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 c69f0d2..edd22ad 100644 (file)
--- a/package/dnsmasq/files/dnsmasq.init
+++ b/package/dnsmasq/files/dnsmasq.init
@@ -2,6 +2,9 @@
 # Copyright (C) 2007 OpenWrt.org
 
 START=60
+
+SERVICE_USE_PID=1
+
 DNS_SERVERS=""
 DOMAIN=""
 
@@ -55,6 +58,10 @@ append_addnhosts() {
        append args "-H $1"
 }
 
+append_bogusnxdomain() {
+       append args "-B $1"
+}
+
 dnsmasq() {
        local cfg="$1"
        append_bool "$cfg" authoritative "-K"
@@ -74,6 +81,8 @@ dnsmasq() {
        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 "$cfg" ednspacket_max "-P"
@@ -85,6 +94,7 @@ dnsmasq() {
        config_list_foreach "$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"
@@ -93,10 +103,10 @@ dnsmasq() {
        config_get DOMAIN "$cfg" domain
 
        config_get_bool readethers "$cfg" readethers
-       [ "$readethers" = "1" ] && [ -e "/etc/ethers" ] || touch /etc/ethers
+       [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
 
        config_get leasefile $cfg leasefile
-       [ -e "$leasefile" ] || touch "$leasefile"
+       [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
        config_get_bool cachelocal "$cfg" cachelocal 1
 
        config_get hostsfile "$cfg" dhcphostsfile
@@ -199,20 +209,19 @@ dhcp_vendorclass_add() {
 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 name "$cfg" name
        config_get ip "$cfg" ip
-       [ -n "$ip" ] || return 0
+       [ -n "$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${name:+,$name}"
+       append args "--dhcp-host=$macs${networkid:+,net:$networkid}${ip:+,$ip}${name:+,$name}"
 }
 
 dhcp_mac_add() {
@@ -265,7 +274,7 @@ dhcp_add() {
                DNS_SERVERS="$DNS_SERVERS $dnsserver"
        }
 
-       append_bool "$cfg" ignore "-2 '$ifname'" && return 0
+       append_bool "$cfg" ignore "-2 $ifname" && return 0
 
        config_get proto "$net" proto
        [ static = "$proto" ] || return 0
@@ -277,7 +286,12 @@ dhcp_add() {
        #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 >&- && return 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 "$cfg" start
@@ -289,6 +303,7 @@ dhcp_add() {
        leasetime="${leasetime:-12h}"
        start="$(dhcp_calc "${start:-100}")"
        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}"
@@ -311,10 +326,10 @@ dhcp_domain_add() {
        local cfg="$1"
        local ip name names
 
-       config_get names "$cfg" name
+       config_get names "$cfg" name "$2"
        [ -n "$names" ] || return 0
 
-       config_get ip "$cfg" ip
+       config_get ip "$cfg" ip "$3"
        [ -n "$ip" ] || return 0
 
        local oIFS="$IFS"; IFS="."; set -- $ip; IFS="$oIFS"
@@ -327,7 +342,7 @@ dhcp_domain_add() {
                        fqdn="$fqdn${DOMAIN:+.$DOMAIN}"
 
                append args "-A /$fqdn/$ip"
-               
+
                [ -n "$raddr" ] && {
                        append args "--ptr-record=$raddr,$fqdn"
                        raddr=""
@@ -345,16 +360,51 @@ dhcp_srv_add() {
        [ -n "$target" ] || return 0
 
        config_get port "$cfg" port
+       [ -n "$port" ] || return 0
 
-       local service="$srv,$target"
-       [ -n "$port" ] && service="$service,$port"
+       config_get class "$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
+
+       local lanaddr
+       config_get lanaddr "lan" ipaddr
+
        config_load dhcp
 
        args=""
@@ -369,9 +419,17 @@ start() {
        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_cname_add cname
 
-       /usr/sbin/dnsmasq $args && {
+       # add own hostname
+       [ -z "$lanaddr" ] || {
+               local hostname="$(uci_get system.@system[0].hostname)"
+               dhcp_domain_add "" "${hostname:-OpenWrt}" "$lanaddr"
+       }
+
+       service_start /usr/sbin/dnsmasq $args && {
                rm -f /tmp/resolv.conf
                [ -n "$DOMAIN" ] && echo "search $DOMAIN" >> /tmp/resolv.conf
                DNS_SERVERS="$DNS_SERVERS 127.0.0.1"
@@ -382,10 +440,10 @@ start() {
 }
 
 stop() {
-       [ -f /tmp/resolv.conf ] && {
-               rm -f /tmp/resolv.conf
-               ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
+       service_stop /usr/sbin/dnsmasq && {
+               [ -f /tmp/resolv.conf ] && {
+                       rm -f /tmp/resolv.conf
+                       ln -s /tmp/resolv.conf.auto /tmp/resolv.conf
+               }
        }
-       killall dnsmasq
-       return 0
 }