Issue 2234 - Add a WSGI controller to collect email addresses for the Adblock Browser iOS launch

sitescripts/submitEmail/web/submitEmail.py

+# coding: utf-8
+
+# This file is part of the Adblock Plus web scripts,
+# Copyright (C) 2006-2015 Eyeo GmbH
+#
+# Adblock Plus is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3 as
+# published by the Free Software Foundation.
+#
+# Adblock Plus 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 Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+
+import io
+import fcntl
+
+from sitescripts.utils import get_config
+from sitescripts.web import url_handler, form_handler
+
+@url_handler('/submitEmail')
+@form_handler
+def submitEmail(environ, start_response, data):
+  email = data.get('email', '').strip()
+  if not email:
+    start_response('400 Bad Request', [('Content-Type', 'text/plain')])
+    return ['No email address given.']
+
+  filename = get_config().get('submitEmail', 'file')
+  with io.open(filename, 'a', encoding='utf-8') as file:
+    fcntl.lockf(file, fcntl.LOCK_EX)
+    try:
+      file.write(email)
+      file.write(u'\n')

[Wladimir Palant, 2015/04/06 18:07:30]

Nit: just '\n', not a Unicode string?

[Sebastian Noack, 2015/04/06 18:17:26]

Nope, doesn't work, since we have a TextIOWrapper, whcih raises a ValueError if
you attempt to write str objects. This is also the reason I can't use the print
statement here, because it converts the argument given apparently to str
regardless of the kind of file-like object used.

+      file.flush()
+    finally:
+      fcntl.lockf(file, fcntl.LOCK_UN)
+
+  start_response('200 OK', [('Content-Type', 'text/plain')])
+  return ["Thanks for your submission! We'll notify you before the launch."]