Initial Checkin

imapserver.py

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+from twisted.mail import imap4, maildir
+from twisted.internet import reactor, defer, protocol
+from twisted.cred import portal, checkers, credentials
+from twisted.cred import error as credError
+from twisted.python import filepath
+from zope.interface import implements
+import time, os, random, pickle
+
+from twittermail import TwitterUserAccount, TwitterImapMailbox, TwitterCredentialsChecker, ObjCache
+
+import email
+
+class MailUserRealm(object):
+  implements(portal.IRealm)
+  avatarInterfaces = {
+    imap4.IAccount: TwitterUserAccount,
+    }
+
+  def __init__(self, cache):
+    self.cache = cache
+
+  def requestAvatar(self, avatarId, mind, *interfaces):
+    for requestedInterface in interfaces:
+      if self.avatarInterfaces.has_key(requestedInterface):
+        # return an instance of the correct class
+        avatarClass = self.avatarInterfaces[requestedInterface]
+        avatar = avatarClass(self.cache)
+        # null logout function: take no arguments and do nothing
+        logout = lambda: None
+        return defer.succeed((requestedInterface, avatar, logout))
+
+    # none of the requested interfaces was supported
+    raise KeyError("None of the requested interfaces is supported")
+
+class IMAPServerProtocol(imap4.IMAP4Server):
+  "Subclass of imap4.IMAP4Server that adds debugging."
+  debug = True
+
+  def lineReceived(self, line):
+    if self.debug:
+      print "CLIENT:", line
+    imap4.IMAP4Server.lineReceived(self, line)
+
+  def sendLine(self, line):
+    imap4.IMAP4Server.sendLine(self, line)
+    if self.debug:
+      print "SERVER:", line
+
+class IMAPFactory(protocol.Factory):
+  protocol = IMAPServerProtocol
+  portal = None # placeholder
+
+  def buildProtocol(self, address):
+    p = self.protocol()
+    p.portal = self.portal
+    p.factory = self
+    return p
+
+if __name__ == "__main__":
+
+    cache = ObjCache()
+
+    portal = portal.Portal(MailUserRealm(cache))
+    portal.registerChecker(TwitterCredentialsChecker(cache))
+
+    factory = IMAPFactory()
+    factory.portal = portal
+
+    reactor.listenTCP(1143, factory)
+    reactor.run()
+
+