 }
 706
 707                 slapd_add( slap_listeners[l]->sl_sd );
 708         }
 709
 710 #ifdef HAVE_NT_SERVICE_MANAGER
 711         if ( started_event != NULL ) {
 712                 ldap_pvt_thread_cond_signal( &started_event );
 713         }
 714 #endif
 715         /* initialization complete. Here comes the loop. */
 716
 717         while ( !slapd_shutdown ) {
 718                 ber_socket_t i;
 719                 int ns;
 720                 int at;
 721                 ber_socket_t nfds;
 722 #define SLAPD_EBADF_LIMIT 16
 723                 int ebadf = 0;
 724
 725 #define SLAPD_IDLE_CHECK_LIMIT 4
 726                 time_t  now = slap_get_time();
 727
 728
 729                 fd_set                  readfds;
 730                 fd_set                  writefds;
 731                 Sockaddr                from;
 732
 733 #if defined(SLAPD_RLOOKUPS)
 734         struct hostent          *hp;
 735 #endif
 736                 struct timeval          zero;
 737                 struct timeval          *tvp;
 738
 739                 if( global_idletimeout > 0 && difftime(
 740                         last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT,
 741                         now ) < 0 )
 742                 {
 743                         connections_timeout_idle(now);
 744                 }
 745
 746                 FD_ZERO( &writefds );
 747                 FD_ZERO( &readfds );
 748
 749                 zero.tv_sec = 0;
 750                 zero.tv_usec = 0;
 751
 752                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 753
 754 #ifdef FD_SET_MANUAL_COPY
 755                 for( s = 0; s < nfds; s++ ) {
 756                         if(FD_ISSET( &slap_sd_readers, s )) {
 757                                 FD_SET( s, &readfds );
 758                         }
 759                         if(FD_ISSET( &slap_sd_writers, s )) {
 760                                 FD_SET( s, &writefds );
 761                         }
 762                 }
 763 #else
 764                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
 765                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
 766 #endif
 767                 assert(!FD_ISSET(wake_sds[0], &readfds));
 768                 FD_SET( wake_sds[0], &readfds );
 769
 770                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 771                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 772                                 continue;
 773                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
 774                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
 775                 }
 776
 777 #ifndef HAVE_WINSOCK
 778                 nfds = slap_daemon.sd_nfds;
 779 #else
 780                 nfds = dtblsize;
 781 #endif
 782
 783                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 784
 785                 at = ldap_pvt_thread_pool_backload(&connection_pool);
 786
 787 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
 788                 tvp = NULL;
 789 #else
 790                 tvp = at ? &zero : NULL;
 791 #endif
 792
 793                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 794                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 795                                 continue;
 796
 797                         Debug( LDAP_DEBUG_CONNS,
 798                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
 799                                         slap_listeners[l]->sl_sd, at,
 800                                         tvp == NULL ? "NULL" : "zero" );
 801                 }
 802
 803                 switch(ns = select( nfds, &readfds,
 804 #ifdef HAVE_WINSOCK
 805                         /* don't pass empty fd_set */
 806                         ( writefds.fd_count > 0 ? &writefds : NULL ),
 807 #else
 808                         &writefds,
 809 #endif
 810                         NULL, tvp ))
 811                 {
 812                 case -1: {      /* failure - try again */
 813                                 int err = sock_errno();
 814
 815                                 if( err == EBADF
 816 #ifdef WSAENOTSOCK
 817                                         /* you'd think this would be EBADF */
 818                                         || err == WSAENOTSOCK
 819 #endif
 820                                 ) {
 821                                         if (++ebadf < SLAPD_EBADF_LIMIT)
 822                                                 continue;
 823                                 }
 824
 825                                 if( err != EINTR ) {
 826                                         Debug( LDAP_DEBUG_CONNS,
 827                                                 "daemon: select failed (%d): %s\n",
 828                                                 err, sock_errstr(err), 0 );
 829
 830                                         slapd_shutdown = -1;
 831                                 }
 832                         }
 833                         continue;
 834
 835                 case 0:         /* timeout - let threads run */
 836                         ebadf = 0;
 837                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
 838                             0, 0, 0 );
 839                 ldap_pvt_thread_yield();
 840                         continue;
 841
 842                 default:        /* something happened - deal with it */
 843                         if( slapd_shutdown ) continue;
 844
 845                         ebadf = 0;
 846                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
 847                                 ns, 0, 0 );
 848                         /* FALL THRU */
 849                 }
 850
 851                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
 852                         char c[BUFSIZ];
 853                         tcp_read( wake_sds[0], c, sizeof(c) );
 854 #ifdef NO_THREADS
 855                         waking = 0;
 856 #endif
 857                         continue;
 858                 }
 859
 860                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 861                         ber_int_t s;
 862                         socklen_t len = sizeof(from);
 863                         long id;
 864                         slap_ssf_t ssf = 0;
 865                         char *authid = NULL;
 866
 867                         char    *dnsname;
 868                         char    *peeraddr;
 869 #ifdef LDAP_PF_LOCAL
 870                         char    peername[MAXPATHLEN + sizeof("PATH=")];
 871 #elif defined(LDAP_PF_INET6)
 872                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
 873 #else
 874                         char    peername[sizeof("IP=255.255.255.255:65336")];
 875 #endif /* LDAP_PF_LOCAL */
 876
 877                         peername[0] = '\0';
 878
 879                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 880                                 continue;
 881
 882                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
 883                                 continue;
 884
 885                         s = accept( slap_listeners[l]->sl_sd,
 886                                 (struct sockaddr *) &from, &len );
 887                         if ( s == AC_SOCKET_INVALID ) {
 888                                 int err = sock_errno();
 889                                 Debug( LDAP_DEBUG_ANY,
 890                                     "daemon: accept(%ld) failed errno=%d (%s)\n",
 891                                     (long) slap_listeners[l]->sl_sd, err,
 892                                     sock_errstr(err) );
 893                                 continue;
 894                         }
 895
 896 #ifndef HAVE_WINSOCK
 897                         /* make sure descriptor number isn't too great */
 898                         if ( s >= dtblsize ) {
 899                                 Debug( LDAP_DEBUG_ANY,
 900                                         "daemon: %ld beyond descriptor table size %ld\n",
 901                                         (long) s, (long) dtblsize, 0 );
 902                                 slapd_close(s);
 903                                 continue;
 904                         }
 905 #endif
 906
 907 #ifdef LDAP_DEBUG
 908                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 909
 910                         /* newly accepted stream should not be in any of the FD SETS */
 911                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
 912                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
 913                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
 914
 915                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 916 #endif
 917
 918 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
 919 #ifdef LDAP_PF_LOCAL
 920                         /* for IPv4 and IPv6 sockets only */
 921                         if ( from.sa_addr.sa_family != AF_LOCAL )
 922 #endif /* LDAP_PF_LOCAL */
 923                         {
 924                                 int rc;
 925                                 int tmp;
 926 #ifdef SO_KEEPALIVE
 927                                 /* enable keep alives */
 928                                 tmp = 1;
 929                                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
 930                                         (char *) &tmp, sizeof(tmp) );
 931                                 if ( rc == AC_SOCKET_ERROR ) {
 932                                         int err = sock_errno();
 933                                         Debug( LDAP_DEBUG_ANY,
 934                                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
 935                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
 936                                 }
 937 #endif
 938 #ifdef TCP_NODELAY
 939                                 /* enable no delay */
 940                                 tmp = 1;
 941                                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
 942                                         (char *)&tmp, sizeof(tmp) );
 943                                 if ( rc == AC_SOCKET_ERROR ) {
 944                                         int err = sock_errno();
 945                                         Debug( LDAP_DEBUG_ANY,
 946                                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
 947                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
 948                                 }
 949 #endif
 950                         }
 951 #endif
 952
 953                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
 954                                 (long) s, 0, 0 );
 955
 956                         switch ( from.sa_addr.sa_family ) {
 957 #  ifdef LDAP_PF_LOCAL
 958                         case AF_LOCAL:
 959                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
 960                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
 961                                 break;
 962 #endif /* LDAP_PF_LOCAL */
 963
 964 #  ifdef LDAP_PF_INET6
 965                         case AF_INET6:
 966                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
 967                                 peeraddr = inet_ntoa( *((struct in_addr *)
 968                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
 969                                 sprintf( peername, "IP=%s:%d",
 970                                          peeraddr != NULL ? peeraddr : "unknown",
 971                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
 972                         } else {
 973                                 char addr[INET6_ADDRSTRLEN];
 974                                 sprintf( peername, "IP=%s %d",
 975                                          inet_ntop( AF_INET6,
 976                                                     &from.sa_in6_addr.sin6_addr,
 977                                                     addr, sizeof addr) ? addr : "unknown",
 978                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
 979                         }
 980                         break;
 981 #  endif /* LDAP_PF_INET6 */
 982
 983                         case AF_INET:
 984                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
 985                         sprintf( peername, "IP=%s:%d",
 986                                 peeraddr != NULL ? peeraddr : "unknown",
 987                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
 988                                 break;
 989
 990                         default:
 991                                 slapd_close(s);
 992                                 continue;
 993                         }
 994
 995                         if ( ( from.sa_addr.sa_family == AF_INET )
 996 #ifdef LDAP_PF_INET6
 997                                 || ( from.sa_addr.sa_family == AF_INET6 )
 998 #endif
 999                         ) {
1000 #ifdef SLAPD_RLOOKUPS
1001 #  ifdef LDAP_PF_INET6
1002                                 if ( from.sa_addr.sa_family == AF_INET6 )
1003                                         hp = gethostbyaddr(
1004                                                 (char *)&(from.sa_in6_addr.sin6_addr),
1005                                                 sizeof(from.sa_in6_addr.sin6_addr),
1006                                                 AF_INET6 );
1007                                 else
1008 #  endif /* LDAP_PF_INET6 */
1009                                 hp = gethostbyaddr(
1010                                         (char *) &(from.sa_in_addr.sin_addr),
1011                                         sizeof(from.sa_in_addr.sin_addr),
1012                                         AF_INET );
1013                                 dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
1014 #else
1015                                 dnsname = NULL;
1016 #endif /* SLAPD_RLOOKUPS */
1017
1018 #ifdef HAVE_TCPD
1019                                 if ( !hosts_ctl("slapd",
1020                                                 dnsname != NULL ? dnsname : STRING_UNKNOWN,
1021                                                 peeraddr != NULL ? peeraddr : STRING_UNKNOWN,
1022                                                 STRING_UNKNOWN ))
1023                                 {
1024                                         /* DENY ACCESS */
1025                                         Statslog( LDAP_DEBUG_ANY,
1026                                                 "fd=%ld host access from %s (%s) denied.\n",
1027                                                 (long) s,
1028                                                 dnsname != NULL ? dnsname : "unknown",
1029                                                 peeraddr != NULL ? peeraddr : "unknown",
1030                                                 0, 0 );
1031                                         slapd_close(s);
1032                                         continue;
1033                                 }
1034 #endif /* HAVE_TCPD */
1035                         }
1036
1037                         id = connection_init(s,
1038                                 slap_listeners[l]->sl_url,
1039                                 dnsname != NULL ? dnsname : "unknown",
1040                                 peername,
1041                                 slap_listeners[l]->sl_name,
1042 #ifdef HAVE_TLS
1043                                 slap_listeners[l]->sl_is_tls,
1044 #else
1045                                 0,
1046 #endif
1047                                 ssf,
1048                                 authid );
1049
1050                         if( authid ) ch_free(authid);
1051
1052                         if( id < 0 ) {
1053                                 Debug( LDAP_DEBUG_ANY,
1054                                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1055                                         (long) s,
1056                                         peername,
1057                                         slap_listeners[l]->sl_name );
1058                                 slapd_close(s);
1059                                 continue;
1060                         }
1061
1062                         Statslog( LDAP_DEBUG_STATS,
1063                                 "daemon: conn=%ld fd=%ld connection from %s (%s) accepted.\n",
1064                                 id, (long) s,
1065                                 peername,
1066                                 slap_listeners[l]->sl_name,
1067                                 0 );
1068
1069                         slapd_add( s );
1070                         continue;
1071                 }
1072
1073 #ifdef LDAP_DEBUG
1074                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1075 #ifdef HAVE_WINSOCK
1076                 for ( i = 0; i < readfds.fd_count; i++ ) {
1077                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1078                                 readfds.fd_array[i], "r", 0 );
1079                 }
1080                 for ( i = 0; i < writefds.fd_count; i++ ) {
1081                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1082                                 writefds.fd_array[i], "w", 0 );
1083                 }
1084 #else
1085                 for ( i = 0; i < nfds; i++ ) {
1086                         int     r, w;
1087                         int     is_listener = 0;
1088
1089                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1090                                 if ( i == slap_listeners[l]->sl_sd ) {
1091                                         is_listener = 1;
1092                                         break;
1093                                 }
1094                         }
1095                         if ( is_listener ) {
1096                                 continue;
1097                         }
1098                         r = FD_ISSET( i, &readfds );
1099                         w = FD_ISSET( i, &writefds );
1100                         if ( r || w ) {
1101                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1102                                     r ? "r" : "", w ? "w" : "" );
1103                         }
1104                 }
1105 #endif
1106                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1107 #endif
1108
1109                 /* loop through the writers */
1110 #ifdef HAVE_WINSOCK
1111                 for ( i = 0; i < writefds.fd_count; i++ )
1112 #else
1113                 for ( i = 0; i < nfds; i++ )
1114 #endif
1115                 {
1116                         ber_socket_t wd;
1117                         int is_listener = 0;
1118 #ifdef HAVE_WINSOCK
1119                         wd = writefds.fd_array[i];
1120 #else
1121                         if( ! FD_ISSET( i, &writefds ) ) {
1122                                 continue;
1123                         }
1124                         wd = i;
1125 #endif
1126
1127                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1128                                 if ( i == slap_listeners[l]->sl_sd ) {
1129                                         is_listener = 1;
1130                                         break;
1131                                 }
1132                         }
1133                         if ( is_listener ) {
1134                                 continue;
1135                         }
1136                         Debug( LDAP_DEBUG_CONNS,
1137                                 "daemon: write active on %d\n",
1138                                 wd, 0, 0 );
1139
1140                         /*
1141                          * NOTE: it is possible that the connection was closed
1142                          * and that the stream is now inactive.
1143                          * connection_write() must valid the stream is still
1144                          * active.
1145                          */
1146
1147                         if ( connection_write( wd ) < 0 ) {
1148                                 FD_CLR( (unsigned) wd, &readfds );
1149                                 slapd_close( wd );
1150                         }
1151                 }
1152
1153 #ifdef HAVE_WINSOCK
1154                 for ( i = 0; i < readfds.fd_count; i++ )
1155 #else
1156                 for ( i = 0; i < nfds; i++ )
1157 #endif
1158                 {
1159                         ber_socket_t rd;
1160                         int is_listener = 0;
1161
1162 #ifdef HAVE_WINSOCK
1163                         rd = readfds.fd_array[i];
1164 #else
1165                         if( ! FD_ISSET( i, &readfds ) ) {
1166                                 continue;
1167                         }
1168                         rd = i;
1169 #endif
1170
1171                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1172                                 if ( rd == slap_listeners[l]->sl_sd ) {
1173                                         is_listener = 1;
1174                                         break;
1175                                 }
1176                         }
1177                         if ( is_listener ) {
1178                                 continue;
1179                         }
1180
1181                         Debug ( LDAP_DEBUG_CONNS,
1182                                 "daemon: read activity on %d\n", rd, 0, 0 );
1183
1184                         /*
1185                          * NOTE: it is possible that the connection was closed
1186                          * and that the stream is now inactive.
1187                          * connection_read() must valid the stream is still
1188                          * active.
1189                          */
1190
1191                         if ( connection_read( rd ) < 0 ) {
1192                                 slapd_close( rd );
1193                         }
1194                 }
1195                 ldap_pvt_thread_yield();
1196         }
1197
1198         if( slapd_shutdown > 0 ) {
1199                 Debug( LDAP_DEBUG_TRACE,
1200                         "daemon: shutdown requested and initiated.\n",
1201                         0, 0, 0 );
1202
1203         } else if ( slapd_shutdown < 0 ) {
1204 #ifdef HAVE_NT_SERVICE_MANAGER
1205                 if (slapd_shutdown == -1)
1206                     Debug( LDAP_DEBUG_TRACE,
1207                           "daemon: shutdown initiated by Service Manager.\n",
1208                           0, 0, 0);
1209                 else
1210 #endif
1211                 Debug( LDAP_DEBUG_TRACE,
1212                         "daemon: abnormal condition, shutdown initiated.\n",
1213                         0, 0, 0 );
1214         } else {
1215                 Debug( LDAP_DEBUG_TRACE,
1216                         "daemon: no active streams, shutdown initiated.\n",
1217                         0, 0, 0 );
1218         }
1219
1220         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1221                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1222 #ifdef LDAP_PF_LOCAL
1223                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1224                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1225                         }
1226 #endif /* LDAP_PF_LOCAL */
1227                         slapd_close( slap_listeners[l]->sl_sd );
1228                         break;
1229                 }
1230         }
1231
1232         Debug( LDAP_DEBUG_ANY,
1233             "slapd shutdown: waiting for %d threads to terminate\n",
1234             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1235
1236         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1237
1238         return NULL;
1239 }
1240
1241
1242 int slapd_daemon( void )
1243 {
1244         int rc;
1245
1246         connections_init();
1247
1248 #define SLAPD_LISTENER_THREAD 1
1249 #if defined( SLAPD_LISTENER_THREAD )
1250         {
1251                 ldap_pvt_thread_t       listener_tid;
1252
1253                 /* listener as a separate THREAD */
1254                 rc = ldap_pvt_thread_create( &listener_tid,
1255                         0, slapd_daemon_task, NULL );
1256
1257                 if ( rc != 0 ) {
1258                         Debug( LDAP_DEBUG_ANY,
1259                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
1260                         return rc;
1261                 }
1262
1263                 /* wait for the listener thread to complete */
1264                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
1265         }
1266 #else
1267         /* experimental code */
1268         slapd_daemon_task( NULL );
1269 #endif
1270
1271         return 0;
1272
1273 }
1274
1275 int sockinit(void)
1276 {
1277 #if defined( HAVE_WINSOCK2 )
1278     WORD wVersionRequested;
1279         WSADATA wsaData;
1280         int err;
1281
1282         wVersionRequested = MAKEWORD( 2, 0 );
1283
1284         err = WSAStartup( wVersionRequested, &wsaData );
1285         if ( err != 0 ) {
1286                 /* Tell the user that we couldn't find a usable */
1287                 /* WinSock DLL.                                  */
1288                 return -1;
1289         }
1290
1291         /* Confirm that the WinSock DLL supports 2.0.*/
1292         /* Note that if the DLL supports versions greater    */
1293         /* than 2.0 in addition to 2.0, it will still return */
1294         /* 2.0 in wVersion since that is the version we      */
1295         /* requested.                                        */
1296
1297         if ( LOBYTE( wsaData.wVersion ) != 2 ||
1298                 HIBYTE( wsaData.wVersion ) != 0 )
1299         {
1300             /* Tell the user that we couldn't find a usable */
1301             /* WinSock DLL.                                  */
1302             WSACleanup();
1303             return -1;
1304         }
1305
1306         /* The WinSock DLL is acceptable. Proceed. */
1307 #elif defined( HAVE_WINSOCK )
1308         WSADATA wsaData;
1309         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
1310             return -1;
1311         }
1312 #endif
1313         return 0;
1314 }
1315
1316 int sockdestroy(void)
1317 {
1318 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
1319         WSACleanup();
1320 #endif
1321         return 0;
1322 }
1323
1324 RETSIGTYPE
1325 slap_sig_shutdown( int sig )
1326 {
1327         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
1328
1329         /*
1330          * If the NT Service Manager is controlling the server, we don't
1331          * want SIGBREAK to kill the server. For some strange reason,
1332          * SIGBREAK is generated when a user logs out.
1333          */
1334
1335 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
1336         if (is_NT_Service && sig == SIGBREAK)
1337             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
1338                   0, 0, 0);
1339         else
1340 #endif
1341         slapd_shutdown = sig;
1342
1343         WAKE_LISTENER(1);
1344
1345         /* reinstall self */
1346         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
1347 }
1348
1349 RETSIGTYPE
1350 slap_sig_wake( int sig )
1351 {
1352         WAKE_LISTENER(1);
1353
1354         /* reinstall self */
1355         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
1356 }
1357
1358
1359 void slapd_add_internal(ber_socket_t s) {
1360         slapd_add(s);
1361 }