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