Mercurial > p > roundup > code
comparison website/issues/extensions/timestamp.py @ 4024:c2d0d3e9099d website
svn repository setup
| author | Stefan Seefeld <stefan@users.sourceforge.net> |
|---|---|
| date | Fri, 06 Feb 2009 13:16:31 +0000 |
| parents | |
| children | 35ea9b1efc14 |
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| 4023:86c38b5aed66 | 4024:c2d0d3e9099d |
|---|---|
| 1 import time, struct, base64 | |
| 2 from roundup.cgi.actions import RegisterAction | |
| 3 from roundup.cgi.exceptions import * | |
| 4 | |
| 5 def timestamp(): | |
| 6 return base64.encodestring(struct.pack("i", time.time())).strip() | |
| 7 | |
| 8 def unpack_timestamp(s): | |
| 9 return struct.unpack("i",base64.decodestring(s))[0] | |
| 10 | |
| 11 class Timestamped: | |
| 12 def check(self): | |
| 13 try: | |
| 14 created = unpack_timestamp(self.form['opaque'].value) | |
| 15 except KeyError: | |
| 16 raise FormError, "somebody tampered with the form" | |
| 17 if time.time() - created < 4: | |
| 18 raise FormError, "responding to the form too quickly" | |
| 19 return True | |
| 20 | |
| 21 class TimestampedRegister(Timestamped, RegisterAction): | |
| 22 def permission(self): | |
| 23 self.check() | |
| 24 RegisterAction.permission(self) | |
| 25 | |
| 26 def init(instance): | |
| 27 instance.registerUtil('timestamp', timestamp) | |
| 28 instance.registerAction('register', TimestampedRegister) |