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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6
   7 #include "portable.h"
   8
   9 #include <stdio.h>
  10
  11 #include <ac/ctype.h>
  12 #include <ac/errno.h>
  13 #include <ac/signal.h>
  14 #include <ac/socket.h>
  15 #include <ac/string.h>
  16 #include <ac/time.h>
  17 #include <ac/unistd.h>
  18
  19 #include "ldap_pvt.h"
  20 #include "lutil.h"
  21 #include "slap.h"
  22
  23 #ifdef HAVE_TCPD
  24 #include <tcpd.h>
  25
  26 int allow_severity = LOG_INFO;
  27 int deny_severity = LOG_NOTICE;
  28 #endif /* TCP Wrappers */
  29
  30 #ifdef LDAP_PF_LOCAL
  31 #include <sys/stat.h>
  32 #endif /* LDAP_PF_LOCAL */
  33
  34 /* globals */
  35 time_t starttime;
  36 ber_socket_t dtblsize;
  37
  38 typedef struct slap_listener {
  39         char* sl_url;
  40         char* sl_name;
  41 #ifdef HAVE_TLS
  42         int             sl_is_tls;
  43 #endif
  44 #ifdef LDAP_CONNECTIONLESS
  45         int     sl_is_udp;              /* UDP listener is also data port */
  46 #endif
  47         ber_socket_t            sl_sd;
  48         Sockaddr sl_sa;
  49 #define sl_addr sl_sa.sa_in_addr
  50 } Listener;
  51
  52 Listener **slap_listeners = NULL;
  53
  54 #define SLAPD_LISTEN 10
  55
  56 static ber_socket_t wake_sds[2];
  57
  58 #ifdef NO_THREADS
  59 static int waking;
  60 #define WAKE_LISTENER(w) \
  61 ((w && !waking) ? tcp_write( wake_sds[1], "0", 1 ), waking=1 : 0)
  62 #else
  63 #define WAKE_LISTENER(w) \
  64 do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0)
  65 #endif
  66
  67 #ifdef HAVE_NT_SERVICE_MANAGER
  68 /* in nt_main.c */
  69 extern ldap_pvt_thread_cond_t                   started_event;
  70 extern int        is_NT_Service;
  71 #endif
  72
  73 #ifndef HAVE_WINSOCK
  74 static
  75 #endif
  76 volatile sig_atomic_t slapd_shutdown = 0;
  77
  78 static struct slap_daemon {
  79         ldap_pvt_thread_mutex_t sd_mutex;
  80
  81         int sd_nactives;
  82
  83 #ifndef HAVE_WINSOCK
  84         /* In winsock, accept() returns values higher than dtblsize
  85                 so don't bother with this optimization */
  86         int sd_nfds;
  87 #endif
  88
  89         fd_set sd_actives;
  90         fd_set sd_readers;
  91         fd_set sd_writers;
  92 } slap_daemon;
  93
  94
  95
  96 #ifdef HAVE_SLP
  97 /*
  98  * SLP related functions
  99  */
 100 #include <slp.h>
 101
 102 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
 103 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
 104 static char** slapd_srvurls = NULL;
 105 static SLPHandle slapd_hslp = 0;
 106
 107 void slapd_slp_init( const char* urls ) {
 108         int i;
 109
 110         slapd_srvurls = str2charray( urls, " " );
 111
 112         if( slapd_srvurls == NULL ) return;
 113
 114         /* find and expand INADDR_ANY URLs */
 115         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 116                 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 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( LDAP_SRVTYPE_PREFIX ) );
 122                                 strcpy( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX );
 123                                 strcat( slapd_srvurls[i], host );
 124
 125                                 ch_free( host );
 126                         }
 127
 128                 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
 129                         char *host = ldap_pvt_get_fqdn( NULL );
 130                         if ( host != NULL ) {
 131                                 slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
 132                                         strlen( host ) +
 133                                         sizeof( LDAPS_SRVTYPE_PREFIX ) );
 134                                 strcpy( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX );
 135                                 strcat( slapd_srvurls[i], host );
 136
 137                                 ch_free( host );
 138                         }
 139                 }
 140         }
 141
 142         /* open the SLP handle */
 143         SLPOpen( "en", 0, &slapd_hslp );
 144 }
 145
 146 void slapd_slp_deinit() {
 147         if( slapd_srvurls == NULL ) return;
 148
 149         charray_free( slapd_srvurls );
 150         slapd_srvurls = NULL;
 151
 152         /* close the SLP handle */
 153         SLPClose( slapd_hslp );
 154 }
 155
 156 void slapd_slp_regreport(
 157         SLPHandle hslp,
 158         SLPError errcode,
 159         void* cookie )
 160 {
 161         /* empty report */
 162 }
 163
 164 void slapd_slp_reg() {
 165         int i;
 166
 167         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 168                 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
 169                                 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
 170                     strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
 171                                 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
 172                 {
 173                         SLPReg( slapd_hslp,
 174                                 slapd_srvurls[i],
 175                                 SLP_LIFETIME_MAXIMUM,
 176                                 "ldap",
 177                                 "",
 178                                 1,
 179                                 slapd_slp_regreport,
 180                                 NULL );
 181                 }
 182         }
 183 }
 184
 185 void slapd_slp_dereg() {
 186         int i;
 187
 188         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 189                 SLPDereg( slapd_hslp,
 190                         slapd_srvurls[i],
 191                         slapd_slp_regreport,
 192                         NULL );
 193         }
 194 }
 195 #endif /* HAVE_SLP */
 196
 197 /*
 198  * Add a descriptor to daemon control
 199  */
 200 static void slapd_add(ber_socket_t s) {
 201         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 202
 203         assert( !FD_ISSET( s, &slap_daemon.sd_actives ));
 204         assert( !FD_ISSET( s, &slap_daemon.sd_readers ));
 205         assert( !FD_ISSET( s, &slap_daemon.sd_writers ));
 206
 207 #ifndef HAVE_WINSOCK
 208         if (s >= slap_daemon.sd_nfds) {
 209                 slap_daemon.sd_nfds = s + 1;
 210         }
 211 #endif
 212
 213         FD_SET( s, &slap_daemon.sd_actives );
 214         FD_SET( s, &slap_daemon.sd_readers );
 215
 216 #ifdef NEW_LOGGING
 217         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
 218                    "slapd_add: added %ld%s%s\n",
 219                    (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 #ifdef NEW_LOGGING
 238         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
 239                    "slapd_remove: removing %ld%s%s\n",
 240                    (long) s,
 241                    FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 242                    FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : ""  ));
 243 #else
 244         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 245                 (long) s,
 246             FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
 247                 FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 248 #endif
 249         FD_CLR( s, &slap_daemon.sd_actives );
 250         FD_CLR( s, &slap_daemon.sd_readers );
 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_clr_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         FD_CLR( s, &slap_daemon.sd_writers );
 262
 263         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 264         WAKE_LISTENER(wake);
 265 }
 266
 267 void slapd_set_write(ber_socket_t s, int wake) {
 268         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 269
 270         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 271         if (!FD_ISSET(s, &slap_daemon.sd_writers))
 272             FD_SET( (unsigned) s, &slap_daemon.sd_writers );
 273
 274         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 275         WAKE_LISTENER(wake);
 276 }
 277
 278 void slapd_clr_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         FD_CLR( s, &slap_daemon.sd_readers );
 283
 284         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 285         WAKE_LISTENER(wake);
 286 }
 287
 288 void slapd_set_read(ber_socket_t s, int wake) {
 289         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 290
 291         assert( FD_ISSET( s, &slap_daemon.sd_actives) );
 292         if (!FD_ISSET(s, &slap_daemon.sd_readers))
 293             FD_SET( s, &slap_daemon.sd_readers );
 294
 295         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 296         WAKE_LISTENER(wake);
 297 }
 298
 299 static void slapd_close(ber_socket_t s) {
 300 #ifdef NEW_LOGGING
 301         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
 302                    "slapd_close: closing %ld\n", (long)s ));
 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 /* port = 0 indicates AF_LOCAL */
 326 static int slap_get_listener_addresses(
 327         const char *host,
 328         unsigned short port,
 329         struct sockaddr ***sal)
 330 {
 331         struct sockaddr **sap;
 332
 333 #ifdef LDAP_PF_LOCAL
 334         if ( port == 0 ) {
 335                 *sal = ch_malloc(2 * sizeof(void *));
 336                 if (*sal == NULL) {
 337                         return -1;
 338                 }
 339
 340                 sap = *sal;
 341                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 342                 if (*sap == NULL)
 343                         goto errexit;
 344                 sap[1] = NULL;
 345
 346                 if ( strlen(host) >
 347                      (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 348 #ifdef NEW_LOGGING
 349                         LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 350                                    "slap_get_listener_addresses: domain socket path (%s) too long in URL\n",
 351                                    host ));
 352 #else
 353                         Debug( LDAP_DEBUG_ANY,
 354                                "daemon: domain socket path (%s) too long in URL",
 355                                host, 0, 0);
 356 #endif
 357                         goto errexit;
 358                 }
 359
 360                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 361                 (*sap)->sa_family = AF_LOCAL;
 362                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 363         } else
 364 #endif
 365         {
 366 #ifdef HAVE_GETADDRINFO
 367                 struct addrinfo hints, *res, *sai;
 368                 int n, err;
 369                 char serv[7];
 370
 371                 memset( &hints, '\0', sizeof(hints) );
 372                 hints.ai_flags = AI_PASSIVE;
 373                 hints.ai_socktype = SOCK_STREAM;
 374                 hints.ai_family = AF_UNSPEC;
 375                 snprintf(serv, sizeof serv, "%d", port);
 376
 377                 if (err = getaddrinfo(host, serv, &hints, &res)) {
 378 #ifdef NEW_LOGGING
 379                         LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 380                                    "slap_get_listener_addresses: getaddrinfo failed: %s\n",
 381                                    AC_GAI_STRERROR(err) ));
 382 #else
 383                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 384                                 AC_GAI_STRERROR(err), 0, 0);
 385 #endif
 386                         return -1;
 387                 }
 388
 389                 sai = res;
 390                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
 391                         /* EMPTY */ ;
 392                 }
 393                 *sal = ch_malloc(n * sizeof(void *));
 394                 if (*sal == NULL) {
 395                         return -1;
 396                 }
 397
 398                 sap = *sal;
 399
 400                 for ( sai=res; sai; sai=sai->ai_next ) {
 401                         if( sai->ai_addr == NULL ) {
 402                                 freeaddrinfo(res);
 403                                 goto errexit;
 404                         }
 405
 406                         switch (sai->ai_family) {
 407 #  ifdef LDAP_PF_INET6
 408                         case AF_INET6:
 409                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 410                                 if (*sap == NULL) {
 411                                         freeaddrinfo(res);
 412                                         goto errexit;
 413                                 }
 414                                 *(struct sockaddr_in6 *)*sap =
 415                                         *((struct sockaddr_in6 *)sai->ai_addr);
 416                                 break;
 417 #  endif
 418                         case AF_INET:
 419                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 420                                 if (*sap == NULL) {
 421                                         freeaddrinfo(res);
 422                                         goto errexit;
 423                                 }
 424                                 *(struct sockaddr_in *)*sap =
 425                                         *((struct sockaddr_in *)sai->ai_addr);
 426                                 break;
 427                         default:
 428                                 *sap = NULL;
 429                                 break;
 430                         }
 431                         if (*sap != NULL) {
 432                                 (*sap)->sa_family = sai->ai_family;
 433                                 sap++;
 434                         }
 435                 }
 436
 437                 *sap = NULL;
 438                 freeaddrinfo(res);
 439 #else
 440                 struct in_addr in;
 441
 442                 if ( host == NULL ) {
 443                         in.s_addr = htonl(INADDR_ANY);
 444
 445                 } else if ( !inet_aton( host, &in ) ) {
 446                         struct hostent *he = gethostbyname( host );
 447                         if( he == NULL ) {
 448 #ifdef NEW_LOGGING
 449                                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 450                                            "slap_get_listener_addresses: invalid host %s\n",
 451                                            host ));
 452 #else
 453                                 Debug( LDAP_DEBUG_ANY,
 454                                        "daemon: invalid host %s", host, 0, 0);
 455 #endif
 456                                 return -1;
 457                         }
 458                         AC_MEMCPY( &in, he->h_addr, sizeof( in ) );
 459                 }
 460
 461                 *sal = ch_malloc(2 * sizeof(void *));
 462                 if (*sal == NULL) {
 463                         return -1;
 464                 }
 465
 466                 sap = *sal;
 467                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 468                 if (*sap == NULL) {
 469                         goto errexit;
 470                 }
 471                 sap[1] = NULL;
 472
 473                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_in) );
 474                 (*sap)->sa_family = AF_INET;
 475                 ((struct sockaddr_in *)*sap)->sin_port = htons(port);
 476                 ((struct sockaddr_in *)*sap)->sin_addr = in;
 477 #endif
 478         }
 479
 480         return 0;
 481
 482 errexit:
 483         slap_free_listener_addresses(*sal);
 484         return -1;
 485 }
 486
 487 static Listener * slap_open_listener(
 488         const char* url )
 489 {
 490         int     tmp, rc;
 491         Listener l;
 492         Listener *li;
 493         LDAPURLDesc *lud;
 494         unsigned short port;
 495         int err, addrlen;
 496         struct sockaddr **sal, **psal;
 497         int socktype = SOCK_STREAM;     /* default to COTS */
 498
 499         rc = ldap_url_parse( url, &lud );
 500
 501         if( rc != LDAP_URL_SUCCESS ) {
 502 #ifdef NEW_LOGGING
 503                 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 504                            "slap_open_listener: listen URL \"%s\" parse error %d\n",
 505                            url, rc ));
 506 #else
 507                 Debug( LDAP_DEBUG_ANY,
 508                         "daemon: listen URL \"%s\" parse error=%d\n",
 509                         url, rc, 0 );
 510 #endif
 511                 return NULL;
 512         }
 513
 514 #ifndef HAVE_TLS
 515         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 516 #ifdef NEW_LOGGING
 517                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 518                            "slap_open_listener: TLS is not supported (%s)\n",
 519                            url ));
 520 #else
 521                 Debug( LDAP_DEBUG_ANY,
 522                         "daemon: TLS not supported (%s)\n",
 523                         url, 0, 0 );
 524 #endif
 525                 ldap_free_urldesc( lud );
 526                 return NULL;
 527         }
 528
 529         if(! lud->lud_port ) {
 530                 lud->lud_port = LDAP_PORT;
 531         }
 532
 533 #else
 534         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 535
 536         if(! lud->lud_port ) {
 537                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 538         }
 539 #endif
 540
 541         port = (unsigned short) lud->lud_port;
 542
 543         tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
 544         if ( tmp == LDAP_PROTO_IPC ) {
 545 #ifdef LDAP_PF_LOCAL
 546                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 547                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 548                 } else {
 549                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 550                 }
 551 #else
 552
 553 #ifdef NEW_LOGGING
 554                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 555                            "slap_open_listener: URL scheme is not supported: %s\n",
 556                            url ));
 557 #else
 558                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 559                         url, 0, 0);
 560 #endif
 561                 ldap_free_urldesc( lud );
 562                 return NULL;
 563 #endif
 564         } else {
 565 #ifdef LDAP_CONNECTIONLESS
 566                 if ( tmp == LDAP_PROTO_UDP )
 567                         l.sl_is_udp = 1;
 568 #endif
 569                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 570                         || strcmp(lud->lud_host, "*") == 0 )
 571                 {
 572                         err = slap_get_listener_addresses(NULL, port, &sal);
 573                 } else {
 574                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 575                 }
 576         }
 577
 578         ldap_free_urldesc( lud );
 579         if ( err ) {
 580                 return NULL;
 581         }
 582
 583         psal = sal;
 584         while ( *sal != NULL ) {
 585                 switch( (*sal)->sa_family ) {
 586                 case AF_INET:
 587 #ifdef LDAP_PF_INET6
 588                 case AF_INET6:
 589 #endif
 590 #ifdef LDAP_PF_LOCAL
 591                 case AF_LOCAL:
 592 #endif
 593                         break;
 594                 default:
 595                         sal++;
 596                         continue;
 597                 }
 598 #ifdef LDAP_CONNECTIONLESS
 599                 if (l.sl_is_udp)
 600                     socktype = SOCK_DGRAM;
 601 #endif
 602                 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
 603                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 604                         int err = sock_errno();
 605 #ifdef NEW_LOGGING
 606                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 607                                    "slap_open_listener: socket() failed errno=%d (%s)\n",
 608                                    err, sock_errstr(err) ));
 609 #else
 610                         Debug( LDAP_DEBUG_ANY,
 611                                 "daemon: socket() failed errno=%d (%s)\n", err,
 612                                 sock_errstr(err), 0 );
 613 #endif
 614                         sal++;
 615                         continue;
 616                 }
 617 #ifndef HAVE_WINSOCK
 618                 if ( l.sl_sd >= dtblsize ) {
 619 #ifdef NEW_LOGGING
 620                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 621                                    "slap_open_listener: listener descriptor %ld is too great %ld\n",
 622                                    (long)l.sl_sd, (long)dtblsize ));
 623 #else
 624                         Debug( LDAP_DEBUG_ANY,
 625                                "daemon: listener descriptor %ld is too great %ld\n",
 626                                (long) l.sl_sd, (long) dtblsize, 0 );
 627 #endif
 628                         tcp_close( l.sl_sd );
 629                         sal++;
 630                         continue;
 631                 }
 632 #endif
 633 #ifdef LDAP_PF_LOCAL
 634                 if ( (*sal)->sa_family == AF_LOCAL ) {
 635                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 636                 } else
 637 #endif
 638                 {
 639 #ifdef SO_REUSEADDR
 640                         /* enable address reuse */
 641                         tmp = 1;
 642                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 643                                          (char *) &tmp, sizeof(tmp) );
 644                         if ( rc == AC_SOCKET_ERROR ) {
 645                                 int err = sock_errno();
 646 #ifdef NEW_LOGGING
 647                                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 648                                            "slap_open_listener: setsockopt( %ld, SO_REUSEADDR ) failed errno %d (%s)\n",
 649                                            (long)l.sl_sd, err, sock_errstr(err) ));
 650 #else
 651                                 Debug( LDAP_DEBUG_ANY,
 652                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 653                                        (long) l.sl_sd, err, sock_errstr(err) );
 654 #endif
 655                         }
 656 #endif
 657                 }
 658
 659                 switch( (*sal)->sa_family ) {
 660                 case AF_INET:
 661                         addrlen = sizeof(struct sockaddr_in);
 662                         break;
 663 #ifdef LDAP_PF_INET6
 664                 case AF_INET6:
 665                         addrlen = sizeof(struct sockaddr_in6);
 666                         break;
 667 #endif
 668 #ifdef LDAP_PF_LOCAL
 669                 case AF_LOCAL:
 670                         addrlen = sizeof(struct sockaddr_un);
 671                         break;
 672 #endif
 673                 }
 674
 675                 if (!bind(l.sl_sd, *sal, addrlen))
 676                         break;
 677                 err = sock_errno();
 678 #ifdef NEW_LOGGING
 679                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 680                            "slap_open_listener: bind(%ld) failed errno=%d (%s)\n",
 681                            (long)l.sl_sd, err, sock_errstr(err) ));
 682 #else
 683                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 684                        (long) l.sl_sd, err, sock_errstr(err) );
 685 #endif
 686                 tcp_close( l.sl_sd );
 687                 sal++;
 688         } /* while ( *sal != NULL ) */
 689
 690         if ( *sal == NULL ) {
 691 #ifdef NEW_LOGGING
 692                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 693                            "slap_open_listener: bind(%ld) failed.\n", (long)l.sl_sd ));
 694 #else
 695                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed\n",
 696                         (long) l.sl_sd, 0, 0 );
 697 #endif
 698                 slap_free_listener_addresses(psal);
 699                 return NULL;
 700         }
 701
 702         switch ( (*sal)->sa_family ) {
 703 #ifdef LDAP_PF_LOCAL
 704         case AF_LOCAL: {
 705                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 706                 if ( chmod( addr, S_IRWXU ) < 0 ) {
 707                         int err = sock_errno();
 708 #ifdef NEW_LOGGING
 709                         LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 710                                    "slap_open_listener: fchmod(%ld) failed errno=%d (%s)\n",
 711                                    (long)l.sl_sd, err, sock_errstr(err) ));
 712 #else
 713                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 714                                (long) l.sl_sd, err, sock_errstr(err) );
 715 #endif
 716                         tcp_close( l.sl_sd );
 717                         slap_free_listener_addresses(psal);
 718                         return NULL;
 719                 }
 720                 l.sl_name = ch_malloc( strlen(addr) + sizeof("PATH=") );
 721                 sprintf( l.sl_name, "PATH=%s", addr );
 722         } break;
 723 #endif /* LDAP_PF_LOCAL */
 724
 725         case AF_INET: {
 726                 char *s;
 727 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
 728                 char addr[INET_ADDRSTRLEN];
 729                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
 730                            addr, sizeof(addr) );
 731                 s = addr;
 732                 port = ((struct sockaddr_in *)*sal) ->sin_port;
 733 #else
 734                 s = inet_ntoa( l.sl_addr.sin_addr );
 735                 port = l.sl_addr.sin_port;
 736 #endif
 737                 l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65535") );
 738                 sprintf( l.sl_name, "IP=%s:%d",
 739                          s != NULL ? s : "unknown" , port );
 740         } break;
 741
 742 #ifdef LDAP_PF_INET6
 743         case AF_INET6: {
 744                 char addr[INET6_ADDRSTRLEN];
 745                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
 746                            addr, sizeof addr);
 747                 port = ((struct sockaddr_in6 *)*sal)->sin6_port;
 748                 l.sl_name = ch_malloc( strlen(addr) + sizeof("IP= 65535") );
 749                 sprintf( l.sl_name, "IP=%s %d", addr, port );
 750         } break;
 751 #endif /* LDAP_PF_INET6 */
 752
 753         default:
 754 #ifdef NEW_LOGGING
 755                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 756                            "slap_open_listener: unsupported address family (%d)\n",
 757                            (int)(*sal)->sa_family ));
 758 #else
 759                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 760                         (int) (*sal)->sa_family, 0, 0 );
 761 #endif
 762                 break;
 763         }
 764
 765         slap_free_listener_addresses(psal);
 766
 767         l.sl_url = ch_strdup( url );
 768         li = ch_malloc( sizeof( Listener ) );
 769         *li = l;
 770
 771 #ifdef NEW_LOGGING
 772         LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
 773                    "slap_open_listener: daemon initialzed %s\n", l.sl_url ));
 774 #else
 775         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 776                 l.sl_url, 0, 0 );
 777 #endif
 778         return li;
 779 }
 780
 781 static int sockinit(void);
 782 static int sockdestroy(void);
 783
 784 int slapd_daemon_init( const char *urls )
 785 {
 786         int i, rc;
 787         char **u;
 788
 789 #ifdef NEW_LOGGING
 790         LDAP_LOG(( "connection", LDAP_LEVEL_ARGS,
 791                    "slapd_daemon_init: %s\n",
 792                    urls ? urls : "<null>" ));
 793 #else
 794         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 795                 urls ? urls : "<null>", 0, 0 );
 796 #endif
 797         if( (rc = sockinit()) != 0 ) {
 798                 return rc;
 799         }
 800
 801 #ifdef HAVE_SYSCONF
 802         dtblsize = sysconf( _SC_OPEN_MAX );
 803 #elif HAVE_GETDTABLESIZE
 804         dtblsize = getdtablesize();
 805 #else
 806         dtblsize = FD_SETSIZE;
 807 #endif
 808
 809 #ifdef FD_SETSIZE
 810         if(dtblsize > FD_SETSIZE) {
 811                 dtblsize = FD_SETSIZE;
 812         }
 813 #endif  /* !FD_SETSIZE */
 814
 815         /* open a pipe (or something equivalent connected to itself).
 816          * we write a byte on this fd whenever we catch a signal. The main
 817          * loop will be select'ing on this socket, and will wake up when
 818          * this byte arrives.
 819          */
 820         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 821 #ifdef NEW_LOGGING
 822                 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 823                            "slap_daemon_init: lutil_pair() failed rc=%d\n", rc ));
 824 #else
 825                 Debug( LDAP_DEBUG_ANY,
 826                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 827 #endif
 828                 return rc;
 829         }
 830
 831         FD_ZERO( &slap_daemon.sd_readers );
 832         FD_ZERO( &slap_daemon.sd_writers );
 833
 834         if( urls == NULL ) {
 835                 urls = "ldap:///";
 836         }
 837
 838         u = str2charray( urls, " " );
 839
 840         if( u == NULL || u[0] == NULL ) {
 841 #ifdef NEW_LOGGING
 842                 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 843                            "slap_daemon_init: no urls (%s) provided.\n", urls ));
 844 #else
 845                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
 846                         urls, 0, 0 );
 847 #endif
 848                 return -1;
 849         }
 850
 851         for( i=0; u[i] != NULL; i++ ) {
 852 #ifdef NEW_LOGGING
 853                 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
 854                            "slap_daemon_init: listen on %s\n.", u[i] ));
 855 #else
 856                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
 857                         u[i], 0, 0 );
 858 #endif
 859         }
 860
 861         if( i == 0 ) {
 862 #ifdef NEW_LOGGING
 863                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 864                            "slap_daemon_init: no listeners to open (%s)\n", urls ));
 865 #else
 866                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
 867                         urls, 0, 0 );
 868 #endif
 869                 charray_free( u );
 870                 return -1;
 871         }
 872
 873 #ifdef NEW_LOGGING
 874         LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 875                    "slap_daemon_init: %d listeners to open...\n", i ));
 876 #else
 877         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
 878                 i, 0, 0 );
 879 #endif
 880         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
 881
 882         for(i = 0; u[i] != NULL; i++ ) {
 883                 slap_listeners[i] = slap_open_listener( u[i] );
 884
 885                 if( slap_listeners[i] == NULL ) {
 886                         charray_free( u );
 887                         return -1;
 888                 }
 889         }
 890         slap_listeners[i] = NULL;
 891
 892 #ifdef NEW_LOGGING
 893         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
 894                    "slap_daemon_init: %d listeners opened\n", i ));
 895 #else
 896         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
 897                 i, 0, 0 );
 898 #endif
 899
 900 #ifdef HAVE_SLP
 901         slapd_slp_init( urls );
 902         slapd_slp_reg();
 903 #endif
 904
 905         charray_free( u );
 906         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
 907         return !i;
 908 }
 909
 910
 911 int
 912 slapd_daemon_destroy(void)
 913 {
 914         connections_destroy();
 915         tcp_close( wake_sds[1] );
 916         tcp_close( wake_sds[0] );
 917         sockdestroy();
 918
 919 #ifdef HAVE_SLP
 920         slapd_slp_dereg();
 921         slapd_slp_deinit();
 922 #endif
 923
 924         return 0;
 925 }
 926
 927
 928 static void *
 929 slapd_daemon_task(
 930         void *ptr
 931 )
 932 {
 933         int l;
 934         time_t  last_idle_check = slap_get_time();
 935         time( &starttime );
 936
 937         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 938                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 939                         continue;
 940 #ifdef LDAP_CONNECTIONLESS
 941                 /* Since this is connectionless, the data port is the
 942                  * listening port. The listen() and accept() calls
 943                  * are unnecessary.
 944                  */
 945                 if ( slap_listeners[l]->sl_is_udp )
 946                 {
 947                         slapd_add( slap_listeners[l]->sl_sd );
 948                         continue;
 949                 }
 950 #endif
 951
 952                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
 953                         int err = sock_errno();
 954 #ifdef NEW_LOGGING
 955                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 956                                    "slapd_daemon_task: listen( %s, 5 ) failed errno=%d (%s)\n",
 957                                    slap_listeners[l]->sl_url, err, sock_errstr(err) ));
 958 #else
 959                         Debug( LDAP_DEBUG_ANY,
 960                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
 961                                         slap_listeners[l]->sl_url, err,
 962                                         sock_errstr(err) );
 963 #endif
 964                         return( (void*)-1 );
 965                 }
 966
 967                 slapd_add( slap_listeners[l]->sl_sd );
 968         }
 969
 970 #ifdef HAVE_NT_SERVICE_MANAGER
 971         if ( started_event != NULL ) {
 972                 ldap_pvt_thread_cond_signal( &started_event );
 973         }
 974 #endif
 975         /* initialization complete. Here comes the loop. */
 976
 977         while ( !slapd_shutdown ) {
 978                 ber_socket_t i;
 979                 int ns;
 980                 int at;
 981                 ber_socket_t nfds;
 982 #define SLAPD_EBADF_LIMIT 16
 983                 int ebadf = 0;
 984
 985 #define SLAPD_IDLE_CHECK_LIMIT 4
 986                 time_t  now = slap_get_time();
 987
 988
 989                 fd_set                  readfds;
 990                 fd_set                  writefds;
 991                 Sockaddr                from;
 992
 993 #if defined(SLAPD_RLOOKUPS)
 994         struct hostent          *hp;
 995 #endif
 996                 struct timeval          zero;
 997                 struct timeval          *tvp;
 998
 999                 if( global_idletimeout > 0 && difftime(
1000                         last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT,
1001                         now ) < 0 )
1002                 {
1003                         connections_timeout_idle(now);
1004                 }
1005
1006                 FD_ZERO( &writefds );
1007                 FD_ZERO( &readfds );
1008
1009                 zero.tv_sec = 0;
1010                 zero.tv_usec = 0;
1011
1012                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1013
1014 #ifdef FD_SET_MANUAL_COPY
1015                 for( s = 0; s < nfds; s++ ) {
1016                         if(FD_ISSET( &slap_sd_readers, s )) {
1017                                 FD_SET( s, &readfds );
1018                         }
1019                         if(FD_ISSET( &slap_sd_writers, s )) {
1020                                 FD_SET( s, &writefds );
1021                         }
1022                 }
1023 #else
1024                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
1025                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
1026 #endif
1027                 assert(!FD_ISSET(wake_sds[0], &readfds));
1028                 FD_SET( wake_sds[0], &readfds );
1029
1030                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1031                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1032                                 continue;
1033                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
1034                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
1035                 }
1036
1037 #ifndef HAVE_WINSOCK
1038                 nfds = slap_daemon.sd_nfds;
1039 #else
1040                 nfds = dtblsize;
1041 #endif
1042
1043                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1044
1045                 at = ldap_pvt_thread_pool_backload(&connection_pool);
1046
1047 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
1048                 tvp = NULL;
1049 #else
1050                 tvp = at ? &zero : NULL;
1051 #endif
1052
1053                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1054                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1055                                 continue;
1056
1057 #ifdef NEW_LOGGING
1058                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1059                                    "slapd_daemon_task: select: listen=%d active_threads=%d tvp=%s\n",
1060                                    slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "zero" ));
1061 #else
1062                         Debug( LDAP_DEBUG_CONNS,
1063                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1064                                         slap_listeners[l]->sl_sd, at,
1065                                         tvp == NULL ? "NULL" : "zero" );
1066 #endif
1067                 }
1068
1069                 switch(ns = select( nfds, &readfds,
1070 #ifdef HAVE_WINSOCK
1071                         /* don't pass empty fd_set */
1072                         ( writefds.fd_count > 0 ? &writefds : NULL ),
1073 #else
1074                         &writefds,
1075 #endif
1076                         NULL, tvp ))
1077                 {
1078                 case -1: {      /* failure - try again */
1079                                 int err = sock_errno();
1080
1081                                 if( err == EBADF
1082 #ifdef WSAENOTSOCK
1083                                         /* you'd think this would be EBADF */
1084                                         || err == WSAENOTSOCK
1085 #endif
1086                                 ) {
1087                                         if (++ebadf < SLAPD_EBADF_LIMIT)
1088                                                 continue;
1089                                 }
1090
1091                                 if( err != EINTR ) {
1092 #ifdef NEW_LOGGING
1093                                         LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1094                                                    "slapd_daemon_task: select failed (%d): %s\n",
1095                                                    err, sock_errstr(err) ));
1096 #else
1097                                         Debug( LDAP_DEBUG_CONNS,
1098                                                 "daemon: select failed (%d): %s\n",
1099                                                 err, sock_errstr(err), 0 );
1100 #endif
1101                                         slapd_shutdown = -1;
1102                                 }
1103                         }
1104                         continue;
1105
1106                 case 0:         /* timeout - let threads run */
1107                         ebadf = 0;
1108 #ifdef NEW_LOGGING
1109                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1110                                    "slapd_daemon_task: select timeout - yielding\n" ));
1111 #else
1112                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1113                             0, 0, 0 );
1114 #endif
1115                         ldap_pvt_thread_yield();
1116                         continue;
1117
1118                 default:        /* something happened - deal with it */
1119                         if( slapd_shutdown ) continue;
1120
1121                         ebadf = 0;
1122 #ifdef NEW_LOGGING
1123                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1124                                    "slapd_daemon_task: activity on %d descriptors\n", ns ));
1125 #else
1126                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
1127                                 ns, 0, 0 );
1128 #endif
1129                         /* FALL THRU */
1130                 }
1131
1132                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
1133                         char c[BUFSIZ];
1134                         tcp_read( wake_sds[0], c, sizeof(c) );
1135 #ifdef NO_THREADS
1136                         waking = 0;
1137 #endif
1138                         continue;
1139                 }
1140
1141                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1142                         ber_socket_t s;
1143                         socklen_t len = sizeof(from);
1144                         long id;
1145                         slap_ssf_t ssf = 0;
1146                         char *authid = NULL;
1147
1148                         char    *dnsname;
1149                         char    *peeraddr;
1150 #ifdef LDAP_PF_LOCAL
1151                         char    peername[MAXPATHLEN + sizeof("PATH=")];
1152 #elif defined(LDAP_PF_INET6)
1153                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1154 #else
1155                         char    peername[sizeof("IP=255.255.255.255:65336")];
1156 #endif /* LDAP_PF_LOCAL */
1157
1158                         peername[0] = '\0';
1159
1160                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1161                                 continue;
1162
1163                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
1164                                 continue;
1165
1166 #ifdef LDAP_CONNECTIONLESS
1167                         if ( slap_listeners[l]->sl_is_udp )
1168                         {
1169                         /* The first time we receive a query, we set this
1170                          * up as a "connection". It remains open for the life
1171                          * of the slapd.
1172                          */
1173                                 if ( slap_listeners[l]->sl_is_udp < 2 )
1174                                 {
1175                                     id = connection_init(
1176                                         slap_listeners[l]->sl_sd,
1177                                         slap_listeners[l]->sl_url, "", "",
1178                                         slap_listeners[l]->sl_name,
1179                                         2, ssf, authid );
1180                                     slap_listeners[l]->sl_is_udp++;
1181                                 }
1182                                 continue;
1183                         }
1184 #endif
1185
1186                         s = accept( slap_listeners[l]->sl_sd,
1187                                 (struct sockaddr *) &from, &len );
1188                         if ( s == AC_SOCKET_INVALID ) {
1189                                 int err = sock_errno();
1190 #ifdef NEW_LOGGING
1191                                 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1192                                            "slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
1193                                            (long)slap_listeners[l]->sl_sd, err, sock_errstr(err) ));
1194 #else
1195                                 Debug( LDAP_DEBUG_ANY,
1196                                     "daemon: accept(%ld) failed errno=%d (%s)\n",
1197                                     (long) slap_listeners[l]->sl_sd, err,
1198                                     sock_errstr(err) );
1199 #endif
1200                                 ldap_pvt_thread_yield();
1201                                 continue;
1202                         }
1203
1204 #ifndef HAVE_WINSOCK
1205                         /* make sure descriptor number isn't too great */
1206                         if ( s >= dtblsize ) {
1207 #ifdef NEW_LOGGING
1208                                 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1209                                            "slapd_daemon_task: %ld beyond descriptor table size %ld\n",
1210                                            (long)s, (long)dtblsize ));
1211 #else
1212                                 Debug( LDAP_DEBUG_ANY,
1213                                         "daemon: %ld beyond descriptor table size %ld\n",
1214                                         (long) s, (long) dtblsize, 0 );
1215 #endif
1216                                 slapd_close(s);
1217                                 ldap_pvt_thread_yield();
1218                                 continue;
1219                         }
1220 #endif
1221
1222 #ifdef LDAP_DEBUG
1223                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1224
1225                         /* newly accepted stream should not be in any of the FD SETS */
1226                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
1227                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
1228                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
1229
1230                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1231 #endif
1232
1233 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1234 #ifdef LDAP_PF_LOCAL
1235                         /* for IPv4 and IPv6 sockets only */
1236                         if ( from.sa_addr.sa_family != AF_LOCAL )
1237 #endif /* LDAP_PF_LOCAL */
1238                         {
1239                                 int rc;
1240                                 int tmp;
1241 #ifdef SO_KEEPALIVE
1242                                 /* enable keep alives */
1243                                 tmp = 1;
1244                                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1245                                         (char *) &tmp, sizeof(tmp) );
1246                                 if ( rc == AC_SOCKET_ERROR ) {
1247                                         int err = sock_errno();
1248 #ifdef NEW_LOGGING
1249                                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1250                                                    "slapd_daemon_task: setsockopt( %ld, SO_KEEPALIVE) failed errno=%d (%s)\n",
1251                                                    (long)s, err, sock_errstr(err) ));
1252 #else
1253                                         Debug( LDAP_DEBUG_ANY,
1254                                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1255                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1256 #endif
1257                                 }
1258 #endif
1259 #ifdef TCP_NODELAY
1260                                 /* enable no delay */
1261                                 tmp = 1;
1262                                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1263                                         (char *)&tmp, sizeof(tmp) );
1264                                 if ( rc == AC_SOCKET_ERROR ) {
1265                                         int err = sock_errno();
1266 #ifdef NEW_LOGGING
1267                                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1268                                                    "slapd_daemon_task: setsockopt( %ld, TCP_NODELAY) failed errno=%d (%s)\n",
1269                                                    (long)s, err, sock_errstr(err) ));
1270 #else
1271                                         Debug( LDAP_DEBUG_ANY,
1272                                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1273                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1274 #endif
1275                                 }
1276 #endif
1277                         }
1278 #endif
1279
1280 #ifdef NEW_LOGGING
1281                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1282                                    "slapd_daemon_task: new connection on %ld\n", (long)s ));
1283 #else
1284                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
1285                                 (long) s, 0, 0 );
1286 #endif
1287                         switch ( from.sa_addr.sa_family ) {
1288 #  ifdef LDAP_PF_LOCAL
1289                         case AF_LOCAL:
1290                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1291                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
1292                                 break;
1293 #endif /* LDAP_PF_LOCAL */
1294
1295 #  ifdef LDAP_PF_INET6
1296                         case AF_INET6:
1297                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1298                                 peeraddr = inet_ntoa( *((struct in_addr *)
1299                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1300                                 sprintf( peername, "IP=%s:%d",
1301                                          peeraddr != NULL ? peeraddr : "unknown",
1302                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1303                         } else {
1304                                 char addr[INET6_ADDRSTRLEN];
1305                                 sprintf( peername, "IP=%s %d",
1306                                          inet_ntop( AF_INET6,
1307                                                     &from.sa_in6_addr.sin6_addr,
1308                                                     addr, sizeof addr) ? addr : "unknown",
1309                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1310                         }
1311                         break;
1312 #  endif /* LDAP_PF_INET6 */
1313
1314                         case AF_INET:
1315                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1316                         sprintf( peername, "IP=%s:%d",
1317                                 peeraddr != NULL ? peeraddr : "unknown",
1318                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1319                                 break;
1320
1321                         default:
1322                                 slapd_close(s);
1323                                 continue;
1324                         }
1325
1326                         if ( ( from.sa_addr.sa_family == AF_INET )
1327 #ifdef LDAP_PF_INET6
1328                                 || ( from.sa_addr.sa_family == AF_INET6 )
1329 #endif
1330                         ) {
1331 #ifdef SLAPD_RLOOKUPS
1332 #  ifdef LDAP_PF_INET6
1333                                 if ( from.sa_addr.sa_family == AF_INET6 )
1334                                         hp = gethostbyaddr(
1335                                                 (char *)&(from.sa_in6_addr.sin6_addr),
1336                                                 sizeof(from.sa_in6_addr.sin6_addr),
1337                                                 AF_INET6 );
1338                                 else
1339 #  endif /* LDAP_PF_INET6 */
1340                                 hp = gethostbyaddr(
1341                                         (char *) &(from.sa_in_addr.sin_addr),
1342                                         sizeof(from.sa_in_addr.sin_addr),
1343                                         AF_INET );
1344                                 dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
1345 #else
1346                                 dnsname = NULL;
1347 #endif /* SLAPD_RLOOKUPS */
1348
1349 #ifdef HAVE_TCPD
1350                                 if ( !hosts_ctl("slapd",
1351                                                 dnsname != NULL ? dnsname : STRING_UNKNOWN,
1352                                                 peeraddr != NULL ? peeraddr : STRING_UNKNOWN,
1353                                                 STRING_UNKNOWN ))
1354                                 {
1355                                         /* DENY ACCESS */
1356                                         Statslog( LDAP_DEBUG_ANY,
1357                                                 "fd=%ld host access from %s (%s) denied.\n",
1358                                                 (long) s,
1359                                                 dnsname != NULL ? dnsname : "unknown",
1360                                                 peeraddr != NULL ? peeraddr : "unknown",
1361                                                 0, 0 );
1362                                         slapd_close(s);
1363                                         continue;
1364                                 }
1365 #endif /* HAVE_TCPD */
1366                         }
1367
1368                         id = connection_init(s,
1369                                 slap_listeners[l]->sl_url,
1370                                 dnsname != NULL ? dnsname : "unknown",
1371                                 peername,
1372                                 slap_listeners[l]->sl_name,
1373 #ifdef HAVE_TLS
1374                                 slap_listeners[l]->sl_is_tls,
1375 #else
1376                                 0,
1377 #endif
1378                                 ssf,
1379                                 authid );
1380
1381                         if( authid ) ch_free(authid);
1382
1383                         if( id < 0 ) {
1384 #ifdef NEW_LOGGING
1385                                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1386                                            "slapd_daemon_task: connection_init(%ld, %s, %s) failed.\n",
1387                                            (long)s, peername, slap_listeners[l]->sl_name ));
1388 #else
1389                                 Debug( LDAP_DEBUG_ANY,
1390                                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1391                                         (long) s,
1392                                         peername,
1393                                         slap_listeners[l]->sl_name );
1394 #endif
1395                                 slapd_close(s);
1396                                 continue;
1397                         }
1398
1399                         Statslog( LDAP_DEBUG_STATS,
1400                                 "daemon: conn=%ld fd=%ld connection from %s (%s) accepted.\n",
1401                                 id, (long) s,
1402                                 peername,
1403                                 slap_listeners[l]->sl_name,
1404                                 0 );
1405
1406                         slapd_add( s );
1407                         continue;
1408                 }
1409
1410 #ifdef LDAP_DEBUG
1411 #ifdef NEW_LOGGING
1412                 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1413                            "slapd_daemon_task: activity on " ));
1414 #else
1415                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1416 #endif
1417 #ifdef HAVE_WINSOCK
1418                 for ( i = 0; i < readfds.fd_count; i++ ) {
1419 #ifdef NEW_LOGGING
1420                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1421                                    " %d%s", readfds.fd_array[i], "r", 0 ));
1422 #else
1423                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1424                                 readfds.fd_array[i], "r", 0 );
1425 #endif
1426                 }
1427                 for ( i = 0; i < writefds.fd_count; i++ ) {
1428 #ifdef NEW_LOGGING
1429                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1430                                    " %d%s", writefds.fd_array[i], "w" ));
1431 #else
1432                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1433                                 writefds.fd_array[i], "w", 0 );
1434 #endif
1435                 }
1436
1437 #else
1438                 for ( i = 0; i < nfds; i++ ) {
1439                         int     r, w;
1440                         int     is_listener = 0;
1441
1442                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1443                                 if ( i == slap_listeners[l]->sl_sd ) {
1444 #ifdef LDAP_CONNECTIONLESS
1445                                 /* The listener is the data port. Don't
1446                                  * skip it.
1447                                  */
1448                                         if (slap_listeners[l]->sl_is_udp)
1449                                                 continue;
1450 #endif
1451                                         is_listener = 1;
1452                                         break;
1453                                 }
1454                         }
1455                         if ( is_listener ) {
1456                                 continue;
1457                         }
1458                         r = FD_ISSET( i, &readfds );
1459                         w = FD_ISSET( i, &writefds );
1460                         if ( r || w ) {
1461 #ifdef NEW_LOGGING
1462                                 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1463                                            " %d%s%s", i,
1464                                            r ? "r" : "", w ? "w" : "" ));
1465 #else
1466                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1467                                     r ? "r" : "", w ? "w" : "" );
1468 #endif
1469                         }
1470                 }
1471 #endif
1472 #ifdef NEW_LOGGING
1473                 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2, "\n" ));
1474 #else
1475                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1476 #endif
1477
1478 #endif
1479
1480                 /* loop through the writers */
1481 #ifdef HAVE_WINSOCK
1482                 for ( i = 0; i < writefds.fd_count; i++ )
1483 #else
1484                 for ( i = 0; i < nfds; i++ )
1485 #endif
1486                 {
1487                         ber_socket_t wd;
1488                         int is_listener = 0;
1489 #ifdef HAVE_WINSOCK
1490                         wd = writefds.fd_array[i];
1491 #else
1492                         if( ! FD_ISSET( i, &writefds ) ) {
1493                                 continue;
1494                         }
1495                         wd = i;
1496 #endif
1497
1498                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1499                                 if ( i == slap_listeners[l]->sl_sd ) {
1500 #ifdef LDAP_CONNECTIONLESS
1501                                         if (slap_listeners[l]->sl_is_udp)
1502                                                 continue;
1503 #endif
1504                                         is_listener = 1;
1505                                         break;
1506                                 }
1507                         }
1508                         if ( is_listener ) {
1509                                 continue;
1510                         }
1511 #ifdef NEW_LOGGING
1512                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1513                                    "slapd_daemon_task: write active on %d\n", wd ));
1514 #else
1515                         Debug( LDAP_DEBUG_CONNS,
1516                                 "daemon: write active on %d\n",
1517                                 wd, 0, 0 );
1518 #endif
1519                         /*
1520                          * NOTE: it is possible that the connection was closed
1521                          * and that the stream is now inactive.
1522                          * connection_write() must valid the stream is still
1523                          * active.
1524                          */
1525
1526                         if ( connection_write( wd ) < 0 ) {
1527                                 FD_CLR( (unsigned) wd, &readfds );
1528                                 slapd_close( wd );
1529                         }
1530                 }
1531
1532 #ifdef HAVE_WINSOCK
1533                 for ( i = 0; i < readfds.fd_count; i++ )
1534 #else
1535                 for ( i = 0; i < nfds; i++ )
1536 #endif
1537                 {
1538                         ber_socket_t rd;
1539                         int is_listener = 0;
1540
1541 #ifdef HAVE_WINSOCK
1542                         rd = readfds.fd_array[i];
1543 #else
1544                         if( ! FD_ISSET( i, &readfds ) ) {
1545                                 continue;
1546                         }
1547                         rd = i;
1548 #endif
1549
1550                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1551                                 if ( rd == slap_listeners[l]->sl_sd ) {
1552 #ifdef LDAP_CONNECTIONLESS
1553                                         if (slap_listeners[l]->sl_is_udp)
1554                                                 continue;
1555 #endif
1556                                         is_listener = 1;
1557                                         break;
1558                                 }
1559                         }
1560                         if ( is_listener ) {
1561                                 continue;
1562                         }
1563
1564 #ifdef NEW_LOGGING
1565                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1566                                    "slapd_daemon_task: read activity on %d\n", rd ));
1567 #else
1568                         Debug ( LDAP_DEBUG_CONNS,
1569                                 "daemon: read activity on %d\n", rd, 0, 0 );
1570 #endif
1571                         /*
1572                          * NOTE: it is possible that the connection was closed
1573                          * and that the stream is now inactive.
1574                          * connection_read() must valid the stream is still
1575                          * active.
1576                          */
1577
1578                         if ( connection_read( rd ) < 0 ) {
1579                                 slapd_close( rd );
1580                         }
1581                 }
1582                 ldap_pvt_thread_yield();
1583         }
1584
1585         if( slapd_shutdown > 0 ) {
1586 #ifdef NEW_LOGGING
1587                 LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1588                            "slapd_daemon_task: shutdown requested and initiated.\n"));
1589 #else
1590                 Debug( LDAP_DEBUG_TRACE,
1591                         "daemon: shutdown requested and initiated.\n",
1592                         0, 0, 0 );
1593 #endif
1594
1595         } else if ( slapd_shutdown < 0 ) {
1596 #ifdef HAVE_NT_SERVICE_MANAGER
1597                 if (slapd_shutdown == -1)
1598                 {
1599 #ifdef NEW_LOGGING
1600                         LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1601                                    "slapd_daemon_task: shutdown initiated by Service Manager.\n"));
1602 #else
1603                         Debug( LDAP_DEBUG_TRACE,
1604                                "daemon: shutdown initiated by Service Manager.\n",
1605                                0, 0, 0);
1606 #endif
1607                 }
1608                 else
1609 #endif
1610                 {
1611 #ifdef NEW_LOGGING
1612                         LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1613                                    "slapd_daemon_task: abnormal condition, shutdown initiated.\n" ));
1614 #else
1615                         Debug( LDAP_DEBUG_TRACE,
1616                                "daemon: abnormal condition, shutdown initiated.\n",
1617                                0, 0, 0 );
1618 #endif
1619                 }
1620         } else {
1621 #ifdef NEW_LOGGING
1622                 LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1623                            "slapd_daemon_task: no active streams, shutdown initiated.\n" ));
1624 #else
1625                 Debug( LDAP_DEBUG_TRACE,
1626                        "daemon: no active streams, shutdown initiated.\n",
1627                        0, 0, 0 );
1628 #endif
1629         }
1630
1631         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1632                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1633 #ifdef LDAP_PF_LOCAL
1634                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1635                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1636                         }
1637 #endif /* LDAP_PF_LOCAL */
1638                         slapd_close( slap_listeners[l]->sl_sd );
1639                         break;
1640                 }
1641         }
1642
1643 #ifdef NEW_LOGGING
1644         LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1645                    "slapd_daemon_task: shutdown waiting for %d threads to terminate.\n",
1646                    ldap_pvt_thread_pool_backload(&connection_pool) ));
1647 #else
1648         Debug( LDAP_DEBUG_ANY,
1649             "slapd shutdown: waiting for %d threads to terminate\n",
1650             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1651 #endif
1652         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1653
1654         return NULL;
1655 }
1656
1657
1658 int slapd_daemon( void )
1659 {
1660         int rc;
1661
1662         connections_init();
1663
1664 #define SLAPD_LISTENER_THREAD 1
1665 #if defined( SLAPD_LISTENER_THREAD )
1666         {
1667                 ldap_pvt_thread_t       listener_tid;
1668
1669                 /* listener as a separate THREAD */
1670                 rc = ldap_pvt_thread_create( &listener_tid,
1671                         0, slapd_daemon_task, NULL );
1672
1673                 if ( rc != 0 ) {
1674 #ifdef NEW_LOGGING
1675                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1676                                    "slapd_daemon: listener ldap_pvt_thread_create failed (%d).\n", rc ));
1677 #else
1678                         Debug( LDAP_DEBUG_ANY,
1679                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
1680 #endif
1681                         return rc;
1682                 }
1683
1684                 /* wait for the listener thread to complete */
1685                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
1686         }
1687 #else
1688         /* experimental code */
1689         slapd_daemon_task( NULL );
1690 #endif
1691
1692         return 0;
1693
1694 }
1695
1696 int sockinit(void)
1697 {
1698 #if defined( HAVE_WINSOCK2 )
1699     WORD wVersionRequested;
1700         WSADATA wsaData;
1701         int err;
1702
1703         wVersionRequested = MAKEWORD( 2, 0 );
1704
1705         err = WSAStartup( wVersionRequested, &wsaData );
1706         if ( err != 0 ) {
1707                 /* Tell the user that we couldn't find a usable */
1708                 /* WinSock DLL.                                  */
1709                 return -1;
1710         }
1711
1712         /* Confirm that the WinSock DLL supports 2.0.*/
1713         /* Note that if the DLL supports versions greater    */
1714         /* than 2.0 in addition to 2.0, it will still return */
1715         /* 2.0 in wVersion since that is the version we      */
1716         /* requested.                                        */
1717
1718         if ( LOBYTE( wsaData.wVersion ) != 2 ||
1719                 HIBYTE( wsaData.wVersion ) != 0 )
1720         {
1721             /* Tell the user that we couldn't find a usable */
1722             /* WinSock DLL.                                  */
1723             WSACleanup();
1724             return -1;
1725         }
1726
1727         /* The WinSock DLL is acceptable. Proceed. */
1728 #elif defined( HAVE_WINSOCK )
1729         WSADATA wsaData;
1730         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
1731             return -1;
1732         }
1733 #endif
1734         return 0;
1735 }
1736
1737 int sockdestroy(void)
1738 {
1739 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
1740         WSACleanup();
1741 #endif
1742         return 0;
1743 }
1744
1745 RETSIGTYPE
1746 slap_sig_shutdown( int sig )
1747 {
1748 #ifdef NEW_LOGGING
1749         LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1750                    "slap_sig_shutdown: signal %d\n", sig ));
1751 #else
1752         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
1753 #endif
1754
1755         /*
1756          * If the NT Service Manager is controlling the server, we don't
1757          * want SIGBREAK to kill the server. For some strange reason,
1758          * SIGBREAK is generated when a user logs out.
1759          */
1760
1761 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
1762         if (is_NT_Service && sig == SIGBREAK)
1763 #ifdef NEW_LOGGING
1764             LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1765                        "slap_sig_shutdown: SIGBREAK ignored.\n" ));
1766 #else
1767             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
1768                   0, 0, 0);
1769 #endif
1770         else
1771 #endif
1772         slapd_shutdown = sig;
1773
1774         WAKE_LISTENER(1);
1775
1776         /* reinstall self */
1777         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
1778 }
1779
1780 RETSIGTYPE
1781 slap_sig_wake( int sig )
1782 {
1783         WAKE_LISTENER(1);
1784
1785         /* reinstall self */
1786         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
1787 }
1788
1789
1790 void slapd_add_internal(ber_socket_t s) {
1791         slapd_add(s);
1792 }