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a k�h " � @ s� d Z ddlZddlZddlZddlZddlmZ ddlmZm Z m Z ddl m Z G dd� de �Z e e �G dd � d ��Ze e �G d d � d ��Ze e �G d d � d ��ZdS )zF Protocol agnostic implementations of SASL authentication mechanisms. � N)�md5)� Attribute� Interface� implementer)� networkStringc @ s$ e Zd Zed�Zdd� Zdd� ZdS )�ISASLMechanismz#Common name for the SASL Mechanism.c C s dS )z� Get the initial client response, if defined for this mechanism. @return: initial client response string. @rtype: C{str}. N� r r r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/twisted/words/protocols/jabber/sasl_mechanisms.py�getInitialResponse s z!ISASLMechanism.getInitialResponsec C s dS )z� Get the response to a server challenge. @param challenge: server challenge. @type challenge: C{str}. @return: client response. @rtype: C{str}. Nr )� challenger r r � getResponse! s zISASLMechanism.getResponseN)�__name__� __module__� __qualname__r �namer r r r r r r s r c @ s$ e Zd ZdZdZdd� Zdd� ZdS )� Anonymouszm Implements the ANONYMOUS SASL authentication mechanism. This mechanism is defined in RFC 2245. Z ANONYMOUSc C s d S �Nr ��selfr r r r 6 s z Anonymous.getInitialResponsec C s d S r r �r r r r r r 9 s zAnonymous.getResponseN)r r r �__doc__r r r r r r r r , s r c @ s, e Zd ZdZdZdd� Zdd� Zdd� Zd S ) �Plainz� Implements the PLAIN SASL authentication mechanism. The PLAIN SASL authentication mechanism is defined in RFC 2595. ZPLAINc C s" |pd| _ |pd| _|pd| _dS )a @param authzid: The authorization identity. @type authzid: L{unicode} @param authcid: The authentication identity. @type authcid: L{unicode} @param password: The plain-text password. @type password: L{unicode} � N)�authzid�authcid�password)r r r r r r r �__init__H s zPlain.__init__c C s, | j �d�d | j�d� d | j�d� S )Nzutf-8� )r �encoder r r r r r r X s � �� ��zPlain.getInitialResponsec C s d S r r r r r r r a s zPlain.getResponseN)r r r r r r r r r r r r r > s r c @ sT e Zd ZdZdZdd� Zdd� Zdd� Zd d � Zd d � Z d d� Z dd� Z dd� Z dS )� DigestMD5z� Implements the DIGEST-MD5 SASL authentication mechanism. The DIGEST-MD5 SASL authentication mechanism is defined in RFC 2831. z DIGEST-MD5c C sB || _ || _|| _|� d|� �| _|dur>| jd|� �7 _dS )a� @param serv_type: An indication of what kind of server authentication is being attempted against. For example, C{u"xmpp"}. @type serv_type: C{unicode} @param host: The authentication hostname. Also known as the realm. This is used as a scope to help select the right credentials. @type host: C{unicode} @param serv_name: An additional identifier for the server. @type serv_name: C{unicode} @param username: The authentication username to use to respond to a challenge. @type username: C{unicode} @param password: The authentication password to use to respond to a challenge. @type password: C{unicode} �/N)�usernamer � defaultRealm� digest_uri)r Z serv_type�hostZ serv_namer! r r r r r p s zDigestMD5.__init__c C s d S r r r r r r r � s z DigestMD5.getInitialResponsec C sb | � |�}d|v rdS |d �d�}z |d }W n tyN | j�|�}Y n0 | �|||d �S )Ns rspauth� � charset�ascii� realm� nonce)�_parse�decode�KeyErrorr" r � _genResponse)r r � directives�charset�realmr r r r � s zDigestMD5.getResponsec C s� |}i }d}d}|r�|� d|�}|||� �� }|d7 }|||d � dkr�|d7 }|� d|�}|||� } |�d|�d }|dkr�d}nB|�d|�}|dkr�||d � �� } d}n|||� �� } |d }| ||< qd D ] } | |v r�|| �d�|| < q�|S ) z� Parses the server challenge. Splits the challenge into a dictionary of directives with values. @return: challenge directives and their values. @rtype: C{dict} of C{str} to C{str}. r T� =� � "� ,F���N)� qop� cipher)�index�lstrip�find�rstrip�split) r r �sZ paramDict�curZremainingParams�middler �end�value�paramr r r r* � s4 zDigestMD5._parsec C sL g }|� � D ]4\}}|dv r*|d | }n |d | }|�|� q d�|�S )af Create message string from directives. @param directives: dictionary of directives (names to their values). For certain directives, extra quotes are added, as needed. @type directives: C{dict} of C{str} to C{str} @return: message string. @rtype: C{str}. )� usernamer( � cnoncer) � digest-uris authzidr7 r1 r4 )�items�append�join)r r. Zdirective_listr rA � directiver r r �_unparse� s zDigestMD5._unparsec s� dd� � dd� }� fdd�} � |d | d | �d | d | } d| } || |� | ��|d | d | d d d |� | �� ��} | S ) z� Calculates response with given encoded parameters. @return: The I{response} field of a response to a Digest-MD5 challenge of the given parameters. @rtype: L{bytes} c S s t | ��� S r )r �digest)r= r r r �H� s z'DigestMD5._calculateResponse.<locals>.Hc S s t �| �S r )�binascii�b2a_hex)�nr r r �HEX� s z)DigestMD5._calculateResponse.<locals>.HEXc s � | d | �S )N� :r )�kr= �rL r r �KD� s z(DigestMD5._calculateResponse.<locals>.KDrQ s AUTHENTICATE:� authr ) r �cnonce�nc�noncer! r r0 �urirP rT Za1Za2�responser rS r �_calculateResponse� s ( *��z DigestMD5._calculateResponsec C s� z(| j �|�}| j�|�}| j�|�}W n ty< � Y n0 tdd��}| �� }d} | �|||||||�} |||||| || |�d�d� } | �| �S )z� Generate response-value. Creates a response to a challenge according to section 2.1.2.1 of RFC 2831 using the C{charset}, C{realm} and C{nonce} directives from the challenge. r2 �08xrU r' ) rC r( r) rD s ncr6 rE s responser& ) r! r r r# � UnicodeErrorr � _gen_noncer[ rJ ) r r/ r0 rX r! r r# rW rV �qoprZ r. r r r r- s. �� zDigestMD5._genResponsec C s4 dt � � t�� t�� f }t|�}t|��� �d�S )Nz%f:%f:%dr' )�random�time�os�getpidr r � hexdigestr )r Z nonceStringZ nonceBytesr r r r^ 0 s zDigestMD5._gen_nonceN) r r r r r r r r r* rJ r[ r- r^ r r r r r f s , 'r )r rM rb r` ra �hashlibr Zzope.interfacer r r Ztwisted.python.compatr r r r r r r r r �<module> s '
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