77 lines
2.1 KiB
TypeScript
77 lines
2.1 KiB
TypeScript
import { createError, defineEventHandler, getRouterParam, setHeader } from 'h3'
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import { promises as fs } from 'fs'
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import path from 'path'
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export default defineEventHandler(async (event) => {
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try {
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// 验证管理员权限
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const user = event.context.user
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if (!user || user.role !== 'SUPER_ADMIN') {
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throw createError({
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statusCode: 403,
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message: '只有超级管理员可以下载备份文件'
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})
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}
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const filename = getRouterParam(event, 'filename')
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if (!filename) {
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throw createError({
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statusCode: 400,
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message: '请指定文件名'
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})
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}
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// 验证文件名安全性
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if (filename.includes('..') || filename.includes('/') || filename.includes('\\')) {
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throw createError({
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statusCode: 400,
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message: '无效的文件名'
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})
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}
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// 验证文件扩展名
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if (!filename.endsWith('.json')) {
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throw createError({
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statusCode: 400,
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message: '只能下载 JSON 格式的备份文件'
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})
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}
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const backupDir = path.join(process.cwd(), 'backups')
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const filepath = path.join(backupDir, filename)
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// 检查文件是否存在
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try {
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await fs.access(filepath)
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} catch {
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throw createError({
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statusCode: 404,
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message: '备份文件不存在'
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})
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}
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// 获取文件信息
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const stats = await fs.stat(filepath)
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// 设置响应头
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setHeader(event, 'Content-Type', 'application/json')
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setHeader(event, 'Content-Disposition', `attachment; filename="${filename}"`)
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setHeader(event, 'Content-Length', stats.size.toString())
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setHeader(event, 'Cache-Control', 'no-cache')
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// 读取并返回文件内容
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const fileContent = await fs.readFile(filepath)
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console.log(`管理员 ${user.username} 下载了备份文件: ${filename}`)
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return fileContent
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} catch (error) {
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console.error('下载备份文件失败:', error)
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throw createError({
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statusCode: error.statusCode || 500,
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message: error.message || '下载备份文件失败'
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})
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}
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})
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