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feat: Validate mac address (#277)

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Kroese 2023-12-28 21:02:50 +01:00 committed by GitHub
parent 3a4e9a165a
commit 2e1a1d644d
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 36 additions and 18 deletions
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54
src/network.sh
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@ -183,6 +183,41 @@ closeNetwork() {
ip link delete dockerbridge || true
fi
return 0
}
getInfo() {
if [ -z "$VM_NET_DEV" ]; then
# Automaticly detect the default network interface
VM_NET_DEV=$(awk '$2 == 00000000 { print $1 }' /proc/net/route)
[ -z "$VM_NET_DEV" ] && VM_NET_DEV="eth0"
fi
if [ ! -d "/sys/class/net/$VM_NET_DEV" ]; then
error "Network interface '$VM_NET_DEV' does not exist inside the container!"
error "$ADD_ERR -e \"VM_NET_DEV=NAME\" to specify another interface name." && exit 27
fi
VM_NET_MAC="${VM_NET_MAC//-/:}"
if [[ ${#VM_NET_MAC} == 12 ]]; then
m="$VM_NET_MAC"
VM_NET_MAC="${m:0:2}:${m:2:2}:${m:4:2}:${m:6:2}:${m:8:2}:${m:10:2}"
fi
if [[ ${#VM_NET_MAC} != 17 ]]; then
error "Invalid mac address: '$VM_NET_MAC', should be 12 or 17 digits long!" && exit 28
fi
GATEWAY=$(ip r | grep default | awk '{print $3}')
IP=$(ip address show dev "$VM_NET_DEV" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)
if [[ "$DEBUG" == [Yy1]* ]]; then
info "Container IP is $IP with gateway $GATEWAY on interface $VM_NET_DEV" && echo
fi
return 0
}
# ######################################
@ -211,24 +246,7 @@ fi
update-alternatives --set iptables /usr/sbin/iptables-legacy > /dev/null
update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy > /dev/null
if [ -z "$VM_NET_DEV" ]; then
# Automaticly detect the default network interface
VM_NET_DEV=$(awk '$2 == 00000000 { print $1 }' /proc/net/route)
[ -z "$VM_NET_DEV" ] && VM_NET_DEV="eth0"
fi
if [ ! -d "/sys/class/net/$VM_NET_DEV" ]; then
error "Network interface $VM_NET_DEV does not exist inside the container!"
error "$ADD_ERR -e \"VM_NET_DEV=NAME\" to specify another interface name." && exit 27
fi
VM_NET_MAC="${VM_NET_MAC//-/:}"
GATEWAY=$(ip r | grep default | awk '{print $3}')
IP=$(ip address show dev "$VM_NET_DEV" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)
if [[ "$DEBUG" == [Yy1]* ]]; then
info "Container IP is $IP with gateway $GATEWAY" && echo
fi
getInfo
if [[ "$DHCP" == [Yy1]* ]]; then