feat: add scripts/entrypoint.sh - TLS proxy and dumb-init entrypoint

Implement entrypoint script for wg-easy-ip-tls with TLS and HTTP modes, including background certificate renewal and graceful shutdown handling.

scripts/entrypoint.sh

@@ -0,0 +1,130 @@
+#!/bin/sh
+#===
+# wg-easy-ip-tls entrypoint
+# Architecture:
+# - dumb-init is PID 1 and spawns this script for proper
+#   signal forwarding and zombie reaping
+# - Nitro (wg-easy) runs on HTTP internally on NITRO_PORT
+# - If LEGO_ENABLED=true and INSECURE!=true: a Node.js TLS
+#   reverse proxy wraps Nitro on PORT (HTTPS termination)
+# - If INSECURE=true: Nitro listens directly on PORT (HTTP)
+# - A background renewal loop re-runs lego-renew.sh every
+#   LEGO_RENEW_INTERVAL seconds (default: 5 days)
+#===
+set -e
+
+CERT_FILE="/root/cert/ip/fullchain.pem"
+KEY_FILE="/root/cert/ip/privkey.pem"
+PORT="${PORT:-51821}"
+NITRO_PORT="${NITRO_PORT:-51822}"
+LEGO_ENABLED="${LEGO_ENABLED:-false}"
+INSECURE="${INSECURE:-true}"
+# Renewal interval in seconds (default 5 days = 432000s)
+LEGO_RENEW_INTERVAL="${LEGO_RENEW_INTERVAL:-432000}"
+
+SERVER_PID_FILE="/tmp/wg-easy.pid"
+PROXY_PID_FILE="/tmp/tls-proxy.pid"
+RENEWAL_PID_FILE="/tmp/lego-renewal.pid"
+
+# Graceful shutdown handler
+cleanup() {
+  echo "[entrypoint] Shutting down..."
+  if [ -f "$RENEWAL_PID_FILE" ]; then
+    PID=$(cat "$RENEWAL_PID_FILE" 2>/dev/null)
+    [ -n "$PID" ] && kill "$PID" 2>/dev/null || true
+  fi
+  if [ -f "$PROXY_PID_FILE" ]; then
+    PID=$(cat "$PROXY_PID_FILE" 2>/dev/null)
+    [ -n "$PID" ] && kill "$PID" 2>/dev/null || true
+  fi
+  if [ -f "$SERVER_PID_FILE" ]; then
+    PID=$(cat "$SERVER_PID_FILE" 2>/dev/null)
+    [ -n "$PID" ] && kill "$PID" 2>/dev/null || true
+  fi
+  exit 0
+}
+trap cleanup TERM INT
+
+if [ "$LEGO_ENABLED" = "true" ] && [ "$INSECURE" != "true" ]; then
+  # ── TLS mode ───
+  /usr/local/bin/lego-renew.sh
+
+  # Start background cert renewal loop
+  (
+    while true; do
+      sleep "$LEGO_RENEW_INTERVAL"
+      echo "[entrypoint] Running scheduled cert renewal..."
+      /usr/local/bin/lego-renew.sh && echo "[entrypoint] Cert renewal complete" || \
+        echo "[entrypoint] WARNING: cert renewal failed, will retry next cycle"
+    done
+  ) &
+  echo $! > "$RENEWAL_PID_FILE"
+
+  echo "[entrypoint] Starting wg-easy (internal HTTP on port $NITRO_PORT)..."
+  PORT="$NITRO_PORT" HOST="127.0.0.1" node /app/server/index.mjs &
+  echo $! > "$SERVER_PID_FILE"
+
+  # Wait for Nitro to be ready before starting the proxy
+  echo "[entrypoint] Waiting for internal server..."
+  i=0
+  while ! nc -z 127.0.0.1 "$NITRO_PORT" 2>/dev/null; do
+    sleep 0.5
+    i=$((i + 1))
+    if [ $i -ge 60 ]; then
+      echo "[entrypoint] ERROR: internal server did not start in 30 seconds"
+      exit 1
+    fi
+  done
+
+  echo "[entrypoint] Starting TLS proxy on port $PORT..."
+  node -e "
+  const https = require('https');
+  const http = require('http');
+  const net = require('net');
+  const fs = require('fs');
+  const cert = fs.readFileSync('$CERT_FILE');
+  const key = fs.readFileSync('$KEY_FILE');
+  const server = https.createServer({ cert, key }, (req, res) => {
+    const proxy = http.request({
+      hostname: '127.0.0.1',
+      port: $NITRO_PORT,
+      path: req.url,
+      method: req.method,
+      headers: req.headers,
+    }, (proxyRes) => {
+      res.writeHead(proxyRes.statusCode, proxyRes.headers);
+      proxyRes.pipe(res);
+    });
+    proxy.on('error', (e) => {
+      console.error('[tls-proxy] error:', e.message);
+      if (!res.headersSent) { res.writeHead(502); }
+      res.end('Bad Gateway');
+    });
+    req.pipe(proxy);
+  });
+  server.on('upgrade', (req, socket, head) => {
+    const conn = net.connect($NITRO_PORT, '127.0.0.1', () => {
+      conn.write('GET ' + req.url + ' HTTP/1.1\\r\\n' +
+        Object.entries(req.headers).map(([k,v]) => k + ': ' + v).join('\\r\\n') +
+        '\\r\\n\\r\\n');
+      if (head && head.length) conn.write(head);
+      socket.pipe(conn);
+      conn.pipe(socket);
+    });
+    conn.on('error', (e) => {
+      console.error('[tls-proxy] ws error:', e.message);
+      socket.destroy();
+    });
+  });
+  server.listen($PORT, '0.0.0.0', () => {
+    console.log('[tls-proxy] HTTPS listening on 0.0.0.0:$PORT -> http://127.0.0.1:$NITRO_PORT');
+  });
+  " &
+  echo $! > "$PROXY_PID_FILE"
+else
+  # ── HTTP mode (INSECURE=true or LEGO_ENABLED=false) ───
+  echo "[entrypoint] Starting wg-easy in HTTP mode on port $PORT..."
+  PORT="$PORT" HOST="0.0.0.0" node /app/server/index.mjs &
+  echo $! > "$SERVER_PID_FILE"
+fi
+wait