103 lines
3.5 KiB
Python
103 lines
3.5 KiB
Python
import datetime
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import ipaddress
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import json
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import re
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import subprocess
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import flask
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import flask_login
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from . import system
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from . import db
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blueprint = flask.Blueprint('vpn', __name__, url_prefix='/vpn')
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wgkey_regex = re.compile(r'^[A-Za-z0-9/+=]{44}$')
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@blueprint.route('/')
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@flask_login.login_required
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def index():
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return flask.render_template('vpn/index.html')
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@blueprint.route('/list')
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@flask_login.login_required
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def list():
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try:
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user = flask_login.current_user.get_id()
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return flask.jsonify({k: v for k, v in db.load('wireguard').items() if v.get('user') == user})
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except Exception as e:
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return flask.Response(f'failed: {e}', status=500, mimetype='text/plain')
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@blueprint.route('/new', methods=('POST',))
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@flask_login.login_required
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def new():
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pubkey = flask.request.json.get('pubkey', '')
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if not re.match(wgkey_regex, pubkey):
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return flask.Response('invalid key', status=400, mimetype='text/plain')
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try:
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settings = db.load('settings')
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server_pubkey = subprocess.run([f'wg pubkey'], input=settings.get('wg_key'),
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text=True, capture_output=True, shell=True).stdout.strip()
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with db.locked('wireguard'):
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# Find a free address for the new key.
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ips = db.read('wireguard')
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network = ipaddress.ip_network(settings.get('wg_net', '10.0.0.1/24'), strict=False)
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for ip in network.hosts():
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if str(ip) not in ips:
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break
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else:
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return flask.Response('no more available IP addresses', status=500, mimetype='text/plain')
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now = datetime.datetime.utcnow()
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comment = re.sub('[^\w ]', '', flask.request.json.get('comment', ''))
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ips[str(ip)] = {
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'key': pubkey,
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'time': now.timestamp(),
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'user': flask_login.current_user.get_id(),
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'comment': comment,
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}
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db.write('wireguard', ips)
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# Generate a new config archive for firewall nodes.
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system.run(system.save_config)
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# Template arguments.
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args = {
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'server': f'{settings.get("wg_endpoint")}',
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'port': f'{settings.get("wg_port", 51820)}',
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'server_key': server_pubkey,
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'pubkey': pubkey,
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'ip': str(ip),
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'timestamp': now,
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'comment': comment,
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'add_default': flask.request.json.get('add_default', False),
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'use_dns': flask.request.json.get('use_dns', True),
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}
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return flask.render_template('vpn/wg-fri.conf', **args)
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except Exception as e:
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return flask.Response(f'something went catastrophically wrong: {e}',
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status=400, mimetype='text/plain')
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@blueprint.route('/del', methods=('POST',))
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@flask_login.login_required
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def delete():
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pubkey = flask.request.json.get('pubkey', '')
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if not wgkey_regex.match(pubkey):
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return flask.Response('invalid key', status=400, mimetype='text/plain')
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try:
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with db.locked('wireguard'):
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user = flask_login.current_user.get_id()
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ips = {k: v for k, v in db.read('wireguard').items() if v.get('user') != user or v.get('key') != pubkey}
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db.write('wireguard', ips)
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system.run(system.save_config)
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return flask.Response(f'deleted key {pubkey}', status=200, mimetype='text/plain')
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except Exception as e:
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return flask.Response(f'something went catastrophically wrong: {e}',
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status=400, mimetype='text/plain')
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