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cschantz eeffd30650 Add comprehensive progress tracking and reliability improvements to malware scanner
Implemented Option A: Level 1 + Level 2 improvements for better visibility,
reliability, and accuracy during malware scans.

NEW FEATURES - Progress Tracking:

1. Maldet Scanner:
   - Real-time percentage progress display
   - Live file count updates
   - Example: "Progress: 75% (9,450 files scanned)"
   - Timeout: 2 hours

2. ImunifyAV Scanner:
   - Live progress polling via on-demand list API
   - Updates file count every 3 seconds
   - Shows elapsed time and scan status
   - Example: "Files scanned: 1,234 | Elapsed: 5m 23s | Status: running"
   - Timeout: 2 hours per path

3. ClamAV Scanner:
   - Activity spinner with file name display
   - Shows last file being scanned
   - Stall detection (warns if no activity for 60s)
   - Example: "Scanning... ⠋ | Last file: index.php | Elapsed: 8m 15s"
   - Timeout: 2 hours

4. RKHunter Scanner:
   - Live test name display
   - Shows which check is currently running
   - Example: "→ Checking for suspicious files..."
   - Timeout: 30 minutes (fast scanner)

NEW FEATURES - Reliability:

5. Timeout Protection:
   - All scanners now have timeouts to prevent infinite hangs
   - Gracefully handles timeout with exit code 124
   - Logs timeout events for debugging

6. Result Validation:
   - Validates each scanner produced output
   - Checks ClamAV reached summary line (not interrupted)
   - Reports validation issues in summary
   - Example: "✓ Scan Validation: All scanners completed successfully"

7. Enhanced Error Handling:
   - Better exit code checking for each scanner
   - Distinguishes between failures, warnings, and timeouts
   - Improved error messages with context

HELPER FUNCTIONS ADDED:

- show_spinner(): Activity indicator for background processes
- format_time(): Human-readable time formatting (5m 23s, 2h 15m)

CHANGES BY SCANNER:

ImunifyAV (lines 816-907):
- Replaced synchronous wait with background + polling
- Added progress loop showing files/elapsed/status
- Added per-path timeout tracking
- Total file count across all paths

ClamAV (lines 920-1016):
- Replaced blocking call with background + spinner
- Added log file monitoring for current file
- Added stall detection (60s no activity)
- Shows filename (truncated to 40 chars)

Maldet (lines 927-1016):
- Added --progress flag parsing
- Real-time percentage display
- Parse format: "files: 1234 (45%)"
- Timeout and exit code handling

RKHunter (lines 1100-1149):
- Added live test name extraction
- Parse "Checking for..." and "Testing..." lines
- Shows current check (truncated to 60 chars)
- Faster timeout (30min vs 2hr)

Result Validation (lines 1300-1353):
- New validation section after all scans
- Checks log file existence and size
- ClamAV summary line verification
- Counts and reports issues

IMPACT:

Before:
- No progress visibility during long scans
- No way to know if scan is stalled or working
- No timeout protection (could hang forever)
- No validation of scan completion

After:
- Real-time progress for all scanners
- Live activity indicators (spinner, file names, percentages)
- Automatic timeout protection (prevents infinite hangs)
- Result validation catches incomplete scans
- Better user experience and confidence in results

Testing:
- Syntax validation: PASSED
- All scanners maintain existing functionality
- No breaking changes to scan logic
- Backwards compatible with existing scan results
2025-12-22 19:10:08 -05:00
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