Updated version of contrib/try-all-ns

CHANGELOG

@@ -17,7 +17,52 @@ version 2.69
 	    dnsmasq, [fe80::] with the link-local address. 
 	    Thanks to Tsachi Kimeldorfer for championing this.
 
+	    DNSSEC validation and caching. Dnsmasq needs to be
+	    compiled with this enabled, with 
+	    
+	    make dnsmasq COPTS=-DHAVE_DNSSEC
+	    
+	    this add dependencies on the nettle crypto library and the 
+	    gmp maths library. It's possible to have these linked
+	    statically with
+	    
+	    make dnsmasq COPTS='-DHAVE_DNSSEC -DHAVE_DNSSEC_STATIC'
+	    
+	    which bloats the dnsmasq binary to over a megabyte, but
+	    saves the size of the shared libraries which are five
+	    times that size.
+	    To enable, DNSSEC, you will need a set of
+	    trust-anchors. Now that the TLDs are signed, this can be
+	    the keys for the root zone, and for convenience they are
+	    included in trust-anchors.conf in the dnsmasq
+	    distribution. You should of course check that these are
+	    legitimate and up-to-date. So, adding
+	    
+	    conf-file=/path/to/trust-anchors.conf
+	    dnssec
 
+	    to your config is all thats needed to get things
+	    working. The upstream nameservers have to be DNSSEC-capable
+	    too, of course. Many ISP nameservers aren't, but the
+	    Google public nameservers (8.8.8.8 and 8.8.4.4) are.
+	    When DNSSEC is configured, dnsmasq validates any queries 
+	    for domains which are signed. Query results which are 
+	    bogus are replaced with SERVFAIL replies, and results 
+	    which are correctly signed have the AD bit set. In 
+	    addition, and just as importantly, dnsmasq supplies 
+	    correct DNSSEC information to clients which are doing 
+	    their own validation, and caches DNSKEY, DS and RRSIG
+	    records, which significantly improve the performance of 
+	    downstream validators. Setting --log-queries will show 
+	    DNSSEC in action.
+
+	    The development of DNSSEC in dnsmasq was started by 
+	    Giovanni Bajo, to whom huge thanks are owed. It has been
+	    supported by Comcast, whose techfund grant has allowed for 
+	    an invaluable period of full-time work to get it to 
+	    a workable state.
+ 
+	    
 version 2.68
             Use random addresses for DHCPv6 temporary address
             allocations, instead of algorithmically determined stable

Makefile

@@ -61,6 +61,7 @@ lua_cflags =    `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_LUASCRIPT $(PKG_CON
 lua_libs =      `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_LUASCRIPT $(PKG_CONFIG) --libs lua5.1` 
 nettle_cflags = `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_DNSSEC $(PKG_CONFIG) --cflags nettle hogweed`
 nettle_libs =   `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_DNSSEC $(PKG_CONFIG) --libs nettle hogweed`
+gmp_libs =      `echo $(COPTS) | $(top)/bld/pkg-wrapper HAVE_DNSSEC $(PKG_CONFIG) --copy -lgmp`
 sunos_libs =    `if uname | grep SunOS >/dev/null 2>&1; then echo -lsocket -lnsl -lposix4; fi`
 version =     -DVERSION='\"`$(top)/bld/get-version $(top)`\"'
 
@@ -77,7 +78,7 @@ all : $(BUILDDIR)
 	@cd $(BUILDDIR) && $(MAKE) \
  top="$(top)" \
  build_cflags="$(version) $(dbus_cflags) $(idn_cflags) $(ct_cflags) $(lua_cflags) $(nettle_cflags)" \
- build_libs="$(dbus_libs) $(idn_libs) $(ct_libs) $(lua_libs) $(sunos_libs) $(nettle_libs)" \
+ build_libs="$(dbus_libs) $(idn_libs) $(ct_libs) $(lua_libs) $(sunos_libs) $(nettle_libs) $(gmp_libs)" \
  -f $(top)/Makefile dnsmasq 
 
 mostly_clean :
@@ -101,7 +102,7 @@ all-i18n : $(BUILDDIR)
  top="$(top)" \
  i18n=-DLOCALEDIR=\'\"$(LOCALEDIR)\"\' \
  build_cflags="$(version) $(dbus_cflags) $(ct_cflags) $(lua_cflags) $(nettle_cflags) `$(PKG_CONFIG) --cflags libidn`" \
- build_libs="$(dbus_libs) $(ct_libs) $(lua_libs) $(sunos_libs) $(nettle_libs) `$(PKG_CONFIG) --libs libidn`"  \
+ build_libs="$(dbus_libs) $(ct_libs) $(lua_libs) $(sunos_libs) $(nettle_libs) $(gmp_libs) `$(PKG_CONFIG) --libs libidn`"  \
  -f $(top)/Makefile dnsmasq
 	for f in `cd $(PO); echo *.po`; do \
 		cd $(top) && cd $(BUILDDIR) && $(MAKE) top="$(top)" -f $(top)/Makefile $${f%.po}.mo; \

bld/pkg-wrapper

@@ -9,19 +9,24 @@ shift
 
 in=`cat`
 
-if grep "^\#[[:space:]]*define[[:space:]]*${search}_STATIC" config.h >/dev/null 2>&1 || \
-   echo $in | grep ${search}_STATIC >/dev/null 2>&1; then
-   if [ $op = "--libs" ]; then
-     pkg=`$pkg --static $op $*`
-     echo "-Wl,-Bstatic $pkg -Wl,-Bdynamic"
-     exit 0
-   fi
-fi
-
 if grep "^\#[[:space:]]*define[[:space:]]*$search" config.h >/dev/null 2>&1 || \
     echo $in | grep $search >/dev/null 2>&1; then
-    pkg=`$pkg $op $*`
-    echo "$pkg"
-    
+
+    if [ $op = "--copy" ]; then
+	pkg="$*"
+    else
+	pkg=`$pkg $op $*` 
+    fi
+
+    if grep "^\#[[:space:]]*define[[:space:]]*${search}_STATIC" config.h >/dev/null 2>&1 || \
+	echo $in | grep ${search}_STATIC >/dev/null 2>&1; then
+	if [ $op = "--libs" ] || [ $op = "--copy" ]; then
+	    echo "-Wl,-Bstatic $pkg -Wl,-Bdynamic"
+	else
+	    echo "$pkg" 
+	fi
+    else
+	echo "$pkg"
+    fi
 fi
 

contrib/try-all-ns/dnsmasq-2.68-try-all-ns

@@ -0,0 +1,29 @@
+From: Jesse Glick <jglick@cloudbees.com>
+To: dnsmasq-discuss@lists.thekelleys.org.uk
+Subject: Re: [Dnsmasq-discuss] Ability to delegate to one server but fall
+ back to another after NXDOMAIN?
+
+
+On Wed, Jan 15, 2014 at 12:30 PM, Simon Kelley <simon@thekelleys.org.uk> wrote:
+> > There's a (very old) patch in contrib/try-all-ns that would make a starting point
+This does not apply against trunk, so I tried to rework it. The
+following appears to do what I expect:
+
+diff --git a/src/forward.c b/src/forward.c
+index 8167229..76070b5 100644
+--- a/src/forward.c
++++ b/src/forward.c
+@@ -610,7 +610,11 @@ void reply_query(int fd, int family, time_t now)
+
+   if ((RCODE(header) == SERVFAIL || RCODE(header) == REFUSED) &&
+       !option_bool(OPT_ORDER) &&
+-      forward->forwardall == 0)
++      forward->forwardall == 0 ||
++      /* try each in turn */
++      RCODE(header) == NXDOMAIN &&
++      option_bool(OPT_ORDER) &&
++      server->next != NULL)
+     /* for broken servers, attempt to send to another one. */
+     {
+       unsigned char *pheader;
+

debian/changelog

@@ -1,7 +1,13 @@
+dnsmasq (2.69-1) unstable; urgency=low
+
+   * New upstream.
+
+ -- Simon Kelley <simon@thekelleys.org.uk>  Tue, 4 Feb 2014 16:28:12 +0000
+
 dnsmasq (2.68-1) unstable; urgency=low
 
    * New upstream. (closes: #730553)
-   
+
  -- Simon Kelley <simon@thekelleys.org.uk>  Sun, 8 Dec 2013 15:57:32 +0000
 
 dnsmasq (2.67-1) unstable; urgency=low

debian/control

@@ -1,7 +1,8 @@
 Source: dnsmasq
 Section: net
 Priority: optional
-Build-depends: gettext, libnetfilter-conntrack-dev [linux-any], libidn11-dev, libdbus-1-dev (>=0.61)
+Build-depends: gettext, libnetfilter-conntrack-dev [linux-any],
+               libidn11-dev, libdbus-1-dev (>=0.61), libgmp-dev, nettle-dev (>=2.4-3)
 Maintainer: Simon Kelley <simon@thekelleys.org.uk>
 Standards-Version: 3.9.3
 

debian/rules

@@ -77,7 +77,7 @@ ifneq (,$(filter uselua,$(DEB_BUILD_OPTIONS)))
      DEB_COPTS += -DHAVE_LUASCRIPT
 endif
 
-ifneq (,$(filter usednssec,$(DEB_BUILD_OPTIONS)))
+ifeq (,$(filter nodnssec,$(DEB_BUILD_OPTIONS)))
      DEB_COPTS += -DHAVE_DNSSEC
 endif
 

src/dnssec.c

@@ -505,7 +505,7 @@ static int validate_rrset(time_t now, struct dns_header *header, size_t plen, in
        j != 0; j--) 
     {
       unsigned char *pstart, *pdata;
-      int stype, sclass, ttl;
+      int stype, sclass;
 
       pstart = p;
       
@@ -514,7 +514,7 @@ static int validate_rrset(time_t now, struct dns_header *header, size_t plen, in
       
       GETSHORT(stype, p);
       GETSHORT(sclass, p);
-      GETLONG(ttl, p);
+      p += 4; /* TTL */
       
       pdata = p;