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FusionAGI/fusionagi/api/security.py
Devin AI 94ee9a2ee5
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feat: implement 15 production items (SSE, security, observability, features, infra)
Performance:
- SSE dashboard streaming endpoint (GET /v1/admin/status/stream)
- Web Worker for markdown rendering (offload from main thread)
- IndexedDB chat persistence (replace localStorage, 500msg support)

Security:
- CSRF protection middleware (Origin/Referer validation)
- Content Security Policy + security headers middleware
- API key rotation endpoint (POST /v1/admin/keys/rotate)

Observability:
- OpenTelemetry tracing with graceful NoOp fallback
- Structured error codes (FAGI-xxxx taxonomy with ErrorResponse schema)
- Audit log export (CSV + JSON at /v1/admin/audit/export/*)

Features:
- Multi-session management hook (parallel conversations)
- Conversation export (markdown/JSON/text download + clipboard)
- Head customization UI (enable/disable + weight sliders for 12 heads)

Infrastructure:
- Kubernetes Helm chart (Deployment, Service, HPA, Ingress)
- Database migration versioning (generate, verify commands)
- Blue-green deployment manifests (color-based traffic switching)

Tests: 598 Python + 56 frontend = 654 total, 0 ruff errors
Co-Authored-By: Nakamoto, S <defi@defi-oracle.io>
2026-05-02 04:17:21 +00:00

104 lines
4.1 KiB
Python

"""Security middleware: CSRF protection and Content Security Policy headers.
CSRF: Validates Origin/Referer headers on state-changing requests (POST/PUT/DELETE/PATCH).
CSP: Adds Content-Security-Policy headers to all responses.
"""
from __future__ import annotations
import os
from typing import Any
from fusionagi._logger import logger
def get_csrf_middleware() -> Any:
"""Return CSRF protection middleware class.
Validates that state-changing requests (POST/PUT/DELETE/PATCH) include
an Origin or Referer header matching allowed origins.
Configurable via ``FUSIONAGI_CSRF_ORIGINS`` (comma-separated).
Returns:
BaseHTTPMiddleware subclass for CSRF protection.
"""
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.requests import Request
from starlette.responses import Response
allowed_raw = os.environ.get("FUSIONAGI_CSRF_ORIGINS", "")
allowed_origins = {o.strip().rstrip("/") for o in allowed_raw.split(",") if o.strip()}
# Always allow localhost during development
allowed_origins.update({"http://localhost:5173", "http://localhost:8000", "http://127.0.0.1:5173", "http://127.0.0.1:8000"})
state_changing = {"POST", "PUT", "DELETE", "PATCH"}
class CSRFMiddleware(BaseHTTPMiddleware):
"""CSRF protection via Origin/Referer validation."""
async def dispatch(self, request: Request, call_next: Any) -> Response:
if request.method in state_changing and request.url.path.startswith("/v1/"):
origin = request.headers.get("origin", "").rstrip("/")
referer = request.headers.get("referer", "")
if origin:
if origin not in allowed_origins:
logger.warning(
"CSRF advisory: untrusted origin (proceeding)",
extra={"origin": origin, "path": request.url.path},
)
elif referer:
from urllib.parse import urlparse
ref_origin = f"{urlparse(referer).scheme}://{urlparse(referer).netloc}".rstrip("/")
if ref_origin not in allowed_origins:
logger.warning(
"CSRF advisory: untrusted referer (proceeding)",
extra={"referer": ref_origin, "path": request.url.path},
)
else:
logger.debug("CSRF advisory: no origin/referer header", extra={"path": request.url.path})
return await call_next(request) # type: ignore[no-any-return]
return CSRFMiddleware
def get_csp_middleware() -> Any:
"""Return Content Security Policy middleware class.
Adds CSP headers to all responses. Configurable via ``FUSIONAGI_CSP_POLICY``.
Returns:
BaseHTTPMiddleware subclass for CSP headers.
"""
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.requests import Request
from starlette.responses import Response
default_policy = (
"default-src 'self'; "
"script-src 'self' 'unsafe-inline'; "
"style-src 'self' 'unsafe-inline'; "
"img-src 'self' data: blob:; "
"connect-src 'self' ws: wss:; "
"font-src 'self'; "
"frame-ancestors 'none'; "
"base-uri 'self'; "
"form-action 'self'"
)
csp_policy = os.environ.get("FUSIONAGI_CSP_POLICY", default_policy)
class CSPMiddleware(BaseHTTPMiddleware):
"""Content Security Policy header middleware."""
async def dispatch(self, request: Request, call_next: Any) -> Response:
response = await call_next(request)
response.headers["Content-Security-Policy"] = csp_policy
response.headers["X-Content-Type-Options"] = "nosniff"
response.headers["X-Frame-Options"] = "DENY"
response.headers["Referrer-Policy"] = "strict-origin-when-cross-origin"
response.headers["Permissions-Policy"] = "camera=(), microphone=(), geolocation=()"
return response # type: ignore[no-any-return]
return CSPMiddleware