75 lines
1.7 KiB
JavaScript
75 lines
1.7 KiB
JavaScript
// 认证工具函数
|
|
const bcrypt = require('bcryptjs');
|
|
const jwt = require('jsonwebtoken');
|
|
|
|
// JWT 密钥（生产环境应从环境变量读取）
|
|
const JWT_SECRET = process.env.JWT_SECRET || 'your-jwt-secret-change-in-production';
|
|
const JWT_EXPIRES_IN = process.env.JWT_EXPIRES_IN || '24h';
|
|
|
|
/**
|
|
* 密码哈希
|
|
* @param {string} password - 明文密码
|
|
* @returns {string} - 哈希后的密码
|
|
*/
|
|
function hashPassword(password) {
|
|
const saltRounds = 12; // 推荐值：10-14
|
|
return bcrypt.hashSync(password, saltRounds);
|
|
}
|
|
|
|
/**
|
|
* 验证密码
|
|
* @param {string} password - 明文密码
|
|
* @param {string} hash - 数据库中的哈希密码
|
|
* @returns {boolean} - 是否匹配
|
|
*/
|
|
function verifyPassword(password, hash) {
|
|
return bcrypt.compareSync(password, hash);
|
|
}
|
|
|
|
/**
|
|
* 生成 JWT Token
|
|
* @param {object} payload - token 载荷 { id, username, role }
|
|
* @returns {string} - JWT token
|
|
*/
|
|
function generateToken(payload) {
|
|
return jwt.sign(payload, JWT_SECRET, {
|
|
expiresIn: JWT_EXPIRES_IN,
|
|
issuer: 'company-finance-system',
|
|
audience: 'company-finance-client'
|
|
});
|
|
}
|
|
|
|
/**
|
|
* 验证 JWT Token
|
|
* @param {string} token - JWT token
|
|
* @returns {object|null} - 解码后的 payload 或 null
|
|
*/
|
|
function verifyToken(token) {
|
|
try {
|
|
return jwt.verify(token, JWT_SECRET);
|
|
} catch (error) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 从请求头中提取 token
|
|
* @param {object} req - Express 请求对象
|
|
* @returns {string|null} - token 或 null
|
|
*/
|
|
function extractToken(req) {
|
|
const authHeader = req.headers.authorization;
|
|
if (authHeader && authHeader.startsWith('Bearer ')) {
|
|
return authHeader.substring(7);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
module.exports = {
|
|
hashPassword,
|
|
verifyPassword,
|
|
generateToken,
|
|
verifyToken,
|
|
extractToken
|
|
};
|