middleware: Add client_version attribute to request.

zerver/middleware.py

@@ -32,6 +32,7 @@ from zerver.lib.request import set_request, unset_request
 from zerver.lib.response import json_error, json_response_from_error, json_unauthorized
 from zerver.lib.subdomains import get_subdomain
 from zerver.lib.types import ViewFuncT
+from zerver.lib.user_agent import parse_user_agent
 from zerver.lib.utils import statsd
 from zerver.models import Realm, flush_per_request_caches, get_realm
 
@@ -291,6 +292,9 @@ class LogRequests(MiddlewareMixin):
     # method here too
     def process_user_agent(self, request: HttpRequest) -> None:
         request.client_name = get_client_name(request)
+        request.client_version = None
+        if request.client_name.startswith("Zulip"):
+            request.client_version = parse_user_agent(request.META["HTTP_USER_AGENT"])["version"]
 
     def process_request(self, request: HttpRequest) -> None:
         maybe_tracemalloc_listen()

zerver/tornado/handlers.py

@@ -232,6 +232,7 @@ class AsyncDjangoHandler(tornado.web.RequestHandler, base.BaseHandler):
         request.user = old_request.user
         request.client = old_request.client
         request.client_name = old_request.client_name
+        request.client_version = old_request.client_version
 
         # The saved_response attribute, if present, causes
         # rest_dispatch to return the response immediately before