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|
#!/usr/bin/env bash
set -euo pipefail
CONFIG_DIR="$HOME/.cache/usque"
CONFIG="$CONFIG_DIR/config.json"
TUN_DEV="tun0"
RUNTIME_DIR="${XDG_RUNTIME_DIR:-/tmp}"
PID_FILE="$RUNTIME_DIR/usque-warp.pid"
STATE_FILE="$RUNTIME_DIR/usque-warp.state"
LOG_FILE="$RUNTIME_DIR/usque-warp.log"
ensure_config() {
if [[ -f "$CONFIG" ]]; then
return
fi
echo "usque config not found."
echo "Creating $CONFIG_DIR..."
mkdir -p "$CONFIG_DIR"
echo "Registering Cloudflare WARP account..."
usque register
echo "Generating usque config..."
usque generate -o "$CONFIG"
if [[ ! -f "$CONFIG" ]]; then
echo "Failed to create config file: $CONFIG"
exit 1
fi
echo "Config created successfully."
}
remove_tun_default_routes() {
while ip route show | grep -qE "^default .*dev $TUN_DEV"; do
ROUTE=$(ip route show | grep -E "^default .*dev $TUN_DEV" | head -n1)
echo "Removing route: $ROUTE"
sudo ip route del $ROUTE || true
done
}
connect() {
ensure_config
if [[ -f "$PID_FILE" ]]; then
OLD_PID=$(cat "$PID_FILE")
if kill -0 "$OLD_PID" 2>/dev/null; then
echo "usque-warp is already running (PID $OLD_PID)"
exit 1
else
echo "Removing stale PID file..."
rm -f "$PID_FILE"
fi
fi
echo "Saving current default route..."
DEFAULT_ROUTE=$(ip route show default | grep -v "dev $TUN_DEV" | head -n1)
if [[ -z "$DEFAULT_ROUTE" ]]; then
echo "Could not determine current default route"
exit 1
fi
echo "$DEFAULT_ROUTE" > "$STATE_FILE"
echo "Starting usque..."
sudo usque nativetun -c "$CONFIG" >"$LOG_FILE" 2>&1 &
echo $! > "$PID_FILE"
echo "Waiting for MASQUE connection..."
MASQUE_IP=""
for i in {1..30}; do
MASQUE_IP=$(grep -oP 'MASQUE connection to \K[0-9.]+(?=:443)' "$LOG_FILE" 2>/dev/null || true)
if [[ -n "$MASQUE_IP" ]]; then
break
fi
sleep 1
done
if [[ -z "$MASQUE_IP" ]]; then
echo "Failed to detect MASQUE endpoint"
kill "$(cat "$PID_FILE")" 2>/dev/null || true
rm -f "$PID_FILE"
exit 1
fi
GATEWAY=$(echo "$DEFAULT_ROUTE" | awk '{for(i=1;i<=NF;i++) if($i=="via") print $(i+1)}')
INTERFACE=$(echo "$DEFAULT_ROUTE" | awk '{for(i=1;i<=NF;i++) if($i=="dev") print $(i+1)}')
if [[ -z "$GATEWAY" || -z "$INTERFACE" ]]; then
echo "Cannot determine gateway/interface"
exit 1
fi
echo "$MASQUE_IP $GATEWAY $INTERFACE" >> "$STATE_FILE"
echo "Allowing MASQUE endpoint outside tunnel..."
sudo ip route replace \
"$MASQUE_IP" \
via "$GATEWAY" \
dev "$INTERFACE"
echo "Removing old tun routes..."
remove_tun_default_routes
echo "Switching default route to tun0..."
sudo ip route add default dev "$TUN_DEV" metric 1
echo "Connected"
}
disconnect() {
echo "Disconnecting..."
echo "Removing tun routes..."
while ip route show | grep -qE "^default .*dev $TUN_DEV"; do
ROUTE=$(ip route show | grep -E "^default .*dev $TUN_DEV" | head -n1)
echo "Removing route: $ROUTE"
sudo ip route del $ROUTE || true
done
if [[ -f "$STATE_FILE" ]]; then
MASQUE_IP=$(grep -oP '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+' "$STATE_FILE" | head -n1 || true)
if [[ -n "$MASQUE_IP" ]]; then
echo "Removing MASQUE route: $MASQUE_IP"
sudo ip route del "$MASQUE_IP" 2>/dev/null || true
fi
rm -f "$STATE_FILE"
fi
if [[ -f "$PID_FILE" ]]; then
PID=$(cat "$PID_FILE")
if kill -0 "$PID" 2>/dev/null; then
echo "Stopping usque..."
sudo kill "$PID" 2>/dev/null || true
fi
rm -f "$PID_FILE"
fi
echo "Disconnected"
}
case "${1:-}" in
connect)
connect
;;
disconnect)
disconnect
;;
*)
echo "Usage: $0 {connect|disconnect}"
exit 1
;;
esac
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