コード例 #1
0
ファイル: ad.c プロジェクト: cptaffe/openldap
int slap_bv2ad(
	struct berval *bv,
	AttributeDescription **ad,
	const char **text )
{
	int rtn = LDAP_UNDEFINED_TYPE;
	AttributeDescription desc, *d2;
	char *name, *options, *optn;
	char *opt, *next;
	int ntags;
	int tagslen;

	/* hardcoded limits for speed */
#define MAX_TAGGING_OPTIONS 128
	struct berval tags[MAX_TAGGING_OPTIONS+1];
#define MAX_TAGS_LEN 1024
	char tagbuf[MAX_TAGS_LEN];

	assert( ad != NULL );
	assert( *ad == NULL ); /* temporary */

	if( bv == NULL || BER_BVISNULL( bv ) || BER_BVISEMPTY( bv ) ) {
		*text = "empty AttributeDescription";
		return rtn;
	}

	/* make sure description is IA5 */
	if( ad_keystring( bv ) ) {
		*text = "AttributeDescription contains inappropriate characters";
		return rtn;
	}

	/* find valid base attribute type; parse in place */
	desc.ad_cname = *bv;
	desc.ad_flags = 0;
	BER_BVZERO( &desc.ad_tags );
	name = bv->bv_val;
	options = ber_bvchr( bv, ';' );
	if ( options != NULL && (unsigned) ( options - name ) < bv->bv_len ) {
		/* don't go past the end of the berval! */
		desc.ad_cname.bv_len = options - name;
	} else {
		options = NULL;
	}
	desc.ad_type = at_bvfind( &desc.ad_cname );
	if( desc.ad_type == NULL ) {
		*text = "attribute type undefined";
		return rtn;
	}

	if( is_at_operational( desc.ad_type ) && options != NULL ) {
		*text = "operational attribute with options undefined";
		return rtn;
	}

	/*
	 * parse options in place
	 */
	ntags = 0;
	tagslen = 0;
	optn = bv->bv_val + bv->bv_len;

	for( opt=options; opt != NULL; opt=next ) {
		int optlen;
		opt++; 
		next = strchrlen( opt, optn, ';', &optlen );

		if( optlen == 0 ) {
			*text = "zero length option is invalid";
			return rtn;
		
		} else if ( optlen == STRLENOF("binary") &&
			strncasecmp( opt, "binary", STRLENOF("binary") ) == 0 )
		{
			/* binary option */
			if( slap_ad_is_binary( &desc ) ) {
				*text = "option \"binary\" specified multiple times";
				return rtn;
			}

			if( !slap_syntax_is_binary( desc.ad_type->sat_syntax )) {
				/* not stored in binary, disallow option */
				*text = "option \"binary\" not supported with type";
				return rtn;
			}

			desc.ad_flags |= SLAP_DESC_BINARY;
			continue;

		} else if ( ad_find_option_definition( opt, optlen ) ) {
			int i;

			if( opt[optlen-1] == '-' ||
				( opt[optlen-1] == '=' && msad_range_hack )) {
				desc.ad_flags |= SLAP_DESC_TAG_RANGE;
			}

			if( ntags >= MAX_TAGGING_OPTIONS ) {
				*text = "too many tagging options";
				return rtn;
			}

			/*
			 * tags should be presented in sorted order,
			 * so run the array in reverse.
			 */
			for( i=ntags-1; i>=0; i-- ) {
				int rc;

				rc = strncasecmp( opt, tags[i].bv_val,
					(unsigned) optlen < tags[i].bv_len
						? (unsigned) optlen : tags[i].bv_len );

				if( rc == 0 && (unsigned)optlen == tags[i].bv_len ) {
					/* duplicate (ignore) */
					ntags--;
					goto done;

				} else if ( rc > 0 ||
					( rc == 0 && (unsigned)optlen > tags[i].bv_len ))
				{
					AC_MEMCPY( &tags[i+2], &tags[i+1],
						(ntags-i-1)*sizeof(struct berval) );
					tags[i+1].bv_val = opt;
					tags[i+1].bv_len = optlen;
					goto done;
				}
			}

			if( ntags ) {
				AC_MEMCPY( &tags[1], &tags[0],
					ntags*sizeof(struct berval) );
			}
			tags[0].bv_val = opt;
			tags[0].bv_len = optlen;

done:;
			tagslen += optlen + 1;
			ntags++;

		} else {
			*text = "unrecognized option";
			return rtn;
		}
	}

	if( ntags > 0 ) {
		int i;

		if( tagslen > MAX_TAGS_LEN ) {
			*text = "tagging options too long";
			return rtn;
		}

		desc.ad_tags.bv_val = tagbuf;
		tagslen = 0;

		for( i=0; i<ntags; i++ ) {
			AC_MEMCPY( &desc.ad_tags.bv_val[tagslen],
				tags[i].bv_val, tags[i].bv_len );

			tagslen += tags[i].bv_len;
			desc.ad_tags.bv_val[tagslen++] = ';';
		}

		desc.ad_tags.bv_val[--tagslen] = '\0';
		desc.ad_tags.bv_len = tagslen;
	}

	/* see if a matching description is already cached */
	for (d2 = desc.ad_type->sat_ad; d2; d2=d2->ad_next) {
		if( d2->ad_flags != desc.ad_flags ) {
			continue;
		}
		if( d2->ad_tags.bv_len != desc.ad_tags.bv_len ) {
			continue;
		}
		if( d2->ad_tags.bv_len == 0 ) {
			break;
		}
		if( strncasecmp( d2->ad_tags.bv_val, desc.ad_tags.bv_val,
			desc.ad_tags.bv_len ) == 0 )
		{
			break;
		}
	}

	/* Not found, add new one */
	while (d2 == NULL) {
		size_t dlen = 0;
		ldap_pvt_thread_mutex_lock( &desc.ad_type->sat_ad_mutex );
		/* check again now that we've locked */
		for (d2 = desc.ad_type->sat_ad; d2; d2=d2->ad_next) {
			if (d2->ad_flags != desc.ad_flags)
				continue;
			if (d2->ad_tags.bv_len != desc.ad_tags.bv_len)
				continue;
			if (d2->ad_tags.bv_len == 0)
				break;
			if (strncasecmp(d2->ad_tags.bv_val, desc.ad_tags.bv_val,
				desc.ad_tags.bv_len) == 0)
				break;
		}
		if (d2) {
			ldap_pvt_thread_mutex_unlock( &desc.ad_type->sat_ad_mutex );
			break;
		}

		/* Allocate a single contiguous block. If there are no
		 * options, we just need space for the AttrDesc structure.
		 * Otherwise, we need to tack on the full name length +
		 * options length, + maybe tagging options length again.
		 */
		if (desc.ad_tags.bv_len || desc.ad_flags != SLAP_DESC_NONE) {
			dlen = desc.ad_type->sat_cname.bv_len + 1;
			if (desc.ad_tags.bv_len) {
				dlen += 1 + desc.ad_tags.bv_len;
			}
			if ( slap_ad_is_binary( &desc ) ) {
				dlen += 1 + STRLENOF(";binary") + desc.ad_tags.bv_len;
			}
		}

		d2 = ch_malloc(sizeof(AttributeDescription) + dlen);
		d2->ad_next = NULL;
		d2->ad_type = desc.ad_type;
		d2->ad_flags = desc.ad_flags;
		d2->ad_cname.bv_len = desc.ad_type->sat_cname.bv_len;
		d2->ad_tags.bv_len = desc.ad_tags.bv_len;
		ldap_pvt_thread_mutex_lock( &ad_index_mutex );
		d2->ad_index = ++ad_count;
		ldap_pvt_thread_mutex_unlock( &ad_index_mutex );

		if (dlen == 0) {
			d2->ad_cname.bv_val = d2->ad_type->sat_cname.bv_val;
			d2->ad_tags.bv_val = NULL;
		} else {
			char *cp, *op, *lp;
			int j;
			d2->ad_cname.bv_val = (char *)(d2+1);
			strcpy(d2->ad_cname.bv_val, d2->ad_type->sat_cname.bv_val);
			cp = d2->ad_cname.bv_val + d2->ad_cname.bv_len;
			if( slap_ad_is_binary( &desc ) ) {
				op = cp;
				lp = NULL;
				if( desc.ad_tags.bv_len ) {
					lp = desc.ad_tags.bv_val;
					while( strncasecmp(lp, "binary", STRLENOF("binary")) < 0
					       && (lp = strchr( lp, ';' )) != NULL )
						++lp;
					if( lp != desc.ad_tags.bv_val ) {
						*cp++ = ';';
						j = (lp
						     ? (unsigned) (lp - desc.ad_tags.bv_val - 1)
						     : strlen( desc.ad_tags.bv_val ));
						cp = lutil_strncopy(cp, desc.ad_tags.bv_val, j);
					}
				}
				cp = lutil_strcopy(cp, ";binary");
				if( lp != NULL ) {
					*cp++ = ';';
					cp = lutil_strcopy(cp, lp);
				}
				d2->ad_cname.bv_len = cp - d2->ad_cname.bv_val;
				if( desc.ad_tags.bv_len )
					ldap_pvt_str2lower(op);
				j = 1;
			} else {
				j = 0;
			}
			if( desc.ad_tags.bv_len ) {
				lp = d2->ad_cname.bv_val + d2->ad_cname.bv_len + j;
				if ( j == 0 )
					*lp++ = ';';
				d2->ad_tags.bv_val = lp;
				strcpy(lp, desc.ad_tags.bv_val);
				ldap_pvt_str2lower(lp);
				if( j == 0 )
					d2->ad_cname.bv_len += 1 + desc.ad_tags.bv_len;
			}
		}
		/* Add new desc to list. We always want the bare Desc with
		 * no options to stay at the head of the list, assuming
		 * that one will be used most frequently.
		 */
		if (desc.ad_type->sat_ad == NULL || dlen == 0) {
			d2->ad_next = desc.ad_type->sat_ad;
			desc.ad_type->sat_ad = d2;
		} else {
			d2->ad_next = desc.ad_type->sat_ad->ad_next;
			desc.ad_type->sat_ad->ad_next = d2;
		}
		ldap_pvt_thread_mutex_unlock( &desc.ad_type->sat_ad_mutex );
	}

	if( *ad == NULL ) {
		*ad = d2;
	} else {
		**ad = *d2;
	}

	return LDAP_SUCCESS;
}
コード例 #2
0
ファイル: daemon.c プロジェクト: BackupTheBerlios/wl530g-svn
static void *
slapd_daemon_task(
	void *ptr
)
{
	int l;
	time_t	last_idle_check = 0;
	struct timeval idle;
	time( &starttime );

#define SLAPD_IDLE_CHECK_LIMIT 4

	if ( global_idletimeout > 0 ) {
		last_idle_check = slap_get_time();
		/* Set the select timeout.
		 * Don't just truncate, preserve the fractions of
		 * seconds to prevent sleeping for zero time.
		 */
		idle.tv_sec = global_idletimeout/SLAPD_IDLE_CHECK_LIMIT;
		idle.tv_usec = global_idletimeout - idle.tv_sec * SLAPD_IDLE_CHECK_LIMIT;
		idle.tv_usec *= 1000000 / SLAPD_IDLE_CHECK_LIMIT;
	} else {
		idle.tv_sec = 0;
		idle.tv_usec = 0;
	}

	for ( l = 0; slap_listeners[l] != NULL; l++ ) {
		if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
			continue;
#ifdef LDAP_CONNECTIONLESS
		/* Since this is connectionless, the data port is the
		 * listening port. The listen() and accept() calls
		 * are unnecessary.
		 */
		if ( slap_listeners[l]->sl_is_udp ) {
			slapd_add( slap_listeners[l]->sl_sd );
			continue;
		}
#endif

		if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
			int err = sock_errno();

#ifdef LDAP_PF_INET6
			/* If error is EADDRINUSE, we are trying to listen to INADDR_ANY and
			 * we are already listening to in6addr_any, then we want to ignore
			 * this and continue.
			 */
			if ( err == EADDRINUSE ) {
				int i;
				struct sockaddr_in sa = slap_listeners[l]->sl_sa.sa_in_addr;
				struct sockaddr_in6 sa6;
				
				if ( sa.sin_family == AF_INET &&
				     sa.sin_addr.s_addr == htonl(INADDR_ANY) ) {
					for ( i = 0 ; i < l; i++ ) {
						sa6 = slap_listeners[i]->sl_sa.sa_in6_addr;
						if ( sa6.sin6_family == AF_INET6 &&
						     !memcmp( &sa6.sin6_addr, &in6addr_any, sizeof(struct in6_addr) ) )
							break;
					}

					if ( i < l ) {
						/* We are already listening to in6addr_any */
#ifdef NEW_LOGGING
						LDAP_LOG(CONNECTION, WARNING,
							   "slapd_daemon_task: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n", 0, 0, 0 );
#else
						Debug( LDAP_DEBUG_CONNS,
						       "daemon: Attempt to listen to 0.0.0.0 failed, already listening on ::, assuming IPv4 included\n",
						       0, 0, 0 );
#endif
						slapd_close( slap_listeners[l]->sl_sd );
						slap_listeners[l]->sl_sd = AC_SOCKET_INVALID;
						continue;
					}
				}
			}
#endif				
#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, ERR, 
				"slapd_daemon_task: listen( %s, 5 ) failed errno=%d (%s)\n",
				slap_listeners[l]->sl_url.bv_val, err, sock_errstr(err) );
#else
			Debug( LDAP_DEBUG_ANY,
				"daemon: listen(%s, 5) failed errno=%d (%s)\n",
					slap_listeners[l]->sl_url.bv_val, err,
					sock_errstr(err) );
#endif
			return( (void*)-1 );
		}

		slapd_add( slap_listeners[l]->sl_sd );
	}

#ifdef HAVE_NT_SERVICE_MANAGER
	if ( started_event != NULL ) {
		ldap_pvt_thread_cond_signal( &started_event );
	}
#endif
	/* initialization complete. Here comes the loop. */

	while ( !slapd_shutdown ) {
		ber_socket_t i;
		int ns;
		int at;
		ber_socket_t nfds;
#define SLAPD_EBADF_LIMIT 16
		int ebadf = 0;

		time_t	now;

		fd_set			readfds;
		fd_set			writefds;
		Sockaddr		from;

		struct timeval		tv;
		struct timeval		*tvp;

		now = slap_get_time();

		if( ( global_idletimeout > 0 ) &&
			difftime( last_idle_check +
			global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
			connections_timeout_idle( now );
			last_idle_check = now;
		}
		tv = idle;

#ifdef SIGHUP
		if( slapd_gentle_shutdown ) {
			ber_socket_t active;

			if( slapd_gentle_shutdown == 1 ) {
				Debug( LDAP_DEBUG_ANY, "slapd gentle shutdown\n", 0, 0, 0 );
				close_listeners( 1 );
				global_restrictops |= SLAP_RESTRICT_OP_WRITES;
				slapd_gentle_shutdown = 2;
			}

			ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
			active = slap_daemon.sd_nactives;
			ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
			if( active == 0 ) {
				slapd_shutdown = 2;
				break;
			}
		}
#endif

		FD_ZERO( &writefds );
		FD_ZERO( &readfds );

		at = 0;

		ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );

#ifdef FD_SET_MANUAL_COPY
		for( s = 0; s < nfds; s++ ) {
			if(FD_ISSET( &slap_sd_readers, s )) {
				FD_SET( s, &readfds );
			}
			if(FD_ISSET( &slap_sd_writers, s )) {
				FD_SET( s, &writefds );
			}
		}
#else
		AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) );
		AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) );
#endif
		assert(!FD_ISSET(wake_sds[0], &readfds));
		FD_SET( wake_sds[0], &readfds );

		for ( l = 0; slap_listeners[l] != NULL; l++ ) {
			if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
				continue;
			if ( slap_listeners[l]->sl_is_mute )
				FD_CLR( slap_listeners[l]->sl_sd, &readfds );
			else
			if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds))
			    FD_SET( slap_listeners[l]->sl_sd, &readfds );
		}

#ifndef HAVE_WINSOCK
		nfds = slap_daemon.sd_nfds;
#else
		nfds = dtblsize;
#endif
		if ( global_idletimeout && slap_daemon.sd_nactives )
			at = 1;

		ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );

		if ( !at )
			at = ldap_pvt_thread_pool_backload(&connection_pool);

#if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
		tvp = NULL;
#else
		tvp = at ? &tv : NULL;
#endif

		for ( l = 0; slap_listeners[l] != NULL; l++ ) {
			if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ||
			    slap_listeners[l]->sl_is_mute )
				continue;

#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, DETAIL1, 
				"slapd_daemon_task: select: listen=%d "
				"active_threads=%d tvp=%s\n",
				slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "idle" );
#else
			Debug( LDAP_DEBUG_CONNS,
				"daemon: select: listen=%d active_threads=%d tvp=%s\n",
					slap_listeners[l]->sl_sd, at,
					tvp == NULL ? "NULL" : "idle" );
#endif
		}

		switch(ns = select( nfds, &readfds,
#ifdef HAVE_WINSOCK
			/* don't pass empty fd_set */
			( writefds.fd_count > 0 ? &writefds : NULL ),
#else
			&writefds,
#endif
			NULL, tvp ))
		{
		case -1: {	/* failure - try again */
				int err = sock_errno();

				if( err == EBADF
#ifdef WSAENOTSOCK
					/* you'd think this would be EBADF */
					|| err == WSAENOTSOCK
#endif
				) {
					if (++ebadf < SLAPD_EBADF_LIMIT)
						continue;
				}

				if( err != EINTR ) {
#ifdef NEW_LOGGING
					LDAP_LOG( CONNECTION, INFO, 
						"slapd_daemon_task: select failed (%d): %s\n",
						err, sock_errstr(err), 0 );
#else
					Debug( LDAP_DEBUG_CONNS,
						"daemon: select failed (%d): %s\n",
						err, sock_errstr(err), 0 );
#endif
					slapd_shutdown = 2;
				}
			}
			continue;

		case 0:		/* timeout - let threads run */
			ebadf = 0;
#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, DETAIL2,
				   "slapd_daemon_task: select timeout - yielding\n", 0, 0, 0 );
#else
			Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
			    0, 0, 0 );
#endif
			ldap_pvt_thread_yield();
			continue;

		default:	/* something happened - deal with it */
			if( slapd_shutdown ) continue;

			ebadf = 0;
#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, DETAIL2, 
				   "slapd_daemon_task: activity on %d descriptors\n", ns, 0, 0 );
#else
			Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
				ns, 0, 0 );
#endif
			/* FALL THRU */
		}

		if( FD_ISSET( wake_sds[0], &readfds ) ) {
			char c[BUFSIZ];
			tcp_read( wake_sds[0], c, sizeof(c) );
#if defined(NO_THREADS) || defined(HAVE_GNU_PTH)
			waking = 0;
#endif
			continue;
		}

		for ( l = 0; slap_listeners[l] != NULL; l++ ) {
			ber_socket_t s;
			socklen_t len = sizeof(from);
			long id;
			slap_ssf_t ssf = 0;
			char *authid = NULL;
#ifdef SLAPD_RLOOKUPS
			char hbuf[NI_MAXHOST];
#endif

			char	*dnsname = NULL;
			char	*peeraddr = NULL;
#ifdef LDAP_PF_LOCAL
			char	peername[MAXPATHLEN + sizeof("PATH=")];
#elif defined(LDAP_PF_INET6)
			char	peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")];
#else
			char	peername[sizeof("IP=255.255.255.255:65336")];
#endif /* LDAP_PF_LOCAL */

			peername[0] = '\0';

			if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
				continue;

			if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) )
				continue;

#ifdef LDAP_CONNECTIONLESS
			if ( slap_listeners[l]->sl_is_udp ) {
				/* The first time we receive a query, we set this
				 * up as a "connection". It remains open for the life
				 * of the slapd.
				 */
				if ( slap_listeners[l]->sl_is_udp < 2 ) {
				    id = connection_init(
					slap_listeners[l]->sl_sd,
				    	slap_listeners[l], "", "",
					2, ssf, authid );
				    slap_listeners[l]->sl_is_udp++;
				}
				continue;
			}
#endif

			/* Don't need to look at this in the data loops */
			FD_CLR( slap_listeners[l]->sl_sd, &readfds );
			FD_CLR( slap_listeners[l]->sl_sd, &writefds );

			s = accept( slap_listeners[l]->sl_sd,
				(struct sockaddr *) &from, &len );
			if ( s == AC_SOCKET_INVALID ) {
				int err = sock_errno();

				if(
#ifdef EMFILE
				    err == EMFILE ||
#endif
#ifdef ENFILE
				    err == ENFILE ||
#endif
				    0 )
				{
					ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
					emfile++;
					/* Stop listening until an existing session closes */
					slap_listeners[l]->sl_is_mute = 1;
					ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
				}

#ifdef NEW_LOGGING
				LDAP_LOG( CONNECTION, ERR, 
					"slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
					(long)slap_listeners[l]->sl_sd, 
					err, sock_errstr(err) );
#else
				Debug( LDAP_DEBUG_ANY,
					"daemon: accept(%ld) failed errno=%d (%s)\n",
					(long) slap_listeners[l]->sl_sd, err,
					sock_errstr(err) );
#endif
				ldap_pvt_thread_yield();
				continue;
			}

#ifndef HAVE_WINSOCK
			/* make sure descriptor number isn't too great */
			if ( s >= dtblsize ) {
#ifdef NEW_LOGGING
				LDAP_LOG( CONNECTION, ERR, 
				   "slapd_daemon_task: %ld beyond descriptor table size %ld\n",
				   (long)s, (long)dtblsize, 0 );
#else
				Debug( LDAP_DEBUG_ANY,
					"daemon: %ld beyond descriptor table size %ld\n",
					(long) s, (long) dtblsize, 0 );
#endif

				slapd_close(s);
				ldap_pvt_thread_yield();
				continue;
			}
#endif

#ifdef LDAP_DEBUG
			ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );

			/* newly accepted stream should not be in any of the FD SETS */
			assert( !FD_ISSET( s, &slap_daemon.sd_actives) );
			assert( !FD_ISSET( s, &slap_daemon.sd_readers) );
			assert( !FD_ISSET( s, &slap_daemon.sd_writers) );

			ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
#endif

#if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
#ifdef LDAP_PF_LOCAL
			/* for IPv4 and IPv6 sockets only */
			if ( from.sa_addr.sa_family != AF_LOCAL )
#endif /* LDAP_PF_LOCAL */
			{
				int rc;
				int tmp;
#ifdef SO_KEEPALIVE
				/* enable keep alives */
				tmp = 1;
				rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
					(char *) &tmp, sizeof(tmp) );
				if ( rc == AC_SOCKET_ERROR ) {
					int err = sock_errno();
#ifdef NEW_LOGGING
					LDAP_LOG( CONNECTION, ERR, 
						"slapd_daemon_task: setsockopt( %ld, SO_KEEPALIVE)"
					   " failed errno=%d (%s)\n",
						(long)s, err, sock_errstr(err) );
#else
					Debug( LDAP_DEBUG_ANY,
						"slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
						"errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
#endif
				}
#endif
#ifdef TCP_NODELAY
				/* enable no delay */
				tmp = 1;
				rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
					(char *)&tmp, sizeof(tmp) );
				if ( rc == AC_SOCKET_ERROR ) {
					int err = sock_errno();
#ifdef NEW_LOGGING
					LDAP_LOG( CONNECTION, ERR, 
						"slapd_daemon_task: setsockopt( %ld, "
						"TCP_NODELAY) failed errno=%d (%s)\n",
						(long)s, err, sock_errstr(err) );
#else
					Debug( LDAP_DEBUG_ANY,
						"slapd(%ld): setsockopt(TCP_NODELAY) failed "
						"errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
#endif
				}
#endif
			}
#endif

#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, DETAIL1, 
				"slapd_daemon_task: new connection on %ld\n", (long)s, 0, 0 );
#else
			Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
				(long) s, 0, 0 );
#endif
			switch ( from.sa_addr.sa_family ) {
#  ifdef LDAP_PF_LOCAL
			case AF_LOCAL:
				sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
				ssf = LDAP_PVT_SASL_LOCAL_SSF;
				{
					uid_t uid;
					gid_t gid;

					if( getpeereid( s, &uid, &gid ) == 0 ) {
						authid = ch_malloc(
							sizeof("uidnumber=4294967295+gidnumber=4294967295,"
								"cn=peercred,cn=external,cn=auth"));
						sprintf(authid, "uidnumber=%d+gidnumber=%d,"
							"cn=peercred,cn=external,cn=auth",
							(int) uid, (int) gid);
					}
				}
				dnsname = "local";
				break;
#endif /* LDAP_PF_LOCAL */

#  ifdef LDAP_PF_INET6
			case AF_INET6:
			if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) {
				peeraddr = inet_ntoa( *((struct in_addr *)
							&from.sa_in6_addr.sin6_addr.s6_addr[12]) );
				sprintf( peername, "IP=%s:%d",
					 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
					 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
			} else {
				char addr[INET6_ADDRSTRLEN];

				peeraddr = (char *) inet_ntop( AF_INET6,
						      &from.sa_in6_addr.sin6_addr,
						      addr, sizeof addr );
				sprintf( peername, "IP=%s %d",
					 peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
					 (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
			}
			break;
#  endif /* LDAP_PF_INET6 */

			case AF_INET:
			peeraddr = inet_ntoa( from.sa_in_addr.sin_addr );
			sprintf( peername, "IP=%s:%d",
				peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
				(unsigned) ntohs( from.sa_in_addr.sin_port ) );
				break;

			default:
				slapd_close(s);
				continue;
			}

			if ( ( from.sa_addr.sa_family == AF_INET )
#ifdef LDAP_PF_INET6
				|| ( from.sa_addr.sa_family == AF_INET6 )
#endif
			) {
#ifdef SLAPD_RLOOKUPS
				if ( use_reverse_lookup ) {
					char *herr;
					if (ldap_pvt_get_hname( (const struct sockaddr *)&from, len, hbuf,
						sizeof(hbuf), &herr ) == 0) {
						ldap_pvt_str2lower( hbuf );
						dnsname = hbuf;
					}
				}
#else
				dnsname = NULL;
#endif /* SLAPD_RLOOKUPS */

#ifdef HAVE_TCPD
				if ( !hosts_ctl("slapd",
						dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
						peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
						SLAP_STRING_UNKNOWN ))
				{
					/* DENY ACCESS */
					Statslog( LDAP_DEBUG_STATS,
						"fd=%ld DENIED from %s (%s)\n",
						(long) s,
						dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
						peeraddr != NULL ? peeraddr : SLAP_STRING_UNKNOWN,
						0, 0 );
					slapd_close(s);
					continue;
				}
#endif /* HAVE_TCPD */
			}

			id = connection_init(s,
				slap_listeners[l],
				dnsname != NULL ? dnsname : SLAP_STRING_UNKNOWN,
				peername,
#ifdef HAVE_TLS
				slap_listeners[l]->sl_is_tls,
#else
				0,
#endif
				ssf,
				authid );

			if( authid ) ch_free(authid);

			if( id < 0 ) {
#ifdef NEW_LOGGING
				LDAP_LOG( CONNECTION, INFO, 
					"slapd_daemon_task: "
					"connection_init(%ld, %s, %s) "
					"failed.\n",
					(long)s, peername, 
					slap_listeners[l]->sl_name.bv_val );
#else
				Debug( LDAP_DEBUG_ANY,
					"daemon: connection_init(%ld, %s, %s) "
					"failed.\n",
					(long) s,
					peername,
					slap_listeners[l]->sl_name.bv_val );
#endif
				slapd_close(s);
				continue;
			}

			Statslog( LDAP_DEBUG_STATS,
				"conn=%ld fd=%ld ACCEPT from %s (%s)\n",
				id, (long) s,
				peername,
				slap_listeners[l]->sl_name.bv_val,
				0 );

			slapd_add( s );
			continue;
		}

#ifdef LDAP_DEBUG
#ifdef NEW_LOGGING
		LDAP_LOG( CONNECTION, DETAIL2,
			   "slapd_daemon_task: activity on ", 0, 0, 0 );
#else
		Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
#endif
#ifdef HAVE_WINSOCK
		for ( i = 0; i < readfds.fd_count; i++ ) {
#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, DETAIL2, 
				" %d%s", readfds.fd_array[i], "r", 0, 0 );
#else
			Debug( LDAP_DEBUG_CONNS, " %d%s",
				readfds.fd_array[i], "r", 0 );
#endif
		}
		for ( i = 0; i < writefds.fd_count; i++ ) {
#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, DETAIL2, 
				" %d%s", writefds.fd_array[i], "w" , 0 );
#else
			Debug( LDAP_DEBUG_CONNS, " %d%s",
				writefds.fd_array[i], "w", 0 );
#endif
		}

#else
		for ( i = 0; i < nfds; i++ ) {
			int	r, w;

			r = FD_ISSET( i, &readfds );
			w = FD_ISSET( i, &writefds );
			if ( r || w ) {
#ifdef NEW_LOGGING
				LDAP_LOG( CONNECTION, DETAIL2, 
					" %d%s%s", i, r ? "r" : "", w ? "w" : "" );
#else
				Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
				    r ? "r" : "", w ? "w" : "" );
#endif
			}
		}
#endif
#ifdef NEW_LOGGING
		LDAP_LOG( CONNECTION, DETAIL2, "\n", 0, 0, 0 );
#else
		Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
#endif

#endif

		/* loop through the writers */
#ifdef HAVE_WINSOCK
		for ( i = 0; i < writefds.fd_count; i++ )
#else
		for ( i = 0; i < nfds; i++ )
#endif
		{
			ber_socket_t wd;
#ifdef HAVE_WINSOCK
			wd = writefds.fd_array[i];
#else
			if( ! FD_ISSET( i, &writefds ) ) {
				continue;
			}
			wd = i;
#endif

#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, DETAIL2, 
				"slapd_daemon_task: write active on %d\n", wd, 0, 0 );
#else
			Debug( LDAP_DEBUG_CONNS,
				"daemon: write active on %d\n",
				wd, 0, 0 );
#endif
			/*
			 * NOTE: it is possible that the connection was closed
			 * and that the stream is now inactive.
			 * connection_write() must valid the stream is still
			 * active.
			 */

			if ( connection_write( wd ) < 0 ) {
				FD_CLR( (unsigned) wd, &readfds );
				slapd_close( wd );
			}
		}

#ifdef HAVE_WINSOCK
		for ( i = 0; i < readfds.fd_count; i++ )
#else
		for ( i = 0; i < nfds; i++ )
#endif
		{
			ber_socket_t rd;
#ifdef HAVE_WINSOCK
			rd = readfds.fd_array[i];
#else
			if( ! FD_ISSET( i, &readfds ) ) {
				continue;
			}
			rd = i;
#endif

#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, DETAIL2, 
				"slapd_daemon_task: read activity on %d\n", rd, 0, 0 );
#else
			Debug ( LDAP_DEBUG_CONNS,
				"daemon: read activity on %d\n", rd, 0, 0 );
#endif
			/*
			 * NOTE: it is possible that the connection was closed
			 * and that the stream is now inactive.
			 * connection_read() must valid the stream is still
			 * active.
			 */

			if ( connection_read( rd ) < 0 ) {
				slapd_close( rd );
			}
		}
		ldap_pvt_thread_yield();
	}

	if( slapd_shutdown == 1 ) {
#ifdef NEW_LOGGING
		LDAP_LOG( CONNECTION, CRIT,
		   "slapd_daemon_task: shutdown requested and initiated.\n", 0, 0, 0 );
#else
		Debug( LDAP_DEBUG_TRACE,
			"daemon: shutdown requested and initiated.\n",
			0, 0, 0 );
#endif

	} else if ( slapd_shutdown == 2 ) {
#ifdef HAVE_NT_SERVICE_MANAGER
#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, CRIT,
			   "slapd_daemon_task: shutdown initiated by Service Manager.\n",
			   0, 0, 0);
#else
			Debug( LDAP_DEBUG_TRACE,
			       "daemon: shutdown initiated by Service Manager.\n",
			       0, 0, 0);
#endif
#else /* !HAVE_NT_SERVICE_MANAGER */
#ifdef NEW_LOGGING
			LDAP_LOG( CONNECTION, CRIT,
			   "slapd_daemon_task: abnormal condition, "
			   "shutdown initiated.\n", 0, 0, 0 );
#else
			Debug( LDAP_DEBUG_TRACE,
			       "daemon: abnormal condition, shutdown initiated.\n",
			       0, 0, 0 );
#endif
#endif /* !HAVE_NT_SERVICE_MANAGER */
	} else {
#ifdef NEW_LOGGING
		LDAP_LOG( CONNECTION, CRIT,
		   "slapd_daemon_task: no active streams, shutdown initiated.\n", 
		   0, 0, 0 );
#else
		Debug( LDAP_DEBUG_TRACE,
		       "daemon: no active streams, shutdown initiated.\n",
		       0, 0, 0 );
#endif
	}

	if( slapd_gentle_shutdown != 2 ) {
		close_listeners ( 0 );
	}

	free ( slap_listeners );
	slap_listeners = NULL;

	if( !slapd_gentle_shutdown ) {
		connections_shutdown();
	}

#ifdef NEW_LOGGING
	LDAP_LOG( CONNECTION, CRIT, 
		"slapd_daemon_task: shutdown waiting for %d threads to terminate.\n",
		ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
#else
	Debug( LDAP_DEBUG_ANY,
	    "slapd shutdown: waiting for %d threads to terminate\n",
	    ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
#endif
	ldap_pvt_thread_pool_destroy(&connection_pool, 1);

	return NULL;
}