X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/cf123d2a166d297712ab7b7221af999a62643f98..f7a2edf410595e53cf4ca5d742c98f835e9435bf:/package/dnsmasq/files/dnsmasq.init?ds=inline diff --git a/package/dnsmasq/files/dnsmasq.init b/package/dnsmasq/files/dnsmasq.init index 8ac0ab638..4acba5b84 100644 --- a/package/dnsmasq/files/dnsmasq.init +++ b/package/dnsmasq/files/dnsmasq.init @@ -1,57 +1,402 @@ #!/bin/sh /etc/rc.common -# Copyright (C) 2006 OpenWrt.org +# Copyright (C) 2007 OpenWrt.org + +START=60 +DNS_SERVERS="" +DOMAIN="" + +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" +} + +append_bool() { + local section="$1" + local option="$2" + local value="$3" + local _loctmp + config_get_bool _loctmp "$section" "$option" 0 + [ $_loctmp -gt 0 ] && append args "$value" +} + +append_parm() { + local section="$1" + local option="$2" + local switch="$3" + local _loctmp + config_get _loctmp "$section" "$option" + [ -z "$_loctmp" ] && return 0 + append args "$switch $_loctmp" +} + +append_server() { + append args "-S $1" +} + +append_interface() { + local ifname=$(uci_get_state network "$1" ifname "$1") + append args "-i $ifname" +} + +append_notinterface() { + local ifname=$(uci_get_state network "$1" ifname "$1") + append args "-I $ifname" +} + +append_addnhosts() { + append args "-H $1" +} + +append_bogusnxdomain() { + append args "-B $1" +} + +dnsmasq() { + local cfg="$1" + append_bool "$cfg" authoritative "-K" + append_bool "$cfg" nodaemon "-d" + append_bool "$cfg" domainneeded "-D" + append_bool "$cfg" filterwin2k "-f" + append_bool "$cfg" nohosts "-h" + append_bool "$cfg" nonegcache "-N" + append_bool "$cfg" strictorder "-o" + append_bool "$cfg" logqueries "-q" + append_bool "$cfg" noresolv "-R" + append_bool "$cfg" localise_queries "-y" + append_bool "$cfg" readethers "-Z" + append_bool "$cfg" dbus "-1" + append_bool "$cfg" boguspriv "-b" + append_bool "$cfg" expandhosts "-E" + append_bool "$cfg" enable_tftp "--enable-tftp" + append_bool "$cfg" nonwildcard "-z" + + append_parm "$cfg" cachesize "-c" + append_parm "$cfg" dnsforwardmax "-0" + append_parm "$cfg" port "-p" + append_parm "$cfg" ednspacket_max "-P" + append_parm "$cfg" dhcpleasemax "-X" + append_parm "$cfg" "queryport" "-Q" + append_parm "$cfg" "domain" "-s" + append_parm "$cfg" "local" "-S" + config_list_foreach "$cfg" "server" append_server + config_list_foreach "$cfg" "interface" append_interface + config_list_foreach "$cfg" "notinterface" append_notinterface + config_list_foreach "$cfg" "addnhosts" append_addnhosts + config_list_foreach "$cfg" "bogusnxdomain" append_bogusnxdomain + append_parm "$cfg" "leasefile" "-l" + append_parm "$cfg" "resolvfile" "-r" + append_parm "$cfg" "tftp_root" "--tftp-root" + append_parm "$cfg" "dhcp_boot" "--dhcp-boot" + + config_get DOMAIN "$cfg" domain + + config_get_bool readethers "$cfg" readethers + [ "$readethers" = "1" ] && [ -e "/etc/ethers" ] || touch /etc/ethers + + config_get leasefile $cfg leasefile + [ -n "$leasefile" ] && [ -e "$leasefile" ] || touch "$leasefile" + config_get_bool cachelocal "$cfg" cachelocal 1 + + config_get hostsfile "$cfg" dhcphostsfile + [ -e "$hostsfile" ] && append args "--dhcp-hostsfile=$hostsfile" + + local rebind + config_get_bool rebind "$cfg" rebind_protection 1 + [ $rebind -gt 0 ] && { + logger -t dnsmasq \ + "DNS rebinding protection is active," \ + "will discard upstream RFC1918 responses!" + append args "--stop-dns-rebind" + + local rebind_localhost + config_get_bool rebind_localhost "$cfg" rebind_localhost 0 + [ $rebind_localhost -gt 0 ] && { + logger -t dnsmasq "Allowing 127.0.0.0/8 responses" + append args "--rebind-localhost-ok" + } + + append_rebind_domain() { + logger -t dnsmasq "Allowing RFC1918 responses for domain $1" + append args "--rebind-domain-ok=$1" + } + + config_list_foreach "$cfg" rebind_domain append_rebind_domain + } +} + +dhcp_subscrid_add() { + local cfg="$1" + + config_get networkid "$cfg" networkid + [ -n "$networkid" ] || return 0 + + config_get subscriberid "$cfg" subscriberid + [ -n "$subscriberid" ] || return 0 + + append args "--dhcp-subscrid=$networkid,$subscriberid" + + dhcp_option_add "$cfg" "$networkid" +} + +dhcp_remoteid_add() { + local cfg="$1" + + config_get networkid "$cfg" networkid + [ -n "$networkid" ] || return 0 + + config_get remoteid "$cfg" remoteid + [ -n "$remoteid" ] || return 0 + + append args "--dhcp-remoteid=$networkid,$remoteid" + + dhcp_option_add "$cfg" "$networkid" +} + +dhcp_circuitid_add() { + local cfg="$1" + + config_get networkid "$cfg" networkid + [ -n "$networkid" ] || return 0 + + config_get circuitid "$cfg" circuitid + [ -n "$circuitid" ] || return 0 + + append args "--dhcp-circuitid=$networkid,$circuitid" + + dhcp_option_add "$cfg" "$networkid" +} + +dhcp_userclass_add() { + local cfg="$1" + + config_get networkid "$cfg" networkid + [ -n "$networkid" ] || return 0 + + config_get userclass "$cfg" userclass + [ -n "$userclass" ] || return 0 + + append args "--dhcp-userclass=$networkid,$userclass" + + dhcp_option_add "$cfg" "$networkid" +} + +dhcp_vendorclass_add() { + local cfg="$1" + + config_get networkid "$cfg" networkid + [ -n "$networkid" ] || return 0 + + config_get vendorclass "$cfg" vendorclass + [ -n "$vendorclass" ] || return 0 + + append args "--dhcp-vendorclass=$networkid,$vendorclass" + + dhcp_option_add "$cfg" "$networkid" +} + +dhcp_host_add() { + local cfg="$1" + + config_get name "$cfg" name + + config_get networkid "$cfg" networkid + [ -n "$networkid" ] && dhcp_option_add "$cfg" "$networkid" + + config_get ip "$cfg" ip + [ -n "$ip" ] || return 0 + + macs="" + config_get mac "$cfg" mac + for m in $mac; do append macs "$m" ","; done + [ -n "$macs" ] || return 0 + + append args "--dhcp-host=$macs,${networkid:+net:$networkid,}$ip${name:+,$name}" +} + +dhcp_mac_add() { + local cfg="$1" + + config_get networkid "$cfg" networkid + [ -n "$networkid" ] || return 0 + + config_get mac "$cfg" mac + [ -n "$mac" ] || return 0 + + append args "--dhcp-mac=$networkid,$mac" + + dhcp_option_add "$cfg" "$networkid" +} + +dhcp_boot_add() { + local cfg="$1" + + config_get networkid "$cfg" networkid + + config_get filename "$cfg" filename + [ -n "$filename" ] || return 0 + + config_get servername "$cfg" servername + [ -n "$servername" ] || return 0 + + config_get serveraddress "$cfg" serveraddress + [ -n "$serveraddress" ] || return 0 + + append args "--dhcp-boot=${networkid:+net:$networkid,}$filename,$servername,$serveraddress" + + dhcp_option_add "$cfg" "$networkid" +} + + +dhcp_add() { + local cfg="$1" + config_get net "$cfg" interface + [ -n "$net" ] || return 0 + + config_get networkid "$cfg" networkid + [ -n "$networkid" ] || networkid="$net" + + config_get ifname "$net" ifname + [ -n "$ifname" ] || return 0 + + config_get dnsserver "$net" dns + [ "$cachelocal" = "0" -a -n "$dnsserver" ] && { + DNS_SERVERS="$DNS_SERVERS $dnsserver" + } + + append_bool "$cfg" ignore "-2 $ifname" && return 0 + + config_get proto "$net" proto + [ static = "$proto" ] || return 0 + + config_get ipaddr "$net" ipaddr + config_get netmask "$cfg" netmask + [ -n "$netmask" ] || config_get netmask "$net" netmask + + #check for an already active dhcp server on the interface, unless 'force' is set + config_get_bool force "$cfg" force 0 + [ $force -gt 0 ] || { + udhcpc -n -q -s /bin/true -t 1 -i $ifname >&- && { + logger -t dnsmasq \ + "found already running DHCP-server on interface '$ifname'" \ + "refusing to start, use 'option force 1' to override" + return 0 + } + } + + config_get start "$cfg" start + config_get limit "$cfg" limit + config_get leasetime "$cfg" leasetime + config_get options "$cfg" options + config_get_bool dynamicdhcp "$cfg" dynamicdhcp 1 + + leasetime="${leasetime:-12h}" + start="$(dhcp_calc "${start:-100}")" + limit="${limit:-150}" + eval "$(ipcalc.sh $ipaddr $netmask $start $limit)" + if [ "$dynamicdhcp" = "0" ]; then END="static"; fi + append args "--dhcp-range=$networkid,$START,$END,$NETMASK,$leasetime${options:+ $options}" + + dhcp_option_add "$cfg" "$networkid" +} + +dhcp_option_add() { + local cfg="$1" + local networkid="$2" + + config_get dhcp_option "$cfg" dhcp_option + for o in $dhcp_option; do + append args "-O $networkid","$o" + done + +} + +dhcp_domain_add() { + local cfg="$1" + local ip name names + + config_get names "$cfg" name + [ -n "$names" ] || return 0 + + config_get ip "$cfg" ip + [ -n "$ip" ] || return 0 + + local oIFS="$IFS"; IFS="."; set -- $ip; IFS="$oIFS" + local raddr="${4:+$4.$3.$2.$1.in-addr.arpa}" + + for name in $names; do + local fqdn="$name" + + [ "${fqdn%.*}" == "$fqdn" ] && \ + fqdn="$fqdn${DOMAIN:+.$DOMAIN}" + + append args "-A /$fqdn/$ip" + + [ -n "$raddr" ] && { + append args "--ptr-record=$raddr,$fqdn" + raddr="" + } + done +} + +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 + + local service="$srv,$target" + [ -n "$port" ] && service="$service,$port" + + append args "-W $service" +} start() { include /lib/network scan_interfaces - - # The following is to automatically configure the DHCP settings - # based on config settings. Feel free to replace all this crap - # with a simple "dnsmasq" and manage everything via the - # /etc/dnsmasq.conf config file - - [ -f /etc/dnsmasq.conf ] || exit - + config_load dhcp + args="" - iface=lan - config_get ifname "$iface" ifname - config_get proto "$iface" proto - - [ "$proto" = static ] && dhcp_enable="${dhcp_enable:-1}" - dhcp_start="${dhcp_start:-100}" - dhcp_num="${dhcp_num:-50}" - dhcp_lease="${dhcp_lease:-12h}" - - # if dhcp_enable is unset and there is a dhcp server on the network already, default to dhcp_enable=0 - [ -z "$dhcp_enable" ] && udhcpc -n -q -R -s /bin/true -i $ifname >&- && dhcp_enable="${dhcp_enable:-0}" - - # dhcp_enable=0 disables the dhcp server - ( - [ -z "$dhcp_enable" -o "$dhcp_enable" -eq 1 ] && { - # no existing DHCP server? - - # calculate settings - config_get ipaddr "$iface" ipaddr - config_get netmask "$iface" netmask - eval $(ipcalc $ipaddr $netmask ${dhcp_start:-100} ${dhcp_num:-150}) - - # and pass the args via config parser defines - echo "${dhcp_enable:+@define dhcp_enable 1}" - echo "@define netmask $NETMASK" - echo "@define start $START" - echo "@define end $END" - echo "@define lease ${dhcp_lease:-12h}" - } - - # ignore requests from wan interface - config_get wan_proto wan proto - config_get wan_ifname wan ifname - [ -z "$wan_proto" -o "$wan_proto" = "none" ] || echo "@define wan_ifname $wan_ifname" - - cat /etc/dnsmasq.conf - ) | awk -f /usr/lib/parse-config.awk | dnsmasq -C /proc/self/fd/0 + config_foreach dnsmasq dnsmasq + config_foreach dhcp_host_add host + config_foreach dhcp_boot_add boot + config_foreach dhcp_mac_add mac + config_foreach dhcp_vendorclass_add vendorclass + config_foreach dhcp_userclass_add userclass + config_foreach dhcp_circuitid_add circuitid + config_foreach dhcp_remoteid_add remoteid + config_foreach dhcp_subscrid_add subscrid + config_foreach dhcp_domain_add domain + config_foreach dhcp_srv_add srvhost + config_foreach dhcp_add dhcp + + /usr/sbin/dnsmasq $args && { + rm -f /tmp/resolv.conf + [ -n "$DOMAIN" ] && echo "search $DOMAIN" >> /tmp/resolv.conf + DNS_SERVERS="$DNS_SERVERS 127.0.0.1" + for DNS_SERVER in $DNS_SERVERS ; do + echo "nameserver $DNS_SERVER" >> /tmp/resolv.conf + done + } } stop() { + [ -f /tmp/resolv.conf ] && { + rm -f /tmp/resolv.conf + ln -s /tmp/resolv.conf.auto /tmp/resolv.conf + } killall dnsmasq + return 0 }