This file is indexed.

/usr/share/pyshared/openid/extensions/sreg.py is in python-openid 2.2.5-3ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
"""Simple registration request and response parsing and object representation

This module contains objects representing simple registration requests
and responses that can be used with both OpenID relying parties and
OpenID providers.

  1. The relying party creates a request object and adds it to the
     C{L{AuthRequest<openid.consumer.consumer.AuthRequest>}} object
     before making the C{checkid_} request to the OpenID provider::

      auth_request.addExtension(SRegRequest(required=['email']))

  2. The OpenID provider extracts the simple registration request from
     the OpenID request using C{L{SRegRequest.fromOpenIDRequest}},
     gets the user's approval and data, creates a C{L{SRegResponse}}
     object and adds it to the C{id_res} response::

      sreg_req = SRegRequest.fromOpenIDRequest(checkid_request)
      # [ get the user's approval and data, informing the user that
      #   the fields in sreg_response were requested ]
      sreg_resp = SRegResponse.extractResponse(sreg_req, user_data)
      sreg_resp.toMessage(openid_response.fields)

  3. The relying party uses C{L{SRegResponse.fromSuccessResponse}} to
     extract the data from the OpenID response::

      sreg_resp = SRegResponse.fromSuccessResponse(success_response)

@since: 2.0

@var sreg_data_fields: The names of the data fields that are listed in
    the sreg spec, and a description of them in English

@var sreg_uri: The preferred URI to use for the simple registration
    namespace and XRD Type value
"""

from openid.message import registerNamespaceAlias, \
     NamespaceAliasRegistrationError
from openid.extension import Extension
from openid import oidutil

try:
    basestring #pylint:disable-msg=W0104
except NameError:
    # For Python 2.2
    basestring = (str, unicode) #pylint:disable-msg=W0622

__all__ = [
    'SRegRequest',
    'SRegResponse',
    'data_fields',
    'ns_uri',
    'ns_uri_1_0',
    'ns_uri_1_1',
    'supportsSReg',
    ]

# The data fields that are listed in the sreg spec
data_fields = {
    'fullname':'Full Name',
    'nickname':'Nickname',
    'dob':'Date of Birth',
    'email':'E-mail Address',
    'gender':'Gender',
    'postcode':'Postal Code',
    'country':'Country',
    'language':'Language',
    'timezone':'Time Zone',
    }

def checkFieldName(field_name):
    """Check to see that the given value is a valid simple
    registration data field name.

    @raise ValueError: if the field name is not a valid simple
        registration data field name
    """
    if field_name not in data_fields:
        raise ValueError('%r is not a defined simple registration field' %
                         (field_name,))

# URI used in the wild for Yadis documents advertising simple
# registration support
ns_uri_1_0 = 'http://openid.net/sreg/1.0'

# URI in the draft specification for simple registration 1.1
# <http://openid.net/specs/openid-simple-registration-extension-1_1-01.html>
ns_uri_1_1 = 'http://openid.net/extensions/sreg/1.1'

# This attribute will always hold the preferred URI to use when adding
# sreg support to an XRDS file or in an OpenID namespace declaration.
ns_uri = ns_uri_1_1

try:
    registerNamespaceAlias(ns_uri_1_1, 'sreg')
except NamespaceAliasRegistrationError, e:
    oidutil.log('registerNamespaceAlias(%r, %r) failed: %s' % (ns_uri_1_1,
                                                               'sreg', str(e),))

def supportsSReg(endpoint):
    """Does the given endpoint advertise support for simple
    registration?

    @param endpoint: The endpoint object as returned by OpenID discovery
    @type endpoint: openid.consumer.discover.OpenIDEndpoint

    @returns: Whether an sreg type was advertised by the endpoint
    @rtype: bool
    """
    return (endpoint.usesExtension(ns_uri_1_1) or
            endpoint.usesExtension(ns_uri_1_0))

class SRegNamespaceError(ValueError):
    """The simple registration namespace was not found and could not
    be created using the expected name (there's another extension
    using the name 'sreg')

    This is not I{illegal}, for OpenID 2, although it probably
    indicates a problem, since it's not expected that other extensions
    will re-use the alias that is in use for OpenID 1.

    If this is an OpenID 1 request, then there is no recourse. This
    should not happen unless some code has modified the namespaces for
    the message that is being processed.
    """

def getSRegNS(message):
    """Extract the simple registration namespace URI from the given
    OpenID message. Handles OpenID 1 and 2, as well as both sreg
    namespace URIs found in the wild, as well as missing namespace
    definitions (for OpenID 1)

    @param message: The OpenID message from which to parse simple
        registration fields. This may be a request or response message.
    @type message: C{L{openid.message.Message}}

    @returns: the sreg namespace URI for the supplied message. The
        message may be modified to define a simple registration
        namespace.
    @rtype: C{str}

    @raise ValueError: when using OpenID 1 if the message defines
        the 'sreg' alias to be something other than a simple
        registration type.
    """
    # See if there exists an alias for one of the two defined simple
    # registration types.
    for sreg_ns_uri in [ns_uri_1_1, ns_uri_1_0]:
        alias = message.namespaces.getAlias(sreg_ns_uri)
        if alias is not None:
            break
    else:
        # There is no alias for either of the types, so try to add
        # one. We default to using the modern value (1.1)
        sreg_ns_uri = ns_uri_1_1
        try:
            message.namespaces.addAlias(ns_uri_1_1, 'sreg')
        except KeyError, why:
            # An alias for the string 'sreg' already exists, but it's
            # defined for something other than simple registration
            raise SRegNamespaceError(why[0])

    # we know that sreg_ns_uri defined, because it's defined in the
    # else clause of the loop as well, so disable the warning
    return sreg_ns_uri #pylint:disable-msg=W0631

class SRegRequest(Extension):
    """An object to hold the state of a simple registration request.

    @ivar required: A list of the required fields in this simple
        registration request
    @type required: [str]

    @ivar optional: A list of the optional fields in this simple
        registration request
    @type optional: [str]

    @ivar policy_url: The policy URL that was provided with the request
    @type policy_url: str or NoneType

    @group Consumer: requestField, requestFields, getExtensionArgs, addToOpenIDRequest
    @group Server: fromOpenIDRequest, parseExtensionArgs
    """

    ns_alias = 'sreg'

    def __init__(self, required=None, optional=None, policy_url=None,
                 sreg_ns_uri=ns_uri):
        """Initialize an empty simple registration request"""
        Extension.__init__(self)
        self.required = []
        self.optional = []
        self.policy_url = policy_url
        self.ns_uri = sreg_ns_uri

        if required:
            self.requestFields(required, required=True, strict=True)

        if optional:
            self.requestFields(optional, required=False, strict=True)

    # Assign getSRegNS to a static method so that it can be
    # overridden for testing.
    _getSRegNS = staticmethod(getSRegNS)

    def fromOpenIDRequest(cls, request):
        """Create a simple registration request that contains the
        fields that were requested in the OpenID request with the
        given arguments

        @param request: The OpenID request
        @type request: openid.server.CheckIDRequest

        @returns: The newly created simple registration request
        @rtype: C{L{SRegRequest}}
        """
        self = cls()

        # Since we're going to mess with namespace URI mapping, don't
        # mutate the object that was passed in.
        message = request.message.copy()

        self.ns_uri = self._getSRegNS(message)
        args = message.getArgs(self.ns_uri)
        self.parseExtensionArgs(args)

        return self

    fromOpenIDRequest = classmethod(fromOpenIDRequest)

    def parseExtensionArgs(self, args, strict=False):
        """Parse the unqualified simple registration request
        parameters and add them to this object.

        This method is essentially the inverse of
        C{L{getExtensionArgs}}. This method restores the serialized simple
        registration request fields.

        If you are extracting arguments from a standard OpenID
        checkid_* request, you probably want to use C{L{fromOpenIDRequest}},
        which will extract the sreg namespace and arguments from the
        OpenID request. This method is intended for cases where the
        OpenID server needs more control over how the arguments are
        parsed than that method provides.

        >>> args = message.getArgs(ns_uri)
        >>> request.parseExtensionArgs(args)

        @param args: The unqualified simple registration arguments
        @type args: {str:str}

        @param strict: Whether requests with fields that are not
            defined in the simple registration specification should be
            tolerated (and ignored)
        @type strict: bool

        @returns: None; updates this object
        """
        for list_name in ['required', 'optional']:
            required = (list_name == 'required')
            items = args.get(list_name)
            if items:
                for field_name in items.split(','):
                    try:
                        self.requestField(field_name, required, strict)
                    except ValueError:
                        if strict:
                            raise

        self.policy_url = args.get('policy_url')

    def allRequestedFields(self):
        """A list of all of the simple registration fields that were
        requested, whether they were required or optional.

        @rtype: [str]
        """
        return self.required + self.optional

    def wereFieldsRequested(self):
        """Have any simple registration fields been requested?

        @rtype: bool
        """
        return bool(self.allRequestedFields())

    def __contains__(self, field_name):
        """Was this field in the request?"""
        return (field_name in self.required or
                field_name in self.optional)

    def requestField(self, field_name, required=False, strict=False):
        """Request the specified field from the OpenID user

        @param field_name: the unqualified simple registration field name
        @type field_name: str

        @param required: whether the given field should be presented
            to the user as being a required to successfully complete
            the request

        @param strict: whether to raise an exception when a field is
            added to a request more than once

        @raise ValueError: when the field requested is not a simple
            registration field or strict is set and the field was
            requested more than once
        """
        checkFieldName(field_name)

        if strict:
            if field_name in self.required or field_name in self.optional:
                raise ValueError('That field has already been requested')
        else:
            if field_name in self.required:
                return

            if field_name in self.optional:
                if required:
                    self.optional.remove(field_name)
                else:
                    return

        if required:
            self.required.append(field_name)
        else:
            self.optional.append(field_name)

    def requestFields(self, field_names, required=False, strict=False):
        """Add the given list of fields to the request

        @param field_names: The simple registration data fields to request
        @type field_names: [str]

        @param required: Whether these values should be presented to
            the user as required

        @param strict: whether to raise an exception when a field is
            added to a request more than once

        @raise ValueError: when a field requested is not a simple
            registration field or strict is set and a field was
            requested more than once
        """
        if isinstance(field_names, basestring):
            raise TypeError('Fields should be passed as a list of '
                            'strings (not %r)' % (type(field_names),))

        for field_name in field_names:
            self.requestField(field_name, required, strict=strict)

    def getExtensionArgs(self):
        """Get a dictionary of unqualified simple registration
        arguments representing this request.

        This method is essentially the inverse of
        C{L{parseExtensionArgs}}. This method serializes the simple
        registration request fields.

        @rtype: {str:str}
        """
        args = {}

        if self.required:
            args['required'] = ','.join(self.required)

        if self.optional:
            args['optional'] = ','.join(self.optional)

        if self.policy_url:
            args['policy_url'] = self.policy_url

        return args

class SRegResponse(Extension):
    """Represents the data returned in a simple registration response
    inside of an OpenID C{id_res} response. This object will be
    created by the OpenID server, added to the C{id_res} response
    object, and then extracted from the C{id_res} message by the
    Consumer.

    @ivar data: The simple registration data, keyed by the unqualified
        simple registration name of the field (i.e. nickname is keyed
        by C{'nickname'})

    @ivar ns_uri: The URI under which the simple registration data was
        stored in the response message.

    @group Server: extractResponse
    @group Consumer: fromSuccessResponse
    @group Read-only dictionary interface: keys, iterkeys, items, iteritems,
        __iter__, get, __getitem__, keys, has_key
    """

    ns_alias = 'sreg'

    def __init__(self, data=None, sreg_ns_uri=ns_uri):
        Extension.__init__(self)
        if data is None:
            self.data = {}
        else:
            self.data = data

        self.ns_uri = sreg_ns_uri

    def extractResponse(cls, request, data):
        """Take a C{L{SRegRequest}} and a dictionary of simple
        registration values and create a C{L{SRegResponse}}
        object containing that data.

        @param request: The simple registration request object
        @type request: SRegRequest

        @param data: The simple registration data for this
            response, as a dictionary from unqualified simple
            registration field name to string (unicode) value. For
            instance, the nickname should be stored under the key
            'nickname'.
        @type data: {str:str}

        @returns: a simple registration response object
        @rtype: SRegResponse
        """
        self = cls()
        self.ns_uri = request.ns_uri
        for field in request.allRequestedFields():
            value = data.get(field)
            if value is not None:
                self.data[field] = value
        return self

    extractResponse = classmethod(extractResponse)

    # Assign getSRegArgs to a static method so that it can be
    # overridden for testing
    _getSRegNS = staticmethod(getSRegNS)

    def fromSuccessResponse(cls, success_response, signed_only=True):
        """Create a C{L{SRegResponse}} 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}}

        @param signed_only: Whether to process only data that was
            signed in the id_res message from the server.
        @type signed_only: bool

        @rtype: SRegResponse
        @returns: A simple registration response containing the data
            that was supplied with the C{id_res} response.
        """
        self = cls()
        self.ns_uri = self._getSRegNS(success_response.message)
        if signed_only:
            args = success_response.getSignedNS(self.ns_uri)
        else:
            args = success_response.message.getArgs(self.ns_uri)

        if not args:
            return None

        for field_name in data_fields:
            if field_name in args:
                self.data[field_name] = args[field_name]

        return self

    fromSuccessResponse = classmethod(fromSuccessResponse)

    def getExtensionArgs(self):
        """Get the fields to put in the simple registration namespace
        when adding them to an id_res message.

        @see: openid.extension
        """
        return self.data

    # Read-only dictionary interface
    def get(self, field_name, default=None):
        """Like dict.get, except that it checks that the field name is
        defined by the simple registration specification"""
        checkFieldName(field_name)
        return self.data.get(field_name, default)

    def items(self):
        """All of the data values in this simple registration response
        """
        return self.data.items()

    def iteritems(self):
        return self.data.iteritems()

    def keys(self):
        return self.data.keys()

    def iterkeys(self):
        return self.data.iterkeys()

    def has_key(self, key):
        return key in self

    def __contains__(self, field_name):
        checkFieldName(field_name)
        return field_name in self.data

    def __iter__(self):
        return iter(self.data)

    def __getitem__(self, field_name):
        checkFieldName(field_name)
        return self.data[field_name]

    def __nonzero__(self):
        return bool(self.data)