Add jeongseok-meta #38

	name: Access control

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	build:
	name: Validate usernames
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v4
	with:
	python-version: 3.x
	- name: Install requests
	run: pip install requests
	- name: Validate
	shell: python
	run: \|
	import json
	import requests
	import sys
	from pathlib import Path

	def check_login_id(login, ident):
	r = requests.get(f"https://api.github.com/users/{login}", headers={
	"Accept": "application/vnd.github.v3+json",
	"Authorization": f"token ${{ secrets.GITHUB_TOKEN }}",
	})
	r.raise_for_status()
	data = r.json()
	if data["id"] != ident:
	raise ValueError(
	f"Supplied identified {ident} for user {login} "
	f"doesn't match Github API: {data['id']}"
	)
	exceptions = []
	for path in Path("access").glob("*.json"):
	print("Processing", path)
	access_data = json.loads(path.read_text())
	for user in access_data["users"]:
	login = user.get("github")
	if not login:
	raise ValueError(f"Entry {user} is missing `github` key.")
	ident = user.get("id")
	if not ident:
	raise ValueError(f"Entry {user} is missing `id` key.")
	try:
	check_login_id(login, ident)
	except ValueError as exc:
	print("!!!", exc.__class__.__name__, "->", exc)
	exceptions.append(exc)
	if exceptions:
	sys.exit(1)

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