mirror of
https://github.com/ILoveBingLu/CipherTalk.git
synced 2026-05-18 02:09:16 +08:00
ILoveBingLu
ff05dbaa32
- 新增聊天记录独立窗口（ChatHistoryPage），支持在单独窗口中查看完整聊天记录 - 实现 createChatHistoryWindow 函数，支持窗口复用和主题适配 - 新增 IPC 处理器用于打开聊天记录窗口和获取单条消息 - 添加 getMessagesByDate 和 getDatesWithMessages 方法，支持按日期查询消息 - 在 preload.ts 中暴露新的 IPC 调用接口 - 新增 ChatHistoryPage.tsx 和 ChatHistoryPage.scss 组件文件 - 更新 package.json 依赖项和 package-lock.json - 更新 README.md，新增爱发电赞助支持入口 - 添加爱发电二维码图片资源 - 版本号更新至 2.1.6 - 优化聊天页面和设置页面的用户体验 - 更新类型定义和配置文件以支持新功能
1798 lines
61 KiB
TypeScript
1798 lines
61 KiB
TypeScript
import { app, BrowserWindow } from 'electron'
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import { basename, dirname, extname, join } from 'path'
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import { pathToFileURL } from 'url'
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import { existsSync, mkdirSync, readdirSync, readFileSync, statSync, unlinkSync } from 'fs'
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import { writeFile } from 'fs/promises'
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import crypto from 'crypto'
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import Database from 'better-sqlite3'
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import { Worker } from 'worker_threads'
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import { execFile } from 'child_process'
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import { promisify } from 'util'
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import { ConfigService } from './config'
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const execFileAsync = promisify(execFile)
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// 获取 ffmpeg-static 的路径
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function getStaticFfmpegPath(): string | null {
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try {
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// ffmpeg-static 导出的是路径字符串
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// eslint-disable-next-line @typescript-eslint/no-var-requires
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const ffmpegStatic = require('ffmpeg-static')
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if (typeof ffmpegStatic === 'string') {
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return ffmpegStatic
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}
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return null
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} catch {
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return null
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}
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}
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type DecryptResult = {
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success: boolean
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localPath?: string
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error?: string
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isThumb?: boolean // 是否是缩略图（没有高清图时返回缩略图）
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}
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type HardlinkState = {
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db: Database.Database
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imageTable?: string
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dirTable?: string
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}
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export class ImageDecryptService {
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private configService = new ConfigService()
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private hardlinkCache = new Map<string, HardlinkState>()
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private resolvedCache = new Map<string, string>()
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private pending = new Map<string, Promise<DecryptResult>>()
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private readonly defaultV1AesKey = 'cfcd208495d565ef'
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private cacheIndexed = false
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private cacheIndexing: Promise<void> | null = null
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private updateFlags = new Map<string, boolean>()
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async resolveCachedImage(payload: { sessionId?: string; imageMd5?: string; imageDatName?: string }): Promise<DecryptResult & { hasUpdate?: boolean }> {
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await this.ensureCacheIndexed()
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const cacheKeys = this.getCacheKeys(payload)
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const cacheKey = cacheKeys[0]
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if (!cacheKey) {
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return { success: false, error: '缺少图片标识' }
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}
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for (const key of cacheKeys) {
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const cached = this.resolvedCache.get(key)
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if (cached && existsSync(cached) && this.isImageFile(cached)) {
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const dataUrl = this.fileToDataUrl(cached)
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const isThumb = this.isThumbnailPath(cached)
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const hasUpdate = isThumb ? (this.updateFlags.get(key) ?? false) : false
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if (isThumb) {
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this.triggerUpdateCheck(payload, key, cached)
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} else {
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this.updateFlags.delete(key)
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}
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this.emitCacheResolved(payload, key, dataUrl || this.filePathToUrl(cached))
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return { success: true, localPath: dataUrl || this.filePathToUrl(cached), hasUpdate }
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}
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if (cached && !this.isImageFile(cached)) {
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this.resolvedCache.delete(key)
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}
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}
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for (const key of cacheKeys) {
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const existing = this.findCachedOutput(key, payload.sessionId)
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if (existing) {
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this.cacheResolvedPaths(key, payload.imageMd5, payload.imageDatName, existing)
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const dataUrl = this.fileToDataUrl(existing)
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const isThumb = this.isThumbnailPath(existing)
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const hasUpdate = isThumb ? (this.updateFlags.get(key) ?? false) : false
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if (isThumb) {
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this.triggerUpdateCheck(payload, key, existing)
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} else {
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this.updateFlags.delete(key)
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}
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this.emitCacheResolved(payload, key, dataUrl || this.filePathToUrl(existing))
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return { success: true, localPath: dataUrl || this.filePathToUrl(existing), hasUpdate }
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}
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}
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return { success: false, error: '未找到缓存图片' }
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}
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async decryptImage(payload: { sessionId?: string; imageMd5?: string; imageDatName?: string; force?: boolean }): Promise<DecryptResult> {
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await this.ensureCacheIndexed()
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const cacheKey = payload.imageMd5 || payload.imageDatName
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if (!cacheKey) {
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return { success: false, error: '缺少图片标识' }
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}
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if (!payload.force) {
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const cached = this.resolvedCache.get(cacheKey)
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if (cached && existsSync(cached) && this.isImageFile(cached)) {
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const dataUrl = this.fileToDataUrl(cached)
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return { success: true, localPath: dataUrl || this.filePathToUrl(cached) }
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}
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if (cached && !this.isImageFile(cached)) {
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this.resolvedCache.delete(cacheKey)
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}
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}
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const pending = this.pending.get(cacheKey)
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if (pending) {
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return pending
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}
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const task = this.decryptImageInternal(payload, cacheKey)
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this.pending.set(cacheKey, task)
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try {
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return await task
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} finally {
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this.pending.delete(cacheKey)
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}
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}
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private async decryptImageInternal(
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payload: { sessionId?: string; imageMd5?: string; imageDatName?: string; force?: boolean },
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cacheKey: string
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): Promise<DecryptResult> {
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try {
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const wxid = this.configService.get('myWxid')
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const dbPath = this.configService.get('dbPath')
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if (!wxid || !dbPath) {
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return { success: false, error: '未配置账号或数据库路径' }
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}
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const accountDir = this.resolveAccountDir(dbPath, wxid)
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if (!accountDir) {
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console.error(`[ImageDecrypt] 未找到账号目录 wxid=${wxid} dbPath=${dbPath}`)
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return { success: false, error: '未找到账号目录' }
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}
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const datPath = await this.resolveDatPath(
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accountDir,
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payload.imageMd5,
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payload.imageDatName,
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payload.sessionId,
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{ allowThumbnail: !payload.force, skipResolvedCache: Boolean(payload.force) }
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)
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// 如果要求高清图但没找到，直接返回提示
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if (!datPath && payload.force) {
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console.warn(`[ImageDecrypt] 未找到高清图: ${payload.imageDatName || payload.imageMd5}`)
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return { success: false, error: '未找到高清图，请在微信中点开该图片查看后重试' }
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}
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if (!datPath) {
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console.warn(`[ImageDecrypt] 未找到图片文件: ${payload.imageDatName || payload.imageMd5} sessionId=${payload.sessionId}`)
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return { success: false, error: '未找到图片文件' }
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}
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if (!extname(datPath).toLowerCase().includes('dat')) {
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this.cacheResolvedPaths(cacheKey, payload.imageMd5, payload.imageDatName, datPath)
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const dataUrl = this.fileToDataUrl(datPath)
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const isThumb = this.isThumbnailPath(datPath)
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return { success: true, localPath: dataUrl || this.filePathToUrl(datPath), isThumb }
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}
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// 查找已缓存的解密文件
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const existing = this.findCachedOutput(cacheKey, payload.sessionId, payload.force)
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if (existing) {
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const isHd = this.isHdPath(existing)
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// 如果要求高清但找到的是缩略图，继续解密高清图
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if (!(payload.force && !isHd)) {
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this.cacheResolvedPaths(cacheKey, payload.imageMd5, payload.imageDatName, existing)
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const dataUrl = this.fileToDataUrl(existing)
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const isThumb = this.isThumbnailPath(existing)
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return { success: true, localPath: dataUrl || this.filePathToUrl(existing), isThumb }
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}
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}
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const xorKeyStr = this.configService.get('imageXorKey')
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// 支持十六进制格式（如 0x53）和十进制格式
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let xorKey: number
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if (typeof xorKeyStr === 'string') {
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const trimmed = xorKeyStr.trim()
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if (trimmed.toLowerCase().startsWith('0x')) {
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xorKey = parseInt(trimmed, 16)
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} else {
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xorKey = parseInt(trimmed, 10)
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}
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} else {
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xorKey = xorKeyStr as number
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}
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if (Number.isNaN(xorKey) || (!xorKey && xorKey !== 0)) {
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return { success: false, error: '未配置图片解密密钥' }
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}
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const aesKeyRaw = this.configService.get('imageAesKey')
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const aesKey = this.resolveAesKey(aesKeyRaw)
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let decrypted = await this.decryptDatAuto(datPath, xorKey, aesKey)
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// 检查是否是 wxgf 格式，如果是则尝试提取真实图片数据
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const wxgfResult = await this.unwrapWxgf(decrypted)
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decrypted = wxgfResult.data
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let ext = this.detectImageExtension(decrypted)
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// 如果是 wxgf 格式且没检测到扩展名
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if (wxgfResult.isWxgf && !ext) {
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// wxgf 格式需要 ffmpeg 转换，如果转换失败则无法显示
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ext = '.hevc'
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}
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const finalExt = ext || '.jpg'
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const outputPath = this.getCacheOutputPathFromDat(datPath, finalExt, payload.sessionId)
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await writeFile(outputPath, decrypted)
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const isThumb = this.isThumbnailPath(datPath)
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this.cacheResolvedPaths(cacheKey, payload.imageMd5, payload.imageDatName, outputPath)
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if (!isThumb) {
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this.clearUpdateFlags(cacheKey, payload.imageMd5, payload.imageDatName)
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}
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// 对于 hevc 格式，返回错误提示用户安装 ffmpeg
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if (finalExt === '.hevc') {
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console.warn(`[ImageDecrypt] 检测到 wxgf/hevc 格式图片，但未启用转换或转换失败: ${cacheKey}`)
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return {
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success: false,
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error: '此图片为微信新格式(wxgf)，需要安装 ffmpeg 才能显示。请运行: winget install ffmpeg',
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isThumb
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}
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}
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let localPath: string
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const dataUrl = this.bufferToDataUrl(decrypted, finalExt)
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localPath = dataUrl || this.filePathToUrl(outputPath)
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return { success: true, localPath, isThumb }
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} catch (e) {
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console.error(`[ImageDecrypt] 解密异常: ${cacheKey}`, e)
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return { success: false, error: String(e) }
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}
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}
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private resolveAccountDir(dbPath: string, wxid: string): string | null {
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const cleanedWxid = this.cleanAccountDirName(wxid)
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const normalized = dbPath.replace(/[\\/]+$/, '')
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// 1. 直接匹配原始 wxid
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const directOriginal = join(normalized, wxid)
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if (existsSync(directOriginal)) return directOriginal
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// 2. 直接匹配清理后的 wxid
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if (cleanedWxid !== wxid) {
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const directCleaned = join(normalized, cleanedWxid)
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if (existsSync(directCleaned)) return directCleaned
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}
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if (this.isAccountDir(normalized)) return normalized
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// 3. 扫描目录查找匹配
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try {
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const entries = readdirSync(normalized)
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const wxidLower = wxid.toLowerCase()
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const cleanedWxidLower = cleanedWxid.toLowerCase()
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for (const entry of entries) {
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const entryPath = join(normalized, entry)
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if (!this.isDirectory(entryPath)) continue
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const lowerEntry = entry.toLowerCase()
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// 精确匹配或前缀匹配
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if (lowerEntry === wxidLower || lowerEntry === cleanedWxidLower ||
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lowerEntry.startsWith(`${wxidLower}_`) || lowerEntry.startsWith(`${cleanedWxidLower}_`)) {
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if (this.isAccountDir(entryPath)) return entryPath
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}
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}
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} catch { }
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return null
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}
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/**
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* 获取解密后的缓存目录（用于查找 hardlink.db）
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*/
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private getDecryptedCacheDir(wxid: string): string | null {
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// 获取有效的缓存路径（配置的或默认的）
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const configuredPath = this.configService.get('cachePath')
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const cachePath = configuredPath || this.getDefaultCachePath()
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const cleanedWxid = this.cleanAccountDirName(wxid)
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// 1. 先尝试原始 wxid
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const cacheAccountDirOriginal = join(cachePath, wxid)
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if (existsSync(join(cacheAccountDirOriginal, 'hardlink.db'))) {
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return cacheAccountDirOriginal
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}
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// 2. 再尝试清理后的 wxid
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if (cleanedWxid !== wxid) {
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const cacheAccountDirCleaned = join(cachePath, cleanedWxid)
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if (existsSync(join(cacheAccountDirCleaned, 'hardlink.db'))) {
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return cacheAccountDirCleaned
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}
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}
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// 3. 检查根目录
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if (existsSync(join(cachePath, 'hardlink.db'))) {
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return cachePath
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}
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return null
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}
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private isAccountDir(dirPath: string): boolean {
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return (
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existsSync(join(dirPath, 'hardlink.db')) ||
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existsSync(join(dirPath, 'db_storage')) ||
|
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existsSync(join(dirPath, 'FileStorage', 'Image')) ||
|
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existsSync(join(dirPath, 'FileStorage', 'Image2')) ||
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existsSync(join(dirPath, 'msg', 'attach')) // 新版微信图片存储位置
|
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)
|
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}
|
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private isDirectory(path: string): boolean {
|
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try {
|
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return statSync(path).isDirectory()
|
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} catch {
|
||
return false
|
||
}
|
||
}
|
||
|
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private cleanAccountDirName(dirName: string): string {
|
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const trimmed = dirName.trim()
|
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if (!trimmed) return trimmed
|
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|
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if (trimmed.toLowerCase().startsWith('wxid_')) {
|
||
const match = trimmed.match(/^(wxid_[^_]+)/i)
|
||
if (match) return match[1]
|
||
return trimmed
|
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}
|
||
|
||
const suffixMatch = trimmed.match(/^(.+)_([a-zA-Z0-9]{4})$/)
|
||
if (suffixMatch) return suffixMatch[1]
|
||
|
||
return trimmed
|
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}
|
||
|
||
private async resolveDatPath(
|
||
accountDir: string,
|
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imageMd5?: string,
|
||
imageDatName?: string,
|
||
sessionId?: string,
|
||
options?: { allowThumbnail?: boolean; skipResolvedCache?: boolean }
|
||
): Promise<string | null> {
|
||
const allowThumbnail = options?.allowThumbnail ?? true
|
||
const skipResolvedCache = options?.skipResolvedCache ?? false
|
||
|
||
// 优先通过 hardlink.db 查询
|
||
if (imageMd5) {
|
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const hardlinkPath = this.resolveHardlinkPath(accountDir, imageMd5, sessionId)
|
||
if (hardlinkPath) {
|
||
const isThumb = this.isThumbnailPath(hardlinkPath)
|
||
if (allowThumbnail || !isThumb) {
|
||
this.cacheDatPath(accountDir, imageMd5, hardlinkPath)
|
||
if (imageDatName) this.cacheDatPath(accountDir, imageDatName, hardlinkPath)
|
||
return hardlinkPath
|
||
}
|
||
// hardlink 找到的是缩略图，但要求高清图
|
||
// 尝试在同一目录下查找高清图变体（快速查找，不遍历）
|
||
const hdPath = this.findHdVariantInSameDir(hardlinkPath)
|
||
if (hdPath) {
|
||
this.cacheDatPath(accountDir, imageMd5, hdPath)
|
||
if (imageDatName) this.cacheDatPath(accountDir, imageDatName, hdPath)
|
||
return hdPath
|
||
}
|
||
// 没找到高清图，返回 null（不进行全局搜索）
|
||
return null
|
||
}
|
||
}
|
||
|
||
if (!imageMd5 && imageDatName && this.looksLikeMd5(imageDatName)) {
|
||
const hardlinkPath = this.resolveHardlinkPath(accountDir, imageDatName, sessionId)
|
||
if (hardlinkPath) {
|
||
const isThumb = this.isThumbnailPath(hardlinkPath)
|
||
if (allowThumbnail || !isThumb) {
|
||
this.cacheDatPath(accountDir, imageDatName, hardlinkPath)
|
||
return hardlinkPath
|
||
}
|
||
// hardlink 找到的是缩略图，但要求高清图
|
||
const hdPath = this.findHdVariantInSameDir(hardlinkPath)
|
||
if (hdPath) {
|
||
this.cacheDatPath(accountDir, imageDatName, hdPath)
|
||
return hdPath
|
||
}
|
||
return null
|
||
}
|
||
}
|
||
|
||
if (!imageDatName) {
|
||
return null
|
||
}
|
||
if (!skipResolvedCache) {
|
||
const cached = this.resolvedCache.get(imageDatName)
|
||
if (cached && existsSync(cached)) {
|
||
if (allowThumbnail || !this.isThumbnailPath(cached)) return cached
|
||
// 缓存的是缩略图，尝试找高清图
|
||
const hdPath = this.findHdVariantInSameDir(cached)
|
||
if (hdPath) return hdPath
|
||
}
|
||
}
|
||
|
||
// 只有在 hardlink 完全没有记录时才搜索文件夹
|
||
const datPath = await this.searchDatFile(accountDir, imageDatName, allowThumbnail)
|
||
if (datPath) {
|
||
this.resolvedCache.set(imageDatName, datPath)
|
||
this.cacheDatPath(accountDir, imageDatName, datPath)
|
||
return datPath
|
||
}
|
||
const normalized = this.normalizeDatBase(imageDatName)
|
||
if (normalized !== imageDatName.toLowerCase()) {
|
||
const normalizedPath = await this.searchDatFile(accountDir, normalized, allowThumbnail)
|
||
if (normalizedPath) {
|
||
this.resolvedCache.set(imageDatName, normalizedPath)
|
||
this.cacheDatPath(accountDir, imageDatName, normalizedPath)
|
||
return normalizedPath
|
||
}
|
||
}
|
||
return null
|
||
}
|
||
|
||
/**
|
||
* 在同一目录下查找高清图变体
|
||
* 缩略图: xxx_t.dat -> 高清图: xxx_h.dat 或 xxx.dat
|
||
*/
|
||
private findHdVariantInSameDir(thumbPath: string): string | null {
|
||
try {
|
||
const dir = dirname(thumbPath)
|
||
const fileName = basename(thumbPath).toLowerCase()
|
||
|
||
// 提取基础名称（去掉 _t.dat 或 .t.dat）
|
||
let baseName = fileName
|
||
if (baseName.endsWith('_t.dat')) {
|
||
baseName = baseName.slice(0, -6)
|
||
} else if (baseName.endsWith('.t.dat')) {
|
||
baseName = baseName.slice(0, -6)
|
||
} else {
|
||
return null
|
||
}
|
||
|
||
// 尝试查找高清图变体
|
||
const variants = [
|
||
`${baseName}_h.dat`,
|
||
`${baseName}.h.dat`,
|
||
`${baseName}.dat`
|
||
]
|
||
|
||
for (const variant of variants) {
|
||
const variantPath = join(dir, variant)
|
||
if (existsSync(variantPath)) {
|
||
return variantPath
|
||
}
|
||
}
|
||
} catch { }
|
||
return null
|
||
}
|
||
|
||
private async resolveThumbnailDatPath(
|
||
accountDir: string,
|
||
imageMd5?: string,
|
||
imageDatName?: string,
|
||
sessionId?: string
|
||
): Promise<string | null> {
|
||
if (imageMd5) {
|
||
const hardlinkPath = this.resolveHardlinkPath(accountDir, imageMd5, sessionId)
|
||
if (hardlinkPath && this.isThumbnailPath(hardlinkPath)) return hardlinkPath
|
||
}
|
||
|
||
if (!imageMd5 && imageDatName && this.looksLikeMd5(imageDatName)) {
|
||
const hardlinkPath = this.resolveHardlinkPath(accountDir, imageDatName, sessionId)
|
||
if (hardlinkPath && this.isThumbnailPath(hardlinkPath)) return hardlinkPath
|
||
}
|
||
|
||
if (!imageDatName) return null
|
||
return this.searchDatFile(accountDir, imageDatName, true, true)
|
||
}
|
||
|
||
private async checkHasUpdate(
|
||
payload: { sessionId?: string; imageMd5?: string; imageDatName?: string },
|
||
cacheKey: string,
|
||
cachedPath: string
|
||
): Promise<boolean> {
|
||
if (!cachedPath || !existsSync(cachedPath)) return false
|
||
const isThumbnail = this.isThumbnailPath(cachedPath)
|
||
if (!isThumbnail) return false
|
||
const wxid = this.configService.get('myWxid')
|
||
const dbPath = this.configService.get('dbPath')
|
||
if (!wxid || !dbPath) return false
|
||
const accountDir = this.resolveAccountDir(dbPath, wxid)
|
||
if (!accountDir) return false
|
||
|
||
const quickDir = this.getCachedDatDir(accountDir, payload.imageDatName, payload.imageMd5)
|
||
if (quickDir) {
|
||
const baseName = payload.imageDatName || payload.imageMd5 || cacheKey
|
||
const candidate = this.findNonThumbnailVariantInDir(quickDir, baseName)
|
||
if (candidate) {
|
||
return true
|
||
}
|
||
}
|
||
|
||
const thumbPath = await this.resolveThumbnailDatPath(
|
||
accountDir,
|
||
payload.imageMd5,
|
||
payload.imageDatName,
|
||
payload.sessionId
|
||
)
|
||
if (thumbPath) {
|
||
const baseName = payload.imageDatName || payload.imageMd5 || cacheKey
|
||
const candidate = this.findNonThumbnailVariantInDir(dirname(thumbPath), baseName)
|
||
if (candidate) {
|
||
return true
|
||
}
|
||
const searchHit = await this.searchDatFileInDir(dirname(thumbPath), baseName, false)
|
||
if (searchHit && this.isNonThumbnailVariantDat(searchHit)) {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
private triggerUpdateCheck(
|
||
payload: { sessionId?: string; imageMd5?: string; imageDatName?: string },
|
||
cacheKey: string,
|
||
cachedPath: string
|
||
): void {
|
||
if (this.updateFlags.get(cacheKey)) return
|
||
void this.checkHasUpdate(payload, cacheKey, cachedPath).then((hasUpdate) => {
|
||
if (!hasUpdate) return
|
||
this.updateFlags.set(cacheKey, true)
|
||
this.emitImageUpdate(payload, cacheKey)
|
||
}).catch(() => { })
|
||
}
|
||
|
||
private looksLikeMd5(value: string): boolean {
|
||
return /^[a-fA-F0-9]{16,32}$/.test(value)
|
||
}
|
||
|
||
private resolveHardlinkPath(accountDir: string, md5: string, sessionId?: string): string | null {
|
||
// 优先从解密后的缓存目录查找 hardlink.db
|
||
const wxid = this.configService.get('myWxid')
|
||
const cacheDir = wxid ? this.getDecryptedCacheDir(wxid) : null
|
||
|
||
// 收集所有可能的 hardlink.db 路径
|
||
const hardlinkPaths: string[] = []
|
||
if (cacheDir) {
|
||
const cachePath = join(cacheDir, 'hardlink.db')
|
||
if (existsSync(cachePath)) hardlinkPaths.push(cachePath)
|
||
}
|
||
const accountPath = join(accountDir, 'hardlink.db')
|
||
if (existsSync(accountPath) && !hardlinkPaths.includes(accountPath)) {
|
||
hardlinkPaths.push(accountPath)
|
||
}
|
||
|
||
if (hardlinkPaths.length === 0) {
|
||
return null
|
||
}
|
||
|
||
// 依次尝试每个 hardlink.db
|
||
for (const hardlinkPath of hardlinkPaths) {
|
||
try {
|
||
const state = this.getHardlinkState(hardlinkPath, hardlinkPath)
|
||
if (!state.imageTable) {
|
||
continue
|
||
}
|
||
|
||
const row = state.db
|
||
.prepare(`SELECT dir1, dir2, file_name FROM ${state.imageTable} WHERE lower(md5) = lower(?) LIMIT 1`)
|
||
.get(md5) as { dir1?: number; dir2?: number; file_name?: string } | undefined
|
||
|
||
if (!row) {
|
||
continue
|
||
}
|
||
|
||
const { dir1, dir2, file_name: fileName } = row
|
||
if (dir1 === undefined || dir2 === undefined || !fileName) continue
|
||
|
||
const lowerFileName = fileName.toLowerCase()
|
||
if (lowerFileName.endsWith('.dat')) {
|
||
const baseLower = lowerFileName.slice(0, -4)
|
||
if (!this.isLikelyImageDatBase(baseLower) && !this.looksLikeMd5(baseLower)) {
|
||
continue
|
||
}
|
||
}
|
||
|
||
// dir1 和 dir2 是 rowid，需要从 dir2id 表查询对应的目录名
|
||
let dir1Name: string | null = null
|
||
let dir2Name: string | null = null
|
||
|
||
if (state.dirTable) {
|
||
try {
|
||
// 通过 rowid 查询目录名
|
||
const dir1Row = state.db
|
||
.prepare(`SELECT username FROM ${state.dirTable} WHERE rowid = ? LIMIT 1`)
|
||
.get(dir1) as { username?: string } | undefined
|
||
if (dir1Row?.username) dir1Name = dir1Row.username
|
||
|
||
const dir2Row = state.db
|
||
.prepare(`SELECT username FROM ${state.dirTable} WHERE rowid = ? LIMIT 1`)
|
||
.get(dir2) as { username?: string } | undefined
|
||
if (dir2Row?.username) dir2Name = dir2Row.username
|
||
} catch {
|
||
// ignore
|
||
}
|
||
}
|
||
|
||
if (!dir1Name || !dir2Name) {
|
||
continue
|
||
}
|
||
|
||
// 构建可能的所有路径结构（仅限 msg/attach）
|
||
const possiblePaths = [
|
||
// 常见结构: msg/attach/xx/yy/Img/name
|
||
join(accountDir, 'msg', 'attach', dir1Name, dir2Name, 'Img', fileName),
|
||
join(accountDir, 'msg', 'attach', dir1Name, dir2Name, 'mg', fileName),
|
||
join(accountDir, 'msg', 'attach', dir1Name, dir2Name, fileName),
|
||
]
|
||
|
||
for (const fullPath of possiblePaths) {
|
||
if (existsSync(fullPath)) {
|
||
return fullPath
|
||
}
|
||
}
|
||
} catch {
|
||
// ignore
|
||
}
|
||
}
|
||
|
||
return null
|
||
}
|
||
|
||
private getHardlinkState(accountDir: string, hardlinkPath: string): HardlinkState {
|
||
const cached = this.hardlinkCache.get(accountDir)
|
||
if (cached) return cached
|
||
|
||
const db = new Database(hardlinkPath, { readonly: true, fileMustExist: true })
|
||
const imageRow = db
|
||
.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name LIKE 'image_hardlink_info%' ORDER BY name DESC LIMIT 1")
|
||
.get() as { name?: string } | undefined
|
||
const dirRow = db
|
||
.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name LIKE 'dir2id%' LIMIT 1")
|
||
.get() as { name?: string } | undefined
|
||
const state: HardlinkState = {
|
||
db,
|
||
imageTable: imageRow?.name as string | undefined,
|
||
dirTable: dirRow?.name as string | undefined
|
||
}
|
||
this.hardlinkCache.set(accountDir, state)
|
||
return state
|
||
}
|
||
|
||
private async searchDatFile(
|
||
accountDir: string,
|
||
datName: string,
|
||
allowThumbnail = true,
|
||
thumbOnly = false
|
||
): Promise<string | null> {
|
||
const key = `${accountDir}|${datName}`
|
||
const cached = this.resolvedCache.get(key)
|
||
if (cached && existsSync(cached)) {
|
||
if (allowThumbnail || !this.isThumbnailPath(cached)) return cached
|
||
}
|
||
|
||
const root = join(accountDir, 'msg', 'attach')
|
||
if (!existsSync(root)) return null
|
||
const found = await this.walkForDatInWorker(root, datName.toLowerCase(), 8, allowThumbnail, thumbOnly)
|
||
if (found) {
|
||
this.resolvedCache.set(key, found)
|
||
return found
|
||
}
|
||
return null
|
||
}
|
||
|
||
private async searchDatFileInDir(
|
||
dirPath: string,
|
||
datName: string,
|
||
allowThumbnail = true
|
||
): Promise<string | null> {
|
||
if (!existsSync(dirPath)) return null
|
||
return await this.walkForDatInWorker(dirPath, datName.toLowerCase(), 3, allowThumbnail, false)
|
||
}
|
||
|
||
private async walkForDatInWorker(
|
||
root: string,
|
||
datName: string,
|
||
maxDepth = 4,
|
||
allowThumbnail = true,
|
||
thumbOnly = false
|
||
): Promise<string | null> {
|
||
// 简化为直接在主线程搜索，避免 worker 文件找不到的问题
|
||
// 使用非递归遍历以防止栈溢出，限制深度
|
||
const queue: { path: string; depth: number }[] = [{ path: root, depth: 0 }]
|
||
const targetBase = this.normalizeDatBase(datName.toLowerCase())
|
||
|
||
while (queue.length > 0) {
|
||
const { path: currentPath, depth } = queue.shift()!
|
||
if (depth > maxDepth) continue
|
||
|
||
try {
|
||
const entries = readdirSync(currentPath, { withFileTypes: true })
|
||
for (const entry of entries) {
|
||
const fullPath = join(currentPath, entry.name)
|
||
|
||
if (entry.isDirectory()) {
|
||
// 优化：只进入特定的图片存储相关目录
|
||
const lowerName = entry.name.toLowerCase()
|
||
// 顶层目录过滤
|
||
if (depth === 0) {
|
||
if (['image', 'image2', 'msg', 'attach', 'img'].some(k => lowerName.includes(k))) {
|
||
queue.push({ path: fullPath, depth: depth + 1 })
|
||
}
|
||
} else {
|
||
// 子目录一般直接进入，因为结构比较复杂
|
||
queue.push({ path: fullPath, depth: depth + 1 })
|
||
}
|
||
} else if (entry.isFile()) {
|
||
// 匹配文件
|
||
const lowerName = entry.name.toLowerCase()
|
||
if (!lowerName.endsWith('.dat')) continue
|
||
|
||
// 缩略图检查
|
||
const isThumb = this.isThumbnailDat(lowerName)
|
||
if (thumbOnly && !isThumb) continue
|
||
if (!allowThumbnail && isThumb) continue
|
||
|
||
// 匹配逻辑
|
||
if (this.matchesDatName(entry.name, datName)) {
|
||
return fullPath
|
||
}
|
||
}
|
||
}
|
||
} catch (e) {
|
||
// 忽略无法访问的目录
|
||
}
|
||
}
|
||
return null
|
||
}
|
||
|
||
private matchesDatName(fileName: string, datName: string): boolean {
|
||
const lower = fileName.toLowerCase()
|
||
const base = lower.endsWith('.dat') ? lower.slice(0, -4) : lower
|
||
const normalizedBase = this.normalizeDatBase(base)
|
||
const normalizedTarget = this.normalizeDatBase(datName.toLowerCase())
|
||
if (normalizedBase === normalizedTarget) return true
|
||
const pattern = new RegExp(`^${datName}(?:[._][a-z])?\\.dat$`, 'i')
|
||
if (pattern.test(lower)) return true
|
||
return lower.endsWith('.dat') && lower.includes(datName)
|
||
}
|
||
|
||
private scoreDatName(fileName: string): number {
|
||
if (fileName.includes('.t.dat') || fileName.includes('_t.dat')) return 1
|
||
if (fileName.includes('.c.dat') || fileName.includes('_c.dat')) return 1
|
||
return 2
|
||
}
|
||
|
||
private isThumbnailDat(fileName: string): boolean {
|
||
const lower = fileName.toLowerCase()
|
||
return (
|
||
lower.includes('.t.dat') ||
|
||
lower.includes('_t.dat') ||
|
||
lower.includes('_thumb.dat')
|
||
)
|
||
}
|
||
|
||
private hasXVariant(baseLower: string): boolean {
|
||
return /[._][a-z]$/.test(baseLower)
|
||
}
|
||
|
||
private isThumbnailPath(filePath: string): boolean {
|
||
const lower = basename(filePath).toLowerCase()
|
||
if (this.isThumbnailDat(lower)) return true
|
||
const ext = extname(lower)
|
||
const base = ext ? lower.slice(0, -ext.length) : lower
|
||
// 支持新命名 _thumb 和旧命名 _t
|
||
return (
|
||
base.endsWith('_t') ||
|
||
base.endsWith('_thumb') ||
|
||
base.endsWith('.t')
|
||
)
|
||
}
|
||
|
||
private isHdPath(filePath: string): boolean {
|
||
const lower = basename(filePath).toLowerCase()
|
||
const ext = extname(lower)
|
||
const base = ext ? lower.slice(0, -ext.length) : lower
|
||
return base.endsWith('_hd') || base.endsWith('_h')
|
||
}
|
||
|
||
private hasImageVariantSuffix(baseLower: string): boolean {
|
||
return /[._][a-z]$/.test(baseLower)
|
||
}
|
||
|
||
private isLikelyImageDatBase(baseLower: string): boolean {
|
||
return this.hasImageVariantSuffix(baseLower) || this.looksLikeMd5(baseLower)
|
||
}
|
||
|
||
private normalizeDatBase(name: string): string {
|
||
let base = name.toLowerCase()
|
||
if (base.endsWith('.dat') || base.endsWith('.jpg')) {
|
||
base = base.slice(0, -4)
|
||
}
|
||
while (/[._][a-z]$/.test(base)) {
|
||
base = base.slice(0, -2)
|
||
}
|
||
return base
|
||
}
|
||
|
||
private findCachedOutput(cacheKey: string, sessionId?: string, preferHd: boolean = false): string | null {
|
||
const allRoots = this.getAllCacheRoots()
|
||
const normalizedKey = this.normalizeDatBase(cacheKey.toLowerCase())
|
||
const extensions = ['.jpg', '.jpeg', '.png', '.gif', '.webp']
|
||
|
||
// 遍历所有可能的缓存根路径
|
||
for (const root of allRoots) {
|
||
// 新目录结构: Images/{sessionId}/{年-月}/{文件名}_thumb.jpg 或 _hd.jpg
|
||
// 需要遍历 sessionId 目录下的所有日期目录
|
||
if (sessionId) {
|
||
const sessionDir = join(root, sessionId)
|
||
if (existsSync(sessionDir)) {
|
||
try {
|
||
const dateDirs = readdirSync(sessionDir, { withFileTypes: true })
|
||
.filter(d => d.isDirectory() && /^\d{4}-\d{2}$/.test(d.name))
|
||
.map(d => d.name)
|
||
.sort()
|
||
.reverse() // 最新的日期优先
|
||
|
||
for (const dateDir of dateDirs) {
|
||
const imageDir = join(sessionDir, dateDir)
|
||
// 清理旧的 .hevc 文件
|
||
this.cleanupHevcFiles(imageDir, normalizedKey)
|
||
for (const ext of extensions) {
|
||
if (preferHd) {
|
||
const hdPath = join(imageDir, `${normalizedKey}_hd${ext}`)
|
||
if (existsSync(hdPath)) return hdPath
|
||
}
|
||
const thumbPath = join(imageDir, `${normalizedKey}_thumb${ext}`)
|
||
if (existsSync(thumbPath)) return thumbPath
|
||
if (!preferHd) {
|
||
const hdPath = join(imageDir, `${normalizedKey}_hd${ext}`)
|
||
if (existsSync(hdPath)) return hdPath
|
||
}
|
||
}
|
||
}
|
||
} catch { }
|
||
}
|
||
}
|
||
|
||
// 遍历所有 sessionId 目录查找
|
||
try {
|
||
const sessionDirs = readdirSync(root, { withFileTypes: true })
|
||
.filter(d => d.isDirectory())
|
||
.map(d => d.name)
|
||
|
||
for (const session of sessionDirs) {
|
||
const sessionDir = join(root, session)
|
||
// 检查是否是日期目录结构
|
||
try {
|
||
const subDirs = readdirSync(sessionDir, { withFileTypes: true })
|
||
.filter(d => d.isDirectory() && /^\d{4}-\d{2}$/.test(d.name))
|
||
.map(d => d.name)
|
||
|
||
for (const dateDir of subDirs) {
|
||
const imageDir = join(sessionDir, dateDir)
|
||
// 清理旧的 .hevc 文件
|
||
this.cleanupHevcFiles(imageDir, normalizedKey)
|
||
for (const ext of extensions) {
|
||
if (preferHd) {
|
||
const hdPath = join(imageDir, `${normalizedKey}_hd${ext}`)
|
||
if (existsSync(hdPath)) return hdPath
|
||
}
|
||
const thumbPath = join(imageDir, `${normalizedKey}_thumb${ext}`)
|
||
if (existsSync(thumbPath)) return thumbPath
|
||
if (!preferHd) {
|
||
const hdPath = join(imageDir, `${normalizedKey}_hd${ext}`)
|
||
if (existsSync(hdPath)) return hdPath
|
||
}
|
||
}
|
||
}
|
||
} catch { }
|
||
}
|
||
} catch { }
|
||
|
||
// 兼容旧目录结构: Images/{normalizedKey}/{normalizedKey}_thumb.jpg
|
||
const oldImageDir = join(root, normalizedKey)
|
||
if (existsSync(oldImageDir)) {
|
||
// 清理旧的 .hevc 文件
|
||
this.cleanupHevcFiles(oldImageDir, normalizedKey)
|
||
for (const ext of extensions) {
|
||
if (preferHd) {
|
||
const hdPath = join(oldImageDir, `${normalizedKey}_hd${ext}`)
|
||
if (existsSync(hdPath)) return hdPath
|
||
}
|
||
const thumbPath = join(oldImageDir, `${normalizedKey}_thumb${ext}`)
|
||
if (existsSync(thumbPath)) return thumbPath
|
||
if (!preferHd) {
|
||
const hdPath = join(oldImageDir, `${normalizedKey}_hd${ext}`)
|
||
if (existsSync(hdPath)) return hdPath
|
||
}
|
||
}
|
||
}
|
||
|
||
// 兼容最旧的平铺结构
|
||
for (const ext of extensions) {
|
||
const candidate = join(root, `${cacheKey}${ext}`)
|
||
if (existsSync(candidate)) return candidate
|
||
}
|
||
}
|
||
|
||
return null
|
||
}
|
||
|
||
/**
|
||
* 清理旧的 .hevc 文件（ffmpeg 转换失败时遗留的）
|
||
*/
|
||
private cleanupHevcFiles(dirPath: string, normalizedKey: string): void {
|
||
try {
|
||
const hevcThumb = join(dirPath, `${normalizedKey}_thumb.hevc`)
|
||
const hevcHd = join(dirPath, `${normalizedKey}_hd.hevc`)
|
||
if (existsSync(hevcThumb)) unlinkSync(hevcThumb)
|
||
if (existsSync(hevcHd)) unlinkSync(hevcHd)
|
||
} catch { }
|
||
}
|
||
|
||
/**
|
||
* 从 DAT 路径中提取日期（年-月）
|
||
* 路径格式: .../2026-01/Img/xxx.dat
|
||
*/
|
||
private extractDateFromPath(datPath: string): string {
|
||
// 匹配 yyyy-MM 格式的日期目录
|
||
const match = datPath.match(/[\\\/](\d{4}-\d{2})[\\\/]/i)
|
||
if (match) {
|
||
return match[1]
|
||
}
|
||
// 如果没找到，使用当前日期
|
||
const now = new Date()
|
||
return `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, '0')}`
|
||
}
|
||
|
||
/**
|
||
* 生成缓存输出路径
|
||
* 格式: Images/{sessionId}/{年-月}/{文件名}_thumb.jpg 或 _hd.jpg
|
||
*/
|
||
private getCacheOutputPathFromDat(datPath: string, ext: string, sessionId?: string): string {
|
||
const name = basename(datPath)
|
||
const lower = name.toLowerCase()
|
||
const base = lower.endsWith('.dat') ? name.slice(0, -4) : name
|
||
|
||
// 提取基础名称（去掉 _t, _h 等后缀）
|
||
const normalizedBase = this.normalizeDatBase(base)
|
||
|
||
// 判断是缩略图还是高清图
|
||
const isThumb = this.isThumbnailDat(lower)
|
||
const suffix = isThumb ? '_thumb' : '_hd'
|
||
|
||
// 提取日期
|
||
const dateDir = this.extractDateFromPath(datPath)
|
||
|
||
// 使用 sessionId 或 'unknown' 作为会话目录
|
||
const sessionDir = sessionId || 'unknown'
|
||
|
||
// 分级存储: Images/{sessionId}/{年-月}/{文件名}_thumb.jpg
|
||
const imageDir = join(this.getCacheRoot(), sessionDir, dateDir)
|
||
if (!existsSync(imageDir)) {
|
||
mkdirSync(imageDir, { recursive: true })
|
||
}
|
||
|
||
return join(imageDir, `${normalizedBase}${suffix}${ext}`)
|
||
}
|
||
|
||
private cacheResolvedPaths(cacheKey: string, imageMd5: string | undefined, imageDatName: string | undefined, outputPath: string): void {
|
||
this.resolvedCache.set(cacheKey, outputPath)
|
||
if (imageMd5 && imageMd5 !== cacheKey) {
|
||
this.resolvedCache.set(imageMd5, outputPath)
|
||
}
|
||
if (imageDatName && imageDatName !== cacheKey && imageDatName !== imageMd5) {
|
||
this.resolvedCache.set(imageDatName, outputPath)
|
||
}
|
||
}
|
||
|
||
private getCacheKeys(payload: { imageMd5?: string; imageDatName?: string }): string[] {
|
||
const keys: string[] = []
|
||
const addKey = (value?: string) => {
|
||
if (!value) return
|
||
const lower = value.toLowerCase()
|
||
if (!keys.includes(value)) keys.push(value)
|
||
if (!keys.includes(lower)) keys.push(lower)
|
||
const normalized = this.normalizeDatBase(lower)
|
||
if (normalized && !keys.includes(normalized)) keys.push(normalized)
|
||
}
|
||
addKey(payload.imageMd5)
|
||
if (payload.imageDatName && payload.imageDatName !== payload.imageMd5) {
|
||
addKey(payload.imageDatName)
|
||
}
|
||
return keys
|
||
}
|
||
|
||
private cacheDatPath(accountDir: string, datName: string, datPath: string): void {
|
||
const key = `${accountDir}|${datName}`
|
||
this.resolvedCache.set(key, datPath)
|
||
const normalized = this.normalizeDatBase(datName)
|
||
if (normalized && normalized !== datName.toLowerCase()) {
|
||
this.resolvedCache.set(`${accountDir}|${normalized}`, datPath)
|
||
}
|
||
}
|
||
|
||
private clearUpdateFlags(cacheKey: string, imageMd5?: string, imageDatName?: string): void {
|
||
this.updateFlags.delete(cacheKey)
|
||
if (imageMd5) this.updateFlags.delete(imageMd5)
|
||
if (imageDatName) this.updateFlags.delete(imageDatName)
|
||
}
|
||
|
||
private getCachedDatDir(accountDir: string, imageDatName?: string, imageMd5?: string): string | null {
|
||
const keys = [
|
||
imageDatName ? `${accountDir}|${imageDatName}` : null,
|
||
imageDatName ? `${accountDir}|${this.normalizeDatBase(imageDatName)}` : null,
|
||
imageMd5 ? `${accountDir}|${imageMd5}` : null
|
||
].filter(Boolean) as string[]
|
||
for (const key of keys) {
|
||
const cached = this.resolvedCache.get(key)
|
||
if (cached && existsSync(cached)) return dirname(cached)
|
||
}
|
||
return null
|
||
}
|
||
|
||
private findNonThumbnailVariantInDir(dirPath: string, baseName: string): string | null {
|
||
let entries: string[]
|
||
try {
|
||
entries = readdirSync(dirPath)
|
||
} catch {
|
||
return null
|
||
}
|
||
const target = this.normalizeDatBase(baseName.toLowerCase())
|
||
for (const entry of entries) {
|
||
const lower = entry.toLowerCase()
|
||
if (!lower.endsWith('.dat')) continue
|
||
if (this.isThumbnailDat(lower)) continue
|
||
if (!this.hasXVariant(lower.slice(0, -4))) continue
|
||
const baseLower = lower.slice(0, -4)
|
||
if (this.normalizeDatBase(baseLower) !== target) continue
|
||
return join(dirPath, entry)
|
||
}
|
||
return null
|
||
}
|
||
|
||
private isNonThumbnailVariantDat(datPath: string): boolean {
|
||
const lower = basename(datPath).toLowerCase()
|
||
if (!lower.endsWith('.dat')) return false
|
||
if (this.isThumbnailDat(lower)) return false
|
||
const baseLower = lower.slice(0, -4)
|
||
return this.hasXVariant(baseLower)
|
||
}
|
||
|
||
private emitImageUpdate(payload: { sessionId?: string; imageMd5?: string; imageDatName?: string }, cacheKey: string): void {
|
||
const message = { cacheKey, imageMd5: payload.imageMd5, imageDatName: payload.imageDatName }
|
||
for (const win of BrowserWindow.getAllWindows()) {
|
||
if (!win.isDestroyed()) {
|
||
win.webContents.send('image:updateAvailable', message)
|
||
}
|
||
}
|
||
}
|
||
|
||
private emitCacheResolved(payload: { sessionId?: string; imageMd5?: string; imageDatName?: string }, cacheKey: string, localPath: string): void {
|
||
const message = { cacheKey, imageMd5: payload.imageMd5, imageDatName: payload.imageDatName, localPath }
|
||
for (const win of BrowserWindow.getAllWindows()) {
|
||
if (!win.isDestroyed()) {
|
||
win.webContents.send('image:cacheResolved', message)
|
||
}
|
||
}
|
||
}
|
||
|
||
private async ensureCacheIndexed(): Promise<void> {
|
||
if (this.cacheIndexed) return
|
||
if (this.cacheIndexing) return this.cacheIndexing
|
||
this.cacheIndexing = new Promise((resolve) => {
|
||
const allRoots = this.getAllCacheRoots()
|
||
const extensions = ['.jpg', '.jpeg', '.png', '.gif', '.webp']
|
||
|
||
for (const root of allRoots) {
|
||
let entries: string[]
|
||
try {
|
||
entries = readdirSync(root)
|
||
} catch {
|
||
continue
|
||
}
|
||
for (const entry of entries) {
|
||
const lower = entry.toLowerCase()
|
||
const ext = extensions.find((item) => lower.endsWith(item))
|
||
if (!ext) continue
|
||
const fullPath = join(root, entry)
|
||
try {
|
||
if (!statSync(fullPath).isFile()) continue
|
||
} catch {
|
||
continue
|
||
}
|
||
const base = entry.slice(0, -ext.length)
|
||
this.addCacheIndex(base, fullPath)
|
||
const normalized = this.normalizeDatBase(base)
|
||
if (normalized && normalized !== base.toLowerCase()) {
|
||
this.addCacheIndex(normalized, fullPath)
|
||
}
|
||
}
|
||
}
|
||
this.cacheIndexed = true
|
||
this.cacheIndexing = null
|
||
resolve()
|
||
})
|
||
return this.cacheIndexing
|
||
}
|
||
|
||
private addCacheIndex(key: string, path: string): void {
|
||
const normalizedKey = key.toLowerCase()
|
||
const existing = this.resolvedCache.get(normalizedKey)
|
||
if (existing) {
|
||
const existingIsThumb = this.isThumbnailPath(existing)
|
||
const candidateIsThumb = this.isThumbnailPath(path)
|
||
if (!existingIsThumb && candidateIsThumb) return
|
||
}
|
||
this.resolvedCache.set(normalizedKey, path)
|
||
}
|
||
|
||
/**
|
||
* 获取默认缓存路径（与 dataManagementService 保持一致）
|
||
*/
|
||
private getDefaultCachePath(): string {
|
||
// 开发环境使用文档目录
|
||
if (process.env.VITE_DEV_SERVER_URL) {
|
||
const documentsPath = app.getPath('documents')
|
||
return join(documentsPath, 'CipherTalkData')
|
||
}
|
||
|
||
// 生产环境
|
||
const exePath = app.getPath('exe')
|
||
const installDir = require('path').dirname(exePath)
|
||
|
||
// 检查是否安装在 C 盘
|
||
const isOnCDrive = /^[cC]:/i.test(installDir) || installDir.startsWith('\\\\')
|
||
|
||
if (isOnCDrive) {
|
||
const documentsPath = app.getPath('documents')
|
||
return join(documentsPath, 'CipherTalkData')
|
||
}
|
||
|
||
return join(installDir, 'CipherTalkData')
|
||
}
|
||
|
||
private getCacheRoot(): string {
|
||
const configured = this.configService.get('cachePath')
|
||
const root = configured
|
||
? join(configured, 'Images')
|
||
: join(this.getDefaultCachePath(), 'Images')
|
||
if (!existsSync(root)) {
|
||
mkdirSync(root, { recursive: true })
|
||
}
|
||
return root
|
||
}
|
||
|
||
/**
|
||
* 获取所有可能的缓存根路径（用于查找已缓存的图片）
|
||
* 包含新路径和旧的 CipherTalk/Images 路径
|
||
*/
|
||
private getAllCacheRoots(): string[] {
|
||
const roots: string[] = []
|
||
const configured = this.configService.get('cachePath')
|
||
const documentsPath = app.getPath('documents')
|
||
|
||
// 主要路径（当前使用的）
|
||
const mainRoot = this.getCacheRoot()
|
||
roots.push(mainRoot)
|
||
|
||
// 如果配置了自定义路径，也检查其下的 Images
|
||
if (configured) {
|
||
roots.push(join(configured, 'Images'))
|
||
roots.push(join(configured, 'images'))
|
||
}
|
||
|
||
// 默认路径
|
||
const defaultPath = this.getDefaultCachePath()
|
||
roots.push(join(defaultPath, 'Images'))
|
||
roots.push(join(defaultPath, 'images'))
|
||
|
||
// 兼容旧的 CipherTalk/Images 路径
|
||
const oldPath = join(documentsPath, 'CipherTalk', 'Images')
|
||
roots.push(oldPath)
|
||
|
||
// 去重
|
||
const uniqueRoots = Array.from(new Set(roots))
|
||
// 过滤存在的路径
|
||
const existingRoots = uniqueRoots.filter(r => existsSync(r))
|
||
|
||
return existingRoots
|
||
}
|
||
|
||
private resolveAesKey(aesKeyRaw: string): Buffer | null {
|
||
const trimmed = aesKeyRaw?.trim() ?? ''
|
||
if (!trimmed) return null
|
||
return this.asciiKey16(trimmed)
|
||
}
|
||
|
||
private async decryptDatAuto(datPath: string, xorKey: number, aesKey: Buffer | null): Promise<Buffer> {
|
||
const version = this.getDatVersion(datPath)
|
||
|
||
if (version === 0) {
|
||
return this.decryptDatV3(datPath, xorKey)
|
||
}
|
||
if (version === 1) {
|
||
const key = this.asciiKey16(this.defaultV1AesKey)
|
||
return this.decryptDatV4(datPath, xorKey, key)
|
||
}
|
||
// version === 2
|
||
if (!aesKey || aesKey.length !== 16) {
|
||
throw new Error('请到设置配置图片解密密钥')
|
||
}
|
||
return this.decryptDatV4(datPath, xorKey, aesKey)
|
||
}
|
||
|
||
public decryptDatFile(inputPath: string, xorKey: number, aesKey?: Buffer): Buffer {
|
||
const version = this.getDatVersion(inputPath)
|
||
if (version === 0) {
|
||
return this.decryptDatV3(inputPath, xorKey)
|
||
} else if (version === 1) {
|
||
const key = this.asciiKey16(this.defaultV1AesKey)
|
||
return this.decryptDatV4(inputPath, xorKey, key)
|
||
} else {
|
||
if (!aesKey || aesKey.length !== 16) {
|
||
throw new Error('V4版本需要16字节AES密钥')
|
||
}
|
||
return this.decryptDatV4(inputPath, xorKey, aesKey)
|
||
}
|
||
}
|
||
|
||
public getDatVersion(inputPath: string): number {
|
||
if (!existsSync(inputPath)) {
|
||
throw new Error('文件不存在')
|
||
}
|
||
const bytes = readFileSync(inputPath)
|
||
if (bytes.length < 6) {
|
||
return 0
|
||
}
|
||
const signature = bytes.subarray(0, 6)
|
||
if (this.compareBytes(signature, Buffer.from([0x07, 0x08, 0x56, 0x31, 0x08, 0x07]))) {
|
||
return 1
|
||
}
|
||
if (this.compareBytes(signature, Buffer.from([0x07, 0x08, 0x56, 0x32, 0x08, 0x07]))) {
|
||
return 2
|
||
}
|
||
return 0
|
||
}
|
||
|
||
private decryptDatV3(inputPath: string, xorKey: number): Buffer {
|
||
const data = readFileSync(inputPath)
|
||
const out = Buffer.alloc(data.length)
|
||
for (let i = 0; i < data.length; i += 1) {
|
||
out[i] = data[i] ^ xorKey
|
||
}
|
||
return out
|
||
}
|
||
|
||
private decryptDatV4(inputPath: string, xorKey: number, aesKey: Buffer): Buffer {
|
||
const bytes = readFileSync(inputPath)
|
||
if (bytes.length < 0x0f) {
|
||
throw new Error('文件太小，无法解析')
|
||
}
|
||
|
||
const header = bytes.subarray(0, 0x0f)
|
||
const data = bytes.subarray(0x0f)
|
||
const aesSize = this.bytesToInt32(header.subarray(6, 10))
|
||
const xorSize = this.bytesToInt32(header.subarray(10, 14))
|
||
|
||
// AES 数据需要对齐到 16 字节（PKCS7 填充）
|
||
// 当 aesSize % 16 === 0 时，仍需要额外 16 字节的填充
|
||
const remainder = ((aesSize % 16) + 16) % 16
|
||
const alignedAesSize = aesSize + (16 - remainder)
|
||
|
||
if (alignedAesSize > data.length) {
|
||
throw new Error('文件格式异常：AES 数据长度超过文件实际长度')
|
||
}
|
||
|
||
const aesData = data.subarray(0, alignedAesSize)
|
||
let unpadded: Buffer = Buffer.alloc(0)
|
||
if (aesData.length > 0) {
|
||
const decipher = crypto.createDecipheriv('aes-128-ecb', aesKey, null)
|
||
decipher.setAutoPadding(false)
|
||
const decrypted = Buffer.concat([decipher.update(aesData), decipher.final()])
|
||
|
||
// 使用 PKCS7 填充移除
|
||
unpadded = this.strictRemovePadding(decrypted)
|
||
}
|
||
|
||
const remaining = data.subarray(alignedAesSize)
|
||
if (xorSize < 0 || xorSize > remaining.length) {
|
||
throw new Error('文件格式异常：XOR 数据长度不合法')
|
||
}
|
||
|
||
let rawData = Buffer.alloc(0)
|
||
let xoredData = Buffer.alloc(0)
|
||
if (xorSize > 0) {
|
||
const rawLength = remaining.length - xorSize
|
||
if (rawLength < 0) {
|
||
throw new Error('文件格式异常：原始数据长度小于XOR长度')
|
||
}
|
||
rawData = remaining.subarray(0, rawLength)
|
||
const xorData = remaining.subarray(rawLength)
|
||
xoredData = Buffer.alloc(xorData.length)
|
||
for (let i = 0; i < xorData.length; i += 1) {
|
||
xoredData[i] = xorData[i] ^ xorKey
|
||
}
|
||
} else {
|
||
rawData = remaining
|
||
xoredData = Buffer.alloc(0)
|
||
}
|
||
|
||
return Buffer.concat([unpadded, rawData, xoredData])
|
||
}
|
||
|
||
private bytesToInt32(bytes: Buffer): number {
|
||
if (bytes.length !== 4) {
|
||
throw new Error('需要4个字节')
|
||
}
|
||
return bytes[0] | (bytes[1] << 8) | (bytes[2] << 16) | (bytes[3] << 24)
|
||
}
|
||
|
||
asciiKey16(keyString: string): Buffer {
|
||
if (keyString.length < 16) {
|
||
throw new Error('AES密钥至少需要16个字符')
|
||
}
|
||
return Buffer.from(keyString, 'ascii').subarray(0, 16)
|
||
}
|
||
|
||
private strictRemovePadding(data: Buffer): Buffer {
|
||
if (!data.length) {
|
||
throw new Error('解密结果为空，填充非法')
|
||
}
|
||
const paddingLength = data[data.length - 1]
|
||
if (paddingLength === 0 || paddingLength > 16 || paddingLength > data.length) {
|
||
throw new Error('PKCS7 填充长度非法')
|
||
}
|
||
for (let i = data.length - paddingLength; i < data.length; i += 1) {
|
||
if (data[i] !== paddingLength) {
|
||
throw new Error('PKCS7 填充内容非法')
|
||
}
|
||
}
|
||
return data.subarray(0, data.length - paddingLength)
|
||
}
|
||
|
||
/**
|
||
* 解包 wxgf 格式
|
||
* wxgf 是微信的图片格式，内部使用 HEVC 编码
|
||
* 参考：https://sarv.blog/posts/wxam/
|
||
*
|
||
* wxgf 文件结构:
|
||
* - 4 bytes: magic "wxgf" (77 78 67 66)
|
||
* - 后续是分片数据，每个分片包含 HEVC NALU
|
||
*/
|
||
private async unwrapWxgf(buffer: Buffer): Promise<{ data: Buffer; isWxgf: boolean }> {
|
||
// 检查是否是 wxgf 格式 (77 78 67 66 = "wxgf")
|
||
if (buffer.length < 20 ||
|
||
buffer[0] !== 0x77 || buffer[1] !== 0x78 ||
|
||
buffer[2] !== 0x67 || buffer[3] !== 0x66) {
|
||
return { data: buffer, isWxgf: false }
|
||
}
|
||
|
||
// 先尝试搜索内嵌的传统图片签名（有些 wxgf 可能直接包含 JPG/PNG）
|
||
for (let i = 4; i < Math.min(buffer.length - 12, 4096); i++) {
|
||
// JPG
|
||
if (buffer[i] === 0xff && buffer[i + 1] === 0xd8 && buffer[i + 2] === 0xff) {
|
||
return { data: buffer.subarray(i), isWxgf: false }
|
||
}
|
||
// PNG
|
||
if (buffer[i] === 0x89 && buffer[i + 1] === 0x50 &&
|
||
buffer[i + 2] === 0x4e && buffer[i + 3] === 0x47) {
|
||
return { data: buffer.subarray(i), isWxgf: false }
|
||
}
|
||
}
|
||
|
||
// 提取 HEVC NALU 裸流
|
||
const hevcData = this.extractHevcNalu(buffer)
|
||
// console.log(`[ImageDecrypt] wxgf buffer=${buffer.length} hevcData=${hevcData?.length}`)
|
||
|
||
if (!hevcData || hevcData.length < 100) {
|
||
console.warn(`[ImageDecrypt] HEVC NALU 提取失败或数据过短: buffer=${buffer.length} hevc=${hevcData?.length ?? 0}`)
|
||
return { data: buffer, isWxgf: true }
|
||
}
|
||
|
||
// 尝试用 ffmpeg 转换
|
||
try {
|
||
const jpgData = await this.convertHevcToJpg(hevcData)
|
||
if (jpgData && jpgData.length > 0) {
|
||
return { data: jpgData, isWxgf: false }
|
||
}
|
||
} catch (e) {
|
||
console.error('[ImageDecrypt] unwrapWxgf 转换过程异常:', e)
|
||
}
|
||
|
||
// ffmpeg 失败，返回原始 HEVC 数据
|
||
return { data: hevcData, isWxgf: true }
|
||
}
|
||
|
||
/**
|
||
* 从 wxgf 数据中提取 HEVC NALU 裸流
|
||
*
|
||
* wxgf 格式分析（基于 https://sarv.blog/posts/wxam/）:
|
||
* - 文件头: "wxgf" + 元数据
|
||
* - 数据区: 包含 HEVC NALU 单元
|
||
* - HEVC NALU 起始码: 0x00000001 或 0x000001
|
||
*
|
||
* HEVC NAL Unit Type (在起始码后的第一个字节的高6位):
|
||
* - VPS (32): 视频参数集
|
||
* - SPS (33): 序列参数集
|
||
* - PPS (34): 图像参数集
|
||
* - IDR (19/20): 关键帧
|
||
*/
|
||
private extractHevcNalu(buffer: Buffer): Buffer | null {
|
||
const nalUnits: Buffer[] = []
|
||
let i = 4 // 跳过 "wxgf" 头
|
||
|
||
// 解析 wxgf 头部获取数据偏移
|
||
// wxgf 头部结构不固定，我们直接搜索 HEVC NALU 起始码
|
||
|
||
while (i < buffer.length - 4) {
|
||
// 查找 4 字节起始码 0x00000001
|
||
if (buffer[i] === 0x00 && buffer[i + 1] === 0x00 &&
|
||
buffer[i + 2] === 0x00 && buffer[i + 3] === 0x01) {
|
||
|
||
// 找到起始码，确定 NAL 单元的结束位置
|
||
let nalStart = i
|
||
let nalEnd = buffer.length
|
||
|
||
// 搜索下一个起始码
|
||
for (let j = i + 4; j < buffer.length - 3; j++) {
|
||
if (buffer[j] === 0x00 && buffer[j + 1] === 0x00) {
|
||
if (buffer[j + 2] === 0x01 ||
|
||
(buffer[j + 2] === 0x00 && j + 3 < buffer.length && buffer[j + 3] === 0x01)) {
|
||
nalEnd = j
|
||
break
|
||
}
|
||
}
|
||
}
|
||
|
||
// 提取 NAL 单元
|
||
const nalUnit = buffer.subarray(nalStart, nalEnd)
|
||
if (nalUnit.length > 4) {
|
||
nalUnits.push(nalUnit)
|
||
}
|
||
|
||
i = nalEnd
|
||
} else if (buffer[i] === 0x00 && buffer[i + 1] === 0x00 && buffer[i + 2] === 0x01) {
|
||
// 3 字节起始码
|
||
let nalStart = i
|
||
let nalEnd = buffer.length
|
||
|
||
for (let j = i + 3; j < buffer.length - 2; j++) {
|
||
if (buffer[j] === 0x00 && buffer[j + 1] === 0x00) {
|
||
if (buffer[j + 2] === 0x01 ||
|
||
(buffer[j + 2] === 0x00 && j + 3 < buffer.length && buffer[j + 3] === 0x01)) {
|
||
nalEnd = j
|
||
break
|
||
}
|
||
}
|
||
}
|
||
|
||
const nalUnit = buffer.subarray(nalStart, nalEnd)
|
||
if (nalUnit.length > 3) {
|
||
nalUnits.push(nalUnit)
|
||
}
|
||
|
||
i = nalEnd
|
||
} else {
|
||
i++
|
||
}
|
||
}
|
||
|
||
if (nalUnits.length === 0) {
|
||
// 备用方案：直接从第一个起始码开始截取到文件末尾
|
||
for (let j = 4; j < buffer.length - 4; j++) {
|
||
if (buffer[j] === 0x00 && buffer[j + 1] === 0x00 &&
|
||
buffer[j + 2] === 0x00 && buffer[j + 3] === 0x01) {
|
||
return buffer.subarray(j)
|
||
}
|
||
}
|
||
return null
|
||
}
|
||
|
||
// 合并所有 NAL 单元
|
||
return Buffer.concat(nalUnits)
|
||
}
|
||
|
||
/**
|
||
* 获取 ffmpeg 可执行文件路径
|
||
* 优先使用 ffmpeg-static 提供的路径，如果不可用则尝试系统 PATH
|
||
*/
|
||
private getFfmpegPath(): string {
|
||
// 尝试获取 ffmpeg-static 的路径
|
||
const staticPath = getStaticFfmpegPath()
|
||
if (staticPath) {
|
||
// 处理 asar 打包的情况
|
||
const unpackedPath = staticPath.replace('app.asar', 'app.asar.unpacked')
|
||
if (existsSync(unpackedPath)) {
|
||
return unpackedPath
|
||
}
|
||
if (existsSync(staticPath)) {
|
||
return staticPath
|
||
}
|
||
}
|
||
// 回退到系统 PATH
|
||
console.warn(`[ImageDecrypt] ffmpeg-static 未找到解压路径，尝试使用系统 ffmpeg: ${staticPath}`)
|
||
return 'ffmpeg'
|
||
}
|
||
|
||
/**
|
||
* 使用 ffmpeg 将 HEVC 裸流转换为 JPG
|
||
* 使用 spawn + 管道，最小化开销
|
||
*/
|
||
private convertHevcToJpg(hevcData: Buffer): Promise<Buffer | null> {
|
||
const ffmpeg = this.getFfmpegPath()
|
||
// console.log(`[ImageDecrypt] 使用 ffmpeg: ${ffmpeg}`)
|
||
|
||
return new Promise((resolve) => {
|
||
// eslint-disable-next-line @typescript-eslint/no-var-requires
|
||
const { spawn } = require('child_process')
|
||
const chunks: Buffer[] = []
|
||
const errChunks: Buffer[] = []
|
||
|
||
const args = [
|
||
'-hide_banner',
|
||
'-loglevel', 'error',
|
||
'-f', 'hevc',
|
||
'-i', 'pipe:0',
|
||
'-vframes', '1',
|
||
'-q:v', '3', // 稍微降低质量，加快编码
|
||
'-f', 'mjpeg',
|
||
'pipe:1'
|
||
]
|
||
|
||
const proc = spawn(ffmpeg, args, {
|
||
stdio: ['pipe', 'pipe', 'pipe'],
|
||
windowsHide: true // Windows 下隐藏窗口
|
||
})
|
||
|
||
proc.stdout.on('data', (chunk: Buffer) => chunks.push(chunk))
|
||
proc.stderr.on('data', (chunk: Buffer) => errChunks.push(chunk))
|
||
|
||
proc.on('close', (code: number) => {
|
||
if (code === 0 && chunks.length > 0) {
|
||
const result = Buffer.concat(chunks)
|
||
resolve(result)
|
||
} else {
|
||
const errMsg = Buffer.concat(errChunks).toString()
|
||
console.error(`[ImageDecrypt] ffmpeg 转换失败 code=${code} err=${errMsg}`)
|
||
resolve(null)
|
||
}
|
||
})
|
||
|
||
proc.on('error', (err: any) => {
|
||
console.error(`[ImageDecrypt] ffmpeg 启动失败: ${ffmpeg}`, err)
|
||
resolve(null)
|
||
})
|
||
|
||
// 写入数据并关闭
|
||
try {
|
||
proc.stdin.write(hevcData)
|
||
proc.stdin.end()
|
||
} catch (e) {
|
||
console.error('[ImageDecrypt] 写入 ffmpeg stdin 失败', e)
|
||
resolve(null)
|
||
}
|
||
})
|
||
}
|
||
|
||
private detectImageExtension(buffer: Buffer): string | null {
|
||
if (buffer.length < 12) return null
|
||
|
||
// 检查是否是 wxgf 格式，如果是则跳过头部再检测
|
||
if (buffer[0] === 0x77 && buffer[1] === 0x78 && buffer[2] === 0x67 && buffer[3] === 0x66) {
|
||
// wxgf 格式，尝试在不同偏移位置查找图片签名
|
||
const offsets = [0x10, 0x12, 0x14, 0x18, 0x20, 0xd0, 0x100]
|
||
for (const offset of offsets) {
|
||
if (buffer.length > offset + 12) {
|
||
const ext = this.detectImageExtensionAt(buffer, offset)
|
||
if (ext) return ext
|
||
}
|
||
}
|
||
// 暴力搜索 JPG 签名 (ff d8 ff)
|
||
for (let i = 4; i < Math.min(buffer.length - 3, 512); i++) {
|
||
if (buffer[i] === 0xff && buffer[i + 1] === 0xd8 && buffer[i + 2] === 0xff) {
|
||
return '.jpg'
|
||
}
|
||
}
|
||
return null
|
||
}
|
||
|
||
return this.detectImageExtensionAt(buffer, 0)
|
||
}
|
||
|
||
private detectImageExtensionAt(buffer: Buffer, offset: number): string | null {
|
||
if (buffer.length < offset + 12) return null
|
||
if (buffer[offset] === 0x47 && buffer[offset + 1] === 0x49 && buffer[offset + 2] === 0x46) return '.gif'
|
||
if (buffer[offset] === 0x89 && buffer[offset + 1] === 0x50 && buffer[offset + 2] === 0x4e && buffer[offset + 3] === 0x47) return '.png'
|
||
if (buffer[offset] === 0xff && buffer[offset + 1] === 0xd8 && buffer[offset + 2] === 0xff) return '.jpg'
|
||
if (buffer[offset] === 0x52 && buffer[offset + 1] === 0x49 && buffer[offset + 2] === 0x46 && buffer[offset + 3] === 0x46 &&
|
||
buffer[offset + 8] === 0x57 && buffer[offset + 9] === 0x45 && buffer[offset + 10] === 0x42 && buffer[offset + 11] === 0x50) {
|
||
return '.webp'
|
||
}
|
||
return null
|
||
}
|
||
|
||
private bufferToDataUrl(buffer: Buffer, ext: string): string | null {
|
||
const mimeType = this.mimeFromExtension(ext)
|
||
if (!mimeType) return null
|
||
return `data:${mimeType};base64,${buffer.toString('base64')}`
|
||
}
|
||
|
||
private fileToDataUrl(filePath: string): string | null {
|
||
try {
|
||
const ext = extname(filePath).toLowerCase()
|
||
const mimeType = this.mimeFromExtension(ext)
|
||
if (!mimeType) return null
|
||
const data = readFileSync(filePath)
|
||
return `data:${mimeType};base64,${data.toString('base64')}`
|
||
} catch {
|
||
return null
|
||
}
|
||
}
|
||
|
||
private mimeFromExtension(ext: string): string | null {
|
||
switch (ext.toLowerCase()) {
|
||
case '.gif':
|
||
return 'image/gif'
|
||
case '.png':
|
||
return 'image/png'
|
||
case '.jpg':
|
||
case '.jpeg':
|
||
return 'image/jpeg'
|
||
case '.webp':
|
||
return 'image/webp'
|
||
case '.heic':
|
||
case '.heif':
|
||
return 'image/heic'
|
||
default:
|
||
return null
|
||
}
|
||
}
|
||
|
||
private filePathToUrl(filePath: string): string {
|
||
const url = pathToFileURL(filePath).toString()
|
||
try {
|
||
const mtime = statSync(filePath).mtimeMs
|
||
return `${url}?v=${Math.floor(mtime)}`
|
||
} catch {
|
||
return url
|
||
}
|
||
}
|
||
|
||
private isImageFile(filePath: string): boolean {
|
||
const ext = extname(filePath).toLowerCase()
|
||
return ext === '.gif' || ext === '.png' || ext === '.jpg' || ext === '.jpeg' || ext === '.webp'
|
||
}
|
||
|
||
private compareBytes(a: Buffer, b: Buffer): boolean {
|
||
if (a.length !== b.length) return false
|
||
for (let i = 0; i < a.length; i += 1) {
|
||
if (a[i] !== b[i]) return false
|
||
}
|
||
return true
|
||
}
|
||
|
||
// 保留原有的批量检测 XOR 密钥方法（用于兼容）
|
||
async batchDetectXorKey(dirPath: string, maxFiles: number = 100): Promise<number | null> {
|
||
const keyCount: Map<number, number> = new Map()
|
||
let filesChecked = 0
|
||
|
||
const V1_SIGNATURE = Buffer.from([0x07, 0x08, 0x56, 0x31, 0x08, 0x07])
|
||
const V2_SIGNATURE = Buffer.from([0x07, 0x08, 0x56, 0x32, 0x08, 0x07])
|
||
const IMAGE_SIGNATURES: { [key: string]: Buffer } = {
|
||
jpg: Buffer.from([0xFF, 0xD8, 0xFF]),
|
||
png: Buffer.from([0x89, 0x50, 0x4E, 0x47]),
|
||
gif: Buffer.from([0x47, 0x49, 0x46, 0x38]),
|
||
bmp: Buffer.from([0x42, 0x4D]),
|
||
webp: Buffer.from([0x52, 0x49, 0x46, 0x46])
|
||
}
|
||
|
||
const detectXorKeyFromV3 = (header: Buffer): number | null => {
|
||
for (const [, signature] of Object.entries(IMAGE_SIGNATURES)) {
|
||
const xorKey = header[0] ^ signature[0]
|
||
let valid = true
|
||
for (let i = 0; i < signature.length && i < header.length; i++) {
|
||
if ((header[i] ^ xorKey) !== signature[i]) {
|
||
valid = false
|
||
break
|
||
}
|
||
}
|
||
if (valid) return xorKey
|
||
}
|
||
return null
|
||
}
|
||
|
||
const scanDir = (dir: string) => {
|
||
if (filesChecked >= maxFiles) return
|
||
try {
|
||
const entries = readdirSync(dir, { withFileTypes: true })
|
||
for (const entry of entries) {
|
||
if (filesChecked >= maxFiles) return
|
||
const fullPath = join(dir, entry.name)
|
||
if (entry.isDirectory()) {
|
||
scanDir(fullPath)
|
||
} else if (entry.name.endsWith('.dat')) {
|
||
try {
|
||
const header = Buffer.alloc(16)
|
||
const fd = require('fs').openSync(fullPath, 'r')
|
||
require('fs').readSync(fd, header, 0, 16, 0)
|
||
require('fs').closeSync(fd)
|
||
|
||
if (header.subarray(0, 6).equals(V1_SIGNATURE) || header.subarray(0, 6).equals(V2_SIGNATURE)) {
|
||
continue
|
||
}
|
||
|
||
const key = detectXorKeyFromV3(header)
|
||
if (key !== null) {
|
||
keyCount.set(key, (keyCount.get(key) || 0) + 1)
|
||
filesChecked++
|
||
}
|
||
} catch { }
|
||
}
|
||
}
|
||
} catch { }
|
||
}
|
||
|
||
scanDir(dirPath)
|
||
|
||
if (keyCount.size === 0) return null
|
||
|
||
let maxCount = 0
|
||
let mostCommonKey: number | null = null
|
||
keyCount.forEach((count, key) => {
|
||
if (count > maxCount) {
|
||
maxCount = count
|
||
mostCommonKey = key
|
||
}
|
||
})
|
||
|
||
return mostCommonKey
|
||
}
|
||
|
||
// 保留原有的解密到文件方法（用于兼容）
|
||
async decryptToFile(inputPath: string, outputPath: string, xorKey: number, aesKey?: Buffer): Promise<void> {
|
||
const version = this.getDatVersion(inputPath)
|
||
let decrypted: Buffer
|
||
|
||
if (version === 0) {
|
||
decrypted = this.decryptDatV3(inputPath, xorKey)
|
||
} else if (version === 1) {
|
||
const key = this.asciiKey16(this.defaultV1AesKey)
|
||
decrypted = this.decryptDatV4(inputPath, xorKey, key)
|
||
} else {
|
||
if (!aesKey || aesKey.length !== 16) {
|
||
throw new Error('V4版本需要16字节AES密钥')
|
||
}
|
||
decrypted = this.decryptDatV4(inputPath, xorKey, aesKey)
|
||
}
|
||
|
||
const outputDir = dirname(outputPath)
|
||
if (!existsSync(outputDir)) {
|
||
mkdirSync(outputDir, { recursive: true })
|
||
}
|
||
|
||
await writeFile(outputPath, decrypted)
|
||
}
|
||
|
||
/**
|
||
* 清理 hardlink 数据库缓存（用于增量更新时释放文件）
|
||
*/
|
||
clearHardlinkCache(): void {
|
||
this.hardlinkCache.forEach((state, accountDir) => {
|
||
try {
|
||
state.db.close()
|
||
} catch (e) {
|
||
console.warn(`关闭 hardlink 数据库失败: ${accountDir}`, e)
|
||
}
|
||
})
|
||
this.hardlinkCache.clear()
|
||
}
|
||
}
|
||
|
||
export const imageDecryptService = new ImageDecryptService()
|