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Editing: sftp_server.cpython-38.pyc
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Since this is a `.SubsystemHandler`, it can be (and is meant to be) set as the handler for ``"sftp"`` requests. Use `.Transport.set_subsystem_handler` to activate this class. c O sh t �| � t�| |||� |�� }t�|�� d �| _|�� | _ d| _ i | _ i | _ ||f|�|�| _ dS )a� The constructor for SFTPServer is meant to be called from within the `.Transport` as a subsystem handler. ``server`` and any additional parameters or keyword parameters are passed from the original call to `.Transport.set_subsystem_handler`. :param .Channel channel: channel passed from the `.Transport`. :param str name: name of the requested subsystem. :param .ServerInterface server: the server object associated with this channel and subsystem :param sftp_si: a subclass of `.SFTPServerInterface` to use for handling individual requests. z.sftp� N)r �__init__r Z get_transportr Z get_loggerZget_log_channel�loggerZ get_hexdumpZ ultra_debug� next_handle� file_table� folder_table�server)�self�channel�namer< Zsftp_si�args�kwargs� transport� rC �E/opt/alt/python38/lib/python3.8/site-packages/paramiko/sftp_server.pyr7 _ s zSFTPServer.__init__c s^ t t|�t�r:|D ]$}t� �|d| j�� d | � qn t� �|d| j�� d | � d S )Nz[chan z] )� issubclass�type�list�super�_log�sock�get_name)r= �level�msg�m�� __class__rC rD rI � s $zSFTPServer._logc C s8 || _ | �td�|�� | �� | j�� z| �� \}}W nl tk r\ | �td� Y d S t k r� } z.| �tdt |� � | �tt � � � W Y �d S d }~X Y nX t |�}|�� }z| �|||� W q* t k �r0 } zF| �tdt |� � | �tt � � � z| �|t� W n Y nX W 5 d }~X Y q*X q*d S )Nz#Started sftp server on channel {!r}zEOF -- end of sessionzException on channel: z Exception in server processing: )rJ rI r �formatZ_send_server_versionr< Zsession_startedZ _read_packet�EOFError� Exception�strr Z tb_stringsr �get_int�_process� _send_statusr ) r= r? rB r> �t�data�erM �request_numberrC rC rD �start_subsystem� s0 zSFTPServer.start_subsystemc sT | j �� t� �� | j�� D ] }|�� q | j�� D ] }|�� q6i | _i | _d S )N)r< Z session_endedrH �finish_subsystemr: �values�closer; )r= �frO rC rD r] � s zSFTPServer.finish_subsystemc C s. | t jkrtS | t jks"| t jkr&tS tS dS )au Convert an errno value (as from an ``OSError`` or ``IOError``) into a standard SFTP result code. This is a convenience function for trapping exceptions in server code and returning an appropriate result. :param int e: an errno code, as from ``OSError.errno``. :return: an `int` SFTP error code like ``SFTP_NO_SUCH_FILE``. N)�errno�EACCESr �ENOENT�ENOTDIRr r )rZ rC rC rD � convert_errno� s zSFTPServer.convert_errnoc C s� t jdkrB|j|j@ r$t�| |j� |j|j@ rBt�| |j |j � |j|j @ rbt� | |j |jf� |j|j@ r�t| d��}|�|j� W 5 Q R X dS )a: Change a file's attributes on the local filesystem. The contents of ``attr`` are used to change the permissions, owner, group ownership, and/or modification & access time of the file, depending on which attributes are present in ``attr``. This is meant to be a handy helper function for translating SFTP file requests into local file operations. :param str filename: name of the file to alter (should usually be an absolute path). :param .SFTPAttributes attr: attributes to change. �win32zw+N)�sys�platform�_flagsZFLAG_PERMISSIONS�os�chmod�st_modeZ FLAG_UIDGID�chown�st_uid�st_gidZ FLAG_AMTIME�utime�st_atime�st_mtimeZ FLAG_SIZE�open�truncate�st_size)�filename�attrr` rC rC rD � set_file_attr� s zSFTPServer.set_file_attrc G s� t � }|�|� |D ]v}t|t�r.|�|� qt|t�rD|�|� qt|ttf�r^|�|� qt |�t krv|� |� qt d� |t |����q| �||� d S )Nz unknown type for {!r} type {!r})r �add_int� isinstancer Z add_int64�intrT �bytes� add_stringrF r �_packrS rQ � _send_packet)r= r[ rX r@ rM �itemrC rC rD � _response� s �zSFTPServer._responseFc C sz t t|�t�s | �||� d S |�td�| j��� | jd7 _|rV|| j|� � < n|| j |� � < | � |t |� � � d S )Nzhx{:d}r6 ) rE rF � SFTPHandlerW Z _set_namer rQ r9 r; Z _get_namer: r� r )r= r[ �handle�folderrC rC rD �_send_handle_response� s z SFTPServer._send_handle_responseNc C sD |d kr.z t | }W n tk r, d}Y nX | �|t||d� d S )N�Unknown� )r � IndexErrorr� r )r= r[ �code�descrC rC rD rW s zSFTPServer._send_statusc C sL | j �|�}tt|�t�r<t� }|�|� | �||d� d S | �||� d S )NT) r< Z list_folderrE rF rG r� Z _set_filesr� rW )r= r[ �path�respr� rC rC rD � _open_folder s zSFTPServer._open_folderc C s| |� � }t|�dkr$| �|t� d S t� }|�|� |�t|�� |D ]$}|�|j� |�|� |�|� qF| � t |� d S )Nr ) Z_get_next_files�lenrW r r ry r} rv r~ r r )r= r[ r� �flistrM rw rC rC rD � _read_folder s zSFTPServer._read_folderc C s� |� � }|�� }|�� }|�� }|�� }|| jkrD| �|td� d S | j| }|D ] } | tkrR| } t| } q�qR| �|td� d S |dkr�|� � } t t | �t �s�| �|| d� d S | j | }|dkr�|}|dk r�| �|td� d S t� } |}||| k �r�t||| | �}t|d�}d}| � }||k �rv|�||�}t|t��sT| �||d� d S |�|� |t|�7 }||7 }�q | |�� 7 } q�t� }|�|� |�d � |�| � |�| � | �t|� d S ) N�Invalid handlez No supported hash types foundr zUnable to stat file� zBlock size too smalli zUnable to hash file� check-file)� get_binaryZget_list� get_int64rU r: rW r � _hash_classr �statrE rF r ru r| �min�readrz �updater� �digestr ry r} Z add_bytesr r )r= r[ rM r� Zalg_list�start�length� block_sizer` �xZalgname�alg�stZsum_out�offsetZblocklenZchunklen�countZhash_objrY rC rC rD � _check_file# s� � � � � zSFTPServer._check_filec C sz |t @ r|t@ rtj}n|t@ r(tj}ntj}|t@ r@|tjO }|t@ rR|tj O }|t @ rd|tj O }|t @ rv|tj O }|S )z;convert SFTP-style open() flags to Python's os.open() flags)r r rj �O_RDWR�O_WRONLY�O_RDONLYr �O_APPENDr �O_CREATr �O_TRUNCr �O_EXCL)r= Zpflags�flagsrC rC rD �_convert_pflagsf s zSFTPServer._convert_pflagsc C s� | � td�t| �� |tkrZ|�� }| �|�� �}t� |�}| � || j � |||�� �nb|t kr�|�� }|| jkr�| j|= | �|t� d S || jkr�| j| �� | j|= | �|t� d S | �|td� �n�|tk�rl|�� }|�� }|�� } || jk�r| �|td� d S | j| �|| �} t| ttf��r\t| �dk�rL| �|t � n| � |t | � n | �|| � �nP|t k�r�|�� }|�� }|�� } || jk�r�| �|td� d S | �|| j| � || �� �n�|t!k�r�|�� }| �|| j �"|�� �n�|t#k�r(|�� } |�� } | �|| j �$| | �� �n�|t%k�r^|�� }t� |�}| �|| j �&||�� �n^|t'k�r�|�� }| �|| j �(|�� �n4|t)k�r�|�� }| �*||� d S |t+k�r�|�� }|| jk�r�| �|td� d S | j| } | �,|| � �n�|t-k�rB|�� }| j �.|�}t/t0|�t��r2| � |t1|� n | �||� �nz|t2k�r�|�� }| j �3|�}t/t0|�t��r�| � |t1|� n | �||� �n,|t4k�r�|�� }|| jk�r�| �|td� d S | j| �.� }t/t0|�t��r�| � |t1|� n | �||� �n�|t5k�r4|�� }t� |�}| �|| j �6||�� �n�|t7k�r�|�� }t� |�}|| jk�rn| � |td� d S | �|| j| �6|�� �n2|t8k�r�|�� }| j �9|�}t|ttf��r�| � |t:d|dt� � n | �||� n�|t;k�r|�� }|�� }| �|| j �<||�� n�|t=k�rF|�� }| j �>|�}| � |t:d|dt� � nv|t?k�r�|�� }|dk�rp| �@||� n>|dk�r�|�� } |�� } | �|| j �A| | �� n | �|tB� n | �|tB� d S )Nz Request: {}r� r r6 r� r� zposix-rename@openssh.com)CrI r rQ r r Zget_textr� rU r Z _from_msgr� r< rs r r� r; rW r r: r_ r r! r� r� rz r| rT r� r r� r" r# �writer$ �remover% �renamer& �mkdirr' �rmdirr( r� r) r� r* r� rE rF r+ r, �lstatr- r. Zchattrr/ r0 �readlinkr r1 �symlinkr2 � canonicalizer3 r� Z posix_renamer4 )r= rX r[ rM r� r� rw r� r� r� rY Zoldpath�newpathr� r� � target_pathZrpath�tagrC rC rD rV x s` � � � � � � � � � � � � � �zSFTPServer._process)F)N)�__name__� __module__� __qualname__�__doc__r r7 rI r\ r] � staticmethodre rx r� r� rW r� r� r� r� rV � __classcell__rC rC rO rD r5 X s$ � " Cr5 )r� )Cr� rj ra rg �hashlibr r Zparamikor Z paramiko.sftpr r r r r r Zparamiko.sftp_sir Zparamiko.sftp_attrr Zparamiko.commonr Zparamiko.serverr Z paramiko.utilr r r r r r r r r r r r r r r r r r r! r" r# r$ r% r& r' r( r) r* r+ r, r- r. r/ r0 r1 r2 r3 r4 r� r5 Zparamiko.sftp_handler� rC rC rC rD �<module> s$ �( D
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