Opened 15 years ago
Last modified 15 years ago
#10253 closed
sessions.base.py random.SystemRandom() fails — at Initial Version
| Reported by: | monkut | Owned by: | nobody |
|---|---|---|---|
| Component: | contrib.sessions | Version: | 1.0 |
| Severity: | Keywords: | ||
| Cc: | Triage Stage: | Unreviewed | |
| Has patch: | no | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description
Related to changeset 8340.
# Use the system (hardware-based) random number generator if it exists.
if hasattr(random, 'SystemRandom'):
randrange = random.SystemRandom().randrange
else:
randrange = random.randrange
MAX_SESSION_KEY = 18446744073709551616L # 2 << 63
Platform info:
platform.system()
'SunOS'
platform.version()
'Generic_105181-35'
platform.release()
'5.6'
platform.python_version()
'2.5.2'
Condition in line 17 of base.py, "if hasattr(random, 'SystemRandom'):", evaluates to True, but randrange fails.
hasattr(random, 'SystemRandom')
True
randrange = random.SystemRandom().randrange
randrange(0, MAX_SESSION_KEY)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/apps/public/python_2.5.2/lib/python2.5/random.py", line 188, in randrange
return int(istart + self._randbelow(width))
File "/apps/public/python_2.5.2/lib/python2.5/random.py", line 235, in _randbelow
r = getrandbits(k)
File "/apps/public/python_2.5.2/lib/python2.5/random.py", line 778, in getrandbits
x = long(_hexlify(_urandom(bytes)), 16)
File "/apps/public/python_2.5.2/lib/python2.5/os.py", line 730, in urandom
raise NotImplementedError("/dev/urandom (or equivalent) not found")
NotImplementedError: /dev/urandom (or equivalent) not found
Exception occurs at when attempting to generate a new session key (when trying to access admin).
File "/django/contrib/sessions/backends/base.py", line 142, in _get_new_session_key % (randrange(0, MAX_SESSION_KEY), pid, time.time(),