mirror of
https://github.com/balena-os/balena-supervisor.git
synced 2024-12-28 01:28:52 +00:00
473 lines
12 KiB
TypeScript
473 lines
12 KiB
TypeScript
import _ = require('lodash');
|
|
import { expect } from 'chai';
|
|
|
|
import * as sinon from 'sinon';
|
|
|
|
import * as config from '~/src/config';
|
|
import * as firewall from '~/lib/firewall';
|
|
import * as logger from '~/src/logger';
|
|
import * as iptablesMock from '~/test-lib/mocked-iptables';
|
|
import * as dbFormat from '~/src/device-state/db-format';
|
|
|
|
import constants = require('~/lib/constants');
|
|
import { RuleAction, Rule } from '~/lib/iptables';
|
|
import { log } from '~/lib/supervisor-console';
|
|
|
|
describe('lib/firewall', function () {
|
|
let loggerSpy: sinon.SinonSpy;
|
|
let logSpy: sinon.SinonStub;
|
|
|
|
let apiEndpoint: string;
|
|
let listenPort: number;
|
|
|
|
before(async () => {
|
|
await config.initialized();
|
|
|
|
// spy the logs...
|
|
loggerSpy = sinon.spy(logger, 'logSystemMessage');
|
|
logSpy = log.error as sinon.SinonStub;
|
|
|
|
await firewall.initialised();
|
|
|
|
apiEndpoint = await config.get('apiEndpoint');
|
|
listenPort = await config.get('listenPort');
|
|
});
|
|
|
|
after(async () => {
|
|
loggerSpy.restore();
|
|
});
|
|
|
|
describe('Basic On/Off operation', () => {
|
|
it('should confirm the `changed` event is handled', async function () {
|
|
await iptablesMock.whilstMocked(async ({ hasAppliedRules }) => {
|
|
const changedSpy = sinon.spy();
|
|
config.on('change', changedSpy);
|
|
|
|
// set the firewall to be in off mode...
|
|
await config.set({ firewallMode: 'off' });
|
|
await hasAppliedRules;
|
|
|
|
// check it fired the events correctly...
|
|
expect(changedSpy.called).to.be.true;
|
|
expect(changedSpy.calledWith({ firewallMode: 'off' })).to.be.true;
|
|
});
|
|
});
|
|
|
|
it('should handle the HOST_FIREWALL_MODE configuration value: invalid', async function () {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule }) => {
|
|
// set the firewall to be in off mode...
|
|
await config.set({ firewallMode: 'invalid' });
|
|
await hasAppliedRules;
|
|
|
|
// expect that we jump to the firewall chain...
|
|
expectRule({
|
|
target: 'BALENA-FIREWALL',
|
|
chain: 'INPUT',
|
|
family: 4,
|
|
});
|
|
|
|
// expect to return...
|
|
expectRule({
|
|
chain: 'BALENA-FIREWALL',
|
|
target: 'RETURN',
|
|
family: 4,
|
|
});
|
|
},
|
|
);
|
|
});
|
|
|
|
it('should respect the HOST_FIREWALL_MODE configuration value: off', async function () {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule }) => {
|
|
// set the firewall to be in off mode...
|
|
await config.set({ firewallMode: 'off' });
|
|
await hasAppliedRules;
|
|
|
|
// expect that we jump to the firewall chain...
|
|
expectRule({
|
|
action: RuleAction.Append,
|
|
target: 'BALENA-FIREWALL',
|
|
chain: 'INPUT',
|
|
family: 4,
|
|
});
|
|
|
|
// expect to return...
|
|
const returnRuleIdx = expectRule({
|
|
table: 'filter',
|
|
chain: 'BALENA-FIREWALL',
|
|
target: 'RETURN',
|
|
family: 4,
|
|
});
|
|
|
|
// ... just before we reject everything
|
|
const rejectRuleIdx = expectRule({
|
|
chain: 'BALENA-FIREWALL',
|
|
target: 'REJECT',
|
|
matches: iptablesMock.RuleProperty.NotSet,
|
|
family: 4,
|
|
});
|
|
|
|
expect(returnRuleIdx).to.be.lessThan(rejectRuleIdx);
|
|
},
|
|
);
|
|
});
|
|
|
|
it('should respect the HOST_FIREWALL_MODE configuration value: on', async function () {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule, expectNoRule }) => {
|
|
// set the firewall to be in auto mode...
|
|
await config.set({ firewallMode: 'on' });
|
|
await hasAppliedRules;
|
|
|
|
// expect that we jump to the firewall chain...
|
|
expectRule({
|
|
action: RuleAction.Append,
|
|
target: 'BALENA-FIREWALL',
|
|
chain: 'INPUT',
|
|
family: 4,
|
|
});
|
|
|
|
// expect to not return for any reason...
|
|
expectNoRule({
|
|
chain: 'BALENA-FIREWALL',
|
|
target: 'RETURN',
|
|
});
|
|
},
|
|
);
|
|
});
|
|
|
|
it('should respect the HOST_FIREWALL_MODE configuration value: auto (no services in host-network)', async function () {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule }) => {
|
|
await dbFormat.setApps(
|
|
{
|
|
myapp: {
|
|
id: 2,
|
|
name: 'test-app2',
|
|
class: 'fleet',
|
|
is_host: false,
|
|
releases: {
|
|
abcdef2: {
|
|
id: 1232,
|
|
services: {
|
|
'test-service': {
|
|
id: 567,
|
|
image: 'test-image',
|
|
image_id: 5,
|
|
environment: {
|
|
TEST_VAR: 'test-string',
|
|
},
|
|
labels: {},
|
|
composition: {
|
|
tty: true,
|
|
},
|
|
},
|
|
},
|
|
networks: {},
|
|
volumes: {},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
apiEndpoint,
|
|
);
|
|
|
|
// set the firewall to be in auto mode...
|
|
await config.set({ firewallMode: 'auto' });
|
|
await hasAppliedRules;
|
|
|
|
// expect that we jump to the firewall chain...
|
|
expectRule({
|
|
action: RuleAction.Append,
|
|
target: 'BALENA-FIREWALL',
|
|
chain: 'INPUT',
|
|
family: 4,
|
|
});
|
|
|
|
// expect to return...
|
|
expectRule({
|
|
chain: 'BALENA-FIREWALL',
|
|
target: 'RETURN',
|
|
family: 4,
|
|
});
|
|
},
|
|
);
|
|
});
|
|
|
|
it('should respect the HOST_FIREWALL_MODE configuration value: auto (service in host-network)', async function () {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule, expectNoRule }) => {
|
|
await dbFormat.setApps(
|
|
{
|
|
myapp: {
|
|
id: 2,
|
|
name: 'test-app2',
|
|
class: 'fleet',
|
|
is_host: false,
|
|
releases: {
|
|
abcdef2: {
|
|
id: 1232,
|
|
services: {
|
|
'test-service': {
|
|
id: 567,
|
|
image: 'test-image',
|
|
image_id: 5,
|
|
environment: {
|
|
TEST_VAR: 'test-string',
|
|
},
|
|
labels: {},
|
|
composition: {
|
|
tty: true,
|
|
network_mode: 'host',
|
|
},
|
|
},
|
|
},
|
|
networks: {},
|
|
volumes: {},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
apiEndpoint,
|
|
);
|
|
|
|
// set the firewall to be in auto mode...
|
|
await config.set({ firewallMode: 'auto' });
|
|
await hasAppliedRules;
|
|
|
|
// expect that we jump to the firewall chain...
|
|
expectRule({
|
|
action: RuleAction.Append,
|
|
target: 'BALENA-FIREWALL',
|
|
chain: 'INPUT',
|
|
family: 4,
|
|
});
|
|
|
|
// expect to return...
|
|
expectNoRule({
|
|
chain: 'BALENA-FIREWALL',
|
|
target: 'RETURN',
|
|
family: 4,
|
|
});
|
|
},
|
|
);
|
|
});
|
|
|
|
it('should catch errors when rule changes fail', async () => {
|
|
await iptablesMock.whilstMocked(async ({ hasAppliedRules }) => {
|
|
// clear the spies...
|
|
loggerSpy.resetHistory();
|
|
logSpy.resetHistory();
|
|
|
|
// set the firewall to be in off mode...
|
|
await config.set({ firewallMode: 'off' });
|
|
await hasAppliedRules;
|
|
|
|
// should have caught the error and logged it
|
|
expect(logSpy.calledWith('Error applying firewall mode')).to.be.true;
|
|
expect(loggerSpy.called).to.be.true;
|
|
}, iptablesMock.realRuleAdaptor);
|
|
});
|
|
});
|
|
|
|
describe('Service rules', () => {
|
|
const rejectAllRule = {
|
|
target: 'REJECT',
|
|
chain: 'BALENA-FIREWALL',
|
|
matches: iptablesMock.RuleProperty.NotSet,
|
|
};
|
|
|
|
const checkForRules = (
|
|
rules: Array<iptablesMock.Testable<Rule>> | iptablesMock.Testable<Rule>,
|
|
expectRule: (rule: iptablesMock.Testable<Rule>) => number,
|
|
) => {
|
|
rules = _.castArray(rules);
|
|
rules.forEach((rule) => {
|
|
const ruleIdx = expectRule(rule);
|
|
|
|
// make sure we reject AFTER the rule...
|
|
const rejectAllRuleIdx = expectRule(rejectAllRule);
|
|
expect(ruleIdx).is.lessThan(rejectAllRuleIdx);
|
|
});
|
|
};
|
|
|
|
it('should have a rule to allow DNS traffic from the balena0 interface', async () => {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule }) => {
|
|
// set the firewall to be on...
|
|
await config.set({ firewallMode: 'on' });
|
|
await hasAppliedRules;
|
|
|
|
[4, 6].forEach((family: 4 | 6) => {
|
|
// expect that we have a rule to allow DNS access...
|
|
checkForRules(
|
|
{
|
|
family,
|
|
target: 'ACCEPT',
|
|
chain: 'BALENA-FIREWALL',
|
|
proto: 'udp',
|
|
matches: ['--dport 53', '-i balena0'],
|
|
},
|
|
expectRule,
|
|
);
|
|
});
|
|
},
|
|
);
|
|
});
|
|
|
|
it('should have a rule to allow SSH traffic any interface', async () => {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule }) => {
|
|
// set the firewall to be on...
|
|
await config.set({ firewallMode: 'on' });
|
|
await hasAppliedRules;
|
|
|
|
[4, 6].forEach((family: 4 | 6) => {
|
|
// expect that we have a rule to allow SSH access...
|
|
checkForRules(
|
|
{
|
|
family,
|
|
target: 'ACCEPT',
|
|
chain: 'BALENA-FIREWALL',
|
|
proto: 'tcp',
|
|
matches: ['--dport 22222'],
|
|
},
|
|
expectRule,
|
|
);
|
|
});
|
|
},
|
|
);
|
|
});
|
|
|
|
it('should have a rule to allow Multicast traffic any interface', async () => {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule }) => {
|
|
// set the firewall to be on...
|
|
await config.set({ firewallMode: 'on' });
|
|
await hasAppliedRules;
|
|
|
|
[4, 6].forEach((family: 4 | 6) => {
|
|
// expect that we have a rule to allow multicast...
|
|
checkForRules(
|
|
{
|
|
family,
|
|
target: 'ACCEPT',
|
|
chain: 'BALENA-FIREWALL',
|
|
matches: ['-m addrtype', '--dst-type MULTICAST'],
|
|
},
|
|
expectRule,
|
|
);
|
|
});
|
|
},
|
|
);
|
|
});
|
|
|
|
it('should have a rule to allow balenaEngine traffic any interface', async () => {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule }) => {
|
|
// set the firewall to be on...
|
|
await config.set({ firewallMode: 'on' });
|
|
await hasAppliedRules;
|
|
|
|
[4, 6].forEach((family: 4 | 6) => {
|
|
// expect that we have a rule to allow balenaEngine access...
|
|
checkForRules(
|
|
{
|
|
family,
|
|
target: 'ACCEPT',
|
|
chain: 'BALENA-FIREWALL',
|
|
proto: 'tcp',
|
|
matches: ['--dport 2375'],
|
|
},
|
|
expectRule,
|
|
);
|
|
});
|
|
},
|
|
);
|
|
});
|
|
});
|
|
|
|
describe('Supervisor API access', () => {
|
|
it('should allow access in localmode', async function () {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule }) => {
|
|
// set the device to be in local mode...
|
|
await config.set({ localMode: true });
|
|
await hasAppliedRules;
|
|
|
|
[4, 6].forEach((family: 4 | 6) => {
|
|
// make sure we have a rule to allow traffic on ANY interface
|
|
const allowRuleIdx = expectRule({
|
|
proto: 'tcp',
|
|
matches: [`--dport ${listenPort}`],
|
|
target: 'ACCEPT',
|
|
chain: 'BALENA-FIREWALL',
|
|
table: 'filter',
|
|
family,
|
|
});
|
|
|
|
// make sure we have a rule to block traffic on ANY interface also
|
|
const rejectRuleIdx = expectRule({
|
|
proto: 'tcp',
|
|
matches: [`--dport ${listenPort}`],
|
|
target: 'REJECT',
|
|
chain: 'BALENA-FIREWALL',
|
|
table: 'filter',
|
|
family,
|
|
});
|
|
|
|
// we should always reject AFTER we allow
|
|
expect(allowRuleIdx).to.be.lessThan(rejectRuleIdx);
|
|
});
|
|
},
|
|
);
|
|
});
|
|
|
|
it('should allow limited access in non-localmode', async function () {
|
|
await iptablesMock.whilstMocked(
|
|
async ({ hasAppliedRules, expectRule, expectNoRule }) => {
|
|
// set the device to be in local mode...
|
|
await config.set({ localMode: false });
|
|
await hasAppliedRules;
|
|
|
|
// ensure we have no unrestricted rule...
|
|
expectNoRule({
|
|
chain: 'BALENA-FIREWALL',
|
|
proto: 'tcp',
|
|
matches: [`--dport ${listenPort}`],
|
|
target: 'ACCEPT',
|
|
family: 4,
|
|
});
|
|
|
|
// ensure we do have a restricted rule for each interface...
|
|
let allowRuleIdx = -1;
|
|
constants.allowedInterfaces.forEach((intf) => {
|
|
[4, 6].forEach((family: 4 | 6) => {
|
|
allowRuleIdx = expectRule({
|
|
chain: 'BALENA-FIREWALL',
|
|
proto: 'tcp',
|
|
matches: [`--dport ${listenPort}`, `-i ${intf}`],
|
|
target: 'ACCEPT',
|
|
family,
|
|
});
|
|
});
|
|
});
|
|
|
|
// make sure we have a rule to block traffic on ANY interface also
|
|
const rejectRuleIdx = expectRule({
|
|
proto: 'tcp',
|
|
matches: [`--dport ${listenPort}`],
|
|
target: 'REJECT',
|
|
chain: 'BALENA-FIREWALL',
|
|
table: 'filter',
|
|
});
|
|
|
|
// we should always reject AFTER we allow
|
|
expect(allowRuleIdx).to.be.lessThan(rejectRuleIdx);
|
|
},
|
|
);
|
|
});
|
|
});
|
|
});
|