Tweak field width in cache dump to avoid truncating IPv6 addresses.

This should solve problems people are seeing when a file changes
twice within a second and thus is missed for polling.

CHANGELOG

@@ -1,3 +1,26 @@
+version 2.73
+            Fix crash at startup when an empty suffix is supplied to
+	    --conf-dir, also trivial memory leak. Thanks to 
+	    Tomas Hozza for spotting this.
+
+	    Remove floor of 4096 on advertised EDNS0 packet size when 
+	    DNSSEC in use, the original rationale for this has long gone.
+	    Thanks to Anders Kaseorg for spotting this.
+
+	    Use inotify for checking on updates to /etc/resolv.conf and
+	    friends under Linux. This fixes race conditions when the files are 
+	    updated rapidly and saves CPU by noy polling.
+
+	    Fix breakage of --domain=<domain>,<subnet>,local - only reverse
+	    queries were intercepted. THis appears to have been broken 
+	    since 2.69. Thanks to Josh Stone for finding the bug.
+
+	    Eliminate IPv6 privacy addresses and deprecated addresses from
+	    the answers given by --interface-name. Note that reverse queries
+	    (ie looking for names, given addresses) are not affected. 
+	    Thanks to Michael Gorbach for the suggestion.
+	
+
 version 2.72
             Add ra-advrouter mode, for RFC-3775 mobile IPv6 support.
 

Makefile

@@ -69,7 +69,7 @@ objs = cache.o rfc1035.o util.o option.o forward.o network.o \
        dnsmasq.o dhcp.o lease.o rfc2131.o netlink.o dbus.o bpf.o \
        helper.o tftp.o log.o conntrack.o dhcp6.o rfc3315.o \
        dhcp-common.o outpacket.o radv.o slaac.o auth.o ipset.o \
-       domain.o dnssec.o blockdata.o tables.o loop.o
+       domain.o dnssec.o blockdata.o tables.o loop.o inotify.o
 
 hdrs = dnsmasq.h config.h dhcp-protocol.h dhcp6-protocol.h \
        dns-protocol.h radv-protocol.h ip6addr.h

bld/Android.mk

@@ -10,7 +10,7 @@ LOCAL_SRC_FILES :=  bpf.c cache.c dbus.c dhcp.c dnsmasq.c \
 		    dhcp6.c rfc3315.c dhcp-common.c outpacket.c \
 		    radv.c slaac.c auth.c ipset.c domain.c \
 	            dnssec.c dnssec-openssl.c blockdata.c tables.c \
-		    loop.c
+		    loop.c inotify.c
 
 LOCAL_MODULE := dnsmasq
 

debian/changelog

@@ -1,3 +1,17 @@
+dnsmasq (2.73-1) unstable; urgency=low
+
+   * New upstream.
+   * Tweak field width in cache dump to avoid truncating IPv6
+     addresses. (closes: #771557)
+
+ -- Simon Kelley <simon@thekelleys.org.uk>  Fri, 03 Oct 2014 08:49:42 +0000
+
+dnsmasq (2.72-2) unstable; urgency=low
+
+   * Fix build in Debian-kFreeBSD. (closes: #763693)
+
+ -- Simon Kelley <simon@thekelleys.org.uk>  Thu, 02 Oct 2014 22:34:12 +0000
+
 dnsmasq (2.72-1) unstable; urgency=low
 
    * New upstream.

debian/control

@@ -3,7 +3,7 @@ Section: net
 Priority: optional
 Build-depends: gettext, libnetfilter-conntrack-dev [linux-any],
                libidn11-dev, libdbus-1-dev (>=0.61), libgmp-dev, 
-               nettle-dev (>=2.4-3)
+               nettle-dev (>=2.4-3), libbsd-dev [!linux-any]
 Maintainer: Simon Kelley <simon@thekelleys.org.uk>
 Standards-Version: 3.9.5
 

debian/rules

@@ -23,7 +23,7 @@ DEB_COPTS = $(COPTS)
 
 TARGET = install-i18n
 
-DEB_BUILD_ARCH_OS := $(shell dpkg-architecture -qDEB_BUILD_ARCH_OS)
+DEB_HOST_ARCH_OS := $(shell dpkg-architecture -qDEB_HOST_ARCH_OS)
 
 # Force package version based on git tags.
 ifneq (,$(filter gitversion,$(DEB_BUILD_OPTIONS)))
@@ -35,7 +35,7 @@ ifeq (,$(filter nodbus,$(DEB_BUILD_OPTIONS)))
 endif
 
 ifeq (,$(filter noconntrack,$(DEB_BUILD_OPTIONS)))
-ifeq ($(DEB_BUILD_ARCH_OS),linux)
+ifeq ($(DEB_HOST_ARCH_OS),linux)
      DEB_COPTS += -DHAVE_CONNTRACK
 endif
 endif
@@ -83,6 +83,11 @@ ifeq (,$(filter nodnssec,$(DEB_BUILD_OPTIONS)))
      DEB_COPTS += -DHAVE_DNSSEC
 endif
 
+ifneq ($(DEB_HOST_ARCH_OS),linux)
+     # For strlcpy in FreeBSD
+     LDFLAGS += -lbsd
+endif
+
 clean:
 	$(checkdir)
 	rm -rf debian/daemon debian/base debian/utils debian/*~ debian/files debian/substvars debian/utils-substvars
@@ -171,7 +176,7 @@ endif
 	chmod -R g-ws debian/base 
 	dpkg --build debian/base ..
 
-ifeq ($(DEB_BUILD_ARCH_OS),linux)
+ifeq ($(DEB_HOST_ARCH_OS),linux)
 	rm -rf debian/utils
 	install -m 755 -d debian/utils/DEBIAN \
                        -d debian/utils/usr/share/man/man1 \

dnsmasq.conf.example

@@ -645,4 +645,4 @@
 #conf-dir=/etc/dnsmasq.d,.bak
 
 # Include all files in a directory which end in .conf
-#conf-dir=/etc/dnsmasq.d/*.conf
+#conf-dir=/etc/dnsmasq.d/,*.conf

po/pl.po

@@ -10,7 +10,7 @@ msgstr ""
 "Project-Id-Version: pl\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2009-06-10 20:57+0100\n"
-"PO-Revision-Date: 2013-12-04 01:34+0100\n"
+"PO-Revision-Date: 2014-09-23 12:45+0100\n"
 "Last-Translator: Jan Psota <jasiupsota@gmail.com>\n"
 "Language-Team: polski <>\n"
 "Language: pl\n"
@@ -18,12 +18,12 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=2; plural=(n!=1);\n"
-"X-Generator: Poedit 1.5.5\n"
+"X-Generator: Poedit 1.6.9\n"
 "X-Language: pl_PL\n"
 
 #: cache.c:505
 msgid "Internal error in cache."
-msgstr ""
+msgstr "Wewnętrzny błąd w pamięci podręcznej."
 
 #: cache.c:908
 #, c-format
@@ -304,18 +304,16 @@ msgid "Specify path to resolv.conf (defaults to %s)."
 msgstr "Wskazanie położenia pliku resolv.conf (domyślnie: %s)."
 
 #: option.c:362
-#, fuzzy
 msgid "Specify path to file with server= options"
-msgstr "Określenie ścieżki do pliku PID (domyślnie: %s)."
+msgstr "Wskazanie położenia pliku z opcjami server="
 
 #: option.c:363
 msgid "Specify address(es) of upstream servers with optional domains."
 msgstr "Wskazywanie adresów serwerów nazw, opcjonalnie z przypisaniem do domeny."
 
 #: option.c:364
-#, fuzzy
 msgid "Specify address of upstream servers for reverse address queries"
-msgstr "Wskazywanie adresów serwerów nazw, opcjonalnie z przypisaniem do domeny."
+msgstr "Wskazanie serwerów nazw do odwrotnej translacji adresów."
 
 #: option.c:365
 msgid "Never forward queries to specified domains."
@@ -650,23 +648,23 @@ msgstr "Wskazanie domeny i zakresu adresów dla generowanych nazw"
 
 #: option.c:446
 msgid "Activate DNSSEC validation"
-msgstr ""
+msgstr "Uaktywnienie walidacji DNSSEC"
 
 #: option.c:447
 msgid "Specify trust anchor key digest."
-msgstr ""
+msgstr "Wskazanie punktu zaufania dla uwierzytelniania DNSSEC."
 
 #: option.c:448
 msgid "Disable upstream checking for DNSSEC debugging."
-msgstr ""
+msgstr "Akceptowanie nieuwiarygodnionych odpowiedzi DNSSEC (ustawienie bitu CD w zapytaniach)."
 
 #: option.c:449
 msgid "Ensure answers without DNSSEC are in unsigned zones."
-msgstr ""
+msgstr "Upewnianie się, że odpowiedzi bez DNSSEC pochodzą ze stref niepodpisanych."
 
 #: option.c:450
 msgid "Don't check DNSSEC signature timestamps until first cache-reload"
-msgstr ""
+msgstr "Wyłączenie sprawdzania sygnatur czasowych DNSSEC do pierwszego przeładowania pamięci podręcznej."
 
 #: option.c:452
 msgid "Specify DHCPv6 prefix class"
@@ -690,11 +688,11 @@ msgstr "Wyłączenie logowania RA."
 
 #: option.c:458
 msgid "Accept queries only from directly-connected networks"
-msgstr ""
+msgstr "Akceptowanie zapytań wyłącznie z sieci podpiętych bezpośrednio."
 
 #: option.c:459
 msgid "Detect and remove DNS forwarding loops"
-msgstr ""
+msgstr "Wykrywanie i usuwanie pętli zapytań DNS."
 
 #: option.c:661
 #, c-format
@@ -951,18 +949,16 @@ msgid "Bad name in host-record"
 msgstr "niedopuszczalna nazwa w host-record"
 
 #: option.c:3826
-#, fuzzy
 msgid "bad trust anchor"
-msgstr "nieprawidłowy zakres numerów portów"
+msgstr "nieprawidłowa specyfikacja punktu zaufania"
 
 #: option.c:3840
 msgid "bad HEX in trust anchor"
-msgstr ""
+msgstr "zły zapis szesnastkowy"
 
 #: option.c:3850
-#, fuzzy
 msgid "unsupported option (check that dnsmasq was compiled with DHCP/TFTP/DNSSEC/DBus support)"
-msgstr "nieobsługiwana opcja (sprawdź, czy obsługa DHCP/TFTP/DBus została wkompilowana)"
+msgstr "nieobsługiwana opcja (sprawdź, czy obsługa DHCP/TFTP/DNSSEC/DBus została wkompilowana)"
 
 #: option.c:3909
 msgid "missing \""
@@ -981,9 +977,8 @@ msgid "missing parameter"
 msgstr "brak parametru"
 
 #: option.c:3972
-#, fuzzy
 msgid "illegal option"
-msgstr "nieprawidłowa opcja"
+msgstr "niedopuszczalna opcja"
 
 #: option.c:3979
 msgid "error"
@@ -1102,7 +1097,7 @@ msgstr "prawdopodobnie wykryto atak DNS-rebind: %s"
 
 #: forward.c:1132 forward.c:1663
 msgid "Ignoring query from non-local network"
-msgstr ""
+msgstr "Ignorowanie zapytań z sieci pozalokalnych."
 
 #: forward.c:2101
 #, c-format
@@ -1180,9 +1175,9 @@ msgid "using nameserver %s#%d for %s %s"
 msgstr "używam serwera nazw %s#%d dla %s %s"
 
 #: network.c:1483
-#, fuzzy, c-format
+#, c-format
 msgid "NOT using nameserver %s#%d - query loop detected"
-msgstr "używam serwera nazw %s#%d dla %s %s"
+msgstr "NIE używam serwera nazw %s#%d - wykryto pętlę zapytań"
 
 #: network.c:1486
 #, c-format
@@ -1196,16 +1191,15 @@ msgstr "używam serwera nazw %s#%d"
 
 #: dnsmasq.c:154
 msgid "No trust anchors provided for DNSSEC"
-msgstr ""
+msgstr "Nie wskazano punktów zaufania dla DNSSEC."
 
 #: dnsmasq.c:157
 msgid "Cannot reduce cache size from default when DNSSEC enabled"
-msgstr ""
+msgstr "Brak możliwości zmniejszenia pamięci podręcznej poniżej wielkości domyślnej w przypadku używania DNSSEC."
 
 #: dnsmasq.c:159
-#, fuzzy
 msgid "DNSSEC not available: set HAVE_DNSSEC in src/config.h"
-msgstr "Obsługa DBus nie została wkompilowana -- ustaw HAVE_DBUS w src/config.h"
+msgstr "obsługa DNSSEC niedostępna - ustaw HAVE_DNSSEC w src/config.h"
 
 #: dnsmasq.c:165
 msgid "TFTP server not available: set HAVE_TFTP in src/config.h"
@@ -1232,9 +1226,8 @@ msgid "authoritative DNS not available: set HAVE_AUTH in src/config.h"
 msgstr "tryb autorytatywny DNS-a niedostępny - ustaw HAVE_AUTH w src/config.h"
 
 #: dnsmasq.c:193
-#, fuzzy
 msgid "Loop detection not available: set HAVE_LOOP in src/config.h"
-msgstr "Serwer TFTP nie został wkompilowany -- ustaw HAVE_TFTP w src/config.h"
+msgstr "Wykrywanie pętli zapytań nie zostało wkompilowane - ustaw HAVE_LOOP w src/config.h"
 
 #: dnsmasq.c:201
 msgid "zone serial must be configured in --auth-soa"
@@ -1307,15 +1300,15 @@ msgstr "obsługa DBus włączona, trwa podłączanie do serwera DBus"
 
 #: dnsmasq.c:672
 msgid "DNS service limited to local subnets"
-msgstr ""
+msgstr "usługa DNS ograniczona do lokalnych podsieci"
 
 #: dnsmasq.c:677
 msgid "DNSSEC validation enabled"
-msgstr ""
+msgstr "walidacja DNSSEC włączona"
 
 #: dnsmasq.c:679
 msgid "DNSSEC signature timestamps not checked until first cache reload"
-msgstr ""
+msgstr "sprawdzanie sygnatur czasowych DNSSEC wyłączone do czasu przeładowania pamięci podręcznej"
 
 #: dnsmasq.c:684
 #, c-format
@@ -1421,7 +1414,7 @@ msgstr "katalog TFTP %s nie jest dostępny: %s"
 
 #: dnsmasq.c:1151
 msgid "now checking DNSSEC signature timestamps"
-msgstr ""
+msgstr "trwa sprawdzanie sygnatur czasowych podpisów DNSSEC"
 
 #: dnsmasq.c:1218
 #, c-format
@@ -1495,7 +1488,7 @@ msgstr "żądanie DHCP odebrano na interfejsie %s, który nie ma adresu"
 #: dhcp.c:408
 #, c-format
 msgid "ARP-cache injection failed: %s"
-msgstr ""
+msgstr "uzupełnienie pamięci podręcznej ARP nie powiodło się: %s"
 
 #: dhcp.c:506
 #, c-format
@@ -1746,13 +1739,13 @@ msgid "DHCP request for unsupported hardware type (%d) received on %s"
 msgstr "żądanie DHCP od urządzenia nieobsługiwanego typu (%d) odebrano na %s"
 
 #: bpf.c:376
-#, fuzzy, c-format
+#, c-format
 msgid "cannot create PF_ROUTE socket: %s"
-msgstr "nie udało się utworzyć gniazda dla DHCP: %s"
+msgstr "nie udało się utworzyć gniazda PF_ROUTE: %s"
 
 #: bpf.c:397
 msgid "Unknown protocol version from route socket"
-msgstr ""
+msgstr "Nieznana wersja protokołu."
 
 #: helper.c:153
 msgid "lease() function missing in Lua script"
@@ -1937,7 +1930,7 @@ msgstr ", przestarzały prefiks"
 #: dhcp-common.c:826
 #, c-format
 msgid ", lease time "
-msgstr ", czas dzierżawy"
+msgstr ", czas dzierżawy "
 
 #: dhcp-common.c:868
 #, c-format
@@ -2002,50 +1995,50 @@ msgstr "nie powiodło się otwieranie gniazda sterującego IPset: %s"
 #: blockdata.c:58
 #, c-format
 msgid "DNSSEC memory in use %u, max %u, allocated %u"
-msgstr ""
+msgstr "DNSSEC: zużycie pamięci %u, maks. %u, przydzielona %u"
 
 #: tables.c:76
 msgid "error: fill_addr missused"
-msgstr ""
+msgstr "błąd: niepoprawnie użyty fill_addr"
 
 #: tables.c:105
-#, fuzzy, c-format
+#, c-format
 msgid "failed to access pf devices: %s"
-msgstr "brak dostępu do %s: %s"
+msgstr "brak dostępu do /dev/pf (filtra pakietów): %s"
 
 #: tables.c:119
-#, fuzzy, c-format
+#, c-format
 msgid "warning: no opened pf devices %s"
-msgstr "uwaga: nie znaleziono adresu interfejsu %s"
+msgstr "uwaga: brak otwartych filtrów pakietów %s"
 
 #: tables.c:127
-#, fuzzy, c-format
+#, c-format
 msgid "error: cannot use table name %s"
-msgstr "nie można pobrać nazwy hosta: %s"
+msgstr "błąd: nie potrafię użyć nazwy tablicy %s"
 
 #: tables.c:135
 #, c-format
 msgid "error: cannot strlcpy table name %s"
-msgstr ""
+msgstr "błąd: nie potrafię strlcpy nazwy tablicy %s"
 
 #: tables.c:141
 #, c-format
 msgid "warning: pfr_add_tables: %s(%d)"
-msgstr ""
+msgstr "uwaga: pfr_add_tables: %s(%d)"
 
 #: tables.c:147
 msgid "info: table created"
-msgstr ""
+msgstr "info: tablica utworzona"
 
 #: tables.c:158
 #, c-format
 msgid "warning: DIOCR%sADDRS: %s"
-msgstr ""
+msgstr "uwaga: DIOCR%sADDRS: %s"
 
 #: tables.c:162
-#, fuzzy, c-format
+#, c-format
 msgid "%d addresses %s"
-msgstr "zły adres"
+msgstr "%d adresów %s"
 
 #~ msgid "Always send frequent router-advertisements"
 #~ msgstr "Rozsyłanie wielokrotne anonsów rutera (RA)"

src/auth.c

@@ -363,6 +363,10 @@ size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t n
 		 if (((addrlist->flags & ADDRLIST_IPV6)  ? T_AAAA : T_A) == qtype &&
 		     (local_query || filter_zone(zone, flag, &addrlist->addr)))
 		   {
+#ifdef HAVE_IPV6
+		     if (addrlist->flags & ADDRLIST_REVONLY)
+		       continue;
+#endif
 		     found = 1;
 		     log_query(F_FORWARD | F_CONFIG | flag, name, &addrlist->addr, NULL);
 		     if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 

src/cache.c

@@ -1411,7 +1411,7 @@ void dump_cache(time_t now)
 	    *a = 0;
 	    if (strlen(n) == 0 && !(cache->flags & F_REVERSE))
 	      n = "<Root>";
-	    p += sprintf(p, "%-40.40s ", n);
+	    p += sprintf(p, "%-30.30s ", n);
 	    if ((cache->flags & F_CNAME) && !is_outdated_cname_pointer(cache))
 	      a = cache_get_cname_target(cache);
 #ifdef HAVE_DNSSEC
@@ -1454,7 +1454,7 @@ void dump_cache(time_t now)
 	    else if (cache->flags & F_DNSKEY)
 	      t = "K";
 #endif
-	    p += sprintf(p, "%-30.30s %s%s%s%s%s%s%s%s%s  ", a, t,
+	    p += sprintf(p, "%-40.40s %s%s%s%s%s%s%s%s%s  ", a, t,
 			 cache->flags & F_FORWARD ? "F" : " ",
 			 cache->flags & F_REVERSE ? "R" : " ",
 			 cache->flags & F_IMMORTAL ? "I" : " ",

src/dbus.c

@@ -426,7 +426,7 @@ static DBusMessage *dbus_set_bool(DBusMessage *message, int flag, char *name)
     }
   else
     {
-      my_syslog(LOG_INFO, "Disabling --$s option from D-Bus", name);
+      my_syslog(LOG_INFO, "Disabling --%s option from D-Bus", name);
       reset_option_bool(flag);
     }
 

src/dnsmasq.c

@@ -87,11 +87,6 @@ int main (int argc, char **argv)
  
   if (daemon->edns_pktsz < PACKETSZ)
     daemon->edns_pktsz = PACKETSZ;
-#ifdef HAVE_DNSSEC
-  /* Enforce min packet big enough for DNSSEC */
-  if (option_bool(OPT_DNSSEC_VALID) && daemon->edns_pktsz < EDNS_PKTSZ)
-    daemon->edns_pktsz = EDNS_PKTSZ;
-#endif
 
   daemon->packet_buff_sz = daemon->edns_pktsz > DNSMASQ_PACKETSZ ? 
     daemon->edns_pktsz : DNSMASQ_PACKETSZ;
@@ -315,9 +310,15 @@ int main (int argc, char **argv)
   if (daemon->port != 0)
     {
       cache_init();
+
 #ifdef HAVE_DNSSEC
       blockdata_init();
 #endif
+
+#ifdef HAVE_LINUX_NETWORK
+      if (!option_bool(OPT_NO_POLL))
+	inotify_dnsmasq_init();
+#endif
     }
     
   if (option_bool(OPT_DBUS))
@@ -793,6 +794,11 @@ int main (int argc, char **argv)
   
   pid = getpid();
   
+#ifdef HAVE_LINUX_NETWORK
+  /* Using inotify, have to select a resolv file at startup */
+  poll_resolv(1, 0, now);
+#endif
+  
   while (1)
     {
       int maxfd = -1;
@@ -862,11 +868,16 @@ int main (int argc, char **argv)
 #if defined(HAVE_LINUX_NETWORK)
       FD_SET(daemon->netlinkfd, &rset);
       bump_maxfd(daemon->netlinkfd, &maxfd);
+      if (daemon->port != 0 && !option_bool(OPT_NO_POLL))
+	{
+	  FD_SET(daemon->inotifyfd, &rset);
+	  bump_maxfd(daemon->inotifyfd, &maxfd);
+	}
 #elif defined(HAVE_BSD_NETWORK)
       FD_SET(daemon->routefd, &rset);
       bump_maxfd(daemon->routefd, &maxfd);
 #endif
-
+      
       FD_SET(piperead, &rset);
       bump_maxfd(piperead, &maxfd);
 
@@ -929,6 +940,10 @@ int main (int argc, char **argv)
 	route_sock();
 #endif
 
+#ifdef HAVE_LINUX_NETWORK
+      if (daemon->port != 0 && !option_bool(OPT_NO_POLL) && FD_ISSET(daemon->inotifyfd, &rset) && inotify_check())
+	poll_resolv(1, 1, now); 	  
+#else
       /* Check for changes to resolv files once per second max. */
       /* Don't go silent for long periods if the clock goes backwards. */
       if (daemon->last_resolv == 0 || 
@@ -941,7 +956,8 @@ int main (int argc, char **argv)
 	  poll_resolv(0, daemon->last_resolv != 0, now); 	  
 	  daemon->last_resolv = now;
 	}
-      
+#endif
+
       if (FD_ISSET(piperead, &rset))
 	async_event(piperead, now);
       

src/dnsmasq.h

@@ -318,6 +318,7 @@ struct ds_config {
 
 #define ADDRLIST_LITERAL 1
 #define ADDRLIST_IPV6    2
+#define ADDRLIST_REVONLY 4
 
 struct addrlist {
   struct all_addr addr;
@@ -541,6 +542,10 @@ struct resolvc {
   int is_default, logged;
   time_t mtime;
   char *name;
+#ifdef HAVE_LINUX_NETWORK
+  int wd; /* inotify watch descriptor */
+  char *file; /* pointer to file part if path */
+#endif
 };
 
 /* adn-hosts parms from command-line (also dhcp-hostsfile and dhcp-optsfile */
@@ -998,7 +1003,7 @@ extern struct daemon {
   /* DHCP state */
   int dhcpfd, helperfd, pxefd; 
 #if defined(HAVE_LINUX_NETWORK)
-  int netlinkfd;
+  int netlinkfd, inotifyfd;
 #elif defined(HAVE_BSD_NETWORK)
   int dhcp_raw_fd, dhcp_icmp_fd, routefd;
 #endif
@@ -1469,3 +1474,8 @@ void loop_send_probes();
 int detect_loop(char *query, int type);
 #endif
 
+/* inotify.c */
+#ifdef HAVE_LINUX_NETWORK
+void inotify_dnsmasq_init();
+int inotify_check(void);
+#endif

src/forward.c

@@ -1048,7 +1048,7 @@ void receive_query(struct listener *listen, time_t now)
   /* packet buffer overwritten */
   daemon->srv_save = NULL;
   
-  dst_addr_4.s_addr = 0;
+  dst_addr_4.s_addr = dst_addr.addr.addr4.s_addr = 0;
   netmask.s_addr = 0;
   
   if (option_bool(OPT_NOWILD) && listen->iface)
@@ -1057,7 +1057,7 @@ void receive_query(struct listener *listen, time_t now)
      
       if (listen->family == AF_INET)
 	{
-	  dst_addr_4 = listen->iface->addr.in.sin_addr;
+	  dst_addr_4 = dst_addr.addr.addr4 = listen->iface->addr.in.sin_addr;
 	  netmask = listen->iface->netmask;
 	}
     }
@@ -1796,6 +1796,24 @@ unsigned char *tcp_request(int confd, time_t now,
 			  if ((last_server->tcpfd = socket(last_server->addr.sa.sa_family, SOCK_STREAM, 0)) == -1)
 			    continue;
 			  
+#ifdef HAVE_CONNTRACK
+			  /* Copy connection mark of incoming query to outgoing connection. */
+			  if (option_bool(OPT_CONNTRACK))
+			    {
+			      unsigned int mark;
+			      struct all_addr local;
+#ifdef HAVE_IPV6		      
+			      if (local_addr->sa.sa_family == AF_INET6)
+				local.addr.addr6 = local_addr->in6.sin6_addr;
+			      else
+#endif
+				local.addr.addr4 = local_addr->in.sin_addr;
+			      
+			      if (get_incoming_mark(&peer_addr, &local, 1, &mark))
+				setsockopt(last_server->tcpfd, SOL_SOCKET, SO_MARK, &mark, sizeof(unsigned int));
+			    }
+#endif	
+		      
 			  if ((!local_bind(last_server->tcpfd,  &last_server->source_addr, last_server->interface, 1) ||
 			       connect(last_server->tcpfd, &last_server->addr.sa, sa_len(&last_server->addr)) == -1))
 			    {
@@ -1820,24 +1838,6 @@ unsigned char *tcp_request(int confd, time_t now,
 			      size = new_size;
 			    }
 #endif
-			  
-#ifdef HAVE_CONNTRACK
-			  /* Copy connection mark of incoming query to outgoing connection. */
-			  if (option_bool(OPT_CONNTRACK))
-			    {
-			      unsigned int mark;
-			      struct all_addr local;
-#ifdef HAVE_IPV6		      
-			      if (local_addr->sa.sa_family == AF_INET6)
-				local.addr.addr6 = local_addr->in6.sin6_addr;
-			      else
-#endif
-				local.addr.addr4 = local_addr->in.sin_addr;
-			      
-			      if (get_incoming_mark(&peer_addr, &local, 1, &mark))
-				setsockopt(last_server->tcpfd, SOL_SOCKET, SO_MARK, &mark, sizeof(unsigned int));
-			    }
-#endif	
 			}
 		      
 		      *length = htons(size);

src/inotify.c

@@ -0,0 +1,113 @@
+/* dnsmasq is Copyright (c) 2000-2014 Simon Kelley
+ 
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 dated June, 1991, or
+   (at your option) version 3 dated 29 June, 2007.
+ 
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+     
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "dnsmasq.h"
+#include <sys/inotify.h>
+
+#ifdef HAVE_LINUX_NETWORK
+
+/* the strategy is to set a inotify on the directories containing
+   resolv files, for any files in the directory which are close-write 
+   or moved into the directory.
+   
+   When either of those happen, we look to see if the file involved
+   is actually a resolv-file, and if so, call poll-resolv with
+   the "force" argument, to ensure it's read.
+
+   This adds one new error condition: the directories containing
+   all specified resolv-files must exist at start-up, even if the actual
+   files don't. 
+*/
+
+static char *inotify_buffer;
+#define INOTIFY_SZ (sizeof(struct inotify_event) + NAME_MAX + 1)
+
+void inotify_dnsmasq_init()
+{
+  struct resolvc *res;
+
+  inotify_buffer = safe_malloc(INOTIFY_SZ);
+
+
+  daemon->inotifyfd = inotify_init1(IN_NONBLOCK | IN_CLOEXEC);
+  
+  if (daemon->inotifyfd == -1)
+    die(_("failed to create inotify: %s"), NULL, EC_MISC);
+  
+  for (res = daemon->resolv_files; res; res = res->next)
+    {
+      char *d = NULL, *path;
+      
+      if (!(path = realpath(res->name, NULL)))
+	{
+	  /* realpath will fail if the file doesn't exist, but
+	     dnsmasq copes with missing files, so fall back 
+	     and assume that symlinks are not in use in that case. */
+	  if (errno == ENOENT)
+	    path = res->name;
+	  else
+	    die(_("cannot cannonicalise resolv-file %s: %s"), res->name, EC_MISC); 
+	}
+      
+      if ((d = strrchr(path, '/')))
+	{
+	  *d = 0; /* make path just directory */
+	  res->wd = inotify_add_watch(daemon->inotifyfd, path, IN_CLOSE_WRITE | IN_MOVED_TO);
+	  res->file = d+1; /* pointer to filename */
+	  *d = '/';
+	  
+	  if (res->wd == -1 && errno == ENOENT)
+	    die(_("directory %s for resolv-file is missing, cannot poll"), res->name, EC_MISC);
+	  
+	  if (res->wd == -1)
+	    die(_("failed to create inotify for %s: %s"), res->name, EC_MISC);
+	}
+    }
+}
+
+int inotify_check(void)
+{
+  int hit = 0;
+  
+  while (1)
+    {
+      int rc;
+      char *p;
+      struct resolvc *res;
+      struct inotify_event *in;
+
+      while ((rc = read(daemon->inotifyfd, inotify_buffer, INOTIFY_SZ)) == -1 && errno == EINTR);
+      
+      if (rc <= 0)
+	break;
+      
+      for (p = inotify_buffer; rc - (p - inotify_buffer) >= (int)sizeof(struct inotify_event); p += sizeof(struct inotify_event) + in->len) 
+	{
+	  in = (struct inotify_event*)p;
+	  
+	  for (res = daemon->resolv_files; res; res = res->next)
+	    if (res->wd == in->wd && in->len != 0 && strcmp(res->file, in->name) == 0)
+	      hit = 1;
+	}
+    }
+
+  return hit;
+}
+
+#endif
+
+  
+  

src/network.c

@@ -16,10 +16,6 @@
 
 #include "dnsmasq.h"
 
-#ifndef IN6_IS_ADDR_ULA
-#define IN6_IS_ADDR_ULA(a) ((((__const uint32_t *) (a))[0] & htonl (0xfe00000)) == htonl (0xfc000000))
-#endif
-
 #ifdef HAVE_LINUX_NETWORK
 
 int indextoname(int fd, int index, char *name)
@@ -240,7 +236,7 @@ struct iface_param {
 };
 
 static int iface_allowed(struct iface_param *param, int if_index, char *label,
-			 union mysockaddr *addr, struct in_addr netmask, int prefixlen, int dad) 
+			 union mysockaddr *addr, struct in_addr netmask, int prefixlen, int iface_flags) 
 {
   struct irec *iface;
   int mtu = 0, loopback;
@@ -392,6 +388,10 @@ static int iface_allowed(struct iface_param *param, int if_index, char *label,
 		 {
 		    al->addr.addr.addr6 = addr->in6.sin6_addr;
 		    al->flags = ADDRLIST_IPV6;
+		    /* Privacy addresses and addresses still undergoing DAD and deprecated addresses
+		       don't appear in forward queries, but will in reverse ones. */
+		    if (!(iface_flags & IFACE_PERMANENT) || (iface_flags & (IFACE_DEPRECATED | IFACE_TENTATIVE)))
+		      al->flags |= ADDRLIST_REVONLY;
 		 } 
 #endif
 	      }
@@ -403,7 +403,7 @@ static int iface_allowed(struct iface_param *param, int if_index, char *label,
   for (iface = daemon->interfaces; iface; iface = iface->next) 
     if (sockaddr_isequal(&iface->addr, addr))
       {
-	iface->dad = dad;
+	iface->dad = !!(iface_flags & IFACE_TENTATIVE);
 	iface->found = 1; /* for garbage collection */
 	return 1;
       }
@@ -478,7 +478,7 @@ static int iface_allowed(struct iface_param *param, int if_index, char *label,
       iface->dhcp_ok = dhcp_ok;
       iface->dns_auth = auth_dns;
       iface->mtu = mtu;
-      iface->dad = dad;
+      iface->dad = !!(iface_flags & IFACE_TENTATIVE);
       iface->found = 1;
       iface->done = iface->multicast_done = iface->warned = 0;
       iface->index = if_index;
@@ -523,7 +523,7 @@ static int iface_allowed_v6(struct in6_addr *local, int prefix,
   else
     addr.in6.sin6_scope_id = 0;
   
-  return iface_allowed((struct iface_param *)vparam, if_index, NULL, &addr, netmask, prefix, !!(flags & IFACE_TENTATIVE));
+  return iface_allowed((struct iface_param *)vparam, if_index, NULL, &addr, netmask, prefix, flags);
 }
 #endif
 

src/option.c

@@ -1474,22 +1474,25 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	for (arg = comma; arg; arg = comma) 
 	  {
 	    comma = split(arg);
-	    li = opt_malloc(sizeof(struct list));
-	    if (*arg == '*')
+	    if (strlen(arg) != 0)
 	      {
-		li->next = match_suffix;
-		match_suffix = li;
-		/* Have to copy: buffer is overwritten */
-		li->suffix = opt_string_alloc(arg+1);
+		li = opt_malloc(sizeof(struct list));
+		if (*arg == '*')
+		  {
+		    li->next = match_suffix;
+		    match_suffix = li;
+		    /* Have to copy: buffer is overwritten */
+		    li->suffix = opt_string_alloc(arg+1);
+		  }
+		else
+		  {
+		    li->next = ignore_suffix;
+		    ignore_suffix = li;
+		    /* Have to copy: buffer is overwritten */
+		    li->suffix = opt_string_alloc(arg);
+		  }
 	      }
-	    else
-	      {
-		li->next = ignore_suffix;
-		ignore_suffix = li;
-		/* Have to copy: buffer is overwritten */
-		li->suffix = opt_string_alloc(arg);
-	      }
-	  };
+	  }
 	
 	if (!(dir_stream = opendir(directory)))
 	  die(_("cannot access directory %s: %s"), directory, EC_FILE);
@@ -1555,7 +1558,12 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	    free(ignore_suffix->suffix);
 	    free(ignore_suffix);
 	  }
-	      
+	for(; match_suffix; match_suffix = li)
+	  {
+	    li = match_suffix->next;
+	    free(match_suffix->suffix);
+	    free(match_suffix);
+	  }    
 	break;
       }
 
@@ -1933,10 +1941,17 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 			      else
 				{
 				   /* generate the equivalent of
-				      local=/<domain>/
 				      local=/xxx.yyy.zzz.in-addr.arpa/ */
 				  struct server *serv = add_rev4(new->start, msize);
 				  serv->flags |= SERV_NO_ADDR;
+
+				  /* local=/<domain>/ */
+				  serv = opt_malloc(sizeof(struct server));
+				  memset(serv, 0, sizeof(struct server));
+				  serv->domain = d;
+				  serv->flags = SERV_HAS_DOMAIN | SERV_NO_ADDR;
+				  serv->next = daemon->servers;
+				  daemon->servers = serv;
 				}
 			    }
 			}
@@ -1970,10 +1985,17 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 			      else 
 				{
 				  /* generate the equivalent of
-				     local=/<domain>/
 				     local=/xxx.yyy.zzz.ip6.arpa/ */
 				  struct server *serv = add_rev6(&new->start6, msize);
 				  serv->flags |= SERV_NO_ADDR;
+				  
+				  /* local=/<domain>/ */
+				  serv = opt_malloc(sizeof(struct server));
+				  memset(serv, 0, sizeof(struct server));
+				  serv->domain = d;
+				  serv->flags = SERV_HAS_DOMAIN | SERV_NO_ADDR;
+				  serv->next = daemon->servers;
+				  daemon->servers = serv;
 				}
 			    }
 			}

src/rfc1035.c

@@ -1923,14 +1923,17 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
 		  for (intr = daemon->int_names; intr; intr = intr->next)
 		    if (hostname_isequal(name, intr->name))
 		      {
-			ans = 1;
-			if (!dryrun)
-			  {
-			    
-			    for (addrlist = intr->addr; addrlist; addrlist = addrlist->next)
+			for (addrlist = intr->addr; addrlist; addrlist = addrlist->next)
 #ifdef HAVE_IPV6
-			      if (((addrlist->flags & ADDRLIST_IPV6) ? T_AAAA : T_A) == type)
+			  if (((addrlist->flags & ADDRLIST_IPV6) ? T_AAAA : T_A) == type)
 #endif
+			    {
+#ifdef HAVE_IPV6
+			      if (addrlist->flags & ADDRLIST_REVONLY)
+				continue;
+#endif	
+			      ans = 1;	
+			      if (!dryrun)
 				{
 				  gotit = 1;
 				  log_query(F_FORWARD | F_CONFIG | flag, name, &addrlist->addr, NULL);
@@ -1939,7 +1942,7 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
 							  type == T_A ? "4" : "6", &addrlist->addr))
 				    anscount++;
 				}
-			  }
+			    }
 		      }
 		  
 		  if (!dryrun && !gotit)

src/rfc3315.c

@@ -691,6 +691,8 @@ static int dhcp6_no_relay(struct state *state, int msg_type, void *inbuff, size_
 #endif
 
 	    o = build_ia(state, &t1cntr);
+	    if (address_assigned)
+		address_assigned = 2;
 
 	    for (ia_counter = 0; ia_option; ia_counter++, ia_option = opt6_find(opt6_next(ia_option, ia_end), ia_end, OPTION6_IAADDR, 24))
 	      {
@@ -781,6 +783,27 @@ static int dhcp6_no_relay(struct state *state, int msg_type, void *inbuff, size_
 		address_assigned = 1;
 	      }
 	    
+	    if (address_assigned != 1)
+	      {
+		/* If the server will not assign any addresses to any IAs in a
+		   subsequent Request from the client, the server MUST send an Advertise
+		   message to the client that doesn't include any IA options. */
+		if (!state->lease_allocate)
+		  {
+		    save_counter(o);
+		    continue;
+		  }
+		
+		/* If the server cannot assign any addresses to an IA in the message
+		   from the client, the server MUST include the IA in the Reply message
+		   with no addresses in the IA and a Status Code option in the IA
+		   containing status code NoAddrsAvail. */
+		o1 = new_opt6(OPTION6_STATUS_CODE);
+		put_opt6_short(DHCP6NOADDRS);
+		put_opt6_string(_("address unavailable"));
+		end_opt6(o1);
+	      }
+	    
 	    end_ia(t1cntr, min_time, 0);
 	    end_opt6(o);	
 	  }
@@ -806,7 +829,7 @@ static int dhcp6_no_relay(struct state *state, int msg_type, void *inbuff, size_
 	    put_opt6_short(DHCP6NOADDRS);
 	    put_opt6_string(_("no addresses available"));
 	    end_opt6(o1);
-	    log6_packet(state, "DHCPADVERTISE", NULL, _("no addresses available"));
+	    log6_packet(state, state->lease_allocate ? "DHCPREPLY" : "DHCPADVERTISE", NULL, _("no addresses available"));
 	  }
 
 	break;
@@ -862,7 +885,7 @@ static int dhcp6_no_relay(struct state *state, int msg_type, void *inbuff, size_
 		      {
 			/* Static range, not configured. */
 			o1 = new_opt6(OPTION6_STATUS_CODE);
-			put_opt6_short(DHCP6UNSPEC);
+			put_opt6_short(DHCP6NOADDRS);
 			put_opt6_string(_("address unavailable"));
 			end_opt6(o1);
 		      }

src/tables.c

@@ -20,6 +20,10 @@
 
 #if defined(HAVE_IPSET) && defined(HAVE_BSD_NETWORK)
 
+#ifndef __FreeBSD__
+#include <bsd/string.h>
+#endif
+
 #include <sys/types.h>
 #include <sys/ioctl.h>
 
@@ -136,7 +140,7 @@ int add_to_ipset(const char *setname, const struct all_addr *ipaddr,
       return -1;
     }
   
-  if (rc = pfr_add_tables(&table, 1, &n, 0)) 
+  if ((rc = pfr_add_tables(&table, 1, &n, 0))) 
     {
       my_syslog(LOG_WARNING, _("warning: pfr_add_tables: %s(%d)"),
 		pfr_strerror(errno),rc);