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# -*- test-case-name: twisted.mail.test.test_mail -*-
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# Copyright (c) 2001-2004 Twisted Matrix Laboratories.
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# See LICENSE for details.
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"""Mail support for twisted python.
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from twisted.internet import defer
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from twisted.application import service, internet
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from twisted.python import util
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from twisted.python import log
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from twisted import cred
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import twisted.cred.portal
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from twisted.mail import protocols, smtp
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from zope.interface import implements, Interface
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class DomainWithDefaultDict:
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'''Simulate a dictionary with a default value for non-existing keys.
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def __init__(self, domains, default):
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self.domains = domains
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self.default = default
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def setDefaultDomain(self, domain):
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def has_key(self, name):
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def fromkeys(klass, keys, value=None):
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fromkeys = classmethod(fromkeys)
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def __contains__(self, name):
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def __getitem__(self, name):
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return self.domains.get(name, self.default)
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def __setitem__(self, name, value):
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self.domains[name] = value
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def __delitem__(self, name):
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del self.domains[name]
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return iter(self.domains)
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return len(self.domains)
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return '<DomainWithDefaultsDict %s>' % (self.domains,)
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return 'DomainWithDefaultsDict(%s)>' % (self.domains,)
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def get(self, key, default=None):
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return self.domains.get(key, default)
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return DomainWithDefaultsDict(self.domains.copy(), self.default)
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return self.domains.iteritems()
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return self.domains.iterkeys()
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return self.domains.itervalues()
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return self.domains.keys()
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return self.domains.values()
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return self.domains.items()
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return self.domains.popitem()
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def update(self, other):
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return self.domains.update(other)
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return self.domains.clear()
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def setdefault(self, key, default):
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return self.domains.setdefault(key, default)
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class IDomain(Interface):
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"""An email domain."""
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Check whether or not the specified user exists in this domain.
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@type user: C{twisted.protocols.smtp.User}
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@param user: The user to check
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@rtype: No-argument callable
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@return: A C{Deferred} which becomes, or a callable which
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takes no arguments and returns an object implementing C{IMessage}.
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This will be called and the returned object used to deliver the
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message when it arrives.
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@raise twisted.protocols.smtp.SMTPBadRcpt: Raised if the given
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user does not exist in this domain.
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def addUser(user, password):
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"""Add a username/password to this domain."""
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def startMessage(user):
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"""Create and return a new message to be delivered to the given user.
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DEPRECATED. Implement validateTo() correctly instead.
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def getCredentialsCheckers():
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"""Return a list of ICredentialsChecker implementors for this domain.
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class IAliasableDomain(IDomain):
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def setAliasGroup(aliases):
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"""Set the group of defined aliases for this domain
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@type aliases: C{dict}
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@param aliases: Mapping of domain names to objects implementing
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def exists(user, memo=None):
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Check whether or not the specified user exists in this domain.
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@type user: C{twisted.protocols.smtp.User}
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@param user: The user to check
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@param memo: A record of the addresses already considered while
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resolving aliases. The default value should be used by all
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@rtype: No-argument callable
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@return: A C{Deferred} which becomes, or a callable which
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takes no arguments and returns an object implementing C{IMessage}.
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This will be called and the returned object used to deliver the
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message when it arrives.
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@raise twisted.protocols.smtp.SMTPBadRcpt: Raised if the given
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user does not exist in this domain.
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"""A domain in which no user exists.
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This can be used to block off certain domains.
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def exists(self, user):
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raise smtp.SMTPBadRcpt(user)
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def willRelay(self, user, protocol):
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def addUser(self, user, password):
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def startMessage(self, user):
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raise AssertionError, "No code should ever call this method for any reason"
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def getCredentialsCheckers(self):
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"""A file we can write an email too."""
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implements(smtp.IMessage)
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def __init__(self, fp, name, finalName):
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self.finalName = finalName
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def lineReceived(self, line):
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self.fp.write(line+'\n')
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def eomReceived(self):
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os.rename(self.name, self.finalName)
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return defer.succeed(self.finalName)
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def connectionLost(self):
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class MailService(service.MultiService):
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"""An email service."""
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service.MultiService.__init__(self)
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# Domains and portals for "client" protocols - POP3, IMAP4, etc
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self.domains = DomainWithDefaultDict({}, BounceDomain())
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self.monitor = FileMonitoringService()
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self.monitor.setServiceParent(self)
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self.smtpPortal = cred.portal.Portal(self)
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def getPOP3Factory(self):
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return protocols.POP3Factory(self)
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def getSMTPFactory(self):
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return protocols.SMTPFactory(self, self.smtpPortal)
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def getESMTPFactory(self):
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return protocols.ESMTPFactory(self, self.smtpPortal)
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def addDomain(self, name, domain):
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portal = cred.portal.Portal(domain)
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map(portal.registerChecker, domain.getCredentialsCheckers())
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self.domains[name] = domain
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self.portals[name] = portal
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if self.aliases and IAliasableDomain.providedBy(domain):
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domain.setAliasGroup(self.aliases)
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def setQueue(self, queue):
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"""Set the queue for outgoing emails."""
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def requestAvatar(self, avatarId, mind, *interfaces):
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if smtp.IMessageDelivery in interfaces:
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a = protocols.ESMTPDomainDelivery(self, avatarId)
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return smtp.IMessageDelivery, a, lambda: None
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raise NotImplementedError()
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def lookupPortal(self, name):
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return self.portals[name]
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def defaultPortal(self):
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return self.portals['']
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class FileMonitoringService(internet.TimerService):
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self.intervals = iter(util.IntervalDifferential([], 60))
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def startService(self):
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service.Service.startService(self)
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def _setupMonitor(self):
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from twisted.internet import reactor
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t, self.index = self.intervals.next()
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self._call = reactor.callLater(t, self._monitor)
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def stopService(self):
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service.Service.stopService(self)
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def monitorFile(self, name, callback, interval=10):
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mtime = os.path.getmtime(name)
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self.files.append([interval, name, callback, mtime])
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self.intervals.addInterval(interval)
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def unmonitorFile(self, name):
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for i in range(len(self.files)):
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if name == self.files[i][1]:
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self.intervals.removeInterval(self.files[i][0])
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if self.index is not None:
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name, callback, mtime = self.files[self.index][1:]
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now = os.path.getmtime(name)
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log.msg("%s changed, notifying listener" % (name,))
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self.files[self.index][3] = now
added
removed
src/twisted/mail/mail.py
