Initial commit

.gitignore

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+
+# Created by https://www.toptal.com/developers/gitignore/api/python
+# Edit at https://www.toptal.com/developers/gitignore?templates=python
+
+### Python ###
+# 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/
+share/python-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/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# 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/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintainted in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+# End of https://www.toptal.com/developers/gitignore/api/python

nix_channel_server/app.py

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+#!/usr/bin/env python3
+"""Selfprivacy nix channel server."""
+import os
+import requests
+
+from flask import Flask, request, jsonify, redirect
+from flask_restful import Api, Resource, reqparse
+
+# Read the current nixos channel URL from file channel_url.txt
+current_channel = open("channel_url.txt", "r").read()
+
+class Channel(Resource):
+    def get(self):
+        """GET request returns the 301 redirect to the
+        current validated NixOS channel 
+        """
+        return redirect(current_channel, code=301)
+
+    def post(self):
+        """POST a new channel, save it to file and update
+        current variable"""
+        parser = reqparse.RequestParser()
+        parser.add_argument('channel', type=str, required=True,
+                            help="Channel URL is required")
+        args = parser.parse_args()
+        channel = args['channel']
+        # Save the new channel to file
+        with open("channel_url.txt", "w") as f:
+            f.write(channel)
+        # Update the current channel
+        current_channel = channel
+        return jsonify({"message": "Channel updated"})
+
+class GetNewChannel(Resource):
+    def post(self):
+        r = requests.get("https://nixos.org/channels/nixos-21.05")
+        channel = r.url
+        # Save the new channel to file
+        with open("channel_url.txt", "w") as f:
+            f.write(channel)
+        # Update the current channel
+        current_channel = channel
+        return jsonify({"message": "Channel updated", "channel": channel})
+
+def create_app():
+    app = Flask(__name__)
+    api = Api(app)
+
+    app.config['AUTH_KEY'] = os.environ.get('AUTH_KEY') or 'secret!'
+    @app.before_request
+    def before_request():
+        # If request is not GET, check if the auth key is correct
+        if request.method != 'GET':
+            if request.headers.get('Authorization') != app.config['AUTH_KEY']:
+                return jsonify({"message": "Invalid auth key"}), 401
+
+    api.add_resource(Channel, '/nixos-selfpricacy')
+    return app
+
+if __name__ == '__main__':
+    app = create_app()
+    app.run(debug=False)

nix_channel_server/channel_url.txt

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+https://releases.nixos.org/nixos/21.05/nixos-21.05.4719.0fd9ee1aa36

shell.nix

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+{ pkgs ? import <nixpkgs> {} }:
+let
+  sp-python = pkgs.python39.withPackages (p: with p; [
+    flask 
+    flask-restful 
+    setuptools
+    portalocker
+    pytest 
+    pytest-mock 
+    pytest-datadir
+    coverage
+    requests
+  ]);
+in
+pkgs.mkShell {
+  buildInputs = [
+    sp-python
+    pkgs.black
+  ];
+  shellHook = ''
+    PYTHONPATH=${sp-python}/${sp-python.sitePackages}
+    # maybe set more env-vars
+  '';
+}