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