From 139503944bd3a084769999d39ed4c69437ba15a2 Mon Sep 17 00:00:00 2001 From: Kawa Date: Fri, 10 Apr 2026 11:26:44 +0200 Subject: [PATCH] docs(01-03): complete .intunewin builder plan - Add 01-03-SUMMARY.md with byte-level format validation results - Update STATE.md: progress 33%, decisions recorded, session updated - Update ROADMAP.md: phase 1 in progress (1/3 summaries) - Mark INFRA-02 complete in REQUIREMENTS.md --- .planning/REQUIREMENTS.md | 4 +- .planning/ROADMAP.md | 2 +- .planning/STATE.md | 17 +-- .../phases/01-foundation/01-03-SUMMARY.md | 118 ++++++++++++++++++ 4 files changed, 131 insertions(+), 10 deletions(-) create mode 100644 .planning/phases/01-foundation/01-03-SUMMARY.md diff --git a/.planning/REQUIREMENTS.md b/.planning/REQUIREMENTS.md index e43c335..c1d89e2 100644 --- a/.planning/REQUIREMENTS.md +++ b/.planning/REQUIREMENTS.md @@ -47,7 +47,7 @@ Requirements for initial release. Each maps to roadmap phases. ### Infrastructure - [ ] **INFRA-01**: Application runs as a single Docker container -- [ ] **INFRA-02**: Application has minimal runtime dependencies (no Node.js, no external DB) +- [x] **INFRA-02**: Application has minimal runtime dependencies (no Node.js, no external DB) ## v2 Requirements @@ -84,7 +84,7 @@ Which phases cover which requirements. Updated during roadmap creation. | Requirement | Phase | Status | |-------------|-------|--------| | INFRA-01 | Phase 1 | Pending | -| INFRA-02 | Phase 1 | Pending | +| INFRA-02 | Phase 1 | Complete | | DRV-01 | Phase 2 | Pending | | DRV-02 | Phase 2 | Pending | | DRV-03 | Phase 2 | Pending | diff --git a/.planning/ROADMAP.md b/.planning/ROADMAP.md index 8fa7b3b..f444df7 100644 --- a/.planning/ROADMAP.md +++ b/.planning/ROADMAP.md @@ -108,7 +108,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 | Phase | Plans Complete | Status | Completed | |-------|----------------|--------|-----------| -| 1. Foundation | 0/3 | Not started | - | +| 1. Foundation | 1/3 | In Progress| | | 2. Driver Management | 0/3 | Not started | - | | 3. Printer Configuration | 0/3 | Not started | - | | 4. Script Generation | 0/3 | Not started | - | diff --git a/.planning/STATE.md b/.planning/STATE.md index 1e08a4c..c505037 100644 --- a/.planning/STATE.md +++ b/.planning/STATE.md @@ -3,14 +3,14 @@ gsd_state_version: 1.0 milestone: v1.0 milestone_name: milestone status: planning -stopped_at: Phase 1 context gathered -last_updated: "2026-04-10T08:56:16.637Z" +stopped_at: Completed 01-03-PLAN.md +last_updated: "2026-04-10T09:26:32.100Z" last_activity: 2026-04-10 — Roadmap created, 5 phases derived from 27 requirements progress: total_phases: 5 completed_phases: 0 - total_plans: 0 - completed_plans: 0 + total_plans: 3 + completed_plans: 1 percent: 0 --- @@ -50,6 +50,7 @@ Progress: [░░░░░░░░░░] 0% - Trend: - *Updated after each plan completion* +| Phase 01 P03 | 7 | 1 tasks | 4 files | ## Accumulated Context @@ -60,6 +61,8 @@ Recent decisions affecting current work: - Phase 1: .intunewin reimplemented natively in Python (IntuneWinAppUtil.exe is a Windows PE binary, cannot run in Linux container) - Phase 1: Stack is Python 3.12 + FastAPI + Jinja2 + HTMX + SQLite + pycryptodome +- [Phase 01]: IV is 16 bytes for .intunewin AES-256-CBC (not 32 as documented in STACK.md — corrected from RESEARCH.md) +- [Phase 01]: Inner .intunewin ZIP uses DEFLATE compression; outer ZIP uses STORED (matches C# reference implementation) ### Pending Todos @@ -72,6 +75,6 @@ None yet. ## Session Continuity -Last session: 2026-04-10T08:56:16.634Z -Stopped at: Phase 1 context gathered -Resume file: .planning/phases/01-foundation/01-CONTEXT.md +Last session: 2026-04-10T09:26:23.280Z +Stopped at: Completed 01-03-PLAN.md +Resume file: None diff --git a/.planning/phases/01-foundation/01-03-SUMMARY.md b/.planning/phases/01-foundation/01-03-SUMMARY.md new file mode 100644 index 0000000..2b274cd --- /dev/null +++ b/.planning/phases/01-foundation/01-03-SUMMARY.md @@ -0,0 +1,118 @@ +--- +phase: 01-foundation +plan: "03" +subsystem: infra +tags: [intunewin, pycryptodome, aes-256-cbc, hmac-sha256, python, zipfile] + +# Dependency graph +requires: [] +provides: + - "build_intunewin() function: Python-native .intunewin assembler using pycryptodome" + - "14 byte-level validation tests for .intunewin format compliance" + - "Verified encrypted blob layout: HMAC(32) + IV(16) + AES-256-CBC ciphertext" + - "Detection.xml schema with all 8 EncryptionInfo sub-elements and correct namespace" +affects: + - "05-export (uses build_intunewin directly for Intune package generation)" + +# Tech tracking +tech-stack: + added: + - "pycryptodome 3.20.x — AES-256-CBC encryption and PKCS7 padding" + - "pytest — test runner (already required)" + patterns: + - "TDD: failing tests committed first, then implementation" + - "Encrypted blob layout: HMAC(32) + IV(16) + ciphertext (AES-256-CBC)" + - "Inner ZIP uses DEFLATE; outer ZIP uses STORED (no double-compression of encrypted content)" + - "All crypto values in Detection.xml use standard base64 encoding" + +key-files: + created: + - "imptune/generators/intunewin_builder.py" + - "imptune/generators/__init__.py" + - "tests/test_intunewin.py" + - "tests/__init__.py" + modified: [] + +key-decisions: + - "IV is 16 bytes (not 32) — corrected from STACK.md documentation error; aligns with AES standard and svrooij.io verification" + - "MacKey is 32 bytes — same size as EncryptionKey, consistent with SvRooij.ContentPrep behavior" + - "Inner ZIP uses DEFLATE compression (matches C# reference implementation .NET default)" + - "Real Intune upload validation deferred to Phase 5 gate — local byte-level tests are necessary but not sufficient" + +patterns-established: + - "Pattern: .intunewin encrypted blob = HMAC-SHA256(32) + IV(16) + AES-256-CBC-ciphertext" + - "Pattern: build_intunewin(source_dir, setup_file, output_path) is the public API" + - "Pattern: All crypto roundtrip tests in test_intunewin.py verify encrypt-then-decrypt recovers original files" + +requirements-completed: + - INFRA-02 + +# Metrics +duration: 7min +completed: 2026-04-10 +--- + +# Phase 1 Plan 03: .intunewin Builder Summary + +**Python-native .intunewin assembler using pycryptodome: AES-256-CBC encryption with HMAC-SHA256, producing the exact 48-byte header + ciphertext blob layout that Intune expects** + +## Performance + +- **Duration:** ~7 min +- **Started:** 2026-04-10T09:23:18Z +- **Completed:** 2026-04-10T09:25:32Z +- **Tasks:** 1 (TDD: RED + GREEN commits) +- **Files modified:** 4 + +## Accomplishments + +- Implemented `build_intunewin(source_dir, setup_file, output_path)` as a standalone Python module requiring no external binary (INFRA-02) +- All 14 byte-level tests pass: outer ZIP structure, Detection.xml schema, IV/key sizes, HMAC-SHA256 verification, AES-256-CBC decryption roundtrip, file digest validation +- Confirmed critical RESEARCH.md correction: IV is 16 bytes (not 32 as incorrectly documented in STACK.md) +- Highest-risk unknown in Phase 1 is now validated at the byte-level; only a real Intune tenant upload remains outstanding + +## Task Commits + +Each task was committed atomically using TDD: + +1. **RED — Failing tests** - `4d455e7` (test) +2. **GREEN — Implementation** - `25f82e6` (feat) + +_TDD spike: failing tests committed first (RED), then implementation to pass (GREEN)._ + +## Files Created/Modified + +- `imptune/generators/intunewin_builder.py` — build_intunewin() function, 111 lines, standalone module with no web framework dependency +- `imptune/generators/__init__.py` — generators package marker +- `tests/test_intunewin.py` — 14 byte-level tests organized into 4 test classes +- `tests/__init__.py` — tests package marker + +## Decisions Made + +- **IV is 16 bytes:** STACK.md stated 32 bytes — this is a documentation error. AES block size is always 16 bytes. pycryptodome raises `ValueError: IV must be 16 bytes long` with 32-byte IV. Implementation uses `os.urandom(16)`. +- **MacKey is 32 bytes:** svrooij articles do not specify exact MacKey size; chose 32 bytes (same as EncryptionKey) consistent with SvRooij.ContentPrep source behavior. +- **Inner ZIP uses DEFLATE:** Matches the C# reference implementation (.NET `ZipArchive` default). The conflicting "no compression" WebSearch result was treated as low-confidence (tertiary source); DEFLATE will be confirmed/corrected in the Phase 5 real Intune upload gate. +- **Real Intune validation deferred:** Pitfall 5 from RESEARCH.md is explicitly acknowledged — local byte-level tests confirm format structure, but the definitive validation requires a real Intune tenant upload in Phase 5. + +## Deviations from Plan + +None - plan executed exactly as written. + +## Issues Encountered + +None — all crypto operations succeeded on first implementation. pycryptodome correctly enforced 16-byte IV constraint (which would have caught the STACK.md documentation error if it had been used with 32 bytes). + +## User Setup Required + +None — no external service configuration required. The `.intunewin` format validation against a real Intune tenant is a manual gate in Phase 5, not a configuration step. + +## Next Phase Readiness + +- `build_intunewin()` is ready for use in Phase 5 (package export) +- Module is standalone — no dependency on FastAPI, SQLite, or any web framework +- Outstanding concern: byte-level format confidence is MEDIUM until a real Intune tenant upload confirms acceptance +- Blocker for Phase 5 only: access to a real Intune tenant for upload testing + +--- +*Phase: 01-foundation* +*Completed: 2026-04-10*