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1173 lines
29 KiB
Bash
1173 lines
29 KiB
Bash
#!/bin/sh /etc/rc.common
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# Copyright (C) 2007-2012 OpenWrt.org
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START=19
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USE_PROCD=1
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PROG=/usr/sbin/dnsmasq
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ADD_LOCAL_DOMAIN=1
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ADD_LOCAL_HOSTNAME=1
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ADD_WAN_FQDN=0
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ADD_LOCAL_FQDN=""
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BASECONFIGFILE="/var/etc/dnsmasq.conf"
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BASEHOSTFILE="/tmp/hosts/dhcp"
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TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
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TIMEVALIDFILE="/var/state/dnsmasqsec"
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BASEDHCPSTAMPFILE="/var/run/dnsmasq"
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DHCPBOGUSHOSTNAMEFILE="/usr/share/dnsmasq/dhcpbogushostname.conf"
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RFC6761FILE="/usr/share/dnsmasq/rfc6761.conf"
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DHCPSCRIPT="/usr/lib/dnsmasq/dhcp-script.sh"
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DNSMASQ_DHCP_VER=4
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dnsmasq_ignore_opt() {
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local opt="$1"
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if [ -z "$dnsmasq_features" ]; then
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dnsmasq_features="$(dnsmasq --version | grep -m1 'Compile time options:' | cut -d: -f2) "
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[ "${dnsmasq_features#* DHCP }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp=1
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[ "${dnsmasq_features#* DHCPv6 }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp6=1
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[ "${dnsmasq_features#* DNSSEC }" = "$dnsmasq_features" ] || dnsmasq_has_dnssec=1
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[ "${dnsmasq_features#* TFTP }" = "$dnsmasq_features" ] || dnsmasq_has_tftp=1
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[ "${dnsmasq_features#* ipset }" = "$dnsmasq_features" ] || dnsmasq_has_ipset=1
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fi
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case "$opt" in
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dhcp-duid|\
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ra-param)
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[ -z "$dnsmasq_has_dhcp6" ] ;;
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dhcp-*|\
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bootp-*|\
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pxe-*)
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[ -z "$dnsmasq_has_dhcp" ] ;;
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dnssec-*|\
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trust-anchor)
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[ -z "$dnsmasq_has_dnssec" ] ;;
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tftp-*)
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[ -z "$dnsmasq_has_tftp" ] ;;
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ipset)
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[ -z "$dnsmasq_has_ipset" ] ;;
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*)
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return 1
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esac
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}
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xappend() {
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local value="${1#--}"
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local opt="${value%%=*}"
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if ! dnsmasq_ignore_opt "$opt"; then
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echo "$value" >>$CONFIGFILE_TMP
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fi
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}
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hex_to_hostid() {
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local var="$1"
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local hex="${2#0x}" # strip optional "0x" prefix
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if [ -n "${hex//[0-9a-fA-F]/}" ]; then
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# is invalid hex literal
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return 1
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fi
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# convert into host id
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export "$var=$(
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printf "%0x:%0x" \
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$(((0x$hex >> 16) % 65536)) \
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$(( 0x$hex % 65536))
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)"
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return 0
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}
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dhcp_calc() {
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local ip="$1"
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local res=0
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while [ -n "$ip" ]; do
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part="${ip%%.*}"
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res="$(($res * 256))"
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res="$(($res + $part))"
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[ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip=
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done
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echo "$res"
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}
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dhcp_check() {
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local ifname="$1"
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local stamp="${BASEDHCPSTAMPFILE_CFG}.${ifname}.dhcp"
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local rv=0
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[ -s "$stamp" ] && return $(cat "$stamp")
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# If there's no carrier yet, skip this interface.
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# The init script will be called again once the link is up
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case "$(devstatus "$ifname" | jsonfilter -e @.carrier)" in
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false) return 1;;
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esac
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udhcpc -n -q -s /bin/true -t 1 -i "$ifname" >&- && rv=1 || rv=0
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[ $rv -eq 1 ] && \
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logger -t dnsmasq \
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"found already running DHCP-server on interface '$ifname'" \
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"refusing to start, use 'option force 1' to override"
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echo $rv > "$stamp"
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return $rv
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}
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log_once() {
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pidof dnsmasq >/dev/null || \
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logger -t dnsmasq "$@"
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}
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has_handler() {
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local file
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for file in /etc/hotplug.d/dhcp/* /etc/hotplug.d/tftp/* /etc/hotplug.d/neigh/*; do
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[ -f "$file" ] && return 0
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done
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return 1
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}
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append_bool() {
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local section="$1"
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local option="$2"
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local value="$3"
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local default="$4"
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local _loctmp
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[ -z "$default" ] && default="0"
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config_get_bool _loctmp "$section" "$option" "$default"
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[ $_loctmp -gt 0 ] && xappend "$value"
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}
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append_parm() {
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local section="$1"
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local option="$2"
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local switch="$3"
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local default="$4"
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local _loctmp
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config_get _loctmp "$section" "$option" "$default"
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[ -z "$_loctmp" ] && return 0
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xappend "$switch=$_loctmp"
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}
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append_server() {
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xappend "--server=$1"
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}
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append_rev_server() {
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xappend "--rev-server=$1"
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}
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append_address() {
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xappend "--address=$1"
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}
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append_ipset() {
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xappend "--ipset=$1"
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}
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append_interface() {
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network_get_device ifname "$1" || ifname="$1"
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xappend "--interface=$ifname"
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}
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append_listenaddress() {
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xappend "--listen-address=$1"
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}
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append_notinterface() {
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network_get_device ifname "$1" || ifname="$1"
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xappend "--except-interface=$ifname"
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}
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append_addnhosts() {
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xappend "--addn-hosts=$1"
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}
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append_bogusnxdomain() {
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xappend "--bogus-nxdomain=$1"
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}
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append_pxe_service() {
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xappend "--pxe-service=$1"
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}
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append_interface_name() {
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xappend "--interface-name=$1,$2"
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}
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filter_dnsmasq() {
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local cfg="$1" func="$2" match_cfg="$3" found_cfg
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# use entry when no instance entry set, or if it matches
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config_get found_cfg "$cfg" "instance"
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if [ -z "$found_cfg" -o "$found_cfg" = "$match_cfg" ]; then
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$func $cfg
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fi
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}
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dhcp_subscrid_add() {
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local cfg="$1"
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config_get networkid "$cfg" networkid
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[ -n "$networkid" ] || return 0
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config_get subscriberid "$cfg" subscriberid
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[ -n "$subscriberid" ] || return 0
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xappend "--dhcp-subscrid=$networkid,$subscriberid"
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config_get_bool force "$cfg" force 0
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dhcp_option_add "$cfg" "$networkid" "$force"
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}
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dhcp_remoteid_add() {
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local cfg="$1"
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config_get networkid "$cfg" networkid
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[ -n "$networkid" ] || return 0
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config_get remoteid "$cfg" remoteid
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[ -n "$remoteid" ] || return 0
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xappend "--dhcp-remoteid=$networkid,$remoteid"
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config_get_bool force "$cfg" force 0
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dhcp_option_add "$cfg" "$networkid" "$force"
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}
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dhcp_circuitid_add() {
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# TODO: DHCPV6 does not have circuitid; catch "option6:"
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local cfg="$1"
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config_get networkid "$cfg" networkid
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[ -n "$networkid" ] || return 0
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config_get circuitid "$cfg" circuitid
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[ -n "$circuitid" ] || return 0
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xappend "--dhcp-circuitid=$networkid,$circuitid"
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config_get_bool force "$cfg" force 0
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dhcp_option_add "$cfg" "$networkid" "$force"
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}
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dhcp_userclass_add() {
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local cfg="$1"
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config_get networkid "$cfg" networkid
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[ -n "$networkid" ] || return 0
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config_get userclass "$cfg" userclass
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[ -n "$userclass" ] || return 0
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xappend "--dhcp-userclass=$networkid,$userclass"
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config_get_bool force "$cfg" force 0
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dhcp_option_add "$cfg" "$networkid" "$force"
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}
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dhcp_vendorclass_add() {
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# TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
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local cfg="$1"
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config_get networkid "$cfg" networkid
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[ -n "$networkid" ] || return 0
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config_get vendorclass "$cfg" vendorclass
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[ -n "$vendorclass" ] || return 0
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xappend "--dhcp-vendorclass=$networkid,$vendorclass"
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config_get_bool force "$cfg" force 0
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dhcp_option_add "$cfg" "$networkid" "$force"
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}
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dhcp_match_add() {
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local cfg="$1"
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config_get networkid "$cfg" networkid
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[ -n "$networkid" ] || return 0
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config_get match "$cfg" match
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[ -n "$match" ] || return 0
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xappend "--dhcp-match=$networkid,$match"
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config_get_bool force "$cfg" force 0
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dhcp_option_add "$cfg" "$networkid" "$force"
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}
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dhcp_host_add() {
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local cfg="$1"
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local hosttag nametime addrs duids macs tags
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config_get_bool force "$cfg" force 0
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config_get networkid "$cfg" networkid
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[ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" "$force"
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config_get_bool enable "$cfg" enable 1
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[ "$enable" = "0" ] && return 0
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config_get name "$cfg" name
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config_get ip "$cfg" ip
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config_get hostid "$cfg" hostid
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[ -n "$ip" -o -n "$name" -o -n "$hostid" ] || return 0
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config_get_bool dns "$cfg" dns 0
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[ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
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echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE_TMP
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}
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config_get mac "$cfg" mac
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config_get duid "$cfg" duid
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config_get tag "$cfg" tag
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if [ -n "$mac" ]; then
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# --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
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# many MAC are possible to track a laptop ON/OFF dock
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for m in $mac; do append macs "$m" ","; done
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fi
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if [ $DNSMASQ_DHCP_VER -eq 6 -a -n "$duid" ]; then
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# --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
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# one (virtual) machine gets one DUID per RFC3315
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duids="id:${duid// */}"
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fi
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if [ -z "$macs" -a -z "$duids" ]; then
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# --dhcp-host=lap,192.168.0.199,[::beef]
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[ -n "$name" ] || return 0
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macs="$name"
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name=""
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fi
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if [ -n "$hostid" ]; then
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hex_to_hostid hostid "$hostid"
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fi
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if [ -n "$tag" ]; then
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for t in $tag; do append tags "$t" ",set:"; done
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fi
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config_get_bool broadcast "$cfg" broadcast 0
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config_get leasetime "$cfg" leasetime
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[ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
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hosttag="${networkid:+,set:${networkid}}${tags:+,set:${tags}}$broadcast"
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nametime="${name:+,$name}${leasetime:+,$leasetime}"
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if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
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addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
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xappend "--dhcp-host=$macs${duids:+,$duids}$hosttag$addrs$nametime"
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else
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xappend "--dhcp-host=$macs$hosttag${ip:+,$ip}$nametime"
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fi
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}
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dhcp_this_host_add() {
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local net="$1"
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local ifname="$2"
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local mode="$3"
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local routerstub routername ifdashname
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local lanaddr lanaddr6 lanaddrs6 ulaprefix
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if [ "$mode" -gt 0 ] ; then
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ifdashname="${ifname//./-}"
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routerstub="$( md5sum /etc/os-release )"
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routerstub="router-${routerstub// */}"
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routername="$( uci_get system @system[0] hostname $routerstub )"
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if [ "$mode" -gt 1 ] ; then
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if [ "$mode" -gt 2 ] ; then
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if [ "$mode" -gt 3 ] ; then
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append_interface_name "$ifdashname.$routername.$DOMAIN" "$ifname"
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fi
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append_interface_name "$routername.$DOMAIN" "$ifname"
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fi
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# All IP addresses discovered by dnsmasq will be labeled (except fe80::)
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append_interface_name "$routername" "$ifname"
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else
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# This uses a static host file entry for only limited addresses.
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# Use dnsmasq option "--expandhosts" to enable FQDN on host files.
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ulaprefix="$(uci_get network @globals[0] ula_prefix)"
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network_get_ipaddr lanaddr "$net"
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network_get_ipaddrs6 lanaddrs6 "$net"
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if [ -n "$lanaddr" ] ; then
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dhcp_domain_add "" "$routername" "$lanaddr"
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fi
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if [ -n "$ulaprefix" -a -n "$lanaddrs6" ] ; then
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for lanaddr6 in $lanaddrs6 ; do
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case "$lanaddr6" in
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"${ulaprefix%%:/*}"*)
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dhcp_domain_add "" "$routername" "$lanaddr6"
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;;
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esac
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done
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fi
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fi
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fi
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}
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dhcp_tag_add() {
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# NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
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local cfg="$1"
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tag="$cfg"
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[ -n "$tag" ] || return 0
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config_get_bool force "$cfg" force 0
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[ "$force" = "0" ] && force=
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config_get option "$cfg" dhcp_option
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for o in $option; do
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xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
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done
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}
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dhcp_mac_add() {
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local cfg="$1"
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config_get networkid "$cfg" networkid
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[ -n "$networkid" ] || return 0
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config_get mac "$cfg" mac
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[ -n "$mac" ] || return 0
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xappend "--dhcp-mac=$networkid,$mac"
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dhcp_option_add "$cfg" "$networkid"
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}
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dhcp_boot_add() {
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# TODO: BOOTURL is different between DHCPv4 and DHCPv6
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local cfg="$1"
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config_get networkid "$cfg" networkid
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config_get filename "$cfg" filename
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[ -n "$filename" ] || return 0
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config_get servername "$cfg" servername
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config_get serveraddress "$cfg" serveraddress
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[ -n "$serveraddress" -a ! -n "$servername" ] && return 0
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xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
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config_get_bool force "$cfg" force 0
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dhcp_option_add "$cfg" "$networkid" "$force"
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}
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dhcp_add() {
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local cfg="$1"
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local dhcp6range="::"
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local nettag
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local tags
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config_get net "$cfg" interface
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[ -n "$net" ] || return 0
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config_get networkid "$cfg" networkid
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[ -n "$networkid" ] || networkid="$net"
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network_get_device ifname "$net" || return 0
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[ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
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DNS_SERVERS="$DNS_SERVERS $dnsserver"
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}
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append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && {
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# Many ISP do not have useful names for DHCP customers (your WAN).
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dhcp_this_host_add "$net" "$ifname" "$ADD_WAN_FQDN"
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return 0
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}
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network_get_subnet subnet "$net" || return 0
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network_get_protocol proto "$net" || return 0
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# Do not support non-static interfaces for now
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[ static = "$proto" ] || return 0
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# Override interface netmask with dhcp config if applicable
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config_get netmask "$cfg" netmask "${subnet##*/}"
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#check for an already active dhcp server on the interface, unless 'force' is set
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config_get_bool force "$cfg" force 0
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[ $force -gt 0 ] || dhcp_check "$ifname" || return 0
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config_get start "$cfg" start 100
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config_get limit "$cfg" limit 150
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config_get leasetime "$cfg" leasetime 12h
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config_get options "$cfg" options
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config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
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config_get dhcpv4 "$cfg" dhcpv4
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config_get dhcpv6 "$cfg" dhcpv6
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config_get ra "$cfg" ra
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config_get ra_management "$cfg" ra_management
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config_get ra_preference "$cfg" ra_preference
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config_get dns "$cfg" dns
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config_list_foreach "$cfg" "interface_name" append_interface_name "$ifname"
|
|
|
|
# Put the router host name on this DHCP served interface address(es)
|
|
dhcp_this_host_add "$net" "$ifname" "$ADD_LOCAL_FQDN"
|
|
|
|
start="$( dhcp_calc "$start" )"
|
|
|
|
add_tag() {
|
|
tags="${tags}tag:$1,"
|
|
}
|
|
config_list_foreach "$cfg" tag add_tag
|
|
|
|
nettag="${networkid:+set:${networkid},}"
|
|
|
|
if [ "$limit" -gt 0 ] ; then
|
|
limit=$((limit-1))
|
|
fi
|
|
|
|
eval "$(ipcalc.sh "${subnet%%/*}" $netmask $start $limit)"
|
|
|
|
if [ "$dynamicdhcp" = "0" ] ; then
|
|
END="static"
|
|
dhcp6range="::,static"
|
|
else
|
|
dhcp6range="::1000,::ffff"
|
|
fi
|
|
|
|
|
|
if [ "$dhcpv4" != "disabled" ] ; then
|
|
xappend "--dhcp-range=$tags$nettag$START,$END,$NETMASK,$leasetime${options:+ $options}"
|
|
fi
|
|
|
|
|
|
if [ $DNSMASQ_DHCP_VER -eq 6 -a "$ra" = "server" ] ; then
|
|
# Note: dnsmasq cannot just be a DHCPv6 server (all-in-1)
|
|
# and let some other machine(s) send RA pointing to it.
|
|
|
|
case $ra_preference in
|
|
*high*)
|
|
xappend "--ra-param=$ifname,high,0,7200"
|
|
;;
|
|
*low*)
|
|
xappend "--ra-param=$ifname,low,0,7200"
|
|
;;
|
|
*)
|
|
# Send UNSOLICITED RA at default interval and live for 2 hours.
|
|
# TODO: convert flexible lease time into route life time (only seconds).
|
|
xappend "--ra-param=$ifname,0,7200"
|
|
;;
|
|
esac
|
|
|
|
if [ "$dhcpv6" = "disabled" ] ; then
|
|
ra_management="3"
|
|
fi
|
|
|
|
|
|
case $ra_management in
|
|
0)
|
|
# SLACC with DCHP for extended options
|
|
xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-stateless,ra-names"
|
|
;;
|
|
2)
|
|
# DHCP address and RA only for management redirection
|
|
xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,$leasetime"
|
|
;;
|
|
3)
|
|
# SLAAC only but dnsmasq attempts to link HOSTNAME, DHCPv4 MAC, and SLAAC
|
|
xappend "--dhcp-range=$nettag::,constructor:$ifname,ra-only,ra-names"
|
|
;;
|
|
*)
|
|
# SLAAC and full DHCP
|
|
xappend "--dhcp-range=$nettag$dhcp6range,constructor:$ifname,slaac,ra-names,$leasetime"
|
|
;;
|
|
esac
|
|
|
|
if [ -n "$dns" ]; then
|
|
dnss=""
|
|
for d in $dns; do append dnss "[$d]" ","; done
|
|
else
|
|
dnss="[::]"
|
|
fi
|
|
|
|
dhcp_option_append "option6:dns-server,$dnss" "$networkid"
|
|
fi
|
|
|
|
dhcp_option_add "$cfg" "$networkid" 0
|
|
dhcp_option_add "$cfg" "$networkid" 2
|
|
}
|
|
|
|
dhcp_option_append() {
|
|
local option="$1"
|
|
local networkid="$2"
|
|
local force="$3"
|
|
|
|
xappend "--dhcp-option${force:+-force}=${networkid:+$networkid,}$option"
|
|
}
|
|
|
|
dhcp_option_add() {
|
|
# NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
|
|
local cfg="$1"
|
|
local networkid="$2"
|
|
local force="$3"
|
|
local opt="dhcp_option"
|
|
|
|
[ "$force" = "0" ] && force=
|
|
[ "$force" = "2" ] && opt="dhcp_option_force"
|
|
|
|
local list_len
|
|
config_get list_len "$cfg" "${opt}_LENGTH"
|
|
|
|
if [ -n "$list_len" ]; then
|
|
config_list_foreach "$cfg" "$opt" dhcp_option_append "$networkid" "$force"
|
|
else
|
|
config_get dhcp_option "$cfg" "$opt"
|
|
|
|
[ -n "$dhcp_option" ] && echo "Warning: the 'option $opt' syntax is deprecated, use 'list $opt'" >&2
|
|
|
|
local option
|
|
for option in $dhcp_option; do
|
|
dhcp_option_append "$option" "$networkid" "$force"
|
|
done
|
|
fi
|
|
}
|
|
|
|
dhcp_domain_add() {
|
|
local cfg="$1"
|
|
local ip name names record
|
|
|
|
config_get names "$cfg" name "$2"
|
|
[ -n "$names" ] || return 0
|
|
|
|
config_get ip "$cfg" ip "$3"
|
|
[ -n "$ip" ] || return 0
|
|
|
|
for name in $names; do
|
|
record="${record:+$record }$name"
|
|
done
|
|
|
|
echo "$ip $record" >> $HOSTFILE_TMP
|
|
}
|
|
|
|
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}}"
|
|
|
|
xappend "--srv-host=$service"
|
|
}
|
|
|
|
dhcp_mx_add() {
|
|
local cfg="$1"
|
|
local domain relay pref
|
|
|
|
config_get domain "$cfg" domain
|
|
[ -n "$domain" ] || return 0
|
|
|
|
config_get relay "$cfg" relay
|
|
[ -n "$relay" ] || return 0
|
|
|
|
config_get pref "$cfg" pref 0
|
|
|
|
local service="$domain,$relay,$pref"
|
|
|
|
xappend "--mx-host=$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 "$target" ] || return 0
|
|
|
|
xappend "--cname=${cname},${target}"
|
|
}
|
|
|
|
dhcp_hostrecord_add() {
|
|
local cfg="$1"
|
|
local names addresses record val
|
|
|
|
config_get names "$cfg" name "$2"
|
|
if [ -z "$names" ]; then
|
|
return 0
|
|
fi
|
|
|
|
config_get addresses "$cfg" ip "$3"
|
|
if [ -z "$addresses" ]; then
|
|
return 0
|
|
fi
|
|
|
|
for val in $names $addresses; do
|
|
record="${record:+$record,}$val"
|
|
done
|
|
|
|
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,$server_addr"
|
|
else
|
|
network_get_device ifname "$interface" || return
|
|
xappend "--dhcp-relay=$local_addr,$server_addr,$ifname"
|
|
fi
|
|
}
|
|
|
|
dnsmasq_start()
|
|
{
|
|
local cfg="$1"
|
|
local disabled user_dhcpscript
|
|
local resolvfile localuse=0
|
|
|
|
config_get_bool disabled "$cfg" disabled 0
|
|
[ "$disabled" -gt 0 ] && return 0
|
|
|
|
# reset list of DOMAINS and DNS servers (for each dnsmasq instance)
|
|
DNS_SERVERS=""
|
|
DOMAIN=""
|
|
CONFIGFILE="${BASECONFIGFILE}.${cfg}"
|
|
CONFIGFILE_TMP="${CONFIGFILE}.$$"
|
|
HOSTFILE="${BASEHOSTFILE}.${cfg}"
|
|
HOSTFILE_TMP="${HOSTFILE}.$$"
|
|
BASEDHCPSTAMPFILE_CFG="${BASEDHCPSTAMPFILE}.${cfg}"
|
|
|
|
# before we can call xappend
|
|
mkdir -p /var/run/dnsmasq/
|
|
mkdir -p $(dirname $CONFIGFILE)
|
|
mkdir -p $(dirname $HOSTFILE)
|
|
mkdir -p /var/lib/misc
|
|
chown dnsmasq:dnsmasq /var/run/dnsmasq
|
|
|
|
echo "# auto-generated config file from /etc/config/dhcp" > $CONFIGFILE_TMP
|
|
echo "# auto-generated config file from /etc/config/dhcp" > $HOSTFILE_TMP
|
|
|
|
local dnsmasqconffile="/etc/dnsmasq.${cfg}.conf"
|
|
if [ ! -r "$dnsmasqconffile" ]; then
|
|
dnsmasqconffile=/etc/dnsmasq.conf
|
|
fi
|
|
|
|
# if we did this last, we could override auto-generated config
|
|
[ -f "${dnsmasqconffile}" ] && {
|
|
xappend "--conf-file=${dnsmasqconffile}"
|
|
}
|
|
|
|
$PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && DHCPv6CAPABLE=1 || DHCPv6CAPABLE=0
|
|
|
|
|
|
if [ -x /usr/sbin/odhcpd -a -x /etc/init.d/odhcpd ] ; then
|
|
local odhcpd_is_main odhcpd_is_enabled
|
|
config_get odhcpd_is_main odhcpd maindhcp 0
|
|
/etc/init.d/odhcpd enabled && odhcpd_is_enabled=1 || odhcpd_is_enabled=0
|
|
|
|
|
|
if [ "$odhcpd_is_enabled" -eq 0 -a "$DHCPv6CAPABLE" -eq 1 ] ; then
|
|
# DHCP V4 and V6 in DNSMASQ
|
|
DNSMASQ_DHCP_VER=6
|
|
elif [ "$odhcpd_is_main" -gt 0 ] ; then
|
|
# ODHCPD is doing it all
|
|
DNSMASQ_DHCP_VER=0
|
|
else
|
|
# You have ODHCPD but use DNSMASQ for DHCPV4
|
|
DNSMASQ_DHCP_VER=4
|
|
fi
|
|
|
|
elif [ "$DHCPv6CAPABLE" -eq 1 ] ; then
|
|
# DHCP V4 and V6 in DNSMASQ
|
|
DNSMASQ_DHCP_VER=6
|
|
else
|
|
DNSMASQ_DHCP_VER=4
|
|
fi
|
|
|
|
# Allow DHCP/DHCPv6 to be handled by ISC DHCPD
|
|
if [ -x /usr/sbin/dhcpd ] ; then
|
|
if [ -x /etc/init.d/dhcpd ] ; then
|
|
/etc/init.d/dhcpd enabled && DNSMASQ_DHCP_VER=0
|
|
fi
|
|
if [ -x /etc/init.d/dhcpd6 -a "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
|
|
/etc/init.d/dhcpd6 enabled && DNSMASQ_DHCP_VER=4
|
|
fi
|
|
fi
|
|
|
|
append_bool "$cfg" authoritative "--dhcp-authoritative"
|
|
append_bool "$cfg" nodaemon "--no-daemon"
|
|
append_bool "$cfg" domainneeded "--domain-needed"
|
|
append_bool "$cfg" filterwin2k "--filterwin2k"
|
|
append_bool "$cfg" nohosts "--no-hosts"
|
|
append_bool "$cfg" nonegcache "--no-negcache"
|
|
append_bool "$cfg" strictorder "--strict-order"
|
|
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" ubus "--enable-ubus" 1
|
|
append_bool "$cfg" expandhosts "--expand-hosts"
|
|
config_get tftp_root "$cfg" "tftp_root"
|
|
[ -n "$tftp_root" ] && mkdir -p "$tftp_root" && append_bool "$cfg" enable_tftp "--enable-tftp"
|
|
append_bool "$cfg" tftp_no_fail "--tftp-no-fail"
|
|
append_bool "$cfg" nonwildcard "--bind-dynamic" 1
|
|
append_bool "$cfg" fqdn "--dhcp-fqdn"
|
|
append_bool "$cfg" proxydnssec "--proxy-dnssec"
|
|
append_bool "$cfg" localservice "--local-service"
|
|
append_bool "$cfg" logdhcp "--log-dhcp"
|
|
append_bool "$cfg" quietdhcp "--quiet-dhcp"
|
|
append_bool "$cfg" sequential_ip "--dhcp-sequential-ip"
|
|
append_bool "$cfg" allservers "--all-servers"
|
|
append_bool "$cfg" noping "--no-ping"
|
|
append_bool "$cfg" rapidcommit "--dhcp-rapid-commit"
|
|
append_bool "$cfg" scriptarp "--script-arp"
|
|
|
|
append_parm "$cfg" logfacility "--log-facility"
|
|
|
|
append_parm "$cfg" cachesize "--cache-size"
|
|
append_parm "$cfg" dnsforwardmax "--dns-forward-max"
|
|
append_parm "$cfg" port "--port"
|
|
append_parm "$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 "$cfg" "listen_address" append_listenaddress
|
|
config_list_foreach "$cfg" "server" append_server
|
|
config_list_foreach "$cfg" "rev_server" append_rev_server
|
|
config_list_foreach "$cfg" "address" append_address
|
|
config_list_foreach "$cfg" "ipset" append_ipset
|
|
[ -n "$BOOT" ] || {
|
|
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 "$cfg" "leasefile" "--dhcp-leasefile" "/tmp/dhcp.leases"
|
|
append_parm "$cfg" "serversfile" "--servers-file"
|
|
append_parm "$cfg" "tftp_root" "--tftp-root"
|
|
append_parm "$cfg" "dhcp_boot" "--dhcp-boot"
|
|
append_parm "$cfg" "local_ttl" "--local-ttl"
|
|
append_parm "$cfg" "max_ttl" "--max-ttl"
|
|
append_parm "$cfg" "min_cache_ttl" "--min-cache-ttl"
|
|
append_parm "$cfg" "max_cache_ttl" "--max-cache-ttl"
|
|
append_parm "$cfg" "pxe_prompt" "--pxe-prompt"
|
|
config_list_foreach "$cfg" "pxe_service" append_pxe_service
|
|
config_get DOMAIN "$cfg" domain
|
|
|
|
config_get_bool ADD_LOCAL_DOMAIN "$cfg" add_local_domain 1
|
|
config_get_bool ADD_LOCAL_HOSTNAME "$cfg" add_local_hostname 1
|
|
config_get ADD_LOCAL_FQDN "$cfg" add_local_fqdn ""
|
|
config_get ADD_WAN_FQDN "$cfg" add_wan_fqdn 0
|
|
|
|
if [ -z "$ADD_LOCAL_FQDN" ] ; then
|
|
# maintain support for previous UCI
|
|
ADD_LOCAL_FQDN="$ADD_LOCAL_HOSTNAME"
|
|
fi
|
|
|
|
config_get user_dhcpscript $cfg dhcpscript
|
|
if has_handler || [ -n "$user_dhcpscript" ]; then
|
|
xappend "--dhcp-script=$DHCPSCRIPT"
|
|
xappend "--script-arp"
|
|
fi
|
|
|
|
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
|
|
[ -n "$resolvfile" -a ! -e "$resolvfile" ] && touch "$resolvfile"
|
|
xappend "--resolv-file=$resolvfile"
|
|
[ "$resolvfile" = "/tmp/resolv.conf.auto" ] && localuse=1
|
|
fi
|
|
config_get_bool localuse "$cfg" localuse "$localuse"
|
|
|
|
config_get hostsfile "$cfg" dhcphostsfile
|
|
[ -e "$hostsfile" ] && xappend "--dhcp-hostsfile=$hostsfile"
|
|
|
|
local rebind
|
|
config_get_bool rebind "$cfg" rebind_protection 1
|
|
[ $rebind -gt 0 ] && {
|
|
log_once \
|
|
"DNS rebinding protection is active," \
|
|
"will discard upstream RFC1918 responses!"
|
|
xappend "--stop-dns-rebind"
|
|
|
|
local rebind_localhost
|
|
config_get_bool rebind_localhost "$cfg" rebind_localhost 0
|
|
[ $rebind_localhost -gt 0 ] && {
|
|
log_once "Allowing 127.0.0.0/8 responses"
|
|
xappend "--rebind-localhost-ok"
|
|
}
|
|
|
|
append_rebind_domain() {
|
|
log_once "Allowing RFC1918 responses for domain $1"
|
|
xappend "--rebind-domain-ok=$1"
|
|
}
|
|
|
|
config_list_foreach "$cfg" rebind_domain append_rebind_domain
|
|
}
|
|
|
|
config_get_bool dnssec "$cfg" dnssec 0
|
|
[ "$dnssec" -gt 0 ] && {
|
|
xappend "--conf-file=$TRUSTANCHORSFILE"
|
|
xappend "--dnssec"
|
|
[ -x /etc/init.d/sysntpd ] && {
|
|
if /etc/init.d/sysntpd enabled || [ "$(uci_get system.ntp.enabled)" = "1" ] ; then
|
|
[ -f "$TIMEVALIDFILE" ] || xappend "--dnssec-no-timecheck"
|
|
fi
|
|
}
|
|
append_bool "$cfg" dnsseccheckunsigned "--dnssec-check-unsigned"
|
|
}
|
|
|
|
config_get addmac "$cfg" addmac 0
|
|
[ "$addmac" != "0" ] && {
|
|
[ "$addmac" = "1" ] && addmac=
|
|
xappend "--add-mac${addmac:+="$addmac"}"
|
|
}
|
|
|
|
dhcp_option_add "$cfg" "" 0
|
|
dhcp_option_add "$cfg" "" 2
|
|
|
|
xappend "--dhcp-broadcast=tag:needs-broadcast"
|
|
|
|
xappend "--addn-hosts=$(dirname $HOSTFILE)"
|
|
|
|
config_get dnsmasqconfdir "$cfg" confdir "/tmp/dnsmasq.d"
|
|
xappend "--conf-dir=$dnsmasqconfdir"
|
|
dnsmasqconfdir="${dnsmasqconfdir%%,*}"
|
|
[ ! -d "$dnsmasqconfdir" ] && mkdir -p $dnsmasqconfdir
|
|
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 $tftp_root
|
|
}
|
|
|
|
config_foreach filter_dnsmasq host dhcp_host_add "$cfg"
|
|
echo >> $CONFIGFILE_TMP
|
|
|
|
config_get_bool dhcpbogushostname "$cfg" dhcpbogushostname 1
|
|
[ "$dhcpbogushostname" -gt 0 ] && {
|
|
xappend "--dhcp-ignore-names=tag:dhcp_bogus_hostname"
|
|
[ -r "$DHCPBOGUSHOSTNAMEFILE" ] && xappend "--conf-file=$DHCPBOGUSHOSTNAMEFILE"
|
|
}
|
|
|
|
config_foreach filter_dnsmasq boot dhcp_boot_add "$cfg"
|
|
config_foreach filter_dnsmasq mac dhcp_mac_add "$cfg"
|
|
config_foreach filter_dnsmasq tag dhcp_tag_add "$cfg"
|
|
config_foreach filter_dnsmasq vendorclass dhcp_vendorclass_add "$cfg"
|
|
config_foreach filter_dnsmasq userclass dhcp_userclass_add "$cfg"
|
|
config_foreach filter_dnsmasq circuitid dhcp_circuitid_add "$cfg"
|
|
config_foreach filter_dnsmasq remoteid dhcp_remoteid_add "$cfg"
|
|
config_foreach filter_dnsmasq subscrid dhcp_subscrid_add "$cfg"
|
|
config_foreach filter_dnsmasq match dhcp_match_add "$cfg"
|
|
config_foreach filter_dnsmasq domain dhcp_domain_add "$cfg"
|
|
config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add "$cfg"
|
|
[ -n "$BOOT" ] || config_foreach filter_dnsmasq relay dhcp_relay_add "$cfg"
|
|
|
|
echo >> $CONFIGFILE_TMP
|
|
config_foreach filter_dnsmasq srvhost dhcp_srv_add "$cfg"
|
|
config_foreach filter_dnsmasq mxhost dhcp_mx_add "$cfg"
|
|
echo >> $CONFIGFILE_TMP
|
|
|
|
config_get_bool boguspriv "$cfg" boguspriv 1
|
|
[ "$boguspriv" -gt 0 ] && {
|
|
xappend "--bogus-priv"
|
|
[ -r "$RFC6761FILE" ] && xappend "--conf-file=$RFC6761FILE"
|
|
}
|
|
|
|
if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
|
|
# Enable RA feature for when/if it is constructed,
|
|
# and RA is selected per interface pool (RA, DHCP, or both),
|
|
# but no one (should) want RA broadcast in syslog
|
|
[ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
|
|
xappend "--enable-ra"
|
|
xappend "--quiet-ra"
|
|
append_bool "$cfg" quietdhcp "--quiet-dhcp6"
|
|
|
|
elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
|
|
[ -n "$BOOT" ] || config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
|
|
fi
|
|
|
|
|
|
echo >> $CONFIGFILE_TMP
|
|
config_foreach filter_dnsmasq cname dhcp_cname_add "$cfg"
|
|
echo >> $CONFIGFILE_TMP
|
|
|
|
echo >> $CONFIGFILE_TMP
|
|
mv -f $CONFIGFILE_TMP $CONFIGFILE
|
|
mv -f $HOSTFILE_TMP $HOSTFILE
|
|
|
|
[ "$localuse" -gt 0 ] && {
|
|
rm -f /tmp/resolv.conf
|
|
[ $ADD_LOCAL_DOMAIN -eq 1 ] && [ -n "$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
|
|
}
|
|
|
|
procd_open_instance $cfg
|
|
procd_set_param command $PROG -C $CONFIGFILE -k -x /var/run/dnsmasq/dnsmasq."${cfg}".pid
|
|
procd_set_param file $CONFIGFILE
|
|
[ -n "$user_dhcpscript" ] && procd_set_param env USER_DHCPSCRIPT="$user_dhcpscript"
|
|
procd_set_param respawn
|
|
|
|
procd_add_jail dnsmasq ubus log
|
|
procd_add_jail_mount $CONFIGFILE $TRUSTANCHORSFILE $HOSTFILE $RFC6761FILE $DHCPBOGUSHOSTNAMEFILE /etc/passwd /etc/group /etc/TZ /dev/null /dev/urandom $dnsmasqconffile $dnsmasqconfdir $resolvfile $user_dhcpscript /etc/hosts /etc/ethers /sbin/hotplug-call $EXTRA_MOUNT $DHCPSCRIPT
|
|
procd_add_jail_mount_rw /var/run/dnsmasq/ $leasefile
|
|
|
|
procd_close_instance
|
|
}
|
|
|
|
dnsmasq_stop()
|
|
{
|
|
local cfg="$1"
|
|
local noresolv resolvfile localuse=0
|
|
|
|
config_get_bool noresolv "$cfg" noresolv 0
|
|
config_get resolvfile "$cfg" "resolvfile"
|
|
|
|
[ "$noresolv" = 0 -a "$resolvfile" = "/tmp/resolv.conf.auto" ] && localuse=1
|
|
config_get_bool localuse "$cfg" localuse "$localuse"
|
|
[ "$localuse" -gt 0 ] && ln -sf "/tmp/resolv.conf.auto" /tmp/resolv.conf
|
|
|
|
rm -f ${BASEDHCPSTAMPFILE}.${cfg}.*.dhcp
|
|
}
|
|
|
|
add_interface_trigger()
|
|
{
|
|
local interface ignore
|
|
|
|
config_get interface "$1" interface
|
|
config_get_bool ignore "$1" ignore 0
|
|
|
|
[ -n "$interface" -a $ignore -eq 0 ] && procd_add_interface_trigger "interface.*" "$interface" /etc/init.d/dnsmasq reload
|
|
}
|
|
|
|
service_triggers()
|
|
{
|
|
procd_add_reload_trigger "dhcp" "system"
|
|
|
|
config_load dhcp
|
|
config_foreach add_interface_trigger dhcp
|
|
config_foreach add_interface_trigger relay
|
|
}
|
|
|
|
boot()
|
|
{
|
|
BOOT=1
|
|
start "$@"
|
|
}
|
|
|
|
start_service() {
|
|
local instance="$1"
|
|
local instance_found=0
|
|
|
|
. /lib/functions/network.sh
|
|
|
|
config_cb() {
|
|
local type="$1"
|
|
local name="$2"
|
|
if [ "$type" = "dnsmasq" ]; then
|
|
if [ -n "$instance" -a "$instance" = "$name" ]; then
|
|
instance_found=1
|
|
fi
|
|
fi
|
|
}
|
|
|
|
config_load dhcp
|
|
|
|
if [ -n "$instance" ]; then
|
|
[ "$instance_found" -gt 0 ] || return
|
|
dnsmasq_start "$instance"
|
|
else
|
|
config_foreach dnsmasq_start dnsmasq
|
|
fi
|
|
}
|
|
|
|
reload_service() {
|
|
rc_procd start_service "$@"
|
|
procd_send_signal dnsmasq "$@"
|
|
}
|
|
|
|
stop_service() {
|
|
local instance="$1"
|
|
local instance_found=0
|
|
|
|
config_cb() {
|
|
local type="$1"
|
|
local name="$2"
|
|
if [ "$type" = "dnsmasq" ]; then
|
|
if [ -n "$instance" -a "$instance" = "$name" ]; then
|
|
instance_found=1
|
|
fi
|
|
fi
|
|
}
|
|
|
|
config_load dhcp
|
|
|
|
if [ -n "$instance" ]; then
|
|
[ "$instance_found" -gt 0 ] || return
|
|
dnsmasq_stop "$instance"
|
|
else
|
|
config_foreach dnsmasq_stop dnsmasq
|
|
fi
|
|
}
|