fix arbitrary position in the sanitized URL

Signed-off-by: tdruez <tdruez@aboutcode.org>

Author: tdruez

workflow/models.py

@@ -9,6 +9,7 @@
 import json
 import logging
 import os
+from urllib.parse import urlparse
 
 from django.conf import settings
 from django.contrib.contenttypes.fields import GenericForeignKey
@@ -589,7 +590,7 @@ def get_involved_users(self, exclude=None):
         return users
 
     def serialize_hook(self, hook):
-        if "hooks.slack.com" in hook.target_url:
+        if urlparse(hook.target_url).hostname == "hooks.slack.com":
             return request_slack_payload(self, created="added" in hook.event)
 
         from workflow.api import RequestSerializer
@@ -789,7 +790,7 @@ def as_html(self):
         return mark_safe(html)
 
     def serialize_hook(self, hook):
-        if "hooks.slack.com" in hook.target_url:
+        if urlparse(hook.target_url).hostname == "hooks.slack.com":
             return request_comment_slack_payload(self)
 
         from workflow.api import RequestCommentSerializer