3
\ @ s d Z ddlmZ ddlZddlZdddgZdZdZdZdZd d Z d
d Z
d d
Z dd Z dd Z
dd Zdd ZeefddZeefddZdS )zPseudo terminal utilities. )selectNopenptyforkspawn c C s< yt j S ttfk
r Y nX t \} }t|}| |fS )zdopenpty() -> (master_fd, slave_fd)
Open a pty master/slave pair, using os.openpty() if possible.)osr AttributeErrorOSError_open_terminal
slave_open) master_fd
slave_nameslave_fd r /usr/lib64/python3.6/pty.pyr s
c C sL yt j \} }W n ttfk
r( Y n X t j|}t j| | |fS t S )zmaster_open() -> (master_fd, slave_name)
Open a pty master and return the fd, and the filename of the slave end.
Deprecated, use openpty() instead.)r r r r
ttynamecloser )r
r r r r r master_open! s
r c
C sl x^dD ]V} xPdD ]H}d| | }yt j|t j}W n tk
rH wY nX |d| | fS W qW tddS )z1Open pty master and return (master_fd, tty_name).ZpqrstuvwxyzPQRSTZ0123456789abcdefz/dev/ptyz/dev/ttyzout of pty devicesN)r openO_RDWRr
)xyZpty_namefdr r r r 1 s
r c C sn t j| t j}yddlm}m} W n tk
r6 |S X y |||d |||d W n tk
rh Y nX |S )zslave_open(tty_name) -> slave_fd
Open the pty slave and acquire the controlling terminal, returning
opened filedescriptor.
Deprecated, use openpty() instead.r )ioctlI_PUSHZptemZldterm)r r r Zfcntlr r ImportErrorr
)Ztty_nameresultr r r r r r = s r c C s yt j \} }W n ttfk
r( Y n4X | tkrTy t j W n tk
rR Y nX | |fS t \}}t j } | tkrt j t j| t j |t
t j |t t j |t |t krt j| t j
t jt t j}t j| n
t j| | |fS )zdfork() -> (pid, master_fd)
Fork and make the child a session leader with a controlling terminal.)r forkptyr r
CHILDsetsidr r r dup2 STDIN_FILENO
STDOUT_FILENO
STDERR_FILENOr r r )pidr r
r Ztmp_fdr r r r O s0
c C s& x |r t j| |}||d }qW dS )z#Write all the data to a descriptor.N)r write)r datanr r r _writenw s r) c C s t j| dS )zDefault read function.i )r read)r r r r _read} s r+ c C sz | t g}xlt|g g \}}}| |krH|| }|s<|j| n tjt| t |kr
|t }|sh|jt q
t| | q
W dS )zParent copy loop.
Copies
pty master -> standard output (master_read)
standard input -> pty master (stdin_read)N)r" r remover r& r# r) )r
master_read
stdin_readZfdsZrfdsZwfdsZxfdsr' r r r _copy s r/ c C s t | t dkr| f} t \}}|tkr<tj| d f| y tjt}tjt d}W n tj k
rr d}Y nX yt
||| W n( t k
r |rtj ttj
| Y nX tj| tj|dd S )zCreate a spawned process. r r )typer r r execlpttyZ tcgetattrr" Zsetrawerrorr/ r
Z tcsetattrZ TCSAFLUSHr waitpid)argvr- r. r% r
modeZrestorer r r r s$
)__doc__r r r3 __all__r" r# r$ r r r r r r r) r+ r/ r r r r r <module> s"
(
All system for education purposes only. For more tools: Telegram @jackleet