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35 lines
1.0 KiB
Python
35 lines
1.0 KiB
Python
from pathlib import Path
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from typing import Optional
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def validate_tool_path(path: str) -> Optional[str]:
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"""Validate and normalize a tool file path, or return None if invalid.
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Shared by MemoryTool and WikiTool. Strips whitespace, ensures a leading
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slash, rejects directory traversal (``..`` or ``//``), and preserves a
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trailing slash to mark directories.
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Args:
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path: User-provided path.
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Returns:
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Normalized path, or None if the path is empty or invalid.
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"""
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if not path:
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return None
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path = path.strip()
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is_directory = path.endswith("/")
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if not path.startswith("/"):
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path = "/" + path
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if ".." in path or path.count("//") > 0:
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return None
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try:
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normalized = str(Path(path).as_posix())
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if not normalized.startswith("/"):
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return None
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if is_directory and not normalized.endswith("/") and normalized != "/":
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normalized = normalized + "/"
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return normalized
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except Exception:
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return None
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