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Cleans a IPv6 address string.
Validity is checked by calling is_valid_ipv6_address() - if an
invalid address is passed, ValidationError is raised.
Replaces the longest continious zero-sequence with "::" and
removes leading zeroes and makes sure all hextets are lowercase.
Args:
ip_str: A valid IPv6 address.
unpack_ipv4: if an IPv4-mapped address is found,
return the plain IPv4 address (default=False).
error_message: A error message for in the ValidationError.
Returns:
A compressed IPv6 address, or the same value
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Sanitize IPv4 mapping in a expanded IPv6 address.
This converts ::ffff:0a0a:0a0a to ::ffff:10.10.10.10.
If there is nothing to sanitize, returns an unchanged
string.
Args:
ip_str: A string, the expanded IPv6 address.
Returns:
The sanitized output string, if applicable.
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Unpack an IPv4 address that was mapped in a compressed IPv6 address.
This converts 0000:0000:0000:0000:0000:ffff:10.10.10.10 to 10.10.10.10.
If there is nothing to sanitize, returns None.
Args:
ip_str: A string, the expanded IPv6 address.
Returns:
The unpacked IPv4 address, or None if there was nothing to unpack.
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Ensure we have a valid IPv6 address.
Args:
ip_str: A string, the IPv6 address.
Returns:
A boolean, True if this is a valid IPv6 address.
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Expand a shortened IPv6 address.
Args:
ip_str: A string, the IPv6 address.
Returns:
A string, the expanded IPv6 address.
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)c C s@ | j d � d k r t St d � | j d � D� � r< t St S( s� Determine if the address is shortened.
Args:
ip_str: A string, the IPv6 address.
Returns:
A boolean, True if the address is shortened.
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