diff options
Diffstat (limited to 'package/dnsmasq/files/dnsmasq.init')
| -rw-r--r-- | package/dnsmasq/files/dnsmasq.init | 96 |
1 files changed, 54 insertions, 42 deletions
diff --git a/package/dnsmasq/files/dnsmasq.init b/package/dnsmasq/files/dnsmasq.init index 5e72fd014f..52973d4ca0 100644 --- a/package/dnsmasq/files/dnsmasq.init +++ b/package/dnsmasq/files/dnsmasq.init @@ -2,55 +2,67 @@ # Copyright (C) 2006 OpenWrt.org START=60 -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 + +dhcp_calc() { + local ip="$1" + local res=0 - args="" - iface=lan - config_get ifname "$iface" ifname - config_get proto "$iface" proto + while [ -n "$ip" ]; do + part="${ip%%.*}" + res="$(($res * 256))" + res="$(($res + $part))" + [ "${ip%.*}" != "$ip" ] && ip="${ip#*.}" || ip= + done + echo "$res" +} + +dhcp_add() { + local cfg="$1" + + config_get net "$cfg" interface + [ -n "$net" ] || return 0 - [ "$proto" = static ] && dhcp_enable="${dhcp_enable:-1}" - dhcp_start="${dhcp_start:-100}" - dhcp_num="${dhcp_num:-50}" - dhcp_lease="${dhcp_lease:-12h}" + config_get ifname "$net" ifname + [ -n "$ifname" ] || return 0 - # 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}" + config_get_bool ignore "$cfg" ignore + [ "$ignore" -gt 0 ] && { + append args "-I $ifname" + return 0 + } - # dhcp_enable=0 disables the dhcp server - ( - [ -z "$dhcp_enable" -o "$dhcp_enable" -eq 1 ] && { - # no existing DHCP server? + config_get proto "$net" proto + [ static = "$proto" ] || return 0 - # calculate settings - config_get ipaddr "$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 ${dhcp_lease:-12h}" - } + config_get ipaddr "$net" ipaddr + 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 -R -s /bin/true -i $ifname >&- && return 0 + } - # ignore requests from wan interface - config_get wan_proto wan proto - config_get wan_ifname wan ifname - [ -z "$wan_proto" -o "$wan_proto" = "none" ] || echo "@define wan_ifname $wan_ifname" + config_get start "$cfg" start + config_get end "$cfg" end + config_get leasetime "$cfg" leasetime + + leasetime="${leasetime:-12h}" + start="$(dhcp_calc "${start:-100}")" + end="$((${end:-150} + 1))" + eval "$(ipcalc.sh $ipaddr $netmask $start $end)" + append args "-F $START,$END,$NETMASK,$leasetime" +} + +start() { + include /lib/network + scan_interfaces + config_load dhcp + + args="" + config_foreach dhcp_add dhcp - cat /etc/dnsmasq.conf - ) | awk -f /lib/config/template.awk | dnsmasq -C /proc/self/fd/0 && { + dnsmasq $args && { rm -f /tmp/resolv.conf cat > /tmp/resolv.conf <<EOF nameserver 127.0.0.1 |