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o �b�. � @ s� d Z ddlZddlZddlmZ ddlmZ ddlmZ ddl m Z ddl m Z m Z mZmZ G dd � d e jej�ZG d d � d e j�ZG d d � d e�ZG dd� deje j�ZdS )zH I hold resource classes and helper classes that deal with CGI scripts. � N)�protocol)�Logger)�filepath)�pb)�http�resource�server�staticc @ s$ e Zd Zdd� Zdd� Zdd� ZdS )� CGIDirectoryc C s t j�| � tj�| |� d S �N)r �Resource�__init__r �FilePath)�self�pathname� r �3/usr/lib/python3/dist-packages/twisted/web/twcgi.pyr s zCGIDirectory.__init__c C s6 | � |�}|�� s tjjS |�� rt|j�S t|j�S r ) �child�existsr �File� childNotFound�isdirr �path� CGIScript)r r �request�fnpr r r �getChild s zCGIDirectory.getChildc C s t �d�}|�|�S )Nz1CGI directories do not support directory listing.)r � NoResource�render)r r �notFoundr r r r $ s � zCGIDirectory.renderN)�__name__� __module__� __qualname__r r r r r r r r s r c @ s2 e Zd ZdZdZd dd�Zdd� Zg fdd �ZdS ) r z� L{CGIScript} is a resource which runs child processes according to the CGI specification. The implementation is complex due to the fact that it requires asynchronous IPC with an external process with an unpleasant protocol. � Nc C s$ || _ |du r ddlm} || _dS )zA Initialize, with the name of a CGI script file. Nr )�reactor)�filename�twisted.internetr$ �_reactor)r r% �registryr$ r r r r 6 s zCGIScript.__init__c C s� dd� |j� }|�� �d�d }tj|d|jt|�� j �|j || j |j d� }|� � j}|dur4||d< |j}|rBdd� |� |d < t|d �r`|j�dd � |j�� }|j�dd� t|�|d < z|j �d �}W n tyw d|d< g } Y n w |j |d d� } |d< d| v r�g } n dd� | �d�D �} |�� �� D ]\} } | �dd��� } | dvr�d| } | || < q�tj�� D ] \}}||vr�|||< q�| � ||| � tj S )a Do various things to conform to the CGI specification. I will set up the usual slew of environment variables, then spin off a process. @type request: L{twisted.web.http.Request} @param request: An HTTP request. � /� :r zCGI/1.1) �SERVER_SOFTWARE� SERVER_NAME�GATEWAY_INTERFACE�SERVER_PROTOCOL� SERVER_PORT�REQUEST_METHOD� SCRIPT_NAME�SCRIPT_FILENAME� REQUEST_URIN� REMOTE_ADDR�/� PATH_INFO�content� �CONTENT_LENGTH� ?� � QUERY_STRINGr# � =c S s g | ] }t j�|�� ��qS r )�urllib�parse�unquote�decode)�.0�xr r r � <listcomp>s s z$CGIScript.render.<locals>.<listcomp>� +� -� _)s content-types content-lengths proxys HTTP_) �join�prepath�getRequestHostname�splitr �version� clientproto�str�getHost�port�methodr% �uri�getClientAddress�host�postpath�hasattrr7 �seek�tell�index� ValueError� getAllHeaders�items�replace�upper�os�environ� runProcess� NOT_DONE_YET)r r � scriptName� serverName�env�ip�pp�length�qindex�qargs�qs�title�header�envname�key�valuer r r r B sX � � �zCGIScript.renderc C s4 t |�}| j�|| j| jg| |tj�| j�� dS )aI Run the cgi script. @type env: A L{dict} of L{str}, or L{None} @param env: The environment variables to pass to the process that will get spawned. See L{twisted.internet.interfaces.IReactorProcess.spawnProcess} for more information about environments and process creation. @type request: L{twisted.web.http.Request} @param request: An HTTP request. @type qargs: A L{list} of L{str} @param qargs: The command line arguments to pass to the process that will get spawned. N)�CGIProcessProtocolr' � spawnProcessr% r_ r �dirname�r re r rj �pr r r ra � s �zCGIScript.runProcess)NN)r r! r" �__doc__�isLeafr r ra r r r r r + s Ar c @ s e Zd ZdZdZg fdd�ZdS )�FilteredScripta I am a special version of a CGI script, that uses a specific executable. This is useful for interfacing with other scripting languages that adhere to the CGI standard. My C{filter} attribute specifies what executable to run, and my C{filename} init parameter describes which script to pass to the first argument of that script. To customize me for a particular location of a CGI interpreter, override C{filter}. @type filter: L{str} @ivar filter: The absolute path to the executable. z /usr/bin/catc C s8 t |�}| j�|| j| j| jg| |tj�| j�� dS )ad Run a script through the C{filter} executable. @type env: A L{dict} of L{str}, or L{None} @param env: The environment variables to pass to the process that will get spawned. See L{twisted.internet.interfaces.IReactorProcess.spawnProcess} for more information about environments and process creation. @type request: L{twisted.web.http.Request} @param request: An HTTP request. @type qargs: A L{list} of L{str} @param qargs: The command line arguments to pass to the process that will get spawned. N)rq r' rr �filterr% r_ r rs rt r r r ra � s �zFilteredScript.runProcessN)r r! r" rv ry ra r r r r rx � s rx c @ s� e Zd ZdZdZdZdZe� ZdZ dd� Z dd� Z d d � Z d d � Z d d� Zdd� Zdd� Zdd� Zdd� Zdd� Zdd� Zdd � Zd S ) rq r# r � Fc C � | � � d S r )�resumeProducing�r �issuerr r r �view_resumeProducing� � z'CGIProcessProtocol.view_resumeProducingc C r{ r )�pauseProducingr} r r r �view_pauseProducing� r� z&CGIProcessProtocol.view_pauseProducingc C r{ r )� stopProducingr} r r r �view_stopProducing� r� z%CGIProcessProtocol.view_stopProducingc C � | j �� d S r )� transportr| �r r r r r| � � z"CGIProcessProtocol.resumeProducingc C r� r )r� r� r� r r r r� � r� z!CGIProcessProtocol.pauseProducingc C r� r )r� �loseConnectionr� r r r r� � r� z CGIProcessProtocol.stopProducingc C s || _ | j �� �| j� d S r )r � notifyFinish�addBoth� _finished)r r r r r r � s zCGIProcessProtocol.__init__c C sH | j �| d� | j j�dd� | j j�� }|r | j�|� | j�� d S )Nr# r )r �registerProducerr7 rW �readr� �write� closeStdin)r r7 r r r �connectionMade� s z!CGIProcessProtocol.connectionMadec C s | j | | _ d S r )� errortext)r �errorr r r � errReceived� s z CGIProcessProtocol.errReceivedc C s� | j r�| j| }g }dD ]}|�|�}|dkr |�||f� q |r�d| j_|�� |d \}}|d|� | _|dt|�d � }| j�|�}|D ]b}|�d�} | dkr\| j j d|d� qH|d| � � � } || d d� } | d krw| j� t j� | d kr�z t| dd � �} W n ty� | j � d � Y qHw | j� | � qH| � � d vr�| jj�| | � qH||t|� d� }d| _ | j r�|| _| j s�| j�|� dS dS )z) Handle a chunk of input )s s s s ���Nr r8 s : z)ignoring malformed CGI header: {header!r})rm s locations status� zmalformed status header)s servers date)�handling_headers� headertext�find�appendr �defaultContentType�sort�lenrK �_logr� �lower�setResponseCoder �FOUND�int� BaseException�responseHeaders� addRawHeaderr� ) r �output�text� headerEnds� delimiter� headerend� linebreak�headersrm �br� headerName� headerText� statusNumr r r � outReceived� sX � � � ���z CGIProcessProtocol.outReceivedc C s� |j jdkr| jjd| jj|j jd� | jr"| jjd| jj| jd� | jrD| jjd| jj| jd� | j sD| j� t � t jdd ��| j�� | j sS| j�� | j�� d S d S ) Nr z*CGI {uri} exited with exit code {exitCode})rR �exitCodez"Errors from CGI {uri}: {errorText})rR � errorTextz/Premature end of headers in {uri}: {headerText})rR r� zCGI Script Errorz Premature end of script headers.)rp r� r� r� r rR r� r� r� �_requestFinishedr� r � ErrorPager �INTERNAL_SERVER_ERRORr �unregisterProducer�finish)r �reasonr r r � processEnded0 s> ����� �z CGIProcessProtocol.processEndedc C s d| _ dS )zc Record the end of the response generation for the request being serviced. TN)r� )r �ignoredr r r r� Q s z CGIProcessProtocol._finishedN)r r! r" r� �headers_writtenr� r� r r� r� r r� r� r| r� r� r r� r� r� r� r� r r r r rq � s& : !rq )rv r_ r> r& r �twisted.loggerr �twisted.pythonr �twisted.spreadr � twisted.webr r r r r r r r rx �ProcessProtocol�Viewablerq r r r r �<module> s s-
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