包含多重防护、可上传图片的摄像头伪装，并提供“一键复制题库”的辅助功能。
// ==UserScript==
// @name 华为云在线考试助手 (V1.3 纯净防护版)
// @namespace http://tampermonkey.net/
// @version 1.3.0
// @description 包含多重防护、可上传图片的摄像头伪装，并提供“一键复制题库”的辅助功能。
// @author 妖火id31944
// @match https://*.huaweicloud.com/*
// @grant unsafeWindow
// @grant GM_setClipboard
// @run-at document-start
// @license MIT
// ==/UserScript==
(function() {
'use strict';
/*
* ===================================================================================
* P1: 核心防护模块 (Core Protection Module)
* 职责: 破解平台的防作弊机制，为用户提供一个安全的考试环境。
* - multiLayerVideoProtection: 强制静音所有用于监控的视频流。
* - antiScreenSwitch: 屏蔽切屏、窗口失焦等事件监听，防止系统检测到用户离开考试页面。
* ===================================================================================
*/
(function multiLayerVideoProtection() {
if (!window.HTMLVideoElement) return;
// 策略1: 覆写 play 方法
(function patchPlayMethod() {
const originalPlay = HTMLVideoElement.prototype.play;
HTMLVideoElement.prototype.play = function(...args) {
if (this.srcObject instanceof MediaStream) { this.muted = true; }
return originalPlay.apply(this, args);
};
})();
// 策略2: 覆写 srcObject setter
(function patchSrcObject() {
const videoProto = HTMLVideoElement.prototype;
const originalSrcObjectDescriptor = Object.getOwnPropertyDescriptor(videoProto, 'srcObject');
if (!originalSrcObjectDescriptor || typeof originalSrcObjectDescriptor.set !== 'function') { return; }
Object.defineProperty(videoProto, 'srcObject', {
...originalSrcObjectDescriptor,
set: function(stream) { if (stream instanceof MediaStream && stream.getVideoTracks().length > 0) { this.muted = true; } return originalSrcObjectDescriptor.set.call(this, stream); }
});
})();
// 策略3: 覆写 muted setter
(function patchMutedProperty() {
const videoProto = HTMLVideoElement.prototype;
const originalMutedDescriptor = Object.getOwnPropertyDescriptor(videoProto, 'muted');
if (!originalMutedDescriptor || typeof originalMutedDescriptor.set !== 'function') { return; }
Object.defineProperty(videoProto, 'muted', {
...originalMutedDescriptor,
set: function(value) { if (this.srcObject instanceof MediaStream && this.srcObject.getVideoTracks().length > 0) { return originalMutedDescriptor.set.call(this, true); } return originalMutedDescriptor.set.call(this, value); }
});
})();
// 策略4: DOM 变动监听，处理动态加载的 video 元素
(function setupDOMWatcher() {
const processVideoElement = (video) => { if (video.tagName === 'VIDEO') { try { video.muted = true; } catch(e){} video.addEventListener('loadstart', () => { video.muted = true; }); video.addEventListener('canplay', () => { video.muted = true; }); } };
document.querySelectorAll('video').forEach(processVideoElement);
const observer = new MutationObserver(mutations => { mutations.forEach(mutation => { mutation.addedNodes.forEach(node => { if (node.nodeType === Node.ELEMENT_NODE) { if (node.tagName === 'VIDEO') { processVideoElement(node); } else if (node.querySelectorAll) { node.querySelectorAll('video').forEach(processVideoElement); } } }); }); });
if (document.body) { observer.observe(document.body, { childList: true, subtree: true }); } else { document.addEventListener('DOMContentLoaded', () => { observer.observe(document.body, { childList: true, subtree: true }); }); }
})();
})();
(function antiScreenSwitch() {
const window = unsafeWindow; if (!window) return;
const blackList = new Set(["visibilitychange", "blur", "pagehide", "mouseleave"]);
function patchAddEventListener(obj) {
if (!obj || !obj.addEventListener) return;
obj._addEventListener = obj.addEventListener;
obj.addEventListener = (...args) => { if (blackList.has(args[0])) { console.log(`[防护模块] 已屏蔽对事件 '${args[0]}' 的监听。`); return; } return obj._addEventListener(...args); };
}
patchAddEventListener(window);
patchAddEventListener(document);
Object.defineProperties(document, {
hidden: { value: false, configurable: true }, webkitHidden: { value: false, configurable: true },
visibilityState: { value: "visible", configurable: true }, webkitVisibilityState: { value: "visible", configurable: true },
hasFocus: { value: () => true, configurable: true }
});
})();
/*
* ===================================================================================
* P2: 统一UI与摄像头伪装模块 (Unified UI & Webcam Spoofing Module)
* 职责: 创建用户操作界面，并提供核心的摄像头伪装功能。
* - createFloatingWindow: 构建可拖动的悬浮窗UI。
* - ensureWebcamHook: 覆写 navigator.mediaDevices.getUserMedia，当启用伪装时，返回由Canvas生成的虚假视频流。
* ===================================================================================
*/
(function unifiedUIAndWebcam() {
const STORAGE_KEY_SPOOF = 'exam_helper_spoof_enabled';
const STORAGE_KEY_IMG = 'exam_helper_fake_image_base64';
let isWebcamSpoofingEnabled = localStorage.getItem(STORAGE_KEY_SPOOF) === 'true';
let userImageDataBase64 = localStorage.getItem(STORAGE_KEY_IMG) || null;
let cachedMediaStream = null;
let animationInterval = null;
const createFakeStream = () => new Promise(async (resolve) => {
if (cachedMediaStream) return resolve(cachedMediaStream);
const canvas = document.createElement('canvas'); canvas.width = 640; canvas.height = 480;
const ctx = canvas.getContext('2d', { willReadFrequently: true });
const loadedImg = await new Promise(resolveImg => {
if (userImageDataBase64) { const img = new Image(); img.onload = () => resolveImg(img); img.onerror = () => resolveImg(null); img.src = userImageDataBase64; } else { resolveImg(null); }
});
if (!loadedImg) { ctx.fillStyle = '#333'; ctx.fillRect(0, 0, canvas.width, canvas.height); ctx.fillStyle = 'white'; ctx.font = '20px Arial'; ctx.textAlign = 'center'; ctx.fillText('请上传照片', canvas.width / 2, canvas.height / 2); }
if (animationInterval) clearInterval(animationInterval);
animationInterval = setInterval(() => { if (loadedImg) { ctx.drawImage(loadedImg, 0, 0, canvas.width, canvas.height); } }, 100);
cachedMediaStream = canvas.captureStream(10);
resolve(cachedMediaStream);
});
function ensureWebcamHook() {
if (!navigator.mediaDevices) navigator.mediaDevices = {};
if (navigator.mediaDevices.getUserMedia.isPatchedByHelper) return;
const originalGetUserMedia = navigator.mediaDevices.getUserMedia;
navigator.mediaDevices.getUserMedia = async function(constraints) {
if (isWebcamSpoofingEnabled && constraints?.video) { console.log("[摄像头模块] 伪装已激活，返回虚假视频流。"); const fakeStream = await createFakeStream(); return fakeStream ? fakeStream : originalGetUserMedia.apply(this, [constraints]); }
return originalGetUserMedia.apply(this, [constraints]);
};
navigator.mediaDevices.getUserMedia.isPatchedByHelper = true;
}
function createFloatingWindow() {
if (document.getElementById('exam-helper-container')) return;
const container = document.createElement('div'); container.id = 'exam-helper-container';
const header = document.createElement('div'); const floatingWindowBody = document.createElement('div'); floatingWindowBody.id = 'floating-window-body';
const spoofButton = document.createElement('button'); const statusText = document.createElement('p');
const fileInput = document.createElement('input'); const uploadLabel = document.createElement('label');
function updateSpoofButton() { spoofButton.innerText = `摄像头伪装: ${isWebcamSpoofingEnabled ? '已开启' : '已关闭'}`; spoofButton.style.backgroundColor = isWebcamSpoofingEnabled ? '#dc3545' : '#6c757d'; }
spoofButton.onclick = () => { isWebcamSpoofingEnabled = !isWebcamSpoofingEnabled; localStorage.setItem(STORAGE_KEY_SPOOF, isWebcamSpoofingEnabled); updateSpoofButton(); if (!isWebcamSpoofingEnabled) { if (animationInterval) clearInterval(animationInterval); cachedMediaStream = null; } };
Object.assign(spoofButton.style, { color: 'white', padding: '8px 12px', borderRadius: '5px', cursor: 'pointer', border: 'none', display: 'block', width: '100%', marginBottom: '10px', transition: 'background-color 0.3s' });
header.textContent = '华为云考试助手V1.3'; statusText.textContent = userImageDataBase64 ? '状态: 已加载照片' : '状态: 未上传照片'; statusText.style.cssText = 'text-align: center; font-size: 12px; color: #555; margin: 0;';
fileInput.type = 'file'; fileInput.accept = 'image/*'; fileInput.id = 'fake-cam-upload'; fileInput.style.display = 'none';
uploadLabel.htmlFor = 'fake-cam-upload'; uploadLabel.textContent = '选择/更换照片';
Object.assign(uploadLabel.style, { display: 'block', textAlign: 'center', backgroundColor: '#007bff', color: 'white', padding: '8px 12px', borderRadius: '5px', cursor: 'pointer', marginTop: '10px', transition: 'background-color 0.3s' });
floatingWindowBody.append(spoofButton, statusText, fileInput, uploadLabel);
container.append(header, floatingWindowBody); document.body.appendChild(container); updateSpoofButton();
fileInput.addEventListener('change', (event) => {
const file = event.target.files?.[0]; if (!file) return;
const reader = new FileReader();
reader.onload = (e) => { userImageDataBase64 = e.target.result; localStorage.setItem(STORAGE_KEY_IMG, userImageDataBase64); statusText.textContent = '状态: 照片已更新!'; cachedMediaStream = null; };
reader.readAsDataURL(file);
});
Object.assign(container.style, { position: 'fixed', top: '20px', right: '20px', zIndex: '99999', backgroundColor: '#fff', border: '1px solid #ccc', borderRadius: '8px', boxShadow: '0 4px 12px rgba(0,0,0,0.2)', minWidth: '220px', fontFamily: 'sans-serif' });
Object.assign(header.style, { padding: '10px', backgroundColor: '#f0f0f0', cursor: 'move', borderBottom: '1px solid #ccc', borderTopLeftRadius: '8px', borderTopRightRadius: '8px', fontWeight: 'bold', userSelect: 'none', textAlign: 'center' });
Object.assign(floatingWindowBody.style, { padding: '12px' });
let isDragging = false, offset = { x: 0, y: 0 };
header.onmousedown = (e) => { isDragging = true; offset = { x: e.clientX - container.offsetLeft, y: e.clientY - container.offsetTop }; container.style.right = 'auto'; };
document.onmousemove = (e) => { if (isDragging) { container.style.left = `${e.clientX - offset.x}px`; container.style.top = `${e.clientY - offset.y}px`; } };
document.onmouseup = () => { isDragging = false; };
}
ensureWebcamHook();
(function spaNavigationHandler() { const wrap = (m) => { const o = history[m]; history[m] = function(...a) { const r = o.apply(this, a); window.dispatchEvent(new Event(m.toLowerCase())); return r; }; }; wrap('pushState'); wrap('replaceState'); const reapply = () => { setTimeout(ensureWebcamHook, 100); }; window.addEventListener('popstate', reapply); window.addEventListener('pushstate', reapply); window.addEventListener('replacestate', reapply); })();
if (document.readyState === 'loading') { window.addEventListener('DOMContentLoaded', createFloatingWindow); } else { createFloatingWindow(); }
})();
/*
* ===================================================================================
* P3: 题库导出工具模块 (Question Exporter Module)
* 职责: 通过劫持 XMLHttpRequest，捕获试卷数据，并提供一个“一键复制题库”的按钮到UI上，
* 以便用户可以手动复制所有题目和选项。
* ===================================================================================
*/
(function questionExporter() {
const targetUrlPart = '/svc/innovation/userapi/exam2d/so/servlet/getExamPaper';
const originalXhrSend = XMLHttpRequest.prototype.send;
/**
* 将题目JSON数据格式化为易于阅读的文本。
* @param {Array<Object>} questions - 题目对象数组。
* @returns {string} - 格式化后的纯文本题库。
*/
function formatQuestions(questions) {
return questions.map((q, index) => {
let typeStr = q.type === 0 ? '单选题' : q.type === 1 ? '多选题' : q.type === 2 ? '判断题' : '未知题';
let questionText = `${index + 1}. [${typeStr}] ${q.content ? q.content.trim() : '无题干'}\n`;
if (q.options?.length > 0) {
questionText += q.options.map(opt => ` ${opt.optionOrder ? opt.optionOrder + '. ' : '- '}${opt.optionContent ? opt.optionContent.trim() : '无选项内容'}`).join('\n');
}
return questionText;
}).join('\n\n');
}
/**
* 向UI面板添加“一键复制题库”按钮。
* @param {string} formattedText - 已格式化好的题库文本。
*/
function addCopyToPanel(formattedText) {
const floatingWindowBody = document.getElementById('floating-window-body');
// 如果按钮已存在，则不重复添加
if (!floatingWindowBody || document.getElementById('copy-questions-btn')) return;
const button = document.createElement('button');
button.id = 'copy-questions-btn';
button.innerText = '一键复制题库';
Object.assign(button.style, {
backgroundColor: '#28a745', color: 'white', padding: '8px 12px',
borderRadius: '5px', cursor: 'pointer', border: 'none',
display: 'block', width: '100%', marginTop: '10px'
});
button.onclick = () => {
GM_setClipboard(formattedText, 'text');
button.innerText = '复制成功!';
button.style.backgroundColor = '#007bff';
setTimeout(() => {
button.innerText = '一键复制题库';
button.style.backgroundColor = '#28a745';
}, 2000);
};
floatingWindowBody.appendChild(button);
}
// 劫持 XHR
XMLHttpRequest.prototype.send = function() {
this.addEventListener('load', function() {
if (this.readyState === 4 && this.status === 200 && this.responseURL.includes(targetUrlPart)) {
try {
const data = JSON.parse(this.responseText);
if (data?.result?.questions) {
console.log('[导出模块 P3] 成功截获题库数据，准备生成复制按钮。');
// 核心改造：直接调用函数在UI上生成按钮，而不是暴露全局变量
addCopyToPanel(formatQuestions(data.result.questions));
}
} catch (e) {
console.error('[导出模块 P3] 解析题库JSON失败:', e);
}
}
});
return originalXhrSend.apply(this, arguments);
};
})();
})();