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✏️ connection.cpython-37.pyc
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Return an arbitrary free address for the given family r )Z localhostr r z listener-)�prefix�dirr z\\.\pipe\pyc-%d-%d-� zunrecognized familyN) �tempfileZmktempr Z get_temp_dir�os�getpid�next� _mmap_counter� ValueError)�familyr r r �arbitrary_addressE s r% c C sJ t jdkr | dkr td| ��t jdkrF| dkrFtt| �sFtd| ��dS )zD Checks if the family is valid for the current environment. r r z Family %s is not recognized.r N)�sys�platformr# �hasattr�socket)r$ r r r �_validate_familyS s r* c C sT t | �tkrdS t | �tkr*| �d�r*dS t | �tks@t�| �rDdS td| ��dS )z] Return the types of the address This can be 'AF_INET', 'AF_UNIX', or 'AF_PIPE' r z\\r r z address type of %r unrecognizedN)�type�tuple�str� startswithr � is_abstract_socket_namespacer# )�addressr r r � address_type_ s r1 c @ s� e Zd ZdZd+dd�Zdd� Zdd� Zd d � Zd d � Zd d� Z e dd� �Z e dd� �Z e dd� �Z dd� Zdd� Zd,dd�Zd d � Zd-d d �Zd.d d!�Zd"d#� Zd/d%d&�Zd'd(� Zd)d*� ZdS )0�_ConnectionBaseNTc C s> |� � }|dk rtd��|s(|s(td��|| _|| _|| _d S )Nr zinvalid handlez6at least one of `readable` and `writable` must be True)� __index__r# �_handle� _readable� _writable)�self�handle�readable�writabler r r �__init__u s z_ConnectionBase.__init__c C s | j d k r| �� d S )N)r4 �_close)r7 r r r �__del__� s z_ConnectionBase.__del__c C s | j d krtd��d S )Nzhandle is closed)r4 �OSError)r7 r r r � _check_closed� s z _ConnectionBase._check_closedc C s | j std��d S )Nzconnection is write-only)r5 r> )r7 r r r �_check_readable� s z _ConnectionBase._check_readablec C s | j std��d S )Nzconnection is read-only)r6 r> )r7 r r r �_check_writable� s z _ConnectionBase._check_writablec C s" | j rd| _n| �� td��d S )NFzbad message length)r6 r5 �closer> )r7 r r r �_bad_message_length� s z#_ConnectionBase._bad_message_lengthc C s | j dkS )z True if the connection is closedN)r4 )r7 r r r �closed� s z_ConnectionBase.closedc C s | j S )z"True if the connection is readable)r5 )r7 r r r r9 � s z_ConnectionBase.readablec C s | j S )z"True if the connection is writable)r6 )r7 r r r r: � s z_ConnectionBase.writablec C s | � � | jS )z+File descriptor or handle of the connection)r? r4 )r7 r r r �fileno� s z_ConnectionBase.filenoc C s$ | j dk r z | �� W dd| _ X dS )zClose the connectionN)r4 r< )r7 r r r rB � s z_ConnectionBase.closer c C s� | � � | �� t|�}|jdkr.tt|��}t|�}|dk rFtd��||k rVtd��|dkrh|| }n&|dk rztd��n|| |kr�td��| �|||| � � dS )z,Send the bytes data from a bytes-like objectr r zoffset is negativezbuffer length < offsetNzsize is negativez buffer length < offset + size)r? rA � memoryview�itemsize�bytes�lenr# � _send_bytes)r7 �buf�offset�size�m�nr r r � send_bytes� s" z_ConnectionBase.send_bytesc C s$ | � � | �� | �t�|�� dS )zSend a (picklable) objectN)r? rA rJ �_ForkingPickler�dumps)r7 �objr r r �send� s z_ConnectionBase.sendc C sJ | � � | �� |dk r(|dk r(td��| �|�}|dkrB| �� |�� S )z7 Receive bytes data as a bytes object. Nr znegative maxlength)r? r@ r# � _recv_bytesrC �getvalue)r7 Z maxlengthrK r r r � recv_bytes� s z_ConnectionBase.recv_bytesc C s� | � � | �� t|���}|j}|t|� }|dk r>td��n||krNtd��| �� }|�� }||| k rvt|� � ��|� d� |� ||| || | � � |S Q R X dS )zq Receive bytes data into a writeable bytes-like object. Return the number of bytes read. r znegative offsetzoffset too largeN) r? r@ rF rG rI r# rU �tellr rV �seek�readinto)r7 rK rL rN rG Zbytesize�resultrM r r r �recv_bytes_into� s" z _ConnectionBase.recv_bytes_intoc C s& | � � | �� | �� }t�|�� �S )z Receive a (picklable) object)r? r@ rU rQ �loads� getbuffer)r7 rK r r r �recv� s z_ConnectionBase.recv� c C s | � � | �� | �|�S )z/Whether there is any input available to be read)r? r@ �_poll)r7 r r r r �poll� s z_ConnectionBase.pollc C s | S )Nr )r7 r r r � __enter__ s z_ConnectionBase.__enter__c C s | � � d S )N)rB )r7 �exc_type� exc_value�exc_tbr r r �__exit__ s z_ConnectionBase.__exit__)TT)r N)N)r )r` )�__name__� __module__� __qualname__r4 r; r= r? r@ rA rC �propertyrD r9 r: rE rB rP rT rW r\ r_ rb rc rg r r r r r2 r s( r2 c @ sD e Zd ZdZdZejfdd�Zdd� Zddd �Z d d � Z d d � Z dS )�PipeConnectionz� Connection class based on a Windows named pipe. Overlapped I/O is used, so the handles must have been created with FILE_FLAG_OVERLAPPED. Fc C s || j � d S )N)r4 )r7 Z _CloseHandler r r r< s zPipeConnection._closec C s� t j| j|dd�\}}zHy,|t jkrBt �|jgdt�}|tksBt�W n |� � � Y nX W d |� d�\}}X |dks|t�|t |�ks�t�d S )NT)� overlappedFr ) �_winapiZ WriteFiler4 �ERROR_IO_PENDING�WaitForMultipleObjects�eventr r �AssertionError�cancel�GetOverlappedResultrI )r7 rK �ov�err�waitresZnwrittenr r r rJ s zPipeConnection._send_bytesNc C s | j rd| _ t�� S |d kr dnt|d�}y�tj| j|dd�\}}zHy,|tjkrnt�|j gdt �}|t ksnt �W n |� � � Y nX W d |�d�\}}|dkr�t�� }|�|�� � |S |tjkr�| �||�S X W n: tk �r } z|jtjk� r�t�n� W d d }~X Y nX td��d S )NF� T)rm r z.shouldn't get here; expected KeyboardInterrupt)�_got_empty_message�io�BytesIO�minrn �ReadFiler4 ro rp rq r r rr rs rt �writer^ ZERROR_MORE_DATA�_get_more_datar> �winerror�ERROR_BROKEN_PIPE�EOFError� RuntimeError) r7 �maxsizeZbsizeru rv rw Znread�f�er r r rU & s6 zPipeConnection._recv_bytesc C s. | j st�| j�d dkr dS tt| g|��S )Nr T)ry rn � PeekNamedPiper4 �boolr )r7 r r r r ra F s zPipeConnection._pollc C s� |� � }t�� }|�|� t�| j�d }|dks6t�|d k rVt|�| |krV| � � tj | j|dd�\}}|� d�\}}|dks�t�||ks�t�|�|� � � |S )Nr r T)rm ) r^ rz r{ r~ rn r� r4 rr rI rC r} rt )r7 ru r� rK r� �leftrv Zrbytesr r r r L s z PipeConnection._get_more_data)N) rh ri rj �__doc__ry rn � CloseHandler< rJ rU ra r r r r r rl s rl c @ s| e Zd ZdZer,ejfdd�ZejZ ej Z ne j fdd�Ze jZ e jZ e fdd�Ze fdd�Zd d � Zdd d �Zdd� Zd S )� Connectionzo Connection class based on an arbitrary file descriptor (Unix only), or a socket handle (Windows). c C s || j � d S )N)r4 )r7 r< r r r r< c s zConnection._closec C s || j � d S )N)r4 )r7 r< r r r r< h s c C s< t |�}x.|| j|�}||8 }|dkr(P ||d � }q W d S )Nr )rI r4 )r7 rK r~ � remainingrO r r r �_sendm s zConnection._sendc C sf t �� }| j}|}xN|dkr`|||�}t|�}|dkrL||krDt�ntd��|�|� ||8 }qW |S )Nr z got end of file during message)rz r{ r4 rI r� r> r~ )r7 rM �readrK r8 r� �chunkrO r r r �_recvv s zConnection._recvc C sD t |�}t�d|�}|dkr2| �|� | �|� n| �|| � d S )Nz!ii @ )rI �structZpackr� )r7 rK rO �headerr r r rJ � s zConnection._send_bytesNc C s: | � d�}t�d|�� �\}|d k r0||kr0d S | � |�S )N� z!i)r� r� ZunpackrV )r7 r� rK rM r r r rU � s zConnection._recv_bytesc C s t | g|�}t|�S )N)r r� )r7 r �rr r r ra � s zConnection._poll)N)rh ri rj r� rn �_multiprocessingZ closesocketr< rT Z_writer_ Z_readr rB r~ r� r� r� rJ rU ra r r r r r� \ s r� c @ sR e Zd ZdZddd�Zdd� Zdd � Zed d � �Zed d � �Z dd� Z dd� Z dS )r z� Returns a listener object. This is a wrapper for a bound socket which is 'listening' for connections, or for a Windows named pipe. Nr c C sp |p|rt |�pt}|p t|�}t|� |dkr>t||�| _nt|||�| _|d k rft|t�sft d��|| _ d S )Nr z authkey should be a byte string) r1 �default_familyr% r* � PipeListener� _listener�SocketListener� isinstancerH � TypeError�_authkey)r7 r0 r$ �backlog�authkeyr r r r; � s zListener.__init__c C s> | j dkrtd��| j �� }| jr:t|| j� t|| j� |S )zz Accept a connection on the bound socket or named pipe of `self`. Returns a `Connection` object. Nzlistener is closed)r� r> �acceptr� �deliver_challenge�answer_challenge)r7 �cr r r r� � s zListener.acceptc C s | j }|dk r d| _ |�� dS )zA Close the bound socket or named pipe of `self`. N)r� rB )r7 Zlistenerr r r rB � s zListener.closec C s | j jS )N)r� �_address)r7 r r r r0 � s zListener.addressc C s | j jS )N)r� �_last_accepted)r7 r r r � last_accepted� s zListener.last_acceptedc C s | S )Nr )r7 r r r rc � s zListener.__enter__c C s | � � d S )N)rB )r7 rd re rf r r r rg � s zListener.__exit__)NNr N) rh ri rj r� r; r� rB rk r0 r� rc rg r r r r r � s c C sh |p t | �}t|� |dkr&t| �}nt| �}|dk rHt|t�sHtd��|dk rdt||� t||� |S )z= Returns a connection to the address of a `Listener` r Nz authkey should be a byte string) r1 r* � PipeClient� SocketClientr� rH r� r� r� )r0 r$ r� r� r r r r � s Tc C sj | r>t �� \}}|�d� |�d� t|�� �}t|�� �}n$t�� \}}t|dd�}t|dd�}||fS )zL Returns pair of connection objects at either end of a pipe TF)r: )r9 )r) Z socketpair� setblockingr� �detachr �pipe)�duplex�s1�s2�c1�c2Zfd1Zfd2r r r r � s c C s� t d�}| r*tj}tjtjB }tt }}ntj}tj}dt }}t�||tjB tj B tj tj B tj B d||tj tj�}t�||dtjtjtjtj�}t�|tj dd� tj|dd�}|�d�\} } | dks�t�t|| d�} t|| d�} | | fS ) zL Returns pair of connection objects at either end of a pipe r r r NT)rm )r: )r9 )r% rn �PIPE_ACCESS_DUPLEX� GENERIC_READ� GENERIC_WRITE�BUFSIZEZPIPE_ACCESS_INBOUND�CreateNamedPipe�FILE_FLAG_OVERLAPPED� FILE_FLAG_FIRST_PIPE_INSTANCE�PIPE_TYPE_MESSAGE�PIPE_READMODE_MESSAGE� PIPE_WAIT�NMPWAIT_WAIT_FOREVER�NULL� CreateFile� OPEN_EXISTING�SetNamedPipeHandleState�ConnectNamedPipert rr rl ) r� r0 Zopenmode�accessZobsizeZibsizeZh1Zh2rm �_rv r� r� r r r r s4 c @ s* e Zd ZdZd dd�Zdd� Zdd� Zd S ) r� zO Representation of a socket which is bound to an address and listening r c C s� t � tt |��| _yRtjdkr2| j�t jt jd� | j�d� | j� |� | j� |� | j� � | _ W n t k r� | j�� � Y nX || _d | _|dkr�t�|�s�tj| tj|fdd�| _nd | _d S )N�posixr Tr r )�args� exitpriority)r) �getattr�_socketr �nameZ setsockoptZ SOL_SOCKETZ SO_REUSEADDRr� ZbindZlistenZ getsocknamer� r> rB Z_familyr� r r/ �Finalize�unlink�_unlink)r7 r0 r$ r� r r r r; = s$ zSocketListener.__init__c C s& | j �� \}| _|�d� t|�� �S )NT)r� r� r� r� r� r� )r7 �sr r r r� V s zSocketListener.acceptc C s0 z| j �� W d | j}|d k r*d | _|� X d S )N)r� rB r� )r7 r� r r r rB [ s zSocketListener.closeN)r )rh ri rj r� r; r� rB r r r r r� 9 s r� c C sD t | �}t�tt|���"}|�d� |�| � t|�� �S Q R X dS )zO Return a connection object connected to the socket given by `address` TN)r1 r) r� r� Zconnectr� r� )r0 r$ r� r r r r� e s r� c @ s8 e Zd ZdZd dd�Zd dd�Zdd � Zed d � �ZdS )r� z0 Representation of a named pipe Nc C sL || _ | jdd�g| _d | _t�d| j � tj| tj| j| j fdd�| _ d S )NT)�firstz listener created with address=%rr )r� r� ) r� � _new_handle� _handle_queuer� r � sub_debugr� r� �_finalize_pipe_listenerrB )r7 r0 r� r r r r; y s zPipeListener.__init__Fc C sH t jt jB }|r|t jO }t �| j|t jt jB t jB t j t t t j t j �S )N) rn r� r� r� r� r� r� r� r� ZPIPE_UNLIMITED_INSTANCESr� r� r� )r7 r� �flagsr r r r� � s zPipeListener._new_handlec C s� | j �| �� � | j �d�}ytj|dd�}W n0 tk r^ } z|jtjkrN� W d d }~X Y n\X z<yt� |j gdt �}W n |� � t� |� � Y nX W d |�d�\}}|dks�t�X t|�S )Nr T)rm F)r� �appendr� �poprn r� r> r� Z ERROR_NO_DATArp rq r rs r� rt rr rl )r7 r8 ru r� �resr� rv r r r r� � s" zPipeListener.acceptc C s( t �d|� x| D ]}t�|� qW d S )Nz closing listener with address=%r)r r� rn r� )Zqueuer0 r8 r r r r� � s z$PipeListener._finalize_pipe_listener)N)F) rh ri rj r� r; r� r� � staticmethodr� r r r r r� u s r� c C s� t � }x~y6t�| d� t�| tjtjB dtjtjtjtj�}W n> t k r| } z |j tj tj fksjt |�rl� W dd}~X Y qX P qW � t�|tjdd� t|�S )zU Return a connection object connected to the pipe given by `address` i� r N)r rn Z WaitNamedPiper� r� r� r� r� r� r> r� ZERROR_SEM_TIMEOUTZERROR_PIPE_BUSYr r� r� rl )r0 r �hr� r r r r� � s" r� � s #CHALLENGE#s #WELCOME#s #FAILURE#c C s� dd l }t|t�s$td�t|����t�t�}| � t | � |� ||d�� � }| � d�}||krl| � t� n| � t� td��d S )Nr z Authkey must be bytes, not {0!s}�md5� zdigest received was wrong)�hmacr� rH r# �formatr+ r �urandom�MESSAGE_LENGTHrP � CHALLENGE�new�digestrW �WELCOME�FAILUREr )� connectionr� r� �messager� �responser r r r� � s r� c C s� dd l }t|t�s$td�t|����| �d�}|d tt�� tksNt d| ��|tt�d � }|� ||d�� � }| � |� | �d�}|t kr�td��d S )Nr z Authkey must be bytes, not {0!s}r� z message = %rr� zdigest sent was rejected)r� r� rH r# r� r+ rW rI r� rr r� r� rP r� r )r� r� r� r� r� r� r r r r� � s r� c @ s$ e Zd Zdd� Zdd� Zdd� ZdS )�ConnectionWrapperc C s: || _ || _|| _x"dD ]}t||�}t| ||� qW d S )N)rE rB rb rW rP )�_conn�_dumps�_loadsr� �setattr)r7 �connrR r] �attrrS r r r r; 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Returns list of those objects in object_list which are ready/readable. Nr i� g �?rE T� )� r� Fry c 3 s | ]}� | V qd S )Nr )�.0r� )�waithandle_to_objr r � <genexpr>| s zwait.<locals>.<genexpr>c s g | ]}|� kr|�qS r r )r� �o)� ready_objectsr r � <listcomp>} s zwait.<locals>.<listcomp>)r �intr� �setr� �AttributeErrorr3 rn r} r> r� � _ready_errorsro r� rq r& Zgetwindowsversionrt r( ry �addr� �keysrs ZERROR_OPERATION_ABORTED�update) � object_listr Zov_listZ ready_handlesr rE ru rv r� r� r )r r r r 1 sh � PollSelectorc C s� t � �x}x| D ]}|�|tj� qW |dk r8t�� | }x@|�|�}|rVdd� |D �S |dk r:|t�� }|dk r:|S q:W W dQ R X dS )z� Wait till an object in object_list is ready/readable. Returns list of those objects in object_list which are ready/readable. 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