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const express = require('express');
const session = require('express-session');
const bodyParser = require('body-parser');
const crypto = require('crypto');
const tencentcloud = require("tencentcloud-sdk-nodejs");
const path = require('path');
const fs = require('fs');
const { v4: uuidv4 } = require('uuid');
const { execFile } = require('child_process');
const he = require('he');
const app = express();
const PORT = 3000;
app.use((req, res, next) => {
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE');
res.setHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization');
res.setHeader('Access-Control-Allow-Credentials', 'true');
next();
});
// 配置会话
app.use(session({
secret: 'ctf-secret-key_023dfpi0e8hq',
resave: false,
saveUninitialized: true,
cookie: { secure: false , httpOnly: false}
}));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(express.static(path.join(__dirname, 'public')));
// 用户数据库
const users = {'admin': { password: 'nepn3pctf-game2025', role: 'admin', uuid: uuidv4(), bio: '' }};
// 存储登录页面背景图片 URL
let loginBgUrl = '';
// STS 客户端配置
const StsClient = tencentcloud.sts.v20180813.Client;
const clientConfig = {
credential: {
secretId: "AKIDRaszDXeZJin6JHbjeOjLQL3Yp4EAvR",
secretKey: "NXUDi2B7rONBU8IF4pZ9d9AndjSzKRN6",
},
region: "ap-guangzhou",
profile: {
httpProfile: {
endpoint: "sts.tencentcloudapi.com",
},
},
};
const client = new StsClient(clientConfig);
// 注册接口
app.post('/api/register', (req, res) => {
const { username, password } = req.body;
if (users[username]) {
return res.status(409).json({ success: false, message: '用户名已存在' });
}
const uuid = uuidv4();
users[username] = { password, role: 'user', uuid, bio: '' };
res.json({ success: true, message: '注册成功' });
});
// 登录页面
app.get('/', (req, res) => {
let loginHtml = fs.readFileSync(path.join(__dirname, 'public', 'login.html'), 'utf8');
if (loginBgUrl) {
const key = loginBgUrl.replace('/uploads/', 'uploads/');
const fileUrl = `http://ctf.mudongmudong.com/${key}`;
const iframeHtml = `<iframe id="backgroundframe" src="${fileUrl}" style="position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; border: none;"></iframe>`;
loginHtml = loginHtml.replace('</body>', `${iframeHtml}</body>`);
}
res.send(loginHtml);
});
// 登录接口
app.post('/api/login', (req, res) => {
const { username, password } = req.body;
const user = users[username];
if (user && user.password === password) {
req.session.user = { username, role: user.role, uuid: user.uuid };
res.json({ success: true, role: user.role });
} else {
res.status(401).json({ success: false, message: '认证失败' });
}
});
// 检查用户是否已登录
function ensureAuthenticated(req, res, next) {
if (req.session.user) {
next();
} else {
res.status(401).json({ success: false, message: '请先登录' });
}
}
// 获取用户信息
app.get('/api/user', ensureAuthenticated, (req, res) => {
const user = users[req.session.user.username];
res.json({ username: req.session.user.username, role: req.session.user.role, uuid: req.session.user.uuid, bio: user.bio });
});
// 获取头像临时密钥
app.get('/api/avatar-credentials', ensureAuthenticated, async (req, res) => {
const params = {
Policy: JSON.stringify({
version: "2.0",
statement: [
{
effect: "allow",
action: ["cos:PutObject"],
resource: [
`qcs::cos:ap-guangzhou:uid/1360802834:test-1360802834/picture/${req.session.user.uuid}.png`
],
Condition: {
numeric_equal: {
"cos:request-count": 5
},
numeric_less_than_equal: {
"cos:content-length": 10485760 // 10MB 大小限制
}
}
},
{
effect: "allow",
action: ["cos:GetBucket"],
resource: [
"qcs::cos:ap-guangzhou:uid/1360802834:test-1360802834/*"
]
}
]
}),
DurationSeconds: 1800,
Name: "avatar-upload-client"
};
try {
const response = await client.GetFederationToken(params);
const auth = Buffer.from(JSON.stringify(params.Policy)).toString('base64');
res.json({ ...response.Credentials, auth });
} catch (err) {
console.error("获取头像临时密钥失败:", err);
res.status(500).json({ error: '获取临时密钥失败' });
}
});
// 获取文件上传临时密钥（管理员）
app.get('/api/file-credentials', ensureAuthenticated, async (req, res) => {
if (req.session.user.role !== 'admin') {
return res.status(403).json({ error: '权限不足' });
}
const params = {
Policy: JSON.stringify({
version: "2.0",
statement: [
{
effect: "allow",
action: ["cos:PutObject"],
resource: [
`qcs::cos:ap-guangzhou:uid/1360802834:test-1360802834/uploads/${req.session.user.uuid}/*`
],
Condition: {
numeric_equal: {
"cos:request-count": 5
},
numeric_less_than_equal: {
"cos:content-length": 10485760
}
}
},
{
effect: "allow",
action: ["cos:GetBucket"],
resource: [
"qcs::cos:ap-guangzhou:uid/1360802834:test-1360802834/*"
]
}
]
}),
DurationSeconds: 1800,
Name: "file-upload-client"
};
try {
const response = await client.GetFederationToken(params);
const auth = Buffer.from(JSON.stringify(params.Policy)).toString('base64');
res.json({ ...response.Credentials, auth });
} catch (err) {
console.error("获取文件临时密钥失败:", err);
res.status(500).json({ error: '获取临时密钥失败' });
}
});
// 保存个人简介（做好 XSS 防护）
app.post('/api/save-bio', ensureAuthenticated, (req, res) => {
const { bio } = req.body;
const sanitizedBio = he.encode(bio);
const user = users[req.session.user.username];
user.bio = sanitizedBio;
res.json({ success: true, message: '个人简介保存成功' });
});
// 退出登录
app.post('/api/logout', ensureAuthenticated, (req, res) => {
req.session.destroy();
res.json({ success: true });
});
// 设置登录页面背景
app.post('/api/set-login-bg', ensureAuthenticated, async (req, res) => {
if (req.session.user.role !== 'admin') {
return res.status(403).json({ success: false, message: '权限不足' });
}
const { key } = req.body;
bgURL = key;
try {
const fileUrl = `http://ctf.mudongmudong.com/${bgURL}`;
const response = await fetch(fileUrl);
if (response.ok) {
const content = response.text();
} else {
console.error('获取文件失败:', response.statusText);
return res.status(400).json({ success: false, message: '获取文件内容失败' });
}
} catch (error) {
return res.status(400).json({ success: false, message: '打开文件失败' });
}
loginBgUrl = key;
res.json({ success: true, message: '背景设置成功' });
});
app.get('/api/bot', ensureAuthenticated, (req, res) => {
if (req.session.user.role !== 'admin') {
return res.status(403).json({ success: false, message: '权限不足' });
}
const scriptPath = path.join(__dirname, 'bot_visit');
// bot 将会使用客户端软件访问 http://127.0.1:3000/ ，但是bot可不会带着他的秘密去访问哦
execFile(scriptPath, ['--no-sandbox'], (error, stdout, stderr) => {
if (error) {
console.error(`bot visit fail: ${error.message}`);
return res.status(500).json({ success: false, message: 'bot visit failed' });
}
console.log(`bot visit success:\n${stdout}`);
res.json({ success: true, message: 'bot visit success' });
});
});
// 下载客户端软件
app.get('/downloadClient', (req, res) => {
const filePath = path.join(__dirname, 'client_setup.zip');
if (!fs.existsSync(filePath)) {
return res.status(404).json({ success: false, message: '客户端文件不存在' });
}
res.download(filePath, 'client_setup.zip', (err) => {
if (err) {
console.error('client download error: ', err);
return res.status(500).json({ success: false, message: '下载失败' });
} else {
}
});
});
// 启动服务器
app.listen(PORT, () => {
console.log(`服务器运行在端口 ${PORT}`);
});
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