python-support-infra/stacks/site-support/scripts__security_txt/gen.py

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#!/usr/bin/python3
# Copyright (C) 2023 Sofus Albert Høgsbro Rose
#
# 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/>.
"""This script templates and signs a `security.txt` file.
Note that:
- This script presumes that `gpg` is installed.
- This script presumes that the private key of the configued fingerprint is available to use with `gpg --clearsign`.
- The keyserver is hardcoded to `keys.openpgp.org`.
To use, first adjust the following configuration block:
```python
MAILTO =
EXPIRY =
MAILTO_PGP_FINGERPRINT =
DEPLOY_DOMAIN =
```
Then, just run `./gen.py`.
**REMEMBER TO REVIEW THE GENERATED FILE BEFORE DEPLOYMENT**.
"""
import os
import sys
if not all([
sys.version_info.major == 3,
sys.version_info.minor in [9, 10, 11, 12, 13],
]):
sys.exit(1)
from pathlib import Path
import platform
import shutil
import subprocess
import contextlib
from datetime import datetime
from string import Template
####################
# - Configuration
####################
MAILTO = "s174509@dtu.dk"
EXPIRY = datetime(year = 2024, month = 8, day = 1).isoformat()
MAILTO_PGP_FINGERPRINT = "E3B345EFFF5B3994BC1D12603D01BE95F3EFFEB9"
DEPLOY_DOMAIN = "https://timesigned.com"
####################
# - Constants
####################
SCRIPT_PATH = Path(__file__).resolve().parent
PATH_SECURITY_TXT = (
SCRIPT_PATH.parent / "configs" / "site-support__security.txt"
)
####################
# - Utilities
####################
@contextlib.contextmanager
def cd_script_dir() -> None:
cwd_orig = Path.cwd()
os.chdir(SCRIPT_PATH)
try:
yield
finally:
os.chdir(cwd_orig)
####################
# - Actions
####################
def sign_security_txt() -> None:
if PATH_SECURITY_TXT.is_file():
PATH_SECURITY_TXT.unlink()
## Avoid platform-defined (os.rename()) shutil.move() to existing file.
with cd_script_dir():
# Template
with open("security.txt.unsigned.tmpl", "r") as f0:
with open("security.txt.unsigned", "w") as f1:
f1.write(
Template(
f0.read()
).substitute(
MAILTO = MAILTO,
EXPIRY = EXPIRY,
MAILTO_PGP_FINGERPRINT = MAILTO_PGP_FINGERPRINT,
DEPLOY_DOMAIN = DEPLOY_DOMAIN,
)
)
# Sign + Delete Templated
subprocess.run([
"gpg",
"--local-user", "E3B345EFFF5B3994BC1D12603D01BE95F3EFFEB9",
"--clearsign", "security.txt.unsigned",
])
Path("security.txt.unsigned").unlink()
# Move
shutil.move(
"security.txt.unsigned.asc",
PATH_SECURITY_TXT,
)
####################
# - Main
####################
if __name__ == "__main__":
sign_security_txt()
# `cat` the Installed File
with open(PATH_SECURITY_TXT, "r") as f:
print(f.read(), end = "")