/usr/lib/python2.7/dist-packages/cherrypy/lib/auth_basic.py is in python-cherrypy3 8.9.1-2.
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# -*- coding: utf-8 -*-
# vim:ts=4:sw=4:expandtab:fileencoding=utf-8
import binascii
import cherrypy
from cherrypy._cpcompat import base64_decode
__doc__ = """This module provides a CherryPy 3.x tool which implements
the server-side of HTTP Basic Access Authentication, as described in
:rfc:`2617`.
Example usage, using the built-in checkpassword_dict function which uses a dict
as the credentials store::
userpassdict = {'bird' : 'bebop', 'ornette' : 'wayout'}
checkpassword = cherrypy.lib.auth_basic.checkpassword_dict(userpassdict)
basic_auth = {'tools.auth_basic.on': True,
'tools.auth_basic.realm': 'earth',
'tools.auth_basic.checkpassword': checkpassword,
}
app_config = { '/' : basic_auth }
"""
__author__ = 'visteya'
__date__ = 'April 2009'
def checkpassword_dict(user_password_dict):
"""Returns a checkpassword function which checks credentials
against a dictionary of the form: {username : password}.
If you want a simple dictionary-based authentication scheme, use
checkpassword_dict(my_credentials_dict) as the value for the
checkpassword argument to basic_auth().
"""
def checkpassword(realm, user, password):
p = user_password_dict.get(user)
return p and p == password or False
return checkpassword
def basic_auth(realm, checkpassword, debug=False):
"""A CherryPy tool which hooks at before_handler to perform
HTTP Basic Access Authentication, as specified in :rfc:`2617`.
If the request has an 'authorization' header with a 'Basic' scheme, this
tool attempts to authenticate the credentials supplied in that header. If
the request has no 'authorization' header, or if it does but the scheme is
not 'Basic', or if authentication fails, the tool sends a 401 response with
a 'WWW-Authenticate' Basic header.
realm
A string containing the authentication realm.
checkpassword
A callable which checks the authentication credentials.
Its signature is checkpassword(realm, username, password). where
username and password are the values obtained from the request's
'authorization' header. If authentication succeeds, checkpassword
returns True, else it returns False.
"""
if '"' in realm:
raise ValueError('Realm cannot contain the " (quote) character.')
request = cherrypy.serving.request
auth_header = request.headers.get('authorization')
if auth_header is not None:
# split() error, base64.decodestring() error
with cherrypy.HTTPError.handle((ValueError, binascii.Error), 400, 'Bad Request'):
scheme, params = auth_header.split(' ', 1)
if scheme.lower() == 'basic':
username, password = base64_decode(params).split(':', 1)
if checkpassword(realm, username, password):
if debug:
cherrypy.log('Auth succeeded', 'TOOLS.AUTH_BASIC')
request.login = username
return # successful authentication
# Respond with 401 status and a WWW-Authenticate header
cherrypy.serving.response.headers[
'www-authenticate'] = 'Basic realm="%s"' % realm
raise cherrypy.HTTPError(
401, 'You are not authorized to access that resource')
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