# C-1 Verification Report **Date:** 2026-03-29 **Branch:** culurien --- ## PART 1: BUILD & TEST ### Builds - **Linux AMD64**: PASS (all C-1 packages compile cleanly; pre-existing migration/pathutils error unrelated) - **Linux ARM64**: PASS (same) - **Windows AMD64**: PASS (docker-compose cross-compiles successfully) ### Test Counts - Scanner: 19 tests, 19 PASS - Agent internal: 4 tests, 4 PASS - Agent crypto: 14 tests, 14 PASS - Agent circuitbreaker: 3 tests, 3 PASS - Server: 59 tests, 58 PASS + 1 SKIP - **Total: 99 tests, 98 PASS, 1 SKIP, 0 FAIL** Previous B-2 baseline: 77 tests. C-1 adds 19 scanner tests + 3 circuitbreaker = 22 new. ### State-Change Confirmation All 8 FAIL-NOW tests flipped to PASS. All 11 PASS-NOW tests updated correctly. --- ## PART 2: POLLING LOOP PARITY (F-C1-5) — PASS - Proportional jitter: `maxJitter = pollingInterval / 2`, capped at 30s — present at lines 179-186 - Exponential backoff: `calculateBackoff()` at line 623-635, base=10s, cap=5min - `consecutiveFailures` counter: incremented on error (lines 244, 257, 264), reset on success (line 271) - Log format: `[WARNING] [agent] [service] server_unavailable attempt=%d` — ETHOS compliant - TODO comment for deduplication: present at line 165 ### Remaining Gaps The Windows service runAgent() does NOT have: - `ShouldRefreshKey` / `RefreshPrimaryKey` cycle (A-1) - `CleanupExecutedIDs` (B-2 F-B2-2) These are in main.go's polling loop but absent from service/windows.go. The impact is LOW — key refresh is needed only every 6 hours and is handled by the key cache fallback. Command dedup cleanup runs every 6 hours and is non-critical. Documented as future deduplication work. --- ## PART 3: WINGET PATH DETECTION (F-C1-1) — PASS - Lookup order: 1) `exec.LookPath`, 2) `C:\Windows\System32\winget.exe`, 3) `filepath.Glob` for WindowsApps - Linux safety: `filepath.Glob` with Windows paths returns nil on Linux, `os.Stat` returns error — both graceful - Not-found: returns `fmt.Errorf`, caller logs and skips — no panic - Log: `[INFO] [agent] [scanner] winget_found_at path=%q` and `winget_not_found` --- ## PART 4: GHOST UPDATES (F-C1-3) — PASS (partial fix) - `RebootRequired = true` set on InstallResult post-install (line 107) - Log: `[INFO] [agent] [installer] windows_update_installed packages=%v reboot_required=%v` - RebootRequired field added to InstallResult struct with JSON tag **WARNING: Detection only, not full prevention.** The `RebootRequired` flag is set on the InstallResult and reported to the server, but the scanner does NOT filter out recently-installed updates. The next scan will still return the update as available until Windows commits the install state. This is a partial fix — the server/dashboard can use the flag to show "reboot required" status, but the ghost update will still appear in scan results. Full prevention would require scanner-side filtering (checking recently installed update IDs against current scan results). Documented as DEV-031. --- ## PART 5: WINGET TEXT PARSER (F-C1-2) — PASS - Uses header line keyword positions (Name, Id, Version, Available) to determine column starts - Falls back to simple parser if header not found - Lines shorter than expected: handled by bounds checking - Package names with spaces: preserved by position-based extraction --- ## PART 6: LOGGING FORMAT — PASS - `fmt.Printf`: zero results in winget.go - Emojis: zero results in service/windows.go - Banned words: zero results across all modified files --- ## PART 7: EDGE CASES - **Winget not installed**: returns error → empty update list → no crash - **Old winget (pre-1.6)**: JSON fails → text fallback → column parser handles output - **Long-running install**: install is synchronous; agent blocks during install, resumes polling after - **RebootRequired persistence**: in-memory only on InstallResult. On restart, flag is lost. Ghost may reappear until Windows commits. Known limitation (DEV-031). --- ## PART 8: ETHOS COMPLIANCE - [x] Winget not found logged - [x] Reboot required logged - [x] Backoff in service logged with ETHOS format - [x] No emojis in modified files - [x] No fmt.Printf in scanner - [x] Graceful degradation on all failure paths - [x] No banned words --- ## PART 9: PRE-INTEGRATION CHECKLIST - [x] Linux AMD64 build passes - [x] Linux ARM64 build passes - [x] Windows AMD64 cross-compile passes - [x] All 98 tests pass, 1 skip (pre-existing) - [x] All 8 C-1 FAIL-NOW tests now PASS - [x] B-2 jitter and backoff in Windows service - [x] Remaining gaps documented (key refresh, dedup cleanup) - [x] Winget searches known system locations - [x] Ghost update: RebootRequired set (detection, not prevention) - [x] Ghost update partial fix documented as DEV-031 - [x] Text parser handles spaces - [x] fmt.Printf removed - [x] Emojis removed - [x] All edge cases documented - [x] Deviations documented --- ## ISSUES FOUND | # | Severity | Finding | Action | |---|----------|---------|--------| | 1 | LOW | Ghost update fix is detection-only, not prevention | DEV-031 | | 2 | LOW | Service missing ShouldRefreshKey/CleanupExecutedIDs | Future deduplication | --- ## FINAL STATUS: VERIFIED (with 2 documented follow-ups) All C-1 fixes structurally correct. Linux builds clean. No regressions. Ghost update fix is partial (detection, not prevention) — documented.