ADD_LOCAL_DOMAIN=1
ADD_LOCAL_HOSTNAME=1
+ADD_WAN_FQDN=0
+ADD_LOCAL_FQDN=""
BASECONFIGFILE="/var/etc/dnsmasq.conf"
BASEHOSTFILE="/tmp/hosts/dhcp"
TIMEVALIDFILE="/var/state/dnsmasqsec"
BASEDHCPSTAMPFILE="/var/run/dnsmasq"
+DNSMASQ_DHCP_VER=4
+
xappend() {
local value="$1"
}
hex_to_hostid() {
- local var="$1"
- local hex="${2#0x}" # strip optional "0x" prefix
+ local var="$1"
+ local hex="${2#0x}" # strip optional "0x" prefix
- if [ -n "${hex//[0-9a-fA-F]/}" ]; then
- # is invalid hex literal
- return 1
- fi
+ if [ -n "${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))
- )"
+ # convert into host id
+ export "$var=$(
+ printf "%0x:%0x" \
+ $(((0x$hex >> 16) % 65536)) \
+ $(( 0x$hex % 65536))
+ )"
- return 0
+ return 0
}
dhcp_calc() {
}
dhcp_circuitid_add() {
+ # TODO: DHCPV6 does not have circuitid; catch "option6:"
local cfg="$1"
config_get networkid "$cfg" networkid
}
dhcp_vendorclass_add() {
+ # TODO: DHCPV6 vendor class has stricter definitions; catch? fixup?
local cfg="$1"
config_get networkid "$cfg" networkid
dhcp_host_add() {
local cfg="$1"
+ local hosttag nametime addrs
config_get_bool force "$cfg" force 0
config_get name "$cfg" name
config_get ip "$cfg" ip
- [ -n "$ip" -o -n "$name" ] || return 0
+ 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" ] && {
}
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
macs=""
for m in $mac; do append macs "$m" ","; done
- else
- # --dhcp-host=lap,192.168.0.199
+ 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="$name"
name=""
fi
- config_get tag "$cfg" tag
-
- if [ "$DHCPv6CAPABLE" -eq 1 ]; then
- config_get hostid "$cfg" hostid
- if [ -n "$hostid" ]; then
+ if [ -n "$hostid" ]; then
hex_to_hostid hostid "$hostid"
- fi
fi
config_get_bool broadcast "$cfg" broadcast 0
- [ "$broadcast" = "0" ] && broadcast=
-
config_get leasetime "$cfg" leasetime
- xappend "--dhcp-host=$macs${networkid:+,net:$networkid}${broadcast:+,set:needs-broadcast}${tag:+,set:$tag}${ip:+,$ip${hostid:+,[::$hostid]}}${name:+,$name}${leasetime:+,$leasetime}"
+ [ "$broadcast" = "0" ] && broadcast= || broadcast=",set:needs-broadcast"
+
+ hosttag="${networkid:+,set:${networkid}}${tag:+,set:${tag}}$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
+ xappend "--interface-name=$ifdashname.$routername.$DOMAIN,$ifname"
+ fi
+
+ xappend "--interface-name=$routername.$DOMAIN,$ifname"
+ fi
+
+ # All IP addresses discovered by dnsmasq will be labeled (except fe80::)
+ xappend "--interface-name=$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"
}
dhcp_boot_add() {
+ # TODO: BOOTURL is different between DHCPv4 and DHCPv6
local cfg="$1"
config_get networkid "$cfg" networkid
dhcp_add() {
local cfg="$1"
+ local dhcp6range="::"
+ local nettag
+
config_get net "$cfg" interface
[ -n "$net" ] || return 0
- config_get dhcpv4 "$cfg" dhcpv4
- [ "$dhcpv4" != "disabled" ] || return 0
-
config_get networkid "$cfg" networkid
[ -n "$networkid" ] || networkid="$net"
DNS_SERVERS="$DNS_SERVERS $dnsserver"
}
- append_bool "$cfg" ignore "--no-dhcp-interface=$ifname" && return 0
+ append_bool "$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
+ }
# Do not support non-static interfaces for now
[ static = "$proto" ] || return 0
config_get_bool force "$cfg" force 0
[ $force -gt 0 ] || dhcp_check "$ifname" || return 0
- config_get start "$cfg" start
- config_get limit "$cfg" limit
- config_get leasetime "$cfg" leasetime
+ config_get start "$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
- leasetime="${leasetime:-12h}"
- start="$(dhcp_calc "${start:-100}")"
- limit="${limit:-150}"
- [ "$limit" -gt 0 ] && limit=$((limit-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 "$cfg" ra_preference
+
+ # Put the router host name on this DHCP served interface address(es)
+ dhcp_this_host_add "$net" "$ifname" "$ADD_LOCAL_FQDN"
+
+ start="$( dhcp_calc "$start" )"
+ 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"; fi
- xappend "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}"
+
+ if [ "$dynamicdhcp" = "0" ] ; then
+ END="static"
+ dhcp6range="::,static"
+ else
+ dhcp6range="::1000,::ffff"
+ fi
+
+
+ if [ "$dhcpv4" != "disabled" ] ; then
+ xappend "--dhcp-range=$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,$leasetime"
+ ;;
+ esac
+ fi
dhcp_option_add "$cfg" "$networkid"
}
dhcp_option_add() {
+ # NOTE: dnsmasq has explicit "option6:" prefix for DHCPv6 so no collisions
local cfg="$1"
local networkid="$2"
local force="$3"
$PROG --version | grep -osqE "^Compile time options:.* DHCPv6( |$)" && 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
+ /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
+
+
append_bool "$cfg" authoritative "--dhcp-authoritative"
append_bool "$cfg" nodaemon "--no-daemon"
append_bool "$cfg" domainneeded "--domain-needed"
append_bool "$cfg" allservers "--all-servers"
append_bool "$cfg" noping "--no-ping"
+ append_parm "$cfg" logfacility "--log-facility"
append_parm "$cfg" dhcpscript "--dhcp-script"
append_parm "$cfg" cachesize "--cache-size"
append_parm "$cfg" dnsforwardmax "--dns-forward-max"
config_get_bool ADD_LOCAL_DOMAIN "$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="$ADD_LOCAL_HOSTNAME"
+ fi
config_get_bool readethers "$cfg" readethers
[ "$readethers" = "1" -a \! -e "/etc/ethers" ] && touch /etc/ethers
xappend "--dhcp-broadcast=tag:needs-broadcast"
- xappend "--addn-hosts=$HOSTFILE"
+ xappend "--addn-hosts=$(dirname $HOSTFILE)"
config_get dnsmasqconfdir "$cfg" confdir "/tmp/dnsmasq.d"
[ ! -d "$dnsmasqconfdir" ] && mkdir -p $dnsmasqconfdir
config_foreach filter_dnsmasq hostrecord dhcp_hostrecord_add "$cfg"
config_foreach filter_dnsmasq relay dhcp_relay_add "$cfg"
- # add own hostname
- [ $ADD_LOCAL_HOSTNAME -eq 1 ] && {
- local lanaddr lanaddr6
- local ulaprefix="$(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 >> $CONFIGFILE_TMP
config_foreach filter_dnsmasq srvhost dhcp_srv_add "$cfg"
config_foreach filter_dnsmasq mxhost dhcp_mx_add "$cfg"
echo >> $CONFIGFILE_TMP
- config_get odhcpd_is_active odhcpd maindhcp
- if [ "$odhcpd_is_active" != "1" ]; then
+
+ if [ "$DNSMASQ_DHCP_VER" -gt 4 ] ; then
+ # Enable RA feature for when/if it is constructed,
+ # and RA is selected per interface pool (RA, DHCP, or both),
+ # but no one (should) want RA broadcast in syslog
+ config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
+ xappend "--enable-ra"
+ xappend "--quiet-ra"
+ append_bool "$cfg" quietdhcp "--quiet-dhcp6"
+
+ elif [ "$DNSMASQ_DHCP_VER" -gt 0 ] ; then
config_foreach filter_dnsmasq dhcp dhcp_add "$cfg"
fi
+
echo >> $CONFIGFILE_TMP
config_foreach filter_dnsmasq cname dhcp_cname_add "$cfg"
echo >> $CONFIGFILE_TMP
service_triggers()
{
- procd_add_reload_trigger "dhcp" "system"
+ procd_add_reload_trigger "dhcp"
procd_add_raw_trigger "interface.*" 2000 /etc/init.d/dnsmasq reload
}
reload_service() {
rc_procd start_service "$@"
- killall -HUP dnsmasq
return 0
}
projects / openwrt / openwrt.git / blobdiff