def ip(field_rules, field_value):
ip_libraries = {
# Set the key to the name of the module to import.
# The value will be a dictionary with three keys:
#
# - function: The object or function to call, passing the IP
# address as the first argument.
#
# - event: If the library in question throws an exception when
# passed an invalid IP address, set to "exception". If the
# library returns a specific value when passed an invalid IP,
# set to "value".
#
# - action: If "event" is set to "exception", specify the
# exception class here, NOT as a string. If "event" is set to
# "value", specify the value to look for/compare against.
#
# If the value specified is encountered or if the exception
# specified is thrown, validation fails. Otherwise, validation
# succeeds.
'ipaddress': {
'function': 'ip_address',
'event': 'exception',
'action': ValueError,
},
'ipaddr': {
'function': 'IPAddress',
'event': 'exception',
'action': ValueError,
},
'IPy': {
'function': 'IP',
'event': 'exception',
'action': ValueError,
},
}
for ip_library, ip_config in compatibility.iterdict(ip_libraries):
try:
ip_handler = __import__(ip_library)
try:
# Grab the function we're going to call.
ip_function = getattr(ip_handler, '{function}'.format(function=ip_config['function']))
# Call the function passing the IP as an argument.
ip_result = ip_function(field_value)
if ip_config['event'] == 'exception' or (ip_config['event'] == 'compare' and ip_result == ip_config['action']):
return True
except ip_config['action'] as e:
# IP module exists, but the IP address isn't valid.
# Break the iteration, and return None.
return None
except ImportError as e:
# Error importing module try another one (if there is one)
continue
return True
def add_fields(self, fields):
for field_name, field_value in compatibility.iterdict(fields):
self.add_field(field_name, field_value)
def _request_arguments(self):
arguments = {}
for field_name, field_value in compatibility.iterdict(self.fields):
argument = fields.rules[field_name]["arg"]
arguments[argument] = field_value
return compatibility.urlencode(arguments)
