Port dkimverify.py.

dkimverify.py

@@ -17,13 +17,22 @@
 # 3. This notice may not be removed or altered from any source distribution.
 #
 # Copyright (c) 2008 Greg Hewgill http://hewgill.com
+#
+# This has been modified from the original software.
+# Copyright (c) 2011 William Grant <me@williamgrant.id.au>
+
+from __future__ import print_function
 
 import sys
 
 import dkim
 
+if sys.version_info.major >= 3:
+    # Make sys.stdin a binary stream.
+    sys.stdin = sys.stdin.detach()
+
 message = sys.stdin.read()
 if not dkim.verify(message):
-    print "signature verification failed"
+    print("signature verification failed")
     sys.exit(1)
-print "signature ok"
+print("signature ok")