296 lines
14 KiB
Python
296 lines
14 KiB
Python
# -*- coding: utf-8 -*-
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import json
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import os
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from werkzeug.exceptions import BadRequest, HTTPException, NotFound
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from werkzeug.routing import Map, Rule
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from werkzeug.utils import redirect
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from werkzeug.wrappers import Request, Response
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from werkzeug.wsgi import ClosingIterator
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from jinja2 import Environment, FileSystemLoader
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from . import VMMgr, CERT_PUB_FILE
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from . import tools
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from .validator import InvalidValueException
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from .wsgilang import WSGILang
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from .wsgisession import WSGISession
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SESSION_KEY = os.urandom(26)
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class WSGIApp(object):
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def __init__(self):
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self.vmmgr = VMMgr()
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self.jinja_env = Environment(loader=FileSystemLoader('/srv/vm/templates'), autoescape=True, lstrip_blocks=True, trim_blocks=True)
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self.jinja_env.globals.update(is_app_visible=self.is_app_visible)
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self.jinja_env.globals.update(is_service_autostarted=tools.is_service_autostarted)
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self.jinja_env.globals.update(is_service_started=tools.is_service_started)
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def __call__(self, environ, start_response):
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return self.wsgi_app(environ, start_response)
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def wsgi_app(self, environ, start_response):
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request = Request(environ)
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# Reload VM Manager config in case it has changed
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self.vmmgr.conf.load()
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# Enhance request
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request.session = WSGISession(request.cookies, SESSION_KEY)
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request.session.lang = WSGILang()
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# Dispatch request
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response = self.dispatch_request(request)
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# Save session if changed
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request.session.save(response)
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return response(environ, start_response)
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def dispatch_request(self, request):
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adapter = self.get_url_map(request.session).bind_to_environ(request.environ)
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try:
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endpoint, values = adapter.match()
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return getattr(self, endpoint)(request, **values)
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except NotFound as e:
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# Return custom 404 page
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response = self.render_template('404.html', request)
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response.status_code = 404
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return response
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except HTTPException as e:
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return e
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def get_url_map(self, session):
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rules = [
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Rule('/', endpoint='portal_view'),
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Rule('/login', methods=['GET'], endpoint='login_view'),
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Rule('/login', methods=['POST'], endpoint='login_action'),
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Rule('/logout', endpoint='logout_action')
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]
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if session['admin']:
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rules += [
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Rule('/setup-host', endpoint='setup_host_view'),
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Rule('/setup-apps', endpoint='setup_apps_view'),
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Rule('/update-host', endpoint='update_host_action'),
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Rule('/verify-dns', endpoint='verify_dns_action'),
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Rule('/verify-https', endpoint='verify_http_action', defaults={'proto': 'https'}),
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Rule('/verify-http', endpoint='verify_http_action', defaults={'proto': 'http'}),
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Rule('/update-cert', endpoint='update_cert_action'),
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Rule('/update-common', endpoint='update_common_action'),
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Rule('/update-app-visibility', endpoint='update_app_visibility_action'),
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Rule('/update-app-autostart', endpoint='update_app_autostart_action'),
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Rule('/start-app', endpoint='start_app_action'),
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Rule('/stop-app', endpoint='stop_app_action'),
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Rule('/update-password', endpoint='update_password_action'),
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Rule('/shutdown-vm', endpoint='shutdown_vm_action'),
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Rule('/reboot-vm', endpoint='reboot_vm_action'),
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]
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return Map(rules)
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def render_template(self, template_name, request, **context):
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# Enhance context
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context['conf'] = self.vmmgr.conf
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context['session'] = request.session
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# Render template
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t = self.jinja_env.get_template(template_name)
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return Response(t.render(context), mimetype='text/html')
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def render_json(self, data):
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return Response(json.dumps(data), mimetype='application/json')
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def login_view(self, request):
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return self.render_template('login.html', request)
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def login_action(self, request):
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password = request.form['password']
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if tools.adminpwd_verify(password, self.vmmgr.conf['host']['adminpwd']):
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request.session['admin'] = True
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return redirect('/')
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else:
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return self.render_template('login.html', request, message=request.session.lang.bad_password())
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def logout_action(self, request):
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request.session.reset()
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return redirect('/')
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def portal_view(self, request):
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# Default portal view. If this is the first run, perform first-run setup.
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if self.vmmgr.conf['host']['firstrun']:
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# Set user as admin
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request.session['admin'] = True
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# Disable and save first-run flag
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self.vmmgr.conf['host']['firstrun'] = False
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self.vmmgr.conf.save()
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# Redirect to host setup view
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return redirect('/setup-host')
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host = tools.compile_url(self.vmmgr.conf['host']['domain'], self.vmmgr.conf['host']['port'], None)
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if request.session['admin']:
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return self.render_template('portal-admin.html', request, host=host)
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return self.render_template('portal-user.html', request, host=host)
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def setup_host_view(self, request):
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# Host setup view.
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ex_ipv4 = tools.get_external_ipv4()
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ex_ipv6 = tools.get_external_ipv6()
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in_ipv4 = tools.get_local_ipv4()
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in_ipv6 = tools.get_local_ipv6()
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is_letsencrypt = os.path.exists('/etc/periodic/daily/acme-sh')
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cert_info = tools.get_cert_info(CERT_PUB_FILE)
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return self.render_template('setup-host.html', request, ex_ipv4=ex_ipv4, ex_ipv6=ex_ipv6, in_ipv4=in_ipv4, in_ipv6=in_ipv6, is_letsencrypt=is_letsencrypt, cert_info=cert_info)
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def setup_apps_view(self, request):
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# Application manager view.
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return self.render_template('setup-apps.html', request)
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def update_host_action(self, request):
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# Update domain and port, then restart nginx
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try:
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domain = request.form['domain']
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port = request.form['port']
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self.vmmgr.update_host(domain, port, False)
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server_name = request.environ['HTTP_X_FORWARDED_SERVER_NAME']
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url = '{}/setup-host'.format(tools.compile_url(server_name, port))
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response = self.render_json({'ok': request.session.lang.host_updated(url, url)})
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response.call_on_close(tools.restart_nginx)
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return response
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except BadRequest:
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return self.render_json({'error': request.session.lang.malformed_request()})
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except InvalidValueException as e:
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if e.args[0] == 'domain':
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return self.render_json({'error': request.session.lang.invalid_domain(domain)})
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if e.args[0] == 'port':
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return self.render_json({'error': request.session.lang.invalid_port(port)})
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def verify_dns_action(self, request):
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# Check if all FQDNs for all applications are resolvable and point to current external IP
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domains = [self.vmmgr.domain]+['{}.{}'.format(self.vmmgr.conf['apps'][app]['host'], self.vmmgr.domain) for app in self.vmmgr.conf['apps']]
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ipv4 = tools.get_external_ipv4()
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ipv6 = tools.get_external_ipv6()
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for domain in domains:
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try:
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a = tools.resolve_ip(domain, 'A')
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aaaa = tools.resolve_ip(domain, 'AAAA')
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if not a and not aaaa:
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return self.render_json({'error': request.session.lang.dns_record_does_not_exist(domain)})
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if a and a != ipv4:
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return self.render_json({'error': request.session.lang.dns_record_mismatch(domain, a, ipv4)})
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if aaaa and aaaa != ipv6:
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return self.render_json({'error': request.session.lang.dns_record_mismatch(domain, aaaa, ipv6)})
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except:
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return self.render_json({'error': request.session.lang.dns_timeout()})
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return self.render_json({'ok': request.session.lang.dns_records_ok()})
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def verify_http_action(self, request, **kwargs):
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# Check if all applications are accessible from the internet using 3rd party ping service
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proto = kwargs['proto']
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port = self.vmmgr.port if proto == 'https' else '80'
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domains = [self.vmmgr.domain]+['{}.{}'.format(self.vmmgr.conf['apps'][app]['host'], self.vmmgr.domain) for app in self.vmmgr.conf['apps']]
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for domain in domains:
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url = tools.compile_url(domain, port, proto)
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try:
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if not tools.ping_url(url):
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return self.render_json({'error': request.session.lang.http_host_not_reachable(url)})
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except:
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return self.render_json({'error': request.session.lang.http_timeout()})
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return self.render_json({'ok': request.session.lang.http_hosts_ok(port)})
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def update_cert_action(self, request):
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# Update certificate - either request via Let's Encrypt or manually upload files
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try:
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if request.form['method'] not in ['auto', 'manual']:
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raise BadRequest()
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if request.form['method'] == 'manual':
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if not request.files['public']:
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return self.render_json({'error': request.session.lang.cert_file_missing()})
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if not request.files['private']:
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return self.render_json({'error': request.session.lang.key_file_missing()})
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request.files['public'].save('/tmp/public.pem')
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request.files['private'].save('/tmp/private.pem')
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self.vmmgr.install_cert('/tmp/public.pem', '/tmp/private.pem')
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os.unlink('/tmp/public.pem')
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os.unlink('/tmp/private.pem')
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else:
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self.vmmgr.request_cert()
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except BadRequest:
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return self.render_json({'error': request.session.lang.malformed_request()})
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except:
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return self.render_json({'error': request.session.lang.cert_request_error()})
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url = tools.compile_url(self.vmmgr.domain, self.vmmgr.port)
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return self.render_json({'ok': request.session.lang.cert_installed(url, url)})
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def update_common_action(self, request):
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# Update common settings shared between apps - admin e-mail address, Google Maps API key
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try:
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self.vmmgr.update_common(request.form['email'], request.form['gmaps-api-key'])
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except BadRequest:
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return self.render_json({'error': request.session.lang.malformed_request()})
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return self.render_json({'ok': request.session.lang.common_updated()})
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def update_app_visibility_action(self, request):
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# Update application visibility on portal page
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try:
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if request.form['value'] == 'true':
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self.vmmgr.show_tiles(request.form['app'])
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else:
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self.vmmgr.hide_tiles(request.form['app'])
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except (BadRequest, InvalidValueException):
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return self.render_json({'error': request.session.lang.malformed_request()})
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return self.render_json({'ok': 'ok'})
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def update_app_autostart_action(self, request):
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# Update value determining if the app should be automatically started after VM boot
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try:
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if request.form['value'] == 'true':
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self.vmmgr.enable_autostart(request.form['app'])
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else:
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self.vmmgr.disable_autostart(request.form['app'])
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except (BadRequest, InvalidValueException):
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return self.render_json({'error': request.session.lang.malformed_request()})
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return self.render_json({'ok': 'ok'})
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def start_app_action(self, request):
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# Starts application along with its dependencies
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try:
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self.vmmgr.start_app(request.form['app'])
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except (BadRequest, InvalidValueException):
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return self.render_json({'error': request.session.lang.malformed_request()})
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except:
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return self.render_json({'error': request.session.lang.stop_start_error()})
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return self.render_json({'ok': request.session.lang.app_started()})
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def stop_app_action(self, request):
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# Stops application along with its dependencies
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try:
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self.vmmgr.stop_app(request.form['app'])
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except (BadRequest, InvalidValueException):
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return self.render_json({'error': request.session.lang.malformed_request()})
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except:
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return self.render_json({'error': request.session.lang.stop_start_error()})
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return self.render_json({'ok': request.session.lang.app_stopped()})
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def update_password_action(self, request):
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# Updates password for both HDD encryption (LUKS-on-LVM) and web interface admin account
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try:
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if request.form['newpassword'] != request.form['newpassword2']:
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return self.render_json({'error': request.session.lang.password_mismatch()})
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if request.form['newpassword'] == '':
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return self.render_json({'error': request.session.lang.password_empty()})
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# No need to explicitly validate old password, update_luks_password will raise exception if it's wrong
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self.vmmgr.update_password(request.form['oldpassword'], request.form['newpassword'])
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except:
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return self.render_json({'error': request.session.lang.bad_password()})
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return self.render_json({'ok': request.session.lang.password_changed()})
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def reboot_vm_action(self, request):
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# Reboots VM
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response = self.render_json({'ok': request.session.lang.reboot_initiated()})
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response.call_on_close(tools.reboot_vm)
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return response
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def shutdown_vm_action(self, request):
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# Shuts down VM
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response = self.render_json({'ok': request.session.lang.shutdown_initiated()})
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response.call_on_close(tools.shutdown_vm)
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return response
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def is_app_visible(self, app):
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return app in self.vmmgr.conf['apps'] and self.vmmgr.conf['apps'][app]['visible'] and tools.is_service_started(app)
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class InvalidRecordException(Exception):
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pass
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