added httpheaders.py

onionr/onionrservices/httpheaders.py

@@ -0,0 +1,28 @@
+'''
+    Onionr - P2P Anonymous Storage Network
+
+    Set default onionr http headers
+'''
+'''
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+'''
+def set_default_onionr_http_headers(flask_response):
+    '''Response headers'''
+    flask_response.headers['Content-Security-Policy'] = "default-src 'none'; style-src data: 'unsafe-inline'; img-src data:"
+    flask_response.headers['X-Frame-Options'] = 'deny'
+    flask_response.headers['X-Content-Type-Options'] = "nosniff"
+    flask_response.headers['Server'] = ''
+    flask_response.headers['Date'] = 'Thu, 1 Jan 1970 00:00:00 GMT' # Clock info is probably useful to attackers. Set to unix epoch.
+    flask_response.headers['Connection'] = "close"
+    return flask_response