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annotate website/issues/extensions/timestamp.py @ 4880:ca692423e401

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Different approach to fix XSS in issue2550817 Encapsulate the error/ok message append method as add_ok_message and add_error_message. The new approach escapes the messages when appending -- at a point in the code where we still know where the message comes from. Escaping is the default but can bei turned off. This also fixes issue2550836 where certain messages may contain links. Another advantage of the new fix is that users don't need to change installed trackers and are secure by default.
author Ralf Schlatterbeck <rsc@runtux.com>
date Mon, 31 Mar 2014 18:19:23 +0200
parents c2d0d3e9099d
children 35ea9b1efc14
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4024
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1 import time, struct, base64
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2 from roundup.cgi.actions import RegisterAction
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3 from roundup.cgi.exceptions import *
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4
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5 def timestamp():
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6 return base64.encodestring(struct.pack("i", time.time())).strip()
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7
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8 def unpack_timestamp(s):
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9 return struct.unpack("i",base64.decodestring(s))[0]
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10
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11 class Timestamped:
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12 def check(self):
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13 try:
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14 created = unpack_timestamp(self.form['opaque'].value)
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15 except KeyError:
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16 raise FormError, "somebody tampered with the form"
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17 if time.time() - created < 4:
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18 raise FormError, "responding to the form too quickly"
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19 return True
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20
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21 class TimestampedRegister(Timestamped, RegisterAction):
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22 def permission(self):
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23 self.check()
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24 RegisterAction.permission(self)
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25
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26 def init(instance):
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27 instance.registerUtil('timestamp', timestamp)
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28 instance.registerAction('register', TimestampedRegister)
Roundup Issue Tracker: http://roundup-tracker.org/