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smtpd.cpython-38.pyc
U e5d�� � @ s^ d Z ddlZddlZddlZddlZddlZddlZddlZddlZddl Z ddl m Z ddl m Z mZ ddddd gZejd Zd ZG d d � d �Ze� ad ZdZdZd%dd�ZG dd� dej�ZG dd� dej�Z G dd� de �Z G dd� de �Z G dd � d e �Z G dd� d�Z dd� Z!e"d k�rZe!� Z#e#j$Z$d e$k�rpe$�%d �Z&e'e$de&� e(� e)� dg�Z*e$e&d d� Z$nddl+Z*e,e*e$�Z-e-e#j.e#j/fe#j0e#j1fe#j2e#j3d �Z4e#j5�r6z ddl6Z6W n. e7k �r� e8d ej9d!� e�:d � Y nX e6�;d"�d# Z<ze�5e<� W n. e=k �r4 e8d$ej9d!� e�:d � Y nX z e�>� W n e?k �rX Y nX dS )&a� An RFC 5321 smtp proxy with optional RFC 1870 and RFC 6531 extensions. Usage: %(program)s [options] [localhost:localport [remotehost:remoteport]] Options: --nosetuid -n This program generally tries to setuid `nobody', unless this flag is set. The setuid call will fail if this program is not run as root (in which case, use this flag). --version -V Print the version number and exit. --class classname -c classname Use `classname' as the concrete SMTP proxy class. Uses `PureProxy' by default. --size limit -s limit Restrict the total size of the incoming message to "limit" number of bytes via the RFC 1870 SIZE extension. Defaults to 33554432 bytes. --smtputf8 -u Enable the SMTPUTF8 extension and behave as an RFC 6531 smtp proxy. --debug -d Turn on debugging prints. --help -h Print this message and exit. Version: %(__version__)s If localhost is not given then `localhost' is used, and if localport is not given then 8025 is used. If remotehost is not given then `localhost' is used, and if remoteport is not given, then 25 is used. � N)�warn)� get_addr_spec�get_angle_addr� SMTPChannel� SMTPServer�DebuggingServer� PureProxy� MailmanProxyz Python SMTP proxy version 0.3c @ s e Zd Zdd� Zdd� ZdS )�Devnullc C s d S �N� ��self�msgr r � /usr/lib64/python3.8/smtpd.py�writef � z Devnull.writec C s d S r r �r r r r �flushg r z Devnull.flushN)�__name__� __module__� __qualname__r r r r r r r e s r � z, i � c C s4 t tt� tjd� |r&t |tjd� t�| � d S )N��file)�print�__doc__�globals�sys�stderr�exit)�coder r r r �usagep s r# c @ s� e Zd ZdZdZdZe�efdd��Ze dd� �Z e dd d fd d �Z d d � Z dd� Ze dd� �Zejdd� �Ze dd� �Zejdd� �Ze dd� �Zejdd� �Ze dd� �Zejdd� �Ze d d � �Zejd d � �Ze d d � �Zejd!d � �Ze d"d#� �Zejd$d#� �Ze d%d&� �Zejd'd&� �Ze d(d)� �Zejd*d)� �Ze d+d,� �Zejd-d,� �Ze d.d/� �Zejd0d/� �Zd1d2� Zd3d4� Z d5d6� Z d7d8� Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"dAdB� Z#dCdD� Z$dEdF� Z%dGdH� Z&dIdJ� Z'dKdL� Z(dMdN� Z)dOdP� Z*dQdR� Z+dS )Sr r � i c C s | S r r )�xr r r �<lambda>| r zSMTPChannel.<lambda>c C s0 zt | j�� �W S tk r* | j Y S X d S r )�max�command_size_limits�values� ValueError�command_size_limitr r r r �max_command_size_limit~ s z"SMTPChannel.max_command_size_limitNFc C s& t jj| ||d� || _|| _|| _|| _|| _|| _|rF|rFt d��|rdd| _ d| _ d| _ t | _n d| _ d| _ td�| _ d | _| �� d| _d | _| j�� t�� | _z|�� | _W nB tk r� } z$| �� |j d t j kr� W Y �d S d }~X Y nX t d t | j�t!d � | �"d| jt#f � d S )N��map�Fdecode_data and enable_SMTPUTF8 cannot be set to True at the same timer � �.r � � .� Fr zPeer:r z 220 %s %s)$�asynchat� async_chat�__init__� smtp_server�conn�addr�data_size_limit�enable_SMTPUTF8� _decode_datar* � _emptystring�_linesep�_dotsep�NEWLINE�_newline�ord�_set_rset_state� seen_greeting� 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 s �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 r r r rQ 7 s �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 C s | j �| j�}tdt|�td� g | _| j| jk�r| jd }| _|sT| � d� d S | j sdt |d�}|� d�}|dk r�|� � }d }n$|d |� � � }||d d � �� }| jr�| j| n| j}||kr�| � d� d S t| d | d �}|s�| � d | � d S ||� d S | j| jk�r(| � d � d| _d S | j�rR| j| jk�rR| � d � d| _d S g }|�| j�D ]:} | �r�| d | jk�r�|�| dd � � n |�| � �qb| j�|�| _| j| j | j | jf} i } | j �s�| j | j d �} | j j!| | �} | �"� | �s| � d� n | � | � 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\ ) r �lineZsz�i�command�argZmax_sz�methodr� �textrM �kwargsZstatusr r r �found_terminatorL sl � � � 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 kr�| �d � q�|d kr�| �d � q�|dkr�| �d� q�|dkr�| �d� q�|dkr�| �d� q�| �d� n | �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 |�� � � | _ | � | j �}|d kr�| �|� d S | j s�|� dd �}|d kr�| �d � d S | j�r8|� d d �}|dk�r d| _n|d k �r8| �d� d S |� dd �}|�r�|�� �sb| �|� d S | j�r�t|�| jk�r�| �d� d S t|�� �dk�r�| �d� d S || _td| jtd� | �d� d S )N�503 Error: send HELO firstz ===> MAILr z 501 Syntax: MAIL FROM: <address>r� zFROM:z 503 Error: nested MAIL commandZBODY�7BIT)r� Z8BITMIMEz1501 Error: BODY can only be one of 7BIT, 8BITMIMEZSMTPUTF8FTz&501 Error: SMTPUTF8 takes no argumentsZSIZEz:552 Error: message size exceeds fixed maximum message sizer z:555 MAIL FROM parameters not recognized or not implementedzsender:r� )rE rQ r rP rF r� r� rW r� r� r� r� r= �popr< rY �isdigitr; �intr} �keys)r r� � syntaxerrr� r� Zbody�smtputf8�sizer r r � smtp_MAIL sh 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 |�� � � | _ | � | j �}|d kr�| �|� d S t |� � �dkr�| �d � d S | j�|� td | 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� � ' > # 6#c @ s2 e Zd ZeZedddfdd�Zdd� Zdd� ZdS ) r NFc C s� || _ || _|| _|| _|| _|r.|r.td��tjj| |d� zNt j |dt j i�}| � |d d |d d � | � � | �|� | �d� W n | �� � Y n(X td| jjt�t�� �||f td� d S ) Nr/ r- �typer r$ � z0%s started at %s Local addr: %s Remote addr:%sr )Z _localaddr� _remoteaddrr; r< r= r* �asyncore� dispatcherr7 rH Z getaddrinfoZ SOCK_STREAMZ create_socketZset_reuse_addrZbindZlistenrL r � __class__r �time�ctimerP )r Z localaddrZ remoteaddrr; r. r< rS Z gai_resultsr r r r7 x s6 � ��zSMTPServer.__init__c C s6 t dt|� td� | �| ||| j| j| j| j�}d S )NzIncoming connection from %sr )r rO rP � 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. peer is a tuple containing (ipaddr, port) of the client that made the socket connection to our smtp port. mailfrom is the raw address the client claims the message is coming from. rcpttos is a list of raw addresses the client wishes to deliver the 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. This function should return None for a normal `250 Ok' response; otherwise, it should return the desired response string in RFC 821 format. 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