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## $Id: nnrpd_auth_wrapper.py 8251 2008-12-23 12:22:03Z iulius $
##
## Example wrapper for support of old Python authentication scripts,
## by Erik Klavon.
##
## This file contains a sample Python script which can be used to
## duplicate the behaviour of the old nnrppythonauth functionality.
## This script only supports authentication.
##
## How to use this wrapper:
## - insert your authentication class into this file;
## - rename your authentication class OLDAUTH.
##
## See the INN Python Filtering and Authentication Hooks documentation
## for more information.
## The use of this file is *discouraged*.
## Old AUTH class.
## Insert your old auth class here.
## Do not include the code which sets the hook.
## Wrapper AUTH class. It creates an instance of the old class and
## calls its methods. Arguments and return values are munged as
## needed to fit the new way of doing things.
class MYAUTH:
"""Provide auth callbacks to nnrpd."""
def authen_init(self):
self.old = OLDAUTH()
def authenticate(self, attributes):
# Python 3.x uses memoryview(b'authinfo') because buffers
# do not exist any longer. Note that the argument is
# a bytes object.
# attributes['type'] = memoryview(b'authinfo')
attributes['type'] = buffer('authinfo')
perm = (self.old).authenticate(attributes)
err_str = "No error"
if perm[0] == 481:
err_str = "Python authentication error!"
return (perm[0], err_str)
def authen_close(self):
(self.old).close()
## The rest is used to hook up the auth module on nnrpd. It is unlikely
## you will ever need to modify this.
## Import functions exposed by nnrpd. This import must succeed, or nothing
## will work!
from nnrpd import *
## Create a class instance.
myauth = MYAUTH()
## ...and try to hook up on nnrpd. This would make auth object methods visible
## to nnrpd.
try:
set_auth_hook(myauth)
syslog('notice', "authentication module successfully hooked into nnrpd")
except Exception, errmsg: # Syntax for Python 2.x.
#except Exception as errmsg: # Syntax for Python 3.x.
syslog('error', "Cannot obtain nnrpd hook for authentication method: %s" % errmsg[0])
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