def normalizeURL(url):
"""Normalize a URL, converting normalization failures to
DiscoveryFailure"""
try:
normalized = urinorm.urinorm(url)
except ValueError, why:
raise DiscoveryFailure('Normalizing identifier: %s' % (why[0], ), None)
def getServiceEndpoints(input_url, flt=None):
"""Perform the Yadis protocol on the input URL and return an
iterable of resulting endpoint objects.
@param flt: A filter object or something that is convertable to
a filter object (using mkFilter) that will be used to generate
endpoint objects. This defaults to generating BasicEndpoint
objects.
@param input_url: The URL on which to perform the Yadis protocol
@return: The normalized identity URL and an iterable of endpoint
objects generated by the filter function.
@rtype: (six.text_type, [endpoint])
@raises DiscoveryFailure: when Yadis fails to obtain an XRDS document.
"""
result = discover(input_url)
try:
endpoints = applyFilter(result.normalized_uri, result.response_text,
flt)
except XRDSError as err:
raise DiscoveryFailure(six.text_type(err), None)
return (result.normalized_uri, endpoints)
def normalizeURL(url):
"""Normalize a URL, converting normalization failures to
DiscoveryFailure"""
try:
normalized = urinorm.urinorm(url)
except ValueError as why:
raise DiscoveryFailure('Normalizing identifier: %s' % (why[0],), None)
else:
return urllib.parse.urldefrag(normalized)[0]
def discoverNoYadis(uri):
http_resp = fetchers.fetch(uri)
if http_resp.status not in (200, 206):
raise DiscoveryFailure(
'HTTP Response status from identity URL host is not 200. '
'Got status %r' % (http_resp.status,), http_resp)
claimed_id = http_resp.final_url
openid_services = OpenIDServiceEndpoint.fromHTML(
claimed_id, http_resp.body)
return claimed_id, openid_services
def findOPLocalIdentifier(service_element, type_uris):
"""Find the OP-Local Identifier for this xrd:Service element.
This considers openid:Delegate to be a synonym for xrd:LocalID if
both OpenID 1.X and OpenID 2.0 types are present. If only OpenID
1.X is present, it returns the value of openid:Delegate. If only
OpenID 2.0 is present, it returns the value of xrd:LocalID. If
there is more than one LocalID tag and the values are different,
it raises a DiscoveryFailure. This is also triggered when the
xrd:LocalID and openid:Delegate tags are different.
@param service_element: The xrd:Service element
@type service_element: ElementTree.Node
@param type_uris: The xrd:Type values present in this service
element. This function could extract them, but higher level
code needs to do that anyway.
@type type_uris: List[six.text_type], six.binary_type is deprecated
@raises DiscoveryFailure: when discovery fails.
@returns: The OP-Local Identifier for this service element, if one
is present, or None otherwise.
@rtype: six.text_type or NoneType
"""
# XXX: Test this function on its own!
type_uris = [
string_to_text(
u,
"Binary values for text_uris are deprecated. Use text input instead."
) for u in type_uris
]
# Build the list of tags that could contain the OP-Local Identifier
local_id_tags = []
if (OPENID_1_1_TYPE in type_uris or OPENID_1_0_TYPE in type_uris):
local_id_tags.append(nsTag(OPENID_1_0_NS, 'Delegate'))
if OPENID_2_0_TYPE in type_uris:
local_id_tags.append(nsTag(XRD_NS_2_0, 'LocalID'))
# Walk through all the matching tags and make sure that they all
# have the same value
local_id = None
for local_id_tag in local_id_tags:
for local_id_element in service_element.findall(local_id_tag):
if local_id is None:
local_id = local_id_element.text
elif local_id != local_id_element.text:
format = 'More than one %r tag found in one service element'
message = format % (local_id_tag, )
raise DiscoveryFailure(message, None)
return local_id
def discoverURI(uri):
parsed = urllib.parse.urlparse(uri)
if parsed[0] and parsed[1]:
if parsed[0] not in ['http', 'https']:
raise DiscoveryFailure('URI scheme is not HTTP or HTTPS', None)
else:
uri = 'http://' + uri
uri = normalizeURL(uri)
claimed_id, openid_services = discoverYadis(uri)
claimed_id = normalizeURL(claimed_id)
return claimed_id, openid_services
def begin(self, url):
raise DiscoveryFailure(
'HTTP Response status from identity URL host is not 200. '
'Got status 500', FakeHTTPResponse)
