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

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2005 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  16  * All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms are permitted
  19  * provided that this notice is preserved and that due credit is given
  20  * to the University of Michigan at Ann Arbor. The name of the University
  21  * may not be used to endorse or promote products derived from this
  22  * software without specific prior written permission. This software
  23  * is provided ``as is'' without express or implied warranty.
  24  */
  25
  26 #include "portable.h"
  27
  28 #include <stdio.h>
  29
  30 #include <ac/ctype.h>
  31 #include <ac/errno.h>
  32 #include <ac/socket.h>
  33 #include <ac/string.h>
  34 #include <ac/time.h>
  35 #include <ac/unistd.h>
  36
  37 #include "slap.h"
  38 #include "ldap_pvt_thread.h"
  39 #include "lutil.h"
  40
  41 #include "ldap_rq.h"
  42
  43 #undef HAVE_EPOLL
  44
  45 #if defined(HAVE_SYS_EPOLL_H) && defined(HAVE_EPOLL)
  46 #include <sys/epoll.h>
  47 #endif
  48
  49 #ifdef HAVE_TCPD
  50 #include <tcpd.h>
  51 #define SLAP_STRING_UNKNOWN     STRING_UNKNOWN
  52
  53 int allow_severity = LOG_INFO;
  54 int deny_severity = LOG_NOTICE;
  55 #else /* ! TCP Wrappers */
  56 #define SLAP_STRING_UNKNOWN     "unknown"
  57 #endif /* ! TCP Wrappers */
  58
  59 #ifdef LDAP_PF_LOCAL
  60 #include <sys/stat.h>
  61 /* this should go in <ldap.h> as soon as it is accepted */
  62 #define LDAPI_MOD_URLEXT                "x-mod"
  63 #endif /* LDAP_PF_LOCAL */
  64
  65 #ifdef LDAP_PF_INET6
  66 int slap_inet4or6 = AF_UNSPEC;
  67 #else
  68 int slap_inet4or6 = AF_INET;
  69 #endif
  70
  71 /* globals */
  72 time_t starttime;
  73 ber_socket_t dtblsize;
  74 slap_ssf_t local_ssf = LDAP_PVT_SASL_LOCAL_SSF;
  75 struct runqueue_s slapd_rq;
  76
  77 Listener **slap_listeners = NULL;
  78
  79 #ifndef SLAPD_LISTEN_BACKLOG
  80 #define SLAPD_LISTEN_BACKLOG 1024
  81 #endif
  82
  83 static ber_socket_t wake_sds[2];
  84 static int emfile;
  85
  86 static int waking;
  87 #define WAKE_LISTENER(w) do { \
  88         if ((w) && waking < 5) { waking++; tcp_write( wake_sds[1], "0", 1 ); } \
  89         } while(0)
  90
  91 volatile sig_atomic_t slapd_shutdown = 0, slapd_gentle_shutdown = 0;
  92 volatile sig_atomic_t slapd_abrupt_shutdown = 0;
  93
  94 static struct slap_daemon {
  95         ldap_pvt_thread_mutex_t sd_mutex;
  96
  97         ber_socket_t sd_nactives;
  98         int sd_nwriters;
  99
 100 #ifdef HAVE_EPOLL
 101         struct epoll_event *sd_epolls;
 102         int     sd_nepolls;
 103         int     *sd_index;
 104         int     sd_epfd;
 105         int     sd_nfds;
 106 #else
 107
 108 #ifndef HAVE_WINSOCK
 109         /* In winsock, accept() returns values higher than dtblsize
 110                 so don't bother with this optimization */
 111         int sd_nfds;
 112 #endif
 113
 114         fd_set sd_actives;
 115         fd_set sd_readers;
 116         fd_set sd_writers;
 117 #endif
 118 } slap_daemon;
 119
 120 #ifdef HAVE_EPOLL
 121 #define SLAP_EVENTS_ARE_INDEXED 0
 122 #define SLAP_SOCK_IX(s) (slap_daemon.sd_index[s])
 123 #define SLAP_SOCK_EP(s) (slap_daemon.sd_epolls[SLAP_SOCK_IX(s)])
 124 #define SLAP_SOCK_EV(s) (SLAP_SOCK_EP(s).events)
 125 #define SLAP_SOCK_IS_ACTIVE(s)  (SLAP_SOCK_IX(s) != -1)
 126 #define SLAP_SOCK_NOT_ACTIVE(s) (SLAP_SOCK_IX(s) == -1)
 127 #define SLAP_SOCK_IS_SET(s, mode)       (SLAP_SOCK_EV(s) & mode)
 128
 129 #define SLAP_SOCK_IS_READ(s)    SLAP_SOCK_IS_SET(s, EPOLLIN)
 130 #define SLAP_SOCK_IS_WRITE(s)   SLAP_SOCK_IS_SET(s, EPOLLOUT)
 131
 132 #define SLAP_SET_SOCK(s, mode) do { \
 133         if ((SLAP_SOCK_EV(s) & mode) != mode) { \
 134                 SLAP_SOCK_EV(s) |= mode;        \
 135                 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, s,        \
 136                         &SLAP_SOCK_EP(s));      \
 137         }       \
 138 } while(0)
 139
 140 #define SLAP_CLR_SOCK(s, mode) do { \
 141         if ((SLAP_SOCK_EV(s) & mode)) { \
 142                 SLAP_SOCK_EV(s) &= ~mode;       \
 143                 epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_MOD, s,        \
 144                         &SLAP_SOCK_EP(s));      \
 145         }       \
 146 } while(0)
 147
 148 #define SLAP_SOCK_SET_READ(s)   SLAP_SET_SOCK(s, EPOLLIN)
 149 #define SLAP_SOCK_SET_WRITE(s)  SLAP_SET_SOCK(s, EPOLLOUT)
 150
 151 #define SLAP_SOCK_CLR_READ(s)   SLAP_CLR_SOCK(s, EPOLLIN)
 152 #define SLAP_SOCK_CLR_WRITE(s)  SLAP_CLR_SOCK(s, EPOLLOUT)
 153
 154 #define SLAP_CLR_EVENT(i, mode) (revents[i].events &= ~mode)
 155
 156
 157 #define SLAP_EVENT_MAX  slap_daemon.sd_nfds
 158
 159 /* If a Listener address is provided, store that as the epoll data.
 160  * Otherwise, store the address of this socket's slot in the
 161  * index array. If we can't do this add, the system is out of
 162  * resources and we need to shutdown.
 163  */
 164 #define SLAP_ADD_SOCK(s, l) do { \
 165         int rc; \
 166         SLAP_SOCK_IX(s) = slap_daemon.sd_nfds;  \
 167         SLAP_SOCK_EP(s).data.ptr = (l) ? (l) : (void *)(&SLAP_SOCK_IX(s)); \
 168         SLAP_SOCK_EV(s) = EPOLLIN;      \
 169         rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_ADD, s,   \
 170                         &SLAP_SOCK_EP(s));      \
 171         if ( rc == 0 ) slap_daemon.sd_nfds++;   \
 172         else {  \
 173                 Debug( LDAP_DEBUG_ANY, "daemon: epoll_ctl ADD failed, errno %d, shutting down\n",       \
 174                 errno, 0, 0 );  \
 175                 slapd_shutdown = 2;     \
 176         }       \
 177 } while(0)
 178
 179 #define SLAP_EV_LISTENER(ptr) (((int *)(ptr) >= slap_daemon.sd_index && \
 180          (int *)(ptr) <= (slap_daemon.sd_index+dtblsize)) ? 0 : 1)
 181
 182 #define SLAP_EV_PTRFD(ptr) (SLAP_EV_LISTENER(ptr) ? \
 183          ((Listener *)ptr)->sl_sd : (int *)(ptr) - slap_daemon.sd_index)
 184
 185 #define SLAP_DEL_SOCK(s) do { \
 186         int fd, rc, index = SLAP_SOCK_IX(s); \
 187         rc = epoll_ctl(slap_daemon.sd_epfd, EPOLL_CTL_DEL, s,   \
 188                         &SLAP_SOCK_EP(s));      \
 189         slap_daemon.sd_epolls[index] = slap_daemon.sd_epolls[slap_daemon.sd_nfds-1];    \
 190         fd = SLAP_EV_PTRFD(slap_daemon.sd_epolls[index].data.ptr);      \
 191         slap_daemon.sd_index[fd] = index;       \
 192         slap_daemon.sd_index[s] = -1;   \
 193         slap_daemon.sd_nfds--;  \
 194 } while(0)
 195
 196 #define SLAP_EVENT_CLR_READ(i)  SLAP_CLR_EVENT(i, EPOLLIN)
 197 #define SLAP_EVENT_CLR_WRITE(i) SLAP_CLR_EVENT(i, EPOLLOUT)
 198
 199 #define SLAP_CHK_EVENT(i, mode) (revents[i].events & mode)
 200
 201 #define SLAP_EVENT_IS_READ(i)   SLAP_CHK_EVENT(i, EPOLLIN)
 202 #define SLAP_EVENT_IS_WRITE(i)  SLAP_CHK_EVENT(i, EPOLLOUT)
 203 #define SLAP_EVENT_IS_LISTENER(i)       SLAP_EV_LISTENER(revents[i].data.ptr)
 204 #define SLAP_EVENT_LISTENER(i)  (revents[i].data.ptr)
 205
 206 #define SLAP_EVENT_FD(i)        SLAP_EV_PTRFD(revents[i].data.ptr)
 207 #define SLAP_SOCK_SET_MUTE(s)   SLAP_SOCK_CLR_READ(s)
 208 #define SLAP_SOCK_CLR_MUTE(s)   SLAP_SOCK_SET_READ(s)
 209 #define SLAP_SOCK_IS_MUTE(s)    !SLAP_SOCK_IS_READ(s)
 210
 211 #define SLAP_SOCK_SET_INIT      \
 212         slap_daemon.sd_epolls = ch_malloc(sizeof(struct epoll_event) * dtblsize * 2);   \
 213         slap_daemon.sd_index = ch_malloc(sizeof(int) * dtblsize);       \
 214         slap_daemon.sd_epfd = epoll_create( dtblsize ); \
 215         for (i=0; i<dtblsize; i++) slap_daemon.sd_index[i] = -1
 216
 217
 218 #define SLAP_EVENT_DECL \
 219         struct epoll_event *revents
 220
 221 #define SLAP_EVENT_INIT \
 222         revents = slap_daemon.sd_epolls + dtblsize;     \
 223
 224 #define SLAP_EVENT_WAIT(tvp)    \
 225         epoll_wait( slap_daemon.sd_epfd, revents, dtblsize, tvp ? tvp->tv_sec * 1000 : -1 )
 226
 227 #else
 228
 229 /* select */
 230 #define SLAP_EVENTS_ARE_INDEXED 1
 231 #define SLAP_EVENT_DECL \
 232         fd_set readfds, writefds
 233
 234 #define SLAP_EVENT_INIT \
 235         AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) ); \
 236         if ( nwriters ) \
 237                 AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) )
 238
 239 #ifdef FD_SETSIZE
 240 #define CHK_SETSIZE     \
 241         if (dtblsize > FD_SETSIZE) dtblsize = FD_SETSIZE
 242 #else
 243 #define CHK_SETSIZE
 244 #endif
 245
 246 #define SLAP_SOCK_SET_INIT      \
 247         CHK_SETSIZE;    \
 248         FD_ZERO(&slap_daemon.sd_readers);       \
 249         FD_ZERO(&slap_daemon.sd_writers)
 250
 251 #define SLAP_SOCK_IS_ACTIVE(fd) FD_ISSET(fd, &slap_daemon.sd_actives)
 252
 253 #define SLAP_SOCK_IS_READ(fd)   FD_ISSET(fd, &slap_daemon.sd_readers)
 254 #define SLAP_SOCK_IS_WRITE(fd)  FD_ISSET(fd, &slap_daemon.sd_writers)
 255
 256 #define SLAP_SOCK_NOT_ACTIVE(fd)        (!SLAP_SOCK_IS_ACTIVE(fd) && \
 257          !SLAP_SOCK_IS_READ(fd) && !SLAP_SOCK_IS_WRITE(fd))
 258
 259 #ifdef HAVE_WINSOCK
 260 #define SLAP_SOCK_SET_READ(fd)  do { \
 261         if (!SLAP_SOCK_IS_READ(fd)) {FD_SET(fd, &slap_daemon.sd_readers);}      \
 262 } while(0)
 263 #define SLAP_SOCK_SET_WRITE(fd) do { \
 264         if (!SLAP_SOCK_IS_WRITE(fd)) {FD_SET(fd, &slap_daemon.sd_writers);}     \
 265 } while(0)
 266
 267 #define SLAP_ADDTEST(s)
 268 #define SLAP_EVENT_MAX  dtblsize
 269 #else
 270 #define SLAP_SOCK_SET_READ(fd)  FD_SET(fd, &slap_daemon.sd_readers)
 271 #define SLAP_SOCK_SET_WRITE(fd) FD_SET(fd, &slap_daemon.sd_writers)
 272
 273 #define SLAP_EVENT_MAX  slap_daemon.sd_nfds
 274 #define SLAP_ADDTEST(s) if (s >= slap_daemon.sd_nfds) slap_daemon.sd_nfds = s+1
 275 #endif
 276
 277 #define SLAP_SOCK_CLR_READ(fd)  FD_CLR(fd, &slap_daemon.sd_readers)
 278 #define SLAP_SOCK_CLR_WRITE(fd) FD_CLR(fd, &slap_daemon.sd_writers)
 279
 280 #define SLAP_ADD_SOCK(s, l) do {        \
 281         SLAP_ADDTEST(s);        \
 282         FD_SET(s, &slap_daemon.sd_actives);     \
 283         FD_SET(s, &slap_daemon.sd_readers);     \
 284 } while(0)
 285
 286 #define SLAP_DEL_SOCK(s) do {   \
 287         FD_CLR(s, &slap_daemon.sd_actives);     \
 288         FD_CLR(s, &slap_daemon.sd_readers);     \
 289         FD_CLR(s, &slap_daemon.sd_writers);     \
 290 } while(0)
 291
 292 #define SLAP_EVENT_IS_READ(fd)  FD_ISSET(fd, &readfds)
 293 #define SLAP_EVENT_IS_WRITE(fd) FD_ISSET(fd, &writefds)
 294
 295 #define SLAP_EVENT_CLR_READ(fd) FD_CLR(fd, &readfds)
 296 #define SLAP_EVENT_CLR_WRITE(fd)        FD_CLR(fd, &writefds)
 297
 298 #define SLAP_EVENT_WAIT(tvp)    \
 299         select( SLAP_EVENT_MAX, &readfds,       \
 300                 nwriters > 0 ? &writefds : NULL, NULL, tvp )
 301
 302 #define SLAP_SOCK_SET_MUTE(s)   FD_CLR(s, &readfds)
 303 #define SLAP_SOCK_CLR_MUTE(s)   FD_SET(s, &readfds)
 304 #define SLAP_SOCK_IS_MUTE(s)    FD_ISSET(s, &readfds)
 305
 306 #endif
 307
 308
 309 #ifdef HAVE_SLP
 310 /*
 311  * SLP related functions
 312  */
 313 #include <slp.h>
 314
 315 #define LDAP_SRVTYPE_PREFIX "service:ldap://"
 316 #define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
 317 static char** slapd_srvurls = NULL;
 318 static SLPHandle slapd_hslp = 0;
 319 int slapd_register_slp = 0;
 320
 321 void slapd_slp_init( const char* urls ) {
 322         int i;
 323
 324         slapd_srvurls = ldap_str2charray( urls, " " );
 325
 326         if( slapd_srvurls == NULL ) return;
 327
 328         /* find and expand INADDR_ANY URLs */
 329         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 330                 if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
 331                         char *host = ldap_pvt_get_fqdn( NULL );
 332                         if ( host != NULL ) {
 333                                 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 334                                         strlen( host ) +
 335                                         sizeof( LDAP_SRVTYPE_PREFIX ) );
 336                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 337                                         LDAP_SRVTYPE_PREFIX ), host );
 338
 339                                 ch_free( host );
 340                         }
 341
 342                 } else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
 343                         char *host = ldap_pvt_get_fqdn( NULL );
 344                         if ( host != NULL ) {
 345                                 slapd_srvurls[i] = (char *) ch_realloc( slapd_srvurls[i],
 346                                         strlen( host ) +
 347                                         sizeof( LDAPS_SRVTYPE_PREFIX ) );
 348                                 strcpy( lutil_strcopy(slapd_srvurls[i],
 349                                         LDAPS_SRVTYPE_PREFIX ), host );
 350
 351                                 ch_free( host );
 352                         }
 353                 }
 354         }
 355
 356         /* open the SLP handle */
 357         SLPOpen( "en", 0, &slapd_hslp );
 358 }
 359
 360 void slapd_slp_deinit() {
 361         if( slapd_srvurls == NULL ) return;
 362
 363         ldap_charray_free( slapd_srvurls );
 364         slapd_srvurls = NULL;
 365
 366         /* close the SLP handle */
 367         SLPClose( slapd_hslp );
 368 }
 369
 370 void slapd_slp_regreport(
 371         SLPHandle hslp,
 372         SLPError errcode,
 373         void* cookie )
 374 {
 375         /* empty report */
 376 }
 377
 378 void slapd_slp_reg() {
 379         int i;
 380
 381         if( slapd_srvurls == NULL ) return;
 382
 383         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 384                 if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
 385                                 sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
 386                     strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
 387                                 sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
 388                 {
 389                         SLPReg( slapd_hslp,
 390                                 slapd_srvurls[i],
 391                                 SLP_LIFETIME_MAXIMUM,
 392                                 "ldap",
 393                                 "",
 394                                 1,
 395                                 slapd_slp_regreport,
 396                                 NULL );
 397                 }
 398         }
 399 }
 400
 401 void slapd_slp_dereg() {
 402         int i;
 403
 404         if( slapd_srvurls == NULL ) return;
 405
 406         for( i=0; slapd_srvurls[i] != NULL; i++ ) {
 407                 SLPDereg( slapd_hslp,
 408                         slapd_srvurls[i],
 409                         slapd_slp_regreport,
 410                         NULL );
 411         }
 412 }
 413 #endif /* HAVE_SLP */
 414
 415 /*
 416  * Add a descriptor to daemon control
 417  *
 418  * If isactive, the descriptor is a live server session and is subject
 419  * to idletimeout control. Otherwise, the descriptor is a passive
 420  * listener or an outbound client session, and not subject to
 421  * idletimeout. The underlying event handler may record the Listener
 422  * argument to differentiate Listener's from real sessions.
 423  */
 424 static void slapd_add(ber_socket_t s, int isactive, Listener *sl) {
 425         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 426
 427         assert( SLAP_SOCK_NOT_ACTIVE(s) );
 428
 429         if ( isactive ) {
 430                 slap_daemon.sd_nactives++;
 431         }
 432
 433         SLAP_ADD_SOCK(s, sl);
 434
 435         Debug( LDAP_DEBUG_CONNS, "daemon: added %ldr\n",
 436                 (long) s, 0, 0 );
 437         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 438 }
 439
 440 /*
 441  * Remove the descriptor from daemon control
 442  */
 443 void slapd_remove(ber_socket_t s, int wasactive, int wake) {
 444         int waswriter;
 445         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 446
 447         if ( wasactive ) {
 448                 slap_daemon.sd_nactives--;
 449         }
 450         waswriter = SLAP_SOCK_IS_WRITE(s);
 451
 452         Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
 453                 (long) s, SLAP_SOCK_IS_READ(s) ? "r" : "",
 454                 waswriter ? "w" : "" );
 455         if ( waswriter ) slap_daemon.sd_nwriters--;
 456
 457         SLAP_DEL_SOCK(s);
 458
 459         /* If we ran out of file descriptors, we dropped a listener from
 460          * the select() loop. Now that we're removing a session from our
 461          * control, we can try to resume a dropped listener to use.
 462          */
 463         if ( emfile ) {
 464                 int i;
 465                 for ( i = 0; slap_listeners[i] != NULL; i++ ) {
 466                         if ( slap_listeners[i]->sl_sd != AC_SOCKET_INVALID ) {
 467                                 if ( slap_listeners[i]->sl_sd == s ) continue;
 468                                 if ( slap_listeners[i]->sl_is_mute ) {
 469                                         slap_listeners[i]->sl_is_mute = 0;
 470                                         emfile--;
 471                                         break;
 472                                 }
 473                         }
 474                 }
 475                 /* Walked the entire list without enabling anything; emfile
 476                  * counter is stale. Reset it.
 477                  */
 478                 if ( slap_listeners[i] == NULL )
 479                         emfile = 0;
 480         }
 481         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 482         WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
 483 }
 484
 485 void slapd_clr_write(ber_socket_t s, int wake) {
 486         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 487
 488         assert( SLAP_SOCK_IS_ACTIVE( s ));
 489         if ( SLAP_SOCK_IS_WRITE( s )) {
 490                 SLAP_SOCK_CLR_WRITE( s );
 491                 slap_daemon.sd_nwriters--;
 492         }
 493
 494         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 495         WAKE_LISTENER(wake);
 496 }
 497
 498 void slapd_set_write(ber_socket_t s, int wake) {
 499         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 500
 501         assert( SLAP_SOCK_IS_ACTIVE( s ));
 502         if ( !SLAP_SOCK_IS_WRITE( s )) {
 503                 SLAP_SOCK_SET_WRITE( s );
 504                 slap_daemon.sd_nwriters++;
 505         }
 506
 507         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 508         WAKE_LISTENER(wake);
 509 }
 510
 511 void slapd_clr_read(ber_socket_t s, int wake) {
 512         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 513
 514         assert( SLAP_SOCK_IS_ACTIVE( s ));
 515         SLAP_SOCK_CLR_READ( s );
 516
 517         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 518         WAKE_LISTENER(wake);
 519 }
 520
 521 void slapd_set_read(ber_socket_t s, int wake) {
 522         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 523
 524         assert( SLAP_SOCK_IS_ACTIVE( s ));
 525         if (!SLAP_SOCK_IS_READ( s ))
 526                 SLAP_SOCK_SET_READ( s );
 527
 528         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
 529         WAKE_LISTENER(wake);
 530 }
 531
 532 static void slapd_close(ber_socket_t s) {
 533         Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
 534                 (long) s, 0, 0 );
 535         tcp_close(s);
 536 }
 537
 538 static void slap_free_listener_addresses(struct sockaddr **sal)
 539 {
 540         struct sockaddr **sap;
 541
 542         if (sal == NULL) {
 543                 return;
 544         }
 545
 546         for (sap = sal; *sap != NULL; sap++) {
 547                 ch_free(*sap);
 548         }
 549
 550         ch_free(sal);
 551 }
 552
 553 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 554 static int get_url_perms(
 555         char    **exts,
 556         mode_t  *perms,
 557         int     *crit )
 558 {
 559         int     i;
 560
 561         assert( exts );
 562         assert( perms );
 563         assert( crit );
 564
 565         *crit = 0;
 566         for ( i = 0; exts[ i ]; i++ ) {
 567                 char    *type = exts[ i ];
 568                 int     c = 0;
 569
 570                 if ( type[ 0 ] == '!' ) {
 571                         c = 1;
 572                         type++;
 573                 }
 574
 575                 if ( strncasecmp( type, LDAPI_MOD_URLEXT "=", sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 ) {
 576                         char    *value = type
 577                                 + ( sizeof(LDAPI_MOD_URLEXT "=") - 1 );
 578                         mode_t  p = 0;
 579                         int     j;
 580
 581                         switch (strlen(value)) {
 582                         case 4:
 583                                 /* skip leading '0' */
 584                                 if ( value[ 0 ] != '0' ) {
 585                                         return LDAP_OTHER;
 586                                 }
 587                                 value++;
 588
 589                         case 3:
 590                                 for ( j = 0; j < 3; j++) {
 591                                         int     v;
 592
 593                                         v = value[ j ] - '0';
 594
 595                                         if ( v < 0 || v > 7 ) {
 596                                                 return LDAP_OTHER;
 597                                         }
 598
 599                                         p |= v << 3*(2-j);
 600                                 }
 601                                 break;
 602
 603                         case 10:
 604                                 for ( j = 1; j < 10; j++ ) {
 605                                         static mode_t   m[] = { 0,
 606                                                 S_IRUSR, S_IWUSR, S_IXUSR,
 607                                                 S_IRGRP, S_IWGRP, S_IXGRP,
 608                                                 S_IROTH, S_IWOTH, S_IXOTH
 609                                         };
 610                                         static char     c[] = "-rwxrwxrwx";
 611
 612                                         if ( value[ j ] == c[ j ] ) {
 613                                                 p |= m[ j ];
 614
 615                                         } else if ( value[ j ] != '-' ) {
 616                                                 return LDAP_OTHER;
 617                                         }
 618                                 }
 619                                 break;
 620
 621                         default:
 622                                 return LDAP_OTHER;
 623                         }
 624
 625                         *crit = c;
 626                         *perms = p;
 627
 628                         return LDAP_SUCCESS;
 629                 }
 630         }
 631
 632         return LDAP_OTHER;
 633 }
 634 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 635
 636 /* port = 0 indicates AF_LOCAL */
 637 static int slap_get_listener_addresses(
 638         const char *host,
 639         unsigned short port,
 640         struct sockaddr ***sal)
 641 {
 642         struct sockaddr **sap;
 643
 644 #ifdef LDAP_PF_LOCAL
 645         if ( port == 0 ) {
 646                 *sal = ch_malloc(2 * sizeof(void *));
 647                 if (*sal == NULL) {
 648                         return -1;
 649                 }
 650
 651                 sap = *sal;
 652                 *sap = ch_malloc(sizeof(struct sockaddr_un));
 653                 if (*sap == NULL)
 654                         goto errexit;
 655                 sap[1] = NULL;
 656
 657                 if ( strlen(host) >
 658                      (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 659                         Debug( LDAP_DEBUG_ANY,
 660                                "daemon: domain socket path (%s) too long in URL",
 661                                host, 0, 0);
 662                         goto errexit;
 663                 }
 664
 665                 (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
 666                 (*sap)->sa_family = AF_LOCAL;
 667                 strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
 668         } else
 669 #endif
 670         {
 671 #ifdef HAVE_GETADDRINFO
 672                 struct addrinfo hints, *res, *sai;
 673                 int n, err;
 674                 char serv[7];
 675
 676                 memset( &hints, '\0', sizeof(hints) );
 677                 hints.ai_flags = AI_PASSIVE;
 678                 hints.ai_socktype = SOCK_STREAM;
 679                 hints.ai_family = slap_inet4or6;
 680                 snprintf(serv, sizeof serv, "%d", port);
 681
 682                 if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
 683                         Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
 684                                 AC_GAI_STRERROR(err), 0, 0);
 685                         return -1;
 686                 }
 687
 688                 sai = res;
 689                 for (n=2; (sai = sai->ai_next) != NULL; n++) {
 690                         /* EMPTY */ ;
 691                 }
 692                 *sal = ch_calloc(n, sizeof(void *));
 693                 if (*sal == NULL) {
 694                         return -1;
 695                 }
 696
 697                 sap = *sal;
 698                 *sap = NULL;
 699
 700                 for ( sai=res; sai; sai=sai->ai_next ) {
 701                         if( sai->ai_addr == NULL ) {
 702                                 Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
 703                                         "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
 704                                 freeaddrinfo(res);
 705                                 goto errexit;
 706                         }
 707
 708                         switch (sai->ai_family) {
 709 #  ifdef LDAP_PF_INET6
 710                         case AF_INET6:
 711                                 *sap = ch_malloc(sizeof(struct sockaddr_in6));
 712                                 if (*sap == NULL) {
 713                                         freeaddrinfo(res);
 714                                         goto errexit;
 715                                 }
 716                                 *(struct sockaddr_in6 *)*sap =
 717                                         *((struct sockaddr_in6 *)sai->ai_addr);
 718                                 break;
 719 #  endif
 720                         case AF_INET:
 721                                 *sap = ch_malloc(sizeof(struct sockaddr_in));
 722                                 if (*sap == NULL) {
 723                                         freeaddrinfo(res);
 724                                         goto errexit;
 725                                 }
 726                                 *(struct sockaddr_in *)*sap =
 727                                         *((struct sockaddr_in *)sai->ai_addr);
 728                                 break;
 729                         default:
 730                                 *sap = NULL;
 731                                 break;
 732                         }
 733
 734                         if (*sap != NULL) {
 735                                 (*sap)->sa_family = sai->ai_family;
 736                                 sap++;
 737                                 *sap = NULL;
 738                         }
 739                 }
 740
 741                 freeaddrinfo(res);
 742 #else
 743                 int i, n = 1;
 744                 struct in_addr in;
 745                 struct hostent *he = NULL;
 746
 747                 if ( host == NULL ) {
 748                         in.s_addr = htonl(INADDR_ANY);
 749
 750                 } else if ( !inet_aton( host, &in ) ) {
 751                         he = gethostbyname( host );
 752                         if( he == NULL ) {
 753                                 Debug( LDAP_DEBUG_ANY,
 754                                        "daemon: invalid host %s", host, 0, 0);
 755                                 return -1;
 756                         }
 757                         for (n = 0; he->h_addr_list[n]; n++) ;
 758                 }
 759
 760                 *sal = ch_malloc((n+1) * sizeof(void *));
 761                 if (*sal == NULL) {
 762                         return -1;
 763                 }
 764
 765                 sap = *sal;
 766                 for ( i = 0; i<n; i++ ) {
 767                         sap[i] = ch_malloc(sizeof(struct sockaddr_in));
 768                         if (*sap == NULL) {
 769                                 goto errexit;
 770                         }
 771                         (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
 772                         sap[i]->sa_family = AF_INET;
 773                         ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
 774                         if (he) {
 775                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, he->h_addr_list[i], sizeof(struct in_addr) );
 776                         } else {
 777                                 AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, &in, sizeof(struct in_addr) );
 778                         }
 779                 }
 780                 sap[i] = NULL;
 781 #endif
 782         }
 783
 784         return 0;
 785
 786 errexit:
 787         slap_free_listener_addresses(*sal);
 788         return -1;
 789 }
 790
 791 static int slap_open_listener(
 792         const char* url,
 793         int *listeners,
 794         int *cur
 795         )
 796 {
 797         int     num, tmp, rc;
 798         Listener l;
 799         Listener *li;
 800         LDAPURLDesc *lud;
 801         unsigned short port;
 802         int err, addrlen = 0;
 803         struct sockaddr **sal, **psal;
 804         int socktype = SOCK_STREAM;     /* default to COTS */
 805
 806 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 807         /*
 808          * use safe defaults
 809          */
 810         int     crit = 1;
 811 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 812
 813         rc = ldap_url_parse( url, &lud );
 814
 815         if( rc != LDAP_URL_SUCCESS ) {
 816                 Debug( LDAP_DEBUG_ANY,
 817                         "daemon: listen URL \"%s\" parse error=%d\n",
 818                         url, rc, 0 );
 819                 return rc;
 820         }
 821
 822         l.sl_url.bv_val = NULL;
 823         l.sl_is_mute = 0;
 824
 825 #ifndef HAVE_TLS
 826         if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 827                 Debug( LDAP_DEBUG_ANY,
 828                         "daemon: TLS not supported (%s)\n",
 829                         url, 0, 0 );
 830                 ldap_free_urldesc( lud );
 831                 return -1;
 832         }
 833
 834         if(! lud->lud_port ) {
 835                 lud->lud_port = LDAP_PORT;
 836         }
 837
 838 #else
 839         l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme );
 840
 841         if(! lud->lud_port ) {
 842                 lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT;
 843         }
 844 #endif
 845
 846         port = (unsigned short) lud->lud_port;
 847
 848         tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
 849         if ( tmp == LDAP_PROTO_IPC ) {
 850 #ifdef LDAP_PF_LOCAL
 851                 if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
 852                         err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
 853                 } else {
 854                         err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
 855                 }
 856 #else
 857
 858                 Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
 859                         url, 0, 0);
 860                 ldap_free_urldesc( lud );
 861                 return -1;
 862 #endif
 863         } else {
 864                 if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
 865                         || strcmp(lud->lud_host, "*") == 0 )
 866                 {
 867                         err = slap_get_listener_addresses(NULL, port, &sal);
 868                 } else {
 869                         err = slap_get_listener_addresses(lud->lud_host, port, &sal);
 870                 }
 871         }
 872 #ifdef LDAP_CONNECTIONLESS
 873         l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
 874 #endif
 875
 876 #if defined(LDAP_PF_LOCAL) || defined(SLAP_X_LISTENER_MOD)
 877         if ( lud->lud_exts ) {
 878                 err = get_url_perms( lud->lud_exts, &l.sl_perms, &crit );
 879         } else {
 880                 l.sl_perms = S_IRWXU | S_IRWXO;
 881         }
 882 #endif /* LDAP_PF_LOCAL || SLAP_X_LISTENER_MOD */
 883
 884         ldap_free_urldesc( lud );
 885         if ( err ) {
 886                 return -1;
 887         }
 888
 889         /* If we got more than one address returned, we need to make space
 890          * for it in the slap_listeners array.
 891          */
 892         for ( num=0; sal[num]; num++ );
 893         if ( num > 1 ) {
 894                 *listeners += num-1;
 895                 slap_listeners = ch_realloc( slap_listeners, (*listeners + 1) * sizeof(Listener *) );
 896         }
 897
 898         psal = sal;
 899         while ( *sal != NULL ) {
 900                 char *af;
 901                 switch( (*sal)->sa_family ) {
 902                 case AF_INET:
 903                         af = "IPv4";
 904                         break;
 905 #ifdef LDAP_PF_INET6
 906                 case AF_INET6:
 907                         af = "IPv6";
 908                         break;
 909 #endif
 910 #ifdef LDAP_PF_LOCAL
 911                 case AF_LOCAL:
 912                         af = "Local";
 913                         break;
 914 #endif
 915                 default:
 916                         sal++;
 917                         continue;
 918                 }
 919 #ifdef LDAP_CONNECTIONLESS
 920                 if( l.sl_is_udp ) socktype = SOCK_DGRAM;
 921 #endif
 922                 l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
 923                 if ( l.sl_sd == AC_SOCKET_INVALID ) {
 924                         int err = sock_errno();
 925                         Debug( LDAP_DEBUG_ANY,
 926                                 "daemon: %s socket() failed errno=%d (%s)\n",
 927                                 af, err, sock_errstr(err) );
 928                         sal++;
 929                         continue;
 930                 }
 931 #ifndef HAVE_WINSOCK
 932                 if ( l.sl_sd >= dtblsize ) {
 933                         Debug( LDAP_DEBUG_ANY,
 934                                 "daemon: listener descriptor %ld is too great %ld\n",
 935                                 (long) l.sl_sd, (long) dtblsize, 0 );
 936                         tcp_close( l.sl_sd );
 937                         sal++;
 938                         continue;
 939                 }
 940 #endif
 941 #ifdef LDAP_PF_LOCAL
 942                 if ( (*sal)->sa_family == AF_LOCAL ) {
 943                         unlink ( ((struct sockaddr_un *)*sal)->sun_path );
 944                 } else
 945 #endif
 946                 {
 947 #ifdef SO_REUSEADDR
 948                         /* enable address reuse */
 949                         tmp = 1;
 950                         rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR,
 951                                 (char *) &tmp, sizeof(tmp) );
 952                         if ( rc == AC_SOCKET_ERROR ) {
 953                                 int err = sock_errno();
 954                                 Debug( LDAP_DEBUG_ANY,
 955                                        "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
 956                                        (long) l.sl_sd, err, sock_errstr(err) );
 957                         }
 958 #endif
 959                 }
 960
 961                 switch( (*sal)->sa_family ) {
 962                 case AF_INET:
 963                         addrlen = sizeof(struct sockaddr_in);
 964                         break;
 965 #ifdef LDAP_PF_INET6
 966                 case AF_INET6:
 967 #ifdef IPV6_V6ONLY
 968                         /* Try to use IPv6 sockets for IPv6 only */
 969                         tmp = 1;
 970                         rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
 971                                          (char *) &tmp, sizeof(tmp) );
 972                         if ( rc == AC_SOCKET_ERROR ) {
 973                                 int err = sock_errno();
 974                                 Debug( LDAP_DEBUG_ANY,
 975                                        "slapd(%ld): setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
 976                                        (long) l.sl_sd, err, sock_errstr(err) );
 977                         }
 978 #endif
 979                         addrlen = sizeof(struct sockaddr_in6);
 980                         break;
 981 #endif
 982 #ifdef LDAP_PF_LOCAL
 983                 case AF_LOCAL:
 984 #ifdef LOCAL_CREDS
 985                 {
 986                         int one = 1;
 987                         setsockopt(l.sl_sd, 0, LOCAL_CREDS, &one, sizeof one);
 988                 }
 989 #endif
 990                 addrlen = sizeof(struct sockaddr_un);
 991                 break;
 992 #endif
 993                 }
 994
 995                 if (bind(l.sl_sd, *sal, addrlen)) {
 996                         err = sock_errno();
 997                 Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
 998                        (long) l.sl_sd, err, sock_errstr(err) );
 999                         tcp_close( l.sl_sd );
1000                         sal++;
1001                         continue;
1002                 }
1003
1004         switch ( (*sal)->sa_family ) {
1005 #ifdef LDAP_PF_LOCAL
1006         case AF_LOCAL: {
1007                 char *addr = ((struct sockaddr_un *)*sal)->sun_path;
1008 #if 0 /* don't muck with socket perms */
1009                 if ( chmod( addr, l.sl_perms ) < 0 && crit ) {
1010                         int err = sock_errno();
1011                         Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
1012                                (long) l.sl_sd, err, sock_errstr(err) );
1013                         tcp_close( l.sl_sd );
1014                         slap_free_listener_addresses(psal);
1015                         return -1;
1016                 }
1017 #endif
1018                 l.sl_name.bv_len = strlen(addr) + sizeof("PATH=") - 1;
1019                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len + 1 );
1020                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len + 1,
1021                                 "PATH=%s", addr );
1022         } break;
1023 #endif /* LDAP_PF_LOCAL */
1024
1025         case AF_INET: {
1026                 char *s;
1027 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
1028                 char addr[INET_ADDRSTRLEN];
1029                 inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
1030                            addr, sizeof(addr) );
1031                 s = addr;
1032 #else
1033                 s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
1034 #endif
1035                 port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
1036                 l.sl_name.bv_val = ber_memalloc( sizeof("IP=255.255.255.255:65535") );
1037                 snprintf( l.sl_name.bv_val, sizeof("IP=255.255.255.255:65535"),
1038                         "IP=%s:%d",
1039                          s != NULL ? s : SLAP_STRING_UNKNOWN, port );
1040                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1041         } break;
1042
1043 #ifdef LDAP_PF_INET6
1044         case AF_INET6: {
1045                 char addr[INET6_ADDRSTRLEN];
1046                 inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
1047                            addr, sizeof addr);
1048                 port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
1049                 l.sl_name.bv_len = strlen(addr) + sizeof("IP= 65535");
1050                 l.sl_name.bv_val = ber_memalloc( l.sl_name.bv_len );
1051                 snprintf( l.sl_name.bv_val, l.sl_name.bv_len, "IP=%s %d",
1052                                 addr, port );
1053                 l.sl_name.bv_len = strlen( l.sl_name.bv_val );
1054         } break;
1055 #endif /* LDAP_PF_INET6 */
1056
1057         default:
1058                 Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
1059                         (int) (*sal)->sa_family, 0, 0 );
1060                 break;
1061         }
1062
1063         AC_MEMCPY(&l.sl_sa, *sal, addrlen);
1064         ber_str2bv( url, 0, 1, &l.sl_url);
1065         li = ch_malloc( sizeof( Listener ) );
1066         *li = l;
1067         slap_listeners[*cur] = li;
1068         (*cur)++;
1069         sal++;
1070
1071         } /* while ( *sal != NULL ) */
1072
1073         slap_free_listener_addresses(psal);
1074
1075         if ( l.sl_url.bv_val == NULL )
1076         {
1077                 Debug( LDAP_DEBUG_TRACE,
1078                         "slap_open_listener: failed on %s\n", url, 0, 0 );
1079                 return -1;
1080         }
1081
1082         Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
1083                 l.sl_url.bv_val, 0, 0 );
1084         return 0;
1085 }
1086
1087 static int sockinit(void);
1088 static int sockdestroy(void);
1089
1090 int slapd_daemon_init( const char *urls )
1091 {
1092         int i, j, n, rc;
1093         char **u;
1094
1095         Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
1096                 urls ? urls : "<null>", 0, 0 );
1097         if( (rc = sockinit()) != 0 ) {
1098                 return rc;
1099         }
1100
1101 #ifdef HAVE_SYSCONF
1102         dtblsize = sysconf( _SC_OPEN_MAX );
1103 #elif HAVE_GETDTABLESIZE
1104         dtblsize = getdtablesize();
1105 #else
1106         dtblsize = FD_SETSIZE;
1107 #endif
1108
1109         /* open a pipe (or something equivalent connected to itself).
1110          * we write a byte on this fd whenever we catch a signal. The main
1111          * loop will be select'ing on this socket, and will wake up when
1112          * this byte arrives.
1113          */
1114         if( (rc = lutil_pair( wake_sds )) < 0 ) {
1115                 Debug( LDAP_DEBUG_ANY,
1116                         "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
1117                 return rc;
1118         }
1119
1120         SLAP_SOCK_SET_INIT;
1121
1122         if( urls == NULL ) {
1123                 urls = "ldap:///";
1124         }
1125
1126         u = ldap_str2charray( urls, " " );
1127
1128         if( u == NULL || u[0] == NULL ) {
1129                 Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
1130                         urls, 0, 0 );
1131                 return -1;
1132         }
1133
1134         for( i=0; u[i] != NULL; i++ ) {
1135                 Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
1136                         u[i], 0, 0 );
1137         }
1138
1139         if( i == 0 ) {
1140                 Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
1141                         urls, 0, 0 );
1142                 ldap_charray_free( u );
1143                 return -1;
1144         }
1145
1146         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
1147                 i, 0, 0 );
1148         slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
1149
1150         for(n = 0, j = 0; u[n]; n++ ) {
1151                 if ( slap_open_listener( u[n], &i, &j ) ) {
1152                         ldap_charray_free( u );
1153                         return -1;
1154                 }
1155         }
1156         slap_listeners[j] = NULL;
1157
1158         Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
1159                 i, 0, 0 );
1160
1161 #ifdef HAVE_SLP
1162         if( slapd_register_slp ) {
1163                 slapd_slp_init( urls );
1164                 slapd_slp_reg();
1165         }
1166 #endif
1167
1168         ldap_charray_free( u );
1169         ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
1170         return !i;
1171 }
1172
1173
1174 int
1175 slapd_daemon_destroy(void)
1176 {
1177         connections_destroy();
1178         tcp_close( wake_sds[1] );
1179         tcp_close( wake_sds[0] );
1180         sockdestroy();
1181
1182 #ifdef HAVE_SLP
1183         if( slapd_register_slp ) {
1184                 slapd_slp_dereg();
1185                 slapd_slp_deinit();
1186         }
1187 #endif
1188
1189         return 0;
1190 }
1191
1192
1193 static void
1194 close_listeners(
1195         int remove
1196 )
1197 {
1198         int l;
1199
1200         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1201                 if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
1202                         if ( remove )
1203                                 slapd_remove( slap_listeners[l]->sl_sd, 0, 0 );
1204 #ifdef LDAP_PF_LOCAL
1205                         if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
1206                                 unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
1207                         }
1208 #endif /* LDAP_PF_LOCAL */
1209                         slapd_close( slap_listeners[l]->sl_sd );
1210                 }
1211                 if ( slap_listeners[l]->sl_url.bv_val )
1212                         ber_memfree( slap_listeners[l]->sl_url.bv_val );
1213                 if ( slap_listeners[l]->sl_name.bv_val )
1214                         ber_memfree( slap_listeners[l]->sl_name.bv_val );
1215                 free ( slap_listeners[l] );
1216                 slap_listeners[l] = NULL;
1217         }
1218 }
1219
1220 static int
1221 slapd_handle_listener(
1222         Listener *sl
1223 )
1224 {
1225         Sockaddr                from;
1226
1227         ber_socket_t s;
1228         socklen_t len = sizeof(from);
1229         long id;
1230         slap_ssf_t ssf = 0;
1231         struct berval authid = BER_BVNULL;
1232 #ifdef SLAPD_RLOOKUPS
1233         char hbuf[NI_MAXHOST];
1234 #endif
1235
1236         char    *dnsname = NULL;
1237         char    *peeraddr = NULL;
1238 #ifdef LDAP_PF_LOCAL
1239         char peername[MAXPATHLEN + sizeof("PATH=")];
1240 #elif defined(LDAP_PF_INET6)
1241         char peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
1242 #else
1243         char peername[sizeof("IP=255.255.255.255:65336")];
1244 #endif /* LDAP_PF_LOCAL */
1245
1246         peername[0] = '\0';
1247
1248 #ifdef LDAP_CONNECTIONLESS
1249         if ( sl->sl_is_udp ) {
1250                 /* The first time we receive a query, we set this
1251                  * up as a "connection". It remains open for the life
1252                  * of the slapd.
1253                  */
1254                 if ( sl->sl_is_udp < 2 ) {
1255                         id = connection_init( sl->sl_sd, sl, "", "",
1256                                 CONN_IS_UDP, ssf, NULL );
1257                     sl->sl_is_udp++;
1258                 }
1259                 return 1;
1260         }
1261 #endif
1262
1263 #  ifdef LDAP_PF_LOCAL
1264         /* FIXME: apparently accept doesn't fill
1265          * the sun_path sun_path member */
1266         from.sa_un_addr.sun_path[0] = '\0';
1267 #  endif /* LDAP_PF_LOCAL */
1268
1269         s = accept( sl->sl_sd, (struct sockaddr *) &from, &len );
1270         if ( s == AC_SOCKET_INVALID ) {
1271                 int err = sock_errno();
1272
1273                 if(
1274 #ifdef EMFILE
1275                     err == EMFILE ||
1276 #endif
1277 #ifdef ENFILE
1278                     err == ENFILE ||
1279 #endif
1280                     0 )
1281                 {
1282                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1283                         emfile++;
1284                         /* Stop listening until an existing session closes */
1285                         sl->sl_is_mute = 1;
1286                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1287                 }
1288
1289                 Debug( LDAP_DEBUG_ANY,
1290                         "daemon: accept(%ld) failed errno=%d (%s)\n",
1291                         (long) sl->sl_sd, err,
1292                         sock_errstr(err) );
1293                 ldap_pvt_thread_yield();
1294                 return 0;
1295         }
1296
1297 #ifndef HAVE_WINSOCK
1298         /* make sure descriptor number isn't too great */
1299         if ( s >= dtblsize ) {
1300                 Debug( LDAP_DEBUG_ANY,
1301                         "daemon: %ld beyond descriptor table size %ld\n",
1302                         (long) s, (long) dtblsize, 0 );
1303
1304                 slapd_close(s);
1305                 ldap_pvt_thread_yield();
1306                 return 0;
1307         }
1308 #endif
1309
1310 #ifdef LDAP_DEBUG
1311         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1312
1313         /* newly accepted stream should not be in any of the FD SETS */
1314         assert( SLAP_SOCK_NOT_ACTIVE( s ));
1315
1316         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1317 #endif
1318
1319 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
1320 #ifdef LDAP_PF_LOCAL
1321         /* for IPv4 and IPv6 sockets only */
1322         if ( from.sa_addr.sa_family != AF_LOCAL )
1323 #endif /* LDAP_PF_LOCAL */
1324         {
1325                 int rc;
1326                 int tmp;
1327 #ifdef SO_KEEPALIVE
1328                 /* enable keep alives */
1329                 tmp = 1;
1330                 rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
1331                         (char *) &tmp, sizeof(tmp) );
1332                 if ( rc == AC_SOCKET_ERROR ) {
1333                         int err = sock_errno();
1334                         Debug( LDAP_DEBUG_ANY,
1335                                 "slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
1336                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1337                 }
1338 #endif
1339 #ifdef TCP_NODELAY
1340                 /* enable no delay */
1341                 tmp = 1;
1342                 rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
1343                         (char *)&tmp, sizeof(tmp) );
1344                 if ( rc == AC_SOCKET_ERROR ) {
1345                         int err = sock_errno();
1346                         Debug( LDAP_DEBUG_ANY,
1347                                 "slapd(%ld): setsockopt(TCP_NODELAY) failed "
1348                                 "errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
1349                 }
1350 #endif
1351         }
1352 #endif
1353
1354         Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
1355                 (long) s, 0, 0 );
1356         switch ( from.sa_addr.sa_family ) {
1357 #  ifdef LDAP_PF_LOCAL
1358         case AF_LOCAL:
1359                 /* FIXME: apparently accept doesn't fill
1360                  * the sun_path sun_path member */
1361                 if ( from.sa_un_addr.sun_path[0] == '\0' ) {
1362                         AC_MEMCPY( from.sa_un_addr.sun_path,
1363                                         sl->sl_sa.sa_un_addr.sun_path,
1364                                         sizeof( from.sa_un_addr.sun_path ) );
1365                 }
1366
1367                 sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
1368                 ssf = local_ssf;
1369                 {
1370                         uid_t uid;
1371                         gid_t gid;
1372
1373                         if( getpeereid( s, &uid, &gid ) == 0 ) {
1374                                 authid.bv_val = ch_malloc(
1375                                         sizeof("uidnumber=4294967295+gidnumber=4294967295,"
1376                                         "cn=peercred,cn=external,cn=auth"));
1377                                 authid.bv_len = sprintf( authid.bv_val,
1378                                         "uidnumber=%d+gidnumber=%d,"
1379                                         "cn=peercred,cn=external,cn=auth",
1380                                         (int) uid, (int) gid);
1381                         }
1382                 }
1383                 dnsname = "local";
1384                 break;
1385 #endif /* LDAP_PF_LOCAL */
1386
1387 #  ifdef LDAP_PF_INET6
1388         case AF_INET6:
1389         if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
1390                 peeraddr = inet_ntoa( *((struct in_addr *)
1391                                         &from.sa_in6_addr.sin6_addr.s6_addr[12]) );
1392                 sprintf( peername, "IP=%s:%d",
1393                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1394                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1395         } else {
1396                 char addr[INET6_ADDRSTRLEN];
1397
1398                 peeraddr = (char *) inet_ntop( AF_INET6,
1399                                       &from.sa_in6_addr.sin6_addr,
1400                                       addr, sizeof addr );
1401                 sprintf( peername, "IP=%s %d",
1402                          peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1403                          (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
1404         }
1405         break;
1406 #  endif /* LDAP_PF_INET6 */
1407
1408         case AF_INET:
1409         peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
1410         sprintf( peername, "IP=%s:%d",
1411                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1412                 (unsigned) ntohs( from.sa_in_addr.sin_port ) );
1413                 break;
1414
1415         default:
1416                 slapd_close(s);
1417                 return 0;
1418         }
1419
1420         if ( ( from.sa_addr.sa_family == AF_INET )
1421 #ifdef LDAP_PF_INET6
1422                 || ( from.sa_addr.sa_family == AF_INET6 )
1423 #endif
1424         ) {
1425 #ifdef SLAPD_RLOOKUPS
1426                 if ( use_reverse_lookup ) {
1427                         char *herr;
1428                         if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
1429                                 sizeof(hbuf), &herr ) == 0) {
1430                                 ldap_pvt_str2lower( hbuf );
1431                                 dnsname = hbuf;
1432                         }
1433                 }
1434 #else
1435                 dnsname = NULL;
1436 #endif /* SLAPD_RLOOKUPS */
1437
1438 #ifdef HAVE_TCPD
1439                 if ( !hosts_ctl("slapd",
1440                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1441                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1442                                 SLAP_STRING_UNKNOWN ))
1443                 {
1444                         /* DENY ACCESS */
1445                         Statslog( LDAP_DEBUG_STATS,
1446                                 "fd=%ld DENIED from %s (%s)\n",
1447                                 (long) s,
1448                                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1449                                 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
1450                                 0, 0 );
1451                         slapd_close(s);
1452                         return 0;
1453                 }
1454 #endif /* HAVE_TCPD */
1455         }
1456
1457         id = connection_init(s, sl,
1458                 dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
1459                 peername,
1460 #ifdef HAVE_TLS
1461                 sl->sl_is_tls ? CONN_IS_TLS : 0,
1462 #else
1463                 0,
1464 #endif
1465                 ssf,
1466                 authid.bv_val ? &authid : NULL );
1467
1468         if( authid.bv_val ) ch_free(authid.bv_val);
1469
1470         if( id < 0 ) {
1471                 Debug( LDAP_DEBUG_ANY,
1472                         "daemon: connection_init(%ld, %s, %s) failed.\n",
1473                         (long) s, peername, sl->sl_name.bv_val );
1474                 slapd_close(s);
1475                 return 0;
1476         }
1477
1478         Statslog( LDAP_DEBUG_STATS,
1479                 "conn=%ld fd=%ld ACCEPT from %s (%s)\n",
1480                 id, (long) s, peername, sl->sl_name.bv_val,
1481                 0 );
1482
1483         slapd_add( s, 1, NULL );
1484         return 0;
1485 }
1486
1487 static void *
1488 slapd_daemon_task(
1489         void *ptr
1490 )
1491 {
1492         int l;
1493         time_t  last_idle_check = 0;
1494         struct timeval idle;
1495         int ebadf = 0;
1496
1497 #define SLAPD_IDLE_CHECK_LIMIT 4
1498
1499         if ( global_idletimeout > 0 ) {
1500                 last_idle_check = slap_get_time();
1501                 /* Set the select timeout.
1502                  * Don't just truncate, preserve the fractions of
1503                  * seconds to prevent sleeping for zero time.
1504                  */
1505                 idle.tv_sec = global_idletimeout/SLAPD_IDLE_CHECK_LIMIT;
1506                 idle.tv_usec = global_idletimeout - idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT;
1507                 idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
1508         } else {
1509                 idle.tv_sec = 0;
1510                 idle.tv_usec = 0;
1511         }
1512
1513         slapd_add( wake_sds[0], 0, NULL );
1514
1515         for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1516                 if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1517                         continue;
1518 #ifdef LDAP_CONNECTIONLESS
1519                 /* Since this is connectionless, the data port is the
1520                  * listening port. The listen() and accept() calls
1521                  * are unnecessary.
1522                  */
1523                 if ( slap_listeners[l]->sl_is_udp ) {
1524                         slapd_add( slap_listeners[l]->sl_sd, 1, slap_listeners[l] );
1525                         continue;
1526                 }
1527 #endif
1528
1529                 if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN_BACKLOG ) == -1 ) {
1530                         int err = sock_errno();
1531
1532 #ifdef LDAP_PF_INET6
1533                         /* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
1534                          * we are already listening to in6addr_any, then we want to ignore
1535                          * this and continue.
1536                          */
1537                         if ( err == EADDRINUSE ) {
1538                                 int i;
1539                                 struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
1540                                 struct sockaddr_in6 sa6;
1541
1542                                 if ( sa.sin_family == AF_INET &&
1543                                      sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
1544                                         for ( i = 0 ; i < l; i++ ) {
1545                                                 sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
1546                                                 if ( sa6.sin6_family == AF_INET6 &&
1547                                                      !memcmp( &sa6.sin6_addr, &in6addr_any, sizeof(struct in6_addr) ) )
1548                                                         break;
1549                                         }
1550
1551                                         if ( i < l ) {
1552                                                 /* We are already listening to in6addr_any */
1553                                                 Debug( LDAP_DEBUG_CONNS,
1554                                                        "daemon: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n",
1555                                                        0, 0, 0 );
1556                                                 slapd_close( slap_listeners[l]->sl_sd );
1557                                                 slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
1558                                                 continue;
1559                                         }
1560                                 }
1561                         }
1562 #endif
1563                         Debug( LDAP_DEBUG_ANY,
1564                                 "daemon: listen(%s, 5) failed errno=%d (%s)\n",
1565                                         slap_listeners[l]->sl_url.bv_val, err,
1566                                         sock_errstr(err) );
1567                         return( (void*)-1 );
1568                 }
1569
1570                 slapd_add( slap_listeners[l]->sl_sd, 0, slap_listeners[l] );
1571         }
1572
1573 #ifdef HAVE_NT_SERVICE_MANAGER
1574         if ( started_event != NULL ) {
1575                 ldap_pvt_thread_cond_signal( &started_event );
1576         }
1577 #endif
1578         /* initialization complete. Here comes the loop. */
1579
1580         while ( !slapd_shutdown ) {
1581                 ber_socket_t i;
1582                 int ns, nwriters;
1583                 int at;
1584                 ber_socket_t nfds, nrfds, nwfds;
1585 #define SLAPD_EBADF_LIMIT 16
1586
1587                 time_t  now;
1588
1589                 SLAP_EVENT_DECL;
1590
1591                 struct timeval          tv;
1592                 struct timeval          *tvp;
1593
1594                 struct timeval          *cat;
1595                 time_t                          tdelta = 1;
1596                 struct re_s*            rtask;
1597                 now = slap_get_time();
1598
1599                 if( ( global_idletimeout > 0 ) &&
1600                         difftime( last_idle_check +
1601                         global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
1602                         connections_timeout_idle( now );
1603                         last_idle_check = now;
1604                 }
1605                 tv = idle;
1606
1607 #ifdef SIGHUP
1608                 if( slapd_gentle_shutdown ) {
1609                         ber_socket_t active;
1610
1611                         if( slapd_gentle_shutdown == 1 ) {
1612                                 Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
1613                                 close_listeners( 1 );
1614                                 frontendDB->be_restrictops |= SLAP_RESTRICT_OP_WRITES;
1615                                 slapd_gentle_shutdown = 2;
1616                         }
1617
1618                         ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1619                         active = slap_daemon.sd_nactives;
1620                         ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1621                         if( active == 0 ) {
1622                                 slapd_shutdown = 2;
1623                                 break;
1624                         }
1625                 }
1626 #endif
1627
1628                 at = 0;
1629
1630                 ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
1631
1632                 nwriters = slap_daemon.sd_nwriters;
1633                 SLAP_EVENT_INIT;
1634
1635                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1636                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1637                                 continue;
1638                         if ( slap_listeners[l]->sl_is_mute )
1639                                 SLAP_SOCK_SET_MUTE( slap_listeners[l]->sl_sd );
1640                         else
1641                         if ( SLAP_SOCK_IS_MUTE( slap_listeners[l]->sl_sd ))
1642                             SLAP_SOCK_CLR_MUTE( slap_listeners[l]->sl_sd );
1643                 }
1644
1645                 nfds = SLAP_EVENT_MAX;
1646
1647                 if ( global_idletimeout && slap_daemon.sd_nactives )
1648                         at = 1;
1649
1650                 ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
1651
1652                 if ( at
1653 #if defined(HAVE_YIELDING_SELECT) || defined(NO_THREADS)
1654                         &&  ( tv.tv_sec || tv.tv_usec )
1655 #endif
1656                         )
1657                         tvp = &tv;
1658                 else
1659                         tvp = NULL;
1660
1661                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1662                 rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
1663                 while ( cat && cat->tv_sec && cat->tv_sec <= now ) {
1664                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
1665                                 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1666                         } else {
1667                                 ldap_pvt_runqueue_runtask( &slapd_rq, rtask );
1668                                 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
1669                                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1670                                 ldap_pvt_thread_pool_submit( &connection_pool,
1671                                                                                         rtask->routine, (void *) rtask );
1672                                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1673                         }
1674                         rtask = ldap_pvt_runqueue_next_sched( &slapd_rq, &cat );
1675                 }
1676                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1677
1678                 if ( cat && cat->tv_sec ) {
1679                         time_t diff = difftime( cat->tv_sec, now );
1680                         if ( diff == 0 )
1681                                 diff = tdelta;
1682                         if ( tvp == NULL || diff < tv.tv_sec ) {
1683                                 tv.tv_sec = diff;
1684                                 tv.tv_usec = 0;
1685                                 tvp = &tv;
1686                         }
1687                 }
1688
1689                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1690                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ||
1691                             slap_listeners[l]->sl_is_mute )
1692                                 continue;
1693
1694                         Debug( LDAP_DEBUG_CONNS,
1695                                 "daemon: select: listen=%d active_threads=%d tvp=%s\n",
1696                                         slap_listeners[l]->sl_sd, at,
1697                                         tvp == NULL ? "NULL" : "zero" );
1698                 }
1699
1700                 switch(ns = SLAP_EVENT_WAIT(tvp))
1701                 {
1702                 case -1: {      /* failure - try again */
1703                                 int err = sock_errno();
1704
1705                                 if( err == EBADF
1706 #ifdef WSAENOTSOCK
1707                                         /* you'd think this would be EBADF */
1708                                         || err == WSAENOTSOCK
1709 #endif
1710                                 ) {
1711                                         if (++ebadf < SLAPD_EBADF_LIMIT)
1712                                                 continue;
1713                                 }
1714
1715                                 if( err != EINTR ) {
1716                                         Debug( LDAP_DEBUG_CONNS,
1717                                                 "daemon: select failed (%d): %s\n",
1718                                                 err, sock_errstr(err), 0 );
1719                                         slapd_shutdown = 2;
1720                                 }
1721                         }
1722                         continue;
1723
1724                 case 0:         /* timeout - let threads run */
1725                         ebadf = 0;
1726 #ifndef HAVE_YIELDING_SELECT
1727                         Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
1728                             0, 0, 0 );
1729
1730                         ldap_pvt_thread_yield();
1731 #endif
1732                         continue;
1733
1734                 default:        /* something happened - deal with it */
1735                         if( slapd_shutdown ) continue;
1736
1737                         ebadf = 0;
1738                         Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
1739                                 ns, 0, 0 );
1740                         /* FALL THRU */
1741                 }
1742
1743 #if SLAP_EVENTS_ARE_INDEXED
1744                 if ( SLAP_EVENT_IS_READ( wake_sds[0] )) {
1745                         char c[BUFSIZ];
1746                         tcp_read( wake_sds[0], c, sizeof(c) );
1747                         waking = 0;
1748                         ns--;
1749                         SLAP_EVENT_CLR_READ( wake_sds[0] );
1750                         continue;
1751                 }
1752
1753                 /* The event slot equals the descriptor number - this is
1754                  * true for Unix select and poll. We treat Windows select
1755                  * like this too, even though it's a kludge.
1756                  */
1757                 for ( l = 0; slap_listeners[l] != NULL; l++ ) {
1758                         int rc;
1759
1760                         if ( ns <= 0 ) break;
1761
1762                         if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
1763                                 continue;
1764
1765                         if ( !SLAP_EVENT_IS_READ( slap_listeners[l]->sl_sd ))
1766                                 continue;
1767
1768                         ns--;
1769
1770                         rc = slapd_handle_listener(slap_listeners[l]);
1771
1772 #ifdef LDAP_CONNECTIONLESS
1773                         /* This is a UDP session, let the data loop process it */
1774                         if ( rc ) continue;
1775 #endif
1776
1777                         /* Don't need to look at this in the data loops */
1778                         SLAP_EVENT_CLR_READ( slap_listeners[l]->sl_sd );
1779                         SLAP_EVENT_CLR_WRITE( slap_listeners[l]->sl_sd );
1780                 }
1781
1782                 /* bypass the following tests if no descriptors left */
1783                 if ( ns <= 0 ) {
1784 #ifndef HAVE_YIELDING_SELECT
1785                         ldap_pvt_thread_yield();
1786 #endif
1787                         continue;
1788                 }
1789
1790                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1791 #ifdef HAVE_WINSOCK
1792                 nrfds = readfds.fd_count;
1793                 nwfds = writefds.fd_count;
1794                 for ( i = 0; i < readfds.fd_count; i++ ) {
1795                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1796                                 readfds.fd_array[i], "r", 0 );
1797                 }
1798                 for ( i = 0; i < writefds.fd_count; i++ ) {
1799                         Debug( LDAP_DEBUG_CONNS, " %d%s",
1800                                 writefds.fd_array[i], "w", 0 );
1801                 }
1802
1803 #else
1804                 nrfds = 0;
1805                 nwfds = 0;
1806                 for ( i = 0; i < nfds; i++ ) {
1807                         int     r, w;
1808
1809                         r = SLAP_EVENT_IS_READ( i );
1810                         w = SLAP_EVENT_IS_WRITE( i );
1811                         if ( r || w ) {
1812                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
1813                                     r ? "r" : "", w ? "w" : "" );
1814                                 if ( r ) {
1815                                         nrfds++;
1816                                         ns--;
1817                                 }
1818                                 if ( w ) {
1819                                         nwfds++;
1820                                         ns--;
1821                                 }
1822                         }
1823                         if ( ns <= 0 ) break;
1824                 }
1825 #endif
1826                 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
1827
1828
1829                 /* loop through the writers */
1830                 for ( i = 0; nwfds > 0; i++ )
1831                 {
1832                         ber_socket_t wd;
1833 #ifdef HAVE_WINSOCK
1834                         wd = writefds.fd_array[i];
1835 #else
1836                         if( ! SLAP_EVENT_IS_WRITE( i ) ) {
1837                                 continue;
1838                         }
1839                         wd = i;
1840 #endif
1841                         nwfds--;
1842
1843                         Debug( LDAP_DEBUG_CONNS,
1844                                 "daemon: write active on %d\n",
1845                                 wd, 0, 0 );
1846                         /*
1847                          * NOTE: it is possible that the connection was closed
1848                          * and that the stream is now inactive.
1849                          * connection_write() must valid the stream is still
1850                          * active.
1851                          */
1852
1853                         if ( connection_write( wd ) < 0 ) {
1854                                 if ( SLAP_EVENT_IS_READ( wd )) {
1855                                         SLAP_EVENT_CLR_READ( (unsigned) wd );
1856                                         nrfds--;
1857                                 }
1858                                 slapd_close( wd );
1859                         }
1860                         SLAP_EVENT_CLR_WRITE( wd );
1861                 }
1862
1863                 for ( i = 0; nrfds > 0; i++ )
1864                 {
1865                         ber_socket_t rd;
1866 #ifdef HAVE_WINSOCK
1867                         rd = readfds.fd_array[i];
1868 #else
1869                         if( ! SLAP_EVENT_IS_READ( i ) ) {
1870                                 continue;
1871                         }
1872                         rd = i;
1873 #endif
1874                         nrfds--;
1875
1876                         Debug ( LDAP_DEBUG_CONNS,
1877                                 "daemon: read activity on %d\n", rd, 0, 0 );
1878                         /*
1879                          * NOTE: it is possible that the connection was closed
1880                          * and that the stream is now inactive.
1881                          * connection_read() must valid the stream is still
1882                          * active.
1883                          */
1884
1885                         if ( connection_read( rd ) < 0 ) {
1886                                 slapd_close( rd );
1887                         }
1888                 }
1889 #else   /* !SLAP_EVENTS_ARE_INDEXED */
1890         /* FIXME */
1891         /* The events are returned in an arbitrary list. This is true
1892          * for /dev/poll, epoll and kqueue. In order to prioritize things
1893          * so that we can handle wake_sds first, listeners second, and then
1894          * all other connections last (as we do for select), we would need
1895          * to use multiple event handles and cascade them.
1896          *
1897          * That seems like a bit of hassle. So the wake_sds check has been
1898          * skipped. For epoll and kqueue we can associate arbitrary data with
1899          * an event, so we could use pointers to the listener structure
1900          * instead of just the file descriptor. For /dev/poll we have to
1901          * search the listeners array for a matching descriptor.
1902          */
1903                 /* if waking is set and we woke up, we'll read whatever
1904                  * we can.
1905                  */
1906                 if ( waking ) {
1907                         char c[BUFSIZ];
1908                         tcp_read( wake_sds[0], c, sizeof(c) );
1909                         waking = 0;
1910                         ns--;
1911                         continue;
1912                 }
1913
1914 #ifdef LDAP_DEBUG
1915                 Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
1916
1917                 for (i=0; i<ns; i++) {
1918                         int     r, w;
1919
1920                         if ( SLAP_EVENT_IS_LISTENER(i)
1921 #ifdef LDAP_CONNECTIONLESS
1922                         && !((SLAP_EVENT_LISTENER(i))->sl_is_udp)
1923 #endif
1924                          ) continue;
1925
1926                         r = SLAP_EVENT_IS_READ( i );
1927                         w = SLAP_EVENT_IS_WRITE( i );
1928                         if ( r || w ) {
1929                                 Debug( LDAP_DEBUG_CONNS, " %d%s%s", SLAP_EVENT_FD(i),
1930                                     r ? "r" : "", w ? "w" : "" );
1931                         }
1932                 }
1933 #endif
1934                 for (i=0; i<ns; i++) {
1935                         int rc = 1, fd;
1936
1937                         if ( SLAP_EVENT_IS_LISTENER(i) ) {
1938                                 rc = slapd_handle_listener( SLAP_EVENT_LISTENER( i ));
1939                         }
1940                         /* If we found a regular listener, rc is now zero, and we
1941                          * can skip the data portion. But if it was a UDP listener
1942                          * then rc is still 1, and we want to handle the data.
1943                          */
1944                         if ( rc ) {
1945                                 fd = SLAP_EVENT_FD( i );
1946
1947                                 if( SLAP_EVENT_IS_WRITE( i ) ) {
1948                                         Debug( LDAP_DEBUG_CONNS,
1949                                                 "daemon: write active on %d\n",
1950                                                 fd, 0, 0 );
1951                                         /*
1952                                          * NOTE: it is possible that the connection was closed
1953                                          * and that the stream is now inactive.
1954                                          * connection_write() must valid the stream is still
1955                                          * active.
1956                                          */
1957
1958                                         if ( connection_write( fd ) < 0 ) {
1959                                                 slapd_close( fd );
1960                                                 continue;
1961                                         }
1962                                 }
1963                                 if( SLAP_EVENT_IS_READ( i ) ) {
1964                                         Debug( LDAP_DEBUG_CONNS,
1965                                                 "daemon: read active on %d\n",
1966                                                 fd, 0, 0 );
1967                                         /*
1968                                          * NOTE: it is possible that the connection was closed
1969                                          * and that the stream is now inactive.
1970                                          * connection_read() must valid the stream is still
1971                                          * active.
1972                                          */
1973
1974                                         if ( connection_read( fd ) < 0 ) {
1975                                                 slapd_close( fd );
1976                                         }
1977                                 }
1978                         }
1979                 }
1980 #endif  /* SLAP_EVENTS_ARE_INDEXED */
1981
1982 #ifndef HAVE_YIELDING_SELECT
1983                 ldap_pvt_thread_yield();
1984 #endif
1985         }
1986
1987         if( slapd_shutdown == 1 ) {
1988                 Debug( LDAP_DEBUG_ANY,
1989                         "daemon: shutdown requested and initiated.\n",
1990                         0, 0, 0 );
1991
1992         } else if ( slapd_shutdown == 2 ) {
1993 #ifdef HAVE_NT_SERVICE_MANAGER
1994                         Debug( LDAP_DEBUG_ANY,
1995                                "daemon: shutdown initiated by Service Manager.\n",
1996                                0, 0, 0);
1997 #else /* !HAVE_NT_SERVICE_MANAGER */
1998                         Debug( LDAP_DEBUG_ANY,
1999                                "daemon: abnormal condition, shutdown initiated.\n",
2000                                0, 0, 0 );
2001 #endif /* !HAVE_NT_SERVICE_MANAGER */
2002         } else {
2003                 Debug( LDAP_DEBUG_ANY,
2004                        "daemon: no active streams, shutdown initiated.\n",
2005                        0, 0, 0 );
2006         }
2007
2008         if( slapd_gentle_shutdown != 2 ) {
2009                 close_listeners ( 0 );
2010         }
2011
2012         free ( slap_listeners );
2013         slap_listeners = NULL;
2014
2015         if( !slapd_gentle_shutdown ) {
2016                 slapd_abrupt_shutdown = 1;
2017                 connections_shutdown();
2018         }
2019
2020         Debug( LDAP_DEBUG_ANY,
2021             "slapd shutdown: waiting for %d threads to terminate\n",
2022             ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
2023         ldap_pvt_thread_pool_destroy(&connection_pool, 1);
2024
2025         return NULL;
2026 }
2027
2028
2029 int slapd_daemon( void )
2030 {
2031         int rc;
2032
2033         connections_init();
2034
2035 #define SLAPD_LISTENER_THREAD 1
2036 #if defined( SLAPD_LISTENER_THREAD )
2037         {
2038                 ldap_pvt_thread_t       listener_tid;
2039
2040                 /* listener as a separate THREAD */
2041                 rc = ldap_pvt_thread_create( &listener_tid,
2042                         0, slapd_daemon_task, NULL );
2043
2044                 if ( rc != 0 ) {
2045                         Debug( LDAP_DEBUG_ANY,
2046                         "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
2047                         return rc;
2048                 }
2049
2050                 /* wait for the listener thread to complete */
2051                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
2052         }
2053 #else
2054         /* experimental code */
2055         slapd_daemon_task( NULL );
2056 #endif
2057
2058         return 0;
2059
2060 }
2061
2062 int sockinit(void)
2063 {
2064 #if defined( HAVE_WINSOCK2 )
2065     WORD wVersionRequested;
2066         WSADATA wsaData;
2067         int err;
2068
2069         wVersionRequested = MAKEWORD( 2, 0 );
2070
2071         err = WSAStartup( wVersionRequested, &wsaData );
2072         if ( err != 0 ) {
2073                 /* Tell the user that we couldn't find a usable */
2074                 /* WinSock DLL.                                  */
2075                 return -1;
2076         }
2077
2078         /* Confirm that the WinSock DLL supports 2.0.*/
2079         /* Note that if the DLL supports versions greater    */
2080         /* than 2.0 in addition to 2.0, it will still return */
2081         /* 2.0 in wVersion since that is the version we      */
2082         /* requested.                                        */
2083
2084         if ( LOBYTE( wsaData.wVersion ) != 2 ||
2085                 HIBYTE( wsaData.wVersion ) != 0 )
2086         {
2087             /* Tell the user that we couldn't find a usable */
2088             /* WinSock DLL.                                  */
2089             WSACleanup();
2090             return -1;
2091         }
2092
2093         /* The WinSock DLL is acceptable. Proceed. */
2094 #elif defined( HAVE_WINSOCK )
2095         WSADATA wsaData;
2096         if ( WSAStartup( 0x0101, &wsaData ) != 0 ) {
2097             return -1;
2098         }
2099 #endif
2100         return 0;
2101 }
2102
2103 int sockdestroy(void)
2104 {
2105 #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK )
2106         WSACleanup();
2107 #endif
2108         return 0;
2109 }
2110
2111 RETSIGTYPE
2112 slap_sig_shutdown( int sig )
2113 {
2114 #if 0
2115         Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
2116 #endif
2117
2118         /*
2119          * If the NT Service Manager is controlling the server, we don't
2120          * want SIGBREAK to kill the server. For some strange reason,
2121          * SIGBREAK is generated when a user logs out.
2122          */
2123
2124 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
2125         if (is_NT_Service && sig == SIGBREAK)
2126                 ;
2127         else
2128 #endif
2129 #ifdef SIGHUP
2130         if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0)
2131                 slapd_gentle_shutdown = 1;
2132         else
2133 #endif
2134         slapd_shutdown = 1;
2135         WAKE_LISTENER(1);
2136
2137         /* reinstall self */
2138         (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown );
2139 }
2140
2141 RETSIGTYPE
2142 slap_sig_wake( int sig )
2143 {
2144         WAKE_LISTENER(1);
2145
2146         /* reinstall self */
2147         (void) SIGNAL_REINSTALL( sig, slap_sig_wake );
2148 }
2149
2150
2151 void slapd_add_internal(ber_socket_t s, int isactive) {
2152         slapd_add(s, isactive, NULL);
2153 }
2154
2155 Listener ** slapd_get_listeners(void) {
2156         return slap_listeners;
2157 }
2158
2159 void slap_wake_listener()
2160 {
2161         WAKE_LISTENER(1);
2162 }