commit d88251a36c648f6b52aaa65f6ef9c6d839c0e6a0 parent a792413b1444a22e8d656ee66838423be4c56e5f Author: hhvn <dev@hhvn.uk> Date: Thu, 21 Apr 2022 01:21:40 +0100 Autoconfigure script for networks Diffstat:
| A | .scripts/net/autoconf | | | 95 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
1 file changed, 95 insertions(+), 0 deletions(-)
diff --git a/.scripts/net/autoconf b/.scripts/net/autoconf @@ -0,0 +1,95 @@ +#!/bin/rc + +if (!~ `{id -u} 0) { + printf 'You should probably run this script as root.\n' >[1=2] + exit 1 + +} + +cfile = /etc/ip.rc +if (test -f $cfile) { + . $cfile +} + +# Remove excess elements +ethip = $ethip(1) +wlanip = $wlanip(1) + +gateway = 192.168.1.1 +lanmask = 192.168.1.0/24 + +fn needeth { if (~ $ethip ()) { printf 'Ethernet ip: '; ethip = `$nl{head -n 1} } } +fn needwlan { if (~ $wlanip ()) { printf 'Wireless ip: '; wlanip = `$nl{head -n 1} } } +fn try { $* || exit $status(1) } +fn setup { + interface = $1 + ip = $2 + + if (!~ `{ip addr show $interface | awk '$1 ~ /^inet/ {sub(/\/.*/, ""); print $2}'} $ip) { + printf 'Adding address %s to %s...\n' $ip $interface + try ip addr add $ip/24 brd + dev $interface || exit 1 + } + + printf 'Flushing default route...\n' + try ip route flush default + printf 'Configuring default route via %s\n' $gateway + try ip route add default dev $interface + try ip route change default via $gateway dev $interface + printf 'Flushing LAN route...\n' + try ip route flush $lanmask + printf 'Configuring LAN route from %s\n' $ip + try ip route add $lanmask dev $interface + try ip route change $lanmask src $ip dev $interface + + printf 'Successfully configured %s with ip %s\n' $interface $ip + exit 0 +} + +echo Finding interfaces... +interfaces = `$nl{ip a | awk '/^[0-9]/ {gsub(/:/, ""); print $2}'} +eth = () +wlan = () + +for (i in $interfaces) { + if (~ $i en* || ~ $i eth*) { + eth = ($eth $i) + } else if (~ $i wl*) { + wlan = ($wlan $i) + } +} + +echo Checking for ethernet interfaces... +for (i in $eth) { + # Try to set the interface to up. + # If it doesn't work, `ip a` will say down. + ip link set dev $i up + + if (~ `{ip addr show $i} UP) { + printf 'Found available ethernet interface: %s\n' $i + needeth + setup $i $ethip + } +} + +echo Checking for wpa_supplicant... +if (!sv check wpa_supplicant) { + if (!test -d /etc/sv/wpa_supplicant) { + exit 1 + } + try ln -s /etc/sv/wpa_supplicant /var/service + try sv check wpa_supplicant +} + +echo Checking for wireless interfaces... +for (i in $wlan) { + ip link set dev $i up + + if (~ `{ip addr show $i} UP) { + printf 'Found available wireless interface: %s\n' $i + needwlan + setup $i $wlanip + } +} + +printf 'Could not find any interface to configure.\n' +exit 1