diff --git a/.planning/ROADMAP.md b/.planning/ROADMAP.md index dc0a663..c3931a3 100644 --- a/.planning/ROADMAP.md +++ b/.planning/ROADMAP.md @@ -16,7 +16,7 @@ Decimal phases appear between their surrounding integers in numeric order. - [x] **Phase 2: Core Archiver** - Rust CLI that compresses, encrypts, and packs files into the custom format (completed 2026-02-24) - [x] **Phase 3: Round-Trip Verification** - Rust unpack command + golden test vectors + unit tests proving byte-identical round-trips (completed 2026-02-24) - [x] **Phase 4: Kotlin Decoder** - Android 13 decoder using javax.crypto and java.util.zip (primary extraction path) (completed 2026-02-25) -- [ ] **Phase 5: Shell Decoder** - Busybox shell script decoder using dd/xxd/openssl/gunzip (fallback extraction) +- [x] **Phase 5: Shell Decoder** - Busybox shell script decoder using dd/xxd/openssl/gunzip (fallback extraction) (completed 2026-02-25) - [ ] **Phase 6: Obfuscation Hardening** - XOR-obfuscated headers, encrypted file table, decoy padding to defeat casual analysis ## Phase Details @@ -91,8 +91,8 @@ Plans: **Plans**: 2 plans Plans: -- [ ] 05-01-PLAN.md -- Shell decode.sh: busybox-compatible decoder with full pipeline (dd/xxd/openssl/gunzip) -- [ ] 05-02-PLAN.md -- Cross-validation test script and end-to-end verification (6 test cases) +- [x] 05-01-PLAN.md -- Shell decode.sh: busybox-compatible decoder with full pipeline (dd/xxd/openssl/gunzip) +- [x] 05-02-PLAN.md -- Cross-validation test script and end-to-end verification (6 test cases) ### Phase 6: Obfuscation Hardening **Goal**: Archive format resists casual analysis -- binwalk, file, strings, and hex editors reveal nothing useful @@ -119,5 +119,5 @@ Phases execute in numeric order: 1 -> 2 -> 3 -> 4 -> 5 -> 6 | 2. Core Archiver | 2/2 | Complete | 2026-02-24 | | 3. Round-Trip Verification | 2/2 | Complete | 2026-02-24 | | 4. Kotlin Decoder | 1/1 | Complete | 2026-02-24 | -| 5. Shell Decoder | 0/2 | Not started | - | +| 5. Shell Decoder | 2/2 | Complete | 2026-02-25 | | 6. Obfuscation Hardening | 0/1 | Not started | - | diff --git a/.planning/STATE.md b/.planning/STATE.md index eb91f55..6174e29 100644 --- a/.planning/STATE.md +++ b/.planning/STATE.md @@ -5,22 +5,22 @@ See: .planning/PROJECT.md (updated 2026-02-24) **Core value:** Archive impossible to unpack without knowing the format -- standard tools (7z, tar, unzip, binwalk) cannot recognize or extract contents -**Current focus:** Phase 5 in progress (Shell Decoder) +**Current focus:** Phase 5 complete (Shell Decoder). Ready for Phase 6. ## Current Position -Phase: 5 of 6 (Shell Decoder) -Plan: 1 of 2 in current phase -Status: Plan 1 complete, Plan 2 (cross-validation tests) remaining -Last activity: 2026-02-25 -- Busybox-compatible shell decoder script (shell/decode.sh) +Phase: 5 of 6 (Shell Decoder) -- COMPLETE +Plan: 2 of 2 in current phase (all done) +Status: Phase 5 complete -- both decoder and cross-validation tests done +Last activity: 2026-02-25 -- Cross-validation tests for shell decoder (shell/test_decoder.sh) -Progress: [███████░░░] 70% +Progress: [████████░░] 80% ## Performance Metrics **Velocity:** -- Total plans completed: 7 -- Average duration: 4.1 min +- Total plans completed: 8 +- Average duration: 3.9 min - Total execution time: 0.5 hours **By Phase:** @@ -31,10 +31,10 @@ Progress: [███████░░░] 70% | 2. Core Archiver | 2/2 | 6 min | 3 min | | 3. Round-Trip Verification | 2/2 | 8 min | 4 min | | 4. Kotlin Decoder | 1/1 | 4 min | 4 min | -| 5. Shell Decoder | 1/2 | 3 min | 3 min | +| 5. Shell Decoder | 2/2 | 5 min | 2.5 min | **Recent Trend:** -- Last 5 plans: 2min, 3min, 5min, 4min, 3min +- Last 5 plans: 3min, 5min, 4min, 3min, 2min - Trend: stable *Updated after each plan completion* @@ -72,6 +72,8 @@ Recent decisions affecting current work: - Phase 5: Graceful HMAC degradation when openssl lacks -mac support - Phase 5: Extract ciphertext to temp file before decryption (avoids pipe buffering issues) - Phase 5: LC_ALL=C for predictable byte handling across locales +- Phase 5: All 6 cross-validation tests passed on first run -- decode.sh was correct as written +- Phase 5: Used sh (not bash) to invoke decode.sh in tests for POSIX compatibility validation ### Pending Todos @@ -86,5 +88,5 @@ None yet. ## Session Continuity Last session: 2026-02-25 -Stopped at: Completed 05-01-PLAN.md (Shell decoder script; Phase 5 Plan 1 of 2) +Stopped at: Completed 05-02-PLAN.md (Shell decoder cross-validation tests; Phase 5 complete) Resume file: None diff --git a/.planning/phases/05-shell-decoder/05-02-SUMMARY.md b/.planning/phases/05-shell-decoder/05-02-SUMMARY.md new file mode 100644 index 0000000..d4d13ab --- /dev/null +++ b/.planning/phases/05-shell-decoder/05-02-SUMMARY.md @@ -0,0 +1,105 @@ +--- +phase: 05-shell-decoder +plan: 02 +subsystem: shell-decoder +tags: [posix-sh, cross-validation, sha256, test-script, busybox, cyrillic] + +# Dependency graph +requires: + - phase: 05-shell-decoder + plan: 01 + provides: "shell/decode.sh -- busybox-compatible POSIX shell decoder" + - phase: 02-core-archiver + provides: "Rust archiver CLI for creating test archives" +provides: + - "shell/test_decoder.sh -- cross-validation test script (6 tests, Rust pack -> Shell decode -> SHA-256 verify)" + - "Validated shell decoder correctness across all edge cases: text, binary, no-compress, empty, large, Cyrillic filenames" +affects: [06-obfuscation] + +# Tech tracking +tech-stack: + added: [bash-test-framework] + patterns: [cross-validation-testing, rust-pack-shell-decode-sha256-verify] + +key-files: + created: + - shell/test_decoder.sh + +key-decisions: + - "All 6 tests passed on first run -- no decode.sh fixes needed" + - "Used sh (not bash) to invoke decode.sh in tests for POSIX compatibility validation" + - "Followed kotlin/test_decoder.sh pattern for consistency across decoder test suites" + +patterns-established: + - "Cross-validation test pattern: Rust pack -> decoder unpack -> SHA-256 comparison (reusable for any decoder)" + - "Test script structure: prerequisites -> build -> test cases -> summary with pass/fail counts" + +requirements-completed: [SHL-01, SHL-02, SHL-03] + +# Metrics +duration: 2min +completed: 2026-02-25 +--- + +# Phase 5 Plan 2: Shell Decoder Cross-Validation Tests Summary + +**Cross-validation test script with 6 test cases (single file, multiple files, no-compress, empty, large 100KB, Cyrillic filename) all passing on first run via Rust pack -> sh decode.sh -> SHA-256 verify** + +## Performance + +- **Duration:** 2 min +- **Started:** 2026-02-24T22:42:47Z +- **Completed:** 2026-02-24T22:44:38Z +- **Tasks:** 2 +- **Files created:** 1 + +## Accomplishments +- Created comprehensive cross-validation test script (275 lines) following kotlin/test_decoder.sh pattern +- All 6 test cases passed on first run with zero decode.sh fixes needed +- Validated SHL-01 (single text file), SHL-02 (no-compress mode), and SHL-03 (Cyrillic UTF-8 filename) +- Verified shell decoder produces byte-identical output to originals via SHA-256 comparison +- Confirmed existing Rust test suite (6 tests) still passes -- no regressions + +## Task Commits + +Each task was committed atomically: + +1. **Task 1: Create shell/test_decoder.sh cross-validation test script** - `e9d7442` (test) +2. **Task 2: Run cross-validation tests and fix any decode.sh issues** - no commit (all tests passed, no fixes needed) + +## Files Created/Modified +- `shell/test_decoder.sh` - Cross-validation test script: 6 test cases covering all edge cases for shell decoder + +## Decisions Made +- All 6 tests passed on first run -- decode.sh implementation from Plan 1 was correct +- Used `sh "$DECODER"` (not `bash`) to invoke decode.sh, ensuring POSIX sh compatibility is tested +- Followed kotlin/test_decoder.sh pattern exactly for consistency across decoder test suites +- 7 total assertions across 6 tests (Test 2 verifies both text.txt and binary.bin) + +## Deviations from Plan + +None - plan executed exactly as written. + +## Issues Encountered +None. + +## User Setup Required +None - no external service configuration required. + +## Next Phase Readiness +- Shell decoder fully validated with cross-validation tests +- Phase 5 (Shell Decoder) is complete: both decode script and test suite done +- Phase 6 (Obfuscation) can extend decode.sh with XOR header deobfuscation and encrypted TOC parsing +- Test script can serve as regression test when obfuscation layer is added + +--- + +## Self-Check: PASSED + +- FOUND: shell/test_decoder.sh +- FOUND: commit e9d7442 +- FOUND: 05-02-SUMMARY.md + +--- +*Phase: 05-shell-decoder* +*Completed: 2026-02-25*