/usr/lib/python2.7/dist-packages/openid/extensions/draft/pape2.py is in python-openid 2.2.5-6.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 | """An implementation of the OpenID Provider Authentication Policy
Extension 1.0
@see: http://openid.net/developers/specs/
@since: 2.1.0
"""
__all__ = [
'Request',
'Response',
'ns_uri',
'AUTH_PHISHING_RESISTANT',
'AUTH_MULTI_FACTOR',
'AUTH_MULTI_FACTOR_PHYSICAL',
]
from openid.extension import Extension
import re
ns_uri = "http://specs.openid.net/extensions/pape/1.0"
AUTH_MULTI_FACTOR_PHYSICAL = \
'http://schemas.openid.net/pape/policies/2007/06/multi-factor-physical'
AUTH_MULTI_FACTOR = \
'http://schemas.openid.net/pape/policies/2007/06/multi-factor'
AUTH_PHISHING_RESISTANT = \
'http://schemas.openid.net/pape/policies/2007/06/phishing-resistant'
TIME_VALIDATOR = re.compile('^\d\d\d\d-\d\d-\d\dT\d\d:\d\d:\d\dZ$')
class Request(Extension):
"""A Provider Authentication Policy request, sent from a relying
party to a provider
@ivar preferred_auth_policies: The authentication policies that
the relying party prefers
@type preferred_auth_policies: [str]
@ivar max_auth_age: The maximum time, in seconds, that the relying
party wants to allow to have elapsed before the user must
re-authenticate
@type max_auth_age: int or NoneType
"""
ns_alias = 'pape'
def __init__(self, preferred_auth_policies=None, max_auth_age=None):
super(Request, self).__init__()
if not preferred_auth_policies:
preferred_auth_policies = []
self.preferred_auth_policies = preferred_auth_policies
self.max_auth_age = max_auth_age
def __nonzero__(self):
return bool(self.preferred_auth_policies or
self.max_auth_age is not None)
def addPolicyURI(self, policy_uri):
"""Add an acceptable authentication policy URI to this request
This method is intended to be used by the relying party to add
acceptable authentication types to the request.
@param policy_uri: The identifier for the preferred type of
authentication.
@see: http://openid.net/specs/openid-provider-authentication-policy-extension-1_0-01.html#auth_policies
"""
if policy_uri not in self.preferred_auth_policies:
self.preferred_auth_policies.append(policy_uri)
def getExtensionArgs(self):
"""@see: C{L{Extension.getExtensionArgs}}
"""
ns_args = {
'preferred_auth_policies':' '.join(self.preferred_auth_policies)
}
if self.max_auth_age is not None:
ns_args['max_auth_age'] = str(self.max_auth_age)
return ns_args
def fromOpenIDRequest(cls, request):
"""Instantiate a Request object from the arguments in a
C{checkid_*} OpenID message
"""
self = cls()
args = request.message.getArgs(self.ns_uri)
if args == {}:
return None
self.parseExtensionArgs(args)
return self
fromOpenIDRequest = classmethod(fromOpenIDRequest)
def parseExtensionArgs(self, args):
"""Set the state of this request to be that expressed in these
PAPE arguments
@param args: The PAPE arguments without a namespace
@rtype: None
@raises ValueError: When the max_auth_age is not parseable as
an integer
"""
# preferred_auth_policies is a space-separated list of policy URIs
self.preferred_auth_policies = []
policies_str = args.get('preferred_auth_policies')
if policies_str:
for uri in policies_str.split(' '):
if uri not in self.preferred_auth_policies:
self.preferred_auth_policies.append(uri)
# max_auth_age is base-10 integer number of seconds
max_auth_age_str = args.get('max_auth_age')
self.max_auth_age = None
if max_auth_age_str:
try:
self.max_auth_age = int(max_auth_age_str)
except ValueError:
pass
def preferredTypes(self, supported_types):
"""Given a list of authentication policy URIs that a provider
supports, this method returns the subsequence of those types
that are preferred by the relying party.
@param supported_types: A sequence of authentication policy
type URIs that are supported by a provider
@returns: The sub-sequence of the supported types that are
preferred by the relying party. This list will be ordered
in the order that the types appear in the supported_types
sequence, and may be empty if the provider does not prefer
any of the supported authentication types.
@returntype: [str]
"""
return filter(self.preferred_auth_policies.__contains__,
supported_types)
Request.ns_uri = ns_uri
class Response(Extension):
"""A Provider Authentication Policy response, sent from a provider
to a relying party
"""
ns_alias = 'pape'
def __init__(self, auth_policies=None, auth_time=None,
nist_auth_level=None):
super(Response, self).__init__()
if auth_policies:
self.auth_policies = auth_policies
else:
self.auth_policies = []
self.auth_time = auth_time
self.nist_auth_level = nist_auth_level
def addPolicyURI(self, policy_uri):
"""Add a authentication policy to this response
This method is intended to be used by the provider to add a
policy that the provider conformed to when authenticating the user.
@param policy_uri: The identifier for the preferred type of
authentication.
@see: http://openid.net/specs/openid-provider-authentication-policy-extension-1_0-01.html#auth_policies
"""
if policy_uri not in self.auth_policies:
self.auth_policies.append(policy_uri)
def fromSuccessResponse(cls, success_response):
"""Create a C{L{Response}} object from a successful OpenID
library response
(C{L{openid.consumer.consumer.SuccessResponse}}) response
message
@param success_response: A SuccessResponse from consumer.complete()
@type success_response: C{L{openid.consumer.consumer.SuccessResponse}}
@rtype: Response or None
@returns: A provider authentication policy response from the
data that was supplied with the C{id_res} response or None
if the provider sent no signed PAPE response arguments.
"""
self = cls()
# PAPE requires that the args be signed.
args = success_response.getSignedNS(self.ns_uri)
# Only try to construct a PAPE response if the arguments were
# signed in the OpenID response. If not, return None.
if args is not None:
self.parseExtensionArgs(args)
return self
else:
return None
def parseExtensionArgs(self, args, strict=False):
"""Parse the provider authentication policy arguments into the
internal state of this object
@param args: unqualified provider authentication policy
arguments
@param strict: Whether to raise an exception when bad data is
encountered
@returns: None. The data is parsed into the internal fields of
this object.
"""
policies_str = args.get('auth_policies')
if policies_str and policies_str != 'none':
self.auth_policies = policies_str.split(' ')
nist_level_str = args.get('nist_auth_level')
if nist_level_str:
try:
nist_level = int(nist_level_str)
except ValueError:
if strict:
raise ValueError('nist_auth_level must be an integer between '
'zero and four, inclusive')
else:
self.nist_auth_level = None
else:
if 0 <= nist_level < 5:
self.nist_auth_level = nist_level
auth_time = args.get('auth_time')
if auth_time:
if TIME_VALIDATOR.match(auth_time):
self.auth_time = auth_time
elif strict:
raise ValueError("auth_time must be in RFC3339 format")
fromSuccessResponse = classmethod(fromSuccessResponse)
def getExtensionArgs(self):
"""@see: C{L{Extension.getExtensionArgs}}
"""
if len(self.auth_policies) == 0:
ns_args = {
'auth_policies':'none',
}
else:
ns_args = {
'auth_policies':' '.join(self.auth_policies),
}
if self.nist_auth_level is not None:
if self.nist_auth_level not in range(0, 5):
raise ValueError('nist_auth_level must be an integer between '
'zero and four, inclusive')
ns_args['nist_auth_level'] = str(self.nist_auth_level)
if self.auth_time is not None:
if not TIME_VALIDATOR.match(self.auth_time):
raise ValueError('auth_time must be in RFC3339 format')
ns_args['auth_time'] = self.auth_time
return ns_args
Response.ns_uri = ns_uri
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