# Project Qingtian / FRO # FRO Share File — Daily Development & Discussion Record **Date:** 2026-09-08 **Project:** Project Qingtian / FRO (RemoteOffice) **Feature:** FRO Share File **Status:** Core Alpha Function Successful **Next Session:** 2026-09-09 --- ## 1. Today's Objective Continued development and testing of FRO Share File. Target workflow: QNAP Share File → FRO Share Target Browser → Select Folder/File → Select Expiry → Optional Recipient Information → Generate Share Link → Recipient opens public link → Browse shared content → Download. --- ## 2. Final Share File Design 1. Admin Unlock 2. Browse QNAP Share File 3. Select folder or individual file 4. Select expiry: 24h / 3d / 7d 5. Optional recipient name/email metadata 6. Create Share Link 7. FRO generates a unique token 8. Recipient opens the public link 9. Access is limited to the token's target 10. Access expires automatically 11. Read-only access 12. Public recipient does not need Admin Login 13. Public recipient does not need Tailscale 14. Public recipient does not need a FRO application The unique token is the access credential. --- ## 3. OTP / Email Decision Email OTP / Yahoo SMTP was removed from the intended workflow. Final decision: - No Email OTP - No Yahoo SMTP - No SMTP configuration - No OTP verification The Share Link token itself provides access. For backward compatibility, `otp_enabled: false` may remain in token records for now. --- ## 4. QNAP Integration The FRO container accesses the QNAP Share File directory through a read-only Docker mount: /mnt/qnap-survey/Share File:/share-file:ro FRO sees the root as: /share-file The Share File root is configurable through `REMOTE_OFFICE_SHARE_FILE_ROOT`. --- ## 5. Admin Authentication Share File administration requires authentication. Current mechanism: - HTTP Bearer token - Short-lived FRO Share Admin session cookie - Session lifetime: 8 hours - Current HTTP deployment intentionally uses a non-secure cookie because HTTPS is not yet used Session cookie: fro_share_admin_session Testing: - Unauthenticated `GET /filedrop/share-targets` → 401 - Admin authentication `POST /filedrop/share/auth` → 200 - Authenticated Share Target Browser → 200 --- ## 6. Share Target Browser Implemented and tested successfully. Endpoint: GET /filedrop/share-targets Functions: - Display folders - Display files - Navigate folders - Return to parent folders - Select folder - Select individual file - Display selected target Tested QNAP structure: Share File └── RMC_2026 └── dji └── CV_DJI_Video1.mp4 The UI successfully displayed and navigated the QNAP contents. Individual file selection was successfully tested: RMC_2026/dji/CV_DJI_Video1.mp4 --- ## 7. Share Link Creation Endpoint: POST /filedrop/share/create Supported expiry: - 24 hours - 72 hours / 3 days - 168 hours / 7 days The endpoint validates: - Share File availability - Target path - Target type - Target existence - Folder/file type - Expiry period A unique token is generated for every share. Token records are stored in: /data/filedrop/share_tokens.json --- ## 8. Target-Bound Security A Share Token is restricted to the target selected when the link is created. Example: RMC_2026/104_FUJI cannot access: RMC_2026/105_FUJI Traversal attempts such as: ../105_FUJI are rejected. Expected result: 403 Access denied Target-bound security was successfully tested. --- ## 9. Folder Target and File Target The system supports: folder file ### Folder Target The recipient can browse the shared folder and download permitted files within that target. ### File Target The recipient sees the individual shared file. The public listing logic was corrected so a file target is not incorrectly treated as a folder. --- ## 10. File Target Public Listing Fix Initial behavior: Unable to load shared files. Server result: 404 Folder not found Cause: The public listing logic treated an individual file target as a folder. Fix: File targets now return a single file record. Tested file: CV_DJI_Video1.mp4 Size: 69,568,067 bytes The public page now displays the file correctly. --- ## 11. File Target Download Fix After the listing fix, the file appeared correctly but the browser initially returned 403 on download. The backend download handling was corrected specifically for file targets. The corrected logic: - Validates the token - Validates the token target - Confirms file target - Confirms requested filename matches the target - Rejects access outside the target - Returns the file through `FileResponse` Direct application test: HTTP 200 Content-Type: video/mp4 Content-Length: 69,568,067 bytes Content-Disposition: attachment The complete file body was successfully returned. --- ## 12. Live Server Verification The FRO container was restarted after the fix. Container: remoteoffice Status: Up Live server testing from inside the container returned: HTTP 200 Host-to-FRO testing also returned: HOST DOWNLOAD HTTP = 200 This confirmed the live backend and network path were working. --- ## 13. Actual Chrome Download Test The initial Chrome Incognito test showed a temporary 403 despite server-side tests returning 200. A new Chrome Incognito window was opened and the Share Link was reopened. The Download button was clicked successfully. Windows Save As appeared. Filename: CV_DJI_Video1.mp4 File type: MP4 This confirms the actual browser download workflow works. --- ## 14. Final End-to-End Result The complete workflow was successfully demonstrated: QNAP Share File ↓ FRO Share Target Browser ↓ Select target ↓ Select expiry ↓ Create Share Link ↓ Public Share Link ↓ Chrome Incognito ↓ No Admin Login required ↓ File displayed ↓ Download ↓ Windows Save As ↓ CV_DJI_Video1.mp4 ### Result # FRO Share File Core Function = SUCCESSFUL --- ## 15. Current Function Status | Function | Status | |---|---| | Admin Unlock | COMPLETE | | Admin authentication | COMPLETE | | QNAP Share File connection | COMPLETE | | Share Target Browser | COMPLETE | | Folder browsing | COMPLETE | | File browsing | COMPLETE | | Folder selection | COMPLETE | | File selection | COMPLETE | | Expiry selection | COMPLETE | | 24-hour expiry | COMPLETE | | 3-day expiry | COMPLETE | | 7-day expiry | COMPLETE | | Recipient name metadata | COMPLETE | | Recipient email metadata | COMPLETE | | Unique share token | COMPLETE | | Public Share Link | COMPLETE | | Public access without Admin Login | COMPLETE | | Read-only access | COMPLETE | | Target-bound security | TESTED / COMPLETE | | Folder sharing | COMPLETE | | Individual file sharing | COMPLETE | | Public file listing | COMPLETE | | Individual file download | COMPLETE | | Actual Chrome download | COMPLETE | | Windows Save As verification | COMPLETE | --- ## 16. Current Security Model Admin Authentication ↓ Select QNAP Target ↓ Generate Unique Token ↓ Token bound to Target ↓ Token has Expiry ↓ Public Recipient Access ↓ Read-only ↓ Access denied outside Target ↓ Token expires automatically The recipient does not receive general QNAP access. The recipient only receives access to the target represented by the Share Token. --- ## 17. Large File Download — Important Future Work Normal downloading is working. HTTP resumable downloading has NOT yet been implemented. Current behavior: Large File ↓ Download ↓ Connection breaks ↓ Browser may need to restart Desired behavior: Large File ↓ Download ↓ Connection breaks ↓ Connection restored ↓ Browser requests remaining bytes ↓ Download continues ### Decision Implement: # HTTP Range Requests / Resumable Download Do NOT physically split the original QNAP file. The original file should remain intact. --- ## 18. Physical File Splitting — Rejected We discussed splitting a large file into pieces such as: file.part01 file.part02 file.part03 This is NOT the preferred design. Reasons: - More complicated for recipients - Requires combining pieces - Creates additional temporary files - Less user-friendly - Original QNAP files should remain unchanged Preferred: Original File ↓ HTTP Range Download ↓ Resume after interruption The recipient should still see one normal file. --- ## 19. Whole Folder Download When a whole folder is shared, the desired experience is to provide both: ### Individual Download Recipient can download files one by one. ### Download All Recipient can click: Download All FRO should create/download a ZIP containing the permitted contents of the shared folder. This is preferable when the folder contains many files. --- ## 20. Whole Folder ZIP Status The Download All concept exists in the Share File UI. However: # Actual ZIP download has NOT yet been fully verified end-to-end. Tomorrow this should be tested: 1. Share a folder 2. Open the public Share Link 3. Click Download All 4. Confirm ZIP download starts 5. Open ZIP 6. Confirm correct files are included 7. Confirm files outside the token target are NOT included 8. Confirm folder structure is correct --- ## 21. Additional Future Security Tests Before production-ready status, test: ### Expiry Verify expired tokens cannot access files. ### Path Traversal Test: ../ ../../ ../other-folder Expected: 403 Access denied ### Target Boundary A folder token must not access: - Parent folder - Sibling folder - Unrelated folder ### File Target A file token must not download: - Another file - Another directory - Another target ### Invalid Token Expected: 404 Invalid or expired share link ### Expired Token Expected: 404 Invalid or expired share link --- ## 22. Configuration Recovery / Cleanup During OTP/SMTP cleanup, an earlier edit accidentally damaged `app/config.py`. The configuration file was restored from Git baseline and the Share File configuration was reinserted. Syntax validation succeeded: python3 -m py_compile app/config.py app/filedrop.py There is also an existing log message: NameError: name 'load_tokens' is not defined This appears related to older FileDrop code and is not currently preventing Share File functionality. It should be investigated separately. --- ## 23. Milestone # FRO Share File — Alpha Core Complete As of 2026-09-08: The core Share File workflow is operational and has passed actual browser testing. Most important confirmation: Recipient opens Share Link ↓ File appears ↓ Recipient clicks Download ↓ Browser opens Save As ↓ File can be saved Therefore: # SUCCESSFUL — CORE FUNCTION This means the core intended workflow is functioning. It does NOT mean every enhancement is complete. --- ## 24. Tomorrow — 2026-09-09 ### Priority 1 # Implement HTTP Range / Resumable Download Requirements: - Keep original files on QNAP - Do not physically split files - Support HTTP Range requests - Allow interrupted downloads to continue - Maintain token validation - Maintain target-bound security - Maintain expiry checking - Maintain read-only access Test: 1. Normal download 2. Partial/range request 3. Resumed download 4. Token security 5. Expired token behavior ### Priority 2 # Test Download All Folder: Share Folder ↓ Download All ↓ ZIP ↓ Verify contents ### Priority 3 UI polishing and remaining Share File cleanup. --- ## 25. Session Stop Point Today's working download implementation should be treated as a stable checkpoint. Do not modify the working core unnecessarily. Tomorrow continue from: FRO Share File ↓ HTTP Range / Resume Download --- # FINAL STATUS **Date:** 2026-09-08 **FRO Share File Core:** SUCCESSFUL **Actual browser download:** CONFIRMED **Target-bound security:** TESTED **OTP/SMTP:** Removed from intended workflow **HTTP Resume:** Not implemented yet **Whole Folder ZIP:** Needs end-to-end verification **Production hardening:** Future work # END OF RECORD