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 #ifdef NEW_LOGGING
 403                                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 404                                         "slap_get_listener_addresses: "
 405                                         "getaddrinfo ai_addr is NULL?\n" ));
 406 #else
 407                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
 408                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 409 #endif
 410                                 freeaddrinfo(res);
 411                                 goto errexit;
 412                         }
 413
 414                         switch (sai->ai_family) {
 415 #  ifdef LDAP_PF_INET6
 416                         case AF_INET6:
 417                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 418                                 if (*sap == NULL) {
 419                                         freeaddrinfo(res);
 420                                         goto errexit;
 421                                 }
 422                                 *(struct sockaddr_in6 *)*sap =
 423                                         *((struct sockaddr_in6 *)sai->ai_addr);
 424                                 break;
 425 #  endif
 426                         case AF_INET:
 427                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 428                                 if (*sap == NULL) {
 429                                         freeaddrinfo(res);
 430                                         goto errexit;
 431                                 }
 432                                 *(struct sockaddr_in *)*sap =
 433                                         *((struct sockaddr_in *)sai->ai_addr);
 434                                 break;
 435                         default:
 436                                 *sap = NULL;
 437                                 break;
 438                         }
 439                         if (*sap != NULL) {
 440                                 (*sap)->sa_family = sai->ai_family;
 441                                 sap++;
 442                         }
 443                 }
 444
 445                 *sap = NULL;
 446                 freeaddrinfo(res);
 447 #else
 448                 struct in_addr in;
 449
 450                 if ( host == NULL ) {
 451                         in.s_addr = htonl(INADDR_ANY);
 452
 453                 } else if ( !inet_aton( host, &in ) ) {
 454                         struct hostent *he = gethostbyname( host );
 455                         if( he == NULL ) {
 456 #ifdef NEW_LOGGING
 457                                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 458                                            "slap_get_listener_addresses: invalid host %s\n",
 459                                            host ));
 460 #else
 461                                 Debug( LDAP_DEBUG_ANY,
 462                                        "daemon: invalid host %s", host, 0, 0);
 463 #endif
 464                                 return -1;
 465                         }
 466                         AC_MEMCPY( &in, he->h_addr, sizeof( in ) );
 467                 }
 468
 469                 *sal = ch_malloc(2 * sizeof(void *));
 470                 if (*sal == NULL) {
 471                         return -1;
 472                 }
 473
 474                 sap = *sal;
 475                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 476                 if (*sap == NULL) {
 477                         goto errexit;
 478                 }
 479                 sap[1] = NULL;
 480
 481                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_in) );
 482                 (*sap)->sa_family = AF_INET;
 483                 ((struct sockaddr_in *)*sap)->sin_port = htons(port);
 484                 ((struct sockaddr_in *)*sap)->sin_addr = in;
 485 #endif
 486         }
 487
 488         return 0;
 489
 490 errexit:
 491         slap_free_listener_addresses(*sal);
 492         return -1;
 493 }
 494
 495 static Listener * slap_open_listener(
 496         const char* url )
 497 {
 498         int     tmp, rc;
 499         Listener l;
 500         Listener *li;
 501         LDAPURLDesc *lud;
 502         unsigned short port;
 503         int err, addrlen;
 504         struct sockaddr **sal, **psal;
 505         int socktype = SOCK_STREAM;     /* default to COTS */
 506
 507         rc = ldap_url_parse( url, &lud );
 508
 509         if( rc != LDAP_URL_SUCCESS ) {
 510 #ifdef NEW_LOGGING
 511                 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 512                            "slap_open_listener: listen URL \"%s\" parse error %d\n",
 513                            url, rc ));
 514 #else
 515                 Debug( LDAP_DEBUG_ANY,
 516                         "daemon: listen URL \"%s\" parse error=%d\n",
 517                         url, rc, 0 );
 518 #endif
 519                 return NULL;
 520         }
 521
 522 #ifndef HAVE_TLS
 523         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 524 #ifdef NEW_LOGGING
 525                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 526                            "slap_open_listener: TLS is not supported (%s)\n",
 527                            url ));
 528 #else
 529                 Debug( LDAP_DEBUG_ANY,
 530                         "daemon: TLS not supported (%s)\n",
 531                         url, 0, 0 );
 532 #endif
 533                 ldap_free_urldesc( lud );
 534                 return NULL;
 535         }
 536
 537         if(! lud->lud_port ) {
 538                 lud->lud_port = LDAP_PORT;
 539         }
 540
 541 #else
 542         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 543
 544         if(! lud->lud_port ) {
 545                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 546         }
 547 #endif
 548
 549         port = (unsigned short) lud->lud_port;
 550
 551         tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
 552         if ( tmp == LDAP_PROTO_IPC ) {
 553 #ifdef LDAP_PF_LOCAL
 554                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 555                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 556                 } else {
 557                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 558                 }
 559 #else
 560
 561 #ifdef NEW_LOGGING
 562                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 563                            "slap_open_listener: URL scheme is not supported: %s\n",
 564                            url ));
 565 #else
 566                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 567                         url, 0, 0);
 568 #endif
 569                 ldap_free_urldesc( lud );
 570                 return NULL;
 571 #endif
 572         } else {
 573 #ifdef LDAP_CONNECTIONLESS
 574                 l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
 575 #endif
 576                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 577                         || strcmp(lud->lud_host, "*") == 0 )
 578                 {
 579                         err = slap_get_listener_addresses(NULL, port, &sal);
 580                 } else {
 581                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 582                 }
 583         }
 584
 585         ldap_free_urldesc( lud );
 586         if ( err ) {
 587                 return NULL;
 588         }
 589
 590         psal = sal;
 591         while ( *sal != NULL ) {
 592                 switch( (*sal)->sa_family ) {
 593                 case AF_INET:
 594 #ifdef LDAP_PF_INET6
 595                 case AF_INET6:
 596 #endif
 597 #ifdef LDAP_PF_LOCAL
 598                 case AF_LOCAL:
 599 #endif
 600                         break;
 601                 default:
 602                         sal++;
 603                         continue;
 604                 }
 605 #ifdef LDAP_CONNECTIONLESS
 606                 if (l.sl_is_udp)
 607                     socktype = SOCK_DGRAM;
 608 #endif
 609                 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
 610                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 611                         int err = sock_errno();
 612 #ifdef NEW_LOGGING
 613                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 614                                    "slap_open_listener: socket() failed errno=%d (%s)\n",
 615                                    err, sock_errstr(err) ));
 616 #else
 617                         Debug( LDAP_DEBUG_ANY,
 618                                 "daemon: socket() failed errno=%d (%s)\n", err,
 619                                 sock_errstr(err), 0 );
 620 #endif
 621                         sal++;
 622                         continue;
 623                 }
 624 #ifndef HAVE_WINSOCK
 625                 if ( l.sl_sd >= dtblsize ) {
 626 #ifdef NEW_LOGGING
 627                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 628                                    "slap_open_listener: listener descriptor %ld is too great %ld\n",
 629                                    (long)l.sl_sd, (long)dtblsize ));
 630 #else
 631                         Debug( LDAP_DEBUG_ANY,
 632                                "daemon: listener descriptor %ld is too great %ld\n",
 633                                (long) l.sl_sd, (long) dtblsize, 0 );
 634 #endif
 635                         tcp_close( l.sl_sd );
 636                         sal++;
 637                         continue;
 638                 }
 639 #endif
 640 #ifdef LDAP_PF_LOCAL
 641                 if ( (*sal)->sa_family == AF_LOCAL ) {
 642                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 643                 } else
 644 #endif
 645                 {
 646 #ifdef SO_REUSEADDR
 647                         /* enable address reuse */
 648                         tmp = 1;
 649                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 650                                          (char *) &tmp, sizeof(tmp) );
 651                         if ( rc == AC_SOCKET_ERROR ) {
 652                                 int err = sock_errno();
 653 #ifdef NEW_LOGGING
 654                                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 655                                            "slap_open_listener: setsockopt( %ld, SO_REUSEADDR ) failed errno %d (%s)\n",
 656                                            (long)l.sl_sd, err, sock_errstr(err) ));
 657 #else
 658                                 Debug( LDAP_DEBUG_ANY,
 659                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 660                                        (long) l.sl_sd, err, sock_errstr(err) );
 661 #endif
 662                         }
 663 #endif
 664                 }
 665
 666                 switch( (*sal)->sa_family ) {
 667                 case AF_INET:
 668                         addrlen = sizeof(struct sockaddr_in);
 669                         break;
 670 #ifdef LDAP_PF_INET6
 671                 case AF_INET6:
 672                         addrlen = sizeof(struct sockaddr_in6);
 673                         break;
 674 #endif
 675 #ifdef LDAP_PF_LOCAL
 676                 case AF_LOCAL:
 677                         addrlen = sizeof(struct sockaddr_un);
 678                         break;
 679 #endif
 680                 }
 681
 682                 if (!bind(l.sl_sd, *sal, addrlen))
 683                         break;
 684                 err = sock_errno();
 685 #ifdef NEW_LOGGING
 686                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 687                            "slap_open_listener: bind(%ld) failed errno=%d (%s)\n",
 688                            (long)l.sl_sd, err, sock_errstr(err) ));
 689 #else
 690                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 691                        (long) l.sl_sd, err, sock_errstr(err) );
 692 #endif
 693                 tcp_close( l.sl_sd );
 694                 sal++;
 695         } /* while ( *sal != NULL ) */
 696
 697         if ( *sal == NULL ) {
 698 #ifdef NEW_LOGGING
 699                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 700                            "slap_open_listener: bind(%ld) failed.\n", (long)l.sl_sd ));
 701 #else
 702                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed\n",
 703                         (long) l.sl_sd, 0, 0 );
 704 #endif
 705                 slap_free_listener_addresses(psal);
 706                 return NULL;
 707         }
 708
 709         switch ( (*sal)->sa_family ) {
 710 #ifdef LDAP_PF_LOCAL
 711         case AF_LOCAL: {
 712                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
 713                 if ( chmod( addr, S_IRWXU ) < 0 ) {
 714                         int err = sock_errno();
 715 #ifdef NEW_LOGGING
 716                         LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 717                                    "slap_open_listener: fchmod(%ld) failed errno=%d (%s)\n",
 718                                    (long)l.sl_sd, err, sock_errstr(err) ));
 719 #else
 720                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
 721                                (long) l.sl_sd, err, sock_errstr(err) );
 722 #endif
 723                         tcp_close( l.sl_sd );
 724                         slap_free_listener_addresses(psal);
 725                         return NULL;
 726                 }
 727                 l.sl_name = ch_malloc( strlen(addr) + sizeof("PATH=") );
 728                 sprintf( l.sl_name, "PATH=%s", addr );
 729         } break;
 730 #endif /* LDAP_PF_LOCAL */
 731
 732         case AF_INET: {
 733                 char *s;
 734 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
 735                 char addr[INET_ADDRSTRLEN];
 736                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
 737                            addr, sizeof(addr) );
 738                 s = addr;
 739                 port = ((struct sockaddr_in *)*sal) ->sin_port;
 740 #else
 741                 s = inet_ntoa( l.sl_addr.sin_addr );
 742                 port = l.sl_addr.sin_port;
 743 #endif
 744                 l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65535") );
 745                 sprintf( l.sl_name, "IP=%s:%d",
 746                          s != NULL ? s : "unknown" , port );
 747         } break;
 748
 749 #ifdef LDAP_PF_INET6
 750         case AF_INET6: {
 751                 char addr[INET6_ADDRSTRLEN];
 752                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
 753                            addr, sizeof addr);
 754                 port = ((struct sockaddr_in6 *)*sal)->sin6_port;
 755                 l.sl_name = ch_malloc( strlen(addr) + sizeof("IP= 65535") );
 756                 sprintf( l.sl_name, "IP=%s %d", addr, port );
 757         } break;
 758 #endif /* LDAP_PF_INET6 */
 759
 760         default:
 761 #ifdef NEW_LOGGING
 762                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 763                            "slap_open_listener: unsupported address family (%d)\n",
 764                            (int)(*sal)->sa_family ));
 765 #else
 766                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
 767                         (int) (*sal)->sa_family, 0, 0 );
 768 #endif
 769                 break;
 770         }
 771
 772         slap_free_listener_addresses(psal);
 773
 774         l.sl_url = ch_strdup( url );
 775         li = ch_malloc( sizeof( Listener ) );
 776         *li = l;
 777
 778 #ifdef NEW_LOGGING
 779         LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
 780                    "slap_open_listener: daemon initialzed %s\n", l.sl_url ));
 781 #else
 782         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
 783                 l.sl_url, 0, 0 );
 784 #endif
 785         return li;
 786 }
 787
 788 static int sockinit(void);
 789 static int sockdestroy(void);
 790
 791 int slapd_daemon_init( const char *urls )
 792 {
 793         int i, rc;
 794         char **u;
 795
 796 #ifdef NEW_LOGGING
 797         LDAP_LOG(( "connection", LDAP_LEVEL_ARGS,
 798                    "slapd_daemon_init: %s\n",
 799                    urls ? urls : "<null>" ));
 800 #else
 801         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
 802                 urls ? urls : "<null>", 0, 0 );
 803 #endif
 804         if( (rc = sockinit()) != 0 ) {
 805                 return rc;
 806         }
 807
 808 #ifdef HAVE_SYSCONF
 809         dtblsize = sysconf( _SC_OPEN_MAX );
 810 #elif HAVE_GETDTABLESIZE
 811         dtblsize = getdtablesize();
 812 #else
 813         dtblsize = FD_SETSIZE;
 814 #endif
 815
 816 #ifdef FD_SETSIZE
 817         if(dtblsize > FD_SETSIZE) {
 818                 dtblsize = FD_SETSIZE;
 819         }
 820 #endif  /* !FD_SETSIZE */
 821
 822         /* open a pipe (or something equivalent connected to itself).
 823          * we write a byte on this fd whenever we catch a signal. The main
 824          * loop will be select'ing on this socket, and will wake up when
 825          * this byte arrives.
 826          */
 827         if( (rc = lutil_pair( wake_sds )) < 0 ) {
 828 #ifdef NEW_LOGGING
 829                 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 830                            "slap_daemon_init: lutil_pair() failed rc=%d\n", rc ));
 831 #else
 832                 Debug( LDAP_DEBUG_ANY,
 833                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
 834 #endif
 835                 return rc;
 836         }
 837
 838         FD_ZERO( &slap_daemon.sd_readers );
 839         FD_ZERO( &slap_daemon.sd_writers );
 840
 841         if( urls == NULL ) {
 842                 urls = "ldap:///";
 843         }
 844
 845         u = str2charray( urls, " " );
 846
 847         if( u == NULL || u[0] == NULL ) {
 848 #ifdef NEW_LOGGING
 849                 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 850                            "slap_daemon_init: no urls (%s) provided.\n", urls ));
 851 #else
 852                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
 853                         urls, 0, 0 );
 854 #endif
 855                 return -1;
 856         }
 857
 858         for( i=0; u[i] != NULL; i++ ) {
 859 #ifdef NEW_LOGGING
 860                 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
 861                            "slap_daemon_init: listen on %s\n.", u[i] ));
 862 #else
 863                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
 864                         u[i], 0, 0 );
 865 #endif
 866         }
 867
 868         if( i == 0 ) {
 869 #ifdef NEW_LOGGING
 870                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 871                            "slap_daemon_init: no listeners to open (%s)\n", urls ));
 872 #else
 873                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
 874                         urls, 0, 0 );
 875 #endif
 876                 charray_free( u );
 877                 return -1;
 878         }
 879
 880 #ifdef NEW_LOGGING
 881         LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
 882                    "slap_daemon_init: %d listeners to open...\n", i ));
 883 #else
 884         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
 885                 i, 0, 0 );
 886 #endif
 887         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
 888
 889         for(i = 0; u[i] != NULL; i++ ) {
 890                 slap_listeners[i] = slap_open_listener( u[i] );
 891
 892                 if( slap_listeners[i] == NULL ) {
 893                         charray_free( u );
 894                         return -1;
 895                 }
 896         }
 897         slap_listeners[i] = NULL;
 898
 899 #ifdef NEW_LOGGING
 900         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
 901                    "slap_daemon_init: %d listeners opened\n", i ));
 902 #else
 903         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
 904                 i, 0, 0 );
 905 #endif
 906
 907 #ifdef HAVE_SLP
 908         slapd_slp_init( urls );
 909         slapd_slp_reg();
 910 #endif
 911
 912         charray_free( u );
 913         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
 914         return !i;
 915 }
 916
 917
 918 int
 919 slapd_daemon_destroy(void)
 920 {
 921         connections_destroy();
 922         tcp_close( wake_sds[1] );
 923         tcp_close( wake_sds[0] );
 924         sockdestroy();
 925
 926 #ifdef HAVE_SLP
 927         slapd_slp_dereg();
 928         slapd_slp_deinit();
 929 #endif
 930
 931         return 0;
 932 }
 933
 934
 935 static void *
 936 slapd_daemon_task(
 937         void *ptr
 938 )
 939 {
 940         int l;
 941         time_t  last_idle_check = slap_get_time();
 942         time( &starttime );
 943
 944         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
 945                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
 946                         continue;
 947 #ifdef LDAP_CONNECTIONLESS
 948                 /* Since this is connectionless, the data port is the
 949                  * listening port. The listen() and accept() calls
 950                  * are unnecessary.
 951                  */
 952                 if ( slap_listeners[l]->sl_is_udp )
 953                 {
 954                         slapd_add( slap_listeners[l]->sl_sd );
 955                         continue;
 956                 }
 957 #endif
 958
 959                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
 960                         int err = sock_errno();
 961 #ifdef NEW_LOGGING
 962                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
 963                                    "slapd_daemon_task: listen( %s, 5 ) failed errno=%d (%s)\n",
 964                                    slap_listeners[l]->sl_url, err, sock_errstr(err) ));
 965 #else
 966                         Debug( LDAP_DEBUG_ANY,
 967                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
 968                                         slap_listeners[l]->sl_url, err,
 969                                         sock_errstr(err) );
 970 #endif
 971                         return( (void*)-1 );
 972                 }
 973
 974                 slapd_add( slap_listeners[l]->sl_sd );
 975         }
 976
 977 #ifdef HAVE_NT_SERVICE_MANAGER
 978         if ( started_event != NULL ) {
 979                 ldap_pvt_thread_cond_signal( &started_event );
 980         }
 981 #endif
 982         /* initialization complete. Here comes the loop. */
 983
 984         while ( !slapd_shutdown ) {
 985                 ber_socket_t i;
 986                 int ns;
 987                 int at;
 988                 ber_socket_t nfds;
 989 #define SLAPD_EBADF_LIMIT 16
 990                 int ebadf = 0;
 991                 int emfile = 0;
 992
 993 #define SLAPD_IDLE_CHECK_LIMIT 4
 994                 time_t  now = slap_get_time();
 995
 996
 997                 fd_set                  readfds;
 998                 fd_set                  writefds;
 999                 Sockaddr                from;
1000
1001 #if defined(SLAPD_RLOOKUPS)
1002                 struct hostent          *hp;
1003 #endif
1004                 struct timeval          zero;
1005                 struct timeval          *tvp;
1006
1007                 if( emfile || ( global_idletimeout > 0 && difftime(
1008                         last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT,
1009                         now ) < 0 ))
1010                 {
1011                         connections_timeout_idle(now);
1012                 }
1013
1014                 FD_ZERO( &writefds );
1015                 FD_ZERO( &readfds );
1016
1017                 zero.tv_sec = 0;
1018                 zero.tv_usec = 0;
1019
1020                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1021
1022 #ifdef FD_SET_MANUAL_COPY
1023                 for( s = 0; s < nfds; s++ ) {
1024                         if(FD_ISSET( &slap_sd_readers, s )) {
1025                                 FD_SET( s, &readfds );
1026                         }
1027                         if(FD_ISSET( &slap_sd_writers, s )) {
1028                                 FD_SET( s, &writefds );
1029                         }
1030                 }
1031 #else
1032                 AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
1033                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
1034 #endif
1035                 assert(!FD_ISSET(wake_sds[0], &readfds));
1036                 FD_SET( wake_sds[0], &readfds );
1037
1038                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1039                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1040                                 continue;
1041                         if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
1042                             FD_SET( slap_listeners[l]->sl_sd, &readfds );
1043                 }
1044
1045 #ifndef HAVE_WINSOCK
1046                 nfds = slap_daemon.sd_nfds;
1047 #else
1048                 nfds = dtblsize;
1049 #endif
1050
1051                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1052
1053                 at = ldap_pvt_thread_pool_backload(&connection_pool);
1054
1055 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
1056                 tvp = NULL;
1057 #else
1058                 tvp = at ? &zero : NULL;
1059 #endif
1060
1061                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1062                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1063                                 continue;
1064
1065 #ifdef NEW_LOGGING
1066                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1067                                    "slapd_daemon_task: select: listen=%d active_threads=%d tvp=%s\n",
1068                                    slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "zero" ));
1069 #else
1070                         Debug( LDAP_DEBUG_CONNS,
1071                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1072                                         slap_listeners[l]->sl_sd, at,
1073                                         tvp == NULL ? "NULL" : "zero" );
1074 #endif
1075                 }
1076
1077                 switch(ns = select( nfds, &readfds,
1078 #ifdef HAVE_WINSOCK
1079                         /* don't pass empty fd_set */
1080                         ( writefds.fd_count > 0 ? &writefds : NULL ),
1081 #else
1082                         &writefds,
1083 #endif
1084                         NULL, tvp ))
1085                 {
1086                 case -1: {      /* failure - try again */
1087                                 int err = sock_errno();
1088
1089                                 if( err == EBADF
1090 #ifdef WSAENOTSOCK
1091                                         /* you'd think this would be EBADF */
1092                                         || err == WSAENOTSOCK
1093 #endif
1094                                 ) {
1095                                         if (++ebadf < SLAPD_EBADF_LIMIT)
1096                                                 continue;
1097                                 }
1098
1099                                 if( err != EINTR ) {
1100 #ifdef NEW_LOGGING
1101                                         LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1102                                                    "slapd_daemon_task: select failed (%d): %s\n",
1103                                                    err, sock_errstr(err) ));
1104 #else
1105                                         Debug( LDAP_DEBUG_CONNS,
1106                                                 "daemon: select failed (%d): %s\n",
1107                                                 err, sock_errstr(err), 0 );
1108 #endif
1109                                         slapd_shutdown = -1;
1110                                 }
1111                         }
1112                         continue;
1113
1114                 case 0:         /* timeout - let threads run */
1115                         ebadf = 0;
1116 #ifdef NEW_LOGGING
1117                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1118                                    "slapd_daemon_task: select timeout - yielding\n" ));
1119 #else
1120                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1121                             0, 0, 0 );
1122 #endif
1123                         ldap_pvt_thread_yield();
1124                         continue;
1125
1126                 default:        /* something happened - deal with it */
1127                         if( slapd_shutdown ) continue;
1128
1129                         ebadf = 0;
1130 #ifdef NEW_LOGGING
1131                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1132                                    "slapd_daemon_task: activity on %d descriptors\n", ns ));
1133 #else
1134                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
1135                                 ns, 0, 0 );
1136 #endif
1137                         /* FALL THRU */
1138                 }
1139
1140                 if( FD_ISSET( wake_sds[0], &readfds ) ) {
1141                         char c[BUFSIZ];
1142                         tcp_read( wake_sds[0], c, sizeof(c) );
1143 #ifdef NO_THREADS
1144                         waking = 0;
1145 #endif
1146                         continue;
1147                 }
1148
1149                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1150                         ber_socket_t s;
1151                         socklen_t len = sizeof(from);
1152                         long id;
1153                         slap_ssf_t ssf = 0;
1154                         char *authid = NULL;
1155
1156                         char    *dnsname;
1157                         char    *peeraddr;
1158 #ifdef LDAP_PF_LOCAL
1159                         char    peername[MAXPATHLEN + sizeof("PATH=")];
1160 #elif defined(LDAP_PF_INET6)
1161                         char    peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1162 #else
1163                         char    peername[sizeof("IP=255.255.255.255:65336")];
1164 #endif /* LDAP_PF_LOCAL */
1165
1166                         peername[0] = '\0';
1167
1168                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1169                                 continue;
1170
1171                         if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
1172                                 continue;
1173
1174 #ifdef LDAP_CONNECTIONLESS
1175                         if ( slap_listeners[l]->sl_is_udp )
1176                         {
1177                         /* The first time we receive a query, we set this
1178                          * up as a "connection". It remains open for the life
1179                          * of the slapd.
1180                          */
1181                                 if ( slap_listeners[l]->sl_is_udp < 2 )
1182                                 {
1183                                     id = connection_init(
1184                                         slap_listeners[l]->sl_sd,
1185                                         slap_listeners[l]->sl_url, "", "",
1186                                         slap_listeners[l]->sl_name,
1187                                         2, ssf, authid );
1188                                     slap_listeners[l]->sl_is_udp++;
1189                                 }
1190                                 continue;
1191                         }
1192 #endif
1193
1194                         s = accept( slap_listeners[l]->sl_sd,
1195                                 (struct sockaddr *) &from, &len );
1196                         if ( s == AC_SOCKET_INVALID ) {
1197                                 int err = sock_errno();
1198
1199 #ifdef EMFILE
1200                                 if( err == EMFILE ) {
1201                                         emfile++;
1202                                 } else
1203 #endif
1204 #ifdef ENFILE
1205                                 if( err == ENFILE ) {
1206                                         emfile++;
1207                                 } else
1208 #endif
1209                                 {
1210                                         emfile=0;
1211                                 }
1212
1213                                 if( emfile < 3 ) {
1214 #ifdef NEW_LOGGING
1215                                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1216                                                 "slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
1217                                                 (long)slap_listeners[l]->sl_sd, err, sock_errstr(err) ));
1218 #else
1219                                         Debug( LDAP_DEBUG_ANY,
1220                                             "daemon: accept(%ld) failed errno=%d (%s)\n",
1221                                             (long) slap_listeners[l]->sl_sd, err,
1222                                             sock_errstr(err) );
1223 #endif
1224                                 } else {
1225                                         /* prevent busy loop */
1226 #  ifdef HAVE_USLEEP
1227                                         if( emfile % 4 == 3 ) usleep( 250 );
1228 #  else
1229                                         if( emfile % 8 == 7 ) sleep( 1 );
1230 #  endif
1231                                 }
1232
1233                                 ldap_pvt_thread_yield();
1234                                 continue;
1235                         }
1236                         emfile = 0;
1237
1238 #ifndef HAVE_WINSOCK
1239                         /* make sure descriptor number isn't too great */
1240                         if ( s >= dtblsize ) {
1241 #ifdef NEW_LOGGING
1242                                 LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1243                                    "slapd_daemon_task: %ld beyond descriptor table size %ld\n",
1244                                    (long)s, (long)dtblsize ));
1245 #else
1246                                 Debug( LDAP_DEBUG_ANY,
1247                                         "daemon: %ld beyond descriptor table size %ld\n",
1248                                         (long) s, (long) dtblsize, 0 );
1249 #endif
1250
1251                                 slapd_close(s);
1252                                 ldap_pvt_thread_yield();
1253                                 continue;
1254                         }
1255 #endif
1256
1257 #ifdef LDAP_DEBUG
1258                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1259
1260                         /* newly accepted stream should not be in any of the FD SETS */
1261                         assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
1262                         assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
1263                         assert( !FD_ISSET( s, &slap_daemon.sd_writers) );
1264
1265                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1266 #endif
1267
1268 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1269 #ifdef LDAP_PF_LOCAL
1270                         /* for IPv4 and IPv6 sockets only */
1271                         if ( from.sa_addr.sa_family != AF_LOCAL )
1272 #endif /* LDAP_PF_LOCAL */
1273                         {
1274                                 int rc;
1275                                 int tmp;
1276 #ifdef SO_KEEPALIVE
1277                                 /* enable keep alives */
1278                                 tmp = 1;
1279                                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1280                                         (char *) &tmp, sizeof(tmp) );
1281                                 if ( rc == AC_SOCKET_ERROR ) {
1282                                         int err = sock_errno();
1283 #ifdef NEW_LOGGING
1284                                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1285                                                    "slapd_daemon_task: setsockopt( %ld, SO_KEEPALIVE) failed errno=%d (%s)\n",
1286                                                    (long)s, err, sock_errstr(err) ));
1287 #else
1288                                         Debug( LDAP_DEBUG_ANY,
1289                                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1290                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1291 #endif
1292                                 }
1293 #endif
1294 #ifdef TCP_NODELAY
1295                                 /* enable no delay */
1296                                 tmp = 1;
1297                                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1298                                         (char *)&tmp, sizeof(tmp) );
1299                                 if ( rc == AC_SOCKET_ERROR ) {
1300                                         int err = sock_errno();
1301 #ifdef NEW_LOGGING
1302                                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1303                                                    "slapd_daemon_task: setsockopt( %ld, TCP_NODELAY) failed errno=%d (%s)\n",
1304                                                    (long)s, err, sock_errstr(err) ));
1305 #else
1306                                         Debug( LDAP_DEBUG_ANY,
1307                                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1308                                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1309 #endif
1310                                 }
1311 #endif
1312                         }
1313 #endif
1314
1315 #ifdef NEW_LOGGING
1316                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
1317                                    "slapd_daemon_task: new connection on %ld\n", (long)s ));
1318 #else
1319                         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
1320                                 (long) s, 0, 0 );
1321 #endif
1322                         switch ( from.sa_addr.sa_family ) {
1323 #  ifdef LDAP_PF_LOCAL
1324                         case AF_LOCAL:
1325                                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1326                                 ssf = LDAP_PVT_SASL_LOCAL_SSF;
1327                                 break;
1328 #endif /* LDAP_PF_LOCAL */
1329
1330 #  ifdef LDAP_PF_INET6
1331                         case AF_INET6:
1332                         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1333                                 peeraddr = inet_ntoa( *((struct in_addr *)
1334                                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1335                                 sprintf( peername, "IP=%s:%d",
1336                                          peeraddr != NULL ? peeraddr : "unknown",
1337                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1338                         } else {
1339                                 char addr[INET6_ADDRSTRLEN];
1340                                 sprintf( peername, "IP=%s %d",
1341                                          inet_ntop( AF_INET6,
1342                                                     &from.sa_in6_addr.sin6_addr,
1343                                                     addr, sizeof addr) ? addr : "unknown",
1344                                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1345                         }
1346                         break;
1347 #  endif /* LDAP_PF_INET6 */
1348
1349                         case AF_INET:
1350                         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1351                         sprintf( peername, "IP=%s:%d",
1352                                 peeraddr != NULL ? peeraddr : "unknown",
1353                                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1354                                 break;
1355
1356                         default:
1357                                 slapd_close(s);
1358                                 continue;
1359                         }
1360
1361                         if ( ( from.sa_addr.sa_family == AF_INET )
1362 #ifdef LDAP_PF_INET6
1363                                 || ( from.sa_addr.sa_family == AF_INET6 )
1364 #endif
1365                         ) {
1366 #ifdef SLAPD_RLOOKUPS
1367 #  ifdef LDAP_PF_INET6
1368                                 if ( from.sa_addr.sa_family == AF_INET6 )
1369                                         hp = gethostbyaddr(
1370                                                 (char *)&(from.sa_in6_addr.sin6_addr),
1371                                                 sizeof(from.sa_in6_addr.sin6_addr),
1372                                                 AF_INET6 );
1373                                 else
1374 #  endif /* LDAP_PF_INET6 */
1375                                 hp = gethostbyaddr(
1376                                         (char *) &(from.sa_in_addr.sin_addr),
1377                                         sizeof(from.sa_in_addr.sin_addr),
1378                                         AF_INET );
1379                                 dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
1380 #else
1381                                 dnsname = NULL;
1382 #endif /* SLAPD_RLOOKUPS */
1383
1384 #ifdef HAVE_TCPD
1385                                 if ( !hosts_ctl("slapd",
1386                                                 dnsname != NULL ? dnsname : STRING_UNKNOWN,
1387                                                 peeraddr != NULL ? peeraddr : STRING_UNKNOWN,
1388                                                 STRING_UNKNOWN ))
1389                                 {
1390                                         /* DENY ACCESS */
1391                                         Statslog( LDAP_DEBUG_ANY,
1392                                                 "fd=%ld host access from %s (%s) denied.\n",
1393                                                 (long) s,
1394                                                 dnsname != NULL ? dnsname : "unknown",
1395                                                 peeraddr != NULL ? peeraddr : "unknown",
1396                                                 0, 0 );
1397                                         slapd_close(s);
1398                                         continue;
1399                                 }
1400 #endif /* HAVE_TCPD */
1401                         }
1402
1403                         id = connection_init(s,
1404                                 slap_listeners[l]->sl_url,
1405                                 dnsname != NULL ? dnsname : "unknown",
1406                                 peername,
1407                                 slap_listeners[l]->sl_name,
1408 #ifdef HAVE_TLS
1409                                 slap_listeners[l]->sl_is_tls,
1410 #else
1411                                 0,
1412 #endif
1413                                 ssf,
1414                                 authid );
1415
1416                         if( authid ) ch_free(authid);
1417
1418                         if( id < 0 ) {
1419 #ifdef NEW_LOGGING
1420                                 LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
1421                                            "slapd_daemon_task: connection_init(%ld, %s, %s) failed.\n",
1422                                            (long)s, peername, slap_listeners[l]->sl_name ));
1423 #else
1424                                 Debug( LDAP_DEBUG_ANY,
1425                                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1426                                         (long) s,
1427                                         peername,
1428                                         slap_listeners[l]->sl_name );
1429 #endif
1430                                 slapd_close(s);
1431                                 continue;
1432                         }
1433
1434                         Statslog( LDAP_DEBUG_STATS,
1435                                 "daemon: conn=%ld fd=%ld connection from %s (%s) accepted.\n",
1436                                 id, (long) s,
1437                                 peername,
1438                                 slap_listeners[l]->sl_name,
1439                                 0 );
1440
1441                         slapd_add( s );
1442                         continue;
1443                 }
1444
1445 #ifdef LDAP_DEBUG
1446 #ifdef NEW_LOGGING
1447                 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1448                            "slapd_daemon_task: activity on " ));
1449 #else
1450                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1451 #endif
1452 #ifdef HAVE_WINSOCK
1453                 for ( i = 0; i < readfds.fd_count; i++ ) {
1454 #ifdef NEW_LOGGING
1455                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1456                                    " %d%s", readfds.fd_array[i], "r", 0 ));
1457 #else
1458                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1459                                 readfds.fd_array[i], "r", 0 );
1460 #endif
1461                 }
1462                 for ( i = 0; i < writefds.fd_count; i++ ) {
1463 #ifdef NEW_LOGGING
1464                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1465                                    " %d%s", writefds.fd_array[i], "w" ));
1466 #else
1467                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1468                                 writefds.fd_array[i], "w", 0 );
1469 #endif
1470                 }
1471
1472 #else
1473                 for ( i = 0; i < nfds; i++ ) {
1474                         int     r, w;
1475                         int     is_listener = 0;
1476
1477                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1478                                 if ( i == slap_listeners[l]->sl_sd ) {
1479 #ifdef LDAP_CONNECTIONLESS
1480                                 /* The listener is the data port. Don't
1481                                  * skip it.
1482                                  */
1483                                         if (slap_listeners[l]->sl_is_udp)
1484                                                 continue;
1485 #endif
1486                                         is_listener = 1;
1487                                         break;
1488                                 }
1489                         }
1490                         if ( is_listener ) {
1491                                 continue;
1492                         }
1493                         r = FD_ISSET( i, &readfds );
1494                         w = FD_ISSET( i, &writefds );
1495                         if ( r || w ) {
1496 #ifdef NEW_LOGGING
1497                                 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1498                                            " %d%s%s", i,
1499                                            r ? "r" : "", w ? "w" : "" ));
1500 #else
1501                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1502                                     r ? "r" : "", w ? "w" : "" );
1503 #endif
1504                         }
1505                 }
1506 #endif
1507 #ifdef NEW_LOGGING
1508                 LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2, "\n" ));
1509 #else
1510                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1511 #endif
1512
1513 #endif
1514
1515                 /* loop through the writers */
1516 #ifdef HAVE_WINSOCK
1517                 for ( i = 0; i < writefds.fd_count; i++ )
1518 #else
1519                 for ( i = 0; i < nfds; i++ )
1520 #endif
1521                 {
1522                         ber_socket_t wd;
1523                         int is_listener = 0;
1524 #ifdef HAVE_WINSOCK
1525                         wd = writefds.fd_array[i];
1526 #else
1527                         if( ! FD_ISSET( i, &writefds ) ) {
1528                                 continue;
1529                         }
1530                         wd = i;
1531 #endif
1532
1533                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1534                                 if ( i == slap_listeners[l]->sl_sd ) {
1535 #ifdef LDAP_CONNECTIONLESS
1536                                         if (slap_listeners[l]->sl_is_udp)
1537                                                 continue;
1538 #endif
1539                                         is_listener = 1;
1540                                         break;
1541                                 }
1542                         }
1543                         if ( is_listener ) {
1544                                 continue;
1545                         }
1546 #ifdef NEW_LOGGING
1547                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1548                                    "slapd_daemon_task: write active on %d\n", wd ));
1549 #else
1550                         Debug( LDAP_DEBUG_CONNS,
1551                                 "daemon: write active on %d\n",
1552                                 wd, 0, 0 );
1553 #endif
1554                         /*
1555                          * NOTE: it is possible that the connection was closed
1556                          * and that the stream is now inactive.
1557                          * connection_write() must valid the stream is still
1558                          * active.
1559                          */
1560
1561                         if ( connection_write( wd ) < 0 ) {
1562                                 FD_CLR( (unsigned) wd, &readfds );
1563                                 slapd_close( wd );
1564                         }
1565                 }
1566
1567 #ifdef HAVE_WINSOCK
1568                 for ( i = 0; i < readfds.fd_count; i++ )
1569 #else
1570                 for ( i = 0; i < nfds; i++ )
1571 #endif
1572                 {
1573                         ber_socket_t rd;
1574                         int is_listener = 0;
1575
1576 #ifdef HAVE_WINSOCK
1577                         rd = readfds.fd_array[i];
1578 #else
1579                         if( ! FD_ISSET( i, &readfds ) ) {
1580                                 continue;
1581                         }
1582                         rd = i;
1583 #endif
1584
1585                         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1586                                 if ( rd == slap_listeners[l]->sl_sd ) {
1587 #ifdef LDAP_CONNECTIONLESS
1588                                         if (slap_listeners[l]->sl_is_udp)
1589                                                 continue;
1590 #endif
1591                                         is_listener = 1;
1592                                         break;
1593                                 }
1594                         }
1595                         if ( is_listener ) {
1596                                 continue;
1597                         }
1598
1599 #ifdef NEW_LOGGING
1600                         LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
1601                                    "slapd_daemon_task: read activity on %d\n", rd ));
1602 #else
1603                         Debug ( LDAP_DEBUG_CONNS,
1604                                 "daemon: read activity on %d\n", rd, 0, 0 );
1605 #endif
1606                         /*
1607                          * NOTE: it is possible that the connection was closed
1608                          * and that the stream is now inactive.
1609                          * connection_read() must valid the stream is still
1610                          * active.
1611                          */
1612
1613                         if ( connection_read( rd ) < 0 ) {
1614                                 slapd_close( rd );
1615                         }
1616                 }
1617                 ldap_pvt_thread_yield();
1618         }
1619
1620         if( slapd_shutdown > 0 ) {
1621 #ifdef NEW_LOGGING
1622                 LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1623                            "slapd_daemon_task: shutdown requested and initiated.\n"));
1624 #else
1625                 Debug( LDAP_DEBUG_TRACE,
1626                         "daemon: shutdown requested and initiated.\n",
1627                         0, 0, 0 );
1628 #endif
1629
1630         } else if ( slapd_shutdown < 0 ) {
1631 #ifdef HAVE_NT_SERVICE_MANAGER
1632                 if (slapd_shutdown == -1)
1633                 {
1634 #ifdef NEW_LOGGING
1635                         LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1636                                    "slapd_daemon_task: shutdown initiated by Service Manager.\n"));
1637 #else
1638                         Debug( LDAP_DEBUG_TRACE,
1639                                "daemon: shutdown initiated by Service Manager.\n",
1640                                0, 0, 0);
1641 #endif
1642                 }
1643                 else
1644 #endif
1645                 {
1646 #ifdef NEW_LOGGING
1647                         LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1648                                    "slapd_daemon_task: abnormal condition, shutdown initiated.\n" ));
1649 #else
1650                         Debug( LDAP_DEBUG_TRACE,
1651                                "daemon: abnormal condition, shutdown initiated.\n",
1652                                0, 0, 0 );
1653 #endif
1654                 }
1655         } else {
1656 #ifdef NEW_LOGGING
1657                 LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1658                            "slapd_daemon_task: no active streams, shutdown initiated.\n" ));
1659 #else
1660                 Debug( LDAP_DEBUG_TRACE,
1661                        "daemon: no active streams, shutdown initiated.\n",
1662                        0, 0, 0 );
1663 #endif
1664         }
1665
1666         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1667                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1668 #ifdef LDAP_PF_LOCAL
1669                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1670                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1671                         }
1672 #endif /* LDAP_PF_LOCAL */
1673                         slapd_close( slap_listeners[l]->sl_sd );
1674                         break;
1675                 }
1676         }
1677
1678 #ifdef NEW_LOGGING
1679         LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1680                    "slapd_daemon_task: shutdown waiting for %d threads to terminate.\n",
1681                    ldap_pvt_thread_pool_backload(&connection_pool) ));
1682 #else
1683         Debug( LDAP_DEBUG_ANY,
1684             "slapd shutdown: waiting for %d threads to terminate\n",
1685             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
1686 #endif
1687         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
1688
1689         return NULL;
1690 }
1691
1692
1693 int slapd_daemon( void )
1694 {
1695         int rc;
1696
1697         connections_init();
1698
1699 #define SLAPD_LISTENER_THREAD 1
1700 #if defined( SLAPD_LISTENER_THREAD )
1701         {
1702                 ldap_pvt_thread_t       listener_tid;
1703
1704                 /* listener as a separate THREAD */
1705                 rc = ldap_pvt_thread_create( &listener_tid,
1706                         0, slapd_daemon_task, NULL );
1707
1708                 if ( rc != 0 ) {
1709 #ifdef NEW_LOGGING
1710                         LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
1711                                    "slapd_daemon: listener ldap_pvt_thread_create failed (%d).\n", rc ));
1712 #else
1713                         Debug( LDAP_DEBUG_ANY,
1714                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
1715 #endif
1716                         return rc;
1717                 }
1718
1719                 /* wait for the listener thread to complete */
1720                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
1721         }
1722 #else
1723         /* experimental code */
1724         slapd_daemon_task( NULL );
1725 #endif
1726
1727         return 0;
1728
1729 }
1730
1731 int sockinit(void)
1732 {
1733 #if defined( HAVE_WINSOCK2 )
1734     WORD wVersionRequested;
1735         WSADATA wsaData;
1736         int err;
1737
1738         wVersionRequested = MAKEWORD( 2, 0 );
1739
1740         err = WSAStartup( wVersionRequested, &wsaData );
1741         if ( err != 0 ) {
1742                 /* Tell the user that we couldn't find a usable */
1743                 /* WinSock DLL.                                  */
1744                 return -1;
1745         }
1746
1747         /* Confirm that the WinSock DLL supports 2.0.*/
1748         /* Note that if the DLL supports versions greater    */
1749         /* than 2.0 in addition to 2.0, it will still return */
1750         /* 2.0 in wVersion since that is the version we      */
1751         /* requested.                                        */
1752
1753         if ( LOBYTE( wsaData.wVersion ) != 2 ||
1754                 HIBYTE( wsaData.wVersion ) != 0 )
1755         {
1756             /* Tell the user that we couldn't find a usable */
1757             /* WinSock DLL.                                  */
1758             WSACleanup();
1759             return -1;
1760         }
1761
1762         /* The WinSock DLL is acceptable. Proceed. */
1763 #elif defined( HAVE_WINSOCK )
1764         WSADATA wsaData;
1765         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
1766             return -1;
1767         }
1768 #endif
1769         return 0;
1770 }
1771
1772 int sockdestroy(void)
1773 {
1774 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
1775         WSACleanup();
1776 #endif
1777         return 0;
1778 }
1779
1780 RETSIGTYPE
1781 slap_sig_shutdown( int sig )
1782 {
1783 #ifdef NEW_LOGGING
1784         LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1785                    "slap_sig_shutdown: signal %d\n", sig ));
1786 #else
1787         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
1788 #endif
1789
1790         /*
1791          * If the NT Service Manager is controlling the server, we don't
1792          * want SIGBREAK to kill the server. For some strange reason,
1793          * SIGBREAK is generated when a user logs out.
1794          */
1795
1796 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
1797         if (is_NT_Service && sig == SIGBREAK)
1798 #ifdef NEW_LOGGING
1799             LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
1800                        "slap_sig_shutdown: SIGBREAK ignored.\n" ));
1801 #else
1802             Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
1803                   0, 0, 0);
1804 #endif
1805         else
1806 #endif
1807         slapd_shutdown = sig;
1808
1809         WAKE_LISTENER(1);
1810
1811         /* reinstall self */
1812         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
1813 }
1814
1815 RETSIGTYPE
1816 slap_sig_wake( int sig )
1817 {
1818         WAKE_LISTENER(1);
1819
1820         /* reinstall self */
1821         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
1822 }
1823
1824
1825 void slapd_add_internal(ber_socket_t s) {
1826         slapd_add(s);
1827 }