From 617495cca8b2799945be2c2b042dcc7ce905741a Mon Sep 17 00:00:00 2001
From: Cqoicebordel <Cqoicebordel@users.noreply.github.com>
Date: Tue, 9 Jun 2015 16:16:07 +0200
Subject: [PATCH] Add a plugin to remove trackers from results URLs

---
 searx/plugins/__init__.py            |  4 ++-
 searx/plugins/tracker_url_remover.py | 40 ++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 searx/plugins/tracker_url_remover.py

diff --git a/searx/plugins/__init__.py b/searx/plugins/__init__.py
index 5ac3f447c..d61eb6073 100644
--- a/searx/plugins/__init__.py
+++ b/searx/plugins/__init__.py
@@ -21,7 +21,8 @@ logger = logger.getChild('plugins')
 
 from searx.plugins import (https_rewrite,
                            self_ip,
-                           search_on_category_select)
+                           search_on_category_select,
+                           tracker_url_remover)
 
 required_attrs = (('name', str),
                   ('description', str),
@@ -73,3 +74,4 @@ plugins = PluginStore()
 plugins.register(https_rewrite)
 plugins.register(self_ip)
 plugins.register(search_on_category_select)
+plugins.register(tracker_url_remover)
diff --git a/searx/plugins/tracker_url_remover.py b/searx/plugins/tracker_url_remover.py
new file mode 100644
index 000000000..c8459548f
--- /dev/null
+++ b/searx/plugins/tracker_url_remover.py
@@ -0,0 +1,40 @@
+'''
+searx is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+searx is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with searx. If not, see < http://www.gnu.org/licenses/ >.
+
+(C) 2015 by Adam Tauber, <asciimoo@gmail.com>
+'''
+
+from flask.ext.babel import gettext
+import re
+
+re1 = re.compile(r'utm_[^&]+&?')
+re2 = re.compile(r'(wkey|wemail)[^&]+&?')
+re3 = re.compile(r'&$')
+re4 = re.compile(r'^\?$')
+
+name = gettext('Tracker URL remover')
+description = gettext('Remove trackers arguments from the returned URL')
+default_on = True
+
+
+def on_result(request, ctx):
+    url = ctx['result']['url']
+
+    url = re1.sub('', url)
+    url = re2.sub('', url)
+    url = re3.sub('', url)
+    url = re4.sub('', url)
+
+    ctx['result']['url'] = url
+    return True