一键下载 flash 游戏（swf），有限地支持（1）4399（2）7k7k（3）nitrome
Per
// ==UserScript== // @name flash-game-downloader // @namespace http://tampermonkey.net/ // @version 0.0.4 // @description 一键下载 flash 游戏（swf），有限地支持（1）4399（2）7k7k（3）nitrome // @author [email protected] // @match https://www.4399.com/flash/* // @match https://s2.4399.com // @match http://www.7k7k.com/swf/*.htm* // @match http://www.nitrome.com/games/* // @require https://cdn.staticfile.org/jszip/3.7.1/jszip.min.js // @icon data:image/svg+xml;base64,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 // @grant none // @run-at document-idle // @license GPL-3.0-only // ==/UserScript== (function() { /** * 脚本级全局常量 */ FLASH_ICON = `data:image/svg+xml;base64,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`; /** * 脚本级公用函数和对象 */ /** * 元素选择器 * @param {string} selector 选择器 * @returns {Array<HTMLElement>} 元素列表 */ function $(selector) { const self = this?.querySelectorAll ? this : document; return [...self.querySelectorAll(selector)]; } /** * 安全元素选择器，直到元素存在时才返回元素列表，最多等待5秒 * @param {string} selector 选择器 * @returns {Promise<Array<HTMLElement>>} 元素列表 */ async function $$(selector) { const self = this?.querySelectorAll ? this : document; for (let i = 0; i < 10; i++) { let elems = [...self.querySelectorAll(selector)]; if (elems.length > 0) { return elems; } await new Promise(r => setTimeout(r, 500)); } throw Error(`"${selector}" not found`); } const util = { /** * 查找数组中某元素的全部位置，找不到返回空列表 * @param {Array} arr * @param {Array} elem * @returns {Array<number>} */ get_indexes: function(arr, elem) { const indexes = []; let from = 0; let i = arr.indexOf(elem, from); while (i !== -1) { indexes.push(i); from = i + 1; i = arr.indexOf(elem, from); } return indexes; }, /** * 返回子数组位置，找不到返回-1 * @param {Array<number>} arr 父数组 * @param {Array<number>} sub_arr 子数组 * @param {number} from 开始位置 * @returns {number} index */ index_of_sub_arr: function(arr, sub_arr, from) { // 如果子数组为空，则返回-1 if (sub_arr.length === 0) return -1; // 初始化当前位置为from let position = from; // 算出最大循环次数 const length = arr.length - sub_arr.length + 1; // 循环查找子数组直到没有更多 while (position < length) { // 如果当前位置的元素与子数组的第一个元素相等，则开始比较后续元素 if (arr[position] === sub_arr[0]) { // 初始化匹配标志为真 let match = true; // 循环比较后续元素，如果有不相等的，则将匹配标志设为假，并跳出循环 for (let i = 1; i < sub_arr.length; i++) { if (arr[position + i] !== sub_arr[i]) { match = false; break; } } // 如果匹配标志为真，则说明找到了子数组，返回当前位置 if (match) return position; } // 更新当前位置为下一个位置 position++; } // 如果循环结束还没有找到子数组，则返回-1 return -1; }, Socket: class Socket { /** * 创建套接字对象 * @param {Window} target 目标窗口 */ constructor(target) { if (!(target.window && (target === target.window))) { console.log(target); throw new Error(`target is not a [Window Object]`); } this.target = target; this.connected = false; this.listeners = new Set(); } get [Symbol.toStringTag]() { return "Socket"; } /** * 向目标窗口发消息 * @param {*} message */ talk(message) { if (!this.target) { throw new TypeError( `socket.target is not a window: ${this.target}` ); } this.target.postMessage(message, "*"); } /** * 添加捕获型监听器，返回实际添加的监听器 * @param {Function} listener (e: MessageEvent) => {...} * @param {boolean} once 是否在执行后自动销毁，默认 false；如为 true 则使用自动包装过的监听器 * @returns {Function} listener */ listen(listener, once=false) { if (this.listeners.has(listener)) { return; } let real_listener = listener; // 包装监听器 if (once) { const self = this; function wrapped(e) { listener(e); self.not_listen(wrapped); } real_listener = wrapped; } // 添加监听器 this.listeners.add(real_listener); window.addEventListener( "message", real_listener, true ); return real_listener; } /** * 移除socket上的捕获型监听器 * @param {Function} listener (e: MessageEvent) => {...} */ not_listen(listener) { console.log(listener); console.log( "listener delete operation:", this.listeners.delete(listener) ); window.removeEventListener("message", listener, true); } /** * 检查对方来信是否为pong消息 * @param {MessageEvent} e * @param {Function} resolve */ _on_pong(e, resolve) { // 收到pong消息 if (e.data.pong) { this.connected = true; this.listeners.forEach( listener => listener.ping ? this.not_listen(listener) : 0 ); console.log("Client: Connected!\n" + new Date()); resolve(this); } } /** * 向对方发送ping消息 * @returns {Promise<Socket>} */ _ping() { return new Promise((resolve, reject) => { // 绑定pong检查监听器 const listener = this.listen( e => this._on_pong(e, resolve) ); listener.ping = true; // 5分钟后超时 setTimeout( () => reject(new Error(`Timeout Error during receiving pong (>5min)`)), 5 * 60 * 1000 ); // 发送ping消息 this.talk({ ping: true }); }); } /** * 检查对方来信是否为ping消息 * @param {MessageEvent} e * @param {Function} resolve */ _on_ping(e, resolve) { // 收到ping消息 if (e.data.ping) { this.target = e.source; this.connected = true; this.listeners.forEach( listener => listener.pong ? this.not_listen(listener) : 0 ); console.log("Server: Connected!\n" + new Date()); // resolve 后期约状态无法回退 // 但后续代码仍可执行 resolve(this); // 回应pong消息 this.talk({ pong: true }); } } /** * 当对方来信是为ping消息时回应pong消息 * @returns {Promise<Socket>} */ _pong() { return new Promise(resolve => { // 绑定ping检查监听器 const listener = this.listen( e => this._on_ping(e, resolve) ); listener.pong = true; }); } /** * 连接至目标窗口 * @param {boolean} talk_first 是否先发送ping消息 * @param {Window} target 目标窗口 * @returns {Promise<Socket>} */ connect(talk_first) { // 先发起握手 if (talk_first) { return this._ping(); } // 后发起握手 return this._pong(); } }, /** * 以指定原因弹窗提示并抛出错误 * @param {string} reason */ raise: function(reason) { alert(reason); throw new Error(reason); }, /** * 返回一个包含计数器的迭代器, 其每次迭代值为 [index, value] * @param {Iterable} iterable * @returns */ enumerate: function* (iterable) { let i = 0; for (let value of iterable) { yield [i++, value]; } }, /** * 同步的迭代若干可迭代对象 * @param {...Iterable} iterables * @returns */ zip: function* (...iterables) { // 强制转为迭代器 const iterators = iterables.map( iterable => iterable[Symbol.iterator]() ); // 逐次迭代 while (true) { let [done, values] = base.getAllValus(iterators); if (done) { return; } if (values.length === 1) { yield values[0]; } else { yield values; } } }, /** * 返回指定范围整数生成器 * @param {number} end 如果只提供 end, 则返回 [0, end) * @param {number} end2 如果同时提供 end2, 则返回 [end, end2) * @param {number} step 步长, 可以为负数，不能为 0 * @returns */ range: function*(end, end2=null, step=1) { // 参数合法性校验 if (step === 0) { throw new RangeError("step can't be zero"); } const len = end2 - end; if (end2 && len && step && (len * step < 0)) { throw new RangeError(`[${end}, ${end2}) with step ${step} is invalid`); } // 生成范围 end2 = end2 === null ? 0 : end2; let [small, big] = [end, end2].sort((a, b) => a - b); // 开始迭代 if (step > 0) { for (let i = small; i < big; i += step) { yield i; } } else { for (let i = big; i > small; i += step) { yield i; } }; }, /** * 复制text到剪贴板 * @param {string} text * @returns */ copy_text: function(text) { // 输出到控制台和剪贴板 console.log( text.length > 20 ? text.slice(0, 21) + "..." : text ); if (!navigator.clipboard) { base.oldCopy(text); return; }; navigator.clipboard .writeText(text) .catch(_ => base.oldCopy(text)); }, /** * 复制媒体到剪贴板 * @param {Blob} blob */ copy: async function(blob) { const data = [new ClipboardItem({ [blob.type]: blob })]; try { await navigator.clipboard.write(data); console.log(`${blob.type} 成功复制到剪贴板`); } catch (err) { console.error(err.name, err.message); } }, /** * 创建并下载文件 * @param {string} file_name 文件名 * @param {ArrayBuffer | ArrayBufferView | Blob | string} content 内容 * @param {string} type 媒体类型，需要符合 MIME 标准 */ save: function(file_name, content, type="") { const blob = new Blob( [content], { type } ); const size = (blob.size / 1024).toFixed(1); console.log(`blob saved, size: ${size} kb, type: ${blob.type}`); const url = URL.createObjectURL(blob); const a = document.createElement("a"); a.download = file_name || "未命名文件"; a.href = url; a.click(); URL.revokeObjectURL(url); }, sleep: async function(delay_ms) { return new Promise( resolve => setTimeout(resolve, delay_ms) ); }, /** * 取得get参数key对应的value * @param {string} key * @returns {string} value */ get_param: function(key) { return new URL(location.href).searchParams.get(key); }, /** * 等待直到函数返回true * @param {Function} is_ok 判断条件达成与否的函数 * @param {number} timeout 最大等待秒数, 默认5000毫秒 */ wait_until: async function(is_ok, timeout=5000) { const gap = 200; let chances = parseInt(timeout / gap); chances = chances < 1 ? 1 : chances; while (! await is_ok()) { await this.sleep(200); chances -= 1; if (!chances) { break; } } }, /** * 用try移除元素 * @param {HTMLElement} element 要移除的元素 */ remove: function(element) { try { element.remove(); } catch (e) {} }, /** * 等待全部任务落定后返回值的列表 * @param {Iterable<Promise>} tasks * @returns {Promise<Array>} values */ gather: async function(tasks) { const results = await Promise.allSettled(tasks); return results .filter(result => result.value) .map(result => result.value); }, /** * 使用xhr异步GET请求目标url，返回响应体blob * @param {string} url * @returns {Promise<Blob>} blob */ xhr_get_blob: async function(url) { const xhr = new XMLHttpRequest(); xhr.open("GET", url); xhr.responseType = "blob"; return new Promise((resolve, reject) => { xhr.onload = () => { const code = xhr.status; if (code >= 200 && code <= 299) { resolve(xhr.response); } else { reject(new Error(`Network Error: ${code}`)); } } xhr.send(); }); }, /** * 加载CDN脚本 * @param {string} url */ load_web_script: async function(url) { try { // xhr+eval方式 Function( await (await this.xhr_get_blob(url)).text() )(); } catch(e) { console.error(e); // 嵌入<script>方式 const script = document.createElement("script"); script.src = url; document.body.append(script); } }, }; /** * 域名级主函数 */ /** * 启动下载 4399 flash 游戏 */ function dl_flash_4399() { /** * 域名级全局常量、变量 */ BASE_URL = "https://s2.4399.com/4399swf"; let sock; async function send_url() { const title = $(".name a")[0].textContent.trim() || "flash游戏"; const path = window._strGamePath; if (!path) util.raise( "_strGamePath 不存在，找不到游戏文件路径" ); if (!path.endsWith(".swf")) util.raise( `当前游戏不是 flash 游戏。\n游戏路径为：${path}` ); const id = "flash-dl-src"; let iframe = $(`#${id}`)[0]; if (!iframe) { iframe = document.createElement("iframe"); iframe.id = id; iframe.src = "https://s2.4399.com"; document.body.append(iframe); sock = new util.Socket(iframe.contentWindow); await sock.connect(false); } sock.talk({ flash_dl: true, url: BASE_URL + path, title, }); } function add_style() { const style = ` <style> #flash-dl-btn { text-align: center; background: url("${FLASH_ICON}"); background-repeat: no-repeat; background-position: top; width: 40px; padding-top: 30px; margin: 0 10px; float: left; display: inline; cursor: pointer; } #flash-dl-src { display: none; } <style> `; document.head.insertAdjacentHTML( "beforeend", style ); } async function add_dl_btn() { const box = (await $$("#uplayer .fr"))[0]; // 修改误导性的下载按钮文本（下载4399游戏盒子） $("#down_a")[0].textContent = "盒子"; // 新按钮 const btn = document.createElement("a"); btn.id = "flash-dl-btn"; btn.textContent = "下载"; btn.onfocus = () => btn.blur(); btn.onclick = send_url; box.insertAdjacentElement("afterbegin", btn); } (() => { console.log("enter: dl_flash"); add_style(); add_dl_btn(); })(); } /** * 执行下载 4399 flash 游戏 */ function dl_flash_4399_in_origin() { /** * @param {MessageEvent} e */ async function on_msg(e) { if (!e.data.flash_dl) return; const { url, title } = e.data; const resp = await fetch(url, { headers: { "Host": "szhong.4399.com", "X-Requested-With": "ShockwaveFlash/34.0.0.282", } }); if (!resp.ok) util.raise( `游戏下载失败，错误代码：${resp.status}，原因：${resp.statusText}` ); const blob = await resp.blob(); util.save( title.endsWith(".swf") ? title : title + ".swf", blob, "application/x-shockwave-flash" ); } (() => { console.log("enter: dl_flash_in_origin") if (window.top === window) return; const sock = new util.Socket(window.top); sock.listen(on_msg); sock.connect(true); })(); } /** * 下载 7k7k flash 游戏 */ function dl_flash_7k7k() { /** * 域名级全局常量变量 */ let swf_url; let dl_btn; const fnames = ["启动器.swf"]; const HOW_TO_PLAY = ` 【如何游玩多 SWF 文件组成的 Flash 游戏？】 1. 在你的电脑上下载并安装 python 2. 将 python 解释器目录加入环境变量 3. 在解压为文件夹的游戏目录下打开 cmd 或 powershell 4. 输入命令：python -m http.server --bind 0.0.0.0 5678 5. 回车执行上述命令 6. 用支持 Flash 的浏览器（如 [cef flash browser](https://github.com/Mzying2001/CefFlashBrowser) 访问：http://127.0.0.1:5678/启动器.swf `.replace(/ {2,}/g, ""); /** * @returns {number} */ function get_game_id() { return window?.gameInfo?.gameId || parseInt( // http://www.7k7k.com/swf/28079.htm?abc location.pathname.match(/(?<=[/])[0-9]+?(?=[.]htm)/)[0] ); } /** * @param {string | URL} url * @returns {Promise<ArrayBuffer>} */ async function fetch_as_buffer(url) { const resp = await fetch(url); console.log(resp); if (!resp.ok) util.raise(`资源获取失败：${resp.status}`); return await resp.arrayBuffer(); } /** * @param {string} fname */ function update_url(fname) { const parts = swf_url.pathname.split("/"); parts.splice(-1, 1, fname); swf_url.pathname = parts.join("/"); } /** * @param {number} game_id * @returns {Promise<ArrayBuffer>} */ async function get_swf(game_id) { const info_url = `http://www.7k7k.com/swf/game/${game_id}/?time`; const resp = await fetch(info_url); console.log(resp); if (!resp.ok) util.raise(`游戏信息查询失败：${resp.status}`); const info = await resp.json(); console.log(info); const iframe_url = info?.result?.url; console.log(iframe_url); if (!iframe_url) util.raise( `找不到游戏页面路径：<游戏信息>.result.url 不存在` ); const resp2 = await fetch(iframe_url); console.log(resp2); if (!resp2.ok) util.raise(`游戏页面获取失败：${resp2.status}`); const html = await resp2.text(); const matches = html.match(/_src_\s*?=\s*?(['"])(.+)?\1/) || html.match(/var\s+?p\s*?=\s*(['"])(.+)?\1/); console.log(matches); const swf_name = matches[2]; console.log(swf_name); if (!swf_name) { console.log(html); util.raise(`游戏路径查询失败：游戏页面中找不到 _src_ = "..."`); } swf_url = new URL(iframe_url); update_url(swf_name); return await fetch_as_buffer(swf_url); } function get_title() { return document.title.split(",")[0]; } /** * @param {ArrayBuffer} data * @returns {string} */ function get_sub_fname(data) { const bytes = new Uint8Array(data); const end = util.index_of_sub_arr( // .swf bytes, [0x2e, 0x73, 0x77, 0x66], 0 ); if (end === -1) { console.log(`找不到子文件路径：找不到 .swf 字符串`); return ""; } const begin = bytes.lastIndexOf(0, end); if (begin === -1) { console.log(`找不到子文件路径：找不到 .swf 前的 \x00`); return ""; } return new TextDecoder() .decode(bytes.subarray(begin + 1, end)) + ".swf"; } /** * @param {ArrayBuffer} swf * @param {Array<Blob>} files * @returns {Promise<void>} */ async function collect_swfs(swf, files) { const fname = get_sub_fname(swf); if (!fname) return; fnames.push(fname); update_url(fname); const new_swf = await fetch_as_buffer(swf_url); files.push(new Blob( [new_swf], { type: "application/x-shockwave-flash" } )); collect_swfs(new_swf, files); } async function download_game() { dl_btn.classList.add("disabled"); const game_id = get_game_id(); const swf = await get_swf(game_id); const files = [new Blob( [swf], { type: "application/x-shockwave-flash" } )]; await collect_swfs(swf, files); const title = get_title(); // 单文件游戏直接下载 if (files.length === 1) { util.save(title + ".swf", files[0]); return; } // 多文件游戏下载压缩包 const zip = new window.JSZip(); files.forEach((blob, i) => zip.file( fnames[i], blob, { binary: true } )); const help = new Blob([HOW_TO_PLAY]); zip.file("使用说明.txt", help, { binary: true }); // 导出 const zip_blob = await zip.generateAsync({ type: "blob" }); console.log(zip_blob); util.save(`${title}.zip`, zip_blob); dl_btn.classList.remove("disabled"); } function add_style() { const style = ` <style> #flash-dl-btn { background: url("${FLASH_ICON}"); background-repeat: no-repeat; background-position: center; width: 40px; height: 100%; cursor: pointer; } .play_header { display: flex !important; flex-direction: row; justify-content: space-between; } .disabled { filter: grayscale(75%); pointer-events: none; } <style> `; document.head.insertAdjacentHTML( "beforeend", style ); } async function add_btn() { dl_btn = document.createElement("div"); dl_btn.id = "flash-dl-btn"; dl_btn.onclick = download_game; const targets = await $$(".play_header"); const target = targets[0]; target.insertAdjacentElement("beforeend", dl_btn); } (() => { add_style(); add_btn(); })(); } /** * 下载 nitrome flash 游戏 */ function dl_flash_nitrome() { function add_style() { const style = ` <style> #flash-dl-btn { background: url("${FLASH_ICON}"); background-repeat: no-repeat; background-position: center; width: 100%; height: 70px; cursor: pointer; display: flex; flex-direction: row; justify-content: space-around; } .comment-info { flex-direction: column !important; } <style> `; document.head.insertAdjacentHTML( "beforeend", style ); } function add_btn() { const dl_btn = document.createElement("a"); // http://www.nitrome.com/games/finalninja/ const fname = location.pathname.split("/").at(-2) + ".swf"; dl_btn.download = fname; dl_btn.href = fname; dl_btn.target = "_blank"; dl_btn.id = "flash-dl-btn"; dl_btn.textContent = "下载游戏文件"; $(".comment-info")[0].insertAdjacentElement( "beforeend", dl_btn ); } function main() { add_style(); add_btn(); } setTimeout(main, 3000); } /** * 路由函数，脚本主函数入口 */ function route() { console.log("enter: route"); const host = location.hostname; switch (host) { case "www.4399.com": dl_flash_4399(); break; case "s2.4399.com": dl_flash_4399_in_origin(); break; case "www.7k7k.com": dl_flash_7k7k(); break; case "www.nitrome.com": dl_flash_nitrome(); break; default: console.log(`不受支持的域名：${host}`); break; } } setTimeout(route, 500); /** * 更新日志 * --- * 更新日期：2023/4/28 * 更新版本：0.0.1 * - 完成第一版 4399 flash 文件下载脚本 * --- * 更新日期：2023/5/18 * 更新版本：0.0.2 * - 脚本名称变更 * - 新增支持 7k7k * --- * 更新日期：2023/5/19 * 更新版本：0.0.3 * - 7k7k 游戏文件地址搜索增强 * --- * 更新日期：2023/5/19 * 更新版本：0.0.4 * - 新增支持 nitrome */ })();
