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-rw-r--r--synapse/handlers/auth.py16
1 files changed, 14 insertions, 2 deletions
diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index a19c556437..648fe91f53 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -1472,10 +1472,22 @@ class AuthHandler(BaseHandler):
         # Remove the query parameters from the redirect URL to get a shorter version of
         # it. This is only to display a human-readable URL in the template, but not the
         # URL we redirect users to.
-        redirect_url_no_params = client_redirect_url.split("?")[0]
+        url_parts = urllib.parse.urlsplit(client_redirect_url)
+
+        if url_parts.scheme == "https":
+            # for an https uri, just show the netloc (ie, the hostname. Specifically,
+            # the bit between "//" and "/"; this includes any potential
+            # "username:password@" prefix.)
+            display_url = url_parts.netloc
+        else:
+            # for other uris, strip the query-params (including the login token) and
+            # fragment.
+            display_url = urllib.parse.urlunsplit(
+                (url_parts.scheme, url_parts.netloc, url_parts.path, "", "")
+            )
 
         html = self._sso_redirect_confirm_template.render(
-            display_url=redirect_url_no_params,
+            display_url=display_url,
             redirect_url=redirect_url,
             server_name=self._server_name,
             new_user=new_user,