refactor: 移除微信 3.0 解密路径, 统一走 4.0 WCDB

- wechat-db.ts 删除 SQLCipher 回退、connectDb、getUser、tryOpenWechat4 等 3.0 专属逻辑
- image-decrypt-service.ts 删除 decryptDatV3 与 version === 0 分支
- index.ts 去除 wcdb4Client 冗余空值检查
- 移除 better-sqlite3-multiple-ciphers 依赖
- README 版本前置改为 4.0+

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

README.md

@@ -50,8 +50,7 @@ MAC系统 获取微信聊天记录 AI一键生成群聊总结
 ### 使用前置要求
 
 - **微信版本**:
-  - 微信 <= 4.0: 可正常使用，获取数据库密码方式参考：[Mac 导出微信聊天记录](https://blog.vcvit.me/2024/08/02/mac-export-wechat-chat-records/)
+  - 微信 4.0+: 已支持部分能力，仍在持续迭代与兼容性验证中；如需更成熟的完整方案，推荐使用 [WeFlow](https://github.com/hicccc77/WeFlow) [Chatlog](https://github.com/sjzar/chatlog)
-  - 微信 >= 4.0: 已支持部分能力，仍在持续迭代与兼容性验证中；如需更成熟的完整方案，推荐使用 [WeFlow](https://github.com/hicccc77/WeFlow) [Chatlog](https://github.com/sjzar/chatlog)
 - 如无法获取本地数据库密码，则无法使用当前项目
 - Node.js (推荐 v16+)
 - pnpm@7

package.json

@@ -31,7 +31,6 @@
   "dependencies": {
     "@electron-toolkit/preload": "^3.0.2",
     "@electron-toolkit/utils": "^4.0.0",
-    "better-sqlite3-multiple-ciphers": "^12.5.0",
     "fs-extra": "^11.3.2",
     "fzstd": "^0.1.1",
     "koffi": "^2.9.0",

pnpm-lock.yaml

@@ -16,7 +16,6 @@ specifiers:
   '@types/react': ^19.2.7
   '@types/react-dom': ^19.2.3
   '@vitejs/plugin-react': ^5.1.1
-  better-sqlite3-multiple-ciphers: ^12.5.0
   electron: ^39.2.6
   electron-builder: ^26.0.12
   electron-vite: ^5.0.0
@@ -38,7 +37,6 @@ specifiers:
 dependencies:
   '@electron-toolkit/preload': 3.0.2_electron@39.2.6
   '@electron-toolkit/utils': 4.0.0_electron@39.2.6
-  better-sqlite3-multiple-ciphers: 12.5.0
   fs-extra: 11.3.2
   fzstd: 0.1.1
   koffi: 2.16.2
@@ -1578,32 +1576,20 @@ packages:
 
   /base64-js/1.5.1:
     resolution: {integrity: sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==}
+    dev: true
 
   /baseline-browser-mapping/2.9.5:
     resolution: {integrity: sha512-D5vIoztZOq1XM54LUdttJVc96ggEsIfju2JBvht06pSzpckp3C7HReun67Bghzrtdsq9XdMGbSSB3v3GhMNmAA==}
     hasBin: true
     dev: true
 
-  /better-sqlite3-multiple-ciphers/12.5.0:
-    resolution: {integrity: sha512-bYbiV0TdCIQFqlI122+wIFnc3yXWHyz8A/026Y/YfiA3vKcC0wLnHqqociNehpFmbRSowuY3Ko8SyUhBXI9+4A==}
-    engines: {node: 20.x || 22.x || 23.x || 24.x}
-    dependencies:
-      bindings: 1.5.0
-      prebuild-install: 7.1.3
-    dev: false
-
-  /bindings/1.5.0:
-    resolution: {integrity: sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==}
-    dependencies:
-      file-uri-to-path: 1.0.0
-    dev: false
-
   /bl/4.1.0:
     resolution: {integrity: sha512-1W07cM9gS6DcLperZfFSj+bWLtaPGSOHWhPiGzXmvVJbRLdG82sH/Kn8EtW1VqWVA54AKf2h5k5BbnIbwF3h6w==}
     dependencies:
       buffer: 5.7.1
       inherits: 2.0.4
       readable-stream: 3.6.2
+    dev: true
 
   /boolean/3.2.0:
     resolution: {integrity: sha512-d0II/GO9uf9lfUHH2BQsjxzRJZBdsjgsBiW4BvhWk/3qoKwQFjIDVN19PfX8F2D/r9PCMTtLWjYVCFrpeYUzsw==}
@@ -1647,6 +1633,7 @@ packages:
     dependencies:
       base64-js: 1.5.1
       ieee754: 1.2.1
+    dev: true
 
   /builder-util-runtime/9.3.1:
     resolution: {integrity: sha512-2/egrNDDnRaxVwK3A+cJq6UOlqOdedGA7JPqCeJjN2Zjk1/QB/6QUi3b714ScIGS7HafFXTyzJEOr5b44I3kvQ==}
@@ -1772,10 +1759,6 @@ packages:
       supports-color: 7.2.0
     dev: true
 
-  /chownr/1.1.4:
-    resolution: {integrity: sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==}
-    dev: false
-
   /chownr/2.0.0:
     resolution: {integrity: sha512-bIomtDF5KGpdogkLd9VspvFzk9KfpyyGlS8YFVZl7TGPBHL5snIOnxeshwVgPteQ9b4Eydl+pVbIyE1DcvCWgQ==}
     engines: {node: '>=10'}
@@ -1947,11 +1930,6 @@ packages:
     dependencies:
       mimic-response: 3.1.0
 
-  /deep-extend/0.6.0:
-    resolution: {integrity: sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==}
-    engines: {node: '>=4.0.0'}
-    dev: false
-
   /deep-is/0.1.4:
     resolution: {integrity: sha512-oIPzksmTg4/MriiaYGO+okXDT7ztn/w3Eptv/+gSIdMdKsJo0u4CfYNFJPy+4SKMuCqGw2wxnA+URMg3t8a/bQ==}
     dev: true
@@ -1990,6 +1968,7 @@ packages:
   /detect-libc/2.1.2:
     resolution: {integrity: sha512-Btj2BOOO83o3WyH59e8MgXsxEQVcarkUOpEYrubB0urwnN10yQ364rsiByU11nZlqWYZm05i/of7io4mzihBtQ==}
     engines: {node: '>=8'}
+    dev: true
 
   /detect-node/2.1.0:
     resolution: {integrity: sha512-T0NIuQpnTvFDATNuHN5roPwSBG83rFsuO+MXXH9/3N1eFbn4wcPjttvjMLEPWJ0RGUYgQE7cGgS3tNxbqCGM7g==}
@@ -2528,11 +2507,6 @@ packages:
     engines: {node: '>=0.10.0'}
     dev: true
 
-  /expand-template/2.0.3:
-    resolution: {integrity: sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg==}
-    engines: {node: '>=6'}
-    dev: false
-
   /exponential-backoff/3.1.3:
     resolution: {integrity: sha512-ZgEeZXj30q+I0EN+CbSSpIyPaJ5HVQD18Z1m+u1FXbAeT94mr1zw50q4q6jiiC447Nl/YTcIYSAftiGqetwXCA==}
     dev: true
@@ -2596,10 +2570,6 @@ packages:
       flat-cache: 4.0.1
     dev: true
 
-  /file-uri-to-path/1.0.0:
-    resolution: {integrity: sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==}
-    dev: false
-
   /filelist/1.0.4:
     resolution: {integrity: sha512-w1cEuf3S+DrLCQL7ET6kz+gmlJdbq9J7yXCSjK/OZCPA+qEN1WyF4ZAf0YYJa4/shHJra2t/d/r8SV4Ji+x+8Q==}
     dependencies:
@@ -2652,10 +2622,6 @@ packages:
       mime-types: 2.1.35
     dev: true
 
-  /fs-constants/1.0.0:
-    resolution: {integrity: sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow==}
-    dev: false
-
   /fs-extra/10.1.0:
     resolution: {integrity: sha512-oRXApq54ETRj4eMiFzGnHWGy+zo5raudjuxN0b8H7s/RU2oW0Wvsx9O0ACRN/kRq9E8Vu/ReskGB5o3ji+FzHQ==}
     engines: {node: '>=12'}
@@ -2787,10 +2753,6 @@ packages:
       get-intrinsic: 1.3.0
     dev: true
 
-  /github-from-package/0.0.0:
-    resolution: {integrity: sha512-SyHy3T1v2NUXn29OsWdxmK6RwHD+vkj3v8en8AOBZ1wBQ/hCAQ5bAQTD02kW4W9tUp/3Qh6J8r9EvntiyCmOOw==}
-    dev: false
-
   /glob-parent/6.0.2:
     resolution: {integrity: sha512-XxwI8EOhVQgWp6iDL+3b0r86f4d6AX6zSU55HfB4ydCEuXLXc5FcYeOu+nnGftS4TEju/11rt4KJPTMgbfmv4A==}
     engines: {node: '>=10.13.0'}
@@ -3020,6 +2982,7 @@ packages:
 
   /ieee754/1.2.1:
     resolution: {integrity: sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==}
+    dev: true
 
   /ignore/5.3.2:
     resolution: {integrity: sha512-hsBTNUqQTDwkWtcdYI2i06Y/nUBEsNEDJKjWdigLvegy8kDuJAS8uRlpkkcQpyEXL0Z/pjDy5HBmMjRCJ2gq+g==}
@@ -3063,10 +3026,7 @@ packages:
 
   /inherits/2.0.4:
     resolution: {integrity: sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==}
-
+    dev: true
-  /ini/1.3.8:
-    resolution: {integrity: sha512-JV/yugV2uzW5iMRSiZAyDtQd+nxtUnjeLt0acNdw98kKLrvuRVyB80tsREOE7yvGVgalhZ6RNXCmEHkUKBKxew==}
-    dev: false
 
   /internal-slot/1.1.0:
     resolution: {integrity: sha512-4gd7VpWNQNB4UKKCFFVcp1AVv+FMOgs9NKzjHKusc8jTMhd5eL1NqQqOpE0KzMds804/yHlglp3uxgluOqAPLw==}
@@ -3574,6 +3534,7 @@ packages:
 
   /minimist/1.2.8:
     resolution: {integrity: sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==}
+    dev: true
 
   /minipass-collect/1.0.2:
     resolution: {integrity: sha512-6T6lH0H8OG9kITm/Jm6tdooIbogG9e0tLgpY6mphXSm/A9u8Nq1ryBG+Qspiub9LjWlBPsPS3tWQ/Botq4FdxA==}
@@ -3639,10 +3600,6 @@ packages:
       yallist: 4.0.0
     dev: true
 
-  /mkdirp-classic/0.5.3:
-    resolution: {integrity: sha512-gKLcREMhtuZRwRAfqP3RFW+TK4JqApVBtOIftVgjuABpAtpxhPGaDcfvbhNvD0B8iD1oUr/txX35NjcaY6Ns/A==}
-    dev: false
-
   /mkdirp/1.0.4:
     resolution: {integrity: sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==}
     engines: {node: '>=10'}
@@ -3658,10 +3615,6 @@ packages:
     hasBin: true
     dev: true
 
-  /napi-build-utils/2.0.0:
-    resolution: {integrity: sha512-GEbrYkbfF7MoNaoh2iGG84Mnf/WZfB0GdGEsM8wz7Expx/LlWf5U8t9nvJKXSp3qr5IsEbK04cBGhol/KwOsWA==}
-    dev: false
-
   /natural-compare/1.4.0:
     resolution: {integrity: sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==}
     dev: true
@@ -3676,6 +3629,7 @@ packages:
     engines: {node: '>=10'}
     dependencies:
       semver: 7.7.3
+    dev: true
 
   /node-addon-api/1.7.2:
     resolution: {integrity: sha512-ibPK3iA+vaY1eEjESkQkM0BbCqFOaZMiXRTtdB0u7b4djtY6JnsjvPdUHVMg6xQt3B8fpTTWHI9A+ADjM9frzg==}
@@ -3924,25 +3878,6 @@ packages:
       source-map-js: 1.2.1
     dev: true
 
-  /prebuild-install/7.1.3:
-    resolution: {integrity: sha512-8Mf2cbV7x1cXPUILADGI3wuhfqWvtiLA1iclTDbFRZkgRQS0NqsPZphna9V+HyTEadheuPmjaJMsbzKQFOzLug==}
-    engines: {node: '>=10'}
-    hasBin: true
-    dependencies:
-      detect-libc: 2.1.2
-      expand-template: 2.0.3
-      github-from-package: 0.0.0
-      minimist: 1.2.8
-      mkdirp-classic: 0.5.3
-      napi-build-utils: 2.0.0
-      node-abi: 3.85.0
-      pump: 3.0.3
-      rc: 1.2.8
-      simple-get: 4.0.1
-      tar-fs: 2.1.4
-      tunnel-agent: 0.6.0
-    dev: false
-
   /prelude-ls/1.2.1:
     resolution: {integrity: sha512-vkcDPrRZo1QZLbn5RLGPpg/WmIQ65qoWWhcGKf/b5eplkkarX0m9z8ppCat4mlOqUsWpyNuYgO3VRyrYHSzX5g==}
     engines: {node: '>= 0.8.0'}
@@ -4010,16 +3945,6 @@ packages:
     resolution: {integrity: sha512-WuyALRjWPDGtt/wzJiadO5AXY+8hZ80hVpe6MyivgraREW751X3SbhRvG3eLKOYN+8VEvqLcf3wdnt44Z4S4SA==}
     engines: {node: '>=10'}
 
-  /rc/1.2.8:
-    resolution: {integrity: sha512-y3bGgqKj3QBdxLbLkomlohkvsA8gdAiUQlSBJnBhfn+BPxg4bc62d8TcBW15wavDfgexCgccckhcZvywyQYPOw==}
-    hasBin: true
-    dependencies:
-      deep-extend: 0.6.0
-      ini: 1.3.8
-      minimist: 1.2.8
-      strip-json-comments: 2.0.1
-    dev: false
-
   /react-dom/19.2.1_react@19.2.1:
     resolution: {integrity: sha512-ibrK8llX2a4eOskq1mXKu/TGZj9qzomO+sNfO98M6d9zIPOEhlBkMkBUBLd1vgS0gQsLDBzA+8jJBVXDnfHmJg==}
     peerDependencies:
@@ -4059,6 +3984,7 @@ packages:
       inherits: 2.0.4
       string_decoder: 1.3.0
       util-deprecate: 1.0.2
+    dev: true
 
   /reflect.getprototypeof/1.0.10:
     resolution: {integrity: sha512-00o4I+DVrefhv+nX0ulyi3biSHCPDe+yLv5o/p6d/UVlirijB8E16FtfwSAi4g3tcqrQ4lRAqQSoFEZJehYEcw==}
@@ -4198,6 +4124,7 @@ packages:
 
   /safe-buffer/5.2.1:
     resolution: {integrity: sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==}
+    dev: true
 
   /safe-push-apply/1.0.0:
     resolution: {integrity: sha512-iKE9w/Z7xCzUMIZqdBsp6pEQvwuEebH4vdpjcDWnyzaI6yl6O9FHvVpmGelvEHNsoY6wGblkxR6Zty/h00WiSA==}
@@ -4356,18 +4283,6 @@ packages:
     engines: {node: '>=16.11.0'}
     dev: false
 
-  /simple-concat/1.0.1:
-    resolution: {integrity: sha512-cSFtAPtRhljv69IK0hTVZQ+OfE9nePi/rtJmw5UjHeVyVroEqJXP1sFztKUy1qU+xvz3u/sfYJLa947b7nAN2Q==}
-    dev: false
-
-  /simple-get/4.0.1:
-    resolution: {integrity: sha512-brv7p5WgH0jmQJr1ZDDfKDOSeWWg+OVypG99A/5vYGPqJ6pxiaHLy8nxtFjBA7oMa01ebA9gfh1uMCFqOuXxvA==}
-    dependencies:
-      decompress-response: 6.0.0
-      once: 1.4.0
-      simple-concat: 1.0.1
-    dev: false
-
   /simple-update-notifier/2.0.0:
     resolution: {integrity: sha512-a2B9Y0KlNXl9u/vsW6sTIu9vGEpfKu2wRV6l1H3XEas/0gUIzGzBoP/IouTcUQbm9JWZLH3COxyn03TYlFax6w==}
     engines: {node: '>=10'}
@@ -4530,6 +4445,7 @@ packages:
     resolution: {integrity: sha512-hkRX8U1WjJFd8LsDJ2yQ/wWWxaopEsABU1XfkM8A+j0+85JAGppt16cr1Whg6KIbb4okU6Mql6BOj+uup/wKeA==}
     dependencies:
       safe-buffer: 5.2.1
+    dev: true
 
   /strip-ansi/6.0.1:
     resolution: {integrity: sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==}
@@ -4545,11 +4461,6 @@ packages:
       ansi-regex: 6.2.2
     dev: true
 
-  /strip-json-comments/2.0.1:
-    resolution: {integrity: sha512-4gB8na07fecVVkOI6Rs4e7T6NOTki5EmL7TUduTs6bu3EdnSycntVJ4re8kgZA+wx9IueI2Y11bfbgwtzuE0KQ==}
-    engines: {node: '>=0.10.0'}
-    dev: false
-
   /strip-json-comments/3.1.1:
     resolution: {integrity: sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==}
     engines: {node: '>=8'}
@@ -4582,26 +4493,6 @@ packages:
       '@pkgr/core': 0.2.9
     dev: true
 
-  /tar-fs/2.1.4:
-    resolution: {integrity: sha512-mDAjwmZdh7LTT6pNleZ05Yt65HC3E+NiQzl672vQG38jIrehtJk/J3mNwIg+vShQPcLF/LV7CMnDW6vjj6sfYQ==}
-    dependencies:
-      chownr: 1.1.4
-      mkdirp-classic: 0.5.3
-      pump: 3.0.3
-      tar-stream: 2.2.0
-    dev: false
-
-  /tar-stream/2.2.0:
-    resolution: {integrity: sha512-ujeqbceABgwMZxEJnk2HDY2DlnUZ+9oEcb1KzTVfYHio0UE6dG71n60d8D2I4qNvleWrrXpmjpt7vZeF1LnMZQ==}
-    engines: {node: '>=6'}
-    dependencies:
-      bl: 4.1.0
-      end-of-stream: 1.4.5
-      fs-constants: 1.0.0
-      inherits: 2.0.4
-      readable-stream: 3.6.2
-    dev: false
-
   /tar/6.2.1:
     resolution: {integrity: sha512-DZ4yORTwrbTj/7MZYq2w+/ZFdI6OZ/f9SFHR+71gIVUZhOQPHzVCLpvRnPgyaMpfWxxk/4ONva3GQSyNIKRv6A==}
     engines: {node: '>=10'}
@@ -4661,12 +4552,6 @@ packages:
       typescript: 5.9.3
     dev: true
 
-  /tunnel-agent/0.6.0:
-    resolution: {integrity: sha512-McnNiV1l8RYeY8tBgEpuodCC1mLUdbSN+CYBL7kJsJNInOP8UjDDEwdk6Mw60vdLLrr5NHKZhMAOSrR2NZuQ+w==}
-    dependencies:
-      safe-buffer: 5.2.1
-    dev: false
-
   /type-check/0.4.0:
     resolution: {integrity: sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew==}
     engines: {node: '>= 0.8.0'}
@@ -4805,6 +4690,7 @@ packages:
 
   /util-deprecate/1.0.2:
     resolution: {integrity: sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==}
+    dev: true
 
   /verror/1.10.1:
     resolution: {integrity: sha512-veufcmxri4e3XSrT0xwfUR7kguIkaxBeosDg00yDWhk49wdwkSUrvvsm7nc75e1PUyvIeZj6nS8VQRYz2/S4Xg==}

src/main/image-decrypt-service.ts

@@ -241,15 +241,11 @@ export class ImageDecryptService {
       )
 
       let decrypted: Buffer
-      if (version === 0) {
+      if (version === 1) {
-        console.log('[ImageDecrypt] using V3 (XOR only)')
-        decrypted = this.decryptDatV3(datPath)
-      } else if (version === 1) {
         console.log('[ImageDecrypt] using V1 (default AES key)')
         const key = Buffer.from(this.defaultV1AesKey, 'ascii')
         decrypted = this.decryptDatV4(datPath, key)
-      } else {
+      } else if (version === 2) {
-        // version === 2
         console.log('[ImageDecrypt] using V2 (user AES key)')
         if (!this.aesKey) {
           console.log('[ImageDecrypt] no AES key configured')
@@ -257,6 +253,9 @@ export class ImageDecryptService {
         }
         const key = Buffer.from(this.aesKey, 'ascii').slice(0, 16)
         decrypted = this.decryptDatV4(datPath, key)
+      } else {
+        console.log('[ImageDecrypt] unsupported dat version:', version)
+        return null
       }
 
       return decrypted
@@ -310,18 +309,6 @@ export class ImageDecryptService {
     return 0
   }
 
-  /**
-   * V3 解密 - 仅 XOR
-   */
-  private decryptDatV3(inputPath: string): Buffer {
-    const data = readFileSync(inputPath)
-    const out = Buffer.alloc(data.length)
-    for (let i = 0; i < data.length; i += 1) {
-      out[i] = data[i] ^ this.xorKey
-    }
-    return out
-  }
-
   /**
    * V4 解密 - AES + XOR
    */

src/main/index.ts

@@ -113,16 +113,13 @@ app.whenReady().then(() => {
       wechatDb?.close()
       wechatDb = nextWechatDb
       const wcdb4Client = nextWechatDb.getWcdb4Client()
-      let monitoring = false
-      if (wcdb4Client) {
       voiceService = new VoiceService(wcdb4Client)
       stickerService = new StickerService(wcdb4Client)
-        monitoring = wcdb4Client.startMonitor((type, json) => {
+      const monitoring = wcdb4Client.startMonitor((type, json) => {
         for (const window of BrowserWindow.getAllWindows()) {
           if (!window.isDestroyed()) window.webContents.send('wcdb-change', { type, json })
         }
       })
-      }
       imageDecryptService = null
       return { success: true, monitoring }
     } catch (error) {
@@ -206,12 +203,11 @@ app.whenReady().then(() => {
   ipcMain.handle('db:getMessages', (_, userMd5: string, startTime?: number, endTime?: number) => {
     if (!wechatDb) return []
     const wcdb4Client = wechatDb.getWcdb4Client()
-    const username = wcdb4Client?.getUsernameByMd5(userMd5)
+    const username = wcdb4Client.getUsernameByMd5(userMd5)
     const rawMessages = wechatDb.getUserMessages(userMd5, startTime, endTime)
     const groupMembers = wechatDb.getGroupMembersForChat(userMd5)
     const myAvatar = wechatDb.getMyAvatarUrl()
-    const myGroupNickname =
+    const myGroupNickname = username?.endsWith('@chatroom')
-      username?.endsWith('@chatroom') && wcdb4Client
       ? wcdb4Client.getMyGroupNickname(username)
       : undefined
 
@@ -281,7 +277,7 @@ app.whenReady().then(() => {
             const imageDatName = parseImageDatNameFromRow(msg)
             contentData = { ...parsed, datName: parsed.datName || imageDatName }
           } else if (parsed.type !== 'system') {
-            if (parsed.type === 'sticker' && !parsed.url && parsed.md5 && wcdb4Client) {
+            if (parsed.type === 'sticker' && !parsed.url && parsed.md5) {
               parsed.url = wcdb4Client.resolveEmoticonCdnUrl(parsed.md5)
             }
             contentData = parsed
@@ -301,7 +297,7 @@ app.whenReady().then(() => {
       ) {
         const parsed = parseStickerMessageFromRow(msg, content)
         if (parsed.type === 'sticker') {
-          if (!parsed.url && parsed.md5 && wcdb4Client) {
+          if (!parsed.url && parsed.md5) {
             parsed.url = wcdb4Client.resolveEmoticonCdnUrl(parsed.md5)
           }
           content = ''
@@ -333,7 +329,6 @@ app.whenReady().then(() => {
   ipcMain.handle('db:getGroupSnapshot', (_, userMd5: string) => {
     if (!wechatDb) return null
     const wcdb4Client = wechatDb.getWcdb4Client()
-    if (!wcdb4Client) return null
 
     const roomId = wcdb4Client.getUsernameByMd5(userMd5)
     if (!roomId || !roomId.endsWith('@chatroom')) return null

src/main/wechat-db.ts

@@ -1,12 +1,5 @@
-import DatabaseConstructor from 'better-sqlite3-multiple-ciphers'
-import fs from 'fs-extra'
-import path from 'path'
-import crypto from 'crypto'
-import os from 'os'
 import { Wcdb4Client } from './wcdb4-client'
 
-type Database = import('better-sqlite3-multiple-ciphers').Database
-
 export interface UserContact {
   m_nsUsrName: string
   nickname: string
@@ -38,166 +31,22 @@ export interface GroupMemberInfo {
 }
 
 export class WechatDb {
-  private static WECHAT_DIR = path.join(
+  private wcdb4Client: Wcdb4Client
-    os.homedir(),
-    'Library/Containers/com.tencent.xinWeChat/Data/Library/Application Support/com.tencent.xinWeChat/2.0b4.0.9'
-  )
-
-  private rawKey: string
-  private correctUserId: string | null = null
-  private chatDb: { name: string; db_number: string }[] | null = null
-  private groupMemberCache = new Map<string, GroupMemberInfo | null>()
-  private wcdb4Client: Wcdb4Client | null = null
   private chatMd5ToUsername = new Map<string, string>()
-  private wechat4OpenError: string | null = null
 
   constructor(rawKey: string) {
-    this.rawKey = rawKey
     console.log(`Initializing WechatDb with key length: ${rawKey.trim().length}`)
-
+    const client = new Wcdb4Client(rawKey)
-    if (this.tryOpenWechat4()) {
-      this.chatDb = this.getChatDbNumber()
-      return
-    }
-
-    if (!fs.existsSync(WechatDb.WECHAT_DIR)) {
-      throw new Error(`WeChat directory not found at ${WechatDb.WECHAT_DIR}`)
-    }
-
-    if (this.getUser()) {
-      console.log('User found, getting chat DB number')
-      this.chatDb = this.getChatDbNumber()
-    } else {
-      throw new Error(
-        `No valid user found or invalid key${this.wechat4OpenError ? `; WeChat 4.0 error: ${this.wechat4OpenError}` : ''}`
-      )
-    }
-  }
-
-  private tryOpenWechat4(): boolean {
-    try {
-      const client = new Wcdb4Client(this.rawKey)
     client.open()
     this.wcdb4Client = client
-      console.log('Opened WeChat 4.0 database with WechatExplorer WCDB native adapter')
+    for (const table of client.getChatTables()) {
-      return true
-    } catch (error) {
-      this.wechat4OpenError = error instanceof Error ? error.message : String(error)
-      console.warn('WeChat 4.0 open failed, fallback to 3.0 SQLCipher mode:', error)
-      this.wcdb4Client = null
-      return false
-    }
-  }
-
-  private connectDb(dbPath: string): Database | null {
-    const targetPath = path.resolve(dbPath)
-    if (!fs.existsSync(targetPath)) {
-      console.error(`❌ 错误：数据库文件不存在于路径：${targetPath}`)
-      return null
-    }
-
-    try {
-      const db = new DatabaseConstructor(targetPath, {
-        // verbose: console.log
-      })
-
-      // 配置加密方案 (Cipher Scheme)
-      db.pragma("cipher='sqlcipher'")
-      db.pragma('cipher_page_size = 1024')
-      db.pragma('legacy=3')
-      db.pragma('kdf_iter = 64000')
-      db.pragma('cipher_hmac_algorithm = HMAC_SHA1')
-      db.pragma('cipher_kdf_algorithm = PBKDF2_HMAC_SHA1')
-
-      const processedKey = this.processRawKey(this.rawKey)
-      // console.log(`🔑 应用密钥 (前6位): ${processedKey.substring(0, 6)}...`)
-
-      db.pragma(`key = "x'${processedKey}'"`)
-
-      // 验证连接
-      db.prepare('SELECT count(*) as count FROM sqlite_master').get()
-
-      return db
-    } catch (error) {
-      console.error(`❌ 连接失败:`, error)
-
-      const errString = String(error)
-      if (errString.includes('file is not a database')) {
-        console.error(
-          "💡 诊断建议：\n1. 请确认是否已安装 'better-sqlite3-multiple-ciphers'。\n2. 检查密钥是否正确（WeChat密钥与设备强绑定）。\n3. 尝试将页大小改为 4096 (db.pragma('cipher_page_size = 4096'))。"
-        )
-      } else if (errString.includes('HMAC')) {
-        console.error(
-          '💡 诊断建议：密钥可能正确，但HMAC算法或页大小不匹配。尝试调整 cipher_hmac_algorithm。'
-        )
-      }
-
-      return null
-    }
-  }
-
-  private processRawKey(key: string): string {
-    // 移除可能的 '0x' 前缀并修剪空格
-    return key.replace(/^0x/i, '').trim()
-  }
-
-  private getUser(): boolean {
-    const keyValuePath = path.join(WechatDb.WECHAT_DIR, 'KeyValue')
-    if (!fs.existsSync(keyValuePath)) return false
-
-    const contents = fs.readdirSync(keyValuePath)
-    const potentialUsers = contents.filter((name) => !name.startsWith('.'))
-
-    for (const user of potentialUsers) {
-      const dbPath = path.join(keyValuePath, user, 'KeyValue.db')
-      if (fs.existsSync(dbPath)) {
-        const db = this.connectDb(dbPath)
-        if (db) {
-          this.correctUserId = user
-          console.log(`Valid user found: ${user}`)
-          db.close()
-          return true
-        }
-      }
-    }
-    return false
-  }
-
-  private getChatDbNumber(): { name: string; db_number: string }[] {
-    if (this.wcdb4Client) {
-      const chatDb = this.wcdb4Client.getChatTables()
-      this.chatMd5ToUsername.clear()
-      for (const table of chatDb) {
       if (table.name.startsWith('Chat_')) {
         this.chatMd5ToUsername.set(table.name.substring(5), table.db_number)
       }
     }
-      return chatDb
-    }
-
-    const chatDb: { name: string; db_number: string }[] = []
-    if (!this.correctUserId) return []
-
-    for (let i = 0; i < 10; i++) {
-      const dbPath = path.join(WechatDb.WECHAT_DIR, this.correctUserId, 'Message', `msg_${i}.db`)
-      if (!fs.existsSync(dbPath)) continue
-
-      const db = this.connectDb(dbPath)
-      if (db) {
-        const tables = db
-          .prepare("SELECT name FROM sqlite_master WHERE type='table' AND name LIKE 'Chat_%'")
-          .all() as { name: string }[]
-        for (const table of tables) {
-          chatDb.push({ name: table.name, db_number: `msg_${i}.db` })
-        }
-        db.close()
-      }
-    }
-    return chatDb
   }
 
   public getUserList(nicknameFilter?: string): UserContact[] {
-    if (this.wcdb4Client) {
     const keyword = (nicknameFilter || '').trim().toLowerCase()
     return this.wcdb4Client
       .getSessions()
@@ -215,23 +64,7 @@ export class WechatDb {
       })
   }
 
-    if (!this.correctUserId) return []
-    const dbPath = path.join(WechatDb.WECHAT_DIR, this.correctUserId, 'Contact/wccontact_new2.db')
-    const db = this.connectDb(dbPath)
-    if (!db) return []
-
-    let query = "SELECT m_nsUsrName, nickname FROM WCContact WHERE m_nsUsrName NOT LIKE 'gh_%'"
-    if (nicknameFilter) {
-      query += ` AND nickname LIKE '%${nicknameFilter}%'`
-    }
-
-    const results = db.prepare(query).all() as unknown as UserContact[]
-    db.close()
-    return results
-  }
-
   public getAllGroupContacts(): Record<string, string> {
-    if (this.wcdb4Client) {
     const groupContacts: Record<string, string> = {}
     for (const session of this.wcdb4Client.getSessions()) {
       if (session.username.endsWith('@chatroom')) {
@@ -241,29 +74,7 @@ export class WechatDb {
     return groupContacts
   }
 
-    if (!this.correctUserId) return {}
-    const dbPath = path.join(WechatDb.WECHAT_DIR, this.correctUserId, 'Group/group_new.db')
-    const db = this.connectDb(dbPath)
-    if (!db) return {}
-
-    const results = db.prepare('SELECT m_nsUsrName, nickname FROM GroupContact').all() as {
-      m_nsUsrName: string
-      nickname: string
-    }[]
-    db.close()
-
-    const groupContacts: Record<string, string> = {}
-    for (const row of results) {
-      if (row.m_nsUsrName && row.nickname) {
-        const md5 = this.md5(row.m_nsUsrName)
-        groupContacts[md5] = row.nickname
-      }
-    }
-    return groupContacts
-  }
-
   public getAllGroupMembers(): Record<string, string> {
-    if (this.wcdb4Client) {
     const members: Record<string, string> = {}
     for (const session of this.wcdb4Client.getSessions()) {
       if (!session.username.endsWith('@chatroom')) continue
@@ -276,30 +87,7 @@ export class WechatDb {
     return members
   }
 
-    if (!this.correctUserId) return {}
-    const dbPath = path.join(WechatDb.WECHAT_DIR, this.correctUserId, 'Group/group_new.db')
-    const db = this.connectDb(dbPath)
-    if (!db) return {}
-
-    // 查询 GroupMember 表
-    const results = db.prepare('SELECT m_nsUsrName, nickname FROM GroupMember').all() as {
-      m_nsUsrName: string
-      nickname: string
-    }[]
-    db.close()
-
-    const groupMembers: Record<string, string> = {}
-    for (const row of results) {
-      if (row.m_nsUsrName && row.nickname) {
-        // 将 wxid (m_nsUsrName) 映射到昵称
-        groupMembers[row.m_nsUsrName] = row.nickname
-      }
-    }
-    return groupMembers
-  }
-
   public getGroupMembersForChat(userMd5: string): Record<string, string> {
-    if (this.wcdb4Client) {
     const username = this.chatMd5ToUsername.get(userMd5)
     if (!username || !username.endsWith('@chatroom')) return {}
 
@@ -312,11 +100,8 @@ export class WechatDb {
     return members
   }
 
-    return this.getAllGroupMembers()
-  }
-
   public getGroupMember(wxid: string, chatroomId?: string): GroupMemberInfo | null {
-    if (this.wcdb4Client && chatroomId) {
+    if (!chatroomId) return null
     return (
       this.wcdb4Client
         .getGroupMembers(chatroomId)
@@ -324,53 +109,23 @@ export class WechatDb {
     )
   }
 
-    if (!this.correctUserId) return null
-
-    // 检查缓存
-    if (this.groupMemberCache.has(wxid)) {
-      return this.groupMemberCache.get(wxid) || null
-    }
-
-    const dbPath = path.join(WechatDb.WECHAT_DIR, this.correctUserId, 'Group/group_new.db')
-    const db = this.connectDb(dbPath)
-    if (!db) {
-      this.groupMemberCache.set(wxid, null)
-      return null
-    }
-
-    const result = db
-      .prepare(
-        'SELECT m_nsUsrName, nickname, m_nsHeadImgUrl FROM GroupMember WHERE m_nsUsrName = ?'
-      )
-      .get(wxid) as GroupMemberInfo
-
-    db.close()
-
-    // 写入缓存
-    this.groupMemberCache.set(wxid, result || null)
-
-    return result || null
-  }
-
   public getAllChatTables(): { name: string; db_number: string }[] {
-    return this.chatDb || []
+    return this.wcdb4Client.getChatTables()
   }
 
   public getMyAvatarUrl(): string | undefined {
-    return this.wcdb4Client?.getMyAvatarUrl()
+    return this.wcdb4Client.getMyAvatarUrl()
   }
 
-  public getWcdb4Client(): Wcdb4Client | null {
+  public getWcdb4Client(): Wcdb4Client {
     return this.wcdb4Client
   }
 
   public close(): void {
-    this.wcdb4Client?.close()
+    this.wcdb4Client.close()
-    this.wcdb4Client = null
   }
 
   public getUserMessages(userMd5: string, startTime?: number, endTime?: number): WechatMessage[] {
-    if (this.wcdb4Client) {
     const username = this.chatMd5ToUsername.get(userMd5)
     if (!username) return []
     return this.wcdb4Client.getMessages(username, startTime, endTime).map((message) => ({
@@ -379,57 +134,7 @@ export class WechatDb {
     }))
   }
 
-    if (!this.chatDb || !this.correctUserId) return []
-
-    const tableName = `Chat_${userMd5}`
-    const tableInfo = this.chatDb.find((t) => t.name === tableName)
-
-    if (!tableInfo) {
-      console.error(`No table found for ${tableName}`)
-      return []
-    }
-
-    const dbPath = path.join(
-      WechatDb.WECHAT_DIR,
-      this.correctUserId,
-      'Message',
-      tableInfo.db_number
-    )
-    const db = this.connectDb(dbPath)
-    if (!db) return []
-
-    try {
-      let query = `SELECT * FROM ${tableName}`
-      const conditions: string[] = []
-
-      // console.log(startTime, endTime, 'time range')
-
-      if (startTime) {
-        conditions.push(`msgCreateTime >= ${startTime}`)
-      }
-      if (endTime) {
-        conditions.push(`msgCreateTime <= ${endTime}`)
-      }
-
-      if (conditions.length > 0) {
-        query += ` WHERE ${conditions.join(' AND ')}`
-      }
-
-      // 添加排序以确保存储正确的顺序
-      query += ` ORDER BY msgCreateTime ASC`
-
-      const results = db.prepare(query).all() as unknown as WechatMessage[]
-      db.close()
-      return results
-    } catch (e) {
-      console.error(`Error querying messages for ${tableName}:`, e)
-      db.close()
-      return []
-    }
-  }
-
   public searchAllMessages(keyword: string): string | null {
-    if (this.wcdb4Client) {
     const lowerKeyword = keyword.trim().toLowerCase()
     if (!lowerKeyword) return null
     for (const session of this.wcdb4Client.getSessions()) {
@@ -441,41 +146,7 @@ export class WechatDb {
     return null
   }
 
-    if (!this.correctUserId) return null
-
-    for (let i = 0; i < 10; i++) {
-      const dbName = `msg_${i}.db`
-      const dbPath = path.join(WechatDb.WECHAT_DIR, this.correctUserId, 'Message', dbName)
-      if (!fs.existsSync(dbPath)) continue
-
-      const db = this.connectDb(dbPath)
-      if (!db) continue
-
-      const tables = db
-        .prepare("SELECT name FROM sqlite_master WHERE type='table' AND name LIKE 'Chat_%'")
-        .all() as { name: string }[]
-      for (const table of tables) {
-        try {
-          // 首先检查 msgContent 列是否存在以避免错误？
-          // 或者像 Swift 代码中那样使用 try/catch "抑制错误"
-          const results = db
-            .prepare(`SELECT 1 FROM ${table.name} WHERE msgContent LIKE '%${keyword}%' LIMIT 1`)
-            .get()
-          if (results) {
-            console.log(`Found keyword in ${table.name} (${dbName})`)
-            db.close()
-            return table.name
-          }
-        } catch {
-          // 忽略没有 msgContent 的表
-        }
-      }
-      db.close()
-    }
-    return null
-  }
-
   public md5(str: string): string {
-    return crypto.createHash('md5').update(str).digest('hex')
+    return this.wcdb4Client.md5(str)
   }
 }