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+# -*- coding: utf-8 -*-
+# url_mapper.py
+# Copyright (C) 2013 LEAP
+#
+# 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 <http://www.gnu.org/licenses/>.
+"""
+An URL mapper that represents authorized paths.
+"""
+from routes.mapper import Mapper
+
+from leap.soledad.common import SHARED_DB_NAME
+from leap.soledad.common.l2db import DBNAME_CONSTRAINTS
+
+
+class URLMapper(object):
+ """
+ Maps the URLs users can access.
+ """
+
+ def __init__(self):
+ self._map = Mapper(controller_scan=None)
+ self._connect_urls()
+ self._map.create_regs()
+
+ def match(self, path, method):
+ environ = {'PATH_INFO': path, 'REQUEST_METHOD': method}
+ return self._map.match(environ=environ)
+
+ def _connect(self, pattern, http_methods):
+ self._map.connect(
+ None, pattern, http_methods=http_methods,
+ conditions=dict(method=http_methods),
+ requirements={'dbname': DBNAME_CONSTRAINTS})
+
+ def _connect_urls(self):
+ """
+ Register the authorization info in the mapper using C{SHARED_DB_NAME}
+ as the user's database name.
+
+ This method sets up the following authorization rules:
+
+ URL path | Authorized actions
+ ----------------------------------------------------
+ / | GET
+ /robots.txt | GET
+ /shared-db | GET
+ /shared-db/doc/{any_id} | GET, PUT, DELETE
+ /user-{uuid}/sync-from/{source} | GET, PUT, POST
+ /blobs/{uuid}/{blob_id} | GET, PUT, POST
+ /blobs/{uuid} | GET
+ """
+ # auth info for global resource
+ self._connect('/', ['GET'])
+ # robots
+ self._connect('/robots.txt', ['GET'])
+ # auth info for shared-db database resource
+ self._connect('/%s' % SHARED_DB_NAME, ['GET'])
+ # auth info for shared-db doc resource
+ self._connect('/%s/doc/{id:.*}' % SHARED_DB_NAME,
+ ['GET', 'PUT', 'DELETE'])
+ # auth info for user-db sync resource
+ self._connect('/user-{uuid}/sync-from/{source_replica_uid}',
+ ['GET', 'PUT', 'POST'])
+ # auth info for blobs resource
+ self._connect('/blobs/{uuid}/{blob_id}', ['GET', 'PUT'])
+ self._connect('/blobs/{uuid}', ['GET'])