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lib
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twisted
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conch
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factory.cpython-312.pyc
� Ϫ�f� � � � d Z ddlZddlmZ ddlmZmZmZmZ ddl m Z ddl m Z m Z mZmZ ddlmZ ddlmZ G d � d ej( � Zy) z� A Factory for SSH servers. See also L{twisted.conch.openssh_compat.factory} for OpenSSH compatibility. Maintainer: Paul Swartz � N)�chain)�Dict�List�Optional�Tuple)�error)�_kex� connection� transport�userauth)�protocol)�Loggerc � � e Zd ZU dZeeeeeeef f e d< e � Z e j Zej ej$ d�Zdd�Zd� Zd� Zd � Zdeeeeeeef f fd �Zd edeeef fd �Zd � Zy)� SSHFactoryz$ A Factory for SSH servers. �primes)� ssh-userauths ssh-connection�returnNc �& � t | d� s| j � | _ t | d� s| j � | _ | j r | j st j d� �t | d� s| j � | _ yy)z4 Check for public and private keys. � publicKeys� privateKeyszno host keys, failingr N) �hasattr� getPublicKeysr �getPrivateKeysr r � ConchError� getPrimesr ��selfs �;/usr/lib/python3/dist-packages/twisted/conch/ssh/factory.py� startFactoryzSSHFactory.startFactory& sw � � �t�\�*� "� 0� 0� 2�D�O��t�]�+� #� 2� 2� 4�D� ����d�&6�&6��"�"�#:�;� ;��t�X�&� �.�.�*�D�K� '� c � � t j j | |� }t t j d� | j j � D � � � |_ | j sd| j j d� |j D �cg c]. }t j |� st j |� r|��0 c}|_ |S c c}w )a= Create an instance of the server side of the SSH protocol. @type addr: L{twisted.internet.interfaces.IAddress} provider @param addr: The address at which the server will listen. @rtype: L{twisted.conch.ssh.transport.SSHServerTransport} @return: The built transport. c 3 �< K � | ] }|j � �� � y �w�N)� supportedSignatureAlgorithms)�.0�keys r � <genexpr>z+SSHFactory.buildProtocol.<locals>.<genexpr>? s � �� � �7:��0�0�2� �s � zTdisabling non-fixed-group key exchange algorithms because we cannot find moduli file)r �Factory� buildProtocol�listr � from_iterabler �values�supportedPublicKeysr �_log�info�supportedKeyExchangesr � isFixedGroup�isEllipticCurve)r �addr�t� kexAlgorithms r r) zSSHFactory.buildProtocol3 s� � � � � � *� *�4�� 6�� $� � � � �>B�>N�>N�>U�>U�>W� � �! �� � �{�{� �I�I�N�N�5� � %&�$;�$;�'� ��$�$�\�2�d�6J�6J�<�6X� �'�A� #� ��� 's �3Cc � � t d� �)z� Called when the factory is started to get the public portions of the servers host keys. Returns a dictionary mapping SSH key types to public key strings. @rtype: L{dict} zgetPublicKeys unimplemented��NotImplementedErrorr s r r zSSHFactory.getPublicKeysO s � � "�"?�@�@r c � � t d� �)z� Called when the factory is started to get the private portions of the servers host keys. Returns a dictionary mapping SSH key types to L{twisted.conch.ssh.keys.Key} objects. @rtype: L{dict} z getPrivateKeys unimplementedr7 r s r r zSSHFactory.getPrivateKeysY s � � "�"@�A�Ar c � � y)z� Called when the factory is started to get Diffie-Hellman generators and primes to use. Returns a dictionary mapping number of bits to lists of tuple of (generator, prime). N� r s r r zSSHFactory.getPrimesc s � r �bitsc �� �� dt dt f�fd� }| j �J d� �t | j j � |�� }|d }t j | j | � S )z� Return a tuple of (g, p) for a Diffe-Hellman process, with p being as close to C{bits} bits as possible. �ir c � �� t | �z � S r# )�abs)r> r< s �r �keyfuncz&SSHFactory.getDHPrime.<locals>.keyfuncp s �� ��q�4�x�=� r z(Factory should have been started by now.)r& r )�intr �sorted�keys�random�choice)r r< rA � primesKeys�realBitss ` r � getDHPrimezSSHFactory.getDHPrimej sh �� � !�s� !�s� !� �{�{�&�R�(R�R�&��D�K�K� ,� ,� .�G�<� � �a�=���}�}�T�[�[�� 2�3�3r c �D � |dk( s t |d� r| j | S y)z� Return a class to use as a service for the given transport. @type transport: L{transport.SSHServerTransport} @type service: L{bytes} @rtype: subclass of L{service.SSHService} r �avatarN)r �services)r r �services r � getServicezSSHFactory.getServicex s* � � �o� %���H�)E��=�=��)� )� *Fr )r N)�__name__� __module__� __qualname__�__doc__r r rB r r �__annotations__r r. r �SSHServerTransportr r �SSHUserAuthServerr � SSHConnectionrL r r) r r r rI rN r; r r r r s� � �� �T�#�t�E�#�s�(�O� 4�4�5� 6�6� �8�D��+�+�H� "�3�3�%�3�3��H� +��8A�B� �8�D��d�5��c��?�.C�)C�$D�E� � 4�s� 4�u�S�#�X�� 4� *r r )rR rE � itertoolsr �typingr r r r � twisted.conchr �twisted.conch.sshr r r r �twisted.internetr �twisted.loggerr r( r r; r r �<module>r] s; ��� � � .� .� � C� C� %� !�j*��!�!� j*r
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