dnsmasq: drop --interface and --except-interface options when the interface cannot...
[openwrt/openwrt.git] / package / network / services / dnsmasq / files / dnsmasq.init
index 052a22dade85be5f5d020abf99d1f0782b143fd3..2b81a61bcc17c63fc5a86204c22b630babb20ed2 100644 (file)
@@ -1,7 +1,7 @@
 #!/bin/sh /etc/rc.common
 # Copyright (C) 2007-2012 OpenWrt.org
 
-START=60
+START=19
 
 USE_PROCD=1
 PROG=/usr/sbin/dnsmasq
@@ -13,13 +13,35 @@ ADD_LOCAL_DOMAIN=1
 ADD_LOCAL_HOSTNAME=1
 
 CONFIGFILE="/var/etc/dnsmasq.conf"
+CONFIGFILE_TMP="/var/etc/dnsmasq.conf.$$"
 HOSTFILE="/tmp/hosts/dhcp"
 TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
+TIMESTAMPFILE="/etc/dnsmasq.time"
+TIMEVALIDFILE="/var/state/dnsmasqsec"
 
 xappend() {
        local value="$1"
 
-       echo "${value#--}" >> $CONFIGFILE
+       echo "${value#--}" >> $CONFIGFILE_TMP
+}
+
+hex_to_hostid() {
+        local var="$1"
+        local hex="${2#0x}"     # strip optional "0x" prefix
+
+        if [ -n "${hex//[0-9a-fA-F]/}" ]; then
+                # is invalid hex literal
+                return 1
+        fi
+
+        # convert into host id
+        export "$var=$(
+                printf "%0x:%0x"  \
+                        $(((0x$hex >> 16) % 65536)) \
+                        $(( 0x$hex        % 256))
+        )"
+
+        return 0
 }
 
 dhcp_calc() {
@@ -42,6 +64,12 @@ dhcp_check() {
 
        [ -s "$stamp" ] && return $(cat "$stamp")
 
+       # If there's no carrier yet, skip this interface.
+       # The init script will be called again once the link is up
+       case "$(devstatus "$ifname" | jsonfilter -e @.carrier)" in
+               false) return 1;;
+       esac
+
        udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
 
        [ $rv -eq 1 ] && \
@@ -71,8 +99,9 @@ append_parm() {
        local section="$1"
        local option="$2"
        local switch="$3"
+       local default="$4"
        local _loctmp
-       config_get _loctmp "$section" "$option"
+       config_get _loctmp "$section" "$option" "$default"
        [ -z "$_loctmp" ] && return 0
        xappend "$switch=$_loctmp"
 }
@@ -90,12 +119,12 @@ append_ipset() {
 }
 
 append_interface() {
-       local ifname=$(uci_get_state network "$1" ifname "$1")
+       network_get_device ifname "$1" || return
        xappend "--interface=$ifname"
 }
 
 append_notinterface() {
-       local ifname=$(uci_get_state network "$1" ifname "$1")
+       network_get_device ifname "$1" || return
        xappend "--except-interface=$ifname"
 }
 
@@ -120,19 +149,24 @@ dnsmasq() {
        append_bool "$cfg" nohosts "--no-hosts"
        append_bool "$cfg" nonegcache "--no-negcache"
        append_bool "$cfg" strictorder "--strict-order"
-       append_bool "$cfg" logqueries "--log-queries"
+       append_bool "$cfg" logqueries "--log-queries=extra"
        append_bool "$cfg" noresolv "--no-resolv"
        append_bool "$cfg" localise_queries "--localise-queries"
        append_bool "$cfg" readethers "--read-ethers"
        append_bool "$cfg" dbus "--enable-dbus"
        append_bool "$cfg" boguspriv "--bogus-priv"
        append_bool "$cfg" expandhosts "--expand-hosts"
-       append_bool "$cfg" enable_tftp "--enable-tftp"
-       append_bool "$cfg" nonwildcard "--bind-interfaces"
+       config_get tftp_root "$cfg" "tftp_root"
+       [ -d "$tftp_root" ] && append_bool "$cfg" enable_tftp "--enable-tftp"
+       append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
+       append_bool "$cfg" nonwildcard "--bind-dynamic"
        append_bool "$cfg" fqdn "--dhcp-fqdn"
        append_bool "$cfg" proxydnssec "--proxy-dnssec"
        append_bool "$cfg" localservice "--local-service"
        append_bool "$cfg" quietdhcp "--quiet-dhcp"
+       append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
+       append_bool "$cfg" allservers "--all-servers"
+       append_bool "$cfg" noping "--no-ping"
 
        append_parm "$cfg" dhcpscript "--dhcp-script"
        append_parm "$cfg" cachesize "--cache-size"
@@ -141,6 +175,8 @@ dnsmasq() {
        append_parm "$cfg" ednspacket_max "--edns-packet-max"
        append_parm "$cfg" dhcpleasemax "--dhcp-lease-max"
        append_parm "$cfg" "queryport" "--query-port"
+       append_parm "$cfg" "minport" "--min-port"
+       append_parm "$cfg" "maxport" "--max-port"
        append_parm "$cfg" "domain" "--domain"
        append_parm "$cfg" "local" "--server"
        config_list_foreach "$cfg" "server" append_server
@@ -150,8 +186,9 @@ dnsmasq() {
        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" "--dhcp-leasefile"
-       append_parm "$cfg" "resolvfile" "--resolv-file"
+       append_parm "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
+       append_parm "$cfg" "resolvfile" "--resolv-file" "/tmp/resolv.conf.auto"
+       append_parm "$cfg" "serversfile" "--servers-file"
        append_parm "$cfg" "tftp_root" "--tftp-root"
        append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
        append_parm "$cfg" "local_ttl" "--local-ttl"
@@ -165,17 +202,20 @@ dnsmasq() {
        config_get_bool readethers "$cfg" readethers
        [ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
 
-       config_get leasefile $cfg leasefile
+       config_get leasefile $cfg leasefile "/tmp/dhcp.leases"
        [ -n "$leasefile" -a \! -e "$leasefile" ] && touch "$leasefile"
        config_get_bool cachelocal "$cfg" cachelocal 1
 
+       config_get_bool noresolv "$cfg" noresolv 0
+       if [ "$noresolv" != "1" ]; then
+               config_get resolvfile "$cfg" resolvfile "/tmp/resolv.conf.auto"
+               # So jail doesn't complain if file missing
+               [ -n "$resolvfile" -a \! -e "$resolvfile" ] && touch "$resolvfile"
+       fi
+
        config_get hostsfile "$cfg" dhcphostsfile
        [ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
 
-       mkdir -p /tmp/hosts /tmp/dnsmasq.d
-       xappend "--addn-hosts=/tmp/hosts"
-       xappend "--conf-dir=/tmp/dnsmasq.d"
-
        local rebind
        config_get_bool rebind "$cfg" rebind_protection 1
        [ $rebind -gt 0 ] && {
@@ -203,6 +243,12 @@ dnsmasq() {
        [ "$dnssec" -gt 0 ] && {
                xappend "--conf-file=$TRUSTANCHORSFILE"
                xappend "--dnssec"
+               [ -x /etc/init.d/sysntpd ] && {
+                       /etc/init.d/sysntpd enabled
+                       [ "$?" -ne 0 -o "$(uci_get system.ntp.enabled)" = "1" ] && {
+                               [ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
+                       }
+               }
                append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
        }
 
@@ -210,7 +256,19 @@ dnsmasq() {
 
        xappend "--dhcp-broadcast=tag:needs-broadcast"
 
-       echo >> $CONFIGFILE
+       mkdir -p /tmp/hosts /tmp/dnsmasq.d
+       xappend "--addn-hosts=/tmp/hosts"
+       xappend "--conf-dir=/tmp/dnsmasq.d"
+       xappend "--user=dnsmasq"
+       xappend "--group=dnsmasq"
+
+       echo >> $CONFIGFILE_TMP
+
+       config_get_bool enable_tftp "$cfg" enable_tftp 0
+       [ "$enable_tftp" -gt 0 ] && {
+               config_get tftp_root "$cfg" tftp_root
+               append EXTRA_MOUNT $tftp_root
+       }
 }
 
 dhcp_subscrid_add() {
@@ -301,6 +359,9 @@ dhcp_host_add() {
        config_get networkid "$cfg" networkid
        [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
 
+       config_get_bool enable "$cfg" enable 1
+       [ "$enable" = "0" ] && return 0
+
        config_get name "$cfg" name
        config_get ip "$cfg" ip
        [ -n "$ip" -o -n "$name" ] || return 0
@@ -324,10 +385,19 @@ dhcp_host_add() {
 
        config_get tag "$cfg" tag
 
+       if [ "$DHCPv6CAPABLE" -eq 1 ]; then
+               config_get hostid "$cfg" hostid
+               if [ -n "$hostid" ]; then
+                       hex_to_hostid hostid "$hostid"
+               fi
+       fi
+
        config_get_bool broadcast "$cfg" broadcast 0
        [ "$broadcast" = "0" ] && broadcast=
 
-       xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip}${name:+,$name}"
+       config_get leasetime "$cfg" leasetime
+
+       xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip${hostid:+,[::$hostid]}}${name:+,$name}${leasetime:+,$leasetime}"
 }
 
 dhcp_tag_add() {
@@ -531,40 +601,52 @@ dhcp_hostrecord_add() {
        xappend "--host-record=$record"
 }
 
+dhcp_relay_add() {
+       local cfg="$1"
+       local local_addr server_addr interface
+
+       config_get local_addr "$cfg" local_addr
+       [ -n "$local_addr" ] || return 0
+
+       config_get server_addr "$cfg" server_addr
+       [ -n "$server_addr" ] || return 0
+
+       config_get interface "$cfg" interface
+       if [ -z "$interface" ]; then
+               xappend "--dhcp-relay=$local_addr,$server_addr"
+       else
+               xappend "--dhcp-relay=$local_addr,$server_addr,$interface"
+       fi
+}
+
 service_triggers()
 {
        procd_add_reload_trigger "dhcp"
+       procd_add_raw_trigger "interface.*" 2000 /etc/init.d/dnsmasq reload
 }
 
-boot() {
-       # Will be launched through hotplug
-       return 0
+boot()
+{
+       BOOT=1
+       start "$@"
 }
 
 start_service() {
+       [ -n "$BOOT" ] && return
+
        include /lib/functions
 
        config_load dhcp
 
-       procd_open_instance
-       procd_set_param command $PROG -C $CONFIGFILE -d -x /var/run/dnsmasq/dnsmasq.pid
-       procd_set_param file $CONFIGFILE
-       procd_set_param respawn
-
-       procd_add_jail dnsmasq ubus log
-       procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE /etc/passwd /dev/urandom /etc/dnsmasq.conf /tmp/dnsmasq.d /tmp/resolv.conf.auto /etc/hosts /etc/ethers
-       procd_add_jail_mount_rw /var/run/dnsmasq/ /tmp/dhcp.leases
-       
-       procd_close_instance
-
        # before we can call xappend
        mkdir -p /var/run/dnsmasq/
        mkdir -p $(dirname $CONFIGFILE)
        mkdir -p /var/lib/misc
        touch /tmp/dhcp.leases
 
+       [ -f "$TIMESTAMPFILE" ] && rm -f "$TIMESTAMPFILE"
 
-       echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE
+       echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
        echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE
 
        # if we did this last, we could override auto-generated config
@@ -572,10 +654,12 @@ start_service() {
                xappend "--conf-file=/etc/dnsmasq.conf"
        }
 
+       $PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
+
        args=""
        config_foreach dnsmasq dnsmasq
        config_foreach dhcp_host_add host
-       echo >> $CONFIGFILE
+       echo >> $CONFIGFILE_TMP
        config_foreach dhcp_boot_add boot
        config_foreach dhcp_mac_add mac
        config_foreach dhcp_tag_add tag
@@ -586,27 +670,43 @@ start_service() {
        config_foreach dhcp_subscrid_add subscrid
        config_foreach dhcp_domain_add domain
        config_foreach dhcp_hostrecord_add hostrecord
+       config_foreach dhcp_relay_add relay
 
        # add own hostname
-       local lanaddr
-       [ $ADD_LOCAL_HOSTNAME -eq 1 ] && network_get_ipaddr lanaddr "lan" && {
-               local hostname="$(uci_get system @system[0] hostname OpenWrt)"
-               dhcp_domain_add "" "$hostname" "$lanaddr"
+       [ $ADD_LOCAL_HOSTNAME -eq 1 ] && {
+               local lanaddr lanaddr6
+               local ulaprefix="$(uci_get network @globals[0] ula_prefix)"
+               local hostname="$(uci_get system @system[0] hostname Lede)"
+
+               network_get_ipaddr lanaddr "lan" && {
+                       dhcp_domain_add "" "$hostname" "$lanaddr"
+               }
+
+               [ -n "$ulaprefix" ] && network_get_ipaddrs6 lanaddr6 "lan" && {
+                       for lanaddr6 in $lanaddr6; do
+                               case "$lanaddr6" in
+                                       "${ulaprefix%%:/*}"*)
+                                               dhcp_domain_add "" "$hostname" "$lanaddr6"
+                                       ;;
+                               esac
+                       done
+               }
        }
 
-       echo >> $CONFIGFILE
+       echo >> $CONFIGFILE_TMP
        config_foreach dhcp_srv_add srvhost
        config_foreach dhcp_mx_add mxhost
-       echo >> $CONFIGFILE
+       echo >> $CONFIGFILE_TMP
 
        config_get odhcpd_is_active odhcpd maindhcp
        if [ "$odhcpd_is_active" != "1" ]; then
                config_foreach dhcp_add dhcp
        fi
 
-       echo >> $CONFIGFILE
+       echo >> $CONFIGFILE_TMP
        config_foreach dhcp_cname_add cname
-       echo >> $CONFIGFILE
+       echo >> $CONFIGFILE_TMP
+       mv -f $CONFIGFILE_TMP $CONFIGFILE
 
        rm -f /tmp/resolv.conf
        [ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$DOMAIN" ] && {
@@ -616,6 +716,17 @@ start_service() {
        for DNS_SERVER in $DNS_SERVERS ; do
                echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf
        done
+
+       procd_open_instance
+       procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq.pid
+       procd_set_param file $CONFIGFILE
+       procd_set_param respawn
+
+       procd_add_jail dnsmasq ubus log
+       procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE /etc/passwd /etc/group /etc/TZ /dev/null /dev/urandom /etc/dnsmasq.conf /tmp/dnsmasq.d /tmp/resolv.conf.auto /etc/hosts /etc/ethers $EXTRA_MOUNT
+       procd_add_jail_mount_rw /var/run/dnsmasq/ /tmp/dhcp.leases
+
+       procd_close_instance
 }
 
 reload_service() {