Initial import

3 years ago · 2ac5d8c79d
--- a/.coveragerc
+++ b/.coveragerc
@ -0,0 +1,2 @@
 [run]
 omit = */__init__.py
--- a/.dockerignore
+++ b/.dockerignore
@ -0,0 +1,6 @@
 .git/
 Dockerfile
 CONTRIBUTING.md
 install_debian.sh
 maintainers.md
 tests/
--- a/.editorconfig
+++ b/.editorconfig
@ -0,0 +1,26 @@
 # this should work for all editors that support .editorconfig!
 #
 # on debian, emacs users should install elpa-editorconfig and vim
 # users should install vim-editorconfig.

 root = true

 [*]
 indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true
 end_of_line = lf
 charset = utf-8
 max_line_length = 79

 [*.py]
 indent_size = 4

 [Makefile]
 indent_style = tab

 [*.ini]
 indent_size = 4

 [*.yml]
 indent_size = 2
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,15 @@
 *.pyc
 __pycache__/
 venv*/
 passwords.txt
 *.swp
 *.egg-info/
 docs/build
 .tox
 .coverage
 htmlcov
 .pytest_cache
 dist
 build
 builds
 *.lockfile
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@ -0,0 +1,42 @@
 include:
  # To get the container scanner running as an artifact
  - template: Container-Scanning.gitlab-ci.yml

 variables:
  DEBIAN_FRONTEND: noninteractive
  # The name of the image would be user/repo:commit-sha
  # Not using $CI_COMMIT_REF_SLUG because that adds the name of the branch
  # and when pushing from a branch and pulling from other the name wouldn't
  # match
  IMAGE: $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA
  # To have a common name that can be referenced from other job
  RELEASE_IMAGE: $CI_REGISTRY_IMAGE:latest

 # The following are jobs to create the dockerimage from docker with the
 # gitlab runner.
 build_docker:
  stage: build
  image: docker:stable
  services:
      - docker:stable-dind
  before_script:
    - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
  script:
    - echo building $IMAGE and releasing as $RELEASE_IMAGE
    - docker info
    - docker build -t $IMAGE .
    - docker push $IMAGE
    # tag it as latest and push it too
    - docker tag $IMAGE $RELEASE_IMAGE
    - docker push $RELEASE_IMAGE
  except:
    - master

 test_remailer:
  stage: test
  image: $RELEASE_IMAGE
  before_script:
    - apt update -yqq
    - apt install -yqq tox
  script:
    - tox
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -0,0 +1,36 @@
 CONTRIBUTING
 =============

 Thank you for your interest in `remailer`.

 Contributor license agreement
 ------------------------------

 By submitting code you agree to the p≡p foundation's [CLA].

  [CLA]: https://contribution.pep.foundation/contribute/

 Please direct questions regarding the CLA to [contribution@pep.foundation].

  [contribution@pep.foundation]: mailto:contribution@pep.foundation

 Security vulnerability disclosure
 ---------------------------------

 Please report suspected security vulnerabilities in private to the
 [maintainers](maintainers.md).
 Please do NOT create publicly viewable issues for suspected security
 vulnerabilities.

 Contribution Flow
 ------------------

 When contributing to remailer, your merge request is subject to review by maintainers.

 When you submit code to remailer, we really want it to get merged, but there will be times when it will not be merged.

 When maintainers are reading through a merge request they may request guidance from other maintainers. If merge request maintainers conclude that the code should not be merged, our reasons will be fully disclosed. If it has been decided that the code quality is not up to umschlagend’s standards, the merge request maintainer will refer the author to our docs and code style guides, and provide some guidance.

 Sometimes style guides will be followed but the code will lack structural integrity, or the maintainer will have reservations about the code’s overall quality. When there is a reservation the maintainer will inform the author and provide some guidance. The author may then choose to update the merge request. Once the merge request has been updated and reassigned to the maintainer, they will review the code again. Once the code has been resubmitted any number of times, the maintainer may choose to close the merge request with a summary of why it will not be merged, as well as some guidance. If the merge request is closed the maintainer will be open to discussion as to how to improve the code so it can be approved in the future.

 This file is based on https://docs.gitlab.com/ee/development/contributing/
--- a/+ 20
+++ b/+ 20
@ -0,0 +1,20 @@
 FROM registry.gitlab.com/juga0/peppythonadapter_git/sync-docker:latest

 MAINTAINER juga <juga at riseup dot net>

 COPY . .

 ENV DOMAIN=remailer.openpgp.example

 RUN apt update -yqq
 RUN echo "postfix postfix/main_mailer_type string 'Internet Site'" | debconf-set-selections
 RUN echo "postfix postfix/mailname string ${DOMAIN}" | debconf-set-selections
 RUN apt install -yqq postfix
 RUN scripts/configure_postfix.sh
 # XXX: take into account user for the path
 RUN python3 setup.py install

 # VOLUME /var/log
 EXPOSE 25000

 CMD ["/usr/sbin/postfix", "start"]
--- a/LICENSE.rst
+++ b/LICENSE.rst
@ -0,0 +1,732 @@
 GNU GENERAL PUBLIC LICENSE
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 ~~~~~~~~

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 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
 excuse you from the conditions of this License. If you cannot convey a
 covered work so as to satisfy simultaneously your obligations under this
 License and any other pertinent obligations, then as a consequence you
 may not convey it at all. For example, if you agree to terms that
 obligate you to collect a royalty for further conveying from those to
 whom you convey the Program, the only way you could satisfy both those
 terms and this License would be to refrain entirely from conveying the
 Program.

 13. Use with the GNU Affero General Public License.
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 Notwithstanding any other provision of this License, you have permission
 to link or combine any covered work with a work licensed under version 3
 of the GNU Affero General Public License into a single combined work,
 and to convey the resulting work. The terms of this License will
 continue to apply to the part which is the covered work, but the special
 requirements of the GNU Affero General Public License, section 13,
 concerning interaction through a network will apply to the combination
 as such.

 14. Revised Versions of this License.
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 The Free Software Foundation may publish revised and/or new versions of
 the GNU General Public License from time to time. Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.

 Each version is given a distinguishing version number. If the Program
 specifies that a certain numbered version of the GNU General Public
 License “or any later version” applies to it, you have the option of
 following the terms and conditions either of that numbered version or of
 any later version published by the Free Software Foundation. If the
 Program does not specify a version number of the GNU General Public
 License, you may choose any version ever published by the Free Software
 Foundation.

 If the Program specifies that a proxy can decide which future versions
 of the GNU General Public License can be used, that proxy’s public
 statement of acceptance of a version permanently authorizes you to
 choose that version for the Program.

 Later license versions may give you additional or different permissions.
 However, no additional obligations are imposed on any author or
 copyright holder as a result of your choosing to follow a later version.

 15. Disclaimer of Warranty.
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^

 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
 APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT
 WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF
 THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
 THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

 16. Limitation of Liability.
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
 CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
 ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
 NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES
 SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE
 WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN
 ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

 17. Interpretation of Sections 15 and 16.
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 If the disclaimer of warranty and limitation of liability provided above
 cannot be given local legal effect according to their terms, reviewing
 courts shall apply local law that most closely approximates an absolute
 waiver of all civil liability in connection with the Program, unless a
 warranty or assumption of liability accompanies a copy of the Program in
 return for a fee.

 END OF TERMS AND CONDITIONS

 How to Apply These Terms to Your New Programs
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these
 terms.

 To do so, attach the following notices to the program. It is safest to
 attach them to the start of each source file to most effectively state
 the exclusion of warranty; and each file should have at least the
 “copyright” line and a pointer to where the full notice is found.

 ::

       <one line to give the program's name and a brief idea of what it does.>
       Copyright (C) <year>  <name of author>

       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 <https://www.gnu.org/licenses/>.

 Also add information on how to contact you by electronic and paper mail.

 If the program does terminal interaction, make it output a short notice
 like this when it starts in an interactive mode:

 ::

       <program>  Copyright (C) <year>  <name of author>
       This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
       This is free software, and you are welcome to redistribute it
       under certain conditions; type `show c' for details.

 The hypothetical commands \`show w’ and \`show c’ should show the
 appropriate parts of the General Public License. Of course, your
 program’s commands might be different; for a GUI interface, you would
 use an “about box”.

 You should also get your employer (if you work as a programmer) or
 school, if any, to sign a “copyright disclaimer” for the program, if
 necessary. For more information on this, and how to apply and follow the
 GNU GPL, see https://www.gnu.org/licenses/.

 The GNU General Public License does not permit incorporating your
 program into proprietary programs. If your program is a subroutine
 library, you may consider it more useful to permit linking proprietary
 applications with the library. If this is what you want to do, use the
 GNU Lesser General Public License instead of this License. But first,
 please read https://www.gnu.org/licenses/why-not-lgpl.html.
--- a/MANIFEST.in
+++ b/MANIFEST.in
@ -0,0 +1,8 @@
 include *.md
 include *.rst
 include *.ini
 recursive-include data *
 recursive-include docs *
 prune docs/build
 recursive-include tests *
 recursive-exclude **/__pycache__ *
--- a/README.rst
+++ b/README.rst
@ -0,0 +1,19 @@
 remailer
 ========

 ``remailer`` remails Emails to `Cypherpunk anonymous
 remailer <https://en.wikipedia.org/wiki/Cypherpunk_anonymous_remailer>`__\ s.

 It is intented to run as Postfix pipe.

 `Contributing <CONTRIBUTING.md>`__

 License
 -------

 GPLv3

 Authors
 -------

 juga at riseup dot net
--- a/docs/Makefile
+++ b/docs/Makefile
@ -0,0 +1,19 @@
 # Minimal makefile for Sphinx documentation
 #

 # You can set these variables from the command line.
 SPHINXOPTS    =
 SPHINXBUILD   = sphinx-build
 SOURCEDIR     = source
 BUILDDIR      = build

 # Put it first so that "make" without argument is like "make help".
 help:
 	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

 .PHONY: help Makefile

 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 %: Makefile
 	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
--- a/docs/source/CONTRIBUTING.rst
+++ b/docs/source/CONTRIBUTING.rst
@ -0,0 +1 @@
 ../../CONTRIBUTING.rst
--- a/docs/source/README.rst
+++ b/docs/source/README.rst
@ -0,0 +1 @@
 ../../README.rst
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@ -0,0 +1,194 @@
 # -*- coding: utf-8 -*-
 #
 # Configuration file for the Sphinx documentation builder.
 #
 # This file does only contain a selection of the most common options. For a
 # full list see the documentation:
 # http://www.sphinx-doc.org/en/master/config

 # -- Path setup --------------------------------------------------------------

 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #
 # import os
 # import sys
 # sys.path.insert(0, os.path.abspath('.'))


 # -- Project information -----------------------------------------------------

 project = 'pEp Python Remailer'
 copyright = '2020, juga'
 author = 'juga'

 # The short X.Y version
 version = ''
 # The full version, including alpha/beta/rc tags
 release = ''


 # -- General configuration ---------------------------------------------------

 # If your documentation needs a minimal Sphinx version, state it here.
 #
 # needs_sphinx = '1.0'

 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
    'sphinx.ext.autodoc',
    'sphinx.ext.doctest',
    'sphinx.ext.intersphinx',
    'sphinx.ext.todo',
    'sphinx.ext.coverage',
    'sphinx.ext.mathjax',
    'sphinx.ext.viewcode',
    'sphinx.ext.githubpages',
 ]

 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']

 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
 #
 # source_suffix = ['.rst', '.md']
 source_suffix = '.rst'

 # The master toctree document.
 master_doc = 'index'

 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
 language = None

 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
 # This pattern also affects html_static_path and html_extra_path.
 exclude_patterns = []

 # The name of the Pygments (syntax highlighting) style to use.
 pygments_style = None


 # -- Options for HTML output -------------------------------------------------

 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
 html_theme = 'alabaster'

 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
 # documentation.
 #
 # html_theme_options = {}

 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ['_static']

 # Custom sidebar templates, must be a dictionary that maps document names
 # to template names.
 #
 # The default sidebars (for documents that don't match any pattern) are
 # defined by theme itself.  Builtin themes are using these templates by
 # default: ``['localtoc.html', 'relations.html', 'sourcelink.html',
 # 'searchbox.html']``.
 #
 # html_sidebars = {}


 # -- Options for HTMLHelp output ---------------------------------------------

 # Output file base name for HTML help builder.
 htmlhelp_basename = 'pEpPythonRemailerdoc'


 # -- Options for LaTeX output ------------------------------------------------

 latex_elements = {
    # The paper size ('letterpaper' or 'a4paper').
    #
    # 'papersize': 'letterpaper',

    # The font size ('10pt', '11pt' or '12pt').
    #
    # 'pointsize': '10pt',

    # Additional stuff for the LaTeX preamble.
    #
    # 'preamble': '',

    # Latex figure (float) alignment
    #
    # 'figure_align': 'htbp',
 }

 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
    (master_doc, 'pEpPythonRemailer.tex', 'pEp Python Remailer Documentation',
     'juga', 'manual'),
 ]


 # -- Options for manual page output ------------------------------------------

 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
    (master_doc, 'peppythonremailer', 'pEp Python Remailer Documentation',
     [author], 1)
 ]


 # -- Options for Texinfo output ----------------------------------------------

 # Grouping the document tree into Texinfo files. List of tuples
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
    (master_doc, 'pEpPythonRemailer', 'pEp Python Remailer Documentation',
     author, 'pEpPythonRemailer', 'One line description of project.',
     'Miscellaneous'),
 ]


 # -- Options for Epub output -------------------------------------------------

 # Bibliographic Dublin Core info.
 epub_title = project

 # The unique identifier of the text. This can be a ISBN number
 # or the project homepage.
 #
 # epub_identifier = ''

 # A unique identification for the text.
 #
 # epub_uid = ''

 # A list of files that should not be packed into the epub file.
 epub_exclude_files = ['search.html']


 # -- Extension configuration -------------------------------------------------

 # -- Options for intersphinx extension ---------------------------------------

 # Example configuration for intersphinx: refer to the Python standard library.
 intersphinx_mapping = {'https://docs.python.org/': None}

 # -- Options for todo extension ----------------------------------------------

 # If true, `todo` and `todoList` produce output, else they produce nothing.
 todo_include_todos = True
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@ -0,0 +1,23 @@
 .. pEp Python Remailer documentation master file, created by
   sphinx-quickstart on Thu Jan  2 15:06:10 2020.
   You can adapt this file completely to your liking, but it should at least
   contain the root `toctree` directive.

 Welcome to pEp Python Remailer's documentation!
 ===============================================

 .. toctree::
   :maxdepth: 2
   :caption: Contents:

   README
   CONTRIBUTING
   modules


 Indices and tables
 ==================

 * :ref:`genindex`
 * :ref:`modindex`
 * :ref:`search`
--- a/docs/source/modules.rst
+++ b/docs/source/modules.rst
@ -0,0 +1,7 @@
 remailer
 ========

 .. toctree::
   :maxdepth: 4

   remailer
--- a/docs/source/remailer.rst
+++ b/docs/source/remailer.rst
@ -0,0 +1,46 @@
 remailer package
 ================

 Submodules
 ----------

 remailer.cli module
 -------------------

 .. automodule:: remailer.cli
    :members:
    :undoc-members:
    :show-inheritance:

 remailer.constants module
 -------------------------

 .. automodule:: remailer.constants
    :members:
    :undoc-members:
    :show-inheritance:

 remailer.exceptions module
 --------------------------

 .. automodule:: remailer.exceptions
    :members:
    :undoc-members:
    :show-inheritance:

 remailer.lib module
 -------------------

 .. automodule:: remailer.lib
    :members:
    :undoc-members:
    :show-inheritance:


 Module contents
 ---------------

 .. automodule:: remailer
    :members:
    :undoc-members:
    :show-inheritance:
--- a/maintainers.rst
+++ b/maintainers.rst
@ -0,0 +1,8 @@
 Maintainers
 ===========

 Maintainers are authors or contributors that can merge code or
 documentation in the repository and release versions. The current
 maintainers are:

 juga at riseup dot net
--- a/remailer/init.py
+++ b/remailer/init.py
@ -0,0 +1 @@
 __version__ = '0.1.0'
--- a/remailer/cli.py
+++ b/remailer/cli.py
@ -0,0 +1,101 @@
 #! /usr/bin/env python3
 """remailer command line interface."""
 import argparse
 import logging
 import logging.config
 import os
 import sys

 from . import __version__, constants, exceptions, lib

 logging.config.dictConfig(constants.LOGGING)
 logger = logging.getLogger(__name__)
 # coloredlogs.install(level=logger.level)


 def create_parser():
    parser = argparse.ArgumentParser(
        description='Email Forwarder to Anoymous Remailers.')
    parser.add_argument('-d', '--debug',
                        help='Set logging level to debug',
                        action='store_true')
    parser.add_argument('--version', action='version',
                        help='version',
                        version='%(prog)s ' + __version__)
    parser.add_argument('-a', '--apphome',
                        help='This application home, where pEp db or'
                             ' GNUPGHOME live.')
    parser.add_argument('-e', '--email_path', type=argparse.FileType('r'),
                        help='Email file path to forward to remailers.')
    parser.add_argument('-g', '--gnupghome',
                        help='The directory to set GNUPGHOME to.')
    parser.add_argument('-k', '--keyring', type=argparse.FileType('r'),
                        help='Import keys from a keyring path')
    parser.add_argument('-f', '--myfpr',
                        help='Set this remailer OpenPGP fingerprint.')
    parser.add_argument('-n', '--mynameaddress',
                        help='Set this remailer name/address identity.')
    return parser


 def main():
    parser = create_parser()
    args = parser.parse_args()

    if args.debug:
        logger.setLevel(logging.DEBUG)
    logger.debug('Arguments: %s', args)

    if args.apphome:
        lib.set_env(args.apphome, True)
    else:
        lib.set_env()

    if args.gnupghome:
        os.environ['GNUPGHOME'] = args.gnupghome
        logger.debug('$GNUPGPHOME=%s', os.environ['GNUPGHOME'])

    if args.keyring:
        try:
            lib.import_keys(args.keyring.read())
        except (exceptions.PepKeyNotFound, Exception) as e:
            logger.error(e)
            sys.exit(1)
        sys.exit(0)

    # XXX: create a subcommand
    if args.myfpr:
        if not args.mynameaddress:
            logger.error("Please, provides also `mynameaddress` argument.")
            sys.exit(1)
        try:
            lib.set_my_identity(args.mynameaddress, args.myfpr)
        except (exceptions.NoEmailAddress, exceptions.PepKeyNotFound) as e:
            logger.error(e)
            sys.exit(1)
        sys.exit(0)

    if args.mynameaddress:
        try:
            lib.set_my_identity(args.mynameaddress)
        except exceptions.NoEmailAddress as e:
            logger.error(e)
            sys.exit(1)
        sys.exit(0)

    if args.email_path:
        fd = args.email_path
    else:
        fd = sys.stdin

    mail_str = fd.read()
    logger.debug('Received Email:\n%s', mail_str)
    try:
        lib.process_email(mail_str)
    except (exceptions.EmailNotDecrypted, exceptions.EmailNotTrusted) as e:
        logger.error(e)
        sys.exit(1)


 if __name__ == '__main__':
    main()
--- a/remailer/constants.py
+++ b/remailer/constants.py
@ -0,0 +1,49 @@
 """Constants."""


 # XXX: Create these first constants as part of the adapter
 OUTGOING_MSG = 1
 INCOMING_MSG = 2

 BASIC_EMAIL_RE = r'[^@]+@[^@]+\.[^@]+'

 # XXX: sendmail, smtp, directly remailer
 TRANSPORT = "sendmail"
 SENDMAIL = "/usr/sbin/sendmail"


 # Custom logging config
 LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'simple': {
            'format': '{levelname} {message}',
            'style': '{',
        },
        'color': {
            '()': 'colorlog.ColoredFormatter',
            'format': "%(log_color)s%(levelname)s:%(name)s:%(message)s",
            'log_colors': {
                'DEBUG':    'cyan',
                'INFO':     'green',
                'WARNING':  'yellow',
                'ERROR':    'red',
                'CRITICAL': 'red,bg_white',
            },
        }
    },
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
            'formatter': 'color'
        },
    },
    'loggers': {
        'remailer': {
            'level': 'DEBUG',
            'handlers': ['console'],
            'propagate': True,
        },
    }
 }
--- a/remailer/exceptions.py
+++ b/remailer/exceptions.py
@ -0,0 +1,36 @@

 """Exceptions."""


 class EfarException(Exception):
    pass


 class PepNoKeyImported(EfarException):
    def __init__(self):
        super().__init__('No key imported.')


 class PepKeyNotFound(EfarException):
    def __init__(self):
        super().__init__('No key found.')


 class EmailNotEncrypted(EfarException):
    def __init__(self):
        super().__init__('Email not encrypted.')


 class EmailNotDecrypted(EfarException):
    def __init__(self):
        super().__init__('Email not decrypted.')


 class EmailNotTrusted(EfarException):
    def __init__(self):
        super().__init__('Email not trusted.')


 class NoEmailAddress(EfarException):
    def __init__(self):
        super().__init__('No Email address.')
--- a/remailer/lib.py
+++ b/remailer/lib.py
@ -0,0 +1,108 @@
 """remailer library."""
 import email
 import getpass
 import logging
 import os
 import re
 import smtplib

 from . import constants, exceptions

 logger = logging.getLogger(__name__)


 def set_env(home=None, create_dir=False):
    """Set HOME environment variable to set where pEp database will live."""
    if not home:
        user = '~' + getpass.getuser()
        home = os.environ.get('HOME', os.path.expanduser(user))
    if create_dir:
        os.makedirs(home, mode=0o0700, exist_ok=True)
    os.environ["HOME"] = home
    logger.debug('$HOME=%s', os.environ['HOME'])
    os.environ["GNUPGHOME"] = os.path.join(home, '.gnupg')
    logger.debug(os.environ['GNUPGHOME'])


 def import_keys(keyring_data):
    try:
        import pEp
        pEp.import_key(keyring_data)
    except RuntimeError as e:
        logger.debug(e)
        # Because the key was already in the keyring?
        if str(e) == 'PEP_NO_KEY_IMPORTED':
            raise exceptions.PepNoKeyImported
        raise(e)


 def set_my_identity(name_addr, fpr=None):
    import pEp
    name, address = email.utils.parseaddr(name_addr)
    logger.debug("name: %s, address: %s", name, address)
    if not re.match(constants.BASIC_EMAIL_RE, address):
        raise exceptions.NoEmailAddress
    if fpr:
        me = pEp.Identity(address, name, name_addr, fpr, 0, '')
        me.username = name
        try:
            pEp.set_own_key(me, fpr)
        except RuntimeError as e:
            if str(e) == 'PEP_KEY_NOT_FOUND':
                raise exceptions.PepKeyNotFound
            raise(e)
        logger.info("Set my own identity to: %s, %s", me, fpr)
    else:
        me = pEp.Identity(address, name, name_addr, '', 0, '')
        me.username = name
        pEp.myself(me)
        logger.info("Set my own identity to: %s", me)


 def decrypt_email(email_str):
    """Decrypt an incoming Email and forward it to the next hop.

    There's not need to check that the recipient of the Email is this
    remailer, if it can be decrypted, it'll be forwarded.

    The decrypted Email, the one to forward, won't probably have this
    remailer as sender and does not need to.

    :param str email_str: incoming Email
    :returns email.message.Message: the Email to forward
    """
    import pEp

    # XXX: This returns ValueError
    # msg = pEp.incoming_message(email_str)
    msg = pEp.Message(email_str)
    # Set direction
    msg.dir = constants.INCOMING_MSG
    # XXX: Why doesn't detect is encrypted?
    # if msg.enc_format == 0:
    dec_msg, key_list, rating, _r = msg.decrypt()
    # XXX: r is always 0?
    if not key_list:
        raise exceptions.EmailNotDecrypted
    # XXX: Add constants to peppythonadapter
    # XXX: is it yellow >= 0?
    if pEp.color(rating) < 0:
        raise exceptions.EmailNotTrusted
    email_to_send = email.message_from_string(dec_msg.longmsg)
    logger.info("Next hop: %s", email_to_send['To'])
    return email_to_send


 def send_email(mail):
    s = smtplib.SMTP('localhost')
    s.send_message(mail)
    s.quit()


 def process_email(email_str):
    logger.debug("$HOME=%s", os.environ["HOME"])
    gnupg_home = os.environ.get('GNUPGHOME', None)
    if gnupg_home:
        logger.debug("$GNUPGHOME=%s", os.environ["GNUPGHOME"])
    dec_mail = decrypt_email(email_str)
    send_email(dec_mail)
--- a/scripts/configure_postfix.sh
+++ b/scripts/configure_postfix.sh
@ -0,0 +1,26 @@
 #!/bin/bash

 set -x

 # export DOMAIN=$1
 # Configure a local domain
 # XXX: replace lines instead of adding
 echo '127.0.0.1    '$DOMAIN >> /etc/hosts
 echo '::1          '$DOMAIN >> /etc/hosts

 cat <<EOF >> /etc/postfix/master.cf
 remailer   unix  -       n       n       -       -       pipe
  flags=FR  user=user argv=/usr/local/bin/remailer

 EOF

 echo $DOMAIN'        remailer:' >> /etc/postfix/transport
 echo '@'$DOMAIN'         pep@'$DOMAIN >> /etc/postfix/virtual

 echo "transport_maps = hash:/etc/postfix/transport" >> /etc/postfix/main.cf
 echo "virtual_alias_maps = hash:/etc/postfix/virtual" >> /etc/postfix/main.cf
 echo "smtp_host_lookup = dns, native" >> /etc/postfix/main.cf

 postmap /etc/postfix/transport
 postmap /etc/postfix/virtual
 service postfix restart
--- a/setup.cfg
+++ b/setup.cfg
@ -0,0 +1,3 @@
 [tool:pytest]
 log_cli=true
 log_cli_level=DEBUG
--- a/setup.py
+++ b/setup.py
@ -0,0 +1,61 @@
 #!/usr/bin/env python3
 import os.path
 # Always prefer setuptools over distutils
 from setuptools import setup, find_packages


 here = os.path.abspath(os.path.dirname(__file__))


 def version():
    with open(os.path.join(here, "remailer", "__init__.py")) as fp:
        for line in fp:
            if "__version__" in line.strip():
                version = line.split("=", 1)[1].strip().strip("'")
                return version


 setup(
    name='remailer',
    version=version(),
    description='pEp Python Remailer',
    long_description=open("README.rst").read(),
    long_description_content_type="text/x-rst",
    author='juga',
    author_email='juga@riseup.net',
    license='GPLv3',
    url="https://gitea.pep.foundation/juga/pEpPythonRemailer.git",
    classifiers=[
        'Development Status :: 4 - Beta',
        "Environment :: Console",
        'Intended Audience :: Developers',
        'Intended Audience :: System Administrators',
        'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
        'Natural Language :: English',
        'Operating System :: POSIX :: Linux',
        'Programming Language :: Python :: 3.6',
        'Programming Language :: Python :: 3.7',
        'Programming Language :: Python :: 3.8',
        'Programming Language :: Python :: 3.9',
        'Topic :: Communications :: Email',
        'Topic :: Security :: Cryptography',
        'Topic :: System :: Networking',
    ],
    packages=find_packages(),
    include_package_data=True,
    keywords='email pEp OpenPGP remailer mixmaster',
    python_requires='>=3.7',
    entry_points={
        'console_scripts': [
            'remailer = remailer.cli:main',
        ]
    },
    install_requires=[
        'pEp>=2.0',
        'colorlog>=4.0'
    ],
    extras_require={
        'test': ['flake8', 'tox', 'pytest', 'coverage'],
        'doc': ['sphinx', 'pylint'],
    },
 )
--- a/tests/init.py
+++ b/tests/init.py
--- a/tests/conftest.py
+++ b/tests/conftest.py
@ -0,0 +1,77 @@
 """pytest configuration for the unit tests."""
 import pytest

 from remailer import lib


@pytest.fixture()
 def datadir(request):
    """Get, read, open test files from the tests "data" directory."""
    class D:
        def __init__(self, basepath):
            self.basepath = basepath

        def open(self, name, mode="r"):
            return self.basepath.join(name).open(mode)

        def join(self, name):
            return self.basepath.join(name).strpath

        def read(self, name):
            with self.open(name, "r") as f:
                return f.read()

        def readlines(self, name):
            with self.open(name, "r") as f:
                return f.readlines()
    return D(request.fspath.dirpath("data"))


@pytest.fixture(scope='function')
 def tmpdir(tmpdir_factory, request):
    """Create a tmp dir for the tests."""
    base = str(hash(request.node.nodeid))[:3]
    bn = tmpdir_factory.mktemp(base)
    return bn


@pytest.fixture()
 def alice_sec_key_data(datadir):
    key_data = datadir.read('alice@openpgp.example.sec.asc')
    return key_data


@pytest.fixture()
 def bob_sec_key_data(datadir):
    key_data = datadir.read('bob@openpgp.example.sec.asc')
    return key_data


@pytest.fixture()
 def email_signed_encrypted_from_bob_to_carol(datadir):
    email = datadir.read('signed_encrypted_from_bob_to_carol.eml')
    return email


@pytest.fixture()
 def email_signed_encrypted_from_alice_to_bob(datadir):
    email = datadir.read('signed_encrypted_from_alice_to_bob.eml')
    return email


@pytest.fixture()
 def email_from_bob_to_carol(datadir):
    email = datadir.read('plain_from_bob_to_carol.eml')
    return email


@pytest.fixture(scope='function')
 def set_env(tmpdir):
    lib.set_env(str(tmpdir))


@pytest.fixture(scope='function')
 def import_keys(set_env, bob_sec_key_data, alice_sec_key_data):
    import pEp
    pEp.import_key(alice_sec_key_data)
    pEp.import_key(bob_sec_key_data)
--- a/tests/constants.py
+++ b/tests/constants.py
@ -0,0 +1,15 @@
 """Constants for unit tests."""


 ANGLE_ADDR = "<{}>"
 NAME_ADDR = "{} {}"

 BOB_NAME = "Bob Babagge"
 BOB_ADDRESS = "bob@openpgp.example"
 BOB_FP = "D1A66E1A23B182C9980F788CFBFCC82A015E7330"
 BOB_NAME_ADDR = NAME_ADDR.format(BOB_NAME, ANGLE_ADDR.format(BOB_ADDRESS))

 CAROL_NAME = "Carol Hopper"
 CAROL_ADDRESS = "carol@openpgp.example"
 CAROL_NAME_ADDR = NAME_ADDR.format(CAROL_NAME,
                                   ANGLE_ADDR.format(CAROL_ADDRESS))
--- a/tests/data/README.md
+++ b/tests/data/README.md
@ -0,0 +1,2 @@
 The keys comes from:
 https://datatracker.ietf.org/doc/draft-bre-openpgp-samples/
--- a/tests/data/alice@openpgp.example.sec.asc
+++ b/tests/data/alice@openpgp.example.sec.asc
@ -0,0 +1,16 @@
 -----BEGIN PGP PRIVATE KEY BLOCK-----
 Comment: Alice's OpenPGP Transferable Secret Key

 lFgEXEcE6RYJKwYBBAHaRw8BAQdArjWwk3FAqyiFbFBKT4TzXcVBqPTB3gmzlC/U
 b7O1u10AAP9XBeW6lzGOLx7zHH9AsUDUTb2pggYGMzd0P3ulJ2AfvQ4RtCZBbGlj
 ZSBMb3ZlbGFjZSA8YWxpY2VAb3BlbnBncC5leGFtcGxlPoiQBBMWCAA4AhsDBQsJ
 CAcCBhUKCQgLAgQWAgMBAh4BAheAFiEE64W7X6M6deFelE5j8jFVDE9H444FAl2l
 nzoACgkQ8jFVDE9H447pKwD6A5xwUqIDprBzrHfahrImaYEZzncqb25vkLV2arYf
 a78A/R3AwtLQvjxwLDuzk4dUtUwvUYibL2sAHwj2kGaHnfICnF0EXEcE6RIKKwYB
 BAGXVQEFAQEHQEL/BiGtq0k84Km1wqQw2DIikVYrQrMttN8d7BPfnr4iAwEIBwAA
 /3/xFPG6U17rhTuq+07gmEvaFYKfxRB6sgAYiW6TMTpQEK6IeAQYFggAIBYhBOuF
 u1+jOnXhXpROY/IxVQxPR+OOBQJcRwTpAhsMAAoJEPIxVQxPR+OOWdABAMUdSzpM
 hzGs1O0RkWNQWbUzQ8nUOeD9wNbjE3zR+yfRAQDbYqvtWQKN4AQLTxVJN5X5AWyb
 Pnn+We1aTBhaGa86AQ==
 =n8OM
 -----END PGP PRIVATE KEY BLOCK-----
--- a/tests/data/bob@openpgp.example.sec.asc
+++ b/tests/data/bob@openpgp.example.sec.asc
@ -0,0 +1,82 @@
 -----BEGIN PGP PRIVATE KEY BLOCK-----
 Comment: Bob's OpenPGP Transferable Secret Key

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 /seOXpgecTdOcVttfzC8ycIKrt3aQTiwOG/ctaR4Bk/t6ayNFfdUNxHWk4WCKzdz
 /56fW2O0F23qIRd8UUJp5IIlN4RDdRCtdhVQIAuzvp2oVy/LaS2kxQoKvph/5pQ/
 5whqsyroEWDJoSV0yOb25B/iwk/pLUFoyhDG9bj0kIzDxrEqW+7Ba8nocQlecMF3
 X5KMN5kp2zraLv9dlBBpWW43XktjcCZgMy20SouraVma8Je/ECwUWYUiAZxLIlMv
 9CurEOtxUw6N3RdOtLmYZS9uEnn5y1UkF88o8Nku890uk6BrewFzJyLAx5wRZ4F0
 qV/yq36UWQ0JB/AUGhHVPdFf6pl6eaxBwT5GXvbBUibtf8YI2og5RsgTWtXfU7eb
 SGXrl5ZMpbA6mbfhd0R8aPxWfmDWiIOhBufhMCvUHh1sApMKVZnvIff9/0Dca3wb
 vLIwa3T4CyshfT0AEQEAAQAL/RZqbJW2IqQDCnJi4Ozm++gPqBPiX1RhTWSjwxfM
 cJKUZfzLj414rMKm6Jh1cwwGY9jekROhB9WmwaaKT8HtcIgrZNAlYzANGRCM4TLK
 3VskxfSwKKna8l+s+mZglqbAjUg3wmFuf9Tj2xcUZYmyRm1DEmcN2ZzpvRtHgX7z
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