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�rX Y nX dS )&a� An RFC 5321 smtp proxy with optional RFC 1870 and RFC 6531 extensions.
Usage: %(program)s [options] [localhost:localport [remotehost:remoteport]]
Options:
--nosetuid
-n
This program generally tries to setuid `nobody', unless this flag is
set. The setuid call will fail if this program is not run as root (in
which case, use this flag).
--version
-V
Print the version number and exit.
--class classname
-c classname
Use `classname' as the concrete SMTP proxy class. Uses `PureProxy' by
default.
--size limit
-s limit
Restrict the total size of the incoming message to "limit" number of
bytes via the RFC 1870 SIZE extension. Defaults to 33554432 bytes.
--smtputf8
-u
Enable the SMTPUTF8 extension and behave as an RFC 6531 smtp proxy.
--debug
-d
Turn on debugging prints.
--help
-h
Print this message and exit.
Version: %(__version__)s
If localhost is not given then `localhost' is used, and if localport is not
given then 8025 is used. If remotehost is not given then `localhost' is used,
and if remoteport is not given, then 25 is used.
� N)�warn)�
get_addr_spec�get_angle_addr� SMTPChannel�
SMTPServer�DebuggingServer� PureProxy� MailmanProxyz Python SMTP proxy version 0.3c @ s e Zd Zdd� Zdd� ZdS )�Devnullc C s d S �N� ��self�msgr r � /usr/lib64/python3.8/smtpd.py�writef � z
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z, i � c C s4 t tt� tjd� |r&t |tjd� t�| � d S )N��file)�print�__doc__�globals�sys�stderr�exit)�coder r r r �usagep s r# c @ s� e Zd ZdZdZdZe�efdd��Ze dd� �Z
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async_chat�__init__� smtp_server�conn�addr�data_size_limit�enable_SMTPUTF8� _decode_datar* � _emptystring�_linesep�_dotsep�NEWLINE�_newline�ord�_set_rset_state�
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extended_smtpr( �clear�socketZgetfqdn�fqdnZ getpeername�peer�OSError�close�args�errnoZENOTCONNr �repr� DEBUGSTREAM�push� __version__) r Zserverr9 r: r; r. r< � decode_data�errr r r r7 � s@
zSMTPChannel.__init__c C s. | j | _d| _g | _d| _d| _| �d� dS )z/Reset state variables to their post-DATA state.NFr r2 )�COMMAND�
smtp_state�mailfrom�rcpttos�require_SMTPUTF8� num_bytes�set_terminatorr r r r �_set_post_data_state� s z SMTPChannel._set_post_data_statec C s | � � d| _g | _dS )z.Reset all state variables except the greeting.r N)r\ �
received_data�received_linesr r r r rD � s zSMTPChannel._set_rset_statec C s t dtd� | jS )NzTAccess to __server attribute on SMTPChannel is deprecated, use 'smtp_server' instead� �r �DeprecationWarningr8 r r r r �__server� s
�zSMTPChannel.__serverc C s t dtd� || _d S )NzRSetting __server attribute on SMTPChannel is deprecated, set 'smtp_server' insteadr_ r` �r �valuer r r rb � s
�c C s t dtd� | jS )NzUAccess to __line attribute on SMTPChannel is deprecated, use 'received_lines' insteadr_ �r ra r^ r r r r �__line� s
�zSMTPChannel.__linec C s t dtd� || _d S )NzSSetting __line attribute on SMTPChannel is deprecated, set 'received_lines' insteadr_ re rc r r r rf � s
�c C s t dtd� | jS )NzRAccess to __state attribute on SMTPChannel is deprecated, use 'smtp_state' insteadr_ �r ra rV r r r r �__state� s
�zSMTPChannel.__statec C s t dtd� || _d S )NzPSetting __state attribute on SMTPChannel is deprecated, set 'smtp_state' insteadr_ rg rc r r r rh � s
�c C s t dtd� | jS )NzXAccess to __greeting attribute on SMTPChannel is deprecated, use 'seen_greeting' insteadr_ �r ra rE r r r r �
__greeting� s
�zSMTPChannel.__greetingc C s t dtd� || _d S )NzVSetting __greeting attribute on SMTPChannel is deprecated, set 'seen_greeting' insteadr_ ri rc r r r rj � s
�c C s t dtd� | jS )NzSAccess to __mailfrom attribute on SMTPChannel is deprecated, use 'mailfrom' insteadr_ �r ra rW r r r r �
__mailfrom� s
�zSMTPChannel.__mailfromc C s t dtd� || _d S )NzQSetting __mailfrom attribute on SMTPChannel is deprecated, set 'mailfrom' insteadr_ rk rc r r r rl � s
�c C s t dtd� | jS )NzQAccess to __rcpttos attribute on SMTPChannel is deprecated, use 'rcpttos' insteadr_ �r ra rX r r r r � __rcpttos� s
�zSMTPChannel.__rcpttosc C s t dtd� || _d S )NzOSetting __rcpttos attribute on SMTPChannel is deprecated, set 'rcpttos' insteadr_ rm rc r r r rn � s
�c C s t dtd� | jS )NzTAccess to __data attribute on SMTPChannel is deprecated, use 'received_data' insteadr_ �r ra r] r r r r �__data� s
�zSMTPChannel.__datac C s t dtd� || _d S )NzRSetting __data attribute on SMTPChannel is deprecated, set 'received_data' insteadr_ ro rc r r r rp s
�c C s t dtd� | jS )NzKAccess to __fqdn attribute on SMTPChannel is deprecated, use 'fqdn' insteadr_ �r ra rI r r r r �__fqdn
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�zSMTPChannel.__fqdnc C s t dtd� || _d S )NzISetting __fqdn attribute on SMTPChannel is deprecated, set 'fqdn' insteadr_ rq rc r r r rr s
�c C s t dtd� | jS )NzKAccess to __peer attribute on SMTPChannel is deprecated, use 'peer' insteadr_ �r ra rJ r r r r �__peer s
�zSMTPChannel.__peerc C s t dtd� || _d S )NzISetting __peer attribute on SMTPChannel is deprecated, set 'peer' insteadr_ rs rc r r r rt s
�c C s t dtd� | jS )NzKAccess to __conn attribute on SMTPChannel is deprecated, use 'conn' insteadr_ �r ra r9 r r r r �__conn s
�zSMTPChannel.__connc C s t dtd� || _d S )NzISetting __conn attribute on SMTPChannel is deprecated, set 'conn' insteadr_ ru rc r r r rv % s
�c C s t dtd� | jS )NzKAccess to __addr attribute on SMTPChannel is deprecated, use 'addr' insteadr_ �r ra r: r r r r �__addr+ s
�zSMTPChannel.__addrc C s t dtd� || _d S )NzISetting __addr attribute on SMTPChannel is deprecated, set 'addr' insteadr_ rw rc r r r rx 0 s
�c C s& t j�| t|d | jrdnd�� d S )Nr0 �utf-8�ascii)r5 r6 rQ �bytesrY r
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�zSMTPChannel.pushc C s| d }| j | jkr| j}n| j | jkr*| j}|r<| j|kr<d S |rR| jt|�7 _| jrl| j� t
|d�� n | j� |� d S )Nry ) rV rU r, �DATAr; rZ �lenr= r^ �append�str)r �data�limitr r r �collect_incoming_data< s z!SMTPChannel.collect_incoming_datac
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| � | � d S )NzData:r r z500 Error: bad syntaxry � r$ z500 Error: line too longZsmtp_z&500 Error: command "%s" not recognizedz451 Internal confusionz 552 Error: Too much mail data)� mail_options� rcpt_options�250 OK)#r> �joinr^ r rO rP rV rU rZ rQ r= r �find�upper�striprF r( r+ �getattrr| r; �splitr? r@ r~ rB r] rJ rW rX r� r� r8 �process_messager\ )
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� z SMTPChannel.found_terminatorc C sH |s| � d� d S | jr&| � d� d S | �� || _| � d| j � d S )Nz501 Syntax: HELO hostname�503 Duplicate HELO/EHLOz250 %s)rQ rE rD rI �r r� r r r � smtp_HELO� s
zSMTPChannel.smtp_HELOc C s� |s| � d� d S | jr&| � d� d S | �� || _d| _| � d| j � | jrr| � d| j � | jd d7 < | js�| � d� | jr�| � d � | jd d
7 < | � d � d S ) Nz501 Syntax: EHLO hostnamer� Tz250-%sz 250-SIZE %s�MAIL� z 250-8BITMIMEz 250-SMTPUTF8�
z250 HELP) rQ rE rD rF rI r; r( r= r< r� r r r � smtp_EHLO� s&
zSMTPChannel.smtp_EHLOc C s |r| � d� n
| � d� d S )Nz501 Syntax: NOOPr� �rQ r� r r r � smtp_NOOP� s zSMTPChannel.smtp_NOOPc C s | � d� | �� d S )Nz221 Bye)rQ Zclose_when_doner� r r r � smtp_QUIT� s
zSMTPChannel.smtp_QUITc C s0 t |�}|d |� �� |kr,||d � �� S dS )Nr )r} r� r� )r �keywordr� Zkeylenr r r �_strip_command_keyword� s z"SMTPChannel._strip_command_keywordc C sF |sdS |� � �d�r$t|�\}}n t|�\}}|s<||fS |j|fS )N)r r �<)�lstrip�
startswithr r Z addr_spec)r r� �address�restr r r �_getaddr� s zSMTPChannel._getaddrc C sH i }|D ]:}|� d�\}}}|�� r,|r2|s2 d S |r:|nd||< q|S )N�=T)� partition�isalnum)r �params�resultZparam�eqrd r r r �
_getparams� s zSMTPChannel._getparamsc C s |r�d}|� � }|dkr$| �d� q�|dkr8| �d� q�|dkr^d}| jrR||7 }| �|� q�|dkr�d }| jrx||7 }| �|� q�|d
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| �d� d S )N� [SP <mail-parameters>]ZEHLOz250 Syntax: EHLO hostnameZHELOz250 Syntax: HELO hostnamer� z 250 Syntax: MAIL FROM: <address>ZRCPTz 250 Syntax: RCPT TO: <address>r| z250 Syntax: DATAZRSETz250 Syntax: RSETZNOOPz250 Syntax: NOOPZQUITz250 Syntax: QUITZVRFYz250 Syntax: VRFY <address>zD501 Supported commands: EHLO HELO MAIL RCPT DATA RSET NOOP QUIT VRFYzD250 Supported commands: EHLO HELO MAIL RCPT DATA RSET NOOP QUIT VRFY)r� rQ rF )r r� ZextendedZlc_argr r r r � smtp_HELP� s: zSMTPChannel.smtp_HELPc C s@ |r2| � |�\}}|r"| �d� q<| �d| � n
| �d� d S )NzB252 Cannot VRFY user, but will accept message and attempt deliveryz502 Could not VRFY %sz501 Syntax: VRFY <address>)r� rQ )r r� r� r� r r r � smtp_VRFY� s zSMTPChannel.smtp_VRFYc C s� | j s| �d� d S td|td� d}| jr4|d7 }|d krJ| �|� d S | �d|�}| �|�\}}|sv| �|� d S | js�|r�| �|� d S | jr�| �d� d S |�� � � | _
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zSMTPChannel.smtp_MAILc C s | j s| �d� d S td|td� | js6| �d� d S d}| jrH|d7 }|d kr^| �|� d S | �d|�}| �|�\}}|s�| �|� d S | js�|r�| �|� d S |�� � � | _
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| jtd� | �d � d S ) Nr� z ===> RCPTr z 503 Error: need MAIL commandz 501 Syntax: RCPT TO: <address>r� zTO:r z8555 RCPT TO parameters not recognized or not implementedzrecips:r� )rE rQ r rP rW rF r� r� r� r� r� r� r} r� rX r~ )r r� r� r� r� r r r � smtp_RCPT7 s@
zSMTPChannel.smtp_RCPTc C s( |r| � d� d S | �� | � d� d S )Nz501 Syntax: RSETr� )rQ rD r� r r r � smtp_RSETZ s
zSMTPChannel.smtp_RSETc C sZ | j s| �d� d S | js(| �d� d S |r:| �d� d S | j| _| �d� | �d� d S )Nr� z 503 Error: need RCPT commandz501 Syntax: DATAs
.
z#354 End data with <CR><LF>.<CR><LF>)rE rQ rX r| rV r[ r� r r r � smtp_DATAa s
zSMTPChannel.smtp_DATAc C s | � d� d S )Nz502 EXPN not implementedr� r� r r r � smtp_EXPNp s zSMTPChannel.smtp_EXPN),r r r rU r| r+ � collections� defaultdictr( �propertyr, �DATA_SIZE_DEFAULTr7 r\ rD Z_SMTPChannel__server�setterZ_SMTPChannel__lineZ_SMTPChannel__stateZ_SMTPChannel__greetingZ_SMTPChannel__mailfromZ_SMTPChannel__rcpttosZ_SMTPChannel__dataZ_SMTPChannel__fqdnZ_SMTPChannel__peerZ_SMTPChannel__connZ_SMTPChannel__addrrQ r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r r r r w s�
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channel_classr; �_mapr< r= )r r9 r: Zchannelr r r �handle_accepted� s �zSMTPServer.handle_acceptedc K s t �dS )a Override this abstract method to handle messages from the client.
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message to.
data is a string containing the entire full text of the message,
headers (if supplied) and all. It has been `de-transparencied'
according to RFC 821, Section 4.5.2. In other words, a line
containing a `.' followed by other text has had the leading dot
removed.
kwargs is a dictionary containing additional information. It is
empty if decode_data=True was given as init parameter, otherwise
it will contain the following keys:
'mail_options': list of parameters to the mail command. All
elements are uppercase strings. Example:
['BODY=8BITMIME', 'SMTPUTF8'].
'rcpt_options': same, for the rcpt command.
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