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dd� Zdd� Zdd� Zdd� Zdd � Zd!d"� ZG d#d$� d$�ZdaejG d%d&� d&e��ZejG d'd(� d(e��ZG d)d*� d*�ZG d+d,� d,ee�ZG d-d.� d.e�ZG d/d0� d0ee�ZG d1d2� d2�Zee_G d3d4� d4�ZG d5d6� d6ee�Z G d7d8� d8e �Z!G d9d:� d:ee�Z"G d;d<� d<�Z#e#e _dS )>z�A fast, lightweight IPv4/IPv6 manipulation library in Python.
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and networks.
z1.0� N� � c @ s e Zd ZdZdS )�AddressValueErrorz%A Value Error related to the address.N��__name__�
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r r s r c C sV z
t | �W S ttfy Y n0 z
t| �W S ttfyB Y n0 t| �d���dS )a� Take an IP string/int and return an object of the correct type.
Args:
address: A string or integer, the IP address. Either IPv4 or
IPv6 addresses may be supplied; integers less than 2**32 will
be considered to be IPv4 by default.
Returns:
An IPv4Address or IPv6Address object.
Raises:
ValueError: if the *address* passed isn't either a v4 or a v6
address
z. does not appear to be an IPv4 or IPv6 addressN)�IPv4Addressr r �IPv6Address�
ValueError��addressr
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ip_address s
r Tc C sZ zt | |�W S ttfy" Y n0 zt| |�W S ttfyF Y n0 t| �d���dS )a� Take an IP string/int and return an object of the correct type.
Args:
address: A string or integer, the IP network. Either IPv4 or
IPv6 networks may be supplied; integers less than 2**32 will
be considered to be IPv4 by default.
Returns:
An IPv4Network or IPv6Network object.
Raises:
ValueError: if the string passed isn't either a v4 or a v6
address. Or if the network has host bits set.
z. does not appear to be an IPv4 or IPv6 networkN)�IPv4Networkr r �IPv6Networkr )r �strictr
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ip_network8 s r c C sV z
t | �W S ttfy Y n0 z
t| �W S ttfyB Y n0 t| �d���dS )ag Take an IP string/int and return an object of the correct type.
Args:
address: A string or integer, the IP address. Either IPv4 or
IPv6 addresses may be supplied; integers less than 2**32 will
be considered to be IPv4 by default.
Returns:
An IPv4Interface or IPv6Interface object.
Raises:
ValueError: if the string passed isn't either a v4 or a v6
address.
Notes:
The IPv?Interface classes describe an Address on a particular
Network, so they're basically a combination of both the Address
and Network classes.
z0 does not appear to be an IPv4 or IPv6 interfaceN)�
IPv4Interfacer r �
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r �ip_interfaceU s
r c C s. z| � dd�W S ty( td��Y n0 dS )a` Represent an address as 4 packed bytes in network (big-endian) order.
Args:
address: An integer representation of an IPv4 IP address.
Returns:
The integer address packed as 4 bytes in network (big-endian) order.
Raises:
ValueError: If the integer is negative or too large to be an
IPv4 IP address.
� �bigz&Address negative or too large for IPv4N��to_bytes�
OverflowErrorr r r
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r �v4_int_to_packedw s r c C s. z| � dd�W S ty( td��Y n0 dS )z�Represent an address as 16 packed bytes in network (big-endian) order.
Args:
address: An integer representation of an IPv6 IP address.
Returns:
The integer address packed as 16 bytes in network (big-endian) order.
� r z&Address negative or too large for IPv6Nr r r
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r �v6_int_to_packed� s
r! c C s, t | ��d�}t|�dkr(td| ����|S )zAHelper to split the netmask and raise AddressValueError if needed�/� zOnly one '/' permitted in )�str�split�lenr )r �addrr
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r �_split_optional_netmask� s r( c c sN t | �}t|� }}|D ]&}|j|jd kr:||fV |}|}q||fV dS )z�Find a sequence of sorted deduplicated IPv#Address.
Args:
addresses: a list of IPv#Address objects.
Yields:
A tuple containing the first and last IP addresses in the sequence.
� N)�iter�next�_ip)� addresses�it�first�last�ipr
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r �_find_address_range� s
r2 c C s$ | dkr|S t || | d @ �� �S )z�Count the number of zero bits on the right hand side.
Args:
number: an integer.
bits: maximum number of bits to count.
Returns:
The number of zero bits on the right hand side of the number.
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bit_length)Znumber�bitsr
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