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###############################################################################
# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems) #
# and others #
# #
# All rights reserved. This program and the accompanying materials #
# are made available under the terms of the Apache License, Version 2.0 #
# which accompanies this distribution, and is available at #
# http://www.apache.org/licenses/LICENSE-2.0 #
###############################################################################
import re
PORT = "port number"
IP = "ipv4/ipv6 address"
HOSTNAME = "host name"
PATH = "path"
_PORT_REGEX = re.compile('^0*(?:6553[0-5]|655[0-2][0-9]|65[0-4][0-9]{2}|'
'6[0-4][0-9]{3}|[1-5][0-9]{4}|[1-9][0-9]{1,3}|[0-9])$')
_HOSTNAME_REGEX = re.compile('^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])'
'(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]))*$')
_PATH_REGEX = re.compile('^(\/){1}([^\/\0]+(\/)?)+$')
_IPV4_REGEX = re.compile('^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$')
_IPV6_REGEX = re.compile('^(((?=.*(::))(?!.*\3.+\3))\3?|[\dA-F]{1,4}:)([\dA-F]{1,4}(\3|:\b)|\2){5}(([\dA-F]{1,4}'
'(\3|:\b|$)|\2){2}|(((2[0-4]|1\d|[1-9])?\d|25[0-5])\.?\b){4})$')
_REGEX_MAP = {
PORT: _PORT_REGEX,
HOSTNAME: _HOSTNAME_REGEX,
PATH: _PATH_REGEX,
IP: [_IPV4_REGEX, _IPV6_REGEX]
}
def validate(key, value, regex_names, error_message=None):
if not isinstance(regex_names, list):
regex_names = [regex_names]
for regex_name in regex_names:
regexes = _REGEX_MAP[regex_name]
if not isinstance(regexes, list):
regexes = [regexes]
try:
value = str(value)
match_regexes = [regex for regex in regexes
if regex.match(value)]
if match_regexes:
return None
except:
pass
return error_message if error_message else \
'{0} must be a valid {1}'.format(key, " or ".join(regex_names))
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