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| 1 | +/** |
| 2 | + * 费曼录音持久化 IPC — {userData}/recordings 目录读写 |
| 3 | + * Feynman recording persistence — IPC bridge for {userData}/recordings |
| 4 | + * |
| 5 | + * @ai-context: E2 跨会话回放——录音 WAV 本地落盘(本地优先,不上传)。 |
| 6 | + * fileName 强制安全字符 + .wav 后缀(防路径穿越);保存前确保目录存在; |
| 7 | + * 读取不存在时返回 not_found 供调用方静默回退(可选增强原则)。 |
| 8 | + * @ai-context: Local-first WAV persistence for cross-session playback. |
| 9 | + * File names are strictly validated to prevent path traversal; missing |
| 10 | + * files surface as not_found so the renderer can degrade silently. |
| 11 | + */ |
| 12 | +import { app } from 'electron'; |
| 13 | +import * as path from 'path'; |
| 14 | +import { mkdir, writeFile, readFile, rm } from 'fs/promises'; |
| 15 | +import { safeHandle } from '../ipcUtils.js'; |
| 16 | +import { logger } from '../logger.js'; |
| 17 | + |
| 18 | +/** 安全文件名:字母数字/下划线/连字符,1-80 字符(防路径穿越) */ |
| 19 | +const SAFE_NAME_RE = /^[A-Za-z0-9_-]{1,80}$/; |
| 20 | + |
| 21 | +/** 录音根目录:{userData}/recordings */ |
| 22 | +function recordingsRoot(): string { |
| 23 | + return path.join(app.getPath('userData'), 'recordings'); |
| 24 | +} |
| 25 | + |
| 26 | +/** 校验 fileName(不含扩展名,主进程统一追加 .wav) */ |
| 27 | +function isSafeStem(stem: unknown): stem is string { |
| 28 | + return typeof stem === 'string' && SAFE_NAME_RE.test(stem); |
| 29 | +} |
| 30 | + |
| 31 | +/** |
| 32 | + * 注册 recording:* IPC handlers(app ready 后调用一次)。 |
| 33 | + * - recording:save { stem, base64 } → 写 {userData}/recordings/{stem}.wav |
| 34 | + * - recording:load { stem } → 读文件返回 base64(不存在 → not_found) |
| 35 | + * - recording:delete { stem } → 删除文件(失败静默) |
| 36 | + */ |
| 37 | +export function registerRecordingIpcHandlers(): void { |
| 38 | + // ---- 保存录音 WAV(base64 → 文件)---- |
| 39 | + safeHandle('recording:save', async (_event, args: { stem: string; base64: string }) => { |
| 40 | + const stem = args?.stem; |
| 41 | + if (!isSafeStem(stem)) { |
| 42 | + throw new Error('非法的录音文件名(仅允许字母数字/下划线/连字符)'); |
| 43 | + } |
| 44 | + if (typeof args?.base64 !== 'string' || args.base64.length === 0) { |
| 45 | + throw new Error('录音数据不能为空'); |
| 46 | + } |
| 47 | + const dir = recordingsRoot(); |
| 48 | + await mkdir(dir, { recursive: true }); |
| 49 | + await writeFile(path.join(dir, `${stem}.wav`), Buffer.from(args.base64, 'base64')); |
| 50 | + return { success: true, fileName: `${stem}.wav` }; |
| 51 | + }); |
| 52 | + |
| 53 | + // ---- 读取录音 WAV(跨会话回放)---- |
| 54 | + safeHandle('recording:load', async (_event, args: { stem: string }) => { |
| 55 | + const stem = args?.stem; |
| 56 | + if (!isSafeStem(stem)) { |
| 57 | + throw new Error('非法的录音文件名'); |
| 58 | + } |
| 59 | + try { |
| 60 | + const data = await readFile(path.join(recordingsRoot(), `${stem}.wav`)); |
| 61 | + return { success: true, base64: data.toString('base64') }; |
| 62 | + } catch (err) { |
| 63 | + const code = (err as NodeJS.ErrnoException)?.code; |
| 64 | + if (code === 'ENOENT') return { success: false, notFound: true }; |
| 65 | + logger.warn(`[Recording] load failed: ${String(err)}`); |
| 66 | + return { success: false, error: 'read_failed' }; |
| 67 | + } |
| 68 | + }); |
| 69 | + |
| 70 | + // ---- 删除录音(本地缓存清理,失败静默)---- |
| 71 | + safeHandle('recording:delete', async (_event, args: { stem: string }) => { |
| 72 | + const stem = args?.stem; |
| 73 | + if (!isSafeStem(stem)) { |
| 74 | + throw new Error('非法的录音文件名'); |
| 75 | + } |
| 76 | + try { |
| 77 | + await rm(path.join(recordingsRoot(), `${stem}.wav`), { force: true }); |
| 78 | + } catch { |
| 79 | + /* 删除失败静默——不阻塞 UI */ |
| 80 | + } |
| 81 | + return { success: true }; |
| 82 | + }); |
| 83 | +} |
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