1 files changed, 55 insertions, 0 deletions
diff --git a/bin/python/isc/keyzone.py.in b/bin/python/isc/keyzone.py.in
new file mode 100644
index 0000000..2451d43
--- /dev/null
+++ b/bin/python/isc/keyzone.py.in
@@ -0,0 +1,55 @@
+############################################################################
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+############################################################################
+
+import os
+import sys
+import re
+from subprocess import Popen, PIPE
+
+########################################################################
+# Exceptions
+########################################################################
+class KeyZoneException(Exception):
+    pass
+
+########################################################################
+# class keyzone
+########################################################################
+class keyzone:
+    """reads a zone file to find data relevant to keys"""
+
+    def __init__(self, name, filename, czpath):
+        self.maxttl = None
+        self.keyttl = None
+
+        if not name:
+            return
+
+        if not czpath or not os.path.isfile(czpath) \
+                or not os.access(czpath, os.X_OK):
+            raise KeyZoneException('"named-compilezone" not found')
+            return
+
+        maxttl = keyttl = None
+
+        fp, _ = Popen([czpath, "-o", "-", name, filename],
+                      stdout=PIPE, stderr=PIPE).communicate()
+        for line in fp.splitlines():
+            if re.search('^[:space:]*;', line):
+                continue
+            fields = line.split()
+            if not maxttl or int(fields[1]) > maxttl:
+                maxttl = int(fields[1])
+            if fields[3] == "DNSKEY":
+                keyttl = int(fields[1])
+
+        self.keyttl = keyttl
+        self.maxttl = maxttl