From 23e28bae2c3cb74e00e29ee8add0b73adeb65c2b Mon Sep 17 00:00:00 2001
From: Kali Kaneko <kali@leap.se>
Date: Tue, 4 Feb 2014 10:57:49 -0400
Subject: fixes after review

* Some more docstring completion/fixes.
* Removed unneeded str coertion.
* Handle mailbox name in logs.
* Separate manhole boilerplate into its own file.
---
 src/leap/mail/imap/service/manhole.py | 130 ++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 src/leap/mail/imap/service/manhole.py

(limited to 'src/leap/mail/imap/service/manhole.py')

diff --git a/src/leap/mail/imap/service/manhole.py b/src/leap/mail/imap/service/manhole.py
new file mode 100644
index 0000000..c83ae89
--- /dev/null
+++ b/src/leap/mail/imap/service/manhole.py
@@ -0,0 +1,130 @@
+# -*- coding: utf-8 -*-
+# manhole.py
+# Copyright (C) 2014 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Utilities for enabling the manhole administrative interface into the
+LEAP Mail application.
+"""
+MANHOLE_PORT = 2222
+
+
+def getManholeFactory(namespace, user, secret):
+    """
+    Get an administrative manhole into the application.
+
+    :param namespace: the namespace to show in the manhole
+    :type namespace: dict
+    :param user: the user to authenticate into the administrative shell.
+    :type user: str
+    :param secret: pass for this manhole
+    :type secret: str
+    """
+    import string
+
+    from twisted.cred.portal import Portal
+    from twisted.conch import manhole, manhole_ssh
+    from twisted.conch.insults import insults
+    from twisted.cred.checkers import (
+        InMemoryUsernamePasswordDatabaseDontUse as MemoryDB)
+
+    from rlcompleter import Completer
+
+    class EnhancedColoredManhole(manhole.ColoredManhole):
+        """
+        A Manhole with some primitive autocomplete support.
+        """
+        # TODO use introspection to make life easier
+
+        def find_common(self, l):
+            """
+            find common parts in thelist items
+            ex: 'ab' for ['abcd','abce','abf']
+            requires an ordered list
+            """
+            if len(l) == 1:
+                return l[0]
+
+            init = l[0]
+            for item in l[1:]:
+                for i, (x, y) in enumerate(zip(init, item)):
+                    if x != y:
+                        init = "".join(init[:i])
+                        break
+
+                if not init:
+                    return None
+            return init
+
+        def handle_TAB(self):
+            """
+            Trap the TAB keystroke.
+            """
+            necessarypart = "".join(self.lineBuffer).split(' ')[-1]
+            completer = Completer(globals())
+            if completer.complete(necessarypart, 0):
+                matches = list(set(completer.matches))  # has multiples
+
+                if len(matches) == 1:
+                    length = len(necessarypart)
+                    self.lineBuffer = self.lineBuffer[:-length]
+                    self.lineBuffer.extend(matches[0])
+                    self.lineBufferIndex = len(self.lineBuffer)
+                else:
+                    matches.sort()
+                    commons = self.find_common(matches)
+                    if commons:
+                        length = len(necessarypart)
+                        self.lineBuffer = self.lineBuffer[:-length]
+                        self.lineBuffer.extend(commons)
+                        self.lineBufferIndex = len(self.lineBuffer)
+
+                    self.terminal.nextLine()
+                    while matches:
+                        matches, part = matches[4:], matches[:4]
+                        for item in part:
+                            self.terminal.write('%s' % item.ljust(30))
+                            self.terminal.write('\n')
+                            self.terminal.nextLine()
+
+                self.terminal.eraseLine()
+                self.terminal.cursorBackward(self.lineBufferIndex + 5)
+                self.terminal.write("%s %s" % (
+                    self.ps[self.pn], "".join(self.lineBuffer)))
+
+        def keystrokeReceived(self, keyID, modifier):
+            """
+            Act upon any keystroke received.
+            """
+            self.keyHandlers.update({'\b': self.handle_BACKSPACE})
+            m = self.keyHandlers.get(keyID)
+            if m is not None:
+                m()
+            elif keyID in string.printable:
+                self.characterReceived(keyID, False)
+
+    sshRealm = manhole_ssh.TerminalRealm()
+
+    def chainedProtocolFactory():
+        return insults.ServerProtocol(EnhancedColoredManhole, namespace)
+
+    sshRealm = manhole_ssh.TerminalRealm()
+    sshRealm.chainedProtocolFactory = chainedProtocolFactory
+
+    portal = Portal(
+        sshRealm, [MemoryDB(**{user: secret})])
+
+    f = manhole_ssh.ConchFactory(portal)
+    return f
-- 
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