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python38
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paramiko
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U v��f> � @ s� d Z ddlZddlZddlZddlZddlZddlZddlZddlZddl m Z ddl m Z ddl m Z mZ ddlmZmZ ddlmZ ddlmZmZ dd lmZmZ ed �Zd Zed �Z d Z dZ dZ e e d�Z e!e �"� �D ]\Z#Z$e$e e#� d�< q�G dd� d�Z%G dd� dej&�Z'G dd� de'�Z(G dd� de'�Z)dd� Z*G d d � d �Z+G d d � d e%�Z,G d d!� d!�Z-G d"d#� d#e%�Z.G d$d%� d%e�Z/dS )&z SSH Agent interface � N)�DEBUG)�select)�io_sleep�byte_chr)� SSHException�AuthenticationException)�Message)�PKey�UnknownKeyType)�asbytes� get_logger� � � � � � )z rsa-sha2-256z rsa-sha2-512z-cert-v01@openssh.comc @ s< e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd S )�AgentSSHc C s d | _ d| _d S �N� )�_conn�_keys��selfr r �?/opt/alt/python38/lib/python3.8/site-packages/paramiko/agent.py�__init__> s zAgentSSH.__init__c C s | j S )a� Return the list of keys available through the SSH agent, if any. If no SSH agent was running (or it couldn't be contacted), an empty list will be returned. This method performs no IO, just returns the list of keys retrieved when the connection was made. :return: a tuple of `.AgentKey` objects representing keys available on the SSH agent )r r r r r �get_keysB s zAgentSSH.get_keysc C sd || _ | �t�\}}|tkr$td��g }t|�� �D ] }|�t| |� � |� � d�� q4t |�| _ d S )Nz!could not get keys from ssh-agent)�agent�blob�comment) r � _send_message� cSSH2_AGENTC_REQUEST_IDENTITIES� SSH2_AGENT_IDENTITIES_ANSWERr �rangeZget_int�append�AgentKey� get_binary�get_text�tupler )r �conn�ptype�result�keys�ir r r �_connectQ s ��zAgentSSH._connectc C s$ | j d k r| j �� d | _ d| _d S r )r �closer r r r r �_closea s zAgentSSH._closec C sX t |�}| j�t�dt|��| � | �d�}t| �t�d|�d ��}t |� � �|fS )Nz>Ir r ) r r �send�struct�pack�len� _read_allr �unpack�ordZget_byte)r �msg�datar r r r g s zAgentSSH._send_messagec C sb | j �|�}t|�|k r^t|�dkr,td��| j �|t|� �}t|�dkrTtd��||7 }q |S )Nr �lost ssh-agent)r �recvr4 r )r �wantedr+ �extrar r r r5 n s zAgentSSH._read_allN) �__name__� __module__� __qualname__r r r. r0 r r5 r r r r r = s r c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) �AgentProxyThreadz@ Class in charge of communication between two channels. c C s" t jj| | jd� || _d| _d S )N)�targetF)� threading�Threadr �run�_agent�_exit�r r r r r r s zAgentProxyThread.__init__c C sp z\| � � \}}|| _|| _| j�� t| jt�sR| jjd ksJt| jjd�sRt d��| � � W n � Y nX d S )N�filenoz Unable to connect to SSH agent) �get_connection�_AgentProxyThread__inrZ_AgentProxyThread__addrrF �connect� isinstance�intr �hasattrr � _communicate)r �r�addrr r r rE � s � � zAgentProxyThread.runc C s� dd l }|� | j|j�}|� | j|j|tjB � | js�t| jj | jgg g d�}|d D ]�}| jj |kr�| jj � d�}t |�dkr�| j� |� q�| � � q�qV| j|krV| j� d�}t |�dkr�| jj � |� qV| � � q�qVt�t� q0d S )Nr g �?i )�fcntlrK ZF_GETFLZF_SETFL�os� O_NONBLOCKrG r rF r r; r4 r1 r0 �time�sleepr )r rS Zoldflags�events�fdr9 r r r rP � s& z AgentProxyThread._communicatec C s d| _ | j�� | jj�� d S )NT)rG rK r/ rF r r r r r r0 � s zAgentProxyThread._closeN)r> r? r@ �__doc__r rE rP r0 r r r r rA z s rA c @ s e Zd ZdZdd� Zdd� ZdS )�AgentLocalProxyz� Class to be used when wanting to ask a local SSH Agent being asked from a remote fake agent (so use a unix socket for ex.) c C s t �| |� d S �N)rA r rH r r r r � s zAgentLocalProxy.__init__c C sT t � t jt j�}z0|�| j�� � |�d� |�� \}}||fW S � Y nX dS )zX Return a pair of socket object and string address. May block! � N)�socket�AF_UNIX� SOCK_STREAM�bindrF � _get_filename�listen�accept)r r) rQ rR r r r rJ � s z AgentLocalProxy.get_connectionN�r> r? r@ rZ r rJ r r r r r[ � s r[ c @ s e Zd ZdZdd� Zdd� ZdS )�AgentRemoteProxyzA Class to be used when wanting to ask a remote SSH Agent c C s t �| |� || _d S r\ )rA r �_AgentRemoteProxy__chan)r r Zchanr r r r � s zAgentRemoteProxy.__init__c C s | j d fS r\ )rg r r r r rJ � s z AgentRemoteProxy.get_connectionNre r r r r rf � s rf c C s� dt jkrLtjdkrLt�tjtj�} z| �t jd � | W S Y dS X nHtjdkr�ddlm }m } d} |� � r||� � } n|� � r�|� � } | S dS dS )zj Returns some SSH agent object, or None if none were found/supported. .. versionadded:: 2.10 � SSH_AUTH_SOCK�win32Nr] )� win_pageant� win_openssh)rT �environ�sys�platformr^ r_ r` rL � rj rk Zcan_talk_to_agentZPageantConnectionZOpenSSHAgentConnection)r) rj rk r r r �get_agent_connection� s rp c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) �AgentClientProxya� Class proxying request as a client: #. client ask for a request_forward_agent() #. server creates a proxy and a fake SSH Agent #. server ask for establishing a connection when needed, calling the forward_agent_handler at client side. #. the forward_agent_handler launch a thread for connecting the remote fake agent and the local agent #. Communication occurs ... c C s& d | _ || _t| |�| _| j�� d S r\ )r Z_AgentClientProxy__chanRrf �thread�start�r Z chanRemoter r r r s zAgentClientProxy.__init__c C s | � � d S r\ �r/ r r r r �__del__ s zAgentClientProxy.__del__c C s t � }|sdS || _dS )zJ Method automatically called by ``AgentProxyThread.run``. N)rp r �r r) r r r rL s zAgentClientProxy.connectc C s6 t | d�r d| j_| j�d� | jdk r2| j�� dS )zh Close the current connection and terminate the agent Should be called manually rr T�� N)rO rr rG �joinr r/ r r r r r/ s zAgentClientProxy.closeN)r> r? r@ rZ r rv rL r/ r r r r rq � s rq c @ s@ e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dS )�AgentServerProxya� Allows an SSH server to access a forwarded agent. This also creates a unix domain socket on the system to allow external programs to also access the agent. For this reason, you probably only want to create one of these. :meth:`connect` must be called before it is usable. This will also load the list of keys the agent contains. You must also call :meth:`close` in order to clean up the unix socket and the thread that maintains it. (:class:`contextlib.closing` might be helpful to you.) :param .Transport t: Transport used for SSH Agent communication forwarding :raises: `.SSHException` -- mostly if we lost the agent c C sP t �| � || _t�d�| _t�| jtj � | jd | _ t | �| _ | j � � d S )NZsshproxyz /sshproxy.ssh)r r �_AgentServerProxy__t�tempfile�mkdtemp�_dirrT �chmod�stat�S_IRWXU�_filer[ rr rs )r �tr r r r 4 s zAgentServerProxy.__init__c C s | � � d S r\ ru r r r r rv = s zAgentServerProxy.__del__c C s2 | j �� }|d krtd��|�d� | �|� d S )Nr: z auth-agent)r{ Zopen_forward_agent_channelr �set_namer. )r Z conn_sockr r r rL @ s zAgentServerProxy.connectc C s8 t �| j� t �| j� d| j_| j�d� | �� dS )zk Terminate the agent, clean the files, close connections Should be called manually Trx N) rT �remover� �rmdirr~ rr rG ry r0 r r r r r/ G s zAgentServerProxy.closec C s d| � � iS )z� Helper for the environment under unix :return: a dict containing the ``SSH_AUTH_SOCK`` environment variables rh )rb r r r r �get_envR s zAgentServerProxy.get_envc C s | j S r\ )r� r r r r rb [ s z AgentServerProxy._get_filenameN) r> r? r@ rZ r rv rL r/ r� rb r r r r rz " s rz c @ s0 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd S ) �AgentRequestHandlera� Primary/default implementation of SSH agent forwarding functionality. Simply instantiate this class, handing it a live command-executing session object, and it will handle forwarding any local SSH agent processes it finds. For example:: # Connect client = SSHClient() client.connect(host, port, username) # Obtain session session = client.get_transport().open_session() # Forward local agent AgentRequestHandler(session) # Commands executed after this point will see the forwarded agent on # the remote end. session.exec_command("git clone https://my.git.repository/") c C s" d | _ || _|�| j� g | _d S r\ )r Z_AgentRequestHandler__chanCZrequest_forward_agent�_forward_agent_handler�"_AgentRequestHandler__clientProxys)r Z chanClientr r r r u s z AgentRequestHandler.__init__c C s | j �t|�� d S r\ )r� r$ rq rt r r r r� { s z*AgentRequestHandler._forward_agent_handlerc C s | � � d S r\ ru r r r r rv ~ s zAgentRequestHandler.__del__c C s | j D ] }|�� qd S r\ )r� r/ )r �pr r r r/ � s zAgentRequestHandler.closeN)r> r? r@ rZ r r� rv r/ r r r r r� _ s r� c @ s e Zd ZdZdd� Zdd� ZdS )�Agenta� Client interface for using private keys from an SSH agent running on the local machine. If an SSH agent is running, this class can be used to connect to it and retrieve `.PKey` objects which can be used when attempting to authenticate to remote SSH servers. Upon initialization, a session with the local machine's SSH agent is opened, if one is running. If no agent is running, initialization will succeed, but `get_keys` will return an empty tuple. :raises: `.SSHException` -- if an SSH agent is found, but speaks an incompatible protocol .. versionchanged:: 2.10 Added support for native openssh agent on windows (extending previous putty pageant support) c C s& t �| � t� }|sd S | �|� d S r\ )r r rp r. rw r r r r � s zAgent.__init__c C s | � � dS )z1 Close the SSH agent connection. N)r0 r r r r r/ � s z Agent.closeN)r> r? r@ rZ r r/ r r r r r� � s r� c s` e Zd ZdZddd�Zdd� Zdd� Zd d � Z� fd d �Zd d� Z e dd� �Z ddd�Z � Z S )r% a� Private key held in a local SSH agent. This type of key can be used for authenticating to a remote server (signing). Most other key operations work as expected. .. versionchanged:: 3.2 Added the ``comment`` kwarg and attribute. .. versionchanged:: 3.2 Added the ``.inner_key`` attribute holding a reference to the 'real' key instance this key is a proxy for, if one was obtainable, else None. ro c C s| || _ || _|| _t|�}|�� | _tt�| _d | _ zt j | j|d�| _ W n, t k rv d}| � t|�| j�� Y nX d S )N)Zkey_type� key_bytesz5Unable to derive inner_key for agent key of type {!r})r r r r r' �namer �__file__�_logger� inner_keyr Zfrom_type_stringr �logr �format)r r r r r8 �errr r r r � s � zAgentKey.__init__c O s | j j||�S r\ )r� r� )r �args�kwargsr r r r� � s z AgentKey.logc C s | j r| j �� S | jS r\ )r� r r r r r r r � s zAgentKey.asbytesc C s | j S r\ )r� r r r r �get_name� s zAgentKey.get_namec s | j d k r| j �� S t� �� S r\ )r� �get_bits�superr �� __class__r r r� � s zAgentKey.get_bitsc C s | j dkrt|��t| j |�S )zO Proxy any un-implemented methods/properties to the inner_key. N)r� �AttributeError�getattr)r r� r r r � __getattr__� s zAgentKey.__getattr__c C s | � � | jg}| jr | jjS |S r\ )r� r r� �_fields)r �fallbackr r r r� � s zAgentKey._fieldsNc C sb t � }|�t� |�| �� � |�|� |�t�|d�� | j� |�\}}|t krZt d��|� � S )Nr z key cannot be used for signing) r Zadd_byte�cSSH2_AGENTC_SIGN_REQUESTZ add_stringr Zadd_int�ALGORITHM_FLAG_MAP�getr r �SSH2_AGENT_SIGN_RESPONSEr r& )r r9 � algorithmr8 r* r+ r r r � sign_ssh_data� s zAgentKey.sign_ssh_data)ro )N)r> r? r@ rZ r r� r r� r� r� �propertyr� r� � __classcell__r r r� r r% � s r% )0rZ rT r^ r2 rm rC rV r| r� �loggingr r Zparamiko.commonr r Zparamiko.ssh_exceptionr r Zparamiko.messager Z paramiko.pkeyr r Z paramiko.utilr r r! r" r� r� ZSSH_AGENT_RSA_SHA2_256ZSSH_AGENT_RSA_SHA2_512r� �list�items�key�valuer rD rA r[ rf rp rq rz r� r� r% r r r r �<module> sH �=; +='"
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