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allow multiple nics to be configured via cmdline

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ghe0 2024-12-08 00:50:54 +02:00
parent f9781c659b
commit e4804115e2
Signed by: ghe0
GPG Key ID: 451028EE56A0FBB4
1 changed files with 32 additions and 13 deletions
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45
scripts/init_functions.sh
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@ -39,27 +39,46 @@ create_certs() {
-days 365 -subj "$subject" 2>/dev/null
}
# expects kernel param in this format: detee_net=192.168.122.140_24_192.168.122.1_1.1.1.1
setup_network() {
local settings='' ip_addr='' mask='' cidr='' gateway='' nameserver=''
settings=$(cat /proc/cmdline | grep -oE 'detee_net=[0-9a-z\_\:\.]+' | cut -d '=' -f2)
# TODO: replace with exit 0 when you are ready to force a kernel panic
setup_network_device() {
local device="$1" settings="$2" ip_addr='' mask='' cidr='' gateway=''
[[ -z "$settings" ]] && return 0
settings="${settings#detee_net=}"
ip_addr="$( echo ${settings} | cut -d'_' -f1 )"
mask="$( echo ${settings} | cut -d'_' -f2 )"
ip_addr="$( echo ${settings} | cut -d '_' -f1 )"
mask="$( echo ${settings} | cut -d '_' -f2 )"
cidr="${ip_addr}/${mask}"
gateway="$( echo ${settings} | cut -d'_' -f3 )"
nameserver="$( echo ${settings} | cut -d'_' -f4 )"
gateway="$( echo ${settings} | cut -d '_' -f3 )"
ip addr add $cidr dev eth0
ip link set eth0 up
ip addr add $cidr dev $device
ip link set $device up
ip route add default via $gateway
echo nameserver $nameserver > /etc/resolv.conf
sleep 2
ping -c 2 $gateway
}
# Expects kernel param in this format: detee_net=192.168.122.140_24_192.168.122.1_1.1.1.1
# In case the interface name is not specified, it defaults to eth0
# Supports manual device, for example: detee_net_eth1
# TODO: test if it is required to specify mac instead of device name
setup_network() {
local device_eth0_cfg='' device_cfg='' device_configs=''
# handle the default: detee_net=...
device_eth0_cfg=$(cat /proc/cmdline | grep -oE "detee_net=[0-9a-f\_\:\.]+" | cut -d '=' -f2)
[[ -z "$device_eth0_cfg" ]] || setup_network_device eth0 $device_eth0_cfg
# handle extra devices: detee_net_eth1=...
device_configs=$(cat /proc/cmdline| grep -oE "detee_net_[a-z0-9]*=[0-9a-f\_\:\.]+")
while read -r device_cfg; do
setup_network_device \
$(echo $device_cfg | cut -d '=' -f1 | cut -d '_' -f3) \
$(echo $device_cfg | cut -d '=' -f2)
done <<< "$( echo "$device_configs" )"
echo nameserver 1.1.1.1 >> /etc/resolv.conf
echo nameserver 1.0.0.1 >> /etc/resolv.conf
echo nameserver 2606:4700:4700::1111 >> /etc/resolv.conf
echo nameserver 2606:4700:4700::1001 >> /etc/resolv.conf
}
# detee_ghu stands for GitHub user and expects format detee_ghu=ghe0
github_ssh_key() {