proxy.pac

// see -> https://en.wikipedia.org/wiki/Proxy_auto-config#:~:text=A%20proxy%20auto%2Dconfig%20(PAC,for%20fetching%20a%20given%20URL.

// 定义 findProxyForURL 函数，它接受初始化状态和配置文件
const findProxyForURL = (init, profiles) => (url, host) => {
  let result = init;
  const scheme = url.substr(0, url.indexOf(":"));
  do {
    result = profiles[result];
    if (typeof result === "function") {
      result = result(url, host, scheme);
    }
  } while (typeof result !== "string" || result.charCodeAt(0) === 43);
  return result;
};

// 定义代理配置文件
const proxyProfiles = {
  "+auto switch": (url, host, scheme) => {
    // 如果请求的 host 是本地地址，则直接连接
    if (/^127\.0\.0\.1$/.test(host) || /^::1$/.test(host) || /^localhost$/.test(host)) {
      return "DIRECT";
    };
    // 定义一系列的规则，如果请求的 host 符合规则，则返回对应的代理配置
    var rules = [
      { pattern: /^passport\.woa\.com$/, proxy: "+ioa-pac" },
      { pattern: /(?:^|\.)figma\.com$/, proxy: "+ioa-pac" },

      { pattern: /(?:^|\.)openai\.com$/, proxy: "+clash" },
      { pattern: /(?:^|\.)sentry\.io$/, proxy: "+clash" },
      { pattern: /(?:^|\.)auth0\.com$/, proxy: "+clash" },
      { pattern: /(?:^|\.)bing\.com$/, proxy: "+clash" },
      { pattern: /(?:^|\.)live\.com$/, proxy: "+clash" },
      { pattern: /(?:^|\.)office\.net$/, proxy: "+clash" },
      { pattern: /(?:^|\.)netflix\.com$/, proxy: "+clash" },
      { pattern: /^glados\.network$/, proxy: "+clash" },
      { pattern: /^bard\.google\.com$/, proxy: "+clash" },

      { pattern: /(?:^|\.)tencent\.com$/, proxy: "+whistle" },
      { pattern: /(?:^|\.)woa\.com$/, proxy: "+whistle" },
      { pattern: /(?:^|\.)tencentcloud\.com$/, proxy: "+whistle" },
      { pattern: /(?:^|\.)qq\.com$/, proxy: "+whistle" },
      { pattern: /(?:^|\.)tencent-cloud\./, proxy: "+whistle" },
      { pattern: /(?:^|\.)cloud\.tencent\./, proxy: "+whistle" },
      { pattern: /^oa\.com$/, proxy: "+whistle" },
      { pattern: /^static\.cloudcachetci\.com$/, proxy: "+whistle" },
      { pattern: /^cloudcache\.tencent.*\./, proxy: "+whistle" },
      { pattern: /^imgcache\.qq\./, proxy: "+whistle" }
    ];

    // 使用 find 方法查找第一个匹配的规则
    const rule = rules.find(r => r.pattern.test(host));

    return rule ? rule.proxy : "+ioa-pac";
  },
  "+clash": (url, host, scheme) => {
    return "PROXY 127.0.0.1:7890";
  },
  "+ioa-pac": (url, host, scheme) => {
    return "PROXY 127.0.0.1:12639";
  },
  "+whistle": (url, host, scheme) => {
    return "PROXY 127.0.0.1:8899";
  }
};

// 自动切流模式
const pacFunction = findProxyForURL("+auto switch", proxyProfiles);

function FindProxyForURL(url, host) {
  return pacFunction(url, host);
}