Don't BIND DHCP socket if more interfaces may come along later.

Also make man page on this clearer, as it's been confusing many.

.gitignore

@@ -0,0 +1,13 @@
+src/*.o
+src/*.mo
+src/dnsmasq.pot
+src/dnsmasq
+src/.configured
+contrib/wrt/dhcp_lease_time
+contrib/wrt/dhcp_release
+debian/base/
+debian/daemon/
+debian/files
+debian/substvars
+debian/utils-substvars
+debian/utils/

CHANGELOG

@@ -1,3 +1,141 @@
+version 2.67
+	    Fix crash if upstream server returns SERVFAIL when
+	    --conntrack in use. Thanks to Giacomo Tazzari for finding
+	    this and supplying the patch. 
+
+	    Repair regression in 2.64. That release stopped sending
+	    lease-time information in the reply to DHCPINFORM
+	    requests, on the correct grounds that it was a standards
+	    violation. However, this broke the dnsmasq-specific
+	    dhcp_lease_time utility. Now, DHCPINFORM returns
+	    lease-time only if it's specifically requested
+	    (maintaining standards) and the dhcp_lease_time utility
+	    has been taught to ask for it (restoring functionality). 
+
+	    Fix --dhcp-match, --dhcp-vendorclass and --dhcp-userclass
+	    to work with BOOTP and well as DHCP. Thanks to Peter
+	    Korsgaard for spotting the problem. 
+
+	    Add --synth-domain. Thanks to Vishvananda Ishaya for
+	    suggesting this.
+
+	    Fix failure to compile ipset.c if old kernel headers are
+	    in use. Thanks to Eugene Rudoy for pointing this out.
+
+	    Handle IPv4 interface-address labels in Linux. These are
+	    often used to emulate the old IP-alias addresses. Before,
+	    using --interface=eth0 would service all the addresses of
+	    eth0, including ones configured as aliases, which appear
+	    in ifconfig as eth0:0. Now, only addresses with the label
+	    eth0 are active. This is not backwards compatible: if you
+	    want to continue to bind the aliases too, you need to add
+	    eg. --interface=eth0:0 to the config. 
+	
+	    Fix "failed to set SO_BINDTODEVICE on DHCP socket: Socket 
+	    operation on non-socket" error on startup with
+	    configurations which have exactly one --interface option
+	    and do RA but _not_ DHCPv6. Thanks to Trever Adams for the
+	    bug report.
+
+	    Generalise --interface-name to cope with IPv6 addresses
+	    and multiple addresses per interface per address family.
+
+	    Fix option parsing for --dhcp-host, which was generating a
+	    spurious error when all seven possible items were
+	    included. Thanks to Zhiqiang Wang for the bug report.
+
+	    Remove restriction on prefix-length in --auth-zone. Thanks
+	    to Toke Hoiland-Jorgensen for suggesting this.
+
+	    Log when the maximum number of concurrent DNS queries is
+	    reached. Thanks to Marcelo Salhab Brogliato for the patch.
+
+	    If wildcards are used in --interface, don't assume that 
+	    there will only ever be one available interface for DHCP
+	    just because there is one at start-up. More may appear, so
+	    we can't use SO_BINDTODEVICE. Thanks to Natrio for the bug
+	    report. 
+
+		
+version 2.66
+            Add the ability to act as an authoritative DNS
+            server. Dnsmasq can now answer queries from the wider 'net
+            with local data, as long as the correct NS records are set
+            up. Only local data is provided, to avoid creating an open
+            DNS relay. Zone transfer is supported, to allow secondary
+            servers to be configured.
+
+	    Add "constructed DHCP ranges" for DHCPv6. This is intended
+	    for IPv6 routers which get prefixes dynamically via prefix
+	    delegation. With suitable configuration, stateful DHCPv6
+	    and RA can happen automatically as prefixes are delegated
+	    and then deprecated, without having  to re-write the
+	    dnsmasq configuration file or restart the daemon. Thanks to
+	    Steven Barth for extensive testing and development work on
+	    this idea.
+
+	    Fix crash on startup on Solaris 11. Regression probably
+	    introduced in 2.61.  Thanks to Geoff Johnstone for the
+	    patch.
+
+	    Add code to make behaviour for TCP DNS requests that same
+	    as for UDP requests, when a request arrives for an allowed 
+	    address, but via a banned interface. This change is only
+	    active on Linux, since the relevant API is missing (AFAIK)
+	    on other platforms. Many thanks to Tomas Hozza for
+	    spotting the problem, and doing invaluable discovery of
+	    the obscure and undocumented API required for the solution.
+
+	    Don't send the default DHCP option advertising dnsmasq as
+	    the local DNS server if dnsmasq is configured to not act
+	    as DNS server, or it's configured to a non-standard port.
+ 
+            Add DNSMASQ_CIRCUIT_ID, DNSMASQ_SUBCRIBER_ID,
+            DNSMASQ_REMOTE_ID variables to the environment of the
+            lease-change script (and the corresponding Lua). These hold
+            information inserted into the DHCP request by a DHCP relay
+            agent. Thanks to Lakefield Communications for providing a
+            bounty for this addition.
+ 
+	    Fixed crash, introduced in 2.64, whilst handling DHCPv6
+	    information-requests with some common configurations.
+	    Thanks to Robert M. Albrecht for the bug report and 
+	    chasing the problem.
+
+	    Add --ipset option. Thanks to Jason A. Donenfeld for the 
+	    patch.
+
+	    Don't erroneously reject some option names in --dhcp-match
+	    options. Thanks to Benedikt Hochstrasser for the bug report.
+	    
+	    Allow a trailing '*' wildcard in all interface-name
+	    configurations. Thanks to Christian Parpart for the patch.
+
+	    Handle the situation where libc headers define
+	    SO_REUSEPORT, but the kernel in use doesn't, to cope with
+	    the introduction of this option to Linux. Thanks to Rich
+	    Felker for the bug report.
+
+	    Update Polish translation. Thanks to Jan Psota.
+
+	    Fix crash if the configured DHCP lease limit is
+	    reached. Regression occurred in 2.61. Thanks to Tsachi for
+	    the bug report. 
+	    
+	    Update the French translation. Thanks to Gildas le Nadan.
+
+  
+version 2.65
+	    Fix regression which broke forwarding of queries sent via
+	    TCP which are not for A and AAAA and which were directed to
+	    non-default servers. Thanks to Niax for the bug report.
+
+	    Fix failure to build with DHCP support excluded. Thanks to 
+	    Gustavo Zacarias for the patch.
+	    
+	    Fix nasty regression in 2.64 which completely broke cacheing.
+
+
 version 2.64
             Handle DHCP FQDN options with all flag bits zero and
             --dhcp-client-update set. Thanks to Bernd Krumbroeck for

FAQ

@@ -22,7 +22,7 @@ A: The high ports that dnsmasq opens are for replies from the upstream
    now uses a new, randomly selected, port for each query. The old
    default behaviour (use one port allocated by the OS) is available by
    setting --query-port=0, and setting the query port to a positive
-   value is still works. You should think hard and know what you are
+   value still works. You should think hard and know what you are
    doing before using either of these options.
  
 Q: Why doesn't dnsmasq support DNS queries over TCP? Don't the RFC's specify
@@ -112,7 +112,7 @@ A: Resolver code sometime does strange things when given names without
    hostname  will fix things. (ie "ping myhost" fails, but "ping
    myhost." works. The solution is to make sure that all your hosts
    have a domain set ("domain" in resolv.conf, or set a domain in 
-   your DHCP server, see below fr Windows XP and Mac OS X). 
+   your DHCP server, see below for Windows XP and Mac OS X). 
    Any domain  will do, but "localnet" is traditional. Now when you
    resolve "myhost" the resolver will attempt to look up 
    "myhost.localnet" so you need to have dnsmasq reply to that name. 

Makefile

@@ -1,4 +1,4 @@
-# dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+# dnsmasq is Copyright (c) 2000-2013 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
@@ -65,7 +65,7 @@ version =     -DVERSION='\"`$(top)/bld/get-version $(top)`\"'
 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
+       dhcp-common.o outpacket.o radv.o slaac.o auth.o ipset.o domain.o
 
 hdrs = dnsmasq.h config.h dhcp-protocol.h dhcp6-protocol.h \
        dns-protocol.h radv-protocol.h

bld/Android.mk

@@ -8,7 +8,7 @@ LOCAL_SRC_FILES :=  bpf.c cache.c dbus.c dhcp.c dnsmasq.c \
                     netlink.c network.c option.c rfc1035.c \
 		    rfc2131.c tftp.c util.c conntrack.c \
 		    dhcp6.c rfc3315.c dhcp-common.c outpacket.c \
-		    radv.c slaac.c
+		    radv.c slaac.c auth.c ipset.c domain.c
 
 LOCAL_MODULE := dnsmasq
 

bld/get-version

@@ -17,7 +17,7 @@ elif grep '\$Format:%d\$' $1/VERSION >/dev/null 2>&1; then
 # unsubstituted VERSION, but no git available.
     echo UNKNOWN
 else
-     vers=`cat $1/VERSION | sed 's/[(), ]/,/ g' | tr ',' '\n' | grep $v[0-9]`
+     vers=`cat $1/VERSION | sed 's/[(), ]/,/ g' | tr ',' '\n' | grep ^v[0-9]`
 
      if [ $? -eq 0 ]; then
          echo "${vers}" | sort | head -n 1 | sed 's/^v//'

contrib/wrt/dhcp_lease_time.1

@@ -12,9 +12,11 @@ If an error occurs or no lease exists for the given address,
 nothing is sent to stdout a message is sent to stderr and a
 non-zero error code is returned.
 
-Requires dnsmasq 2.40 or later and may not work with other DHCP servers.
+Requires dnsmasq 2.67 or later and may not work with other DHCP servers.
 
-The address argument is a dotted-quad IP addresses and mandatory. 
+The address argument is a dotted-quad IP addresses and mandatory.
+.SH LIMITATIONS
+Only works with IPv4 addresses and DHCP leases. 
 .SH SEE ALSO
 .BR dnsmasq (8)
 .SH AUTHOR

contrib/wrt/dhcp_lease_time.c

@@ -20,7 +20,7 @@
    nothing is sent to stdout a message is sent to stderr and a
    non-zero error code is returned.
 
-   Requires dnsmasq 2.40 or later. 
+   This version requires dnsmasq 2.67 or later. 
 */
 
 #include <sys/types.h> 
@@ -46,6 +46,7 @@
 #define OPTION_LEASE_TIME        51
 #define OPTION_OVERLOAD          52
 #define OPTION_MESSAGE_TYPE      53
+#define OPTION_REQUESTED_OPTIONS 55
 #define OPTION_END               255
 #define DHCPINFORM               8
 #define DHCP_SERVER_PORT         67
@@ -167,6 +168,12 @@ int main(int argc, char **argv)
   *(p++) = 1;
   *(p++) = DHCPINFORM;
 
+  /* Explicity request the lease time, it won't be sent otherwise:
+     this is a dnsmasq extension, not standard. */
+  *(p++) = OPTION_REQUESTED_OPTIONS;
+  *(p++) = 1;
+  *(p++) = OPTION_LEASE_TIME;
+  
   *(p++) = OPTION_END;
  
   dest.sin_family = AF_INET; 

contrib/wrt/dhcp_release.1

@@ -27,6 +27,8 @@ for ethernet. This encoding is the one used in dnsmasq lease files.
 The client-id is optional. If it is "*" then it treated as being missing.
 .SH NOTES
 MUST be run as root - will fail otherwise.
+.SH LIMITATIONS
+Only usable on IPv4 DHCP leases.
 .SH SEE ALSO
 .BR dnsmasq (8)
 .SH AUTHOR

contrib/wrt/dhcp_release.c

@@ -255,10 +255,6 @@ int main(int argc, char **argv)
   struct ifreq ifr;
   int fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
   int nl = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
-  struct iovec iov;
- 
-  iov.iov_len = 200;
-  iov.iov_base = malloc(iov.iov_len);
 
   if (argc < 4 || argc > 5)
     { 

debian/changelog

@@ -1,3 +1,34 @@
+dnsmasq (2.67-1) unstable; urgency=low
+
+   * New upstream.
+
+ -- Simon Kelley <simon@thekelleys.org.uk>  Tue, 28 May 2013 14:50:22 +0000
+
+dnsmasq (2.66-3) unstable; urgency=low
+
+   * Update resolvconf script for dnscrypt-proxy integration. (closes: #709179)
+
+ -- Simon Kelley <simon@thekelleys.org.uk>  Tue, 28 May 2013 14:39:51 +0000
+
+dnsmasq (2.66-2) unstable; urgency=low
+
+   * Fix error on startup with some configs. (closes: #709010)
+
+ -- Simon Kelley <simon@thekelleys.org.uk>  Mon, 20 May 2013 11:46:11 +0000
+
+dnsmasq (2.66-1) unstable; urgency=low
+
+   * New upstream.
+   * Add support for noipset in DEB_BUILD_OPTIONS.
+
+ -- Simon Kelley <simon@thekelleys.org.uk>  Fri, 22 Feb 2013 21:52:13 +0000
+
+dnsmasq (2.65-1) unstable; urgency=low
+
+   * New upstream.
+
+ -- Simon Kelley <simon@thekelleys.org.uk>  Fri, 14 Dec 2012 11:34:12 +0000
+
 dnsmasq (2.64-1) unstable; urgency=low
 
    * New upstream.

debian/copyright

@@ -1,4 +1,4 @@
-dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+dnsmasq is Copyright (c) 2000-2013 Simon Kelley
 
 It was downloaded from: http://www.thekelleys.org.uk/dnsmasq/
 

debian/readme

@@ -59,6 +59,7 @@ Notes on configuring dnsmasq as packaged for Debian.
       noipv6      : omit IPv6 support.
       nodbus      : omit DBus support.
       noconntrack : omit connection tracking support. 
+      noipset     : omit IPset support.
       nortc       : compile alternate mode suitable for systems without an RTC.
       noi18n      : omit translations and internationalisation support.
       noidn       : omit international domain name support, must be

debian/resolvconf

@@ -1,16 +1,14 @@
-#!/bin/bash
+#!/bin/sh
 #
 # Script to update the resolver list for dnsmasq
 #
-# N.B. Resolvconf may run us even if dnsmasq is not running.
-# If dnsmasq is installed then we go ahead and update
-# the resolver list in case dnsmasq is started later.
+# N.B. Resolvconf may run us even if dnsmasq is not (yet) running.
+# If dnsmasq is installed then we go ahead and update the resolver list
+# in case dnsmasq is started later.
 #
-# Assumption: On entry, PWD contains the resolv.conf-type files
+# Assumption: On entry, PWD contains the resolv.conf-type files.
 #
-# Requires bash because it uses a non-POSIX printf extension.
-#
-# Licensed under the GNU GPL.  See /usr/share/common-licenses/GPL.
+# This file is part of the dnsmasq package.
 #
 
 set -e
@@ -18,6 +16,8 @@ set -e
 RUN_DIR="/var/run/dnsmasq"
 RSLVRLIST_FILE="${RUN_DIR}/resolv.conf"
 TMP_FILE="${RSLVRLIST_FILE}_new.$$"
+MY_RECORD_NAME="lo.dnsmasq"
+DNSCRYPT_RECORD_NAME="lo.dnscrypt"
 
 [ -x /usr/sbin/dnsmasq ] || exit 0
 [ -x /lib/resolvconf/list-records ] || exit 1
@@ -27,7 +27,7 @@ PATH=/bin:/sbin
 report_err() { echo "$0: Error: $*" >&2 ; }
 
 # Stores arguments (minus duplicates) in RSLT, separated by spaces
-# Doesn't work properly if an argument itself contain whitespace
+# Doesn't work properly if an argument itself contains whitespace
 uniquify()
 {
 	RSLT=""
@@ -45,7 +45,22 @@ if [ ! -d "$RUN_DIR" ] && ! mkdir --parents --mode=0755 "$RUN_DIR" ; then
 	exit 1
 fi
 
-RSLVCNFFILES="$(/lib/resolvconf/list-records | sed -e '/^lo.dnsmasq$/d')"
+RSLVCNFFILES=""
+for F in $(/lib/resolvconf/list-records) ; do
+	case "$F" in
+	  "$MY_RECORD_NAME")
+		# Omit
+		;;
+	  "$DNSCRYPT_RECORD_NAME")
+		# Dnscrypt, I only have eyes for you
+		RSLVCNFFILES="$DNSCRYPT_RECORD_NAME"
+		break
+		;;
+	  *)
+		RSLVCNFFILES="${RSLVCNFFILES:+$RSLVCNFFILES }$F"
+		;;
+	esac
+done
 
 NMSRVRS=""
 if [ "$RSLVCNFFILES" ] ; then
@@ -56,8 +71,8 @@ fi
 # Dnsmasq uses the mtime of $RSLVRLIST_FILE, with a resolution of one second,
 # to detect changes in the file. This means that if a resolvconf update occurs
 # within one second of the previous one then dnsmasq may fail to notice the
-# more recent change.  To work around this problem we sleep here to ensure
-# that the new mtime is different.
+# more recent change. To work around this problem we sleep one second here
+# if necessary in order to ensure that the new mtime is different.
 if [ -f "$RSLVRLIST_FILE" ] && [ "$(ls -go --time-style='+%s' "$RSLVRLIST_FILE" | { read p h s t n ; echo "$t" ; })" = "$(date +%s)" ] ; then
 	sleep 1
 fi

debian/rules

@@ -33,6 +33,10 @@ ifeq ($(DEB_BUILD_ARCH_OS),linux)
 endif
 endif
 
+ifneq (,$(filter noipset,$(DEB_BUILD_OPTIONS)))
+     COPTS += -DNO_IPSET
+endif
+
 ifneq (,$(filter nodhcp6,$(DEB_BUILD_OPTIONS)))
      COPTS += -DNO_DHCP6
 endif

dnsmasq.conf.example

@@ -69,6 +69,10 @@
 # --address (and --server) work with IPv6 addresses too.
 #address=/www.thekelleys.org.uk/fe80::20d:60ff:fe36:f83
 
+# Add the IPs of all queries to yahoo.com, google.com, and their
+# subdomains to the vpn and search ipsets:
+#ipset=/yahoo.com/google.com/vpn,search
+
 # You can control how dnsmasq talks to a server: this forces
 # queries to 10.1.2.3 to be routed via eth1
 # server=10.1.2.3@eth1

man/dnsmasq.8

@@ -6,24 +6,28 @@ dnsmasq \- A lightweight DHCP and caching DNS server.
 .I [OPTION]...
 .SH "DESCRIPTION"
 .BR dnsmasq
-is a lightweight DNS, TFTP and DHCP server. It is intended to provide 
+is a lightweight DNS, TFTP, PXE, router advertisement and DHCP server. It is intended to provide 
 coupled DNS and DHCP service to a LAN.
 .PP
 Dnsmasq accepts DNS queries and either answers them from a small, local,
 cache or forwards them to a real, recursive, DNS server. It loads the
 contents of /etc/hosts so that local hostnames
 which do not appear in the global DNS can be resolved and also answers
-DNS queries for DHCP configured hosts.
+DNS queries for DHCP configured hosts. It can also act as the authoritative DNS server for one or more domains, allowing local names to appear in the global DNS.
 .PP
 The dnsmasq DHCP server supports static address assignments and multiple
 networks. It automatically
 sends a sensible default set of DHCP options, and can be configured to
 send any desired set of DHCP options, including vendor-encapsulated
 options. It includes a secure, read-only,
-TFTP server to allow net/PXE boot of DHCP hosts and also supports BOOTP.
+TFTP server to allow net/PXE boot of DHCP hosts and also supports BOOTP. The PXE support is full featured, and includes a proxy mode which supplies PXE information to clients whilst DHCP address allocation is done by another server.
 .PP
-Dnsmasq 
-supports IPv6 for all functions and a minimal router-advertisement daemon.
+The dnsmasq DHCPv6 server provides the same set of features as the
+DHCPv4 server, and in addition, it includes router advertisements and
+a neat feature which allows nameing for clients which use DHCPv4 and
+stateless autoconfiguration only for IPv6 configuration. There is support for doing address allocation (both DHCPv6 and RA) from subnets which are dynamically delegated via DHCPv6 prefix delegation.
+.PP
+Dnsmasq is coded with small embedded systems in mind. It aims for the smallest possible memory footprint compatible with the supported functions,  and allows uneeded functions to be omitted from the compiled binary.  
 .SH OPTIONS
 Note that in general missing parameters are allowed and switch off
 functions, for instance "--pid-file" disables writing a PID file. On
@@ -74,6 +78,9 @@ the upstream DNS servers.
 .B --max-cache-ttl=<time>
 Set a maximum TTL value for entries in the cache.
 .TP
+.B --auth-ttl=<time>
+Set the TTL value returned in answers from the authoritative server.
+.TP
 .B \-k, --keep-in-foreground
 Do not go into the background at startup but otherwise run as
 normal. This is intended for use when dnsmasq is run under daemontools
@@ -167,7 +174,12 @@ options. IP alias interfaces (eg "eth1:0") cannot be used with
 .B --interface
 or
 .B --except-interface
-options, use --listen-address instead. 
+options, use --listen-address instead. A simple wildcard, consisting
+of a trailing '*', can be used in 
+.B \--interface 
+and
+.B \--except-interface
+options. 
 .TP
 .B \-I, --except-interface=<interface name>
 Do not listen on the specified interface. Note that the order of
@@ -178,6 +190,16 @@ and
 options does not matter and that 
 .B --except-interface
 options always override the others.
+.TP
+.B --auth-server=<domain>,<interface>|<ip-address>
+Enable DNS authoritative mode for queries arriving at an interface or address. Note that the interface or address
+need not be mentioned in 
+.B --interface
+or 
+.B --listen-address
+configuration, indeed
+.B --auth-server
+will overide these and provide a different DNS service on the specified interface. The <domain> is the "glue record". It should resolve in the global DNS to a A and/or AAAA record which points to the address dnsmasq is listening on.
 .TP 
 .B \-2, --no-dhcp-interface=<interface name>
 Do not provide DHCP or TFTP on the specified interface, but do provide DNS service.
@@ -398,6 +420,12 @@ additional facility that /#/ matches any domain. Thus
 answered from /etc/hosts or DHCP and not sent to an upstream
 nameserver by a more specific --server directive.
 .TP
+.B --ipset=/<domain>/[domain/]<ipset>[,<ipset>]
+Places the resolved IP addresses of queries for the specified domains
+in the specified netfilter ip sets. Domains and subdomains are matched
+in the same way as --address. These ip sets must already exist. See
+ipset(8) for more details.
+.TP
 .B \-m, --mx-host=<mx name>[[,<hostname>],<preference>]
 Return an MX record named <mx name> pointing to the given hostname (if
 given), or
@@ -491,6 +519,22 @@ the name. More than one name may be associated with an interface
 address by repeating the flag; in that case the first instance is used
 for the reverse address-to-name mapping.
 .TP
+.B --synth-domain=<domain>,<address range>[,<prefix>]
+Create artificial A/AAAA and PTR records for an address range. The
+records use the address, with periods (or colons for IPv6) replaced
+with dashes.
+
+An example should make this clearer.
+.B --synth-domain=thekelleys.org.uk,192.168.0.0/24,internal-
+will result in a query for internal-192-168-0-56.thekelleys.org.uk returning
+192.168.0.56 and a reverse query vice versa. The same applies to IPv6,
+but IPv6 addresses may start with '::'
+but DNS labels may not start with '-' so in this case if no prefix is
+configured a zero is added in front of the label. ::1 becomes 0--1.
+
+The address range can be of the form
+<ip address>,<ip address> or <ip address>/<netmask>
+.TP
 .B --add-mac
 Add the MAC address of the requestor to DNS queries which are
 forwarded upstream. This may be used to DNS filtering by the upstream
@@ -528,6 +572,35 @@ If you use the first DNSSEC mode, validating resolvers in clients,
 this option is not required. Dnsmasq always returns all the data
 needed for a client to do validation itself. 
 .TP
+.B --auth-zone=<domain>[,<subnet>[/<prefix length>][,<subnet>[/<prefix length>].....]]
+Define a DNS zone for which dnsmasq acts as authoritative server. Locally defined DNS records which are in the domain
+will be served. A and AAAA records must be in one of the
+specified subnets, or in a subnet corresponding to a constructed DHCP
+range. (This can be overridden with 
+.B constructor-noauth:
+) The subnet(s) are also used to define in-addr.arpa and
+ipv6.arpa domains which are served for reverse-DNS queries. If not
+specified, the prefix length defaults to 24 for IPv4 and 64 for IPv6.
+For IPv4 subnets, the prefix length should be have the value 8, 16 or 24
+unless you are familiar with RFC 2317 and have arranged the
+in-addr.arpa delegation accordingly. 
+.TP
+.B --auth-soa=<serial>[,<hostmaster>[,<refresh>[,<retry>[,<expiry>]]]]
+Specify fields in the SOA record associated with authoritative
+zones. Note that this is optional, all the values are set to sane defaults.
+.TP
+.B --auth-sec-servers=<domain>[,<domain>[,<domain>...]]
+Specify any secondary servers for a zone for which dnsmasq is
+authoritative. These servers must be configured to get zone data from
+dnsmasq by zone transfer, and answer queries for the same
+authoritative zones as dnsmasq.
+.TP
+.B --auth-peer=<ip-address>[,<ip-address>[,<ip-address>...]]
+Specify the addresses of secondary servers which are allowed to
+initiate zone transfer (AXFR) requests for zones for which dnsmasq is
+authoritative. If this option is not given, then AXFR requests will be
+accepted from any secondary. 
+.TP 
 .B --conntrack
 Read the Linux connection track mark associated with incoming DNS
 queries and set the same mark value on upstream traffic used to answer
@@ -538,9 +611,9 @@ compiled in and the kernel must have conntrack support
 included and configured. This option cannot be combined with
 --query-port. 
 .TP
-.B \-F, --dhcp-range=[tag:<tag>[,tag:<tag>],][set:<tag],]<start-addr>[,<end-addr>][,<mode>][,<netmask>[,<broadcast>]][,<lease time>]
+.B \-F, --dhcp-range=[tag:<tag>[,tag:<tag>],][set:<tag>,]<start-addr>[,<end-addr>][,<mode>][,<netmask>[,<broadcast>]][,<lease time>]
 .TP
-.B \-F, --dhcp-range=[tag:<tag>[,tag:<tag>],][set:<tag],]<start-IPv6addr>[,<end-IPv6addr>][,<mode>][,<prefix-len>][,<lease time>]
+.B \-F, --dhcp-range=[tag:<tag>[,tag:<tag>],][set:<tag>,]<start-IPv6addr>[,<end-IPv6addr>|constructor:<interface>][,<mode>][,<prefix-len>][,<lease time>]
 
 Enable the DHCP server. Addresses will be given out from the range
 <start-addr> to <end-addr> and from statically defined addresses given
@@ -572,6 +645,29 @@ given, this defaults to 64. Unlike the IPv4 case, the prefix length is not
 automatically derived from the interface configuration. The mimimum
 size of the prefix length is 64.
 
+IPv6 (only) supports another type of range. In this, the start address and optional end address contain only the network part (ie ::1) and they are followed by
+.B constructor:<interface>.
+This forms a template which describes how to create ranges, based on the addresses assigned to the interface. For instance
+
+.B --dhcp-range=::1,::400,constructor:eth0
+
+will look for addresses of the form <network>::1 or <network>:400 on
+eth0 and then create a range from <network>::1 to <network>::400. If
+the interface is assigned more than one network, then the
+corresponding ranges will be automatically created, and then
+deprecated and finally removed again as the address is deprecated and
+then deleted. The interface name may have a final "*" wildcard. Note
+that just any address on eth0 will not do: the non-prefix part must be
+equal either the start or end address given in the dhcp-range. This is
+to prevent prefixes becoming perpetual if the interface 
+gains a SLAAC address for the prefix when it is advertised by dnsmasq.
+
+There is a variant of the constructor: syntax using the keyword
+.B constructor-noauth.
+See 
+.B --auth-zone
+for an explanation of this.
+
 The optional 
 .B set:<tag> 
 sets an alphanumeric label which marks this network so that
@@ -672,7 +768,13 @@ A single
 .B dhcp-host 
 may contain an IPv4 address or an IPv6 address, or both. IPv6 addresses must be bracketed by square brackets thus:
 .B --dhcp-host=laptop,[1234::56]
-Note that in IPv6 DHCP, the hardware address is not normally available, so a client must be identified by client-id (called client DUID in IPv6-land) or hostname.
+IPv6 addresses may contain only the host-identifier part:
+.B --dhcp-host=laptop,[::56]
+in which case they act as wildcards in constructed dhcp ranges, with
+the appropriate network part inserted. 
+Note that in IPv6 DHCP, the hardware address is not normally
+available, so a client must be identified by client-id (called client
+DUID in IPv6-land) or hostname. 
 
 The special option id:* means "ignore any client-id 
 and use MAC addresses only." This is useful when a client presents a client-id sometimes 
@@ -697,7 +799,7 @@ This is
 useful when there is another DHCP server on the network which should
 be used by some machines.
 
-The set:<tag> contruct sets the tag
+The set:<tag> construct sets the tag
 whenever this dhcp-host directive is in use. This can be used to 
 selectively send DHCP options just for this host. More than one tag
 can be set in a dhcp-host directive (but not in other places where
@@ -912,7 +1014,7 @@ agent ID and one provided by a relay agent, the tag is set.
 (IPv4 only) A normal DHCP relay agent is only used to forward the initial parts of
 a DHCP interaction to the DHCP server. Once a client is configured, it
 communicates directly with the server. This is undesirable if the
-relay agent is addding extra information to the DHCP packets, such as
+relay agent is adding extra information to the DHCP packets, such as
 that used by
 .B dhcp-circuitid
 and
@@ -929,7 +1031,7 @@ relays at those addresses are affected.
 Without a value, set the tag if the client sends a DHCP
 option of the given number or name. When a value is given, set the tag only if
 the option is sent and matches the value. The value may be of the form
-"01:ff:*:02" in which case the value must match (apart from widcards)
+"01:ff:*:02" in which case the value must match (apart from wildcards)
 but the option sent may have unmatched data past the end of the
 value. The value may also be of the same form as in 
 .B dhcp-option
@@ -942,7 +1044,7 @@ will set the tag "efi-ia32" if the the number 6 appears in the list of
 architectures sent by the client in option 93. (See RFC 4578 for
 details.)  If the value is a string, substring matching is used.
 
-The special form with vi-encap:<enterpise number> matches against
+The special form with vi-encap:<enterprise number> matches against
 vendor-identifying vendor classes for the specified enterprise. Please
 see RFC 3925 for more details of these rare and interesting beasts.
 .TP
@@ -970,7 +1072,7 @@ dhcp-host configuration in dnsmasq and the contents of /etc/hosts and
 .TP
 .B --dhcp-generate-names=tag:<tag>[,tag:<tag>]
 (IPv4 only) Generate a name for DHCP clients which do not otherwise have one,
-using the MAC address expressed in hex, seperated by dashes. Note that
+using the MAC address expressed in hex, separated by dashes. Note that
 if a host provides a name, it will be used by preference to this,
 unless 
 .B --dhcp-ignore-names 
@@ -1047,7 +1149,7 @@ timeout has elapsed with no keyboard input, the first available menu
 option will be automatically executed. If the timeout is zero then the first available menu
 item will be executed immediately. If 
 .B pxe-prompt
-is ommitted the system will wait for user input if there are multiple
+is omitted the system will wait for user input if there are multiple
 items in the menu, but boot immediately if
 there is only one. See
 .B pxe-service 
@@ -1071,12 +1173,13 @@ create thousands of leases and use lots of memory in the dnsmasq
 process.
 .TP
 .B \-K, --dhcp-authoritative
-(IPv4 only) Should be set when dnsmasq is definitely the only DHCP server on a network.
-It changes the behaviour from strict RFC compliance so that DHCP requests on
+Should be set when dnsmasq is definitely the only DHCP server on a network.
+For DHCPv4, it changes the behaviour from strict RFC compliance so that DHCP requests on
 unknown leases from unknown hosts are not ignored. This allows new hosts
 to get a lease without a tedious timeout under all circumstances. It also 
 allows dnsmasq to rebuild its lease database without each client needing to 
-reacquire a lease, if the database is lost.
+reacquire a lease, if the database is lost. For DHCPv6 it sets the
+priority in replies to 255 (the maximum) instead of 0 (the minimum).
 .TP
 .B --dhcp-alternate-port[=<server port>[,<client port>]]
 (IPv4 only) Change the ports used for DHCP from the default. If this option is
@@ -1178,6 +1281,9 @@ For IPv4 only:
 
 DNSMASQ_CLIENT_ID if the host provided a client-id.
 
+DNSMASQ_CIRCUIT_ID, DNSMASQ_SUBSCRIBER_ID, DNSMASQ_REMOTE_ID if a
+DHCP relay-agent added any of these options.
+ 
 If the client provides vendor-class, DNSMASQ_VENDOR_CLASS.
 
 For IPv6 only:
@@ -1342,7 +1448,7 @@ In the default mode, dnsmasq inserts the unqualified names of
 DHCP clients into the DNS. For this reason, the names must be unique,
 even if two clients which have the same name are in different
 domains. If a second DHCP client appears which has the same name as an
-existing client, the name is transfered to the new client. If 
+existing client, the name is transferred to the new client. If 
 .B --dhcp-fqdn
 is set, this behaviour changes: the unqualified name is no longer
 put in the DNS, only the qualified name. Two DHCP clients with the
@@ -1596,7 +1702,7 @@ used to allocate the address, one from any matching
 The tag "bootp" is set for BOOTP requests, and a tag whose name is the 
 name of the interface on which the request arrived is also set.
 
-Any configuration lines which includes one or more tag:<tag> contructs
+Any configuration lines which include one or more tag:<tag> constructs
 will only be valid if all that tags are matched in the set derived
 above. Typically this is dhcp-option.
 .B dhcp-option 
@@ -1648,6 +1754,165 @@ parameter in a BOOTP request is used as a tag,
 as is the tag "bootp", allowing some control over the options returned to
 different classes of hosts.
 
+.SH AUTHORITATIVE CONFIGURATION
+.PP 
+Configuring dnsmasq to act as an authoritative DNS server is
+complicated by the fact that it involves configuration of external DNS
+servers to provide delegation. We will walk through three scenarios of
+increasing complexity. Prerequisites for all of these scenarios
+are a globally accessible IP address, an A or AAAA record pointing to that address,
+and an external DNS server capable of doing delegation of the zone in
+question. For the first part of this explanation, we will call the A (or AAAA) record
+for the globally accessible address server.example.com, and the zone
+for which dnsmasq is authoritative our.zone.com.
+
+The simplest configuration consists of two lines of dnsmasq configuration; something like
+
+.nf
+.B auth-server=server.example.com,eth0
+.B auth-zone=our.zone.com,1.2.3.0/24
+.fi
+
+and two records in the external DNS
+
+.nf
+server.example.com       A    192.0.43.10
+our.zone.com            NS    server.example.com
+.fi
+
+eth0 is the external network interface on which dnsmasq is listening,
+and has (globally accessible) address 192.0.43.10. 
+
+Note that the external IP address may well be dynamic (ie assigned
+from an ISP by DHCP or PPP) If so, the A record must be linked to this
+dynamic assignment by one of the usual dynamic-DNS systems.
+
+A more complex, but practically useful configuration has the address
+record for the globally accessible IP address residing in the
+authoritative zone which dnsmasq is serving, typically at the root. Now
+we have
+
+.nf
+.B auth-server=our.zone.com,eth0
+.B auth-zone=our.zone.com,1.2.3.0/24
+.fi
+
+.nf
+our.zone.com             A    1.2.3.4
+our.zone.com            NS    our.zone.com
+.fi
+
+The A record for our.zone.com has now become a glue record, it solves
+the chicken-and-egg problem of finding the IP address of the
+nameserver for our.zone.com when the A record is within that
+zone. Note that this is the only role of this record: as dnsmasq is
+now authoritative from our.zone.com it too must provide this
+record. If the external address is static, this can be done with an
+.B /etc/hosts 
+entry or 
+.B --host-record.
+
+.nf
+.B auth-server=our.zone.com,eth0
+.B host-record=our.zone.com,1.2.3.4
+.B auth-zone=our.zone.com,1.2.3.0/24
+.fi
+
+If the external address is dynamic, the address
+associated with our.zone.com must be derived from the address of the
+relevant interface. This is done using 
+.B interface-name
+Something like:
+
+.nf
+.B auth-server=our.zone.com,eth0
+.B interface-name=our.zone.com,eth0
+.B auth-zone=our.zone.com,1.2.3.0/24
+.fi
+
+Our final configuration builds on that above, but also adds a
+secondary DNS server. This is another DNS server which learns the DNS data
+for the zone by doing zones transfer, and acts as a backup should
+the primary server become inaccessible. The configuration of the
+secondary is beyond the scope of this man-page, but the extra
+configuration of dnsmasq is simple:
+
+.nf
+.B auth-sec-servers=secondary.myisp.com
+.fi
+
+and
+
+.nf
+our.zone.com           NS    secondary.myisp.com
+.fi
+
+Adding auth-sec-servers enables zone transfer in dnsmasq, to allow the
+secondary to collect the DNS data. If you wish to restrict this data
+to particular hosts then
+
+.nf
+.B auth-peer=<IP address of secondary>
+.fi
+
+will do so.
+
+Dnsmasq acts as an authoritative server for  in-addr.arpa and
+ipv6.arpa domains associated with the subnets given in auth-zone
+declarations, so reverse (address to name) lookups can be simply
+configured with a suitable NS record, for instance in this example,
+where we allow 1.2.3.0/24 addresses.
+
+.nf
+ 3.2.1.in-addr.arpa  NS    our.zone.com
+.fi
+
+Note that at present, reverse (in-addr.arpa and ip6.arpa) zones are
+not available in zone transfers, so there is no point arranging
+secondary servers for reverse lookups.
+
+.PP
+When dnsmasq is configured to act as an authoritative server, the
+following data is used to populate the authoritative zone.
+.PP
+.B --mx-host, --srv-host, --dns-rr, --txt-record, --naptr-record
+, as long as the record names are in the authoritative domain.
+.PP
+.B --cname
+as long as the record name is in  the authoritative domain. If the
+target of the CNAME is unqualified, then it  is qualified with the
+authoritative zone name.
+.PP
+IPv4 and IPv6 addresses from /etc/hosts (and 
+.B --addn-hosts
+) and
+.B --host-record
+provided the address falls into one of the subnets specified in the
+.B --auth-zone.
+.PP
+Addresses specified by 
+.B --interface-name.
+In this case, the address is not contrained to a subnet from
+.B --auth-zone. 
+
+.PP
+Addresses of DHCP leases, provided the address falls into one of the subnets specified in the
+.B --auth-zone
+OR a constructed DHCP range. In the default mode, where a DHCP lease
+has an unqualified name, and possibly a qualified name constructed
+using 
+.B --domain
+then the name in the authoritative zone is constructed from the
+unqualified name and the zone's domain. This may or may not equal
+that specified by 
+.B --domain.
+If 
+.B --dhcp-fqdn
+is set, then the fully qualified names associated with DHCP leases are
+used, and must match the zone's domain.
+ 
+
+
 .SH EXIT CODES
 .PP
 0 - Dnsmasq successfully forked into the background, or terminated

man/fr/dnsmasq.8

@@ -6,24 +6,40 @@ Dnsmasq \- Un serveur DHCP et cache DNS poids-plume.
 .I [OPTION]...
 .SH "DESCRIPTION"
 .BR dnsmasq
-est un serveur DHCP et DNS à faible empreinte mémoire. Il offre à la fois les
-services DNS et DHCP pour un réseau local (LAN).
+est un serveur à faible empreinte mémoire faisant DNS, TFTP, PXE, annonces de
+routeurs et DHCP. Il offre à la fois les services DNS et DHCP pour un réseau
+local (LAN).
 .PP
 Dnsmasq accepte les requêtes DNS et y réponds soit en utilisant un petit cache
 local, soit en effectuant une requête à un serveur DNS récursif externe (par
 exemple celui de votre fournisseur d'accès internet). Il charge le contenu du
 fichier /etc/hosts afin que les noms locaux n'apparaissant pas dans les DNS
 globaux soient tout de même résolus, et assure également la résolution de nom
-pour les hôtes présents dans le service DHCP.
+pour les hôtes présents dans le service DHCP. Il peut aussi agir en temps que
+serveur DNS faisant autorité pour un ou plusieurs domaines, permettant à des
+noms locaux d'apparaitre dans le DNS global.
 .PP
 Le serveur DHCP Dnsmasq DHCP supporte les définitions d'adresses statiques et les
-réseaux multiples. Il envoie par défaut un jeu raisonnable de paramètres DHCP, et
-peut être configuré pour envoyer n'importe quel option DHCP.
+réseaux multiples. Il fournit par défaut un jeu raisonnable de paramètres DHCP,
+et peut être configuré pour fournir n'importe quelle option DHCP.
 Il inclut un serveur TFTP sécurisé en lecture seule permettant le démarrage via
-le réseau/PXE de clients DHCP et supporte également le protocole BOOTP.
+le réseau/PXE de clients DHCP et supporte également le protocole BOOTP. Le
+support PXE est complet, et comprend un mode proxy permettant de fournir des
+informations PXE aux clients alors que l'allocation DHCP est effectuée par un
+autre serveur.
 .PP
-Dnsmasq supporte IPv6 et contient un démon minimaliste capable de faire des
-annonces routeurs ("router-advertisements").
+Le serveur DHCPv6 de dnsmasq possède non seulement les mêmes fonctionalités
+que le serveur DHCPv4, mais aussi le support des annonces de routeurs ainsi
+qu'une fonctionalité permettant l'addition de ressources AAAA pour des
+clients utilisant DHCPv4 et la configuration IPv6 sans état (stateless
+autoconfiguration).
+Il inclut le support d'allocations d'adresses (à la fois en DHCPv6 et en
+annonces de routeurs - RA) pour des sous-réseaux dynamiquement délégués via
+une délégation de préfixe DHCPv6.
+.PP
+Dnsmasq est developpé pour de petits systèmes embarqués. It tends à avoir
+l'empreinte mémoire la plus faible possible pour les fonctions supportées,
+et permet d'exclure les fonctions inutiles du binaire compilé.
 .SH OPTIONS
 Notes : Il est possible d'utiliser des options sans leur donner de paramètre.
 Dans ce cas, la fonction correspondante sera désactivée. Par exemple
@@ -76,9 +92,16 @@ l'absence d'enregistrement SOA.
 .TP
 .B --max-ttl=<durée>
 Définie la valeur de TTL maximum qui sera fournie aux clients. La valeur maximum
-de TTL spécifiée sera fournie aux clients en remplacement de la vraie valeur de TTL
-si cette dernière est supérieure. La valeur réelle de TTL est cependant conservée dans
-le cache afin d'éviter de saturer les serveurs DNS en amont.
+de TTL spécifiée sera fournie aux clients en remplacement de la vraie valeur de
+TTL si cette dernière est supérieure. La valeur réelle de TTL est cependant
+conservée dans le cache afin d'éviter de saturer les serveurs DNS en amont.
+.TP
+.B --max-cache-ttl=<durée>
+Définie la valeur de TTL maximum pour les entrées dans le cache
+.TP
+.B --auth-ttl=<durée>
+Définie la valeur de TTL retournée pour les réponses du serveur faisant
+autorité.
 .TP
 .B \-k, --keep-in-foreground
 Ne pas aller en tâche de fond au lancement, mais en dehors de cela, fonctionner
@@ -90,7 +113,10 @@ Mode debug (déverminage) : ne pas aller en tâche de fond, ne pas écrire de
 fichier pid, ne pas changer d'identifiant utilisateur, générer un état complet
 du cache lors de la réception d'un signal SIGUSR1, envoyer les logs sur la
 sortie standard d'erreur ("stderr") de même que dans le syslog, ne pas créer de
-processus fils pour traiter les requêtes TCP.
+processus fils pour traiter les requêtes TCP. A noter que cette option est à
+user pour du déverminage seulement : pour empêcher dnsmasq se fonctionner en
+mode démon en production, utiliser
+.B -k.
 .TP
 .B \-q, --log-queries
 Enregistrer les résultats des requêtes DNS traitées par Dnsmasq dans un fichier
@@ -185,7 +211,11 @@ ni
 .B \--except-interface.
 Utiliser l'option 
 .B --listen-address
-à la place. 
+à la place. Un simple joker, consistant d'un '*' final, peut-être utilisé dans
+les options
+.B \--interface 
+et
+.B \--except-interface
 .TP
 .B \-I, --except-interface=<interface name>
 Ne pas écouter sur l'interface spécifiée. Notez que l'ordre dans lesquelles les
@@ -198,6 +228,21 @@ et
 sont fournies n'importe pas, et que l'option 
 .B --except-interface
 l'emporte toujours sur les autres.
+.TP
+.B --auth-server=<domaine>,<interface>|<addresse IP>
+Active le mode DNS faisant autorité pour les requêtes arrivant sur cette
+interface ou sur cette adresse. Noter que l'interface ou l'adresse n'ont
+pas besoin d'être mentionées ni dans
+.B --interface
+ni dans
+.B --listen-address
+En effet,
+.B --auth-server
+va passer outre ceux-ci et fournir un service DNS différent sur l'interface
+spécifiée. La valeur de <domaine> est l'enregistrement de type "colle"
+("glue record"). Il doit correspondre dans le service DNS global avec un
+enregistrement de type A et/ou AAAA pointant sur l'adresse sur laquelle dnsmasq
+écoute pour le mode DNS faisant autorité.
 .TP 
 .B \-2, --no-dhcp-interface=<nom d'interface>
 Ne pas fournir de service DHCP sur l'interface spécifiée, mais fournir tout de
@@ -312,11 +357,14 @@ Ne pas lire le contenu du fichier /etc/resolv.conf. N'obtenir l'adresse des
 serveurs de nom amont que depuis la ligne de commande ou le fichier de
 configuration de Dnsmasq.
 .TP
-.B \-1, --enable-dbus
+.B \-1, --enable-dbus[=<nom de service>]
 Autoriser la mise à jour de la configuration de Dnsmasq par le biais d'appel de
 méthodes DBus. Il est possible par ce biais de mettre à jour l'adresse de
 serveurs DNS amont (et les domaines correspondants) et de vider le cache. Cette
-option nécessite que Dnsmasq soit compilé avec le support DBus.
+option nécessite que Dnsmasq soit compilé avec le support DBus. Si un nom de
+service est fourni, dnsmasq fourni un service à ce nom, plutôt qu'avec la
+valeur par défaut :
+.B uk.org.thekelleys.dnsmasq
 .TP 
 .B \-o, --strict-order
 Par défaut, Dnsmasq envoie les requêtes à n'importe lequel des serveurs amonts
@@ -455,6 +503,12 @@ n'ayant de réponse ni dans /etc/hosts, ni dans les baux DHCP, et n'étant pas
 transmise à un serveur spécifique par le biais d'une directive
 .B --server.
 .TP
+.B --ipset=/<domaine>/[domaine/]<ipset>[,<ipset>]
+Obtient les adresses IP des domaines spécifiés et les place dans les groupes
+d'IP netfilter (ipset) indiqués. Domaines et sous-domaines sont résolus de la
+même façon que pour --address. Ces groupes d'IP doivent déjà exister. Voir
+ipset(8) pour plus de détails.
+.TP
 .B \-m, --mx-host=<nom de l'hôte>[[,<nom du MX>],<préference>]
 Spécifie un enregistrement de type MX pour <nom de l'hôte> retournant le nom
 donné dans <nom du MX> (s'il est présent), ou sinon le nom spécifié dans
@@ -611,6 +665,34 @@ Si vous utilisez le premier mode DNSSEC, la validation par le resolveur des
 clients, cette option n'est pas requise. Dnsmasq retourne toujours toutes les
 données nécessaires par un client pour effectuer la validation lui-même.
 .TP
+.B --auth-zone=<domaine>[,<sous-réseau>[,<sous-réseau>.....]]
+Définie une zone DNS pour laquelle dnsmasq agit en temps que serveur faisant
+autorité. Les enregistrements DNS définis localement et correspondant à ce
+domaine seront fournis, à ceci près que les enregistrements A et AAAA doivent
+se situer dans l'un des sous-réseaux précisés si ceux-ci sont définis, ou dans
+un réseau correspondant à une plage DHCP. Le ou les sous-réseaux sont également
+utilisé pour définir les domaines in-addr.arpa et ipv6.arpa servant à
+l'interrogation DNS inverse. Dans le cas d'IPv4, la longueur du masque de
+réseau doit être de 8, 16 ou 24.
+.TP
+.B --auth-soa=<numéro de série>[,<mainteneur de zone (hostmaster)>[,<rafraichissement>[,<nombre de réessais>[,<expiration>]]]]
+Spécifie les champs de l'enregistrement de type SOA (Start Of Authority)
+associé à une zone pour laquelle le serveur fait autorité. A noter que cela est
+optionnel, les valeurs par défaut devant convenir à la majorité des cas.
+.TP
+.B --auth-sec-servers=<domaine>[,<domaine>[,<domaine>...]]
+Spécifie un ou plusieurs serveur de nom secondaires pour une zone pour
+laquelle dnsmasq fait autorité. Ces serveurs doivent-être configurés pour
+récupérer auprès de dnsmasq les informations liées à la zone au travers d'un
+transfert de zone, et répondre aux requêtes pour toutes les zones pour
+lesquelles dnsmasq fait autorité.
+.TP
+.B --auth-peer=<adresse IP>[,<adresse IP>[,<adresse IP>...]]
+Spécifie la ou les adresses de serveurs secondaires autorisés à initier des
+requêtes de transfert de zone (AXFR) pour les zones pour lesquelles
+dnsmasq fait autorité. Si cette option n'est pas fournie, les requêtes AXFR
+seront acceptées pour tous les serveurs secondaires.
+.TP 
 .B --conntrack
 Lis le marquage de suivi de connexion Linux associé aux requêtes DNS entrantes
 et positionne la même marque au trafic amont utilisé pour répondre à ces
@@ -623,7 +705,8 @@ configuré pour cela. Cette option ne peut pas être combinée avec
 .TP
 .B \-F, --dhcp-range=[tag:<label>[,tag:<label>],][set:<label>],]<adresse de début>[,<adresse de fin>][,<mode>][,<masque de réseau>[,<broadcast>]][,<durée de bail>]
 .TP
-.B \-F, --dhcp-range=[tag:<label>[,tag:<label>],][set:<label>],]<addresse IPv6 de début>[,<adresse IPv6 de fin>][,<mode>][,<longueur de préfixe>][,<durée de bail>]
+.B \-F, --dhcp-range=[tag:<label>[,tag:<label>],][set:<label>],]<addresse IPv6 de début>[,<adresse IPv6 de fin>|constructor:<interface>][,<mode>][,<longueur de préfixe>][,<durée de bail>]
+
 Active le serveur DHCP. Les adresses seront données dans la plage comprise entre
 <adresse de début> et <adresse de fin> et à partir des adresses définies
 statiquement dans l'option
@@ -663,6 +746,22 @@ d'IPv4, la longueur de préfixe n'est pas automatiquement déduite de la
 configuration de l'interface. La taille minimale pour la longueur de préfixe
 est 64.
 
+Pour IPv6 (et IPv6 uniquement), il est possible de définir les plages d'une
+autre façon. Dans ce cas, l'adresse de départ et l'adresse de fin optionnelle
+contiennent uniquement la partie réseau (par exemple ::1) et sont suivies par
+.B constructor:<interface>.
+Cela forme un modèle décrivant comment construire la plage, à partir des
+adresses assignées à l'interface. Par exemple
+
+.B --dhcp-range=::1,::400,constructor:eth0
+
+provoque la recherche d'adresses de la forme <réseau>::1 sur eth0 et crée une
+plage allant de <réseau>::1 à <réseau>:400. Si une interface est assignée à
+plus d'un réseau, les plages correspondantes seront automatiquement créées,
+rendues obsolètes puis supprimées lorsque l'adress est rendue obsolète puis
+supprimée. Le nom de l'interface peut être spécifié avec un caractère joker '*'
+final.
+
 L'identifiant de label optionnel
 .B set:<label>
 fournie une étiquette alphanumérique qui identifie ce réseau, afin de permettre
@@ -677,7 +776,13 @@ Le mot clef optionnel <mode> peut être égal à
 spécifié, mais de ne pas activer l'allocation dynamique d'adresses IP : Seuls
 les hôtes possédant des adresses IP statiques fournies via 
 .B dhcp-host
-ou présentes dans le fichier /etc/ethers seront alors servis par le DHCP.
+ou présentes dans le fichier /etc/ethers seront alors servis par le DHCP. Il est
+possible d'activer un mode "fourre-tout" en définissant un réseau statique
+comportant uniquement des zéros, c'est à dire :
+.B --dhcp=range=::,static
+Cela permet de retourner des réponses à tous les paquets de type
+Information-request (requête d'information) en mode DHCPv6 sans état sur le
+sous-réseau configuré. 
 
 Pour IPv4, le <mode> peut est égal à
 .B proxy
@@ -762,6 +867,10 @@ Un seul
 peut contenir une adresse IPv4, une adresse IPv6, ou les deux en même temps.
 Les adresses IPv6 doivent-être mises entre crochets comme suit :
 .B --dhcp-host=laptop,[1234::56]
+Les adresses IPv6 peuvent ne contenir que la partie identifiant de client :
+.B --dhcp-host=laptop,[::56]
+Dans ce cas, lorsque des plages dhcp sont définies automatiquement par le biais
+de constructeurs, la partie réseau correspondante est rajoutée à l'adresse.
 A noter que pour le DHCP IPv6, l'adresse matérielle n'est en principe pas
 disponible, aussi un client doit-être identifié par un identifiant de client
 (appellé "DUID client") ou un nom d'hôte.
@@ -1204,14 +1313,16 @@ créant des milliers de baux et utilisant beaucoup de mémoire dans le processus
 Dnsmasq.
 .TP
 .B \-K, --dhcp-authoritative
-(IPv4 seulement) Cette option doit être donnée lorsque Dnsmasq est le seul
-serveur DHCP sur le réseau. Cela change le comportement par défaut qui est
+Doit être spécifié lorsque dnsmasq est réellement le seul serveur DHCP
+sur le réseau. Pour DHCPv4, cela change le comportement par défaut qui est
 celui d'un strict respect des RFC, afin que les requêtes DHCP pour des baux
 inconnus par des hôtes inconnus ne soient pas ignorées. Cela permet à de
 nouveaux hôtes d'obtenir des baux sans tenir compte de fastidieuses
 temporisations ("timeout"). Cela permet également à Dnsmasq de reconstruire
 sa base de données contenant les baux sans que les clients n'aient besoin de
 redemander un bail, si celle-ci est perdue.
+Dans le cas de DHCPv6, cela positionne la priorité des réponses à 255 (le
+maximum) au lieu de 0 (le minimum).
 .TP
 .B --dhcp-alternate-port[=<port serveur>[,<port client>]]
 (IPv4 seulement) Change les ports utilisés par défaut pour le DHCP. Si cette
@@ -1319,6 +1430,9 @@ Pour IPv4 seulement :
 
 DNSMASQ_CLIENT_ID, si l'hôte a fourni un identifiant de client.
 
+DNSMASQ_CIRCUIT_ID, DNSMASQ_SUBSCRIBER_ID, DNSMASQ_REMOTE_ID si un relai DHCP a
+rajouté l'une de ces options.
+
 Si le client fournit une information de classe de vendeur, DNSMASQ_VENDOR_CLASS.
 
 Pour IPv6 seulement :
@@ -1847,6 +1961,167 @@ supprime la nécessité des associations statiques). Le paramètre
 que le label "bootp", permettant un certain contrôle sur les options retournées
 aux différentes classes d'hôtes.
 
+
+.SH CONFIGURATION EN TEMPS QUE SERVEUR FAISANT AUTORITÉ
+.PP 
+Configurer dnsmasq pour agir en temps que serveur DNS faisant autorité est
+compliqué par le fait que cela implique la configuration de serveurs DNS
+externes pour mettre en place la délégation. Seront présentés ci-dessous trois
+scénarios de complexité croissante. Le pré-requis pour chacun de ces scénarios
+est l'existence d'une adresse IP globalement disponible, d'un enregistrement de
+type A ou AAAA pointant vers cette adresse, ainsi que d'un serveur DNS externe
+capable d'effectuer la délégation de la zone en question. Pour la première
+partie de ces explications, nous allons appeller serveur.exemple.com
+l'enregistrement A (ou AAAA) de l'adresse globalement accessible, et
+notre.zone.com la zone pour laquelle dnsmasq fait autorité.
+
+La configuration la plus simple consiste en deux lignes de configuration,
+sous la forme :
+.nf
+.B auth-server=serveur.exemple.com,eth0
+.B auth-zone=notre.zone.com,1.2.3.0/24
+.fi
+
+ainsi que deux enregistrements dans le DNS externe :
+
+.nf
+serveur.exemple.com       A    192.0.43.10
+notre.zone.com            NS    serveur.exemple.com
+.fi
+
+eth0 est l'interface réseau externe sur laquelle dnsmasq écoute, dont l'adresse
+IP (globalement accessible) est 192.0.43.10. 
+
+A noter que l'adresse IP externe peut parfaitement être dynamique (par exemple
+attribuée par un FAI via DHCP ou PPP). Dans ce cas, l'enregistrement de type A
+doit être lié à cet enregistrement dynamique par l'une ou l'autre des techniques
+habituelles de système DNS dynamique.
+
+Un exemple plus complexe mais en pratique plus utile correspond au cas où
+l'adresse IP globalement accessible se trouve dans la zone pour laquelle
+dnsmasq fait autorité, le plus souvent à la racine. Dans ce cas nous avons :
+
+.nf
+.B auth-server=notre.zone.com,eth0
+.B auth-zone=notre.zone.com,1.2.3.0/24
+.fi
+
+.nf
+notre.zone.com             A    1.2.3.4
+notre.zone.com            NS    our.zone.com
+.fi
+
+L'enregistrement A pour notre.zone.com est dorénavant un enregistrement "colle"
+qui résoud le problème de poule et d'oeuf consistant à trouver l'adresse IP
+du serveur de nom pour notre.zone.com lorsque l'enregistrement se trouve dans
+la zone en question. Il s'agit du seul rôle de cet enregistrement : comme dnsmasq
+fait désormais autorité pour notre.zone.com, il doit également fournir cet
+enregistrement. Si l'adresse externe est statique, cela peut-être réalisé par
+le biais d'une entrée dans
+.B /etc/hosts 
+ou via un
+.B --host-record.
+
+.nf
+.B auth-server=notre.zone.com,eth0
+.B host-record=notre.zone.com,1.2.3.4
+.B auth-zone=notre.zone.com,1.2.3.0/24
+.fi
+
+Si l'adresse externe est dynamique, l'adresse associée à notre.zone.com doit
+être dérivée de l'interface correspondante. Cela peut être fait en utilisant
+.B interface-name
+Sous la forme :
+
+.nf
+.B auth-server=notre.zone.com,eth0
+.B interface-name=notre.zone.com,eth0
+.B auth-zone=notre.zone.com,1.2.3.0/24
+.fi
+
+La configuration finale rajoute à cette base un serveur DNS secondaire. Il
+s'agit d'un autre serveur DNS qui apprend les données DNS de la zone en
+effectuant un transfert de zone, et qui joue le rôle de serveur de secours
+au cas où le serveur principal devenait inaccessible. La configuration
+de ce serveur secondaire sort du cadre de cette page de manuel. Les éléments
+de configuration à rajouter dans dnsmasq sont les simples :
+
+.nf
+.B auth-sec-servers=secondaire.monfai.com
+.fi
+
+et
+
+.nf
+notre.zone.com           NS    secondaire.monfai.com
+.fi
+
+L'addition d'une option auth-sec-servers active les transferts de zone dans
+dnsmasq, ce qui permet au serveur secondaire de venir collecter les données
+DNS. Si vous souhaitez restreindre l'accès à ces données à des hôtes
+spécifiques, vous pouvez le faire via :
+
+.nf
+.B auth-peer=<adresse IP du serveur secondaire>
+.fi
+
+Dnsmasq joue le rôle de serveur faisant autorité pour les domaines in-addr.arpa
+et ipv6.arpa associés aux sous-réseaux définis dans la déclaration de zone
+auth-zone, ce qui fait que les requêtes DNS inversées (de l'adresse vers
+le nom) peuvent-simplement être configurées avec un enregistrement NS
+adéquat. Par exemple, comme nous définissons plus haut les adresses
+1.2.3.0/24 :
+.nf
+ 3.2.1.in-addr.arpa  NS    notre.zone.com
+.fi
+
+Veuillez noter que pour l'instant, les zones inverses ne sont pas
+disponibles dans les transferts de zone, donc il est inutile de configurer
+de serveur secondaire pour la résolution inverse.
+
+.PP
+Lorsque dnsmasq est configuré en temps que serveur faisant autorité,
+les données suivantes sont utilisées pour peupler la zone considérée :
+.PP
+.B --mx-host, --srv-host, --dns-rr, --txt-record, --naptr-record
+, pour autant que les noms des enregistrements se trouvent dans la zone en
+question.
+.PP
+.B --cname
+pour peu que le nom soit dans le domaine. Si la cible du CNAME n'est
+pas pleinement qualifiée, alors elle est qualifiée avec le nom de la
+zone pour laquelle le serveur fait autorité.
+.PP
+Les adresses IPv4 et IPv6 extraites de /etc/hosts (et
+.B --addn-hosts
+) ainsi que les options
+.B --host-record
+fournissant des adresses situées dans l'un des sous-réseaux spécifiés dans 
+.B --auth-zone.
+.PP
+Adresses spécifiées par
+.B --interface-name.
+Dans ce cas, l'adresse n'est pas limitée à l'un des sous-réseaux donné dans
+.B --auth-zone. 
+
+.PP
+Les adresses de baux DHCP, si l'adresse est située dans l'un des sous-réseaux de
+.B --auth-zone
+OU dans une plage DHCP construite. Dans le mode par défaut, où le bail
+DHCP a un nom non qualifié, et éventuellement pour un nom qualifié construit
+via
+.B --domain
+, alors le nom dans la zone faisant autorité est construit à partir du nom
+non qualifié et du nom de domaine de la zone. Cela peut on non être égal
+celui fourni par
+.B --domain.
+Si l'option
+.B --dhcp-fqdn
+est fournie, alors les noms pleinemenet qualifiés associés aux baux DHCP
+sont utilisés, dès lors qu'ils correspondent au nom de domaine associé
+à la zone.
+
+
 .SH CODES DE SORTIE
 .PP
 0 - Dnsmasq s'est correctement lancé en tâche de fond, ou alors s'est

src/auth.c

@@ -0,0 +1,801 @@
+/* dnsmasq is Copyright (c) 2000-2013 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"
+
+#ifdef HAVE_AUTH
+
+static struct subnet *filter_zone(struct auth_zone *zone, int flag, struct all_addr *addr_u)
+{
+  struct subnet *subnet;
+
+  for (subnet = zone->subnet; subnet; subnet = subnet->next)
+    {
+      if (subnet->is6 && (flag & F_IPV4))
+	continue;
+
+      if (!subnet->is6)
+	{
+	  struct in_addr addr = addr_u->addr.addr4;
+	  struct in_addr mask;
+	  
+	  mask.s_addr = htonl(~((1 << (32 - subnet->prefixlen)) - 1));
+	  
+	  if  (is_same_net(addr, subnet->addr4, mask))
+	    return subnet;
+	}
+#ifdef HAVE_IPV6
+      else if (is_same_net6(&(addr_u->addr.addr6), &subnet->addr6, subnet->prefixlen))
+	return subnet;
+#endif
+
+    }
+  return NULL;
+}
+
+static int filter_constructed_dhcp(struct auth_zone *zone, int flag, struct all_addr *addr_u)
+{
+#ifdef HAVE_DHCP6
+  struct dhcp_context *context;
+
+  if (flag & F_IPV6)
+    for (context = daemon->dhcp6; context; context = context->next)
+      if ((context->flags & CONTEXT_CONSTRUCTED) &&
+	  !(context->flags & CONTEXT_NOAUTH) &&
+	  is_same_net6(&(addr_u->addr.addr6), &context->start6, context->prefix))
+	return 1;
+#endif
+  
+  return filter_zone(zone, flag, addr_u) != NULL;
+}
+
+static int in_zone(struct auth_zone *zone, char *name, char **cut)
+{
+  size_t namelen = strlen(name);
+  size_t domainlen = strlen(zone->domain);
+
+  if (cut)
+    *cut = NULL;
+  
+  if (namelen >= domainlen && 
+      hostname_isequal(zone->domain, &name[namelen - domainlen]))
+    {
+      
+      if (namelen == domainlen)
+	return 1;
+      
+      if (name[namelen - domainlen - 1] == '.')
+	{
+	  if (cut)
+	    *cut = &name[namelen - domainlen - 1]; 
+	  return 1;
+	}
+    }
+
+  return 0;
+}
+
+
+size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t now, union mysockaddr *peer_addr) 
+{
+  char *name = daemon->namebuff;
+  unsigned char *p, *ansp;
+  int qtype, qclass;
+  int nameoffset, axfroffset = 0;
+  int q, anscount = 0, authcount = 0;
+  struct crec *crecp;
+  int  auth = 1, trunc = 0, nxdomain = 1, soa = 0, ns = 0, axfr = 0;
+  struct auth_zone *zone = NULL;
+  struct subnet *subnet = NULL;
+  char *cut;
+  struct mx_srv_record *rec, *move, **up;
+  struct txt_record *txt;
+  struct interface_name *intr;
+  struct naptr *na;
+  struct all_addr addr;
+  struct cname *a;
+  
+  if (ntohs(header->qdcount) == 0 || OPCODE(header) != QUERY )
+    return 0;
+  
+  /* determine end of question section (we put answers there) */
+  if (!(ansp = skip_questions(header, qlen)))
+    return 0; /* bad packet */
+  
+  /* now process each question, answers go in RRs after the question */
+  p = (unsigned char *)(header+1);
+
+  for (q = ntohs(header->qdcount); q != 0; q--)
+    {
+      unsigned short flag = 0;
+      int found = 0;
+  
+      /* save pointer to name for copying into answers */
+      nameoffset = p - (unsigned char *)header;
+
+      /* now extract name as .-concatenated string into name */
+      if (!extract_name(header, qlen, &p, name, 1, 4))
+	return 0; /* bad packet */
+ 
+      GETSHORT(qtype, p); 
+      GETSHORT(qclass, p);
+      
+      if (qclass != C_IN)
+	{
+	  auth = 0;
+	  continue;
+	}
+
+      if (qtype == T_PTR)
+	{
+	  if (!(flag = in_arpa_name_2_addr(name, &addr)))
+	    continue;
+
+	  for (zone = daemon->auth_zones; zone; zone = zone->next)
+	    if ((subnet = filter_zone(zone, flag, &addr)))
+	      break;
+
+	  if (!zone)
+	    {
+	      auth = 0;
+	      continue;
+	    }
+	  
+	  intr = NULL;
+
+	  if (flag == F_IPV4)
+	    for (intr = daemon->int_names; intr; intr = intr->next)
+	      {
+		struct addrlist *addrlist;
+		
+		for (addrlist = intr->addr4; addrlist; addrlist = addrlist->next)
+		  if (addr.addr.addr4.s_addr == addrlist->addr.addr.addr4.s_addr)
+		    break;
+		
+		if (addrlist)
+		  break;
+		else
+		  while (intr->next && strcmp(intr->intr, intr->next->intr) == 0)
+		    intr = intr->next;
+	      }
+#ifdef HAVE_IPV6
+	  else if (flag == F_IPV6)
+	    for (intr = daemon->int_names; intr; intr = intr->next)
+	      {
+		struct addrlist *addrlist;
+		
+		for (addrlist = intr->addr6; addrlist; addrlist = addrlist->next)
+		  if (IN6_ARE_ADDR_EQUAL(&addr.addr.addr6, &addrlist->addr.addr.addr6))
+		    break;
+		
+		if (addrlist)
+		  break;
+		else
+		  while (intr->next && strcmp(intr->intr, intr->next->intr) == 0)
+		    intr = intr->next;
+	      }
+#endif
+	  
+	  if (intr)
+	    {
+	      if (in_zone(zone, intr->name, NULL))
+		{	
+		  found = 1;
+		  log_query(flag| F_REVERSE | F_CONFIG, intr->name, &addr, NULL);
+		  if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+					  daemon->auth_ttl, NULL,
+					  T_PTR, C_IN, "d", intr->name))
+		    anscount++;
+		}
+	    }
+	  
+	  if ((crecp = cache_find_by_addr(NULL, &addr, now, flag)))
+	    do { 
+	      strcpy(name, cache_get_name(crecp));
+	      
+	      if (crecp->flags & F_DHCP && !option_bool(OPT_DHCP_FQDN))
+		{
+		  char *p = strchr(name, '.');
+		  if (p)
+		    *p = 0; /* must be bare name */
+		  
+		  /* add  external domain */
+		  strcat(name, ".");
+		  strcat(name, zone->domain);
+		  log_query(flag | F_DHCP | F_REVERSE, name, &addr, record_source(crecp->uid));
+		  found = 1;
+		  if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+					  daemon->auth_ttl, NULL,
+					  T_PTR, C_IN, "d", name))
+		    anscount++;
+		}
+	      else if (crecp->flags & (F_DHCP | F_HOSTS) && in_zone(zone, name, NULL))
+		{
+		  log_query(crecp->flags & ~F_FORWARD, name, &addr, record_source(crecp->uid));
+		  found = 1;
+		  if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+					  daemon->auth_ttl, NULL,
+					  T_PTR, C_IN, "d", name))
+		    anscount++;
+		}
+	      else
+		continue;
+		    
+	    } while ((crecp = cache_find_by_addr(crecp, &addr, now, flag)));
+
+	  if (!found)
+	    log_query(flag | F_NEG | F_NXDOMAIN | F_REVERSE | F_AUTH, NULL, &addr, NULL);
+
+	  continue;
+	}
+      
+    cname_restart:
+      for (zone = daemon->auth_zones; zone; zone = zone->next)
+	if (in_zone(zone, name, &cut))
+	  break;
+      
+      if (!zone)
+	{
+	  auth = 0;
+	  continue;
+	}
+
+      for (rec = daemon->mxnames; rec; rec = rec->next)
+	if (!rec->issrv && hostname_isequal(name, rec->name))
+	  {
+	    nxdomain = 0;
+	         
+	    if (qtype == T_MX)
+	      {
+		found = 1;
+		log_query(F_CONFIG | F_RRNAME, name, NULL, "<MX>"); 
+		if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, daemon->auth_ttl,
+					NULL, T_MX, C_IN, "sd", rec->weight, rec->target))
+		  anscount++;
+	      }
+	  }
+      
+      for (move = NULL, up = &daemon->mxnames, rec = daemon->mxnames; rec; rec = rec->next)
+	if (rec->issrv && hostname_isequal(name, rec->name))
+	  {
+	    nxdomain = 0;
+	    
+	    if (qtype == T_SRV)
+	      {
+		found = 1;
+		log_query(F_CONFIG | F_RRNAME, name, NULL, "<SRV>"); 
+		if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, daemon->auth_ttl,
+					NULL, T_SRV, C_IN, "sssd", 
+					rec->priority, rec->weight, rec->srvport, rec->target))
+
+		  anscount++;
+	      } 
+	    
+	    /* unlink first SRV record found */
+	    if (!move)
+	      {
+		move = rec;
+		*up = rec->next;
+	      }
+	    else
+	      up = &rec->next;      
+	  }
+	else
+	  up = &rec->next;
+	  
+      /* put first SRV record back at the end. */
+      if (move)
+	{
+	  *up = move;
+	  move->next = NULL;
+	}
+
+      for (txt = daemon->rr; txt; txt = txt->next)
+	if (hostname_isequal(name, txt->name))
+	  {
+	    nxdomain = 0;
+	    if (txt->class == qtype)
+	      {
+		found = 1;
+		log_query(F_CONFIG | F_RRNAME, name, NULL, "<RR>"); 
+		if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, daemon->auth_ttl,
+					NULL, txt->class, C_IN, "t", txt->len, txt->txt))
+		  anscount++;
+	      }
+	  }
+      
+      for (txt = daemon->txt; txt; txt = txt->next)
+	if (txt->class == C_IN && hostname_isequal(name, txt->name))
+	  {
+	    nxdomain = 0;
+	    if (qtype == T_TXT)
+	      {
+		found = 1;
+		log_query(F_CONFIG | F_RRNAME, name, NULL, "<TXT>"); 
+		if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, daemon->auth_ttl,
+					NULL, T_TXT, C_IN, "t", txt->len, txt->txt))
+		  anscount++;
+	      }
+	  }
+
+       for (na = daemon->naptr; na; na = na->next)
+	 if (hostname_isequal(name, na->name))
+	   {
+	     nxdomain = 0;
+	     if (qtype == T_NAPTR)
+	       {
+		 found = 1;
+		 log_query(F_CONFIG | F_RRNAME, name, NULL, "<NAPTR>");
+		 if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, daemon->auth_ttl, 
+					 NULL, T_NAPTR, C_IN, "sszzzd", 
+					 na->order, na->pref, na->flags, na->services, na->regexp, na->replace))
+			  anscount++;
+	       }
+	   }
+    
+       if (qtype == T_A)
+	 flag = F_IPV4;
+       
+#ifdef HAVE_IPV6
+       if (qtype == T_AAAA)
+	 flag = F_IPV6;
+#endif
+       
+       for (intr = daemon->int_names; intr; intr = intr->next)
+	 if (hostname_isequal(name, intr->name))
+	   {
+	     struct addrlist *addrlist;
+
+	     addrlist = intr->addr4;
+#ifdef HAVE_IPV6
+	     if (qtype == T_AAAA)
+	       addrlist = intr->addr6;
+#endif	
+	     nxdomain = 0;
+	
+	     for (; addrlist; addrlist = addrlist->next)  
+	       if (filter_constructed_dhcp(zone, flag, &addrlist->addr))
+		 {
+		   found = 1;
+		   log_query(F_FORWARD | F_CONFIG | flag, name, &addrlist->addr, NULL);
+		   if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+					   daemon->auth_ttl, NULL, qtype, C_IN, 
+					   qtype == T_A ? "4" : "6", &addrlist->addr))
+		     anscount++;
+		 }
+	   }
+       
+       for (a = daemon->cnames; a; a = a->next)
+	 if (hostname_isequal(name, a->alias) )
+	   {
+	     log_query(F_CONFIG | F_CNAME, name, NULL, NULL);
+	     strcpy(name, a->target);
+	     if (!strchr(name, '.'))
+	       {
+		 strcat(name, ".");
+		 strcat(name, zone->domain);
+	       }
+	     found = 1;
+	     if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+				     daemon->auth_ttl, NULL,
+				     T_CNAME, C_IN, "d", name))
+	       anscount++;
+	     
+	     goto cname_restart;
+	   }
+
+      if (!cut)
+	{
+	  nxdomain = 0;
+	  
+	  if (qtype == T_SOA)
+	    {
+	      soa = 1; /* inhibits auth section */
+	      found = 1;
+	      log_query(F_RRNAME | F_AUTH, zone->domain, NULL, "<SOA>");
+	    }
+      	  else if (qtype == T_AXFR)
+	    {
+	      struct iname *peers;
+	      
+	      if (peer_addr->sa.sa_family == AF_INET)
+		peer_addr->in.sin_port = 0;
+#ifdef HAVE_IPV6
+	      else
+		peer_addr->in6.sin6_port = 0; 
+#endif
+	      
+	      for (peers = daemon->auth_peers; peers; peers = peers->next)
+		if (sockaddr_isequal(peer_addr, &peers->addr))
+		  break;
+	      
+	      /* Refuse all AXFR unless --auth-sec-servers is set */
+	      if ((!peers && daemon->auth_peers) || !daemon->secondary_forward_server)
+		{
+		  if (peer_addr->sa.sa_family == AF_INET)
+		    inet_ntop(AF_INET, &peer_addr->in.sin_addr, daemon->addrbuff, ADDRSTRLEN);
+#ifdef HAVE_IPV6
+		  else
+		    inet_ntop(AF_INET6, &peer_addr->in6.sin6_addr, daemon->addrbuff, ADDRSTRLEN); 
+#endif
+		  
+		  my_syslog(LOG_WARNING, _("ignoring zone transfer request from %s"), daemon->addrbuff);
+		  return 0;
+		}
+	       	      
+	      soa = 1; /* inhibits auth section */
+	      ns = 1; /* ensure we include NS records! */
+	      axfr = 1;
+	      found = 1;
+	      axfroffset = nameoffset;
+	      log_query(F_RRNAME | F_AUTH, zone->domain, NULL, "<AXFR>");
+	    }
+      	  else if (qtype == T_NS)
+	    {
+	      ns = 1; /* inhibits auth section */
+	      found = 1;
+	      log_query(F_RRNAME | F_AUTH, zone->domain, NULL, "<NS>"); 
+	    }
+	}
+      
+      if (!option_bool(OPT_DHCP_FQDN) && cut)
+	{	  
+	  *cut = 0; /* remove domain part */
+	  
+	  if (!strchr(name, '.') && (crecp = cache_find_by_name(NULL, name, now, F_IPV4 | F_IPV6)))
+	    {
+	      if (crecp->flags & F_DHCP)
+		do
+		  { 
+		    nxdomain = 0;
+		    if ((crecp->flags & flag) && 
+			(filter_constructed_dhcp(zone, flag, &(crecp->addr.addr))))
+		      {
+			*cut = '.'; /* restore domain part */
+			log_query(crecp->flags, name, &crecp->addr.addr, record_source(crecp->uid));
+			*cut  = 0; /* remove domain part */
+			found = 1;
+			if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+						daemon->auth_ttl, NULL, qtype, C_IN, 
+						qtype == T_A ? "4" : "6", &crecp->addr))
+			  anscount++;
+		      }
+		  } while ((crecp = cache_find_by_name(crecp, name, now,  F_IPV4 | F_IPV6)));
+	    }
+       	  
+	  *cut = '.'; /* restore domain part */	    
+	}
+      
+      if ((crecp = cache_find_by_name(NULL, name, now, F_IPV4 | F_IPV6)))
+	{
+	  if ((crecp->flags & F_HOSTS) || (((crecp->flags & F_DHCP) && option_bool(OPT_DHCP_FQDN))))
+	    do
+	      { 
+		 nxdomain = 0;
+		 if ((crecp->flags & flag) && filter_constructed_dhcp(zone, flag, &(crecp->addr.addr)))
+		   {
+		     log_query(crecp->flags, name, &crecp->addr.addr, record_source(crecp->uid));
+		     found = 1;
+		     if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+					     daemon->auth_ttl, NULL, qtype, C_IN, 
+					     qtype == T_A ? "4" : "6", &crecp->addr))
+		       anscount++;
+		   }
+	      } while ((crecp = cache_find_by_name(crecp, name, now, F_IPV4 | F_IPV6)));
+	}
+      
+      if (!found)
+	log_query(flag | F_NEG | (nxdomain ? F_NXDOMAIN : 0) | F_FORWARD | F_AUTH, name, NULL, NULL);
+      
+    }
+  
+  /* Add auth section */
+  if (auth && zone)
+    {
+      char *authname;
+      int newoffset, offset = 0;
+
+      if (!subnet)
+	authname = zone->domain;
+      else
+	{
+	  /* handle NS and SOA for PTR records */
+	  
+	  authname = name;
+
+	  if (!subnet->is6)
+	    {
+	      in_addr_t a = ntohl(subnet->addr4.s_addr) >> 8;
+	      char *p = name;
+	      
+	      if (subnet->prefixlen >= 24)
+		p += sprintf(p, "%d.", a & 0xff);
+	      a = a >> 8;
+	      if (subnet->prefixlen >= 16 )
+		p += sprintf(p, "%d.", a & 0xff);
+	      a = a >> 8;
+	      p += sprintf(p, "%d.in-addr.arpa", a & 0xff);
+	      
+	    }
+#ifdef HAVE_IPV6
+	  else
+	    {
+	      char *p = name;
+	      int i;
+	      
+	      for (i = subnet->prefixlen-1; i >= 0; i -= 4)
+		{ 
+		  int dig = ((unsigned char *)&subnet->addr6)[i>>3];
+		  p += sprintf(p, "%.1x.", (i>>2) & 1 ? dig & 15 : dig >> 4);
+		}
+	      p += sprintf(p, "ip6.arpa");
+	      
+	    }
+#endif
+	}
+      
+      /* handle NS and SOA in auth section or for explicit queries */
+       newoffset = ansp - (unsigned char *)header;
+       if (((anscount == 0 && !ns) || soa) &&
+	  add_resource_record(header, limit, &trunc, 0, &ansp, 
+			      daemon->auth_ttl, NULL, T_SOA, C_IN, "ddlllll",
+			      authname, daemon->authserver,  daemon->hostmaster,
+			      daemon->soa_sn, daemon->soa_refresh, 
+			      daemon->soa_retry, daemon->soa_expiry, 
+			      daemon->auth_ttl))
+	{
+	  offset = newoffset;
+	  if (soa)
+	    anscount++;
+	  else
+	    authcount++;
+	}
+      
+      if (anscount != 0 || ns)
+	{
+	  struct name_list *secondary;
+	  
+	  newoffset = ansp - (unsigned char *)header;
+	  if (add_resource_record(header, limit, &trunc, -offset, &ansp, 
+				  daemon->auth_ttl, NULL, T_NS, C_IN, "d", offset == 0 ? authname : NULL, daemon->authserver))
+	    {
+	      if (offset == 0) 
+		offset = newoffset;
+	      if (ns) 
+		anscount++;
+	      else
+		authcount++;
+	    }
+
+	  if (!subnet)
+	    for (secondary = daemon->secondary_forward_server; secondary; secondary = secondary->next)
+	      if (add_resource_record(header, limit, &trunc, offset, &ansp, 
+				      daemon->auth_ttl, NULL, T_NS, C_IN, "d", secondary->name))
+		{
+		  if (ns) 
+		    anscount++;
+		  else
+		    authcount++;
+		}
+	}
+      
+      if (axfr)
+	{
+	  for (rec = daemon->mxnames; rec; rec = rec->next)
+	    if (in_zone(zone, rec->name, &cut))
+	      {
+		if (cut)
+		   *cut = 0;
+
+		if (rec->issrv)
+		  {
+		    if (add_resource_record(header, limit, &trunc, -axfroffset, &ansp, daemon->auth_ttl,
+					    NULL, T_SRV, C_IN, "sssd", cut ? rec->name : NULL,
+					    rec->priority, rec->weight, rec->srvport, rec->target))
+		      
+		      anscount++;
+		  }
+		else
+		  {
+		    if (add_resource_record(header, limit, &trunc, -axfroffset, &ansp, daemon->auth_ttl,
+					    NULL, T_MX, C_IN, "sd", cut ? rec->name : NULL, rec->weight, rec->target))
+		      anscount++;
+		  }
+		
+		/* restore config data */
+		if (cut)
+		  *cut = '.';
+	      }
+	      
+	  for (txt = daemon->rr; txt; txt = txt->next)
+	    if (in_zone(zone, txt->name, &cut))
+	      {
+		if (cut)
+		  *cut = 0;
+		
+		if (add_resource_record(header, limit, &trunc, -axfroffset, &ansp, daemon->auth_ttl,
+					NULL, txt->class, C_IN, "t",  cut ? txt->name : NULL, txt->len, txt->txt))
+		  anscount++;
+		
+		/* restore config data */
+		if (cut)
+		  *cut = '.';
+	      }
+	  
+	  for (txt = daemon->txt; txt; txt = txt->next)
+	    if (txt->class == C_IN && in_zone(zone, txt->name, &cut))
+	      {
+		if (cut)
+		  *cut = 0;
+		
+		if (add_resource_record(header, limit, &trunc, -axfroffset, &ansp, daemon->auth_ttl,
+					NULL, T_TXT, C_IN, "t", cut ? txt->name : NULL, txt->len, txt->txt))
+		  anscount++;
+		
+		/* restore config data */
+		if (cut)
+		  *cut = '.';
+	      }
+	  
+	  for (na = daemon->naptr; na; na = na->next)
+	    if (in_zone(zone, na->name, &cut))
+	      {
+		if (cut)
+		  *cut = 0;
+		
+		if (add_resource_record(header, limit, &trunc, -axfroffset, &ansp, daemon->auth_ttl, 
+					NULL, T_NAPTR, C_IN, "sszzzd", cut ? na->name : NULL,
+					na->order, na->pref, na->flags, na->services, na->regexp, na->replace))
+		  anscount++;
+		
+		/* restore config data */
+		if (cut)
+		  *cut = '.'; 
+	      }
+	  
+	  for (intr = daemon->int_names; intr; intr = intr->next)
+	    if (in_zone(zone, intr->name, &cut))
+	      {
+		struct addrlist *addrlist;
+		
+		if (cut)
+		  *cut = 0;
+		
+		for (addrlist = intr->addr4; addrlist; addrlist = addrlist->next) 
+		  if (filter_constructed_dhcp(zone, F_IPV4,  &addrlist->addr) && 
+		      add_resource_record(header, limit, &trunc, -axfroffset, &ansp, 
+					  daemon->auth_ttl, NULL, T_A, C_IN, "4", cut ? intr->name : NULL, &addrlist->addr))
+		    anscount++;
+		
+#ifdef HAVE_IPV6
+		for (addrlist = intr->addr6; addrlist; addrlist = addrlist->next) 
+		  if (filter_constructed_dhcp(zone, F_IPV6,  &addrlist->addr) &&
+		      add_resource_record(header, limit, &trunc, -axfroffset, &ansp, 
+					  daemon->auth_ttl, NULL, T_AAAA, C_IN, "6", cut ? intr->name : NULL, &addrlist->addr))
+		    anscount++;
+#endif		    
+		
+		/* restore config data */
+		if (cut)
+		  *cut = '.'; 
+	      }
+             
+	  for (a = daemon->cnames; a; a = a->next)
+	    if (in_zone(zone, a->alias, &cut))
+	      {
+		strcpy(name, a->target);
+		if (!strchr(name, '.'))
+		  {
+		    strcat(name, ".");
+		    strcat(name, zone->domain);
+		  }
+		
+		if (cut)
+		  *cut = 0;
+		
+		if (add_resource_record(header, limit, &trunc, -axfroffset, &ansp, 
+					daemon->auth_ttl, NULL,
+					T_CNAME, C_IN, "d",  cut ? a->alias : NULL, name))
+		  anscount++;
+	      }
+	
+	  cache_enumerate(1);
+	  while ((crecp = cache_enumerate(0)))
+	    {
+	      if ((crecp->flags & (F_IPV4 | F_IPV6)) &&
+		  !(crecp->flags & (F_NEG | F_NXDOMAIN)) &&
+		  (crecp->flags & F_FORWARD))
+		{
+		  if ((crecp->flags & F_DHCP) && !option_bool(OPT_DHCP_FQDN))
+		    {
+		      char *cache_name = cache_get_name(crecp);
+		      if (!strchr(cache_name, '.') && filter_constructed_dhcp(zone, (crecp->flags & (F_IPV6 | F_IPV4)), &(crecp->addr.addr)))
+			{
+			  qtype = T_A;
+#ifdef HAVE_IPV6
+			  if (crecp->flags & F_IPV6)
+			    qtype = T_AAAA;
+#endif
+			  if (add_resource_record(header, limit, &trunc, -axfroffset, &ansp, 
+						  daemon->auth_ttl, NULL, qtype, C_IN, 
+						  (crecp->flags & F_IPV4) ? "4" : "6", cache_name, &crecp->addr))
+			    anscount++;
+			}
+		    }
+		  
+		  if ((crecp->flags & F_HOSTS) || (((crecp->flags & F_DHCP) && option_bool(OPT_DHCP_FQDN))))
+		    {
+		      strcpy(name, cache_get_name(crecp));
+		      if (in_zone(zone, name, &cut) && filter_constructed_dhcp(zone, (crecp->flags & (F_IPV6 | F_IPV4)), &(crecp->addr.addr)))
+			{
+			  qtype = T_A;
+#ifdef HAVE_IPV6
+			  if (crecp->flags & F_IPV6)
+			    qtype = T_AAAA;
+#endif
+			   if (cut)
+			     *cut = 0;
+
+			   if (add_resource_record(header, limit, &trunc, -axfroffset, &ansp, 
+						   daemon->auth_ttl, NULL, qtype, C_IN, 
+						   (crecp->flags & F_IPV4) ? "4" : "6", cut ? name : NULL, &crecp->addr))
+			     anscount++;
+			}
+		    }
+		}
+	    }
+	   
+	  /* repeat SOA as last record */
+	  if (add_resource_record(header, limit, &trunc, axfroffset, &ansp, 
+				  daemon->auth_ttl, NULL, T_SOA, C_IN, "ddlllll",
+				  daemon->authserver,  daemon->hostmaster,
+				  daemon->soa_sn, daemon->soa_refresh, 
+				  daemon->soa_retry, daemon->soa_expiry, 
+				  daemon->auth_ttl))
+	    anscount++;
+	  
+	}
+      
+    }
+  
+  /* done all questions, set up header and return length of result */
+  /* clear authoritative and truncated flags, set QR flag */
+  header->hb3 = (header->hb3 & ~(HB3_AA | HB3_TC)) | HB3_QR;
+  /* clear RA flag */
+  header->hb4 &= ~HB4_RA;
+
+  /* authoritive */
+  if (auth)
+    header->hb3 |= HB3_AA;
+  
+  /* truncation */
+  if (trunc)
+    header->hb3 |= HB3_TC;
+  
+  if (anscount == 0 && auth && nxdomain)
+    SET_RCODE(header, NXDOMAIN);
+  else
+    SET_RCODE(header, NOERROR); /* no error */
+  header->ancount = htons(anscount);
+  header->nscount = htons(authcount);
+  header->arcount = htons(0);
+  return ansp - (unsigned char *)header;
+}
+  
+#endif  
+  
+
+

src/bpf.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -111,7 +111,7 @@ int iface_enumerate(int family, void *parm, int (*callback)())
 	{
 	  int iface_index = if_nametoindex(addrs->ifa_name);
 
-	  if (iface_index == 0)
+	  if (iface_index == 0 || !addrs->ifa_addr || !addrs->ifa_netmask)
 	    continue;
 
 	  if (family == AF_INET)
@@ -119,8 +119,11 @@ int iface_enumerate(int family, void *parm, int (*callback)())
 	      struct in_addr addr, netmask, broadcast;
 	      addr = ((struct sockaddr_in *) addrs->ifa_addr)->sin_addr;
 	      netmask = ((struct sockaddr_in *) addrs->ifa_netmask)->sin_addr;
-	      broadcast = ((struct sockaddr_in *) addrs->ifa_broadaddr)->sin_addr; 
-	      if (!((*callback)(addr, iface_index, netmask, broadcast, parm)))
+	      if (addrs->ifa_broadaddr)
+		broadcast = ((struct sockaddr_in *) addrs->ifa_broadaddr)->sin_addr; 
+	      else 
+		broadcast.s_addr = 0;	      
+	      if (!((*callback)(addr, iface_index, NULL, netmask, broadcast, parm)))
 		goto err;
 	    }
 #ifdef HAVE_IPV6
@@ -147,7 +150,8 @@ int iface_enumerate(int family, void *parm, int (*callback)())
 		  addr->s6_addr[3] = 0;
 		}
 	      
-	      if (!((*callback)(addr, prefix, scope_id, iface_index, 0, parm)))
+	      /* preferred and valid times == forever until we known how to dtermine them. */
+	      if (!((*callback)(addr, prefix, scope_id, iface_index, 0, -1, -1, parm)))
 		goto err;
 	}
 #endif

src/cache.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -235,6 +235,29 @@ char *cache_get_name(struct crec *crecp)
   return crecp->name.sname;
 }
 
+struct crec *cache_enumerate(int init)
+{
+  static int bucket;
+  static struct crec *cache;
+
+  if (init)
+    {
+      bucket = 0;
+      cache = NULL;
+    }
+  else if (cache && cache->hash_next)
+    cache = cache->hash_next;
+  else
+    {
+       cache = NULL; 
+       while (bucket < hash_size)
+	 if ((cache = hash_table[bucket++]))
+	   break;
+    }
+  
+  return cache;
+}
+
 static int is_outdated_cname_pointer(struct crec *crecp)
 {
   if (!(crecp->flags & F_CNAME))
@@ -371,7 +394,7 @@ struct crec *cache_insert(char *name, struct all_addr *addr,
   int freed_all = flags & F_REVERSE;
   int free_avail = 0;
 
-  if(daemon->max_cache_ttl < ttl)
+  if (daemon->max_cache_ttl != 0 && daemon->max_cache_ttl < ttl)
     ttl = daemon->max_cache_ttl;
 
   /* Don't log keys */
@@ -948,38 +971,6 @@ void cache_reload(void)
       total_size = read_hostsfile(ah->fname, ah->index, total_size, (struct crec **)daemon->packet, revhashsz);
 } 
 
-char *get_domain(struct in_addr addr)
-{
-  struct cond_domain *c;
-
-  for (c = daemon->cond_domain; c; c = c->next)
-    if (!c->is6 &&
-	ntohl(addr.s_addr) >= ntohl(c->start.s_addr) &&
-        ntohl(addr.s_addr) <= ntohl(c->end.s_addr))
-      return c->domain;
-
-  return daemon->domain_suffix;
-}
-
-
-#ifdef HAVE_IPV6
-char *get_domain6(struct in6_addr *addr)
-{
-  struct cond_domain *c;
-
-  u64 addrpart = addr6part(addr);
-  
-  for (c = daemon->cond_domain; c; c = c->next)
-    if (c->is6 &&
-	is_same_net6(addr, &c->start6, 64) &&
-	addrpart >= addr6part(&c->start6) &&
-        addrpart <= addr6part(&c->end6))
-      return c->domain;
-  
-  return daemon->domain_suffix;
-}
-#endif
-
 #ifdef HAVE_DHCP
 struct in_addr a_record_from_hosts(char *name, time_t now)
 {
@@ -1248,14 +1239,14 @@ char *record_source(int index)
   return "<unknown>";
 }
 
-void querystr(char *str, unsigned short type)
+void querystr(char *desc, char *str, unsigned short type)
 {
   unsigned int i;
   
-  sprintf(str, "query[type=%d]", type); 
+  sprintf(str, "%s[type=%d]", desc, type); 
   for (i = 0; i < (sizeof(typestr)/sizeof(typestr[0])); i++)
     if (typestr[i].type == type)
-      sprintf(str,"query[%s]", typestr[i].name);
+      sprintf(str,"%s[%s]", desc, typestr[i].name);
 }
 
 void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg)
@@ -1316,6 +1307,8 @@ void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg)
     source = arg;
   else if (flags & F_UPSTREAM)
     source = "reply";
+  else if (flags & F_AUTH)
+    source = "auth";
   else if (flags & F_SERVER)
     {
       source = "forwarded";

src/config.h

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -42,7 +42,12 @@
 #define EDNS0_OPTION_MAC 5 /* dyndns.org temporary assignment */
 #define DNSMASQ_SERVICE "uk.org.thekelleys.dnsmasq" /* Default - may be overridden by config */
 #define DNSMASQ_PATH "/uk/org/thekelleys/dnsmasq"
-
+#define AUTH_TTL 600 /* default TTL for auth DNS */
+#define SOA_REFRESH 1200 /* SOA refresh default */
+#define SOA_RETRY 180 /* SOA retry default */
+#define SOA_EXPIRY 1209600 /* SOA expiry default */
+#define RA_INTERVAL 600 /* Send unsolicited RA's this often when not provoked. */
+ 
 /* compile-time options: uncomment below to enable or do eg.
    make COPTS=-DHAVE_BROKEN_RTC
 
@@ -92,12 +97,22 @@ HAVE_CONNTRACK
    a build-dependency on libnetfilter_conntrack, but the resulting binary will
    still run happily on a kernel without conntrack support.
 
+HAVE_IPSET
+    define this to include the ability to selectively add resolved ip addresses
+    to given ipsets.
+
+HAVE_AUTH
+   define this to include the facility to act as an authoritative DNS
+   server for one or more zones.
+
+
 NO_IPV6
 NO_TFTP
 NO_DHCP
 NO_DHCP6
 NO_SCRIPT
 NO_LARGEFILE
+NO_AUTH
    these are avilable to explictly disable compile time options which would 
    otherwise be enabled automatically (HAVE_IPV6, >2Gb file sizes) or 
    which are enabled  by default in the distributed source tree. Building dnsmasq
@@ -119,6 +134,8 @@ RESOLVFILE
 #define HAVE_DHCP6 
 #define HAVE_TFTP
 #define HAVE_SCRIPT
+#define HAVE_AUTH
+#define HAVE_IPSET 
 /* #define HAVE_LUASCRIPT */
 /* #define HAVE_BROKEN_RTC */
 /* #define HAVE_DBUS */
@@ -126,7 +143,6 @@ RESOLVFILE
 /* #define HAVE_CONNTRACK */
 
 
-
 /* Default locations for important system files. */
 
 #ifndef LEASEFILE
@@ -263,12 +279,12 @@ HAVE_SOCKADDR_SA_LEN
 #if defined(INET6_ADDRSTRLEN) && defined(IPV6_V6ONLY)
 #  define HAVE_IPV6
 #  define ADDRSTRLEN INET6_ADDRSTRLEN
-#elif defined(INET_ADDRSTRLEN)
+#else
+#  if !defined(INET_ADDRSTRLEN)
+#      define INET_ADDRSTRLEN 16 /* 4*3 + 3 dots + NULL */
+#  endif
 #  undef HAVE_IPV6
 #  define ADDRSTRLEN INET_ADDRSTRLEN
-#else
-#  undef HAVE_IPV6
-#  define ADDRSTRLEN 16 /* 4*3 + 3 dots + NULL */
 #endif
 
 
@@ -307,6 +323,13 @@ HAVE_SOCKADDR_SA_LEN
 #define HAVE_SCRIPT
 #endif
 
+#ifdef NO_AUTH
+#undef HAVE_AUTH
+#endif
+
+#if defined(NO_IPSET) || !defined(HAVE_LINUX_NETWORK)
+#undef HAVE_IPSET
+#endif
 
 /* Define a string indicating which options are in use.
    DNSMASQP_COMPILE_OPTS is only defined in dnsmasq.c */
@@ -365,7 +388,15 @@ static char *compile_opts =
 #ifndef HAVE_CONNTRACK
 "no-"
 #endif
-"conntrack";
+"conntrack "
+#ifndef HAVE_IPSET
+"no-"
+#endif
+"ipset "
+#ifndef HAVE_AUTH
+"no-"
+#endif
+  "auth";
 
 #endif
 

src/conntrack.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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

src/dbus.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -91,16 +91,19 @@ static dbus_bool_t add_watch(DBusWatch *watch, void *data)
 
 static void remove_watch(DBusWatch *watch, void *data)
 {
-  struct watch **up, *w;  
+  struct watch **up, *w, *tmp;  
   
-  for (up = &(daemon->watches), w = daemon->watches; w; w = w->next)
-    if (w->watch == watch)
-      {
-        *up = w->next;
-        free(w);
-      }
-    else
-      up = &(w->next);
+  for (up = &(daemon->watches), w = daemon->watches; w; w = tmp)
+    {
+      tmp = w->next;
+      if (w->watch == watch)
+	{
+	  *up = tmp;
+	  free(w);
+	}
+      else
+	up = &(w->next);
+    }
 
   w = data; /* no warning */
 }
@@ -340,9 +343,11 @@ static DBusMessage* dbus_read_servers_ex(DBusMessage *message, int strings)
 	    }
 	  
 	  /* dup the string because it gets modified during parsing */
+	  if (dup)
+	    free(dup);
 	  if (!(dup = str_domain = whine_malloc(strlen(str)+1)))
 	    break;
-
+	  
 	  strcpy(str_domain, str);
 
 	  /* point to address part of old string for error message */
@@ -400,9 +405,11 @@ static DBusMessage* dbus_read_servers_ex(DBusMessage *message, int strings)
 	    }
 	  
 	  /* dup the string because it gets modified during parsing */
+	  if (dup)
+	    free(dup);
 	  if (!(dup = str_addr = whine_malloc(strlen(str)+1)))
 	    break;
-	   
+	  
 	  strcpy(str_addr, str);
 	}
 

src/dhcp-common.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -91,6 +91,7 @@ struct dhcp_netid *option_filter(struct dhcp_netid *tags, struct dhcp_netid *con
 {
   struct dhcp_netid *tagif = run_tag_if(tags);
   struct dhcp_opt *opt;
+  struct dhcp_opt *tmp;  
 
   /* flag options which are valid with the current tag set (sans context tags) */
   for (opt = opts; opt; opt = opt->next)
@@ -135,7 +136,6 @@ struct dhcp_netid *option_filter(struct dhcp_netid *tags, struct dhcp_netid *con
   for (opt = opts; opt; opt = opt->next)
     if (!(opt->flags & (DHOPT_ENCAPSULATE | DHOPT_VENDOR | DHOPT_RFC3925 | DHOPT_TAGOK)) && !opt->netid)
       {
-	struct dhcp_opt *tmp;  
 	for (tmp = opts; tmp; tmp = tmp->next) 
 	  if (tmp->opt == opt->opt && (tmp->flags & DHOPT_TAGOK))
 	    break;
@@ -145,6 +145,13 @@ struct dhcp_netid *option_filter(struct dhcp_netid *tags, struct dhcp_netid *con
 	  my_syslog(MS_DHCP | LOG_WARNING, _("Ignoring duplicate dhcp-option %d"), tmp->opt); 
       }
 
+  /* Finally, eliminate duplicate options later in the chain, and therefore earlier in the config file. */
+  for (opt = opts; opt; opt = opt->next)
+    if (opt->flags & DHOPT_TAGOK)
+      for (tmp = opt->next; tmp; tmp = tmp->next) 
+	if (tmp->opt == opt->opt)
+	  tmp->flags &= ~DHOPT_TAGOK;
+  
   return tagif;
 }
 	
@@ -333,83 +340,6 @@ void dhcp_update_configs(struct dhcp_config *configs)
 
 }
 
-#ifdef HAVE_DHCP6
-static int join_multicast_worker(struct in6_addr *local, int prefix, 
-				 int scope, int if_index, int dad, void *vparam)
-{
-  char ifrn_name[IFNAMSIZ];
-  struct ipv6_mreq mreq;
-  int fd, i, max = *((int *)vparam);
-  struct iname *tmp;
-
-  (void)prefix;
-  (void)scope;
-  (void)dad;
-  
-  /* record which interfaces we join on, so that we do it at most one per 
-     interface, even when they have multiple addresses. Use outpacket
-     as an array of int, since it's always allocated here and easy
-     to expand for theoretical vast numbers of interfaces. */
-  for (i = 0; i < max; i++)
-    if (if_index == ((int *)daemon->outpacket.iov_base)[i])
-      return 1;
-  
-  if ((fd = socket(PF_INET6, SOCK_DGRAM, 0)) == -1)
-    return 0;
-  
-  if (!indextoname(fd, if_index, ifrn_name))
-    {
-      close(fd);
-      return 0;
-    }
-  
-  close(fd);
-
-  /* Are we doing DHCP on this interface? */
-  if (!iface_check(AF_INET6, (struct all_addr *)local, ifrn_name))
-    return 1;
- 
-  for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
-    if (tmp->name && (strcmp(tmp->name, ifrn_name) == 0))
-      return 1;
-
-  mreq.ipv6mr_interface = if_index;
-  
-  inet_pton(AF_INET6, ALL_RELAY_AGENTS_AND_SERVERS, &mreq.ipv6mr_multiaddr);
-  
-  if (daemon->dhcp6 &&
-      setsockopt(daemon->dhcp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
-    return 0;
-
-  inet_pton(AF_INET6, ALL_SERVERS, &mreq.ipv6mr_multiaddr);
-  
-  if (daemon->dhcp6 && 
-      setsockopt(daemon->dhcp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
-    return 0;
-  
-  inet_pton(AF_INET6, ALL_ROUTERS, &mreq.ipv6mr_multiaddr);
-  
-  if (daemon->ra_contexts &&
-      setsockopt(daemon->icmp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
-    return 0;
-  
-  expand_buf(&daemon->outpacket, (max+1) * sizeof(int));
-  ((int *)daemon->outpacket.iov_base)[max++] = if_index;
-  
-  *((int *)vparam) = max;
-  
-  return 1;
-}
-
-void join_multicast(void)
-{
-  int count = 0;
-
-   if (!iface_enumerate(AF_INET6, &count, join_multicast_worker))
-     die(_("failed to join DHCPv6 multicast group: %s"), NULL, EC_BADNET);
-}
-#endif
-
 #ifdef HAVE_LINUX_NETWORK 
 void bindtodevice(int fd)
 {
@@ -417,21 +347,27 @@ void bindtodevice(int fd)
      to that device. This is for the use case of  (eg) OpenStack, which runs a new
      dnsmasq instance for each VLAN interface it creates. Without the BINDTODEVICE, 
      individual processes don't always see the packets they should.
-     SO_BINDTODEVICE is only available Linux. */
+     SO_BINDTODEVICE is only available Linux. 
+
+     Note that if wildcards are used in --interface, or a configured interface doesn't
+     yet exist, then more interfaces may arrive later, so we can't safely assert there
+     is only one interface and proceed.
+*/
   
   struct irec *iface, *found;
-  
+  struct iname *if_tmp;
+
+  for (if_tmp = daemon->if_names; if_tmp; if_tmp = if_tmp->next)
+    if (if_tmp->name && (!if_tmp->used || strchr(if_tmp->name, '*')))
+      return;
+
   for (found = NULL, iface = daemon->interfaces; iface; iface = iface->next)
     if (iface->dhcp_ok)
       {
 	if (!found)
 	  found = iface;
 	else if (strcmp(found->name, iface->name) != 0) 
-	  {
-	    /* more than one. */
-	    found = NULL;
-	    break;
-	  }
+	  return; /* more than one. */
       }
   
   if (found)
@@ -582,7 +518,7 @@ void display_opts6(void)
 }
 #endif
 
-u16 lookup_dhcp_opt(int prot, char *name)
+int lookup_dhcp_opt(int prot, char *name)
 {
   const struct opttab_t *t;
   int i;
@@ -595,14 +531,13 @@ u16 lookup_dhcp_opt(int prot, char *name)
     t = opttab;
 
   for (i = 0; t[i].name; i++)
-    if (!(t[i].size & OT_INTERNAL) &&
-	strcasecmp(t[i].name, name) == 0)
+    if (strcasecmp(t[i].name, name) == 0)
       return t[i].val;
   
-  return 0;
+  return -1;
 }
 
-u16 lookup_dhcp_len(int prot, u16 val)
+int lookup_dhcp_len(int prot, int val)
 {
   const struct opttab_t *t;
   int i;
@@ -616,14 +551,9 @@ u16 lookup_dhcp_len(int prot, u16 val)
 
   for (i = 0; t[i].name; i++)
     if (val == t[i].val)
-      {
-	if (t[i].size & OT_INTERNAL)
-	  return 0;
-	
-	return t[i].size & ~OT_DEC;
-      }
- 
-  return 0;
+      return t[i].size & ~OT_DEC;
+
+   return 0;
 }
 
 char *option_string(int prot, unsigned int opt, unsigned char *val, int opt_len, char *buf, int buf_len)
@@ -750,4 +680,82 @@ char *option_string(int prot, unsigned int opt, unsigned char *val, int opt_len,
 
 }
 
+void log_context(int family, struct dhcp_context *context)
+{
+  /* Cannot use dhcp_buff* for RA contexts */
+
+  void *start = &context->start;
+  void *end = &context->end;
+  char *template = "", *p = daemon->namebuff;
+  
+  *p = 0;
+    
+#ifdef HAVE_DHCP6
+  if (family == AF_INET6)
+    {
+      struct in6_addr subnet = context->start6;
+      if (!(context->flags & CONTEXT_TEMPLATE))
+	setaddr6part(&subnet, 0);
+      inet_ntop(AF_INET6, &subnet, daemon->addrbuff, ADDRSTRLEN); 
+      start = &context->start6;
+      end = &context->end6;
+    }
+#endif
+
+  if (family != AF_INET && (context->flags & CONTEXT_DEPRECATE))
+    strcpy(daemon->namebuff, _(", prefix deprecated"));
+  else
+    {
+      p += sprintf(p, _(", lease time "));
+      prettyprint_time(p, context->lease_time);
+      p += strlen(p);
+    }	
+
+#ifdef HAVE_DHCP6
+  if (context->flags & CONTEXT_CONSTRUCTED)
+    {
+      char ifrn_name[IFNAMSIZ];
+      
+      template = p;
+      p += sprintf(p, ", ");
+      
+      if (indextoname(daemon->doing_dhcp6 ? daemon->dhcp6fd : daemon->icmp6fd, context->if_index, ifrn_name))
+	sprintf(p, "constructed for %s", ifrn_name);
+    }
+  else if (context->flags & CONTEXT_TEMPLATE)
+    {
+      template = p;
+      p += sprintf(p, ", ");
+       
+      sprintf(p, "template for %s", context->template_interface);  
+    }
+#endif
+     
+  if ((context->flags & CONTEXT_DHCP) || family == AF_INET) 
+    {
+      inet_ntop(family, start, daemon->dhcp_buff, 256);
+      inet_ntop(family, end, daemon->dhcp_buff3, 256);
+      my_syslog(MS_DHCP | LOG_INFO, 
+	      (context->flags & CONTEXT_RA_STATELESS) ? 
+	      _("%s stateless on %s%.0s%.0s%s") :
+	      (context->flags & CONTEXT_STATIC) ? 
+	      _("%s, static leases only on %.0s%s%s%.0s") :
+	      (context->flags & CONTEXT_PROXY) ?
+	      _("%s, proxy on subnet %.0s%s%.0s%.0s") :
+	      _("%s, IP range %s -- %s%s%.0s"),
+	      (family != AF_INET) ? "DHCPv6" : "DHCP",
+		daemon->dhcp_buff, daemon->dhcp_buff3, daemon->namebuff, template);
+    }
+  
+#ifdef HAVE_DHCP6
+  if (context->flags & CONTEXT_RA_NAME)
+    my_syslog(MS_DHCP | LOG_INFO, _("DHCPv4-derived IPv6 names on %s%s"), daemon->addrbuff, template);
+       
+  if ((context->flags & CONTEXT_RA) || (option_bool(OPT_RA) && (context->flags & CONTEXT_DHCP) && family == AF_INET6)) 
+    my_syslog(MS_DHCP | LOG_INFO, _("router advertisement on %s%s"), daemon->addrbuff, template);
+#endif
+
+}
+      
+
 #endif

src/dhcp-protocol.h

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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

src/dhcp.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -28,9 +28,9 @@ struct match_param {
   struct in_addr netmask, broadcast, addr;
 };
 
-static int complete_context(struct in_addr local, int if_index, 
+static int complete_context(struct in_addr local, int if_index, char *label,
 			    struct in_addr netmask, struct in_addr broadcast, void *vparam);
-static int check_listen_addrs(struct in_addr local, int if_index, 
+static int check_listen_addrs(struct in_addr local, int if_index, char *label,
 			      struct in_addr netmask, struct in_addr broadcast, void *vparam);
 
 static int make_fd(int port)
@@ -65,14 +65,22 @@ static int make_fd(int port)
   
   /* When bind-interfaces is set, there might be more than one dnmsasq
      instance binding port 67. That's OK if they serve different networks.
-     Need to set REUSEADDR to make this posible, or REUSEPORT on *BSD. */
+     Need to set REUSEADDR|REUSEPORT to make this posible.
+     Handle the case that REUSEPORT is defined, but the kernel doesn't 
+     support it. This handles the introduction of REUSEPORT on Linux. */
   if (option_bool(OPT_NOWILD) || option_bool(OPT_CLEVERBIND))
     {
+      int rc = -1, porterr = 0;
+
 #ifdef SO_REUSEPORT
-      int rc = setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &oneopt, sizeof(oneopt));
-#else
-      int rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &oneopt, sizeof(oneopt));
+      if ((rc = setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &oneopt, sizeof(oneopt))) == -1 && 
+	  errno != ENOPROTOOPT)
+	porterr = 1;
 #endif
+      
+      if (rc == -1 && !porterr)
+	rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &oneopt, sizeof(oneopt));
+      
       if (rc == -1)
 	die(_("failed to set SO_REUSE{ADDR|PORT} on DHCP socket: %s"), NULL, EC_BADNET);
     }
@@ -252,7 +260,7 @@ void dhcp_packet(time_t now, int pxe_fd)
     }
   
   for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
-    if (tmp->name && (strcmp(tmp->name, ifr.ifr_name) == 0))
+    if (tmp->name && wildcard_match(tmp->name, ifr.ifr_name))
       return;
   
   /* unlinked contexts are marked by context->current == context */
@@ -262,7 +270,7 @@ void dhcp_packet(time_t now, int pxe_fd)
   parm.current = NULL;
   parm.ind = iface_index;
 
-  if (!iface_check(AF_INET, (struct all_addr *)&iface_addr, ifr.ifr_name))
+  if (!iface_check(AF_INET, (struct all_addr *)&iface_addr, ifr.ifr_name, NULL))
     {
       /* If we failed to match the primary address of the interface, see if we've got a --listen-address
 	 for a secondary */
@@ -279,7 +287,7 @@ void dhcp_packet(time_t now, int pxe_fd)
       iface_addr = match.addr;
       /* make sure secondary address gets priority in case
 	 there is more than one address on the interface in the same subnet */
-      complete_context(match.addr, iface_index, match.netmask, match.broadcast, &parm);
+      complete_context(match.addr, iface_index, NULL, match.netmask, match.broadcast, &parm);
     }    
       
   if (!iface_enumerate(AF_INET, &parm, complete_context))
@@ -403,12 +411,14 @@ void dhcp_packet(time_t now, int pxe_fd)
 }
  
 /* check against secondary interface addresses */
-static int check_listen_addrs(struct in_addr local, int if_index, 
+static int check_listen_addrs(struct in_addr local, int if_index, char *label,
 			      struct in_addr netmask, struct in_addr broadcast, void *vparam)
 {
   struct match_param *param = vparam;
   struct iname *tmp;
 
+  (void) label;
+
   if (if_index == param->ind)
     {
       for (tmp = daemon->if_addrs; tmp; tmp = tmp->next)
@@ -436,11 +446,13 @@ static int check_listen_addrs(struct in_addr local, int if_index,
 
    Note that the current chain may be superceded later for configured hosts or those coming via gateways. */
 
-static int complete_context(struct in_addr local, int if_index, 
+static int complete_context(struct in_addr local, int if_index, char *label,
 			    struct in_addr netmask, struct in_addr broadcast, void *vparam)
 {
   struct dhcp_context *context;
   struct iface_param *param = vparam;
+
+  (void)label;
   
   for (context = daemon->dhcp; context; context = context->next)
     {

src/dhcp6-protocol.h

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -59,6 +59,11 @@
 #define OPTION6_SUBSCRIBER_ID   38
 #define OPTION6_FQDN            39
 
+/* replace this with the real number when allocated.
+   defining this also enables the relevant code. */ 
+/* #define OPTION6_PREFIX_CLASS    99 */
+
+
 #define DHCP6SUCCESS     0
 #define DHCP6UNSPEC      1
 #define DHCP6NOADDRS     2

src/dhcp6.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -25,7 +25,8 @@ struct iface_param {
 };
 
 static int complete_context6(struct in6_addr *local,  int prefix,
-			     int scope, int if_index, int dad, void *vparam);
+			     int scope, int if_index, int flags, 
+			     unsigned int preferred, unsigned int valid, void *vparam);
 
 static int make_duid1(int index, unsigned int type, char *mac, size_t maclen, void *parm); 
 
@@ -47,16 +48,24 @@ void dhcp6_init(void)
       !set_ipv6pktinfo(fd))
     die (_("cannot create DHCPv6 socket: %s"), NULL, EC_BADNET);
   
-  /* When bind-interfaces is set, there might be more than one dnmsasq
+ /* When bind-interfaces is set, there might be more than one dnmsasq
      instance binding port 547. That's OK if they serve different networks.
-     Need to set REUSEADDR to make this posible, or REUSEPORT on *BSD. */
+     Need to set REUSEADDR|REUSEPORT to make this posible.
+     Handle the case that REUSEPORT is defined, but the kernel doesn't 
+     support it. This handles the introduction of REUSEPORT on Linux. */
   if (option_bool(OPT_NOWILD) || option_bool(OPT_CLEVERBIND))
     {
+      int rc = -1, porterr = 0;
+
 #ifdef SO_REUSEPORT
-      int rc = setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &oneopt, sizeof(oneopt));
-#else
-      int rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &oneopt, sizeof(oneopt));
+      if ((rc = setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &oneopt, sizeof(oneopt))) == -1 &&
+	  errno != ENOPROTOOPT)
+	porterr = 1;
 #endif
+      
+      if (rc == -1 && !porterr)
+	rc = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &oneopt, sizeof(oneopt));
+      
       if (rc == -1)
 	die(_("failed to set SO_REUSE{ADDR|PORT} on DHCPv6 socket: %s"), NULL, EC_BADNET);
     }
@@ -119,11 +128,11 @@ void dhcp6_packet(time_t now)
     return;
     
   for (tmp = daemon->if_except; tmp; tmp = tmp->next)
-    if (tmp->name && (strcmp(tmp->name, ifr.ifr_name) == 0))
+    if (tmp->name && wildcard_match(tmp->name, ifr.ifr_name))
       return;
 
   for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
-    if (tmp->name && (strcmp(tmp->name, ifr.ifr_name) == 0))
+    if (tmp->name && wildcard_match(tmp->name, ifr.ifr_name))
       return;
  
   parm.current = NULL;
@@ -152,7 +161,7 @@ void dhcp6_packet(time_t now)
     {
       
       for (tmp = daemon->if_names; tmp; tmp = tmp->next)
-	if (tmp->name && (strcmp(tmp->name, ifr.ifr_name) == 0))
+	if (tmp->name && wildcard_match(tmp->name, ifr.ifr_name))
 	  break;
 
       if (!tmp && !parm.addr_match)
@@ -181,15 +190,15 @@ void dhcp6_packet(time_t now)
 }
 
 static int complete_context6(struct in6_addr *local,  int prefix,
-			     int scope, int if_index, int dad, void *vparam)
+			     int scope, int if_index, int flags, unsigned int preferred, 
+			     unsigned int valid, void *vparam)
 {
   struct dhcp_context *context;
   struct iface_param *param = vparam;
   struct iname *tmp;
  
   (void)scope; /* warning */
-  (void)dad;
-      
+  
   if (if_index == param->ind &&
       !IN6_IS_ADDR_LOOPBACK(local) &&
       !IN6_IS_ADDR_LINKLOCAL(local) &&
@@ -210,16 +219,40 @@ static int complete_context6(struct in6_addr *local,  int prefix,
       
       for (context = daemon->dhcp6; context; context = context->next)
 	{
-	  if (prefix == context->prefix &&
+	  if ((context->flags & CONTEXT_DHCP) &&
+	      !(context->flags & CONTEXT_TEMPLATE) &&
+	      prefix == context->prefix &&
 	      is_same_net6(local, &context->start6, prefix) &&
 	      is_same_net6(local, &context->end6, prefix))
 	    {
+
+
 	      /* link it onto the current chain if we've not seen it before */
 	      if (context->current == context)
 		{
-		  context->current = param->current;
-		  param->current = context;
+		  struct dhcp_context *tmp, **up;
+		  
+		  /* use interface values only for contructed contexts */
+		  if (!(context->flags & CONTEXT_CONSTRUCTED))
+		    preferred = valid = 0xffffffff;
+		  else if (flags & IFACE_DEPRECATED)
+		    preferred = 0;
+
+		  if (context->flags & CONTEXT_DEPRECATE)
+		    preferred = 0;
+		  
+		  /* order chain, longest preferred time first */
+		  for (up = &param->current, tmp = param->current; tmp; tmp = tmp->current)
+		    if (tmp->preferred <= preferred)
+		      break;
+		    else
+		      up = &tmp->current;
+		  
+		  context->current = *up;
+		  *up = context;
 		  context->local6 = *local;
+		  context->preferred = preferred;
+		  context->valid = valid;
 		}
 	    }
 	}
@@ -240,8 +273,8 @@ struct dhcp_config *config_find_by_address6(struct dhcp_config *configs, struct
   return NULL;
 }
 
-int address6_allocate(struct dhcp_context *context,  unsigned char *clid, int clid_len, 
-		      int serial, struct dhcp_netid *netids, struct in6_addr *ans)   
+struct dhcp_context *address6_allocate(struct dhcp_context *context,  unsigned char *clid, int clid_len, 
+				       int iaid, int serial, struct dhcp_netid *netids, int plain_range, struct in6_addr *ans)   
 {
   /* Find a free address: exclude anything in use and anything allocated to
      a particular hwaddr/clientid/hostname in our configuration.
@@ -258,12 +291,12 @@ int address6_allocate(struct dhcp_context *context,  unsigned char *clid, int cl
 
   /* hash hwaddr: use the SDBM hashing algorithm.  This works
      for MAC addresses, let's see how it manages with client-ids! */
-  for (j = 0, i = 0; i < clid_len; i++)
+  for (j = iaid, i = 0; i < clid_len; i++)
     j += clid[i] + (j << 6) + (j << 16) - j;
   
-  for (pass = 0; pass <= 1; pass++)
+  for (pass = 0; pass <= plain_range ? 1 : 0; pass++)
     for (c = context; c; c = c->current)
-      if (c->flags & (CONTEXT_DEPRECATE | CONTEXT_STATIC | CONTEXT_RA_STATELESS))
+      if (c->flags & (CONTEXT_DEPRECATE | CONTEXT_STATIC | CONTEXT_RA_STATELESS | CONTEXT_USED))
 	continue;
       else if (!match_netid(c->filter, netids, pass))
 	continue;
@@ -273,7 +306,7 @@ int address6_allocate(struct dhcp_context *context,  unsigned char *clid, int cl
 	    /* seed is largest extant lease addr in this context */
 	    start = lease_find_max_addr6(c) + serial;
 	  else
-	    start = addr6part(&c->start6) + ((j + c->addr_epoch + serial) % (1 + addr6part(&c->end6) - addr6part(&c->start6)));
+	    start = addr6part(&c->start6) + ((j + c->addr_epoch) % (1 + addr6part(&c->end6) - addr6part(&c->start6)));
 
 	  /* iterate until we find a free address. */
 	  addr = start;
@@ -290,7 +323,7 @@ int address6_allocate(struct dhcp_context *context,  unsigned char *clid, int cl
 	      {
 		*ans = c->start6;
 		setaddr6part (ans, addr);
-		return 1;
+		return c;
 	      }
 	
 	    addr++;
@@ -300,13 +333,15 @@ int address6_allocate(struct dhcp_context *context,  unsigned char *clid, int cl
 	    
 	  } while (addr != start);
 	}
-  
-  return 0;
+	   
+  return NULL;
 }
 
+/* can dynamically allocate addr */
 struct dhcp_context *address6_available(struct dhcp_context *context, 
 					struct in6_addr *taddr,
-					struct dhcp_netid *netids)
+					struct dhcp_netid *netids,
+					int plain_range)
 {
   u64 start, end, addr = addr6part(taddr);
   struct dhcp_context *tmp;
@@ -321,67 +356,61 @@ struct dhcp_context *address6_available(struct dhcp_context *context,
 	  is_same_net6(&tmp->end6, taddr, tmp->prefix) &&
 	  addr >= start &&
           addr <= end &&
-          match_netid(tmp->filter, netids, 1))
+          match_netid(tmp->filter, netids, plain_range))
         return tmp;
     }
 
   return NULL;
 }
 
-struct dhcp_context *narrow_context6(struct dhcp_context *context, 
-				     struct in6_addr *taddr,
-				     struct dhcp_netid *netids)
+/* address OK if configured */
+struct dhcp_context *address6_valid(struct dhcp_context *context, 
+				    struct in6_addr *taddr,
+				    struct dhcp_netid *netids,
+				    int plain_range)
 {
-  /* We start of with a set of possible contexts, all on the current physical interface.
-     These are chained on ->current.
-     Here we have an address, and return the actual context correponding to that
-     address. Note that none may fit, if the address came a dhcp-host and is outside
-     any dhcp-range. In that case we return a static range if possible, or failing that,
-     any context on the correct subnet. (If there's more than one, this is a dodgy 
-     configuration: maybe there should be a warning.) */
-  
   struct dhcp_context *tmp;
+ 
+  for (tmp = context; tmp; tmp = tmp->current)
+    if (is_same_net6(&tmp->start6, taddr, tmp->prefix) &&
+	match_netid(tmp->filter, netids, plain_range))
+      return tmp;
 
-  if (!(tmp = address6_available(context, taddr, netids)))
-    {
-      for (tmp = context; tmp; tmp = tmp->current)
-        if (match_netid(tmp->filter, netids, 1) &&
-            is_same_net6(taddr, &tmp->start6, tmp->prefix) && 
-            (tmp->flags & CONTEXT_STATIC))
-          break;
-      
-      if (!tmp)
-        for (tmp = context; tmp; tmp = tmp->current)
-          if (match_netid(tmp->filter, netids, 1) &&
-              is_same_net6(taddr, &tmp->start6, tmp->prefix) &&
-              !(tmp->flags & CONTEXT_PROXY))
-            break;
-    }
-  
-  /* Only one context allowed now */
-  if (tmp)
-    tmp->current = NULL;
-  
-  return tmp;
+  return NULL;
 }
 
-static int is_config_in_context6(struct dhcp_context *context, struct dhcp_config *config)
+int config_valid(struct dhcp_config *config, struct dhcp_context *context, struct in6_addr *addr)
 {
-  if (!context) /* called via find_config() from lease_update_from_configs() */
-    return 1; 
-  if (!(config->flags & CONFIG_ADDR6) || is_addr_in_context6(context, &config->addr6))
-    return 1;
+  if (!config || !(config->flags & CONFIG_ADDR6))
+    return 0;
+
+  if ((config->flags & CONFIG_WILDCARD) && context->prefix == 64)
+    {
+      *addr = context->start6;
+      setaddr6part(addr, addr6part(&config->addr6));
+      return 1;
+    }
+  
+  if (is_same_net6(&context->start6, &config->addr6, context->prefix))
+    {
+      *addr = config->addr6;
+      return 1;
+    }
   
   return 0;
 }
 
-
-int is_addr_in_context6(struct dhcp_context *context, struct in6_addr *addr)
+static int is_config_in_context6(struct dhcp_context *context, struct dhcp_config *config)
 {
-  for (; context; context = context->current)
-    if (is_same_net6(addr, &context->start6, context->prefix))
-      return 1;
+  if (!(config->flags & CONFIG_ADDR6) || 
+      (config->flags & CONFIG_WILDCARD))
+
+    return 1;
   
+  for (; context; context = context->current)
+    if (is_same_net6(&config->addr6, &context->start6, context->prefix))
+      return 1;
+      
   return 0;
 }
 
@@ -467,6 +496,142 @@ static int make_duid1(int index, unsigned int type, char *mac, size_t maclen, vo
 
   return 0;
 }
+
+struct cparam {
+  time_t now;
+  int newone, newname;
+};
+
+static int construct_worker(struct in6_addr *local, int prefix, 
+			    int scope, int if_index, int flags, 
+			    int preferred, int valid, void *vparam)
+{
+  char ifrn_name[IFNAMSIZ];
+  struct in6_addr start6, end6;
+  struct dhcp_context *template, *context;
+
+  (void)scope;
+  (void)flags;
+  (void)valid;
+  (void)preferred;
+
+  struct cparam *param = vparam;
+
+  if (IN6_IS_ADDR_LOOPBACK(local) ||
+      IN6_IS_ADDR_LINKLOCAL(local) ||
+      IN6_IS_ADDR_MULTICAST(local))
+    return 1;
+
+  if (!indextoname(daemon->doing_dhcp6 ? daemon->dhcp6fd : daemon->icmp6fd, if_index, ifrn_name))
+    return 0;
+  
+  for (template = daemon->dhcp6; template; template = template->next)
+    if (!(template->flags & CONTEXT_TEMPLATE))
+      {
+	/* non-template entries, just fill in interface and local addresses */
+	if (prefix == template->prefix &&
+	    is_same_net6(local, &template->start6, prefix) &&
+	    is_same_net6(local, &template->end6, prefix))
+	  {
+	    template->if_index = if_index;
+	    template->local6 = *local;
+	  }
+	
+      }
+    else if ((addr6part(local) == addr6part(&template->start6) ||
+	      addr6part(local) == addr6part(&template->end6)) && 
+	     wildcard_match(template->template_interface, ifrn_name))
+      {
+	start6 = *local;
+	setaddr6part(&start6, addr6part(&template->start6));
+	end6 = *local;
+	setaddr6part(&end6, addr6part(&template->end6));
+	
+	for (context = daemon->dhcp6; context; context = context->next)
+	  if ((context->flags & CONTEXT_CONSTRUCTED) &&
+	      IN6_ARE_ADDR_EQUAL(&start6, &context->start6) &&
+	      IN6_ARE_ADDR_EQUAL(&end6, &context->end6))
+	    {
+	      context->flags &= ~CONTEXT_GC;
+	      break;
+	    }
+	
+	if (!context && (context = whine_malloc(sizeof (struct dhcp_context))))
+	  {
+	    *context = *template;
+	    context->start6 = start6;
+	    context->end6 = end6;
+	    context->flags &= ~CONTEXT_TEMPLATE;
+	    context->flags |= CONTEXT_CONSTRUCTED;
+	    context->if_index = if_index;
+	    context->local6 = *local;
+	    
+	    context->next = daemon->dhcp6;
+	    daemon->dhcp6 = context;
+
+	    ra_start_unsolicted(param->now, context);
+	    /* we created a new one, need to call
+	       lease_update_file to get periodic functions called */
+	    param->newone = 1; 
+
+	    /* Will need to add new putative SLAAC addresses to existing leases */
+	    if (context->flags & CONTEXT_RA_NAME)
+	      param->newname = 1;
+	    
+	    log_context(AF_INET6, context);
+	  } 
+      }
+  
+  return 1;
+}
+
+void dhcp_construct_contexts(time_t now)
+{ 
+  struct dhcp_context *tmp, *context, **up;
+  struct cparam param;
+  param.newone = 0;
+  param.newname = 0;
+  param.now = now;
+
+  for (context = daemon->dhcp6; context; context = context->next)
+    {
+      context->if_index = 0;
+      if (context->flags & CONTEXT_CONSTRUCTED)
+      	context->flags |= CONTEXT_GC;
+    }
+ 
+  iface_enumerate(AF_INET6, &param, construct_worker);
+
+  for (up = &daemon->dhcp6, context = daemon->dhcp6; context; context = tmp)
+    {
+      tmp = context->next;
+      
+      if (context->flags & CONTEXT_GC)
+	{
+	  *up = context->next;
+	  param.newone = 1; /* include deletion */ 
+	  if (context->flags & CONTEXT_RA_NAME)
+	    param.newname = 1; 
+	  free(context);
+	}
+      else
+	up = &context->next;
+    }
+  
+  if (param.newone)
+    {
+      if (daemon->dhcp || daemon->doing_dhcp6)
+	{
+	  if (param.newname)
+	    lease_update_slaac(now);
+	  lease_update_file(now);
+	}
+      else 
+	/* Not doing DHCP, so no lease system, manage alarms for ra only */
+	send_alarm(periodic_ra(now), now);
+    }
+}
+
 #endif
 
 

src/dns-protocol.h

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -52,6 +52,7 @@
 #define T_OPT		41
 #define	T_TKEY		249		
 #define	T_TSIG		250
+#define T_AXFR          252
 #define T_MAILB		253	
 #define T_ANY		255
 

src/dnsmasq.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -51,6 +51,7 @@ int main (int argc, char **argv)
   cap_user_header_t hdr = NULL;
   cap_user_data_t data = NULL;
 #endif 
+  struct dhcp_context *context;
 
 #ifdef LOCALEDIR
   setlocale(LC_ALL, "");
@@ -84,6 +85,7 @@ int main (int argc, char **argv)
 
   daemon->addrbuff = safe_malloc(ADDRSTRLEN);
 
+
 #ifdef HAVE_DHCP
   if (!daemon->lease_file)
     {
@@ -147,70 +149,83 @@ int main (int argc, char **argv)
     die(_("asychronous logging is not available under Android"), NULL, EC_BADCONF);
 #endif
 
+#ifndef HAVE_AUTH
+  if (daemon->authserver)
+    die(_("authoritative DNS not available: set HAVE_AUTH in src/config.h"), NULL, EC_BADCONF);
+#endif
+
   rand_init();
   
   now = dnsmasq_time();
+
+  /* Create a serial at startup if not configured. */
+  if (daemon->authinterface && daemon->soa_sn == 0)
+#ifdef HAVE_BROKEN_RTC
+    die(_("zone serial must be configured in --auth-soa"), NULL, EC_BADCONF);
+#else
+  daemon->soa_sn = now;
+#endif
   
 #ifdef HAVE_DHCP
   if (daemon->dhcp || daemon->dhcp6)
-    {
+    { 
+      
+#  ifdef HAVE_DHCP6
+      if (daemon->dhcp6)
+	{
+	  daemon->doing_ra = option_bool(OPT_RA);
+	  
+	  for (context = daemon->dhcp6; context; context = context->next)
+	    {
+	      if (context->flags & CONTEXT_DHCP)
+		daemon->doing_dhcp6 = 1;
+	      if (context->flags & CONTEXT_RA)
+		daemon->doing_ra = 1;
+#ifndef  HAVE_LINUX_NETWORK
+	      if (context->flags & CONTEXT_TEMPLATE)
+		die (_("dhcp-range constructor not available on this platform"), NULL, EC_BADCONF);
+#endif 
+	    }
+	}
+#  endif
+
       /* Note that order matters here, we must call lease_init before
 	 creating any file descriptors which shouldn't be leaked
 	 to the lease-script init process. We need to call common_init
 	 before lease_init to allocate buffers it uses.*/
-      dhcp_common_init();
-      lease_init(now);
-  
+      if (daemon->dhcp || daemon->doing_dhcp6)
+	{
+	  dhcp_common_init();
+	  lease_init(now);
+	}
+
       if (daemon->dhcp)
 	dhcp_init();
-    }
-  
+ 
 #  ifdef HAVE_DHCP6
-  /* Start RA subsystem if --enable-ra OR dhcp-range=<subnet>, ra-only */
-  if (daemon->ra_contexts || option_bool(OPT_RA))
-    {
-      /* link the DHCP6 contexts to the ra-only ones so we can traverse them all 
-	 from ->ra_contexts, but only the non-ra-onlies from ->dhcp6 */
-      struct dhcp_context *context;
+      if (daemon->doing_ra)
+	ra_init(now);
       
-      if (!daemon->ra_contexts)
-	daemon->ra_contexts = daemon->dhcp6;
-      else
-	{
-	  for (context = daemon->ra_contexts; context->next; context = context->next);
-	  context->next = daemon->dhcp6;
-	}
-      ra_init(now);
-    }
-
-  if (daemon->dhcp6)
-    dhcp6_init();
-
+      if (daemon->doing_dhcp6)
+	dhcp6_init();
 #  endif
+    }
 
 #endif
 
-#ifdef HAVE_LINUX_NETWORK
-  /* After lease_init */
-  netlink_init();
+#ifdef HAVE_IPSET
+  if (daemon->ipsets)
+    ipset_init();
+#endif
 
+#ifdef HAVE_LINUX_NETWORK
+  netlink_init();
+  
   if (option_bool(OPT_NOWILD) && option_bool(OPT_CLEVERBIND))
     die(_("cannot set --bind-interfaces and --bind-dynamic"), NULL, EC_BADCONF);
 #endif
 
-#ifdef HAVE_DHCP6
-  /* after netlink_init */
-  if (daemon->ra_contexts || daemon->dhcp6)
-    join_multicast();
-#endif
-
-#ifdef HAVE_DHCP
-  /* after netlink_init */
-  if (daemon->dhcp || daemon->dhcp6)
-    lease_find_interfaces(now);
-#endif
-
-  if (!enumerate_interfaces())
+  if (!enumerate_interfaces(1) || !enumerate_interfaces(0))
     die(_("failed to find list of interfaces: %s"), NULL, EC_MISC);
   
   if (option_bool(OPT_NOWILD) || option_bool(OPT_CLEVERBIND)) 
@@ -233,12 +248,18 @@ int main (int argc, char **argv)
 #endif
 
 #if defined(HAVE_LINUX_NETWORK) && defined(HAVE_DHCP6)
-      if (daemon->dhcp6)
+      if (daemon->doing_dhcp6)
 	bindtodevice(daemon->dhcp6fd);
 #endif
     }
   else 
     create_wildcard_listeners();
+ 
+#ifdef HAVE_DHCP6
+  /* after enumerate_interfaces() */
+  if (daemon->doing_dhcp6 || daemon->doing_ra)
+    join_multicast(1);
+#endif
   
   if (daemon->port != 0)
     cache_init();
@@ -614,90 +635,27 @@ int main (int argc, char **argv)
 
   if (daemon->max_logs != 0)
     my_syslog(LOG_INFO, _("asynchronous logging enabled, queue limit is %d messages"), daemon->max_logs);
- 
-  if (daemon->ra_contexts)
-    my_syslog(MS_DHCP | LOG_INFO, _("IPv6 router advertisement enabled"));
+  
 
 #ifdef HAVE_DHCP
-  if (daemon->dhcp || daemon->dhcp6 || daemon->ra_contexts)
-    {
-      struct dhcp_context *dhcp_tmp;
-      int family = AF_INET;
-      dhcp_tmp = daemon->dhcp;
-     
-#ifdef HAVE_DHCP6
-    again:
-#endif
-      for (; dhcp_tmp; dhcp_tmp = dhcp_tmp->next)
-	{
-	  void *start = &dhcp_tmp->start;
-	  void *end = &dhcp_tmp->end;
-	  	  
-#ifdef HAVE_DHCP6
-	  if (family == AF_INET6)
-	    {
-	      start = &dhcp_tmp->start6;
-	      end = &dhcp_tmp->end6;
-	      struct in6_addr subnet = dhcp_tmp->start6;
-	      setaddr6part(&subnet, 0);
-	      inet_ntop(AF_INET6, &subnet, daemon->dhcp_buff2, 256);
-	    }
-#endif
-	  
-	  if (family != AF_INET && (dhcp_tmp->flags & CONTEXT_DEPRECATE))
-	    strcpy(daemon->namebuff, _("prefix deprecated"));
-	  else
-	    {
-	      char *p = daemon->namebuff;
-	      p += sprintf(p, _("lease time "));
-	      prettyprint_time(p, dhcp_tmp->lease_time);
-	    }
-	  
-	  inet_ntop(family, start, daemon->dhcp_buff, 256);
-	  inet_ntop(family, end, daemon->dhcp_buff3, 256);
-	  if ((dhcp_tmp->flags & CONTEXT_DHCP) || family == AF_INET) 
-	    my_syslog(MS_DHCP | LOG_INFO, 
-		      (dhcp_tmp->flags & CONTEXT_RA_STATELESS) ? 
-		      _("%s stateless on %s%.0s%.0s") :
-		      (dhcp_tmp->flags & CONTEXT_STATIC) ? 
-		      _("%s, static leases only on %.0s%s, %s") :
-		      (dhcp_tmp->flags & CONTEXT_PROXY) ?
-		      _("%s, proxy on subnet %.0s%s%.0s") :
-		      _("%s, IP range %s -- %s, %s"),
-		      (family != AF_INET) ? "DHCPv6" : "DHCP",
-		      daemon->dhcp_buff, daemon->dhcp_buff3, daemon->namebuff);
+  for (context = daemon->dhcp; context; context = context->next)
+    log_context(AF_INET, context);
 
-	  if (dhcp_tmp->flags & CONTEXT_RA_NAME)
-	    my_syslog(MS_DHCP | LOG_INFO, _("DHCPv4-derived IPv6 names on %s"), 
-		      daemon->dhcp_buff2);
-	  if (dhcp_tmp->flags & (CONTEXT_RA_ONLY | CONTEXT_RA_NAME | CONTEXT_RA_STATELESS))
-	    {
-	      if (!(dhcp_tmp->flags & CONTEXT_DEPRECATE))
-		{
-		  char *p = daemon->namebuff;
-		  p += sprintf(p, _("prefix valid "));
-		  prettyprint_time(p, dhcp_tmp->lease_time > 7200 ? dhcp_tmp->lease_time : 7200);
-		}
-	      my_syslog(MS_DHCP | LOG_INFO, _("SLAAC on %s %s"), 
-			daemon->dhcp_buff2, daemon->namebuff);
-	    }
-	}
-      
-#ifdef HAVE_DHCP6
-      if (family == AF_INET)
-	{
-	  family = AF_INET6;
-	  if (daemon->ra_contexts)
-	    dhcp_tmp = daemon->ra_contexts;
-	  else
-	    dhcp_tmp = daemon->dhcp6;
-	  goto again;
-	}
-#endif
+#  ifdef HAVE_DHCP6
+  for (context = daemon->dhcp6; context; context = context->next)
+    log_context(AF_INET6, context);
 
-    }
-#endif
+  if (daemon->doing_dhcp6 || daemon->doing_ra)
+    dhcp_construct_contexts(now);
+  
+  if (option_bool(OPT_RA))
+    my_syslog(MS_DHCP | LOG_INFO, _("IPv6 router advertisement enabled"));
+#  endif
 
+  /* after dhcp_contruct_contexts */
+  if (daemon->dhcp || daemon->doing_dhcp6)
+    lease_find_interfaces(now);
+#endif
 
 #ifdef HAVE_TFTP
 	if (option_bool(OPT_TFTP))
@@ -804,13 +762,13 @@ int main (int argc, char **argv)
 #endif
 
 #ifdef HAVE_DHCP6
-      if (daemon->dhcp6)
+      if (daemon->doing_dhcp6)
 	{
 	  FD_SET(daemon->dhcp6fd, &rset);
 	  bump_maxfd(daemon->dhcp6fd, &maxfd);
 	}
 
-      if (daemon->ra_contexts)
+      if (daemon->doing_ra)
 	{
 	  FD_SET(daemon->icmp6fd, &rset);
 	  bump_maxfd(daemon->icmp6fd, &maxfd); 
@@ -862,19 +820,22 @@ int main (int argc, char **argv)
       now = dnsmasq_time();
 
       check_log_writer(&wset);
-      
+
+      /* prime. */
+      enumerate_interfaces(1);
+
       /* Check the interfaces to see if any have exited DAD state
 	 and if so, bind the address. */
       if (is_dad_listeners())
 	{
-	  enumerate_interfaces();
+	  enumerate_interfaces(0);
 	  /* NB, is_dad_listeners() == 1 --> we're binding interfaces */
 	  create_bound_listeners(0);
 	}
 
 #ifdef HAVE_LINUX_NETWORK
       if (FD_ISSET(daemon->netlinkfd, &rset))
-	netlink_multicast();
+	netlink_multicast(now);
 #endif
 
       /* Check for changes to resolv files once per second max. */
@@ -922,11 +883,11 @@ int main (int argc, char **argv)
 	}
 
 #ifdef HAVE_DHCP6
-      if (daemon->dhcp6 && FD_ISSET(daemon->dhcp6fd, &rset))
+      if (daemon->doing_dhcp6 && FD_ISSET(daemon->dhcp6fd, &rset))
 	dhcp6_packet(now);
 
-      if (daemon->ra_contexts && FD_ISSET(daemon->icmp6fd, &rset))
-	icmp6_packet();
+      if (daemon->doing_ra && FD_ISSET(daemon->icmp6fd, &rset))
+	icmp6_packet(now);
 #endif
 
 #  ifdef HAVE_SCRIPT
@@ -1106,13 +1067,13 @@ static void async_event(int pipe, time_t now)
 	
       case EVENT_ALARM:
 #ifdef HAVE_DHCP
-	if (daemon->dhcp || daemon->dhcp6)
+	if (daemon->dhcp || daemon->doing_dhcp6)
 	  {
 	    lease_prune(NULL, now);
 	    lease_update_file(now);
 	  }
 #ifdef HAVE_DHCP6
-	else if (daemon->ra_contexts)
+	else if (daemon->doing_ra)
 	  /* Not doing DHCP, so no lease system, manage alarms for ra only */
 	    send_alarm(periodic_ra(now), now);
 #endif
@@ -1269,7 +1230,7 @@ void clear_cache_and_reload(time_t now)
     cache_reload();
   
 #ifdef HAVE_DHCP
-  if (daemon->dhcp || daemon->dhcp6)
+  if (daemon->dhcp || daemon->doing_dhcp6)
     {
       if (option_bool(OPT_ETHERS))
 	dhcp_read_ethers();
@@ -1280,7 +1241,7 @@ void clear_cache_and_reload(time_t now)
       lease_update_dns(1);
     }
 #ifdef HAVE_DHCP6
-  else if (daemon->ra_contexts)
+  else if (daemon->doing_ra)
     /* Not doing DHCP, so no lease system, manage 
        alarms for ra only */
     send_alarm(periodic_ra(now), now);
@@ -1384,7 +1345,7 @@ static void check_dns_listeners(fd_set *set, time_t now)
 
       if (listener->tcpfd != -1 && FD_ISSET(listener->tcpfd, set))
 	{
-	  int confd;
+	  int confd, client_ok = 1;
 	  struct irec *iface = NULL;
 	  pid_t p;
 	  union mysockaddr tcp_addr;
@@ -1392,28 +1353,74 @@ static void check_dns_listeners(fd_set *set, time_t now)
 
 	  while ((confd = accept(listener->tcpfd, NULL, NULL)) == -1 && errno == EINTR);
 	  
-	  if (confd == -1 ||
-	      getsockname(confd, (struct sockaddr *)&tcp_addr, &tcp_len) == -1)
+	  if (confd == -1)
 	    continue;
 	  
-	  if (option_bool(OPT_NOWILD) || option_bool(OPT_CLEVERBIND))
-	    iface = listener->iface; /* May be NULL */
-	  else
+	  if (getsockname(confd, (struct sockaddr *)&tcp_addr, &tcp_len) == -1)
 	    {
-	      /* Check for allowed interfaces when binding the wildcard address:
-		 we do this by looking for an interface with the same address as 
-		 the local address of the TCP connection, then looking to see if that's
-		 an allowed interface. As a side effect, we get the netmask of the
-		 interface too, for localisation. */
-	      
-	      /* interface may be new since startup */
-	      if (enumerate_interfaces())
-		for (iface = daemon->interfaces; iface; iface = iface->next)
-		  if (sockaddr_isequal(&iface->addr, &tcp_addr))
-		    break;
+	      close(confd);
+	      continue;
 	    }
 	  
-	  if (!iface && !(option_bool(OPT_NOWILD) || option_bool(OPT_CLEVERBIND)))
+	  /* Make sure that the interface list is up-to-date.
+	     
+	     We do this here as we may need the results below, and
+	     the DNS code needs them for --interface-name stuff.
+
+	     Multiple calls to enumerate_interfaces() per select loop are
+	     inhibited, so calls to it in the child process (which doesn't select())
+	     have no effect. This avoids two processes reading from the same
+	     netlink fd and screwing the pooch entirely.
+	  */
+ 
+	  enumerate_interfaces(0);
+	  
+	  if (option_bool(OPT_NOWILD))
+	    iface = listener->iface; /* May be NULL */
+	  else 
+	    {
+	      int if_index;
+	      char intr_name[IF_NAMESIZE];
+	      
+	      /* if we can find the arrival interface, check it's one that's allowed */
+	      if ((if_index = tcp_interface(confd, tcp_addr.sa.sa_family)) != 0 &&
+		  indextoname(listener->tcpfd, if_index, intr_name))
+		{
+		  struct all_addr addr;
+		  addr.addr.addr4 = tcp_addr.in.sin_addr;
+#ifdef HAVE_IPV6
+		  if (tcp_addr.sa.sa_family == AF_INET6)
+		    addr.addr.addr6 = tcp_addr.in6.sin6_addr;
+#endif
+		  
+		  for (iface = daemon->interfaces; iface; iface = iface->next)
+		    if (iface->index == if_index)
+		      break;
+		  
+		  if (!iface && !loopback_exception(listener->tcpfd, tcp_addr.sa.sa_family, &addr, intr_name))
+		    client_ok = 0;
+		}
+	      
+	      if (option_bool(OPT_CLEVERBIND))
+		iface = listener->iface; /* May be NULL */
+	      else
+		{
+		  /* Check for allowed interfaces when binding the wildcard address:
+		     we do this by looking for an interface with the same address as 
+		     the local address of the TCP connection, then looking to see if that's
+		     an allowed interface. As a side effect, we get the netmask of the
+		     interface too, for localisation. */
+		  
+		  for (iface = daemon->interfaces; iface; iface = iface->next)
+		    if (sockaddr_isequal(&iface->addr, &tcp_addr))
+		      break;
+		  
+		  if (!iface)
+		    client_ok = 0;
+		}
+	    }
+	  
+	  if (!client_ok)
 	    {
 	      shutdown(confd, SHUT_RDWR);
 	      close(confd);
@@ -1440,11 +1447,18 @@ static void check_dns_listeners(fd_set *set, time_t now)
 	      struct server *s; 
 	      int flags;
 	      struct in_addr netmask;
+	      int auth_dns;
 
 	      if (iface)
-		netmask = iface->netmask;
+		{
+		  netmask = iface->netmask;
+		  auth_dns = iface->dns_auth;
+		}
 	      else
-		netmask.s_addr = 0;
+		{
+		  netmask.s_addr = 0;
+		  auth_dns = 0;
+		}
 
 #ifndef NO_FORK
 	      /* Arrange for SIGALARM after CHILD_LIFETIME seconds to
@@ -1463,7 +1477,7 @@ static void check_dns_listeners(fd_set *set, time_t now)
 	      if ((flags = fcntl(confd, F_GETFL, 0)) != -1)
 		fcntl(confd, F_SETFL, flags & ~O_NONBLOCK);
 	      
-	      buff = tcp_request(confd, now, &tcp_addr, netmask);
+	      buff = tcp_request(confd, now, &tcp_addr, netmask, auth_dns);
 	       
 	      shutdown(confd, SHUT_RDWR);
 	      close(confd);
@@ -1576,7 +1590,7 @@ int icmp_ping(struct in_addr addr)
       set_log_writer(&wset, &maxfd);
       
 #ifdef HAVE_DHCP6
-      if (daemon->ra_contexts)
+      if (daemon->doing_ra)
 	{
 	  FD_SET(daemon->icmp6fd, &rset);
 	  bump_maxfd(daemon->icmp6fd, &maxfd); 
@@ -1595,8 +1609,8 @@ int icmp_ping(struct in_addr addr)
       check_dns_listeners(&rset, now);
 
 #ifdef HAVE_DHCP6
-      if (daemon->ra_contexts && FD_ISSET(daemon->icmp6fd, &rset))
-	icmp6_packet();
+      if (daemon->doing_ra && FD_ISSET(daemon->icmp6fd, &rset))
+	icmp6_packet(now);
 #endif
       
 #ifdef HAVE_TFTP

src/dnsmasq.h

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -14,7 +14,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#define COPYRIGHT "Copyright (c) 2000-2012 Simon Kelley" 
+#define COPYRIGHT "Copyright (c) 2000-2013 Simon Kelley" 
 
 #ifndef NO_LARGEFILE
 /* Ensure we can use files >2GB (log files may grow this big) */
@@ -278,6 +278,20 @@ struct cname {
   struct cname *next;
 };
 
+struct auth_zone {
+  char *domain;
+  struct subnet {
+    int is6, prefixlen;
+    struct in_addr addr4;
+#ifdef HAVE_IPV6
+    struct in6_addr addr6;
+#endif
+    struct subnet *next;
+  } *subnet;
+  struct auth_zone *next;
+};
+
+
 struct host_record {
   struct name_list {
     char *name;
@@ -293,6 +307,13 @@ struct host_record {
 struct interface_name {
   char *name; /* domain name */
   char *intr; /* interface name */
+  struct addrlist {
+    struct all_addr addr;
+    struct addrlist *next;
+  } *addr4;
+#ifdef HAVE_IPV6
+  struct addrlist *addr6;
+#endif
   struct interface_name *next;
 };
 
@@ -357,6 +378,8 @@ struct crec {
 #define F_SERVER    (1u<<18)
 #define F_QUERY     (1u<<19)
 #define F_NOERR     (1u<<20)
+#define F_AUTH      (1u<<21)
+
 /* composites */
 #define F_TYPE      (F_IPV4 | F_IPV6 | F_DNSKEY | F_DS) /* Only one may be set */
 
@@ -373,6 +396,11 @@ union mysockaddr {
 #endif
 };
 
+/* bits in flag param to IPv6 callbacks from iface_enumerate() */
+#define IFACE_TENTATIVE   1
+#define IFACE_DEPRECATED  2
+
+
 #define SERV_FROM_RESOLV       1  /* 1 for servers from resolv, 0 for command line. */
 #define SERV_NO_ADDR           2  /* no server, this domain is local only */
 #define SERV_LITERAL_ADDRESS   4  /* addr is the answer, not the server */ 
@@ -409,11 +437,17 @@ struct server {
   struct server *next; 
 };
 
+struct ipsets {
+  char **sets;
+  char *domain;
+  struct ipsets *next;
+};
+
 struct irec {
   union mysockaddr addr;
   struct in_addr netmask; /* only valid for IPv4 */
-  int tftp_ok, dhcp_ok, mtu, done, dad;
-  char *name;
+  int tftp_ok, dhcp_ok, mtu, done, dad, dns_auth, index, multicast_done;
+  char *name; 
   struct irec *next;
 };
 
@@ -516,6 +550,7 @@ struct dhcp_lease {
     int backoff; /* zero -> confirmed */
     struct slaac_address *next;
   } *slaac_address;
+  int vendorclass_count;
 #endif
   struct dhcp_lease *next;
 };
@@ -572,6 +607,7 @@ struct dhcp_config {
 #define CONFIG_DECLINED       1024    /* address declined by client */
 #define CONFIG_BANK           2048    /* from dhcp hosts file */
 #define CONFIG_ADDR6          4096
+#define CONFIG_WILDCARD       8192
 
 struct dhcp_opt {
   int opt, len, flags;
@@ -644,14 +680,22 @@ struct dhcp_bridge {
 };
 
 struct cond_domain {
-  char *domain;
+  char *domain, *prefix;
   struct in_addr start, end;
 #ifdef HAVE_IPV6
   struct in6_addr start6, end6;
 #endif
   int is6;
   struct cond_domain *next;
+}; 
+
+#ifdef OPTION6_PREFIX_CLASS 
+struct prefix_class {
+  int class;
+  struct dhcp_netid tag;
+  struct prefix_class *next;
 };
+#endif
 
 struct dhcp_context {
   unsigned int lease_time, addr_epoch;
@@ -662,7 +706,9 @@ struct dhcp_context {
   struct in6_addr start6, end6; /* range of available addresses */
   struct in6_addr local6;
   int prefix, if_index;
-  time_t ra_time;
+  unsigned int valid, preferred;
+  time_t ra_time, ra_short_period_start;
+  char *template_interface;
 #endif
   int flags;
   struct dhcp_netid netid, *filter;
@@ -679,6 +725,13 @@ struct dhcp_context {
 #define CONTEXT_RA_STATELESS 128
 #define CONTEXT_DHCP         256
 #define CONTEXT_DEPRECATE    512
+#define CONTEXT_TEMPLATE    1024    /* create contexts using addresses */
+#define CONTEXT_CONSTRUCTED 2048
+#define CONTEXT_GC          4096
+#define CONTEXT_RA          8192
+#define CONTEXT_CONF_USED  16384
+#define CONTEXT_USED       32768
+#define CONTEXT_NOAUTH     65536
 
 struct ping_result {
   struct in_addr addr;
@@ -733,27 +786,32 @@ extern struct daemon {
   struct ptr_record *ptr;
   struct host_record *host_records, *host_records_tail;
   struct cname *cnames;
+  struct auth_zone *auth_zones;
   struct interface_name *int_names;
   char *mxtarget;
   char *lease_file; 
   char *username, *groupname, *scriptuser;
   char *luascript;
+  char *authserver, *hostmaster;
+  struct iname *authinterface;
+  struct name_list *secondary_forward_server;
   int group_set, osport;
   char *domain_suffix;
-  struct cond_domain *cond_domain;
+  struct cond_domain *cond_domain, *synth_domains;
   char *runfile; 
   char *lease_change_command;
-  struct iname *if_names, *if_addrs, *if_except, *dhcp_except;
+  struct iname *if_names, *if_addrs, *if_except, *dhcp_except, *auth_peers;
   struct bogus_addr *bogus_addr;
   struct server *servers;
+  struct ipsets *ipsets;
   int log_fac; /* log facility */
   char *log_file; /* optional log file */
   int max_logs;  /* queue limit */
   int cachesize, ftabsize;
   int port, query_port, min_port;
-  unsigned long local_ttl, neg_ttl, max_ttl, max_cache_ttl;
+  unsigned long local_ttl, neg_ttl, max_ttl, max_cache_ttl, auth_ttl;
   struct hostsfile *addn_hosts;
-  struct dhcp_context *dhcp, *dhcp6, *ra_contexts;
+  struct dhcp_context *dhcp, *dhcp6;
   struct dhcp_config *dhcp_conf;
   struct dhcp_opt *dhcp_opts, *dhcp_match, *dhcp_opts6, *dhcp_match6;
   struct dhcp_vendor *dhcp_vendors;
@@ -764,6 +822,7 @@ extern struct daemon {
   struct addr_list *override_relays;
   int override;
   int enable_pxe;
+  int doing_ra, doing_dhcp6;
   struct dhcp_netid_list *dhcp_ignore, *dhcp_ignore_names, *dhcp_gen_names; 
   struct dhcp_netid_list *force_broadcast, *bootp_dynamic;
   struct hostsfile *dhcp_hosts_file, *dhcp_opts_file;
@@ -778,6 +837,10 @@ extern struct daemon {
   unsigned int duid_enterprise, duid_config_len;
   unsigned char *duid_config;
   char *dbus_name;
+  unsigned long soa_sn, soa_refresh, soa_retry, soa_expiry;
+#ifdef OPTION6_PREFIX_CLASS 
+  struct prefix_class *prefix_classes;
+#endif
 
   /* globally used stuff for DNS */
   char *packet; /* packet buffer */
@@ -835,7 +898,7 @@ extern struct daemon {
 void cache_init(void);
 void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg); 
 char *record_source(int index);
-void querystr(char *str, unsigned short type);
+void querystr(char *desc, char *str, unsigned short type);
 struct crec *cache_find_by_addr(struct crec *crecp,
 				struct all_addr *addr, time_t now, 
 				unsigned short prot);
@@ -851,15 +914,20 @@ struct in_addr a_record_from_hosts(char *name, time_t now);
 void cache_unhash_dhcp(void);
 void dump_cache(time_t now);
 char *cache_get_name(struct crec *crecp);
-char *get_domain(struct in_addr addr);
-#ifdef HAVE_IPV6
-char *get_domain6(struct in6_addr *addr);
-#endif
+struct crec *cache_enumerate(int init);
 #ifdef HAVE_DNSSEC
 struct keydata *keydata_alloc(char *data, size_t len);
 void keydata_free(struct keydata *blocks);
 #endif
 
+/* domain.c */
+char *get_domain(struct in_addr addr);
+#ifdef HAVE_IPV6
+char *get_domain6(struct in6_addr *addr);
+#endif
+int is_name_synthetic(int flags, char *name, struct all_addr *addr);
+int is_rev_synth(int flag, struct all_addr *addr, char *name);
+
 /* rfc1035.c */
 unsigned int extract_request(struct dns_header *header, size_t qlen, 
 			       char *name, unsigned short *typep);
@@ -867,7 +935,8 @@ size_t setup_reply(struct dns_header *header, size_t  qlen,
 		   struct all_addr *addrp, unsigned int flags,
 		   unsigned long local_ttl);
 int extract_addresses(struct dns_header *header, size_t qlen, char *namebuff, 
-		      time_t now, int is_sign, int checkrebind, int checking_disabled);
+		      time_t now, char **ipsets, int is_sign, int checkrebind,
+		      int checking_disabled);
 size_t answer_request(struct dns_header *header, char *limit, size_t qlen,  
 		   struct in_addr local_addr, struct in_addr local_netmask, time_t now);
 int check_for_bogus_wildcard(struct dns_header *header, size_t qlen, char *name, 
@@ -879,6 +948,18 @@ unsigned int questions_crc(struct dns_header *header, size_t plen, char *buff);
 size_t resize_packet(struct dns_header *header, size_t plen, 
 		  unsigned char *pheader, size_t hlen);
 size_t add_mac(struct dns_header *header, size_t plen, char *limit, union mysockaddr *l3);
+int add_resource_record(struct dns_header *header, char *limit, int *truncp,
+			int nameoffset, unsigned char **pp, unsigned long ttl, 
+			int *offset, unsigned short type, unsigned short class, char *format, ...);
+unsigned char *skip_questions(struct dns_header *header, size_t plen);
+int extract_name(struct dns_header *header, size_t plen, unsigned char **pp, 
+		 char *name, int isExtract, int extrabytes);
+int in_arpa_name_2_addr(char *namein, struct all_addr *addrp);
+
+/* auth.c */
+#ifdef HAVE_AUTH
+size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t now, union mysockaddr *peer_addr);
+#endif
 
 /* util.c */
 void rand_init(void);
@@ -911,6 +992,8 @@ char *print_mac(char *buff, unsigned char *mac, int len);
 void bump_maxfd(int fd, int *max);
 int read_write(int fd, unsigned char *packet, int size, int rw);
 
+int wildcard_match(const char* wildcard, const char* match);
+
 /* log.c */
 void die(char *message, char *arg1, int exit_code);
 int log_start(struct passwd *ent_pw, int errfd);
@@ -935,7 +1018,7 @@ char *parse_server(char *arg, union mysockaddr *addr,
 void reply_query(int fd, int family, time_t now);
 void receive_query(struct listener *listen, time_t now);
 unsigned char *tcp_request(int confd, time_t now,
-			   union mysockaddr *local_addr, struct in_addr netmask);
+			   union mysockaddr *local_addr, struct in_addr netmask, int auth_dns);
 void server_gone(struct server *server);
 struct frec *get_new_frec(time_t now, int *wait);
 int send_from(int fd, int nowild, char *packet, size_t len, 
@@ -949,16 +1032,21 @@ int random_sock(int family);
 void pre_allocate_sfds(void);
 int reload_servers(char *fname);
 void check_servers(void);
-int enumerate_interfaces();
+int enumerate_interfaces(int reset);
 void create_wildcard_listeners(void);
 void create_bound_listeners(int die);
 int is_dad_listeners(void);
-int iface_check(int family, struct all_addr *addr, char *name);
+int iface_check(int family, struct all_addr *addr, char *name, int *auth_dns);
+int loopback_exception(int fd, int family, struct all_addr *addr, char *name);
+int label_exception(int index, int family, struct all_addr *addr);
 int fix_fd(int fd);
-struct in_addr get_ifaddr(char *intr);
+int tcp_interface(int fd, int af);
 #ifdef HAVE_IPV6
 int set_ipv6pktinfo(int fd);
 #endif
+#ifdef HAVE_DHCP6
+void join_multicast(int dienow);
+#endif
 
 /* dhcp.c */
 #ifdef HAVE_DHCP
@@ -994,10 +1082,12 @@ struct dhcp_lease *lease4_allocate(struct in_addr addr);
 struct dhcp_lease *lease6_allocate(struct in6_addr *addrp, int lease_type);
 struct dhcp_lease *lease6_find(unsigned char *clid, int clid_len, 
 			       int lease_type, int iaid, struct in6_addr *addr);
-void lease6_filter(int lease_type, int iaid, struct dhcp_context *context);
+void lease6_reset(void);
+struct dhcp_lease *lease6_find_by_client(struct dhcp_lease *first, int lease_type, unsigned char *clid, int clid_len, int iaid);
 struct dhcp_lease *lease6_find_by_addr(struct in6_addr *net, int prefix, u64 addr);
 u64 lease_find_max_addr6(struct dhcp_context *context);
 void lease_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface);
+void lease_update_slaac(time_t now);
 #endif
 void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr,
 		      unsigned char *clid, int hw_len, int hw_type, int clid_len, time_t now, int force);
@@ -1040,7 +1130,7 @@ void poll_resolv(int force, int do_reload, time_t now);
 /* netlink.c */
 #ifdef HAVE_LINUX_NETWORK
 void netlink_init(void);
-void netlink_multicast(void);
+void netlink_multicast(time_t now);
 #endif
 
 /* bpf.c */
@@ -1063,6 +1153,12 @@ void emit_dbus_signal(int action, struct dhcp_lease *lease, char *hostname);
 #  endif
 #endif
 
+/* ipset.c */
+#ifdef HAVE_IPSET
+void ipset_init(void);
+int add_to_ipset(const char *setname, const struct all_addr *ipaddr, int flags, int remove);
+#endif
+
 /* helper.c */
 #if defined(HAVE_SCRIPT)
 int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd);
@@ -1092,15 +1188,17 @@ int get_incoming_mark(union mysockaddr *peer_addr, struct all_addr *local_addr,
 #ifdef HAVE_DHCP6
 void dhcp6_init(void);
 void dhcp6_packet(time_t now);
-int address6_allocate(struct dhcp_context *context,  unsigned char *clid, int clid_len, 
-		      int serial, struct dhcp_netid *netids, struct in6_addr *ans);
-int is_addr_in_context6(struct dhcp_context *context, struct in6_addr *addr);
+struct dhcp_context *address6_allocate(struct dhcp_context *context,  unsigned char *clid, int clid_len, 
+				       int iaid, int serial, struct dhcp_netid *netids, int plain_range, struct in6_addr *ans);
+int config_valid(struct dhcp_config *config, struct dhcp_context *context, struct in6_addr *addr);
 struct dhcp_context *address6_available(struct dhcp_context *context, 
 					struct in6_addr *taddr,
-					struct dhcp_netid *netids);
-struct dhcp_context *narrow_context6(struct dhcp_context *context, 
-				     struct in6_addr *taddr,
-				     struct dhcp_netid *netids);
+					struct dhcp_netid *netids,
+					int plain_range);
+struct dhcp_context *address6_valid(struct dhcp_context *context, 
+				    struct in6_addr *taddr,
+				    struct dhcp_netid *netids,
+				    int plain_range);
 struct dhcp_config *find_config6(struct dhcp_config *configs,
 				 struct dhcp_context *context,
 				 unsigned char *duid, int duid_len,
@@ -1108,6 +1206,7 @@ struct dhcp_config *find_config6(struct dhcp_config *configs,
 struct dhcp_config *config_find_by_address6(struct dhcp_config *configs, struct in6_addr *net, 
 					    int prefix, u64 addr);
 void make_duid(time_t now);
+void dhcp_construct_contexts(time_t now);
 #endif
 
 /* rfc3315.c */
@@ -1129,8 +1228,8 @@ void log_tags(struct dhcp_netid *netid, u32 xid);
 int match_bytes(struct dhcp_opt *o, unsigned char *p, int len);
 void dhcp_update_configs(struct dhcp_config *configs);
 void display_opts(void);
-u16 lookup_dhcp_opt(int prot, char *name);
-u16 lookup_dhcp_len(int prot, u16 val);
+int lookup_dhcp_opt(int prot, char *name);
+int lookup_dhcp_len(int prot, int val);
 char *option_string(int prot, unsigned int opt, unsigned char *val, 
 		    int opt_len, char *buf, int buf_len);
 #ifdef HAVE_LINUX_NETWORK
@@ -1138,8 +1237,8 @@ void bindtodevice(int fd);
 #endif
 #  ifdef HAVE_DHCP6
 void display_opts6(void);
-void join_multicast(void);
 #  endif
+void log_context(int family, struct dhcp_context *context);
 #endif
 
 /* outpacket.c */
@@ -1158,16 +1257,14 @@ void put_opt6_string(char *s);
 /* radv.c */
 #ifdef HAVE_DHCP6
 void ra_init(time_t now);
-void icmp6_packet(void);
+void icmp6_packet(time_t now);
 time_t periodic_ra(time_t now);
 void ra_start_unsolicted(time_t now, struct dhcp_context *context);
 #endif
 
 /* slaac.c */ 
 #ifdef HAVE_DHCP6
-void build_subnet_map(void);
 void slaac_add_addrs(struct dhcp_lease *lease, time_t now, int force);
 time_t periodic_slaac(time_t now, struct dhcp_lease *leases);
 void slaac_ping_reply(struct in6_addr *sender, unsigned char *packet, char *interface, struct dhcp_lease *leases);
-void schedule_subnet_map(void);
 #endif

src/domain.c

@@ -0,0 +1,232 @@
+/* dnsmasq is Copyright (c) 2000-2013 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"
+
+
+static struct cond_domain *search_domain(struct in_addr addr, struct cond_domain *c);
+#ifdef HAVE_IPV6
+static struct cond_domain *search_domain6(struct in6_addr *addr, struct cond_domain *c);
+#endif
+
+
+int is_name_synthetic(int flags, char *name, struct all_addr *addr)
+{
+  char *p;
+  struct cond_domain *c = NULL;
+  int prot = AF_INET;
+
+#ifdef HAVE_IPV6
+  if (flags & F_IPV6)
+    prot = AF_INET6;
+#endif
+
+  for (c = daemon->synth_domains; c; c = c->next)
+    {
+      int found = 0;
+      char *tail, *pref;
+      
+      for (tail = name, pref = c->prefix; *tail != 0 && pref && *pref != 0; tail++, pref++)
+	{
+	  unsigned int c1 = (unsigned char) *pref;
+	  unsigned int c2 = (unsigned char) *tail;
+	  
+	  if (c1 >= 'A' && c1 <= 'Z')
+	    c1 += 'a' - 'A';
+	  if (c2 >= 'A' && c2 <= 'Z')
+	    c2 += 'a' - 'A';
+	  
+	  if (c1 != c2)
+	    break;
+	}
+      
+      if (pref && *pref != 0)
+	continue; /* prefix match fail */
+      
+      /* NB, must not alter name if we return zero */
+      for (p = tail; *p; p++)
+	{
+	  char c = *p;
+	  
+	  if ((c >='0' && c <= '9') || c == '-')
+	    continue;
+	  
+#ifdef HAVE_IPV6
+	  if (prot == AF_INET6 && ((c >='A' && c <= 'F') || (c >='a' && c <= 'f'))) 
+	    continue;
+#endif
+	  
+	  break;
+	}
+      
+      if (*p != '.')
+	continue;
+      
+      *p = 0;	
+      
+      /* swap . or : for - */
+      for (p = tail; *p; p++)
+	if (*p == '-')
+	  {
+	    if (prot == AF_INET)
+	      *p = '.';
+#ifdef HAVE_IPV6
+	    else
+	      *p = ':';
+#endif
+	  }
+      
+      if (hostname_isequal(c->domain, p+1) && inet_pton(prot, tail, addr))
+	{
+	  if (prot == AF_INET)
+	    {
+	      if (!c->is6 &&
+		  ntohl(addr->addr.addr4.s_addr) >= ntohl(c->start.s_addr) &&
+		  ntohl(addr->addr.addr4.s_addr) <= ntohl(c->end.s_addr))
+		found = 1;
+	    }
+#ifdef HAVE_IPV6
+	  else
+	    {
+	      u64 addrpart = addr6part(&addr->addr.addr6);
+	      
+	      if (c->is6 &&
+		  is_same_net6(&addr->addr.addr6, &c->start6, 64) &&
+		  addrpart >= addr6part(&c->start6) &&
+		  addrpart <= addr6part(&c->end6))
+		found = 1;
+	    }
+#endif
+	}
+      
+      /* restore name */
+      for (p = tail; *p; p++)
+	if (*p == '.' || *p == ':')
+	  *p = '-';
+      
+      *p = '.';
+
+      if (found)
+	return 1;
+    }
+  
+  return 0;
+}
+
+
+int is_rev_synth(int flag, struct all_addr *addr, char *name)
+{
+   struct cond_domain *c;
+
+   if (flag & F_IPV4 && (c = search_domain(addr->addr.addr4, daemon->synth_domains))) 
+     {
+       char *p;
+       
+       *name = 0;
+       if (c->prefix)
+	 strncpy(name, c->prefix, MAXDNAME - ADDRSTRLEN);
+       
+       inet_ntop(AF_INET, &addr->addr.addr4, name + strlen(name), ADDRSTRLEN);
+       for (p = name; *p; p++)
+	 if (*p == '.')
+	   *p = '-';
+
+       strncat(name, ".", MAXDNAME);
+       strncat(name, c->domain, MAXDNAME);
+
+       return 1;
+     }
+
+#ifdef HAVE_IPV6
+   if (flag & F_IPV6 && (c = search_domain6(&addr->addr.addr6, daemon->synth_domains))) 
+     {
+       char *p;
+       
+       *name = 0;
+       if (c->prefix)
+	 strncpy(name, c->prefix, MAXDNAME - ADDRSTRLEN);
+       
+       inet_ntop(AF_INET6, &addr->addr.addr6, name + strlen(name), ADDRSTRLEN);
+
+       /* IPv6 presentation address can start with ":", but valid domain names
+	  cannot start with "-" so prepend a zero in that case. */
+       if (!c->prefix && *name == ':')
+	 {
+	   *name = '0';
+	   inet_ntop(AF_INET6, &addr->addr.addr6, name+1, ADDRSTRLEN);
+	 }
+
+       for (p = name; *p; p++)
+	 if (*p == ':')
+	   *p = '-';
+
+       strncat(name, ".", MAXDNAME);
+       strncat(name, c->domain, MAXDNAME);
+       
+       return 1;
+     }
+#endif
+   
+   return 0;
+}
+
+
+static struct cond_domain *search_domain(struct in_addr addr, struct cond_domain *c)
+{
+  for (; c; c = c->next)
+    if (!c->is6 &&
+	ntohl(addr.s_addr) >= ntohl(c->start.s_addr) &&
+        ntohl(addr.s_addr) <= ntohl(c->end.s_addr))
+      return c;
+
+  return NULL;
+}
+
+char *get_domain(struct in_addr addr)
+{
+  struct cond_domain *c;
+
+  if ((c = search_domain(addr, daemon->cond_domain)))
+    return c->domain;
+
+  return daemon->domain_suffix;
+} 
+
+#ifdef HAVE_IPV6
+static struct cond_domain *search_domain6(struct in6_addr *addr, struct cond_domain *c)
+{
+  u64 addrpart = addr6part(addr);
+  
+  for (; c; c = c->next)
+    if (c->is6 &&
+	is_same_net6(addr, &c->start6, 64) &&
+	addrpart >= addr6part(&c->start6) &&
+        addrpart <= addr6part(&c->end6))
+      return c;
+  
+  return NULL;
+}
+
+char *get_domain6(struct in6_addr *addr)
+{
+  struct cond_domain *c;
+
+  if ((c = search_domain6(addr, daemon->cond_domain)))
+    return c->domain;
+
+  return daemon->domain_suffix;
+} 
+#endif

src/forward.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -328,8 +328,8 @@ static int forward_query(int udpfd, union mysockaddr *udpaddr,
       struct server *firstsentto = start;
       int forwarded = 0;
       
-      if (udpaddr && option_bool(OPT_ADD_MAC))
-	plen = add_mac(header, plen, ((char *) header) + PACKETSZ, udpaddr);
+      if (option_bool(OPT_ADD_MAC))
+	plen = add_mac(header, plen, ((char *) header) + PACKETSZ, &forward->source);
       
       while (1)
 	{ 
@@ -372,7 +372,7 @@ static int forward_query(int udpfd, union mysockaddr *udpaddr,
 		  if (option_bool(OPT_CONNTRACK))
 		    {
 		      unsigned int mark;
-		      if (get_incoming_mark(udpaddr, dst_addr, 0, &mark))
+		      if (get_incoming_mark(&forward->source, &forward->dest, 0, &mark))
 			setsockopt(fd, SOL_SOCKET, SO_MARK, &mark, sizeof(unsigned int));
 		    }
 #endif
@@ -439,9 +439,28 @@ static size_t process_reply(struct dns_header *header, time_t now,
 			    struct server *server, size_t n, int check_rebind, int checking_disabled)
 {
   unsigned char *pheader, *sizep;
+  char **sets = 0;
   int munged = 0, is_sign;
   size_t plen; 
 
+#ifdef HAVE_IPSET
+  /* Similar algorithm to search_servers. */
+  struct ipsets *ipset_pos;
+  unsigned int namelen = strlen(daemon->namebuff);
+  unsigned int matchlen = 0;
+  for (ipset_pos = daemon->ipsets; ipset_pos; ipset_pos = ipset_pos->next) 
+    {
+      unsigned int domainlen = strlen(ipset_pos->domain);
+      char *matchstart = daemon->namebuff + namelen - domainlen;
+      if (namelen >= domainlen && hostname_isequal(matchstart, ipset_pos->domain) &&
+	  (domainlen == 0 || namelen == domainlen || *(matchstart - 1) == '.' ) &&
+	  domainlen >= matchlen) {
+	matchlen = domainlen;
+	sets = ipset_pos->sets;
+      }
+    }
+#endif
+  
   /* If upstream is advertising a larger UDP packet size
      than we allow, trim it so that we don't get overlarge
      requests for the client. We can't do this for signed packets. */
@@ -494,7 +513,7 @@ static size_t process_reply(struct dns_header *header, time_t now,
 	  SET_RCODE(header, NOERROR);
 	}
       
-      if (extract_addresses(header, n, daemon->namebuff, now, is_sign, check_rebind, checking_disabled))
+      if (extract_addresses(header, n, daemon->namebuff, now, sets, is_sign, check_rebind, checking_disabled))
 	{
 	  my_syslog(LOG_WARNING, _("possible DNS-rebind attack detected: %s"), daemon->namebuff);
 	  munged = 1;
@@ -635,6 +654,7 @@ void receive_query(struct listener *listen, time_t now)
   size_t m;
   ssize_t n;
   int if_index = 0;
+  int auth_dns = 0;
   struct iovec iov[1];
   struct msghdr msg;
   struct cmsghdr *cmptr;
@@ -657,17 +677,20 @@ void receive_query(struct listener *listen, time_t now)
   /* packet buffer overwritten */
   daemon->srv_save = NULL;
   
-  if (listen->iface && listen->family == AF_INET && option_bool(OPT_NOWILD))
+  dst_addr_4.s_addr = 0;
+  netmask.s_addr = 0;
+  
+  if (option_bool(OPT_NOWILD) && listen->iface)
     {
-      dst_addr_4 = listen->iface->addr.in.sin_addr;
-      netmask = listen->iface->netmask;
+      auth_dns = listen->iface->dns_auth;
+     
+      if (listen->family == AF_INET)
+	{
+	  dst_addr_4 = listen->iface->addr.in.sin_addr;
+	  netmask = listen->iface->netmask;
+	}
     }
-  else
-    {
-      dst_addr_4.s_addr = 0;
-      netmask.s_addr = 0;
-    }
-
+  
   iov[0].iov_base = daemon->packet;
   iov[0].iov_len = daemon->edns_pktsz;
     
@@ -759,10 +782,18 @@ void receive_query(struct listener *listen, time_t now)
       
       /* enforce available interface configuration */
       
-      if (!indextoname(listen->fd, if_index, ifr.ifr_name) ||
-	  !iface_check(listen->family, &dst_addr, ifr.ifr_name))
+      if (!indextoname(listen->fd, if_index, ifr.ifr_name))
 	return;
       
+      if (!iface_check(listen->family, &dst_addr, ifr.ifr_name, &auth_dns))
+	{
+	   if (!option_bool(OPT_CLEVERBIND))
+	     enumerate_interfaces(0); 
+	   if (!loopback_exception(listen->fd, listen->family, &dst_addr, ifr.ifr_name) &&
+	       !label_exception(if_index, listen->family, &dst_addr))
+	     return;
+	}
+
       if (listen->family == AF_INET && option_bool(OPT_LOCALISE))
 	{
 	  struct irec *iface;
@@ -776,8 +807,8 @@ void receive_query(struct listener *listen, time_t now)
 	      break;
 	  
 	  /* interface may be new */
-	  if (!iface)
-	    enumerate_interfaces(); 
+	  if (!iface && !option_bool(OPT_CLEVERBIND))
+	    enumerate_interfaces(0); 
 	  
 	  for (iface = daemon->interfaces; iface; iface = iface->next)
 	    if (iface->addr.sa.sa_family == AF_INET &&
@@ -796,7 +827,7 @@ void receive_query(struct listener *listen, time_t now)
     {
       char types[20];
 
-      querystr(types, type);
+      querystr(auth_dns ? "auth" : "query", types, type);
 
       if (listen->family == AF_INET) 
 	log_query(F_QUERY | F_IPV4 | F_FORWARD, daemon->namebuff, 
@@ -808,19 +839,32 @@ void receive_query(struct listener *listen, time_t now)
 #endif
     }
 
-  m = answer_request (header, ((char *) header) + PACKETSZ, (size_t)n, 
-		      dst_addr_4, netmask, now);
-  if (m >= 1)
+#ifdef HAVE_AUTH
+  if (auth_dns)
     {
-      send_from(listen->fd, option_bool(OPT_NOWILD) || option_bool(OPT_CLEVERBIND),
-		(char *)header, m, &source_addr, &dst_addr, if_index);
-      daemon->local_answer++;
+      m = answer_auth(header, ((char *) header) + PACKETSZ, (size_t)n, now, &source_addr);
+      if (m >= 1)
+	send_from(listen->fd, option_bool(OPT_NOWILD) || option_bool(OPT_CLEVERBIND),
+		  (char *)header, m, &source_addr, &dst_addr, if_index);
     }
-  else if (forward_query(listen->fd, &source_addr, &dst_addr, if_index,
-			 header, (size_t)n, now, NULL))
-    daemon->queries_forwarded++;
   else
-    daemon->local_answer++;
+#endif
+    {
+      m = answer_request(header, ((char *) header) + PACKETSZ, (size_t)n, 
+			 dst_addr_4, netmask, now);
+      
+      if (m >= 1)
+	{
+	  send_from(listen->fd, option_bool(OPT_NOWILD) || option_bool(OPT_CLEVERBIND),
+		    (char *)header, m, &source_addr, &dst_addr, if_index);
+	  daemon->local_answer++;
+	}
+      else if (forward_query(listen->fd, &source_addr, &dst_addr, if_index,
+			     header, (size_t)n, now, NULL))
+	daemon->queries_forwarded++;
+      else
+	daemon->local_answer++;
+    }
 }
 
 /* The daemon forks before calling this: it should deal with one connection,
@@ -828,17 +872,21 @@ void receive_query(struct listener *listen, time_t now)
    about resources for debug mode, when the fork is suppressed: that's
    done by the caller. */
 unsigned char *tcp_request(int confd, time_t now,
-			   union mysockaddr *local_addr, struct in_addr netmask)
+			   union mysockaddr *local_addr, struct in_addr netmask, int auth_dns)
 {
   size_t size = 0;
   int norebind = 0;
   int checking_disabled;
   size_t m;
-  unsigned short qtype, gotname;
+  unsigned short qtype;
+  unsigned int gotname;
   unsigned char c1, c2;
-  /* Max TCP packet + slop */
-  unsigned char *packet = whine_malloc(65536 + MAXDNAME + RRFIXEDSZ);
-  struct dns_header *header;
+  /* Max TCP packet + slop + size */
+  unsigned char *packet = whine_malloc(65536 + MAXDNAME + RRFIXEDSZ + sizeof(u16));
+  unsigned char *payload = &packet[2];
+  /* largest field in header is 16-bits, so this is still sufficiently aligned */
+  struct dns_header *header = (struct dns_header *)payload;
+  u16 *length = (u16 *)packet;
   struct server *last_server;
   struct in_addr dst_addr_4;
   union mysockaddr peer_addr;
@@ -852,14 +900,12 @@ unsigned char *tcp_request(int confd, time_t now,
       if (!packet ||
 	  !read_write(confd, &c1, 1, 1) || !read_write(confd, &c2, 1, 1) ||
 	  !(size = c1 << 8 | c2) ||
-	  !read_write(confd, packet, size, 1))
+	  !read_write(confd, payload, size, 1))
        	return packet; 
   
       if (size < (int)sizeof(struct dns_header))
 	continue;
       
-      header = (struct dns_header *)packet;
-
       /* save state of "cd" flag in query */
       checking_disabled = header->hb4 & HB4_CD;
        
@@ -870,7 +916,7 @@ unsigned char *tcp_request(int confd, time_t now,
 	{
 	  char types[20];
 	  
-	  querystr(types, qtype);
+	  querystr(auth_dns ? "auth" : "query", types, qtype);
 	  
 	  if (peer_addr.sa.sa_family == AF_INET) 
 	    log_query(F_QUERY | F_IPV4 | F_FORWARD, daemon->namebuff, 
@@ -887,144 +933,146 @@ unsigned char *tcp_request(int confd, time_t now,
       else
 	dst_addr_4.s_addr = 0;
       
-      /* m > 0 if answered from cache */
-      m = answer_request(header, ((char *) header) + 65536, (unsigned int)size, 
-			 dst_addr_4, netmask, now);
-
-      /* Do this by steam now we're not in the select() loop */
-      check_log_writer(NULL); 
-      
-      if (m == 0)
+#ifdef HAVE_AUTH
+      if (auth_dns)
+	m = answer_auth(header, ((char *) header) + 65536, (size_t)size, now, &peer_addr);
+      else
+#endif
 	{
-	  unsigned int flags = 0;
-	  struct all_addr *addrp = NULL;
-	  int type = 0;
-	  char *domain = NULL;
-	   
-	  if (option_bool(OPT_ADD_MAC))
-	    size = add_mac(header, size, ((char *) header) + 65536, &peer_addr);
-	          
-	  if (gotname)
-	    flags = search_servers(now, &addrp, gotname, daemon->namebuff, &type, &domain, &norebind);
+	  /* m > 0 if answered from cache */
+	  m = answer_request(header, ((char *) header) + 65536, (size_t)size, 
+			     dst_addr_4, netmask, now);
 	  
-	  if (type != 0  || option_bool(OPT_ORDER) || !daemon->last_server)
-	    last_server = daemon->servers;
-	  else
-	    last_server = daemon->last_server;
-      
-	  if (!flags && last_server)
+	  /* Do this by steam now we're not in the select() loop */
+	  check_log_writer(NULL); 
+	  
+	  if (m == 0)
 	    {
-	      struct server *firstsendto = NULL;
-	      unsigned int crc = questions_crc(header, (unsigned int)size, daemon->namebuff);
-
-	      /* Loop round available servers until we succeed in connecting to one.
-	         Note that this code subtley ensures that consecutive queries on this connection
-	         which can go to the same server, do so. */
-	      while (1) 
- 		{
-		  if (!firstsendto)
-		    firstsendto = last_server;
-		  else
-		    {
-		      if (!(last_server = last_server->next))
-			last_server = daemon->servers;
-		      
-		      if (last_server == firstsendto)
-			break;
-		    }
+	      unsigned int flags = 0;
+	      struct all_addr *addrp = NULL;
+	      int type = 0;
+	      char *domain = NULL;
 	      
-		  /* server for wrong domain */
-		  if (type != (last_server->flags & SERV_TYPE) ||
-		      (type == SERV_HAS_DOMAIN && !hostname_isequal(domain, last_server->domain)))
-		    continue;
-
-		  if (last_server->tcpfd == -1)
+	      if (option_bool(OPT_ADD_MAC))
+		size = add_mac(header, size, ((char *) header) + 65536, &peer_addr);
+	      
+	      if (gotname)
+		flags = search_servers(now, &addrp, gotname, daemon->namebuff, &type, &domain, &norebind);
+	      
+	      if (type != 0  || option_bool(OPT_ORDER) || !daemon->last_server)
+		last_server = daemon->servers;
+	      else
+		last_server = daemon->last_server;
+	      
+	      if (!flags && last_server)
+		{
+		  struct server *firstsendto = NULL;
+		  unsigned int crc = questions_crc(header, (unsigned int)size, daemon->namebuff);
+		  
+		  /* Loop round available servers until we succeed in connecting to one.
+		     Note that this code subtley ensures that consecutive queries on this connection
+		     which can go to the same server, do so. */
+		  while (1) 
 		    {
-		      if ((last_server->tcpfd = socket(last_server->addr.sa.sa_family, SOCK_STREAM, 0)) == -1)
+		      if (!firstsendto)
+			firstsendto = last_server;
+		      else
+			{
+			  if (!(last_server = last_server->next))
+			    last_server = daemon->servers;
+			  
+			  if (last_server == firstsendto)
+			    break;
+			}
+		      
+		      /* server for wrong domain */
+		      if (type != (last_server->flags & SERV_TYPE) ||
+			  (type == SERV_HAS_DOMAIN && !hostname_isequal(domain, last_server->domain)))
 			continue;
 		      
-		      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))
+		      if (last_server->tcpfd == -1)
+			{
+			  if ((last_server->tcpfd = socket(last_server->addr.sa.sa_family, SOCK_STREAM, 0)) == -1)
+			    continue;
+			  
+			  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))
+			    {
+			      close(last_server->tcpfd);
+			      last_server->tcpfd = -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	
+			}
+		      
+		      *length = htons(size);
+		      
+		      if (!read_write(last_server->tcpfd, packet, size + sizeof(u16), 0) ||
+			  !read_write(last_server->tcpfd, &c1, 1, 1) ||
+			  !read_write(last_server->tcpfd, &c2, 1, 1))
 			{
 			  close(last_server->tcpfd);
 			  last_server->tcpfd = -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	
-		    }
-
-		  c1 = size >> 8;
-		  c2 = size;
-		  
-		  if (!read_write(last_server->tcpfd, &c1, 1, 0) ||
-		      !read_write(last_server->tcpfd, &c2, 1, 0) ||
-		      !read_write(last_server->tcpfd, packet, size, 0) ||
-		      !read_write(last_server->tcpfd, &c1, 1, 1) ||
-		      !read_write(last_server->tcpfd, &c2, 1, 1))
-		    {
-		      close(last_server->tcpfd);
-		      last_server->tcpfd = -1;
-		      continue;
-		    } 
-		  
-		  m = (c1 << 8) | c2;
-		  if (!read_write(last_server->tcpfd, packet, m, 1))
-		    return packet;
-		  
-		  if (!gotname)
-		    strcpy(daemon->namebuff, "query");
-		  if (last_server->addr.sa.sa_family == AF_INET)
-		    log_query(F_SERVER | F_IPV4 | F_FORWARD, daemon->namebuff, 
-			      (struct all_addr *)&last_server->addr.in.sin_addr, NULL); 
+			} 
+		      
+		      m = (c1 << 8) | c2;
+		      if (!read_write(last_server->tcpfd, payload, m, 1))
+			return packet;
+		      
+		      if (!gotname)
+			strcpy(daemon->namebuff, "query");
+		      if (last_server->addr.sa.sa_family == AF_INET)
+			log_query(F_SERVER | F_IPV4 | F_FORWARD, daemon->namebuff, 
+				  (struct all_addr *)&last_server->addr.in.sin_addr, NULL); 
 #ifdef HAVE_IPV6
-		  else
-		    log_query(F_SERVER | F_IPV6 | F_FORWARD, daemon->namebuff, 
-			      (struct all_addr *)&last_server->addr.in6.sin6_addr, NULL);
+		      else
+			log_query(F_SERVER | F_IPV6 | F_FORWARD, daemon->namebuff, 
+				  (struct all_addr *)&last_server->addr.in6.sin6_addr, NULL);
 #endif 
-		  
-		  /* There's no point in updating the cache, since this process will exit and
-		     lose the information after a few queries. We make this call for the alias and 
-		     bogus-nxdomain side-effects. */
-		  /* If the crc of the question section doesn't match the crc we sent, then
-		     someone might be attempting to insert bogus values into the cache by 
-		     sending replies containing questions and bogus answers. */
-		  if (crc == questions_crc(header, (unsigned int)m, daemon->namebuff))
-		    m = process_reply(header, now, last_server, (unsigned int)m, 
-				      option_bool(OPT_NO_REBIND) && !norebind, checking_disabled);
-		  
-		  break;
+		      
+		      /* There's no point in updating the cache, since this process will exit and
+			 lose the information after a few queries. We make this call for the alias and 
+			 bogus-nxdomain side-effects. */
+		      /* If the crc of the question section doesn't match the crc we sent, then
+			 someone might be attempting to insert bogus values into the cache by 
+			 sending replies containing questions and bogus answers. */
+		      if (crc == questions_crc(header, (unsigned int)m, daemon->namebuff))
+			m = process_reply(header, now, last_server, (unsigned int)m, 
+					  option_bool(OPT_NO_REBIND) && !norebind, checking_disabled);
+		      
+		      break;
+		    }
 		}
+	
+	      /* In case of local answer or no connections made. */
+	      if (m == 0)
+		m = setup_reply(header, (unsigned int)size, addrp, flags, daemon->local_ttl);
 	    }
-	  
-	  /* In case of local answer or no connections made. */
-	  if (m == 0)
-	    m = setup_reply(header, (unsigned int)size, addrp, flags, daemon->local_ttl);
 	}
-
+	  
       check_log_writer(NULL);
       
-      c1 = m>>8;
-      c2 = m;
-      if (!read_write(confd, &c1, 1, 0) ||
-	  !read_write(confd, &c2, 1, 0) || 
-	  !read_write(confd, packet, m, 0))
+      *length = htons(m);
+           
+      if (m == 0 || !read_write(confd, packet, m + sizeof(u16), 0))
 	return packet;
     }
 }
@@ -1157,8 +1205,17 @@ struct frec *get_new_frec(time_t now, int *wait)
   /* none available, calculate time 'till oldest record expires */
   if (count > daemon->ftabsize)
     {
+      static time_t last_log = 0;
+      
       if (oldest && wait)
 	*wait = oldest->time + (time_t)TIMEOUT - now;
+      
+      if ((int)difftime(now, last_log) > 5)
+	{
+	  last_log = now;
+	  my_syslog(LOG_WARNING, _("Maximum number of concurrent DNS queries reached (max: %d)"), daemon->ftabsize);
+	}
+
       return NULL;
     }
   

src/helper.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -229,13 +229,6 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd)
 	    }
 	}
        
-      /* expiry or length into dhcp_buff2 */
-#ifdef HAVE_BROKEN_RTC
-      sprintf(daemon->dhcp_buff2, "%u", data.length);
-#else
-      sprintf(daemon->dhcp_buff2, "%lu", (unsigned long)data.expires);
-#endif
-           
       /* supplied data may just exceed normal buffer (unlikely) */
       if ((data.hostname_len + data.ed_len + data.clid_len) > MAXDNAME && 
 	  !(alloc_buff = buf = malloc(data.hostname_len + data.ed_len + data.clid_len)))
@@ -397,6 +390,9 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd)
 		  buf = grab_extradata_lua(buf, end, "cpewan_oui");
 		  buf = grab_extradata_lua(buf, end, "cpewan_serial");   
 		  buf = grab_extradata_lua(buf, end, "cpewan_class");
+		  buf = grab_extradata_lua(buf, end, "circuit_id");
+		  buf = grab_extradata_lua(buf, end, "subscriber_id");
+		  buf = grab_extradata_lua(buf, end, "remote_id");
 		}
 	      
 	      buf = grab_extradata_lua(buf, end, "tags");
@@ -493,8 +489,10 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd)
 	    my_setenv("DNSMASQ_INTERFACE", data.interface, &err);
 	  
 #ifdef HAVE_BROKEN_RTC
+	  sprintf(daemon->dhcp_buff2, "%u", data.length);
 	  my_setenv("DNSMASQ_LEASE_LENGTH", daemon->dhcp_buff2, &err);
 #else
+	  sprintf(daemon->dhcp_buff2, "%lu", (unsigned long)data.expires);
 	  my_setenv("DNSMASQ_LEASE_EXPIRES", daemon->dhcp_buff2, &err); 
 #endif
 	  
@@ -528,10 +526,13 @@ int create_helper(int event_fd, int err_fd, uid_t uid, gid_t gid, long max_fd)
 	      buf = grab_extradata(buf, end, "DNSMASQ_CPEWAN_OUI", &err);
 	      buf = grab_extradata(buf, end, "DNSMASQ_CPEWAN_SERIAL", &err);   
 	      buf = grab_extradata(buf, end, "DNSMASQ_CPEWAN_CLASS", &err);
+	      buf = grab_extradata(buf, end, "DNSMASQ_CIRCUIT_ID", &err);
+	      buf = grab_extradata(buf, end, "DNSMASQ_SUBSCRIBER_ID", &err);
+	      buf = grab_extradata(buf, end, "DNSMASQ_REMOTE_ID", &err);
 	    }
 	  
 	  buf = grab_extradata(buf, end, "DNSMASQ_TAGS", &err);
-	  
+
 	  if (is6)
 	    buf = grab_extradata(buf, end, "DNSMASQ_RELAY_ADDRESS", &err);
 	  else if (data.giaddr.s_addr != 0)
@@ -654,8 +655,9 @@ void queue_script(int action, struct dhcp_lease *lease, char *hostname, time_t n
   unsigned char *p;
   unsigned int hostname_len = 0, clid_len = 0, ed_len = 0;
   int fd = daemon->dhcpfd;
+#ifdef HAVE_DHCP6 
+  int is6 = !!(lease->flags & (LEASE_TA | LEASE_NA));
 
-#ifdef HAVE_DHCP6
   if (!daemon->dhcp)
     fd = daemon->dhcp6fd;
 #endif
@@ -675,7 +677,12 @@ void queue_script(int action, struct dhcp_lease *lease, char *hostname, time_t n
 
   buf->action = action;
   buf->flags = lease->flags;
-  buf->hwaddr_len = lease->hwaddr_len;
+#ifdef HAVE_DHCP6 
+  if (is6)
+    buf->hwaddr_len = lease->vendorclass_count;
+  else
+#endif
+    buf->hwaddr_len = lease->hwaddr_len;
   buf->hwaddr_type = lease->hwaddr_type;
   buf->clid_len = clid_len;
   buf->ed_len = ed_len;

src/ipset.c

@@ -0,0 +1,229 @@
+/* ipset.c is Copyright (c) 2013 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+
+   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"
+
+#ifdef HAVE_IPSET
+
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/utsname.h>
+#include <arpa/inet.h>
+#include <linux/version.h>
+#include <linux/netlink.h>
+
+/* We want to be able to compile against old header files
+   Kernel version is handled at run-time. */
+
+#define NFNL_SUBSYS_IPSET 6
+
+#define IPSET_ATTR_DATA 7
+#define IPSET_ATTR_IP 1
+#define IPSET_ATTR_IPADDR_IPV4 1
+#define IPSET_ATTR_IPADDR_IPV6 2
+#define IPSET_ATTR_PROTOCOL 1
+#define IPSET_ATTR_SETNAME 2
+#define IPSET_CMD_ADD 9
+#define IPSET_CMD_DEL 10
+#define IPSET_MAXNAMELEN 32
+#define IPSET_PROTOCOL 6
+
+#ifndef NFNETLINK_V0
+#define NFNETLINK_V0    0
+#endif
+
+#ifndef NLA_F_NESTED
+#define NLA_F_NESTED		(1 << 15)
+#endif
+
+#ifndef NLA_F_NET_BYTEORDER
+#define NLA_F_NET_BYTEORDER	(1 << 14)
+#endif
+
+struct my_nlattr {
+        __u16           nla_len;
+        __u16           nla_type;
+};
+
+struct my_nfgenmsg {
+        __u8  nfgen_family;             /* AF_xxx */
+        __u8  version;          /* nfnetlink version */
+        __be16    res_id;               /* resource id */
+};
+
+
+/* data structure size in here is fixed */
+#define BUFF_SZ 256
+
+#define NL_ALIGN(len) (((len)+3) & ~(3))
+static const struct sockaddr_nl snl = { .nl_family = AF_NETLINK };
+static int ipset_sock, old_kernel;
+static char *buffer;
+
+static inline void add_attr(struct nlmsghdr *nlh, uint16_t type, size_t len, const void *data)
+{
+  struct my_nlattr *attr = (void *)nlh + NL_ALIGN(nlh->nlmsg_len);
+  uint16_t payload_len = NL_ALIGN(sizeof(struct my_nlattr)) + len;
+  attr->nla_type = type;
+  attr->nla_len = payload_len;
+  memcpy((void *)attr + NL_ALIGN(sizeof(struct my_nlattr)), data, len);
+  nlh->nlmsg_len += NL_ALIGN(payload_len);
+}
+
+void ipset_init(void)
+{
+  struct utsname utsname;
+  int version;
+  char *split;
+  
+  if (uname(&utsname) < 0)
+    die(_("failed to find kernel version: %s"), NULL, EC_MISC);
+  
+  split = strtok(utsname.release, ".");
+  version = (split ? atoi(split) : 0);
+  split = strtok(NULL, ".");
+  version = version * 256 + (split ? atoi(split) : 0);
+  split = strtok(NULL, ".");
+  version = version * 256 + (split ? atoi(split) : 0);
+  old_kernel = (version < KERNEL_VERSION(2,6,32));
+  
+  if (old_kernel && (ipset_sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) != -1)
+    return;
+  
+  if (!old_kernel && 
+      (buffer = safe_malloc(BUFF_SZ)) &&
+      (ipset_sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER)) != -1 &&
+      (bind(ipset_sock, (struct sockaddr *)&snl, sizeof(snl)) != -1))
+    return;
+  
+  die (_("failed to create IPset control socket: %s"), NULL, EC_MISC);
+}
+
+static int new_add_to_ipset(const char *setname, const struct all_addr *ipaddr, int af, int remove)
+{
+  struct nlmsghdr *nlh;
+  struct my_nfgenmsg *nfg;
+  struct my_nlattr *nested[2];
+  uint8_t proto;
+  int addrsz = INADDRSZ;
+  ssize_t rc;
+
+#ifdef HAVE_IPV6
+  if (af == AF_INET6)
+    addrsz = IN6ADDRSZ;
+#endif
+    
+  if (strlen(setname) >= IPSET_MAXNAMELEN) 
+    {
+      errno = ENAMETOOLONG;
+      return -1;
+    }
+  
+  memset(buffer, 0, BUFF_SZ);
+
+  nlh = (struct nlmsghdr *)buffer;
+  nlh->nlmsg_len = NL_ALIGN(sizeof(struct nlmsghdr));
+  nlh->nlmsg_type = (remove ? IPSET_CMD_DEL : IPSET_CMD_ADD) | (NFNL_SUBSYS_IPSET << 8);
+  nlh->nlmsg_flags = NLM_F_REQUEST;
+  
+  nfg = (struct my_nfgenmsg *)(buffer + nlh->nlmsg_len);
+  nlh->nlmsg_len += NL_ALIGN(sizeof(struct my_nfgenmsg));
+  nfg->nfgen_family = af;
+  nfg->version = NFNETLINK_V0;
+  nfg->res_id = htons(0);
+  
+  proto = IPSET_PROTOCOL;
+  add_attr(nlh, IPSET_ATTR_PROTOCOL, sizeof(proto), &proto);
+  add_attr(nlh, IPSET_ATTR_SETNAME, strlen(setname) + 1, setname);
+  nested[0] = (struct my_nlattr *)(buffer + NL_ALIGN(nlh->nlmsg_len));
+  nlh->nlmsg_len += NL_ALIGN(sizeof(struct my_nlattr));
+  nested[0]->nla_type = NLA_F_NESTED | IPSET_ATTR_DATA;
+  nested[1] = (struct my_nlattr *)(buffer + NL_ALIGN(nlh->nlmsg_len));
+  nlh->nlmsg_len += NL_ALIGN(sizeof(struct my_nlattr));
+  nested[1]->nla_type = NLA_F_NESTED | IPSET_ATTR_IP;
+  add_attr(nlh, 
+	   (af == AF_INET ? IPSET_ATTR_IPADDR_IPV4 : IPSET_ATTR_IPADDR_IPV6) | NLA_F_NET_BYTEORDER,
+	   addrsz, &ipaddr->addr);
+  nested[1]->nla_len = (void *)buffer + NL_ALIGN(nlh->nlmsg_len) - (void *)nested[1];
+  nested[0]->nla_len = (void *)buffer + NL_ALIGN(nlh->nlmsg_len) - (void *)nested[0];
+	
+  while ((rc = sendto(ipset_sock, buffer, nlh->nlmsg_len, 0,
+		      (struct sockaddr *)&snl, sizeof(snl))) == -1 && retry_send());
+  return rc;
+}
+
+
+static int old_add_to_ipset(const char *setname, const struct all_addr *ipaddr, int remove)
+{
+  socklen_t size;
+  struct ip_set_req_adt_get {
+    unsigned op;
+    unsigned version;
+    union {
+      char name[IPSET_MAXNAMELEN];
+      uint16_t index;
+    } set;
+    char typename[IPSET_MAXNAMELEN];
+  } req_adt_get;
+  struct ip_set_req_adt {
+    unsigned op;
+    uint16_t index;
+    uint32_t ip;
+  } req_adt;
+  
+  if (strlen(setname) >= sizeof(req_adt_get.set.name)) 
+    {
+      errno = ENAMETOOLONG;
+      return -1;
+    }
+  
+  req_adt_get.op = 0x10;
+  req_adt_get.version = 3;
+  strcpy(req_adt_get.set.name, setname);
+  size = sizeof(req_adt_get);
+  if (getsockopt(ipset_sock, SOL_IP, 83, &req_adt_get, &size) < 0)
+    return -1;
+  req_adt.op = remove ? 0x102 : 0x101;
+  req_adt.index = req_adt_get.set.index;
+  req_adt.ip = ntohl(ipaddr->addr.addr4.s_addr);
+  if (setsockopt(ipset_sock, SOL_IP, 83, &req_adt, sizeof(req_adt)) < 0)
+    return -1;
+  
+  return 0;
+}
+
+
+
+int add_to_ipset(const char *setname, const struct all_addr *ipaddr, int flags, int remove)
+{
+  int af = AF_INET;
+
+#ifdef HAVE_IPV6
+  if (flags & F_IPV6)
+    {
+      af = AF_INET6;
+      /* old method only supports IPv4 */
+      if (old_kernel)
+	return -1;
+    }
+#endif
+  
+  return old_kernel ? old_add_to_ipset(setname, ipaddr, remove) : new_add_to_ipset(setname, ipaddr, af, remove);
+}
+
+#endif

src/lease.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -115,7 +115,7 @@ void lease_init(time_t now)
 		s++;
 	      }
 	    
-	    hw_type = atoi(s);
+	    hw_type = strtoul(s, NULL, 10);
 	    
 	    if ((lease = lease6_allocate(&addr.addr.addr6, lease_type)))
 	      {
@@ -308,7 +308,7 @@ void lease_update_file(time_t now)
 
 #ifdef HAVE_DHCP6
   /* do timed RAs and determine when the next is, also pings to potential SLAAC addresses */
-  if (daemon->ra_contexts)
+  if (daemon->doing_ra)
     {
       time_t event;
       
@@ -345,11 +345,12 @@ void lease_update_file(time_t now)
 }
 
 
-static int find_interface_v4(struct in_addr local, int if_index, 
+static int find_interface_v4(struct in_addr local, int if_index, char *label,
 			     struct in_addr netmask, struct in_addr broadcast, void *vparam)
 {
   struct dhcp_lease *lease;
   
+  (void) label;
   (void) broadcast;
   (void) vparam;
 
@@ -363,12 +364,15 @@ static int find_interface_v4(struct in_addr local, int if_index,
 
 #ifdef HAVE_DHCP6
 static int find_interface_v6(struct in6_addr *local,  int prefix,
-			     int scope, int if_index, int dad, void *vparam)
+			     int scope, int if_index, int flags, 
+			     int preferred, int valid, void *vparam)
 {
   struct dhcp_lease *lease;
   
   (void)scope;
-  (void)dad;
+  (void)flags;
+  (void)preferred;
+  (void)valid;
 
   for (lease = leases; lease; lease = lease->next)
     if ((lease->flags & (LEASE_TA | LEASE_NA)))
@@ -386,6 +390,18 @@ void lease_ping_reply(struct in6_addr *sender, unsigned char *packet, char *inte
     slaac_ping_reply(sender, packet, interface, leases);
 }
 
+void lease_update_slaac(time_t now)
+{
+  /* Called when we contruct a new RA-names context, to add putative
+     new SLAAC addresses to existing leases. */
+
+  struct dhcp_lease *lease;
+  
+  if (daemon->dhcp)
+    for (lease = leases; lease; lease = lease->next)
+      slaac_add_addrs(lease, now, 0);
+}
+
 #endif
 
 
@@ -395,10 +411,6 @@ void lease_ping_reply(struct in6_addr *sender, unsigned char *packet, char *inte
    start-time. */
 void lease_find_interfaces(time_t now)
 {
-#ifdef HAVE_DHCP6
-  build_subnet_map();
-#endif
-
   iface_enumerate(AF_INET, &now, find_interface_v4);
 #ifdef HAVE_DHCP6
   iface_enumerate(AF_INET6, &now, find_interface_v6);
@@ -420,6 +432,11 @@ void lease_update_dns(int force)
 
   if (daemon->port != 0 && (dns_dirty || force))
     {
+#ifndef HAVE_BROKEN_RTC
+      /* force transfer to authoritative secondaries */
+      daemon->soa_sn++;
+#endif
+      
       cache_unhash_dhcp();
 
       for (lease = leases; lease; lease = lease->next)
@@ -539,8 +556,7 @@ struct dhcp_lease *lease_find_by_addr(struct in_addr addr)
 }
 
 #ifdef HAVE_DHCP6
-/* addr or clid may be NULL for "don't care, both NULL resets "USED" flags both
-   set activates USED check */
+/* find address for {CLID, IAID, address} */
 struct dhcp_lease *lease6_find(unsigned char *clid, int clid_len, 
 			       int lease_type, int iaid, struct in6_addr *addr)
 {
@@ -551,40 +567,54 @@ struct dhcp_lease *lease6_find(unsigned char *clid, int clid_len,
       if (!(lease->flags & lease_type) || lease->hwaddr_type != iaid)
 	continue;
 
-      if (clid && addr && (lease->flags & LEASE_USED))
+      if (memcmp(lease->hwaddr, addr, IN6ADDRSZ) != 0)
 	continue;
       
-      if (addr && memcmp(lease->hwaddr, addr, IN6ADDRSZ) != 0)
-	continue;
-      
-      if (clid &&
-	  (clid_len != lease->clid_len ||
+      if ((clid_len != lease->clid_len ||
 	   memcmp(clid, lease->clid, clid_len) != 0))
 	continue;
       
-      lease->flags |= LEASE_USED;
       return lease;
     }
   
   return NULL;
 }
 
-void lease6_filter(int lease_type, int iaid, struct dhcp_context *context)
+/* reset "USED flags */
+void lease6_reset(void)
 {
   struct dhcp_lease *lease;
   
   for (lease = leases; lease; lease = lease->next)
+    lease->flags &= ~LEASE_USED;
+}
+
+/* enumerate all leases belonging to {CLID, IAID} */
+struct dhcp_lease *lease6_find_by_client(struct dhcp_lease *first, int lease_type, unsigned char *clid, int clid_len, int iaid)
+{
+  struct dhcp_lease *lease;
+
+  if (!first)
+    first = leases;
+  else
+    first = first->next;
+
+  for (lease = first; lease; lease = lease->next)
     {
-      /* reset "USED flag */
-      lease->flags &= ~LEASE_USED;
-      
+      if (lease->flags & LEASE_USED)
+	continue;
+
       if (!(lease->flags & lease_type) || lease->hwaddr_type != iaid)
 	continue;
-      
-      /* leases on the wrong interface get filtered out here */
-      if (!is_addr_in_context6(context, (struct in6_addr *)&lease->hwaddr))
-	lease->flags |= LEASE_USED;
+ 
+      if ((clid_len != lease->clid_len ||
+	   memcmp(clid, lease->clid, clid_len) != 0))
+	continue;
+
+      return lease;
     }
+  
+  return NULL;
 }
 
 struct dhcp_lease *lease6_find_by_addr(struct in6_addr *net, int prefix, u64 addr)
@@ -674,8 +704,11 @@ static struct dhcp_lease *lease_allocate(void)
 struct dhcp_lease *lease4_allocate(struct in_addr addr)
 {
   struct dhcp_lease *lease = lease_allocate();
-  lease->addr = addr;
-  lease->hwaddr_len = 256; /* illegal value */
+  if (lease)
+    {
+      lease->addr = addr;
+      lease->hwaddr_len = 256; /* illegal value */
+    }
 
   return lease;
 }
@@ -684,8 +717,12 @@ struct dhcp_lease *lease4_allocate(struct in_addr addr)
 struct dhcp_lease *lease6_allocate(struct in6_addr *addrp, int lease_type)
 {
   struct dhcp_lease *lease = lease_allocate();
-  memcpy(lease->hwaddr, addrp, sizeof(*addrp)) ;
-  lease->flags |= lease_type;
+
+  if (lease)
+    {
+      memcpy(lease->hwaddr, addrp, sizeof(*addrp)) ;
+      lease->flags |= lease_type;
+    }
 
   return lease;
 }

src/log.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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

src/netlink.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -39,6 +39,7 @@ static struct iovec iov;
 static u32 netlink_pid;
 
 static int nl_async(struct nlmsghdr *h);
+static void nl_newaddress(time_t now);
 
 void netlink_init(void)
 {
@@ -50,10 +51,14 @@ void netlink_init(void)
   addr.nl_pid = 0; /* autobind */
   addr.nl_groups = RTMGRP_IPV4_ROUTE;
   if (option_bool(OPT_CLEVERBIND))
-    addr.nl_groups |= RTMGRP_IPV4_IFADDR;
+    addr.nl_groups |= RTMGRP_IPV4_IFADDR;  
 #ifdef HAVE_IPV6
   addr.nl_groups |= RTMGRP_IPV6_ROUTE;
-  if (daemon->ra_contexts || option_bool(OPT_CLEVERBIND))
+  if (option_bool(OPT_CLEVERBIND))
+    addr.nl_groups |= RTMGRP_IPV6_IFADDR;
+#endif
+#ifdef HAVE_DHCP6
+  if (daemon->doing_ra || daemon->doing_dhcp6)
     addr.nl_groups |= RTMGRP_IPV6_IFADDR;
 #endif
   
@@ -187,19 +192,19 @@ int iface_enumerate(int family, void *parm, int (*callback)())
 	if (h->nlmsg_seq != seq || h->nlmsg_pid != netlink_pid || h->nlmsg_type == NLMSG_ERROR)
 	  {
 	    /* May be multicast arriving async */
-	    if (nl_async(h) && option_bool(OPT_CLEVERBIND))
-	      newaddr = 1; 
+	    if (nl_async(h))
+	      {
+		newaddr = 1; 
+		enumerate_interfaces(1); /* reset */
+	      }
 	  }
 	else if (h->nlmsg_type == NLMSG_DONE)
 	  {
 	    /* handle async new interface address arrivals, these have to be done
 	       after we complete as we're not re-entrant */
 	    if (newaddr) 
-	      {
-		enumerate_interfaces();
-		create_bound_listeners(0);
-	      }
-	    
+	      nl_newaddress(dnsmasq_time());
+		
 	    return callback_ok;
 	  }
 	else if (h->nlmsg_type == RTM_NEWADDR && family != AF_UNSPEC && family != AF_LOCAL)
@@ -213,7 +218,8 @@ int iface_enumerate(int family, void *parm, int (*callback)())
 		if (ifa->ifa_family == AF_INET)
 		  {
 		    struct in_addr netmask, addr, broadcast;
-		    
+		    char *label = NULL;
+
 		    netmask.s_addr = htonl(0xffffffff << (32 - ifa->ifa_prefixlen));
 		    addr.s_addr = 0;
 		    broadcast.s_addr = 0;
@@ -224,29 +230,46 @@ int iface_enumerate(int family, void *parm, int (*callback)())
 			  addr = *((struct in_addr *)(rta+1));
 			else if (rta->rta_type == IFA_BROADCAST)
 			  broadcast = *((struct in_addr *)(rta+1));
+			else if (rta->rta_type == IFA_LABEL)
+			  label = RTA_DATA(rta);
 			
 			rta = RTA_NEXT(rta, len1);
 		      }
 		    
 		    if (addr.s_addr && callback_ok)
-		      if (!((*callback)(addr, ifa->ifa_index, netmask, broadcast, parm)))
+		      if (!((*callback)(addr, ifa->ifa_index, label,  netmask, broadcast, parm)))
 			callback_ok = 0;
 		  }
 #ifdef HAVE_IPV6
 		else if (ifa->ifa_family == AF_INET6)
 		  {
 		    struct in6_addr *addrp = NULL;
+		    u32 valid = 0, preferred = 0;
+		    int flags = 0;
+		    
 		    while (RTA_OK(rta, len1))
 		      {
 			if (rta->rta_type == IFA_ADDRESS)
 			  addrp = ((struct in6_addr *)(rta+1)); 
-			
+			else if (rta->rta_type == IFA_CACHEINFO)
+			  {
+			    struct ifa_cacheinfo *ifc = (struct ifa_cacheinfo *)(rta+1);
+			    preferred = ifc->ifa_prefered;
+			    valid = ifc->ifa_valid;
+			  }
 			rta = RTA_NEXT(rta, len1);
 		      }
 		    
+		    if (ifa->ifa_flags & IFA_F_TENTATIVE)
+		      flags |= IFACE_TENTATIVE;
+		    
+		    if (ifa->ifa_flags & IFA_F_DEPRECATED)
+		      flags |= IFACE_DEPRECATED;
+		    
 		    if (addrp && callback_ok)
 		      if (!((*callback)(addrp, (int)(ifa->ifa_prefixlen), (int)(ifa->ifa_scope), 
-					(int)(ifa->ifa_index), (int)(ifa->ifa_flags & IFA_F_TENTATIVE), parm)))
+					(int)(ifa->ifa_index), flags, 
+					(int) preferred, (int)valid, parm)))
 			callback_ok = 0;
 		  }
 #endif
@@ -305,7 +328,7 @@ int iface_enumerate(int family, void *parm, int (*callback)())
     }
 }
 
-void netlink_multicast(void)
+void netlink_multicast(time_t now)
 {
   ssize_t len;
   struct nlmsghdr *h;
@@ -318,17 +341,14 @@ void netlink_multicast(void)
   
   if ((len = netlink_recv()) != -1)
     for (h = (struct nlmsghdr *)iov.iov_base; NLMSG_OK(h, (size_t)len); h = NLMSG_NEXT(h, len))
-      if (nl_async(h) && option_bool(OPT_CLEVERBIND))
+      if (nl_async(h))
 	newaddr = 1;
   
   /* restore non-blocking status */
   fcntl(daemon->netlinkfd, F_SETFL, flags);
-
+  
   if (newaddr) 
-    {
-      enumerate_interfaces();
-      create_bound_listeners(0);
-    }
+    nl_newaddress(now);
 }
 
 static int nl_async(struct nlmsghdr *h)
@@ -371,25 +391,33 @@ static int nl_async(struct nlmsghdr *h)
 	}
       return 0;
     }
-  else if (h->nlmsg_type == RTM_NEWADDR) 
-    {
-#ifdef HAVE_DHCP6
-      /* force RAs to sync new network and pick up new interfaces.  */
-      if (daemon->ra_contexts)
-	{
-	  schedule_subnet_map();
-	  ra_start_unsolicted(dnsmasq_time(), NULL);
-	  /* cause lease_update_file to run after we return, in case we were called from
-	     iface_enumerate and can't re-enter it now */
-	  send_alarm(0, 0);
-	}
-#endif	 
-      return 1; /* clever bind mode - rescan */
-    }	 
+  else if (h->nlmsg_type == RTM_NEWADDR || h->nlmsg_type == RTM_DELADDR) 
+    return 1; /* clever bind mode - rescan */
   
   return 0;
 }
+  	
+static void nl_newaddress(time_t now)
+{
+  if (option_bool(OPT_CLEVERBIND) || daemon->doing_dhcp6 || daemon->doing_ra)
+    enumerate_interfaces(0);
   
+  if (option_bool(OPT_CLEVERBIND))
+    create_bound_listeners(0);
+  
+#ifdef HAVE_DHCP6
+  if (daemon->doing_dhcp6 || daemon->doing_ra)
+    {
+      join_multicast(0);
+      dhcp_construct_contexts(now);
+    }
+  
+  if (daemon->doing_dhcp6)
+    lease_find_interfaces(now);
+#endif
+}
+
+
 #endif
 
       

src/network.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -99,6 +99,8 @@ int indextoname(int fd, int index, char *name)
 
 int indextoname(int fd, int index, char *name)
 { 
+  (void)fd;
+
   if (index == 0 || !if_indextoname(index, name))
     return 0;
 
@@ -107,7 +109,7 @@ int indextoname(int fd, int index, char *name)
 
 #endif
 
-int iface_check(int family, struct all_addr *addr, char *name)
+int iface_check(int family, struct all_addr *addr, char *name, int *auth)
 {
   struct iname *tmp;
   int ret = 1;
@@ -115,81 +117,199 @@ int iface_check(int family, struct all_addr *addr, char *name)
   /* Note: have to check all and not bail out early, so that we set the
      "used" flags. */
   
+  if (auth)
+    *auth = 0;
+  
   if (daemon->if_names || daemon->if_addrs)
     {
       ret = 0;
 
       for (tmp = daemon->if_names; tmp; tmp = tmp->next)
-	if (tmp->name && (strcmp(tmp->name, name) == 0))
+	if (tmp->name && wildcard_match(tmp->name, name))
 	  ret = tmp->used = 1;
 	        
-      for (tmp = daemon->if_addrs; tmp; tmp = tmp->next)
-	if (tmp->addr.sa.sa_family == family)
-	  {
-	    if (family == AF_INET &&
-		tmp->addr.in.sin_addr.s_addr == addr->addr.addr4.s_addr)
-	      ret = tmp->used = 1;
+      if (addr)
+	for (tmp = daemon->if_addrs; tmp; tmp = tmp->next)
+	  if (tmp->addr.sa.sa_family == family)
+	    {
+	      if (family == AF_INET &&
+		  tmp->addr.in.sin_addr.s_addr == addr->addr.addr4.s_addr)
+		ret = tmp->used = 1;
 #ifdef HAVE_IPV6
-	    else if (family == AF_INET6 &&
-		     IN6_ARE_ADDR_EQUAL(&tmp->addr.in6.sin6_addr, 
-					&addr->addr.addr6))
-	      ret = tmp->used = 1;
+	      else if (family == AF_INET6 &&
+		       IN6_ARE_ADDR_EQUAL(&tmp->addr.in6.sin6_addr, 
+					  &addr->addr.addr6))
+		ret = tmp->used = 1;
 #endif
-	  }          
+	    }          
     }
   
   for (tmp = daemon->if_except; tmp; tmp = tmp->next)
-    if (tmp->name && (strcmp(tmp->name, name) == 0))
+    if (tmp->name && wildcard_match(tmp->name, name))
       ret = 0;
     
+
+  for (tmp = daemon->authinterface; tmp; tmp = tmp->next)
+    if (tmp->name)
+      {
+	if (strcmp(tmp->name, name) == 0)
+	  break;
+      }
+    else if (addr && tmp->addr.sa.sa_family == AF_INET && family == AF_INET &&
+	     tmp->addr.in.sin_addr.s_addr == addr->addr.addr4.s_addr)
+      break;
+#ifdef HAVE_IPV6
+    else if (addr && tmp->addr.sa.sa_family == AF_INET6 && family == AF_INET6 &&
+	     IN6_ARE_ADDR_EQUAL(&tmp->addr.in6.sin6_addr, &addr->addr.addr6))
+      break;
+#endif      
+
+  if (tmp && auth) 
+    {
+      *auth = 1;
+      ret = 1;
+    }
+
   return ret; 
 }
-      
-static int iface_allowed(struct irec **irecp, int if_index, 
+
+
+/* Fix for problem that the kernel sometimes reports the loopback inerface as the
+   arrival interface when a packet originates locally, even when sent to address of 
+   an interface other than the loopback. Accept packet if it arrived via a loopback 
+   interface, even when we're not accepting packets that way, as long as the destination
+   address is one we're believing. Interface list must be up-to-date before calling. */
+int loopback_exception(int fd, int family, struct all_addr *addr, char *name)    
+{
+  struct ifreq ifr;
+  struct irec *iface;
+
+  strncpy(ifr.ifr_name, name, IF_NAMESIZE);
+  if (ioctl(fd, SIOCGIFFLAGS, &ifr) != -1 &&
+      ifr.ifr_flags & IFF_LOOPBACK)
+    {
+      for (iface = daemon->interfaces; iface; iface = iface->next)
+	if (iface->addr.sa.sa_family == family)
+	  {
+	    if (family == AF_INET)
+	      {
+		if (iface->addr.in.sin_addr.s_addr == addr->addr.addr4.s_addr)
+		  return 1;
+	      }
+#ifdef HAVE_IPV6
+	    else if (IN6_ARE_ADDR_EQUAL(&iface->addr.in6.sin6_addr, &addr->addr.addr6))
+	      return 1;
+#endif
+	    
+	  }
+    }
+  return 0;
+}
+
+/* If we're configured with something like --interface=eth0:0 then we'll listen correctly
+   on the relevant address, but the name of the arrival interface, derived from the
+   index won't match the config. Check that we found an interface address for the arrival 
+   interface: daemon->interfaces must be up-to-date. */
+int label_exception(int index, int family, struct all_addr *addr)
+{
+  struct irec *iface;
+
+  /* labels only supported on IPv4 addresses. */
+  if (family != AF_INET)
+    return 0;
+
+  for (iface = daemon->interfaces; iface; iface = iface->next)
+    if (iface->index == index && iface->addr.sa.sa_family == AF_INET &&
+	iface->addr.in.sin_addr.s_addr == addr->addr.addr4.s_addr)
+      return 1;
+
+  return 0;
+}
+
+struct iface_param {
+  struct addrlist *spare;
+  int fd;
+};
+
+static int iface_allowed(struct iface_param *param, int if_index, char *label,
 			 union mysockaddr *addr, struct in_addr netmask, int dad) 
 {
   struct irec *iface;
-  int fd, mtu = 0, loopback;
+  int mtu = 0, loopback;
   struct ifreq ifr;
   int tftp_ok = !!option_bool(OPT_TFTP);
   int dhcp_ok = 1;
+  int auth_dns = 0;
 #ifdef HAVE_DHCP
   struct iname *tmp;
 #endif
 
+  if (!indextoname(param->fd, if_index, ifr.ifr_name) ||
+      ioctl(param->fd, SIOCGIFFLAGS, &ifr) == -1)
+    return 0;
+   
+  loopback = ifr.ifr_flags & IFF_LOOPBACK;
+  
+  if (loopback)
+    dhcp_ok = 0;
+  
+  if (ioctl(param->fd, SIOCGIFMTU, &ifr) != -1)
+    mtu = ifr.ifr_mtu;
+  
+  if (!label)
+    label = ifr.ifr_name;
+
+  
+  /* Update addresses from interface_names. These are a set independent
+     of the set we're listening on. */  
+#ifdef HAVE_IPV6
+  if (addr->sa.sa_family != AF_INET6 || !IN6_IS_ADDR_LINKLOCAL(&addr->in6.sin6_addr))
+#endif
+    {
+      struct interface_name *int_name;
+      struct addrlist *al;
+
+      for (int_name = daemon->int_names; int_name; int_name = int_name->next)
+	if (strncmp(label, int_name->intr, IF_NAMESIZE) == 0)
+	  {
+	    if (param->spare)
+	      {
+		al = param->spare;
+		param->spare = al->next;
+	      }
+	    else
+	      al = whine_malloc(sizeof(struct addrlist));
+	    
+	    if (al)
+	      {
+		if (addr->sa.sa_family == AF_INET)
+		  {
+		    al->addr.addr.addr4 = addr->in.sin_addr;
+		    al->next = int_name->addr4;
+		    int_name->addr4 = al;
+		  }
+#ifdef HAVE_IPV6
+		else
+		 {
+		    al->addr.addr.addr6 = addr->in6.sin6_addr;
+		    al->next = int_name->addr6;
+		    int_name->addr6 = al;
+		 } 
+#endif
+	      }
+	  }
+    }
+ 
   /* check whether the interface IP has been added already 
      we call this routine multiple times. */
-  for (iface = *irecp; iface; iface = iface->next) 
+  for (iface = daemon->interfaces; iface; iface = iface->next) 
     if (sockaddr_isequal(&iface->addr, addr))
       {
 	iface->dad = dad;
 	return 1;
       }
 
-  if ((fd = socket(PF_INET, SOCK_DGRAM, 0)) == -1 ||
-      !indextoname(fd, if_index, ifr.ifr_name) ||
-      ioctl(fd, SIOCGIFFLAGS, &ifr) == -1)
-    {
-      if (fd != -1)
-	{
-	  int errsave = errno;
-	  close(fd);
-	  errno = errsave;
-	}
-      return 0;
-    }
-   
-  loopback = ifr.ifr_flags & IFF_LOOPBACK;
-  
-  if (loopback)
-     dhcp_ok = 0;
-
-  if (ioctl(fd, SIOCGIFMTU, &ifr) != -1)
-    mtu = ifr.ifr_mtu;
-  
-  close(fd);
-  
-  /* If we are restricting the set of interfaces to use, make
+ /* If we are restricting the set of interfaces to use, make
      sure that loopback interfaces are in that set. */
   if (daemon->if_names && loopback)
     {
@@ -198,37 +318,46 @@ static int iface_allowed(struct irec **irecp, int if_index,
 	if (lo->name && strcmp(lo->name, ifr.ifr_name) == 0)
 	  break;
       
-      if (!lo && 
-	  (lo = whine_malloc(sizeof(struct iname))) &&
-	  (lo->name = whine_malloc(strlen(ifr.ifr_name)+1)))
+      if (!lo && (lo = whine_malloc(sizeof(struct iname)))) 
 	{
-	  strcpy(lo->name, ifr.ifr_name);
-	  lo->used = 1;
-	  lo->next = daemon->if_names;
-	  daemon->if_names = lo;
+	  if ((lo->name = whine_malloc(strlen(ifr.ifr_name)+1)))
+	    {
+	      strcpy(lo->name, ifr.ifr_name);
+	      lo->used = 1;
+	      lo->next = daemon->if_names;
+	      daemon->if_names = lo;
+	    }
+	  else
+	    free(lo);
 	}
     }
   
   if (addr->sa.sa_family == AF_INET &&
-      !iface_check(AF_INET, (struct all_addr *)&addr->in.sin_addr, ifr.ifr_name))
+      !iface_check(AF_INET, (struct all_addr *)&addr->in.sin_addr, label, &auth_dns))
     return 1;
-  
-#ifdef HAVE_DHCP
-  for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
-    if (tmp->name && (strcmp(tmp->name, ifr.ifr_name) == 0))
-      {
-	tftp_ok = 0;
-	dhcp_ok = 0;
-      }
-#endif
-  
+
 #ifdef HAVE_IPV6
   if (addr->sa.sa_family == AF_INET6 &&
-      !iface_check(AF_INET6, (struct all_addr *)&addr->in6.sin6_addr, ifr.ifr_name))
+      !iface_check(AF_INET6, (struct all_addr *)&addr->in6.sin6_addr, label, &auth_dns))
     return 1;
 #endif
-  
-
+    
+#ifdef HAVE_DHCP
+  /* No DHCP where we're doing auth DNS. */
+  if (auth_dns)
+    {
+      tftp_ok = 0;
+      dhcp_ok = 0;
+    }
+  else
+    for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
+      if (tmp->name && wildcard_match(tmp->name, ifr.ifr_name))
+	{
+	  tftp_ok = 0;
+	  dhcp_ok = 0;
+	}
+#endif
+ 
   /* add to list */
   if ((iface = whine_malloc(sizeof(struct irec))))
     {
@@ -236,17 +365,20 @@ static int iface_allowed(struct irec **irecp, int if_index,
       iface->netmask = netmask;
       iface->tftp_ok = tftp_ok;
       iface->dhcp_ok = dhcp_ok;
+      iface->dns_auth = auth_dns;
       iface->mtu = mtu;
       iface->dad = dad;
-      iface->done = 0;
+      iface->done = iface->multicast_done = 0;
+      iface->index = if_index;
       if ((iface->name = whine_malloc(strlen(ifr.ifr_name)+1)))
 	{
 	  strcpy(iface->name, ifr.ifr_name);
-	  iface->next = *irecp;
-	  *irecp = iface;
+	  iface->next = daemon->interfaces;
+	  daemon->interfaces = iface;
 	  return 1;
 	}
       free(iface);
+
     }
   
   errno = ENOMEM; 
@@ -255,7 +387,8 @@ static int iface_allowed(struct irec **irecp, int if_index,
 
 #ifdef HAVE_IPV6
 static int iface_allowed_v6(struct in6_addr *local, int prefix, 
-			    int scope, int if_index, int dad, void *vparam)
+			    int scope, int if_index, int flags, 
+			    int preferred, int valid, void *vparam)
 {
   union mysockaddr addr;
   struct in_addr netmask; /* dummy */
@@ -263,6 +396,8 @@ static int iface_allowed_v6(struct in6_addr *local, int prefix,
 
   (void)prefix; /* warning */
   (void)scope; /* warning */
+  (void)preferred;
+  (void)valid;
   
   memset(&addr, 0, sizeof(addr));
 #ifdef HAVE_SOCKADDR_SA_LEN
@@ -273,11 +408,11 @@ static int iface_allowed_v6(struct in6_addr *local, int prefix,
   addr.in6.sin6_port = htons(daemon->port);
   addr.in6.sin6_scope_id = if_index;
   
-  return iface_allowed((struct irec **)vparam, if_index, &addr, netmask, dad);
+  return iface_allowed((struct iface_param *)vparam, if_index, NULL, &addr, netmask, !!(flags & IFACE_TENTATIVE));
 }
 #endif
 
-static int iface_allowed_v4(struct in_addr local, int if_index, 
+static int iface_allowed_v4(struct in_addr local, int if_index, char *label,
 			    struct in_addr netmask, struct in_addr broadcast, void *vparam)
 {
   union mysockaddr addr;
@@ -291,17 +426,75 @@ static int iface_allowed_v4(struct in_addr local, int if_index,
   addr.in.sin_addr = local;
   addr.in.sin_port = htons(daemon->port);
 
-  return iface_allowed((struct irec **)vparam, if_index, &addr, netmask, 0);
+  return iface_allowed((struct iface_param *)vparam, if_index, label, &addr, netmask, 0);
 }
    
-int enumerate_interfaces(void)
+int enumerate_interfaces(int reset)
 {
+  static struct addrlist *spare = NULL;
+  static int done = 0;
+  struct iface_param param;
+  int errsave, ret = 1;
+  struct addrlist *addr, *tmp;
+  struct interface_name *intname;
+  
+  /* Do this max once per select cycle  - also inhibits netlink socket use
+   in TCP child processes. */
+  
+  if (reset)
+    {
+      done = 0;
+      return 1;
+    }
+
+  if (done)
+    return 1;
+
+  done = 1;
+
+  if ((param.fd = socket(PF_INET, SOCK_DGRAM, 0)) == -1)
+    return 0;
+ 
+  /* remove addresses stored against interface_names */
+  for (intname = daemon->int_names; intname; intname = intname->next)
+    {
+      for (addr = intname->addr4; addr; addr = tmp)
+	{
+	  tmp = addr->next;
+	  addr->next = spare;
+	  spare = addr;
+	}
+      
+      intname->addr4 = NULL;
+
 #ifdef HAVE_IPV6
-  if (!iface_enumerate(AF_INET6, &daemon->interfaces, iface_allowed_v6))
-    return 0; 
+      for (addr = intname->addr6; addr; addr = tmp)
+	{
+	  tmp = addr->next;
+	  addr->next = spare;
+	  spare = addr;
+	} 
+      
+      intname->addr6 = NULL;
+#endif
+    }
+  
+  param.spare = spare;
+  
+#ifdef HAVE_IPV6
+  ret = iface_enumerate(AF_INET6, &param, iface_allowed_v6);
 #endif
 
-  return iface_enumerate(AF_INET, &daemon->interfaces, iface_allowed_v4); 
+  if (ret)
+    ret = iface_enumerate(AF_INET, &param, iface_allowed_v4); 
+ 
+  errsave = errno;
+  close(param.fd);
+  errno = errsave;
+
+  spare = param.spare;
+    
+  return ret;
 }
 
 /* set NONBLOCK bit on fd: See Stevens 16.6 */
@@ -420,6 +613,77 @@ int set_ipv6pktinfo(int fd)
   return 0;
 }
 #endif
+
+
+/* Find the interface on which a TCP connection arrived, if possible, or zero otherwise. */
+int tcp_interface(int fd, int af)
+{ 
+  int if_index = 0;
+
+#ifdef HAVE_LINUX_NETWORK
+  int opt = 1;
+  struct cmsghdr *cmptr;
+  struct msghdr msg;
+  
+  /* use mshdr do that the CMSDG_* macros are available */
+  msg.msg_control = daemon->packet;
+  msg.msg_controllen = daemon->packet_buff_sz;
+  
+  /* we overwrote the buffer... */
+  daemon->srv_save = NULL;
+  
+  if (af == AF_INET)
+    {
+      if (setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &opt, sizeof(opt)) != -1 &&
+	  getsockopt(fd, IPPROTO_IP, IP_PKTOPTIONS, msg.msg_control, (socklen_t *)&msg.msg_controllen) != -1)
+	for (cmptr = CMSG_FIRSTHDR(&msg); cmptr; cmptr = CMSG_NXTHDR(&msg, cmptr))
+	  if (cmptr->cmsg_level == IPPROTO_IP && cmptr->cmsg_type == IP_PKTINFO)
+            {
+              union {
+                unsigned char *c;
+                struct in_pktinfo *p;
+              } p;
+	      
+	      p.c = CMSG_DATA(cmptr);
+	      if_index = p.p->ipi_ifindex;
+	    }
+    }
+#ifdef HAVE_IPV6
+  else
+    {
+      /* Only the RFC-2292 API has the ability to find the interface for TCP connections,
+	 it was removed in RFC-3542 !!!! 
+
+	 Fortunately, Linux kept the 2292 ABI when it moved to 3542. The following code always
+	 uses the old ABI, and should work with pre- and post-3542 kernel headers */
+
+#ifdef IPV6_2292PKTOPTIONS   
+#  define PKTOPTIONS IPV6_2292PKTOPTIONS
+#else
+#  define PKTOPTIONS IPV6_PKTOPTIONS
+#endif
+
+      if (set_ipv6pktinfo(fd) &&
+	  getsockopt(fd, IPPROTO_IPV6, PKTOPTIONS, msg.msg_control, (socklen_t *)&msg.msg_controllen) != -1)
+	{
+          for (cmptr = CMSG_FIRSTHDR(&msg); cmptr; cmptr = CMSG_NXTHDR(&msg, cmptr))
+            if (cmptr->cmsg_level == IPPROTO_IPV6 && cmptr->cmsg_type == daemon->v6pktinfo)
+              {
+                union {
+                  unsigned char *c;
+                  struct in6_pktinfo *p;
+                } p;
+                p.c = CMSG_DATA(cmptr);
+		
+		if_index = p.p->ipi6_ifindex;
+              }
+	}
+    }
+#endif /* IPV6 */
+#endif /* Linux */
+ 
+  return if_index;
+}
       
 static struct listener *create_listeners(union mysockaddr *addr, int do_tftp, int dienow)
 {
@@ -550,6 +814,61 @@ int is_dad_listeners(void)
   
   return 0;
 }
+
+#ifdef HAVE_DHCP6
+void join_multicast(int dienow)      
+{
+  struct irec *iface, *tmp;
+
+  for (iface = daemon->interfaces; iface; iface = iface->next)
+    if (iface->addr.sa.sa_family == AF_INET6 && iface->dhcp_ok && !iface->multicast_done)
+      {
+	/* There's an irec per address but we only want to join for multicast 
+	   once per interface. Weed out duplicates. */
+	for (tmp = daemon->interfaces; tmp; tmp = tmp->next)
+	  if (tmp->multicast_done && tmp->index == iface->index)
+	    break;
+	
+	iface->multicast_done = 1;
+	
+	if (!tmp)
+	  {
+	    struct ipv6_mreq mreq;
+	    int err = 0;
+
+	    mreq.ipv6mr_interface = iface->index;
+	    
+	    inet_pton(AF_INET6, ALL_RELAY_AGENTS_AND_SERVERS, &mreq.ipv6mr_multiaddr);
+	    
+	    if (daemon->doing_dhcp6 &&
+		setsockopt(daemon->dhcp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
+	      err = 1;
+	    
+	    inet_pton(AF_INET6, ALL_SERVERS, &mreq.ipv6mr_multiaddr);
+	    
+	    if (daemon->doing_dhcp6 && 
+		setsockopt(daemon->dhcp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
+	      err = 1;
+	    
+	    inet_pton(AF_INET6, ALL_ROUTERS, &mreq.ipv6mr_multiaddr);
+	    
+	    if (daemon->doing_ra &&
+		setsockopt(daemon->icmp6fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &mreq, sizeof(mreq)) == -1)
+	      err = 1;
+	    
+	    if (err)
+	      {
+		char *s = _("interface %s failed to join DHCPv6 multicast group: %s");
+		if (dienow)
+		  die(s, iface->name, EC_BADNET);
+		else
+		  my_syslog(LOG_ERR, s, iface->name, strerror(errno));
+	      }
+	  }
+      }
+}
+#endif
+
 /* return a UDP socket bound to a random port, have to cope with straying into
    occupied port nos and reserved ones. */
 int random_sock(int family)
@@ -747,7 +1066,7 @@ void check_servers(void)
 
   /* interface may be new since startup */
   if (!option_bool(OPT_NOWILD))
-    enumerate_interfaces();
+    enumerate_interfaces(0);
   
   for (new = daemon->servers; new; new = tmp)
     {
@@ -955,27 +1274,7 @@ int reload_servers(char *fname)
 }
 
 
-/* Use an IPv4 listener socket for ioctling */
-struct in_addr get_ifaddr(char *intr)
-{
-  struct listener *l;
-  struct ifreq ifr;
-  struct sockaddr_in ret;
-  
-  ret.sin_addr.s_addr = -1;
-
-  for (l = daemon->listeners; 
-       l && (l->family != AF_INET || l->fd == -1);
-       l = l->next);
-  
-  strncpy(ifr.ifr_name, intr, IF_NAMESIZE);
-  ifr.ifr_addr.sa_family = AF_INET;
-  
-  if (l &&  ioctl(l->fd, SIOCGIFADDR, &ifr) != -1)
-    memcpy(&ret, &ifr.ifr_addr, sizeof(ret)); 
-  
-  return ret.sin_addr;
-}
+
 
 
 

src/option.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -121,6 +121,17 @@ struct myoption {
 #define LOPT_RR        310
 #define LOPT_CLVERBIND 311
 #define LOPT_MAXCTTL   312
+#define LOPT_AUTHZONE  313
+#define LOPT_AUTHSERV  314
+#define LOPT_AUTHTTL   315
+#define LOPT_AUTHSOA   316
+#define LOPT_AUTHSFS   317
+#define LOPT_AUTHPEER  318
+#define LOPT_IPSET     319
+#define LOPT_SYNTH     320
+#ifdef OPTION6_PREFIX_CLASS 
+#define LOPT_PREF_CLSS 321
+#endif
 
 #ifdef HAVE_GETOPT_LONG
 static const struct option opts[] =  
@@ -247,6 +258,17 @@ static const struct myoption opts[] =
     { "dhcp-duid", 1, 0, LOPT_DUID },
     { "host-record", 1, 0, LOPT_HOST_REC },
     { "bind-dynamic", 0, 0, LOPT_CLVERBIND },
+    { "auth-zone", 1, 0, LOPT_AUTHZONE },
+    { "auth-server", 1, 0, LOPT_AUTHSERV },
+    { "auth-ttl", 1, 0, LOPT_AUTHTTL },
+    { "auth-soa", 1, 0, LOPT_AUTHSOA },
+    { "auth-sec-servers", 1, 0, LOPT_AUTHSFS },
+    { "auth-peer", 1, 0, LOPT_AUTHPEER }, 
+    { "ipset", 1, 0, LOPT_IPSET },
+    { "synth-domain", 1, 0, LOPT_SYNTH },
+#ifdef OPTION6_PREFIX_CLASS 
+    { "dhcp-prefix-class", 1, 0, LOPT_PREF_CLSS },
+#endif
     { NULL, 0, 0, 0 }
   };
 
@@ -378,7 +400,18 @@ static struct {
   { LOPT_DUID, ARG_ONE, "<enterprise>,<duid>", gettext_noop("Specify DUID_EN-type DHCPv6 server DUID"), NULL },
   { LOPT_HOST_REC, ARG_DUP, "<name>,<address>", gettext_noop("Specify host (A/AAAA and PTR) records"), NULL },
   { LOPT_RR, ARG_DUP, "<name>,<RR-number>,[<data>]", gettext_noop("Specify arbitrary DNS resource record"), NULL },
-  { LOPT_CLVERBIND, OPT_CLEVERBIND, NULL, gettext_noop("Bind to interfaces in use - check for new interfaces"), NULL},
+  { LOPT_CLVERBIND, OPT_CLEVERBIND, NULL, gettext_noop("Bind to interfaces in use - check for new interfaces"), NULL },
+  { LOPT_AUTHSERV, ARG_ONE, "<NS>,<interface>", gettext_noop("Export local names to global DNS"), NULL },
+  { LOPT_AUTHZONE, ARG_DUP, "<domain>,[<subnet>...]", gettext_noop("Domain to export to global DNS"), NULL },
+  { LOPT_AUTHTTL, ARG_ONE, "<integer>", gettext_noop("Set TTL for authoritative replies"), NULL },
+  { LOPT_AUTHSOA, ARG_ONE, "<serial>[,...]", gettext_noop("Set authoritive zone information"), NULL },
+  { LOPT_AUTHSFS, ARG_DUP, "<NS>[,<NS>...]", gettext_noop("Secondary authoritative nameservers for forward domains"), NULL },
+  { LOPT_AUTHPEER, ARG_DUP, "<ipaddr>[,<ipaddr>...]", gettext_noop("Peers which are allowed to do zone transfer"), NULL },
+  { LOPT_IPSET, ARG_DUP, "/<domain>/<ipset>[,<ipset>...]", gettext_noop("Specify ipsets to which matching domains should be added"), NULL },
+  { LOPT_SYNTH, ARG_DUP, "<domain>,<range>,[<prefix>]", gettext_noop("Specify a domain and address range for sythesised names"), NULL },
+#ifdef OPTION6_PREFIX_CLASS 
+  { LOPT_PREF_CLSS, ARG_DUP, "set:tag,<class>", gettext_noop("Specify DHCPv6 prefix class"), NULL },
+#endif
   { 0, 0, NULL, NULL, NULL }
 }; 
 
@@ -605,24 +638,6 @@ static void do_usage(void)
 
 #define ret_err(x) do { strcpy(errstr, (x)); return 0; } while (0)
 
-#ifdef HAVE_DHCP
-
-static int is_tag_prefix(char *arg)
-{
-  if (arg && (strstr(arg, "net:") == arg || strstr(arg, "tag:") == arg))
-    return 1;
-  
-  return 0;
-}
-
-static char *set_prefix(char *arg)
-{
-   if (strstr(arg, "set:") == arg)
-     return arg+4;
-   
-   return arg;
-}
-
 char *parse_server(char *arg, union mysockaddr *addr, union mysockaddr *source_addr, char *interface, int *flags)
 {
   int source_port = 0, serv_port = NAMESERVER_PORT;
@@ -645,7 +660,7 @@ char *parse_server(char *arg, union mysockaddr *addr, union mysockaddr *source_a
   scope_id = split_chr(arg, '%');
 #endif
   
-  if ((addr->in.sin_addr.s_addr = inet_addr(arg)) != (in_addr_t) -1)
+  if (inet_pton(AF_INET, arg, &addr->in.sin_addr) > 0)
     {
       addr->in.sin_port = htons(serv_port);	
       addr->sa.sa_family = source_addr->sa.sa_family = AF_INET;
@@ -660,7 +675,7 @@ char *parse_server(char *arg, union mysockaddr *addr, union mysockaddr *source_a
 	  if (flags)
 	    *flags |= SERV_HAS_SOURCE;
 	  source_addr->in.sin_port = htons(source_port);
-	  if ((source_addr->in.sin_addr.s_addr = inet_addr(source)) == (in_addr_t) -1)
+	  if (!(inet_pton(AF_INET, source, &source_addr->in.sin_addr) > 0))
 	    {
 #if defined(SO_BINDTODEVICE)
 	      source_addr->in.sin_addr.s_addr = INADDR_ANY;
@@ -710,6 +725,24 @@ char *parse_server(char *arg, union mysockaddr *addr, union mysockaddr *source_a
   return NULL;
 }
 
+#ifdef HAVE_DHCP
+
+static int is_tag_prefix(char *arg)
+{
+  if (arg && (strstr(arg, "net:") == arg || strstr(arg, "tag:") == arg))
+    return 1;
+  
+  return 0;
+}
+
+static char *set_prefix(char *arg)
+{
+   if (strstr(arg, "set:") == arg)
+     return arg+4;
+   
+   return arg;
+}
+
 /* This is too insanely large to keep in-line in the switch */
 static int parse_dhcp_opt(char *errstr, char *arg, int flags)
 {
@@ -720,6 +753,7 @@ static int parse_dhcp_opt(char *errstr, char *arg, int flags)
   struct dhcp_netid *np = NULL;
   u16 opt_len = 0;
   int is6 = 0;
+  int option_ok = 0;
 
   new->len = 0;
   new->flags = flags;
@@ -739,14 +773,19 @@ static int parse_dhcp_opt(char *errstr, char *arg, int flags)
 	{
 	  new->opt = atoi(arg);
 	  opt_len = 0;
+	  option_ok = 1;
 	  break;
 	}
       
       if (strstr(arg, "option:") == arg)
 	{
-	  new->opt = lookup_dhcp_opt(AF_INET, arg+7);
-	  opt_len = lookup_dhcp_len(AF_INET, new->opt);
-	  /* option:<optname> must follow tag and vendor string. */
+	  if ((new->opt = lookup_dhcp_opt(AF_INET, arg+7)) != -1)
+	    {
+	      opt_len = lookup_dhcp_len(AF_INET, new->opt);
+	      /* option:<optname> must follow tag and vendor string. */
+	      if (!(opt_len & OT_INTERNAL) || flags == DHOPT_MATCH)
+		option_ok = 1;
+	    }
 	  break;
 	}
 #ifdef HAVE_DHCP6
@@ -760,11 +799,16 @@ static int parse_dhcp_opt(char *errstr, char *arg, int flags)
 	    {
 	      new->opt = atoi(arg+8);
 	      opt_len = 0;
+	      option_ok = 1;
 	    }
 	  else
 	    {
-	      new->opt = lookup_dhcp_opt(AF_INET6, arg+8);
-	      opt_len = lookup_dhcp_len(AF_INET6, new->opt);
+	      if ((new->opt = lookup_dhcp_opt(AF_INET6, arg+8)) != -1)
+		{
+		  opt_len = lookup_dhcp_len(AF_INET6, new->opt);
+		  if (!(opt_len & OT_INTERNAL) || flags == DHOPT_MATCH)
+		    option_ok = 1;
+		}
 	    }
 	  /* option6:<opt>|<optname> must follow tag and vendor string. */
 	  is6 = 1;
@@ -787,7 +831,7 @@ static int parse_dhcp_opt(char *errstr, char *arg, int flags)
 	  new->flags |= DHOPT_RFC3925;
 	  if (flags == DHOPT_MATCH)
 	    {
-	      new->opt = 1; /* avoid error below */
+	      option_ok = 1;
 	      break;
 	    }
 	}
@@ -814,16 +858,16 @@ static int parse_dhcp_opt(char *errstr, char *arg, int flags)
       
       if (opt_len == 0 &&
 	  !(new->flags & DHOPT_RFC3925))
-	opt_len = lookup_dhcp_len(AF_INET6 ,new->opt);
+	opt_len = lookup_dhcp_len(AF_INET6, new->opt);
     }
   else
 #endif
     if (opt_len == 0 &&
 	!(new->flags & (DHOPT_VENDOR | DHOPT_ENCAPSULATE | DHOPT_RFC3925)))
-      opt_len = lookup_dhcp_len(AF_INET ,new->opt);
+      opt_len = lookup_dhcp_len(AF_INET, new->opt);
   
   /* option may be missing with rfc3925 match */
-  if (new->opt == 0)
+  if (!option_ok)
     ret_err(_("bad dhcp-option"));
   
   if (comma)
@@ -987,7 +1031,7 @@ static int parse_dhcp_opt(char *errstr, char *arg, int flags)
 	      cp = comma;
 	      comma = split(cp);
 	      slash = split_chr(cp, '/');
-	      in.s_addr = inet_addr(cp);
+	      inet_pton(AF_INET, cp, &in);
 	      if (!slash)
 		{
 		  memcpy(op, &in, INADDRSZ);
@@ -1351,14 +1395,14 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	    strcat(path, "/");
 	    strcat(path, ent->d_name);
 
+	    /* files must be readable */
 	    if (stat(path, &buf) == -1)
 	      die(_("cannot access %s: %s"), path, EC_FILE);
-	    /* only reg files allowed. */
-	    if (!S_ISREG(buf.st_mode))
-	      continue;
 	    
-	    /* files must be readable */
-	    one_file(path, 0);
+	    /* only reg files allowed. */
+	    if (S_ISREG(buf.st_mode))
+	      one_file(path, 0);
+	    
 	    free(path);
 	  }
      
@@ -1513,7 +1557,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	    new->next = daemon->dhcp_hosts_file;
 	    daemon->dhcp_hosts_file = new;
 	  }
-	else if (option ==  LOPT_DHCP_OPTS)
+	else if (option == LOPT_DHCP_OPTS)
 	  {
 	    new->next = daemon->dhcp_opts_file;
 	    daemon->dhcp_opts_file = new;
@@ -1521,7 +1565,131 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	break;
       }
       
-    case 's': /* --domain */
+    case LOPT_AUTHSERV: /* --auth-server */
+      if (!(comma = split(arg)))
+	ret_err(gen_err);
+      
+      daemon->authserver = opt_string_alloc(arg);
+      arg = comma;
+      do {
+	struct iname *new = opt_malloc(sizeof(struct iname));
+	comma = split(arg);
+	new->name = NULL;
+	unhide_metas(arg);
+	if (inet_pton(AF_INET, arg, &new->addr.in.sin_addr) > 0)
+	  new->addr.sa.sa_family = AF_INET;
+#ifdef HAVE_IPV6
+	else if (inet_pton(AF_INET6, arg, &new->addr.in6.sin6_addr) > 0)
+	  new->addr.sa.sa_family = AF_INET6;
+#endif
+	else
+	  new->name = opt_string_alloc(arg);
+	
+	new->next = daemon->authinterface;
+	daemon->authinterface = new;
+	
+	arg = comma;
+      } while (arg);
+            
+      break;
+
+    case LOPT_AUTHSFS: /* --auth-sec-servers */
+      {
+	struct name_list *new;
+
+	do {
+	  comma = split(arg);
+	  new = opt_malloc(sizeof(struct name_list));
+	  new->name = opt_string_alloc(arg);
+	  new->next = daemon->secondary_forward_server;
+	  daemon->secondary_forward_server = new;
+	  arg = comma;
+	} while (arg);
+	break;
+      }
+	
+    case LOPT_AUTHZONE: /* --auth-zone */
+      {
+	struct auth_zone *new;
+	
+	comma = split(arg);
+		
+	new = opt_malloc(sizeof(struct auth_zone));
+	new->domain = opt_string_alloc(arg);
+	new->subnet = NULL;
+	new->next = daemon->auth_zones;
+	daemon->auth_zones = new;
+
+	while ((arg = comma))
+	  {
+	    int prefixlen = 0;
+	    char *prefix;
+	    struct subnet *subnet =  opt_malloc(sizeof(struct subnet));
+	    
+	    subnet->next = new->subnet;
+	    new->subnet = subnet;
+
+	    comma = split(arg);
+	    prefix = split_chr(arg, '/');
+	    
+	    if (prefix && !atoi_check(prefix, &prefixlen))
+	      ret_err(gen_err);
+	    
+	    if (inet_pton(AF_INET, arg, &subnet->addr4))
+	      {
+		subnet->prefixlen = (prefixlen == 0) ? 24 : prefixlen;
+		subnet->is6 = 0;
+	      }
+#ifdef HAVE_IPV6
+	    else if (inet_pton(AF_INET6, arg, &subnet->addr6))
+	      {
+		subnet->prefixlen = (prefixlen == 0) ? 64 : prefixlen;
+		subnet->is6 = 1;
+	      }
+#endif
+	    else
+	        ret_err(gen_err);
+	  }
+	break;
+      }
+
+    case  LOPT_AUTHSOA: /* --auth-soa */
+      comma = split(arg);
+      atoi_check(arg, (int *)&daemon->soa_sn);
+      if (comma)
+	{
+	  char *cp;
+	  arg = comma;
+	  comma = split(arg);
+	  daemon->hostmaster = opt_string_alloc(arg);
+	  for (cp = daemon->hostmaster; *cp; cp++)
+	    if (*cp == '@')
+	      *cp = '.';
+
+	  if (comma)
+	    {
+	      arg = comma;
+	      comma = split(arg); 
+	      atoi_check(arg, (int *)&daemon->soa_refresh);
+	      if (comma)
+		{
+		  arg = comma;
+		  comma = split(arg); 
+		  atoi_check(arg, (int *)&daemon->soa_retry);
+		  if (comma)
+		    {
+		      arg = comma;
+		      comma = split(arg); 
+		      atoi_check(arg, (int *)&daemon->soa_expiry);
+		    }
+		}
+	    }
+	}
+
+      break;
+
+    case 's':         /* --domain */
+    case LOPT_SYNTH:  /* --synth-domain */
       if (strcmp (arg, "#") == 0)
 	set_option_bool(OPT_RESOLV_DOMAIN);
       else
@@ -1534,8 +1702,10 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	    {
 	      if (comma)
 		{
-		  struct cond_domain *new = safe_malloc(sizeof(struct cond_domain));
+		  struct cond_domain *new = opt_malloc(sizeof(struct cond_domain));
 		  char *netpart;
+		  
+		  new->prefix = NULL;
 
 		  unhide_metas(comma);
 		  if ((netpart = split_chr(comma, '/')))
@@ -1553,25 +1723,30 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 			  new->end.s_addr = new->start.s_addr | htonl(mask);
 			  if (arg)
 			    {
-			      /* generate the equivalent of
-				 local=/<domain>/
-				 local=/xxx.yyy.zzz.in-addr.arpa/ */
-
-			      if (strcmp(arg, "local") != 0 || 
-				  (msize != 8 && msize != 16 && msize != 24))
+			      if (option != 's')
+				{
+				  if (!(new->prefix = canonicalise_opt(arg)) ||
+				      strlen(new->prefix) > MAXLABEL - INET_ADDRSTRLEN)
+				    ret_err(_("bad prefix"));
+				}
+			      else if (strcmp(arg, "local") != 0 ||
+				       (msize != 8 && msize != 16 && msize != 24))
 				ret_err(gen_err);
 			      else
 				{
+				  /* generate the equivalent of
+				     local=/<domain>/
+				     local=/xxx.yyy.zzz.in-addr.arpa/ */
 				  struct server *serv = opt_malloc(sizeof(struct server));
 				  in_addr_t a = ntohl(new->start.s_addr) >> 8;
 				  char *p;
-
+				  
 				  memset(serv, 0, sizeof(struct server));
 				  serv->domain = d;
 				  serv->flags = SERV_HAS_DOMAIN | SERV_NO_ADDR;
 				  serv->next = daemon->servers;
 				  daemon->servers = serv;
-
+				  
 				  serv = opt_malloc(sizeof(struct server));
 				  memset(serv, 0, sizeof(struct server));
 				  p = serv->domain = opt_malloc(25); /* strlen("xxx.yyy.zzz.in-addr.arpa")+1 */
@@ -1583,7 +1758,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 				    p += sprintf(p, "%d.", a & 0xff);
 				  a = a >> 8;
 				  p += sprintf(p, "%d.in-addr.arpa", a & 0xff);
-
+				  
 				  serv->flags = SERV_HAS_DOMAIN | SERV_NO_ADDR;
 				  serv->next = daemon->servers;
 				  daemon->servers = serv;
@@ -1596,11 +1771,11 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 			  u64 mask = (1LLU << (128 - msize)) - 1LLU;
 			  u64 addrpart = addr6part(&new->start6);
 			  new->is6 = 1;
-
+			  
 			  /* prefix==64 overflows the mask calculation above */
 			  if (msize == 64)
 			    mask = (u64)-1LL;
-
+			  
 			  new->end6 = new->start6;
 			  setaddr6part(&new->start6, addrpart & ~mask);
 			  setaddr6part(&new->end6, addrpart | mask);
@@ -1609,14 +1784,19 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 			    ret_err(gen_err);
 			  else if (arg)
 			    {
-			      /* generate the equivalent of
-				 local=/<domain>/
-				 local=/xxx.yyy.zzz.ip6.arpa/ */
-
-			      if (strcmp(arg, "local") != 0 || ((msize & 4) != 0))
+			      if (option != 's')
+				{
+				  if (!(new->prefix = canonicalise_opt(arg)) ||
+				      strlen(new->prefix) > MAXLABEL - INET6_ADDRSTRLEN)
+				    ret_err(_("bad prefix"));
+				}	
+			      else if (strcmp(arg, "local") != 0 || ((msize & 4) != 0))
 				ret_err(gen_err);
 			      else 
 				{
+				  /* generate the equivalent of
+				     local=/<domain>/
+				     local=/xxx.yyy.zzz.ip6.arpa/ */
 				  struct server *serv = opt_malloc(sizeof(struct server));
 				  char *p;
 				  
@@ -1647,7 +1827,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		      else
 			ret_err(gen_err);
 		    }
-		  else 
+		  else  
 		    {
 		      arg = split(comma);
 		      if (inet_pton(AF_INET, comma, &new->start))
@@ -1673,11 +1853,21 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		    }
 
 		  new->domain = d;
-		  new->next = daemon->cond_domain;
-		  daemon->cond_domain = new;		     
+		  if (option  == 's')
+		    {
+		      new->next = daemon->cond_domain;
+		      daemon->cond_domain = new;
+		    }
+		  else
+		    {
+		      new->next = daemon->synth_domains;
+		      daemon->synth_domains = new;
+		    }
 		}
-	      else
+	      else if (option == 's')
 		daemon->domain_suffix = d;
+	      else 
+		ret_err(gen_err);
 	    }
 	}
       break;
@@ -1735,7 +1925,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
       {
 	struct in_addr addr;
 	unhide_metas(arg);
-	if (arg && (addr.s_addr = inet_addr(arg)) != (in_addr_t)-1)
+	if (arg && (inet_pton(AF_INET, arg, &addr) > 0))
 	  {
 	    struct bogus_addr *baddr = opt_malloc(sizeof(struct bogus_addr));
 	    baddr->next = daemon->bogus_addr;
@@ -1748,14 +1938,15 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
       }
       
     case 'a':  /* --listen-address */
+    case LOPT_AUTHPEER: /* --auth-peer */
       do {
 	struct iname *new = opt_malloc(sizeof(struct iname));
 	comma = split(arg);
 	unhide_metas(arg);
-	new->next = daemon->if_addrs;
-	if (arg && (new->addr.in.sin_addr.s_addr = inet_addr(arg)) != (in_addr_t)-1)
+	if (arg && (inet_pton(AF_INET, arg, &new->addr.in.sin_addr) > 0))
 	  {
 	    new->addr.sa.sa_family = AF_INET;
+	    new->addr.in.sin_port = 0;
 #ifdef HAVE_SOCKADDR_SA_LEN
 	    new->addr.in.sin_len = sizeof(new->addr.in);
 #endif
@@ -1766,6 +1957,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	    new->addr.sa.sa_family = AF_INET6;
 	    new->addr.in6.sin6_flowinfo = 0;
 	    new->addr.in6.sin6_scope_id = 0;
+	    new->addr.in6.sin6_port = 0;
 #ifdef HAVE_SOCKADDR_SA_LEN
 	    new->addr.in6.sin6_len = sizeof(new->addr.in6);
 #endif
@@ -1775,7 +1967,16 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	  ret_err(gen_err);
 
 	new->used = 0;
-	daemon->if_addrs = new;
+	if (option == 'a')
+	  {
+	    new->next = daemon->if_addrs;
+	    daemon->if_addrs = new;
+	  }
+	else
+	  {
+	    new->next = daemon->auth_peers;
+	    daemon->auth_peers = new;
+	  } 
 	arg = comma;
       } while (arg);
       break;
@@ -1867,6 +2068,74 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	daemon->servers = newlist;
 	break;
       }
+
+    case LOPT_IPSET: /* --ipset */
+#ifndef HAVE_IPSET
+      ret_err(_("recompile with HAVE_IPSET defined to enable ipset directives"));
+      break;
+#else
+      {
+	 struct ipsets ipsets_head;
+	 struct ipsets *ipsets = &ipsets_head;
+	 int size;
+	 char *end;
+	 char **sets, **sets_pos;
+	 memset(ipsets, 0, sizeof(struct ipsets));
+	 unhide_metas(arg);
+	 if (arg && *arg == '/') 
+	   {
+	     arg++;
+	     while ((end = split_chr(arg, '/'))) 
+	       {
+		 char *domain = NULL;
+		 /* elide leading dots - they are implied in the search algorithm */
+		 while (*arg == '.')
+		   arg++;
+		 /* # matches everything and becomes a zero length domain string */
+		 if (strcmp(arg, "#") == 0 || !*arg)
+		   domain = "";
+		 else if (strlen(arg) != 0 && !(domain = canonicalise_opt(arg)))
+		   option = '?';
+		 ipsets->next = opt_malloc(sizeof(struct ipsets));
+		 ipsets = ipsets->next;
+		 memset(ipsets, 0, sizeof(struct ipsets));
+		 ipsets->domain = domain;
+		 arg = end;
+	       }
+	   } 
+	 else 
+	   {
+	     ipsets->next = opt_malloc(sizeof(struct ipsets));
+	     ipsets = ipsets->next;
+	     memset(ipsets, 0, sizeof(struct ipsets));
+	     ipsets->domain = "";
+	   }
+	 if (!arg || !*arg)
+	   {
+	     option = '?';
+	     break;
+	   }
+	 size = 2;
+	 for (end = arg; *end; ++end) 
+	   if (*end == ',')
+	       ++size;
+     
+	 sets = sets_pos = opt_malloc(sizeof(char *) * size);
+	 
+	 do {
+	   end = split(arg);
+	   *sets_pos++ = opt_string_alloc(arg);
+	   arg = end;
+	 } while (end);
+	 *sets_pos = 0;
+	 for (ipsets = &ipsets_head; ipsets->next; ipsets = ipsets->next)
+	   ipsets->next->sets = sets;
+	 ipsets->next = daemon->ipsets;
+	 daemon->ipsets = ipsets_head.next;
+	 
+	 break;
+      }
+#endif
       
     case 'c':  /* --cache-size */
       {
@@ -1933,6 +2202,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
     case LOPT_NEGTTL: /* --neg-ttl */
     case LOPT_MAXTTL: /* --max-ttl */
     case LOPT_MAXCTTL: /* --max-cache-ttl */
+    case LOPT_AUTHTTL: /* --auth-ttl */
       {
 	int ttl;
 	if (!atoi_check(arg, &ttl))
@@ -1943,6 +2213,8 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	  daemon->max_ttl = (unsigned long)ttl;
 	else if (option == LOPT_MAXCTTL)
 	  daemon->max_cache_ttl = (unsigned long)ttl;
+	else if (option == LOPT_AUTHTTL)
+	  daemon->auth_ttl = (unsigned long)ttl;
 	else
 	  daemon->local_ttl = (unsigned long)ttl;
 	break;
@@ -2021,7 +2293,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
     case 'F':  /* --dhcp-range */
       {
 	int k, leasepos = 2;
-	char *cp, *a[7] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL };
+	char *cp, *a[8] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
 	struct dhcp_context *new = opt_malloc(sizeof(struct dhcp_context));
 	
 	memset (new, 0, sizeof(*new));
@@ -2068,7 +2340,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	      }
 	  }
 	
-	for (k = 1; k < 7; k++)
+	for (k = 1; k < 8; k++)
 	  if (!(a[k] = split(a[k-1])))
 	    break;
 	
@@ -2095,7 +2367,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	      }
 	    
 	    if (k >= 3 && strchr(a[2], '.') &&  
-		((new->netmask.s_addr = inet_addr(a[2])) != (in_addr_t)-1))
+		(inet_pton(AF_INET, a[2], &new->netmask) > 0))
 	      {
 		new->flags |= CONTEXT_NETMASK;
 		leasepos = 3;
@@ -2104,7 +2376,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	      }
 	    
 	    if (k >= 4 && strchr(a[3], '.') &&  
-		((new->broadcast.s_addr = inet_addr(a[3])) != (in_addr_t)-1))
+		(inet_pton(AF_INET, a[3], &new->broadcast) > 0))
 	      {
 		new->flags |= CONTEXT_BRDCAST;
 		leasepos = 4;
@@ -2125,28 +2397,30 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		if (strcmp(a[leasepos], "static") == 0)
 		  new->flags |= CONTEXT_STATIC | CONTEXT_DHCP;
 		else if (strcmp(a[leasepos], "ra-only") == 0 || strcmp(a[leasepos], "slaac") == 0 )
-		  new->flags |= CONTEXT_RA_ONLY;
+		  new->flags |= CONTEXT_RA_ONLY | CONTEXT_RA;
 		else if (strcmp(a[leasepos], "ra-names") == 0)
-		  new->flags |= CONTEXT_RA_NAME;
+		  new->flags |= CONTEXT_RA_NAME | CONTEXT_RA;
 		else if (strcmp(a[leasepos], "ra-stateless") == 0)
-		  new->flags |= CONTEXT_RA_STATELESS | CONTEXT_DHCP;
+		  new->flags |= CONTEXT_RA_STATELESS | CONTEXT_DHCP | CONTEXT_RA;
 		else if (leasepos == 1 && inet_pton(AF_INET6, a[leasepos], &new->end6))
 		  new->flags |= CONTEXT_DHCP; 
+		else if (strstr(a[leasepos], "constructor:") == a[leasepos])
+		  {
+		    new->template_interface = opt_string_alloc(a[leasepos] + 12);
+		    new->flags |= CONTEXT_TEMPLATE;
+		  }
+		else if (strstr(a[leasepos], "constructor-noauth:") == a[leasepos])
+		  {
+		    new->template_interface = opt_string_alloc(a[leasepos] + 19);
+		    new->flags |= CONTEXT_TEMPLATE | CONTEXT_NOAUTH;
+		  }
 		else  
 		  break;
 	      }
 	    
-	    if (new->flags & CONTEXT_DHCP)
-	      {
-		new->next = daemon->dhcp6;
-		daemon->dhcp6 = new;
-	      }
-	    else
-	      {
-		new->next = daemon->ra_contexts;
-		daemon->ra_contexts = new;
-	      }
-	     
+	    new->next = daemon->dhcp6;
+	    daemon->dhcp6 = new;
+	    	     
 	    /* bare integer < 128 is prefix value */
 	    if (leasepos < k)
 	      {
@@ -2158,10 +2432,14 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		  {
 		    new->prefix = pref;
 		    leasepos++;
-		    if ((new->flags & (CONTEXT_RA_ONLY | CONTEXT_RA_NAME | CONTEXT_RA_STATELESS)) && 
-			new->prefix != 64)
-		      ret_err(_("prefix must be exactly 64 for RA subnets"));
-		    else if (new->prefix < 64)
+		    if (new->prefix != 64)
+		      {
+			if ((new->flags & (CONTEXT_RA_ONLY | CONTEXT_RA_NAME | CONTEXT_RA_STATELESS)))
+			  ret_err(_("prefix must be exactly 64 for RA subnets"));
+			else if (new->template_interface)
+			  ret_err(_("prefix must be exactly 64 for subnet constructors"));
+		      }
+		    if (new->prefix < 64)
 		      ret_err(_("prefix must be at least 64"));
 		  }
 	      }
@@ -2176,6 +2454,8 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	      }
 	  }
 #endif
+	else
+	  ret_err(_("bad dhcp-range"));
 	
 	if (leasepos < k)
 	  {
@@ -2211,6 +2491,13 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 			a[leasepos][strlen(a[leasepos]) - 1] = 0;
 		      }
 		    
+		    for (cp = a[leasepos]; *cp; cp++)
+		      if (!(*cp >= '0' && *cp <= '9'))
+			break;
+
+		    if (*cp || (leasepos+1 < k))
+		      ret_err(_("bad dhcp-range"));
+		    
 		    new->lease_time = atoi(a[leasepos]) * fac;
 		    /* Leases of a minute or less confuse
 		       some clients, notably Apple's */
@@ -2226,7 +2513,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
     case 'G':  /* --dhcp-host */
       {
 	int j, k = 0;
-	char *a[6] = { NULL, NULL, NULL, NULL, NULL, NULL };
+	char *a[7] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL };
 	struct dhcp_config *new;
 	struct in_addr in;
 	
@@ -2238,7 +2525,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	new->netid = NULL;
 
 	if ((a[0] = arg))
-	  for (k = 1; k < 6; k++)
+	  for (k = 1; k < 7; k++)
 	    if (!(a[k] = split(a[k-1])))
 	      break;
 	
@@ -2298,6 +2585,14 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		  
 		  if (!inet_pton(AF_INET6, arg, &new->addr6))
 		    ret_err(_("bad IPv6 address"));
+
+		  for (i= 0; i < 8; i++)
+		    if (new->addr6.s6_addr[i] != 0)
+		      break;
+
+		  /* set WILDCARD if network part all zeros */
+		  if (i == 8)
+		    new->flags |= CONFIG_WILDCARD;
 		  
 		  new->flags |= CONFIG_ADDR6;
 		}
@@ -2316,7 +2611,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		    }		    
 		}
 	    }
-	  else if (strchr(a[j], '.') && (in.s_addr = inet_addr(a[j])) != (in_addr_t)-1)
+	  else if (strchr(a[j], '.') && (inet_pton(AF_INET, a[j], &in) > 0))
 	    {
 	      struct dhcp_config *configs;
 	      
@@ -2458,6 +2753,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		else 
 		  {
 		    new->set = NULL;
+		    free(newtag);
 		    break;
 		  }
 	      }
@@ -2512,17 +2808,17 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 		if (comma)
 		  {
 		    unhide_metas(comma);
-		    if ((dhcp_next_server.s_addr = inet_addr(comma)) == (in_addr_t)-1) {
-
-		      /*
-		       * The user may have specified the tftp hostname here.
-		       * save it so that it can be resolved/looked up during
-		       * actual dhcp_reply().
-		       */	
-
-		      tftp_sname = opt_string_alloc(comma);
-		      dhcp_next_server.s_addr = 0;
-		    }
+		    if (!(inet_pton(AF_INET, comma, &dhcp_next_server) > 0))
+		      {
+			/*
+			 * The user may have specified the tftp hostname here.
+			 * save it so that it can be resolved/looked up during
+			 * actual dhcp_reply().
+			 */	
+			
+			tftp_sname = opt_string_alloc(comma);
+			dhcp_next_server.s_addr = 0;
+		      }
 		  }
 	      }
 	    
@@ -2535,7 +2831,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	    new->next = daemon->boot_config;
 	    daemon->boot_config = new;
 	  }
-	
+      
 	break;
       }
 
@@ -2689,7 +2985,25 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	  }
       }
       break;
-      
+
+#ifdef OPTION6_PREFIX_CLASS 
+    case LOPT_PREF_CLSS: /* --dhcp-prefix-class */
+      {
+	struct prefix_class *new = opt_malloc(sizeof(struct prefix_class));
+	
+	if (!(comma = split(arg)) ||
+	    !atoi_check16(comma, &new->class))
+	  ret_err(gen_err);
+	
+	new->tag.net = opt_string_alloc(set_prefix(arg));
+	new->next = daemon->prefix_classes;
+	daemon->prefix_classes = new;
+	
+	break;
+      }
+#endif
+			      
+
     case 'U':           /* --dhcp-vendorclass */
     case 'j':           /* --dhcp-userclass */
     case LOPT_CIRCUIT:  /* --dhcp-circuitid */
@@ -2833,7 +3147,7 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
       while (arg) {
 	struct addr_list *new = opt_malloc(sizeof(struct addr_list));
 	comma = split(arg);
-	if ((new->addr.s_addr = inet_addr(arg)) == (in_addr_t)-1)
+	if (!(inet_pton(AF_INET, arg, &new->addr) > 0))
 	  ret_err(_("bad dhcp-proxy address"));
 	new->next = daemon->override_relays;
 	daemon->override_relays = new;
@@ -2876,15 +3190,15 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	dash = split_chr(a[0], '-');
 
 	if ((k < 2) || 
-	    ((new->in.s_addr = inet_addr(a[0])) == (in_addr_t)-1) ||
-	    ((new->out.s_addr = inet_addr(a[1])) == (in_addr_t)-1))
+	    (!(inet_pton(AF_INET, a[0], &new->in) > 0)) ||
+	    (!(inet_pton(AF_INET, a[1], &new->out) > 0)))
 	  option = '?';
 	
 	if (k == 3)
-	  new->mask.s_addr = inet_addr(a[2]);
+	  inet_pton(AF_INET, a[2], &new->mask);
 	
 	if (dash && 
-	    ((new->end.s_addr = inet_addr(dash)) == (in_addr_t)-1 ||
+	    (!(inet_pton(AF_INET, dash, &new->end) > 0) ||
 	     !is_same_net(new->in, new->end, new->mask) ||
 	     ntohl(new->in.s_addr) > ntohl(new->end.s_addr)))
 	  ret_err(_("invalid alias range"));
@@ -2904,6 +3218,10 @@ static int one_opt(int option, char *arg, char *errstr, char *gen_err, int comma
 	
 	new = opt_malloc(sizeof(struct interface_name));
 	new->next = NULL;
+	new->addr4 = NULL;
+#ifdef HAVE_IPV6
+	new->addr6 = NULL;
+#endif
 	/* Add to the end of the list, so that first name
 	   of an interface is used for PTR lookups. */
 	for (up = &daemon->int_names; *up; up = &((*up)->next));
@@ -3613,6 +3931,10 @@ void read_opts(int argc, char **argv, char *compile_opts)
   daemon->tftp_max = TFTP_MAX_CONNECTIONS;
   daemon->edns_pktsz = EDNS_PKTSZ;
   daemon->log_fac = -1;
+  daemon->auth_ttl = AUTH_TTL; 
+  daemon->soa_refresh = SOA_REFRESH;
+  daemon->soa_retry = SOA_RETRY;
+  daemon->soa_expiry = SOA_EXPIRY;
   add_txt("version.bind", "dnsmasq-" VERSION );
   add_txt("authors.bind", "Simon Kelley");
   add_txt("copyright.bind", COPYRIGHT);
@@ -3720,7 +4042,15 @@ void read_opts(int argc, char **argv, char *compile_opts)
 	  tmp->addr.in6.sin6_port = htons(daemon->port);
 #endif /* IPv6 */
     }
-		      
+	
+  /* create default, if not specified */
+  if (daemon->authserver && !daemon->hostmaster)
+    {
+      strcpy(buff, "hostmaster.");
+      strcat(buff, daemon->authserver);
+      daemon->hostmaster = opt_string_alloc(buff);
+    }
+  
   /* only one of these need be specified: the other defaults to the host-name */
   if (option_bool(OPT_LOCALMX) || daemon->mxnames || daemon->mxtarget)
     {

src/outpacket.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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

src/radv-protocol.h

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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

src/radv.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -27,25 +27,28 @@
 #include <netinet/icmp6.h>
 
 struct ra_param {
+  time_t now;
   int ind, managed, other, found_context, first;
   char *if_name;
   struct dhcp_netid *tags;
-  struct in6_addr link_local;
+  struct in6_addr link_local, link_global;
+  unsigned int pref_time;
 };
 
 struct search_param {
   time_t now; int iface;
 };
 
-static void send_ra(int iface, char *iface_name, struct in6_addr *dest);
+static void send_ra(time_t now, int iface, char *iface_name, struct in6_addr *dest);
 static int add_prefixes(struct in6_addr *local,  int prefix,
-			int scope, int if_index, int dad, void *vparam);
+			int scope, int if_index, int flags, 
+			unsigned int preferred, unsigned int valid, void *vparam);
 static int iface_search(struct in6_addr *local,  int prefix,
-			int scope, int if_index, int dad, void *vparam);
+			int scope, int if_index, int flags, 
+			int prefered, int valid, void *vparam);
 static int add_lla(int index, unsigned int type, char *mac, size_t maclen, void *parm);
 
 static int hop_limit;
-static time_t ra_short_period_start;
 
 void ra_init(time_t now)
 {
@@ -62,7 +65,7 @@ void ra_init(time_t now)
   expand_buf(&daemon->outpacket, sizeof(struct dhcp_packet));
  
   /* See if we're guessing SLAAC addresses, if so we need to recieve ping replies */
-  for (context = daemon->ra_contexts; context; context = context->next)
+  for (context = daemon->dhcp6; context; context = context->next)
     if ((context->flags & CONTEXT_RA_NAME))
       break;
   
@@ -94,18 +97,20 @@ void ra_start_unsolicted(time_t now, struct dhcp_context *context)
      if it's not appropriate to advertise those contexts.
      This gets re-called on a netlink route-change to re-do the advertisement
      and pick up new interfaces */
-
+  
   if (context)
-     context->ra_time = now;
+    context->ra_short_period_start = context->ra_time = now;
   else
-    for (context = daemon->ra_contexts; context; context = context->next)
-      context->ra_time = now + (rand16()/13000); /* range 0 - 5 */
-
-   /* re-do frequently for a minute or so, in case the first gets lost. */
-   ra_short_period_start = now;
+    for (context = daemon->dhcp6; context; context = context->next)
+      if (!(context->flags & CONTEXT_TEMPLATE))
+	{
+	  context->ra_time = now + (rand16()/13000); /* range 0 - 5 */
+	  /* re-do frequently for a minute or so, in case the first gets lost. */
+	  context->ra_short_period_start = now;
+	}
 }
 
-void icmp6_packet(void)
+void icmp6_packet(time_t now)
 {
   char interface[IF_NAMESIZE+1];
   ssize_t sz; 
@@ -149,11 +154,11 @@ void icmp6_packet(void)
   if (!indextoname(daemon->icmp6fd, if_index, interface))
     return;
     
-  if (!iface_check(AF_LOCAL, NULL, interface))
+  if (!iface_check(AF_LOCAL, NULL, interface, NULL))
     return;
   
   for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
-    if (tmp->name && (strcmp(tmp->name, interface) == 0))
+    if (tmp->name && wildcard_match(tmp->name, interface))
       return;
  
   if (packet[1] != 0)
@@ -174,11 +179,11 @@ void icmp6_packet(void)
          
       my_syslog(MS_DHCP | LOG_INFO, "RTR-SOLICIT(%s) %s", interface, mac);
       /* source address may not be valid in solicit request. */
-      send_ra(if_index, interface, !IN6_IS_ADDR_UNSPECIFIED(&from.sin6_addr) ? &from.sin6_addr : NULL);
+      send_ra(now, if_index, interface, !IN6_IS_ADDR_UNSPECIFIED(&from.sin6_addr) ? &from.sin6_addr : NULL);
     }
 }
 
-static void send_ra(int iface, char *iface_name, struct in6_addr *dest)
+static void send_ra(time_t now, int iface, char *iface_name, struct in6_addr *dest)
 {
   struct ra_packet *ra;
   struct ra_param parm;
@@ -188,7 +193,10 @@ static void send_ra(int iface, char *iface_name, struct in6_addr *dest)
   struct dhcp_netid iface_id;
   struct dhcp_opt *opt_cfg;
   int done_dns = 0;
- 
+#ifdef HAVE_LINUX_NETWORK
+  FILE *f;
+#endif
+
   save_counter(0);
   ra = expand(sizeof(struct ra_packet));
   
@@ -196,7 +204,7 @@ static void send_ra(int iface, char *iface_name, struct in6_addr *dest)
   ra->code = 0;
   ra->hop_limit = hop_limit;
   ra->flags = 0x00;
-  ra->lifetime = htons(1800); /* AdvDefaultLifetime*/
+  ra->lifetime = htons(RA_INTERVAL * 3); /* AdvDefaultLifetime * 3 */
   ra->reachable_time = 0;
   ra->retrans_time = 0;
 
@@ -206,13 +214,15 @@ static void send_ra(int iface, char *iface_name, struct in6_addr *dest)
   parm.found_context = 0;
   parm.if_name = iface_name;
   parm.first = 1;
-
+  parm.now = now;
+  parm.pref_time = 0;
+  
   /* set tag with name == interface */
   iface_id.net = iface_name;
   iface_id.next = NULL;
   parm.tags = &iface_id; 
   
-  for (context = daemon->ra_contexts; context; context = context->next)
+  for (context = daemon->dhcp6; context; context = context->next)
     {
       context->flags &= ~CONTEXT_RA_DONE;
       context->netid.next = &context->netid;
@@ -223,14 +233,23 @@ static void send_ra(int iface, char *iface_name, struct in6_addr *dest)
     return;
 
   strncpy(ifr.ifr_name, iface_name, IF_NAMESIZE);
-  
-  if (ioctl(daemon->icmp6fd, SIOCGIFMTU, &ifr) != -1)
+
+#ifdef HAVE_LINUX_NETWORK
+  /* Note that IPv6 MTU is not necessarilly the same as the IPv4 MTU
+     available from SIOCGIFMTU */
+  sprintf(daemon->namebuff, "/proc/sys/net/ipv6/conf/%s/mtu", iface_name);
+  if ((f = fopen(daemon->namebuff, "r")))
     {
-      put_opt6_char(ICMP6_OPT_MTU);
-      put_opt6_char(1);
-      put_opt6_short(0);
-      put_opt6_long(ifr.ifr_mtu);
+      if (fgets(daemon->namebuff, MAXDNAME, f))
+	{
+	  put_opt6_char(ICMP6_OPT_MTU);
+	  put_opt6_char(1);
+	  put_opt6_short(0);
+	  put_opt6_long(atoi(daemon->namebuff));
+	}
+      fclose(f);
     }
+#endif
      
   iface_enumerate(AF_LOCAL, &iface, add_lla);
  
@@ -256,11 +275,11 @@ static void send_ra(int iface, char *iface_name, struct in6_addr *dest)
 	  put_opt6_char(ICMP6_OPT_RDNSS);
 	  put_opt6_char((opt_cfg->len/8) + 1);
 	  put_opt6_short(0);
-	  put_opt6_long(1800); /* lifetime - twice RA retransmit */
+	  put_opt6_long(RA_INTERVAL * 2); /* lifetime - twice RA retransmit */
 	  /* zero means "self" */
 	  for (i = 0; i < opt_cfg->len; i += IN6ADDRSZ, a++)
 	    if (IN6_IS_ADDR_UNSPECIFIED(a))
-	      put_opt6(&parm.link_local, IN6ADDRSZ);
+	      put_opt6(&parm.link_global, IN6ADDRSZ);
 	    else
 	      put_opt6(a, IN6ADDRSZ);
 	}
@@ -281,14 +300,14 @@ static void send_ra(int iface, char *iface_name, struct in6_addr *dest)
 	}
     }
 	
-  if (!done_dns)
+  if (daemon->port == NAMESERVER_PORT && !done_dns)
     {
-      /* default == us. */
+      /* default == us, as long as we are supplying DNS service. */
       put_opt6_char(ICMP6_OPT_RDNSS);
       put_opt6_char(3);
       put_opt6_short(0);
-      put_opt6_long(1800); /* lifetime - twice RA retransmit */
-      put_opt6(&parm.link_local, IN6ADDRSZ);
+      put_opt6_long(RA_INTERVAL * 2); /* lifetime - twice RA retransmit */
+      put_opt6(&parm.link_global, IN6ADDRSZ);
     }
 
   /* set managed bits unless we're providing only RA on this link */
@@ -320,29 +339,30 @@ static void send_ra(int iface, char *iface_name, struct in6_addr *dest)
 }
 
 static int add_prefixes(struct in6_addr *local,  int prefix,
-			int scope, int if_index, int dad, void *vparam)
+			int scope, int if_index, int flags, 
+			unsigned int preferred, unsigned int valid, void *vparam)
 {
   struct ra_param *param = vparam;
 
   (void)scope; /* warning */
-  (void)dad;
-
+  
   if (if_index == param->ind)
     {
       if (IN6_IS_ADDR_LINKLOCAL(local))
 	param->link_local = *local;
       else if (!IN6_IS_ADDR_LOOPBACK(local) &&
-	       !IN6_IS_ADDR_LINKLOCAL(local) &&
 	       !IN6_IS_ADDR_MULTICAST(local))
 	{
 	  int do_prefix = 0;
 	  int do_slaac = 0;
 	  int deprecate  = 0;
+	  int constructed = 0;
 	  unsigned int time = 0xffffffff;
 	  struct dhcp_context *context;
 	  
-	  for (context = daemon->ra_contexts; context; context = context->next)
-	    if (prefix == context->prefix &&
+	  for (context = daemon->dhcp6; context; context = context->next)
+	    if (!(context->flags & CONTEXT_TEMPLATE) &&
+		prefix == context->prefix &&
 		is_same_net6(local, &context->start6, prefix) &&
 		is_same_net6(local, &context->end6, prefix))
 	      {
@@ -365,13 +385,21 @@ static int add_prefixes(struct in6_addr *local,  int prefix,
 		    param->managed = 1;
 		    param->other = 1;
 		  }
-
-		/* find floor time */
-		if (time > context->lease_time)
-		  time = context->lease_time;
 		
+		/* find floor time, don't reduce below RA interval. */
+		if (time > context->lease_time)
+		  {
+		    time = context->lease_time;
+		    if (time < ((unsigned int)RA_INTERVAL))
+		      time = RA_INTERVAL;
+		  }
+
 		if (context->flags & CONTEXT_DEPRECATE)
 		  deprecate = 1;
+		
+		if (context->flags & CONTEXT_CONSTRUCTED)
+		  constructed = 1;
+
 
 		/* collect dhcp-range tags */
 		if (context->netid.next == &context->netid && context->netid.net)
@@ -395,6 +423,26 @@ static int add_prefixes(struct in6_addr *local,  int prefix,
 		param->first = 0;	
 		param->found_context = 1;
 	      }
+
+	  /* configured time is ceiling */
+	  if (!constructed || valid > time)
+	    valid = time;
+	  
+	  if (flags & IFACE_DEPRECATED)
+	    preferred = 0;
+	  
+	  if (deprecate)
+	    time = 0;
+	  
+	  /* configured time is ceiling */
+	  if (!constructed || preferred > time)
+	    preferred = time;
+	    	  
+	  if (preferred > param->pref_time)
+	    {
+	      param->pref_time = preferred;
+	      param->link_global = *local;
+	    }
 	  
 	  if (do_prefix)
 	    {
@@ -405,17 +453,13 @@ static int add_prefixes(struct in6_addr *local,  int prefix,
 		  /* zero net part of address */
 		  setaddr6part(local, addr6part(local) & ~((prefix == 64) ? (u64)-1LL : (1LLU << (128 - prefix)) - 1LLU));
 		  
-		  /* lifetimes must be min 2 hrs, by RFC 2462 */
-		  if (time < 7200)
-		    time = 7200;
-		  
 		  opt->type = ICMP6_OPT_PREFIX;
 		  opt->len = 4;
 		  opt->prefix_len = prefix;
 		  /* autonomous only if we're not doing dhcp, always set "on-link" */
 		  opt->flags = do_slaac ? 0xC0 : 0x80;
-		  opt->valid_lifetime = htonl(time);
-		  opt->preferred_lifetime = htonl(deprecate ? 0 : time);
+		  opt->valid_lifetime = htonl(valid);
+		  opt->preferred_lifetime = htonl(preferred);
 		  opt->reserved = 0; 
 		  opt->prefix = *local;
 		  
@@ -462,7 +506,7 @@ time_t periodic_ra(time_t now)
   while (1)
     {
       /* find overdue events, and time of first future event */
-      for (next_event = 0, context = daemon->ra_contexts; context; context = context->next)
+      for (next_event = 0, context = daemon->dhcp6; context; context = context->next)
 	if (context->ra_time != 0)
 	  {
 	    if (difftime(context->ra_time, now) <= 0.0)
@@ -485,58 +529,62 @@ time_t periodic_ra(time_t now)
 	context->ra_time = 0;
       else if (param.iface != 0 &&
 	       indextoname(daemon->icmp6fd, param.iface, interface) &&
-	       iface_check(AF_LOCAL, NULL, interface))
+	       iface_check(AF_LOCAL, NULL, interface, NULL))
 	{
 	  struct iname *tmp;
 	  for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
-	    if (tmp->name && (strcmp(tmp->name, interface) == 0))
+	    if (tmp->name && wildcard_match(tmp->name, interface))
 	      break;
 	  if (!tmp)
-	    send_ra(param.iface, interface, NULL); 
+	    send_ra(now, param.iface, interface, NULL); 
 	}
     }      
   return next_event;
 }
   
 static int iface_search(struct in6_addr *local,  int prefix,
-			int scope, int if_index, int dad, void *vparam)
+			int scope, int if_index, int flags, 
+			int preferred, int valid, void *vparam)
 {
   struct search_param *param = vparam;
   struct dhcp_context *context;
 
   (void)scope;
-  (void)dad;
+  (void)preferred;
+  (void)valid;
  
-  for (context = daemon->ra_contexts; context; context = context->next)
-    if (prefix == context->prefix &&
+  for (context = daemon->dhcp6; context; context = context->next)
+    if (!(context->flags & CONTEXT_TEMPLATE) &&
+	prefix == context->prefix &&
 	is_same_net6(local, &context->start6, prefix) &&
-	is_same_net6(local, &context->end6, prefix))
-      if (context->ra_time != 0 && difftime(context->ra_time, param->now) <= 0.0)
-	{
-	  /* found an interface that's overdue for RA determine new 
-	     timeout value and arrange for RA to be sent unless interface is
-	     still doing DAD.*/
-
-	  if (!dad)
-	    param->iface = if_index;
-	  
-	  if (difftime(param->now, ra_short_period_start) < 60.0)
-	    /* range 5 - 20 */
-	    context->ra_time = param->now + 5 + (rand16()/4400);
-	  else
-	    /* range 450 - 600 */
-	    context->ra_time = param->now + 450 + (rand16()/440);
-	  
-	  /* zero timers for other contexts on the same subnet, so they don't timeout 
-	     independently */
-	  for (context = context->next; context; context = context->next)
-	    if (prefix == context->prefix &&
-		is_same_net6(local, &context->start6, prefix) &&
-		is_same_net6(local, &context->end6, prefix))
-	      context->ra_time = 0;
-	  
-	  return 0; /* found, abort */
-	}
+	is_same_net6(local, &context->end6, prefix) &&
+	context->ra_time != 0 && 
+	difftime(context->ra_time, param->now) <= 0.0)
+      {
+	/* found an interface that's overdue for RA determine new 
+	   timeout value and arrange for RA to be sent unless interface is
+	   still doing DAD.*/
+	
+	if (!(flags & IFACE_TENTATIVE))
+	  param->iface = if_index;
+	
+	if (difftime(param->now, context->ra_short_period_start) < 60.0)
+	  /* range 5 - 20 */
+	  context->ra_time = param->now + 5 + (rand16()/4400);
+	else
+	  /* range 3/4 - 1 times RA_INTERVAL */
+	  context->ra_time = param->now + (3 * RA_INTERVAL)/4 + ((RA_INTERVAL * (unsigned int)rand16()) >> 18);
+	
+	/* zero timers for other contexts on the same subnet, so they don't timeout 
+	   independently */
+	for (context = context->next; context; context = context->next)
+	  if (prefix == context->prefix &&
+	      is_same_net6(local, &context->start6, prefix) &&
+	      is_same_net6(local, &context->end6, prefix))
+	    context->ra_time = 0;
+	
+	return 0; /* found, abort */
+      }
   
   return 1; /* keep searching */
 }

src/rfc1035.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -16,10 +16,6 @@
 
 #include "dnsmasq.h"
 
-static int add_resource_record(struct dns_header *header, char *limit, int *truncp, 
-			       unsigned int nameoffset, unsigned char **pp, 
-			       unsigned long ttl, unsigned int *offset, unsigned short type, 
-			       unsigned short class, char *format, ...);
 
 #define CHECK_LEN(header, pp, plen, len) \
     ((size_t)((pp) - (unsigned char *)(header) + (len)) <= (plen))
@@ -27,8 +23,8 @@ static int add_resource_record(struct dns_header *header, char *limit, int *trun
 #define ADD_RDLEN(header, pp, plen, len) \
   (!CHECK_LEN(header, pp, plen, len) ? 0 : (((pp) += (len)), 1))
 
-static int extract_name(struct dns_header *header, size_t plen, unsigned char **pp, 
-			char *name, int isExtract, int extrabytes)
+int extract_name(struct dns_header *header, size_t plen, unsigned char **pp, 
+		 char *name, int isExtract, int extrabytes)
 {
   unsigned char *cp = (unsigned char *)name, *p = *pp, *p1 = NULL;
   unsigned int j, l, hops = 0;
@@ -173,7 +169,7 @@ static int extract_name(struct dns_header *header, size_t plen, unsigned char **
  
 /* Max size of input string (for IPv6) is 75 chars.) */
 #define MAXARPANAME 75
-static int in_arpa_name_2_addr(char *namein, struct all_addr *addrp)
+int in_arpa_name_2_addr(char *namein, struct all_addr *addrp)
 {
   int j;
   char name[MAXARPANAME+1], *cp1;
@@ -333,7 +329,7 @@ static unsigned char *skip_name(unsigned char *ansp, struct dns_header *header,
   return ansp;
 }
 
-static unsigned char *skip_questions(struct dns_header *header, size_t plen)
+unsigned char *skip_questions(struct dns_header *header, size_t plen)
 {
   int q;
   unsigned char *ansp = (unsigned char *)(header+1);
@@ -781,13 +777,18 @@ static int find_soa(struct dns_header *header, size_t qlen, char *name)
    expired and cleaned out that way. 
    Return 1 if we reject an address because it look like part of dns-rebinding attack. */
 int extract_addresses(struct dns_header *header, size_t qlen, char *name, time_t now, 
-		      int is_sign, int check_rebind, int checking_disabled)
+		      char **ipsets, int is_sign, int check_rebind, int checking_disabled)
 {
   unsigned char *p, *p1, *endrr, *namep;
   int i, j, qtype, qclass, aqtype, aqclass, ardlen, res, searched_soa = 0;
   unsigned long ttl = 0;
   struct all_addr addr;
-
+#ifdef HAVE_IPSET
+  char **ipsets_cur;
+#else
+  (void)ipsets; /* unused */
+#endif
+  
   cache_start_insert();
 
   /* find_soa is needed for dns_doctor and logging side-effects, so don't call it lazily if there are any. */
@@ -970,6 +971,15 @@ int extract_addresses(struct dns_header *header, size_t qlen, char *name, time_t
 			      (flags & F_IPV4) &&
 			      private_net(addr.addr.addr4, !option_bool(OPT_LOCAL_REBIND)))
 			    return 1;
+
+#ifdef HAVE_IPSET
+			  if (ipsets && (flags & (F_IPV4 | F_IPV6)))
+			    {
+			      ipsets_cur = ipsets;
+			      while (*ipsets_cur)
+				add_to_ipset(*ipsets_cur++, &addr, flags, 0);
+			    }
+#endif
 			  
 			  newc = cache_insert(name, &addr, now, attl, flags | F_FORWARD);
 			  if (newc && cpp)
@@ -1189,8 +1199,8 @@ int check_for_bogus_wildcard(struct dns_header *header, size_t qlen, char *name,
   return 0;
 }
 
-static int add_resource_record(struct dns_header *header, char *limit, int *truncp, unsigned int nameoffset, unsigned char **pp, 
-			       unsigned long ttl, unsigned int *offset, unsigned short type, unsigned short class, char *format, ...)
+int add_resource_record(struct dns_header *header, char *limit, int *truncp, int nameoffset, unsigned char **pp, 
+			unsigned long ttl, int *offset, unsigned short type, unsigned short class, char *format, ...)
 {
   va_list ap;
   unsigned char *sav, *p = *pp;
@@ -1201,8 +1211,26 @@ static int add_resource_record(struct dns_header *header, char *limit, int *trun
 
   if (truncp && *truncp)
     return 0;
+ 
+  va_start(ap, format);   /* make ap point to 1st unamed argument */
+  
+  if (nameoffset > 0)
+    {
+      PUTSHORT(nameoffset | 0xc000, p);
+    }
+  else
+    {
+      char *name = va_arg(ap, char *);
+      if (name)
+	p = do_rfc1035_name(p, name);
+      if (nameoffset < 0)
+	{
+	  PUTSHORT(-nameoffset | 0xc000, p);
+	}
+      else
+	*p++ = 0;
+    }
 
-  PUTSHORT(nameoffset | 0xc000, p);
   PUTSHORT(type, p);
   PUTSHORT(class, p);
   PUTLONG(ttl, p);      /* TTL */
@@ -1210,8 +1238,6 @@ static int add_resource_record(struct dns_header *header, char *limit, int *trun
   sav = p;              /* Save pointer to RDLength field */
   PUTSHORT(0, p);       /* Placeholder RDLength */
 
-  va_start(ap, format);   /* make ap point to 1st unamed argument */
-  
   for (; *format; format++)
     switch (*format)
       {
@@ -1307,7 +1333,7 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
   unsigned char *p, *ansp, *pheader;
   int qtype, qclass;
   struct all_addr addr;
-  unsigned int nameoffset;
+  int nameoffset;
   unsigned short flag;
   int q, ans, anscount = 0, addncount = 0;
   int dryrun = 0, sec_reqd = 0;
@@ -1424,19 +1450,42 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
 	      if (is_arpa == F_IPV4)
 		for (intr = daemon->int_names; intr; intr = intr->next)
 		  {
-		    if (addr.addr.addr4.s_addr == get_ifaddr(intr->intr).s_addr)
+		    struct addrlist *addrlist;
+		    
+		    for (addrlist = intr->addr4; addrlist; addrlist = addrlist->next)
+		      if (addr.addr.addr4.s_addr == addrlist->addr.addr.addr4.s_addr)
+			break;
+		    
+		    if (addrlist)
 		      break;
 		    else
 		      while (intr->next && strcmp(intr->intr, intr->next->intr) == 0)
 			intr = intr->next;
 		  }
+#ifdef HAVE_IPV6
+	      else if (is_arpa == F_IPV6)
+		for (intr = daemon->int_names; intr; intr = intr->next)
+		  {
+		    struct addrlist *addrlist;
+		    
+		    for (addrlist = intr->addr6; addrlist; addrlist = addrlist->next)
+		      if (IN6_ARE_ADDR_EQUAL(&addr.addr.addr6, &addrlist->addr.addr.addr6))
+			break;
+		    
+		    if (addrlist)
+		      break;
+		    else
+		      while (intr->next && strcmp(intr->intr, intr->next->intr) == 0)
+			intr = intr->next;
+		  }
+#endif
 	      
 	      if (intr)
 		{
 		  ans = 1;
 		  if (!dryrun)
 		    {
-		      log_query(F_IPV4 | F_REVERSE | F_CONFIG, intr->name, &addr, NULL);
+		      log_query(is_arpa | F_REVERSE | F_CONFIG, intr->name, &addr, NULL);
 		      if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
 					      daemon->local_ttl, NULL,
 					      T_PTR, C_IN, "d", intr->name))
@@ -1491,6 +1540,19 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
 			  }
 		      }
 		  } while ((crecp = cache_find_by_addr(crecp, &addr, now, is_arpa)));
+	      else if (is_rev_synth(is_arpa, &addr, name))
+		{
+		  ans = 1;
+		  if (!dryrun)
+		    {
+		      log_query(F_CONFIG | F_REVERSE | is_arpa, name, &addr, NULL); 
+		      
+		      if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+					      daemon->local_ttl, NULL,
+					      T_PTR, C_IN, "d", name))
+			      anscount++;
+		    }
+		}
 	      else if (is_arpa == F_IPV4 && 
 		       option_bool(OPT_BOGUSPRIV) && 
 		       private_net(addr.addr.addr4, 1))
@@ -1507,7 +1569,8 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
 	  for (flag = F_IPV4; flag; flag = (flag == F_IPV4) ? F_IPV6 : 0)
 	    {
 	      unsigned short type = T_A;
-	      
+	      struct interface_name *intr;
+
 	      if (flag == F_IPV6)
 #ifdef HAVE_IPV6
 		type = T_AAAA;
@@ -1556,31 +1619,38 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
 		}
 
 	      /* interface name stuff */
-	      if (qtype == T_A)
+	      
+	      for (intr = daemon->int_names; intr; intr = intr->next)
+		if (hostname_isequal(name, intr->name))
+		  break;
+	      
+	      if (intr)
 		{
-		  struct interface_name *intr;
+		  struct addrlist *addrlist;
 
-		  for (intr = daemon->int_names; intr; intr = intr->next)
-		    if (hostname_isequal(name, intr->name))
-		      break;
+		  enumerate_interfaces(0);
 		  
-		  if (intr)
+		  addrlist = intr->addr4;
+#ifdef HAVE_IPV6
+		  if (type == T_AAAA)
+		    addrlist = intr->addr6;
+#endif		  
+		  ans = 1;
+		  if (!dryrun)
 		    {
-		      ans = 1;
-		      if (!dryrun)
-			{
-			  if ((addr.addr.addr4 = get_ifaddr(intr->intr)).s_addr == (in_addr_t) -1)
-			    log_query(F_FORWARD | F_CONFIG | F_IPV4 | F_NEG, name, NULL, NULL);
-			  else
-			    {
-			      log_query(F_FORWARD | F_CONFIG | F_IPV4, name, &addr, NULL);
-			      if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
-						      daemon->local_ttl, NULL, type, C_IN, "4", &addr))
-				anscount++;
-			    }
-			}
-		      continue;
+		      if (!addrlist)
+			log_query(F_FORWARD | F_CONFIG | flag | F_NEG, name, NULL, NULL);
+		      else 
+			for (; addrlist; addrlist = addrlist->next)
+			  {
+			    log_query(F_FORWARD | F_CONFIG | flag, name, &addrlist->addr, NULL);
+			    if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+						    daemon->local_ttl, NULL, type, C_IN, 
+						    type == T_A ? "4" : "6", &addrlist->addr))
+			      anscount++;
+			  }
 		    }
+		  continue;
 		}
 
 	    cname_restart:
@@ -1661,6 +1731,17 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
 			}
 		    } while ((crecp = cache_find_by_name(crecp, name, now, flag | F_CNAME)));
 		}
+	      else if (is_name_synthetic(flag, name, &addr))
+		{
+		  ans = 1;
+		  if (!dryrun)
+		    {
+		      log_query(F_FORWARD | F_CONFIG | flag, name, &addr, NULL);
+		      if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, 
+					      daemon->local_ttl, NULL, type, C_IN, type == T_A ? "4" : "6", &addr))
+			anscount++;
+		    }
+		}
 	    }
 
 	  if (qtype == T_CNAME || qtype == T_ANY)
@@ -1689,7 +1770,7 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
 		  ans = found = 1;
 		  if (!dryrun)
 		    {
-		      unsigned int offset;
+		      int offset;
 		      log_query(F_CONFIG | F_RRNAME, name, NULL, "<MX>");
 		      if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, daemon->local_ttl,
 					      &offset, T_MX, C_IN, "sd", rec->weight, rec->target))
@@ -1727,7 +1808,7 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
 		    found = ans = 1;
 		    if (!dryrun)
 		      {
-			unsigned int offset;
+			int offset;
 			log_query(F_CONFIG | F_RRNAME, name, NULL, "<SRV>");
 			if (add_resource_record(header, limit, &trunc, nameoffset, &ansp, daemon->local_ttl, 
 						&offset, T_SRV, C_IN, "sssd", 
@@ -1857,7 +1938,3 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
   return ansp - (unsigned char *)header;
 }
 
-
-
-
-

src/rfc2131.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -39,6 +39,7 @@ static unsigned char *option_find(struct dhcp_packet *mess, size_t size, int opt
 static unsigned char *option_find1(unsigned char *p, unsigned char *end, int opt, int minsize);
 static size_t dhcp_packet_size(struct dhcp_packet *mess, unsigned char *agent_id, unsigned char *real_end);
 static void clear_packet(struct dhcp_packet *mess, unsigned char *end);
+static int in_list(unsigned char *list, int opt);
 static void do_options(struct dhcp_context *context,
 		       struct dhcp_packet *mess,
 		       unsigned char *real_end, 
@@ -354,6 +355,117 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
 		      ntohl(mess->xid), daemon->namebuff, inet_ntoa(context_tmp->end));
 	}
     }
+  
+  /* dhcp-match. If we have hex-and-wildcards, look for a left-anchored match.
+     Otherwise assume the option is an array, and look for a matching element. 
+     If no data given, existance of the option is enough. This code handles 
+     rfc3925 V-I classes too. */
+  for (o = daemon->dhcp_match; o; o = o->next)
+    {
+      unsigned int len, elen, match = 0;
+      size_t offset, o2;
+
+      if (o->flags & DHOPT_RFC3925)
+	{
+	  if (!(opt = option_find(mess, sz, OPTION_VENDOR_IDENT, 5)))
+	    continue;
+	  
+	  for (offset = 0; offset < (option_len(opt) - 5u); offset += len + 5)
+	    {
+	      len = option_uint(opt, offset + 4 , 1);
+	      /* Need to take care that bad data can't run us off the end of the packet */
+	      if ((offset + len + 5 <= (option_len(opt))) &&
+		  (option_uint(opt, offset, 4) == (unsigned int)o->u.encap))
+		for (o2 = offset + 5; o2 < offset + len + 5; o2 += elen + 1)
+		  { 
+		    elen = option_uint(opt, o2, 1);
+		    if ((o2 + elen + 1 <= option_len(opt)) &&
+			(match = match_bytes(o, option_ptr(opt, o2 + 1), elen)))
+		      break;
+		  }
+	      if (match) 
+		break;
+	    }	  
+	}
+      else
+	{
+	  if (!(opt = option_find(mess, sz, o->opt, 1)))
+	    continue;
+	  
+	  match = match_bytes(o, option_ptr(opt, 0), option_len(opt));
+	} 
+
+      if (match)
+	{
+	  o->netid->next = netid;
+	  netid = o->netid;
+	}
+    }
+	
+  /* user-class options are, according to RFC3004, supposed to contain
+     a set of counted strings. Here we check that this is so (by seeing
+     if the counts are consistent with the overall option length) and if
+     so zero the counts so that we don't get spurious matches between 
+     the vendor string and the counts. If the lengths don't add up, we
+     assume that the option is a single string and non RFC3004 compliant 
+     and just do the substring match. dhclient provides these broken options.
+     The code, later, which sends user-class data to the lease-change script
+     relies on the transformation done here.
+  */
+
+  if ((opt = option_find(mess, sz, OPTION_USER_CLASS, 1)))
+    {
+      unsigned char *ucp = option_ptr(opt, 0);
+      int tmp, j;
+      for (j = 0; j < option_len(opt); j += ucp[j] + 1);
+      if (j == option_len(opt))
+	for (j = 0; j < option_len(opt); j = tmp)
+	  {
+	    tmp = j + ucp[j] + 1;
+	    ucp[j] = 0;
+	  }
+    }
+    
+  for (vendor = daemon->dhcp_vendors; vendor; vendor = vendor->next)
+    {
+      int mopt;
+      
+      if (vendor->match_type == MATCH_VENDOR)
+	mopt = OPTION_VENDOR_ID;
+      else if (vendor->match_type == MATCH_USER)
+	mopt = OPTION_USER_CLASS; 
+      else
+	continue;
+
+      if ((opt = option_find(mess, sz, mopt, 1)))
+	{
+	  int i;
+	  for (i = 0; i <= (option_len(opt) - vendor->len); i++)
+	    if (memcmp(vendor->data, option_ptr(opt, i), vendor->len) == 0)
+	      {
+		vendor->netid.next = netid;
+		netid = &vendor->netid;
+		break;
+	      }
+	}
+    }
+
+  /* mark vendor-encapsulated options which match the client-supplied vendor class,
+     save client-supplied vendor class */
+  if ((opt = option_find(mess, sz, OPTION_VENDOR_ID, 1)))
+    {
+      memcpy(daemon->dhcp_buff3, option_ptr(opt, 0), option_len(opt));
+      vendor_class_len = option_len(opt);
+    }
+  match_vendor_opts(opt, daemon->dhcp_opts);
+  
+  if (option_bool(OPT_LOG_OPTS))
+    {
+      if (sanitise(opt, daemon->namebuff))
+	my_syslog(MS_DHCP | LOG_INFO, _("%u vendor class: %s"), ntohl(mess->xid), daemon->namebuff);
+      if (sanitise(option_find(mess, sz, OPTION_USER_CLASS, 1), daemon->namebuff))
+	my_syslog(MS_DHCP | LOG_INFO, _("%u user class: %s"), ntohl(mess->xid), daemon->namebuff);
+    }
 
   mess->op = BOOTREPLY;
   
@@ -493,9 +605,8 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
 	      lease_set_interface(lease, int_index, now);
 	      
 	      clear_packet(mess, end);
-	      match_vendor_opts(NULL, daemon->dhcp_opts); /* clear flags */
 	      do_options(context, mess, end, NULL, hostname, get_domain(mess->yiaddr), 
-			 netid, subnet_addr, 0, 0, -1, NULL, 0, now);
+			 netid, subnet_addr, 0, 0, -1, NULL, vendor_class_len, now);
 	    }
 	}
       
@@ -622,119 +733,8 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
 	}
     }
   
-  /* dhcp-match. If we have hex-and-wildcards, look for a left-anchored match.
-     Otherwise assume the option is an array, and look for a matching element. 
-     If no data given, existance of the option is enough. This code handles 
-     rfc3925 V-I classes too. */
-  for (o = daemon->dhcp_match; o; o = o->next)
-    {
-      unsigned int len, elen, match = 0;
-      size_t offset, o2;
-
-      if (o->flags & DHOPT_RFC3925)
-	{
-	  if (!(opt = option_find(mess, sz, OPTION_VENDOR_IDENT, 5)))
-	    continue;
-	  
-	  for (offset = 0; offset < (option_len(opt) - 5u); offset += len + 5)
-	    {
-	      len = option_uint(opt, offset + 4 , 1);
-	      /* Need to take care that bad data can't run us off the end of the packet */
-	      if ((offset + len + 5 <= (option_len(opt))) &&
-		  (option_uint(opt, offset, 4) == (unsigned int)o->u.encap))
-		for (o2 = offset + 5; o2 < offset + len + 5; o2 += elen + 1)
-		  { 
-		    elen = option_uint(opt, o2, 1);
-		    if ((o2 + elen + 1 <= option_len(opt)) &&
-			(match = match_bytes(o, option_ptr(opt, o2 + 1), elen)))
-		      break;
-		  }
-	      if (match) 
-		break;
-	    }	  
-	}
-      else
-	{
-	  if (!(opt = option_find(mess, sz, o->opt, 1)))
-	    continue;
-	  
-	  match = match_bytes(o, option_ptr(opt, 0), option_len(opt));
-	} 
-
-      if (match)
-	{
-	  o->netid->next = netid;
-	  netid = o->netid;
-	}
-    }
-	
-  /* user-class options are, according to RFC3004, supposed to contain
-     a set of counted strings. Here we check that this is so (by seeing
-     if the counts are consistent with the overall option length) and if
-     so zero the counts so that we don't get spurious matches between 
-     the vendor string and the counts. If the lengths don't add up, we
-     assume that the option is a single string and non RFC3004 compliant 
-     and just do the substring match. dhclient provides these broken options.
-     The code, later, which sends user-class data to the lease-change script
-     relies on the transformation done here.
-  */
-
-  if ((opt = option_find(mess, sz, OPTION_USER_CLASS, 1)))
-    {
-      unsigned char *ucp = option_ptr(opt, 0);
-      int tmp, j;
-      for (j = 0; j < option_len(opt); j += ucp[j] + 1);
-      if (j == option_len(opt))
-	for (j = 0; j < option_len(opt); j = tmp)
-	  {
-	    tmp = j + ucp[j] + 1;
-	    ucp[j] = 0;
-	  }
-    }
-    
-  for (vendor = daemon->dhcp_vendors; vendor; vendor = vendor->next)
-    {
-      int mopt;
-      
-      if (vendor->match_type == MATCH_VENDOR)
-	mopt = OPTION_VENDOR_ID;
-      else if (vendor->match_type == MATCH_USER)
-	mopt = OPTION_USER_CLASS; 
-      else
-	continue;
-
-      if ((opt = option_find(mess, sz, mopt, 1)))
-	{
-	  int i;
-	  for (i = 0; i <= (option_len(opt) - vendor->len); i++)
-	    if (memcmp(vendor->data, option_ptr(opt, i), vendor->len) == 0)
-	      {
-		vendor->netid.next = netid;
-		netid = &vendor->netid;
-		break;
-	      }
-	}
-    }
-
-  /* mark vendor-encapsulated options which match the client-supplied vendor class,
-     save client-supplied vendor class */
-  if ((opt = option_find(mess, sz, OPTION_VENDOR_ID, 1)))
-    {
-      memcpy(daemon->dhcp_buff3, option_ptr(opt, 0), option_len(opt));
-      vendor_class_len = option_len(opt);
-    }
-  match_vendor_opts(opt, daemon->dhcp_opts);
-  
-  if (option_bool(OPT_LOG_OPTS))
-    {
-      if (sanitise(opt, daemon->namebuff))
-	my_syslog(MS_DHCP | LOG_INFO, _("%u vendor class: %s"), ntohl(mess->xid), daemon->namebuff);
-      if (sanitise(option_find(mess, sz, OPTION_USER_CLASS, 1), daemon->namebuff))
-	my_syslog(MS_DHCP | LOG_INFO, _("%u user class: %s"), ntohl(mess->xid), daemon->namebuff);
-    }
-
   tagif_netid = run_tag_if(netid);
-
+  
   /* if all the netids in the ignore list are present, ignore this client */
   for (id_list = daemon->dhcp_ignore; id_list; id_list = id_list->next)
     if (match_netid(id_list->list, tagif_netid, 0))
@@ -1072,7 +1072,7 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
 			 Have to set override to make sure we echo back the correct server-id */
 		      struct irec *intr;
 		      
-		      enumerate_interfaces();
+		      enumerate_interfaces(0);
 
 		      for (intr = daemon->interfaces; intr; intr = intr->next)
 			if (intr->addr.sa.sa_family == AF_INET &&
@@ -1256,7 +1256,20 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
 		  add_extradata_opt(lease, oui);
 		  add_extradata_opt(lease, serial);
 		  add_extradata_opt(lease, class);
-		  
+
+		  if ((opt = option_find(mess, sz, OPTION_AGENT_ID, 1)))
+		    {
+		      add_extradata_opt(lease, option_find1(option_ptr(opt, 0), option_ptr(opt, option_len(opt)), SUBOPT_CIRCUIT_ID, 1));
+		      add_extradata_opt(lease, option_find1(option_ptr(opt, 0), option_ptr(opt, option_len(opt)), SUBOPT_SUBSCR_ID, 1));
+		      add_extradata_opt(lease, option_find1(option_ptr(opt, 0), option_ptr(opt, option_len(opt)), SUBOPT_REMOTE_ID, 1));
+		    }
+		  else
+		    {
+		      add_extradata_opt(lease, NULL);
+		      add_extradata_opt(lease, NULL);
+		      add_extradata_opt(lease, NULL);
+		    }
+
 		  /* space-concat tag set */
 		  if (!tagif_netid)
 		    add_extradata_opt(lease, NULL);
@@ -1397,7 +1410,21 @@ size_t dhcp_reply(struct dhcp_context *context, char *iface_name, int int_index,
       clear_packet(mess, end);
       option_put(mess, end, OPTION_MESSAGE_TYPE, 1, DHCPACK);
       option_put(mess, end, OPTION_SERVER_IDENTIFIER, INADDRSZ, ntohl(server_id(context, override, fallback).s_addr));
-      
+     
+      /* RFC 2131 says that DHCPINFORM shouldn't include lease-time parameters, but 
+	 we supply a utility which makes DHCPINFORM requests to get this information.
+	 Only include lease time if OPTION_LEASE_TIME is in the parameter request list,
+	 which won't be true for ordinary clients, but will be true for the 
+	 dhcp_lease_time utility. */
+      if (lease && in_list(req_options, OPTION_LEASE_TIME))
+	{
+	  if (lease->expires == 0)
+	    time = 0xffffffff;
+	  else
+	    time = (unsigned int)difftime(lease->expires, now);
+	  option_put(mess, end, OPTION_LEASE_TIME, 4, time);
+	}
+
       do_options(context, mess, end, req_options, hostname, get_domain(mess->ciaddr),
 		 netid, subnet_addr, fqdn_flags, borken_opt, pxearch, uuid, vendor_class_len, now);
       
@@ -1739,7 +1766,7 @@ static unsigned char *free_space(struct dhcp_packet *mess, unsigned char *end, i
 	      if (overload[2] & 2)
 		{
 		  p = dhcp_skip_opts(mess->sname);
-		  if (p + len + 3 >= mess->sname + sizeof(mess->file))
+		  if (p + len + 3 >= mess->sname + sizeof(mess->sname))
 		    p = NULL;
 		}
 	    }
@@ -2234,7 +2261,8 @@ static void do_options(struct dhcp_context *context,
 	  !option_find2(OPTION_ROUTER))
 	option_put(mess, end, OPTION_ROUTER, INADDRSZ, ntohl(context->router.s_addr));
       
-      if (in_list(req_options, OPTION_DNSSERVER) &&
+      if (daemon->port == NAMESERVER_PORT &&
+	  in_list(req_options, OPTION_DNSSERVER) &&
 	  !option_find2(OPTION_DNSSERVER))
 	option_put(mess, end, OPTION_DNSSERVER, INADDRSZ, ntohl(context->local.s_addr));
     }

src/slaac.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -20,7 +20,6 @@
 
 #include <netinet/icmp6.h>
 
-static int map_rebuild = 0;
 static int ping_id = 0;
 
 void slaac_add_addrs(struct dhcp_lease *lease, time_t now, int force)
@@ -38,7 +37,7 @@ void slaac_add_addrs(struct dhcp_lease *lease, time_t now, int force)
   old = lease->slaac_address;
   lease->slaac_address = NULL;
 
-  for (context = daemon->ra_contexts; context; context = context->next) 
+  for (context = daemon->dhcp6; context; context = context->next) 
     if ((context->flags & CONTEXT_RA_NAME) && lease->last_interface == context->if_index)
       {
 	struct in6_addr addr = context->start6;
@@ -123,7 +122,7 @@ time_t periodic_slaac(time_t now, struct dhcp_lease *leases)
   struct slaac_address *slaac;
   time_t next_event = 0;
   
-  for (context = daemon->ra_contexts; context; context = context->next)
+  for (context = daemon->dhcp6; context; context = context->next)
     if ((context->flags & CONTEXT_RA_NAME))
       break;
 
@@ -134,12 +133,6 @@ time_t periodic_slaac(time_t now, struct dhcp_lease *leases)
   while (ping_id == 0)
     ping_id = rand16();
 
-  if (map_rebuild)
-    {
-      map_rebuild = 0;
-      build_subnet_map();
-    }
-
   for (lease = leases; lease; lease = lease->next)
     for (slaac = lease->slaac_address; slaac; slaac = slaac->next)
       {
@@ -211,51 +204,4 @@ void slaac_ping_reply(struct in6_addr *sender, unsigned char *packet, char *inte
   lease_update_dns(gotone);
 }
 	
-/* Build a map from ra-names subnets to corresponding interfaces. This
-   is used to go from DHCPv4 leases to SLAAC addresses, 
-   interface->IPv6-subnet, IPv6-subnet + MAC address -> SLAAC.
-*/	      
-static int add_subnet(struct in6_addr *local,  int prefix,
-		      int scope, int if_index, int dad, void *vparam)
-{ 
-  struct dhcp_context *context;
- 
-  (void)scope;
-  (void)dad;
-  (void)vparam;
-
-  for (context = daemon->ra_contexts; context; context = context->next)
-    if ((context->flags & CONTEXT_RA_NAME) &&
-	prefix == context->prefix &&
-	is_same_net6(local, &context->start6, prefix) &&
-	is_same_net6(local, &context->end6, prefix))
-      {
-	context->if_index = if_index;
-	context->local6 = *local;
-      }
-
-  return 1;
-}
-
-void build_subnet_map(void)
-{
-  struct dhcp_context *context;
-  int ok = 0;
-
-  for (context = daemon->ra_contexts; context; context = context->next)
-    {
-      context->if_index = 0;
-      if ((context->flags & CONTEXT_RA_NAME))
-	ok = 1;
-    }
-
-  /* ra-names configured */
-  if (ok)
-    iface_enumerate(AF_INET6, NULL, add_subnet);
-}
-
-void schedule_subnet_map(void)
-{
-  map_rebuild = 1; 
-}
 #endif

src/tftp.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -61,6 +61,7 @@ void tftp_request(struct listener *listen, time_t now)
   char *name = NULL;
   char *prefix = daemon->tftp_prefix;
   struct tftp_prefix *pref;
+  struct all_addr addra;
 
   union {
     struct cmsghdr align; /* this ensures alignment */
@@ -189,22 +190,27 @@ void tftp_request(struct listener *listen, time_t now)
 	return;
 
       name = namebuff;
+      
+      addra.addr.addr4 = addr.in.sin_addr;
 
 #ifdef HAVE_IPV6
       if (listen->family == AF_INET6)
+	addra.addr.addr6 = addr.in6.sin6_addr;
+#endif
+
+      if (!iface_check(listen->family, &addra, name, NULL))
 	{
-	  if (!iface_check(AF_INET6, (struct all_addr *)&addr.in6.sin6_addr, name))
+	  if (!option_bool(OPT_CLEVERBIND))
+	    enumerate_interfaces(0); 
+	  if (!loopback_exception(listen->tftpfd, listen->family, &addra, name) &&
+	      !label_exception(if_index, listen->family, &addra) )
 	    return;
 	}
-      else
-#endif
-        if (!iface_check(AF_INET, (struct all_addr *)&addr.in.sin_addr, name))
-	  return;
-
+      
 #ifdef HAVE_DHCP      
       /* allowed interfaces are the same as for DHCP */
       for (tmp = daemon->dhcp_except; tmp; tmp = tmp->next)
-	if (tmp->name && (strcmp(tmp->name, name) == 0))
+	if (tmp->name && wildcard_match(tmp->name, name))
 	  return;
 #endif
       

src/util.c

@@ -1,4 +1,4 @@
-/* dnsmasq is Copyright (c) 2000-2012 Simon Kelley
+/* dnsmasq is Copyright (c) 2000-2013 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
@@ -142,19 +142,23 @@ static int check_name(char *in)
 int legal_hostname(char *name)
 {
   char c;
+  int first;
 
   if (!check_name(name))
     return 0;
 
-  for (; (c = *name); name++)
+  for (first = 1; (c = *name); name++, first = 0)
     /* check for legal char a-z A-Z 0-9 - _ . */
     {
       if ((c >= 'A' && c <= 'Z') ||
-	  (c >= 'a' && c <= 'z') ||
-	  (c >= '0' && c <= '9') ||
-	  c == '-' || c == '_')
+	  (c >= 'a' && c <= 'z'))
 	continue;
-      
+
+      if (!first && 
+	  ((c >= '0' && c <= '9') ||
+	   c == '-' || c == '_'))
+	continue;
+
       /* end of hostname part */
       if (c == '.')
 	return 1;
@@ -581,3 +585,20 @@ int read_write(int fd, unsigned char *packet, int size, int rw)
   return 1;
 }
 
+/* Basically match a string value against a wildcard pattern.  */
+int wildcard_match(const char* wildcard, const char* match)
+{
+  while (*wildcard && *match)
+    {
+      if (*wildcard == '*')
+        return 1;
+
+      if (*wildcard != *match)
+        return 0; 
+
+      ++wildcard;
+      ++match;
+    }
+
+  return *wildcard == *match;
+}