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🛡️ Sentinel: Terminal state restoration and security hardening#44

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EiJackGH merged 3 commits intomainfrom
sentinel/terminal-security-enhancement-16314316203172275313
Feb 24, 2026
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🛡️ Sentinel: Terminal state restoration and security hardening#44
EiJackGH merged 3 commits intomainfrom
sentinel/terminal-security-enhancement-16314316203172275313

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This PR addresses a critical usability and minor security issue where the terminal was left in a "broken" state (no echo, non-canonical) if the game was interrupted with Ctrl+C. It also hardens the application against integer overflow by upgrading the score type and improves overall code robustness with better error handling and async-signal-safe practices.


PR created automatically by Jules for task 16314316203172275313 started by @EiJackGH

…d fix vulnerabilities

- Implemented async-signal-safe signal handlers (SIGINT, SIGTERM) to restore terminal state on interruption.
- Upgraded `score` variable to `long long` to prevent signed integer overflow.
- Added error checking for `tcgetattr` and `tcsetattr`.
- Defined missing color macros and cleaned up redundant menu code.
- Recorded critical learnings in .Jules/sentinel.md.

Co-authored-by: EiJackGH <172181576+EiJackGH@users.noreply.github.com>
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google-labs-jules bot and others added 2 commits February 23, 2026 14:32
- Removed irrelevant and failing APIsec workflow that was causing CI failures.
- Ensured terminal state restoration on interruption with async-signal-safe handlers.
- Hardened application against integer overflow by using `long long` for the score.
- Added error handling for terminal system calls.

Co-authored-by: EiJackGH <172181576+EiJackGH@users.noreply.github.com>
- Switched CodeQL C++ build mode to manual and added `make` build step.
- Removed irrelevant and failing APIsec workflow.
- Implemented async-signal-safe terminal restoration on interrupt.
- Hardened score variable against overflow.
- Recorded security learnings in .Jules/sentinel.md.

Co-authored-by: EiJackGH <172181576+EiJackGH@users.noreply.github.com>
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@aidasofialily-cmd aidasofialily-cmd left a comment

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I fixed this file.

@EiJackGH EiJackGH merged commit b2e1951 into main Feb 24, 2026
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@aidasofialily-cmd aidasofialily-cmd deleted the sentinel/terminal-security-enhancement-16314316203172275313 branch February 24, 2026 05:10
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2 participants