initial

.gitignore

@@ -0,0 +1,104 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Vladislav Yarmak
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Makefile

@@ -0,0 +1,18 @@
+PYTHON = python3
+RM = rm
+
+PRJ_DIR = $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
+VENV ?= $(PRJ_DIR)venv
+
+install: $(VENV) setup.py
+	$(VENV)/bin/pip install -U .
+
+$(VENV):
+	$(PYTHON) -m venv $(VENV)
+
+uninstall: $(VENV)
+	$(VENV)/bin/pip uninstall -y clitoolboilerplate
+
+clean:
+	$(RM) -rf $(VENV)
+

README.md

@@ -0,0 +1,71 @@
+python-cli-tool-boilerplate
+===========================
+
+Boilerplate of python3 package which provides command line tool capable to:
+
+* be installed in venv
+* be installed using `setup.py`
+* be runned directly from source directory if environment dependencies already satisfied
+
+In order to convert this boilerplate to real project you have to:
+
+1. Edit setup.py: version, name, dependencies
+2. Rename `clitoolboilerplate` module directory
+3. Adjust imports
+4. (Optional) Add dependencies to `requirements.txt`
+
+
+## Installation
+
+### Method 1. System-wide install
+
+Run in project directory:
+
+```bash
+python3 -m pip install .
+```
+
+Package scripts shall be available in standard executable locations upon completion.
+
+### Method 2. Running from project directory
+
+Installing dependencies:
+
+
+```bash
+python3 -m pip install -r requirements.txt
+```
+
+Now script can be run right from source directory.
+
+#### Пользовательская установка pip
+
+Both previous methods can be run with `--user` option of `pip` installer. In this case superuser privileges are not required and package shall be installed to user home directory. So, for first method script executabled will appear in `~/.local/bin`.
+
+### Method 3. Install into virtualenv
+
+See "Building virtualenv"
+
+
+## Building virtualenv
+
+Run `make` in project directory in order to build virtualenv. As result of it, new directory `venv` shall appear. `venv` contains interpreter and all required dependencies, i.e. encloses package with depencencies in separate environment. It is possible to specify alternative path where virtualenv directory shall be placed. Specify VENV variable for `make` command. Example:
+
+```bash
+make VENV=~/myapp-venv
+```
+
+Such virtual environment can be moved to another machine of similar type (as far python interpreter is compatible with new environment). If virtualenv is placed into same location on new machine, application can be runned this way:
+
+```bash
+venv/bin/cli-tool
+```
+
+Otherwise, some hacks required. First option - explicitly call virtualenv interpreter:
+
+```bash
+venv/bin/python venv/bin/cli-tool
+```
+
+Second option - specify new path in shebang of scripts installed in virtualenv. It is recommended to build virtualenv at same location which app shall occupy on target system.
+

cli-tool

@@ -0,0 +1,28 @@
+#!/usr/bin/env python3
+
+import sys
+import argparse
+from clitoolboilerplate.utils import *
+from clitoolboilerplate.enums import *
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+    parser.add_argument("-v", "--verbosity",
+                        help="logging verbosity",
+                        type=LogLevel.__getitem__,
+                        choices=list(LogLevel),
+                        default=LogLevel.warn)
+
+    return parser.parse_args()
+
+
+def main():
+    args = parse_args()
+    mainLogger = setup_logger('MAIN', args.verbosity)
+    mainLogger.info("Hello World!")
+
+
+if __name__ == '__main__':
+    main()

clitoolboilerplate/enums.py

@@ -0,0 +1,29 @@
+import enum
+import logging
+
+
+@enum.unique
+class Protocol(enum.Enum):
+    tcp = 1
+    udp = 2
+
+    def __str__(self):
+        return self.name
+
+    def __contains__(self, e):
+        return e in self.__members__
+
+
+class LogLevel(enum.IntEnum):
+    debug = logging.DEBUG
+    info = logging.INFO
+    warn = logging.WARN
+    error = logging.ERROR
+    fatal = logging.FATAL
+    crit = logging.CRITICAL
+
+    def __str__(self):
+        return self.name
+
+    def __contains__(self, e):
+        return e in self.__members__

clitoolboilerplate/utils.py

@@ -0,0 +1,40 @@
+import logging
+
+
+def setup_logger(name, verbosity):
+    logger = logging.getLogger(name)
+    logger.setLevel(verbosity)
+    handler = logging.StreamHandler()
+    handler.setLevel(verbosity)
+    handler.setFormatter(logging.Formatter('%(asctime)s '
+                                           '%(levelname)-8s '
+                                           '%(name)s: %(message)s',
+                                           '%Y-%m-%d %H:%M:%S'))
+    logger.addHandler(handler)
+    return logger
+
+
+def check_port(value):
+    ivalue = int(value)
+    if not (0 < ivalue < 65536):
+        raise argparse.ArgumentTypeError(
+            "%s is not a valid port number" % value)
+    return ivalue
+
+
+def check_positive_float(value):
+    fvalue = float(value)
+    if fvalue <= 0:
+        raise argparse.ArgumentTypeError(
+            "%s is not a valid value" % value)
+    return fvalue
+
+
+def enable_uvloop():
+    try:
+        import uvloop
+        asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
+    except:
+        return False
+    else:
+        return True

setup.py

@@ -0,0 +1,20 @@
+from setuptools import setup
+
+setup(name='postfix_mta_sts_resolver',
+      version='0.1',
+      description='Daemon which provides TLS client policy for Postfix via socketmap, according to domain MTA-STS policy',
+      url='https://github.com/Snawoot/postfix-mta-sts-resolver',
+      author='Vladislav Yarmak',
+      author_email='vladislav-ex-src@vm-0.com',
+      license='MIT',
+      packages=['postfix_mta_sts_resolver'],
+      setup_requires=[
+          'wheel',
+      ],
+      install_requires=[
+      ],
+      scripts=[
+          'mta-sts-daemon',
+          'mta-sts-query',
+      ],
+      zip_safe=True)