wlan2eth/bridge/nat/run-bridge-nat.sh

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#!/usr/bin/env bash
# ==============================================================================
# Config
SOURCE=${BASH_SOURCE[0]}
while [ -L "$SOURCE" ]; do
DIR=$(cd -P "$(dirname "$SOURCE")" >/dev/null 2>&1 && pwd)
SOURCE=$(readlink "$SOURCE")
[[ $SOURCE != /* ]] && SOURCE=$DIR/$SOURCE
done
DIR=$(cd -P "$(dirname "$SOURCE")" >/dev/null 2>&1 && pwd)
if [[ -f "$DIR/../../config/nat-config.sh" ]]; then
. "$DIR/../../config/nat-config.sh"
else
echo "$DIR/../../config/nat-config.sh missing!"
exit 1
fi
# Must be run as root
if [ "$(id -u)" -ne 0 ]; then
echo 'This script must be run as root.' >&2
exit 1
fi
# ==============================================================================
PREV_STATUS=""
while true; do
STATUS=$(cat /sys/class/net/$ETH_IFACE/carrier 2>/dev/null)
if [ "$STATUS" != "$PREV_STATUS" ]; then
if [ "$STATUS" == "0" ]; then
echo -e "\n----> Interface $ETH_IFACE has been unplugged."
bash "$DIR/bridge/bridge-reset.sh"
echo -e "--> Reset complete\n"
elif [ "$STATUS" == "1" ]; then
echo -e "\n----> Interface $ETH_IFACE has been plugged in."
# Clone the MAC first so that when we give the client an IP they'll know we're ready to go.
bash "$DIR/bridge/clone-client-mac.sh"
echo ""
bash "$DIR/bridge/bridge-lan.sh"
echo -e "--> Bridge complete\n"
else
echo -e "\n----> Interface $ETH_IFACE not found, doing nothing...\n"
fi
PREV_STATUS="$STATUS"
fi
sleep 1
done