69 lines
1.9 KiB
Bash
Executable File
69 lines
1.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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SOURCE=${BASH_SOURCE[0]}
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while [ -L "$SOURCE" ]; do
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DIR=$(cd -P "$(dirname "$SOURCE")" >/dev/null 2>&1 && pwd)
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SOURCE=$(readlink "$SOURCE")
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[[ $SOURCE != /* ]] && SOURCE=$DIR/$SOURCE
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done
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DIR=$(cd -P "$(dirname "$SOURCE")" >/dev/null 2>&1 && pwd)
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if [[ -f "$DIR/../../config/arp-config.sh" ]]; then
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. "$DIR/../../config/arp-config.sh"
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else
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echo "$DIR/../../config/arp-config.sh missing!"
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exit 1
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fi
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if [ "$(id -u)" -ne 0 ]; then
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echo 'This script must be run as root.' >&2
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exit 1
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fi
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if [ ! -f "/sys/class/net/$ETH_IFACE/operstate" ]; then
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echo "ERROR: $ETH_IFACE does not exist?"
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echo "File does not exist: /sys/class/net/$ETH_IFACE/operstate"
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exit 1
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fi
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EXITING=0
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function ctrl_c() {
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# Reset the interfaces
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if [ $EXITING -eq 0 ]; then # prevent running this multiple times
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EXITING=1
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echo "Cleaning up..."
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ip link set $WLAN_IFACE promisc off
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ip link set dev $ETH_IFACE down
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ip link set dev $ETH_IFACE up
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ip addr del $(/sbin/ip -4 -br addr show $WLAN_IFACE | /bin/grep -Po "\\d+\\.\\d+\\.\\d+\\.\\d+")/32 dev $ETH_IFACE
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exit
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fi
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}
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# ==============================================================================
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while ! ethtool $ETH_IFACE | grep -q "Link detected: yes"; do
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echo "Waiting for wired interface $ETH_IFACE to come up..."
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sleep 10s
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done
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# Clone our DCHP-allocated IP from wlan0 to eth0 so dhcp-helper will relay for the correct subnet
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echo "Initializing..."
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trap ctrl_c SIGINT
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trap ctrl_c SIGTERM
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ip addr add $(/sbin/ip -4 -br addr show $WLAN_IFACE | /bin/grep -Po "\\d+\\.\\d+\\.\\d+\\.\\d+")/32 dev $ETH_IFACE
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ip link set $WLAN_IFACE promisc on
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while true; do
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WLAN_IFACE_IP=$(ip -4 -br addr show $WLAN_IFACE | grep -Po "\\d+\\.\\d+\\.\\d+\\.\\d+")
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if [ -n "${WLAN_IFACE_IP}" ]; then
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break
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fi
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echo "Waiting for wireless interface $WLAN_IFACE to get an IP..."
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sleep 10s
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done
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parprouted -d $ETH_IFACE $WLAN_IFACE
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