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/socket.h>
  14 #include <ac/string.h>
  15 #include <ac/time.h>
  16 #include <ac/unistd.h>
  17
  18 #include "ldap_pvt.h"
  19 #include "ldap_pvt_thread.h"
  20 #include "lutil.h"
  21 #include "slap.h"
  22
  23 #ifdef HAVE_TCPD
  24 #include <tcpd.h>
  25
  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 /* this should go in <ldap.h> as soon as it is accepted */
  33 #define LDAPI_MOD_URLEXT                "x-mod"
  34 #endif /* LDAP_PF_LOCAL */
  35
  36 int slap_inet4or6 = AF_UNSPEC;
  37
  38 /* globals */
  39 time_t starttime;
  40 ber_socket_t dtblsize;
  41
  42 Listener **slap_listeners = NULL;
  43
  44 #define SLAPD_LISTEN 10
  45
  46 static ber_socket_t wake_sds[2];
  47
  48 #ifdef NO_THREADS
  49 static int waking;
  50 #define WAKE_LISTENER(w) \
  51 ((w && !waking) ? tcp_write( wake_sds[1], "0", 1 ), waking=1 : 0)
  52 #else
  53 #define WAKE_LISTENER(w) \
  54 do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0)
  55 #endif
  56
  57 #ifndef HAVE_WINSOCK
  58 static
  59 #endif
  60 volatile sig_atomic_t slapd_shutdown = 0, slapd_gentle_shutdown = 0;
  61
  62 static struct slap_daemon {
  63         ldap_pvt_thread_mutex_t sd_mutex;
  64
  65         ber_socket_t sd_nactives;
  66
  67 #ifndef HAVE_WINSOCK
  68         /* In winsock, accept() returns values higher than dtblsize
  69                 so don't bother with this optimization */
  70         int sd_nfds;
  71 #endif
  72
  73         fd_set sd_actives;
  74         fd_set sd_readers;
  75         fd_set sd_writers;
  76 } slap_daemon;
  77
  78
  79
  80 #ifdef HAVE_SLP
  81 /*
  82  * SLP related functions
  83  */
  84 #include <slp.h>
  85
  86 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
  87 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
  88 static char** slapd_srvurls = NULL;
  89 static SLPHandle slapd_hslp = 0;
  90
  91 void slapd_slp_init( const char* urls ) {
  92         int i;
  93
  94         slapd_srvurls = str2charray( urls, " " );
  95
  96         if( slapd_srvurls == NULL ) return;
  97
  98         /* find and expand INADDR_ANY URLs */
  99         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 100                 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
 101                         char *host = ldap_pvt_get_fqdn( NULL );
 102                         if ( host != NULL ) {
 103                                 slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
 104                                         strlen( host ) +
 105                                         sizeof( LDAP_SRVTYPE_PREFIX ) );
 106                                 strcpy( slap_strcopy(slapd_srvurls[i],
 107                                         LDAP_SRVTYPE_PREFIX ), host );
 108
 109                                 ch_free( host );
 110                         }
 111
 112                 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
 113                         char *host = ldap_pvt_get_fqdn( NULL );
 114                         if ( host != NULL ) {
 115                                 slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
 116                                         strlen( host ) +
 117                                         sizeof( LDAPS_SRVTYPE_PREFIX ) );
 118                                 strcpy( slap_strcopy(slapd_srvurls[i],
 119                                         LDAPS_SRVTYPE_PREFIX ), host );
 120
 121                                 ch_free( host );
 122                         }
 123                 }
 124         }
 125
 126         /* open the SLP handle */
 127         SLPOpen( "en", 0, &slapd_hslp );
 128 }
 129
 130 void slapd_slp_deinit() {
 131         if( slapd_srvurls == NULL ) return;
 132
 133         charray_free( slapd_srvurls );
 134         slapd_srvurls = NULL;
 135
 136         /* close the SLP handle */
 137         SLPClose( slapd_hslp );
 138 }
 139
 140 void slapd_slp_regreport(
 141         SLPHandle hslp,
 142         SLPError errcode,
 143         void* cookie )
 144 {
 145         /* empty report */
 146 }
 147
 148 void slapd_slp_reg() {
 149         int i;
 150
 151         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 152                 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
 153                                 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
 154                     strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
 155                                 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
 156                 {
 157                         SLPReg( slapd_hslp,
 158                                 slapd_srvurls[i],
 159                                 SLP_LIFETIME_MAXIMUM,
 160                                 "ldap",
 161                                 "",
 162                                 1,
 163                                 slapd_slp_regreport,
 164                                 NULL );
 165                 }
 166         }
 167 }
 168
 169 void slapd_slp_dereg() {
 170         int i;
 171
 172         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 173                 SLPDereg( slapd_hslp,
 174                         slapd_srvurls[i],
 175                         slapd_slp_regreport,
 176                         NULL );
 177         }
 178 }
 179 #endif /* HAVE_SLP */
 180
 181 /*
 182  * Add a descriptor to daemon control
 183  */
 184 static void slapd_add(ber_socket_t s) {
 185         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 186
 187         assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
 188         assert( !FD_ISSET( s, &slap_daemon.sd_readers ));
 189         assert( !FD_ISSET( s, &slap_daemon.sd_writers ));
 190
 191 #ifndef HAVE_WINSOCK
 192         if (s >= slap_daemon.sd_nfds) {
 193                 slap_daemon.sd_nfds = s + 1;
 194         }
 195 #endif
 196
 197         slap_daemon.sd_nactives++;
 198
 199         FD_SET( s, &slap_daemon.sd_actives );
 200         FD_SET( s, &slap_daemon.sd_readers );
 201
 202 #ifdef NEW_LOGGING
 203         LDAP_LOG( CONNECTION, DETAIL1,
 204                 "slapd_add: added %ld%s%s\n", (long)s,
 205                 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 206                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 207 #else
 208         Debug( LDAP_DEBUG_CONNS, "daemon: added %ld%s%s\n",
 209                 (long) s,
 210             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 211                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 212 #endif
 213         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 214 }
 215
 216 /*
 217  * Remove the descriptor from daemon control
 218  */
 219 void slapd_remove(ber_socket_t s, int wake) {
 220         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 221
 222         slap_daemon.sd_nactives--;
 223
 224 #ifdef NEW_LOGGING
 225         LDAP_LOG( CONNECTION, DETAIL1,
 226                 "slapd_remove: removing %ld%s%s\n", (long) s,
 227                 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 228                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : ""  );
 229 #else
 230         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 231                 (long) s,
 232             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 233                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 234 #endif
 235         FD_CLR( s, &slap_daemon.sd_actives );
 236         FD_CLR( s, &slap_daemon.sd_readers );
 237         FD_CLR( s, &slap_daemon.sd_writers );
 238
 239         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 240         WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
 241 }
 242
 243 void slapd_clr_write(ber_socket_t s, int wake) {
 244         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 245
 246         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 247         FD_CLR( s, &slap_daemon.sd_writers );
 248
 249         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 250         WAKE_LISTENER(wake);
 251 }
 252
 253 void slapd_set_write(ber_socket_t s, int wake) {
 254         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 255
 256         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 257         if (!FD_ISSET(s, &slap_daemon.sd_writers))
 258             FD_SET( (unsigned) s, &slap_daemon.sd_writers );
 259
 260         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 261         WAKE_LISTENER(wake);
 262 }
 263
 264 void slapd_clr_read(ber_socket_t s, int wake) {
 265         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 266
 267         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 268         FD_CLR( s, &slap_daemon.sd_readers );
 269
 270         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 271         WAKE_LISTENER(wake);
 272 }
 273
 274 void slapd_set_read(ber_socket_t s, int wake) {
 275         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 276
 277         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 278         if (!FD_ISSET(s, &slap_daemon.sd_readers))
 279             FD_SET( s, &slap_daemon.sd_readers );
 280
 281         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 282         WAKE_LISTENER(wake);
 283 }
 284
 285 static void slapd_close(ber_socket_t s) {
 286 #ifdef NEW_LOGGING
 287         LDAP_LOG( CONNECTION, DETAIL1, "slapd_close: closing %ld\n", (long)s, 0, 0);
 288 #else
 289         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 290                 (long) s, 0, 0 );
 291 #endif
 292         tcp_close(s);
 293 }
 294
 295 static void slap_free_listener_addresses(struct sockaddr **sal)
 296 {
 297         struct sockaddr **sap;
 298
 299         if (sal == NULL) {
 300                 return;
 301         }
 302
 303         for (sap = sal; *sap != NULL; sap++) {
 304                 ch_free(*sap);
 305         }
 306
 307         ch_free(sal);
 308 }
 309
 310 #ifdef LDAP_PF_LOCAL
 311 static int get_url_perms(
 312         char    **exts,
 313         mode_t  *perms,
 314         int     *crit )
 315 {
 316         int     i;
 317
 318         assert( exts );
 319         assert( perms );
 320         assert( crit );
 321
 322         *crit = 0;
 323         for ( i = 0; exts[ i ]; i++ ) {
 324                 char    *type = exts[ i ];
 325                 int     c = 0;
 326
 327                 if ( type[ 0 ] == '!' ) {
 328                         c = 1;
 329                         type++;
 330                 }
 331
 332                 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=", sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 ) {
 333                         char    *value = type + sizeof(LDAPI_MOD_URLEXT "=") - 1;
 334                         mode_t  p = 0;
 335                         int     j;
 336
 337                         if ( strlen(value) != 3 ) {
 338                                 return LDAP_OTHER;
 339                         }
 340
 341                         for ( j = 0; j < 3; j++ ) {
 342                                 static mode_t   m[ 3 ]
 343                                         = { S_IRWXU, S_IRWXG, S_IRWXO };
 344
 345                                 switch ( value[ j ] ) {
 346                                 case 'w':
 347                                         p |= m[ j ];
 348                                         break;
 349                                 case '-':
 350                                         break;
 351                                 default:
 352                                         return LDAP_OTHER;
 353                                 }
 354                         }
 355
 356                         *crit = c;
 357                         *perms = p;
 358
 359                         return LDAP_SUCCESS;
 360                 }
 361         }
 362
 363         return LDAP_OTHER;
 364 }
 365 #endif /* LDAP_PF_LOCAL */
 366
 367 /* port = 0 indicates AF_LOCAL */
 368 static int slap_get_listener_addresses(
 369         const char *host,
 370         unsigned short port,
 371         struct sockaddr ***sal)
 372 {
 373         struct sockaddr **sap;
 374
 375 #ifdef LDAP_PF_LOCAL
 376         if ( port == 0 ) {
 377                 *sal = ch_malloc(2 * sizeof(void *));
 378                 if (*sal == NULL) {
 379                         return -1;
 380                 }
 381
 382                 sap = *sal;
 383                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 384                 if (*sap == NULL)
 385                         goto errexit;
 386                 sap[1] = NULL;
 387
 388                 if ( strlen(host) >
 389                      (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 390 #ifdef NEW_LOGGING
 391                         LDAP_LOG( CONNECTION, INFO,
 392                                 "slap_get_listener_addresses: domain socket path (%s) "
 393                                 "too long in URL\n", host, 0, 0 );
 394 #else
 395                         Debug( LDAP_DEBUG_ANY,
 396                                "daemon: domain socket path (%s) too long in URL",
 397                                host, 0, 0);
 398 #endif
 399                         goto errexit;
 400                 }
 401
 402                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 403                 (*sap)->sa_family = AF_LOCAL;
 404                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 405         } else
 406 #endif
 407         {
 408 #ifdef HAVE_GETADDRINFO
 409                 struct addrinfo hints, *res, *sai;
 410                 int n, err;
 411                 char serv[7];
 412
 413                 memset( &hints, '\0', sizeof(hints) );
 414                 hints.ai_flags = AI_PASSIVE;
 415                 hints.ai_socktype = SOCK_STREAM;
 416                 hints.ai_family = slap_inet4or6;
 417                 snprintf(serv, sizeof serv, "%d", port);
 418
 419                 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
 420 #ifdef NEW_LOGGING
 421                         LDAP_LOG( CONNECTION, INFO,
 422                                    "slap_get_listener_addresses: getaddrinfo failed: %s\n",
 423                                    AC_GAI_STRERROR(err), 0, 0 );
 424 #else
 425                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 426                                 AC_GAI_STRERROR(err), 0, 0);
 427 #endif
 428                         return -1;
 429                 }
 430
 431                 sai = res;
 432                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
 433                         /* EMPTY */ ;
 434                 }
 435                 *sal = ch_calloc(n, sizeof(void *));
 436                 if (*sal == NULL) {
 437                         return -1;
 438                 }
 439
 440                 sap = *sal;
 441                 *sap = NULL;
 442
 443                 for ( sai=res; sai; sai=sai->ai_next ) {
 444                         if( sai->ai_addr == NULL ) {
 445 #ifdef NEW_LOGGING
 446                                 LDAP_LOG( CONNECTION, INFO,
 447                                         "slap_get_listener_addresses: "
 448                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 449 #else
 450                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
 451                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 452 #endif
 453                                 freeaddrinfo(res);
 454                                 goto errexit;
 455                         }
 456
 457                         switch (sai->ai_family) {
 458 #  ifdef LDAP_PF_INET6
 459                         case AF_INET6:
 460                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 461                                 if (*sap == NULL) {
 462                                         freeaddrinfo(res);
 463                                         goto errexit;
 464                                 }
 465                                 *(struct sockaddr_in6 *)*sap =
 466                                         *((struct sockaddr_in6 *)sai->ai_addr);
 467                                 break;
 468 #  endif
 469                         case AF_INET:
 470                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 471                                 if (*sap == NULL) {
 472                                         freeaddrinfo(res);
 473                                         goto errexit;
 474                                 }
 475                                 *(struct sockaddr_in *)*sap =
 476                                         *((struct sockaddr_in *)sai->ai_addr);
 477                                 break;
 478                         default:
 479                                 *sap = NULL;
 480                                 break;
 481                         }
 482
 483                         if (*sap != NULL) {
 484                                 (*sap)->sa_family = sai->ai_family;
 485                                 sap++;
 486                                 *sap = NULL;
 487                         }
 488                 }
 489
 490                 freeaddrinfo(res);
 491 #else
 492                 int i, n = 1;
 493                 struct in_addr in;
 494                 struct hostent *he = NULL;
 495
 496                 if ( host == NULL ) {
 497                         in.s_addr = htonl(INADDR_ANY);
 498
 499                 } else if ( !inet_aton( host, &in ) ) {
 500                         he = gethostbyname( host );
 501                         if( he == NULL ) {
 502 #ifdef NEW_LOGGING
 503                                 LDAP_LOG( CONNECTION, INFO,
 504                                         "slap_get_listener_addresses: invalid host %s\n", host, 0, 0 );
 505 #else
 506                                 Debug( LDAP_DEBUG_ANY,
 507                                        "daemon: invalid host %s", host, 0, 0);
 508 #endif
 509                                 return -1;
 510                         }
 511                         for (n = 0; he->h_addr_list[n]; n++) ;
 512                 }
 513
 514                 *sal = ch_malloc((n+1) * sizeof(void *));
 515                 if (*sal == NULL) {
 516                         return -1;
 517                 }
 518
 519                 sap = *sal;
 520                 for ( i = 0; i<n; i++ ) {
 521                         sap[i] = ch_malloc(sizeof(struct sockaddr_in));
 522                         if (*sap == NULL) {
 523                                 goto errexit;
 524                         }
 525                         (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
 526                         sap[i]->sa_family = AF_INET;
 527                         ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
 528                         if (he) {
 529                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, he->h_addr_list[i], sizeof(struct in_addr) );
 530                         } else {
 531                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, &in, sizeof(struct in_addr) );
 532                         }
 533                 }
 534                 sap[i] = NULL;
 535 #endif
 536         }
 537
 538         return 0;
 539
 540 errexit:
 541         slap_free_listener_addresses(*sal);
 542         return -1;
 543 }
 544
 545 static int slap_open_listener(
 546         const char* url,
 547         int *listeners,
 548         int *cur
 549         )
 550 {
 551         int     num, tmp, rc;
 552         Listener l;
 553         Listener *li;
 554         LDAPURLDesc *lud;
 555         unsigned short port;
 556         int err, addrlen = 0;
 557         struct sockaddr **sal, **psal;
 558         int socktype = SOCK_STREAM;     /* default to COTS */
 559
 560 #ifdef LDAP_PF_LOCAL
 561         mode_t  perms = S_IRWXU;
 562         int     crit = 1;
 563 #endif
 564
 565         rc = ldap_url_parse( url, &lud );
 566
 567         if( rc != LDAP_URL_SUCCESS ) {
 568 #ifdef NEW_LOGGING
 569                 LDAP_LOG( CONNECTION, ERR,
 570                         "slap_open_listener: listen URL \"%s\" parse error %d\n",
 571                         url, rc , 0 );
 572 #else
 573                 Debug( LDAP_DEBUG_ANY,
 574                         "daemon: listen URL \"%s\" parse error=%d\n",
 575                         url, rc, 0 );
 576 #endif
 577                 return rc;
 578         }
 579
 580 #ifndef HAVE_TLS
 581         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 582 #ifdef NEW_LOGGING
 583                 LDAP_LOG( CONNECTION, INFO,
 584                            "slap_open_listener: TLS is not supported (%s)\n", url, 0, 0 );
 585 #else
 586                 Debug( LDAP_DEBUG_ANY,
 587                         "daemon: TLS not supported (%s)\n",
 588                         url, 0, 0 );
 589 #endif
 590                 ldap_free_urldesc( lud );
 591                 return -1;
 592         }
 593
 594         if(! lud->lud_port ) {
 595                 lud->lud_port = LDAP_PORT;
 596         }
 597
 598 #else
 599         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 600
 601         if(! lud->lud_port ) {
 602                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 603         }
 604 #endif
 605
 606         port = (unsigned short) lud->lud_port;
 607
 608         tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
 609         if ( tmp == LDAP_PROTO_IPC ) {
 610 #ifdef LDAP_PF_LOCAL
 611                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 612                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 613                 } else {
 614                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 615                 }
 616
 617                 if ( lud->lud_exts ) {
 618                         err = get_url_perms( lud->lud_exts, &perms, &crit );
 619                 }
 620 #else
 621
 622 #ifdef NEW_LOGGING
 623                 LDAP_LOG( CONNECTION, INFO,
 624                         "slap_open_listener: URL scheme is not supported: %s\n", url, 0, 0 );
 625 #else
 626                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 627                         url, 0, 0);
 628 #endif
 629                 ldap_free_urldesc( lud );
 630                 return -1;
 631 #endif
 632         } else {
 633 #ifdef LDAP_CONNECTIONLESS
 634                 l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
 635 #endif
 636                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 637                         || strcmp(lud->lud_host, "*") == 0 )
 638                 {
 639                         err = slap_get_listener_addresses(NULL, port, &sal);
 640                 } else {
 641                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 642                 }
 643         }
 644
 645         ldap_free_urldesc( lud );
 646         if ( err ) {
 647                 return -1;
 648         }
 649
 650         /* If we got more than one address returned, we need to make space
 651          * for it in the slap_listeners array.
 652          */
 653         for ( num=0; sal[num]; num++ );
 654         if ( num > 1 ) {
 655                 *listeners += num-1;
 656                 slap_listeners = ch_realloc( slap_listeners, (*listeners + 1) * sizeof(Listener *) );
 657         }
 658
 659         psal = sal;
 660         while ( *sal != NULL ) {
 661                 switch( (*sal)->sa_family ) {
 662                 case AF_INET:
 663 #ifdef LDAP_PF_INET6
 664                 case AF_INET6:
 665 #endif
 666 #ifdef LDAP_PF_LOCAL
 667                 case AF_LOCAL:
 668 #endif
 669                         break;
 670                 default:
 671                         sal++;
 672                         continue;
 673                 }
 674 #ifdef LDAP_CONNECTIONLESS
 675                 if (l.sl_is_udp)
 676                     socktype = SOCK_DGRAM;
 677 #endif
 678                 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
 679                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 680                         int err = sock_errno();
 681 #ifdef NEW_LOGGING
 682                         LDAP_LOG( CONNECTION, ERR,
 683                                 "slap_open_listener: socket() failed errno=%d (%s)\n",
 684                                 err, sock_errstr(err), 0 );
 685 #else
 686                         Debug( LDAP_DEBUG_ANY,
 687                                 "daemon: socket() failed errno=%d (%s)\n", err,
 688                                 sock_errstr(err), 0 );
 689 #endif
 690                         sal++;
 691                         continue;
 692                 }
 693 #ifndef HAVE_WINSOCK
 694                 if ( l.sl_sd >= dtblsize ) {
 695 #ifdef NEW_LOGGING
 696                         LDAP_LOG( CONNECTION, ERR,
 697                                 "slap_open_listener: listener descriptor %ld is too "
 698                                 "great %ld\n", (long)l.sl_sd, (long)dtblsize, 0 );
 699 #else
 700                         Debug( LDAP_DEBUG_ANY,
 701                                "daemon: listener descriptor %ld is too great %ld\n",
 702                                (long) l.sl_sd, (long) dtblsize, 0 );
 703 #endif
 704                         tcp_close( l.sl_sd );
 705                         sal++;
 706                         continue;
 707                 }
 708 #endif
 709 #ifdef LDAP_PF_LOCAL
 710                 if ( (*sal)->sa_family == AF_LOCAL ) {
 711                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 712                 } else
 713 #endif
 714                 {
 715 #ifdef SO_REUSEADDR
 716                         /* enable address reuse */
 717                         tmp = 1;
 718                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 719                                          (char *) &tmp, sizeof(tmp) );
 720                         if ( rc == AC_SOCKET_ERROR ) {
 721                                 int err = sock_errno();
 722 #ifdef NEW_LOGGING
 723                                 LDAP_LOG( CONNECTION, INFO,
 724                                         "slap_open_listener: setsockopt( %ld, SO_REUSEADDR ) "
 725                                         "failed errno %d (%s)\n", (long)l.sl_sd, err,
 726                                         sock_errstr(err) );
 727 #else
 728                                 Debug( LDAP_DEBUG_ANY,
 729                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 730                                        (long) l.sl_sd, err, sock_errstr(err) );
 731 #endif
 732                         }
 733 #endif
 734                 }
 735
 736                 switch( (*sal)->sa_family ) {
 737                 case AF_INET:
 738                         addrlen = sizeof(struct sockaddr_in);
 739                         break;
 740 #ifdef LDAP_PF_INET6
 741                 case AF_INET6:
 742 #ifdef IPV6_V6ONLY
 743                         /* Try to use IPv6 sockets for IPv6 only */
 744                         tmp = 1;
 745                         rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
 746                                          (char *) &tmp, sizeof(tmp) );
 747                         if ( rc == AC_SOCKET_ERROR ) {
 748                                 int err = sock_errno();
 749 #ifdef NEW_LOGGING
 750                                 LDAP_LOG( CONNECTION, INFO,
 751                                            "slap_open_listener: setsockopt( %ld, IPV6_V6ONLY ) failed errno %d (%s)\n",
 752                                            (long)l.sl_sd, err, sock_errstr(err) );
 753 #else
 754                                 Debug( LDAP_DEBUG_ANY,
 755                                        "slapd(%ld): setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
 756                                        (long) l.sl_sd, err, sock_errstr(err) );
 757 #endif
 758                         }
 759 #endif
 760                         addrlen = sizeof(struct sockaddr_in6);
 761                         break;
 762 #endif
 763 #ifdef LDAP_PF_LOCAL
 764                 case AF_LOCAL:
 765                         addrlen = sizeof(struct sockaddr_un);
 766                         break;
 767 #endif
 768                 }
 769
 770                 if (bind(l.sl_sd, *sal, addrlen)) {
 771                         err = sock_errno();
 772 #ifdef NEW_LOGGING
 773                 LDAP_LOG( CONNECTION, INFO,
 774                         "slap_open_listener: bind(%ld) failed errno=%d (%s)\n",
 775                         (long)l.sl_sd, err, sock_errstr(err) );
 776 #else
 777                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 778                        (long) l.sl_sd, err, sock_errstr(err) );
 779 #endif
 780                         tcp_close( l.sl_sd );
 781                         sal++;
 782                         continue;
 783                 }
 784
 785         switch ( (*sal)->sa_family ) {
 786 #ifdef LDAP_PF_LOCAL
 787         case AF_LOCAL: {
 788                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 789                 if ( chmod( addr, perms ) < 0 && crit ) {
 790                         int err = sock_errno();
 791 #ifdef NEW_LOGGING
 792                         LDAP_LOG( CONNECTION, INFO,
 793                                 "slap_open_listener: fchmod(%ld) failed errno=%d (%s)\n",
 794                                 (long)l.sl_sd, err, sock_errstr(err) );
 795 #else
 796                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 797                                (long) l.sl_sd, err, sock_errstr(err) );
 798 #endif
 799                         tcp_close( l.sl_sd );
 800                         slap_free_listener_addresses(psal);
 801                         return -1;
 802                 }
 803                 l.sl_name = ch_malloc( strlen(addr) + sizeof("PATH=") );
 804                 sprintf( l.sl_name, "PATH=%s", addr );
 805         } break;
 806 #endif /* LDAP_PF_LOCAL */
 807
 808         case AF_INET: {
 809                 char *s;
 810 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
 811                 char addr[INET_ADDRSTRLEN];
 812                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
 813                            addr, sizeof(addr) );
 814                 s = addr;
 815 #else
 816                 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
 817 #endif
 818                 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
 819                 l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65535") );
 820                 sprintf( l.sl_name, "IP=%s:%d",
 821                          s != NULL ? s : "unknown" , port );
 822         } break;
 823
 824 #ifdef LDAP_PF_INET6
 825         case AF_INET6: {
 826                 char addr[INET6_ADDRSTRLEN];
 827                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
 828                            addr, sizeof addr);
 829                 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
 830                 l.sl_name = ch_malloc( strlen(addr) + sizeof("IP= 65535") );
 831                 sprintf( l.sl_name, "IP=%s %d", addr, port );
 832         } break;
 833 #endif /* LDAP_PF_INET6 */
 834
 835         default:
 836 #ifdef NEW_LOGGING
 837                 LDAP_LOG( CONNECTION, INFO,
 838                         "slap_open_listener: unsupported address family (%d)\n",
 839                         (int)(*sal)->sa_family, 0, 0 );
 840 #else
 841                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 842                         (int) (*sal)->sa_family, 0, 0 );
 843 #endif
 844                 break;
 845         }
 846
 847         AC_MEMCPY(&l.sl_sa, *sal, addrlen);
 848         l.sl_url = ch_strdup( url );
 849         li = ch_malloc( sizeof( Listener ) );
 850         *li = l;
 851         slap_listeners[*cur] = li;
 852         (*cur)++;
 853         sal++;
 854
 855         } /* while ( *sal != NULL ) */
 856
 857         slap_free_listener_addresses(psal);
 858
 859
 860 #ifdef NEW_LOGGING
 861         LDAP_LOG( CONNECTION, RESULTS,
 862                         "slap_open_listener: daemon initialzed %s\n", l.sl_url, 0, 0 );
 863 #else
 864         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 865                 l.sl_url, 0, 0 );
 866 #endif
 867         return 0;
 868 }
 869
 870 static int sockinit(void);
 871 static int sockdestroy(void);
 872
 873 int slapd_daemon_init( const char *urls )
 874 {
 875         int i, j, n, rc;
 876         char **u;
 877
 878 #ifdef NEW_LOGGING
 879         LDAP_LOG( CONNECTION, ARGS,
 880                 "slapd_daemon_init: %s\n", urls ? urls : "<null>", 0, 0 );
 881 #else
 882         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 883                 urls ? urls : "<null>", 0, 0 );
 884 #endif
 885         if( (rc = sockinit()) != 0 ) {
 886                 return rc;
 887         }
 888
 889 #ifdef HAVE_SYSCONF
 890         dtblsize = sysconf( _SC_OPEN_MAX );
 891 #elif HAVE_GETDTABLESIZE
 892         dtblsize = getdtablesize();
 893 #else
 894         dtblsize = FD_SETSIZE;
 895 #endif
 896
 897 #ifdef FD_SETSIZE
 898         if(dtblsize > FD_SETSIZE) {
 899                 dtblsize = FD_SETSIZE;
 900         }
 901 #endif  /* !FD_SETSIZE */
 902
 903         /* open a pipe (or something equivalent connected to itself).
 904          * we write a byte on this fd whenever we catch a signal. The main
 905          * loop will be select'ing on this socket, and will wake up when
 906          * this byte arrives.
 907          */
 908         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 909 #ifdef NEW_LOGGING
 910                 LDAP_LOG( CONNECTION, ERR,
 911                         "slap_daemon_init: lutil_pair() failed rc=%d\n", rc, 0, 0);
 912 #else
 913                 Debug( LDAP_DEBUG_ANY,
 914                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 915 #endif
 916                 return rc;
 917         }
 918
 919         FD_ZERO( &slap_daemon.sd_readers );
 920         FD_ZERO( &slap_daemon.sd_writers );
 921
 922         if( urls == NULL ) {
 923                 urls = "ldap:///";
 924         }
 925
 926         u = str2charray( urls, " " );
 927
 928         if( u == NULL || u[0] == NULL ) {
 929 #ifdef NEW_LOGGING
 930                 LDAP_LOG( CONNECTION, ERR,
 931                         "slap_daemon_init: no urls (%s) provided.\n", urls, 0, 0 );
 932 #else
 933                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
 934                         urls, 0, 0 );
 935 #endif
 936                 return -1;
 937         }
 938
 939         for( i=0; u[i] != NULL; i++ ) {
 940 #ifdef NEW_LOGGING
 941                 LDAP_LOG( CONNECTION, DETAIL1,
 942                         "slap_daemon_init: listen on %s\n.", u[i], 0, 0 );
 943 #else
 944                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
 945                         u[i], 0, 0 );
 946 #endif
 947         }
 948
 949         if( i == 0 ) {
 950 #ifdef NEW_LOGGING
 951                 LDAP_LOG( CONNECTION, INFO,
 952                          "slap_daemon_init: no listeners to open (%s)\n", urls, 0, 0 );
 953 #else
 954                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
 955                         urls, 0, 0 );
 956 #endif
 957                 charray_free( u );
 958                 return -1;
 959         }
 960
 961 #ifdef NEW_LOGGING
 962         LDAP_LOG( CONNECTION, INFO,
 963                 "slap_daemon_init: %d listeners to open...\n", i, 0, 0 );
 964 #else
 965         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
 966                 i, 0, 0 );
 967 #endif
 968         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
 969
 970         for(n = 0, j = 0; u[n]; n++ ) {
 971                 if ( slap_open_listener( u[n], &i, &j ) ) {
 972                         charray_free( u );
 973                         return -1;
 974                 }
 975         }
 976         slap_listeners[j] = NULL;
 977
 978 #ifdef NEW_LOGGING
 979         LDAP_LOG( CONNECTION, DETAIL1,
 980                 "slap_daemon_init: %d listeners opened\n", i, 0, 0 );
 981 #else
 982         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
 983                 i, 0, 0 );
 984 #endif
 985
 986 #ifdef HAVE_SLP
 987         slapd_slp_init( urls );
 988         slapd_slp_reg();
 989 #endif
 990
 991         charray_free( u );
 992         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
 993         return !i;
 994 }
 995
 996
 997 int
 998 slapd_daemon_destroy(void)
 999 {
1000         connections_destroy();
1001         tcp_close( wake_sds[1] );
1002         tcp_close( wake_sds[0] );
1003         sockdestroy();
1004
1005 #ifdef HAVE_SLP
1006         slapd_slp_dereg();
1007         slapd_slp_deinit();
1008 #endif
1009
1010         return 0;
1011 }
1012
1013
1014 static void
1015 close_listeners(
1016         int remove
1017 )
1018 {
1019         int l;
1020
1021         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1022                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1023                         if ( remove )
1024                                 slapd_remove( slap_listeners[l]->sl_sd, 0 );
1025 #ifdef LDAP_PF_LOCAL
1026                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1027                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1028                         }
1029 #endif /* LDAP_PF_LOCAL */
1030                         slapd_close( slap_listeners[l]->sl_sd );
1031                 }
1032                 if ( slap_listeners[l]->sl_url )
1033                         free ( slap_listeners[l]->sl_url );
1034                 if ( slap_listeners[l]->sl_name )
1035                         free ( slap_listeners[l]->sl_name );
1036                 free ( slap_listeners[l] );
1037                 slap_listeners[l] = NULL;
1038         }
1039 }
1040
1041
1042 static void *
1043 slapd_daemon_task(
1044         void *ptr
1045 )
1046 {
1047         int l;
1048         time_t  last_idle_check = 0;
1049         time( &starttime );
1050
1051         if ( global_idletimeout > 0 ) {
1052                 last_idle_check = slap_get_time();
1053         }
1054         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1055                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1056                         continue;
1057 #ifdef LDAP_CONNECTIONLESS
1058                 /* Since this is connectionless, the data port is the
1059                  * listening port. The listen() and accept() calls
1060                  * are unnecessary.
1061                  */
1062                 if ( slap_listeners[l]->sl_is_udp )
1063                 {
1064                         slapd_add( slap_listeners[l]->sl_sd );
1065                         continue;
1066                 }
1067 #endif
1068
1069                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
1070                         int err = sock_errno();
1071
1072 #ifdef LDAP_PF_INET6
1073                         /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1074                          * we are already listening to in6addr_any, then we want to ignore
1075                          * this and continue.
1076                          */
1077                         if ( err == EADDRINUSE ) {
1078                                 int i;
1079                                 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1080                                 struct sockaddr_in6 sa6;
1081
1082                                 if ( sa.sin_family == AF_INET &&
1083                                      sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1084                                         for ( i = 0 ; i < l; i++ ) {
1085                                                 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1086                                                 if ( sa6.sin6_family == AF_INET6 &&
1087                                                      !memcmp( &sa6.sin6_addr, &in6addr_any, sizeof(struct in6_addr) ) )
1088                                                         break;
1089                                         }
1090
1091                                         if ( i < l ) {
1092                                                 /* We are already listening to in6addr_any */
1093 #ifdef NEW_LOGGING
1094                                                 LDAP_LOG(CONNECTION, WARNING,
1095                                                            "slapd_daemon_task: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n", 0, 0, 0 );
1096 #else
1097                                                 Debug( LDAP_DEBUG_CONNS,
1098                                                        "daemon: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n",
1099                                                        0, 0, 0 );
1100 #endif
1101                                                 slapd_close( slap_listeners[l]->sl_sd );
1102                                                 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1103                                                 continue;
1104                                         }
1105                                 }
1106                         }
1107 #endif
1108 #ifdef NEW_LOGGING
1109                         LDAP_LOG( CONNECTION, ERR,
1110                                 "slapd_daemon_task: listen( %s, 5 ) failed errno=%d (%s)\n",
1111                                 slap_listeners[l]->sl_url, err, sock_errstr(err) );
1112 #else
1113                         Debug( LDAP_DEBUG_ANY,
1114                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1115                                         slap_listeners[l]->sl_url, err,
1116                                         sock_errstr(err) );
1117 #endif
1118                         return( (void*)-1 );
1119                 }
1120
1121                 slapd_add( slap_listeners[l]->sl_sd );
1122         }
1123
1124 #ifdef HAVE_NT_SERVICE_MANAGER
1125         if ( started_event != NULL ) {
1126                 ldap_pvt_thread_cond_signal( &started_event );
1127         }
1128 #endif
1129         /* initialization complete. Here comes the loop. */
1130
1131         while ( !slapd_shutdown ) {
1132                 ber_socket_t i;
1133                 int ns;
1134                 int at;
1135                 ber_socket_t nfds;
1136 #define SLAPD_EBADF_LIMIT 16
1137                 int ebadf = 0;
1138                 int emfile = 0;
1139
1140 #define SLAPD_IDLE_CHECK_LIMIT 4
1141                 time_t  now;
1142
1143
1144                 fd_set                  readfds;
1145                 fd_set                  writefds;
1146                 Sockaddr                from;
1147
1148 #if defined(SLAPD_RLOOKUPS)
1149                 struct hostent          *hp;
1150 #endif
1151                 struct timeval          zero;
1152                 struct timeval          *tvp;
1153
1154                 if( emfile ) {
1155                         now = slap_get_time();
1156                         connections_timeout_idle( now );
1157                 }
1158                 else if ( global_idletimeout > 0 ) {
1159                         now = slap_get_time();
1160                         if ( difftime( last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1161                                 connections_timeout_idle( now );
1162                         }
1163                 }
1164
1165 #ifdef SIGHUP
1166                 if( slapd_gentle_shutdown ) {
1167                         ber_socket_t active;
1168
1169                         if( slapd_gentle_shutdown == 1 ) {
1170                                 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1171                                 close_listeners( 1 );
1172                                 global_restrictops |= SLAP_RESTRICT_OP_WRITES;
1173                                 slapd_gentle_shutdown = 2;
1174                         }
1175
1176                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1177                         active = slap_daemon.sd_nactives;
1178                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1179                         if( active == 0 ) {
1180                                 slapd_shutdown = 2;
1181                                 break;
1182                         }
1183                 }
1184 #endif
1185
1186                 FD_ZERO( &writefds );
1187                 FD_ZERO( &readfds );
1188
1189                 zero.tv_sec = 0;
1190                 zero.tv_usec = 0;
1191
1192                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1193
1194 #ifdef FD_SET_MANUAL_COPY
1195                 for( s = 0; s < nfds; s++ ) {
1196                         if(FD_ISSET( &slap_sd_readers, s )) {
1197                                 FD_SET( s, &readfds );
1198                         }
1199                         if(FD_ISSET( &slap_sd_writers, s )) {
1200                                 FD_SET( s, &writefds );
1201                         }
1202                 }
1203 #else
1204                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
1205                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
1206 #endif
1207                 assert(!FD_ISSET(wake_sds[0], &readfds));
1208                 FD_SET( wake_sds[0], &readfds );
1209
1210                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1211                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1212                                 continue;
1213                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
1214                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
1215                 }
1216
1217 #ifndef HAVE_WINSOCK
1218                 nfds = slap_daemon.sd_nfds;
1219 #else
1220                 nfds = dtblsize;
1221 #endif
1222
1223                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1224
1225                 at = ldap_pvt_thread_pool_backload(&connection_pool);
1226
1227 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
1228                 tvp = NULL;
1229 #else
1230                 tvp = at ? &zero : NULL;
1231 #endif
1232
1233                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1234                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1235                                 continue;
1236
1237 #ifdef NEW_LOGGING
1238                         LDAP_LOG( CONNECTION, DETAIL1,
1239                                 "slapd_daemon_task: select: listen=%d "
1240                                 "active_threads=%d tvp=%s\n",
1241                                 slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
1242 #else
1243                         Debug( LDAP_DEBUG_CONNS,
1244                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1245                                         slap_listeners[l]->sl_sd, at,
1246                                         tvp == NULL ? "NULL" : "zero" );
1247 #endif
1248                 }
1249
1250                 switch(ns = select( nfds, &readfds,
1251 #ifdef HAVE_WINSOCK
1252                         /* don't pass empty fd_set */
1253                         ( writefds.fd_count > 0 ? &writefds : NULL ),
1254 #else
1255                         &writefds,
1256 #endif
1257                         NULL, tvp ))
1258                 {
1259                 case -1: {      /* failure - try again */
1260                                 int err = sock_errno();
1261
1262                                 if( err == EBADF
1263 #ifdef WSAENOTSOCK
1264                                         /* you'd think this would be EBADF */
1265                                         || err == WSAENOTSOCK
1266 #endif
1267                                 ) {
1268                                         if (++ebadf < SLAPD_EBADF_LIMIT)
1269                                                 continue;
1270                                 }
1271
1272                                 if( err != EINTR ) {
1273 #ifdef NEW_LOGGING
1274                                         LDAP_LOG( CONNECTION, INFO,
1275                                                 "slapd_daemon_task: select failed (%d): %s\n",
1276                                                 err, sock_errstr(err), 0 );
1277 #else
1278                                         Debug( LDAP_DEBUG_CONNS,
1279                                                 "daemon: select failed (%d): %s\n",
1280                                                 err, sock_errstr(err), 0 );
1281 #endif
1282                                         slapd_shutdown = 2;
1283                                 }
1284                         }
1285                         continue;
1286
1287                 case 0:         /* timeout - let threads run */
1288                         ebadf = 0;
1289 #ifdef NEW_LOGGING
1290                         LDAP_LOG( CONNECTION, DETAIL2,
1291                                    "slapd_daemon_task: select timeout - yielding\n", 0, 0, 0 );
1292 #else
1293                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1294                             0, 0, 0 );
1295 #endif
1296                         ldap_pvt_thread_yield();
1297                         continue;
1298
1299                 default:        /* something happened - deal with it */
1300                         if( slapd_shutdown ) continue;
1301
1302                         ebadf = 0;
1303 #ifdef NEW_LOGGING
1304                         LDAP_LOG( CONNECTION, DETAIL2,
1305                                    "slapd_daemon_task: activity on %d descriptors\n", ns, 0, 0 );
1306 #else
1307                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
1308                                 ns, 0, 0 );
1309 #endif
1310                         /* FALL THRU */
1311                 }
1312
1313                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
1314                         char c[BUFSIZ];
1315                         tcp_read( wake_sds[0], c, sizeof(c) );
1316 #ifdef NO_THREADS
1317                         waking = 0;
1318 #endif
1319                         continue;
1320                 }
1321
1322                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1323                         ber_socket_t s;
1324                         socklen_t len = sizeof(from);
1325                         long id;
1326                         slap_ssf_t ssf = 0;
1327                         char *authid = NULL;
1328
1329                         char    *dnsname = NULL;
1330                         char    *peeraddr;
1331 #ifdef LDAP_PF_LOCAL
1332                         char    peername[MAXPATHLEN + sizeof("PATH=")];
1333 #elif defined(LDAP_PF_INET6)
1334                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1335 #else
1336                         char    peername[sizeof("IP=255.255.255.255:65336")];
1337 #endif /* LDAP_PF_LOCAL */
1338
1339                         peername[0] = '\0';
1340
1341                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1342                                 continue;
1343
1344                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
1345                                 continue;
1346
1347 #ifdef LDAP_CONNECTIONLESS
1348                         if ( slap_listeners[l]->sl_is_udp )
1349                         {
1350                         /* The first time we receive a query, we set this
1351                          * up as a "connection". It remains open for the life
1352                          * of the slapd.
1353                          */
1354                                 if ( slap_listeners[l]->sl_is_udp < 2 )
1355                                 {
1356                                     id = connection_init(
1357                                         slap_listeners[l]->sl_sd,
1358                                         slap_listeners[l]->sl_url, "", "",
1359                                         slap_listeners[l]->sl_name,
1360                                         2, ssf, authid );
1361                                     slap_listeners[l]->sl_is_udp++;
1362                                 }
1363                                 continue;
1364                         }
1365 #endif
1366
1367                         s = accept( slap_listeners[l]->sl_sd,
1368                                 (struct sockaddr *) &from, &len );
1369                         if ( s == AC_SOCKET_INVALID ) {
1370                                 int err = sock_errno();
1371
1372 #ifdef EMFILE
1373                                 if( err == EMFILE ) {
1374                                         emfile++;
1375                                 } else
1376 #endif
1377 #ifdef ENFILE
1378                                 if( err == ENFILE ) {
1379                                         emfile++;
1380                                 } else
1381 #endif
1382                                 {
1383                                         emfile=0;
1384                                 }
1385
1386                                 if( emfile < 3 ) {
1387 #ifdef NEW_LOGGING
1388                                         LDAP_LOG( CONNECTION, ERR,
1389                                                 "slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
1390                                                 (long)slap_listeners[l]->sl_sd,
1391                                                 err, sock_errstr(err) );
1392 #else
1393                                         Debug( LDAP_DEBUG_ANY,
1394                                             "daemon: accept(%ld) failed errno=%d (%s)\n",
1395                                             (long) slap_listeners[l]->sl_sd, err,
1396                                             sock_errstr(err) );
1397 #endif
1398                                 } else {
1399                                         /* prevent busy loop */
1400 #  ifdef HAVE_USLEEP
1401                                         if( emfile % 4 == 3 ) usleep( 250 );
1402 #  else
1403                                         if( emfile % 8 == 7 ) sleep( 1 );
1404 #  endif
1405                                 }
1406
1407                                 ldap_pvt_thread_yield();
1408                                 continue;
1409                         }
1410                         emfile = 0;
1411
1412 #ifndef HAVE_WINSOCK
1413                         /* make sure descriptor number isn't too great */
1414                         if ( s >= dtblsize ) {
1415 #ifdef NEW_LOGGING
1416                                 LDAP_LOG( CONNECTION, ERR,
1417                                    "slapd_daemon_task: %ld beyond descriptor table size %ld\n",
1418                                    (long)s, (long)dtblsize, 0 );
1419 #else
1420                                 Debug( LDAP_DEBUG_ANY,
1421                                         "daemon: %ld beyond descriptor table size %ld\n",
1422                                         (long) s, (long) dtblsize, 0 );
1423 #endif
1424
1425                                 slapd_close(s);
1426                                 ldap_pvt_thread_yield();
1427                                 continue;
1428                         }
1429 #endif
1430
1431 #ifdef LDAP_DEBUG
1432                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1433
1434                         /* newly accepted stream should not be in any of the FD SETS */
1435                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
1436                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
1437                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
1438
1439                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1440 #endif
1441
1442 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1443 #ifdef LDAP_PF_LOCAL
1444                         /* for IPv4 and IPv6 sockets only */
1445                         if ( from.sa_addr.sa_family != AF_LOCAL )
1446 #endif /* LDAP_PF_LOCAL */
1447                         {
1448                                 int rc;
1449                                 int tmp;
1450 #ifdef SO_KEEPALIVE
1451                                 /* enable keep alives */
1452                                 tmp = 1;
1453                                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1454                                         (char *) &tmp, sizeof(tmp) );
1455                                 if ( rc == AC_SOCKET_ERROR ) {
1456                                         int err = sock_errno();
1457 #ifdef NEW_LOGGING
1458                                         LDAP_LOG( CONNECTION, ERR,
1459                                                 "slapd_daemon_task: setsockopt( %ld, SO_KEEPALIVE)"
1460                                            " failed errno=%d (%s)\n",
1461                                                 (long)s, err, sock_errstr(err) );
1462 #else
1463                                         Debug( LDAP_DEBUG_ANY,
1464                                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1465                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1466 #endif
1467                                 }
1468 #endif
1469 #ifdef TCP_NODELAY
1470                                 /* enable no delay */
1471                                 tmp = 1;
1472                                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1473                                         (char *)&tmp, sizeof(tmp) );
1474                                 if ( rc == AC_SOCKET_ERROR ) {
1475                                         int err = sock_errno();
1476 #ifdef NEW_LOGGING
1477                                         LDAP_LOG( CONNECTION, ERR,
1478                                                 "slapd_daemon_task: setsockopt( %ld, "
1479                                                 "TCP_NODELAY) failed errno=%d (%s)\n",
1480                                                 (long)s, err, sock_errstr(err) );
1481 #else
1482                                         Debug( LDAP_DEBUG_ANY,
1483                                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1484                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1485 #endif
1486                                 }
1487 #endif
1488                         }
1489 #endif
1490
1491 #ifdef NEW_LOGGING
1492                         LDAP_LOG( CONNECTION, DETAIL1,
1493                                 "slapd_daemon_task: new connection on %ld\n", (long)s, 0, 0 );
1494 #else
1495                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
1496                                 (long) s, 0, 0 );
1497 #endif
1498                         switch ( from.sa_addr.sa_family ) {
1499 #  ifdef LDAP_PF_LOCAL
1500                         case AF_LOCAL:
1501                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1502                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
1503                                 dnsname = "local";
1504                                 break;
1505 #endif /* LDAP_PF_LOCAL */
1506
1507 #  ifdef LDAP_PF_INET6
1508                         case AF_INET6:
1509                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1510                                 peeraddr = inet_ntoa( *((struct in_addr *)
1511                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1512                                 sprintf( peername, "IP=%s:%d",
1513                                          peeraddr != NULL ? peeraddr : "unknown",
1514                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1515                         } else {
1516                                 char addr[INET6_ADDRSTRLEN];
1517
1518                                 peeraddr = (char *) inet_ntop( AF_INET6,
1519                                                       &from.sa_in6_addr.sin6_addr,
1520                                                       addr, sizeof addr );
1521                                 sprintf( peername, "IP=%s %d",
1522                                          peeraddr != NULL ? peeraddr : "unknown",
1523                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1524                         }
1525                         break;
1526 #  endif /* LDAP_PF_INET6 */
1527
1528                         case AF_INET:
1529                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1530                         sprintf( peername, "IP=%s:%d",
1531                                 peeraddr != NULL ? peeraddr : "unknown",
1532                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1533                                 break;
1534
1535                         default:
1536                                 slapd_close(s);
1537                                 continue;
1538                         }
1539
1540                         if ( ( from.sa_addr.sa_family == AF_INET )
1541 #ifdef LDAP_PF_INET6
1542                                 || ( from.sa_addr.sa_family == AF_INET6 )
1543 #endif
1544                         ) {
1545 #ifdef SLAPD_RLOOKUPS
1546                                 if ( use_reverse_lookup ) {
1547 #  ifdef LDAP_PF_INET6
1548                                         if ( from.sa_addr.sa_family == AF_INET6 )
1549                                                 hp = gethostbyaddr(
1550                                                         (char *)&(from.sa_in6_addr.sin6_addr),
1551                                                         sizeof(from.sa_in6_addr.sin6_addr),
1552                                                         AF_INET6 );
1553                                         else
1554 #  endif /* LDAP_PF_INET6 */
1555                                         hp = gethostbyaddr(
1556                                                 (char *) &(from.sa_in_addr.sin_addr),
1557                                                 sizeof(from.sa_in_addr.sin_addr),
1558                                                 AF_INET );
1559                                         dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
1560                                 }
1561 #else
1562                                 dnsname = NULL;
1563 #endif /* SLAPD_RLOOKUPS */
1564
1565 #ifdef HAVE_TCPD
1566                                 if ( !hosts_ctl("slapd",
1567                                                 dnsname != NULL ? dnsname : STRING_UNKNOWN,
1568                                                 peeraddr != NULL ? peeraddr : STRING_UNKNOWN,
1569                                                 STRING_UNKNOWN ))
1570                                 {
1571                                         /* DENY ACCESS */
1572                                         Statslog( LDAP_DEBUG_ANY,
1573                                                 "fd=%ld host access from %s (%s) denied.\n",
1574                                                 (long) s,
1575                                                 dnsname != NULL ? dnsname : "unknown",
1576                                                 peeraddr != NULL ? peeraddr : "unknown",
1577                                                 0, 0 );
1578                                         slapd_close(s);
1579                                         continue;
1580                                 }
1581 #endif /* HAVE_TCPD */
1582                         }
1583
1584                         id = connection_init(s,
1585                                 slap_listeners[l]->sl_url,
1586                                 dnsname != NULL ? dnsname : "unknown",
1587                                 peername,
1588                                 slap_listeners[l]->sl_name,
1589 #ifdef HAVE_TLS
1590                                 slap_listeners[l]->sl_is_tls,
1591 #else
1592                                 0,
1593 #endif
1594                                 ssf,
1595                                 authid );
1596
1597                         if( authid ) ch_free(authid);
1598
1599                         if( id < 0 ) {
1600 #ifdef NEW_LOGGING
1601                                 LDAP_LOG( CONNECTION, INFO,
1602                                         "slapd_daemon_task: connection_init(%ld, %s, %s) failed.\n",
1603                                         (long)s, peername, slap_listeners[l]->sl_name );
1604 #else
1605                                 Debug( LDAP_DEBUG_ANY,
1606                                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1607                                         (long) s,
1608                                         peername,
1609                                         slap_listeners[l]->sl_name );
1610 #endif
1611                                 slapd_close(s);
1612                                 continue;
1613                         }
1614
1615                         Statslog( LDAP_DEBUG_STATS,
1616                                 "daemon: conn=%ld fd=%ld connection from %s (%s) accepted.\n",
1617                                 id, (long) s,
1618                                 peername,
1619                                 slap_listeners[l]->sl_name,
1620                                 0 );
1621
1622                         slapd_add( s );
1623                         continue;
1624                 }
1625
1626 #ifdef LDAP_DEBUG
1627 #ifdef NEW_LOGGING
1628                 LDAP_LOG( CONNECTION, DETAIL2,
1629                            "slapd_daemon_task: activity on ", 0, 0, 0 );
1630 #else
1631                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1632 #endif
1633 #ifdef HAVE_WINSOCK
1634                 for ( i = 0; i < readfds.fd_count; i++ ) {
1635 #ifdef NEW_LOGGING
1636                         LDAP_LOG( CONNECTION, DETAIL2,
1637                                 " %d%s", readfds.fd_array[i], "r", 0, 0 );
1638 #else
1639                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1640                                 readfds.fd_array[i], "r", 0 );
1641 #endif
1642                 }
1643                 for ( i = 0; i < writefds.fd_count; i++ ) {
1644 #ifdef NEW_LOGGING
1645                         LDAP_LOG( CONNECTION, DETAIL2,
1646                                 " %d%s", writefds.fd_array[i], "w" , 0 );
1647 #else
1648                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1649                                 writefds.fd_array[i], "w", 0 );
1650 #endif
1651                 }
1652
1653 #else
1654                 for ( i = 0; i < nfds; i++ ) {
1655                         int     r, w;
1656                         int     is_listener = 0;
1657
1658                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1659                                 if ( i == slap_listeners[l]->sl_sd ) {
1660 #ifdef LDAP_CONNECTIONLESS
1661                                 /* The listener is the data port. Don't
1662                                  * skip it.
1663                                  */
1664                                         if (slap_listeners[l]->sl_is_udp)
1665                                                 continue;
1666 #endif
1667                                         is_listener = 1;
1668                                         break;
1669                                 }
1670                         }
1671                         if ( is_listener ) {
1672                                 continue;
1673                         }
1674                         r = FD_ISSET( i, &readfds );
1675                         w = FD_ISSET( i, &writefds );
1676                         if ( r || w ) {
1677 #ifdef NEW_LOGGING
1678                                 LDAP_LOG( CONNECTION, DETAIL2,
1679                                         " %d%s%s", i, r ? "r" : "", w ? "w" : "" );
1680 #else
1681                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1682                                     r ? "r" : "", w ? "w" : "" );
1683 #endif
1684                         }
1685                 }
1686 #endif
1687 #ifdef NEW_LOGGING
1688                 LDAP_LOG( CONNECTION, DETAIL2, "\n", 0, 0, 0 );
1689 #else
1690                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1691 #endif
1692
1693 #endif
1694
1695                 /* loop through the writers */
1696 #ifdef HAVE_WINSOCK
1697                 for ( i = 0; i < writefds.fd_count; i++ )
1698 #else
1699                 for ( i = 0; i < nfds; i++ )
1700 #endif
1701                 {
1702                         ber_socket_t wd;
1703                         int is_listener = 0;
1704 #ifdef HAVE_WINSOCK
1705                         wd = writefds.fd_array[i];
1706 #else
1707                         if( ! FD_ISSET( i, &writefds ) ) {
1708                                 continue;
1709                         }
1710                         wd = i;
1711 #endif
1712
1713                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1714                                 if ( i == slap_listeners[l]->sl_sd ) {
1715 #ifdef LDAP_CONNECTIONLESS
1716                                         if (slap_listeners[l]->sl_is_udp)
1717                                                 continue;
1718 #endif
1719                                         is_listener = 1;
1720                                         break;
1721                                 }
1722                         }
1723                         if ( is_listener ) {
1724                                 continue;
1725                         }
1726 #ifdef NEW_LOGGING
1727                         LDAP_LOG( CONNECTION, DETAIL2,
1728                                 "slapd_daemon_task: write active on %d\n", wd, 0, 0 );
1729 #else
1730                         Debug( LDAP_DEBUG_CONNS,
1731                                 "daemon: write active on %d\n",
1732                                 wd, 0, 0 );
1733 #endif
1734                         /*
1735                          * NOTE: it is possible that the connection was closed
1736                          * and that the stream is now inactive.
1737                          * connection_write() must valid the stream is still
1738                          * active.
1739                          */
1740
1741                         if ( connection_write( wd ) < 0 ) {
1742                                 FD_CLR( (unsigned) wd, &readfds );
1743                                 slapd_close( wd );
1744                         }
1745                 }
1746
1747 #ifdef HAVE_WINSOCK
1748                 for ( i = 0; i < readfds.fd_count; i++ )
1749 #else
1750                 for ( i = 0; i < nfds; i++ )
1751 #endif
1752                 {
1753                         ber_socket_t rd;
1754                         int is_listener = 0;
1755
1756 #ifdef HAVE_WINSOCK
1757                         rd = readfds.fd_array[i];
1758 #else
1759                         if( ! FD_ISSET( i, &readfds ) ) {
1760                                 continue;
1761                         }
1762                         rd = i;
1763 #endif
1764
1765                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1766                                 if ( rd == slap_listeners[l]->sl_sd ) {
1767 #ifdef LDAP_CONNECTIONLESS
1768                                         if (slap_listeners[l]->sl_is_udp)
1769                                                 continue;
1770 #endif
1771                                         is_listener = 1;
1772                                         break;
1773                                 }
1774                         }
1775                         if ( is_listener ) {
1776                                 continue;
1777                         }
1778
1779 #ifdef NEW_LOGGING
1780                         LDAP_LOG( CONNECTION, DETAIL2,
1781                                 "slapd_daemon_task: read activity on %d\n", rd, 0, 0 );
1782 #else
1783                         Debug ( LDAP_DEBUG_CONNS,
1784                                 "daemon: read activity on %d\n", rd, 0, 0 );
1785 #endif
1786                         /*
1787                          * NOTE: it is possible that the connection was closed
1788                          * and that the stream is now inactive.
1789                          * connection_read() must valid the stream is still
1790                          * active.
1791                          */
1792
1793                         if ( connection_read( rd ) < 0 ) {
1794                                 slapd_close( rd );
1795                         }
1796                 }
1797                 ldap_pvt_thread_yield();
1798         }
1799
1800         if( slapd_shutdown == 1 ) {
1801 #ifdef NEW_LOGGING
1802                 LDAP_LOG( CONNECTION, CRIT,
1803                    "slapd_daemon_task: shutdown requested and initiated.\n", 0, 0, 0 );
1804 #else
1805                 Debug( LDAP_DEBUG_TRACE,
1806                         "daemon: shutdown requested and initiated.\n",
1807                         0, 0, 0 );
1808 #endif
1809
1810         } else if ( slapd_shutdown == 2 ) {
1811 #ifdef HAVE_NT_SERVICE_MANAGER
1812 #ifdef NEW_LOGGING
1813                         LDAP_LOG( CONNECTION, CRIT,
1814                            "slapd_daemon_task: shutdown initiated by Service Manager.\n",
1815                            0, 0, 0);
1816 #else
1817                         Debug( LDAP_DEBUG_TRACE,
1818                                "daemon: shutdown initiated by Service Manager.\n",
1819                                0, 0, 0);
1820 #endif
1821 #else /* !HAVE_NT_SERVICE_MANAGER */
1822 #ifdef NEW_LOGGING
1823                         LDAP_LOG( CONNECTION, CRIT,
1824                            "slapd_daemon_task: abnormal condition, "
1825                            "shutdown initiated.\n", 0, 0, 0 );
1826 #else
1827                         Debug( LDAP_DEBUG_TRACE,
1828                                "daemon: abnormal condition, shutdown initiated.\n",
1829                                0, 0, 0 );
1830 #endif
1831 #endif /* !HAVE_NT_SERVICE_MANAGER */
1832         } else {
1833 #ifdef NEW_LOGGING
1834                 LDAP_LOG( CONNECTION, CRIT,
1835                    "slapd_daemon_task: no active streams, shutdown initiated.\n",
1836                    0, 0, 0 );
1837 #else
1838                 Debug( LDAP_DEBUG_TRACE,
1839                        "daemon: no active streams, shutdown initiated.\n",
1840                        0, 0, 0 );
1841 #endif
1842         }
1843
1844         if( slapd_gentle_shutdown != 2 )
1845                 close_listeners ( 0 );
1846         free ( slap_listeners );
1847         slap_listeners = NULL;
1848
1849 #ifdef NEW_LOGGING
1850         LDAP_LOG( CONNECTION, CRIT,
1851                 "slapd_daemon_task: shutdown waiting for %d threads to terminate.\n",
1852                 ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1853 #else
1854         Debug( LDAP_DEBUG_ANY,
1855             "slapd shutdown: waiting for %d threads to terminate\n",
1856             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1857 #endif
1858         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1859
1860         return NULL;
1861 }
1862
1863
1864 int slapd_daemon( void )
1865 {
1866         int rc;
1867
1868         connections_init();
1869
1870 #define SLAPD_LISTENER_THREAD 1
1871 #if defined( SLAPD_LISTENER_THREAD )
1872         {
1873                 ldap_pvt_thread_t       listener_tid;
1874
1875                 /* listener as a separate THREAD */
1876                 rc = ldap_pvt_thread_create( &listener_tid,
1877                         0, slapd_daemon_task, NULL );
1878
1879                 if ( rc != 0 ) {
1880 #ifdef NEW_LOGGING
1881                         LDAP_LOG( CONNECTION, ERR,
1882                                 "slapd_daemon: listener ldap_pvt_thread_create failed (%d).\n",
1883                                 rc, 0, 0 );
1884 #else
1885                         Debug( LDAP_DEBUG_ANY,
1886                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
1887 #endif
1888                         return rc;
1889                 }
1890
1891                 /* wait for the listener thread to complete */
1892                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
1893         }
1894 #else
1895         /* experimental code */
1896         slapd_daemon_task( NULL );
1897 #endif
1898
1899         return 0;
1900
1901 }
1902
1903 int sockinit(void)
1904 {
1905 #if defined( HAVE_WINSOCK2 )
1906     WORD wVersionRequested;
1907         WSADATA wsaData;
1908         int err;
1909
1910         wVersionRequested = MAKEWORD( 2, 0 );
1911
1912         err = WSAStartup( wVersionRequested, &wsaData );
1913         if ( err != 0 ) {
1914                 /* Tell the user that we couldn't find a usable */
1915                 /* WinSock DLL.                                  */
1916                 return -1;
1917         }
1918
1919         /* Confirm that the WinSock DLL supports 2.0.*/
1920         /* Note that if the DLL supports versions greater    */
1921         /* than 2.0 in addition to 2.0, it will still return */
1922         /* 2.0 in wVersion since that is the version we      */
1923         /* requested.                                        */
1924
1925         if ( LOBYTE( wsaData.wVersion ) != 2 ||
1926                 HIBYTE( wsaData.wVersion ) != 0 )
1927         {
1928             /* Tell the user that we couldn't find a usable */
1929             /* WinSock DLL.                                  */
1930             WSACleanup();
1931             return -1;
1932         }
1933
1934         /* The WinSock DLL is acceptable. Proceed. */
1935 #elif defined( HAVE_WINSOCK )
1936         WSADATA wsaData;
1937         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
1938             return -1;
1939         }
1940 #endif
1941         return 0;
1942 }
1943
1944 int sockdestroy(void)
1945 {
1946 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
1947         WSACleanup();
1948 #endif
1949         return 0;
1950 }
1951
1952 RETSIGTYPE
1953 slap_sig_shutdown( int sig )
1954 {
1955 #ifdef NEW_LOGGING
1956         LDAP_LOG( CONNECTION, CRIT,
1957                 "slap_sig_shutdown: signal %d\n", sig, 0, 0 );
1958 #else
1959         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
1960 #endif
1961
1962         /*
1963          * If the NT Service Manager is controlling the server, we don't
1964          * want SIGBREAK to kill the server. For some strange reason,
1965          * SIGBREAK is generated when a user logs out.
1966          */
1967
1968 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
1969         if (is_NT_Service && sig == SIGBREAK)
1970 #ifdef NEW_LOGGING
1971             LDAP_LOG( CONNECTION, CRIT,
1972                     "slap_sig_shutdown: SIGBREAK ignored.\n", 0, 0, 0 );
1973 #else
1974             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
1975                   0, 0, 0);
1976 #endif
1977         else
1978 #endif
1979 #ifdef SIGHUP
1980         if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0)
1981                 slapd_gentle_shutdown = 1;
1982         else
1983 #endif
1984         slapd_shutdown = 1;
1985
1986         WAKE_LISTENER(1);
1987
1988         /* reinstall self */
1989         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
1990 }
1991
1992 RETSIGTYPE
1993 slap_sig_wake( int sig )
1994 {
1995         WAKE_LISTENER(1);
1996
1997         /* reinstall self */
1998         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
1999 }
2000
2001
2002 void slapd_add_internal(ber_socket_t s) {
2003         slapd_add(s);
2004 }
2005
2006 Listener ** slapd_get_listeners(void) {
2007         return slap_listeners;
2008 }