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fqdn.go
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fqdn.go
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// Copyright 2018-2019 Authors of Cilium
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package RuntimeTest
import (
"context"
"fmt"
"os"
"path/filepath"
"sort"
"strings"
"github.com/cilium/cilium/api/v1/models"
. "github.com/cilium/cilium/test/ginkgo-ext"
"github.com/cilium/cilium/test/helpers"
"github.com/cilium/cilium/test/helpers/constants"
. "github.com/onsi/gomega"
)
var bindCiliumTestTemplate = `
$TTL 3
$ORIGIN cilium.test.
@ IN SOA cilium.test. admin.cilium.test. (
200608081 ; serial, todays date + todays serial #
8H ; refresh, seconds
2H ; retry, seconds
4W ; expire, seconds
1D ) ; minimum, seconds
;
;
@ IN NS server
server.cilium.test. IN A 127.0.0.1
world1.cilium.test. IN A %[1]s
world2.cilium.test. IN A %[2]s
world3.cilium.test. IN A %[3]s
roundrobin.cilium.test. 1 IN A %[1]s
roundrobin.cilium.test. 1 IN A %[2]s
roundrobin.cilium.test. 1 IN A %[3]s
level1CNAME.cilium.test. 1 IN CNAME world1
level2CNAME.cilium.test. 1 IN CNAME level1CNAME.cilium.test.
level3CNAME.cilium.test. 1 IN CNAME level2CNAME.cilium.test.
world1CNAME.cilium.test. 1 IN CNAME world1
world2CNAME.cilium.test. 1 IN CNAME world2
world3CNAME.cilium.test. 1 IN CNAME world3
`
var bindOutsideTestTemplate = `
$TTL 3
$ORIGIN outside.test.
@ IN SOA outside.test. admin.outside.test. (
200608081 ; serial, todays date + todays serial #
8H ; refresh, seconds
2H ; retry, seconds
4W ; expire, seconds
1D ) ; minimum, seconds
;
;
@ IN NS server
server.outside.test. IN A 127.0.0.1
world1.outside.test. IN A %[1]s
world2.outside.test. IN A %[2]s
world3.outside.test. IN A %[3]s
`
var bindDNSSECTestTemplate = `
$TTL 3
$ORIGIN dnssec.test.
@ IN SOA dnssec.test. admin.dnssec.test. (
200608081 ; serial, todays date + todays serial #
8H ; refresh, seconds
2H ; retry, seconds
4W ; expire, seconds
1D ) ; minimum, seconds
;
;
@ IN NS server
server.dnssec.test. IN A 127.0.0.1
world1.dnssec.test. IN A %[1]s
world2.dnssec.test. IN A %[2]s
world3.dnssec.test. IN A %[3]s
`
var bind9ZoneConfig = `
zone "cilium.test" {
type master;
file "/etc/bind/db.cilium.test";
};
zone "outside.test" {
type master;
file "/etc/bind/db.outside.test";
};
zone "dnssec.test" {
type master;
file "/etc/bind/db.dnssec.test";
auto-dnssec maintain;
inline-signing yes;
key-directory "/etc/bind/keys";
};
`
var _ = Describe("RuntimeFQDNPolicies", func() {
const (
bindContainerName = "bind"
worldNetwork = "world"
WorldHttpd1 = "WorldHttpd1"
WorldHttpd2 = "WorldHttpd2"
WorldHttpd3 = "WorldHttpd3"
OutsideHttpd1 = "OutsideHttpd1"
OutsideHttpd2 = "OutsideHttpd2"
OutsideHttpd3 = "OutsideHttpd3"
bindDBCilium = "db.cilium.test"
bindDBOutside = "db.outside.test"
bindDBDNSSSEC = "db.dnssec.test"
bindNamedConf = "named.conf.local"
bindNamedOptions = "named.conf.options"
world1Domain = "world1.cilium.test"
world1Target = "http://world1.cilium.test"
world2Target = "http://world2.cilium.test"
DNSSECDomain = "dnssec.test"
DNSSECWorld1Target = "world1.dnssec.test"
DNSSECWorld2Target = "world2.dnssec.test"
DNSSECContainerName = "dnssec"
)
var (
vm *helpers.SSHMeta
monitorStop = func() error { return nil }
ciliumTestImages = map[string]string{
WorldHttpd1: constants.HttpdImage,
WorldHttpd2: constants.HttpdImage,
WorldHttpd3: constants.HttpdImage,
}
ciliumOutsideImages = map[string]string{
OutsideHttpd1: constants.HttpdImage,
OutsideHttpd2: constants.HttpdImage,
OutsideHttpd3: constants.HttpdImage,
}
worldIps = map[string]string{}
outsideIps = map[string]string{}
generatedFiles = []string{bindDBCilium, bindNamedConf, bindDBOutside, bindDBDNSSSEC}
DNSServerIP = ""
)
BeforeAll(func() {
vm = helpers.InitRuntimeHelper(helpers.Runtime, logger)
ExpectCiliumReady(vm)
By("Create sample containers in %q docker network", worldNetwork)
vm.Exec(fmt.Sprintf("docker network create %s", worldNetwork)).ExpectSuccess(
"%q network cant be created", worldNetwork)
for name, image := range ciliumTestImages {
vm.ContainerCreate(name, image, worldNetwork, fmt.Sprintf("-l id.%s", name))
res := vm.ContainerInspect(name)
res.ExpectSuccess("Container is not ready after create it")
ip, err := res.Filter(fmt.Sprintf(`{[0].NetworkSettings.Networks.%s.IPAddress}`, worldNetwork))
Expect(err).To(BeNil(), "Cannot retrieve network info for %q", name)
worldIps[name] = ip.String()
}
bindConfig := fmt.Sprintf(bindCiliumTestTemplate, getMapValues(worldIps)...)
err := helpers.RenderTemplateToFile(bindDBCilium, bindConfig, os.ModePerm)
Expect(err).To(BeNil(), "bind file can't be created")
// // Installed DNSSEC domain
bindConfig = fmt.Sprintf(bindDNSSECTestTemplate, getMapValues(worldIps)...)
err = helpers.RenderTemplateToFile(bindDBDNSSSEC, bindConfig, os.ModePerm)
Expect(err).To(BeNil(), "bind file can't be created")
for name, image := range ciliumOutsideImages {
vm.ContainerCreate(name, image, worldNetwork, fmt.Sprintf("-l id.%s", name))
res := vm.ContainerInspect(name)
res.ExpectSuccess("Container is not ready after create it")
ip, err := res.Filter(fmt.Sprintf(`{[0].NetworkSettings.Networks.%s.IPAddress}`, worldNetwork))
Expect(err).To(BeNil(), "Cannot retrieve network info for %q", name)
outsideIps[name] = ip.String()
}
bindConfig = fmt.Sprintf(bindOutsideTestTemplate, getMapValues(outsideIps)...)
err = helpers.RenderTemplateToFile(bindDBOutside, bindConfig, os.ModePerm)
Expect(err).To(BeNil(), "bind file can't be created")
err = helpers.RenderTemplateToFile(bindNamedConf, bind9ZoneConfig, os.ModePerm)
Expect(err).To(BeNil(), "Bind named.conf local file can't be created")
vm.ExecWithSudo("mkdir -m777 -p /data")
for _, file := range generatedFiles {
vm.Exec(fmt.Sprintf("mv %s /data/%s",
filepath.Join(helpers.BasePath, file), file)).ExpectSuccess(
"Cannot copy %q to bind container", file)
}
By("Setting up bind container")
// Use a bridge network (The docker default) to be able to use this
// server from cilium agent. This should change when DNS proxy is in
// place.
res := vm.ContainerCreate(
bindContainerName,
constants.BindContainerImage,
"bridge",
fmt.Sprintf("-p 53:53/udp -p 53:53/tcp -v /data:/data -l id.bind -e DNSSEC_DOMAIN=%s", DNSSECDomain))
res.ExpectSuccess("Cannot start bind container")
res = vm.ContainerInspect(bindContainerName)
res.ExpectSuccess("Container is not ready after create it")
ip, err := res.Filter(`{[0].NetworkSettings.Networks.bridge.IPAddress}`)
DNSServerIP = ip.String()
Expect(err).To(BeNil(), "Cannot retrieve network info for %q", bindContainerName)
vm.SampleContainersActions(
helpers.Create,
helpers.CiliumDockerNetwork,
fmt.Sprintf("--dns=%s -l app=test", DNSServerIP))
areEndpointsReady := vm.WaitEndpointsReady()
Expect(areEndpointsReady).Should(BeTrue(), "Endpoints are not ready after timeout")
By("Update resolv.conf on host to update the poller")
// This should be disabled when DNS proxy is in place.
vm.ExecWithSudo(`bash -c "echo -e \"nameserver 127.0.0.1\nnameserver 1.1.1.1\" > /etc/resolv.conf"`)
// Need to restart cilium to use the latest resolv.conf info.
vm.ExecWithSudo("systemctl restart cilium")
areEndpointsReady = vm.WaitEndpointsReady()
Expect(areEndpointsReady).Should(BeTrue(), "Endpoints are not ready after timeout")
})
AfterAll(func() {
// @TODO remove this one when DNS proxy is in place.
vm.ExecWithSudo(`bash -c 'echo -e "nameserver 8.8.8.8\nnameserver 1.1.1.1" > /etc/resolv.conf'`)
for name := range ciliumTestImages {
vm.ContainerRm(name)
}
for name := range ciliumOutsideImages {
vm.ContainerRm(name)
}
vm.SampleContainersActions(helpers.Delete, "")
vm.ContainerRm(bindContainerName)
vm.Exec(fmt.Sprintf("docker network rm %s", worldNetwork))
vm.CloseSSHClient()
})
JustBeforeEach(func() {
monitorStop = vm.MonitorStart()
})
JustAfterEach(func() {
vm.ValidateNoErrorsInLogs(CurrentGinkgoTestDescription().Duration)
ExpectDockerContainersMatchCiliumEndpoints(vm)
monitorStop()
})
AfterEach(func() {
vm.PolicyDelAll()
})
AfterFailed(func() {
GinkgoPrint(vm.Exec(
`docker ps -q | xargs -n 1 docker inspect --format ` +
`'{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}} {{ .Name }}'` +
`| sed 's/ \// /'`).Output().String())
vm.ReportFailed("cilium policy get")
})
expectFQDNSareApplied := func(domain string, minNumIDs int) {
escapedDomain := strings.Replace(domain, `.`, `\\.`, -1)
jqfilter := fmt.Sprintf(`jq -c '.[] | select(.identities|length >= %d) | select(.users|length > 0) | .selector | match("^MatchName: (\\w+\\.%s|), MatchPattern: ([\\w*]+\\.%s|)$") | length > 0'`, minNumIDs, escapedDomain, escapedDomain)
body := func() bool {
res := vm.Exec(fmt.Sprintf(`cilium policy selectors -o json | %s`, jqfilter))
return strings.HasPrefix(res.GetStdOut(), "true")
}
err := helpers.WithTimeout(
body,
"ToFQDNs did not update any Selectors",
&helpers.TimeoutConfig{Timeout: helpers.HelperTimeout})
Expect(err).To(BeNil(), "FQDN policy didn't correctly update the policy selectors")
}
fqdnPolicyImport := func(fqdnPolicy string) {
_, err := vm.PolicyRenderAndImport(fqdnPolicy)
ExpectWithOffset(1, err).To(BeNil(), "Unable to import policy: %s", err)
}
It("Enforces ToFQDNs policy", func() {
By("Importing policy with ToFQDN rules")
// notaname.cilium.io never returns IPs, and is there to test that the
// other name does get populated.
fqdnPolicy := `
[
{
"labels": [{
"key": "toFQDNs-runtime-test-policy"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}]
}]
},
{
"toFQDNs": [
{
"matchName": "world1.cilium.test"
}
]
}
]
}
]`
fqdnPolicyImport(fqdnPolicy)
expectFQDNSareApplied("cilium.test", 1)
By("Denying egress to IPs of DNS names not in ToFQDNs, and normal IPs")
// www.cilium.io has a different IP than cilium.io (it is CNAMEd as well!),
// and so should be blocked.
// cilium.io.cilium.io doesn't exist.
// 1.1.1.1, amusingly, serves HTTP.
for _, blockedTarget := range []string{"world2.cilium.test"} {
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(blockedTarget))
res.ExpectFail("Curl succeeded against blocked DNS name %s" + blockedTarget)
}
By("Allowing egress to IPs of specified ToFQDN DNS names")
res := vm.ContainerExec(helpers.App1, helpers.CurlWithHTTPCode(world1Target))
res.ExpectSuccess("Cannot access to allowed DNS name %q", world1Target)
})
It("Validate dns-proxy monitor information", func() {
ctx, cancel := context.WithCancel(context.Background())
monitorCMD := vm.ExecInBackground(ctx, "cilium monitor --type=l7")
defer cancel()
policy := `
[
{
"labels": [{
"key": "monitor"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchPattern": "world1.cilium.test"}
]
}
}]
},
{
"toFQDNs": [{
"matchPattern": "world1.cilium.test"
}]
}
]
}
]`
_, err := vm.PolicyRenderAndImport(policy)
Expect(err).To(BeNil(), "Policy cannot be imported")
expectFQDNSareApplied("cilium.test", 1)
allowVerdict := "verdict Forwarded DNS Query: world1.cilium.test"
deniedVerdict := "verdict Denied DNS Query: world2.cilium.test"
By("Testing connectivity to Cilium.test domain")
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(world1Target))
res.ExpectSuccess("Cannot access to %q", world1Target)
_ = monitorCMD.WaitUntilMatch(allowVerdict)
monitorCMD.ExpectContains(allowVerdict)
monitorCMD.Reset()
By("Ensure connectivity to world2 is block")
res = vm.ContainerExec(helpers.App1, helpers.CurlFail(world2Target))
res.ExpectFail("Can access to %q when it should block", world1Target)
monitorCMD.WaitUntilMatch(deniedVerdict)
monitorCMD.ExpectContains(deniedVerdict)
})
It("Interaction with other ToCIDR rules", func() {
policy := `
[
{
"labels": [{
"key": "FQDN test - interaction with other toCIDRSet rules, no poller"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchPattern": "*.cilium.test"}
]
}
}]
},
{
"toFQDNs": [{
"matchPattern": "*.cilium.test"
}]
},
{
"toCIDRSet": [
{"cidr": "%s/32"}
]
}
]
}
]`
_, err := vm.PolicyRenderAndImport(fmt.Sprintf(policy, outsideIps[OutsideHttpd1]))
Expect(err).To(BeNil(), "Policy cannot be imported")
expectFQDNSareApplied("cilium.test", 1)
By("Testing connectivity to Cilium.test domain")
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(world1Target))
res.ExpectSuccess("Cannot access toCIDRSet allowed IP of DNS name %q", world1Target)
By("Testing connectivity to existing CIDR rule")
res = vm.ContainerExec(helpers.App1, helpers.CurlFail(outsideIps[OutsideHttpd1]))
res.ExpectSuccess("Cannot access to CIDR rule when should work")
By("Ensure connectivity to other domains is still block")
res = vm.ContainerExec(helpers.App1, helpers.CurlFail("http://world2.outside.test"))
res.ExpectFail("Connectivity to outside domain successfull when it should be block")
})
It("Roundrobin DNS", func() {
numberOfTries := 5
target := "roundrobin.cilium.test"
policy := `
[
{
"labels": [{
"key": "FQDN test - interaction with other toCIDRSet rules, no poller"
}],
"endpointSelector": {
"matchLabels": {
"container:app": "test"
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchPattern": "roundrobin.cilium.test"}
]
}
}]
},
{
"toFQDNs": [{
"matchName": "roundrobin.cilium.test"
}]
}
]
}
]`
_, err := vm.PolicyRenderAndImport(policy)
Expect(err).To(BeNil(), "Policy cannot be imported")
endpoints, err := vm.GetEndpointsIds()
Expect(err).To(BeNil(), "Endpoints can't be retrieved")
for _, container := range []string{helpers.App1, helpers.App2} {
Expect(endpoints).To(HaveKey(container),
"Container %q is not present in the endpoints list", container)
ep := vm.EndpointGet(endpoints[container])
Expect(ep).ShouldNot(BeNil(),
"Endpoint for container %q cannot be retrieved", container)
Expect(ep.Status.Policy.Realized.PolicyEnabled).To(
Equal(models.EndpointPolicyEnabledEgress),
"Endpoint %q does not have policy applied", container)
}
By("Testing %q and %q containers are allow to work with roundrobin dns", helpers.App1, helpers.App2)
for i := 0; i < numberOfTries; i++ {
for _, container := range []string{helpers.App1, helpers.App2} {
By("Testing connectivity to Cilium.test domain")
res := vm.ContainerExec(container, helpers.CurlFail(target))
res.ExpectSuccess("Container %q cannot access to %q when should work", container, target)
}
}
})
It("Can update L7 DNS policy rules", func() {
By("Importing policy with L7 DNS rules")
fqdnPolicy := `
[
{
"labels": [{
"key": "toFQDNs-runtime-test-policy"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [{"matchPattern": "world1.cilium.test"}]
}
}]
},
{
"toFQDNs": [
{
"matchPattern": "*.cilium.test"
}
]
}
]
}
]`
_, err := vm.PolicyRenderAndImport(fqdnPolicy)
Expect(err).To(BeNil(), "Policy cannot be imported")
expectFQDNSareApplied("cilium.test", 1)
By("Allowing egress to IPs of only the specified DNS names")
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(world2Target))
res.ExpectFail("Curl succeeded against blocked DNS name %q", world2Target)
res = vm.ContainerExec(helpers.App1, helpers.CurlWithHTTPCode(world1Target))
res.ExpectSuccess("Cannot access %q", world1Target)
By("Updating policy with L7 DNS rules")
fqdnPolicy = `
[
{
"labels": [{
"key": "toFQDNs-runtime-test-policy"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [{"matchPattern": "world2.cilium.test"}]
}
}]
},
{
"toFQDNs": [
{
"matchPattern": "*.cilium.test"
}
]
}
]
}
]`
_, err = vm.PolicyRenderAndImport(fqdnPolicy)
Expect(err).To(BeNil(), "Policy cannot be imported")
expectFQDNSareApplied("cilium.test", 1)
By("Allowing egress to IPs of the new DNS name")
res = vm.ContainerExec(helpers.App1, helpers.CurlWithHTTPCode(world2Target))
res.ExpectSuccess("Cannot access %q", world2Target)
})
It("CNAME follow", func() {
By("Testing one level of CNAME")
policy := `
[
{
"labels": [{
"key": "CNAME follow one level"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchPattern": "*.cilium.test"}
]
}
}]
},
{
"toFQDNs": [{
"matchName": "level1CNAME.cilium.test"
}]
}
]
}
]`
_, err := vm.PolicyRenderAndImport(policy)
Expect(err).To(BeNil(), "Policy cannot be imported")
expectFQDNSareApplied("cilium.test", 1)
target := "http://level1CNAME.cilium.test"
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(target))
res.ExpectSuccess("Container %q cannot access to %q when should work", helpers.App1, target)
By("Testing three level CNAME to same target still works")
target = "http://level3CNAME.cilium.test"
res = vm.ContainerExec(helpers.App1, helpers.CurlFail(target))
res.ExpectSuccess("Container %q cannot access to %q when should work", helpers.App1, target)
By("Testing other CNAME in same domain should fail")
target = "http://world2CNAME.cilium.test"
res = vm.ContainerExec(helpers.App1, helpers.CurlFail(target))
res.ExpectFail("Container %q can access to %q when shouldn't work", helpers.App1, target)
By("Testing three level of CNAME")
policy = `
[
{
"labels": [{
"key": "CNAME follow three levels"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app2": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchPattern": "*.cilium.test"}
]
}
}]
},
{
"toFQDNs": [{
"matchName": "level3CNAME.cilium.test"
}]
}
]
}
]`
_, err = vm.PolicyRenderAndImport(policy)
Expect(err).To(BeNil(), "Policy cannot be imported")
expectFQDNSareApplied("cilium.test", 1)
target = "http://level3CNAME.cilium.test"
res = vm.ContainerExec(helpers.App2, helpers.CurlFail(target))
res.ExpectSuccess("Container %q cannot access to %q when should work", helpers.App2, target)
})
It("Enforces L3 policy even when no IPs are inserted", func() {
By("Importing policy with toFQDNs rules")
fqdnPolicy := `
[
{
"labels": [{
"key": "toFQDNs-runtime-test-policy"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toFQDNs": [
{
"matchPattern": "notadomain.cilium.io"
}
]
}
]
}
]`
_, err := vm.PolicyRenderAndImport(fqdnPolicy)
Expect(err).To(BeNil(), "Policy cannot be imported")
expectFQDNSareApplied("cilium.io", 0)
By("Denying egress to any IPs or domains")
for _, blockedTarget := range []string{"1.1.1.1", "cilium.io", "google.com"} {
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(blockedTarget))
res.ExpectFail("Curl to %s succeeded when in deny-all due to toFQDNs" + blockedTarget)
}
})
It(`Implements matchPattern: "*"`, func() {
By(`Importing policy with matchPattern: "*" rule`)
fqdnPolicy := `
[
{
"labels": [{
"key": "toFQDNs-runtime-test-policy"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchPattern": "*"}
]
}
}]
},
{
"toFQDNs": [
{"matchPattern": "world1.cilium.test"},
{"matchPattern": "world*.cilium.test"},
{"matchPattern": "level*CNAME.cilium.test"}
]
}
]
}
]`
_, err := vm.PolicyRenderAndImport(fqdnPolicy)
Expect(err).To(BeNil(), "Policy cannot be imported")
expectFQDNSareApplied("cilium.test", 1)
By("Denying egress to any IPs or domains")
for _, allowedTarget := range []string{"world1.cilium.test", "world2.cilium.test", "world3.cilium.test", "level1CNAME.cilium.test", "level2CNAME.cilium.test"} {
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(allowedTarget))
res.ExpectSuccess("Curl to %s failed when in deny-all due to toFQDNs", allowedTarget)
}
for _, blockedTarget := range []string{"1.1.1.1", "cilium.io", "google.com"} {
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(blockedTarget))
res.ExpectFail("Curl to %s succeeded when in allow-all DNS but limited toFQDNs", blockedTarget)
}
})
It("Validates DNSSEC responses", func() {
policy := `
[
{
"labels": [{
"key": "FQDN test - DNSSEC domain"
}],
"endpointSelector": {
"matchLabels": {
"container:id.dnssec": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchPattern": "world1.dnssec.test"}
]
}
}]
},
{
"toFQDNs": [{
"matchPattern": "world1.dnssec.test"
}]
}
]
}
]`
_, err := vm.PolicyRenderAndImport(policy)
Expect(err).To(BeNil(), "Policy cannot be imported")
// Selector cache is populated when a policy is applied on an endpoint.
// DNSSEC container is not running yet, so we can't expect the FQDNs to be applied yet.
// expectFQDNSareApplied("dnssec.test", 1)
By("Validate that allow target is working correctly")
res := vm.ContainerRun(
DNSSECContainerName,
constants.DNSSECContainerImage,
helpers.CiliumDockerNetwork,
fmt.Sprintf("-l id.%s --dns=%s --rm", DNSSECContainerName, DNSServerIP),
DNSSECWorld1Target)
res.ExpectSuccess("Cannot connect to %q when it should work", DNSSECContainerName)
By("Validate that disallow target is working correctly")
res = vm.ContainerRun(
DNSSECContainerName,
constants.DNSSECContainerImage,
helpers.CiliumDockerNetwork,
fmt.Sprintf("-l id.%s --dns=%s --rm", DNSSECContainerName, DNSServerIP),
DNSSECWorld2Target)
res.ExpectFail("Can connect to %q when it should not work", DNSSECContainerName)
})
Context("toFQDNs populates toCIDRSet when poller is disabled (data from proxy)", func() {
var config = `
PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin
CILIUM_OPTS=--kvstore consul --kvstore-opt consul.address=127.0.0.1:8500 --debug --pprof=true --log-system-load --tofqdns-enable-poller=false
INITSYSTEM=SYSTEMD`
BeforeAll(func() {
vm.SetUpCiliumWithOptions(config)
ExpectCiliumReady(vm)
areEndpointsReady := vm.WaitEndpointsReady()
Expect(areEndpointsReady).Should(BeTrue(), "Endpoints are not ready after timeout")
})
BeforeEach(func() {
By("Clearing fqdn cache: %s", vm.Exec("cilium fqdn cache clean -f").CombineOutput().String())
})
AfterAll(func() {
vm.SetUpCilium()
_ = vm.WaitEndpointsReady() // Don't assert because don't want to block all AfterAll.
})
It("Policy addition after DNS lookup", func() {
ctx, cancel := context.WithCancel(context.Background())
monitorCMD := vm.ExecInBackground(ctx, "cilium monitor")
defer cancel()
policy := `
[
{
"labels": [{
"key": "Policy addition after DNS lookup"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchName": "world1.cilium.test"},
{"matchPattern": "*.cilium.test"}
]
}
}]
},
{
"toFQDNs": [
{"matchName": "world1.cilium.test"},
{"matchPattern": "*.cilium.test"}
]
}
]
}
]`
By("Testing connectivity to %q", world1Target)
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(world1Target))
res.ExpectSuccess("Cannot access %q", world1Target)
By("Importing the policy")
_, err := vm.PolicyRenderAndImport(policy)
Expect(err).To(BeNil(), "Policy cannot be imported")
By("Trying curl connection to %q without DNS request", world1Target)
// The --resolve below suppresses further lookups
curlCmd := helpers.CurlFail(fmt.Sprintf("%s:80/ --resolve %s:80:%s", world1Target, world1Domain, worldIps[WorldHttpd1]))
monitorCMD.Reset()
res = vm.ContainerExec(helpers.App1, curlCmd)
res.ExpectFail("Can access to %q when should not (No DNS request to allow the IP)", world1Target)
monitorCMD.ExpectContains("xx drop (Policy denied (L3))")
By("Testing connectivity to %q", world1Target)
res = vm.ContainerExec(helpers.App1, helpers.CurlFail(world1Target))
res.ExpectSuccess("Cannot access to %q when it should work", world1Target)
})
It("L3-dependent L7/HTTP with toFQDN updates proxy policy", func() {
ctx, cancel := context.WithCancel(context.Background())
monitorCMD := vm.ExecInBackground(ctx, "cilium monitor")
defer cancel()
policy := `
[
{
"labels": [{
"key": "L3-dependent L7 with toFQDN"
}],
"endpointSelector": {
"matchLabels": {
"container:id.app1": ""
}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchName": "world1.cilium.test"},
{"matchPattern": "*.cilium.test"}
]
}
}]
},
{
"toPorts": [{
"ports":[{"port": "80", "protocol": "TCP"}],
"rules": {
"http": [
{"method": "GET"}
]
}
}],
"toFQDNs": [
{"matchName": "world1.cilium.test"},
{"matchPattern": "*.cilium.test"}
]
}
]
}
]`
By("Testing connectivity to %q", world1Target)
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(world1Target))
res.ExpectSuccess("Cannot access %q", world1Target)
By("Importing the policy")
_, err := vm.PolicyRenderAndImport(policy)
Expect(err).To(BeNil(), "Policy cannot be imported")
By("Trying curl connection to %q without DNS request", world1Target)
// The --resolve below suppresses further lookups
curlCmd := helpers.CurlFail(fmt.Sprintf("%s:80/ --resolve %s:80:%s", world1Target, world1Domain, worldIps[WorldHttpd1]))
monitorCMD.Reset()
res = vm.ContainerExec(helpers.App1, curlCmd)
res.ExpectFail("Can access to %q when should not (No DNS request to allow the IP)", world1Target)
monitorCMD.ExpectContains("xx drop (Policy denied (L3))")
By("Testing connectivity to %q", world1Target)
monitorCMD.Reset()