23 lines
1 KiB
Bash
Executable file
23 lines
1 KiB
Bash
Executable file
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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set -e
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[[ $UID == 0 ]] || { echo "You must be root to run this."; exit 1; }
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exec 3<>/dev/tcp/demo.wireguard.com/42912
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privatekey="$(wg genkey)"
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wg pubkey <<<"$privatekey" >&3
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IFS=: read -r status server_pubkey server_port internal_ip <&3
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[[ $status == OK ]]
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ip link del dev wg0 2>/dev/null || true
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ip link add dev wg0 type wireguard
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wg set wg0 private-key <(echo "$privatekey") peer "$server_pubkey" allowed-ips 0.0.0.0/0 endpoint "demo.wireguard.com:$server_port" persistent-keepalive 25
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ip address add "$internal_ip"/24 dev wg0
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ip link set up dev wg0
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if [ "$1" == "default-route" ]; then
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host="$(wg show wg0 endpoints | sed -n 's/.*\t\(.*\):.*/\1/p')"
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ip route add $(ip route get $host | sed '/ via [0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}/{s/^\(.* via [0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\).*/\1/}' | head -n 1) 2>/dev/null || true
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ip route add 0/1 dev wg0
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ip route add 128/1 dev wg0
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fi
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