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Krzysztof kuhy Rudnicki 00c383008a phone_focus_mode: prevent Magisk app from disabling Systemless Hosts module 
The Magisk app's Modules tab "Disable" / "Remove" buttons work by
creating marker files (disable, remove) in /data/adb/modules/hosts/.
Tapping Disable in the app on next boot would skip the module's
magic-mount of /system/etc/hosts, silently disabling all hosts-file
blocking.

Defense in depth:

1. deploy.sh chattr +i's the module dir + its hosts file so the
   Magisk app cannot create disable/remove markers (kernel returns
   EPERM). The +i attribute survives reboot.

2. hosts_enforcer.sh adds protect_magisk_module(): every poll cycle
   (and on startup) scans for disable/remove/update markers, deletes
   them, logs TAMPER, and re-asserts +i on the dir. Safety net in
   case the lock is bypassed.

3. sync_magisk_module() now drops +i briefly before its cp and
   re-locks via protect_magisk_module() so workout-state hosts
   swaps still work.

4. deploy.sh detects the previously-silent failure mode of the
   module being enabled on disk but not yet magic-mounted (no
   /system/etc/hosts) and aborts with a clear reboot-required
   message instead of producing a deploy that does nothing.

5. focus_ctl.sh hosts-status now prints the lock state and warns
   about any present markers.

Verified end-to-end on BL9000EEA0000102:
- Pre-reboot: chattr +i set, touch /data/adb/modules/hosts/disable
  returns Operation not permitted.
- Post-reboot: /system/etc/hosts magic-mounted (178303 lines, sha
  matches canonical), lock survives reboot, ping youtube.com -> 127.0.0.1.
- Tamper test: chattr -i + touch disable -> enforcer logs
  'TAMPER: removed Magisk module marker' within 15s and re-locks.

Documented intentional override path inline (focus_ctl.sh hosts-stop;
chattr -i; touch disable).
2026-05-06 21:40:51 +02:00
.github feat(phone-focus): add recovery workflow, automation scripts, and docs 2026-05-01 19:07:27 +02:00
.vscode Fix pre-commit OOM: oom_score_adj + Node heap caps 2026-04-12 21:34:56 +02:00
C chore(tooling): update pre-commit config and repo ignores 2026-05-01 19:06:43 +02:00
CPP Add tests and fix pre-commit issues across all projects 2026-04-12 20:45:24 +02:00
docs/superpowers feat(phone-focus): add recovery workflow, automation scripts, and docs 2026-05-01 19:07:27 +02:00
horatio chore: optimize pre-commit, remove tracked binaries, fix lint issues 2026-04-10 18:48:37 +02:00
linux_configuration Apply focus-mode, screen-locker, and steam backlog updates 2026-05-03 22:41:53 +02:00
phone_focus_mode phone_focus_mode: prevent Magisk app from disabling Systemless Hosts module 2026-05-06 21:40:51 +02:00
pomodoro_app Add tests and fix pre-commit issues across all projects 2026-04-12 20:45:24 +02:00
python_pkg Add Peak (app ID 3527290) to PROTECTED_APP_IDS to prevent uninstall 2026-05-04 15:59:54 +02:00
robotgo_demo feat: robotgo improvements in phone focus bluetooth and printer scripts 2026-03-09 18:34:15 +01:00
scripts feat: Add shell script quality enforcement and polling optimization guidelines 2026-05-03 21:42:49 +02:00
sonic_pi feat: text learning pipe 2025-12-27 17:22:17 +01:00
TS Add tests and fix pre-commit issues across all projects 2026-04-12 20:45:24 +02:00
.binary-allowlist feat: make horatio audio work on android 2026-03-30 20:18:33 +02:00
.copilotignore chore(tooling): update pre-commit config and repo ignores 2026-05-01 19:06:43 +02:00
.fvmrc fixes for existing scripts and pomodoro with local sync 2026-02-14 18:42:20 +01:00
.gitignore phone_focus_mode: add persistent home-mode status notification 2026-04-20 15:33:46 +02:00
.pre-commit-config.yaml feat: Add shell script quality enforcement and polling optimization guidelines 2026-05-03 21:42:49 +02:00
batch3_bloatware_uninstall.sh Apply focus-mode, screen-locker, and steam backlog updates 2026-05-03 22:41:53 +02:00
COMPLETE_IMPLEMENTATION_SUMMARY.md feat: Add shell script quality enforcement and polling optimization guidelines 2026-05-03 21:42:49 +02:00
DELIVERABLES_INDEX.md feat: Add shell script quality enforcement and polling optimization guidelines 2026-05-03 21:42:49 +02:00
eslint.config.mjs feat: great beautiful fixes 2026-02-20 00:37:32 +01:00
lint_python.sh fix: resolve shellcheck warnings 2025-11-30 13:48:17 +01:00
out.json test: achieve 100% branch coverage across all python_pkg packages 2026-03-21 17:51:36 +01:00
package-lock.json fix: resolve all pre-commit hook failures after file splits 2026-03-18 22:20:05 +01:00
package.json feat: great beautiful fixes 2026-02-20 00:37:32 +01:00
POLLING_OPTIMIZATION_REPORT.md feat: Add shell script quality enforcement and polling optimization guidelines 2026-05-03 21:42:49 +02:00
pyproject.toml chore(tooling): update pre-commit config and repo ignores 2026-05-01 19:06:43 +02:00
QUICK_OPTIMIZATION_GUIDE.md feat: Add shell script quality enforcement and polling optimization guidelines 2026-05-03 21:42:49 +02:00
QUICK_REFERENCE_SHELL_QUALITY.md feat: Add shell script quality enforcement and polling optimization guidelines 2026-05-03 21:42:49 +02:00
README.md refactor: enforce 500-line limit on all Python source files 2026-03-17 22:47:42 +01:00
requirements-dev.txt fix: correct shebang and executable permissions 2025-11-30 13:42:16 +01:00
requirements.txt Add tests and fix pre-commit issues across all projects 2026-04-12 20:45:24 +02:00
run.sh Apply focus-mode, screen-locker, and steam backlog updates 2026-05-03 22:41:53 +02:00
setup.sh feat: great beautiful fixes 2026-02-20 00:37:32 +01:00
SHELL_QUALITY_IMPLEMENTATION_SUMMARY.md feat: Add shell script quality enforcement and polling optimization guidelines 2026-05-03 21:42:49 +02:00
SHELL_SCRIPT_QUALITY_GUIDELINES.md feat: Add shell script quality enforcement and polling optimization guidelines 2026-05-03 21:42:49 +02:00

README.md

testsAndMisc

A collection of personal projects, scripts, and experiments — from a GPS-based phone focus tool to C/C++ demos, with CI, linting, and pre-commit hooks across the board.

Highlights

Phone Focus Mode

Location-based app restriction for rooted Android. Automatically disables non-whitelisted apps within 500 m of home using ADB + Magisk. Features Haversine distance calculation, hysteresis to prevent toggling, fail-safe unlock, and state persistence. Bash, Android ADB.

Linux Configuration

Automated Arch Linux setup: fresh-install scripts, i3 window manager config, LaTeX environment, and system tests. Includes documentation and test result logging.

Scripts

Utility scripts for development workflows — C/C++ build file validation, secret detection, and custom makepkg helpers.

Other Projects

Directory Description
poker_modifier_app/ Browser-based poker hand modifier (HTML/JS)
pomodoro_app/ Pomodoro timer (Flutter)
Bash/ FFmpeg build scripts
C/, CPP/, TS/ Language-specific experiments
sonic_pi/ Music programming experiments
robotgo_demo/ Go desktop automation demo
python_pkg/ Python package structure example

Tooling

  • Python linting: Ruff with all rules enabled (see pyproject.toml)
  • JS/TS linting: ESLint (flat config)
  • CI: GitHub Actions — lint, build, and test on push
  • Testing: pytest (Python), custom shell-based test harness for scripts