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a s�h�$ � @ sV d Z ddlZddlmZ ddlmZ ddlmZmZm Z ddl m Z G dd� d�Z dS ) z& Implementation of an SSH2 "message". � N)�BytesIO)�util)� zero_byte�max_byte�one_byte)�uc @ s� e Zd ZdZdZd>dd�Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dd� Z dd� Z dd� Zdd� Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� Zd&d'� Zd(d)� Zd*d+� Zd,d-� Zd.d/� Zd0d1� Zd2d3� Z d4d5� Z d6d7� Z d8d9� Z d:d;� Z d<d=� Z!dS )?�Messagea~ An SSH2 message is a stream of bytes that encodes some combination of strings, integers, bools, and infinite-precision integers. This class builds or breaks down such a byte stream. Normally you don't need to deal with anything this low-level, but it's exposed for people implementing custom extensions, or features that paramiko doesn't support yet. l ~ Nc C s |durt |�| _nt � | _dS )z� Create a new SSH2 message. :param bytes content: the byte stream to use as the message content (passed in only when decomposing a message). N)r �packet)�self�content� r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/paramiko/message.py�__init__, s zMessage.__init__c C s | � � S �N)�asbytes�r r r r � __bytes__9 s zMessage.__bytes__c C s dt | j�� � d S )zP Returns a string representation of this object, for debugging. zparamiko.Message(�))�reprr �getvaluer r r r �__repr__< s zMessage.__repr__c C s | j �� S )zO Return the byte stream content of this Message, as a `bytes`. )r r r r r r r C s zMessage.asbytesc C s | j �d� dS )zk Rewind the message to the beginning as if no items had been parsed out of it yet. r N)r �seekr r r r �rewindI s zMessage.rewindc C s$ | j �� }| j �� }| j �|� |S )zk Return the `bytes` of this message that haven't already been parsed and returned. )r �tell�readr )r �position� remainderr r r � get_remainderP s zMessage.get_remainderc C s | j �� }| �� | j �|�S )z� Returns the `bytes` of this message that have been parsed and returned. The string passed into a message's constructor can be regenerated by concatenating ``get_so_far`` and `get_remainder`. )r r r r )r r r r r � get_so_farZ s zMessage.get_so_farc C sD | j �|�}d}t|�| k r(|k r@n n|t|t|� S |S )a Return the next ``n`` bytes of the message, without decomposing into an int, decoded string, etc. Just the raw bytes are returned. Returns a string of ``n`` zero bytes if there weren't ``n`` bytes remaining in the message. i )r r �lenr )r �n�bZ max_pad_sizer r r � get_bytesd s zMessage.get_bytesc C s | � d�S )a Return the next byte of the message, without decomposing it. This is equivalent to `get_bytes(1) <get_bytes>`. :return: the next (`bytes`) byte of the message, or ``b' '`` if there aren't any bytes remaining. � )r" r r r r �get_byteq s zMessage.get_bytec C s | � d�}|tkS )z2 Fetch a boolean from the stream. r# )r" r �r r! r r r � get_boolean| s zMessage.get_booleanc C s> | � d�}|tkr t�| �� �S || � d�7 }t�d|�d S )zZ Fetch an int from the stream. :return: a 32-bit unsigned `int`. r# � �>Ir )r" r r � inflate_long� get_binary�struct�unpack)r �byter r r �get_adaptive_int� s zMessage.get_adaptive_intc C s t �d| �d��d S )z/ Fetch an int from the stream. r( � r �r+ r, r" r r r r �get_int� s zMessage.get_intc C s t �d| �d��d S )zj Fetch a 64-bit int from the stream. :return: a 64-bit unsigned integer (`int`). �>Q� r r0 r r r r � get_int64� s zMessage.get_int64c C s t �| �� �S )zr Fetch a long int (mpint) from the stream. :return: an arbitrary-length integer (`int`). )r r) r* r r r r � get_mpint� s zMessage.get_mpintc C s | � | �� �S )z� Fetch a "string" from the stream. This will actually be a `bytes` object, and may contain unprintable characters. (It's not unheard of for a string to contain another byte-stream message.) �r" r1 r r r r � get_string� s zMessage.get_stringc C s t | �� �S )z� Fetch a Unicode string from the stream. This currently operates by attempting to encode the next "string" as ``utf-8``. )r r7 r r r r �get_text� s zMessage.get_textc C s | � | �� �S )z@ Alias for `get_string` (obtains a bytestring). r6 r r r r r* � s zMessage.get_binaryc C s | � � �d�S )z� Fetch a list of `strings <str>` from the stream. These are trivially encoded as comma-separated values in a string. �,)r8 �splitr r r r �get_list� s zMessage.get_listc C s | j �|� | S )zj Write bytes to the stream, without any formatting. :param bytes b: bytes to add �r �writer% r r r � add_bytes� s zMessage.add_bytesc C s | j �|� | S )zq Write a single byte to the stream, without any formatting. :param bytes b: byte to add r< r% r r r �add_byte� s zMessage.add_bytec C s" |r| j �t� n | j �t� | S )za Add a boolean value to the stream. :param bool b: boolean value to add )r r= r r r% r r r � add_boolean� s zMessage.add_booleanc C s | j �t�d|�� | S �zU Add an integer to the stream. :param int n: integer to add r( �r r= r+ �pack�r r r r r �add_int� s zMessage.add_intc C s@ |t jkr(| j�t� | �t�|�� n| j�t� d|�� | S rA ) r �big_intr r= r � add_stringr � deflate_longr+ rC rD r r r �add_adaptive_int� s zMessage.add_adaptive_intc C s | j �t�d|�� | S )zX Add a 64-bit int to the stream. :param int n: long int to add r2 rB rD r r r � add_int64� s zMessage.add_int64c C s | � t�|�� | S )z� Add a long int to the stream, encoded as an infinite-precision integer. This method only works on positive numbers. :param int z: long int to add )rG r rH )r �zr r r � add_mpint s zMessage.add_mpintc C s( t �|�}| �t|�� | j�|� | S )z[ Add a bytestring to the stream. :param byte s: bytestring to add )r r rE r r r= )r �sr r r rG s zMessage.add_stringc C s | � d�|�� | S )z� Add a list of strings to the stream. They are encoded identically to a single string of values separated by commas. (Yes, really, that's how SSH2 does it.) :param l: list of strings to add r9 )rG �join)r �lr r r �add_list s zMessage.add_listc C sN t |�tu r| �|�S t|t�r*| �|�S t |�tu r@| �|�S | �|�S d S r ) �type�boolr@ � isinstance�intrI �listrP rG )r �ir r r �_add' s z Message._addc G s |D ]}| � |� qdS )a Add a sequence of items to the stream. The values are encoded based on their type: bytes, str, int, bool, or list. .. warning:: Longs are encoded non-deterministically. Don't use this method. :param seq: the sequence of items N)rW )r �seq�itemr r r �add3 s z Message.add)N)"�__name__� __module__� __qualname__�__doc__rF r r r r r r r r" r$ r& r. r1 r4 r5 r7 r8 r* r; r> r? r@ rE rI rJ rL rG rP rW rZ r r r r r s> r ) r^ r+ �ior Zparamikor Zparamiko.commonr r r Z paramiko.utilr r r r r r �<module> s
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