Mercurial > p > roundup > code
annotate website/issues/extensions/timestamp.py @ 5212:d4cc71beb102
Added support for SameSite cookie option for CSRF prevention
This was an easy addon compared to the complexity of the CSRF nonce
support. It only works in chromium browsers (Chrome, Opera...) at
the moment. But there is recent activity on implementing it in
firefox. Who know when edge/ie will adopt it. So csrf nonce and
header analysis will be needed for a while.
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Sun, 19 Mar 2017 19:01:41 -0400 |
| parents | c2d0d3e9099d |
| children | 35ea9b1efc14 |
| rev | line source |
|---|---|
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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) |