🔒 Fix insecure predictable temporary file creation

[sunnylqm]

🎯 What: Fixed an insecure predictable temporary file creation in AabParser.extractApk where Date.now() was used to generate a filename in a shared temporary directory.
⚠️ Risk: A predictable temporary file name in a shared directory like os.tmpdir() allows for a local symlink attack, potentially leading to unauthorized file overwrites or privilege escalation if the application is run with higher privileges.
🛡️ Solution: Replaced the predictable filename generation with fs.mkdtemp, which creates a securely randomized temporary directory within os.tmpdir(). The temporary file is now created inside this secure directory, and the cleanup logic removes the entire temporary directory.

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PR created automatically by Jules for task 9732741395195757645 started by @sunnylqm

Summary by CodeRabbit

• Bug Fixes
  • Improved the reliability of app package extraction by handling temporary files more safely, reducing the chance of leftover artifacts during processing.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 4c1167cc-4770-47e7-99a4-6f7e82a5a9a9

📥 Commits

Reviewing files that changed from the base of the PR and between 04536a0 and 03ca1bc.

📒 Files selected for processing (1)

• src/utils/app-info-parser/aab.ts

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📝 Walkthrough

Walkthrough

In AabParser.extractApk, the temporary output path is now created via fs.mkdtemp as a unique directory, with output.apks placed inside it. The finally cleanup removes the entire directory instead of the individual .apks file.

AAB Temp Directory Isolation

Layer / File(s)	Summary
Temp dir creation and cleanup src/utils/app-info-parser/aab.ts	Switches from a timestamped .apks file in os.tmpdir() to a mkdtemp-created unique directory; cleanup in finally now removes the directory.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

A bunny digs a fresh new hole,
Each APK gets its own little bowl,
No leftover crumbs in the temp tree,
Clean up the whole burrow — tidy and free!
🐇✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the security fix for predictable temporary file creation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/secure-temp-dir-9732741395195757645

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