ASGI via Daphne for websockets, WSGI via Gunicorn. Implemented xterm.js for shell proxy to target servers.

app/apps/servers/permissions.py

@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+from django.db.models import Q
+from django.utils import timezone
+
+from apps.access.models import AccessRequest
+
+
+def user_can_shell(user, server, now=None) -> bool:
+    if user.has_perm("servers.shell_server", server):
+        return True
+    if now is None:
+        now = timezone.now()
+    return (
+        AccessRequest.objects.filter(
+            requester=user,
+            server=server,
+            status=AccessRequest.Status.APPROVED,
+            request_shell=True,
+        )
+        .filter(Q(expires_at__isnull=True) | Q(expires_at__gt=now))
+        .exists()
+    )