Merge branch 'develop' into debian/platform-0.8

8 files changed, 355 insertions, 58 deletions

diff --git a/src/leap/mx/alias_resolver.py b/src/leap/mx/alias_resolver.py
index bf7a58b..a5b5107 100644
--- a/src/leap/mx/alias_resolver.py
+++ b/src/leap/mx/alias_resolver.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 # alias_resolver.py
-# Copyright (C) 2013 LEAP
+# Copyright (C) 2013, 2015 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
@@ -60,6 +60,7 @@ class LEAPPostfixTCPMapAliasServer(postfix.PostfixTCPMapServer):
                 TCP_MAP_CODE_PERMANENT_FAILURE,
                 postfix.quote("NOT FOUND SRY"))
         else:
+            uuid += "@deliver.local"
             # properly encode uuid, otherwise twisted complains when replying
             if isinstance(uuid, unicode):
                 uuid = uuid.encode("utf8")
diff --git a/src/leap/mx/check_recipient_access.py b/src/leap/mx/check_recipient_access.py
index f994e78..67bfd04 100644
--- a/src/leap/mx/check_recipient_access.py
+++ b/src/leap/mx/check_recipient_access.py
@@ -43,7 +43,6 @@ class LEAPPostFixTCPMapAccessServer(postfix.PostfixTCPMapServer):
     are looked up by the factory, and will return a permanent or a temporary
     failure in case either the user or the key don't exist, respectivelly.
     """
-
     def _cbGot(self, value):
         """
         Return a code and message depending on the result of the factory's
@@ -65,7 +64,7 @@ class LEAPPostFixTCPMapAccessServer(postfix.PostfixTCPMapServer):
         elif pubkey is None:
             self.sendCode(
                 TCP_MAP_CODE_TEMPORARY_FAILURE,
-                postfix.quote("4.7.13 USER ACCOUNT DISABLED"))
+                postfix.quote("4.7.13 NO PUBKEY FOUND"))
         else:
             self.sendCode(
                 TCP_MAP_CODE_SUCCESS,
@@ -85,4 +84,3 @@ class CheckRecipientAccessFactory(LEAPPostfixTCPMapServerFactory):
     @property
     def _query_message(self):
         return "check recipient access"
-
diff --git a/src/leap/mx/couchdbhelper.py b/src/leap/mx/couchdbhelper.py
index 1752b4e..115ecbe 100644
--- a/src/leap/mx/couchdbhelper.py
+++ b/src/leap/mx/couchdbhelper.py
@@ -23,7 +23,9 @@ maps, user UUIDs, and GPG keyIDs.
 
 
 from paisley import client
+from twisted.internet import defer
 from twisted.python import log
+from leap.soledad.common.couch import CouchDatabase
 
 
 class ConnectedCouchDB(client.CouchDB):
@@ -50,6 +52,10 @@ class ConnectedCouchDB(client.CouchDB):
         :param str password: (optional) The password for authorization.
         :type password: str
         """
+        self._mail_couch_url = "http://%s:%s@%s:%s" % (username,
+                                                       password,
+                                                       host,
+                                                       port)
         client.CouchDB.__init__(self,
                                 host,
                                 port=port,
@@ -131,3 +137,32 @@ class ConnectedCouchDB(client.CouchDB):
 
         d.addCallbacks(_get_pubkey_cbk, log.err)
         return d
+
+    def put_doc(self, uuid, doc):
+        """
+        Update a document.
+
+        If the document currently has conflicts, put will fail.
+        If the database specifies a maximum document size and the document
+        exceeds it, put will fail and raise a DocumentTooBig exception.
+
+        :param uuid: The uuid of a user
+        :type uuid: str
+        :param doc: A Document with new content.
+        :type doc: leap.soledad.common.couch.CouchDocument
+
+        :return: A deferred which fires with the new revision identifier for
+                 the document if the Document object has being updated, or
+                 which fails with CouchDBError if there was any error.
+        """
+        # TODO: that should be implemented with paisley
+        url = self._mail_couch_url + "/user-%s" % (uuid,)
+        try:
+            db = CouchDatabase.open_database(url, create=False)
+            return defer.succeed(db.put_doc(doc))
+        except Exception as e:
+            return defer.fail(CouchDBError(e.message))
+
+
+class CouchDBError(Exception):
+    pass
diff --git a/src/leap/mx/mail_receiver.py b/src/leap/mx/mail_receiver.py
index 446fd38..ea13658 100644
--- a/src/leap/mx/mail_receiver.py
+++ b/src/leap/mx/mail_receiver.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # -*- encoding: utf-8 -*-
 # mail_receiver.py
-# Copyright (C) 2013 LEAP
+# Copyright (C) 2013, 2015 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
@@ -51,7 +51,7 @@ from zope.interface import implements
 from leap.soledad.common.crypto import EncryptionSchemes
 from leap.soledad.common.crypto import ENC_JSON_KEY
 from leap.soledad.common.crypto import ENC_SCHEME_KEY
-from leap.soledad.common.couch import CouchDatabase, CouchDocument
+from leap.soledad.common.document import ServerDocument
 
 from leap.keymanager import openpgp
 
@@ -75,15 +75,11 @@ class MailReceiver(Service):
     """
     RETRY_DIR_WATCH_DELAY = 60 * 5  # 5 minutes
 
-    def __init__(self, mail_couch_url, users_cdb, directories, bounce_from,
+    def __init__(self, users_cdb, directories, bounce_from,
                  bounce_subject):
         """
         Constructor
 
-        :param mail_couch_url: URL prefix for the couchdb where mail
-        should be stored
-        :type mail_couch_url: str
-
         :param users_cdb: CouchDB instance from where to get the uuid
                           and pubkey for a user
         :type users_cdb: ConnectedCouchDB
@@ -98,7 +94,6 @@ class MailReceiver(Service):
         :type bounce_subject: str
         """
         # IService doesn't define an __init__
-        self._mail_couch_url = mail_couch_url
         self._users_cdb = users_cdb
         self._directories = directories
         self._bounce_from = bounce_from
@@ -175,7 +170,7 @@ class MailReceiver(Service):
 
         :return: doc to sync with Soledad or None, None if something
                  went wrong.
-        :rtype: CouchDocument
+        :rtype: ServerDocument
         """
         if pubkey is None or len(pubkey) == 0:
             log.msg("_encrypt_message: Something went wrong, here's all "
@@ -185,7 +180,7 @@ class MailReceiver(Service):
         # find message's encoding
         message_as_string = message.as_string()
 
-        doc = CouchDocument(doc_id=str(pyuuid.uuid4()))
+        doc = ServerDocument(doc_id=str(pyuuid.uuid4()))
 
         # store plain text if pubkey is not available
         data = {'incoming': True, 'content': message_as_string}
@@ -203,16 +198,6 @@ class MailReceiver(Service):
         with openpgp.TempGPGWrapper(gpgbinary='/usr/bin/gpg') as gpg:
             gpg.import_keys(pubkey)
             key = gpg.list_keys().pop()
-
-            # add X-Leap-Provenance header if message is not encrypted
-            if message.get_content_type() != 'multipart/encrypted' and \
-                    '-----BEGIN PGP MESSAGE-----' not in \
-                    message_as_string:
-                message.add_header(
-                    'X-Leap-Provenance',
-                    email.utils.formatdate(),
-                    pubkey=key["keyid"])
-                data = {'incoming': True, 'content': message.as_string()}
             doc.content = {
                 self.INCOMING_KEY: True,
                 self.ERROR_DECRYPTING_KEY: False,
@@ -225,55 +210,44 @@ class MailReceiver(Service):
 
         return doc
 
+    @defer.inlineCallbacks
     def _export_message(self, uuid, doc):
         """
-        Given a UUID and a CouchDocument, it saves it directly in the
+        Given a UUID and a ServerDocument, it saves it directly in the
         couchdb that serves as a backend for Soledad, in a db
         accessible to the recipient of the mail.
 
         :param uuid: the mail owner's uuid
         :type uuid: str
-        :param doc: CouchDocument that represents the email
-        :type doc: CouchDocument
+        :param doc: ServerDocument that represents the email
+        :type doc: ServerDocument
 
-        :return: True if it's ok to remove the message, False
-                 otherwise
-        :rtype: bool
+        :return: A Deferred which fires if it's ok to remove the message,
+                 or fails otherwise
+        :rtype: Deferred
         """
         if uuid is None or doc is None:
             log.msg("_export_message: Something went wrong, here's all "
                     "I know: %r | %r" % (uuid, doc))
-            return False
+            raise Exception("No uuid or doc")
 
         log.msg("Exporting message for %s" % (uuid,))
-
-        db = CouchDatabase(self._mail_couch_url, "user-%s" % (uuid,))
-        db.put_doc(doc)
-
+        yield self._users_cdb.put_doc(uuid, doc)
         log.msg("Done exporting")
 
-        return True
-
-    def _conditional_remove(self, do_remove, filepath):
+    def _remove(self, filepath):
         """
-        Removes the message if do_remove is True.
+        Removes the message.
 
-        :param do_remove: True if the message should be removed, False
-                          otherwise
-        :type do_remove: bool
         :param filepath: path to the mail
         :type filepath: twisted.python.filepath.FilePath
         """
-        if do_remove:
-            # remove the original mail
-            try:
-                log.msg("Removing %r" % (filepath.path,))
-                filepath.remove()
-                log.msg("Done removing")
-            except Exception:
-                log.err()
-        else:
-            log.msg("Not removing %r" % (filepath.path,))
+        try:
+            log.msg("Removing %r" % (filepath.path,))
+            filepath.remove()
+            log.msg("Done removing")
+        except Exception:
+            log.err()
 
     def _get_owner(self, mail):
         """
@@ -295,7 +269,7 @@ class MailReceiver(Service):
             return None
         final_address = delivereds.pop(0)
         _, addr = email.utils.parseaddr(final_address)
-        uuid, _ = addr.split("@")
+        uuid = addr.split("@")[0]
         return uuid
 
     @defer.inlineCallbacks
@@ -317,7 +291,7 @@ class MailReceiver(Service):
         except InvalidReturnPathError:
             # give up bouncing this message!
             log.msg("Will not bounce message because of invalid return path.")
-        yield self._conditional_remove(True, filepath)
+        yield self._remove(filepath)
 
     def sleep(self, secs):
         """
@@ -413,8 +387,8 @@ class MailReceiver(Service):
             log.msg("Encrypting message to %s's pubkey" % (uuid,))
             doc = yield self._encrypt_message(pubkey, msg)
 
-            do_remove = yield self._export_message(uuid, doc)
-            yield self._conditional_remove(do_remove, filepath)
+            yield self._export_message(uuid, doc)
+            yield self._remove(filepath)
 
     @defer.inlineCallbacks
     def _process_incoming_email(self, otherself, filepath, mask):
@@ -440,4 +414,3 @@ class MailReceiver(Service):
         except Exception as e:
             log.msg("Something went wrong while processing {0!r}: {1!r}"
                     .format(filepath, e))
-            log.err()
diff --git a/src/leap/mx/tcp_map.py b/src/leap/mx/tcp_map.py
index 96db70a..07bf51d 100644
--- a/src/leap/mx/tcp_map.py
+++ b/src/leap/mx/tcp_map.py
@@ -41,7 +41,6 @@ class LEAPPostfixTCPMapServerFactory(ServerFactory, object):
 
     __metaclass__ = ABCMeta
 
-
     def __init__(self, couchdb):
         """
         Initialize the factory.
diff --git a/src/leap/mx/tests/__init__.py b/src/leap/mx/tests/__init__.py
index 2002c48..13df919 100644
--- a/src/leap/mx/tests/__init__.py
+++ b/src/leap/mx/tests/__init__.py
@@ -22,6 +22,7 @@ code, using twisted.trial, for testing leap_mx.
 
 __all__ = ['test_alias_resolver']
 
+
 def run():
     """xxx fill me in"""
     pass
diff --git a/src/leap/mx/tests/test_mail_receiver.py b/src/leap/mx/tests/test_mail_receiver.py
new file mode 100644
index 0000000..e72cb1a
--- /dev/null
+++ b/src/leap/mx/tests/test_mail_receiver.py
@@ -0,0 +1,290 @@
+#!/usr/bin/env python
+# -*- encoding: utf-8 -*-
+# test_mail_receiver.py
+# Copyright (C) 2015 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/>.
+"""
+MailReceiver tests
+"""
+
+import json
+import os
+import os.path
+import shutil
+import tempfile
+
+from email.message import Message
+from twisted.internet import defer, reactor
+from twisted.trial import unittest
+
+from leap.keymanager import openpgp
+from leap.mx.couchdbhelper import CouchDBError
+from leap.mx.mail_receiver import MailReceiver
+
+
+BOUNCE_ADDRESS = "bounce@leap.se"
+BOUNCE_SUBJECT = "bounce subject"
+ADDRESS = "leap@leap.se"
+UUID = "13d5203bdd09be1e638bdb1d315251cb"
+
+
+class MailReceiverTestCase(unittest.TestCase):
+    def setUp(self):
+        self.directory = tempfile.mkdtemp(prefix="leap_tests-")
+        os.mkdir(os.path.join(self.directory, "new"))
+
+        self.users_cdb = self.usersCdb()
+        self.receiver = MailReceiver(
+            users_cdb=self.users_cdb,
+            directories=[(self.directory, True)],
+            bounce_from=BOUNCE_ADDRESS,
+            bounce_subject=BOUNCE_SUBJECT)
+        self.receiver.startService()
+
+    def tearDown(self):
+        self.receiver.stopService()
+        shutil.rmtree(self.directory)
+
+    def usersCdb(self):
+        self.pubKey = PUBLIC_KEY
+        self.docs = []
+        self.defer_put_doc = defer.Deferred()
+
+        class UsersCdb(object):
+            def getPubkey(_, uuid):
+                return self.pubKey
+
+            def put_doc(_, uuid, doc):
+                self.docs.append({'uuid': uuid, 'doc': doc})
+                if not self.defer_put_doc.called:
+                    reactor.callLater(1, self.defer_put_doc.callback,
+                                      (uuid, doc))
+                return defer.succeed(None)
+
+        return UsersCdb()
+
+    @defer.inlineCallbacks
+    def test_single_mail(self):
+        msg, path = self.addMail("foo bar")
+        uuid, doc = yield self.defer_put_doc
+        self.assertEqual(uuid, UUID)
+        decmsg = self.decryptDoc(doc)
+        self.assertEqual(msg, decmsg)
+        self.assertFalse(os.path.exists(path))
+
+    @defer.inlineCallbacks
+    def test_put_doc_raises(self):
+        defer_called = defer.Deferred()
+
+        def put_doc_raise(*args):
+            defer_called.callback(None)
+            return defer.fail(CouchDBError())
+
+        self.users_cdb.put_doc = put_doc_raise
+        _, path = self.addMail()
+        yield defer_called
+        self.assertTrue(os.path.exists(path))
+
+    def addMail(self, body="", filename="foo", to=ADDRESS,
+                frm="someone@domain.org", subject="sent subject"):
+        msg = Message()
+        msg.add_header("To", to)
+        msg.add_header(
+            "Delivered-To", UUID + "@deliver.local")
+        msg.add_header("From", frm)
+        msg.add_header("Subject", subject)
+        msg.set_payload(body)
+
+        path = os.path.join(self.directory, "new", filename)
+        with open(path, "w") as f:
+            f.write(msg.as_string())
+
+        return msg.as_string(), path
+
+    def decryptDoc(self, doc):
+        encdoc = doc.content['_enc_json']
+        decdoc = {}
+
+        with openpgp.TempGPGWrapper(gpgbinary='/usr/bin/gpg') as gpg:
+            gpg.import_keys(PRIVATE_KEY)
+            decstr = gpg.decrypt(encdoc)
+            decdoc = json.loads(decstr.data)
+
+        self.assertTrue(decdoc['incoming'])
+        return decdoc['content']
+
+
+# key 24D18DDF: public key "Leap Test Key <leap@leap.se>"
+KEY_FINGERPRINT = "E36E738D69173C13D709E44F2F455E2824D18DDF"
+PUBLIC_KEY = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
+mQINBFC9+dkBEADNRfwV23TWEoGc/x0wWH1P7PlXt8MnC2Z1kKaKKmfnglVrpOiz
+iLWoiU58sfZ0L5vHkzXHXCBf6Eiy/EtUIvdiWAn+yASJ1mk5jZTBKO/WMAHD8wTO
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+VPfDR1XKegVb6VStIywF7kmrknM1C5qUY28rdZYWgKorw01hBGV4jTW0cqde3N51
+XT1jnIAa+NoXUM9uQoGYMiwrL7vNsLlyyiW5ayDyV92H/rIuiqhFgbJsHTlsm7I8
+oGheR784BagAA1NIKD1qEO9T6Kz9lzlDaeWS5AUKeXrb7ZJLI1TTCIZx5/DxjLqM
+Tt/RFBpVo9geZQrvLUqLAMwdaUvDXC2c6DaCPXTh65oCZj/hqzlJHH+RoTWWzKI+
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+ZtQ/VymwFL3XdUWV6B/hU4PVAFvO3qlOtdJ6TpE+nEWgcWjCv5g7RjXX
+=MuOY
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+PRIVATE_KEY = """
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
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+=JTFu
+-----END PGP PRIVATE KEY BLOCK-----
+"""
diff --git a/src/leap/mx/tester.py b/src/leap/mx/tests/tester.py
index 05d2d05..05d2d05 100644
--- a/src/leap/mx/tester.py
+++ b/src/leap/mx/tests/tester.py