Add ipwhois library + dependencies

lib/dns/tsigkeyring.py

@@ -0,0 +1,46 @@
+# Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
+#
+# Permission to use, copy, modify, and distribute this software and its
+# documentation for any purpose with or without fee is hereby granted,
+# provided that the above copyright notice and this permission notice
+# appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+"""A place to store TSIG keys."""
+
+import base64
+
+import dns.name
+
+
+def from_text(textring):
+    """Convert a dictionary containing (textual DNS name, base64 secret) pairs
+    into a binary keyring which has (dns.name.Name, binary secret) pairs.
+    @rtype: dict"""
+
+    keyring = {}
+    for keytext in textring:
+        keyname = dns.name.from_text(keytext)
+        secret = base64.decodestring(textring[keytext])
+        keyring[keyname] = secret
+    return keyring
+
+
+def to_text(keyring):
+    """Convert a dictionary containing (dns.name.Name, binary secret) pairs
+    into a text keyring which has (textual DNS name, base64 secret) pairs.
+    @rtype: dict"""
+
+    textring = {}
+    for keyname in keyring:
+        keytext = keyname.to_text()
+        secret = base64.encodestring(keyring[keyname])
+        textring[keytext] = secret
+    return textring