fix: Require an explicit opt in to unsafety; defer decision to call time #246
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Codejail currently makes a decision at module load time of whether it should run all code safely or unsafely, and defaults to unsafely. This causes several problems: - Any misconfiguration of codejail (such as a missing Django setting or middleware) results in the application becoming immediately and entirely vulnerable to anyone who can submit code. - Codejail's behavior changes depending on when the `codejail.safe_exec` module is loaded during application initialization. This causes unstable behavior and is confusing for developers. This change switches the `ALWAYS_BE_UNSAFE` check to occur only at the time that `safe_exec` is actually called, rather than at module load time. The check for whether codejail is configured for Python is also moved to call time, but no longer automatically switches codejail to unsafe mode. Instead, it raises an exception to notify the user of their error.
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robrap
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May 12, 2025
Code: - Make log message scarier Docs: - Remove now-incorrect description of falling back to unsafe mode - Add bold warning - Expand on AppArmor requirements Tests: - Add tests for code changes. - Remove auto-skip based on ALWAYS_BE_UNSAFE, which no longer gets computed at module load time; it will always be false unless explicitly set. Also, add some docs around how testing works.
robrap
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May 13, 2025
robrap
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May 14, 2025
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Codejail currently makes a decision at module load time of whether it should run all code safely or unsafely, and defaults to unsafely. This causes several problems:
codejail.safe_execmodule is loaded during application initialization. This causes unstable behavior and is confusing for developers.This change switches the
ALWAYS_BE_UNSAFEcheck to occur only at the time thatsafe_execis actually called, rather than at module load time.The check for whether codejail is configured for Python is also moved to call time, but no longer automatically switches codejail to unsafe mode. Instead, it raises an exception to notify the user of their error.
This addresses #16