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Editing: auth_strategy.cpython-38.pyc
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U v��f�, � @ s� d Z ddlmZ ddlmZ ddlmZ ddlmZ G dd� d�Z G d d � d e �Z G d d � d e �Z G d d� de �Z G dd� de �Z G dd� de �Zedddg�ZG dd� de�ZG dd� de�ZG dd� d�Zd S ) z� Modern, adaptable authentication machinery. Replaces certain parts of `.SSHClient`. For a concrete implementation, see the ``OpenSSHAuthStrategy`` class in `Fabric <https://fabfile.org>`_. � )� namedtuple� )�AgentKey)� get_logger)�AuthenticationExceptionc @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) � AuthSourcez� Some SSH authentication source, such as a password, private key, or agent. See subclasses in this module for concrete implementations. All implementations must accept at least a ``username`` (``str``) kwarg. c C s || _ d S �N��username)�selfr � r �G/opt/alt/python38/lib/python3.8/site-packages/paramiko/auth_strategy.py�__init__ s zAuthSource.__init__c K s0 dd� |� � D �}d�|�}| jj� d|� d�S )Nc S s g | ]\}}|� d |���qS )�=r )�.0�k�vr r r � <listcomp> s z$AuthSource._repr.<locals>.<listcomp>z, �(�))�items�join� __class__�__name__)r �kwargs�pairsZjoinedr r r �_repr s zAuthSource._reprc C s | � � S r )r �r r r r �__repr__" s zAuthSource.__repr__c C s t �dS )z) Perform authentication. N��NotImplementedError�r � transportr r r � authenticate% s zAuthSource.authenticateN)r � __module__� __qualname__�__doc__r r r r# r r r r r s r c @ s e Zd ZdZdd� ZdS )�NoneAuthzS Auth type "none", ie https://www.rfc-editor.org/rfc/rfc4252#section-5.2 . c C s |� | j�S r )Z auth_noner r! r r r r# 1 s zNoneAuth.authenticateN�r r$ r% r& r# r r r r r' , s r' c s4 e Zd ZdZ� fdd�Z� fdd�Zdd� Z� ZS )�Passworda Password authentication. :param callable password_getter: A lazy callable that should return a `str` password value at authentication time, such as a `functools.partial` wrapping `getpass.getpass`, an API call to a secrets store, or similar. If you already know the password at instantiation time, you should simply use something like ``lambda: "my literal"`` (for a literal, but also, shame on you!) or ``lambda: variable_name`` (for something stored in a variable). c s t � j|d� || _d S �Nr )�superr �password_getter)r r r, �r r r r D s zPassword.__init__c s t � j| jd�S )N)�user)r+ r r r r- r r r H s zPassword.__repr__c C s | � � }|�| j|�S r )r, Z auth_passwordr )r r" �passwordr r r r# M s zPassword.authenticate)r r$ r% r& r r r# � __classcell__r r r- r r) 5 s r) c @ s e Zd ZdZdd� ZdS )� PrivateKeya� Essentially a mixin for private keys. Knows how to auth, but leaves key material discovery/loading/decryption to subclasses. Subclasses **must** ensure that they've set ``self.pkey`` to a decrypted `.PKey` instance before calling ``super().authenticate``; typically either in their ``__init__``, or in an overridden ``authenticate`` prior to its `super` call. c C s |� | j| j�S r )Zauth_publickeyr �pkeyr! r r r r# e s zPrivateKey.authenticateNr( r r r r r1 X s r1 c s, e Zd ZdZ� fdd�Z� fdd�Z� ZS )�InMemoryPrivateKeyz1 An in-memory, decrypted `.PKey` object. c s t � j|d� || _d S r* )r+ r r2 )r r r2 r- r r r n s zInMemoryPrivateKey.__init__c s( t � j| jd�}t| jt�r$|d7 }|S )N)r2 z [agent])r+ r r2 � isinstancer )r �repr- r r r s s zInMemoryPrivateKey.__repr__�r r$ r% r& r r r0 r r r- r r3 i s r3 c s( e Zd ZdZ� fdd�Zdd� Z� ZS )�OnDiskPrivateKeya� Some on-disk private key that needs opening and possibly decrypting. :param str source: String tracking where this key's path was specified; should be one of ``"ssh-config"``, ``"python-config"``, or ``"implicit-home"``. :param Path path: The filesystem path this key was loaded from. :param PKey pkey: The `PKey` object this auth source uses/represents. c s> t � j|d� || _d}||kr.td|����|| _|| _d S )Nr )z ssh-configz python-configz implicit-homez source argument must be one of: )r+ r �source� ValueError�pathr2 )r r r8 r: r2 �allowedr- r r r � s zOnDiskPrivateKey.__init__c C s | j | j| jt| j�d�S )N)�keyr8 r: )r r2 r8 �strr: r r r r r � s �zOnDiskPrivateKey.__repr__r6 r r r- r r7 | s r7 � SourceResultr8 �resultc s( e Zd ZdZ� fdd�Zdd� Z� ZS )� AuthResulta� Represents a partial or complete SSH authentication attempt. This class conceptually extends `AuthStrategy` by pairing the former's authentication **sources** with the **results** of trying to authenticate with them. `AuthResult` is a (subclass of) `list` of `namedtuple`, which are of the form ``namedtuple('SourceResult', 'source', 'result')`` (where the ``source`` member is an `AuthSource` and the ``result`` member is either a return value from the relevant `.Transport` method, or an exception object). .. note:: Transport auth method results are always themselves a ``list`` of "next allowable authentication methods". In the simple case of "you just authenticated successfully", it's an empty list; if your auth was rejected but you're allowed to try again, it will be a list of string method names like ``pubkey`` or ``password``. The ``__str__`` of this class represents the empty-list scenario as the word ``success``, which should make reading the result of an authentication session more obvious to humans. Instances also have a `strategy` attribute referencing the `AuthStrategy` which was attempted. c s || _ t� j||� d S r )�strategyr+ r )r rA �argsr r- r r r � s zAuthResult.__init__c C s d� dd� | D ��S )N� c s s$ | ] }|j � d |jpd� �V qdS )z -> �successN)r8 r? )r �xr r r � <genexpr>� s z%AuthResult.__str__.<locals>.<genexpr>)r r r r r �__str__� s �zAuthResult.__str__)r r$ r% r& r rG r0 r r r- r r@ � s r@ c @ s e Zd ZdZdd� Zdd� ZdS )� AuthFailurea� Basic exception wrapping an `AuthResult` indicating overall auth failure. Note that `AuthFailure` descends from `AuthenticationException` but is generally "higher level"; the latter is now only raised by individual `AuthSource` attempts and should typically only be seen by users when encapsulated in this class. It subclasses `AuthenticationException` primarily for backwards compatibility reasons. c C s || _ d S r �r? )r r? r r r r � s zAuthFailure.__init__c C s dt | j� S )NrC )r= r? r r r r rG � s zAuthFailure.__str__N)r r$ r% r& r rG r r r r rH � s rH c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) � AuthStrategya This class represents one or more attempts to auth with an SSH server. By default, subclasses must at least accept an ``ssh_config`` (`.SSHConfig`) keyword argument, but may opt to accept more as needed for their particular strategy. c C s || _ tt�| _d S r )� ssh_configr r �log)r rK r r r r � s zAuthStrategy.__init__c C s t �dS )a[ Generator yielding `AuthSource` instances, in the order to try. This is the primary override point for subclasses: you figure out what sources you need, and ``yield`` them. Subclasses _of_ subclasses may find themselves wanting to do things like filtering or discarding around a call to `super`. Nr r r r r � get_sources� s zAuthStrategy.get_sourcesc C s� d}t | d�}| �� D ]�}| j�d|� �� z|�|�}d}W nF tk r� } z(|}|jj}| j�d|� d|� �� W 5 d}~X Y nX |� t ||�� |r q�q|s�t |d��|S ) z� Handles attempting `AuthSource` instances yielded from `get_sources`. You *normally* won't need to override this, but it's an option for advanced users. F)rA zTrying TzAuthentication via z failed with NrI ) r@ rM rL �debugr# � Exceptionr r �info�appendr> rH )r r" Z succeededZoverall_resultr8 r? �eZ source_classr r r r# s& � zAuthStrategy.authenticateN)r r$ r% r& r rM r# r r r r rJ � s rJ N)r& � collectionsr Zagentr �utilr Z ssh_exceptionr r r' r) r1 r3 r7 r> �listr@ rH rJ r r r r �<module> s #! .
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