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o �b&0 � @ s� d Z ddlmZ ddlmZ ddlmZmZ ddlm Z ddl m Z m Z ddl mZmZmZ ddlmZ eej�G d d � d ��ZG d d � d e�ZG d d� de�ZG dd� dej�ZG dd� de�ZG dd� dej�ZG dd� de j�Z dS )z Mail protocol support. � )� implementer)� longversion)�CramMD5Credentials�UsernamePassword)�UnauthorizedLogin)�defer�protocol)�pop3�relay�smtp)�logc @ sH e Zd ZU dZdZdZeed< ej fdd�Z dd� Z d d � Z d d � Z dS ) �DomainDeliveryBaseaN A base class for message delivery using the domains of a mail service. @ivar service: See L{__init__} @ivar user: See L{__init__} @ivar host: See L{__init__} @type protocolName: L{bytes} @ivar protocolName: The protocol being used to deliver the mail. Sub-classes should set this appropriately. Ns not-implemented-protocol� protocolNamec C s || _ || _|| _dS )z� @type service: L{MailService} @param service: A mail service. @type user: L{bytes} or L{None} @param user: The authenticated SMTP user. @type host: L{bytes} @param host: The hostname. N)�service�user�host)�selfr r r � r �8/usr/lib/python3/dist-packages/twisted/mail/protocols.py�__init__% s zDomainDeliveryBase.__init__c C s� d }}| j rd| j �d� }|d rd|d }d|d d |d d | | }d | j d | j d t�d � d }dd�tt|�� d t� � }d| d | d | S )a� Generate a received header string for a message. @type helo: 2-L{tuple} of (L{bytes}, L{bytes}) @param helo: The client's identity as sent in the HELO command and its IP address. @type origin: L{Address} @param origin: The origination address of the message. @type recipients: L{list} of L{User} @param recipients: The destination addresses for the message. @rtype: L{bytes} @return: A received header string. � s auth=�xtextr s helo=s from s ([� � ]s by s with s (�ascii� )s for <� s > s Received: s ) r �encoder r r �join�map�bytesr � rfc822date) r �helo�origin� recipients�authStr�heloStr�fromUser�by�forUserr r r �receivedHeader4 s. $������� �z!DomainDeliveryBase.receivedHeaderc C sX | j r | jjr | jj�|jjd�}|du r t�| jd�}n| jj|jj }t � |j |�S )a9 Validate the address for which a message is destined. @type user: L{User} @param user: The destination address. @rtype: L{Deferred <defer.Deferred>} which successfully fires with no-argument callable which returns L{IMessage <smtp.IMessage>} provider. @return: A deferred which successfully fires with a no-argument callable which returns a message receiver for the destination. @raise SMTPBadRcpt: When messages cannot be accepted for the destination address. NT) r r �queue�domains�get�dest�domainr � DomainQueuerr � maybeDeferred�exists)r r �dr r r � validateToY s �z DomainDeliveryBase.validateToc C s8 |s t �|dd��|jdkr|jdkrt �|dd��|S )a� Validate the address from which a message originates. @type helo: 2-L{tuple} of (L{bytes}, L{bytes}) @param helo: The client's identity as sent in the HELO command and its IP address. @type origin: L{Address} @param origin: The origination address of the message. @rtype: L{Address} @return: The origination address. @raise SMTPBadSender: When messages cannot be accepted from the origination address. i� z Who are you? Say HELO first.r i� z#Sender address must contain domain.)r � SMTPBadSender�localr/ )r r" r# r r r � validateFromr s z DomainDeliveryBase.validateFrom)�__name__� __module__� __qualname__�__doc__r r r �__annotations__r �DNSNAMEr r* r4 r7 r r r r r s % r c @ � e Zd ZdZdZdS )�SMTPDomainDeliveryzA A domain delivery base class for use in an SMTP server. s smtpN�r8 r9 r: r; r r r r r r? � � r? c @ r> )�ESMTPDomainDeliveryzB A domain delivery base class for use in an ESMTP server. s esmtpNr@ r r r r rB � rA rB c @ s, e Zd ZdZejZdZddd�Zdd� Z dS )� SMTPFactorya; An SMTP server protocol factory. @ivar service: See L{__init__} @ivar portal: See L{__init__} @type protocol: no-argument callable which returns a L{Protocol <protocol.Protocol>} subclass @ivar protocol: A callable which creates a protocol. The default value is L{SMTP}. Nc C s t j�| � || _|| _dS )z� @type service: L{MailService} @param service: An email service. @type portal: L{Portal <twisted.cred.portal.Portal>} or L{None} @param portal: A portal to use for authentication. N)r rC r r �portal)r r rD r r r r � s zSMTPFactory.__init__c C s2 t �d|� �� tj�| |�}| j|_| j|_|S )a Create an instance of an SMTP server protocol. @type addr: L{IAddress <twisted.internet.interfaces.IAddress>} provider @param addr: The address of the SMTP client. @rtype: L{SMTP} @return: An SMTP protocol. zConnection from )r �msgr rC � buildProtocolr rD �r �addr�pr r r rF � s zSMTPFactory.buildProtocol)N) r8 r9 r: r; r �SMTPr rD r rF r r r r rC � s rC c @ s* e Zd ZdZejZdZdd� Zdd� Z dS )� ESMTPFactorya An ESMTP server protocol factory. @type protocol: no-argument callable which returns a L{Protocol <protocol.Protocol>} subclass @ivar protocol: A callable which creates a protocol. The default value is L{ESMTP}. @type context: L{IOpenSSLContextFactory <twisted.internet.interfaces.IOpenSSLContextFactory>} or L{None} @ivar context: A factory to generate contexts to be used in negotiating encrypted communication. @type challengers: L{dict} mapping L{bytes} to no-argument callable which returns L{ICredentials <twisted.cred.credentials.ICredentials>} subclass provider. @ivar challengers: A mapping of acceptable authorization mechanism to callable which creates credentials to use for authentication. Nc G s t j| g|�R � dti| _dS )zk @param args: Arguments for L{SMTPFactory.__init__} @see: L{SMTPFactory.__init__} s CRAM-MD5N)rC r r � challengers)r �argsr r r r � s zESMTPFactory.__init__c C s t �| |�}| j|_| j|_|S )a Create an instance of an ESMTP server protocol. @type addr: L{IAddress <twisted.internet.interfaces.IAddress>} provider @param addr: The address of the ESMTP client. @rtype: L{ESMTP} @return: An ESMTP protocol. )rC rF rL �context�ctxrG r r r rF � s zESMTPFactory.buildProtocol) r8 r9 r: r; r �ESMTPr rN r rF r r r r rK � s rK c @ s0 e Zd ZdZdZdZdd� Zdd� Zdd � ZdS ) � VirtualPOP3a[ A virtual hosting POP3 server. @type service: L{MailService} @ivar service: The email service that created this server. This must be set by the service. @type domainSpecifier: L{bytes} @ivar domainSpecifier: The character to use to split an email address into local-part and domain. The default is '@'. N� @c C sZ | � |�\}}z| j�|�}W n ty t�t� � Y S w |�t� | j ||�dtj �S )a1 Perform APOP authentication. Override the default lookup scheme to allow virtual domains. @type user: L{bytes} @param user: The name of the user attempting to log in. @type digest: L{bytes} @param digest: The challenge response. @rtype: L{Deferred} which successfully results in 3-L{tuple} of (L{IMailbox <pop3.IMailbox>}, L{IMailbox <pop3.IMailbox>} provider, no-argument callable) @return: A deferred which fires when authentication is complete. If successful, it returns an L{IMailbox <pop3.IMailbox>} interface, a mailbox and a logout function. If authentication fails, the deferred fails with an L{UnauthorizedLogin <twisted.cred.error.UnauthorizedLogin>} error. N) � lookupDomainr � lookupPortal�KeyErrorr �failr �loginr �APOPCredentials�magic�IMailbox)r r �digestr/ rD r r r �authenticateUserAPOP s ��z VirtualPOP3.authenticateUserAPOPc C sT | � |�\}}z| j�|�}W n ty t�t� � Y S w |�t||�dt j �S )aY Perform authentication for a username/password login. Override the default lookup scheme to allow virtual domains. @type user: L{bytes} @param user: The name of the user attempting to log in. @type password: L{bytes} @param password: The password to authenticate with. @rtype: L{Deferred} which successfully results in 3-L{tuple} of (L{IMailbox <pop3.IMailbox>}, L{IMailbox <pop3.IMailbox>} provider, no-argument callable) @return: A deferred which fires when authentication is complete. If successful, it returns an L{IMailbox <pop3.IMailbox>} interface, a mailbox and a logout function. If authentication fails, the deferred fails with an L{UnauthorizedLogin <twisted.cred.error.UnauthorizedLogin>} error. N) rS r rT rU r rV r rW r r rZ )r r �passwordr/ rD r r r �authenticateUserPASS+ s �z VirtualPOP3.authenticateUserPASSc C sX z |� | jd�\}}W n ty d}Y nw || jjvr(t�d�|�d����||fS )a� Check whether a domain is among the virtual domains supported by the mail service. @type user: L{bytes} @param user: An email address. @rtype: 2-L{tuple} of (L{bytes}, L{bytes}) @return: The local part and the domain part of the email address if the domain is supported. @raise POP3Error: When the domain is not supported by the mail service. r r zno such domain {}zutf-8) �split�domainSpecifier� ValueErrorr r, r � POP3Error�format�decode)r r r/ r r r rS H s � zVirtualPOP3.lookupDomain) r8 r9 r: r; r r` r\ r^ rS r r r r rQ � s rQ c @ s( e Zd ZdZeZdZdd� Zdd� ZdS )� POP3Factorya A POP3 server protocol factory. @ivar service: See L{__init__} @type protocol: no-argument callable which returns a L{Protocol <protocol.Protocol>} subclass @ivar protocol: A callable which creates a protocol. The default value is L{VirtualPOP3}. Nc C s || _ dS )zY @type service: L{MailService} @param service: An email service. N)r )r r r r r r n s zPOP3Factory.__init__c C s t j�| |�}| j|_|S )a Create an instance of a POP3 server protocol. @type addr: L{IAddress <twisted.internet.interfaces.IAddress>} provider @param addr: The address of the POP3 client. @rtype: L{POP3} @return: A POP3 protocol. )r � ServerFactoryrF r rG r r r rF u s zPOP3Factory.buildProtocol) r8 r9 r: r; rQ r r r rF r r r r re _ s re N) r; �zope.interfacer �twisted.copyrightr �twisted.cred.credentialsr r �twisted.cred.errorr �twisted.internetr r � twisted.mailr r r �twisted.pythonr �IMessageDeliveryr r? rB rC rK �POP3rQ rf re r r r r �<module> s u.1f
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