Exemplo n.º 1
0
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)
Exemplo n.º 2
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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)
Exemplo n.º 3
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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)
Exemplo n.º 4
0
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)