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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2002 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 #define SLAPD_LISTEN 10
  63
  64 static ber_socket_t wake_sds[2];
  65
  66 #ifdef NO_THREADS
  67 static int waking;
  68 #define WAKE_LISTENER(w) \
  69 ((w && !waking) ? tcp_write( wake_sds[1], "0", 1 ), waking=1 : 0)
  70 #else
  71 #define WAKE_LISTENER(w) \
  72 do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0)
  73 #endif
  74
  75 #ifdef HAVE_NT_SERVICE_MANAGER
  76 /* in nt_main.c */
  77 extern ldap_pvt_thread_cond_t                   started_event;
  78 extern int        is_NT_Service;
  79 #endif
  80
  81 #ifndef HAVE_WINSOCK
  82 static
  83 #endif
  84 volatile sig_atomic_t slapd_shutdown = 0;
  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
 104
 105 /*
 106  * Add a descriptor to daemon control
 107  */
 108 static void slapd_add(ber_socket_t s) {
 109         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 110
 111         assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
 112         assert( !FD_ISSET( s, &slap_daemon.sd_readers ));
 113         assert( !FD_ISSET( s, &slap_daemon.sd_writers ));
 114
 115 #ifndef HAVE_WINSOCK
 116         if (s >= slap_daemon.sd_nfds) {
 117                 slap_daemon.sd_nfds = s + 1;
 118         }
 119 #endif
 120
 121         FD_SET( s, &slap_daemon.sd_actives );
 122         FD_SET( s, &slap_daemon.sd_readers );
 123
 124         Debug( LDAP_DEBUG_CONNS, "daemon: added %ld%s%s\n",
 125                 (long) s,
 126             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 127                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 128         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 129 }
 130
 131 /*
 132  * Remove the descriptor from daemon control
 133  */
 134 void slapd_remove(ber_socket_t s, int wake) {
 135         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 136
 137         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 138                 (long) s,
 139             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 140                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 141         FD_CLR( s, &slap_daemon.sd_actives );
 142         FD_CLR( s, &slap_daemon.sd_readers );
 143         FD_CLR( s, &slap_daemon.sd_writers );
 144
 145         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 146         WAKE_LISTENER(wake);
 147 }
 148
 149 void slapd_clr_write(ber_socket_t s, int wake) {
 150         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 151
 152         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 153         FD_CLR( s, &slap_daemon.sd_writers );
 154
 155         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 156         WAKE_LISTENER(wake);
 157 }
 158
 159 void slapd_set_write(ber_socket_t s, int wake) {
 160         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 161
 162         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 163         if (!FD_ISSET(s, &slap_daemon.sd_writers))
 164             FD_SET( (unsigned) s, &slap_daemon.sd_writers );
 165
 166         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 167         WAKE_LISTENER(wake);
 168 }
 169
 170 void slapd_clr_read(ber_socket_t s, int wake) {
 171         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 172
 173         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 174         FD_CLR( s, &slap_daemon.sd_readers );
 175
 176         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 177         WAKE_LISTENER(wake);
 178 }
 179
 180 void slapd_set_read(ber_socket_t s, int wake) {
 181         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 182
 183         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 184         if (!FD_ISSET(s, &slap_daemon.sd_readers))
 185             FD_SET( s, &slap_daemon.sd_readers );
 186
 187         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 188         WAKE_LISTENER(wake);
 189 }
 190
 191 static void slapd_close(ber_socket_t s) {
 192         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 193                 (long) s, 0, 0 );
 194         tcp_close(s);
 195 }
 196
 197 static void slap_free_listener_addresses(struct sockaddr **sal)
 198 {
 199         struct sockaddr **sap;
 200
 201         if (sal == NULL) {
 202                 return;
 203         }
 204
 205         for (sap = sal; *sap != NULL; sap++) {
 206                 ch_free(*sap);
 207         }
 208
 209         ch_free(sal);
 210 }
 211
 212 /* port = 0 indicates AF_LOCAL */
 213 static int slap_get_listener_addresses(
 214         const char *host,
 215         unsigned short port,
 216         struct sockaddr ***sal)
 217 {
 218         struct sockaddr **sap;
 219
 220 #ifdef LDAP_PF_LOCAL
 221         if ( port == 0 ) {
 222                 *sal = ch_malloc(2 * sizeof(void *));
 223                 if (*sal == NULL) {
 224                         return -1;
 225                 }
 226
 227                 sap = *sal;
 228                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 229                 if (*sap == NULL)
 230                         goto errexit;
 231                 sap[1] = NULL;
 232
 233                 if ( strlen(host) >
 234                      (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 235                         Debug( LDAP_DEBUG_ANY,
 236                                "daemon: domain socket path (%s) too long in URL",
 237                                host, 0, 0);
 238                         goto errexit;
 239                 }
 240
 241                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 242                 (*sap)->sa_family = AF_LOCAL;
 243                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 244         } else
 245 #endif
 246         {
 247 #ifdef HAVE_GETADDRINFO
 248                 struct addrinfo hints, *res, *sai;
 249                 int n, err;
 250                 char serv[7];
 251
 252                 memset( &hints, '\0', sizeof(hints) );
 253                 hints.ai_flags = AI_PASSIVE;
 254                 hints.ai_socktype = SOCK_STREAM;
 255                 hints.ai_family = AF_UNSPEC;
 256                 snprintf(serv, sizeof serv, "%d", port);
 257
 258                 if (err = getaddrinfo(host, serv, &hints, &res)) {
 259                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 260                                 AC_GAI_STRERROR(err), 0, 0);
 261                         return -1;
 262                 }
 263
 264                 sai = res;
 265                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
 266                         /* EMPTY */ ;
 267                 }
 268                 *sal = ch_calloc(n, sizeof(void *));
 269                 if (*sal == NULL) {
 270                         return -1;
 271                 }
 272
 273                 sap = *sal;
 274
 275                 for ( sai=res; sai; sai=sai->ai_next ) {
 276                         if( sai->ai_addr == NULL ) {
 277                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
 278                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 279                                 freeaddrinfo(res);
 280                                 goto errexit;
 281                         }
 282
 283                         switch (sai->ai_family) {
 284 #  ifdef LDAP_PF_INET6
 285                         case AF_INET6:
 286                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 287                                 if (*sap == NULL) {
 288                                         freeaddrinfo(res);
 289                                         goto errexit;
 290                                 }
 291                                 *(struct sockaddr_in6 *)*sap =
 292                                         *((struct sockaddr_in6 *)sai->ai_addr);
 293                                 break;
 294 #  endif
 295                         case AF_INET:
 296                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 297                                 if (*sap == NULL) {
 298                                         freeaddrinfo(res);
 299                                         goto errexit;
 300                                 }
 301                                 *(struct sockaddr_in *)*sap =
 302                                         *((struct sockaddr_in *)sai->ai_addr);
 303                                 break;
 304                         default:
 305                                 *sap = NULL;
 306                                 break;
 307                         }
 308                         if (*sap != NULL) {
 309                                 (*sap)->sa_family = sai->ai_family;
 310                                 sap++;
 311                         }
 312                 }
 313
 314                 *sap = NULL;
 315                 freeaddrinfo(res);
 316 #else
 317                 struct in_addr in;
 318
 319                 if ( host == NULL ) {
 320                         in.s_addr = htonl(INADDR_ANY);
 321
 322                 } else if ( !inet_aton( host, &in ) ) {
 323                         struct hostent *he = gethostbyname( host );
 324                         if( he == NULL ) {
 325                                 Debug( LDAP_DEBUG_ANY,
 326                                        "daemon: invalid host %s", host, 0, 0);
 327                                 return -1;
 328                         }
 329                         AC_MEMCPY( &in, he->h_addr, sizeof( in ) );
 330                 }
 331
 332                 *sal = ch_malloc(2 * sizeof(void *));
 333                 if (*sal == NULL) {
 334                         return -1;
 335                 }
 336
 337                 sap = *sal;
 338                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 339                 if (*sap == NULL) {
 340                         goto errexit;
 341                 }
 342                 sap[1] = NULL;
 343
 344                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_in) );
 345                 (*sap)->sa_family = AF_INET;
 346                 ((struct sockaddr_in *)*sap)->sin_port = htons(port);
 347                 ((struct sockaddr_in *)*sap)->sin_addr = in;
 348 #endif
 349         }
 350
 351         return 0;
 352
 353 errexit:
 354         slap_free_listener_addresses(*sal);
 355         return -1;
 356 }
 357
 358 static Listener * slap_open_listener(
 359         const char* url )
 360 {
 361         int     tmp, rc;
 362         Listener l;
 363         Listener *li;
 364         LDAPURLDesc *lud;
 365         unsigned short port;
 366         int err, addrlen;
 367         struct sockaddr **sal, **psal;
 368
 369         rc = ldap_url_parse( url, &lud );
 370
 371         if( rc != LDAP_URL_SUCCESS ) {
 372                 Debug( LDAP_DEBUG_ANY,
 373                         "daemon: listen URL \"%s\" parse error=%d\n",
 374                         url, rc, 0 );
 375                 return NULL;
 376         }
 377
 378 #ifndef HAVE_TLS
 379         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 380                 Debug( LDAP_DEBUG_ANY,
 381                         "daemon: TLS not supported (%s)\n",
 382                         url, 0, 0 );
 383                 ldap_free_urldesc( lud );
 384                 return NULL;
 385         }
 386
 387         if(! lud->lud_port ) {
 388                 lud->lud_port = LDAP_PORT;
 389         }
 390
 391 #else
 392         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 393
 394         if(! lud->lud_port ) {
 395                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 396         }
 397 #endif
 398
 399         port = (unsigned short) lud->lud_port;
 400
 401         if ( ldap_pvt_url_scheme2proto(lud->lud_scheme) == LDAP_PROTO_IPC ) {
 402 #ifdef LDAP_PF_LOCAL
 403                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 404                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 405                 } else {
 406                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 407                 }
 408 #else
 409
 410                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 411                         url, 0, 0);
 412                 ldap_free_urldesc( lud );
 413                 return NULL;
 414 #endif
 415         } else {
 416                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 417                         || strcmp(lud->lud_host, "*") == 0 )
 418                 {
 419                         err = slap_get_listener_addresses(NULL, port, &sal);
 420                 } else {
 421                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 422                 }
 423         }
 424
 425         ldap_free_urldesc( lud );
 426         if ( err ) {
 427                 return NULL;
 428         }
 429
 430         psal = sal;
 431         while ( *sal != NULL ) {
 432                 switch( (*sal)->sa_family ) {
 433                 case AF_INET:
 434 #ifdef LDAP_PF_INET6
 435                 case AF_INET6:
 436 #endif
 437 #ifdef LDAP_PF_LOCAL
 438                 case AF_LOCAL:
 439 #endif
 440                         break;
 441                 default:
 442                         sal++;
 443                         continue;
 444                 }
 445                 l.sl_sd = socket( (*sal)->sa_family, SOCK_STREAM, 0);
 446                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 447                         int err = sock_errno();
 448                         Debug( LDAP_DEBUG_ANY,
 449                                 "daemon: socket() failed errno=%d (%s)\n", err,
 450                                 sock_errstr(err), 0 );
 451                         sal++;
 452                         continue;
 453                 }
 454 #ifndef HAVE_WINSOCK
 455                 if ( l.sl_sd >= dtblsize ) {
 456                         Debug( LDAP_DEBUG_ANY,
 457                                "daemon: listener descriptor %ld is too great %ld\n",
 458                                (long) l.sl_sd, (long) dtblsize, 0 );
 459                         tcp_close( l.sl_sd );
 460                         sal++;
 461                         continue;
 462                 }
 463 #endif
 464 #ifdef LDAP_PF_LOCAL
 465                 if ( (*sal)->sa_family == AF_LOCAL ) {
 466                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 467                 } else
 468 #endif
 469                 {
 470 #ifdef SO_REUSEADDR
 471                         /* enable address reuse */
 472                         tmp = 1;
 473                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 474                                          (char *) &tmp, sizeof(tmp) );
 475                         if ( rc == AC_SOCKET_ERROR ) {
 476                                 int err = sock_errno();
 477                                 Debug( LDAP_DEBUG_ANY,
 478                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 479                                        (long) l.sl_sd, err, sock_errstr(err) );
 480                         }
 481 #endif
 482                 }
 483
 484                 switch( (*sal)->sa_family ) {
 485                 case AF_INET:
 486                         addrlen = sizeof(struct sockaddr_in);
 487                         break;
 488 #ifdef LDAP_PF_INET6
 489                 case AF_INET6:
 490                         addrlen = sizeof(struct sockaddr_in6);
 491                         break;
 492 #endif
 493 #ifdef LDAP_PF_LOCAL
 494                 case AF_LOCAL:
 495                         addrlen = sizeof(struct sockaddr_un);
 496                         break;
 497 #endif
 498                 }
 499
 500                 if (!bind(l.sl_sd, *sal, addrlen))
 501                         break;
 502                 err = sock_errno();
 503                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 504                        (long) l.sl_sd, err, sock_errstr(err) );
 505                 tcp_close( l.sl_sd );
 506                 sal++;
 507         } /* while ( *sal != NULL ) */
 508
 509         if ( *sal == NULL ) {
 510                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed\n",
 511                         (long) l.sl_sd, 0, 0 );
 512                 slap_free_listener_addresses(psal);
 513                 return NULL;
 514         }
 515
 516         switch ( (*sal)->sa_family ) {
 517 #ifdef LDAP_PF_LOCAL
 518         case AF_LOCAL: {
 519                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 520                 if ( chmod( addr, S_IRWXU ) < 0 ) {
 521                         int err = sock_errno();
 522                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 523                                (long) l.sl_sd, err, sock_errstr(err) );
 524                         tcp_close( l.sl_sd );
 525                         slap_free_listener_addresses(psal);
 526                         return NULL;
 527                 }
 528                 l.sl_name = ch_malloc( strlen(addr) + sizeof("PATH=") );
 529                 sprintf( l.sl_name, "PATH=%s", addr );
 530         } break;
 531 #endif /* LDAP_PF_LOCAL */
 532
 533         case AF_INET: {
 534                 char *s;
 535 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
 536                 char addr[INET_ADDRSTRLEN];
 537                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
 538                            addr, sizeof(addr) );
 539                 s = addr;
 540 #else
 541                 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
 542 #endif
 543                 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
 544                 l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65535") );
 545                 sprintf( l.sl_name, "IP=%s:%d",
 546                          s != NULL ? s : "unknown" , port );
 547         } break;
 548
 549 #ifdef LDAP_PF_INET6
 550         case AF_INET6: {
 551                 char addr[INET6_ADDRSTRLEN];
 552                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
 553                            addr, sizeof addr);
 554                 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
 555                 l.sl_name = ch_malloc( strlen(addr) + sizeof("IP= 65535") );
 556                 sprintf( l.sl_name, "IP=%s %d", addr, port );
 557         } break;
 558 #endif /* LDAP_PF_INET6 */
 559
 560         default:
 561                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 562                         (int) (*sal)->sa_family, 0, 0 );
 563                 break;
 564         }
 565
 566         slap_free_listener_addresses(psal);
 567
 568         l.sl_url = ch_strdup( url );
 569         li = ch_malloc( sizeof( Listener ) );
 570         *li = l;
 571
 572         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 573                 l.sl_url, 0, 0 );
 574         return li;
 575 }
 576
 577 static int sockinit(void);
 578 static int sockdestroy(void);
 579
 580 int slapd_daemon_init( const char *urls )
 581 {
 582         int i, rc;
 583         char **u;
 584
 585         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 586                 urls ? urls : "<null>", 0, 0 );
 587         if( (rc = sockinit()) != 0 ) {
 588                 return rc;
 589         }
 590
 591 #ifdef HAVE_SYSCONF
 592         dtblsize = sysconf( _SC_OPEN_MAX );
 593 #elif HAVE_GETDTABLESIZE
 594         dtblsize = getdtablesize();
 595 #else
 596         dtblsize = FD_SETSIZE;
 597 #endif
 598
 599 #ifdef FD_SETSIZE
 600         if(dtblsize > FD_SETSIZE) {
 601                 dtblsize = FD_SETSIZE;
 602         }
 603 #endif  /* !FD_SETSIZE */
 604
 605         /* open a pipe (or something equivalent connected to itself).
 606          * we write a byte on this fd whenever we catch a signal. The main
 607          * loop will be select'ing on this socket, and will wake up when
 608          * this byte arrives.
 609          */
 610         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 611                 Debug( LDAP_DEBUG_ANY,
 612                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 613                 return rc;
 614         }
 615
 616         FD_ZERO( &slap_daemon.sd_readers );
 617         FD_ZERO( &slap_daemon.sd_writers );
 618
 619         if( urls == NULL ) {
 620                 urls = "ldap:///";
 621         }
 622
 623         u = str2charray( urls, " " );
 624
 625         if( u == NULL || u[0] == NULL ) {
 626                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
 627                         urls, 0, 0 );
 628                 return -1;
 629         }
 630
 631         for( i=0; u[i] != NULL; i++ ) {
 632                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
 633                         u[i], 0, 0 );
 634         }
 635
 636         if( i == 0 ) {
 637                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
 638                         urls, 0, 0 );
 639                 charray_free( u );
 640                 return -1;
 641         }
 642
 643         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
 644                 i, 0, 0 );
 645         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
 646
 647         for(i = 0; u[i] != NULL; i++ ) {
 648                 slap_listeners[i] = slap_open_listener( u[i] );
 649
 650                 if( slap_listeners[i] == NULL ) {
 651                         charray_free( u );
 652                         return -1;
 653                 }
 654         }
 655         slap_listeners[i] = NULL;
 656
 657         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
 658                 i, 0, 0 );
 659
 660
 661         charray_free( u );
 662         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
 663         return !i;
 664 }
 665
 666
 667 int
 668 slapd_daemon_destroy(void)
 669 {
 670         connections_destroy();
 671         tcp_close( wake_sds[1] );
 672         tcp_close( wake_sds[0] );
 673         sockdestroy();
 674
 675
 676         return 0;
 677 }
 678
 679
 680 static void *
 681 slapd_daemon_task(
 682         void *ptr
 683 )
 684 {
 685         int l;
 686         time_t  last_idle_check = slap_get_time();
 687         time( &starttime );
 688
 689         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 690                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 691                         continue;
 692
 693                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
 694                         int err = sock_errno();
 695                         Debug( LDAP_DEBUG_ANY,
 696                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
 697                                         slap_listeners[l]->sl_url, err,
 698                                         sock_errstr(err) );
 699                         return( (void*)-1 );
 700                 }
 701
 702                 slapd_add( slap_listeners[l]->sl_sd );
 703         }
 704
 705 #ifdef HAVE_NT_SERVICE_MANAGER
 706         if ( started_event != NULL ) {
 707                 ldap_pvt_thread_cond_signal( &started_event );
 708         }
 709 #endif
 710         /* initialization complete. Here comes the loop. */
 711
 712         while ( !slapd_shutdown ) {
 713                 ber_socket_t i;
 714                 int ns;
 715                 int at;
 716                 ber_socket_t nfds;
 717 #define SLAPD_EBADF_LIMIT 16
 718                 int ebadf = 0;
 719                 int emfile = 0;
 720
 721 #define SLAPD_IDLE_CHECK_LIMIT 4
 722                 time_t  now = slap_get_time();
 723
 724
 725                 fd_set                  readfds;
 726                 fd_set                  writefds;
 727                 Sockaddr                from;
 728
 729 #if defined(SLAPD_RLOOKUPS)
 730                 struct hostent          *hp;
 731 #endif
 732                 struct timeval          zero;
 733                 struct timeval          *tvp;
 734
 735                 if( emfile || ( global_idletimeout > 0 && difftime(
 736                         last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT,
 737                         now ) < 0 ))
 738                 {
 739                         connections_timeout_idle(now);
 740                 }
 741
 742                 FD_ZERO( &writefds );
 743                 FD_ZERO( &readfds );
 744
 745                 zero.tv_sec = 0;
 746                 zero.tv_usec = 0;
 747
 748                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 749
 750 #ifdef FD_SET_MANUAL_COPY
 751                 for( s = 0; s < nfds; s++ ) {
 752                         if(FD_ISSET( &slap_sd_readers, s )) {
 753                                 FD_SET( s, &readfds );
 754                         }
 755                         if(FD_ISSET( &slap_sd_writers, s )) {
 756                                 FD_SET( s, &writefds );
 757                         }
 758                 }
 759 #else
 760                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
 761                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
 762 #endif
 763                 assert(!FD_ISSET(wake_sds[0], &readfds));
 764                 FD_SET( wake_sds[0], &readfds );
 765
 766                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 767                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 768                                 continue;
 769                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
 770                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
 771                 }
 772
 773 #ifndef HAVE_WINSOCK
 774                 nfds = slap_daemon.sd_nfds;
 775 #else
 776                 nfds = dtblsize;
 777 #endif
 778
 779                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 780
 781                 at = ldap_pvt_thread_pool_backload(&connection_pool);
 782
 783 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
 784                 tvp = NULL;
 785 #else
 786                 tvp = at ? &zero : NULL;
 787 #endif
 788
 789                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 790                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 791                                 continue;
 792
 793                         Debug( LDAP_DEBUG_CONNS,
 794                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
 795                                         slap_listeners[l]->sl_sd, at,
 796                                         tvp == NULL ? "NULL" : "zero" );
 797                 }
 798
 799                 switch(ns = select( nfds, &readfds,
 800 #ifdef HAVE_WINSOCK
 801                         /* don't pass empty fd_set */
 802                         ( writefds.fd_count > 0 ? &writefds : NULL ),
 803 #else
 804                         &writefds,
 805 #endif
 806                         NULL, tvp ))
 807                 {
 808                 case -1: {      /* failure - try again */
 809                                 int err = sock_errno();
 810
 811                                 if( err == EBADF
 812 #ifdef WSAENOTSOCK
 813                                         /* you'd think this would be EBADF */
 814                                         || err == WSAENOTSOCK
 815 #endif
 816                                 ) {
 817                                         if (++ebadf < SLAPD_EBADF_LIMIT)
 818                                                 continue;
 819                                 }
 820
 821                                 if( err != EINTR ) {
 822                                         Debug( LDAP_DEBUG_CONNS,
 823                                                 "daemon: select failed (%d): %s\n",
 824                                                 err, sock_errstr(err), 0 );
 825                                         slapd_shutdown = -1;
 826                                 }
 827                         }
 828                         continue;
 829
 830                 case 0:         /* timeout - let threads run */
 831                         ebadf = 0;
 832                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
 833                             0, 0, 0 );
 834                         ldap_pvt_thread_yield();
 835                         continue;
 836
 837                 default:        /* something happened - deal with it */
 838                         if( slapd_shutdown ) continue;
 839
 840                         ebadf = 0;
 841                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
 842                                 ns, 0, 0 );
 843                         /* FALL THRU */
 844                 }
 845
 846                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
 847                         char c[BUFSIZ];
 848                         tcp_read( wake_sds[0], c, sizeof(c) );
 849 #ifdef NO_THREADS
 850                         waking = 0;
 851 #endif
 852                         continue;
 853                 }
 854
 855                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 856                         ber_socket_t s;
 857                         socklen_t len = sizeof(from);
 858                         long id;
 859                         slap_ssf_t ssf = 0;
 860                         char *authid = NULL;
 861
 862                         char    *dnsname = NULL;
 863                         char    *peeraddr;
 864 #ifdef LDAP_PF_LOCAL
 865                         char    peername[MAXPATHLEN + sizeof("PATH=")];
 866 #elif defined(LDAP_PF_INET6)
 867                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
 868 #else
 869                         char    peername[sizeof("IP=255.255.255.255:65336")];
 870 #endif /* LDAP_PF_LOCAL */
 871
 872                         peername[0] = '\0';
 873
 874                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 875                                 continue;
 876
 877                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
 878                                 continue;
 879
 880                         s = accept( slap_listeners[l]->sl_sd,
 881                                 (struct sockaddr *) &from, &len );
 882                         if ( s == AC_SOCKET_INVALID ) {
 883                                 int err = sock_errno();
 884
 885 #ifdef EMFILE
 886                                 if( err == EMFILE ) {
 887                                         emfile++;
 888                                 } else
 889 #endif
 890 #ifdef ENFILE
 891                                 if( err == ENFILE ) {
 892                                         emfile++;
 893                                 } else
 894 #endif
 895                                 {
 896                                         emfile=0;
 897                                 }
 898
 899                                 if( emfile < 3 ) {
 900                                         Debug( LDAP_DEBUG_ANY,
 901                                             "daemon: accept(%ld) failed errno=%d (%s)\n",
 902                                             (long) slap_listeners[l]->sl_sd, err,
 903                                             sock_errstr(err) );
 904                                 } else {
 905                                         /* prevent busy loop */
 906 #  ifdef HAVE_USLEEP
 907                                         if( emfile % 4 == 3 ) usleep( 250 );
 908 #  else
 909                                         if( emfile % 8 == 7 ) sleep( 1 );
 910 #  endif
 911                                 }
 912
 913                                 ldap_pvt_thread_yield();
 914                                 continue;
 915                         }
 916                         emfile = 0;
 917
 918 #ifndef HAVE_WINSOCK
 919                         /* make sure descriptor number isn't too great */
 920                         if ( s >= dtblsize ) {
 921                                 Debug( LDAP_DEBUG_ANY,
 922                                         "daemon: %ld beyond descriptor table size %ld\n",
 923                                         (long) s, (long) dtblsize, 0 );
 924
 925                                 slapd_close(s);
 926                                 ldap_pvt_thread_yield();
 927                                 continue;
 928                         }
 929 #endif
 930
 931 #ifdef LDAP_DEBUG
 932                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 933
 934                         /* newly accepted stream should not be in any of the FD SETS */
 935                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
 936                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
 937                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
 938
 939                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 940 #endif
 941
 942 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
 943 #ifdef LDAP_PF_LOCAL
 944                         /* for IPv4 and IPv6 sockets only */
 945                         if ( from.sa_addr.sa_family != AF_LOCAL )
 946 #endif /* LDAP_PF_LOCAL */
 947                         {
 948                                 int rc;
 949                                 int tmp;
 950 #ifdef SO_KEEPALIVE
 951                                 /* enable keep alives */
 952                                 tmp = 1;
 953                                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
 954                                         (char *) &tmp, sizeof(tmp) );
 955                                 if ( rc == AC_SOCKET_ERROR ) {
 956                                         int err = sock_errno();
 957                                         Debug( LDAP_DEBUG_ANY,
 958                                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
 959                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
 960                                 }
 961 #endif
 962 #ifdef TCP_NODELAY
 963                                 /* enable no delay */
 964                                 tmp = 1;
 965                                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
 966                                         (char *)&tmp, sizeof(tmp) );
 967                                 if ( rc == AC_SOCKET_ERROR ) {
 968                                         int err = sock_errno();
 969                                         Debug( LDAP_DEBUG_ANY,
 970                                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
 971                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
 972                                 }
 973 #endif
 974                         }
 975 #endif
 976
 977                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
 978                                 (long) s, 0, 0 );
 979                         switch ( from.sa_addr.sa_family ) {
 980 #  ifdef LDAP_PF_LOCAL
 981                         case AF_LOCAL:
 982                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
 983                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
 984                                 break;
 985 #endif /* LDAP_PF_LOCAL */
 986
 987 #  ifdef LDAP_PF_INET6
 988                         case AF_INET6:
 989                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
 990                                 peeraddr = inet_ntoa( *((struct in_addr *)
 991                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
 992                                 sprintf( peername, "IP=%s:%d",
 993                                          peeraddr != NULL ? peeraddr : "unknown",
 994                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
 995                         } else {
 996                                 char addr[INET6_ADDRSTRLEN];
 997                                 sprintf( peername, "IP=%s %d",
 998                                          inet_ntop( AF_INET6,
 999                                                     &from.sa_in6_addr.sin6_addr,
1000                                                     addr, sizeof addr) ? addr : "unknown",
1001                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1002                         }
1003                         break;
1004 #  endif /* LDAP_PF_INET6 */
1005
1006                         case AF_INET:
1007                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1008                         sprintf( peername, "IP=%s:%d",
1009                                 peeraddr != NULL ? peeraddr : "unknown",
1010                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1011                                 break;
1012
1013                         default:
1014                                 slapd_close(s);
1015                                 continue;
1016                         }
1017
1018                         if ( ( from.sa_addr.sa_family == AF_INET )
1019 #ifdef LDAP_PF_INET6
1020                                 || ( from.sa_addr.sa_family == AF_INET6 )
1021 #endif
1022                         ) {
1023 #ifdef SLAPD_RLOOKUPS
1024 #  ifdef LDAP_PF_INET6
1025                                 if ( from.sa_addr.sa_family == AF_INET6 )
1026                                         hp = gethostbyaddr(
1027                                                 (char *)&(from.sa_in6_addr.sin6_addr),
1028                                                 sizeof(from.sa_in6_addr.sin6_addr),
1029                                                 AF_INET6 );
1030                                 else
1031 #  endif /* LDAP_PF_INET6 */
1032                                 hp = gethostbyaddr(
1033                                         (char *) &(from.sa_in_addr.sin_addr),
1034                                         sizeof(from.sa_in_addr.sin_addr),
1035                                         AF_INET );
1036                                 dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
1037 #else
1038                                 dnsname = NULL;
1039 #endif /* SLAPD_RLOOKUPS */
1040
1041 #ifdef HAVE_TCPD
1042                                 if ( !hosts_ctl("slapd",
1043                                                 dnsname != NULL ? dnsname : STRING_UNKNOWN,
1044                                                 peeraddr != NULL ? peeraddr : STRING_UNKNOWN,
1045                                                 STRING_UNKNOWN ))
1046                                 {
1047                                         /* DENY ACCESS */
1048                                         Statslog( LDAP_DEBUG_ANY,
1049                                                 "fd=%ld host access from %s (%s) denied.\n",
1050                                                 (long) s,
1051                                                 dnsname != NULL ? dnsname : "unknown",
1052                                                 peeraddr != NULL ? peeraddr : "unknown",
1053                                                 0, 0 );
1054                                         slapd_close(s);
1055                                         continue;
1056                                 }
1057 #endif /* HAVE_TCPD */
1058                         }
1059
1060                         id = connection_init(s,
1061                                 slap_listeners[l]->sl_url,
1062                                 dnsname != NULL ? dnsname : "unknown",
1063                                 peername,
1064                                 slap_listeners[l]->sl_name,
1065 #ifdef HAVE_TLS
1066                                 slap_listeners[l]->sl_is_tls,
1067 #else
1068                                 0,
1069 #endif
1070                                 ssf,
1071                                 authid );
1072
1073                         if( authid ) ch_free(authid);
1074
1075                         if( id < 0 ) {
1076                                 Debug( LDAP_DEBUG_ANY,
1077                                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1078                                         (long) s,
1079                                         peername,
1080                                         slap_listeners[l]->sl_name );
1081                                 slapd_close(s);
1082                                 continue;
1083                         }
1084
1085                         Statslog( LDAP_DEBUG_STATS,
1086                                 "daemon: conn=%ld fd=%ld connection from %s (%s) accepted.\n",
1087                                 id, (long) s,
1088                                 peername,
1089                                 slap_listeners[l]->sl_name,
1090                                 0 );
1091
1092                         slapd_add( s );
1093                         continue;
1094                 }
1095
1096 #ifdef LDAP_DEBUG
1097                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1098 #ifdef HAVE_WINSOCK
1099                 for ( i = 0; i < readfds.fd_count; i++ ) {
1100                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1101                                 readfds.fd_array[i], "r", 0 );
1102                 }
1103                 for ( i = 0; i < writefds.fd_count; i++ ) {
1104                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1105                                 writefds.fd_array[i], "w", 0 );
1106                 }
1107
1108 #else
1109                 for ( i = 0; i < nfds; i++ ) {
1110                         int     r, w;
1111                         int     is_listener = 0;
1112
1113                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1114                                 if ( i == slap_listeners[l]->sl_sd ) {
1115                                         is_listener = 1;
1116                                         break;
1117                                 }
1118                         }
1119                         if ( is_listener ) {
1120                                 continue;
1121                         }
1122                         r = FD_ISSET( i, &readfds );
1123                         w = FD_ISSET( i, &writefds );
1124                         if ( r || w ) {
1125                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1126                                     r ? "r" : "", w ? "w" : "" );
1127                         }
1128                 }
1129 #endif
1130                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1131
1132 #endif
1133
1134                 /* loop through the writers */
1135 #ifdef HAVE_WINSOCK
1136                 for ( i = 0; i < writefds.fd_count; i++ )
1137 #else
1138                 for ( i = 0; i < nfds; i++ )
1139 #endif
1140                 {
1141                         ber_socket_t wd;
1142                         int is_listener = 0;
1143 #ifdef HAVE_WINSOCK
1144                         wd = writefds.fd_array[i];
1145 #else
1146                         if( ! FD_ISSET( i, &writefds ) ) {
1147                                 continue;
1148                         }
1149                         wd = i;
1150 #endif
1151
1152                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1153                                 if ( i == slap_listeners[l]->sl_sd ) {
1154                                         is_listener = 1;
1155                                         break;
1156                                 }
1157                         }
1158                         if ( is_listener ) {
1159                                 continue;
1160                         }
1161                         Debug( LDAP_DEBUG_CONNS,
1162                                 "daemon: write active on %d\n",
1163                                 wd, 0, 0 );
1164                         /*
1165                          * NOTE: it is possible that the connection was closed
1166                          * and that the stream is now inactive.
1167                          * connection_write() must valid the stream is still
1168                          * active.
1169                          */
1170
1171                         if ( connection_write( wd ) < 0 ) {
1172                                 FD_CLR( (unsigned) wd, &readfds );
1173                                 slapd_close( wd );
1174                         }
1175                 }
1176
1177 #ifdef HAVE_WINSOCK
1178                 for ( i = 0; i < readfds.fd_count; i++ )
1179 #else
1180                 for ( i = 0; i < nfds; i++ )
1181 #endif
1182                 {
1183                         ber_socket_t rd;
1184                         int is_listener = 0;
1185
1186 #ifdef HAVE_WINSOCK
1187                         rd = readfds.fd_array[i];
1188 #else
1189                         if( ! FD_ISSET( i, &readfds ) ) {
1190                                 continue;
1191                         }
1192                         rd = i;
1193 #endif
1194
1195                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1196                                 if ( rd == slap_listeners[l]->sl_sd ) {
1197                                         is_listener = 1;
1198                                         break;
1199                                 }
1200                         }
1201                         if ( is_listener ) {
1202                                 continue;
1203                         }
1204
1205                         Debug ( LDAP_DEBUG_CONNS,
1206                                 "daemon: read activity on %d\n", rd, 0, 0 );
1207                         /*
1208                          * NOTE: it is possible that the connection was closed
1209                          * and that the stream is now inactive.
1210                          * connection_read() must valid the stream is still
1211                          * active.
1212                          */
1213
1214                         if ( connection_read( rd ) < 0 ) {
1215                                 slapd_close( rd );
1216                         }
1217                 }
1218                 ldap_pvt_thread_yield();
1219         }
1220
1221         if( slapd_shutdown > 0 ) {
1222                 Debug( LDAP_DEBUG_TRACE,
1223                         "daemon: shutdown requested and initiated.\n",
1224                         0, 0, 0 );
1225
1226         } else if ( slapd_shutdown < 0 ) {
1227 #ifdef HAVE_NT_SERVICE_MANAGER
1228                 if (slapd_shutdown == -1)
1229                 {
1230                         Debug( LDAP_DEBUG_TRACE,
1231                                "daemon: shutdown initiated by Service Manager.\n",
1232                                0, 0, 0);
1233                 }
1234                 else
1235 #endif
1236                 {
1237                         Debug( LDAP_DEBUG_TRACE,
1238                                "daemon: abnormal condition, shutdown initiated.\n",
1239                                0, 0, 0 );
1240                 }
1241         } else {
1242                 Debug( LDAP_DEBUG_TRACE,
1243                        "daemon: no active streams, shutdown initiated.\n",
1244                        0, 0, 0 );
1245         }
1246
1247         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1248                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1249 #ifdef LDAP_PF_LOCAL
1250                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1251                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1252                         }
1253 #endif /* LDAP_PF_LOCAL */
1254                         slapd_close( slap_listeners[l]->sl_sd );
1255                         break;
1256                 }
1257         }
1258
1259         Debug( LDAP_DEBUG_ANY,
1260             "slapd shutdown: waiting for %d threads to terminate\n",
1261             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1262         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1263
1264         return NULL;
1265 }
1266
1267
1268 int slapd_daemon( void )
1269 {
1270         int rc;
1271
1272         connections_init();
1273
1274 #define SLAPD_LISTENER_THREAD 1
1275 #if defined( SLAPD_LISTENER_THREAD )
1276         {
1277                 ldap_pvt_thread_t       listener_tid;
1278
1279                 /* listener as a separate THREAD */
1280                 rc = ldap_pvt_thread_create( &listener_tid,
1281                         0, slapd_daemon_task, NULL );
1282
1283                 if ( rc != 0 ) {
1284                         Debug( LDAP_DEBUG_ANY,
1285                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
1286                         return rc;
1287                 }
1288
1289                 /* wait for the listener thread to complete */
1290                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
1291         }
1292 #else
1293         /* experimental code */
1294         slapd_daemon_task( NULL );
1295 #endif
1296
1297         return 0;
1298
1299 }
1300
1301 int sockinit(void)
1302 {
1303 #if defined( HAVE_WINSOCK2 )
1304     WORD wVersionRequested;
1305         WSADATA wsaData;
1306         int err;
1307
1308         wVersionRequested = MAKEWORD( 2, 0 );
1309
1310         err = WSAStartup( wVersionRequested, &wsaData );
1311         if ( err != 0 ) {
1312                 /* Tell the user that we couldn't find a usable */
1313                 /* WinSock DLL.                                  */
1314                 return -1;
1315         }
1316
1317         /* Confirm that the WinSock DLL supports 2.0.*/
1318         /* Note that if the DLL supports versions greater    */
1319         /* than 2.0 in addition to 2.0, it will still return */
1320         /* 2.0 in wVersion since that is the version we      */
1321         /* requested.                                        */
1322
1323         if ( LOBYTE( wsaData.wVersion ) != 2 ||
1324                 HIBYTE( wsaData.wVersion ) != 0 )
1325         {
1326             /* Tell the user that we couldn't find a usable */
1327             /* WinSock DLL.                                  */
1328             WSACleanup();
1329             return -1;
1330         }
1331
1332         /* The WinSock DLL is acceptable. Proceed. */
1333 #elif defined( HAVE_WINSOCK )
1334         WSADATA wsaData;
1335         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
1336             return -1;
1337         }
1338 #endif
1339         return 0;
1340 }
1341
1342 int sockdestroy(void)
1343 {
1344 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
1345         WSACleanup();
1346 #endif
1347         return 0;
1348 }
1349
1350 RETSIGTYPE
1351 slap_sig_shutdown( int sig )
1352 {
1353         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
1354
1355         /*
1356          * If the NT Service Manager is controlling the server, we don't
1357          * want SIGBREAK to kill the server. For some strange reason,
1358          * SIGBREAK is generated when a user logs out.
1359          */
1360
1361 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
1362         if (is_NT_Service && sig == SIGBREAK)
1363             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
1364                   0, 0, 0);
1365         else
1366 #endif
1367         slapd_shutdown = sig;
1368
1369         WAKE_LISTENER(1);
1370
1371         /* reinstall self */
1372         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
1373 }
1374
1375 RETSIGTYPE
1376 slap_sig_wake( int sig )
1377 {
1378         WAKE_LISTENER(1);
1379
1380         /* reinstall self */
1381         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
1382 }
1383
1384
1385 void slapd_add_internal(ber_socket_t s) {
1386         slapd_add(s);
1387 }