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a k�h � @ s� d Z ddlZddlZddlmZmZmZmZ ddlm Z ddl m Z m Z ddl mZ ddlmZ ddlmZ d d lmZmZ d d lmZmZmZmZ G d d � d e �ZG dd� de �Z dZ dZ dZ dZ e ej!�G dd� d��Z"dS )zD IProxyParser implementation for version two of the PROXY protocol. � N)�Callable�Tuple�Type�Union)� implementer)� ValueConstant�Values)�Literal)�address)�compat� )�_info� _interfaces)�InvalidNetworkProtocol�InvalidProxyHeader�MissingAddressData� convertErrorc @ s0 e Zd ZdZed�Zed�Zed�Zed�ZdS )� NetFamilyz( Values for the 'family' field. r � � �0 N) �__name__� __module__� __qualname__�__doc__r �UNSPECZINET�INET6�UNIX� r r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/twisted/protocols/haproxy/_v2parser.pyr s r c @ s( e Zd ZdZed�Zed�Zed�ZdS )� NetProtocolz& Values for 'protocol' field. r r � N)r r r r r r ZSTREAM�DGRAMr r r r r ) s r �� � ZLOCALZPROXYc @ s� e Zd ZdZdZdgZeed�Zddddddd�Z d d �d d �Z e e e eje f e d f d�dd�Zee e d�dd��Zee e d�dd��Zee ejd�dd��Zd S )�V2Parserzn PROXY protocol version two header parser. Version two of the PROXY protocol is a binary format. s QUIT r )r r z!4s4s2Hz !16s16s2Hz !108s108s)� � �! �" �1 �2 N)�returnc C s d| _ d S )N� )�buffer)�selfr r r �__init__P s zV2Parser.__init__�NN)�datar, c C s� | j |7 _ t| j �dk r"t� �t�d| j dd� �d d }t| j �|k rRdS | j d|� | j |d� }}d| _ | �|�}||fS )a� Consume a chunk of data and attempt to parse it. @param data: A bytestring. @type data: bytes @return: A two-tuple containing, in order, a L{_interfaces.IProxyInfo} and any bytes fed to the parser that followed the end of the header. Both of these values are None until a complete header is parsed. @raises InvalidProxyHeader: If the bytes fed to the parser create an invalid PROXY header. r z!H� r r1 Nr- )r. �lenr �struct�unpack�parse)r/ r2 �size�header� remaining�infor r r �feedS s z V2Parser.feed)� bytestringr, c C s d� dd� t�| �D ��S )a7 Convert packed 32-bit IPv4 address bytes into a dotted-quad ASCII bytes representation of that address. @param bytestring: 4 octets representing an IPv4 address. @type bytestring: L{bytes} @return: a dotted-quad notation IPv4 address. @rtype: L{bytes} � .c s s" | ]}d t |�f �d�V qdS )z%i�asciiN)�ord�encode��.0�br r r � <genexpr>} s z(V2Parser._bytesToIPv4.<locals>.<genexpr>)�joinr � iterbytes�r= r r r � _bytesToIPv4q s �zV2Parser._bytesToIPv4c s* t �| �� d�� fdd�tddd�D ��S )a= Convert packed 128-bit IPv6 address bytes into a colon-separated ASCII bytes representation of that address. @param bytestring: 16 octets representing an IPv6 address. @type bytestring: L{bytes} @return: a dotted-quad notation IPv6 address. @rtype: L{bytes} � :c 3 s. | ]&}t � ||d � d�d��d�V qdS )� r �xr? N)�intrA rB �Z hexStringr r rE � s �z(V2Parser._bytesToIPv6.<locals>.<genexpr>r r rK )�binascii�b2a_hexrF �rangerH r rN r � _bytesToIPv6� s �zV2Parser._bytesToIPv6)�liner, c C sd |dd� }d}t tt��0 t|dd� �}t|dd� �}W d � n1 sP0 Y || jkrjt� �|t@ |t@ }}|| jvs�|| jvr�t� �| j| t kr�t � |dd�S |t@ |t@ }} t t t ��$ t�|�}t�| �} W d � n1 s�0 Y |tju �s| tju �r(t � |dd�S | j| } |ddt�| � � }|tju �r�t tjt�� t�| |�\} } W d � n1 �s�0 Y t � |t�| �d��t�| �d���S d} | tj u �r�d} tj }| j }|tj u �r�tj }| j!}t tjt��( t�| |�}|\} } }}W d � n1 �s,0 Y t � ||| || ��"� |�|| || ��"� |��S ) a� Parse a bytestring as a full PROXY protocol header. @param line: A bytestring that represents a valid HAProxy PROXY protocol version 2 header. @type line: bytes @return: A L{_interfaces.IProxyInfo} containing the parsed data. @raises InvalidProxyHeader: If the bytestring does not represent a valid PROXY header. N� � r3 r � ZTCPZUDP)#r � IndexErrorr r@ �PREFIX�_HIGH�_LOW�VERSIONS�COMMANDS� _LOCALCOMMANDr � ProxyInfo� ValueErrorr r Z lookupByValuer r �ADDRESSFORMATSr5 �calcsizer �errorr r6 r Z UNIXAddress�rstripr" � IPv4AddressrI r � IPv6AddressrR �decode)�clsrS �prefixZaddrInfoZversionCommandZ familyProto�version�command�familyZnetprotoZ addressFormat�source�destZaddrTypeZaddrClsZ addrParserr; ZsPortZdPortr r r r7 � sZ . ( 0� � ,�zV2Parser.parse)r r r r rX r[ r] � _PROXYCOMMANDr\ r` r0 �bytesr r r r^ r< � staticmethodrI rR � classmethodr7 r r r r r% 9 s* � � r% )#r rO r5 �typingr r r r Zzope.interfacer Z constantlyr r �typing_extensionsr Ztwisted.internetr Ztwisted.pythonr � r r � _exceptionsr r r r r r rY rZ r] rn Z IProxyParserr% r r r r �<module> s$
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