Additional VNC WebUI Changes

Data/Engine/services/API/server/info.py

@@ -4,16 +4,19 @@
 #
 # API Endpoints (if applicable):
 # - GET /api/server/time (Operator Session) - Returns the server clock in multiple formats.
+# - GET /api/server/certificates/root (Operator Session) - Downloads the Borealis root CA certificate.
 # ======================================================
 
 from __future__ import annotations
 
 from datetime import datetime, timezone
-from typing import TYPE_CHECKING, Any, Dict
+from pathlib import Path
+from typing import TYPE_CHECKING, Any, Dict, Optional
 
-from flask import Blueprint, Flask, jsonify
+from flask import Blueprint, Flask, jsonify, send_file
 
 from ...auth import RequestAuthContext
+from ....security import certificates
 
 if TYPE_CHECKING:  # pragma: no cover - typing aide
     from .. import EngineServiceAdapters
@@ -33,6 +36,29 @@ def _serialize_time(now_local: datetime, now_utc: datetime) -> Dict[str, Any]:
     }
 
 
+def _resolve_root_ca_path(adapters: "EngineServiceAdapters") -> Optional[Path]:
+    candidates = []
+    try:
+        candidates.append(certificates.engine_certificates_root() / "borealis-root-ca.pem")
+    except Exception:
+        pass
+
+    cert_path = getattr(adapters.context, "tls_cert_path", None)
+    if cert_path:
+        try:
+            candidates.append(Path(str(cert_path)).expanduser().resolve().parent / "borealis-root-ca.pem")
+        except Exception:
+            candidates.append(Path(str(cert_path)).parent / "borealis-root-ca.pem")
+
+    for candidate in candidates:
+        try:
+            if candidate and candidate.is_file():
+                return candidate
+        except Exception:
+            continue
+    return None
+
+
 def register_info(app: Flask, adapters: "EngineServiceAdapters") -> None:
     """Expose server telemetry endpoints used by the admin interface."""
 
@@ -54,4 +80,20 @@ def register_info(app: Flask, adapters: "EngineServiceAdapters") -> None:
         payload = _serialize_time(now_local, now_utc)
         return jsonify(payload)
 
+    @blueprint.route("/api/server/certificates/root", methods=["GET"])
+    def server_root_ca() -> Any:
+        _, error = auth.require_user()
+        if error:
+            return jsonify(error[0]), error[1]
+        path = _resolve_root_ca_path(adapters)
+        if not path:
+            return jsonify({"error": "root_ca_missing"}), 404
+        return send_file(
+            str(path),
+            mimetype="application/x-pem-file",
+            as_attachment=True,
+            download_name="borealis-root-ca.pem",
+            max_age=0,
+        )
+
     app.register_blueprint(blueprint)