mirror of
https://wget.la/https://github.com/Wxw-Gu/WechatExplorer
synced 2026-08-17 11:37:06 +08:00
1184 lines
42 KiB
TypeScript
1184 lines
42 KiB
TypeScript
// @ts-nocheck
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// Windows native bridge adapted from WeFlow. Koffi Win32 callbacks and optional
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// helpers are intentionally dynamic; keep this file isolated from strict TS.
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import { join, dirname, delimiter } from 'path'
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import { existsSync, copyFileSync, mkdirSync } from 'fs'
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import { execFile, spawn } from 'child_process'
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import { promisify } from 'util'
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import os from 'os'
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import crypto from 'crypto'
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import { getResourceRoots as getSharedResourceRoots } from './resource-paths'
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const execFileAsync = promisify(execFile)
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type DbKeyResult = { success: boolean; key?: string; error?: string; logs?: string[] }
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type ImageKeyResult = { success: boolean; xorKey?: number; aesKey?: string; verified?: boolean; error?: string }
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type DbKeyPollResult =
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| { status: 'success'; key: string; loginRequiredDetected: boolean }
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| { status: 'process-ended'; loginRequiredDetected: boolean }
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| { status: 'timeout'; loginRequiredDetected: boolean }
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export class KeyService {
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private readonly isMac = process.platform === 'darwin'
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private koffi: any = null
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private lib: any = null
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private initialized = false
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private initHook: any = null
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private pollKeyData: any = null
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private getStatusMessage: any = null
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private cleanupHook: any = null
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private getLastErrorMsg: any = null
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private getImageKeyDll: any = null
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private lastLoadError = ''
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// Win32 APIs
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private kernel32: any = null
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private user32: any = null
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private advapi32: any = null
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// Kernel32
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private OpenProcess: any = null
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private CloseHandle: any = null
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private TerminateProcess: any = null
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private QueryFullProcessImageNameW: any = null
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// User32
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private EnumWindows: any = null
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private GetWindowTextW: any = null
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private GetWindowTextLengthW: any = null
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private GetClassNameW: any = null
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private GetWindowThreadProcessId: any = null
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private IsWindowVisible: any = null
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private EnumChildWindows: any = null
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private PostMessageW: any = null
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private WNDENUMPROC_PTR: any = null
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// Advapi32
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private RegOpenKeyExW: any = null
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private RegQueryValueExW: any = null
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private RegCloseKey: any = null
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// Constants
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private readonly PROCESS_ALL_ACCESS = 0x1F0FFF
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private readonly PROCESS_TERMINATE = 0x0001
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private readonly KEY_READ = 0x20019
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private readonly HKEY_LOCAL_MACHINE = 0x80000002
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private readonly HKEY_CURRENT_USER = 0x80000001
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private readonly ERROR_SUCCESS = 0
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private readonly WM_CLOSE = 0x0010
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private readonly DB_KEY_PROCESS_CHECK_INTERVAL_MS = 1000
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private getResourceRoots(): string[] {
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return getSharedResourceRoots()
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}
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private getDllPath(): string {
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const archDir = process.arch === 'arm64' ? 'arm64' : 'x64'
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const candidates: string[] = []
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if (process.env.WX_KEY_DLL_PATH) {
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candidates.push(process.env.WX_KEY_DLL_PATH)
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}
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for (const root of this.getResourceRoots()) {
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candidates.push(join(root, 'key', 'win32', archDir, 'wx_key.dll'))
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candidates.push(join(root, 'key', 'win32', 'x64', 'wx_key.dll'))
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candidates.push(join(root, 'key', 'win32', 'wx_key.dll'))
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candidates.push(join(root, 'wx_key.dll'))
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}
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for (const path of candidates) {
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if (existsSync(path)) return path
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}
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return candidates[0]
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}
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private prependDllSearchPaths(dllPath: string): void {
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if (process.platform !== 'win32') return
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const archDir = process.arch === 'arm64' ? 'arm64' : 'x64'
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const dirs = [
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dirname(dllPath),
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...this.getResourceRoots().flatMap((root) => [
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root,
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join(root, 'runtime', 'win32'),
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join(root, 'key', 'win32', archDir),
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join(root, 'key', 'win32', 'x64')
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])
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].filter((dir, index, list) => dir && list.indexOf(dir) === index && existsSync(dir))
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const existing = process.env.PATH || ''
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process.env.PATH = `${dirs.join(delimiter)}${delimiter}${existing}`
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process.env.Path = process.env.PATH
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}
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private isNetworkPath(path: string): boolean {
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if (path.startsWith('\\\\')) return true
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return false
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}
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private localizeNetworkDll(originalPath: string): string {
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try {
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const tempDir = join(os.tmpdir(), 'weflow_dll_cache')
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if (!existsSync(tempDir)) {
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mkdirSync(tempDir, { recursive: true })
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}
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const localPath = join(tempDir, 'wx_key.dll')
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if (existsSync(localPath)) return localPath
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copyFileSync(originalPath, localPath)
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return localPath
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} catch (e) {
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console.error('DLL 本地化失败:', e)
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return originalPath
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}
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}
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private ensureLoaded(): boolean {
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if (this.initialized) return true
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let dllPath = ''
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try {
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this.koffi = require('koffi')
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dllPath = this.getDllPath()
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if (!existsSync(dllPath)) {
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console.error(`wx_key.dll 不存在于路径: ${dllPath}`)
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return false
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}
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if (this.isNetworkPath(dllPath)) {
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dllPath = this.localizeNetworkDll(dllPath)
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}
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this.prependDllSearchPaths(dllPath)
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this.lib = this.koffi.load(dllPath)
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this.initHook = this.lib.func('bool InitializeHook(uint32 targetPid)')
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this.pollKeyData = this.lib.func('bool PollKeyData(_Out_ char *keyBuffer, int bufferSize)')
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this.getStatusMessage = this.lib.func('bool GetStatusMessage(_Out_ char *msgBuffer, int bufferSize, _Out_ int *outLevel)')
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this.cleanupHook = this.lib.func('bool CleanupHook()')
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this.getLastErrorMsg = this.lib.func('const char* GetLastErrorMsg()')
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this.getImageKeyDll = this.lib.func('bool GetImageKey(_Out_ char *resultBuffer, int bufferSize)')
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this.initialized = true
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return true
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} catch (e) {
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const errorMsg = e instanceof Error ? e.message : String(e)
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this.lastLoadError = `wx_key.dll 加载失败\n路径: ${dllPath}\n错误: ${errorMsg}`
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console.error(`加载 wx_key.dll 失败\n 路径: ${dllPath}\n 错误: ${errorMsg}`)
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return false
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}
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}
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private ensureWin32(): boolean {
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return process.platform === 'win32'
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}
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private getLoadError(): string {
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return this.lastLoadError || 'wx_key.dll 未加载'
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}
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private ensureKernel32(): boolean {
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if (this.kernel32) return true
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try {
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this.koffi = require('koffi')
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this.kernel32 = this.koffi.load('kernel32.dll')
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this.OpenProcess = this.kernel32.func('OpenProcess', 'void*', ['uint32', 'bool', 'uint32'])
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this.CloseHandle = this.kernel32.func('CloseHandle', 'bool', ['void*'])
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this.TerminateProcess = this.kernel32.func('TerminateProcess', 'bool', ['void*', 'uint32'])
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this.QueryFullProcessImageNameW = this.kernel32.func('QueryFullProcessImageNameW', 'bool', ['void*', 'uint32', this.koffi.out('uint16*'), this.koffi.out('uint32*')])
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return true
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} catch (e) {
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console.error('初始化 kernel32 失败:', e)
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return false
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}
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}
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private decodeUtf8(buf: Buffer): string {
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const nullIdx = buf.indexOf(0)
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return buf.toString('utf8', 0, nullIdx > -1 ? nullIdx : undefined).trim()
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}
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private ensureUser32(): boolean {
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if (this.user32) return true
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try {
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this.koffi = require('koffi')
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this.user32 = this.koffi.load('user32.dll')
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const WNDENUMPROC = this.koffi.proto('bool __stdcall (void *hWnd, intptr_t lParam)')
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this.WNDENUMPROC_PTR = this.koffi.pointer(WNDENUMPROC)
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this.EnumWindows = this.user32.func('EnumWindows', 'bool', [this.WNDENUMPROC_PTR, 'intptr_t'])
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this.EnumChildWindows = this.user32.func('EnumChildWindows', 'bool', ['void*', this.WNDENUMPROC_PTR, 'intptr_t'])
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this.PostMessageW = this.user32.func('PostMessageW', 'bool', ['void*', 'uint32', 'uintptr_t', 'intptr_t'])
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this.GetWindowTextW = this.user32.func('GetWindowTextW', 'int', ['void*', this.koffi.out('uint16*'), 'int'])
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this.GetWindowTextLengthW = this.user32.func('GetWindowTextLengthW', 'int', ['void*'])
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this.GetClassNameW = this.user32.func('GetClassNameW', 'int', ['void*', this.koffi.out('uint16*'), 'int'])
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this.GetWindowThreadProcessId = this.user32.func('GetWindowThreadProcessId', 'uint32', ['void*', this.koffi.out('uint32*')])
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this.IsWindowVisible = this.user32.func('IsWindowVisible', 'bool', ['void*'])
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return true
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} catch (e) {
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console.error('初始化 user32 失败:', e)
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return false
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}
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}
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private ensureAdvapi32(): boolean {
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if (this.advapi32) return true
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try {
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this.koffi = require('koffi')
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this.advapi32 = this.koffi.load('advapi32.dll')
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const HKEY = this.koffi.alias('HKEY', 'intptr_t')
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const HKEY_PTR = this.koffi.pointer(HKEY)
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this.RegOpenKeyExW = this.advapi32.func('RegOpenKeyExW', 'long', [HKEY, 'uint16*', 'uint32', 'uint32', this.koffi.out(HKEY_PTR)])
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this.RegQueryValueExW = this.advapi32.func('RegQueryValueExW', 'long', [HKEY, 'uint16*', 'uint32*', this.koffi.out('uint32*'), this.koffi.out('uint8*'), this.koffi.out('uint32*')])
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this.RegCloseKey = this.advapi32.func('RegCloseKey', 'long', [HKEY])
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return true
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} catch (e) {
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console.error('初始化 advapi32 失败:', e)
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return false
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}
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}
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private decodeCString(ptr: any): string {
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try {
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if (typeof ptr === 'string') return ptr
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return this.koffi.decode(ptr, 'char', -1)
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} catch {
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return ''
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}
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}
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// --- WeChat Process & Path Finding ---
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private readRegistryString(rootKey: number, subKey: string, valueName: string): string | null {
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if (!this.ensureAdvapi32()) return null
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const subKeyBuf = Buffer.from(subKey + '\0', 'ucs2')
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const valueNameBuf = valueName ? Buffer.from(valueName + '\0', 'ucs2') : null
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const phkResult = Buffer.alloc(8)
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if (this.RegOpenKeyExW(rootKey, subKeyBuf, 0, this.KEY_READ, phkResult) !== this.ERROR_SUCCESS) return null
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const hKey = this.koffi.decode(phkResult, 'uintptr_t')
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try {
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const lpcbData = Buffer.alloc(4)
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lpcbData.writeUInt32LE(0, 0)
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let ret = this.RegQueryValueExW(hKey, valueNameBuf, null, null, null, lpcbData)
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if (ret !== this.ERROR_SUCCESS) return null
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const size = lpcbData.readUInt32LE(0)
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if (size === 0) return null
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const dataBuf = Buffer.alloc(size)
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ret = this.RegQueryValueExW(hKey, valueNameBuf, null, null, dataBuf, lpcbData)
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if (ret !== this.ERROR_SUCCESS) return null
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let str = dataBuf.toString('ucs2')
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if (str.endsWith('\0')) str = str.slice(0, -1)
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return str
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} finally {
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this.RegCloseKey(hKey)
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}
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}
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private async getProcessExecutablePath(pid: number): Promise<string | null> {
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if (!this.ensureKernel32()) return null
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const hProcess = this.OpenProcess(0x1000, false, pid)
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if (!hProcess) return null
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try {
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const sizeBuf = Buffer.alloc(4)
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sizeBuf.writeUInt32LE(1024, 0)
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const pathBuf = Buffer.alloc(1024 * 2)
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const ret = this.QueryFullProcessImageNameW(hProcess, 0, pathBuf, sizeBuf)
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if (ret) {
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const len = sizeBuf.readUInt32LE(0)
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return pathBuf.toString('ucs2', 0, len * 2)
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}
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return null
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} catch (e) {
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console.error('获取进程路径失败:', e)
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return null
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} finally {
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this.CloseHandle(hProcess)
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}
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}
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private async findWeChatInstallPath(): Promise<string | null> {
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try {
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const pid = await this.findWeChatPid()
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if (pid) {
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const runPath = await this.getProcessExecutablePath(pid)
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if (runPath && existsSync(runPath)) return runPath
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}
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} catch (e) {
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console.error('尝试获取运行中微信路径失败:', e)
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}
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const uninstallKeys = [
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'SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall',
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'SOFTWARE\\WOW6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall'
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]
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const roots = [this.HKEY_LOCAL_MACHINE, this.HKEY_CURRENT_USER]
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const tencentKeys = [
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'Software\\Tencent\\WeChat',
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'Software\\WOW6432Node\\Tencent\\WeChat',
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'Software\\Tencent\\Weixin',
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]
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for (const root of roots) {
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for (const key of tencentKeys) {
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const path = this.readRegistryString(root, key, 'InstallPath')
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if (path && existsSync(join(path, 'Weixin.exe'))) return join(path, 'Weixin.exe')
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if (path && existsSync(join(path, 'WeChat.exe'))) return join(path, 'WeChat.exe')
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}
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}
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for (const root of roots) {
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for (const parent of uninstallKeys) {
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const path = this.readRegistryString(root, parent + '\\WeChat', 'InstallLocation')
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if (path && existsSync(join(path, 'Weixin.exe'))) return join(path, 'Weixin.exe')
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}
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}
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const drives = ['C', 'D', 'E', 'F']
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const commonPaths = [
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'Program Files\\Tencent\\WeChat\\WeChat.exe',
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'Program Files (x86)\\Tencent\\WeChat\\WeChat.exe',
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'Program Files\\Tencent\\Weixin\\Weixin.exe',
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'Program Files (x86)\\Tencent\\Weixin\\Weixin.exe'
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]
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for (const drive of drives) {
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for (const p of commonPaths) {
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const full = join(drive + ':\\', p)
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if (existsSync(full)) return full
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}
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}
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return null
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}
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private async findPidsByImageName(imageName: string): Promise<number[]> {
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try {
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const { stdout } = await execFileAsync('tasklist', ['/FI', `IMAGENAME eq ${imageName}`, '/FO', 'CSV', '/NH'])
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const lines = stdout.split(/\r?\n/).map((line) => line.trim()).filter(Boolean)
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const pids: number[] = []
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for (const line of lines) {
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if (line.startsWith('INFO:')) continue
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const parts = line.split('","').map((p) => p.replace(/^"|"$/g, ''))
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if (parts[0]?.toLowerCase() === imageName.toLowerCase()) {
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const pid = Number(parts[1])
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if (!Number.isNaN(pid)) pids.push(pid)
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}
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}
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return pids
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} catch (e) {
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return []
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}
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}
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private async findWeChatPids(): Promise<number[]> {
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const pids: number[] = []
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const pushUnique = (pid: number | null | undefined) => {
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if (!pid || pids.includes(pid)) return
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pids.push(pid)
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}
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for (const name of ['Weixin.exe', 'WeChat.exe']) {
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const found = await this.findPidsByImageName(name)
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found.forEach(pushUnique)
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}
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return pids
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}
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private async isWeChatPidActive(pid: number): Promise<boolean> {
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const pids = await this.findWeChatPids()
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if (pids.includes(pid)) return true
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const fallbackPid = await this.waitForWeChatWindow(250)
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return fallbackPid === pid
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}
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private async waitForWeChatPid(timeoutMs: number): Promise<number | null> {
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const start = Date.now()
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while (Date.now() - start < timeoutMs) {
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const pids = await this.findWeChatPids()
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if (pids.length > 0) return pids[0]
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const fallbackPid = await this.waitForWeChatWindow(250)
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if (fallbackPid) return fallbackPid
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await new Promise(r => setTimeout(r, 500))
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}
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return null
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}
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private getRemainingMs(deadline: number): number {
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return Math.max(0, deadline - Date.now())
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}
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private async pollDbKeyFromHook(
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pid: number,
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deadline: number,
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logs: string[],
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onStatus?: (message: string, level: number) => void
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): Promise<DbKeyPollResult> {
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const keyBuffer = Buffer.alloc(128)
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let loginRequiredDetected = false
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let nextProcessCheckAt = 0
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while (Date.now() < deadline) {
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const now = Date.now()
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if (now >= nextProcessCheckAt) {
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nextProcessCheckAt = now + this.DB_KEY_PROCESS_CHECK_INTERVAL_MS
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if (!await this.isWeChatPidActive(pid)) {
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return { status: 'process-ended', loginRequiredDetected }
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}
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}
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if (this.pollKeyData(keyBuffer, keyBuffer.length)) {
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const key = this.decodeUtf8(keyBuffer)
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if (key.length === 64) {
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onStatus?.('密钥获取成功', 1)
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return { status: 'success', key, loginRequiredDetected }
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}
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}
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for (let i = 0; i < 5; i++) {
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const statusBuffer = Buffer.alloc(256)
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const levelOut = [0]
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if (!this.getStatusMessage(statusBuffer, statusBuffer.length, levelOut)) break
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const msg = this.decodeUtf8(statusBuffer)
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const level = levelOut[0] ?? 0
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if (msg) {
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logs.push(msg)
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if (this.isLoginRelatedText(msg)) {
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|
loginRequiredDetected = true
|
|
}
|
|
onStatus?.(msg, level)
|
|
}
|
|
}
|
|
await new Promise((resolve) => setTimeout(resolve, 120))
|
|
}
|
|
|
|
return { status: 'timeout', loginRequiredDetected }
|
|
}
|
|
|
|
private cleanupDbKeyHook(): void {
|
|
try {
|
|
this.cleanupHook()
|
|
} catch { }
|
|
}
|
|
|
|
private buildInitHookError(): string {
|
|
const error = this.getLastErrorMsg ? this.decodeCString(this.getLastErrorMsg()) : ''
|
|
if (error) {
|
|
if (error.includes('0xC0000022') || error.includes('ACCESS_DENIED') || error.includes('打开目标进程失败')) {
|
|
return '权限不足：无法访问微信进程。\n\n解决方法：\n1. 右键 WeFlow 图标，选择"以管理员身份运行"\n2. 关闭可能拦截的安全软件（如360、火绒等）\n3. 确保微信没有以管理员权限运行'
|
|
}
|
|
return error
|
|
}
|
|
|
|
const statusBuffer = Buffer.alloc(256)
|
|
const levelOut = [0]
|
|
const status = this.getStatusMessage && this.getStatusMessage(statusBuffer, statusBuffer.length, levelOut)
|
|
? this.decodeUtf8(statusBuffer)
|
|
: ''
|
|
return status || '初始化失败'
|
|
}
|
|
|
|
private async waitForNextDbKeyPid(deadline: number, onStatus?: (message: string, level: number) => void): Promise<number | null> {
|
|
while (this.getRemainingMs(deadline) > 0) {
|
|
onStatus?.('正在查找微信进程...', 0)
|
|
const pid = await this.waitForWeChatPid(Math.min(this.getRemainingMs(deadline), 30_000))
|
|
if (pid) return pid
|
|
}
|
|
return null
|
|
}
|
|
|
|
private shouldRetryAfterProcessLost(deadline: number): boolean {
|
|
return this.getRemainingMs(deadline) > 1000
|
|
}
|
|
|
|
private async delayBeforeRetry(): Promise<void> {
|
|
await new Promise((resolve) => setTimeout(resolve, 500))
|
|
}
|
|
|
|
private async waitForProcessRestart(deadline: number, onStatus?: (message: string, level: number) => void): Promise<number | null> {
|
|
if (!this.shouldRetryAfterProcessLost(deadline)) return null
|
|
onStatus?.('检测到微信已退出，已清理 Hook，等待重新打开微信...', 0)
|
|
await this.delayBeforeRetry()
|
|
return this.waitForNextDbKeyPid(deadline, onStatus)
|
|
}
|
|
|
|
private async detectLoginRequiredForLastPid(pid: number | null, loginRequiredDetected: boolean): Promise<boolean> {
|
|
if (loginRequiredDetected) return true
|
|
if (!pid) return false
|
|
if (!await this.isWeChatPidActive(pid)) return false
|
|
return await this.detectWeChatLoginRequired(pid)
|
|
}
|
|
|
|
private async findWeChatPid(): Promise<number | null> {
|
|
const pids = await this.findWeChatPids()
|
|
if (pids.length > 0) return pids[0]
|
|
const fallbackPid = await this.waitForWeChatWindow(5000)
|
|
return fallbackPid ?? null
|
|
}
|
|
|
|
private async waitForWeChatExit(timeoutMs = 8000): Promise<boolean> {
|
|
const start = Date.now()
|
|
while (Date.now() - start < timeoutMs) {
|
|
const runningPids = await this.findWeChatPids()
|
|
if (runningPids.length === 0) return true
|
|
await new Promise(r => setTimeout(r, 400))
|
|
}
|
|
return false
|
|
}
|
|
|
|
private async closeWeChatWindows(): Promise<boolean> {
|
|
if (!this.ensureUser32()) return false
|
|
let requested = false
|
|
|
|
const enumWindowsCallback = this.koffi.register((hWnd: any, lParam: any) => {
|
|
if (!this.IsWindowVisible(hWnd)) return true
|
|
const title = this.getWindowTitle(hWnd)
|
|
const className = this.getClassName(hWnd)
|
|
const classLower = (className || '').toLowerCase()
|
|
const isWeChatWindow = this.isWeChatWindowTitle(title) || classLower.includes('wechat') || classLower.includes('weixin')
|
|
if (!isWeChatWindow) return true
|
|
|
|
requested = true
|
|
try {
|
|
this.PostMessageW?.(hWnd, this.WM_CLOSE, 0, 0)
|
|
} catch { }
|
|
return true
|
|
}, this.WNDENUMPROC_PTR)
|
|
|
|
this.EnumWindows(enumWindowsCallback, 0)
|
|
this.koffi.unregister(enumWindowsCallback)
|
|
|
|
return requested
|
|
}
|
|
|
|
private async killWeChatProcesses(): Promise<boolean> {
|
|
const requested = await this.closeWeChatWindows()
|
|
if (requested) {
|
|
const gracefulOk = await this.waitForWeChatExit(1500)
|
|
if (gracefulOk) return true
|
|
}
|
|
|
|
try {
|
|
await execFileAsync('taskkill', ['/F', '/T', '/IM', 'Weixin.exe'])
|
|
await execFileAsync('taskkill', ['/F', '/T', '/IM', 'WeChat.exe'])
|
|
} catch (e) { }
|
|
|
|
return await this.waitForWeChatExit(5000)
|
|
}
|
|
|
|
// --- Window Detection ---
|
|
|
|
private getWindowTitle(hWnd: any): string {
|
|
const len = this.GetWindowTextLengthW(hWnd)
|
|
if (len === 0) return ''
|
|
const buf = Buffer.alloc((len + 1) * 2)
|
|
this.GetWindowTextW(hWnd, buf, len + 1)
|
|
return buf.toString('ucs2', 0, len * 2)
|
|
}
|
|
|
|
private getClassName(hWnd: any): string {
|
|
const buf = Buffer.alloc(512)
|
|
const len = this.GetClassNameW(hWnd, buf, 256)
|
|
return buf.toString('ucs2', 0, len * 2)
|
|
}
|
|
|
|
private isWeChatWindowTitle(title: string): boolean {
|
|
const normalized = title.trim()
|
|
if (!normalized) return false
|
|
const lower = normalized.toLowerCase()
|
|
return normalized === '微信' || lower === 'wechat' || lower === 'weixin'
|
|
}
|
|
|
|
private async waitForWeChatWindow(timeoutMs = 25000): Promise<number | null> {
|
|
if (!this.ensureUser32()) return null
|
|
const startTime = Date.now()
|
|
while (Date.now() - startTime < timeoutMs) {
|
|
let foundPid: number | null = null
|
|
|
|
const enumWindowsCallback = this.koffi.register((hWnd: any, lParam: any) => {
|
|
if (!this.IsWindowVisible(hWnd)) return true
|
|
const title = this.getWindowTitle(hWnd)
|
|
if (!this.isWeChatWindowTitle(title)) return true
|
|
|
|
const pidBuf = Buffer.alloc(4)
|
|
this.GetWindowThreadProcessId(hWnd, pidBuf)
|
|
const pid = pidBuf.readUInt32LE(0)
|
|
if (pid) {
|
|
foundPid = pid
|
|
return false
|
|
}
|
|
return true
|
|
}, this.WNDENUMPROC_PTR)
|
|
|
|
this.EnumWindows(enumWindowsCallback, 0)
|
|
this.koffi.unregister(enumWindowsCallback)
|
|
|
|
if (foundPid) return foundPid
|
|
await new Promise(r => setTimeout(r, 500))
|
|
}
|
|
return null
|
|
}
|
|
|
|
private collectChildWindowInfos(parent: any): Array<{ title: string; className: string }> {
|
|
const children: Array<{ title: string; className: string }> = []
|
|
const enumChildCallback = this.koffi.register((hChild: any, lp: any) => {
|
|
const title = this.getWindowTitle(hChild).trim()
|
|
const className = this.getClassName(hChild).trim()
|
|
children.push({ title, className })
|
|
return true
|
|
}, this.WNDENUMPROC_PTR)
|
|
this.EnumChildWindows(parent, enumChildCallback, 0)
|
|
this.koffi.unregister(enumChildCallback)
|
|
return children
|
|
}
|
|
|
|
private hasReadyComponents(children: Array<{ title: string; className: string }>): boolean {
|
|
if (children.length === 0) return false
|
|
|
|
const readyTexts = ['聊天', '登录', '账号']
|
|
const readyClassMarkers = ['WeChat', 'Weixin', 'TXGuiFoundation', 'Qt5', 'ChatList', 'MainWnd', 'BrowserWnd', 'ListView']
|
|
const readyChildCountThreshold = 14
|
|
|
|
let classMatchCount = 0
|
|
let titleMatchCount = 0
|
|
let hasValidClassName = false
|
|
|
|
for (const child of children) {
|
|
const normalizedTitle = child.title.replace(/\s+/g, '')
|
|
if (normalizedTitle) {
|
|
if (readyTexts.some(marker => normalizedTitle.includes(marker))) return true
|
|
titleMatchCount += 1
|
|
}
|
|
const className = child.className
|
|
if (className) {
|
|
if (readyClassMarkers.some(marker => className.includes(marker))) return true
|
|
if (className.length > 5) {
|
|
classMatchCount += 1
|
|
hasValidClassName = true
|
|
}
|
|
}
|
|
}
|
|
|
|
if (classMatchCount >= 3 || titleMatchCount >= 2) return true
|
|
if (children.length >= readyChildCountThreshold) return true
|
|
if (hasValidClassName && children.length >= 5) return true
|
|
return false
|
|
}
|
|
|
|
private isLoginRelatedText(value: string): boolean {
|
|
const normalized = String(value || '').replace(/\s+/g, '').toLowerCase()
|
|
if (!normalized) return false
|
|
const keywords = [
|
|
'登录',
|
|
'扫码',
|
|
'二维码',
|
|
'请在手机上确认',
|
|
'手机确认',
|
|
'切换账号',
|
|
'wechatlogin',
|
|
'qrcode',
|
|
'scan'
|
|
]
|
|
return keywords.some((keyword) => normalized.includes(keyword))
|
|
}
|
|
|
|
private async detectWeChatLoginRequired(pid: number): Promise<boolean> {
|
|
if (!this.ensureUser32()) return false
|
|
let loginRequired = false
|
|
|
|
const enumWindowsCallback = this.koffi.register((hWnd: any, _lParam: any) => {
|
|
if (!this.IsWindowVisible(hWnd)) return true
|
|
const title = this.getWindowTitle(hWnd)
|
|
if (!this.isWeChatWindowTitle(title)) return true
|
|
|
|
const pidBuf = Buffer.alloc(4)
|
|
this.GetWindowThreadProcessId(hWnd, pidBuf)
|
|
const windowPid = pidBuf.readUInt32LE(0)
|
|
if (windowPid !== pid) return true
|
|
|
|
if (this.isLoginRelatedText(title)) {
|
|
loginRequired = true
|
|
return false
|
|
}
|
|
|
|
const children = this.collectChildWindowInfos(hWnd)
|
|
for (const child of children) {
|
|
if (this.isLoginRelatedText(child.title) || this.isLoginRelatedText(child.className)) {
|
|
loginRequired = true
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}, this.WNDENUMPROC_PTR)
|
|
|
|
this.EnumWindows(enumWindowsCallback, 0)
|
|
this.koffi.unregister(enumWindowsCallback)
|
|
|
|
return loginRequired
|
|
}
|
|
|
|
private async waitForWeChatWindowComponents(pid: number, timeoutMs = 15000): Promise<boolean> {
|
|
if (!this.ensureUser32()) return true
|
|
const startTime = Date.now()
|
|
while (Date.now() - startTime < timeoutMs) {
|
|
let ready = false
|
|
const enumWindowsCallback = this.koffi.register((hWnd: any, lParam: any) => {
|
|
if (!this.IsWindowVisible(hWnd)) return true
|
|
const title = this.getWindowTitle(hWnd)
|
|
if (!this.isWeChatWindowTitle(title)) return true
|
|
|
|
const pidBuf = Buffer.alloc(4)
|
|
this.GetWindowThreadProcessId(hWnd, pidBuf)
|
|
const windowPid = pidBuf.readUInt32LE(0)
|
|
if (windowPid !== pid) return true
|
|
|
|
const children = this.collectChildWindowInfos(hWnd)
|
|
if (this.hasReadyComponents(children)) {
|
|
ready = true
|
|
return false
|
|
}
|
|
return true
|
|
}, this.WNDENUMPROC_PTR)
|
|
|
|
this.EnumWindows(enumWindowsCallback, 0)
|
|
this.koffi.unregister(enumWindowsCallback)
|
|
|
|
if (ready) return true
|
|
await new Promise(r => setTimeout(r, 500))
|
|
}
|
|
return true
|
|
}
|
|
|
|
// --- DB Key Logic (core hook/poll flow unchanged) ---
|
|
|
|
async autoGetDbKey(
|
|
timeoutMs = 60_000,
|
|
onStatus?: (message: string, level: number) => void
|
|
): Promise<DbKeyResult> {
|
|
if (!this.ensureWin32()) return { success: false, error: '仅支持 Windows' }
|
|
if (!this.ensureLoaded()) return { success: false, error: this.getLoadError() }
|
|
if (!this.ensureKernel32()) return { success: false, error: 'Kernel32 Init Failed' }
|
|
|
|
const logs: string[] = []
|
|
const deadline = Date.now() + timeoutMs
|
|
onStatus?.('正在查找微信进程...', 0)
|
|
let pid = await this.findWeChatPid()
|
|
if (!pid) {
|
|
const err = '未找到微信进程，请先启动微信'
|
|
onStatus?.(err, 2)
|
|
return { success: false, error: err }
|
|
}
|
|
let lastAttemptLoginRequiredDetected = false
|
|
|
|
while (pid && this.getRemainingMs(deadline) > 0) {
|
|
onStatus?.(`检测到微信窗口 (PID: ${pid})，正在获取...`, 0)
|
|
onStatus?.('正在检测微信界面组件...', 0)
|
|
await this.waitForWeChatWindowComponents(pid, Math.min(15000, this.getRemainingMs(deadline)))
|
|
|
|
if (!await this.isWeChatPidActive(pid)) {
|
|
pid = await this.waitForProcessRestart(deadline, onStatus)
|
|
continue
|
|
}
|
|
|
|
const ok = this.initHook(pid)
|
|
if (!ok) {
|
|
if (!await this.isWeChatPidActive(pid)) {
|
|
this.cleanupDbKeyHook()
|
|
pid = await this.waitForProcessRestart(deadline, onStatus)
|
|
continue
|
|
}
|
|
return { success: false, error: this.buildInitHookError(), logs }
|
|
}
|
|
|
|
let pollResult: DbKeyPollResult
|
|
try {
|
|
pollResult = await this.pollDbKeyFromHook(pid, deadline, logs, onStatus)
|
|
} finally {
|
|
this.cleanupDbKeyHook()
|
|
}
|
|
|
|
lastAttemptLoginRequiredDetected = pollResult.loginRequiredDetected
|
|
if (pollResult.status === 'success') {
|
|
return { success: true, key: pollResult.key, logs }
|
|
}
|
|
if (pollResult.status === 'process-ended') {
|
|
lastAttemptLoginRequiredDetected = false
|
|
pid = await this.waitForProcessRestart(deadline, onStatus)
|
|
continue
|
|
}
|
|
break
|
|
}
|
|
|
|
const loginRequired = await this.detectLoginRequiredForLastPid(pid, lastAttemptLoginRequiredDetected)
|
|
if (loginRequired) {
|
|
return {
|
|
success: false,
|
|
error: '微信已启动但尚未完成登录，请先在微信客户端完成登录后再重试自动获取密钥。',
|
|
logs
|
|
}
|
|
}
|
|
|
|
return { success: false, error: '获取密钥超时', logs }
|
|
}
|
|
|
|
private cleanWxid(wxid: string): string {
|
|
const first = wxid.indexOf('_')
|
|
if (first === -1) return wxid
|
|
const second = wxid.indexOf('_', first + 1)
|
|
if (second === -1) return wxid
|
|
return wxid.substring(0, second)
|
|
}
|
|
|
|
private deriveImageKeys(code: number, wxid: string): { xorKey: number; aesKey: string } {
|
|
const cleanedWxid = this.cleanWxid(wxid)
|
|
const xorKey = code & 0xFF
|
|
const dataToHash = code.toString() + cleanedWxid
|
|
const md5Full = crypto.createHash('md5').update(dataToHash).digest('hex')
|
|
const aesKey = md5Full.substring(0, 16)
|
|
return { xorKey, aesKey }
|
|
}
|
|
|
|
private verifyDerivedAesKey(aesKey: string, ciphertext: Buffer): boolean {
|
|
try {
|
|
if (!aesKey || aesKey.length < 16 || ciphertext.length !== 16) return false
|
|
const decipher = crypto.createDecipheriv('aes-128-ecb', Buffer.from(aesKey, 'ascii').subarray(0, 16), null)
|
|
decipher.setAutoPadding(false)
|
|
const dec = Buffer.concat([decipher.update(ciphertext), decipher.final()])
|
|
if (dec[0] === 0xFF && dec[1] === 0xD8 && dec[2] === 0xFF) return true
|
|
if (dec[0] === 0x89 && dec[1] === 0x50 && dec[2] === 0x4E && dec[3] === 0x47) return true
|
|
if (dec[0] === 0x52 && dec[1] === 0x49 && dec[2] === 0x46 && dec[3] === 0x46) return true
|
|
if (dec[0] === 0x77 && dec[1] === 0x78 && dec[2] === 0x67 && dec[3] === 0x66) return true
|
|
if (dec[0] === 0x47 && dec[1] === 0x49 && dec[2] === 0x46) return true
|
|
return false
|
|
} catch {
|
|
return false
|
|
}
|
|
}
|
|
|
|
private async collectWxidCandidates(manualDir?: string, wxidParam?: string): Promise<string[]> {
|
|
const candidates: string[] = []
|
|
const pushUnique = (value: string) => {
|
|
const v = String(value || '').trim()
|
|
if (!v || candidates.includes(v)) return
|
|
candidates.push(v)
|
|
}
|
|
|
|
if (wxidParam && wxidParam.startsWith('wxid_')) pushUnique(wxidParam)
|
|
|
|
if (manualDir) {
|
|
const normalized = manualDir.replace(/[\\/]+$/, '')
|
|
const dirName = normalized.split(/[\\/]/).pop() ?? ''
|
|
if (dirName.startsWith('wxid_')) pushUnique(dirName)
|
|
|
|
const marker = normalized.match(/[\\/]xwechat_files/i) || normalized.match(/[\\/]WeChat Files/i)
|
|
if (marker) {
|
|
const root = normalized.slice(0, marker.index! + marker[0].length)
|
|
try {
|
|
const { readdirSync, statSync } = await import('fs')
|
|
const { join } = await import('path')
|
|
for (const entry of readdirSync(root)) {
|
|
if (!entry.startsWith('wxid_')) continue
|
|
const full = join(root, entry)
|
|
try {
|
|
if (statSync(full).isDirectory()) pushUnique(entry)
|
|
} catch { }
|
|
}
|
|
} catch { }
|
|
}
|
|
}
|
|
|
|
pushUnique('unknown')
|
|
return candidates
|
|
}
|
|
|
|
async autoGetImageKey(
|
|
manualDir?: string,
|
|
onProgress?: (message: string) => void,
|
|
wxidParam?: string
|
|
): Promise<ImageKeyResult> {
|
|
void wxidParam
|
|
return this.autoGetImageKeyByMemoryScan(manualDir || '', onProgress)
|
|
}
|
|
|
|
// --- 内存扫描备选方案（融合 Dart+Python 优点）---
|
|
// 只扫 RW 可写区域（更快），同时支持 ASCII 和 UTF-16LE 两种密钥格式
|
|
// 验证支持 JPEG/PNG/WEBP/WXGF/GIF 多种格式
|
|
|
|
async autoGetImageKeyByMemoryScan(
|
|
userDir: string,
|
|
onProgress?: (message: string) => void
|
|
): Promise<ImageKeyResult> {
|
|
if (!this.ensureWin32()) return { success: false, error: '仅支持 Windows' }
|
|
|
|
try {
|
|
// 1. 查找模板文件获取密文和 XOR 密钥
|
|
onProgress?.('正在查找模板文件...')
|
|
let result = await this._findTemplateData(userDir, 32)
|
|
let { ciphertext, xorKey } = result
|
|
|
|
// 如果找不到密钥，尝试扫描更多文件
|
|
if (ciphertext && xorKey === null) {
|
|
onProgress?.('未找到有效密钥，尝试扫描更多文件...')
|
|
result = await this._findTemplateData(userDir, 100)
|
|
xorKey = result.xorKey
|
|
}
|
|
|
|
if (!ciphertext) return { success: false, error: '未找到 V2 模板文件，请先在微信中查看几张图片' }
|
|
if (xorKey === null) return { success: false, error: '未能从模板文件中计算出有效的 XOR 密钥，请确保在微信中查看了多张不同的图片' }
|
|
|
|
onProgress?.(`XOR 密钥: 0x${xorKey.toString(16).padStart(2, '0')}，正在查找微信进程...`)
|
|
|
|
// 2. 找微信 PID
|
|
const pid = await this.findWeChatPid()
|
|
if (!pid) return { success: false, error: '微信进程未运行，请先启动微信' }
|
|
|
|
onProgress?.(`已找到微信进程 PID=${pid}，正在扫描内存...`)
|
|
|
|
// 3. 持续轮询内存扫描，最多 60 秒
|
|
const deadline = Date.now() + 60_000
|
|
let scanCount = 0
|
|
while (Date.now() < deadline) {
|
|
scanCount++
|
|
onProgress?.(`第 ${scanCount} 次扫描内存，请在微信中打开图片大图...`)
|
|
const aesKey = await this._scanMemoryForAesKey(pid, ciphertext, onProgress)
|
|
if (aesKey) {
|
|
onProgress?.('密钥获取成功')
|
|
return { success: true, xorKey, aesKey }
|
|
}
|
|
// 等 5 秒再试
|
|
await new Promise(r => setTimeout(r, 5000))
|
|
}
|
|
|
|
return {
|
|
success: false,
|
|
error: '60 秒内未找到 AES 密钥。\n请确保已在微信中打开 2-3 张图片大图后再试。'
|
|
}
|
|
} catch (e) {
|
|
return { success: false, error: `内存扫描失败: ${e}` }
|
|
}
|
|
}
|
|
|
|
private async _findTemplateData(userDir: string, limit: number = 32): Promise<{ ciphertext: Buffer | null; xorKey: number | null }> {
|
|
const { readdirSync, readFileSync, statSync } = await import('fs')
|
|
const { join } = await import('path')
|
|
const V2_MAGIC = Buffer.from([0x07, 0x08, 0x56, 0x32, 0x08, 0x07])
|
|
|
|
// 递归收集 *_t.dat 文件
|
|
const collect = (dir: string, results: string[], maxFiles: number) => {
|
|
if (results.length >= maxFiles) return
|
|
try {
|
|
for (const entry of readdirSync(dir, { withFileTypes: true })) {
|
|
if (results.length >= maxFiles) break
|
|
const full = join(dir, entry.name)
|
|
if (entry.isDirectory()) collect(full, results, maxFiles)
|
|
else if (entry.isFile() && entry.name.endsWith('_t.dat')) results.push(full)
|
|
}
|
|
} catch { /* 忽略无权限目录 */ }
|
|
}
|
|
|
|
const files: string[] = []
|
|
collect(userDir, files, limit)
|
|
|
|
// 按修改时间降序
|
|
files.sort((a, b) => {
|
|
try { return statSync(b).mtimeMs - statSync(a).mtimeMs } catch { return 0 }
|
|
})
|
|
|
|
let ciphertext: Buffer | null = null
|
|
const tailCounts: Record<string, number> = {}
|
|
|
|
for (const f of files.slice(0, 32)) {
|
|
try {
|
|
const data = readFileSync(f)
|
|
if (data.length < 8) continue
|
|
|
|
// 统计末尾两字节用于 XOR 密钥
|
|
if (data.subarray(0, 6).equals(V2_MAGIC) && data.length >= 2) {
|
|
const key = `${data[data.length - 2]}_${data[data.length - 1]}`
|
|
tailCounts[key] = (tailCounts[key] ?? 0) + 1
|
|
}
|
|
|
|
// 提取密文（取第一个有效的）
|
|
if (!ciphertext && data.subarray(0, 6).equals(V2_MAGIC) && data.length >= 0x1F) {
|
|
ciphertext = data.subarray(0xF, 0x1F)
|
|
}
|
|
} catch { /* 忽略 */ }
|
|
}
|
|
|
|
// 计算 XOR 密钥
|
|
let xorKey: number | null = null
|
|
let maxCount = 0
|
|
for (const [key, count] of Object.entries(tailCounts)) {
|
|
if (count > maxCount) { maxCount = count; const [x, y] = key.split('_').map(Number); const k = x ^ 0xFF; if (k === (y ^ 0xD9)) xorKey = k }
|
|
}
|
|
|
|
return { ciphertext, xorKey }
|
|
}
|
|
|
|
private async _scanMemoryForAesKey(
|
|
pid: number,
|
|
ciphertext: Buffer,
|
|
onProgress?: (msg: string) => void
|
|
): Promise<string | null> {
|
|
if (!this.ensureKernel32()) return null
|
|
|
|
// 直接用已加载的 kernel32 实例，用 uintptr 传地址
|
|
const VirtualQueryEx = this.kernel32.func('VirtualQueryEx', 'size_t', ['void*', 'uintptr', 'void*', 'size_t'])
|
|
const ReadProcessMemory = this.kernel32.func('ReadProcessMemory', 'bool', ['void*', 'uintptr', 'void*', 'size_t', this.koffi.out('size_t*')])
|
|
|
|
// RW 保护标志（只扫可写区域，速度更快）
|
|
const RW_FLAGS = 0x04 | 0x08 | 0x40 | 0x80 // PAGE_READWRITE | PAGE_WRITECOPY | PAGE_EXECUTE_READWRITE | PAGE_EXECUTE_WRITECOPY
|
|
const MEM_COMMIT = 0x1000
|
|
const PAGE_NOACCESS = 0x01
|
|
const PAGE_GUARD = 0x100
|
|
const MBI_SIZE = 48 // MEMORY_BASIC_INFORMATION size on x64
|
|
|
|
const hProcess = this.OpenProcess(0x1F0FFF, false, pid)
|
|
if (!hProcess) return null
|
|
|
|
try {
|
|
// 枚举 RW 内存区域
|
|
const regions: Array<[number, number]> = []
|
|
let addr = 0
|
|
const mbi = Buffer.alloc(MBI_SIZE)
|
|
|
|
while (addr < 0x7FFFFFFFFFFF) {
|
|
const ret = VirtualQueryEx(hProcess, addr, mbi, MBI_SIZE)
|
|
if (ret === 0) break
|
|
// MEMORY_BASIC_INFORMATION x64 布局:
|
|
// 0: BaseAddress (8)
|
|
// 8: AllocationBase (8)
|
|
// 16: AllocationProtect (4) + 4 padding
|
|
// 24: RegionSize (8)
|
|
// 32: State (4)
|
|
// 36: Protect (4)
|
|
// 40: Type (4) + 4 padding = 48 total
|
|
const base = Number(mbi.readBigUInt64LE(0))
|
|
const size = Number(mbi.readBigUInt64LE(24))
|
|
const state = mbi.readUInt32LE(32)
|
|
const protect = mbi.readUInt32LE(36)
|
|
|
|
if (state === MEM_COMMIT &&
|
|
protect !== PAGE_NOACCESS &&
|
|
(protect & PAGE_GUARD) === 0 &&
|
|
(protect & RW_FLAGS) !== 0 &&
|
|
size <= 50 * 1024 * 1024) {
|
|
regions.push([base, size])
|
|
}
|
|
const next = base + size
|
|
if (next <= addr) break
|
|
addr = next
|
|
}
|
|
|
|
const totalMB = regions.reduce((s, [, sz]) => s + sz, 0) / 1024 / 1024
|
|
onProgress?.(`扫描 ${regions.length} 个 RW 区域 (${totalMB.toFixed(0)} MB)...`)
|
|
|
|
const CHUNK = 4 * 1024 * 1024
|
|
const OVERLAP = 65
|
|
|
|
for (let i = 0; i < regions.length; i++) {
|
|
const [base, size] = regions[i]
|
|
if (i % 20 === 0) {
|
|
onProgress?.(`扫描进度 ${i}/${regions.length}...`)
|
|
await new Promise(r => setTimeout(r, 1)) // 让出事件循环
|
|
}
|
|
|
|
let offset = 0
|
|
let trailing: Buffer | null = null
|
|
|
|
while (offset < size) {
|
|
const chunkSize = Math.min(CHUNK, size - offset)
|
|
const buf = Buffer.alloc(chunkSize)
|
|
const bytesReadOut = [0]
|
|
const ok = ReadProcessMemory(hProcess, base + offset, buf, chunkSize, bytesReadOut)
|
|
if (!ok || bytesReadOut[0] === 0) { offset += chunkSize; trailing = null; continue }
|
|
|
|
const data: Buffer = trailing ? Buffer.concat([trailing, buf.subarray(0, bytesReadOut[0])]) : buf.subarray(0, bytesReadOut[0])
|
|
|
|
// 搜索 ASCII 32字节密钥
|
|
const key = this._searchAsciiKey(data, ciphertext)
|
|
if (key) { this.CloseHandle(hProcess); return key }
|
|
|
|
// 搜索 UTF-16LE 32字节密钥
|
|
const key16 = this._searchUtf16Key(data, ciphertext)
|
|
if (key16) { this.CloseHandle(hProcess); return key16 }
|
|
|
|
trailing = data.subarray(Math.max(0, data.length - OVERLAP))
|
|
offset += chunkSize
|
|
}
|
|
}
|
|
|
|
return null
|
|
} finally {
|
|
this.CloseHandle(hProcess)
|
|
}
|
|
}
|
|
|
|
private _searchAsciiKey(data: Buffer, ciphertext: Buffer): string | null {
|
|
for (let i = 0; i < data.length - 34; i++) {
|
|
if (this._isAlphaNum(data[i])) continue
|
|
let valid = true
|
|
for (let j = 1; j <= 32; j++) {
|
|
if (!this._isAlphaNum(data[i + j])) { valid = false; break }
|
|
}
|
|
if (!valid) continue
|
|
if (i + 33 < data.length && this._isAlphaNum(data[i + 33])) continue
|
|
const keyBytes = data.subarray(i + 1, i + 33)
|
|
if (this._verifyAesKey(keyBytes, ciphertext)) return keyBytes.toString('ascii').substring(0, 16)
|
|
}
|
|
return null
|
|
}
|
|
|
|
private _searchUtf16Key(data: Buffer, ciphertext: Buffer): string | null {
|
|
for (let i = 0; i < data.length - 65; i++) {
|
|
let valid = true
|
|
for (let j = 0; j < 32; j++) {
|
|
if (data[i + j * 2 + 1] !== 0x00 || !this._isAlphaNum(data[i + j * 2])) { valid = false; break }
|
|
}
|
|
if (!valid) continue
|
|
const keyBytes = Buffer.alloc(32)
|
|
for (let j = 0; j < 32; j++) keyBytes[j] = data[i + j * 2]
|
|
if (this._verifyAesKey(keyBytes, ciphertext)) return keyBytes.toString('ascii').substring(0, 16)
|
|
}
|
|
return null
|
|
}
|
|
|
|
private _isAlphaNum(b: number): boolean {
|
|
return (b >= 0x61 && b <= 0x7A) || (b >= 0x41 && b <= 0x5A) || (b >= 0x30 && b <= 0x39)
|
|
}
|
|
|
|
private _verifyAesKey(keyBytes: Buffer, ciphertext: Buffer): boolean {
|
|
try {
|
|
const decipher = crypto.createDecipheriv('aes-128-ecb', keyBytes.subarray(0, 16), null)
|
|
decipher.setAutoPadding(false)
|
|
const dec = Buffer.concat([decipher.update(ciphertext), decipher.final()])
|
|
// 支持 JPEG / PNG / WEBP / WXGF / GIF
|
|
if (dec[0] === 0xFF && dec[1] === 0xD8 && dec[2] === 0xFF) return true
|
|
if (dec[0] === 0x89 && dec[1] === 0x50 && dec[2] === 0x4E && dec[3] === 0x47) return true
|
|
if (dec[0] === 0x52 && dec[1] === 0x49 && dec[2] === 0x46 && dec[3] === 0x46) return true
|
|
if (dec[0] === 0x77 && dec[1] === 0x78 && dec[2] === 0x67 && dec[3] === 0x66) return true
|
|
if (dec[0] === 0x47 && dec[1] === 0x49 && dec[2] === 0x46) return true
|
|
return false
|
|
} catch { return false }
|
|
}
|
|
}
|