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� TelnetOptionz@Manage a single telnet option, keeps track of DO/DONT WILL/WONT.Nc
C s@ || _ || _|| _|| _|| _|| _|| _|| _d| _| | _ dS )a; Initialize option.
:param connection: connection used to transmit answers
:param name: a readable name for debug outputs
:param send_yes: what to send when option is to be enabled.
:param send_no: what to send when option is to be disabled.
:param ack_yes: what to expect when remote agrees on option.
:param ack_no: what to expect when remote disagrees on option.
:param initial_state: options initialized with REQUESTED are tried to
be enabled on startup. use INACTIVE for all others.
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connection�name�option�send_yes�send_no�ack_yes�ack_no�state�active�activation_callback)
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zTelnetOption.__init__c C � dj | d�S )zString for debug outputsz {o.name}:{o.active}({o.state}))�o��format�ra rJ rJ rO �__repr__ � zTelnetOption.__repr__c C s6 || j kr\| jtu r t| _d| _| jdur| �� dS dS | jtu r$dS | jtu rEt| _| j�| j | j
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d�| ���dS )zo A DO/DONT/WILL/WONT was received for this option, update state and
answer when needed.
TNz option in illegal state {!r}F)r\ r^ rR rS r_ r` rT rW �telnet_send_optionrZ rY rU r[ �
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�z TelnetOption.process_incomingrI )�__name__�
__module__� __qualname__�__doc__rc ri ro rJ rJ rJ rO rV � s
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dd� Z dS )�TelnetSubnegotiationz� A object to handle subnegotiation of options. In this case actually
sub-sub options for RFC 2217. It is used to track com port options.
Nc C s4 |d u r|}|| _ || _|| _d | _|| _t| _d S rI )rW rX rY �value�
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z TelnetSubnegotiation.__init__c C rd )zString for debug outputs.z{sn.name}:{sn.state})�snrf rh rJ rJ rO ri C rj z TelnetSubnegotiation.__repr__c C sH || _ t| _| j�| j| j � | jjr"| jj�d�| j | j �� dS dS )z� Request a change of the value. a request is sent to the server. if
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zSB Requesting {} -> {!r}N)
ru rR r^ rW �rfc2217_send_subnegotiationrY �loggerr rg rX )ra ru rJ rJ rO �setG s �zTelnetSubnegotiation.setc C s$ | j tkr
td�| j���| j tkS )z{ Check if answer from server has been received. when server rejects
the change, raise a ValueError.
z%remote rejected value for option {!r})r^ rU rl rg rX rS rh rJ rJ rO �is_readyS s
z TelnetSubnegotiation.is_readyrF c C s> t |�}|�� st�d� | �� rdS |�� rtd�| j���)z� Wait until the subnegotiation has been acknowledged or timeout. It
can also throw a value error when the answer from the server does not
match the value sent.
皙�����?z%timeout while waiting for option {!r}N)r �expired�time�sleepr{ r rg rX )ra �timeout�
timeout_timerrJ rJ rO �wait^ s
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cut off the header like sub option number and com port option value.
NzSB Answer {} -> {!r} -> {})
ru �lenrS r^ rU rW ry r rg rX )ra � suboptionrJ rJ rO � check_answerl s �z!TelnetSubnegotiation.check_answerrI )rF ) rp rq rr rs rc ri rz r{ �propertyr_ r� r� rJ rJ rJ rO rt 3 s
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_linestate� _modemstater �_modemstate_timeout�_remote_suspend_flow� _write_lockry �_ignore_set_control_answer�_poll_modem_state�_network_timeout�_telnet_options�_rfc2217_port_settings�_rfc2217_options� _read_buffer�superr� rc )ra �args�kwargs�� __class__rJ rO rc � s
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t ttttt �t| dt ttttt �t| dtttttt �t| dt ttttt �g| | _!t"| dt#t$�t"| dt%t&�t"| dt't(�t"| dt)t*�d�| _+t"| dt,t-�t"| dt.t/�d�| _0| j0�1| j+� d| _2d| _3t4d�| _5d| _6d| _tj7| j8d �| _9| j9�:d� | j9�;d �| j�� | j9�<� zq| j!D ]}|j=t u �r| �>|j?|j@� �q t4| j�}|�A� �sCtB�Cd � tDd d � |D ��tDd!d � |D ��k�r>n |�A� �r%td"�|���| j �rX| j �Ed#�| j!�� | �F� | jG�sd| �H� | jI�sl| �J� | �K� | �L� W dS | �M� � )$zx Open port with current settings. This may throw a SerialException
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NFrF z.Port must be configured before it can be used.zPort is already open.rG )r� rE zCould not open port {}: {}� we-BINARY�
we-RFC2217�ECHO�we-SGA�they-SGA� they-BINARY� they-RFC2217�baudrate�datasize�parity�stopsize)r� r� r� r� �purge�control)r� r� r r� T)�targetz&pySerial RFC 2217 reader thread for {}r| c s � � | ]}|j V qd S rI �r_ �rL re rJ rJ rO rP � � � z Serial.open.<locals>.<genexpr>c s s � | ]}|j tkV qd S rI )r^ rT r� rJ rJ rO rP � s � z;Remote does not seem to support RFC2217 or BINARY mode {!r}zNegotiated options: {})Nry r� r� r� �_portr �is_open�socket�create_connection�from_url�portstrr� �
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r� �_xonxoff�rfc2217_set_control� SET_CONTROL_USE_HW_FLOW_CONTROL� SET_CONTROL_USE_SW_FLOW_CONTROL� SET_CONTROL_USE_NO_FLOW_CONTROL)ra �itemsr� rJ rJ rO r� � s:
� zSerial._reconfigure_portc C s^ d| _ | jrz| j�tj� | j�� W n Y | jr*| j�d� d| _t� d� d| _dS )z
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r� r� �shutdownr� � SHUT_RDWRr� r� �joinr~ r rh rJ rJ rO r� s
z Serial.closec
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��W n ty� } ztd�|���d}~ww |j|jfS )zu extract host and port from an URL string, other settings are extracted
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�rfc2217zqexpected a string in the form "rfc2217://<host>:<port>[?option[&option...]]": not starting with rfc2217:// ({!r})T�loggingzpySerial.rfc2217r zenabled logging�ign_set_control�
poll_modemr� zunknown option: {!r}i zport not in range 0...65535zPexpected a string in the form "rfc2217://<host>:<port>[?option[&option...]]": {}N)�urlparse�urlsplit�schemer rg �parse_qs�queryr� r � basicConfig� getLoggerry �setLevel�
LOGGER_LEVELSr r� r� �floatr� rl �port�hostname)ra �url�partsrY r� �erJ rJ rO r� 0 sB
� ����� zSerial.from_urlc C s | j st� �| j�� S )z9Return the number of bytes currently in the input buffer.)r� r r� �qsizerh rJ rJ rO �
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� r>nt|�|k sW t |�S W t |�S W t |�S tjy_ Y t |�S w )z� Read size bytes from the serial port. If a timeout is set it may
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until the requested number of bytes is read.
Nz&connection failed (reader thread died)T)r� r � bytearrayr �_timeoutr� r� �is_aliver r� �get� time_left�bytesr} r� �Empty)ra �size�datar� �bufrJ rJ rO �read\ s0
� � ���z Serial.readc C s� | j st� �| j�. z| j�t|��tt�� W n t j
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closed.
z$connection failed (socket error): {}N)r� r r� r� �sendallr �replace�IAC� IAC_DOUBLEDr� r r rg r� )ra r r rJ rJ rO �writet s ���
��z Serial.writec C s> | j st� �| �t� | j�� r | j�d� | j�� sdS dS )z9Clear input buffer, discarding all that is in the buffer.FN)r� r �rfc2217_send_purge�PURGE_RECEIVE_BUFFERr� r r rh rJ rJ rO r� � s
�zSerial.reset_input_bufferc C s | j st� �| �t� dS )zs Clear output buffer, aborting the current output and
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N)r� r r$ �PURGE_TRANSMIT_BUFFERrh rJ rJ rO r� � s zSerial.reset_output_bufferc C �P | j st� �| jr| j�d�| jrdnd�� | jr!| �t� dS | �t� dS )z[ Set break: Controls TXD. When active, to transmitting is
possible.
zset BREAK to {}r_ �inactiveN) r� r ry r
rg � _break_stater� �SET_CONTROL_BREAK_ON�SET_CONTROL_BREAK_OFFrh rJ rJ rO �_update_break_state� s zSerial._update_break_statec C r' )z*Set terminal status line: Request To Send.z
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M_IAC_SEEN�SBr �SE� _telnet_process_subnegotiationr r� r� r� r� � M_NEGOTIATE�_telnet_process_command�_telnet_negotiate_option)ra �moder� r r �byte�telnet_commandrJ rJ rO r� � sl ��
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��zSerial._telnet_read_loopc C � | j r| j �d�|�� dS dS �z1Process commands other than DO, DONT, WILL, WONT.z ignoring Telnet command: {!r}N�ry r rg rm rJ rJ rO rH � �z Serial._telnet_process_commandc C �| d}| j D ]}|j|kr|�|� d}q|s8|tks |tkr:| �|tkr&tnt|� | jr<| j� d�
|�� dS dS dS dS �z&Process incoming DO, DONT, WILL, WONT.FTz rejected Telnet option: {!r}N� r� rY ro r� r� rk r� r� ry r rg �ra rn rY �known�itemrJ rJ rO rI $ �
��z Serial._telnet_negotiate_optionc C sj |dd� t kr�|dd� tkr0t|�dkr0t|dd� �| _| jr.| j�d�| j�� d
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rg �SERVER_NOTIFY_MODEMSTATEr� r� �restart�FLOWCONTROL_SUSPENDr� �FLOWCONTROL_RESUMEr� r� rv r� r r )ra r� rV rJ rJ rO rF 7 s4 �
���z%Serial._telnet_process_subnegotiationc C s8 | j � | j�|� W d � dS 1 sw Y dS )zGinternal socket write with no data escaping. used to send telnet stuff.N)r� r� r )ra r rJ rJ rO �_internal_raw_writeW s "�zSerial._internal_raw_writec C s | � t| | � dS �zSend DO, DONT, WILL, WONT.N)r` r! �ra �actionrY rJ rJ rO rk \ s zSerial.telnet_send_option� c C s2 |� tt�}| �tt t | | t t � dS )z%Subnegotiation of RFC2217 parameters.N)r r! r" r` rD r� rE �ra rY ru rJ rJ rO rx ` s &z"Serial.rfc2217_send_subnegotiationc C s$ | j d }|�|� |�| j� dS )z~ Send purge request to the remote.
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r� N)r� rz r� r� �ra ru rV rJ rJ rO r$ e s
zSerial.rfc2217_send_purgec C s8 | j d }|�|� | jrt�d� dS |�| j� dS )z)transmit change of control line to remoter� g�������?N)r� rz r� r~ r r� r� rf rJ rJ rO r� n s
zSerial.rfc2217_set_controlc C s dS )z` check if server is ready to receive data. block for some time when
not.
NrJ rh rJ rJ rO �rfc2217_flow_server_readyz s z Serial.rfc2217_flow_server_readyc C s� | j r7| j�� r7| jr| j�d� | �t� t| j�}|�� s.t �
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d��)z� get last modem state (cached value. If value is "old", request a new
one. This cache helps that we don't issue to many requests when e.g. all
status lines, one after the other is queried by the user (CTS, DSR
etc.)
zpolling modem stater| zpoll for modem state failedNzusing cached modem statez!remote sends no NOTIFY_MODEMSTATE)r� r� r} ry r rx �NOTIFY_MODEMSTATEr r� r~ r r r� r )ra r� rJ rJ rO r6 � s"
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zSerial.get_modem_state)rE �rd )#rp rq rr rs � BAUDRATESrc r� r� r� r� r� r r r# r� r� r, r� r� r8 r; r= r? r� rH rI rF r` rk rx r$ r� rg r6 �
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dS ) � PortManagerz� This class manages the state of Telnet and RFC 2217. It needs a serial
instance and a connection to work with. Connection is expected to implement
a (thread safe) write function, that writes the string to the network.
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tt| j� g| _| jrt| j�d � | jD ]}|jtu r�| �|j|j � qwd S ) NF� r r� r� r� r� r� r� r� z*requesting initial Telnet/RFC 2217 options) �serialrW ry �_client_is_rfc2217r@ rJ r� rL �modemstate_mask�last_modemstate�
linstate_maskrV r� r� r� r� r� rR r� rT r� r� �
_client_okr� r r^ rk rZ rY )ra � serial_portrW ry rY rJ rJ rO rc � s2 �
��zPortManager.__init__c C s( d| _ | jr | j�d� | jdd� dS )a callback of telnet option. It gets called when option is activated.
This one here is used to detect when the client agrees on RFC 2217. A
flag is set so that other functions like check_modem_lines know if the
client is OK.
Tzclient accepts RFC 2217��force_notificationN)ro ry r
�check_modem_linesrh rJ rJ rO rs � s zPortManager._client_okc C s | j �t| | � dS ra )rW r# r! rb rJ rJ rO rk � s z PortManager.telnet_send_optionrd c C s4 |� tt�}| j�tt t | | t t � dS )z&Subnegotiation of RFC 2217 parameters.N)r r! r" rW r# rD r� rE re rJ rJ rO rx � s (z'PortManager.rfc2217_send_subnegotiationFc C s� | j jot| j jo
tB | j jotB | j jotB }|| j p dA }|t@ r'|t
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O }|| j ksF|ro| jrN|| j@ sP|rh| �tt|| j@ g�� | jrh| j�d�|�� |d@ | _ dS dS )z� read control lines from serial port and compare the last value sent to remote.
send updates on changes.
r rY �� N)rn r8 r7 r; r: r= r< r? r> rq �MODEMSTATE_MASK_CTS_CHANGE�MODEMSTATE_MASK_DSR_CHANGE�MODEMSTATE_MASK_RI_CHANGE�MODEMSTATE_MASK_CD_CHANGEro rp rx r\ r ry r
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����z PortManager.check_modem_linesc c s0 � t |�D ]}|tkrtV tV q|V qdS )z� This generator function is for the user. All outgoing data has to be
properly escaped, so that no IAC character in the data stream messes up
the Telnet state machine in the server.
socket.sendall(escape(data))
N)r r! �ra r rK rJ rJ rO �escape s � �zPortManager.escapec c s � t |�D ]�}| jtkr%|tkrt| _q| jdur!| j|7 _q|V q| jtkry|tkrB| jdur;| j|7 _n|V t| _q|tkrNt� | _t| _q|tkra| � t
| j�� d| _t| _q|t t t
tfv rp|| _t| _q| �|� t| _q| jtkr�| �| j|� t| _qdS )a� Handle a bunch of incoming bytes. This is a generator. It will yield
all characters not of interest for Telnet/RFC 2217.
The idea is that the reader thread pushes data from the socket through
this filter:
for byte in filter(socket.recv(1024)):
# do things like CR/LF conversion/whatever
# and write data to the serial port
serial.write(byte)
(socket error handling code left as exercise for the reader)
N)r rJ r@ r! rC r� rD r rE rF r r� r� r� r� rL rG rH rI r rJ rJ rO �filter( s> �
��zPortManager.filterc C rM rN rO rm rJ rJ rO rH c rP z#PortManager._telnet_process_commandc C rQ rR rS rT rJ rJ rO rI i rW z$PortManager._telnet_negotiate_optionc
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� �| _;| j�r�| j� d&�| j;�� dS dS |dd� t<k�r�t:|dd
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� t?k�r | j�@� | j�r| j� d(� | � tAt?� dS |dd
� tBk�r?| j�C� | j�r7| j� d)� | � tAtB� dS |dd
� tDk�rd| j�@� | j�C� | j�r\| j� d*� | � tAtD� dS | j�ry| j�
d+�tE|dd� ��� dS dS | j�r�| j�
d,�tE|dd� ��� dS dS | j�r�| j�%d-�|�� dS dS ).rX r rE z received COM_PORT_OPTION: {!r}rD r� � zfailed to set baud rate: {}Nz{} baud rate: {}rz r r� rF zfailed to set data size: {}z{} data size: {}zfailed to set parity: {}z
{} parity: {}zfailed to set stop bits: {}z{} stop bits: {}Fz changed flow control to NoneTz changed flow control to XON/XOFFz changed flow control to RTS/CTSz'requested break state - not implementedzchanged BREAK to activezchanged BREAK to inactivez%requested DTR state - not implementedzchanged DTR to activezchanged DTR to inactivez%requested RTS state - not implementedzchanged RTS to activezchanged RTS to inactivezrequest for modem stateru �suspend�resumezline state mask: 0x{:02x}zmodem state mask: 0x{:02x}zpurge inz purge outz
purge bothzundefined PURGE_DATA: {!r}z undefined COM_PORT_OPTION: {!r}z unknown subnegotiation: {!r})Fr� ry r rg r� rn r� r� �unpackrl r r
rx r� r� r� �bytesizer� r� r� �RFC2217_REVERSE_PARITY_MAPr� r� r� �stopbits�RFC2217_REVERSE_STOPBIT_MAPr� r� r� � SET_CONTROL_REQ_FLOW_SETTING�xonxoffr� r� �rtsctsr� r� �SET_CONTROL_REQ_BREAK_STATEr r* �break_conditionr+ �SET_CONTROL_REQ_DTRr2 �dtrr3 �SET_CONTROL_REQ_RTSr. �rtsr/ �NOTIFY_LINESTATErZ r rh rw r^ r� r_ �SET_LINESTATE_MASKr[ rr �SET_MODEMSTATE_MASKrp r� r% r� r� r& r� �PURGE_BOTH_BUFFERS�list)ra r� �backupr� r r� r� r� rJ rJ rO rF | s� ��� ���
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z write...
s hello
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