19 lines
663 B
Python
19 lines
663 B
Python
"""Shared path validation helpers for tool implementations (skills, cron, credential files)."""
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from pathlib import Path
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from typing import Optional
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def validate_within_dir(path: Path, root: Path) -> Optional[str]:
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"""Error message if *path* does not resolve inside *root* (symlinks and ``..`` followed)."""
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try:
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path.resolve().relative_to(root.resolve())
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except (ValueError, OSError) as exc:
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return f"Path escapes allowed directory: {exc}"
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return None
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def has_traversal_component(path_str: str) -> bool:
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"""Cheap pre-check for a literal ``..`` component before full resolution."""
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return ".." in Path(path_str).parts
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