wsgitools.digest

Module digest

Classes

AuthenticationRequired
Internal Exception class that is thrown inside AuthDigestMiddleware, but not visible to other code.

AuthTokenGenerator
Generates authentification tokens for AuthDigestMiddleware.

NonceStoreBase
Nonce storage interface.

StatelessNonceStore
This is a stateless nonce storage that cannot check the usage count for a nonce and thus cannot protect against replay attacks.

MemoryNonceStore
Simple in-memory mechanism to store nonces.

LazyDBAPI2Opener
Connects to database on first request.

DBAPI2NonceStore
A dbapi2-backed nonce store implementation suitable for usage with forking wsgi servers such as scgi.forkpool.

AuthDigestMiddleware
Middleware partly implementing RFC2617.

Functions

[hide private]

gen_rand_str(bytes=33)
Generates a string of random base64 characters.

source code

parse_digest_response(data, ret=None)
internal

source code

str

format_time(seconds)
internal method formatting a unix time to a fixed-length string

source code

Variables

[hide private]

sysrand = random.SystemRandom()

Function Details

[hide private]

gen_rand_str(bytes=33)

source code

Generates a string of random base64 characters.

Parameters:

bytes - is the number of random 8bit values to be used
```
>>> gen_rand_str() != gen_rand_str()
True
```

parse_digest_response(data, ret=None)

source code

internal

Raises:

ValueError -

>>> parse_digest_response('foo=bar')
{'foo': 'bar'}
>>> parse_digest_response('foo="bar"')
{'foo': 'bar'}
>>> sorted(parse_digest_response('foo="bar=qux",spam=egg').items())
[('foo', 'bar=qux'), ('spam', 'egg')]
>>> try:
...     parse_digest_response('spam')
... except ValueError:
...     print("ValueError")
ValueError
>>> try:
...     parse_digest_response('spam="egg"error')
... except ValueError:
...     print("ValueError")
ValueError

format_time(seconds)

source code

internal method formatting a unix time to a fixed-length string

Parameters:

seconds (float)

Returns: str