api: Fix encoding of strings in video calls endpoint.

This removes unnecessary json_validator for string parameters in the
BigBlueButton video calls endpoints.  Note that this breaks links to
video meetings sent before the upgrade; there's not much we can do
about that.

Since this is the last commit in this series, we update the
ZULIP_FEATURE_LEVEL for this batch of changes.

Fixes part of #18035.

templates/zerver/api/changelog.md

@@ -10,6 +10,21 @@ below features are supported.
 
 ## Changes in Zulip 4.0
 
+**Feature level 63**
+
+* `PATCH /settings/notifications`: Removed unnecessary JSON-encoding of string
+  parameter `notification_sound`.
+* `PATCH /settings/display`: Removed unnecessary JSON-encoding of string
+  parameter `default_language`.
+* `POST /users/me/tutorial_status`: Removed unnecessary JSON-encoding of string
+  parameter `status`.
+* `POST /realm/domains`: Removed unnecessary JSON-encoding of string
+  parameter `domain`.
+* `PATCH /default_stream_groups/{user_id}`: Removed unnecessary JSON-encoding of string
+  parameters `new_group_name` and `new_description`.
+* `POST /users/me/hotspots`: Removed unnecessary JSON-encoding of string
+  parameter `hotspot`.
+
 **Feature level 62**
 
 * Added `moderators only` option for `wildcard_mention_policy`.

version.py

@@ -30,7 +30,7 @@ DESKTOP_WARNING_VERSION = "5.2.0"
 #
 # Changes should be accompanied by documentation explaining what the
 # new level means in templates/zerver/api/changelog.md.
-API_FEATURE_LEVEL = 62
+API_FEATURE_LEVEL = 63
 
 # Bump the minor PROVISION_VERSION to indicate that folks should provision
 # only when going from an old version of the code to a newer version. Bump

zerver/tests/test_create_video_call.py

@@ -176,8 +176,8 @@ class TestVideoCall(ZulipTestCase):
             self.assert_json_success(response)
             self.assertEqual(
                 response.json()["url"],
-                "/calls/bigbluebutton/join?meeting_id=%22zulip-1%22&password=%22AAAAAAAAAA%22"
+                "/calls/bigbluebutton/join?meeting_id=zulip-1&password=AAAAAAAAAA"
-                "&checksum=%22697939301a52d3a2f0b3c3338895c1a5ab528933%22",
+                "&checksum=697939301a52d3a2f0b3c3338895c1a5ab528933",
             )
 
     @responses.activate
@@ -189,7 +189,7 @@ class TestVideoCall(ZulipTestCase):
         )
         response = self.client_get(
             "/calls/bigbluebutton/join",
-            {"meeting_id": '"zulip-1"', "password": '"a"', "checksum": '"check"'},
+            {"meeting_id": "zulip-1", "password": "a", "checksum": "check"},
         )
         self.assertEqual(response.status_code, 302)
         self.assertEqual(isinstance(response, HttpResponseRedirect), True)
@@ -209,7 +209,7 @@ class TestVideoCall(ZulipTestCase):
         )
         response = self.client_get(
             "/calls/bigbluebutton/join",
-            {"meeting_id": '"zulip-1"', "password": '"a"', "checksum": '"check"'},
+            {"meeting_id": "zulip-1", "password": "a", "checksum": "check"},
         )
         self.assert_json_error(response, "Error authenticating to the Big Blue Button server.")
 
@@ -224,7 +224,7 @@ class TestVideoCall(ZulipTestCase):
         )
         response = self.client_get(
             "/calls/bigbluebutton/join",
-            {"meeting_id": '"zulip-1"', "password": '"a"', "checksum": '"check"'},
+            {"meeting_id": "zulip-1", "password": "a", "checksum": "check"},
         )
         self.assert_json_error(response, "Error connecting to the Big Blue Button server.")
 
@@ -238,7 +238,7 @@ class TestVideoCall(ZulipTestCase):
         )
         response = self.client_get(
             "/calls/bigbluebutton/join",
-            {"meeting_id": '"zulip-1"', "password": '"a"', "checksum": '"check"'},
+            {"meeting_id": "zulip-1", "password": "a", "checksum": "check"},
         )
         self.assert_json_error(response, "Big Blue Button server returned an unexpected error.")
 
@@ -246,6 +246,6 @@ class TestVideoCall(ZulipTestCase):
         with self.settings(BIG_BLUE_BUTTON_SECRET=None, BIG_BLUE_BUTTON_URL=None):
             response = self.client_get(
                 "/calls/bigbluebutton/join",
-                {"meeting_id": '"zulip-1"', "password": '"a"', "checksum": '"check"'},
+                {"meeting_id": "zulip-1", "password": "a", "checksum": "check"},
             )
             self.assert_json_error(response, "Big Blue Button is not configured.")

zerver/views/video_calls.py

@@ -188,9 +188,9 @@ def get_bigbluebutton_url(request: HttpRequest, user_profile: UserProfile) -> Ht
         "/calls/bigbluebutton/join",
         urlencode(
             {
-                "meeting_id": '"' + id + '"',
+                "meeting_id": id,
-                "password": '"' + password + '"',
+                "password": password,
-                "checksum": '"' + checksum + '"',
+                "checksum": checksum,
             }
         ),
     )
@@ -207,9 +207,9 @@ def get_bigbluebutton_url(request: HttpRequest, user_profile: UserProfile) -> Ht
 @has_request_variables
 def join_bigbluebutton(
     request: HttpRequest,
-    meeting_id: str = REQ(json_validator=check_string),
+    meeting_id: str = REQ(),
-    password: str = REQ(json_validator=check_string),
+    password: str = REQ(),
-    checksum: str = REQ(json_validator=check_string),
+    checksum: str = REQ(),
 ) -> HttpResponse:
     if settings.BIG_BLUE_BUTTON_URL is None or settings.BIG_BLUE_BUTTON_SECRET is None:
         return json_error(_("Big Blue Button is not configured."))