506 lines
14 KiB
TypeScript
506 lines
14 KiB
TypeScript
import { spawn, ChildProcess } from 'child_process'
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import fs from 'fs'
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import path from 'path'
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import http from 'http'
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import express from 'express'
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import Logger from '../utils/Logger'
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/**
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* Cloudflare文件分享服务
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* 用于生成临时文件分享链接，有效期10分钟
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*/
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export class CloudflareShareService {
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private logger: Logger
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private activeShares: Map<string, ShareSession> = new Map()
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private cleanupInterval: NodeJS.Timeout
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constructor() {
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this.logger = new Logger('CloudflareShare')
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// 每分钟清理过期的分享会话
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this.cleanupInterval = setInterval(() => {
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this.cleanupExpiredShares()
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}, 60 * 1000)
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}
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/**
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* 为文件创建临时分享链接
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* @param filePath 文件路径
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* @param filename 文件名
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* @param durationMinutes 有效期（分钟），默认10分钟
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* @returns 分享链接信息
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*/
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async createShareLink(
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filePath: string,
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filename: string,
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durationMinutes: number = 10
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): Promise<ShareResult> {
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try {
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// 检查文件是否存在
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if (!fs.existsSync(filePath)) {
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throw new Error(`文件不存在: ${filePath}`)
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}
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// 检查cloudflared是否存在
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const cloudflaredPath = await this.findCloudflared()
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if (!cloudflaredPath) {
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throw new Error('cloudflared 未找到，请先安装 cloudflared')
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}
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// 生成会话ID
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const sessionId = this.generateSessionId()
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// 创建临时服务器
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const port = await this.findAvailablePort(8080)
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const server = await this.createFileServer(filePath, filename, port)
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// 启动cloudflared隧道
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const tunnelProcess = await this.startCloudflaredTunnel(cloudflaredPath, port)
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const tunnelUrl = await this.extractTunnelUrl(tunnelProcess)
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// 创建分享会话
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const expiresAt = new Date(Date.now() + durationMinutes * 60 * 1000)
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const shareSession: ShareSession = {
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sessionId,
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filePath,
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filename,
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port,
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server,
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tunnelProcess,
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tunnelUrl,
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createdAt: new Date(),
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expiresAt
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}
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this.activeShares.set(sessionId, shareSession)
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this.logger.info(`创建分享链接成功: ${tunnelUrl} (有效期: ${durationMinutes}分钟)`)
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return {
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success: true,
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sessionId,
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shareUrl: tunnelUrl,
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filename,
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expiresAt: expiresAt.toISOString(),
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durationMinutes
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}
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} catch (error: any) {
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const errorMessage = error.message || error.toString() || '未知错误'
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this.logger.error('创建分享链接失败:', errorMessage)
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this.logger.error('错误详情:', error)
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return {
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success: false,
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error: errorMessage
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}
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}
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}
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/**
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* 停止分享会话
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*/
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async stopShare(sessionId: string): Promise<boolean> {
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const session = this.activeShares.get(sessionId)
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if (!session) {
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return false
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}
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try {
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// 关闭服务器
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if (session.server) {
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session.server.close()
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}
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// 终止cloudflared进程
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if (session.tunnelProcess && !session.tunnelProcess.killed) {
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session.tunnelProcess.kill('SIGTERM')
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// 如果进程没有正常退出，强制杀死
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setTimeout(() => {
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if (session.tunnelProcess && !session.tunnelProcess.killed) {
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session.tunnelProcess.kill('SIGKILL')
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}
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}, 5000)
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}
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this.activeShares.delete(sessionId)
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this.logger.info(`停止分享会话: ${sessionId}`)
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return true
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} catch (error: any) {
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this.logger.error(`停止分享会话失败: ${sessionId}`, error)
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return false
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}
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}
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/**
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* 获取活动分享会话列表
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*/
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getActiveShares(): ShareInfo[] {
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const shares: ShareInfo[] = []
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for (const [sessionId, session] of this.activeShares) {
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shares.push({
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sessionId,
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filename: session.filename,
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shareUrl: session.tunnelUrl,
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createdAt: session.createdAt.toISOString(),
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expiresAt: session.expiresAt.toISOString(),
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isExpired: Date.now() > session.expiresAt.getTime()
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})
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}
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return shares
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}
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/**
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* 清理过期的分享会话
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*/
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private cleanupExpiredShares(): void {
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const now = Date.now()
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const expiredSessions: string[] = []
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for (const [sessionId, session] of this.activeShares) {
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if (now > session.expiresAt.getTime()) {
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expiredSessions.push(sessionId)
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}
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}
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for (const sessionId of expiredSessions) {
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this.stopShare(sessionId)
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this.logger.info(`自动清理过期分享会话: ${sessionId}`)
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}
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}
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/**
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* 查找cloudflared可执行文件
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*/
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private async findCloudflared(): Promise<string | null> {
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// 相对于项目根目录的路径
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const projectRoot = path.resolve(process.cwd(), '..')
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const possiblePaths = [
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path.join(projectRoot, 'cloudflared'), // 项目根目录
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'./cloudflared', // 当前目录
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path.join(process.cwd(), 'cloudflared'), // 完整路径
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'/usr/local/bin/cloudflared', // 系统安装路径
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'/usr/bin/cloudflared',
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'./bin/cloudflared'
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]
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this.logger.info(`查找cloudflared，项目根目录: ${projectRoot}`)
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for (const cloudflaredPath of possiblePaths) {
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this.logger.debug(`检查路径: ${cloudflaredPath}`)
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if (fs.existsSync(cloudflaredPath)) {
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this.logger.info(`找到cloudflared: ${cloudflaredPath}`)
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return cloudflaredPath
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}
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}
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// 尝试从PATH中查找
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return new Promise((resolve) => {
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const which = spawn('which', ['cloudflared'])
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let output = ''
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let errorOutput = ''
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which.stdout.on('data', (data) => {
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output += data.toString()
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})
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which.stderr.on('data', (data) => {
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errorOutput += data.toString()
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})
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which.on('close', (code) => {
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if (code === 0 && output.trim()) {
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this.logger.info(`在PATH中找到cloudflared: ${output.trim()}`)
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resolve(output.trim())
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} else {
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this.logger.warn(`在PATH中未找到cloudflared，退出代码: ${code}，错误: ${errorOutput}`)
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resolve(null)
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}
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})
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which.on('error', (error) => {
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this.logger.error('执行which命令失败:', error)
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resolve(null)
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})
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})
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}
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/**
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* 查找可用端口
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*/
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private async findAvailablePort(startPort: number): Promise<number> {
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return new Promise((resolve, reject) => {
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const server = http.createServer()
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server.listen(startPort, () => {
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const port = (server.address() as any)?.port
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server.close(() => {
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resolve(port)
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})
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})
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server.on('error', () => {
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// 端口被占用，尝试下一个
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this.findAvailablePort(startPort + 1).then(resolve).catch(reject)
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})
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})
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}
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/**
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* 创建文件服务器
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*/
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private async createFileServer(filePath: string, filename: string, port: number): Promise<http.Server> {
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const app = express()
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// 文件下载页面
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app.get('/', (req, res) => {
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const fileStats = fs.statSync(filePath)
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const fileSize = this.formatFileSize(fileStats.size)
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const html = `
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<!DOCTYPE html>
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<html>
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<head>
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<title>File Download - ${filename}</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<style>
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* { margin: 0; padding: 0; box-sizing: border-box; }
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body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
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background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
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min-height: 100vh;
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display: flex;
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align-items: center;
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justify-content: center;
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padding: 20px;
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}
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.container {
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background: white;
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border-radius: 12px;
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padding: 40px;
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text-align: center;
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box-shadow: 0 8px 32px rgba(0,0,0,0.1);
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max-width: 500px;
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width: 100%;
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}
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.icon {
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font-size: 48px;
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margin-bottom: 20px;
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color: #667eea;
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}
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h1 { color: #333; margin-bottom: 10px; font-size: 24px; }
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.filename {
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color: #666;
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margin-bottom: 8px;
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font-size: 18px;
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word-break: break-all;
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background: #f5f5f5;
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padding: 12px;
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border-radius: 8px;
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}
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.filesize {
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color: #888;
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margin-bottom: 30px;
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font-size: 14px;
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}
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.download-btn {
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display: inline-block;
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padding: 16px 32px;
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background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
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color: white;
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text-decoration: none;
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border-radius: 8px;
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font-size: 16px;
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font-weight: 500;
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transition: transform 0.2s, box-shadow 0.2s;
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border: none;
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cursor: pointer;
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}
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.download-btn:hover {
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transform: translateY(-2px);
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box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
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}
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.warning {
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margin-top: 20px;
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padding: 16px;
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background: #fff3cd;
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border: 1px solid #ffeaa7;
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border-radius: 8px;
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color: #856404;
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font-size: 14px;
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}
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@media (max-width: 480px) {
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.container { padding: 20px; }
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h1 { font-size: 20px; }
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.filename { font-size: 16px; }
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}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="icon">📱</div>
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<h1>APK文件下载</h1>
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<div class="filename">${filename}</div>
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<div class="filesize">文件大小: ${fileSize}</div>
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<a href="/download" class="download-btn">立即下载</a>
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<div class="warning">
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⚠️ 此下载链接有效期为10分钟，请及时下载
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</div>
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</div>
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</body>
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</html>
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`
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res.send(html)
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})
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// 文件下载接口
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app.get('/download', (req, res) => {
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try {
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res.setHeader('Content-Disposition', `attachment; filename="${filename}"`)
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res.setHeader('Content-Type', 'application/vnd.android.package-archive')
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const fileStream = fs.createReadStream(filePath)
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fileStream.pipe(res)
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this.logger.info(`文件下载: ${filename} from ${req.ip}`)
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} catch (error: any) {
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this.logger.error('文件下载失败:', error)
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res.status(500).send('下载失败')
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}
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})
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return new Promise((resolve, reject) => {
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const server = app.listen(port, '0.0.0.0', () => {
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this.logger.info(`文件服务器启动: http://0.0.0.0:${port}`)
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resolve(server)
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})
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server.on('error', reject)
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})
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}
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/**
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* 启动cloudflared隧道
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*/
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private async startCloudflaredTunnel(cloudflaredPath: string, port: number): Promise<ChildProcess> {
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return new Promise((resolve, reject) => {
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const args = [
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'tunnel',
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'--url', `http://localhost:${port}`,
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'--no-autoupdate',
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'--no-tls-verify'
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]
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const tunnelProcess = spawn(cloudflaredPath, args)
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tunnelProcess.on('error', (error) => {
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this.logger.error('启动cloudflared失败:', error)
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reject(error)
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})
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// 等待进程启动
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setTimeout(() => {
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if (!tunnelProcess.killed) {
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resolve(tunnelProcess)
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} else {
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reject(new Error('cloudflared进程启动失败'))
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}
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}, 3000)
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})
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}
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/**
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* 从cloudflared输出中提取隧道URL
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*/
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private async extractTunnelUrl(tunnelProcess: ChildProcess): Promise<string> {
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return new Promise((resolve, reject) => {
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let output = ''
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const timeout = setTimeout(() => {
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reject(new Error('获取隧道URL超时'))
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}, 30000)
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const onData = (data: Buffer) => {
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output += data.toString()
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// 查找隧道URL
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const urlMatch = output.match(/https:\/\/[a-z0-9-]+\.trycloudflare\.com/i)
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if (urlMatch) {
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clearTimeout(timeout)
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tunnelProcess.stdout?.off('data', onData)
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tunnelProcess.stderr?.off('data', onData)
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resolve(urlMatch[0])
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}
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}
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tunnelProcess.stdout?.on('data', onData)
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tunnelProcess.stderr?.on('data', onData)
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})
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}
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/**
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* 生成会话ID
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*/
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private generateSessionId(): string {
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return 'share_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9)
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}
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/**
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* 格式化文件大小
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*/
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private formatFileSize(bytes: number): string {
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if (bytes === 0) return '0 B'
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const k = 1024
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const sizes = ['B', 'KB', 'MB', 'GB']
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const i = Math.floor(Math.log(bytes) / Math.log(k))
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return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]
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}
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/**
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* 销毁服务
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*/
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destroy(): void {
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if (this.cleanupInterval) {
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clearInterval(this.cleanupInterval)
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}
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// 停止所有活动分享会话
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for (const sessionId of this.activeShares.keys()) {
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this.stopShare(sessionId)
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}
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}
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}
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// 类型定义
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interface ShareSession {
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sessionId: string
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filePath: string
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filename: string
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port: number
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server: http.Server
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tunnelProcess: ChildProcess
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tunnelUrl: string
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createdAt: Date
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expiresAt: Date
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}
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interface ShareResult {
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success: boolean
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sessionId?: string
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shareUrl?: string
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filename?: string
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expiresAt?: string
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durationMinutes?: number
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error?: string
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}
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interface ShareInfo {
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sessionId: string
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filename: string
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shareUrl: string
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createdAt: string
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expiresAt: string
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isExpired: boolean
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}
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export default CloudflareShareService
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