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wss-terminal

Apps & Automation
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Use when extracting WSS terminal connection parameters (URL, cookie, protocol type) from browser pages for wss_connect tool usage

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WSS Terminal Probe

当页面包含 Web 终端（xterm.js 等）时，按以下步骤提取 WSS 直连参数。

前置条件

  • 已通过 navigate_page 打开目标页面
  • take_snapshot 确认页面存在终端元素（.xterm、.terminal、Terminal input 等）

Step 1: 一键探测脚本

将以下 JS 复制到 evaluate_script 中执行：

() => {
  const scripts = Array.from(document.querySelectorAll('script:not([src])'));
  let wsScript = null;
  for (const s of scripts) {
    const t = s.textContent;
    if (t.match(/WebSocket|ws:\/\/|wss:\/\/|onData|sendInput/)) {
      wsScript = t;
      break;
    }
  }

  let wsUrl = null;
  if (wsScript) {
    const urlMatch = wsScript.match(/["'\x60](wss?:\/\/[^"'\x60]+)["'\x60]/);
    if (urlMatch) wsUrl = urlMatch[1];
    if (!wsUrl && wsScript.includes('location.host')) {
      const pathMatch = wsScript.match(/["'\x60](\/ws\/[^"'\x60]*)["'\x60]/);
      if (pathMatch) wsUrl = 'wss://' + location.host + pathMatch[1];
    }
  }

  return {
    wsUrl,
    hasSendInput: wsScript?.includes('sendInput') || false,
    hasBinaryPrefix: wsScript?.includes('CLIENT_CMD') || false,
    hasGottyPrefix: wsScript?.match(/['"]1['"].*send/) !== null,
    hasXterm: !!document.querySelector('.xterm'),
    scriptLength: wsScript?.length || 0
  };
}

Step 2: 判断协议类型

根据 Step 1 返回值映射：

特征协议
hasSendInput=true 或 hasBinaryPrefix=truettyd
hasGottyPrefix=truegotty
URL 包含 /wettywetty
URL 包含 /api/v1/ + execk8s
以上都不匹配generic

Step 3: 提取认证凭证

3a. Cookie 提取

  1. 先试 JS 可访问的 cookie：evaluate_script(() => document.cookie)
  2. 如果为空（httpOnly cookie），通过网络请求提取：
    • 调用 list_network_requests 获取同域请求列表
    • 选择一个成功的请求（200 状态码），调用 get_network_request(reqid=<id>)
    • 从返回的 Request Headers 中提取 Cookie 字段值
  3. 如果仍为空，检查是否有 Authorization header（Bearer token 等），用 extra_headers 传递

3b. Origin 推断

从目标 URL 提取 Origin（scheme://host[:port]）：

wss://example.com/ws/shell  →  origin = "https://example.com"
ws://10.0.0.1:8080/ws       →  origin = "http://10.0.0.1:8080"

规则：wss 对应 https，ws 对应 http。

Step 4: 连接

wss_connect(
  url=<Step1的wsUrl>,
  cookie=<Step3a的cookie>,
  protocol=<Step2的协议>,
  origin=<Step3b的origin>,
  extra_headers=<如有Authorization等额外header>,
  subprotocols=<如服务器要求特定subprotocol，如["tty"]>
)

如果返回 4001 UNAUTHORIZED 或类似认证失败：

  1. 检查 Cookie 是否完整（httpOnly cookie 是否遗漏）
  2. 检查 Origin 是否正确
  3. 尝试添加 subprotocols（部分 ttyd 服务器要求 ["tty"]）
  4. 如果仍失败，回退到 window.__wt 方式（参见 additionalContext 中的初始化脚本）

手动分析回退

如果 Step 1 的探测脚本未找到 WebSocket 代码（高度混淆/打包的 JS），则：

  1. 用 evaluate_script 获取所有 <script src> 的 URL
  2. 用 WebFetch 下载 JS bundle
  3. 搜索 WebSocket、ws://、wss:// 关键词
  4. 从上下文中识别协议格式