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annotate roundup/cgi/timestamp.py @ 8019:16cc72cd9c17

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fix: Send Vary: Accept-Encoding on any data that could be compressed This allows upstream caches to return the correct data even when compression is not in use. It is not sent if the content would never be compressed. I.E. size < 100 bytes, dynamic compression disabled, file would not benefit from compression (img/jpeg, img/png). Fix setVary to add header to vary list only if it's not already there. Found by redbot.org testing. References: https://www.stackpath.com/blog/accept-encoding-vary-important/
author John Rouillard <rouilj@ieee.org>
date Sun, 02 Jun 2024 18:22:53 -0400
parents 216662fbaaee
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 '''Set of functions of adding/checking timestamp to be used to limit
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2 form submission for cgi actions.
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3 '''
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4
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5 import base64
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6 import binascii
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7 import struct
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8 import time
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9
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10 from roundup.cgi.exceptions import FormError
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11 from roundup.i18n import _
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12 from roundup.anypy.strings import b2s, s2b
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15 def pack_timestamp():
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16 return b2s(base64.b64encode(struct.pack("i", int(time.time()))).strip())
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17
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18
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19 def unpack_timestamp(s):
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20 try:
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21 timestamp = struct.unpack("i", base64.b64decode(s2b(s)))[0]
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22 except (struct.error, binascii.Error, TypeError):
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23 raise FormError(_("Form is corrupted."))
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24 return timestamp
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27 class Timestamped:
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28 def timecheck(self, field, delay):
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29 try:
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30 created = unpack_timestamp(self.form[field].value)
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31 except KeyError:
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32 raise FormError(_("Form is corrupted, missing: %s.") % field)
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33 if time.time() - created < delay:
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34 raise FormError(_("Responding to form too quickly."))
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35 return True
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