Merge tag '0.8.0'

Tag leap.mx version 0.8.0

# gpg: Signature made Mon 18 Apr 2016 12:03:24 PM BOT
# gpg:                using RSA key 1CAF6C5B9F720808
# gpg: Good signature from "Kaliyuga <kaliyuga@riseup.net>" [ultimate]
# gpg:                 aka "Kali Kaneko (leap communications) <kali@leap.se>" [ultimate]

10 files changed, 941 insertions, 201 deletions

diff --git a/src/leap/mx/_version.py b/src/leap/mx/_version.py
index 2367de5..ed9fc86 100644
--- a/src/leap/mx/_version.py
+++ b/src/leap/mx/_version.py
@@ -1,74 +1,157 @@
 
-IN_LONG_VERSION_PY = True
 # This file helps to compute a version number in source trees obtained from
 # git-archive tarball (such as those provided by githubs download-from-tag
-# feature). Distribution tarballs (build by setup.py sdist) and build
+# feature). Distribution tarballs (built by setup.py sdist) and build
 # directories (produced by setup.py build) will contain a much shorter file
 # that just contains the computed version number.
 
 # This file is released into the public domain. Generated by
-# versioneer-0.7+ (https://github.com/warner/python-versioneer)
-
-# these strings will be replaced by git during git-archive
-git_refnames = "$Format:%d$"
-git_full = "$Format:%H$"
+# versioneer-0.16 (https://github.com/warner/python-versioneer)
 
+"""Git implementation of _version.py."""
 
+import errno
+import os
+import re
 import subprocess
 import sys
 
-def run_command(args, cwd=None, verbose=False):
-    try:
-        # remember shell=False, so use git.cmd on windows, not just git
-        p = subprocess.Popen(args, stdout=subprocess.PIPE, cwd=cwd)
-    except EnvironmentError:
-        e = sys.exc_info()[1]
+
+def get_keywords():
+    """Get the keywords needed to look up the version information."""
+    # these strings will be replaced by git during git-archive.
+    # setup.py/versioneer.py will grep for the variable names, so they must
+    # each be defined on a line of their own. _version.py will just call
+    # get_keywords().
+    git_refnames = "$Format:%d$"
+    git_full = "$Format:%H$"
+    keywords = {"refnames": git_refnames, "full": git_full}
+    return keywords
+
+
+class VersioneerConfig:
+    """Container for Versioneer configuration parameters."""
+
+
+def get_config():
+    """Create, populate and return the VersioneerConfig() object."""
+    # these strings are filled in when 'setup.py versioneer' creates
+    # _version.py
+    cfg = VersioneerConfig()
+    cfg.VCS = "git"
+    cfg.style = "pep440"
+    cfg.tag_prefix = ""
+    cfg.parentdir_prefix = "None"
+    cfg.versionfile_source = "src/leap/mx/_version.py"
+    cfg.verbose = False
+    return cfg
+
+
+class NotThisMethod(Exception):
+    """Exception raised if a method is not valid for the current scenario."""
+
+
+LONG_VERSION_PY = {}
+HANDLERS = {}
+
+
+def register_vcs_handler(vcs, method):  # decorator
+    """Decorator to mark a method as the handler for a particular VCS."""
+    def decorate(f):
+        """Store f in HANDLERS[vcs][method]."""
+        if vcs not in HANDLERS:
+            HANDLERS[vcs] = {}
+        HANDLERS[vcs][method] = f
+        return f
+    return decorate
+
+
+def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False):
+    """Call the given command(s)."""
+    assert isinstance(commands, list)
+    p = None
+    for c in commands:
+        try:
+            dispcmd = str([c] + args)
+            # remember shell=False, so use git.cmd on windows, not just git
+            p = subprocess.Popen([c] + args, cwd=cwd, stdout=subprocess.PIPE,
+                                 stderr=(subprocess.PIPE if hide_stderr
+                                         else None))
+            break
+        except EnvironmentError:
+            e = sys.exc_info()[1]
+            if e.errno == errno.ENOENT:
+                continue
+            if verbose:
+                print("unable to run %s" % dispcmd)
+                print(e)
+            return None
+    else:
         if verbose:
-            print("unable to run %s" % args[0])
-            print(e)
+            print("unable to find command, tried %s" % (commands,))
         return None
     stdout = p.communicate()[0].strip()
-    if sys.version >= '3':
+    if sys.version_info[0] >= 3:
         stdout = stdout.decode()
     if p.returncode != 0:
         if verbose:
-            print("unable to run %s (error)" % args[0])
+            print("unable to run %s (error)" % dispcmd)
         return None
     return stdout
 
 
-import sys
-import re
-import os.path
+def versions_from_parentdir(parentdir_prefix, root, verbose):
+    """Try to determine the version from the parent directory name.
+
+    Source tarballs conventionally unpack into a directory that includes
+    both the project name and a version string.
+    """
+    dirname = os.path.basename(root)
+    if not dirname.startswith(parentdir_prefix):
+        if verbose:
+            print("guessing rootdir is '%s', but '%s' doesn't start with "
+                  "prefix '%s'" % (root, dirname, parentdir_prefix))
+        raise NotThisMethod("rootdir doesn't start with parentdir_prefix")
+    return {"version": dirname[len(parentdir_prefix):],
+            "full-revisionid": None,
+            "dirty": False, "error": None}
 
-def get_expanded_variables(versionfile_source):
+
+@register_vcs_handler("git", "get_keywords")
+def git_get_keywords(versionfile_abs):
+    """Extract version information from the given file."""
     # the code embedded in _version.py can just fetch the value of these
-    # variables. When used from setup.py, we don't want to import
-    # _version.py, so we do it with a regexp instead. This function is not
-    # used from _version.py.
-    variables = {}
+    # keywords. When used from setup.py, we don't want to import _version.py,
+    # so we do it with a regexp instead. This function is not used from
+    # _version.py.
+    keywords = {}
     try:
-        f = open(versionfile_source,"r")
+        f = open(versionfile_abs, "r")
         for line in f.readlines():
             if line.strip().startswith("git_refnames ="):
                 mo = re.search(r'=\s*"(.*)"', line)
                 if mo:
-                    variables["refnames"] = mo.group(1)
+                    keywords["refnames"] = mo.group(1)
             if line.strip().startswith("git_full ="):
                 mo = re.search(r'=\s*"(.*)"', line)
                 if mo:
-                    variables["full"] = mo.group(1)
+                    keywords["full"] = mo.group(1)
         f.close()
     except EnvironmentError:
         pass
-    return variables
+    return keywords
+
 
-def versions_from_expanded_variables(variables, tag_prefix, verbose=False):
-    refnames = variables["refnames"].strip()
+@register_vcs_handler("git", "keywords")
+def git_versions_from_keywords(keywords, tag_prefix, verbose):
+    """Get version information from git keywords."""
+    if not keywords:
+        raise NotThisMethod("no keywords at all, weird")
+    refnames = keywords["refnames"].strip()
     if refnames.startswith("$Format"):
         if verbose:
-            print("variables are unexpanded, not using")
-        return {} # unexpanded, so not in an unpacked git-archive tarball
+            print("keywords are unexpanded, not using")
+        raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
     refs = set([r.strip() for r in refnames.strip("()").split(",")])
     # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
     # just "foo-1.0". If we see a "tag: " prefix, prefer those.
@@ -93,111 +176,309 @@ def versions_from_expanded_variables(variables, tag_prefix, verbose=False):
             r = ref[len(tag_prefix):]
             if verbose:
                 print("picking %s" % r)
-            return { "version": r,
-                     "full": variables["full"].strip() }
-    # no suitable tags, so we use the full revision id
+            return {"version": r,
+                    "full-revisionid": keywords["full"].strip(),
+                    "dirty": False, "error": None
+                    }
+    # no suitable tags, so version is "0+unknown", but full hex is still there
     if verbose:
-        print("no suitable tags, using full revision id")
-    return { "version": variables["full"].strip(),
-             "full": variables["full"].strip() }
-
-def versions_from_vcs(tag_prefix, versionfile_source, verbose=False):
-    # this runs 'git' from the root of the source tree. That either means
-    # someone ran a setup.py command (and this code is in versioneer.py, so
-    # IN_LONG_VERSION_PY=False, thus the containing directory is the root of
-    # the source tree), or someone ran a project-specific entry point (and
-    # this code is in _version.py, so IN_LONG_VERSION_PY=True, thus the
-    # containing directory is somewhere deeper in the source tree). This only
-    # gets called if the git-archive 'subst' variables were *not* expanded,
-    # and _version.py hasn't already been rewritten with a short version
-    # string, meaning we're inside a checked out source tree.
+        print("no suitable tags, using unknown + full revision id")
+    return {"version": "0+unknown",
+            "full-revisionid": keywords["full"].strip(),
+            "dirty": False, "error": "no suitable tags"}
 
-    try:
-        here = os.path.abspath(__file__)
-    except NameError:
-        # some py2exe/bbfreeze/non-CPython implementations don't do __file__
-        return {} # not always correct
-
-    # versionfile_source is the relative path from the top of the source tree
-    # (where the .git directory might live) to this file. Invert this to find
-    # the root from __file__.
-    root = here
-    if IN_LONG_VERSION_PY:
-        for i in range(len(versionfile_source.split("/"))):
-            root = os.path.dirname(root)
-    else:
-        root = os.path.dirname(here)
+
+@register_vcs_handler("git", "pieces_from_vcs")
+def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command):
+    """Get version from 'git describe' in the root of the source tree.
+
+    This only gets called if the git-archive 'subst' keywords were *not*
+    expanded, and _version.py hasn't already been rewritten with a short
+    version string, meaning we're inside a checked out source tree.
+    """
     if not os.path.exists(os.path.join(root, ".git")):
         if verbose:
             print("no .git in %s" % root)
-        return {}
+        raise NotThisMethod("no .git directory")
 
-    GIT = "git"
+    GITS = ["git"]
     if sys.platform == "win32":
-        GIT = "git.cmd"
-    stdout = run_command([GIT, "describe", "--tags", "--dirty", "--always"],
-                         cwd=root)
-    if stdout is None:
-        return {}
-    if not stdout.startswith(tag_prefix):
-        if verbose:
-            print("tag '%s' doesn't start with prefix '%s'" % (stdout, tag_prefix))
-        return {}
-    tag = stdout[len(tag_prefix):]
-    stdout = run_command([GIT, "rev-parse", "HEAD"], cwd=root)
-    if stdout is None:
-        return {}
-    full = stdout.strip()
-    if tag.endswith("-dirty"):
-        full += "-dirty"
-    return {"version": tag, "full": full}
-
-
-def versions_from_parentdir(parentdir_prefix, versionfile_source, verbose=False):
-    if IN_LONG_VERSION_PY:
-        # We're running from _version.py. If it's from a source tree
-        # (execute-in-place), we can work upwards to find the root of the
-        # tree, and then check the parent directory for a version string. If
-        # it's in an installed application, there's no hope.
-        try:
-            here = os.path.abspath(__file__)
-        except NameError:
-            # py2exe/bbfreeze/non-CPython don't have __file__
-            return {} # without __file__, we have no hope
+        GITS = ["git.cmd", "git.exe"]
+    # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
+    # if there isn't one, this yields HEX[-dirty] (no NUM)
+    describe_out = run_command(GITS, ["describe", "--tags", "--dirty",
+                                      "--always", "--long",
+                                      "--match", "%s*" % tag_prefix],
+                               cwd=root)
+    # --long was added in git-1.5.5
+    if describe_out is None:
+        raise NotThisMethod("'git describe' failed")
+    describe_out = describe_out.strip()
+    full_out = run_command(GITS, ["rev-parse", "HEAD"], cwd=root)
+    if full_out is None:
+        raise NotThisMethod("'git rev-parse' failed")
+    full_out = full_out.strip()
+
+    pieces = {}
+    pieces["long"] = full_out
+    pieces["short"] = full_out[:7]  # maybe improved later
+    pieces["error"] = None
+
+    # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
+    # TAG might have hyphens.
+    git_describe = describe_out
+
+    # look for -dirty suffix
+    dirty = git_describe.endswith("-dirty")
+    pieces["dirty"] = dirty
+    if dirty:
+        git_describe = git_describe[:git_describe.rindex("-dirty")]
+
+    # now we have TAG-NUM-gHEX or HEX
+
+    if "-" in git_describe:
+        # TAG-NUM-gHEX
+        mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
+        if not mo:
+            # unparseable. Maybe git-describe is misbehaving?
+            pieces["error"] = ("unable to parse git-describe output: '%s'"
+                               % describe_out)
+            return pieces
+
+        # tag
+        full_tag = mo.group(1)
+        if not full_tag.startswith(tag_prefix):
+            if verbose:
+                fmt = "tag '%s' doesn't start with prefix '%s'"
+                print(fmt % (full_tag, tag_prefix))
+            pieces["error"] = ("tag '%s' doesn't start with prefix '%s'"
+                               % (full_tag, tag_prefix))
+            return pieces
+        pieces["closest-tag"] = full_tag[len(tag_prefix):]
+
+        # distance: number of commits since tag
+        pieces["distance"] = int(mo.group(2))
+
+        # commit: short hex revision ID
+        pieces["short"] = mo.group(3)
+
+    else:
+        # HEX: no tags
+        pieces["closest-tag"] = None
+        count_out = run_command(GITS, ["rev-list", "HEAD", "--count"],
+                                cwd=root)
+        pieces["distance"] = int(count_out)  # total number of commits
+
+    return pieces
+
+
+def plus_or_dot(pieces):
+    """Return a + if we don't already have one, else return a ."""
+    if "+" in pieces.get("closest-tag", ""):
+        return "."
+    return "+"
+
+
+def render_pep440(pieces):
+    """Build up version string, with post-release "local version identifier".
+
+    Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
+    get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty
+
+    Exceptions:
+    1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"] or pieces["dirty"]:
+            rendered += plus_or_dot(pieces)
+            rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
+            if pieces["dirty"]:
+                rendered += ".dirty"
+    else:
+        # exception #1
+        rendered = "0+untagged.%d.g%s" % (pieces["distance"],
+                                          pieces["short"])
+        if pieces["dirty"]:
+            rendered += ".dirty"
+    return rendered
+
+
+def render_pep440_pre(pieces):
+    """TAG[.post.devDISTANCE] -- No -dirty.
+
+    Exceptions:
+    1: no tags. 0.post.devDISTANCE
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"]:
+            rendered += ".post.dev%d" % pieces["distance"]
+    else:
+        # exception #1
+        rendered = "0.post.dev%d" % pieces["distance"]
+    return rendered
+
+
+def render_pep440_post(pieces):
+    """TAG[.postDISTANCE[.dev0]+gHEX] .
+
+    The ".dev0" means dirty. Note that .dev0 sorts backwards
+    (a dirty tree will appear "older" than the corresponding clean one),
+    but you shouldn't be releasing software with -dirty anyways.
+
+    Exceptions:
+    1: no tags. 0.postDISTANCE[.dev0]
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"] or pieces["dirty"]:
+            rendered += ".post%d" % pieces["distance"]
+            if pieces["dirty"]:
+                rendered += ".dev0"
+            rendered += plus_or_dot(pieces)
+            rendered += "g%s" % pieces["short"]
+    else:
+        # exception #1
+        rendered = "0.post%d" % pieces["distance"]
+        if pieces["dirty"]:
+            rendered += ".dev0"
+        rendered += "+g%s" % pieces["short"]
+    return rendered
+
+
+def render_pep440_old(pieces):
+    """TAG[.postDISTANCE[.dev0]] .
+
+    The ".dev0" means dirty.
+
+    Eexceptions:
+    1: no tags. 0.postDISTANCE[.dev0]
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"] or pieces["dirty"]:
+            rendered += ".post%d" % pieces["distance"]
+            if pieces["dirty"]:
+                rendered += ".dev0"
+    else:
+        # exception #1
+        rendered = "0.post%d" % pieces["distance"]
+        if pieces["dirty"]:
+            rendered += ".dev0"
+    return rendered
+
+
+def render_git_describe(pieces):
+    """TAG[-DISTANCE-gHEX][-dirty].
+
+    Like 'git describe --tags --dirty --always'.
+
+    Exceptions:
+    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        if pieces["distance"]:
+            rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
+    else:
+        # exception #1
+        rendered = pieces["short"]
+    if pieces["dirty"]:
+        rendered += "-dirty"
+    return rendered
+
+
+def render_git_describe_long(pieces):
+    """TAG-DISTANCE-gHEX[-dirty].
+
+    Like 'git describe --tags --dirty --always -long'.
+    The distance/hash is unconditional.
+
+    Exceptions:
+    1: no tags. HEX[-dirty]  (note: no 'g' prefix)
+    """
+    if pieces["closest-tag"]:
+        rendered = pieces["closest-tag"]
+        rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
+    else:
+        # exception #1
+        rendered = pieces["short"]
+    if pieces["dirty"]:
+        rendered += "-dirty"
+    return rendered
+
+
+def render(pieces, style):
+    """Render the given version pieces into the requested style."""
+    if pieces["error"]:
+        return {"version": "unknown",
+                "full-revisionid": pieces.get("long"),
+                "dirty": None,
+                "error": pieces["error"]}
+
+    if not style or style == "default":
+        style = "pep440"  # the default
+
+    if style == "pep440":
+        rendered = render_pep440(pieces)
+    elif style == "pep440-pre":
+        rendered = render_pep440_pre(pieces)
+    elif style == "pep440-post":
+        rendered = render_pep440_post(pieces)
+    elif style == "pep440-old":
+        rendered = render_pep440_old(pieces)
+    elif style == "git-describe":
+        rendered = render_git_describe(pieces)
+    elif style == "git-describe-long":
+        rendered = render_git_describe_long(pieces)
+    else:
+        raise ValueError("unknown style '%s'" % style)
+
+    return {"version": rendered, "full-revisionid": pieces["long"],
+            "dirty": pieces["dirty"], "error": None}
+
+
+def get_versions():
+    """Get version information or return default if unable to do so."""
+    # I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have
+    # __file__, we can work backwards from there to the root. Some
+    # py2exe/bbfreeze/non-CPython implementations don't do __file__, in which
+    # case we can only use expanded keywords.
+
+    cfg = get_config()
+    verbose = cfg.verbose
+
+    try:
+        return git_versions_from_keywords(get_keywords(), cfg.tag_prefix,
+                                          verbose)
+    except NotThisMethod:
+        pass
+
+    try:
+        root = os.path.realpath(__file__)
         # versionfile_source is the relative path from the top of the source
-        # tree to _version.py. Invert this to find the root from __file__.
-        root = here
-        for i in range(len(versionfile_source.split("/"))):
+        # tree (where the .git directory might live) to this file. Invert
+        # this to find the root from __file__.
+        for i in cfg.versionfile_source.split('/'):
             root = os.path.dirname(root)
-    else:
-        # we're running from versioneer.py, which means we're running from
-        # the setup.py in a source tree. sys.argv[0] is setup.py in the root.
-        here = os.path.abspath(sys.argv[0])
-        root = os.path.dirname(here)
+    except NameError:
+        return {"version": "0+unknown", "full-revisionid": None,
+                "dirty": None,
+                "error": "unable to find root of source tree"}
 
-    # Source tarballs conventionally unpack into a directory that includes
-    # both the project name and a version string.
-    dirname = os.path.basename(root)
-    if not dirname.startswith(parentdir_prefix):
-        if verbose:
-            print("guessing rootdir is '%s', but '%s' doesn't start with prefix '%s'" %
-                  (root, dirname, parentdir_prefix))
-        return None
-    return {"version": dirname[len(parentdir_prefix):], "full": ""}
-
-tag_prefix = ""
-parentdir_prefix = "leap.mx-"
-versionfile_source = "src/leap/mx/_version.py"
-
-def get_versions(default={"version": "unknown", "full": ""}, verbose=False):
-    variables = { "refnames": git_refnames, "full": git_full }
-    ver = versions_from_expanded_variables(variables, tag_prefix, verbose)
-    if not ver:
-        ver = versions_from_vcs(tag_prefix, versionfile_source, verbose)
-    if not ver:
-        ver = versions_from_parentdir(parentdir_prefix, versionfile_source,
-                                      verbose)
-    if not ver:
-        ver = default
-    return ver
+    try:
+        pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose)
+        return render(pieces, cfg.style)
+    except NotThisMethod:
+        pass
+
+    try:
+        if cfg.parentdir_prefix:
+            return versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
+    except NotThisMethod:
+        pass
 
+    return {"version": "0+unknown", "full-revisionid": None,
+            "dirty": None,
+            "error": "unable to compute version"}
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..e9cf4a4 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,
@@ -94,9 +100,10 @@ class ConnectedCouchDB(client.CouchDB):
             pubkey = None
             if result["rows"]:
                 doc = result["rows"][0]["doc"]
-                uuid = doc["user_id"]
-                if "keys" in doc:
-                    pubkey = doc["keys"]["pgp"]
+                if doc["enabled"]:
+                    uuid = doc["user_id"]
+                    if "keys" in doc:
+                        pubkey = doc["keys"]["pgp"]
             return uuid, pubkey
 
         d.addCallback(_get_uuid_and_pubkey_cbk)
@@ -131,3 +138,60 @@ class ConnectedCouchDB(client.CouchDB):
 
         d.addCallbacks(_get_pubkey_cbk, log.err)
         return d
+
+    def getCertExpiry(self, fingerprint):
+        """
+        Query couch and return a deferred that will fire with the expiration
+        date for the cert with the given fingerprint.
+
+        :param fingerprint: The cert fingerprint
+        :type fingerprint: str
+
+        :return: A deferred that will fire with the cert expiration date as a
+                 str.
+        :rtype: Deferred
+        """
+        d = self.openView(docId="Identity",
+                          viewId="cert_expiry_by_fingerprint/",
+                          key=fingerprint,
+                          reduce=False,
+                          include_docs=True)
+
+        def _get_cert_expiry_cbk(result):
+            try:
+                expiry = result["rows"][0]["value"]
+            except (KeyError, IndexError):
+                expiry = None
+            return expiry
+
+        d.addCallback(_get_cert_expiry_cbk)
+        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/fingerprint_resolver.py b/src/leap/mx/fingerprint_resolver.py
new file mode 100644
index 0000000..0a0850d
--- /dev/null
+++ b/src/leap/mx/fingerprint_resolver.py
@@ -0,0 +1,98 @@
+#!/usr/bin/env python
+# -*- encoding: utf-8 -*-
+# fingerprint_resolver.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/>.
+
+"""
+Classes for resolve expiration date of certs.
+
+Test this with postmap -v -q "fingerprint" tcp:localhost:2424
+"""
+
+
+from datetime import datetime
+from twisted.internet.protocol import ServerFactory
+from twisted.protocols import postfix
+from twisted.python import log
+
+from leap.mx.tcp_map import TCP_MAP_CODE_SUCCESS
+from leap.mx.tcp_map import TCP_MAP_CODE_PERMANENT_FAILURE
+
+
+class LEAPPostfixTCPMapFingerprintServer(postfix.PostfixTCPMapServer):
+    """
+    A postfix tcp map fingerprint resolver server.
+    """
+
+    def _cbGot(self, res):
+        """
+        Return a code and message depending on the result of the factory's
+        get().
+
+        :param res: The fingerprint and expiration date of the cert
+        :type res: (str, str)
+        """
+        fingerprint, expiry = (None, None)
+        if res is not None:
+            fingerprint, expiry = res
+
+        if expiry is None:
+            code = TCP_MAP_CODE_PERMANENT_FAILURE
+            msg = "NOT FOUND SRY"
+        elif expiry < datetime.utcnow().strftime("%Y-%m-%d"):
+            code = TCP_MAP_CODE_PERMANENT_FAILURE
+            msg = "EXPIRED CERT"
+        else:
+            # properly encode expiry, otherwise twisted complains when replying
+            if isinstance(expiry, unicode):
+                expiry = expiry.encode("utf8")
+            code = TCP_MAP_CODE_SUCCESS
+            msg = fingerprint + " " + expiry
+
+        self.sendCode(code, postfix.quote(msg))
+
+
+class FingerprintResolverFactory(ServerFactory, object):
+    """
+    A factory for postfix tcp map fingerprint resolver servers.
+    """
+
+    protocol = LEAPPostfixTCPMapFingerprintServer
+
+    def __init__(self, couchdb):
+        """
+        Initialize the factory.
+
+        :param couchdb: A CouchDB client.
+        :type couchdb: leap.mx.couchdbhelper.ConnectedCouchDB
+        """
+        self._cdb = couchdb
+
+    def get(self, fingerprint):
+        """
+        Look up the cert expiration date based on fingerprint.
+
+        :param fingerprint: The cert fingerprint.
+        :type fingerprint: str
+
+        :return: A deferred that will be fired with the expiration date.
+        :rtype: Deferred
+        """
+        log.msg("look up: %s" % (fingerprint,))
+        d = self._cdb.getCertExpiry(fingerprint.lower())
+        d.addCallback(lambda expiry: (fingerprint, expiry))
+        d.addErrback(log.err)
+        return d
diff --git a/src/leap/mx/mail_receiver.py b/src/leap/mx/mail_receiver.py
index 446fd38..7c5a368 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
@@ -40,6 +40,7 @@ import signal
 import json
 import email.utils
 
+from datetime import datetime, timedelta
 from email import message_from_string
 
 from twisted.application.service import Service, IService
@@ -51,7 +52,7 @@ 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 +76,16 @@ class MailReceiver(Service):
     """
     RETRY_DIR_WATCH_DELAY = 60 * 5  # 5 minutes
 
-    def __init__(self, mail_couch_url, users_cdb, directories, bounce_from,
+    """
+    Time delta to keep stalled emails
+    """
+    MAX_BOUNCE_DELTA = timedelta(days=5)
+
+    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
@@ -98,11 +100,11 @@ 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
         self._bounce_subject = bounce_subject
+        self._bounce_timestamp = {}
         self._processing_skipped = False
 
     def startService(self):
@@ -171,24 +173,21 @@ class MailReceiver(Service):
         :param pubkey: public key for the owner of the message
         :type pubkey: str
         :param message: message contents
-        :type message: email.message.Message
+        :type message: str
 
         :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 "
                     "I know: %r" % (pubkey,))
             return None
 
-        # 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}
+        data = {'incoming': True, 'content': message}
         if pubkey is None or len(pubkey) == 0:
             doc.content = {
                 self.INCOMING_KEY: True,
@@ -203,16 +202,6 @@ 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 +214,44 @@ 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 +273,7 @@ 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 +295,7 @@ 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):
         """
@@ -395,10 +373,6 @@ class MailReceiver(Service):
                 defer.returnValue(None)
             log.msg("Mail owner: %s" % (uuid,))
 
-            if uuid is None:
-                log.msg("BUG: There was no uuid!")
-                defer.returnValue(None)
-
             pubkey = yield self._users_cdb.getPubkey(uuid)
             if pubkey is None or len(pubkey) == 0:
                 log.msg(
@@ -411,10 +385,31 @@ class MailReceiver(Service):
                 defer.returnValue(None)
 
             log.msg("Encrypting message to %s's pubkey" % (uuid,))
-            doc = yield self._encrypt_message(pubkey, msg)
+            try:
+                doc = yield self._encrypt_message(pubkey, mail_data)
 
-            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)
+            except Exception as e:
+                yield self._bounce_with_timeout(filepath, msg, e)
+
+    @defer.inlineCallbacks
+    def _bounce_with_timeout(self, filepath, msg, error):
+        if filepath not in self._bounce_timestamp:
+            self._bounce_timestamp[filepath] = datetime.now()
+            log.msg("New stalled email {0!r}: {1!r}".format(filepath, error))
+            defer.returnValue(None)
+
+        current_delta = datetime.now() - self._bounce_timestamp[filepath]
+        if current_delta > self.MAX_BOUNCE_DELTA:
+            log.msg("Bouncing stalled email {0!r}: {1!r}"
+                    .format(filepath, error))
+            bounce_reason = "There was a problem in the server and the " \
+                            "email could not be delivered."
+            yield self._bounce_message(msg, filepath, bounce_reason)
+        else:
+            log.msg("Still stalled email {0!r} for the last {1}: {2!r}"
+                    .format(filepath, str(current_delta), error))
 
     @defer.inlineCallbacks
     def _process_incoming_email(self, otherself, filepath, mask):
@@ -440,4 +435,3 @@ 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..33967ea
--- /dev/null
+++ b/src/leap/mx/tests/test_mail_receiver.py
@@ -0,0 +1,304 @@
+#!/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 codecs
+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))
+
+    @defer.inlineCallbacks
+    def test_misleading_encoding(self):
+        msg, path = self.addMail(
+            "ñáûä", headers={'Content-Transfer-Encoding': '7Bit'})
+        uuid, doc = yield self.defer_put_doc
+        self.assertEqual(uuid, UUID)
+        decmsg = self.decryptDoc(doc)
+        self.assertEqual(unicode(msg, "utf-8"), decmsg)
+        self.assertFalse(os.path.exists(path))
+
+    def addMail(self, body="", filename="foo", to=ADDRESS,
+                frm="someone@domain.org", subject="sent subject",
+                headers={}):
+        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)
+        for header, value in headers.iteritems():
+            msg.add_header(header, value)
+        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)
+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+=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