cc8cbc4d3f
The CSP script-src 'self' policy blocked all inline onclick= event handlers in index.html (55+ handlers including toggleSettings(), switchPanel(), filterSessions() etc.), making the settings panel, sidebar navigation, and most interactive UI elements non-functional. Also restores https://cdn.jsdelivr.net to both script-src and style-src (required for Mermaid.js dynamic load in ui.js and Prism.js static load in index.html). This was present in the original PR #197 merge but was dropped in the v0.42.1 commit. script-src additions: - 'unsafe-inline': required for onclick=/oninput=/onchange= attributes - https://cdn.jsdelivr.net: Mermaid (dynamic) and Prism (static with SRI) style-src: retains 'unsafe-inline' + cdn.jsdelivr.net (Prism CSS) Co-authored-by: Nathan Esquenazi <nesquena@gmail.com>
93 lines
3.3 KiB
Python
93 lines
3.3 KiB
Python
"""
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Hermes Web UI -- HTTP helper functions.
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"""
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import json as _json
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from pathlib import Path
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from api.config import IMAGE_EXTS, MD_EXTS
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def require(body: dict, *fields) -> None:
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"""Phase D: Validate required fields. Raises ValueError with clean message."""
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missing = [f for f in fields if not body.get(f) and body.get(f) != 0]
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if missing:
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raise ValueError(f"Missing required field(s): {', '.join(missing)}")
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def bad(handler, msg, status: int=400):
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"""Return a clean JSON error response."""
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return j(handler, {'error': msg}, status=status)
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def _sanitize_error(e: Exception) -> str:
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"""Strip filesystem paths from exception messages before returning to client."""
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import re
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msg = str(e)
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# Remove absolute paths (Unix and Windows)
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msg = re.sub(r'(?:(?:/[a-zA-Z0-9_.-]+)+|(?:[A-Z]:\\[^\s]+))', '<path>', msg)
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return msg
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def safe_resolve(root: Path, requested: str) -> Path:
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"""Resolve a relative path inside root, raising ValueError on traversal."""
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resolved = (root / requested).resolve()
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resolved.relative_to(root.resolve()) # raises ValueError if outside root
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return resolved
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def _security_headers(handler):
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"""Add security headers to every response."""
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handler.send_header('X-Content-Type-Options', 'nosniff')
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handler.send_header('X-Frame-Options', 'DENY')
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handler.send_header('Referrer-Policy', 'same-origin')
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handler.send_header(
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'Content-Security-Policy',
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"default-src 'self'; "
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"script-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net; "
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"style-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net; "
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"img-src 'self' data:; font-src 'self' data:; connect-src 'self'; "
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"base-uri 'self'; form-action 'self'"
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)
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handler.send_header(
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'Permissions-Policy',
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'camera=(), microphone=(), geolocation=()'
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)
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def j(handler, payload, status: int=200) -> None:
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"""Send a JSON response."""
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body = _json.dumps(payload, ensure_ascii=False, indent=2).encode('utf-8')
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handler.send_response(status)
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handler.send_header('Content-Type', 'application/json; charset=utf-8')
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handler.send_header('Content-Length', str(len(body)))
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handler.send_header('Cache-Control', 'no-store')
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_security_headers(handler)
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handler.end_headers()
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handler.wfile.write(body)
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def t(handler, payload, status: int=200, content_type: str='text/plain; charset=utf-8') -> None:
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"""Send a plain text or HTML response."""
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body = payload if isinstance(payload, bytes) else str(payload).encode('utf-8')
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handler.send_response(status)
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handler.send_header('Content-Type', content_type)
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handler.send_header('Content-Length', str(len(body)))
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handler.send_header('Cache-Control', 'no-store')
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_security_headers(handler)
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handler.end_headers()
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handler.wfile.write(body)
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MAX_BODY_BYTES = 20 * 1024 * 1024 # 20MB limit for non-upload POST bodies
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def read_body(handler) -> dict:
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"""Read and JSON-parse a POST request body (capped at 20MB)."""
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length = int(handler.headers.get('Content-Length', 0))
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if length > MAX_BODY_BYTES:
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raise ValueError(f'Request body too large ({length} bytes, max {MAX_BODY_BYTES})')
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raw = handler.rfile.read(length) if length else b'{}'
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try:
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return _json.loads(raw)
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except Exception:
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return {}
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