1 files changed, 77 insertions, 0 deletions
diff --git a/client/src/leap/soledad/client/adbapi.py b/client/src/leap/soledad/client/adbapi.py
new file mode 100644
index 00000000..730999a3
--- /dev/null
+++ b/client/src/leap/soledad/client/adbapi.py
@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+# sqlcipher.py
+# Copyright (C) 2013, 2014 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 asyncrhonous interface to soledad using sqlcipher backend.
+It uses twisted.enterprise.adbapi.
+
+"""
+import os
+import sys
+
+from twisted.enterprise import adbapi
+from twisted.python import log
+
+DEBUG_SQL = os.environ.get("LEAP_DEBUG_SQL")
+if DEBUG_SQL:
+    log.startLogging(sys.stdout)
+
+
+def getConnectionPool(db=None, key=None):
+    return SQLCipherConnectionPool(
+        "pysqlcipher.dbapi2", database=db, key=key, check_same_thread=False)
+
+
+class SQLCipherConnectionPool(adbapi.ConnectionPool):
+
+    key = None
+
+    def connect(self):
+        """
+        Return a database connection when one becomes available.
+
+        This method blocks and should be run in a thread from the internal
+        threadpool. Don't call this method directly from non-threaded code.
+        Using this method outside the external threadpool may exceed the
+        maximum number of connections in the pool.
+
+        :return: a database connection from the pool.
+        """
+        self.noisy = DEBUG_SQL
+
+        tid = self.threadID()
+        conn = self.connections.get(tid)
+
+        if self.key is None:
+            self.key = self.connkw.pop('key', None)
+
+        if conn is None:
+            if self.noisy:
+                log.msg('adbapi connecting: %s %s%s' % (self.dbapiName,
+                                                        self.connargs or '',
+                                                        self.connkw or ''))
+            conn = self.dbapi.connect(*self.connargs, **self.connkw)
+
+            # XXX we should hook here all OUR SOLEDAD pragmas -----
+            conn.cursor().execute("PRAGMA key=%s" % self.key)
+            conn.commit()
+            # -----------------------------------------------------
+            # XXX profit of openfun isntead???
+
+            if self.openfun is not None:
+                self.openfun(conn)
+            self.connections[tid] = conn
+        return conn