1 files changed, 387 insertions, 0 deletions
diff --git a/files/etc/init.d/dnsmasq b/files/etc/init.d/dnsmasq
new file mode 100755
index 0000000..ccf70f0
--- /dev/null
+++ b/files/etc/init.d/dnsmasq
@@ -0,0 +1,387 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2007 OpenWrt.org
+
+START=60
+DNS_SERVERS=""
+DOMAIN=""
+
+dhcp_calc() {
+	local ip="$1"
+	local res=0
+
+	while [ -n "$ip" ]; do
+		part="${ip%%.*}"
+		res="$(($res * 256))"
+		res="$(($res + $part))"
+		[ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
+	done
+	echo "$res"
+}
+
+append_bool() {
+	local section="$1"
+	local option="$2"
+	local value="$3"
+	local _loctmp
+	config_get_bool _loctmp "$section" "$option" 0
+	[ $_loctmp -gt 0 ] && append args "$value"
+}
+
+append_parm() {
+	local section="$1"
+	local option="$2"
+	local switch="$3"
+	local _loctmp
+	config_get _loctmp "$section" "$option"
+	[ -z "$_loctmp" ] && return 0
+	append args "$switch $_loctmp"
+}
+
+append_server() {
+	append args "-S $1"
+}
+
+append_interface() {
+	local ifname=$(uci_get_state network "$1" ifname "$1")
+	append args "-i $ifname"
+}
+
+append_notinterface() {
+	local ifname=$(uci_get_state network "$1" ifname "$1")
+	append args "-I $ifname"
+}
+
+append_addnhosts() {
+	append args "-H $1"
+}
+
+append_bogusnxdomain() {
+       append args "-B $1"
+}
+
+dnsmasq() {
+	local cfg="$1"
+	append_bool "$cfg" authoritative "-K"
+	append_bool "$cfg" nodaemon "-d"
+	append_bool "$cfg" domainneeded "-D"
+	append_bool "$cfg" filterwin2k "-f"
+	append_bool "$cfg" nohosts "-h"
+	append_bool "$cfg" nonegcache "-N"
+	append_bool "$cfg" strictorder "-o"
+	append_bool "$cfg" logqueries "-q"
+	append_bool "$cfg" noresolv "-R"
+	append_bool "$cfg" localise_queries "-y"
+	append_bool "$cfg" readethers "-Z"
+	append_bool "$cfg" dbus "-1"
+	append_bool "$cfg" boguspriv "-b"
+	append_bool "$cfg" expandhosts "-E"
+	append_bool "$cfg" enable_tftp "--enable-tftp"
+	append_bool "$cfg" nonwildcard "-z"
+
+	append_parm "$cfg" cachesize "-c"
+	append_parm "$cfg" dnsforwardmax "-0"
+	append_parm "$cfg" port "-p"
+	append_parm "$cfg" ednspacket_max "-P"
+	append_parm "$cfg" dhcpleasemax "-X"
+	append_parm "$cfg" "queryport" "-Q"
+	append_parm "$cfg" "domain" "-s"
+	append_parm "$cfg" "local" "-S"
+	config_list_foreach "$cfg" "server" append_server
+	config_list_foreach "$cfg" "interface" append_interface
+	config_list_foreach "$cfg" "notinterface" append_notinterface
+	config_list_foreach "$cfg" "addnhosts" append_addnhosts
+	config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain
+	append_parm "$cfg" "leasefile" "-l"
+	append_parm "$cfg" "resolvfile" "-r"
+	append_parm "$cfg" "tftp_root" "--tftp-root"
+	append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
+
+	config_get DOMAIN "$cfg" domain
+
+	config_get_bool readethers "$cfg" readethers
+	[ "$readethers" = "1" ] && [ -e "/etc/ethers" ] || touch /etc/ethers
+
+	config_get leasefile $cfg leasefile
+	[ -n "$leasefile" ] && [ -e "$leasefile" ] || touch "$leasefile"
+	config_get_bool cachelocal "$cfg" cachelocal 1
+
+	config_get hostsfile "$cfg" dhcphostsfile
+	[ -e "$hostsfile" ] && append args "--dhcp-hostsfile=$hostsfile"
+
+	local rebind
+	config_get_bool rebind "$cfg" rebind_protection 1
+	[ $rebind -gt 0 ] && {
+		logger -t dnsmasq \
+			"DNS rebinding protection is active," \
+			"will discard upstream RFC1918 responses!"
+		append args "--stop-dns-rebind"
+
+		local rebind_localhost
+		config_get_bool rebind_localhost "$cfg" rebind_localhost 0
+		[ $rebind_localhost -gt 0 ] && {
+			logger -t dnsmasq "Allowing 127.0.0.0/8 responses"
+			append args "--rebind-localhost-ok"
+		}
+
+		append_rebind_domain() {
+			logger -t dnsmasq "Allowing RFC1918 responses for domain $1"
+			append args "--rebind-domain-ok=$1"
+		}
+
+		config_list_foreach "$cfg" rebind_domain append_rebind_domain
+	}
+}
+
+dhcp_subscrid_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get subscriberid "$cfg" subscriberid
+	[ -n "$subscriberid" ] || return 0
+
+	append args "--dhcp-subscrid=$networkid,$subscriberid"
+
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+dhcp_remoteid_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get remoteid "$cfg" remoteid
+	[ -n "$remoteid" ] || return 0
+
+	append args "--dhcp-remoteid=$networkid,$remoteid"
+
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+dhcp_circuitid_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get circuitid "$cfg" circuitid
+	[ -n "$circuitid" ] || return 0
+
+	append args "--dhcp-circuitid=$networkid,$circuitid"
+
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+dhcp_userclass_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get userclass "$cfg" userclass
+	[ -n "$userclass" ] || return 0
+
+	append args "--dhcp-userclass=$networkid,$userclass"
+
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+dhcp_vendorclass_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get vendorclass "$cfg" vendorclass
+	[ -n "$vendorclass" ] || return 0
+
+	append args "--dhcp-vendorclass=$networkid,$vendorclass"
+
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+dhcp_host_add() {
+	local cfg="$1"
+
+	config_get name "$cfg" name
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid"
+
+	config_get ip "$cfg" ip
+	[ -n "$ip" ] || return 0
+
+	macs=""
+	config_get mac "$cfg" mac
+	for m in $mac; do append macs "$m" ","; done
+	[ -n "$macs" ] || return 0
+
+	append args "--dhcp-host=$macs,${networkid:+net:$networkid,}$ip${name:+,$name}"
+}
+
+dhcp_mac_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || return 0
+
+	config_get mac "$cfg" mac
+	[ -n "$mac" ] || return 0
+
+	append args "--dhcp-mac=$networkid,$mac"
+
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+dhcp_boot_add() {
+	local cfg="$1"
+
+	config_get networkid "$cfg" networkid
+
+	config_get filename "$cfg" filename
+	[ -n "$filename" ] || return 0
+
+	config_get servername "$cfg" servername
+	[ -n "$servername" ] || return 0
+
+	config_get serveraddress "$cfg" serveraddress
+	[ -n "$serveraddress" ] || return 0
+
+	append args "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress"
+
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+
+dhcp_add() {
+	local cfg="$1"
+	config_get net "$cfg" interface
+	[ -n "$net" ] || return 0
+
+	config_get networkid "$cfg" networkid
+	[ -n "$networkid" ] || networkid="$net"
+
+	config_get ifname "$net" ifname
+	[ -n "$ifname" ] || return 0
+
+	config_get dnsserver "$net" dns
+	[ "$cachelocal" = "0" -a -n "$dnsserver" ] && {
+		DNS_SERVERS="$DNS_SERVERS $dnsserver"
+	}
+
+	append_bool "$cfg" ignore "-2 $ifname" && return 0
+
+	config_get proto "$net" proto
+	[ static = "$proto" ] || return 0
+
+	config_get ipaddr "$net" ipaddr
+	config_get netmask "$cfg" netmask
+	[ -n "$netmask" ] || config_get netmask "$net" netmask
+
+	#check for an already active dhcp server on the interface, unless 'force' is set
+	config_get_bool force "$cfg" force 0
+	[ $force -gt 0 ] || {
+		udhcpc -n -q -s /bin/true -t 1 -i $ifname >&- && {
+			logger -t dnsmasq \
+				"found already running DHCP-server on interface '$ifname'" \
+				"refusing to start, use 'option force 1' to override"
+			return 0
+		}
+	}
+
+	config_get start "$cfg" start
+	config_get limit "$cfg" limit
+	config_get start_ip "$cfg" start_ip
+	config_get end_ip "$cfg" end_ip
+	config_get leasetime "$cfg" leasetime
+	config_get options "$cfg" options
+	config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
+
+	leasetime="${leasetime:-12h}"
+	start="$(dhcp_calc "${start:-100}")"
+	limit="${limit:-150}"
+	eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
+	if [ "$dynamicdhcp" = "0" ]; then END="static"; fi
+	if [ -n "$start_ip" ]; then START=$start_ip; fi
+	if [ -n "$end_ip" ]; then END=$end_ip; fi
+	append args "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
+	dhcp_option_add "$cfg" "$networkid"
+}
+
+dhcp_option_add() {
+	local cfg="$1"
+	local networkid="$2"
+
+	config_get dhcp_option "$cfg" dhcp_option
+	for o in $dhcp_option; do
+		append args "-O $networkid","$o"
+	done
+
+}
+
+dhcp_domain_add() {
+	local cfg="$1"
+	local ip name names
+
+	config_get names "$cfg" name
+	[ -n "$names" ] || return 0
+
+	config_get ip "$cfg" ip
+	[ -n "$ip" ] || return 0
+
+	local oIFS="$IFS"; IFS="."; set -- $ip; IFS="$oIFS"
+	local raddr="${4:+$4.$3.$2.$1.in-addr.arpa}"
+
+	for name in $names; do
+		local fqdn="$name"
+
+		[ "${fqdn%.*}" == "$fqdn" ] && \
+			fqdn="$fqdn${DOMAIN:+.$DOMAIN}"
+
+		append args "-A /$fqdn/$ip"
+		
+		[ -n "$raddr" ] && {
+			append args "--ptr-record=$raddr,$fqdn"
+			raddr=""
+		}
+	done
+}
+
+start() {
+	include /lib/network
+	scan_interfaces
+	config_load dhcp
+
+	args=""
+	config_foreach dnsmasq dnsmasq
+	config_foreach dhcp_host_add host
+	config_foreach dhcp_boot_add boot
+	config_foreach dhcp_mac_add mac
+	config_foreach dhcp_vendorclass_add vendorclass
+	config_foreach dhcp_userclass_add userclass
+	config_foreach dhcp_circuitid_add circuitid
+	config_foreach dhcp_remoteid_add remoteid
+	config_foreach dhcp_subscrid_add subscrid
+	config_foreach dhcp_domain_add domain
+	config_foreach dhcp_add dhcp
+	echo $args
+	/usr/sbin/dnsmasq $args && {
+		rm -f /tmp/resolv.conf
+		[ -n "$DOMAIN" ] && echo "search $DOMAIN" >> /tmp/resolv.conf
+		DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
+		for DNS_SERVER in $DNS_SERVERS ; do
+			echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
+		done
+	}
+}
+
+stop() {
+	[ -f /tmp/resolv.conf ] && {
+		rm -f /tmp/resolv.conf
+		ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
+	}
+	killall dnsmasq
+	return 0
+}