Add code to rewrite Tchap Sygnal URL

Author: MatMaul

changelog.d/69.misc

@@ -0,0 +1 @@
+Add code to rewrite Tchap Sygnal URL.

synapse/rest/client/v1/pusher.py

@@ -25,6 +25,7 @@
 )
 from synapse.push import PusherConfigException
 from synapse.rest.client.v2_alpha._base import client_patterns
+from synapse.util import json_decoder, json_encoder
 
 logger = logging.getLogger(__name__)
 
@@ -91,6 +92,16 @@ async def on_POST(self, request):
         logger.debug("set pushkey %s to kind %s", content["pushkey"], content["kind"])
         logger.debug("Got pushers request with body: %r", content)
 
+        # rewrite push url from m.org sygnal to Tchap sygnal
+        if content["app_id"].startswith("fr.gouv."):
+            good_sygnal_url = "http://sygnal.tchap.gouv.fr"
+
+            parsed_data = json_decoder.decode(content["data"])
+            parsed_data["url"] = parsed_data["url"].replace(
+                "https://matrix.org", good_sygnal_url
+            )
+            content["data"] = json_encoder.encode(parsed_data)
+
         append = False
         if "append" in content:
             append = content["append"]