Alex 8cb329273e fix: add path and URL validation to RAG tools ...

Add validation utilities to prevent unauthorized file reads and SSRF
when RAG tools accept LLM-controlled paths/URLs at runtime.

Changes:
- New crewai_tools.utilities.safe_path module with validate_file_path(),
  validate_directory_path(), and validate_url()
- File paths validated against base directory (defaults to cwd).
  Resolves symlinks and ../ traversal. Rejects escape attempts.
- URLs validated: file:// blocked entirely. HTTP/HTTPS resolves DNS
  and blocks private/reserved IPs (10.x, 172.16-31.x, 192.168.x,
  127.x, 169.254.x, 0.0.0.0, ::1, fc00::/7).
- Validation applied in RagTool.add() — catches all RAG search tools
  (JSON, CSV, PDF, TXT, DOCX, MDX, Directory, etc.)
- Removed file:// scheme support from DataTypes.from_content()
- CREWAI_TOOLS_ALLOW_UNSAFE_PATHS=true env var for backward compat
- 27 tests covering traversal, symlinks, private IPs, cloud metadata,
  IPv6, escape hatch, and valid paths/URLs

2026-04-07 00:01:13 -07:00

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