Mailman 3 - Twisted - python.org

[Twisted-Python] Remember: slower pizza's more luscious.
by Glyph Lefkowitz May 8, 2001

May 8, 2001

AUSTIN (AP) -- Twisted Matrix Laboratories today unveiled the much-anticipated and much-delayed most recent iteration of their "Twisted Python" product suite. Equipped with more internet and more sticks than ever before, the power to destroy the sun, and a mail server, this release will "pose a significant threat to our competition, as soon as we figure out who we're competing with and for what", according to Evil Overlord Glyph Lefkowitz. Despite the terrifying power and grace that … [View More]

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[Twisted-Python] No Release Today
by Glyph Lefkowitz May 7, 2001

May 7, 2001

In my final round of testing 0.8.5 for release, I discovered some nasty release-critical bugs in moshe's refactoring of twisted.web; I'm surprised I didn't uncover these when I initially looked at it, but I couldn't do a release today with the code in such a half-working state. Since I fixed it in my CVS tree, where most of the names of .net and related classes are different, I need to do some more stress testing; this shouldn't delay the release longer than tuesday; hopefully it'll only … [View More]

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[Twisted-Python] Brown-paperbag Bug in Mail Fixed
by Moshe Zadka May 5, 2001

May 5, 2001

In conclusion, now it works with 3rd parties which implement APOP (namely, Python's poplib). Yay! -- "I'll be ex-DPL soon anyway so I'm |LUKE: Is Perl better than Python? looking for someplace else to grab power."|YODA: No...no... no. Quicker, -- Wichert Akkerman (on debian-private)| easier, more seductive. For public key, finger moshez(a)debian.org |http://www.{python,debian,gnu}.org

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[Twisted-Python] Python is just Too Easy
by Moshe Zadka May 5, 2001

May 5, 2001

I know I continually promised that 0.8.5 will be the "hard to configure but working SMTP/POP3 servers". Well, sorry... I've checked in a nifty little utility called bin/mkmailserver Unfortunately, there's no documentation yet, so here's a rough explanation on how to use it: use bin/mkmailserver create <smtp port> <pop3 port> And you'll have a mail.spl which always answers "I don't know what you're talking about". To add support for a domain, run bin/mkmailserver domain <smtp … [View More]

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[Twisted-Python] Mail has been refactored...again ;-)
by Moshe Zadka May 5, 2001

May 5, 2001

Yes, I've finally gone after the dreaded mail refactoring. twisted.smtp and twisted.pop3 are no more, and in fact the whole SMTP/POP3 support is about 8 lines of that file. Most of the file is about *mail* as a concept. Not that SMTP and POP3 concepts don't show through -- that would be useless abstraction. E.g., domains understand that there's a concept of challenge/response authentication for POP3, and that SMTP first checks for a user's existance and then asks to save a message for the user.… [View More]

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[Twisted-Python] mail support
by Moshe Zadka May 4, 2001

May 4, 2001

With the latest CVS version, we have passable SMTP/POP3 support. If you want to use it, here's a short example: http://moshez.org/mail.tgz Unpack this in your toplevel TwistedPython directory. It will create a file bin/mksmtpserver and a directory test. Run "bin/mksmtpserver test" And then run the resulting mail.spl It will have an SMTP server on port 2000 which accepts mails only for moshez(a)exmple.com. moshez's password is "moshez", and if you connect to port 2001 via POP3 (only APOP auth … [View More]

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[Twisted-Python] <homer>Oooh, it's good news</homer>
by Moshe Zadka May 3, 2001

May 3, 2001

1. All .protocols that I wrote from scratch have tests in test_twisted. .irc and .telnet are waiting for glyph. 2. twisted.pop3 now uses the POP3 protocol. 3. twisted.smtp now has rudimentary unit tests. I think that finishes the twisted.mail goals for 0.8.5 By 0.9 I hope to have enough to support so you can just issue a bin/mkmailsystem <root> And know that you have a mail system that does not go outside the root, and manages the mail. With some luck, maybe I'll even be able to … [View More]

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[Twisted-Python] SMTP Client Prototype
by Moshe Zadka May 3, 2001

May 3, 2001

Hi! Most of you already know how obsessed I am with e-mail... Here is the latest thing -- a prototype for an SMTP client. Later I just want to have an OutgoingQueue domain which can be used to relay mail. The first stage, which I think is doable by 0.9, is to have so-called smart host capability -- this would save us the trouble of going after MX records ourselves, and still leave us with something very functional. SMTP_CODE = re.compile('(?P<code>\d\d\d)(?P<continuation>[- ])') … [View More]DO_HELO, DO_FROM, DO_TO, DO_DATA = range(3) class SMTPClientHandler(basic.LineReceiver): mode = DO_HELO hostname = 'localhost' lastCommand = None def handleLine(self, line): m = SMTP_CODE.match(line) if not m: raise SMTPError if m.groupdict()['continuation'] == ' ': self.handleCode(int(m.groupdict()['code'])) def handleResponse(self, code): if self.lastCommand is None: if code != 250: self.loseConnection() return 0 elif self.lastCommand == 'TO' if (code/100) == 2: self.successfulTo.append(self.lastTo) self.lastTo = None elif self.lastCommand == 'DATA': if code != 354: self.failMessage() self.mode = DO_FROM elif self.lastCommand == 'DID_DATA': if (code/100) == 2: self.doneMessage(self.successfulTo) else: self.failMessage() del self.successfulTo elif self.lastCommand == 'FROM': if (code/100) != 2: self.failMessage() self.mode = DO_FROM elif self.lastCommand == 'HELO': self.loseConnection() return 0 return 1 def handleCode(self, code): if not self.handleResponse(code): return if self.mode is DO_HELO: self.handler.write('HELO %s\r\n' % self.hostname) self.lastCommand = 'HELO' elif self.mode is DO_FROM: message = self.getActiveMessage() if message is None: return self.loseConnection() from_ = message.getFrom() self.mode = DO_TO self.recipients = message.getRecipients() self.sucessfulTo = [] self.handler.write('MAIL FROM:<%s>\r\n' % from_) self.lastCommand = 'FROM' elif self.mode is DO_TO: if not self.recipients: self.lastCommand = 'DATA' self.handler.write('DATA\r\n') else: recipient = self.recipients.pop() self.lastCommand = 'TO' self.lastTo = recipient self.handler.write('RCPT TO:<%s>' % recipient) elif self.mode is DO_DATA: self.lastCommand = 'DID_DATA' self.sendMessage() [View Less]

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[Twisted-Python] Docs
by j.her＠t-online.de May 2, 2001

May 2, 2001

Glyph asked for the standard rant about using XML: - you can use the same set of source files to generate quite different outputs (html, rdf, latex, paper, pdf, etc.), and the tools for this come for free (linux, fbsd, etc. doco projects all use docbook) - you can have differing styles with the same output medium, compare t URLs: http://4suite.org/documents/4Suite/TODO http://twistedmatrix.com/users/jh.twistd/python/moin.cgi/DocBook Test - docbook is a STANDARD way for SEMANTIC … [View More]

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[Twisted-Python] smtp server -- pre-alpha version, please comment on design
by Moshe Zadka May 1, 2001

May 1, 2001

Hi, all! twisted.mail so far has not been coming along nicely. However, I now have some code which when tested will finally bring us to the point where we can have a working e-mail system. Well, not really -- we'll still need to handle *sending* e-mail, which isn't as easy async as you may think... :( Let me say a few general words about the way it works: I wanted to have the same seperation of responsibilities that brings us seperate handler/server/protocol-transformer to continue onto … [View More]actually saving e-mails. Towards this end, I've made the server responsible for managing the list of domains, each of which is an object which can check if it wants to accepts for certain localparts, and to save the e-mail. This should bring us a higher level of testability, since we can have dummy domains which just remember the e-mail messages saved, and then we can bombard the handler with .handleData from us, and so on. But, off to a better life and so on, here is the code for the pre-alpha SMTP server: from twisted.protocols import smtp class VirtualSMTPHandler(smtp.SMTPHandler): seq = 0 def validateTo(self, helo, destination): try: domain = string.split(destination, '@', 1)[1] except IndexError: return 0 if not self.handler.server.domains.has_key(domain): return 0 if not self.handler.server.domains[domain].exists(user): return 0 return 1 def handleMessage(self, helo, origin, recipients, message): for recipient in recipients: user, domain = string.split(destination, '@', 1) self.handler.server.domains[domain].save_message(user, message) class SMTPNetHandler(net.GenericHandler): handler = None def handleData(self, data): if self.handler is None: self.handler = VirtualMaildirSMTPHandler(self) self.handler.handleData(data) def connectionLost(self, why): self.handler = None net.GenericHandler.connectionLost(self, why) class VirtualSMTPServer(net.GenericServer): handler = SMTPNetHandler def __init__(self, *args, **kw): apply(net.GenericServer.__init__, (self,)+args, kw) self.domains = {} def addDomain(self, name, domain): self.domains[name] = domain n = 0 class AbstractMaildirDomain: def __init__(self, root): self.root = root def user_directory(self, user): return None def exists(self, name): return self.user_directory(user) is not None def save_message(self, name, message): dir = self.user_directory(user) name = self._generateMaildirName() filename = os.path.join(dir, 'new', name) fp = open(filename, 'w') try: fp.write(message) finally: fp.close() def _generateMaildirName(self): global n t = str(int(time.time())) s = socket.gethostname() p = os.getpid() n = n+1 return '%s.%s_%s.%s' % (t, p, n, s) class BounceDomain: def exists(self, name): return 0 class DirectoryExistanceMaildirDomain(AbstractMaildirDomain): def user_directory(self, name): dir = os.path.join(self.root, name)): if os.path.isdir(dir): return dir class PostmasterMaildirDomain(AbstractMaildirDomain): def user_directory(self, name): dir = os.path.join(self.root, name)): if os.path.isdir(dir): return dir return os.path.join(self.root, 'postmaster') # This wasn't in the original code, but is a nice example: class SubdomainManager: def __init__(self, domains={}): self.domains = {} self.domains.update(domains) def addDomain(self, name, domain): self.domains[name] = domain def exists(self, user): if not '%' in user: return 0 localpart, remote = string.split(user, '%', 1) if not self.domains.has_key(remote): return 0 if not self.domains[remote].exists(localpart): return 0 return 1 def save_message(self, name, message): localpart, remote = string.split(user, '%', 1) return self.domains[remote].save_message(localpart, message) -- "I'll be ex-DPL soon anyway so I'm |LUKE: Is Perl better than Python? looking for someplace else to grab power."|YODA: No...no... no. Quicker, -- Wichert Akkerman (on debian-private)| easier, more seductive. For public key, finger moshez(a)debian.org |http://www.{python,debian,gnu}.org [View Less]

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