session-notes.py

#!/usr/bin/env python3
"""Generate a DOCX summary of today's TouchBridge development session."""

from docx import Document
from docx.shared import Inches, Pt, RGBColor
from docx.enum.text import WD_ALIGN_PARAGRAPH
from datetime import datetime

doc = Document()

# Title
title = doc.add_heading('TouchBridge — Development Session Notes', level=0)
title.alignment = WD_ALIGN_PARAGRAPH.CENTER

doc.add_paragraph(f'Date: {datetime.now().strftime("%B %d, %Y")}')
doc.add_paragraph('Project: TouchBridge (UnTouchID)')
doc.add_paragraph('Repository: https://github.com/HMAKT99/UnTouchID')
doc.add_paragraph('')

# Session Overview
doc.add_heading('Session Overview', level=1)
doc.add_paragraph(
    'Built TouchBridge end-to-end across multiple sessions — a macOS tool that delegates '
    'Touch ID authentication to a nearby iPhone or iPad. Primary market: Mac Mini users '
    '(M2/M3/M4) who have no Touch ID hardware.'
)

# Phase 0
doc.add_heading('Phase 0 — Core Cryptographic Pipeline', level=1)
items = [
    'ChallengeManager: 32-byte nonce generation via SecRandomCopyBytes, 10-second expiry, replay protection with 60s seen-nonces window, ECDSA P-256 signature verification',
    'KeychainStore: Store/retrieve/list/remove paired device public keys in macOS Keychain with kSecAttrAccessibleWhenUnlockedThisDeviceOnly',
    'SessionCrypto: ECDH P-256 ephemeral key agreement via CryptoKit, HKDF-SHA256 key derivation, AES-256-GCM encrypt/decrypt for BLE channel',
    'WireFormat: MessagePack-style encoding with 256-byte max message size, version byte header, JSON payload',
    'AuditLog: Append-only NDJSON to ~/Library/Logs/TouchBridge/, ISO 8601 timestamps, NEVER logs nonce values',
    'BLEServer: macOS GATT peripheral (CBPeripheralManager) with 4 characteristics — session key, challenge, response, pairing',
    'BLEClient: iOS GATT central (CBCentralManager) with background restoration via CBCentralManagerOptionRestoreIdentifierKey',
    'SecureEnclaveManager: P-256 key generation inside Secure Enclave (kSecAttrTokenIDSecureEnclave), signing, public key export, SigningProvider protocol with MockSigningProvider for testing',
    'LocalAuthManager: LAContext biometric prompt wrapper with @MainActor enforcement',
    'ChallengeHandler: iOS orchestration — decrypt challenge → prompt biometric → sign nonce → encrypt response → send via BLE',
    'PairingManager: QR payload generation (16-byte random token, 5-min expiry), token validation, public key format checks',
    'DaemonCoordinator: Central integration point wiring all components on Mac side',
    'CompanionCoordinator: Central integration point wiring all components on iOS side',
    'CLI test harness: touchbridge-test with pair, challenge, list-devices, config subcommands',
]
for item in items:
    doc.add_paragraph(item, style='List Bullet')

# Phase 1
doc.add_heading('Phase 1 — PAM Module', level=1)
items = [
    'pam_touchbridge.c: C11 PAM module compiled as universal binary (arm64 + x86_64 via lipo). Connects to daemon Unix domain socket, sends JSON auth request, parses response. Socket path resolved via getpwnam() for correct user home directory.',
    'SocketServer: Unix domain socket listener at ~/Library/Application Support/TouchBridge/daemon.sock using POSIX sockets + DispatchSource. PAMRequest/PAMResponse JSON protocol.',
    'DaemonCoordinator.authenticateFromPAM(): CheckedContinuation-based challenge awaiting with task group timeout race.',
    'PolicyEngine: Reads AuthTimeoutSeconds from policy.plist (default 15s).',
    'install.sh: Checks macOS >= 13.0, builds daemon + PAM module, backs up /etc/pam.d/sudo, prompts user before patching, installs LaunchAgent. Fully idempotent.',
    'uninstall.sh: Restores PAM backups, removes binaries, unloads LaunchAgent.',
    'LaunchAgent plist: dev.touchbridge.daemon with RunAtLoad, KeepAlive.',
]
for item in items:
    doc.add_paragraph(item, style='List Bullet')

# Phase 2
doc.add_heading('Phase 2 — Policy Engine', level=1)
items = [
    'Per-action configurable policy: biometric_required vs proximity_session with TTL',
    'Default policies: sudo=biometric, screensaver=proximity(30m), app_store=biometric, system_settings=biometric, browser_autofill=proximity(10m)',
    'ProximitySessionStore: Thread-safe TTL-based session management',
    'touchbridge-test config show/set/reset CLI for policy management',
]
for item in items:
    doc.add_paragraph(item, style='List Bullet')

# Phase 3
doc.add_heading('Phase 3 — Authorization Plugin', level=1)
doc.add_paragraph('macOS Authorization Plugin (Plugin.swift) for system-level auth surfaces — App Store purchases, System Settings privacy changes. Connects to daemon socket using same JSON protocol as PAM module.')

# Phase 4
doc.add_heading('Phase 4 — Browser Extensions', level=1)
items = [
    'Safari App Extension: Manifest V3, background.js for native messaging, content.js for password field monitoring and WebAuthn interception',
    'Chrome Extension: Manifest V3 service worker, same content script behavior',
    'touchbridge-nmh: Native messaging host binary using Chrome NMH protocol (4-byte length prefix + JSON), bridges to daemon socket',
    '"TouchBridge — confirm on iPhone" banner shown on password fields',
]
for item in items:
    doc.add_paragraph(item, style='List Bullet')

# Phase 5
doc.add_heading('Phase 5 — Polish & Documentation', level=1)
items = [
    'README.md with quick start (simulator + iPhone paths)',
    'SECURITY.md with full threat model and cryptographic properties',
    'CHANGELOG.md documenting all phases',
    'Architecture docs with ASCII data flow diagram',
    'Security model, limitations, policy config, and setup guides',
]
for item in items:
    doc.add_paragraph(item, style='List Bullet')

# Companion App
doc.add_heading('Companion iOS App', level=1)
items = [
    'Xcode project generated via XcodeGen (project.yml spec)',
    'Builds successfully on Xcode 26.3 for both simulator and device',
    'Onboarding flow: welcome screen with feature highlights → Get Started → pairing',
    'Tab navigation: Home (status card, stats, reconnect), Activity (auth history), Settings (device info, unpair)',
    'AuthRequestView: full-screen with pulsing Touch ID icon, approve/deny with haptic feedback',
    'Info.plist: NSFaceIDUsageDescription, NSBluetoothAlwaysUsageDescription, UIBackgroundModes bluetooth-central',
    'Bundle ID: dev.touchbridge.companion, deployment target iOS 16.0',
]
for item in items:
    doc.add_paragraph(item, style='List Bullet')

# Simulator Mode
doc.add_heading('Simulator Mode (No iPhone Required)', level=1)
doc.add_paragraph(
    'Added --simulator flag to test the full sudo flow without an iPhone. '
    'Runs the entire PAM → Socket → Challenge → Sign → Verify pipeline locally '
    'using software P-256 keys instead of Secure Enclave.'
)
doc.add_paragraph('Usage:', style='List Bullet')
doc.add_paragraph('  Terminal 1: touchbridged serve --simulator')
doc.add_paragraph('  Terminal 2: sudo echo test → auto-approved')
doc.add_paragraph('')
doc.add_paragraph('Interactive mode: touchbridged serve --interactive → prompts [Y/n] in terminal', style='List Bullet')

# Test Summary
doc.add_heading('Test Summary', level=1)
table = doc.add_table(rows=9, cols=3)
table.style = 'Table Grid'
headers = ['Component', 'Tests', 'Status']
for i, h in enumerate(headers):
    table.rows[0].cells[i].text = h
data = [
    ('ChallengeManager', '10', 'Pass'),
    ('KeychainStore', '8', 'Pass'),
    ('Wire Format + Session Crypto', '15', 'Pass'),
    ('AuditLog', '7', 'Pass'),
    ('PairingManager', '11', 'Pass'),
    ('PolicyEngine', '16', 'Pass'),
    ('SocketServer + PAM Integration', '12', 'Pass'),
    ('E2E + Simulator', '12', 'Pass'),
]
for i, (comp, tests, status) in enumerate(data):
    table.rows[i+1].cells[0].text = comp
    table.rows[i+1].cells[1].text = tests
    table.rows[i+1].cells[2].text = status

doc.add_paragraph('')
doc.add_paragraph('Total: 91 tests (75 daemon + 16 protocol) — all passing')

# PRs
doc.add_heading('Pull Requests', level=1)
prs = [
    ('PR #1', 'Merged', 'Phase 0: iOS crypto + pairing'),
    ('PR #2', 'Merged', 'Phase 0: daemon coordinator + CLI'),
    ('PR #3', 'Merged', 'Phase 1: PAM module + socket server'),
    ('PR #4', 'Merged', 'Phase 1: install scripts + integration tests'),
    ('PR #5', 'Merged', 'E2E wiring + CompanionCoordinator'),
    ('PR #6', 'Merged', 'Phases 2-5: policy, auth plugin, extensions, docs'),
    ('PR #7', 'Merged', 'Xcode project for companion app'),
    ('PR #8', 'Merged', 'Polished companion UI'),
    ('PR #9', 'Merged', 'Fix companion app build — verified Xcode 26.3'),
    ('PR #10', 'Pending', 'Simulator mode — test sudo without iPhone'),
]
table2 = doc.add_table(rows=len(prs)+1, cols=3)
table2.style = 'Table Grid'
for i, h in enumerate(['PR', 'Status', 'Description']):
    table2.rows[0].cells[i].text = h
for i, (pr, status, desc) in enumerate(prs):
    table2.rows[i+1].cells[0].text = pr
    table2.rows[i+1].cells[1].text = status
    table2.rows[i+1].cells[2].text = desc

# Next Steps
doc.add_heading('Next Steps (Tomorrow)', level=1)
doc.add_heading('Step 1: Quick test with simulator (5 min)', level=2)
doc.add_paragraph('1. gh pr merge 10 --merge && git checkout main && git pull')
doc.add_paragraph('2. cd daemon && swift build -c release')
doc.add_paragraph('3. make -C pam')
doc.add_paragraph('4. sudo bash scripts/install.sh')
doc.add_paragraph('5. Terminal 1: touchbridged serve --simulator')
doc.add_paragraph('6. Terminal 2: sudo echo "TouchBridge works!"')
doc.add_paragraph('If sudo succeeds without a password prompt — it works!')

doc.add_heading('Step 2: iPhone test (15 min, optional)', level=2)
doc.add_paragraph('1. Open companion/TouchBridge.xcodeproj in Xcode')
doc.add_paragraph('2. Set your Development Team in Signing & Capabilities')
doc.add_paragraph('3. Connect iPhone, select as run destination, Cmd+R')
doc.add_paragraph('4. Stop simulator daemon, start normal: touchbridged serve')
doc.add_paragraph('5. touchbridge-test pair → enter data on iPhone')
doc.add_paragraph('6. sudo echo test → Face ID prompt on iPhone')

# Safety
doc.add_heading('Safety Notes', level=1)
doc.add_paragraph('The only risky step is install.sh modifying /etc/pam.d/sudo. Mitigations:')
items = [
    'Creates backup at /etc/pam.d/sudo.touchbridge-backup',
    'Uses "auth sufficient" — password fallback always works',
    'Prompts before making any change',
    'sudo scripts/uninstall.sh fully reverses everything',
    'iPhone app is sandboxed — cannot access your data',
    'Daemon runs as user-level LaunchAgent, not root',
]
for item in items:
    doc.add_paragraph(item, style='List Bullet')

# Save
output_path = '/Users/arun/touchidproject/TouchBridge-Session-Notes.docx'
doc.save(output_path)
print(f'Saved to {output_path}')