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- #!/bin/sh /etc/rc.common
- # Copyright (C) 2007-2012 OpenWrt.org
- START=19
- USE_PROCD=1
- PROG=/usr/sbin/dnsmasq
- ADD_LOCAL_DOMAIN=1
- ADD_LOCAL_HOSTNAME=1
- ADD_WAN_FQDN=0
- ADD_LOCAL_FQDN=""
- BASECONFIGFILE="/var/etc/dnsmasq.conf"
- BASEHOSTFILE="/tmp/hosts/dhcp"
- TRUSTANCHORSFILE="/usr/share/dnsmasq/trust-anchors.conf"
- TIMEVALIDFILE="/var/state/dnsmasqsec"
- BASEDHCPSTAMPFILE="/var/run/dnsmasq"
- DHCPBOGUSHOSTNAMEFILE="/usr/share/dnsmasq/dhcpbogushostname.conf"
- RFC6761FILE="/usr/share/dnsmasq/rfc6761.conf"
- DHCPSCRIPT="/usr/lib/dnsmasq/dhcp-script.sh"
- DNSMASQ_DHCP_VER=4
- dnsmasq_ignore_opt() {
- local opt="$1"
- if [ -z "$dnsmasq_features" ]; then
- dnsmasq_features="$(dnsmasq --version | grep -m1 'Compile time options:' | cut -d: -f2) "
- [ "${dnsmasq_features#* DHCP }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp=1
- [ "${dnsmasq_features#* DHCPv6 }" = "$dnsmasq_features" ] || dnsmasq_has_dhcp6=1
- [ "${dnsmasq_features#* DNSSEC }" = "$dnsmasq_features" ] || dnsmasq_has_dnssec=1
- [ "${dnsmasq_features#* TFTP }" = "$dnsmasq_features" ] || dnsmasq_has_tftp=1
- [ "${dnsmasq_features#* ipset }" = "$dnsmasq_features" ] || dnsmasq_has_ipset=1
- fi
- case "$opt" in
- dhcp-duid|\
- ra-param)
- [ -z "$dnsmasq_has_dhcp6" ] ;;
- dhcp-*|\
- bootp-*|\
- pxe-*)
- [ -z "$dnsmasq_has_dhcp" ] ;;
- dnssec-*|\
- trust-anchor)
- [ -z "$dnsmasq_has_dnssec" ] ;;
- tftp-*)
- [ -z "$dnsmasq_has_tftp" ] ;;
- ipset)
- [ -z "$dnsmasq_has_ipset" ] ;;
- *)
- return 1
- esac
- }
- xappend() {
- local value="${1#--}"
- local opt="${value%%=*}"
- if ! dnsmasq_ignore_opt "$opt"; then
- echo "$value" >>$CONFIGFILE_TMP
- fi
- }
- 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 % 65536))
- )"
- return 0
- }
- 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"
- }
- dhcp_check() {
- local ifname="$1"
- local stamp="${BASEDHCPSTAMPFILE_CFG}.${ifname}.dhcp"
- local rv=0
- [ -s "$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
- [ $rv -eq 1 ] && \
- logger -t dnsmasq \
- "found already running DHCP-server on interface '$ifname'" \
- "refusing to start, use 'option force 1' to override"
- echo $rv > "$stamp"
- return $rv
- }
- log_once() {
- pidof dnsmasq >/dev/null || \
- logger -t dnsmasq "$@"
- }
- has_handler() {
- local file
- for file in /etc/hotplug.d/dhcp/* /etc/hotplug.d/tftp/* /etc/hotplug.d/neigh/*; do
- [ -f "$file" ] && return 0
- done
- return 1
- }
- append_bool() {
- local section="$1"
- local option="$2"
- local value="$3"
- local default="$4"
- local _loctmp
- [ -z "$default" ] && default="0"
- config_get_bool _loctmp "$section" "$option" "$default"
- [ $_loctmp -gt 0 ] && xappend "$value"
- }
- append_parm() {
- local section="$1"
- local option="$2"
- local switch="$3"
- local default="$4"
- local _loctmp
- config_get _loctmp "$section" "$option" "$default"
- [ -z "$_loctmp" ] && return 0
- xappend "$switch=$_loctmp"
- }
- append_server() {
- xappend "--server=$1"
- }
- append_rev_server() {
- xappend "--rev-server=$1"
- }
- append_address() {
- xappend "--address=$1"
- }
- append_ipset() {
- xappend "--ipset=$1"
- }
- append_interface() {
- network_get_device ifname "$1" || ifname="$1"
- xappend "--interface=$ifname"
- }
- append_listenaddress() {
- xappend "--listen-address=$1"
- }
- append_notinterface() {
- network_get_device ifname "$1" || ifname="$1"
- xappend "--except-interface=$ifname"
- }
- append_addnhosts() {
- xappend "--addn-hosts=$1"
- }
- append_bogusnxdomain() {
- xappend "--bogus-nxdomain=$1"
- }
- append_pxe_service() {
- xappend "--pxe-service=$1"
- }
- append_interface_name() {
- xappend "--interface-name=$1,$2"
- }
- filter_dnsmasq() {
- local cfg="$1" func="$2" match_cfg="$3" found_cfg
- # use entry when no instance entry set, or if it matches
- config_get found_cfg "$cfg" "instance"
- if [ -z "$found_cfg" -o "$found_cfg" = "$match_cfg" ]; then
- $func $cfg
- fi
- }
- dhcp_subscrid_add() {
- local cfg="$1"
- config_get networkid "$cfg" networkid
- [ -n "$networkid" ] || return 0
- config_get subscriberid "$cfg" subscriberid
- [ -n "$subscriberid" ] || return 0
- xappend "--dhcp-subscrid=$networkid,$subscriberid"
- config_get_bool force "$cfg" force 0
- dhcp_option_add "$cfg" "$networkid" "$force"
- }
- dhcp_remoteid_add() {
- local cfg="$1"
- config_get networkid "$cfg" networkid
- [ -n "$networkid" ] || return 0
- config_get remoteid "$cfg" remoteid
- [ -n "$remoteid" ] || return 0
- xappend "--dhcp-remoteid=$networkid,$remoteid"
- config_get_bool force "$cfg" force 0
- dhcp_option_add "$cfg" "$networkid" "$force"
- }
- dhcp_circuitid_add() {
- # TODO: DHCPV6 does not have circuitid; catch "option6:"
- local cfg="$1"
- config_get networkid "$cfg" networkid
- [ -n "$networkid" ] || return 0
- config_get circuitid "$cfg" circuitid
- [ -n "$circuitid" ] || return 0
- xappend "--dhcp-circuitid=$networkid,$circuitid"
- config_get_bool force "$cfg" force 0
- dhcp_option_add "$cfg" "$networkid" "$force"
- }
- dhcp_userclass_add() {
- local cfg="$1"
- config_get networkid "$cfg" networkid
- [ -n "$networkid" ] || return 0
- config_get userclass "$cfg" userclass
- [ -n "$userclass" ] || return 0
- xappend "--dhcp-userclass=$networkid,$userclass"
- config_get_bool force "$cfg" force 0
- dhcp_option_add "$cfg" "$networkid" "$force"
- }
- dhcp_vendorclass_add() {
- # TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
- local cfg="$1"
- config_get networkid "$cfg" networkid
- [ -n "$networkid" ] || return 0
- config_get vendorclass "$cfg" vendorclass
- [ -n "$vendorclass" ] || return 0
- xappend "--dhcp-vendorclass=$networkid,$vendorclass"
- config_get_bool force "$cfg" force 0
- dhcp_option_add "$cfg" "$networkid" "$force"
- }
- dhcp_match_add() {
- local cfg="$1"
- config_get networkid "$cfg" networkid
- [ -n "$networkid" ] || return 0
- config_get match "$cfg" match
- [ -n "$match" ] || return 0
- xappend "--dhcp-match=$networkid,$match"
- config_get_bool force "$cfg" force 0
- dhcp_option_add "$cfg" "$networkid" "$force"
- }
- dhcp_host_add() {
- local cfg="$1"
- local hosttag nametime addrs duids macs tags
- config_get_bool force "$cfg" force 0
- 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 "$cfg" ip
- config_get hostid "$cfg" hostid
- [ -n "$ip" -o -n "$name" -o -n "$hostid" ] || return 0
- config_get_bool dns "$cfg" dns 0
- [ "$dns" = "1" -a -n "$ip" -a -n "$name" ] && {
- echo "$ip $name${DOMAIN:+.$DOMAIN}" >> $HOSTFILE_TMP
- }
- config_get mac "$cfg" mac
- config_get duid "$cfg" duid
- config_get tag "$cfg" tag
- if [ -n "$mac" ]; then
- # --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
- # many MAC are possible to track a laptop ON/OFF dock
- for m in $mac; do append macs "$m" ","; done
- fi
- if [ $DNSMASQ_DHCP_VER -eq 6 -a -n "$duid" ]; then
- # --dhcp-host=id:00:03:00:01:12:00:00:01:02:03,[::beef],lap
- # one (virtual) machine gets one DUID per RFC3315
- duids="id:${duid// */}"
- fi
- if [ -z "$macs" -a -z "$duids" ]; then
- # --dhcp-host=lap,192.168.0.199,[::beef]
- [ -n "$name" ] || return 0
- macs="$name"
- name=""
- fi
- if [ -n "$hostid" ]; then
- hex_to_hostid hostid "$hostid"
- fi
- if [ -n "$tag" ]; then
- for t in $tag; do append tags "$t" ",set:"; done
- fi
- config_get_bool broadcast "$cfg" broadcast 0
- config_get leasetime "$cfg" leasetime
- [ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
- hosttag="${networkid:+,set:${networkid}}${tags:+,set:${tags}}$broadcast"
- nametime="${name:+,$name}${leasetime:+,$leasetime}"
- if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
- addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
- xappend "--dhcp-host=$macs${duids:+,$duids}$hosttag$addrs$nametime"
- else
- xappend "--dhcp-host=$macs$hosttag${ip:+,$ip}$nametime"
- fi
- }
- dhcp_this_host_add() {
- local net="$1"
- local ifname="$2"
- local mode="$3"
- local routerstub routername ifdashname
- local lanaddr lanaddr6 lanaddrs6 ulaprefix
- if [ "$mode" -gt 0 ] ; then
- ifdashname="${ifname//./-}"
- routerstub="$( md5sum /etc/os-release )"
- routerstub="router-${routerstub// */}"
- routername="$( uci_get system @system[0] hostname $routerstub )"
- if [ "$mode" -gt 1 ] ; then
- if [ "$mode" -gt 2 ] ; then
- if [ "$mode" -gt 3 ] ; then
- append_interface_name "$ifdashname.$routername.$DOMAIN" "$ifname"
- fi
- append_interface_name "$routername.$DOMAIN" "$ifname"
- fi
- # All IP addresses discovered by dnsmasq will be labeled (except fe80::)
- append_interface_name "$routername" "$ifname"
- else
- # This uses a static host file entry for only limited addresses.
- # Use dnsmasq option "--expandhosts" to enable FQDN on host files.
- ulaprefix="$(uci_get network @globals[0] ula_prefix)"
- network_get_ipaddr lanaddr "$net"
- network_get_ipaddrs6 lanaddrs6 "$net"
- if [ -n "$lanaddr" ] ; then
- dhcp_domain_add "" "$routername" "$lanaddr"
- fi
- if [ -n "$ulaprefix" -a -n "$lanaddrs6" ] ; then
- for lanaddr6 in $lanaddrs6 ; do
- case "$lanaddr6" in
- "${ulaprefix%%:/*}"*)
- dhcp_domain_add "" "$routername" "$lanaddr6"
- ;;
- esac
- done
- fi
- fi
- fi
- }
- dhcp_tag_add() {
- # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
- local cfg="$1"
- tag="$cfg"
- [ -n "$tag" ] || return 0
- config_get_bool force "$cfg" force 0
- [ "$force" = "0" ] && force=
- config_get option "$cfg" dhcp_option
- for o in $option; do
- xappend "--dhcp-option${force:+-force}=tag:$tag,$o"
- done
- }
- dhcp_mac_add() {
- local cfg="$1"
- config_get networkid "$cfg" networkid
- [ -n "$networkid" ] || return 0
- config_get mac "$cfg" mac
- [ -n "$mac" ] || return 0
- xappend "--dhcp-mac=$networkid,$mac"
- dhcp_option_add "$cfg" "$networkid"
- }
- dhcp_boot_add() {
- # TODO: BOOTURL is different between DHCPv4 and DHCPv6
- local cfg="$1"
- config_get networkid "$cfg" networkid
- config_get filename "$cfg" filename
- [ -n "$filename" ] || return 0
- config_get servername "$cfg" servername
- config_get serveraddress "$cfg" serveraddress
- [ -n "$serveraddress" -a ! -n "$servername" ] && return 0
- xappend "--dhcp-boot=${networkid:+net:$networkid,}${filename}${servername:+,$servername}${serveraddress:+,$serveraddress}"
- config_get_bool force "$cfg" force 0
- dhcp_option_add "$cfg" "$networkid" "$force"
- }
- dhcp_add() {
- local cfg="$1"
- local dhcp6range="::"
- local nettag
- local tags
- config_get net "$cfg" interface
- [ -n "$net" ] || return 0
- config_get networkid "$cfg" networkid
- [ -n "$networkid" ] || networkid="$net"
- network_get_device ifname "$net" || return 0
- [ "$cachelocal" = "0" ] && network_get_dnsserver dnsserver "$net" && {
- DNS_SERVERS="$DNS_SERVERS $dnsserver"
- }
- append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && {
- # Many ISP do not have useful names for DHCP customers (your WAN).
- dhcp_this_host_add "$net" "$ifname" "$ADD_WAN_FQDN"
- return 0
- }
- network_get_subnet subnet "$net" || return 0
- network_get_protocol proto "$net" || return 0
- # Do not support non-static interfaces for now
- [ static = "$proto" ] || return 0
- # Override interface netmask with dhcp config if applicable
- config_get netmask "$cfg" netmask "${subnet##*/}"
- #check for an already active dhcp server on the interface, unless 'force' is set
- config_get_bool force "$cfg" force 0
- [ $force -gt 0 ] || dhcp_check "$ifname" || return 0
- config_get start "$cfg" start 100
- config_get limit "$cfg" limit 150
- config_get leasetime "$cfg" leasetime 12h
- config_get options "$cfg" options
- config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1
- config_get dhcpv4 "$cfg" dhcpv4
- config_get dhcpv6 "$cfg" dhcpv6
- config_get ra "$cfg" ra
- config_get ra_management "$cfg" ra_management
- config_get ra_preference "$cfg" ra_preference
- config_get dns "$cfg" dns
- config_list_foreach "$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
- }
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