A Cloudflare worker to get QQ group or user avatar without site refer protection

qq-avatar-worker.js

addEventListener("fetch", (event) => {
  event.respondWith(
    router(event.request).catch((err) =>
      err instanceof HttpError
        ? err.toResponse()
        : new Response(err.stack, { status: 500 })
    )
  );
});

class HttpError extends Error {
  /**
   * @param {Number} status
   * @param {String} message
   */
  constructor(status, message) {
    super(message);
    this.status = status;
  }

  toResponse() {
    return new Response(
      JSON.stringify({
        status: this.status,
        message: this.message,
        stack: this.stack,
      }),
      { status: this.status, headers: { "Content-Type": "application/json" } }
    );
  }
}

/**
 * @param {Request} request
 * @returns {Promise<Response>}
 */
async function router(request) {
  const url = new URL(request.url);

  switch (url.pathname) {
    case "/group/":
      return getGroupAvatar(url);
    case "/user/":
      return getUserAvatar(url);
    default:
      throw new HttpError(404, "Not Found");
  }
}

/**
 * @param {URL} url
 * @returns {Promise<Response>}
 */
async function getGroupAvatar(url) {
  const id = +url.searchParams.get("id");
  if (!id >= 1) {
    throw new HttpError(400, "Invalid Group ID");
  }
  return fetch(`https://p.qlogo.cn/gh/${id}/${id}/0`);
}

/**
 * @param {URL} url
 * @returns {Promise<Response>}
 */
async function getUserAvatar(url) {
  const id = +url.searchParams.get("id");
  const size = Math.min(+url.searchParams.get("size") || 640, 640);
  if (!id >= 1) {
    throw new HttpError(400, "Invalid User ID");
  }
  if (size > 640) {
    throw new HttpError(400, "Invalid Image Size, maximum to 640");
  }
  return fetch(`https://q1.qlogo.cn/g?b=qq&nk=${id}&s=${size}`);
}

qq-avatar.md

QQ头像获取

一个可以获取QQ群头像和用户头像的Cloudflare Worker, 没有源站保护, 可用于前端

演示站点

---

请求方法

群头像

• URL: /group/?id=<群号>

用户头像

• URL: /user/?id=<群号>&size=<头像尺寸>
  • 头像尺寸单位为像素(px), 最大640