def not_authenticated(response):
response_content = decoded_response(response)
try:
if response.status_code == 401 or json.loads(
response_content)["responseCode"] == 402:
# need to put 'OR' because the HS responseCode is not always received!
return True
except ValueError as e: # If there is no JSON response.
pass
return False
def check_if_username_exists(self, username):
'''
Check if the username handles exists.
:param username: The username, in the form index:prefix/suffix
:raises: :exc:`~pyhandle.handleexceptions.HandleNotFoundException`
:raises: :exc:`~pyhandle.handleexceptions.GenericHandleError`
:return: True. If it does not exist, an exception is raised.
*Note:* Only the existence of the handle is verified. The existence or
validity of the index is not checked, because entries containing
a key are hidden anyway.
'''
LOGGER.debug('check_if_username_exists...')
_, handle = pyhandle.utilhandle.remove_index_from_handle(username)
resp = self.send_handle_get_request(handle)
resp_content = decoded_response(resp)
if pyhandle.hsresponses.does_handle_exist(resp):
handlerecord_json = json.loads(resp_content)
if not handlerecord_json['handle'] == handle:
raise GenericHandleError(
operation='Checking if username exists',
handle=handle,
reponse=resp,
msg=
'The check returned a different handle than was asked for.'
)
return True
elif pyhandle.hsresponses.handle_not_found(resp):
msg = 'The username handle does not exist'
raise HandleNotFoundException(handle=handle,
msg=msg,
response=resp)
else:
op = 'checking if handle exists'
msg = 'Checking if username exists went wrong'
raise GenericHandleError(operation=op,
handle=handle,
response=resp,
msg=msg)
def retrieve_handle_record_json(self, handle):
'''
Retrieve a handle record from the Handle server as a complete nested
dict (including index, ttl, timestamp, ...) for later use.
Note: For retrieving a simple dict with only the keys and values,
please use :meth:`~pyhandle.handleclient.RESTHandleClient.retrieve_handle_record`.
:param handle: The Handle whose record to retrieve.
:raises: :exc:`~pyhandle.handleexceptions.HandleSyntaxError`
:return: The handle record as a nested dict. If the handle does not
exist, returns None.
'''
LOGGER.debug('retrieve_handle_record_json...')
utilhandle.check_handle_syntax(handle)
response = self.__send_handle_get_request(handle)
response_content = decoded_response(response)
if hsresponses.handle_not_found(response):
return None
elif hsresponses.does_handle_exist(response):
handlerecord_json = json.loads(response_content)
if not handlerecord_json['handle'] == handle:
raise GenericHandleError(
operation='retrieving handle record',
handle=handle,
response=response,
custom_message=
'The retrieve returned a different handle than was asked for.'
)
return handlerecord_json
elif hsresponses.is_handle_empty(response):
handlerecord_json = json.loads(response_content)
return handlerecord_json
else:
raise GenericHandleError(operation='retrieving',
handle=handle,
response=response)
def register_handle(self,
handle,
location,
checksum=None,
additional_URLs=None,
overwrite=False,
**extratypes):
'''
Registers a new Handle with given name. If the handle already exists
and overwrite is not set to True, the method will throw an
exception.
:param handle: The full name of the handle to be registered (prefix
and suffix)
:param location: The URL of the data entity to be referenced
:param checksum: Optional. The checksum string.
:param extratypes: Optional. Additional key value pairs.
:param additional_URLs: Optional. A list of URLs (as strings) to be
added to the handle record as 10320/LOC entry.
:param overwrite: Optional. If set to True, an existing handle record
will be overwritten. Defaults to False.
:raises: :exc:`~pyhandle.handleexceptions.HandleAlreadyExistsException` Only if overwrite is not set or
set to False.
:raises: :exc:`~pyhandle.handleexceptions.HandleAuthenticationError`
:raises: :exc:`~pyhandle.handleexceptions.HandleSyntaxError`
:return: The handle name.
'''
LOGGER.debug('register_handle...')
# If already exists and can't be overwritten:
if overwrite == False:
handlerecord_json = self.retrieve_handle_record_json(handle)
if handlerecord_json is not None:
msg = 'Could not register handle'
LOGGER.error(msg + ', as it already exists.')
raise HandleAlreadyExistsException(handle=handle, msg=msg)
# Create admin entry
list_of_entries = []
adminentry = self.__create_admin_entry(
self.__handleowner, self.__HS_ADMIN_permissions,
self.__make_another_index(list_of_entries, hs_admin=True), handle)
list_of_entries.append(adminentry)
# Create other entries
entry_URL = self.__create_entry(
'URL', location,
self.__make_another_index(list_of_entries, url=True))
list_of_entries.append(entry_URL)
if checksum is not None:
entryChecksum = self.__create_entry(
'CHECKSUM', checksum,
self.__make_another_index(list_of_entries))
list_of_entries.append(entryChecksum)
if extratypes is not None:
for key, value in extratypes.items():
entry = self.__create_entry(
key, value, self.__make_another_index(list_of_entries))
list_of_entries.append(entry)
# Create record itself and put to server
op = 'registering handle'
resp, put_payload = self.__send_handle_put_request(handle,
list_of_entries,
overwrite=overwrite,
op=op)
resp_content = decoded_response(resp)
if hsresponses.was_handle_created(resp) or hsresponses.handle_success(
resp):
LOGGER.info("Handle registered: " + handle)
return json.loads(resp_content)['handle']
elif hsresponses.is_temporary_redirect(resp):
oldurl = resp.url
newurl = resp.headers['location']
raise GenericHandleError(operation=op,
handle=handle,
response=resp,
payload=put_payload,
msg='Temporary redirect from ' + oldurl +
' to ' + newurl + '.')
elif hsresponses.handle_not_found(resp):
raise GenericHandleError(
operation=op,
handle=handle,
response=resp,
payload=put_payload,
msg=
'Could not create handle. Possibly you used HTTP instead of HTTPS?'
)
else:
raise GenericHandleError(operation=op,
handle=handle,
reponse=resp,
payload=put_payload)
def handle_already_exists(response):
response_content = decoded_response(response)
if response.status_code == 409 & json.loads(
response_content)["responseCode"] == 101:
return True
return False
def values_not_found(response):
response_content = decoded_response(response)
if response.status_code == 400 and json.loads(
response_content)["responseCode"] == 200:
return True
return False
def handle_not_found(response):
response_content = decoded_response(response)
if response.status_code == 404 and json.loads(
response_content)["responseCode"] == 100:
return True
return False
def was_handle_created(response):
response_content = decoded_response(response)
if response.status_code == 201 and json.loads(
response_content)["responseCode"] == 1:
return True
return False
def is_handle_empty(response):
response_content = decoded_response(response)
if response.status_code == 200 and json.loads(
response_content)["responseCode"] == 200:
return True
return False
def handle_success(response):
response_content = decoded_response(response)
if (response.status_code == 200 or response.status_code
== 201) and json.loads(response_content)["responseCode"] == 1:
return True
return False
