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 #ifdef LDAP_PF_INET6
  37 int slap_inet4or6 = AF_UNSPEC;
  38 #else
  39 int slap_inet4or6 = AF_INET;
  40 #endif
  41
  42 /* globals */
  43 time_t starttime;
  44 ber_socket_t dtblsize;
  45
  46 Listener **slap_listeners = NULL;
  47
  48 #define SLAPD_LISTEN 10
  49
  50 static ber_socket_t wake_sds[2];
  51
  52 #if defined(NO_THREADS) || defined(HAVE_GNU_PTH)
  53 static int waking;
  54 #define WAKE_LISTENER(w) \
  55 ((w && !waking) ? tcp_write( wake_sds[1], "0", 1 ), waking=1 : 0)
  56 #else
  57 #define WAKE_LISTENER(w) \
  58 do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0)
  59 #endif
  60
  61 #ifndef HAVE_WINSOCK
  62 static
  63 #endif
  64 volatile sig_atomic_t slapd_shutdown = 0, slapd_gentle_shutdown = 0;
  65
  66 static struct slap_daemon {
  67         ldap_pvt_thread_mutex_t sd_mutex;
  68
  69         ber_socket_t sd_nactives;
  70
  71 #ifndef HAVE_WINSOCK
  72         /* In winsock, accept() returns values higher than dtblsize
  73                 so don't bother with this optimization */
  74         int sd_nfds;
  75 #endif
  76
  77         fd_set sd_actives;
  78         fd_set sd_readers;
  79         fd_set sd_writers;
  80 } slap_daemon;
  81
  82
  83
  84 #ifdef HAVE_SLP
  85 /*
  86  * SLP related functions
  87  */
  88 #include <slp.h>
  89
  90 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
  91 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
  92 static char** slapd_srvurls = NULL;
  93 static SLPHandle slapd_hslp = 0;
  94
  95 void slapd_slp_init( const char* urls ) {
  96         int i;
  97
  98         slapd_srvurls = ldap_str2charray( urls, " " );
  99
 100         if( slapd_srvurls == NULL ) return;
 101
 102         /* find and expand INADDR_ANY URLs */
 103         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 104                 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
 105                         char *host = ldap_pvt_get_fqdn( NULL );
 106                         if ( host != NULL ) {
 107                                 slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
 108                                         strlen( host ) +
 109                                         sizeof( LDAP_SRVTYPE_PREFIX ) );
 110                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 111                                         LDAP_SRVTYPE_PREFIX ), host );
 112
 113                                 ch_free( host );
 114                         }
 115
 116                 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
 117                         char *host = ldap_pvt_get_fqdn( NULL );
 118                         if ( host != NULL ) {
 119                                 slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
 120                                         strlen( host ) +
 121                                         sizeof( LDAPS_SRVTYPE_PREFIX ) );
 122                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 123                                         LDAPS_SRVTYPE_PREFIX ), host );
 124
 125                                 ch_free( host );
 126                         }
 127                 }
 128         }
 129
 130         /* open the SLP handle */
 131         SLPOpen( "en", 0, &slapd_hslp );
 132 }
 133
 134 void slapd_slp_deinit() {
 135         if( slapd_srvurls == NULL ) return;
 136
 137         ldap_charray_free( slapd_srvurls );
 138         slapd_srvurls = NULL;
 139
 140         /* close the SLP handle */
 141         SLPClose( slapd_hslp );
 142 }
 143
 144 void slapd_slp_regreport(
 145         SLPHandle hslp,
 146         SLPError errcode,
 147         void* cookie )
 148 {
 149         /* empty report */
 150 }
 151
 152 void slapd_slp_reg() {
 153         int i;
 154
 155         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 156                 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
 157                                 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
 158                     strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
 159                                 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
 160                 {
 161                         SLPReg( slapd_hslp,
 162                                 slapd_srvurls[i],
 163                                 SLP_LIFETIME_MAXIMUM,
 164                                 "ldap",
 165                                 "",
 166                                 1,
 167                                 slapd_slp_regreport,
 168                                 NULL );
 169                 }
 170         }
 171 }
 172
 173 void slapd_slp_dereg() {
 174         int i;
 175
 176         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 177                 SLPDereg( slapd_hslp,
 178                         slapd_srvurls[i],
 179                         slapd_slp_regreport,
 180                         NULL );
 181         }
 182 }
 183 #endif /* HAVE_SLP */
 184
 185 /*
 186  * Add a descriptor to daemon control
 187  */
 188 static void slapd_add(ber_socket_t s) {
 189         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 190
 191         assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
 192         assert( !FD_ISSET( s, &slap_daemon.sd_readers ));
 193         assert( !FD_ISSET( s, &slap_daemon.sd_writers ));
 194
 195 #ifndef HAVE_WINSOCK
 196         if (s >= slap_daemon.sd_nfds) {
 197                 slap_daemon.sd_nfds = s + 1;
 198         }
 199 #endif
 200
 201         slap_daemon.sd_nactives++;
 202
 203         FD_SET( s, &slap_daemon.sd_actives );
 204         FD_SET( s, &slap_daemon.sd_readers );
 205
 206 #ifdef NEW_LOGGING
 207         LDAP_LOG( CONNECTION, DETAIL1,
 208                 "slapd_add: added %ld%s%s\n", (long)s,
 209                 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 210                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 211 #else
 212         Debug( LDAP_DEBUG_CONNS, "daemon: added %ld%s%s\n",
 213                 (long) s,
 214             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 215                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 216 #endif
 217         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 218 }
 219
 220 /*
 221  * Remove the descriptor from daemon control
 222  */
 223 void slapd_remove(ber_socket_t s, int wake) {
 224         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 225
 226         slap_daemon.sd_nactives--;
 227
 228 #ifdef NEW_LOGGING
 229         LDAP_LOG( CONNECTION, DETAIL1,
 230                 "slapd_remove: removing %ld%s%s\n", (long) s,
 231                 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 232                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : ""  );
 233 #else
 234         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 235                 (long) s,
 236             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 237                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 238 #endif
 239         FD_CLR( s, &slap_daemon.sd_actives );
 240         FD_CLR( s, &slap_daemon.sd_readers );
 241         FD_CLR( s, &slap_daemon.sd_writers );
 242
 243         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 244         WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
 245 }
 246
 247 void slapd_clr_write(ber_socket_t s, int wake) {
 248         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 249
 250         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 251         FD_CLR( s, &slap_daemon.sd_writers );
 252
 253         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 254         WAKE_LISTENER(wake);
 255 }
 256
 257 void slapd_set_write(ber_socket_t s, int wake) {
 258         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 259
 260         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 261         if (!FD_ISSET(s, &slap_daemon.sd_writers))
 262             FD_SET( (unsigned) s, &slap_daemon.sd_writers );
 263
 264         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 265         WAKE_LISTENER(wake);
 266 }
 267
 268 void slapd_clr_read(ber_socket_t s, int wake) {
 269         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 270
 271         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 272         FD_CLR( s, &slap_daemon.sd_readers );
 273
 274         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 275         WAKE_LISTENER(wake);
 276 }
 277
 278 void slapd_set_read(ber_socket_t s, int wake) {
 279         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 280
 281         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 282         if (!FD_ISSET(s, &slap_daemon.sd_readers))
 283             FD_SET( s, &slap_daemon.sd_readers );
 284
 285         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 286         WAKE_LISTENER(wake);
 287 }
 288
 289 static void slapd_close(ber_socket_t s) {
 290 #ifdef NEW_LOGGING
 291         LDAP_LOG( CONNECTION, DETAIL1, "slapd_close: closing %ld\n", (long)s, 0, 0);
 292 #else
 293         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 294                 (long) s, 0, 0 );
 295 #endif
 296         tcp_close(s);
 297 }
 298
 299 static void slap_free_listener_addresses(struct sockaddr **sal)
 300 {
 301         struct sockaddr **sap;
 302
 303         if (sal == NULL) {
 304                 return;
 305         }
 306
 307         for (sap = sal; *sap != NULL; sap++) {
 308                 ch_free(*sap);
 309         }
 310
 311         ch_free(sal);
 312 }
 313
 314 #ifdef LDAP_PF_LOCAL
 315 static int get_url_perms(
 316         char    **exts,
 317         mode_t  *perms,
 318         int     *crit )
 319 {
 320         int     i;
 321
 322         assert( exts );
 323         assert( perms );
 324         assert( crit );
 325
 326         *crit = 0;
 327         for ( i = 0; exts[ i ]; i++ ) {
 328                 char    *type = exts[ i ];
 329                 int     c = 0;
 330
 331                 if ( type[ 0 ] == '!' ) {
 332                         c = 1;
 333                         type++;
 334                 }
 335
 336                 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=", sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 ) {
 337                         char    *value = type
 338                                 + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
 339                         mode_t  p = 0;
 340                         int     j;
 341
 342                         switch (strlen(value)) {
 343                         case 4:
 344                                 /* skip leading '0' */
 345                                 if ( value[ 0 ] != '0' ) {
 346                                         return LDAP_OTHER;
 347                                 }
 348                                 value++;
 349
 350                         case 3:
 351                                 for ( j = 0; j < 3; j++) {
 352                                         int     v;
 353
 354                                         v = value[ j ] - '0';
 355
 356                                         if ( v < 0 || v > 7 ) {
 357                                                 return LDAP_OTHER;
 358                                         }
 359
 360                                         p |= v << 3*(2-j);
 361                                 }
 362                                 break;
 363
 364                         case 10:
 365                                 for ( j = 1; j < 10; j++ ) {
 366                                         static mode_t   m[] = { 0,
 367                                                 S_IRUSR, S_IWUSR, S_IXUSR,
 368                                                 S_IRGRP, S_IWGRP, S_IXGRP,
 369                                                 S_IROTH, S_IWOTH, S_IXOTH
 370                                         };
 371                                         static char     c[] = "-rwxrwxrwx";
 372
 373                                         if ( value[ j ] == c[ j ] ) {
 374                                                 p |= m[ j ];
 375
 376                                         } else if ( value[ j ] != '-' ) {
 377                                                 return LDAP_OTHER;
 378                                         }
 379                                 }
 380                                 break;
 381
 382                         default:
 383                                 return LDAP_OTHER;
 384                         }
 385
 386                         *crit = c;
 387                         *perms = p;
 388
 389                         return LDAP_SUCCESS;
 390                 }
 391         }
 392
 393         return LDAP_OTHER;
 394 }
 395 #endif /* LDAP_PF_LOCAL */
 396
 397 /* port = 0 indicates AF_LOCAL */
 398 static int slap_get_listener_addresses(
 399         const char *host,
 400         unsigned short port,
 401         struct sockaddr ***sal)
 402 {
 403         struct sockaddr **sap;
 404
 405 #ifdef LDAP_PF_LOCAL
 406         if ( port == 0 ) {
 407                 *sal = ch_malloc(2 * sizeof(void *));
 408                 if (*sal == NULL) {
 409                         return -1;
 410                 }
 411
 412                 sap = *sal;
 413                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 414                 if (*sap == NULL)
 415                         goto errexit;
 416                 sap[1] = NULL;
 417
 418                 if ( strlen(host) >
 419                      (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 420 #ifdef NEW_LOGGING
 421                         LDAP_LOG( CONNECTION, INFO,
 422                                 "slap_get_listener_addresses: domain socket path (%s) "
 423                                 "too long in URL\n", host, 0, 0 );
 424 #else
 425                         Debug( LDAP_DEBUG_ANY,
 426                                "daemon: domain socket path (%s) too long in URL",
 427                                host, 0, 0);
 428 #endif
 429                         goto errexit;
 430                 }
 431
 432                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 433                 (*sap)->sa_family = AF_LOCAL;
 434                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 435         } else
 436 #endif
 437         {
 438 #ifdef HAVE_GETADDRINFO
 439                 struct addrinfo hints, *res, *sai;
 440                 int n, err;
 441                 char serv[7];
 442
 443                 memset( &hints, '\0', sizeof(hints) );
 444                 hints.ai_flags = AI_PASSIVE;
 445                 hints.ai_socktype = SOCK_STREAM;
 446                 hints.ai_family = slap_inet4or6;
 447                 snprintf(serv, sizeof serv, "%d", port);
 448
 449                 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
 450 #ifdef NEW_LOGGING
 451                         LDAP_LOG( CONNECTION, INFO,
 452                                    "slap_get_listener_addresses: getaddrinfo failed: %s\n",
 453                                    AC_GAI_STRERROR(err), 0, 0 );
 454 #else
 455                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 456                                 AC_GAI_STRERROR(err), 0, 0);
 457 #endif
 458                         return -1;
 459                 }
 460
 461                 sai = res;
 462                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
 463                         /* EMPTY */ ;
 464                 }
 465                 *sal = ch_calloc(n, sizeof(void *));
 466                 if (*sal == NULL) {
 467                         return -1;
 468                 }
 469
 470                 sap = *sal;
 471                 *sap = NULL;
 472
 473                 for ( sai=res; sai; sai=sai->ai_next ) {
 474                         if( sai->ai_addr == NULL ) {
 475 #ifdef NEW_LOGGING
 476                                 LDAP_LOG( CONNECTION, INFO,
 477                                         "slap_get_listener_addresses: "
 478                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 479 #else
 480                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
 481                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 482 #endif
 483                                 freeaddrinfo(res);
 484                                 goto errexit;
 485                         }
 486
 487                         switch (sai->ai_family) {
 488 #  ifdef LDAP_PF_INET6
 489                         case AF_INET6:
 490                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 491                                 if (*sap == NULL) {
 492                                         freeaddrinfo(res);
 493                                         goto errexit;
 494                                 }
 495                                 *(struct sockaddr_in6 *)*sap =
 496                                         *((struct sockaddr_in6 *)sai->ai_addr);
 497                                 break;
 498 #  endif
 499                         case AF_INET:
 500                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 501                                 if (*sap == NULL) {
 502                                         freeaddrinfo(res);
 503                                         goto errexit;
 504                                 }
 505                                 *(struct sockaddr_in *)*sap =
 506                                         *((struct sockaddr_in *)sai->ai_addr);
 507                                 break;
 508                         default:
 509                                 *sap = NULL;
 510                                 break;
 511                         }
 512
 513                         if (*sap != NULL) {
 514                                 (*sap)->sa_family = sai->ai_family;
 515                                 sap++;
 516                                 *sap = NULL;
 517                         }
 518                 }
 519
 520                 freeaddrinfo(res);
 521 #else
 522                 int i, n = 1;
 523                 struct in_addr in;
 524                 struct hostent *he = NULL;
 525
 526                 if ( host == NULL ) {
 527                         in.s_addr = htonl(INADDR_ANY);
 528
 529                 } else if ( !inet_aton( host, &in ) ) {
 530                         he = gethostbyname( host );
 531                         if( he == NULL ) {
 532 #ifdef NEW_LOGGING
 533                                 LDAP_LOG( CONNECTION, INFO,
 534                                         "slap_get_listener_addresses: invalid host %s\n", host, 0, 0 );
 535 #else
 536                                 Debug( LDAP_DEBUG_ANY,
 537                                        "daemon: invalid host %s", host, 0, 0);
 538 #endif
 539                                 return -1;
 540                         }
 541                         for (n = 0; he->h_addr_list[n]; n++) ;
 542                 }
 543
 544                 *sal = ch_malloc((n+1) * sizeof(void *));
 545                 if (*sal == NULL) {
 546                         return -1;
 547                 }
 548
 549                 sap = *sal;
 550                 for ( i = 0; i<n; i++ ) {
 551                         sap[i] = ch_malloc(sizeof(struct sockaddr_in));
 552                         if (*sap == NULL) {
 553                                 goto errexit;
 554                         }
 555                         (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
 556                         sap[i]->sa_family = AF_INET;
 557                         ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
 558                         if (he) {
 559                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, he->h_addr_list[i], sizeof(struct in_addr) );
 560                         } else {
 561                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, &in, sizeof(struct in_addr) );
 562                         }
 563                 }
 564                 sap[i] = NULL;
 565 #endif
 566         }
 567
 568         return 0;
 569
 570 errexit:
 571         slap_free_listener_addresses(*sal);
 572         return -1;
 573 }
 574
 575 static int slap_open_listener(
 576         const char* url,
 577         int *listeners,
 578         int *cur
 579         )
 580 {
 581         int     num, tmp, rc;
 582         Listener l;
 583         Listener *li;
 584         LDAPURLDesc *lud;
 585         unsigned short port;
 586         int err, addrlen = 0;
 587         struct sockaddr **sal, **psal;
 588         int socktype = SOCK_STREAM;     /* default to COTS */
 589
 590 #ifdef LDAP_PF_LOCAL
 591         /*
 592          * use safe defaults
 593          */
 594         mode_t  perms = S_IRWXU;
 595         int     crit = 1;
 596 #endif
 597
 598         rc = ldap_url_parse( url, &lud );
 599
 600         if( rc != LDAP_URL_SUCCESS ) {
 601 #ifdef NEW_LOGGING
 602                 LDAP_LOG( CONNECTION, ERR,
 603                         "slap_open_listener: listen URL \"%s\" parse error %d\n",
 604                         url, rc , 0 );
 605 #else
 606                 Debug( LDAP_DEBUG_ANY,
 607                         "daemon: listen URL \"%s\" parse error=%d\n",
 608                         url, rc, 0 );
 609 #endif
 610                 return rc;
 611         }
 612
 613         l.sl_url.bv_val = NULL;
 614
 615 #ifndef HAVE_TLS
 616         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 617 #ifdef NEW_LOGGING
 618                 LDAP_LOG( CONNECTION, INFO,
 619                            "slap_open_listener: TLS is not supported (%s)\n", url, 0, 0 );
 620 #else
 621                 Debug( LDAP_DEBUG_ANY,
 622                         "daemon: TLS not supported (%s)\n",
 623                         url, 0, 0 );
 624 #endif
 625                 ldap_free_urldesc( lud );
 626                 return -1;
 627         }
 628
 629         if(! lud->lud_port ) {
 630                 lud->lud_port = LDAP_PORT;
 631         }
 632
 633 #else
 634         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 635
 636         if(! lud->lud_port ) {
 637                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 638         }
 639 #endif
 640
 641         port = (unsigned short) lud->lud_port;
 642
 643         tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
 644         if ( tmp == LDAP_PROTO_IPC ) {
 645 #ifdef LDAP_PF_LOCAL
 646                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 647                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 648                 } else {
 649                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 650                 }
 651
 652                 if ( lud->lud_exts ) {
 653                         err = get_url_perms( lud->lud_exts, &perms, &crit );
 654                 }
 655 #else
 656
 657 #ifdef NEW_LOGGING
 658                 LDAP_LOG( CONNECTION, INFO,
 659                         "slap_open_listener: URL scheme is not supported: %s\n", url, 0, 0 );
 660 #else
 661                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 662                         url, 0, 0);
 663 #endif
 664                 ldap_free_urldesc( lud );
 665                 return -1;
 666 #endif
 667         } else {
 668 #ifdef LDAP_CONNECTIONLESS
 669                 l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
 670 #endif
 671                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 672                         || strcmp(lud->lud_host, "*") == 0 )
 673                 {
 674                         err = slap_get_listener_addresses(NULL, port, &sal);
 675                 } else {
 676                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 677                 }
 678         }
 679
 680         ldap_free_urldesc( lud );
 681         if ( err ) {
 682                 return -1;
 683         }
 684
 685         /* If we got more than one address returned, we need to make space
 686          * for it in the slap_listeners array.
 687          */
 688         for ( num=0; sal[num]; num++ );
 689         if ( num > 1 ) {
 690                 *listeners += num-1;
 691                 slap_listeners = ch_realloc( slap_listeners, (*listeners + 1) * sizeof(Listener *) );
 692         }
 693
 694         psal = sal;
 695         while ( *sal != NULL ) {
 696                 switch( (*sal)->sa_family ) {
 697                 case AF_INET:
 698 #ifdef LDAP_PF_INET6
 699                 case AF_INET6:
 700 #endif
 701 #ifdef LDAP_PF_LOCAL
 702                 case AF_LOCAL:
 703 #endif
 704                         break;
 705                 default:
 706                         sal++;
 707                         continue;
 708                 }
 709 #ifdef LDAP_CONNECTIONLESS
 710                 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
 711 #endif
 712                 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
 713                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 714                         int err = sock_errno();
 715 #ifdef NEW_LOGGING
 716                         LDAP_LOG( CONNECTION, ERR,
 717                                 "slap_open_listener: socket() failed errno=%d (%s)\n",
 718                                 err, sock_errstr(err), 0 );
 719 #else
 720                         Debug( LDAP_DEBUG_ANY,
 721                                 "daemon: socket() failed errno=%d (%s)\n", err,
 722                                 sock_errstr(err), 0 );
 723 #endif
 724                         sal++;
 725                         continue;
 726                 }
 727 #ifndef HAVE_WINSOCK
 728                 if ( l.sl_sd >= dtblsize ) {
 729 #ifdef NEW_LOGGING
 730                         LDAP_LOG( CONNECTION, ERR,
 731                                 "slap_open_listener: listener descriptor %ld is too "
 732                                 "great %ld\n", (long)l.sl_sd, (long)dtblsize, 0 );
 733 #else
 734                         Debug( LDAP_DEBUG_ANY,
 735                                "daemon: listener descriptor %ld is too great %ld\n",
 736                                (long) l.sl_sd, (long) dtblsize, 0 );
 737 #endif
 738                         tcp_close( l.sl_sd );
 739                         sal++;
 740                         continue;
 741                 }
 742 #endif
 743 #ifdef LDAP_PF_LOCAL
 744                 if ( (*sal)->sa_family == AF_LOCAL ) {
 745                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 746                 } else
 747 #endif
 748                 {
 749 #ifdef SO_REUSEADDR
 750                         /* enable address reuse */
 751                         tmp = 1;
 752                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 753                                          (char *) &tmp, sizeof(tmp) );
 754                         if ( rc == AC_SOCKET_ERROR ) {
 755                                 int err = sock_errno();
 756 #ifdef NEW_LOGGING
 757                                 LDAP_LOG( CONNECTION, INFO,
 758                                         "slap_open_listener: setsockopt( %ld, SO_REUSEADDR ) "
 759                                         "failed errno %d (%s)\n", (long)l.sl_sd, err,
 760                                         sock_errstr(err) );
 761 #else
 762                                 Debug( LDAP_DEBUG_ANY,
 763                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 764                                        (long) l.sl_sd, err, sock_errstr(err) );
 765 #endif
 766                         }
 767 #endif
 768                 }
 769
 770                 switch( (*sal)->sa_family ) {
 771                 case AF_INET:
 772                         addrlen = sizeof(struct sockaddr_in);
 773                         break;
 774 #ifdef LDAP_PF_INET6
 775                 case AF_INET6:
 776 #ifdef IPV6_V6ONLY
 777                         /* Try to use IPv6 sockets for IPv6 only */
 778                         tmp = 1;
 779                         rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
 780                                          (char *) &tmp, sizeof(tmp) );
 781                         if ( rc == AC_SOCKET_ERROR ) {
 782                                 int err = sock_errno();
 783 #ifdef NEW_LOGGING
 784                                 LDAP_LOG( CONNECTION, INFO,
 785                                            "slap_open_listener: setsockopt( %ld, IPV6_V6ONLY ) failed errno %d (%s)\n",
 786                                            (long)l.sl_sd, err, sock_errstr(err) );
 787 #else
 788                                 Debug( LDAP_DEBUG_ANY,
 789                                        "slapd(%ld): setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
 790                                        (long) l.sl_sd, err, sock_errstr(err) );
 791 #endif
 792                         }
 793 #endif
 794                         addrlen = sizeof(struct sockaddr_in6);
 795                         break;
 796 #endif
 797 #ifdef LDAP_PF_LOCAL
 798                 case AF_LOCAL:
 799                         addrlen = sizeof(struct sockaddr_un);
 800                         break;
 801 #endif
 802                 }
 803
 804                 if (bind(l.sl_sd, *sal, addrlen)) {
 805                         err = sock_errno();
 806 #ifdef NEW_LOGGING
 807                 LDAP_LOG( CONNECTION, INFO,
 808                         "slap_open_listener: bind(%ld) failed errno=%d (%s)\n",
 809                         (long)l.sl_sd, err, sock_errstr(err) );
 810 #else
 811                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 812                        (long) l.sl_sd, err, sock_errstr(err) );
 813 #endif
 814                         tcp_close( l.sl_sd );
 815                         sal++;
 816                         continue;
 817                 }
 818
 819         switch ( (*sal)->sa_family ) {
 820 #ifdef LDAP_PF_LOCAL
 821         case AF_LOCAL: {
 822                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 823                 if ( chmod( addr, perms ) < 0 && crit ) {
 824                         int err = sock_errno();
 825 #ifdef NEW_LOGGING
 826                         LDAP_LOG( CONNECTION, INFO,
 827                                 "slap_open_listener: fchmod(%ld) failed errno=%d (%s)\n",
 828                                 (long)l.sl_sd, err, sock_errstr(err) );
 829 #else
 830                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 831                                (long) l.sl_sd, err, sock_errstr(err) );
 832 #endif
 833                         tcp_close( l.sl_sd );
 834                         slap_free_listener_addresses(psal);
 835                         return -1;
 836                 }
 837                 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
 838                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
 839                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
 840                                 "PATH=%s", addr );
 841         } break;
 842 #endif /* LDAP_PF_LOCAL */
 843
 844         case AF_INET: {
 845                 char *s;
 846 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
 847                 char addr[INET_ADDRSTRLEN];
 848                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
 849                            addr, sizeof(addr) );
 850                 s = addr;
 851 #else
 852                 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
 853 #endif
 854                 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
 855                 l.sl_name.bv_val = ber_memalloc( sizeof("IP=255.255.255.255:65535") );
 856                 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
 857                         "IP=%s:%d",
 858                          s != NULL ? s : "unknown" , port );
 859                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
 860         } break;
 861
 862 #ifdef LDAP_PF_INET6
 863         case AF_INET6: {
 864                 char addr[INET6_ADDRSTRLEN];
 865                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
 866                            addr, sizeof addr);
 867                 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
 868                 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
 869                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
 870                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
 871                                 addr, port );
 872                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
 873         } break;
 874 #endif /* LDAP_PF_INET6 */
 875
 876         default:
 877 #ifdef NEW_LOGGING
 878                 LDAP_LOG( CONNECTION, INFO,
 879                         "slap_open_listener: unsupported address family (%d)\n",
 880                         (int)(*sal)->sa_family, 0, 0 );
 881 #else
 882                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 883                         (int) (*sal)->sa_family, 0, 0 );
 884 #endif
 885                 break;
 886         }
 887
 888         AC_MEMCPY(&l.sl_sa, *sal, addrlen);
 889         ber_str2bv( url, 0, 1, &l.sl_url);
 890         li = ch_malloc( sizeof( Listener ) );
 891         *li = l;
 892         slap_listeners[*cur] = li;
 893         (*cur)++;
 894         sal++;
 895
 896         } /* while ( *sal != NULL ) */
 897
 898         slap_free_listener_addresses(psal);
 899
 900         if ( l.sl_url.bv_val == NULL )
 901         {
 902 #ifdef NEW_LOGGING
 903                 LDAP_LOG( CONNECTION, RESULTS,
 904                         "slap_open_listener: failed on %s\n", url, 0, 0 );
 905 #else
 906                 Debug( LDAP_DEBUG_TRACE,
 907                         "slap_open_listener: failed on %s\n", url, 0, 0 );
 908 #endif
 909                 return -1;
 910         }
 911
 912 #ifdef NEW_LOGGING
 913         LDAP_LOG( CONNECTION, RESULTS,
 914                 "slap_open_listener: daemon initialized %s\n",
 915                 l.sl_url.bv_val, 0, 0 );
 916 #else
 917         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 918                 l.sl_url.bv_val, 0, 0 );
 919 #endif
 920         return 0;
 921 }
 922
 923 static int sockinit(void);
 924 static int sockdestroy(void);
 925
 926 int slapd_daemon_init( const char *urls )
 927 {
 928         int i, j, n, rc;
 929         char **u;
 930
 931 #ifdef NEW_LOGGING
 932         LDAP_LOG( CONNECTION, ARGS,
 933                 "slapd_daemon_init: %s\n", urls ? urls : "<null>", 0, 0 );
 934 #else
 935         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 936                 urls ? urls : "<null>", 0, 0 );
 937 #endif
 938         if( (rc = sockinit()) != 0 ) {
 939                 return rc;
 940         }
 941
 942 #ifdef HAVE_SYSCONF
 943         dtblsize = sysconf( _SC_OPEN_MAX );
 944 #elif HAVE_GETDTABLESIZE
 945         dtblsize = getdtablesize();
 946 #else
 947         dtblsize = FD_SETSIZE;
 948 #endif
 949
 950 #ifdef FD_SETSIZE
 951         if(dtblsize > FD_SETSIZE) {
 952                 dtblsize = FD_SETSIZE;
 953         }
 954 #endif  /* !FD_SETSIZE */
 955
 956         /* open a pipe (or something equivalent connected to itself).
 957          * we write a byte on this fd whenever we catch a signal. The main
 958          * loop will be select'ing on this socket, and will wake up when
 959          * this byte arrives.
 960          */
 961         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 962 #ifdef NEW_LOGGING
 963                 LDAP_LOG( CONNECTION, ERR,
 964                         "slap_daemon_init: lutil_pair() failed rc=%d\n", rc, 0, 0);
 965 #else
 966                 Debug( LDAP_DEBUG_ANY,
 967                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 968 #endif
 969                 return rc;
 970         }
 971
 972         FD_ZERO( &slap_daemon.sd_readers );
 973         FD_ZERO( &slap_daemon.sd_writers );
 974
 975         if( urls == NULL ) {
 976                 urls = "ldap:///";
 977         }
 978
 979         u = ldap_str2charray( urls, " " );
 980
 981         if( u == NULL || u[0] == NULL ) {
 982 #ifdef NEW_LOGGING
 983                 LDAP_LOG( CONNECTION, ERR,
 984                         "slap_daemon_init: no urls (%s) provided.\n", urls, 0, 0 );
 985 #else
 986                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
 987                         urls, 0, 0 );
 988 #endif
 989                 return -1;
 990         }
 991
 992         for( i=0; u[i] != NULL; i++ ) {
 993 #ifdef NEW_LOGGING
 994                 LDAP_LOG( CONNECTION, DETAIL1,
 995                         "slap_daemon_init: listen on %s\n.", u[i], 0, 0 );
 996 #else
 997                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
 998                         u[i], 0, 0 );
 999 #endif
1000         }
1001
1002         if( i == 0 ) {
1003 #ifdef NEW_LOGGING
1004                 LDAP_LOG( CONNECTION, INFO,
1005                          "slap_daemon_init: no listeners to open (%s)\n", urls, 0, 0 );
1006 #else
1007                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1008                         urls, 0, 0 );
1009 #endif
1010                 ldap_charray_free( u );
1011                 return -1;
1012         }
1013
1014 #ifdef NEW_LOGGING
1015         LDAP_LOG( CONNECTION, INFO,
1016                 "slap_daemon_init: %d listeners to open...\n", i, 0, 0 );
1017 #else
1018         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1019                 i, 0, 0 );
1020 #endif
1021         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1022
1023         for(n = 0, j = 0; u[n]; n++ ) {
1024                 if ( slap_open_listener( u[n], &i, &j ) ) {
1025                         ldap_charray_free( u );
1026                         return -1;
1027                 }
1028         }
1029         slap_listeners[j] = NULL;
1030
1031 #ifdef NEW_LOGGING
1032         LDAP_LOG( CONNECTION, DETAIL1,
1033                 "slap_daemon_init: %d listeners opened\n", i, 0, 0 );
1034 #else
1035         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1036                 i, 0, 0 );
1037 #endif
1038
1039 #ifdef HAVE_SLP
1040         slapd_slp_init( urls );
1041         slapd_slp_reg();
1042 #endif
1043
1044         ldap_charray_free( u );
1045         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1046         return !i;
1047 }
1048
1049
1050 int
1051 slapd_daemon_destroy(void)
1052 {
1053         connections_destroy();
1054         tcp_close( wake_sds[1] );
1055         tcp_close( wake_sds[0] );
1056         sockdestroy();
1057
1058 #ifdef HAVE_SLP
1059         slapd_slp_dereg();
1060         slapd_slp_deinit();
1061 #endif
1062
1063         return 0;
1064 }
1065
1066
1067 static void
1068 close_listeners(
1069         int remove
1070 )
1071 {
1072         int l;
1073
1074         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1075                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1076                         if ( remove )
1077                                 slapd_remove( slap_listeners[l]->sl_sd, 0 );
1078 #ifdef LDAP_PF_LOCAL
1079                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1080                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1081                         }
1082 #endif /* LDAP_PF_LOCAL */
1083                         slapd_close( slap_listeners[l]->sl_sd );
1084                 }
1085                 if ( slap_listeners[l]->sl_url.bv_val )
1086                         ber_memfree( slap_listeners[l]->sl_url.bv_val );
1087                 if ( slap_listeners[l]->sl_name.bv_val )
1088                         ber_memfree( slap_listeners[l]->sl_name.bv_val );
1089                 free ( slap_listeners[l] );
1090                 slap_listeners[l] = NULL;
1091         }
1092 }
1093
1094
1095 static void *
1096 slapd_daemon_task(
1097         void *ptr
1098 )
1099 {
1100         int l;
1101         time_t  last_idle_check = 0;
1102         time( &starttime );
1103
1104         if ( global_idletimeout > 0 ) {
1105                 last_idle_check = slap_get_time();
1106         }
1107         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1108                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1109                         continue;
1110 #ifdef LDAP_CONNECTIONLESS
1111                 /* Since this is connectionless, the data port is the
1112                  * listening port. The listen() and accept() calls
1113                  * are unnecessary.
1114                  */
1115                 if ( slap_listeners[l]->sl_is_udp ) {
1116                         slapd_add( slap_listeners[l]->sl_sd );
1117                         continue;
1118                 }
1119 #endif
1120
1121                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
1122                         int err = sock_errno();
1123
1124 #ifdef LDAP_PF_INET6
1125                         /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1126                          * we are already listening to in6addr_any, then we want to ignore
1127                          * this and continue.
1128                          */
1129                         if ( err == EADDRINUSE ) {
1130                                 int i;
1131                                 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1132                                 struct sockaddr_in6 sa6;
1133
1134                                 if ( sa.sin_family == AF_INET &&
1135                                      sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1136                                         for ( i = 0 ; i < l; i++ ) {
1137                                                 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1138                                                 if ( sa6.sin6_family == AF_INET6 &&
1139                                                      !memcmp( &sa6.sin6_addr, &in6addr_any, sizeof(struct in6_addr) ) )
1140                                                         break;
1141                                         }
1142
1143                                         if ( i < l ) {
1144                                                 /* We are already listening to in6addr_any */
1145 #ifdef NEW_LOGGING
1146                                                 LDAP_LOG(CONNECTION, WARNING,
1147                                                            "slapd_daemon_task: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n", 0, 0, 0 );
1148 #else
1149                                                 Debug( LDAP_DEBUG_CONNS,
1150                                                        "daemon: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n",
1151                                                        0, 0, 0 );
1152 #endif
1153                                                 slapd_close( slap_listeners[l]->sl_sd );
1154                                                 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1155                                                 continue;
1156                                         }
1157                                 }
1158                         }
1159 #endif
1160 #ifdef NEW_LOGGING
1161                         LDAP_LOG( CONNECTION, ERR,
1162                                 "slapd_daemon_task: listen( %s, 5 ) failed errno=%d (%s)\n",
1163                                 slap_listeners[l]->sl_url.bv_val, err, sock_errstr(err) );
1164 #else
1165                         Debug( LDAP_DEBUG_ANY,
1166                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1167                                         slap_listeners[l]->sl_url.bv_val, err,
1168                                         sock_errstr(err) );
1169 #endif
1170                         return( (void*)-1 );
1171                 }
1172
1173                 slapd_add( slap_listeners[l]->sl_sd );
1174         }
1175
1176 #ifdef HAVE_NT_SERVICE_MANAGER
1177         if ( started_event != NULL ) {
1178                 ldap_pvt_thread_cond_signal( &started_event );
1179         }
1180 #endif
1181         /* initialization complete. Here comes the loop. */
1182
1183         while ( !slapd_shutdown ) {
1184                 ber_socket_t i;
1185                 int ns;
1186                 int at;
1187                 ber_socket_t nfds;
1188 #define SLAPD_EBADF_LIMIT 16
1189                 int ebadf = 0;
1190                 int emfile = 0;
1191
1192 #define SLAPD_IDLE_CHECK_LIMIT 4
1193                 time_t  now;
1194
1195
1196                 fd_set                  readfds;
1197                 fd_set                  writefds;
1198                 Sockaddr                from;
1199
1200 #if defined(SLAPD_RLOOKUPS)
1201                 struct hostent          *hp;
1202 #endif
1203                 struct timeval          zero;
1204                 struct timeval          *tvp;
1205
1206                 if( emfile ) {
1207                         now = slap_get_time();
1208                         connections_timeout_idle( now );
1209                 }
1210                 else if ( global_idletimeout > 0 ) {
1211                         now = slap_get_time();
1212                         if ( difftime( last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1213                                 connections_timeout_idle( now );
1214                         }
1215                 }
1216
1217 #ifdef SIGHUP
1218                 if( slapd_gentle_shutdown ) {
1219                         ber_socket_t active;
1220
1221                         if( slapd_gentle_shutdown == 1 ) {
1222                                 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1223                                 close_listeners( 1 );
1224                                 global_restrictops |= SLAP_RESTRICT_OP_WRITES;
1225                                 slapd_gentle_shutdown = 2;
1226                         }
1227
1228                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1229                         active = slap_daemon.sd_nactives;
1230                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1231                         if( active == 0 ) {
1232                                 slapd_shutdown = 2;
1233                                 break;
1234                         }
1235                 }
1236 #endif
1237
1238                 FD_ZERO( &writefds );
1239                 FD_ZERO( &readfds );
1240
1241                 zero.tv_sec = 0;
1242                 zero.tv_usec = 0;
1243
1244                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1245
1246 #ifdef FD_SET_MANUAL_COPY
1247                 for( s = 0; s < nfds; s++ ) {
1248                         if(FD_ISSET( &slap_sd_readers, s )) {
1249                                 FD_SET( s, &readfds );
1250                         }
1251                         if(FD_ISSET( &slap_sd_writers, s )) {
1252                                 FD_SET( s, &writefds );
1253                         }
1254                 }
1255 #else
1256                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
1257                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
1258 #endif
1259                 assert(!FD_ISSET(wake_sds[0], &readfds));
1260                 FD_SET( wake_sds[0], &readfds );
1261
1262                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1263                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1264                                 continue;
1265                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
1266                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
1267                 }
1268
1269 #ifndef HAVE_WINSOCK
1270                 nfds = slap_daemon.sd_nfds;
1271 #else
1272                 nfds = dtblsize;
1273 #endif
1274
1275                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1276
1277                 at = ldap_pvt_thread_pool_backload(&connection_pool);
1278
1279 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
1280                 tvp = NULL;
1281 #else
1282                 tvp = at ? &zero : NULL;
1283 #endif
1284
1285                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1286                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1287                                 continue;
1288
1289 #ifdef NEW_LOGGING
1290                         LDAP_LOG( CONNECTION, DETAIL1,
1291                                 "slapd_daemon_task: select: listen=%d "
1292                                 "active_threads=%d tvp=%s\n",
1293                                 slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
1294 #else
1295                         Debug( LDAP_DEBUG_CONNS,
1296                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1297                                         slap_listeners[l]->sl_sd, at,
1298                                         tvp == NULL ? "NULL" : "zero" );
1299 #endif
1300                 }
1301
1302                 switch(ns = select( nfds, &readfds,
1303 #ifdef HAVE_WINSOCK
1304                         /* don't pass empty fd_set */
1305                         ( writefds.fd_count > 0 ? &writefds : NULL ),
1306 #else
1307                         &writefds,
1308 #endif
1309                         NULL, tvp ))
1310                 {
1311                 case -1: {      /* failure - try again */
1312                                 int err = sock_errno();
1313
1314                                 if( err == EBADF
1315 #ifdef WSAENOTSOCK
1316                                         /* you'd think this would be EBADF */
1317                                         || err == WSAENOTSOCK
1318 #endif
1319                                 ) {
1320                                         if (++ebadf < SLAPD_EBADF_LIMIT)
1321                                                 continue;
1322                                 }
1323
1324                                 if( err != EINTR ) {
1325 #ifdef NEW_LOGGING
1326                                         LDAP_LOG( CONNECTION, INFO,
1327                                                 "slapd_daemon_task: select failed (%d): %s\n",
1328                                                 err, sock_errstr(err), 0 );
1329 #else
1330                                         Debug( LDAP_DEBUG_CONNS,
1331                                                 "daemon: select failed (%d): %s\n",
1332                                                 err, sock_errstr(err), 0 );
1333 #endif
1334                                         slapd_shutdown = 2;
1335                                 }
1336                         }
1337                         continue;
1338
1339                 case 0:         /* timeout - let threads run */
1340                         ebadf = 0;
1341 #ifdef NEW_LOGGING
1342                         LDAP_LOG( CONNECTION, DETAIL2,
1343                                    "slapd_daemon_task: select timeout - yielding\n", 0, 0, 0 );
1344 #else
1345                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1346                             0, 0, 0 );
1347 #endif
1348                         ldap_pvt_thread_yield();
1349                         continue;
1350
1351                 default:        /* something happened - deal with it */
1352                         if( slapd_shutdown ) continue;
1353
1354                         ebadf = 0;
1355 #ifdef NEW_LOGGING
1356                         LDAP_LOG( CONNECTION, DETAIL2,
1357                                    "slapd_daemon_task: activity on %d descriptors\n", ns, 0, 0 );
1358 #else
1359                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
1360                                 ns, 0, 0 );
1361 #endif
1362                         /* FALL THRU */
1363                 }
1364
1365                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
1366                         char c[BUFSIZ];
1367                         tcp_read( wake_sds[0], c, sizeof(c) );
1368 #if defined(NO_THREADS) || defined(HAVE_GNU_PTH)
1369                         waking = 0;
1370 #endif
1371                         continue;
1372                 }
1373
1374                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1375                         ber_socket_t s;
1376                         socklen_t len = sizeof(from);
1377                         long id;
1378                         slap_ssf_t ssf = 0;
1379                         char *authid = NULL;
1380
1381                         char    *dnsname = NULL;
1382                         char    *peeraddr = NULL;
1383 #ifdef LDAP_PF_LOCAL
1384                         char    peername[MAXPATHLEN + sizeof("PATH=")];
1385 #elif defined(LDAP_PF_INET6)
1386                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1387 #else
1388                         char    peername[sizeof("IP=255.255.255.255:65336")];
1389 #endif /* LDAP_PF_LOCAL */
1390
1391                         peername[0] = '\0';
1392
1393                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1394                                 continue;
1395
1396                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
1397                                 continue;
1398
1399 #ifdef LDAP_CONNECTIONLESS
1400                         if ( slap_listeners[l]->sl_is_udp ) {
1401                                 /* The first time we receive a query, we set this
1402                                  * up as a "connection". It remains open for the life
1403                                  * of the slapd.
1404                                  */
1405                                 if ( slap_listeners[l]->sl_is_udp < 2 ) {
1406                                     id = connection_init(
1407                                         slap_listeners[l]->sl_sd,
1408                                         slap_listeners[l], "", "",
1409                                         2, ssf, authid );
1410                                     slap_listeners[l]->sl_is_udp++;
1411                                 }
1412                                 continue;
1413                         }
1414 #endif
1415
1416                         s = accept( slap_listeners[l]->sl_sd,
1417                                 (struct sockaddr *) &from, &len );
1418                         if ( s == AC_SOCKET_INVALID ) {
1419                                 int err = sock_errno();
1420
1421 #ifdef EMFILE
1422                                 if( err == EMFILE ) {
1423                                         emfile++;
1424                                 } else
1425 #endif
1426 #ifdef ENFILE
1427                                 if( err == ENFILE ) {
1428                                         emfile++;
1429                                 } else
1430 #endif
1431                                 {
1432                                         emfile=0;
1433                                 }
1434
1435                                 if( emfile < 3 ) {
1436 #ifdef NEW_LOGGING
1437                                         LDAP_LOG( CONNECTION, ERR,
1438                                                 "slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
1439                                                 (long)slap_listeners[l]->sl_sd,
1440                                                 err, sock_errstr(err) );
1441 #else
1442                                         Debug( LDAP_DEBUG_ANY,
1443                                             "daemon: accept(%ld) failed errno=%d (%s)\n",
1444                                             (long) slap_listeners[l]->sl_sd, err,
1445                                             sock_errstr(err) );
1446 #endif
1447                                 } else {
1448                                         /* prevent busy loop */
1449 #  ifdef HAVE_USLEEP
1450                                         if( emfile % 4 == 3 ) usleep( 250 );
1451 #  else
1452                                         if( emfile % 8 == 7 ) sleep( 1 );
1453 #  endif
1454                                 }
1455
1456                                 ldap_pvt_thread_yield();
1457                                 continue;
1458                         }
1459                         emfile = 0;
1460
1461 #ifndef HAVE_WINSOCK
1462                         /* make sure descriptor number isn't too great */
1463                         if ( s >= dtblsize ) {
1464 #ifdef NEW_LOGGING
1465                                 LDAP_LOG( CONNECTION, ERR,
1466                                    "slapd_daemon_task: %ld beyond descriptor table size %ld\n",
1467                                    (long)s, (long)dtblsize, 0 );
1468 #else
1469                                 Debug( LDAP_DEBUG_ANY,
1470                                         "daemon: %ld beyond descriptor table size %ld\n",
1471                                         (long) s, (long) dtblsize, 0 );
1472 #endif
1473
1474                                 slapd_close(s);
1475                                 ldap_pvt_thread_yield();
1476                                 continue;
1477                         }
1478 #endif
1479
1480 #ifdef LDAP_DEBUG
1481                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1482
1483                         /* newly accepted stream should not be in any of the FD SETS */
1484                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
1485                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
1486                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
1487
1488                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1489 #endif
1490
1491 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1492 #ifdef LDAP_PF_LOCAL
1493                         /* for IPv4 and IPv6 sockets only */
1494                         if ( from.sa_addr.sa_family != AF_LOCAL )
1495 #endif /* LDAP_PF_LOCAL */
1496                         {
1497                                 int rc;
1498                                 int tmp;
1499 #ifdef SO_KEEPALIVE
1500                                 /* enable keep alives */
1501                                 tmp = 1;
1502                                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1503                                         (char *) &tmp, sizeof(tmp) );
1504                                 if ( rc == AC_SOCKET_ERROR ) {
1505                                         int err = sock_errno();
1506 #ifdef NEW_LOGGING
1507                                         LDAP_LOG( CONNECTION, ERR,
1508                                                 "slapd_daemon_task: setsockopt( %ld, SO_KEEPALIVE)"
1509                                            " failed errno=%d (%s)\n",
1510                                                 (long)s, err, sock_errstr(err) );
1511 #else
1512                                         Debug( LDAP_DEBUG_ANY,
1513                                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1514                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1515 #endif
1516                                 }
1517 #endif
1518 #ifdef TCP_NODELAY
1519                                 /* enable no delay */
1520                                 tmp = 1;
1521                                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1522                                         (char *)&tmp, sizeof(tmp) );
1523                                 if ( rc == AC_SOCKET_ERROR ) {
1524                                         int err = sock_errno();
1525 #ifdef NEW_LOGGING
1526                                         LDAP_LOG( CONNECTION, ERR,
1527                                                 "slapd_daemon_task: setsockopt( %ld, "
1528                                                 "TCP_NODELAY) failed errno=%d (%s)\n",
1529                                                 (long)s, err, sock_errstr(err) );
1530 #else
1531                                         Debug( LDAP_DEBUG_ANY,
1532                                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1533                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1534 #endif
1535                                 }
1536 #endif
1537                         }
1538 #endif
1539
1540 #ifdef NEW_LOGGING
1541                         LDAP_LOG( CONNECTION, DETAIL1,
1542                                 "slapd_daemon_task: new connection on %ld\n", (long)s, 0, 0 );
1543 #else
1544                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
1545                                 (long) s, 0, 0 );
1546 #endif
1547                         switch ( from.sa_addr.sa_family ) {
1548 #  ifdef LDAP_PF_LOCAL
1549                         case AF_LOCAL:
1550                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1551                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
1552                                 dnsname = "local";
1553                                 break;
1554 #endif /* LDAP_PF_LOCAL */
1555
1556 #  ifdef LDAP_PF_INET6
1557                         case AF_INET6:
1558                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1559                                 peeraddr = inet_ntoa( *((struct in_addr *)
1560                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1561                                 sprintf( peername, "IP=%s:%d",
1562                                          peeraddr != NULL ? peeraddr : "unknown",
1563                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1564                         } else {
1565                                 char addr[INET6_ADDRSTRLEN];
1566
1567                                 peeraddr = (char *) inet_ntop( AF_INET6,
1568                                                       &from.sa_in6_addr.sin6_addr,
1569                                                       addr, sizeof addr );
1570                                 sprintf( peername, "IP=%s %d",
1571                                          peeraddr != NULL ? peeraddr : "unknown",
1572                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1573                         }
1574                         break;
1575 #  endif /* LDAP_PF_INET6 */
1576
1577                         case AF_INET:
1578                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1579                         sprintf( peername, "IP=%s:%d",
1580                                 peeraddr != NULL ? peeraddr : "unknown",
1581                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1582                                 break;
1583
1584                         default:
1585                                 slapd_close(s);
1586                                 continue;
1587                         }
1588
1589                         if ( ( from.sa_addr.sa_family == AF_INET )
1590 #ifdef LDAP_PF_INET6
1591                                 || ( from.sa_addr.sa_family == AF_INET6 )
1592 #endif
1593                         ) {
1594 #ifdef SLAPD_RLOOKUPS
1595                                 if ( use_reverse_lookup ) {
1596 #  ifdef LDAP_PF_INET6
1597                                         if ( from.sa_addr.sa_family == AF_INET6 )
1598                                                 hp = gethostbyaddr(
1599                                                         (char *)&(from.sa_in6_addr.sin6_addr),
1600                                                         sizeof(from.sa_in6_addr.sin6_addr),
1601                                                         AF_INET6 );
1602                                         else
1603 #  endif /* LDAP_PF_INET6 */
1604                                         hp = gethostbyaddr(
1605                                                 (char *) &(from.sa_in_addr.sin_addr),
1606                                                 sizeof(from.sa_in_addr.sin_addr),
1607                                                 AF_INET );
1608                                         dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
1609                                 }
1610 #else
1611                                 dnsname = NULL;
1612 #endif /* SLAPD_RLOOKUPS */
1613
1614 #ifdef HAVE_TCPD
1615                                 if ( !hosts_ctl("slapd",
1616                                                 dnsname != NULL ? dnsname : STRING_UNKNOWN,
1617                                                 peeraddr != NULL ? peeraddr : STRING_UNKNOWN,
1618                                                 STRING_UNKNOWN ))
1619                                 {
1620                                         /* DENY ACCESS */
1621                                         Statslog( LDAP_DEBUG_ANY,
1622                                                 "fd=%ld host access from %s (%s) denied.\n",
1623                                                 (long) s,
1624                                                 dnsname != NULL ? dnsname : "unknown",
1625                                                 peeraddr != NULL ? peeraddr : "unknown",
1626                                                 0, 0 );
1627                                         slapd_close(s);
1628                                         continue;
1629                                 }
1630 #endif /* HAVE_TCPD */
1631                         }
1632
1633                         id = connection_init(s,
1634                                 slap_listeners[l],
1635                                 dnsname != NULL ? dnsname : "unknown",
1636                                 peername,
1637 #ifdef HAVE_TLS
1638                                 slap_listeners[l]->sl_is_tls,
1639 #else
1640                                 0,
1641 #endif
1642                                 ssf,
1643                                 authid );
1644
1645                         if( authid ) ch_free(authid);
1646
1647                         if( id < 0 ) {
1648 #ifdef NEW_LOGGING
1649                                 LDAP_LOG( CONNECTION, INFO,
1650                                         "slapd_daemon_task: "
1651                                         "connection_init(%ld, %s, %s) "
1652                                         "failed.\n",
1653                                         (long)s, peername,
1654                                         slap_listeners[l]->sl_name.bv_val );
1655 #else
1656                                 Debug( LDAP_DEBUG_ANY,
1657                                         "daemon: connection_init(%ld, %s, %s) "
1658                                         "failed.\n",
1659                                         (long) s,
1660                                         peername,
1661                                         slap_listeners[l]->sl_name.bv_val );
1662 #endif
1663                                 slapd_close(s);
1664                                 continue;
1665                         }
1666
1667                         Statslog( LDAP_DEBUG_STATS,
1668                                 "daemon: conn=%ld fd=%ld connection from %s "
1669                                 "(%s) accepted.\n",
1670                                 id, (long) s,
1671                                 peername,
1672                                 slap_listeners[l]->sl_name.bv_val,
1673                                 0 );
1674
1675                         slapd_add( s );
1676                         continue;
1677                 }
1678
1679 #ifdef LDAP_DEBUG
1680 #ifdef NEW_LOGGING
1681                 LDAP_LOG( CONNECTION, DETAIL2,
1682                            "slapd_daemon_task: activity on ", 0, 0, 0 );
1683 #else
1684                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1685 #endif
1686 #ifdef HAVE_WINSOCK
1687                 for ( i = 0; i < readfds.fd_count; i++ ) {
1688 #ifdef NEW_LOGGING
1689                         LDAP_LOG( CONNECTION, DETAIL2,
1690                                 " %d%s", readfds.fd_array[i], "r", 0, 0 );
1691 #else
1692                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1693                                 readfds.fd_array[i], "r", 0 );
1694 #endif
1695                 }
1696                 for ( i = 0; i < writefds.fd_count; i++ ) {
1697 #ifdef NEW_LOGGING
1698                         LDAP_LOG( CONNECTION, DETAIL2,
1699                                 " %d%s", writefds.fd_array[i], "w" , 0 );
1700 #else
1701                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1702                                 writefds.fd_array[i], "w", 0 );
1703 #endif
1704                 }
1705
1706 #else
1707                 for ( i = 0; i < nfds; i++ ) {
1708                         int     r, w;
1709                         int     is_listener = 0;
1710
1711                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1712                                 if ( i == slap_listeners[l]->sl_sd ) {
1713 #ifdef LDAP_CONNECTIONLESS
1714                                 /* The listener is the data port. Don't
1715                                  * skip it.
1716                                  */
1717                                         if (slap_listeners[l]->sl_is_udp) continue;
1718 #endif
1719                                         is_listener = 1;
1720                                         break;
1721                                 }
1722                         }
1723                         if ( is_listener ) {
1724                                 continue;
1725                         }
1726                         r = FD_ISSET( i, &readfds );
1727                         w = FD_ISSET( i, &writefds );
1728                         if ( r || w ) {
1729 #ifdef NEW_LOGGING
1730                                 LDAP_LOG( CONNECTION, DETAIL2,
1731                                         " %d%s%s", i, r ? "r" : "", w ? "w" : "" );
1732 #else
1733                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1734                                     r ? "r" : "", w ? "w" : "" );
1735 #endif
1736                         }
1737                 }
1738 #endif
1739 #ifdef NEW_LOGGING
1740                 LDAP_LOG( CONNECTION, DETAIL2, "\n", 0, 0, 0 );
1741 #else
1742                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1743 #endif
1744
1745 #endif
1746
1747                 /* loop through the writers */
1748 #ifdef HAVE_WINSOCK
1749                 for ( i = 0; i < writefds.fd_count; i++ )
1750 #else
1751                 for ( i = 0; i < nfds; i++ )
1752 #endif
1753                 {
1754                         ber_socket_t wd;
1755                         int is_listener = 0;
1756 #ifdef HAVE_WINSOCK
1757                         wd = writefds.fd_array[i];
1758 #else
1759                         if( ! FD_ISSET( i, &writefds ) ) {
1760                                 continue;
1761                         }
1762                         wd = i;
1763 #endif
1764
1765                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1766                                 if ( i == slap_listeners[l]->sl_sd ) {
1767 #ifdef LDAP_CONNECTIONLESS
1768                                         if (slap_listeners[l]->sl_is_udp) continue;
1769 #endif
1770                                         is_listener = 1;
1771                                         break;
1772                                 }
1773                         }
1774                         if ( is_listener ) {
1775                                 continue;
1776                         }
1777 #ifdef NEW_LOGGING
1778                         LDAP_LOG( CONNECTION, DETAIL2,
1779                                 "slapd_daemon_task: write active on %d\n", wd, 0, 0 );
1780 #else
1781                         Debug( LDAP_DEBUG_CONNS,
1782                                 "daemon: write active on %d\n",
1783                                 wd, 0, 0 );
1784 #endif
1785                         /*
1786                          * NOTE: it is possible that the connection was closed
1787                          * and that the stream is now inactive.
1788                          * connection_write() must valid the stream is still
1789                          * active.
1790                          */
1791
1792                         if ( connection_write( wd ) < 0 ) {
1793                                 FD_CLR( (unsigned) wd, &readfds );
1794                                 slapd_close( wd );
1795                         }
1796                 }
1797
1798 #ifdef HAVE_WINSOCK
1799                 for ( i = 0; i < readfds.fd_count; i++ )
1800 #else
1801                 for ( i = 0; i < nfds; i++ )
1802 #endif
1803                 {
1804                         ber_socket_t rd;
1805                         int is_listener = 0;
1806
1807 #ifdef HAVE_WINSOCK
1808                         rd = readfds.fd_array[i];
1809 #else
1810                         if( ! FD_ISSET( i, &readfds ) ) {
1811                                 continue;
1812                         }
1813                         rd = i;
1814 #endif
1815
1816                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1817                                 if ( rd == slap_listeners[l]->sl_sd ) {
1818 #ifdef LDAP_CONNECTIONLESS
1819                                         if (slap_listeners[l]->sl_is_udp) continue;
1820 #endif
1821                                         is_listener = 1;
1822                                         break;
1823                                 }
1824                         }
1825                         if ( is_listener ) {
1826                                 continue;
1827                         }
1828
1829 #ifdef NEW_LOGGING
1830                         LDAP_LOG( CONNECTION, DETAIL2,
1831                                 "slapd_daemon_task: read activity on %d\n", rd, 0, 0 );
1832 #else
1833                         Debug ( LDAP_DEBUG_CONNS,
1834                                 "daemon: read activity on %d\n", rd, 0, 0 );
1835 #endif
1836                         /*
1837                          * NOTE: it is possible that the connection was closed
1838                          * and that the stream is now inactive.
1839                          * connection_read() must valid the stream is still
1840                          * active.
1841                          */
1842
1843                         if ( connection_read( rd ) < 0 ) {
1844                                 slapd_close( rd );
1845                         }
1846                 }
1847                 ldap_pvt_thread_yield();
1848         }
1849
1850         if( slapd_shutdown == 1 ) {
1851 #ifdef NEW_LOGGING
1852                 LDAP_LOG( CONNECTION, CRIT,
1853                    "slapd_daemon_task: shutdown requested and initiated.\n", 0, 0, 0 );
1854 #else
1855                 Debug( LDAP_DEBUG_TRACE,
1856                         "daemon: shutdown requested and initiated.\n",
1857                         0, 0, 0 );
1858 #endif
1859
1860         } else if ( slapd_shutdown == 2 ) {
1861 #ifdef HAVE_NT_SERVICE_MANAGER
1862 #ifdef NEW_LOGGING
1863                         LDAP_LOG( CONNECTION, CRIT,
1864                            "slapd_daemon_task: shutdown initiated by Service Manager.\n",
1865                            0, 0, 0);
1866 #else
1867                         Debug( LDAP_DEBUG_TRACE,
1868                                "daemon: shutdown initiated by Service Manager.\n",
1869                                0, 0, 0);
1870 #endif
1871 #else /* !HAVE_NT_SERVICE_MANAGER */
1872 #ifdef NEW_LOGGING
1873                         LDAP_LOG( CONNECTION, CRIT,
1874                            "slapd_daemon_task: abnormal condition, "
1875                            "shutdown initiated.\n", 0, 0, 0 );
1876 #else
1877                         Debug( LDAP_DEBUG_TRACE,
1878                                "daemon: abnormal condition, shutdown initiated.\n",
1879                                0, 0, 0 );
1880 #endif
1881 #endif /* !HAVE_NT_SERVICE_MANAGER */
1882         } else {
1883 #ifdef NEW_LOGGING
1884                 LDAP_LOG( CONNECTION, CRIT,
1885                    "slapd_daemon_task: no active streams, shutdown initiated.\n",
1886                    0, 0, 0 );
1887 #else
1888                 Debug( LDAP_DEBUG_TRACE,
1889                        "daemon: no active streams, shutdown initiated.\n",
1890                        0, 0, 0 );
1891 #endif
1892         }
1893
1894         if( slapd_gentle_shutdown != 2 )
1895                 close_listeners ( 0 );
1896         free ( slap_listeners );
1897         slap_listeners = NULL;
1898
1899 #ifdef NEW_LOGGING
1900         LDAP_LOG( CONNECTION, CRIT,
1901                 "slapd_daemon_task: shutdown waiting for %d threads to terminate.\n",
1902                 ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1903 #else
1904         Debug( LDAP_DEBUG_ANY,
1905             "slapd shutdown: waiting for %d threads to terminate\n",
1906             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1907 #endif
1908         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1909
1910         return NULL;
1911 }
1912
1913
1914 int slapd_daemon( void )
1915 {
1916         int rc;
1917
1918         connections_init();
1919
1920 #define SLAPD_LISTENER_THREAD 1
1921 #if defined( SLAPD_LISTENER_THREAD )
1922         {
1923                 ldap_pvt_thread_t       listener_tid;
1924
1925                 /* listener as a separate THREAD */
1926                 rc = ldap_pvt_thread_create( &listener_tid,
1927                         0, slapd_daemon_task, NULL );
1928
1929                 if ( rc != 0 ) {
1930 #ifdef NEW_LOGGING
1931                         LDAP_LOG( CONNECTION, ERR,
1932                                 "slapd_daemon: listener ldap_pvt_thread_create failed (%d).\n",
1933                                 rc, 0, 0 );
1934 #else
1935                         Debug( LDAP_DEBUG_ANY,
1936                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
1937 #endif
1938                         return rc;
1939                 }
1940
1941                 /* wait for the listener thread to complete */
1942                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
1943         }
1944 #else
1945         /* experimental code */
1946         slapd_daemon_task( NULL );
1947 #endif
1948
1949         return 0;
1950
1951 }
1952
1953 int sockinit(void)
1954 {
1955 #if defined( HAVE_WINSOCK2 )
1956     WORD wVersionRequested;
1957         WSADATA wsaData;
1958         int err;
1959
1960         wVersionRequested = MAKEWORD( 2, 0 );
1961
1962         err = WSAStartup( wVersionRequested, &wsaData );
1963         if ( err != 0 ) {
1964                 /* Tell the user that we couldn't find a usable */
1965                 /* WinSock DLL.                                  */
1966                 return -1;
1967         }
1968
1969         /* Confirm that the WinSock DLL supports 2.0.*/
1970         /* Note that if the DLL supports versions greater    */
1971         /* than 2.0 in addition to 2.0, it will still return */
1972         /* 2.0 in wVersion since that is the version we      */
1973         /* requested.                                        */
1974
1975         if ( LOBYTE( wsaData.wVersion ) != 2 ||
1976                 HIBYTE( wsaData.wVersion ) != 0 )
1977         {
1978             /* Tell the user that we couldn't find a usable */
1979             /* WinSock DLL.                                  */
1980             WSACleanup();
1981             return -1;
1982         }
1983
1984         /* The WinSock DLL is acceptable. Proceed. */
1985 #elif defined( HAVE_WINSOCK )
1986         WSADATA wsaData;
1987         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
1988             return -1;
1989         }
1990 #endif
1991         return 0;
1992 }
1993
1994 int sockdestroy(void)
1995 {
1996 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
1997         WSACleanup();
1998 #endif
1999         return 0;
2000 }
2001
2002 RETSIGTYPE
2003 slap_sig_shutdown( int sig )
2004 {
2005 #ifdef NEW_LOGGING
2006         LDAP_LOG( CONNECTION, CRIT,
2007                 "slap_sig_shutdown: signal %d\n", sig, 0, 0 );
2008 #else
2009         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2010 #endif
2011
2012         /*
2013          * If the NT Service Manager is controlling the server, we don't
2014          * want SIGBREAK to kill the server. For some strange reason,
2015          * SIGBREAK is generated when a user logs out.
2016          */
2017
2018 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2019         if (is_NT_Service && sig == SIGBREAK)
2020 #ifdef NEW_LOGGING
2021             LDAP_LOG( CONNECTION, CRIT,
2022                     "slap_sig_shutdown: SIGBREAK ignored.\n", 0, 0, 0 );
2023 #else
2024             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
2025                   0, 0, 0);
2026 #endif
2027         else
2028 #endif
2029 #ifdef SIGHUP
2030         if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0)
2031                 slapd_gentle_shutdown = 1;
2032         else
2033 #endif
2034         slapd_shutdown = 1;
2035
2036         WAKE_LISTENER(1);
2037
2038         /* reinstall self */
2039         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2040 }
2041
2042 RETSIGTYPE
2043 slap_sig_wake( int sig )
2044 {
2045         WAKE_LISTENER(1);
2046
2047         /* reinstall self */
2048         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2049 }
2050
2051
2052 void slapd_add_internal(ber_socket_t s) {
2053         slapd_add(s);
2054 }
2055
2056 Listener ** slapd_get_listeners(void) {
2057         return slap_listeners;
2058 }