a$ddlZddlZddlZddlmZddlZddlZd\ZZ ddlZddl m Z ddl m Z Gdde Zy#e$r Z e ZYdZ [ $dZ [ wwxYw)N)select)NN)ProxyCommandFailure)ClosingContextManagercNeZdZdZdZdZdZdZedZ edZ dZ y ) ProxyCommanda Wraps a subprocess running ProxyCommand-driven programs. This class implements a the socket-like interface needed by the `.Transport` and `.Packetizer` classes. Using this class instead of a regular socket makes it possible to talk with a Popen'd command that will proxy traffic between the client and a server hosted in another machine. Instances of this class may be used as context managers. ctttj||_tj |jtj tj tj d|_d|_y)a Create a new CommandProxy instance. The instance created by this class can be passed as an argument to the `.Transport` class. :param str command_line: the command that should be executed and used as the proxy. Nr)stdinstdoutstderrbufsize) subprocesssubprocess_import_errorshlexsplitcmdPopenPIPEprocesstimeout)self command_lines .lib/python3.12/site-packages/paramiko/proxy.py__init__zProxyCommand.__init__3sZ  ) );;|,!'' HH//????    c |jjj|t|S#t$r4}t dj |j |jd}~wwxYw)z Write the content received from the SSH client to the standard input of the forked command. :param str content: string to be sent to the forked command  N) rr writeIOErrorrjoinrstrerrorlen)rcontentes rsendzProxyCommand.sendGs` F LL   $ $W -7|  F &chhtxx&8!**E E  Fs%2 A//A**A/c d}tj}t||krd}|jItj|z }||jk\rtj|j|z }t |j j ggg|\}}}|rc|d|j j k(rG|tj|j j j|t|z z }t||kr|S#tj$rr|cYSt$r4} tdj|j| jd} ~ wwxYw)z Read from the standard output of the forked program. :param int size: how many chars should be read :return: the string of bytes read, which may be shorter than requested rNrr)timer!rsocketrrr osreadfilenorrrrr ) rsizebufferstartselect_timeoutelapsedrwxr#s rrecvzProxyCommand.recvXs7 FFIIKEf+$!%<<+"iikE1G$,,.$nn..%)\\G%;N $,,"5"5!6BO1a1!4!44bgg ++224dS[6HFf+$M~~   F%chhtxx&8!**E E Fs$DDDE03 E0r:s r_closedzProxyCommand._closeds{{rc||_yr5)r)rrs r settimeoutzProxyCommand.settimeouts  rN) __name__ __module__ __qualname____doc__rr$r3r;propertyr>r@rBrrrr'sJ ("FB233rr)r(rr8rr'r&r r ImportErrorr#paramiko.ssh_exceptionr paramiko.utilrrrHrrrLs](  '1# # 7/_(_  s=AA  A