]> git.sur5r.net Git - openldap/blobdiff - servers/slapd/daemon.c
Fix objectSubClassIndexer bug
[openldap] / servers / slapd / daemon.c
index b35c97169dc3661856f3b743a0a7dd7b2ca456e9..f4022fc27c4be7f938cb624a53c4b80159e3138e 100644 (file)
@@ -1,6 +1,6 @@
 /* $OpenLDAP$ */
 /*
- * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
  */
 
 
 #include <ac/ctype.h>
 #include <ac/errno.h>
-#include <ac/signal.h>
 #include <ac/socket.h>
 #include <ac/string.h>
 #include <ac/time.h>
 #include <ac/unistd.h>
 
 #include "ldap_pvt.h"
+#include "ldap_pvt_thread.h"
 #include "lutil.h"
 #include "slap.h"
 
@@ -29,33 +29,19 @@ int deny_severity = LOG_NOTICE;
 
 #ifdef LDAP_PF_LOCAL
 #include <sys/stat.h>
+/* this should go in <ldap.h> as soon as it is accepted */
+#define LDAPI_MOD_URLEXT               "x-mod"
 #endif /* LDAP_PF_LOCAL */
 
-/* globals */
-time_t starttime;
-ber_socket_t dtblsize;
-
-typedef union slap_sockaddr {
-       struct sockaddr sa_addr;
-       struct sockaddr_in sa_in_addr;
 #ifdef LDAP_PF_INET6
-       struct sockaddr_in6 sa_in6_addr;
-#endif
-#ifdef LDAP_PF_LOCAL
-       struct sockaddr_un sa_un_addr;
+int slap_inet4or6 = AF_UNSPEC;
+#else
+int slap_inet4or6 = AF_INET;
 #endif
-} Sockaddr;
 
-typedef struct slap_listener {
-       char* sl_url;
-       char* sl_name;
-#ifdef HAVE_TLS
-       int             sl_is_tls;
-#endif
-       ber_socket_t            sl_sd;
-       Sockaddr sl_sa;
-#define sl_addr        sl_sa.sa_in_addr
-} Listener;
+/* globals */
+time_t starttime;
+ber_socket_t dtblsize;
 
 Listener **slap_listeners = NULL;
 
@@ -72,21 +58,15 @@ static int waking;
 do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0)
 #endif
 
-#ifdef HAVE_NT_SERVICE_MANAGER
-/* in nt_main.c */
-extern ldap_pvt_thread_cond_t                  started_event;
-extern int       is_NT_Service;
-#endif
-
 #ifndef HAVE_WINSOCK
 static
 #endif
-volatile sig_atomic_t slapd_shutdown = 0;
+volatile sig_atomic_t slapd_shutdown = 0, slapd_gentle_shutdown = 0;
 
 static struct slap_daemon {
        ldap_pvt_thread_mutex_t sd_mutex;
 
-       int sd_nactives;
+       ber_socket_t sd_nactives;
 
 #ifndef HAVE_WINSOCK
        /* In winsock, accept() returns values higher than dtblsize
@@ -115,7 +95,7 @@ static SLPHandle slapd_hslp = 0;
 void slapd_slp_init( const char* urls ) {
        int i;
 
-       slapd_srvurls = str2charray( urls, " " );
+       slapd_srvurls = ldap_str2charray( urls, " " );
 
        if( slapd_srvurls == NULL ) return;
 
@@ -127,8 +107,8 @@ void slapd_slp_init( const char* urls ) {
                                slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
                                        strlen( host ) +
                                        sizeof( LDAP_SRVTYPE_PREFIX ) );
-                               strcpy( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX );
-                               strcat( slapd_srvurls[i], host );
+                               strcpy( lutil_strcopy(slapd_srvurls[i],
+                                       LDAP_SRVTYPE_PREFIX ), host );
 
                                ch_free( host );
                        }
@@ -139,8 +119,8 @@ void slapd_slp_init( const char* urls ) {
                                slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
                                        strlen( host ) +
                                        sizeof( LDAPS_SRVTYPE_PREFIX ) );
-                               strcpy( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX );
-                               strcat( slapd_srvurls[i], host );
+                               strcpy( lutil_strcopy(slapd_srvurls[i],
+                                       LDAPS_SRVTYPE_PREFIX ), host );
 
                                ch_free( host );
                        }
@@ -154,7 +134,7 @@ void slapd_slp_init( const char* urls ) {
 void slapd_slp_deinit() {
        if( slapd_srvurls == NULL ) return;
 
-       charray_free( slapd_srvurls );
+       ldap_charray_free( slapd_srvurls );
        slapd_srvurls = NULL;
 
        /* close the SLP handle */
@@ -218,15 +198,16 @@ static void slapd_add(ber_socket_t s) {
        }
 #endif
 
+       slap_daemon.sd_nactives++;
+
        FD_SET( s, &slap_daemon.sd_actives );
        FD_SET( s, &slap_daemon.sd_readers );
 
 #ifdef NEW_LOGGING
-       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
-                  "slapd_add: added %ld%s%s\n",
-                  (long)s,
-                  FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
-                  FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" ));
+       LDAP_LOG( CONNECTION, DETAIL1, 
+               "slapd_add: added %ld%s%s\n", (long)s,
+               FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
+               FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" );
 #else
        Debug( LDAP_DEBUG_CONNS, "daemon: added %ld%s%s\n",
                (long) s,
@@ -242,12 +223,13 @@ static void slapd_add(ber_socket_t s) {
 void slapd_remove(ber_socket_t s, int wake) {
        ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex );
 
+       slap_daemon.sd_nactives--;
+
 #ifdef NEW_LOGGING
-       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
-                  "slapd_remove: removing %ld%s%s\n",
-                  (long) s,
-                  FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
-                  FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : ""  ));
+       LDAP_LOG( CONNECTION, DETAIL1, 
+               "slapd_remove: removing %ld%s%s\n", (long) s,
+               FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
+               FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : ""  );
 #else
        Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n",
                (long) s,
@@ -259,7 +241,7 @@ void slapd_remove(ber_socket_t s, int wake) {
        FD_CLR( s, &slap_daemon.sd_writers );
 
        ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex );
-       WAKE_LISTENER(wake);
+       WAKE_LISTENER(wake || slapd_gentle_shutdown == 2);
 }
 
 void slapd_clr_write(ber_socket_t s, int wake) {
@@ -306,8 +288,7 @@ void slapd_set_read(ber_socket_t s, int wake) {
 
 static void slapd_close(ber_socket_t s) {
 #ifdef NEW_LOGGING
-       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
-                  "slapd_close: closing %ld\n", (long)s ));
+       LDAP_LOG( CONNECTION, DETAIL1, "slapd_close: closing %ld\n", (long)s, 0, 0);
 #else
        Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
                (long) s, 0, 0 );
@@ -330,6 +311,63 @@ static void slap_free_listener_addresses(struct sockaddr **sal)
        ch_free(sal);
 }
 
+#ifdef LDAP_PF_LOCAL
+static int get_url_perms(
+       char    **exts,
+       mode_t  *perms,
+       int     *crit )
+{
+       int     i;
+
+       assert( exts );
+       assert( perms );
+       assert( crit );
+
+       *crit = 0;
+       for ( i = 0; exts[ i ]; i++ ) {
+               char    *type = exts[ i ];
+               int     c = 0;
+
+               if ( type[ 0 ] == '!' ) {
+                       c = 1;
+                       type++;
+               }
+
+               if ( strncasecmp( type, LDAPI_MOD_URLEXT "=", sizeof(LDAPI_MOD_URLEXT "=") - 1 ) == 0 ) {
+                       char    *value = type + sizeof(LDAPI_MOD_URLEXT "=") - 1;
+                       mode_t  p = 0;
+                       int     j;
+
+                       if ( strlen(value) != 3 ) {
+                               return LDAP_OTHER;
+                       } 
+
+                       for ( j = 0; j < 3; j++ ) {
+                               static mode_t   m[ 3 ] 
+                                       = { S_IRWXU, S_IRWXG, S_IRWXO };
+
+                               switch ( value[ j ] ) {
+                               case 'w':
+                                       p |= m[ j ];
+                                       break;
+                               case '-':
+                                       break;
+                               default:
+                                       return LDAP_OTHER;
+                               }
+                       } 
+
+                       *crit = c;
+                       *perms = p;
+
+                       return LDAP_SUCCESS;
+               }
+       }
+
+       return LDAP_OTHER;
+}
+#endif /* LDAP_PF_LOCAL */
+
 /* port = 0 indicates AF_LOCAL */
 static int slap_get_listener_addresses(
        const char *host,
@@ -337,175 +375,170 @@ static int slap_get_listener_addresses(
        struct sockaddr ***sal)
 {
        struct sockaddr **sap;
-#ifdef HAVE_GETADDRINFO
-       struct addrinfo hints, *res, *sai;
-       int n, err;
 
-       memset( &hints, '\0', sizeof(hints) );
-       hints.ai_flags = AI_PASSIVE;
-       hints.ai_socktype = SOCK_STREAM;
-#  ifdef LDAP_PF_LOCAL
+#ifdef LDAP_PF_LOCAL
        if ( port == 0 ) {
-               hints.ai_family = AF_LOCAL;
-               /* host specifies a service in this case */
-               if (err = getaddrinfo(NULL, host, &hints, &res)) {
+               *sal = ch_malloc(2 * sizeof(void *));
+               if (*sal == NULL) {
+                       return -1;
+               }
+
+               sap = *sal;
+               *sap = ch_malloc(sizeof(struct sockaddr_un));
+               if (*sap == NULL)
+                       goto errexit;
+               sap[1] = NULL;
+
+               if ( strlen(host) >
+                    (sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                                  "slap_get_listener_addresses: getaddrinfo failed: %s\n",
-                                  AC_GAI_STRERROR(err) ));
+                       LDAP_LOG( CONNECTION, INFO, 
+                               "slap_get_listener_addresses: domain socket path (%s) "
+                               "too long in URL\n", host, 0, 0 );
 #else
-                       Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
-                               AC_GAI_STRERROR(err), 0, 0);
+                       Debug( LDAP_DEBUG_ANY,
+                              "daemon: domain socket path (%s) too long in URL",
+                              host, 0, 0);
 #endif
-                       return -1;
+                       goto errexit;
                }
+
+               (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
+               (*sap)->sa_family = AF_LOCAL;
+               strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
        } else
-#  endif
+#endif
        {
+#ifdef HAVE_GETADDRINFO
+               struct addrinfo hints, *res, *sai;
+               int n, err;
                char serv[7];
 
+               memset( &hints, '\0', sizeof(hints) );
+               hints.ai_flags = AI_PASSIVE;
+               hints.ai_socktype = SOCK_STREAM;
+               hints.ai_family = slap_inet4or6;
                snprintf(serv, sizeof serv, "%d", port);
-               hints.ai_family = AF_UNSPEC;
-               if (err = getaddrinfo(host, serv, &hints, &res)) {
+
+               if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
+                       LDAP_LOG( CONNECTION, INFO, 
                                   "slap_get_listener_addresses: getaddrinfo failed: %s\n",
-                                  AC_GAI_STRERROR(err) ));
+                                  AC_GAI_STRERROR(err), 0, 0 );
 #else
                        Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
                                AC_GAI_STRERROR(err), 0, 0);
 #endif
                        return -1;
                }
-       }
 
-       sai = res;
-       for (n=2; (sai = sai->ai_next) != NULL; n++) {
-               /* EMPTY */ ;
-       }
-       *sal = ch_malloc(n * sizeof(*sal));
-       if (*sal == NULL) {
-               return -1;
-       }
+               sai = res;
+               for (n=2; (sai = sai->ai_next) != NULL; n++) {
+                       /* EMPTY */ ;
+               }
+               *sal = ch_calloc(n, sizeof(void *));
+               if (*sal == NULL) {
+                       return -1;
+               }
 
-       sai = res;
-       sap = *sal;
-       do {
-               switch (sai->ai_family) {
-#  ifdef LDAP_PF_LOCAL
-               case AF_LOCAL: {
-                       *sap = ch_malloc(sizeof(struct sockaddr_un));
-                       if (*sap == NULL) {
+               sap = *sal;
+               *sap = NULL;
+
+               for ( sai=res; sai; sai=sai->ai_next ) {
+                       if( sai->ai_addr == NULL ) {
+#ifdef NEW_LOGGING
+                               LDAP_LOG( CONNECTION, INFO,
+                                       "slap_get_listener_addresses: "
+                                       "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
+#else
+                               Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
+                                       "getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
+#endif
                                freeaddrinfo(res);
                                goto errexit;
                        }
-                       *(struct sockaddr_un *)*sap =
-                               *((struct sockaddr_un *)sai->ai_addr);
-               } break;
-#  endif
+
+                       switch (sai->ai_family) {
 #  ifdef LDAP_PF_INET6
-               case AF_INET6: {
-                       *sap = ch_malloc(sizeof(struct sockaddr_in6));
-                       if (*sap == NULL) {
-                               freeaddrinfo(res);
-                               goto errexit;
-                       }
-                       *(struct sockaddr_in6 *)*sap =
-                               *((struct sockaddr_in6 *)sai->ai_addr);
-               } break;
+                       case AF_INET6:
+                               *sap = ch_malloc(sizeof(struct sockaddr_in6));
+                               if (*sap == NULL) {
+                                       freeaddrinfo(res);
+                                       goto errexit;
+                               }
+                               *(struct sockaddr_in6 *)*sap =
+                                       *((struct sockaddr_in6 *)sai->ai_addr);
+                               break;
 #  endif
-               case AF_INET: {
-                       *sap = ch_malloc(sizeof(struct sockaddr_in));
-                       if (*sap == NULL) {
-                               freeaddrinfo(res);
-                               goto errexit;
+                       case AF_INET:
+                               *sap = ch_malloc(sizeof(struct sockaddr_in));
+                               if (*sap == NULL) {
+                                       freeaddrinfo(res);
+                                       goto errexit;
+                               }
+                               *(struct sockaddr_in *)*sap =
+                                       *((struct sockaddr_in *)sai->ai_addr);
+                               break;
+                       default:
+                               *sap = NULL;
+                               break;
                        }
-                       *(struct sockaddr_in *)*sap =
-                               *((struct sockaddr_in *)sai->ai_addr);
-               } break;
-               default:
-                       *sap = NULL;
-                       break;
-               }
-               if (*sap != NULL) {
-                       (*sap)->sa_family = sai->ai_family;
-                       sap++;
-               }
-       } while ((sai = sai->ai_next) != NULL);
-
-       freeaddrinfo(res);
 
-#else
-#  ifdef LDAP_PF_LOCAL
-       if ( port == 0 ) {
-               *sal = ch_malloc(2 * sizeof(*sal));
-               if (*sal == NULL) {
-                       return -1;
+                       if (*sap != NULL) {
+                               (*sap)->sa_family = sai->ai_family;
+                               sap++;
+                               *sap = NULL;
+                       }
                }
-               sap = *sal;
-               *sap = ch_malloc(sizeof(struct sockaddr_un));
-               if (*sap == NULL)
-                       goto errexit;
-               (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
-               (*sap)->sa_family = AF_LOCAL;
-               if ( strlen(host) >
-                    (sizeof(((struct sockaddr_un *)*sal)->sun_path) - 1) ) {
-#ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                                  "slap_get_listener_addresses: domain socket path (%s) too long in URL\n",
-                                  host ));
+
+               freeaddrinfo(res);
 #else
-                       Debug( LDAP_DEBUG_ANY,
-                              "daemon: domain socket path (%s) too long in URL",
-                              host, 0, 0);
-#endif
-                       goto errexit;
-               }
-               strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
-       } else
-#  endif
-       {
+               int i, n = 1;
                struct in_addr in;
+               struct hostent *he = NULL;
 
                if ( host == NULL ) {
                        in.s_addr = htonl(INADDR_ANY);
 
                } else if ( !inet_aton( host, &in ) ) {
-                       struct hostent *he = gethostbyname( host );
+                       he = gethostbyname( host );
                        if( he == NULL ) {
 #ifdef NEW_LOGGING
-                               LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                                          "slap_get_listener_addresses: invalid host %s\n",
-                                          host ));
+                               LDAP_LOG( CONNECTION, INFO, 
+                                       "slap_get_listener_addresses: invalid host %s\n", host, 0, 0 );
 #else
                                Debug( LDAP_DEBUG_ANY,
                                       "daemon: invalid host %s", host, 0, 0);
 #endif
                                return -1;
                        }
-                       AC_MEMCPY( &in, he->h_addr, sizeof( in ) );
+                       for (n = 0; he->h_addr_list[n]; n++) ;
                }
 
-               *sal = ch_malloc(2 * sizeof(*sal));
+               *sal = ch_malloc((n+1) * sizeof(void *));
                if (*sal == NULL) {
                        return -1;
                }
 
                sap = *sal;
-               *sap = ch_malloc(sizeof(struct sockaddr_in));
-               if (*sap == NULL) {
-                       goto errexit;
+               for ( i = 0; i<n; i++ ) {
+                       sap[i] = ch_malloc(sizeof(struct sockaddr_in));
+                       if (*sap == NULL) {
+                               goto errexit;
+                       }
+                       (void)memset( (void *)sap[i], '\0', sizeof(struct sockaddr_in) );
+                       sap[i]->sa_family = AF_INET;
+                       ((struct sockaddr_in *)sap[i])->sin_port = htons(port);
+                       if (he) {
+                               AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, he->h_addr_list[i], sizeof(struct in_addr) );
+                       } else {
+                               AC_MEMCPY( &((struct sockaddr_in *)sap[i])->sin_addr, &in, sizeof(struct in_addr) );
+                       }
                }
-
-               (void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_in) );
-               (*sap)->sa_family = AF_INET;
-               ((struct sockaddr_in *)*sap)->sin_port = htons(port);
-               ((struct sockaddr_in *)*sap)->sin_addr = in;
-       }
-       sap++;
+               sap[i] = NULL;
 #endif
+       }
 
-       *sap = NULL;
        return 0;
 
 errexit:
@@ -513,45 +546,53 @@ errexit:
        return -1;
 }
 
-static Listener * slap_open_listener(
-       const char* url )
+static int slap_open_listener(
+       const char* url,
+       int *listeners,
+       int *cur
+       )
 {
-       int     tmp, rc;
+       int     num, tmp, rc;
        Listener l;
        Listener *li;
        LDAPURLDesc *lud;
        unsigned short port;
-       int err, addrlen;
+       int err, addrlen = 0;
        struct sockaddr **sal, **psal;
+       int socktype = SOCK_STREAM;     /* default to COTS */
+
+#ifdef LDAP_PF_LOCAL
+       mode_t  perms = S_IRWXU;
+       int     crit = 1;
+#endif
 
        rc = ldap_url_parse( url, &lud );
 
        if( rc != LDAP_URL_SUCCESS ) {
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                          "slap_open_listener: listen URL \"%s\" parse error %d\n",
-                          url, rc ));
+               LDAP_LOG( CONNECTION, ERR, 
+                       "slap_open_listener: listen URL \"%s\" parse error %d\n",
+                       url, rc , 0 );
 #else
                Debug( LDAP_DEBUG_ANY,
                        "daemon: listen URL \"%s\" parse error=%d\n",
                        url, rc, 0 );
 #endif
-               return NULL;
+               return rc;
        }
 
 #ifndef HAVE_TLS
        if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                          "slap_open_listener: TLS is not supported (%s)\n",
-                          url ));
+               LDAP_LOG( CONNECTION, INFO, 
+                          "slap_open_listener: TLS is not supported (%s)\n", url, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY,
                        "daemon: TLS not supported (%s)\n",
                        url, 0, 0 );
 #endif
                ldap_free_urldesc( lud );
-               return NULL;
+               return -1;
        }
 
        if(! lud->lud_port ) {
@@ -568,27 +609,34 @@ static Listener * slap_open_listener(
 
        port = (unsigned short) lud->lud_port;
 
-       if ( ldap_pvt_url_scheme2proto(lud->lud_scheme) == LDAP_PROTO_IPC ) {
+       tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
+       if ( tmp == LDAP_PROTO_IPC ) {
 #ifdef LDAP_PF_LOCAL
                if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
                        err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
                } else {
                        err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
                }
+
+               if ( lud->lud_exts ) {
+                       err = get_url_perms( lud->lud_exts, &perms, &crit );
+               }
 #else
 
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                          "slap_open_listener: URL scheme is not supported: %s\n",
-                          url ));
+               LDAP_LOG( CONNECTION, INFO, 
+                       "slap_open_listener: URL scheme is not supported: %s\n", url, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
                        url, 0, 0);
 #endif
                ldap_free_urldesc( lud );
-               return NULL;
+               return -1;
 #endif
        } else {
+#ifdef LDAP_CONNECTIONLESS
+               l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
+#endif
                if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
                        || strcmp(lud->lud_host, "*") == 0 )
                {
@@ -600,7 +648,16 @@ static Listener * slap_open_listener(
 
        ldap_free_urldesc( lud );
        if ( err ) {
-               return NULL;
+               return -1;
+       }
+
+       /* If we got more than one address returned, we need to make space
+        * for it in the slap_listeners array.
+        */
+       for ( num=0; sal[num]; num++ );
+       if ( num > 1 ) {
+               *listeners += num-1;
+               slap_listeners = ch_realloc( slap_listeners, (*listeners + 1) * sizeof(Listener *) );
        }
 
        psal = sal;
@@ -618,13 +675,17 @@ static Listener * slap_open_listener(
                        sal++;
                        continue;
                }
-               l.sl_sd = socket( (*sal)->sa_family, SOCK_STREAM, 0);
+#ifdef LDAP_CONNECTIONLESS
+               if (l.sl_is_udp)
+                   socktype = SOCK_DGRAM;
+#endif
+               l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
                if ( l.sl_sd == AC_SOCKET_INVALID ) {
                        int err = sock_errno();
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                                  "slap_open_listener: socket() failed errno=%d (%s)\n",
-                                  err, sock_errstr(err) ));
+                       LDAP_LOG( CONNECTION, ERR, 
+                               "slap_open_listener: socket() failed errno=%d (%s)\n",
+                               err, sock_errstr(err), 0 );
 #else
                        Debug( LDAP_DEBUG_ANY,
                                "daemon: socket() failed errno=%d (%s)\n", err,
@@ -636,9 +697,9 @@ static Listener * slap_open_listener(
 #ifndef HAVE_WINSOCK
                if ( l.sl_sd >= dtblsize ) {
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                                  "slap_open_listener: listener descriptor %ld is too great %ld\n",
-                                  (long)l.sl_sd, (long)dtblsize ));
+                       LDAP_LOG( CONNECTION, ERR, 
+                               "slap_open_listener: listener descriptor %ld is too "
+                               "great %ld\n", (long)l.sl_sd, (long)dtblsize, 0 );
 #else
                        Debug( LDAP_DEBUG_ANY,
                               "daemon: listener descriptor %ld is too great %ld\n",
@@ -663,9 +724,10 @@ static Listener * slap_open_listener(
                        if ( rc == AC_SOCKET_ERROR ) {
                                int err = sock_errno();
 #ifdef NEW_LOGGING
-                               LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                                          "slap_open_listener: setsockopt( %ld, SO_REUSEADDR ) failed errno %d (%s)\n",
-                                          (long)l.sl_sd, err, sock_errstr(err) ));
+                               LDAP_LOG( CONNECTION, INFO, 
+                                       "slap_open_listener: setsockopt( %ld, SO_REUSEADDR ) "
+                                       "failed errno %d (%s)\n", (long)l.sl_sd, err, 
+                                       sock_errstr(err) );
 #else
                                Debug( LDAP_DEBUG_ANY,
                                       "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
@@ -681,6 +743,24 @@ static Listener * slap_open_listener(
                        break;
 #ifdef LDAP_PF_INET6
                case AF_INET6:
+#ifdef IPV6_V6ONLY
+                       /* Try to use IPv6 sockets for IPv6 only */
+                       tmp = 1;
+                       rc = setsockopt( l.sl_sd, IPPROTO_IPV6, IPV6_V6ONLY,
+                                        (char *) &tmp, sizeof(tmp) );
+                       if ( rc == AC_SOCKET_ERROR ) {
+                               int err = sock_errno();
+#ifdef NEW_LOGGING
+                               LDAP_LOG( CONNECTION, INFO,
+                                          "slap_open_listener: setsockopt( %ld, IPV6_V6ONLY ) failed errno %d (%s)\n",
+                                          (long)l.sl_sd, err, sock_errstr(err) );
+#else
+                               Debug( LDAP_DEBUG_ANY,
+                                      "slapd(%ld): setsockopt(IPV6_V6ONLY) failed errno=%d (%s)\n",
+                                      (long) l.sl_sd, err, sock_errstr(err) );
+#endif
+                       }
+#endif
                        addrlen = sizeof(struct sockaddr_in6);
                        break;
 #endif
@@ -691,50 +771,38 @@ static Listener * slap_open_listener(
 #endif
                }
 
-               if (!bind(l.sl_sd, *sal, addrlen))
-                       break;
-               err = sock_errno();
+               if (bind(l.sl_sd, *sal, addrlen)) {
+                       err = sock_errno();
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                          "slap_open_listener: bind(%ld) failed errno=%d (%s)\n",
-                          (long)l.sl_sd, err, sock_errstr(err) ));
+               LDAP_LOG( CONNECTION, INFO, 
+                       "slap_open_listener: bind(%ld) failed errno=%d (%s)\n",
+                       (long)l.sl_sd, err, sock_errstr(err) );
 #else
                Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
                       (long) l.sl_sd, err, sock_errstr(err) );
 #endif
-               tcp_close( l.sl_sd );
-               sal++;
-       } /* while ( *sal != NULL ) */
-
-       if ( *sal == NULL ) {
-#ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                          "slap_open_listener: bind(%ld) failed.\n", (long)l.sl_sd ));
-#else
-               Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed\n",
-                       (long) l.sl_sd, 0, 0 );
-#endif
-               slap_free_listener_addresses(psal);
-               return NULL;
-       }
+                       tcp_close( l.sl_sd );
+                       sal++;
+                       continue;
+               }
 
        switch ( (*sal)->sa_family ) {
 #ifdef LDAP_PF_LOCAL
        case AF_LOCAL: {
                char *addr = ((struct sockaddr_un *)*sal)->sun_path;
-               if ( chmod( addr, S_IRWXU ) < 0 ) {
+               if ( chmod( addr, perms ) < 0 && crit ) {
                        int err = sock_errno();
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                                  "slap_open_listener: fchmod(%ld) failed errno=%d (%s)\n",
-                                  (long)l.sl_sd, err, sock_errstr(err) ));
+                       LDAP_LOG( CONNECTION, INFO, 
+                               "slap_open_listener: fchmod(%ld) failed errno=%d (%s)\n",
+                               (long)l.sl_sd, err, sock_errstr(err) );
 #else
                        Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
                               (long) l.sl_sd, err, sock_errstr(err) );
 #endif
                        tcp_close( l.sl_sd );
                        slap_free_listener_addresses(psal);
-                       return NULL;
+                       return -1;
                }
                l.sl_name = ch_malloc( strlen(addr) + sizeof("PATH=") );
                sprintf( l.sl_name, "PATH=%s", addr );
@@ -743,16 +811,15 @@ static Listener * slap_open_listener(
 
        case AF_INET: {
                char *s;
-#if defined( HAVE_GETADDRINFO ) && defined( INET_NTOP )
+#if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
                char addr[INET_ADDRSTRLEN];
                inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
                           addr, sizeof(addr) );
                s = addr;
-               port = ((struct sockaddr_in *)*sal) ->sin_port;
 #else
-               s = inet_ntoa( l.sl_addr.sin_addr );
-               port = l.sl_addr.sin_port;
+               s = inet_ntoa( ((struct sockaddr_in *) *sal)->sin_addr );
 #endif
+               port = ntohs( ((struct sockaddr_in *)*sal) ->sin_port );
                l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65535") );
                sprintf( l.sl_name, "IP=%s:%d",
                         s != NULL ? s : "unknown" , port );
@@ -763,7 +830,7 @@ static Listener * slap_open_listener(
                char addr[INET6_ADDRSTRLEN];
                inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
                           addr, sizeof addr);
-               port = ((struct sockaddr_in6 *)*sal)->sin6_port;
+               port = ntohs( ((struct sockaddr_in6 *)*sal)->sin6_port );
                l.sl_name = ch_malloc( strlen(addr) + sizeof("IP= 65535") );
                sprintf( l.sl_name, "IP=%s %d", addr, port );
        } break;
@@ -771,9 +838,9 @@ static Listener * slap_open_listener(
 
        default:
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                          "slap_open_listener: unsupported address family (%d)\n",
-                          (int)(*sal)->sa_family ));
+               LDAP_LOG( CONNECTION, INFO, 
+                       "slap_open_listener: unsupported address family (%d)\n",
+                       (int)(*sal)->sa_family, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
                        (int) (*sal)->sa_family, 0, 0 );
@@ -781,20 +848,27 @@ static Listener * slap_open_listener(
                break;
        }
 
-       slap_free_listener_addresses(psal);
-
+       AC_MEMCPY(&l.sl_sa, *sal, addrlen);
        l.sl_url = ch_strdup( url );
        li = ch_malloc( sizeof( Listener ) );
        *li = l;
+       slap_listeners[*cur] = li;
+       (*cur)++;
+       sal++;
+
+       } /* while ( *sal != NULL ) */
+
+       slap_free_listener_addresses(psal);
+
 
 #ifdef NEW_LOGGING
-       LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
-                  "slap_open_listener: daemon initialzed %s\n", l.sl_url ));
+       LDAP_LOG( CONNECTION, RESULTS, 
+                       "slap_open_listener: daemon initialzed %s\n", l.sl_url, 0, 0 );
 #else
        Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
                l.sl_url, 0, 0 );
 #endif
-       return li;
+       return 0;
 }
 
 static int sockinit(void);
@@ -802,13 +876,12 @@ static int sockdestroy(void);
 
 int slapd_daemon_init( const char *urls )
 {
-       int i, rc;
+       int i, j, n, rc;
        char **u;
 
 #ifdef NEW_LOGGING
-       LDAP_LOG(( "connection", LDAP_LEVEL_ARGS,
-                  "slapd_daemon_init: %s\n",
-                  urls ? urls : "<null>" ));
+       LDAP_LOG( CONNECTION, ARGS, 
+               "slapd_daemon_init: %s\n", urls ? urls : "<null>", 0, 0 );
 #else
        Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
                urls ? urls : "<null>", 0, 0 );
@@ -838,8 +911,8 @@ int slapd_daemon_init( const char *urls )
         */
        if( (rc = lutil_pair( wake_sds )) < 0 ) {
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                          "slap_daemon_init: lutil_pair() failed rc=%d\n", rc ));
+               LDAP_LOG( CONNECTION, ERR, 
+                       "slap_daemon_init: lutil_pair() failed rc=%d\n", rc, 0, 0);
 #else
                Debug( LDAP_DEBUG_ANY,
                        "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
@@ -854,12 +927,12 @@ int slapd_daemon_init( const char *urls )
                urls = "ldap:///";
        }
 
-       u = str2charray( urls, " " );
+       u = ldap_str2charray( urls, " " );
 
        if( u == NULL || u[0] == NULL ) {
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                          "slap_daemon_init: no urls (%s) provided.\n", urls ));
+               LDAP_LOG( CONNECTION, ERR, 
+                       "slap_daemon_init: no urls (%s) provided.\n", urls, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
                        urls, 0, 0 );
@@ -869,8 +942,8 @@ int slapd_daemon_init( const char *urls )
 
        for( i=0; u[i] != NULL; i++ ) {
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
-                          "slap_daemon_init: listen on %s\n.", u[i] ));
+               LDAP_LOG( CONNECTION, DETAIL1, 
+                       "slap_daemon_init: listen on %s\n.", u[i], 0, 0 );
 #else
                Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
                        u[i], 0, 0 );
@@ -879,38 +952,36 @@ int slapd_daemon_init( const char *urls )
 
        if( i == 0 ) {
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                          "slap_daemon_init: no listeners to open (%s)\n", urls ));
+               LDAP_LOG( CONNECTION, INFO, 
+                        "slap_daemon_init: no listeners to open (%s)\n", urls, 0, 0 );
 #else
                Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
                        urls, 0, 0 );
 #endif
-               charray_free( u );
+               ldap_charray_free( u );
                return -1;
        }
 
 #ifdef NEW_LOGGING
-       LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                  "slap_daemon_init: %d listeners to open...\n", i ));
+       LDAP_LOG( CONNECTION, INFO, 
+               "slap_daemon_init: %d listeners to open...\n", i, 0, 0 );
 #else
        Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
                i, 0, 0 );
 #endif
        slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
 
-       for(i = 0; u[i] != NULL; i++ ) {
-               slap_listeners[i] = slap_open_listener( u[i] );
-
-               if( slap_listeners[i] == NULL ) {
-                       charray_free( u );
+       for(n = 0, j = 0; u[n]; n++ ) {
+               if ( slap_open_listener( u[n], &i, &j ) ) {
+                       ldap_charray_free( u );
                        return -1;
                }
        }
-       slap_listeners[i] = NULL;
+       slap_listeners[j] = NULL;
 
 #ifdef NEW_LOGGING
-       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
-                  "slap_daemon_init: %d listeners opened\n", i ));
+       LDAP_LOG( CONNECTION, DETAIL1, 
+               "slap_daemon_init: %d listeners opened\n", i, 0, 0 );
 #else
        Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
                i, 0, 0 );
@@ -921,7 +992,7 @@ int slapd_daemon_init( const char *urls )
        slapd_slp_reg();
 #endif
 
-       charray_free( u );
+       ldap_charray_free( u );
        ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex );
        return !i;
 }
@@ -944,25 +1015,104 @@ slapd_daemon_destroy(void)
 }
 
 
+static void
+close_listeners(
+       int remove
+)
+{
+       int l;
+
+       for ( l = 0; slap_listeners[l] != NULL; l++ ) {
+               if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
+                       if ( remove )
+                               slapd_remove( slap_listeners[l]->sl_sd, 0 );
+#ifdef LDAP_PF_LOCAL
+                       if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
+                               unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
+                       }
+#endif /* LDAP_PF_LOCAL */
+                       slapd_close( slap_listeners[l]->sl_sd );
+               }
+               if ( slap_listeners[l]->sl_url )
+                       free ( slap_listeners[l]->sl_url );
+               if ( slap_listeners[l]->sl_name )
+                       free ( slap_listeners[l]->sl_name );
+               free ( slap_listeners[l] );
+               slap_listeners[l] = NULL;
+       }
+}
+
+
 static void *
 slapd_daemon_task(
        void *ptr
 )
 {
        int l;
-       time_t  last_idle_check = slap_get_time();
+       time_t  last_idle_check = 0;
        time( &starttime );
 
+       if ( global_idletimeout > 0 ) {
+               last_idle_check = slap_get_time();
+       }
        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", LDAP_LEVEL_ERR,
-                                  "slapd_daemon_task: listen( %s, 5 ) failed errno=%d (%s)\n",
-                                  slap_listeners[l]->sl_url, err, sock_errstr(err) ));
+                                               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, err, sock_errstr(err) );
 #else
                        Debug( LDAP_DEBUG_ANY,
                                "daemon: listen(%s, 5) failed errno=%d (%s)\n",
@@ -989,9 +1139,10 @@ slapd_daemon_task(
                ber_socket_t nfds;
 #define SLAPD_EBADF_LIMIT 16
                int ebadf = 0;
+               int emfile = 0;
 
 #define SLAPD_IDLE_CHECK_LIMIT 4
-               time_t  now = slap_get_time();
+               time_t  now;
 
 
                fd_set                  readfds;
@@ -999,17 +1150,42 @@ slapd_daemon_task(
                Sockaddr                from;
 
 #if defined(SLAPD_RLOOKUPS)
-       struct hostent          *hp;
+               struct hostent          *hp;
 #endif
                struct timeval          zero;
                struct timeval          *tvp;
 
-               if( global_idletimeout > 0 && difftime(
-                       last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT,
-                       now ) < 0 )
-               {
-                       connections_timeout_idle(now);
+               if( emfile ) {
+                       now = slap_get_time();
+                       connections_timeout_idle( now );
+               }
+               else if ( global_idletimeout > 0 ) {
+                       now = slap_get_time();
+                       if ( difftime( last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) {
+                               connections_timeout_idle( now );
+                       }
+               }
+
+#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 );
@@ -1063,9 +1239,10 @@ slapd_daemon_task(
                                continue;
 
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
-                                  "slapd_daemon_task: select: listen=%d active_threads=%d tvp=%s\n",
-                                  slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "zero" ));
+                       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" : "zero" );
 #else
                        Debug( LDAP_DEBUG_CONNS,
                                "daemon: select: listen=%d active_threads=%d tvp=%s\n",
@@ -1098,15 +1275,15 @@ slapd_daemon_task(
 
                                if( err != EINTR ) {
 #ifdef NEW_LOGGING
-                                       LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                                                  "slapd_daemon_task: select failed (%d): %s\n",
-                                                  err, sock_errstr(err) ));
+                                       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 = -1;
+                                       slapd_shutdown = 2;
                                }
                        }
                        continue;
@@ -1114,13 +1291,13 @@ slapd_daemon_task(
                case 0:         /* timeout - let threads run */
                        ebadf = 0;
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
-                                  "slapd_daemon_task: select timeout - yielding\n" ));
+                       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();
+                       ldap_pvt_thread_yield();
                        continue;
 
                default:        /* something happened - deal with it */
@@ -1128,8 +1305,8 @@ slapd_daemon_task(
 
                        ebadf = 0;
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
-                                  "slapd_daemon_task: activity on %d descriptors\n", ns ));
+                       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 );
@@ -1153,7 +1330,7 @@ slapd_daemon_task(
                        slap_ssf_t ssf = 0;
                        char *authid = NULL;
 
-                       char    *dnsname;
+                       char    *dnsname = NULL;
                        char    *peeraddr;
 #ifdef LDAP_PF_LOCAL
                        char    peername[MAXPATHLEN + sizeof("PATH=")];
@@ -1171,36 +1348,86 @@ slapd_daemon_task(
                        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]->sl_url, "", "",
+                                       slap_listeners[l]->sl_name,
+                                       2, ssf, authid );
+                                   slap_listeners[l]->sl_is_udp++;
+                               }
+                               continue;
+                       }
+#endif
+
                        s = accept( slap_listeners[l]->sl_sd,
                                (struct sockaddr *) &from, &len );
                        if ( s == AC_SOCKET_INVALID ) {
                                int err = sock_errno();
+
+#ifdef EMFILE
+                               if( err == EMFILE ) {
+                                       emfile++;
+                               } else
+#endif
+#ifdef ENFILE
+                               if( err == ENFILE ) {
+                                       emfile++;
+                               } else 
+#endif
+                               {
+                                       emfile=0;
+                               }
+
+                               if( emfile < 3 ) {
 #ifdef NEW_LOGGING
-                               LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                                          "slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
-                                          (long)slap_listeners[l]->sl_sd, err, sock_errstr(err) ));
+                                       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
+                                       Debug( LDAP_DEBUG_ANY,
+                                           "daemon: accept(%ld) failed errno=%d (%s)\n",
+                                           (long) slap_listeners[l]->sl_sd, err,
+                                           sock_errstr(err) );
+#endif
+                               } else {
+                                       /* prevent busy loop */
+#  ifdef HAVE_USLEEP
+                                       if( emfile % 4 == 3 ) usleep( 250 );
+#  else
+                                       if( emfile % 8 == 7 ) sleep( 1 );
+#  endif
+                               }
+
+                               ldap_pvt_thread_yield();
                                continue;
                        }
+                       emfile = 0;
 
 #ifndef HAVE_WINSOCK
                        /* make sure descriptor number isn't too great */
                        if ( s >= dtblsize ) {
-#ifdef NEW_LGGING
-                               LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                                          "slapd_daemon_task: %ld beyond descriptor table size %ld\n",
-                                          (long)s, (long)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
@@ -1232,9 +1459,10 @@ slapd_daemon_task(
                                if ( rc == AC_SOCKET_ERROR ) {
                                        int err = sock_errno();
 #ifdef NEW_LOGGING
-                                       LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                                                  "slapd_daemon_task: setsockopt( %ld, SO_KEEPALIVE) failed errno=%d (%s)\n",
-                                                  (long)s, err, sock_errstr(err) ));
+                                       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 "
@@ -1250,9 +1478,10 @@ slapd_daemon_task(
                                if ( rc == AC_SOCKET_ERROR ) {
                                        int err = sock_errno();
 #ifdef NEW_LOGGING
-                                       LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                                                  "slapd_daemon_task: setsockopt( %ld, TCP_NODELAY) failed errno=%d (%s)\n",
-                                                  (long)s, err, sock_errstr(err) ));
+                                       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 "
@@ -1264,8 +1493,8 @@ slapd_daemon_task(
 #endif
 
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
-                                  "slapd_daemon_task: new connection on %ld\n", (long)s ));
+                       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 );
@@ -1275,6 +1504,7 @@ slapd_daemon_task(
                        case AF_LOCAL:
                                sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path );
                                ssf = LDAP_PVT_SASL_LOCAL_SSF;
+                               dnsname = "local";
                                break;
 #endif /* LDAP_PF_LOCAL */
 
@@ -1288,10 +1518,12 @@ slapd_daemon_task(
                                         (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",
-                                        inet_ntop( AF_INET6,
-                                                   &from.sa_in6_addr.sin6_addr,
-                                                   addr, sizeof addr) ? addr : "unknown",
+                                        peeraddr != NULL ? peeraddr : "unknown",
                                         (unsigned) ntohs( from.sa_in6_addr.sin6_port ) );
                        }
                        break;
@@ -1315,19 +1547,21 @@ slapd_daemon_task(
 #endif
                        ) {
 #ifdef SLAPD_RLOOKUPS
+                               if ( use_reverse_lookup ) {
 #  ifdef LDAP_PF_INET6
-                               if ( from.sa_addr.sa_family == AF_INET6 )
-                                       hp = gethostbyaddr(
-                                               (char *)&(from.sa_in6_addr.sin6_addr),
-                                               sizeof(from.sa_in6_addr.sin6_addr),
-                                               AF_INET6 );
-                               else
+                                       if ( from.sa_addr.sa_family == AF_INET6 )
+                                               hp = gethostbyaddr(
+                                                       (char *)&(from.sa_in6_addr.sin6_addr),
+                                                       sizeof(from.sa_in6_addr.sin6_addr),
+                                                       AF_INET6 );
+                                       else
 #  endif /* LDAP_PF_INET6 */
-                               hp = gethostbyaddr(
-                                       (char *) &(from.sa_in_addr.sin_addr),
-                                       sizeof(from.sa_in_addr.sin_addr),
-                                       AF_INET );
-                               dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
+                                       hp = gethostbyaddr(
+                                               (char *) &(from.sa_in_addr.sin_addr),
+                                               sizeof(from.sa_in_addr.sin_addr),
+                                               AF_INET );
+                                       dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL;
+                               }
 #else
                                dnsname = NULL;
 #endif /* SLAPD_RLOOKUPS */
@@ -1368,9 +1602,9 @@ slapd_daemon_task(
 
                        if( id < 0 ) {
 #ifdef NEW_LOGGING
-                               LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
-                                          "slapd_daemon_task: connection_init(%ld, %s, %s) failed.\n",
-                                          (long)s, peername, slap_listeners[l]->sl_name ));
+                               LDAP_LOG( CONNECTION, INFO, 
+                                       "slapd_daemon_task: connection_init(%ld, %s, %s) failed.\n",
+                                       (long)s, peername, slap_listeners[l]->sl_name );
 #else
                                Debug( LDAP_DEBUG_ANY,
                                        "daemon: connection_init(%ld, %s, %s) failed.\n",
@@ -1395,16 +1629,16 @@ slapd_daemon_task(
 
 #ifdef LDAP_DEBUG
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
-                          "slapd_daemon_task: activity on " ));
+               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", LDAP_LEVEL_DETAIL2,
-                                  " %d%s", readfds.fd_array[i], "r", 0 ));
+                       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 );
@@ -1412,8 +1646,8 @@ slapd_daemon_task(
                }
                for ( i = 0; i < writefds.fd_count; i++ ) {
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
-                                  " %d%s", writefds.fd_array[i], "w" ));
+                       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 );
@@ -1427,6 +1661,13 @@ slapd_daemon_task(
 
                        for ( l = 0; slap_listeners[l] != NULL; l++ ) {
                                if ( i == slap_listeners[l]->sl_sd ) {
+#ifdef LDAP_CONNECTIONLESS
+                               /* The listener is the data port. Don't
+                                * skip it.
+                                */
+                                       if (slap_listeners[l]->sl_is_udp)
+                                               continue;
+#endif
                                        is_listener = 1;
                                        break;
                                }
@@ -1438,9 +1679,8 @@ slapd_daemon_task(
                        w = FD_ISSET( i, &writefds );
                        if ( r || w ) {
 #ifdef NEW_LOGGING
-                               LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
-                                          " %d%s%s", i,
-                                          r ? "r" : "", w ? "w" : "" ));
+                               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" : "" );
@@ -1449,7 +1689,7 @@ slapd_daemon_task(
                }
 #endif
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2, "\n" ));
+               LDAP_LOG( CONNECTION, DETAIL2, "\n", 0, 0, 0 );
 #else
                Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
 #endif
@@ -1476,6 +1716,10 @@ slapd_daemon_task(
 
                        for ( l = 0; slap_listeners[l] != NULL; l++ ) {
                                if ( i == slap_listeners[l]->sl_sd ) {
+#ifdef LDAP_CONNECTIONLESS
+                                       if (slap_listeners[l]->sl_is_udp)
+                                               continue;
+#endif
                                        is_listener = 1;
                                        break;
                                }
@@ -1484,8 +1728,8 @@ slapd_daemon_task(
                                continue;
                        }
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
-                                  "slapd_daemon_task: write active on %d\n", wd ));
+                       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",
@@ -1524,6 +1768,10 @@ slapd_daemon_task(
 
                        for ( l = 0; slap_listeners[l] != NULL; l++ ) {
                                if ( rd == slap_listeners[l]->sl_sd ) {
+#ifdef LDAP_CONNECTIONLESS
+                                       if (slap_listeners[l]->sl_is_udp)
+                                               continue;
+#endif
                                        is_listener = 1;
                                        break;
                                }
@@ -1533,8 +1781,8 @@ slapd_daemon_task(
                        }
 
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
-                                  "slapd_daemon_task: read activity on %d\n", rd ));
+                       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 );
@@ -1553,45 +1801,43 @@ slapd_daemon_task(
                ldap_pvt_thread_yield();
        }
 
-       if( slapd_shutdown > 0 ) {
+       if( slapd_shutdown == 1 ) {
 #ifdef NEW_LOGGING
-               LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
-                          "slapd_daemon_task: shutdown requested and initiated.\n"));
+               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 < 0 ) {
+       } else if ( slapd_shutdown == 2 ) {
 #ifdef HAVE_NT_SERVICE_MANAGER
-               if (slapd_shutdown == -1)
-               {
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
-                                  "slapd_daemon_task: shutdown initiated by Service Manager.\n"));
+                       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
-#endif
-               {
+#else /* !HAVE_NT_SERVICE_MANAGER */
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
-                                  "slapd_daemon_task: abnormal condition, shutdown initiated.\n" ));
+                       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", LDAP_LEVEL_CRIT,
-                          "slapd_daemon_task: no active streams, shutdown initiated.\n" ));
+               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",
@@ -1599,22 +1845,15 @@ slapd_daemon_task(
 #endif
        }
 
-       for ( l = 0; slap_listeners[l] != NULL; l++ ) {
-               if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) {
-#ifdef LDAP_PF_LOCAL
-                       if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) {
-                               unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path );
-                       }
-#endif /* LDAP_PF_LOCAL */
-                       slapd_close( slap_listeners[l]->sl_sd );
-                       break;
-               }
-       }
+       if( slapd_gentle_shutdown != 2 )
+               close_listeners ( 0 );
+       free ( slap_listeners );
+       slap_listeners = NULL;
 
 #ifdef NEW_LOGGING
-       LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
-                  "slapd_daemon_task: shutdown waiting for %d threads to terminate.\n",
-                  ldap_pvt_thread_pool_backload(&connection_pool) ));
+       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",
@@ -1643,17 +1882,18 @@ int slapd_daemon( void )
 
                if ( rc != 0 ) {
 #ifdef NEW_LOGGING
-                       LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
-                                  "slapd_daemon: listener ldap_pvt_thread_create failed (%d).\n", rc ));
+                       LDAP_LOG( CONNECTION, ERR, 
+                               "slapd_daemon: listener ldap_pvt_thread_create failed (%d).\n",
+                               rc, 0, 0 );
 #else
                        Debug( LDAP_DEBUG_ANY,
                        "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
 #endif
                        return rc;
                }
-
-               /* wait for the listener thread to complete */
-               ldap_pvt_thread_join( listener_tid, (void *) NULL );
+               /* wait for the listener thread to complete */
+               ldap_pvt_thread_join( listener_tid, (void *) NULL );
        }
 #else
        /* experimental code */
@@ -1717,8 +1957,8 @@ RETSIGTYPE
 slap_sig_shutdown( int sig )
 {
 #ifdef NEW_LOGGING
-       LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
-                  "slap_sig_shutdown: signal %d\n", sig ));
+       LDAP_LOG( CONNECTION, CRIT, 
+               "slap_sig_shutdown: signal %d\n", sig, 0, 0 );
 #else
        Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
 #endif
@@ -1732,15 +1972,20 @@ slap_sig_shutdown( int sig )
 #if HAVE_NT_SERVICE_MANAGER && SIGBREAK
        if (is_NT_Service && sig == SIGBREAK)
 #ifdef NEW_LOGGING
-           LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
-                      "slap_sig_shutdown: SIGBREAK ignored.\n" ));
+           LDAP_LOG( CONNECTION, CRIT,
+                   "slap_sig_shutdown: SIGBREAK ignored.\n", 0, 0, 0 );
 #else
            Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
                  0, 0, 0);
 #endif
        else
 #endif
-       slapd_shutdown = sig;
+#ifdef SIGHUP
+       if (sig == SIGHUP && global_gentlehup && slapd_gentle_shutdown == 0)
+               slapd_gentle_shutdown = 1;
+       else
+#endif
+       slapd_shutdown = 1;
 
        WAKE_LISTENER(1);
 
@@ -1761,3 +2006,7 @@ slap_sig_wake( int sig )
 void slapd_add_internal(ber_socket_t s) {
        slapd_add(s);
 }
+
+Listener ** slapd_get_listeners(void) {
+       return slap_listeners;
+}