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meshchatx/src/backend/csrf.py 4bd787ccd70a459a02eececca3f942f0e64ec4ce (4bd787cc) Text, 1.01 KB
T8b949e# SPDX-License-Identifier: 0BSD
T8b949e"""CSRF token helpers for cookie-authenticated API requests."""
Tff7b72from T7ee787__future__ Tff7b72import Te6edf3annotations
Tff7b72import T7ee787secrets
Te6edf3CSRF_HEADER Tff7b72= Ta5d6ff"Ta5d6ffX-CSRF-TokenTa5d6ff"
Te6edf3CSRF_SESSION_KEY Tff7b72= Ta5d6ff"Ta5d6ffcsrf_tokenTa5d6ff"
Tff7b72def Td2a8ffnew_csrf_tokenTb4b4b4(Tb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:
Tff7b72return Te6edf3secretsTff7b72.Td2a8fftoken_urlsafeTb4b4b4(T79c0ff32Tb4b4b4)
Tff7b72def Td2a8ffensure_session_csrf_tokenTb4b4b4(Te6edf3sessionTb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:
Te6edf3token Tff7b72= Te6edf3sessionTff7b72.Td2a8ffgetTb4b4b4(Te6edf3CSRF_SESSION_KEYTb4b4b4)
Tff7b72if Tff7b72not Te6edf3token Tff7b72or Tff7b72not Tffa657isinstanceTb4b4b4(Te6edf3tokenTb4b4b4, Tffa657strTb4b4b4)Tb4b4b4:
Te6edf3token Tff7b72= Te6edf3new_csrf_tokenTb4b4b4(Tb4b4b4)
Te6edf3sessionTb4b4b4[Te6edf3CSRF_SESSION_KEYTb4b4b4] Tff7b72= Te6edf3token
Tff7b72return Te6edf3token
Tff7b72def Td2a8ffrotate_session_csrf_tokenTb4b4b4(Te6edf3sessionTb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:
Te6edf3token Tff7b72= Te6edf3new_csrf_tokenTb4b4b4(Tb4b4b4)
Te6edf3sessionTb4b4b4[Te6edf3CSRF_SESSION_KEYTb4b4b4] Tff7b72= Te6edf3token
Tff7b72return Te6edf3token
Tff7b72def Td2a8ffvalidate_csrf_headerTb4b4b4(Te6edf3requestTb4b4b4, Te6edf3sessionTb4b4b4) Tff7b72-Tff7b72> Tffa657boolTb4b4b4:
Te6edf3expected Tff7b72= Te6edf3sessionTff7b72.Td2a8ffgetTb4b4b4(Te6edf3CSRF_SESSION_KEYTb4b4b4)
Tff7b72if Tff7b72not Te6edf3expected Tff7b72or Tff7b72not Tffa657isinstanceTb4b4b4(Te6edf3expectedTb4b4b4, Tffa657strTb4b4b4)Tb4b4b4:
Tff7b72return Tff7b72False
Te6edf3provided Tff7b72= Te6edf3requestTff7b72.Td2a8ffheadersTff7b72.Td2a8ffgetTb4b4b4(Te6edf3CSRF_HEADERTb4b4b4, Ta5d6ff"Ta5d6ff"Tb4b4b4)
Tff7b72if Tff7b72not Te6edf3provided Tff7b72or Tff7b72not Tffa657isinstanceTb4b4b4(Te6edf3providedTb4b4b4, Tffa657strTb4b4b4)Tb4b4b4:
Tff7b72return Tff7b72False
Tff7b72return Te6edf3secretsTff7b72.Td2a8ffcompare_digestTb4b4b4(Te6edf3providedTff7b72.Td2a8ffstripTb4b4b4(Tb4b4b4)Tb4b4b4, Te6edf3expectedTff7b72.Td2a8ffstripTb4b4b4(Tb4b4b4)Tb4b4b4)
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