def validate_and_normalize_ip(ip):
"""
Return normalized ip if the ip is a valid ip.
Otherwise raise ValueError Exception. The hostname is
normalized to all lower case. IPv6-addresses are converted to
lowercase and fully expanded.
"""
# first convert to lower case
new_ip = ip.lower()
if is_valid_ipv4(new_ip):
return new_ip
elif is_valid_ipv6(new_ip):
return expand_ipv6(new_ip)
else:
raise ValueError('Invalid ip %s' % ip)
def validate_and_normalize_ip(ip):
"""
Return normalized ip if the ip is a valid ip.
Otherwise raise ValueError Exception. The hostname is
normalized to all lower case. IPv6-addresses are converted to
lowercase and fully expanded.
"""
# first convert to lower case
new_ip = ip.lower()
if is_valid_ipv4(new_ip):
return new_ip
elif is_valid_ipv6(new_ip):
return expand_ipv6(new_ip)
else:
raise ValueError('Invalid ip %s' % ip)
def validate_and_normalize_address(address):
"""
Return normalized address if the address is a valid ip or hostname.
Otherwise raise ValueError Exception. The hostname is
normalized to all lower case. IPv6-addresses are converted to
lowercase and fully expanded.
RFC1123 2.1 Host Names and Nubmers
DISCUSSION
This last requirement is not intended to specify the complete
syntactic form for entering a dotted-decimal host number;
that is considered to be a user-interface issue. For
example, a dotted-decimal number must be enclosed within
"[ ]" brackets for SMTP mail (see Section 5.2.17). This
notation could be made universal within a host system,
simplifying the syntactic checking for a dotted-decimal
number.
If a dotted-decimal number can be entered without such
identifying delimiters, then a full syntactic check must be
made, because a segment of a host domain name is now allowed
to begin with a digit and could legally be entirely numeric
(see Section 6.1.2.4). However, a valid host name can never
have the dotted-decimal form #.#.#.#, since at least the
highest-level component label will be alphabetic.
"""
new_address = address.lstrip('[').rstrip(']')
if address.startswith('[') and address.endswith(']'):
return validate_and_normalize_ip(new_address)
new_address = new_address.lower()
if is_valid_ipv4(new_address):
return new_address
elif is_valid_ipv6(new_address):
return expand_ipv6(new_address)
elif is_valid_hostname(new_address):
return new_address
else:
raise ValueError('Invalid address %s' % address)
def validate_and_normalize_address(address):
"""
Return normalized address if the address is a valid ip or hostname.
Otherwise raise ValueError Exception. The hostname is
normalized to all lower case. IPv6-addresses are converted to
lowercase and fully expanded.
RFC1123 2.1 Host Names and Nubmers
DISCUSSION
This last requirement is not intended to specify the complete
syntactic form for entering a dotted-decimal host number;
that is considered to be a user-interface issue. For
example, a dotted-decimal number must be enclosed within
"[ ]" brackets for SMTP mail (see Section 5.2.17). This
notation could be made universal within a host system,
simplifying the syntactic checking for a dotted-decimal
number.
If a dotted-decimal number can be entered without such
identifying delimiters, then a full syntactic check must be
made, because a segment of a host domain name is now allowed
to begin with a digit and could legally be entirely numeric
(see Section 6.1.2.4). However, a valid host name can never
have the dotted-decimal form #.#.#.#, since at least the
highest-level component label will be alphabetic.
"""
new_address = address.lstrip('[').rstrip(']')
if address.startswith('[') and address.endswith(']'):
return validate_and_normalize_ip(new_address)
new_address = new_address.lower()
if is_valid_ipv4(new_address):
return new_address
elif is_valid_ipv6(new_address):
return expand_ipv6(new_address)
elif is_valid_hostname(new_address):
return new_address
else:
raise ValueError('Invalid address %s' % address)