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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2003 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 LDAP_SYNCREPL
  24 #include "ldap_rq.h"
  25 #endif
  26
  27 #ifdef HAVE_TCPD
  28 #include <tcpd.h>
  29 #define SLAP_STRING_UNKNOWN     STRING_UNKNOWN
  30
  31 int allow_severity = LOG_INFO;
  32 int deny_severity = LOG_NOTICE;
  33 #else /* ! TCP Wrappers */
  34 #define SLAP_STRING_UNKNOWN     "unknown"
  35 #endif /* ! TCP Wrappers */
  36
  37 #ifdef LDAP_PF_LOCAL
  38 #include <sys/stat.h>
  39 /* this should go in <ldap.h> as soon as it is accepted */
  40 #define LDAPI_MOD_URLEXT                "x-mod"
  41 #endif /* LDAP_PF_LOCAL */
  42
  43 #ifdef LDAP_PF_INET6
  44 int slap_inet4or6 = AF_UNSPEC;
  45 #else
  46 int slap_inet4or6 = AF_INET;
  47 #endif
  48
  49 /* globals */
  50 time_t starttime;
  51 ber_socket_t dtblsize;
  52
  53 Listener **slap_listeners = NULL;
  54
  55 #define SLAPD_LISTEN 10
  56
  57 static ber_socket_t wake_sds[2];
  58
  59 #if defined(NO_THREADS) || defined(HAVE_GNU_PTH)
  60 static int waking;
  61 #define WAKE_LISTENER(w) \
  62 ((w && !waking) ? tcp_write( wake_sds[1], "0", 1 ), waking=1 : 0)
  63 #else
  64 #define WAKE_LISTENER(w) \
  65 do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0)
  66 #endif
  67
  68 #ifndef HAVE_WINSOCK
  69 static
  70 #endif
  71 volatile sig_atomic_t slapd_shutdown = 0, slapd_gentle_shutdown = 0;
  72
  73 static struct slap_daemon {
  74         ldap_pvt_thread_mutex_t sd_mutex;
  75
  76         ber_socket_t sd_nactives;
  77
  78 #ifndef HAVE_WINSOCK
  79         /* In winsock, accept() returns values higher than dtblsize
  80                 so don't bother with this optimization */
  81         int sd_nfds;
  82 #endif
  83
  84         fd_set sd_actives;
  85         fd_set sd_readers;
  86         fd_set sd_writers;
  87 } slap_daemon;
  88
  89
  90
  91 #ifdef HAVE_SLP
  92 /*
  93  * SLP related functions
  94  */
  95 #include <slp.h>
  96
  97 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
  98 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
  99 static char** slapd_srvurls = NULL;
 100 static SLPHandle slapd_hslp = 0;
 101
 102 void slapd_slp_init( const char* urls ) {
 103         int i;
 104
 105         slapd_srvurls = ldap_str2charray( urls, " " );
 106
 107         if( slapd_srvurls == NULL ) return;
 108
 109         /* find and expand INADDR_ANY URLs */
 110         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 111                 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
 112                         char *host = ldap_pvt_get_fqdn( NULL );
 113                         if ( host != NULL ) {
 114                                 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 115                                         strlen( host ) +
 116                                         sizeof( LDAP_SRVTYPE_PREFIX ) );
 117                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 118                                         LDAP_SRVTYPE_PREFIX ), host );
 119
 120                                 ch_free( host );
 121                         }
 122
 123                 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
 124                         char *host = ldap_pvt_get_fqdn( NULL );
 125                         if ( host != NULL ) {
 126                                 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 127                                         strlen( host ) +
 128                                         sizeof( LDAPS_SRVTYPE_PREFIX ) );
 129                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 130                                         LDAPS_SRVTYPE_PREFIX ), host );
 131
 132                                 ch_free( host );
 133                         }
 134                 }
 135         }
 136
 137         /* open the SLP handle */
 138         SLPOpen( "en", 0, &slapd_hslp );
 139 }
 140
 141 void slapd_slp_deinit() {
 142         if( slapd_srvurls == NULL ) return;
 143
 144         ldap_charray_free( slapd_srvurls );
 145         slapd_srvurls = NULL;
 146
 147         /* close the SLP handle */
 148         SLPClose( slapd_hslp );
 149 }
 150
 151 void slapd_slp_regreport(
 152         SLPHandle hslp,
 153         SLPError errcode,
 154         void* cookie )
 155 {
 156         /* empty report */
 157 }
 158
 159 void slapd_slp_reg() {
 160         int i;
 161
 162         if( slapd_srvurls == NULL ) return;
 163
 164         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 165                 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
 166                                 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
 167                     strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
 168                                 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
 169                 {
 170                         SLPReg( slapd_hslp,
 171                                 slapd_srvurls[i],
 172                                 SLP_LIFETIME_MAXIMUM,
 173                                 "ldap",
 174                                 "",
 175                                 1,
 176                                 slapd_slp_regreport,
 177                                 NULL );
 178                 }
 179         }
 180 }
 181
 182 void slapd_slp_dereg() {
 183         int i;
 184
 185         if( slapd_srvurls == NULL ) return;
 186
 187         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 188                 SLPDereg( slapd_hslp,
 189                         slapd_srvurls[i],
 190                         slapd_slp_regreport,
 191                         NULL );
 192         }
 193 }
 194 #endif /* HAVE_SLP */
 195
 196 /*
 197  * Add a descriptor to daemon control
 198  */
 199 static void slapd_add(ber_socket_t s) {
 200         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 201
 202         assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
 203         assert( !FD_ISSET( s, &slap_daemon.sd_readers ));
 204         assert( !FD_ISSET( s, &slap_daemon.sd_writers ));
 205
 206 #ifndef HAVE_WINSOCK
 207         if (s >= slap_daemon.sd_nfds) {
 208                 slap_daemon.sd_nfds = s + 1;
 209         }
 210 #endif
 211
 212         slap_daemon.sd_nactives++;
 213
 214         FD_SET( s, &slap_daemon.sd_actives );
 215         FD_SET( s, &slap_daemon.sd_readers );
 216
 217 #ifdef NEW_LOGGING
 218         LDAP_LOG( CONNECTION, DETAIL1,
 219                 "slapd_add: added %ld%s%s\n", (long)s,
 220                 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 221                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 222 #else
 223         Debug( LDAP_DEBUG_CONNS, "daemon: added %ld%s%s\n",
 224                 (long) s,
 225             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 226                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 227 #endif
 228         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 229 }
 230
 231 /*
 232  * Remove the descriptor from daemon control
 233  */
 234 void slapd_remove(ber_socket_t s, int wake) {
 235         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 236
 237         slap_daemon.sd_nactives--;
 238
 239 #ifdef NEW_LOGGING
 240         LDAP_LOG( CONNECTION, DETAIL1,
 241                 "slapd_remove: removing %ld%s%s\n", (long) s,
 242                 FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 243                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : ""  );
 244 #else
 245         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 246                 (long) s,
 247             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 248                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 249 #endif
 250         FD_CLR( s, &slap_daemon.sd_actives );
 251         FD_CLR( s, &slap_daemon.sd_readers );
 252         FD_CLR( s, &slap_daemon.sd_writers );
 253
 254         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 255         WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
 256 }
 257
 258 void slapd_clr_write(ber_socket_t s, int wake) {
 259         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 260
 261         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 262         FD_CLR( 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_set_write(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         if (!FD_ISSET(s, &slap_daemon.sd_writers))
 273             FD_SET( (unsigned) s, &slap_daemon.sd_writers );
 274
 275         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 276         WAKE_LISTENER(wake);
 277 }
 278
 279 void slapd_clr_read(ber_socket_t s, int wake) {
 280         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 281
 282         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 283         FD_CLR( s, &slap_daemon.sd_readers );
 284
 285         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 286         WAKE_LISTENER(wake);
 287 }
 288
 289 void slapd_set_read(ber_socket_t s, int wake) {
 290         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 291
 292         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 293         if (!FD_ISSET(s, &slap_daemon.sd_readers))
 294             FD_SET( s, &slap_daemon.sd_readers );
 295
 296         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 297         WAKE_LISTENER(wake);
 298 }
 299
 300 static void slapd_close(ber_socket_t s) {
 301 #ifdef NEW_LOGGING
 302         LDAP_LOG( CONNECTION, DETAIL1, "slapd_close: closing %ld\n", (long)s, 0, 0);
 303 #else
 304         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 305                 (long) s, 0, 0 );
 306 #endif
 307         tcp_close(s);
 308 }
 309
 310 static void slap_free_listener_addresses(struct sockaddr **sal)
 311 {
 312         struct sockaddr **sap;
 313
 314         if (sal == NULL) {
 315                 return;
 316         }
 317
 318         for (sap = sal; *sap != NULL; sap++) {
 319                 ch_free(*sap);
 320         }
 321
 322         ch_free(sal);
 323 }
 324
 325 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 326 static int get_url_perms(
 327         char    **exts,
 328         mode_t  *perms,
 329         int     *crit )
 330 {
 331         int     i;
 332
 333         assert( exts );
 334         assert( perms );
 335         assert( crit );
 336
 337         *crit = 0;
 338         for ( i = 0; exts[ i ]; i++ ) {
 339                 char    *type = exts[ i ];
 340                 int     c = 0;
 341
 342                 if ( type[ 0 ] == '!' ) {
 343                         c = 1;
 344                         type++;
 345                 }
 346
 347                 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=", sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 ) {
 348                         char    *value = type
 349                                 + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
 350                         mode_t  p = 0;
 351                         int     j;
 352
 353                         switch (strlen(value)) {
 354                         case 4:
 355                                 /* skip leading '0' */
 356                                 if ( value[ 0 ] != '0' ) {
 357                                         return LDAP_OTHER;
 358                                 }
 359                                 value++;
 360
 361                         case 3:
 362                                 for ( j = 0; j < 3; j++) {
 363                                         int     v;
 364
 365                                         v = value[ j ] - '0';
 366
 367                                         if ( v < 0 || v > 7 ) {
 368                                                 return LDAP_OTHER;
 369                                         }
 370
 371                                         p |= v << 3*(2-j);
 372                                 }
 373                                 break;
 374
 375                         case 10:
 376                                 for ( j = 1; j < 10; j++ ) {
 377                                         static mode_t   m[] = { 0,
 378                                                 S_IRUSR, S_IWUSR, S_IXUSR,
 379                                                 S_IRGRP, S_IWGRP, S_IXGRP,
 380                                                 S_IROTH, S_IWOTH, S_IXOTH
 381                                         };
 382                                         static char     c[] = "-rwxrwxrwx";
 383
 384                                         if ( value[ j ] == c[ j ] ) {
 385                                                 p |= m[ j ];
 386
 387                                         } else if ( value[ j ] != '-' ) {
 388                                                 return LDAP_OTHER;
 389                                         }
 390                                 }
 391                                 break;
 392
 393                         default:
 394                                 return LDAP_OTHER;
 395                         }
 396
 397                         *crit = c;
 398                         *perms = p;
 399
 400                         return LDAP_SUCCESS;
 401                 }
 402         }
 403
 404         return LDAP_OTHER;
 405 }
 406 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 407
 408 /* port = 0 indicates AF_LOCAL */
 409 static int slap_get_listener_addresses(
 410         const char *host,
 411         unsigned short port,
 412         struct sockaddr ***sal)
 413 {
 414         struct sockaddr **sap;
 415
 416 #ifdef LDAP_PF_LOCAL
 417         if ( port == 0 ) {
 418                 *sal = ch_malloc(2 * sizeof(void *));
 419                 if (*sal == NULL) {
 420                         return -1;
 421                 }
 422
 423                 sap = *sal;
 424                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 425                 if (*sap == NULL)
 426                         goto errexit;
 427                 sap[1] = NULL;
 428
 429                 if ( strlen(host) >
 430                      (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 431 #ifdef NEW_LOGGING
 432                         LDAP_LOG( CONNECTION, INFO,
 433                                 "slap_get_listener_addresses: domain socket path (%s) "
 434                                 "too long in URL\n", host, 0, 0 );
 435 #else
 436                         Debug( LDAP_DEBUG_ANY,
 437                                "daemon: domain socket path (%s) too long in URL",
 438                                host, 0, 0);
 439 #endif
 440                         goto errexit;
 441                 }
 442
 443                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 444                 (*sap)->sa_family = AF_LOCAL;
 445                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 446         } else
 447 #endif
 448         {
 449 #ifdef HAVE_GETADDRINFO
 450                 struct addrinfo hints, *res, *sai;
 451                 int n, err;
 452                 char serv[7];
 453
 454                 memset( &hints, '\0', sizeof(hints) );
 455                 hints.ai_flags = AI_PASSIVE;
 456                 hints.ai_socktype = SOCK_STREAM;
 457                 hints.ai_family = slap_inet4or6;
 458                 snprintf(serv, sizeof serv, "%d", port);
 459
 460                 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
 461 #ifdef NEW_LOGGING
 462                         LDAP_LOG( CONNECTION, INFO,
 463                                    "slap_get_listener_addresses: getaddrinfo failed: %s\n",
 464                                    AC_GAI_STRERROR(err), 0, 0 );
 465 #else
 466                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 467                                 AC_GAI_STRERROR(err), 0, 0);
 468 #endif
 469                         return -1;
 470                 }
 471
 472                 sai = res;
 473                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
 474                         /* EMPTY */ ;
 475                 }
 476                 *sal = ch_calloc(n, sizeof(void *));
 477                 if (*sal == NULL) {
 478                         return -1;
 479                 }
 480
 481                 sap = *sal;
 482                 *sap = NULL;
 483
 484                 for ( sai=res; sai; sai=sai->ai_next ) {
 485                         if( sai->ai_addr == NULL ) {
 486 #ifdef NEW_LOGGING
 487                                 LDAP_LOG( CONNECTION, INFO,
 488                                         "slap_get_listener_addresses: "
 489                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 490 #else
 491                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
 492                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 493 #endif
 494                                 freeaddrinfo(res);
 495                                 goto errexit;
 496                         }
 497
 498                         switch (sai->ai_family) {
 499 #  ifdef LDAP_PF_INET6
 500                         case AF_INET6:
 501                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 502                                 if (*sap == NULL) {
 503                                         freeaddrinfo(res);
 504                                         goto errexit;
 505                                 }
 506                                 *(struct sockaddr_in6 *)*sap =
 507                                         *((struct sockaddr_in6 *)sai->ai_addr);
 508                                 break;
 509 #  endif
 510                         case AF_INET:
 511                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 512                                 if (*sap == NULL) {
 513                                         freeaddrinfo(res);
 514                                         goto errexit;
 515                                 }
 516                                 *(struct sockaddr_in *)*sap =
 517                                         *((struct sockaddr_in *)sai->ai_addr);
 518                                 break;
 519                         default:
 520                                 *sap = NULL;
 521                                 break;
 522                         }
 523
 524                         if (*sap != NULL) {
 525                                 (*sap)->sa_family = sai->ai_family;
 526                                 sap++;
 527                                 *sap = NULL;
 528                         }
 529                 }
 530
 531                 freeaddrinfo(res);
 532 #else
 533                 int i, n = 1;
 534                 struct in_addr in;
 535                 struct hostent *he = NULL;
 536
 537                 if ( host == NULL ) {
 538                         in.s_addr = htonl(INADDR_ANY);
 539
 540                 } else if ( !inet_aton( host, &in ) ) {
 541                         he = gethostbyname( host );
 542                         if( he == NULL ) {
 543 #ifdef NEW_LOGGING
 544                                 LDAP_LOG( CONNECTION, INFO,
 545                                         "slap_get_listener_addresses: invalid host %s\n", host, 0, 0 );
 546 #else
 547                                 Debug( LDAP_DEBUG_ANY,
 548                                        "daemon: invalid host %s", host, 0, 0);
 549 #endif
 550                                 return -1;
 551                         }
 552                         for (n = 0; he->h_addr_list[n]; n++) ;
 553                 }
 554
 555                 *sal = ch_malloc((n+1) * sizeof(void *));
 556                 if (*sal == NULL) {
 557                         return -1;
 558                 }
 559
 560                 sap = *sal;
 561                 for ( i = 0; i<n; i++ ) {
 562                         sap[i] = ch_malloc(sizeof(struct sockaddr_in));
 563                         if (*sap == NULL) {
 564                                 goto errexit;
 565                         }
 566                         (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
 567                         sap[i]->sa_family = AF_INET;
 568                         ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
 569                         if (he) {
 570                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, he->h_addr_list[i], sizeof(struct in_addr) );
 571                         } else {
 572                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, &in, sizeof(struct in_addr) );
 573                         }
 574                 }
 575                 sap[i] = NULL;
 576 #endif
 577         }
 578
 579         return 0;
 580
 581 errexit:
 582         slap_free_listener_addresses(*sal);
 583         return -1;
 584 }
 585
 586 static int slap_open_listener(
 587         const char* url,
 588         int *listeners,
 589         int *cur
 590         )
 591 {
 592         int     num, tmp, rc;
 593         Listener l;
 594         Listener *li;
 595         LDAPURLDesc *lud;
 596         unsigned short port;
 597         int err, addrlen = 0;
 598         struct sockaddr **sal, **psal;
 599         int socktype = SOCK_STREAM;     /* default to COTS */
 600
 601 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 602         /*
 603          * use safe defaults
 604          */
 605         int     crit = 1;
 606 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 607
 608         rc = ldap_url_parse( url, &lud );
 609
 610         if( rc != LDAP_URL_SUCCESS ) {
 611 #ifdef NEW_LOGGING
 612                 LDAP_LOG( CONNECTION, ERR,
 613                         "slap_open_listener: listen URL \"%s\" parse error %d\n",
 614                         url, rc , 0 );
 615 #else
 616                 Debug( LDAP_DEBUG_ANY,
 617                         "daemon: listen URL \"%s\" parse error=%d\n",
 618                         url, rc, 0 );
 619 #endif
 620                 return rc;
 621         }
 622
 623         l.sl_url.bv_val = NULL;
 624
 625 #ifndef HAVE_TLS
 626         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 627 #ifdef NEW_LOGGING
 628                 LDAP_LOG( CONNECTION, INFO,
 629                            "slap_open_listener: TLS is not supported (%s)\n", url, 0, 0 );
 630 #else
 631                 Debug( LDAP_DEBUG_ANY,
 632                         "daemon: TLS not supported (%s)\n",
 633                         url, 0, 0 );
 634 #endif
 635                 ldap_free_urldesc( lud );
 636                 return -1;
 637         }
 638
 639         if(! lud->lud_port ) {
 640                 lud->lud_port = LDAP_PORT;
 641         }
 642
 643 #else
 644         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 645
 646         if(! lud->lud_port ) {
 647                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 648         }
 649 #endif
 650
 651         port = (unsigned short) lud->lud_port;
 652
 653         tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
 654         if ( tmp == LDAP_PROTO_IPC ) {
 655 #ifdef LDAP_PF_LOCAL
 656                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 657                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 658                 } else {
 659                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 660                 }
 661 #else
 662
 663 #ifdef NEW_LOGGING
 664                 LDAP_LOG( CONNECTION, INFO,
 665                         "slap_open_listener: URL scheme is not supported: %s\n", url, 0, 0 );
 666 #else
 667                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 668                         url, 0, 0);
 669 #endif
 670                 ldap_free_urldesc( lud );
 671                 return -1;
 672 #endif
 673         } else {
 674                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 675                         || strcmp(lud->lud_host, "*") == 0 )
 676                 {
 677                         err = slap_get_listener_addresses(NULL, port, &sal);
 678                 } else {
 679                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 680                 }
 681         }
 682 #ifdef LDAP_CONNECTIONLESS
 683         l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
 684 #endif
 685
 686 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 687         if ( lud->lud_exts ) {
 688                 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
 689         } else {
 690                 l.sl_perms = S_IRWXU | S_IRWXO;
 691         }
 692 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 693
 694         ldap_free_urldesc( lud );
 695         if ( err ) {
 696                 return -1;
 697         }
 698
 699         /* If we got more than one address returned, we need to make space
 700          * for it in the slap_listeners array.
 701          */
 702         for ( num=0; sal[num]; num++ );
 703         if ( num > 1 ) {
 704                 *listeners += num-1;
 705                 slap_listeners = ch_realloc( slap_listeners, (*listeners + 1) * sizeof(Listener *) );
 706         }
 707
 708         psal = sal;
 709         while ( *sal != NULL ) {
 710                 switch( (*sal)->sa_family ) {
 711                 case AF_INET:
 712 #ifdef LDAP_PF_INET6
 713                 case AF_INET6:
 714 #endif
 715 #ifdef LDAP_PF_LOCAL
 716                 case AF_LOCAL:
 717 #endif
 718                         break;
 719                 default:
 720                         sal++;
 721                         continue;
 722                 }
 723 #ifdef LDAP_CONNECTIONLESS
 724                 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
 725 #endif
 726                 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
 727                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 728                         int err = sock_errno();
 729 #ifdef NEW_LOGGING
 730                         LDAP_LOG( CONNECTION, ERR,
 731                                 "slap_open_listener: socket() failed errno=%d (%s)\n",
 732                                 err, sock_errstr(err), 0 );
 733 #else
 734                         Debug( LDAP_DEBUG_ANY,
 735                                 "daemon: socket() failed errno=%d (%s)\n", err,
 736                                 sock_errstr(err), 0 );
 737 #endif
 738                         sal++;
 739                         continue;
 740                 }
 741 #ifndef HAVE_WINSOCK
 742                 if ( l.sl_sd >= dtblsize ) {
 743 #ifdef NEW_LOGGING
 744                         LDAP_LOG( CONNECTION, ERR,
 745                                 "slap_open_listener: listener descriptor %ld is too "
 746                                 "great %ld\n", (long)l.sl_sd, (long)dtblsize, 0 );
 747 #else
 748                         Debug( LDAP_DEBUG_ANY,
 749                                "daemon: listener descriptor %ld is too great %ld\n",
 750                                (long) l.sl_sd, (long) dtblsize, 0 );
 751 #endif
 752                         tcp_close( l.sl_sd );
 753                         sal++;
 754                         continue;
 755                 }
 756 #endif
 757 #ifdef LDAP_PF_LOCAL
 758                 if ( (*sal)->sa_family == AF_LOCAL ) {
 759                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 760                 } else
 761 #endif
 762                 {
 763 #ifdef SO_REUSEADDR
 764                         /* enable address reuse */
 765                         tmp = 1;
 766                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 767                                          (char *) &tmp, sizeof(tmp) );
 768                         if ( rc == AC_SOCKET_ERROR ) {
 769                                 int err = sock_errno();
 770 #ifdef NEW_LOGGING
 771                                 LDAP_LOG( CONNECTION, INFO,
 772                                         "slap_open_listener: setsockopt( %ld, SO_REUSEADDR ) "
 773                                         "failed errno %d (%s)\n", (long)l.sl_sd, err,
 774                                         sock_errstr(err) );
 775 #else
 776                                 Debug( LDAP_DEBUG_ANY,
 777                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 778                                        (long) l.sl_sd, err, sock_errstr(err) );
 779 #endif
 780                         }
 781 #endif
 782                 }
 783
 784                 switch( (*sal)->sa_family ) {
 785                 case AF_INET:
 786                         addrlen = sizeof(struct sockaddr_in);
 787                         break;
 788 #ifdef LDAP_PF_INET6
 789                 case AF_INET6:
 790 #ifdef IPV6_V6ONLY
 791                         /* Try to use IPv6 sockets for IPv6 only */
 792                         tmp = 1;
 793                         rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
 794                                          (char *) &tmp, sizeof(tmp) );
 795                         if ( rc == AC_SOCKET_ERROR ) {
 796                                 int err = sock_errno();
 797 #ifdef NEW_LOGGING
 798                                 LDAP_LOG( CONNECTION, INFO,
 799                                            "slap_open_listener: setsockopt( %ld, IPV6_V6ONLY ) failed errno %d (%s)\n",
 800                                            (long)l.sl_sd, err, sock_errstr(err) );
 801 #else
 802                                 Debug( LDAP_DEBUG_ANY,
 803                                        "slapd(%ld): setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
 804                                        (long) l.sl_sd, err, sock_errstr(err) );
 805 #endif
 806                         }
 807 #endif
 808                         addrlen = sizeof(struct sockaddr_in6);
 809                         break;
 810 #endif
 811 #ifdef LDAP_PF_LOCAL
 812                 case AF_LOCAL:
 813                         addrlen = sizeof(struct sockaddr_un);
 814                         break;
 815 #endif
 816                 }
 817
 818                 if (bind(l.sl_sd, *sal, addrlen)) {
 819                         err = sock_errno();
 820 #ifdef NEW_LOGGING
 821                 LDAP_LOG( CONNECTION, INFO,
 822                         "slap_open_listener: bind(%ld) failed errno=%d (%s)\n",
 823                         (long)l.sl_sd, err, sock_errstr(err) );
 824 #else
 825                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 826                        (long) l.sl_sd, err, sock_errstr(err) );
 827 #endif
 828                         tcp_close( l.sl_sd );
 829                         sal++;
 830                         continue;
 831                 }
 832
 833         switch ( (*sal)->sa_family ) {
 834 #ifdef LDAP_PF_LOCAL
 835         case AF_LOCAL: {
 836                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 837 #if 0 /* don't muck with socket perms */
 838                 if ( chmod( addr, l.sl_perms ) < 0 && crit ) {
 839                         int err = sock_errno();
 840 #ifdef NEW_LOGGING
 841                         LDAP_LOG( CONNECTION, INFO,
 842                                 "slap_open_listener: fchmod(%ld) failed errno=%d (%s)\n",
 843                                 (long)l.sl_sd, err, sock_errstr(err) );
 844 #else
 845                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 846                                (long) l.sl_sd, err, sock_errstr(err) );
 847 #endif
 848                         tcp_close( l.sl_sd );
 849                         slap_free_listener_addresses(psal);
 850                         return -1;
 851                 }
 852 #endif
 853                 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
 854                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
 855                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
 856                                 "PATH=%s", addr );
 857         } break;
 858 #endif /* LDAP_PF_LOCAL */
 859
 860         case AF_INET: {
 861                 char *s;
 862 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
 863                 char addr[INET_ADDRSTRLEN];
 864                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
 865                            addr, sizeof(addr) );
 866                 s = addr;
 867 #else
 868                 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
 869 #endif
 870                 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
 871                 l.sl_name.bv_val = ber_memalloc( sizeof("IP=255.255.255.255:65535") );
 872                 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
 873                         "IP=%s:%d",
 874                          s != NULL ? s : SLAP_STRING_UNKNOWN, port );
 875                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
 876         } break;
 877
 878 #ifdef LDAP_PF_INET6
 879         case AF_INET6: {
 880                 char addr[INET6_ADDRSTRLEN];
 881                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
 882                            addr, sizeof addr);
 883                 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
 884                 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
 885                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
 886                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
 887                                 addr, port );
 888                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
 889         } break;
 890 #endif /* LDAP_PF_INET6 */
 891
 892         default:
 893 #ifdef NEW_LOGGING
 894                 LDAP_LOG( CONNECTION, INFO,
 895                         "slap_open_listener: unsupported address family (%d)\n",
 896                         (int)(*sal)->sa_family, 0, 0 );
 897 #else
 898                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 899                         (int) (*sal)->sa_family, 0, 0 );
 900 #endif
 901                 break;
 902         }
 903
 904         AC_MEMCPY(&l.sl_sa, *sal, addrlen);
 905         ber_str2bv( url, 0, 1, &l.sl_url);
 906         li = ch_malloc( sizeof( Listener ) );
 907         *li = l;
 908         slap_listeners[*cur] = li;
 909         (*cur)++;
 910         sal++;
 911
 912         } /* while ( *sal != NULL ) */
 913
 914         slap_free_listener_addresses(psal);
 915
 916         if ( l.sl_url.bv_val == NULL )
 917         {
 918 #ifdef NEW_LOGGING
 919                 LDAP_LOG( CONNECTION, RESULTS,
 920                         "slap_open_listener: failed on %s\n", url, 0, 0 );
 921 #else
 922                 Debug( LDAP_DEBUG_TRACE,
 923                         "slap_open_listener: failed on %s\n", url, 0, 0 );
 924 #endif
 925                 return -1;
 926         }
 927
 928 #ifdef NEW_LOGGING
 929         LDAP_LOG( CONNECTION, RESULTS,
 930                 "slap_open_listener: daemon initialized %s\n",
 931                 l.sl_url.bv_val, 0, 0 );
 932 #else
 933         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 934                 l.sl_url.bv_val, 0, 0 );
 935 #endif
 936         return 0;
 937 }
 938
 939 static int sockinit(void);
 940 static int sockdestroy(void);
 941
 942 int slapd_daemon_init( const char *urls )
 943 {
 944         int i, j, n, rc;
 945         char **u;
 946
 947 #ifdef NEW_LOGGING
 948         LDAP_LOG( CONNECTION, ARGS,
 949                 "slapd_daemon_init: %s\n", urls ? urls : "<null>", 0, 0 );
 950 #else
 951         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 952                 urls ? urls : "<null>", 0, 0 );
 953 #endif
 954         if( (rc = sockinit()) != 0 ) {
 955                 return rc;
 956         }
 957
 958 #ifdef HAVE_SYSCONF
 959         dtblsize = sysconf( _SC_OPEN_MAX );
 960 #elif HAVE_GETDTABLESIZE
 961         dtblsize = getdtablesize();
 962 #else
 963         dtblsize = FD_SETSIZE;
 964 #endif
 965
 966 #ifdef FD_SETSIZE
 967         if(dtblsize > FD_SETSIZE) {
 968                 dtblsize = FD_SETSIZE;
 969         }
 970 #endif  /* !FD_SETSIZE */
 971
 972         /* open a pipe (or something equivalent connected to itself).
 973          * we write a byte on this fd whenever we catch a signal. The main
 974          * loop will be select'ing on this socket, and will wake up when
 975          * this byte arrives.
 976          */
 977         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 978 #ifdef NEW_LOGGING
 979                 LDAP_LOG( CONNECTION, ERR,
 980                         "slap_daemon_init: lutil_pair() failed rc=%d\n", rc, 0, 0);
 981 #else
 982                 Debug( LDAP_DEBUG_ANY,
 983                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 984 #endif
 985                 return rc;
 986         }
 987
 988         FD_ZERO( &slap_daemon.sd_readers );
 989         FD_ZERO( &slap_daemon.sd_writers );
 990
 991         if( urls == NULL ) {
 992                 urls = "ldap:///";
 993         }
 994
 995         u = ldap_str2charray( urls, " " );
 996
 997         if( u == NULL || u[0] == NULL ) {
 998 #ifdef NEW_LOGGING
 999                 LDAP_LOG( CONNECTION, ERR,
1000                         "slap_daemon_init: no urls (%s) provided.\n", urls, 0, 0 );
1001 #else
1002                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1003                         urls, 0, 0 );
1004 #endif
1005                 return -1;
1006         }
1007
1008         for( i=0; u[i] != NULL; i++ ) {
1009 #ifdef NEW_LOGGING
1010                 LDAP_LOG( CONNECTION, DETAIL1,
1011                         "slap_daemon_init: listen on %s\n.", u[i], 0, 0 );
1012 #else
1013                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1014                         u[i], 0, 0 );
1015 #endif
1016         }
1017
1018         if( i == 0 ) {
1019 #ifdef NEW_LOGGING
1020                 LDAP_LOG( CONNECTION, INFO,
1021                          "slap_daemon_init: no listeners to open (%s)\n", urls, 0, 0 );
1022 #else
1023                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1024                         urls, 0, 0 );
1025 #endif
1026                 ldap_charray_free( u );
1027                 return -1;
1028         }
1029
1030 #ifdef NEW_LOGGING
1031         LDAP_LOG( CONNECTION, INFO,
1032                 "slap_daemon_init: %d listeners to open...\n", i, 0, 0 );
1033 #else
1034         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1035                 i, 0, 0 );
1036 #endif
1037         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1038
1039         for(n = 0, j = 0; u[n]; n++ ) {
1040                 if ( slap_open_listener( u[n], &i, &j ) ) {
1041                         ldap_charray_free( u );
1042                         return -1;
1043                 }
1044         }
1045         slap_listeners[j] = NULL;
1046
1047 #ifdef NEW_LOGGING
1048         LDAP_LOG( CONNECTION, DETAIL1,
1049                 "slap_daemon_init: %d listeners opened\n", i, 0, 0 );
1050 #else
1051         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1052                 i, 0, 0 );
1053 #endif
1054
1055 #ifdef HAVE_SLP
1056         slapd_slp_init( urls );
1057         slapd_slp_reg();
1058 #endif
1059
1060         ldap_charray_free( u );
1061         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1062         return !i;
1063 }
1064
1065
1066 int
1067 slapd_daemon_destroy(void)
1068 {
1069         connections_destroy();
1070         tcp_close( wake_sds[1] );
1071         tcp_close( wake_sds[0] );
1072         sockdestroy();
1073
1074 #ifdef HAVE_SLP
1075         slapd_slp_dereg();
1076         slapd_slp_deinit();
1077 #endif
1078
1079         return 0;
1080 }
1081
1082
1083 static void
1084 close_listeners(
1085         int remove
1086 )
1087 {
1088         int l;
1089
1090         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1091                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1092                         if ( remove )
1093                                 slapd_remove( slap_listeners[l]->sl_sd, 0 );
1094 #ifdef LDAP_PF_LOCAL
1095                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1096                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1097                         }
1098 #endif /* LDAP_PF_LOCAL */
1099                         slapd_close( slap_listeners[l]->sl_sd );
1100                 }
1101                 if ( slap_listeners[l]->sl_url.bv_val )
1102                         ber_memfree( slap_listeners[l]->sl_url.bv_val );
1103                 if ( slap_listeners[l]->sl_name.bv_val )
1104                         ber_memfree( slap_listeners[l]->sl_name.bv_val );
1105                 free ( slap_listeners[l] );
1106                 slap_listeners[l] = NULL;
1107         }
1108 }
1109
1110
1111 static void *
1112 slapd_daemon_task(
1113         void *ptr
1114 )
1115 {
1116         int l;
1117         time_t  last_idle_check = 0;
1118         time( &starttime );
1119
1120         if ( global_idletimeout > 0 ) {
1121                 last_idle_check = slap_get_time();
1122         }
1123         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1124                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1125                         continue;
1126 #ifdef LDAP_CONNECTIONLESS
1127                 /* Since this is connectionless, the data port is the
1128                  * listening port. The listen() and accept() calls
1129                  * are unnecessary.
1130                  */
1131                 if ( slap_listeners[l]->sl_is_udp ) {
1132                         slapd_add( slap_listeners[l]->sl_sd );
1133                         continue;
1134                 }
1135 #endif
1136
1137                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
1138                         int err = sock_errno();
1139
1140 #ifdef LDAP_PF_INET6
1141                         /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1142                          * we are already listening to in6addr_any, then we want to ignore
1143                          * this and continue.
1144                          */
1145                         if ( err == EADDRINUSE ) {
1146                                 int i;
1147                                 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1148                                 struct sockaddr_in6 sa6;
1149
1150                                 if ( sa.sin_family == AF_INET &&
1151                                      sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1152                                         for ( i = 0 ; i < l; i++ ) {
1153                                                 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1154                                                 if ( sa6.sin6_family == AF_INET6 &&
1155                                                      !memcmp( &sa6.sin6_addr, &in6addr_any, sizeof(struct in6_addr) ) )
1156                                                         break;
1157                                         }
1158
1159                                         if ( i < l ) {
1160                                                 /* We are already listening to in6addr_any */
1161 #ifdef NEW_LOGGING
1162                                                 LDAP_LOG(CONNECTION, WARNING,
1163                                                            "slapd_daemon_task: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n", 0, 0, 0 );
1164 #else
1165                                                 Debug( LDAP_DEBUG_CONNS,
1166                                                        "daemon: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n",
1167                                                        0, 0, 0 );
1168 #endif
1169                                                 slapd_close( slap_listeners[l]->sl_sd );
1170                                                 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1171                                                 continue;
1172                                         }
1173                                 }
1174                         }
1175 #endif
1176 #ifdef NEW_LOGGING
1177                         LDAP_LOG( CONNECTION, ERR,
1178                                 "slapd_daemon_task: listen( %s, 5 ) failed errno=%d (%s)\n",
1179                                 slap_listeners[l]->sl_url.bv_val, err, sock_errstr(err) );
1180 #else
1181                         Debug( LDAP_DEBUG_ANY,
1182                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1183                                         slap_listeners[l]->sl_url.bv_val, err,
1184                                         sock_errstr(err) );
1185 #endif
1186                         return( (void*)-1 );
1187                 }
1188
1189                 slapd_add( slap_listeners[l]->sl_sd );
1190         }
1191
1192 #ifdef HAVE_NT_SERVICE_MANAGER
1193         if ( started_event != NULL ) {
1194                 ldap_pvt_thread_cond_signal( &started_event );
1195         }
1196 #endif
1197         /* initialization complete. Here comes the loop. */
1198
1199         while ( !slapd_shutdown ) {
1200                 ber_socket_t i;
1201                 int ns;
1202                 int at;
1203                 ber_socket_t nfds;
1204 #define SLAPD_EBADF_LIMIT 16
1205                 int ebadf = 0;
1206                 int emfile = 0;
1207
1208 #define SLAPD_IDLE_CHECK_LIMIT 4
1209                 time_t  now;
1210
1211
1212                 fd_set                  readfds;
1213                 fd_set                  writefds;
1214                 Sockaddr                from;
1215
1216                 struct timeval          zero;
1217                 struct timeval          *tvp;
1218
1219 #ifdef LDAP_SYNCREPL
1220                 struct timeval          diff;
1221                 struct timeval          *cat;
1222                 time_t                          tdelta = 1;
1223                 struct re_s*            rtask;
1224 #endif
1225
1226                 now = slap_get_time();
1227
1228                 if( emfile ) {
1229                         connections_timeout_idle( now );
1230
1231                 } else if ( global_idletimeout > 0 ) {
1232                         if ( difftime( last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1233                                 connections_timeout_idle( now );
1234                         }
1235                 }
1236
1237 #ifdef SIGHUP
1238                 if( slapd_gentle_shutdown ) {
1239                         ber_socket_t active;
1240
1241                         if( slapd_gentle_shutdown == 1 ) {
1242                                 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1243                                 close_listeners( 1 );
1244                                 global_restrictops |= SLAP_RESTRICT_OP_WRITES;
1245                                 slapd_gentle_shutdown = 2;
1246                         }
1247
1248                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1249                         active = slap_daemon.sd_nactives;
1250                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1251                         if( active == 0 ) {
1252                                 slapd_shutdown = 2;
1253                                 break;
1254                         }
1255                 }
1256 #endif
1257
1258                 FD_ZERO( &writefds );
1259                 FD_ZERO( &readfds );
1260
1261                 zero.tv_sec = 0;
1262                 zero.tv_usec = 0;
1263
1264                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1265
1266 #ifdef FD_SET_MANUAL_COPY
1267                 for( s = 0; s < nfds; s++ ) {
1268                         if(FD_ISSET( &slap_sd_readers, s )) {
1269                                 FD_SET( s, &readfds );
1270                         }
1271                         if(FD_ISSET( &slap_sd_writers, s )) {
1272                                 FD_SET( s, &writefds );
1273                         }
1274                 }
1275 #else
1276                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
1277                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
1278 #endif
1279                 assert(!FD_ISSET(wake_sds[0], &readfds));
1280                 FD_SET( wake_sds[0], &readfds );
1281
1282                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1283                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1284                                 continue;
1285                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
1286                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
1287                 }
1288
1289 #ifndef HAVE_WINSOCK
1290                 nfds = slap_daemon.sd_nfds;
1291 #else
1292                 nfds = dtblsize;
1293 #endif
1294
1295                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1296
1297                 at = ldap_pvt_thread_pool_backload(&connection_pool);
1298
1299 #ifdef LDAP_SYNCREPL
1300                 ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex );
1301                 rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
1302                 while ( cat && cat->tv_sec && cat->tv_sec <= now ) {
1303                         if ( ldap_pvt_runqueue_isrunning( &syncrepl_rq, rtask )) {
1304                                 ldap_pvt_runqueue_resched( &syncrepl_rq, rtask );
1305                         } else {
1306                                 ldap_pvt_runqueue_runtask( &syncrepl_rq, rtask );
1307                                 ldap_pvt_runqueue_resched( &syncrepl_rq, rtask );
1308                                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
1309                                 ldap_pvt_thread_pool_submit( &connection_pool,
1310                                                                                         rtask->routine, (void *) rtask );
1311                         }
1312                         rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
1313                 }
1314                 rtask = ldap_pvt_runqueue_next_sched( &syncrepl_rq, &cat );
1315                 ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex );
1316
1317                 if ( cat != NULL ) {
1318                         diff.tv_sec = difftime( cat->tv_sec, now );
1319                         if ( diff.tv_sec == 0 )
1320                                 diff.tv_sec = tdelta;
1321                 }
1322 #endif
1323
1324 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
1325                 tvp = NULL;
1326 #else
1327                 tvp = at ? &zero : NULL;
1328 #endif
1329
1330 #ifdef LDAP_SYNCREPL
1331                 if ( cat != NULL ) {
1332                         if ( tvp == NULL ) {
1333                                 tvp = &diff;
1334                         }
1335                 }
1336 #endif
1337
1338                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1339                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1340                                 continue;
1341
1342 #ifdef NEW_LOGGING
1343                         LDAP_LOG( CONNECTION, DETAIL1,
1344                                 "slapd_daemon_task: select: listen=%d "
1345                                 "active_threads=%d tvp=%s\n",
1346                                 slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "zero" );
1347 #else
1348                         Debug( LDAP_DEBUG_CONNS,
1349                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1350                                         slap_listeners[l]->sl_sd, at,
1351                                         tvp == NULL ? "NULL" : "zero" );
1352 #endif
1353                 }
1354
1355                 switch(ns = select( nfds, &readfds,
1356 #ifdef HAVE_WINSOCK
1357                         /* don't pass empty fd_set */
1358                         ( writefds.fd_count > 0 ? &writefds : NULL ),
1359 #else
1360                         &writefds,
1361 #endif
1362                         NULL, tvp ))
1363                 {
1364                 case -1: {      /* failure - try again */
1365                                 int err = sock_errno();
1366
1367                                 if( err == EBADF
1368 #ifdef WSAENOTSOCK
1369                                         /* you'd think this would be EBADF */
1370                                         || err == WSAENOTSOCK
1371 #endif
1372                                 ) {
1373                                         if (++ebadf < SLAPD_EBADF_LIMIT)
1374                                                 continue;
1375                                 }
1376
1377                                 if( err != EINTR ) {
1378 #ifdef NEW_LOGGING
1379                                         LDAP_LOG( CONNECTION, INFO,
1380                                                 "slapd_daemon_task: select failed (%d): %s\n",
1381                                                 err, sock_errstr(err), 0 );
1382 #else
1383                                         Debug( LDAP_DEBUG_CONNS,
1384                                                 "daemon: select failed (%d): %s\n",
1385                                                 err, sock_errstr(err), 0 );
1386 #endif
1387                                         slapd_shutdown = 2;
1388                                 }
1389                         }
1390                         continue;
1391
1392                 case 0:         /* timeout - let threads run */
1393                         ebadf = 0;
1394 #ifdef NEW_LOGGING
1395                         LDAP_LOG( CONNECTION, DETAIL2,
1396                                    "slapd_daemon_task: select timeout - yielding\n", 0, 0, 0 );
1397 #else
1398                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1399                             0, 0, 0 );
1400 #endif
1401
1402                         ldap_pvt_thread_yield();
1403                         continue;
1404
1405                 default:        /* something happened - deal with it */
1406                         if( slapd_shutdown ) continue;
1407
1408                         ebadf = 0;
1409 #ifdef NEW_LOGGING
1410                         LDAP_LOG( CONNECTION, DETAIL2,
1411                                    "slapd_daemon_task: activity on %d descriptors\n", ns, 0, 0 );
1412 #else
1413                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
1414                                 ns, 0, 0 );
1415 #endif
1416                         /* FALL THRU */
1417                 }
1418
1419                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
1420                         char c[BUFSIZ];
1421                         tcp_read( wake_sds[0], c, sizeof(c) );
1422 #if defined(NO_THREADS) || defined(HAVE_GNU_PTH)
1423                         waking = 0;
1424 #endif
1425                         continue;
1426                 }
1427
1428                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1429                         ber_socket_t s;
1430                         socklen_t len = sizeof(from);
1431                         long id;
1432                         slap_ssf_t ssf = 0;
1433                         char *authid = NULL;
1434 #ifdef SLAPD_RLOOKUPS
1435                         char hbuf[NI_MAXHOST];
1436 #endif
1437
1438                         char    *dnsname = NULL;
1439                         char    *peeraddr = NULL;
1440 #ifdef LDAP_PF_LOCAL
1441                         char    peername[MAXPATHLEN + sizeof("PATH=")];
1442 #elif defined(LDAP_PF_INET6)
1443                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1444 #else
1445                         char    peername[sizeof("IP=255.255.255.255:65336")];
1446 #endif /* LDAP_PF_LOCAL */
1447
1448                         peername[0] = '\0';
1449
1450                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1451                                 continue;
1452
1453                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
1454                                 continue;
1455
1456 #ifdef LDAP_CONNECTIONLESS
1457                         if ( slap_listeners[l]->sl_is_udp ) {
1458                                 /* The first time we receive a query, we set this
1459                                  * up as a "connection". It remains open for the life
1460                                  * of the slapd.
1461                                  */
1462                                 if ( slap_listeners[l]->sl_is_udp < 2 ) {
1463                                     id = connection_init(
1464                                         slap_listeners[l]->sl_sd,
1465                                         slap_listeners[l], "", "",
1466                                         2, ssf, authid );
1467                                     slap_listeners[l]->sl_is_udp++;
1468                                 }
1469                                 continue;
1470                         }
1471 #endif
1472
1473                         s = accept( slap_listeners[l]->sl_sd,
1474                                 (struct sockaddr *) &from, &len );
1475                         if ( s == AC_SOCKET_INVALID ) {
1476                                 int err = sock_errno();
1477
1478 #ifdef EMFILE
1479                                 if( err == EMFILE ) {
1480                                         emfile++;
1481                                 } else
1482 #endif
1483 #ifdef ENFILE
1484                                 if( err == ENFILE ) {
1485                                         emfile++;
1486                                 } else
1487 #endif
1488                                 {
1489                                         emfile=0;
1490                                 }
1491
1492                                 if( emfile < 3 ) {
1493 #ifdef NEW_LOGGING
1494                                         LDAP_LOG( CONNECTION, ERR,
1495                                                 "slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
1496                                                 (long)slap_listeners[l]->sl_sd,
1497                                                 err, sock_errstr(err) );
1498 #else
1499                                         Debug( LDAP_DEBUG_ANY,
1500                                             "daemon: accept(%ld) failed errno=%d (%s)\n",
1501                                             (long) slap_listeners[l]->sl_sd, err,
1502                                             sock_errstr(err) );
1503 #endif
1504                                 } else {
1505                                         /* prevent busy loop */
1506 #  ifdef HAVE_USLEEP
1507                                         if( emfile % 4 == 3 ) usleep( 250 );
1508 #  else
1509                                         if( emfile % 8 == 7 ) sleep( 1 );
1510 #  endif
1511                                 }
1512
1513                                 ldap_pvt_thread_yield();
1514                                 continue;
1515                         }
1516                         emfile = 0;
1517
1518 #ifndef HAVE_WINSOCK
1519                         /* make sure descriptor number isn't too great */
1520                         if ( s >= dtblsize ) {
1521 #ifdef NEW_LOGGING
1522                                 LDAP_LOG( CONNECTION, ERR,
1523                                    "slapd_daemon_task: %ld beyond descriptor table size %ld\n",
1524                                    (long)s, (long)dtblsize, 0 );
1525 #else
1526                                 Debug( LDAP_DEBUG_ANY,
1527                                         "daemon: %ld beyond descriptor table size %ld\n",
1528                                         (long) s, (long) dtblsize, 0 );
1529 #endif
1530
1531                                 slapd_close(s);
1532                                 ldap_pvt_thread_yield();
1533                                 continue;
1534                         }
1535 #endif
1536
1537 #ifdef LDAP_DEBUG
1538                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1539
1540                         /* newly accepted stream should not be in any of the FD SETS */
1541                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
1542                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
1543                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
1544
1545                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1546 #endif
1547
1548 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1549 #ifdef LDAP_PF_LOCAL
1550                         /* for IPv4 and IPv6 sockets only */
1551                         if ( from.sa_addr.sa_family != AF_LOCAL )
1552 #endif /* LDAP_PF_LOCAL */
1553                         {
1554                                 int rc;
1555                                 int tmp;
1556 #ifdef SO_KEEPALIVE
1557                                 /* enable keep alives */
1558                                 tmp = 1;
1559                                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1560                                         (char *) &tmp, sizeof(tmp) );
1561                                 if ( rc == AC_SOCKET_ERROR ) {
1562                                         int err = sock_errno();
1563 #ifdef NEW_LOGGING
1564                                         LDAP_LOG( CONNECTION, ERR,
1565                                                 "slapd_daemon_task: setsockopt( %ld, SO_KEEPALIVE)"
1566                                            " failed errno=%d (%s)\n",
1567                                                 (long)s, err, sock_errstr(err) );
1568 #else
1569                                         Debug( LDAP_DEBUG_ANY,
1570                                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1571                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1572 #endif
1573                                 }
1574 #endif
1575 #ifdef TCP_NODELAY
1576                                 /* enable no delay */
1577                                 tmp = 1;
1578                                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1579                                         (char *)&tmp, sizeof(tmp) );
1580                                 if ( rc == AC_SOCKET_ERROR ) {
1581                                         int err = sock_errno();
1582 #ifdef NEW_LOGGING
1583                                         LDAP_LOG( CONNECTION, ERR,
1584                                                 "slapd_daemon_task: setsockopt( %ld, "
1585                                                 "TCP_NODELAY) failed errno=%d (%s)\n",
1586                                                 (long)s, err, sock_errstr(err) );
1587 #else
1588                                         Debug( LDAP_DEBUG_ANY,
1589                                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1590                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1591 #endif
1592                                 }
1593 #endif
1594                         }
1595 #endif
1596
1597 #ifdef NEW_LOGGING
1598                         LDAP_LOG( CONNECTION, DETAIL1,
1599                                 "slapd_daemon_task: new connection on %ld\n", (long)s, 0, 0 );
1600 #else
1601                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
1602                                 (long) s, 0, 0 );
1603 #endif
1604                         switch ( from.sa_addr.sa_family ) {
1605 #  ifdef LDAP_PF_LOCAL
1606                         case AF_LOCAL:
1607                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1608                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
1609                                 {
1610                                         uid_t uid;
1611                                         gid_t gid;
1612
1613                                         if( getpeereid( s, &uid, &gid ) == 0 ) {
1614                                                 authid = ch_malloc(
1615                                                         sizeof("uidnumber=4294967295+gidnumber=4294967295,"
1616                                                                 "cn=peercred,cn=external,cn=auth"));
1617                                                 sprintf(authid, "uidnumber=%d+gidnumber=%d,"
1618                                                         "cn=peercred,cn=external,cn=auth",
1619                                                         (int) uid, (int) gid);
1620                                         }
1621                                 }
1622                                 dnsname = "local";
1623                                 break;
1624 #endif /* LDAP_PF_LOCAL */
1625
1626 #  ifdef LDAP_PF_INET6
1627                         case AF_INET6:
1628                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1629                                 peeraddr = inet_ntoa( *((struct in_addr *)
1630                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1631                                 sprintf( peername, "IP=%s:%d",
1632                                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1633                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1634                         } else {
1635                                 char addr[INET6_ADDRSTRLEN];
1636
1637                                 peeraddr = (char *) inet_ntop( AF_INET6,
1638                                                       &from.sa_in6_addr.sin6_addr,
1639                                                       addr, sizeof addr );
1640                                 sprintf( peername, "IP=%s %d",
1641                                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1642                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1643                         }
1644                         break;
1645 #  endif /* LDAP_PF_INET6 */
1646
1647                         case AF_INET:
1648                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1649                         sprintf( peername, "IP=%s:%d",
1650                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1651                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1652                                 break;
1653
1654                         default:
1655                                 slapd_close(s);
1656                                 continue;
1657                         }
1658
1659                         if ( ( from.sa_addr.sa_family == AF_INET )
1660 #ifdef LDAP_PF_INET6
1661                                 || ( from.sa_addr.sa_family == AF_INET6 )
1662 #endif
1663                         ) {
1664 #ifdef SLAPD_RLOOKUPS
1665                                 if ( use_reverse_lookup ) {
1666                                         char *herr;
1667                                         if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
1668                                                 sizeof(hbuf), &herr ) == 0) {
1669                                                 ldap_pvt_str2lower( hbuf );
1670                                                 dnsname = hbuf;
1671                                         }
1672                                 }
1673 #else
1674                                 dnsname = NULL;
1675 #endif /* SLAPD_RLOOKUPS */
1676
1677 #ifdef HAVE_TCPD
1678                                 if ( !hosts_ctl("slapd",
1679                                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1680                                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1681                                                 SLAP_STRING_UNKNOWN ))
1682                                 {
1683                                         /* DENY ACCESS */
1684                                         Statslog( LDAP_DEBUG_STATS,
1685                                                 "fd=%ld DENIED from %s (%s)",
1686                                                 (long) s,
1687                                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1688                                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1689                                                 0, 0 );
1690                                         slapd_close(s);
1691                                         continue;
1692                                 }
1693 #endif /* HAVE_TCPD */
1694                         }
1695
1696                         id = connection_init(s,
1697                                 slap_listeners[l],
1698                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1699                                 peername,
1700 #ifdef HAVE_TLS
1701                                 slap_listeners[l]->sl_is_tls,
1702 #else
1703                                 0,
1704 #endif
1705                                 ssf,
1706                                 authid );
1707
1708                         if( authid ) ch_free(authid);
1709
1710                         if( id < 0 ) {
1711 #ifdef NEW_LOGGING
1712                                 LDAP_LOG( CONNECTION, INFO,
1713                                         "slapd_daemon_task: "
1714                                         "connection_init(%ld, %s, %s) "
1715                                         "failed.\n",
1716                                         (long)s, peername,
1717                                         slap_listeners[l]->sl_name.bv_val );
1718 #else
1719                                 Debug( LDAP_DEBUG_ANY,
1720                                         "daemon: connection_init(%ld, %s, %s) "
1721                                         "failed.\n",
1722                                         (long) s,
1723                                         peername,
1724                                         slap_listeners[l]->sl_name.bv_val );
1725 #endif
1726                                 slapd_close(s);
1727                                 continue;
1728                         }
1729
1730                         Statslog( LDAP_DEBUG_STATS,
1731                                 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1732                                 id, (long) s,
1733                                 peername,
1734                                 slap_listeners[l]->sl_name.bv_val,
1735                                 0 );
1736
1737                         slapd_add( s );
1738                         continue;
1739                 }
1740
1741 #ifdef LDAP_DEBUG
1742 #ifdef NEW_LOGGING
1743                 LDAP_LOG( CONNECTION, DETAIL2,
1744                            "slapd_daemon_task: activity on ", 0, 0, 0 );
1745 #else
1746                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1747 #endif
1748 #ifdef HAVE_WINSOCK
1749                 for ( i = 0; i < readfds.fd_count; i++ ) {
1750 #ifdef NEW_LOGGING
1751                         LDAP_LOG( CONNECTION, DETAIL2,
1752                                 " %d%s", readfds.fd_array[i], "r", 0, 0 );
1753 #else
1754                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1755                                 readfds.fd_array[i], "r", 0 );
1756 #endif
1757                 }
1758                 for ( i = 0; i < writefds.fd_count; i++ ) {
1759 #ifdef NEW_LOGGING
1760                         LDAP_LOG( CONNECTION, DETAIL2,
1761                                 " %d%s", writefds.fd_array[i], "w" , 0 );
1762 #else
1763                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1764                                 writefds.fd_array[i], "w", 0 );
1765 #endif
1766                 }
1767
1768 #else
1769                 for ( i = 0; i < nfds; i++ ) {
1770                         int     r, w;
1771                         int     is_listener = 0;
1772
1773                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1774                                 if ( i == slap_listeners[l]->sl_sd ) {
1775 #ifdef LDAP_CONNECTIONLESS
1776                                 /* The listener is the data port. Don't
1777                                  * skip it.
1778                                  */
1779                                         if (slap_listeners[l]->sl_is_udp) continue;
1780 #endif
1781                                         is_listener = 1;
1782                                         break;
1783                                 }
1784                         }
1785                         if ( is_listener ) {
1786                                 continue;
1787                         }
1788                         r = FD_ISSET( i, &readfds );
1789                         w = FD_ISSET( i, &writefds );
1790                         if ( r || w ) {
1791 #ifdef NEW_LOGGING
1792                                 LDAP_LOG( CONNECTION, DETAIL2,
1793                                         " %d%s%s", i, r ? "r" : "", w ? "w" : "" );
1794 #else
1795                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1796                                     r ? "r" : "", w ? "w" : "" );
1797 #endif
1798                         }
1799                 }
1800 #endif
1801 #ifdef NEW_LOGGING
1802                 LDAP_LOG( CONNECTION, DETAIL2, "\n", 0, 0, 0 );
1803 #else
1804                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1805 #endif
1806
1807 #endif
1808
1809                 /* loop through the writers */
1810 #ifdef HAVE_WINSOCK
1811                 for ( i = 0; i < writefds.fd_count; i++ )
1812 #else
1813                 for ( i = 0; i < nfds; i++ )
1814 #endif
1815                 {
1816                         ber_socket_t wd;
1817                         int is_listener = 0;
1818 #ifdef HAVE_WINSOCK
1819                         wd = writefds.fd_array[i];
1820 #else
1821                         if( ! FD_ISSET( i, &writefds ) ) {
1822                                 continue;
1823                         }
1824                         wd = i;
1825 #endif
1826
1827                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1828                                 if ( i == slap_listeners[l]->sl_sd ) {
1829 #ifdef LDAP_CONNECTIONLESS
1830                                         if (slap_listeners[l]->sl_is_udp) continue;
1831 #endif
1832                                         is_listener = 1;
1833                                         break;
1834                                 }
1835                         }
1836                         if ( is_listener ) {
1837                                 continue;
1838                         }
1839 #ifdef NEW_LOGGING
1840                         LDAP_LOG( CONNECTION, DETAIL2,
1841                                 "slapd_daemon_task: write active on %d\n", wd, 0, 0 );
1842 #else
1843                         Debug( LDAP_DEBUG_CONNS,
1844                                 "daemon: write active on %d\n",
1845                                 wd, 0, 0 );
1846 #endif
1847                         /*
1848                          * NOTE: it is possible that the connection was closed
1849                          * and that the stream is now inactive.
1850                          * connection_write() must valid the stream is still
1851                          * active.
1852                          */
1853
1854                         if ( connection_write( wd ) < 0 ) {
1855                                 FD_CLR( (unsigned) wd, &readfds );
1856                                 slapd_close( wd );
1857                         }
1858                 }
1859
1860 #ifdef HAVE_WINSOCK
1861                 for ( i = 0; i < readfds.fd_count; i++ )
1862 #else
1863                 for ( i = 0; i < nfds; i++ )
1864 #endif
1865                 {
1866                         ber_socket_t rd;
1867                         int is_listener = 0;
1868
1869 #ifdef HAVE_WINSOCK
1870                         rd = readfds.fd_array[i];
1871 #else
1872                         if( ! FD_ISSET( i, &readfds ) ) {
1873                                 continue;
1874                         }
1875                         rd = i;
1876 #endif
1877
1878                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1879                                 if ( rd == slap_listeners[l]->sl_sd ) {
1880 #ifdef LDAP_CONNECTIONLESS
1881                                         if (slap_listeners[l]->sl_is_udp) continue;
1882 #endif
1883                                         is_listener = 1;
1884                                         break;
1885                                 }
1886                         }
1887                         if ( is_listener ) {
1888                                 continue;
1889                         }
1890
1891 #ifdef NEW_LOGGING
1892                         LDAP_LOG( CONNECTION, DETAIL2,
1893                                 "slapd_daemon_task: read activity on %d\n", rd, 0, 0 );
1894 #else
1895                         Debug ( LDAP_DEBUG_CONNS,
1896                                 "daemon: read activity on %d\n", rd, 0, 0 );
1897 #endif
1898                         /*
1899                          * NOTE: it is possible that the connection was closed
1900                          * and that the stream is now inactive.
1901                          * connection_read() must valid the stream is still
1902                          * active.
1903                          */
1904
1905                         if ( connection_read( rd ) < 0 ) {
1906                                 slapd_close( rd );
1907                         }
1908                 }
1909                 ldap_pvt_thread_yield();
1910         }
1911
1912         if( slapd_shutdown == 1 ) {
1913 #ifdef NEW_LOGGING
1914                 LDAP_LOG( CONNECTION, CRIT,
1915                    "slapd_daemon_task: shutdown requested and initiated.\n", 0, 0, 0 );
1916 #else
1917                 Debug( LDAP_DEBUG_TRACE,
1918                         "daemon: shutdown requested and initiated.\n",
1919                         0, 0, 0 );
1920 #endif
1921
1922         } else if ( slapd_shutdown == 2 ) {
1923 #ifdef HAVE_NT_SERVICE_MANAGER
1924 #ifdef NEW_LOGGING
1925                         LDAP_LOG( CONNECTION, CRIT,
1926                            "slapd_daemon_task: shutdown initiated by Service Manager.\n",
1927                            0, 0, 0);
1928 #else
1929                         Debug( LDAP_DEBUG_TRACE,
1930                                "daemon: shutdown initiated by Service Manager.\n",
1931                                0, 0, 0);
1932 #endif
1933 #else /* !HAVE_NT_SERVICE_MANAGER */
1934 #ifdef NEW_LOGGING
1935                         LDAP_LOG( CONNECTION, CRIT,
1936                            "slapd_daemon_task: abnormal condition, "
1937                            "shutdown initiated.\n", 0, 0, 0 );
1938 #else
1939                         Debug( LDAP_DEBUG_TRACE,
1940                                "daemon: abnormal condition, shutdown initiated.\n",
1941                                0, 0, 0 );
1942 #endif
1943 #endif /* !HAVE_NT_SERVICE_MANAGER */
1944         } else {
1945 #ifdef NEW_LOGGING
1946                 LDAP_LOG( CONNECTION, CRIT,
1947                    "slapd_daemon_task: no active streams, shutdown initiated.\n",
1948                    0, 0, 0 );
1949 #else
1950                 Debug( LDAP_DEBUG_TRACE,
1951                        "daemon: no active streams, shutdown initiated.\n",
1952                        0, 0, 0 );
1953 #endif
1954         }
1955
1956         if( slapd_gentle_shutdown != 2 ) {
1957                 close_listeners ( 0 );
1958         }
1959
1960         free ( slap_listeners );
1961         slap_listeners = NULL;
1962
1963         if( !slapd_gentle_shutdown ) {
1964                 connections_shutdown();
1965         }
1966
1967 #ifdef NEW_LOGGING
1968         LDAP_LOG( CONNECTION, CRIT,
1969                 "slapd_daemon_task: shutdown waiting for %d threads to terminate.\n",
1970                 ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1971 #else
1972         Debug( LDAP_DEBUG_ANY,
1973             "slapd shutdown: waiting for %d threads to terminate\n",
1974             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1975 #endif
1976         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1977
1978         return NULL;
1979 }
1980
1981
1982 int slapd_daemon( void )
1983 {
1984         int rc;
1985
1986         connections_init();
1987
1988 #define SLAPD_LISTENER_THREAD 1
1989 #if defined( SLAPD_LISTENER_THREAD )
1990         {
1991                 ldap_pvt_thread_t       listener_tid;
1992
1993                 /* listener as a separate THREAD */
1994                 rc = ldap_pvt_thread_create( &listener_tid,
1995                         0, slapd_daemon_task, NULL );
1996
1997                 if ( rc != 0 ) {
1998 #ifdef NEW_LOGGING
1999                         LDAP_LOG( CONNECTION, ERR,
2000                                 "slapd_daemon: listener ldap_pvt_thread_create failed (%d).\n",
2001                                 rc, 0, 0 );
2002 #else
2003                         Debug( LDAP_DEBUG_ANY,
2004                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2005 #endif
2006                         return rc;
2007                 }
2008
2009                 /* wait for the listener thread to complete */
2010                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
2011         }
2012 #else
2013         /* experimental code */
2014         slapd_daemon_task( NULL );
2015 #endif
2016
2017         return 0;
2018
2019 }
2020
2021 int sockinit(void)
2022 {
2023 #if defined( HAVE_WINSOCK2 )
2024     WORD wVersionRequested;
2025         WSADATA wsaData;
2026         int err;
2027
2028         wVersionRequested = MAKEWORD( 2, 0 );
2029
2030         err = WSAStartup( wVersionRequested, &wsaData );
2031         if ( err != 0 ) {
2032                 /* Tell the user that we couldn't find a usable */
2033                 /* WinSock DLL.                                  */
2034                 return -1;
2035         }
2036
2037         /* Confirm that the WinSock DLL supports 2.0.*/
2038         /* Note that if the DLL supports versions greater    */
2039         /* than 2.0 in addition to 2.0, it will still return */
2040         /* 2.0 in wVersion since that is the version we      */
2041         /* requested.                                        */
2042
2043         if ( LOBYTE( wsaData.wVersion ) != 2 ||
2044                 HIBYTE( wsaData.wVersion ) != 0 )
2045         {
2046             /* Tell the user that we couldn't find a usable */
2047             /* WinSock DLL.                                  */
2048             WSACleanup();
2049             return -1;
2050         }
2051
2052         /* The WinSock DLL is acceptable. Proceed. */
2053 #elif defined( HAVE_WINSOCK )
2054         WSADATA wsaData;
2055         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
2056             return -1;
2057         }
2058 #endif
2059         return 0;
2060 }
2061
2062 int sockdestroy(void)
2063 {
2064 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2065         WSACleanup();
2066 #endif
2067         return 0;
2068 }
2069
2070 RETSIGTYPE
2071 slap_sig_shutdown( int sig )
2072 {
2073 #ifdef NEW_LOGGING
2074         LDAP_LOG( CONNECTION, CRIT,
2075                 "slap_sig_shutdown: signal %d\n", sig, 0, 0 );
2076 #else
2077         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2078 #endif
2079
2080         /*
2081          * If the NT Service Manager is controlling the server, we don't
2082          * want SIGBREAK to kill the server. For some strange reason,
2083          * SIGBREAK is generated when a user logs out.
2084          */
2085
2086 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2087         if (is_NT_Service && sig == SIGBREAK)
2088 #ifdef NEW_LOGGING
2089             LDAP_LOG( CONNECTION, CRIT,
2090                     "slap_sig_shutdown: SIGBREAK ignored.\n", 0, 0, 0 );
2091 #else
2092             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
2093                   0, 0, 0);
2094 #endif
2095         else
2096 #endif
2097 #ifdef SIGHUP
2098         if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0)
2099                 slapd_gentle_shutdown = 1;
2100         else
2101 #endif
2102         slapd_shutdown = 1;
2103
2104         WAKE_LISTENER(1);
2105
2106         /* reinstall self */
2107         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2108 }
2109
2110 RETSIGTYPE
2111 slap_sig_wake( int sig )
2112 {
2113         WAKE_LISTENER(1);
2114
2115         /* reinstall self */
2116         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2117 }
2118
2119
2120 void slapd_add_internal(ber_socket_t s) {
2121         slapd_add(s);
2122 }
2123
2124 Listener ** slapd_get_listeners(void) {
2125         return slap_listeners;
2126 }