257 lines
9.7 KiB
JavaScript
257 lines
9.7 KiB
JavaScript
const { Server } = require('socket.io')
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const SFTPClient = require('ssh2-sftp-client')
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const rawPath = require('path')
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const fs = require('fs')
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const { readSSHRecord, verifyAuth, RSADecrypt, AESDecrypt } = require('../utils')
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const { sftpCacheDir } = require('../config')
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const CryptoJS = require('crypto-js')
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function clearDir(path, rmSelf = false) {
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let files = []
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if(!fs.existsSync(path)) return consola.info('clearDir: 目标文件夹不存在')
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files = fs.readdirSync(path)
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files.forEach((file) => {
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let curPath = path + '/' + file
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if(fs.statSync(curPath).isDirectory()){
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clearDir(curPath) //递归删除文件夹
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fs.rmdirSync(curPath) // 删除文件夹
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} else {
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fs.unlinkSync(curPath) //删除文件
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}
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})
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if(rmSelf) fs.rmdirSync(path)
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consola.success('clearDir: 已清空缓存文件')
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}
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const pipeStream = (path, writeStream) => {
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// console.log('path', path)
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return new Promise(resolve => {
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const readStream = fs.createReadStream(path)
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readStream.on('end', () => {
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fs.unlinkSync(path) // 删除已写入切片
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resolve()
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})
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readStream.pipe(writeStream)
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})
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}
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function listenInput(sftpClient, socket) {
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socket.on('open_dir', async (path) => {
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const exists = await sftpClient.exists(path)
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if(!exists) return socket.emit('not_exists_dir', '目录不存在或当前不可访问')
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try {
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let dirLs = await sftpClient.list(path)
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socket.emit('dir_ls', dirLs)
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} catch (error) {
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consola.error('open_dir Error', error.message)
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socket.emit('sftp_error', error.message)
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}
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})
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socket.on('rm_dir', async (path) => {
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const exists = await sftpClient.exists(path)
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if(!exists) return socket.emit('not_exists_dir', '目录不存在或当前不可访问')
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try {
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let res = await sftpClient.rmdir(path, true) // 递归删除
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socket.emit('rm_success', res)
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} catch (error) {
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consola.error('rm_dir Error', error.message)
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socket.emit('sftp_error', error.message)
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}
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})
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socket.on('rm_file', async (path) => {
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const exists = await sftpClient.exists(path)
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if(!exists) return socket.emit('not_exists_dir', '文件不存在或当前不可访问')
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try {
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let res = await sftpClient.delete(path)
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socket.emit('rm_success', res)
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} catch (error) {
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consola.error('rm_file Error', error.message)
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socket.emit('sftp_error', error.message)
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}
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})
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// socket.on('down_dir', async (path) => {
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// const exists = await sftpClient.exists(path)
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// if(!exists) return socket.emit('not_exists_dir', '文件夹不存在或当前不可访问')
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// let res = await sftpClient.downloadDir(path, sftpCacheDir)
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// socket.emit('down_dir_success', res)
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// })
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socket.on('down_file', async ({ path, name, size, target = 'down' }) => {
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// target: down or preview
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const exists = await sftpClient.exists(path)
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if(!exists) return socket.emit('not_exists_dir', '文件不存在或当前不可访问')
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try {
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const localPath = rawPath.join(sftpCacheDir, name)
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let timer = null
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let res = await sftpClient.fastGet(path, localPath, {
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step: step => {
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if(timer) return
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timer = setTimeout(() => {
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const percent = Math.ceil((step / size) * 100) // 下载进度为服务器下载到服务端的进度，前端无需*2
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console.log(`从服务器下载进度：${ percent }%`)
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socket.emit('down_file_progress', percent)
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timer = null
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}, 200)
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}
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})
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consola.success('sftp下载成功: ', res)
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let buffer = fs.readFileSync(localPath)
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let data = { buffer, name }
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switch(target) {
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case 'down':
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socket.emit('down_file_success', data)
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break
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case 'preview':
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socket.emit('preview_file_success', data)
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break
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}
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fs.unlinkSync(localPath) //删除文件
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} catch (error) {
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consola.error('down_file Error', error.message)
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socket.emit('sftp_error', error.message)
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}
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})
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socket.on('up_file', async ({ targetPath, fullPath, name, file }) => {
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console.log({ targetPath, fullPath, name, file })
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const exists = await sftpClient.exists(targetPath)
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if(!exists) return socket.emit('not_exists_dir', '文件夹不存在或当前不可访问')
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try {
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const localPath = rawPath.join(sftpCacheDir, name)
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fs.writeFileSync(localPath, file)
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let res = await sftpClient.fastPut(localPath, fullPath)
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consola.success('sftp上传成功: ', res)
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socket.emit('up_file_success', res)
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} catch (error) {
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consola.error('up_file Error', error.message)
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socket.emit('sftp_error', error.message)
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}
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})
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/** 分片上传 */
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// 1. 创建本地缓存文件夹
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let md5List = []
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socket.on('create_cache_dir', async ({ targetPath, name }) => {
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// console.log({ targetPath, name })
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const exists = await sftpClient.exists(targetPath)
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if(!exists) return socket.emit('not_exists_dir', '文件夹不存在或当前不可访问')
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md5List = []
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const localPath = rawPath.join(sftpCacheDir, name)
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if(fs.existsSync(localPath)) clearDir(localPath) // 清空目录
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fs.mkdirSync(localPath, { recursive: true })
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console.log('================create_cache_success================')
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socket.emit('create_cache_success')
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})
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socket.on('up_file_slice', async ({ name, sliceFile, fileIndex }) => {
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// console.log('up_file_slice:', fileIndex, name)
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try {
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let md5 = `${ fileIndex }.${ CryptoJS.MD5(fileIndex+name).toString() }`
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const localPath = rawPath.join(sftpCacheDir, name, md5)
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md5List.push(localPath)
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fs.writeFileSync(localPath, sliceFile)
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socket.emit('up_file_slice_success', md5)
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} catch (error) {
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consola.error('up_file_slice Error', error.message)
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socket.emit('up_file_slice_fail', error.message)
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}
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})
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socket.on('up_file_slice_over', async ({ name, fullPath, range, size }) => {
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const resultDirPath = rawPath.join(sftpCacheDir, name)
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const resultFilePath = rawPath.join(sftpCacheDir, name, name)
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try {
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console.log('md5List: ', md5List)
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const arr = md5List.map((chunkFilePath, index) => {
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return pipeStream(
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chunkFilePath,
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// 指定位置创建可写流
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fs.createWriteStream(resultFilePath, {
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start: index * range,
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end: (index + 1) * range
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})
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)
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})
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md5List = []
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await Promise.all(arr)
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let timer = null
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let res = await sftpClient.fastPut(resultFilePath, fullPath, {
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step: step => {
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if(timer) return
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timer = setTimeout(() => {
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const percent = Math.ceil((step / size) * 100)
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console.log(`上传服务器进度：${ percent }%`)
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socket.emit('up_file_progress', percent)
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timer = null
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}, 200)
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}
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})
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consola.success('sftp上传成功: ', res)
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socket.emit('up_file_success', res)
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clearDir(resultDirPath, true) // 传服务器后移除文件夹及其文件
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} catch (error) {
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consola.error('sftp上传失败: ', error.message)
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socket.emit('up_file_fail', error.message)
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clearDir(resultDirPath, true) // 传服务器后移除文件夹及其文件
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}
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})
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}
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module.exports = (httpServer) => {
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const serverIo = new Server(httpServer, {
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path: '/sftp',
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cors: {
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origin: '*'
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}
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})
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serverIo.on('connection', (socket) => {
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// 前者兼容nginx反代, 后者兼容nodejs自身服务
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let clientIp = socket.handshake.headers['x-forwarded-for'] || socket.handshake.address
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let sftpClient = new SFTPClient()
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consola.success('terminal websocket 已连接')
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socket.on('create', ({ host: ip, token }) => {
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const { code } = verifyAuth(token, clientIp)
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if(code !== 1) {
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socket.emit('token_verify_fail')
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socket.disconnect()
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return
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}
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const sshRecord = readSSHRecord()
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let loginInfo = sshRecord.find(item => item.host === ip)
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if(!sshRecord.some(item => item.host === ip)) return socket.emit('create_fail', `未找到【${ ip }】凭证`)
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let { type, host, port, username, randomKey } = loginInfo
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// 解密放到try里面，防止报错【公私钥必须配对, 否则需要重新添加服务器密钥】
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randomKey = AESDecrypt(randomKey) // 先对称解密key
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randomKey = RSADecrypt(randomKey) // 再非对称解密key
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loginInfo[type] = AESDecrypt(loginInfo[type], randomKey) // 对称解密ssh密钥
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consola.info('准备连接Sftp：', host)
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const authInfo = { host, port, username, [type]: loginInfo[type] }
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sftpClient.connect(authInfo)
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.then(() => {
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consola.success('连接Sftp成功：', host)
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return sftpClient.list('/')
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})
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.then((rootLs) => {
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// 普通文件-、目录文件d、链接文件l
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socket.emit('root_ls', rootLs) // 先返回根目录
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listenInput(sftpClient, socket) // 监听前端请求
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})
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.catch((err) => {
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consola.error('创建Sftp失败:', err.message)
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socket.emit('create_fail', err.message)
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})
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})
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socket.on('disconnect', async () => {
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sftpClient.end()
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.then(() => {
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consola.info('sftp连接断开')
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})
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.catch((error) => {
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consola.info('sftp断开连接失败:', error.message)
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})
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.finally(() => {
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sftpClient = null
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const cacheDir = rawPath.join(sftpCacheDir)
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clearDir(cacheDir)
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})
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})
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})
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}
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