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-rw-r--r--synapse/rest/client/v1/login.py64
1 files changed, 38 insertions, 26 deletions
diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py
index a99dcaab6f..0e12880ab5 100644
--- a/synapse/rest/client/v1/login.py
+++ b/synapse/rest/client/v1/login.py
@@ -125,6 +125,34 @@ class LoginRestServlet(ClientV1RestServlet):
 
     @defer.inlineCallbacks
     def do_cas_login(self, cas_response_body):
+        (user, attributes) = self.parse_cas_response(cas_response_body)
+        user_id = UserID.create(user, self.hs.hostname).to_string()
+        auth_handler = self.handlers.auth_handler
+        user_exists = yield auth_handler.does_user_exist(user_id)
+        if user_exists:
+            user_id, access_token, refresh_token = (
+                yield auth_handler.login_with_cas_user_id(user_id)
+            )
+            result = {
+                "user_id": user_id,  # may have changed
+                "access_token": access_token,
+                "refresh_token": refresh_token,
+                "home_server": self.hs.hostname,
+            }
+
+        else:
+            user_id, access_token = (
+                yield self.handlers.registration_handler.register(localpart=user)
+            )
+            result = {
+                "user_id": user_id,  # may have changed
+                "access_token": access_token,
+                "home_server": self.hs.hostname,
+            }
+
+        defer.returnValue((200, result))
+
+    def parse_cas_response(self, cas_response_body):
         root = ET.fromstring(cas_response_body)
         if not root.tag.endswith("serviceResponse"):
             raise LoginError(401, "Invalid CAS response", errcode=Codes.UNAUTHORIZED)
@@ -133,33 +161,17 @@ class LoginRestServlet(ClientV1RestServlet):
         for child in root[0]:
             if child.tag.endswith("user"):
                 user = child.text
-                user_id = UserID.create(user, self.hs.hostname).to_string()
-                auth_handler = self.handlers.auth_handler
-                user_exists = yield auth_handler.does_user_exist(user_id)
-                if user_exists:
-                    user_id, access_token, refresh_token = (
-                        yield auth_handler.login_with_cas_user_id(user_id)
-                    )
-                    result = {
-                        "user_id": user_id,  # may have changed
-                        "access_token": access_token,
-                        "refresh_token": refresh_token,
-                        "home_server": self.hs.hostname,
-                    }
-
-                else:
-                    user_id, access_token = (
-                        yield self.handlers.registration_handler.register(localpart=user)
-                    )
-                    result = {
-                        "user_id": user_id,  # may have changed
-                        "access_token": access_token,
-                        "home_server": self.hs.hostname,
-                    }
-
-                defer.returnValue((200, result))
+            if child.tag.endswith("attributes"):
+                attributes = {}
+                for attribute in child:
+                    if "}" in attribute.tag:
+                        attributes[attribute.tag.split("}")[1]] = attribute.text
+                    else:
+                        attributes[attribute.tag] = attribute.text
+        if user is None or attributes is None:
+            raise LoginError(401, "Invalid CAS response", errcode=Codes.UNAUTHORIZED)
 
-        raise LoginError(401, "Invalid CAS response", errcode=Codes.UNAUTHORIZED)
+        return (user, attributes)
 
 
 class LoginFallbackRestServlet(ClientV1RestServlet):