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dnsmasq: add mx record support
[openwrt.git] / package / dnsmasq / files / dnsmasq.init
diff --git a/package/dnsmasq/files/dnsmasq.init b/package/dnsmasq/files/dnsmasq.init
index 52973d4..edd22ad 100644 (file)
--- a/package/dnsmasq/files/dnsmasq.init
+++ b/package/dnsmasq/files/dnsmasq.init
@@ -1,12 +1,17 @@
 #!/bin/sh /etc/rc.common
 #!/bin/sh /etc/rc.common
-# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2007 OpenWrt.org
 
 START=60
 
 
 START=60
 
+SERVICE_USE_PID=1
+
+DNS_SERVERS=""
+DOMAIN=""
+
 dhcp_calc() {
        local ip="$1"
        local res=0
 dhcp_calc() {
        local ip="$1"
        local res=0
-       
+
        while [ -n "$ip" ]; do
                part="${ip%%.*}"
                res="$(($res * 256))"
        while [ -n "$ip" ]; do
                part="${ip%%.*}"
                res="$(($res * 256))"
@@ -16,61 +21,429 @@ dhcp_calc() {
        echo "$res"
 }
 
        echo "$res"
 }
 
-dhcp_add() {
+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" dhcpscript "-6"
+       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" -a \! -e "/etc/ethers" ] && touch /etc/ethers
+
+       config_get leasefile $cfg leasefile
+       [ -n "$leasefile" -a \! -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="$1"
+
+       config_get networkid "$cfg" networkid
+       [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid"
+
+       config_get name "$cfg" name
+       config_get ip "$cfg" ip
+       [ -n "$ip" ] || [ -n "$name" ] || return 0
+
+       macs=""
+       config_get mac "$cfg" mac
+       for m in $mac; do append macs "$m" ","; done
+       [ -n "$macs" ] || return 0
+
+       append args "--dhcp-host=$macs${networkid:+,net:$networkid}${ip:+,$ip}${name:+,$name}"
+}
+
+dhcp_mac_add() {
        local cfg="$1"
 
        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 "$net" ] || return 0
        config_get net "$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 ifname "$net" ifname
        [ -n "$ifname" ] || return 0
-       
-       config_get_bool ignore "$cfg" ignore
-       [ "$ignore" -gt 0 ] && {
-               append args "-I $ifname"
-               return 0
+
+       config_get dnsserver "$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 = "$proto" ] || return 0
        config_get proto "$net" proto
        [ static = "$proto" ] || return 0
-       
+
        config_get ipaddr "$net" ipaddr
        config_get ipaddr "$net" ipaddr
-       config_get netmask "$net" netmask
+       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
+       #check for an already active dhcp server on the interface, unless 'force' is set
        config_get_bool force "$cfg" force 0
        config_get_bool force "$cfg" force 0
-       [ "$force" -gt 0 ] || {
-               udhcpc -n -q -R -s /bin/true -i $ifname >&- && return 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 "$cfg" start
        config_get start "$cfg" start
-       config_get end "$cfg" end
+       config_get limit "$cfg" limit
        config_get leasetime "$cfg" leasetime
        config_get leasetime "$cfg" leasetime
+       config_get options "$cfg" options
+       config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
 
        leasetime="${leasetime:-12h}"
        start="$(dhcp_calc "${start:-100}")"
 
        leasetime="${leasetime:-12h}"
        start="$(dhcp_calc "${start:-100}")"
-       end="$((${end:-150} + 1))"
-       eval "$(ipcalc.sh $ipaddr $netmask $start $end)"
-       append args "-F $START,$END,$NETMASK,$leasetime"        
+       limit="${limit:-150}"
+       [ "$limit" -gt 0 ] && limit=$((limit-1))
+       eval "$(ipcalc.sh $ipaddr $netmask $start $limit)"
+       if [ "$dynamicdhcp" = "0" ]; then END="static"; 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 "$2"
+       [ -n "$names" ] || return 0
+
+       config_get ip "$cfg" ip "$3"
+       [ -n "$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
+}
+
+dhcp_srv_add() {
+       local cfg="$1"
+
+       config_get srv "$cfg" srv
+       [ -n "$srv" ] || return 0
+
+       config_get target "$cfg" target
+       [ -n "$target" ] || return 0
+
+       config_get port "$cfg" port
+       [ -n "$port" ] || return 0
+
+       config_get class "$cfg" class
+       config_get weight "$cfg" weight
+
+       local service="$srv,$target,$port${class:+,$class${weight:+,$weight}}"
+
+       append args "-W $service"
+}
+
+dhcp_mx_add() {
+       local cfg="$1"
+
+       [ -n "$domain" ] || return 0
+
+       config_get relay "$cfg" relay
+       [ -n "$relay" ] || return 0
+
+       config_get pref "$cfg" pref 0
+
+       local service="$domain,$relay,$pref"
+
+       append args "--mx-host=$service"
+}
+
+dhcp_cname_add() {
+       local cfg="$1"
+       local cname target
+
+       config_get cname "$cfg" cname
+       [ -n "$cname" ] || return 0
+
+       config_get target "$cfg" target
+       [ -n "$target" ] || return 0
+
+       append args "--cname=${cname},${target}"
 }
 
 start() {
        include /lib/network
        scan_interfaces
 }
 
 start() {
        include /lib/network
        scan_interfaces
+
+       local lanaddr
+       config_get lanaddr "lan" ipaddr
+
        config_load dhcp
 
        args=""
        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_srv_add srvhost
+       config_foreach dhcp_mx_add mxhost
        config_foreach dhcp_add dhcp
        config_foreach dhcp_add dhcp
-       
-       dnsmasq $args && {
+       config_foreach dhcp_cname_add cname
+
+       # add own hostname
+       [ -z "$lanaddr" ] || {
+               local hostname="$(uci_get system.@system[0].hostname)"
+               dhcp_domain_add "" "${hostname:-OpenWrt}" "$lanaddr"
+       }
+
+       service_start /usr/sbin/dnsmasq $args && {
                rm -f /tmp/resolv.conf
                rm -f /tmp/resolv.conf
-               cat > /tmp/resolv.conf <<EOF
-nameserver 127.0.0.1
-search lan
-EOF
+               [ -n "$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() {
        }
 }
 
 stop() {
-       killall dnsmasq
+       service_stop /usr/sbin/dnsmasq && {
+               [ -f /tmp/resolv.conf ] && {
+                       rm -f /tmp/resolv.conf
+                       ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
+               }
+       }
 }
 }
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