rename package directory

debianmemberportfolio/model/keyfinder.py

@@ -0,0 +1,109 @@
+# -*- python -*-
+# -*- coding: utf-8 -*-
+#
+# Debian Member Portfolio Service key finder module
+# Copyright (c) 2009-2014 Jan Dittberner <jan@dittberner.info>
+#
+# This file is part of Debian Member Portfolio Service.
+#
+# Debian Member Portfolio Service 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.
+#
+# Debian Member Portfolio Service 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+"""
+This module provides tools for finding PGP key information from a
+given keyring.
+"""
+import logging
+import time
+import sys
+
+db = None
+cachetimestamp = 0
+
+
+def _get_keyring_cache():
+    global db, cachetimestamp
+    if db is None or (time.time() - cachetimestamp) > 86300:
+        import anydbm
+        import pkg_resources
+        import os.path
+        filename = pkg_resources.resource_filename(__name__,
+                                                   'keyringcache')
+        logging.debug('reading cache data from %s', filename)
+        assert os.path.exists(filename) and os.path.isfile(filename)
+        db = anydbm.open(filename, 'r')
+        cachetimestamp = time.time()
+    return db
+
+
+def _get_cached(cachekey):
+    cache = _get_keyring_cache()
+    logging.debug('cache lookup for %s', cachekey)
+    if cachekey in cache:
+        logging.debug('found entry %s', cache[cachekey])
+        return cache[cachekey]
+    return None
+
+
+def getFingerprintByEmail(email):
+    """
+    Gets the fingerprints associated with the given email address if
+    available.
+    """
+    return _get_cached('fpr:email:%s' % email)
+
+
+def getRealnameByEmail(email):
+    """
+    Gets the real names associated with the given email address if
+    available.
+    """
+    return _get_cached('name:email:%s' % email)
+
+
+def getLoginByEmail(email):
+    """
+    Gets the logins associated with the given email address if
+    available.
+    """
+    return _get_cached('login:email:%s' % email)
+
+
+def getLoginByFingerprint(fpr):
+    """
+    Gets the login associated with the given fingerprint if available.
+    """
+    return _get_cached('login:fpr:%s' % fpr)
+
+
+def _dump_cache():
+    cache = _get_keyring_cache()
+    fprs = []
+    for key in cache.keys():
+        if key.startswith('email:fpr:'):
+            fpr = key.replace('email:fpr:', '')
+            if not fpr in fprs:
+                fprs.append(fpr)
+
+    for fpr in fprs:
+        login = getLoginByFingerprint(fpr)
+        email = _get_cached('email:fpr:%s' % fpr)
+        name = _get_cached('name:fpr:%s' % fpr)
+
+        print fpr, login, ':'
+        print '   ', name, email
+
+
+if __name__ == '__main__':
+    logging.basicConfig(stream=sys.stderr, level=logging.WARNING)
+    _dump_cache()