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Policies.go
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Policies.go
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// Copyright 2017-2019 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"
"sync"
"time"
"github.com/cilium/cilium/api/v1/models"
"github.com/cilium/cilium/pkg/policy/api"
. "github.com/cilium/cilium/test/ginkgo-ext"
"github.com/cilium/cilium/test/helpers"
"github.com/cilium/cilium/test/helpers/constants"
. "github.com/onsi/gomega"
"github.com/onsi/gomega/types"
"github.com/sirupsen/logrus"
)
const (
// Commands
ping = "ping"
ping6 = "ping6"
http = "http"
http6 = "http6"
httpPrivate = "http_private"
http6Private = "http6_private"
httpPathRewrite = "http_path_rewrite"
http6PathRewrite = "http6_path_rewrite"
// Policy files
policyJSON = "policy.json"
invalidJSON = "invalid.json"
multL7PoliciesJSON = "Policies-l7-multiple.json"
policiesL7JSON = "Policies-l7-simple.json"
policiesL3JSON = "Policies-l3-policy.json"
policiesL4Json = "Policies-l4-policy.json"
policiesL3DependentL7EgressJSON = "Policies-l3-dependent-l7-egress.json"
policiesReservedInitJSON = "Policies-reserved-init.json"
)
var _ = Describe("RuntimePolicies", func() {
var (
vm *helpers.SSHMeta
monitorStop = func() error { return nil }
initContainer string
cleanup = func() { return }
)
BeforeAll(func() {
vm = helpers.InitRuntimeHelper(helpers.Runtime, logger)
// Make sure that Cilium is started with appropriate CLI options
// (specifically to exclude the local addresses that are populated for
// CIDR policy tests).
Expect(vm.SetUpCilium()).To(BeNil())
ExpectCiliumReady(vm)
vm.SampleContainersActions(helpers.Create, helpers.CiliumDockerNetwork)
vm.PolicyDelAll()
initContainer = "initContainer"
areEndpointsReady := vm.WaitEndpointsReady()
Expect(areEndpointsReady).Should(BeTrue(), "Endpoints are not ready after timeout")
})
BeforeEach(func() {
ExpectPolicyEnforcementUpdated(vm, helpers.PolicyEnforcementDefault)
cleanup = func() { return }
})
AfterEach(func() {
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
cleanup()
})
JustBeforeEach(func() {
monitorStop = vm.MonitorStart()
})
JustAfterEach(func() {
vm.ValidateNoErrorsInLogs(CurrentGinkgoTestDescription().Duration)
Expect(monitorStop()).To(BeNil(), "cannot stop monitor command")
})
AfterFailed(func() {
vm.ReportFailed()
})
AfterAll(func() {
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
vm.SampleContainersActions(helpers.Delete, helpers.CiliumDockerNetwork)
vm.CloseSSHClient()
})
pingRequests := []string{ping, ping6}
httpRequestsPublic := []string{http, http6}
httpRequestsPrivate := []string{httpPrivate, http6Private}
httpRequestsPathRewrite := []string{httpPathRewrite, http6PathRewrite}
httpRequests := append(httpRequestsPublic, httpRequestsPrivate...)
httpRequests = append(httpRequests, httpRequestsPathRewrite...)
allRequests := append(pingRequests, httpRequests...)
connectivityTest := func(tests []string, client, server string, expectsSuccess bool) {
var assertFn func() types.GomegaMatcher
if expectsSuccess {
assertFn = BeTrue
} else {
assertFn = BeFalse
}
if client != helpers.Host {
_, err := vm.ContainerInspectNet(client)
ExpectWithOffset(1, err).Should(BeNil(), fmt.Sprintf(
"could not get container %q (client) meta", client))
}
srvIP, err := vm.ContainerInspectNet(server)
ExpectWithOffset(1, err).Should(BeNil(), fmt.Sprintf(
"could not get container %q (server) meta", server))
for _, test := range tests {
var command, commandName, dst, resultName string
switch test {
case ping:
command = helpers.Ping(srvIP[helpers.IPv4])
dst = srvIP[helpers.IPv4]
case ping6:
command = helpers.Ping6(srvIP[helpers.IPv6])
dst = srvIP[helpers.IPv6]
case http, httpPrivate, httpPathRewrite:
dst = srvIP[helpers.IPv4]
case http6, http6Private, http6PathRewrite:
dst = fmt.Sprintf("[%s]", srvIP[helpers.IPv6])
}
switch test {
case ping:
commandName = "ping"
case ping6:
commandName = "ping6"
case http:
commandName = "curl public IPv4 URL on"
command = helpers.CurlFail("http://%s:80/public", dst)
case http6:
commandName = "curl public IPv6 URL on"
command = helpers.CurlFail("http://%s:80/public", dst)
case httpPrivate:
commandName = "curl private IPv4 URL on"
command = helpers.CurlFail("http://%s:80/private", dst)
case http6Private:
commandName = "curl private IPv6 URL on"
command = helpers.CurlFail("http://%s:80/private", dst)
case httpPathRewrite:
commandName = "curl path rewrite IPv4 URL on"
command = helpers.CurlFail("http://%s:80/public/../private", dst)
case http6PathRewrite:
commandName = "curl path rewrite IPv6 URL on"
command = helpers.CurlFail("http://%s:80/public/../private", dst)
}
if expectsSuccess {
resultName = "succeed"
} else {
resultName = "fail"
}
By("%q attempting to %q %q", client, commandName, server)
var res *helpers.CmdRes
if client != helpers.Host {
res = vm.ContainerExec(client, command)
} else {
res = vm.Exec(command)
}
ExpectWithOffset(1, res.WasSuccessful()).Should(assertFn(),
fmt.Sprintf("%q expects %s %s (%s) to %s", client, commandName, server, dst, resultName))
}
}
checkProxyStatistics := func(epID string, reqsFwd, reqsReceived, reqsDenied, respFwd, respReceived int) {
epModel := vm.EndpointGet(epID)
Expect(epModel).To(Not(BeNil()), "nil model returned for endpoint %s", epID)
for _, epProxyStatistics := range epModel.Status.Policy.ProxyStatistics {
if epProxyStatistics.Location == models.ProxyStatisticsLocationEgress {
ExpectWithOffset(1, epProxyStatistics.Statistics.Requests.Forwarded).To(BeEquivalentTo(reqsFwd), "Unexpected number of forwarded requests to proxy")
ExpectWithOffset(1, epProxyStatistics.Statistics.Requests.Received).To(BeEquivalentTo(reqsReceived), "Unexpected number of received requests to proxy")
ExpectWithOffset(1, epProxyStatistics.Statistics.Requests.Denied).To(BeEquivalentTo(reqsDenied), "Unexpected number of denied requests to proxy")
ExpectWithOffset(1, epProxyStatistics.Statistics.Responses.Forwarded).To(BeEquivalentTo(respFwd), "Unexpected number of forwarded responses from proxy")
ExpectWithOffset(1, epProxyStatistics.Statistics.Responses.Received).To(BeEquivalentTo(respReceived), "Unexpected number of received responses from proxy")
}
}
}
It("L3/L4 Checks", func() {
_, err := vm.PolicyImportAndWait(vm.GetFullPath(policiesL3JSON), helpers.HelperTimeout)
Expect(err).Should(BeNil())
//APP1 can connect to all Httpd1
connectivityTest(allRequests, helpers.App1, helpers.Httpd1, true)
//APP2 can't connect to Httpd1
connectivityTest([]string{http}, helpers.App2, helpers.Httpd1, false)
// APP1 can reach using TCP HTTP2
connectivityTest(httpRequestsPublic, helpers.App1, helpers.Httpd2, true)
// APP2 can't reach using TCP to HTTP2
connectivityTest(httpRequestsPublic, helpers.App2, helpers.Httpd2, false)
// APP3 can reach using TCP to HTTP2, but can't ping due to egress rule.
connectivityTest(httpRequestsPublic, helpers.App3, helpers.Httpd2, true)
connectivityTest(pingRequests, helpers.App3, helpers.Httpd2, false)
// APP3 can't reach using TCP to HTTP3
connectivityTest(allRequests, helpers.App3, helpers.Httpd3, false)
// app2 can reach httpd3 for all requests due to l3-only label-based allow policy.
connectivityTest(allRequests, helpers.App2, helpers.Httpd3, true)
// app2 cannot reach httpd2 for all requests.
connectivityTest(allRequests, helpers.App2, helpers.Httpd2, false)
By("Deleting all policies; all tests should succeed")
status := vm.PolicyDelAll()
status.ExpectSuccess()
vm.WaitEndpointsReady()
connectivityTest(allRequests, helpers.App1, helpers.Httpd1, true)
connectivityTest(allRequests, helpers.App2, helpers.Httpd1, true)
})
It("L4Policy Checks", func() {
_, err := vm.PolicyImportAndWait(vm.GetFullPath(policiesL4Json), helpers.HelperTimeout)
Expect(err).Should(BeNil())
for _, app := range []string{helpers.App1, helpers.App2} {
connectivityTest(pingRequests, app, helpers.Httpd1, false)
connectivityTest(httpRequestsPublic, app, helpers.Httpd1, true)
connectivityTest(pingRequests, app, helpers.Httpd2, false)
connectivityTest(httpRequestsPublic, app, helpers.Httpd2, true)
}
connectivityTest(allRequests, helpers.App3, helpers.Httpd1, false)
connectivityTest(pingRequests, helpers.App1, helpers.Httpd3, false)
By("Disabling all the policies. All should work")
vm.PolicyDelAll().ExpectSuccess("cannot delete the policy")
vm.WaitEndpointsReady()
for _, app := range []string{helpers.App1, helpers.App2} {
connectivityTest(allRequests, app, helpers.Httpd1, true)
connectivityTest(allRequests, app, helpers.Httpd2, true)
}
})
It("Checks that traffic is not dropped when L4 policy is installed and deleted", func() {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
srvIP, err := vm.ContainerInspectNet(helpers.Httpd1)
Expect(err).Should(BeNil(), "Cannot get httpd1 server address")
type BackgroundTestAsserts struct {
res *helpers.CmdRes
time time.Time
}
backgroundChecks := []*BackgroundTestAsserts{}
var wg sync.WaitGroup
wg.Add(1)
go func() {
for {
select {
default:
res := vm.ContainerExec(
helpers.App1,
helpers.CurlFail("http://%s/", srvIP[helpers.IPv4]))
assert := &BackgroundTestAsserts{
res: res,
time: time.Now(),
}
backgroundChecks = append(backgroundChecks, assert)
case <-ctx.Done():
wg.Done()
return
}
}
}()
// Sleep a bit to make sure that the goroutine starts.
time.Sleep(50 * time.Millisecond)
_, err = vm.PolicyImportAndWait(vm.GetFullPath(policiesL4Json), helpers.HelperTimeout)
Expect(err).Should(BeNil(), "Cannot install L4 policy")
By("Uninstalling policy")
vm.PolicyDelAll().ExpectSuccess("Cannot delete all policies")
vm.WaitEndpointsReady()
By("Canceling background connections from app2 to httpd1")
cancel()
wg.Wait()
GinkgoPrint("Made %d connections in total", len(backgroundChecks))
Expect(backgroundChecks).ShouldNot(BeEmpty(), "No background connections were made")
for _, check := range backgroundChecks {
check.res.ExpectSuccess("Curl from app2 to httpd1 should work but it failed at %s", check.time)
}
})
It("L7 Checks", func() {
_, err := vm.PolicyImportAndWait(vm.GetFullPath(policiesL7JSON), helpers.HelperTimeout)
Expect(err).Should(BeNil())
By("Simple Ingress")
// app1 can connect to /public, but not to /private.
connectivityTest(httpRequestsPublic, helpers.App1, helpers.Httpd1, true)
connectivityTest(httpRequestsPrivate, helpers.App1, helpers.Httpd1, false)
// app1 can't exploit path rewrite
connectivityTest(httpRequestsPathRewrite, helpers.App1, helpers.Httpd1, false)
// Host can connect to /public, but not to /private.
connectivityTest(httpRequestsPublic, helpers.Host, helpers.Httpd1, true)
connectivityTest(httpRequestsPrivate, helpers.Host, helpers.Httpd1, false)
// Host can't exploit path rewrite
connectivityTest(httpRequestsPathRewrite, helpers.Host, helpers.Httpd1, false)
// app cannot connect to httpd1 because httpd1 only allows ingress from app1.
connectivityTest(httpRequestsPublic, helpers.App2, helpers.Httpd1, false)
By("Simple Egress")
// app2 can connect to public, but no to private
connectivityTest(httpRequestsPublic, helpers.App2, helpers.Httpd2, true)
connectivityTest(httpRequestsPrivate, helpers.App2, helpers.Httpd2, false)
// app2 can't exploit path rewrite
connectivityTest(httpRequestsPathRewrite, helpers.App2, helpers.Httpd2, false)
// TODO (1488) - uncomment when l3-dependent-l7 is merged for egress.
//connectivityTest(httpRequestsPublic, helpers.App3, helpers.Httpd3, true)
//connectivityTest(httpRequestsPrivate, helpers.App3, helpers.Httpd3, false)
//connectivityTest(allRequests, helpers.App3, helpers.Httpd2, false)
By("Disabling all the policies. All should work")
status := vm.PolicyDelAll()
status.ExpectSuccess()
vm.WaitEndpointsReady()
connectivityTest(allRequests, helpers.App1, helpers.Httpd1, true)
connectivityTest(allRequests, helpers.App2, helpers.Httpd1, true)
By("Multiple Ingress")
vm.PolicyDelAll()
_, err = vm.PolicyImportAndWait(vm.GetFullPath(multL7PoliciesJSON), helpers.HelperTimeout)
Expect(err).Should(BeNil())
//APP1 can connnect to public, but no to private
connectivityTest(httpRequestsPublic, helpers.App1, helpers.Httpd1, true)
connectivityTest(httpRequestsPrivate, helpers.App1, helpers.Httpd1, false)
//App2 can't connect
connectivityTest(httpRequestsPublic, helpers.App2, helpers.Httpd1, false)
By("Multiple Egress")
// app2 can connect to /public, but not to /private
connectivityTest(httpRequestsPublic, helpers.App2, helpers.Httpd2, true)
connectivityTest(httpRequestsPrivate, helpers.App2, helpers.Httpd2, false)
By("Disabling all the policies. All should work")
status = vm.PolicyDelAll()
status.ExpectSuccess()
vm.WaitEndpointsReady()
connectivityTest(allRequests, helpers.App1, helpers.Httpd1, true)
connectivityTest(allRequests, helpers.App2, helpers.Httpd1, true)
})
It("Tests Endpoint Connectivity Functions After Daemon Configuration Is Updated", func() {
httpd1DockerNetworking, err := vm.ContainerInspectNet(helpers.Httpd1)
Expect(err).ToNot(HaveOccurred(), "unable to get container networking metadata for %s", helpers.Httpd1)
// Importing a policy to ensure that not only does endpoint connectivity
// work after updating daemon configuration, but that policy works as well.
By("Importing policy and waiting for revision to increase for endpoints")
_, err = vm.PolicyImportAndWait(vm.GetFullPath(policiesL7JSON), helpers.HelperTimeout)
Expect(err).ToNot(HaveOccurred(), "unable to import policy after timeout")
By("Trying to access %s:80/public from %s before daemon configuration is updated (should be allowed by policy)", helpers.Httpd1, helpers.App1)
res := vm.ContainerExec(helpers.App1, helpers.CurlFail("http://%s:80/public", httpd1DockerNetworking[helpers.IPv4]))
res.ExpectSuccess("unable to access %s:80/public from %s (should have worked)", helpers.Httpd1, helpers.App1)
By("Trying to access %s:80/private from %s before daemon configuration is updated (should not be allowed by policy)", helpers.Httpd1, helpers.App1)
res = vm.ContainerExec(helpers.App1, helpers.CurlFail("http://%s:80/private", httpd1DockerNetworking[helpers.IPv4]))
res.ExpectFail("unable to access %s:80/private from %s (should not have worked)", helpers.Httpd1, helpers.App1)
By("Getting configuration for daemon")
daemonDebugConfig, err := vm.ExecCilium("config -o json").Filter("{.Debug}")
Expect(err).ToNot(HaveOccurred(), "Unable to get configuration for daemon")
daemonDebugConfigString := daemonDebugConfig.String()
var daemonDebugConfigSwitched string
switch daemonDebugConfigString {
case "Disabled":
daemonDebugConfigSwitched = "Enabled"
case "Enabled":
daemonDebugConfigSwitched = "Disabled"
default:
Fail(fmt.Sprintf("invalid configuration value for daemon: Debug=%s", daemonDebugConfigString))
}
currentRev, err := vm.PolicyGetRevision()
Expect(err).ToNot(HaveOccurred(), "unable to get policy revision")
// TODO: would be a good idea to factor out daemon configuration updates
// into a function in the future.
By("Changing daemon configuration from Debug=%s to Debug=%s to induce policy recalculation for endpoints", daemonDebugConfigString, daemonDebugConfigSwitched)
res = vm.ExecCilium(fmt.Sprintf("config Debug=%s", daemonDebugConfigSwitched))
res.ExpectSuccess("unable to change daemon configuration")
By("Getting policy revision after daemon configuration change")
revAfterConfig, err := vm.PolicyGetRevision()
Expect(err).ToNot(HaveOccurred(), "unable to get policy revision")
Expect(revAfterConfig).To(BeNumerically(">=", currentRev+1))
By("Waiting for policy revision to increase after daemon configuration change")
res = vm.PolicyWait(revAfterConfig)
res.ExpectSuccess("policy revision was not bumped after daemon configuration changes")
By("Changing daemon configuration back from Debug=%s to Debug=%s", daemonDebugConfigSwitched, daemonDebugConfigString)
res = vm.ExecCilium(fmt.Sprintf("config Debug=%s", daemonDebugConfigString))
res.ExpectSuccess("unable to change daemon configuration")
By("Getting policy revision after daemon configuration change")
revAfterSecondConfig, err := vm.PolicyGetRevision()
Expect(err).To(BeNil())
Expect(revAfterSecondConfig).To(BeNumerically(">=", revAfterConfig+1))
By("Waiting for policy revision to increase after daemon configuration change")
res = vm.PolicyWait(revAfterSecondConfig)
res.ExpectSuccess("policy revision was not bumped after daemon configuration changes")
By("Trying to access %s:80/public from %s after daemon configuration was updated (should be allowed by policy)", helpers.Httpd1, helpers.App1)
res = vm.ContainerExec(helpers.App1, helpers.CurlFail("http://%s:80/public", httpd1DockerNetworking[helpers.IPv4]))
res.ExpectSuccess("unable to access %s:80/public from %s (should have worked)", helpers.Httpd1, helpers.App1)
By("Trying to access %s:80/private from %s after daemon configuration is updated (should not be allowed by policy)", helpers.Httpd1, helpers.App1)
res = vm.ContainerExec(helpers.App1, helpers.CurlFail("http://%s:80/private", httpd1DockerNetworking[helpers.IPv4]))
res.ExpectFail("unable to access %s:80/private from %s (should not have worked)", helpers.Httpd1, helpers.App1)
})
It("L3-Dependent L7 Egress", func() {
_, err := vm.PolicyImportAndWait(vm.GetFullPath(policiesL3DependentL7EgressJSON), helpers.HelperTimeout)
Expect(err).Should(BeNil(), "unable to import %s", policiesL3DependentL7EgressJSON)
endpointIDS, err := vm.GetEndpointsIds()
Expect(err).To(BeNil(), "Unable to get IDs of endpoints")
app3EndpointID, exists := endpointIDS[helpers.App3]
Expect(exists).To(BeTrue(), "Expected endpoint ID to exist for %s", helpers.App3)
connectivityTest(httpRequestsPublic, helpers.Host, helpers.Httpd2, true)
connectivityTest(httpRequestsPublic, helpers.App3, helpers.Httpd1, true)
// Since policy allows connectivity on /public to httpd1 from app3, we
// expect:
// * two requests to get received by the proxy because connectivityTest
// connects via http / http6.
// * two requests to get forwarded by the proxy because policy allows
// connectivity via http / http6.
// * two corresponding responses forwarded / received to the aforementioned
// requests due to policy allowing connectivity via http / http6.
checkProxyStatistics(app3EndpointID, 2, 2, 0, 2, 2)
connectivityTest(httpRequestsPrivate, helpers.App3, helpers.Httpd1, false)
// Since policy does not allow connectivity on /private to httpd1 from app3, we expect:
// * two requests denied due to connectivity not being allowed via http / http6
// * the count for requests forwarded, and responses forwarded / received to be the same
// as from the prior test since the requests were denied, and thus no new requests
// were forwarded, and no new responses forwarded nor received.
checkProxyStatistics(app3EndpointID, 2, 4, 2, 2, 2)
connectivityTest(httpRequestsPublic, helpers.App3, helpers.Httpd2, true)
// Since policy allows connectivity on L3 from app3 to httpd2, we expect:
// * two more requests to get received by the proxy because even though
// only L3 policy applies for connectivity from app3 to httpd2, because
// app3 has L7 policy applied to it, all traffic goes through the proxy.
// * two more requests to get forwarded by the proxy because policy allows
// app3 to talk to httpd2.
// * no increase in requests denied by the proxy.
// * two more corresponding responses forwarded / received to the aforementioned requests due to policy
// allowing connectivity via http / http6.
checkProxyStatistics(app3EndpointID, 4, 6, 2, 4, 4)
connectivityTest(httpRequestsPrivate, helpers.App3, helpers.Httpd2, true)
// Since policy allows connectivity on L3 from app3 to httpd2, we expect:
// * two more requests to get received by the proxy because even though
// only L3 policy applies for connectivity from app3 to httpd2, because
// app3 has L7 policy applied to it, all traffic goes through the proxy.
// * two more requests to get forwarded by the proxy because policy allows
// app3 to talk to httpd2, even though it's restricted on L7 for connectivity
// to httpd1 from app3. This is what tests L3-dependent L7 policy is applied
// correctly.
// * no increase in requests denied by the proxy.
// * two more corresponding responses forwarded / received to the aforementioned requests due to policy
// allowing connectivity via http / http6.
checkProxyStatistics(app3EndpointID, 6, 8, 2, 6, 6)
})
It("Checks CIDR L3 Policy", func() {
ipv4OtherHost := "192.168.254.111"
ipv4OtherNet := "99.11.0.0/16"
httpd2Label := "id.httpd2"
httpd1Label := "id.httpd1"
app3Label := "id.app3"
logger.WithFields(logrus.Fields{
"IPv4_host": helpers.FakeIPv4WorldAddress,
"IPv4_other_host": ipv4OtherHost,
"IPv4_other_net": ipv4OtherNet,
"IPv6_host": helpers.FakeIPv6WorldAddress}).
Info("VM IP address configuration")
// If the pseudo host IPs have not been removed since the last run but
// Cilium was restarted, the IPs may have been picked up as valid host
// IPs. Remove them from the list so they are not regarded as localhost
// entries.
// Don't care about success or failure as the BPF endpoint may not even be
// present; this is best-effort.
_ = vm.ExecCilium(fmt.Sprintf("bpf endpoint delete %s", helpers.FakeIPv4WorldAddress))
_ = vm.ExecCilium(fmt.Sprintf("bpf endpoint delete %s", helpers.FakeIPv6WorldAddress))
httpd1DockerNetworking, err := vm.ContainerInspectNet(helpers.Httpd1)
Expect(err).Should(BeNil(), fmt.Sprintf(
"could not get container %s Docker networking", helpers.Httpd1))
ipv6Prefix := fmt.Sprintf("%s/112", httpd1DockerNetworking["IPv6Gateway"])
ipv4Address := httpd1DockerNetworking[helpers.IPv4]
// Get prefix of node-local endpoints.
By("Getting IPv4 and IPv6 prefixes of node-local endpoints")
getIpv4Prefix := vm.Exec(fmt.Sprintf(`expr %s : '\([0-9]*\.[0-9]*\.\)'`, ipv4Address)).SingleOut()
ipv4Prefix := fmt.Sprintf("%s0.0/16", getIpv4Prefix)
getIpv4PrefixExcept := vm.Exec(fmt.Sprintf(`expr %s : '\([0-9]*\.[0-9]*\.\)'`, ipv4Address)).SingleOut()
ipv4PrefixExcept := fmt.Sprintf(`%s0.0/18`, getIpv4PrefixExcept)
By("IPV6 Prefix: %q", ipv6Prefix)
By("IPV4 Address Endpoint: %q", ipv4Address)
By("IPV4 Prefix: %q", ipv4Prefix)
By("IPV4 Prefix Except: %q", ipv4PrefixExcept)
By("Setting PolicyEnforcement to always enforce (default-deny)")
ExpectPolicyEnforcementUpdated(vm, helpers.PolicyEnforcementAlways)
// Delete the pseudo-host IPs that we added to localhost after test
// finishes. Don't care about success; this is best-effort.
cleanup = func() {
_ = vm.RemoveIPFromLoopbackDevice(fmt.Sprintf("%s/32", helpers.FakeIPv4WorldAddress))
_ = vm.RemoveIPFromLoopbackDevice(fmt.Sprintf("%s/128", helpers.FakeIPv6WorldAddress))
}
By("Adding Pseudo-Host IPs to localhost")
vm.AddIPToLoopbackDevice(fmt.Sprintf("%s/32", helpers.FakeIPv4WorldAddress)).ExpectSuccess("Unable to add %s to pseudo-host IP to localhost", helpers.FakeIPv4WorldAddress)
vm.AddIPToLoopbackDevice(fmt.Sprintf("%s/128", helpers.FakeIPv6WorldAddress)).ExpectSuccess("Unable to add %s to pseudo-host IP to localhost", helpers.FakeIPv6WorldAddress)
By("Pinging host IPv4 from httpd2 (should NOT work due to default-deny PolicyEnforcement mode)")
res := vm.ContainerExec(helpers.Httpd2, helpers.Ping(helpers.FakeIPv4WorldAddress))
res.ExpectFail("Unexpected success pinging host (%s) from %s", helpers.FakeIPv4WorldAddress, helpers.Httpd2)
By("Importing L3 CIDR Policy for IPv4 Egress Allowing Egress to %q, %q from %q", ipv4OtherHost, ipv4OtherHost, httpd2Label)
script := fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%s":""}},
"egress":
[{
"toCIDR": [
"%s/24",
"%s/20"
]
}]
}]`, httpd2Label, ipv4OtherHost, ipv4OtherHost)
_, err = vm.PolicyRenderAndImport(script)
Expect(err).To(BeNil(), "Unable to import policy: %s", err)
res = vm.ContainerExec(helpers.Httpd2, helpers.Ping(helpers.FakeIPv4WorldAddress))
res.ExpectSuccess("Unexpected failure pinging host (%s) from %s", helpers.FakeIPv4WorldAddress, helpers.Httpd2)
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
By("Pinging host IPv6 from httpd2 (should NOT work because we did not specify IPv6 CIDR of host as part of previously imported policy)")
res = vm.ContainerExec(helpers.Httpd2, helpers.Ping6(helpers.FakeIPv6WorldAddress))
res.ExpectFail("Unexpected success pinging host (%s) from %s", helpers.FakeIPv6WorldAddress, helpers.Httpd2)
By("Importing L3 CIDR Policy for IPv6 Egress")
script = fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%s":""}},
"egress": [{
"toCIDR": [
"%s"
]
}]
}]`, httpd2Label, helpers.FakeIPv6WorldAddress)
_, err = vm.PolicyRenderAndImport(script)
Expect(err).To(BeNil(), "Unable to import policy: %s", err)
By("Pinging host IPv6 from httpd2 (should work because policy allows IPv6 CIDR %q)", helpers.FakeIPv6WorldAddress)
res = vm.ContainerExec(helpers.Httpd2, helpers.Ping6(helpers.FakeIPv6WorldAddress))
res.ExpectSuccess("Unexpected failure pinging host (%s) from %s", helpers.FakeIPv6WorldAddress, helpers.Httpd2)
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
// This test case checks that ping works even without explicit CIDR policies
// imported.
By("Importing L3 Label-Based Policy Allowing traffic from httpd2 to httpd1")
script = fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%[1]s":""}},
"ingress": [{
"fromEndpoints": [
{"matchLabels":{"%[2]s":""}}
]
}]
},
{
"endpointSelector": {"matchLabels":{"%[2]s":""}},
"egress": [{
"toEndpoints": [
{"matchLabels":{"%[1]s":""}}
]
}]
}]`, httpd1Label, httpd2Label)
_, err = vm.PolicyRenderAndImport(script)
Expect(err).To(BeNil(), "Unable to import policy: %s", err)
By("Pinging httpd1 IPV4 from httpd2 (should work because we allowed traffic to httpd1 labels from httpd2 labels)")
res = vm.ContainerExec(helpers.Httpd2, helpers.Ping(httpd1DockerNetworking[helpers.IPv4]))
res.ExpectSuccess("Unexpected failure pinging %s (%s) from %s", helpers.Httpd1, httpd1DockerNetworking[helpers.IPv4], helpers.Httpd2)
By("Pinging httpd1 IPv6 from httpd2 (should work because we allowed traffic to httpd1 labels from httpd2 labels)")
res = vm.ContainerExec(helpers.Httpd2, helpers.Ping6(httpd1DockerNetworking[helpers.IPv6]))
res.ExpectSuccess("Unexpected failure pinging %s (%s) from %s", helpers.Httpd1, httpd1DockerNetworking[helpers.IPv6], helpers.Httpd2)
By("Pinging httpd1 IPv4 from app3 (should NOT work because app3 hasn't been whitelisted to communicate with httpd1)")
res = vm.ContainerExec(helpers.App3, helpers.Ping(helpers.Httpd1))
res.ExpectFail("Unexpected success pinging %s IPv4 from %s", helpers.Httpd1, helpers.App3)
By("Pinging httpd1 IPv6 from app3 (should NOT work because app3 hasn't been whitelisted to communicate with httpd1)")
res = vm.ContainerExec(helpers.App3, helpers.Ping6(helpers.Httpd1))
res.ExpectFail("Unexpected success pinging %s IPv6 from %s", helpers.Httpd1, helpers.App3)
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
// Checking combined policy allowing traffic from IPv4 and IPv6 CIDR ranges.
By("Importing Policy Allowing Ingress From %q --> %q And From CIDRs %q, %q", helpers.Httpd2, helpers.Httpd1, ipv4Prefix, ipv6Prefix)
script = fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%[1]s":""}},
"ingress": [{
"fromEndpoints": [
{"matchLabels":{"%[2]s":""}}
]
}, {
"fromCIDR": [
"%s",
"%s"
]
}]
},
{
"endpointSelector": {"matchLabels":{"%[2]s":""}},
"egress": [{
"toEndpoints": [
{"matchLabels":{"%[1]s":""}}
]
}]
}]`, httpd1Label, httpd2Label, ipv4Prefix, ipv6Prefix)
_, err = vm.PolicyRenderAndImport(script)
Expect(err).To(BeNil(), "Unable to import policy: %s", err)
By("Pinging httpd1 IPV4 from httpd2 (should work because we allowed traffic to httpd1 labels from httpd2 labels)")
res = vm.ContainerExec(helpers.Httpd2, helpers.Ping(httpd1DockerNetworking[helpers.IPv4]))
res.ExpectSuccess("Unexpected failure pinging %s (%s) from %s", helpers.Httpd1, httpd1DockerNetworking[helpers.IPv4], helpers.Httpd2)
By("Pinging httpd1 IPv6 from httpd2 (should work because we allowed traffic to httpd1 labels from httpd2 labels)")
res = vm.ContainerExec(helpers.Httpd2, helpers.Ping6(httpd1DockerNetworking[helpers.IPv6]))
res.ExpectSuccess("Unexpected failure pinging %s (%s) from %s", helpers.Httpd1, httpd1DockerNetworking[helpers.IPv6], helpers.Httpd2)
By("Pinging httpd1 IPv4 %q from app3 (shouldn't work because CIDR policies don't apply to endpoint-endpoint communication)", ipv4Prefix)
res = vm.ContainerExec(helpers.App3, helpers.Ping(helpers.Httpd1))
res.ExpectFail("Unexpected success pinging %s IPv4 from %s", helpers.Httpd1, helpers.App3)
By("Pinging httpd1 IPv6 %q from app3 (shouldn't work because CIDR policies don't apply to endpoint-endpoint communication)", ipv6Prefix)
res = vm.ContainerExec(helpers.App3, helpers.Ping6(helpers.Httpd1))
res.ExpectFail("Unexpected success pinging %s IPv6 from %s", helpers.Httpd1, helpers.App3)
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
// Make sure that combined label-based and CIDR-based policy works.
By("Importing Policy Allowing Ingress From %s --> %s And From CIDRs %s", helpers.Httpd2, helpers.Httpd1, ipv4OtherNet)
script = fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%[1]s":""}},
"ingress": [{
"fromEndpoints": [
{"matchLabels":{"%s":""}}
]
}, {
"fromCIDR": [
"%s"
]
}]
},
{
"endpointSelector": {"matchLabels":{"%s":""}},
"egress": [{
"toEndpoints": [
{"matchLabels":{"%[1]s":""}}
]
}]
}]`, httpd1Label, httpd2Label, ipv4OtherNet, app3Label)
_, err = vm.PolicyRenderAndImport(script)
Expect(err).To(BeNil(), "Unable to import policy: %s", err)
By("Pinging httpd1 IPv4 from app3 (should NOT work because we only allow traffic from %q to %q)", httpd2Label, httpd1Label)
res = vm.ContainerExec(helpers.App3, helpers.Ping(helpers.Httpd1))
res.ExpectFail("Unexpected success pinging %s IPv4 from %s", helpers.Httpd1, helpers.App3)
By("Pinging httpd1 IPv6 from app3 (should NOT work because we only allow traffic from %q to %q)", httpd2Label, httpd1Label)
res = vm.ContainerExec(helpers.App3, helpers.Ping6(helpers.Httpd1))
res.ExpectFail("Unexpected success pinging %s IPv6 from %s", helpers.Httpd1, helpers.App3)
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
By("Testing CIDR Exceptions in Cilium Policy")
By("Importing Policy Allowing Ingress From %q --> %q And From CIDRs %q Except %q", helpers.Httpd2, helpers.Httpd1, ipv4Prefix, ipv4PrefixExcept)
script = fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%s":""}},
"ingress": [{
"fromEndpoints": [
{"matchLabels":{"%s":""}}
]
}, {
"fromCIDRSet": [ {
"cidr": "%s",
"except": [
"%s"
]
}
]
}]
}]`, httpd1Label, httpd2Label, ipv4Prefix, ipv4PrefixExcept)
_, err = vm.PolicyRenderAndImport(script)
Expect(err).To(BeNil(), "Unable to import policy: %s", err)
})
It("Extended HTTP Methods tests", func() {
// This also tests L3-dependent L7.
httpMethods := []string{"GET", "POST"}
TestMethodPolicy := func(method string) {
vm.PolicyDelAll().ExpectSuccess("Cannot delete all policies")
policy := `
[{
"endpointSelector": {"matchLabels": {"id.httpd1": ""}},
"ingress": [{
"fromEndpoints": [{"matchLabels": {"id.app1": ""}}],
"toPorts": [{
"ports": [{"port": "80", "protocol": "tcp"}],
"rules": {
"HTTP": [{
"method": "%[1]s",
"path": "/public"
}]
}
}]
}]
},{
"endpointSelector": {"matchLabels": {"id.httpd1": ""}},
"ingress": [{
"fromEndpoints": [{"matchLabels": {"id.app2": ""}}],
"toPorts": [{
"ports": [{"port": "80", "protocol": "tcp"}],
"rules": {
"HTTP": [{
"method": "%[1]s",
"path": "/public",
"headers": ["X-Test: True"]
}]
}
}]
}]
}]`
_, err := vm.PolicyRenderAndImport(fmt.Sprintf(policy, method))
Expect(err).To(BeNil(), "Cannot import policy for %q", method)
srvIP, err := vm.ContainerInspectNet(helpers.Httpd1)
Expect(err).Should(BeNil(), "could not get container %q meta", helpers.Httpd1)
dest := helpers.CurlFail("http://%s/public -X %s", srvIP[helpers.IPv4], method)
destHeader := helpers.CurlFail("http://%s/public -H 'X-Test: True' -X %s",
srvIP[helpers.IPv4], method)
vm.ContainerExec(helpers.App1, dest).ExpectSuccess(
"%q cannot http request to Public", helpers.App1)
vm.ContainerExec(helpers.App2, dest).ExpectFail(
"%q can http request to Public", helpers.App2)
vm.ContainerExec(helpers.App2, destHeader).ExpectSuccess(
"%q cannot http request to Public", helpers.App2)
vm.ContainerExec(helpers.App1, destHeader).ExpectSuccess(
"%q can http request to Public", helpers.App1)
vm.ContainerExec(helpers.App3, destHeader).ExpectFail(
"%q can http request to Public", helpers.App3)
vm.ContainerExec(helpers.App3, dest).ExpectFail(
"%q can http request to Public", helpers.App3)
}
for _, method := range httpMethods {
By("Testing method %q", method)
TestMethodPolicy(method)
}
})
It("Tests Egress To World", func() {
googleDNS := "8.8.8.8"
googleHTTP := "google.com"
numberOfTries := 5
maxNumberOffFailures := 1
checkEgressToWorld := func() {
res := vm.ContainerExec(helpers.App1, helpers.Ping(helpers.App2))
ExpectWithOffset(2, res).ShouldNot(helpers.CMDSuccess(),
"unexpectedly able to ping %q", helpers.App2)
By("Testing egress access to the world from %s", helpers.App1)
pingFailures := 0
curlFailures := 0
for i := 0; i < numberOfTries; i++ {
res := vm.ContainerExec(helpers.App1, helpers.Ping(googleDNS))
if !res.WasSuccessful() {
pingFailures++
}
res = vm.ContainerExec(helpers.App1, helpers.CurlFail("-4 http://%s", googleHTTP))
if !res.WasSuccessful() {
curlFailures++
}
// If no failures, let's skip the next ones.
if (curlFailures + pingFailures) == 0 {
break
}
}
ExpectWithOffset(2, pingFailures).To(BeNumerically("<=", maxNumberOffFailures),
"%d of %d pings to %q failed", pingFailures, maxNumberOffFailures, googleDNS)
ExpectWithOffset(2, curlFailures).To(BeNumerically("<=", maxNumberOffFailures),
"%d of %d HTTP request to %q failed",
pingFailures, maxNumberOffFailures, googleHTTP)
}
setupPolicyAndTestEgressToWorld := func(policy string) {
_, err := vm.PolicyRenderAndImport(policy)
ExpectWithOffset(1, err).To(BeNil(), "Unable to import policy: %s\n%s", err, policy)
areEndpointsReady := vm.WaitEndpointsReady()
ExpectWithOffset(1, areEndpointsReady).Should(BeTrue(), "Endpoints are not ready after timeout")
checkEgressToWorld()
}
// Set policy enforcement to default deny so that we can do negative tests
// before importing policy
ExpectPolicyEnforcementUpdated(vm, helpers.PolicyEnforcementAlways)
failedPing := vm.ContainerExec(helpers.App1, helpers.Ping(googleDNS))
failedPing.ExpectFail("unexpectedly able to ping %s", googleDNS)
By("testing basic egress to world")
app1Label := fmt.Sprintf("id.%s", helpers.App1)
policy := fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%s":""}},
"egress": [{
"toEntities": [
"%s"
]
}]
}]`, app1Label, api.EntityWorld)
setupPolicyAndTestEgressToWorld(policy)
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
By("testing egress to world with all entity")
policy = fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%s":""}},
"egress": [{
"toEntities": [
"%s"
]
}]
}]`, app1Label, api.EntityAll)
setupPolicyAndTestEgressToWorld(policy)
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
By("testing basic egress to 0.0.0.0/0")
policy = fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%s":""}},
"egress": [{
"toCIDR": [
"0.0.0.0/0"
]
}]
}]`, app1Label)
setupPolicyAndTestEgressToWorld(policy)
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
By("testing that in-cluster L7 doesn't affect egress L3")
app2Label := fmt.Sprintf("id.%s", helpers.App2)
policy = fmt.Sprintf(`
[{
"endpointSelector": {"matchLabels":{"%s":""}},
"egress": [{
"toEntities": [
"%s"
]
}, {
"toEndpoints": [{"matchLabels": {"%s": ""}}],
"toPorts": [{
"ports": [{"port": "80", "protocol": "tcp"}],
"rules": {
"HTTP": [{
"method": "GET",
"path": "/nowhere"
}]
}
}]
}]
}]`, app1Label, api.EntityWorld, app2Label)
setupPolicyAndTestEgressToWorld(policy)
vm.PolicyDelAll().ExpectSuccess("Unable to delete all policies")
})
It("Test egress with L7 policy to outside cluster", func() {
target := "http://cilium.io"
res := vm.ContainerExec(helpers.App1, helpers.CurlFail(target))
res.ExpectSuccess("Cannot connect without policy")
policy := `
[
{
"endpointSelector": {
"matchLabels": {"container:id.app1": ""}
},
"egress": [
{
"toPorts": [{
"ports":[{"port": "53", "protocol": "ANY"}],
"rules": {
"dns": [
{"matchPattern": "*"}
]
}
}]
},
{