122 lines
3.9 KiB
JavaScript
122 lines
3.9 KiB
JavaScript
const crypto = require('crypto');
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const { request } = require('./http');
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/**
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* 中国移动云盘链接检测
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* URL格式:
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* https://yun.139.com/shareweb/#/w/i/{shareID}
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* https://caiyun.139.com/m/i?{shareID}
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* API: POST https://share-kd-njs.yun.139.com/yun-share/richlifeApp/devapp/IOutLink/getOutLinkInfoV6
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* 请求和响应均通过AES-CBC加密（固定密钥）
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*/
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const CMCC_AES_KEY = 'PVGDwmcvfs1uV3d1';
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function aesCBCEncrypt(plaintext, key) {
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const iv = crypto.randomBytes(16);
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const cipher = crypto.createCipheriv('aes-128-cbc', Buffer.from(key, 'utf-8'), iv);
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// PKCS7 padding
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const blockSize = 16;
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const padLen = blockSize - (Buffer.byteLength(plaintext, 'utf-8') % blockSize);
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const padded = Buffer.concat([
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Buffer.from(plaintext, 'utf-8'),
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Buffer.alloc(padLen, padLen),
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]);
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const encrypted = Buffer.concat([cipher.update(padded), cipher.final()]);
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return Buffer.concat([iv, encrypted]).toString('base64');
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}
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function aesCBCDecrypt(encryptedBase64, key) {
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const rawData = Buffer.from(encryptedBase64, 'base64');
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if (rawData.length < 16) throw new Error('加密数据长度不足');
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const iv = rawData.subarray(0, 16);
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const ciphertext = rawData.subarray(16);
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const decipher = crypto.createDecipheriv('aes-128-cbc', Buffer.from(key, 'utf-8'), iv);
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const decrypted = Buffer.concat([decipher.update(ciphertext), decipher.final()]);
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// 去除PKCS7填充
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const padLen = decrypted[decrypted.length - 1];
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if (padLen > 0 && padLen <= 16) {
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return decrypted.subarray(0, decrypted.length - padLen).toString('utf-8');
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}
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return decrypted.toString('utf-8');
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}
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async function checkCMCC(link) {
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const shareID = extractShareID(link);
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if (!shareID) {
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return { valid: false, reason: '链接格式无效：无法提取分享ID' };
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}
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try {
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const requestData = {
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getOutLinkInfoReq: {
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account: '',
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linkID: shareID,
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passwd: '',
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caSrt: 1,
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coSrt: 1,
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srtDr: 0,
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bNum: 1,
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pCaID: 'root',
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eNum: 200,
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},
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commonAccountInfo: {
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account: '',
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accountType: 1,
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},
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};
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const jsonStr = JSON.stringify(requestData);
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const encryptedData = aesCBCEncrypt(jsonStr, CMCC_AES_KEY);
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const encryptedJSON = JSON.stringify(encryptedData);
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const { statusCode, body } = await request(
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'https://share-kd-njs.yun.139.com/yun-share/richlifeApp/devapp/IOutLink/getOutLinkInfoV6',
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{
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method: 'POST',
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body: encryptedJSON,
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headers: {
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'Content-Type': 'application/json',
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'Accept': 'application/json, text/plain, */*',
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'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36',
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'hcy-cool-flag': '1',
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'x-deviceinfo': '||3|12.27.0|chrome|131.0.0.0|5c7c68368f048245e1ce47f1c0f8f2d0||windows 10|1536X695|zh-CN|||',
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},
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}
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);
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if (statusCode !== 200) {
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return { valid: false, reason: `API返回错误状态码: ${statusCode}` };
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}
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// 解密响应
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const decryptedData = aesCBCDecrypt(body.trim(), CMCC_AES_KEY);
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const response = JSON.parse(decryptedData);
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const resultCode = response.resultCode;
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const desc = response.desc;
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const data = response.data;
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if (resultCode === '0' && data != null) {
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return { valid: true, reason: '' };
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}
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const failReason = desc || (resultCode ? `错误码: ${resultCode}` : '获取分享信息失败');
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return { valid: false, reason: failReason };
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} catch (err) {
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if (err.message === '请求超时') return { valid: false, reason: '请求超时' };
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return { valid: false, reason: `检测失败: ${err.message}` };
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}
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}
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function extractShareID(shareURL) {
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const match = shareURL.match(/https:\/\/(?:yun\.139\.com\/shareweb\/#\/w\/i\/|caiyun\.139\.com\/m\/i\?)([^&]+)/);
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return match ? match[1] : '';
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}
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module.exports = { checkCMCC, extractShareID, aesCBCEncrypt, aesCBCDecrypt }; |