48 lines
1.1 KiB
Bash
48 lines
1.1 KiB
Bash
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#!/bin/ash
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# Configuration
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device="eth0.20"
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target_ip="8.8.8.8"
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interfaces="phy0-ap0 phy1-ap0"
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mac=$(cat /sys/class/net/$device/address)
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ip_address=$(ip -4 addr show "$device" | awk '/inet / {print $2}' | cut -d/ -f1)
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interval=59
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check_ping() {
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logger -t wifi_sentinel_$mac_$ip_address "Pinging $target_ip"
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ping -c 1 -W 3 "$target_ip" >/dev/null 2>&1
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return $?
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}
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wifi_down() {
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logger -t wifi_sentinel_$mac_$ip_address "No response from $target_ip, bringing WiFi interfaces down..."
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for interface in $interfaces; do
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ip link set "$interface" down
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done
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}
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wifi_up() {
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logger -t wifi_sentinel_$mac_$ip_address "Response from $target_ip detected, starting WiFi interfaces..."
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for interface in $interfaces; do
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ip link set "$interface" up
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done
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}
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# Main loop
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wifi_is_down=0
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while true; do
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if check_ping; then
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if [ "$wifi_is_down" -eq 1 ]; then
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wifi_up
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wifi_is_down=0
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fi
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else
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if [ "$wifi_is_down" -eq 0 ]; then
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wifi_down
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wifi_is_down=1
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fi
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fi
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sleep "$interval"
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done
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