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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2017-2018 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package builtin_test
import (
"fmt"
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/dirs"
"github.com/snapcore/snapd/interfaces"
"github.com/snapcore/snapd/interfaces/apparmor"
"github.com/snapcore/snapd/interfaces/builtin"
"github.com/snapcore/snapd/interfaces/kmod"
"github.com/snapcore/snapd/interfaces/seccomp"
"github.com/snapcore/snapd/interfaces/udev"
"github.com/snapcore/snapd/snap"
"github.com/snapcore/snapd/snap/snaptest"
"github.com/snapcore/snapd/testutil"
)
type KubernetesSupportInterfaceSuite struct {
iface interfaces.Interface
slotInfo *snap.SlotInfo
slot *interfaces.ConnectedSlot
plugInfo *snap.PlugInfo
plug *interfaces.ConnectedPlug
plugKubeletInfo *snap.PlugInfo
plugKubelet *interfaces.ConnectedPlug
plugKubeproxyInfo *snap.PlugInfo
plugKubeproxy *interfaces.ConnectedPlug
plugKubeAutobindInfo *snap.PlugInfo
plugKubeAutobind *interfaces.ConnectedPlug
plugBadInfo *snap.PlugInfo
plugBad *interfaces.ConnectedPlug
}
const k8sMockPlugSnapInfoYaml = `name: kubernetes-support
version: 0
plugs:
k8s-default:
interface: kubernetes-support
k8s-kubelet:
interface: kubernetes-support
flavor: kubelet
k8s-kubeproxy:
interface: kubernetes-support
flavor: kubeproxy
k8s-autobind-unix:
interface: kubernetes-support
flavor: autobind-unix
k8s-bad:
interface: kubernetes-support
flavor: bad
apps:
default:
plugs: [k8s-default]
kubelet:
plugs: [k8s-kubelet]
kubeproxy:
plugs: [k8s-kubeproxy]
kube-autobind-unix:
plugs: [k8s-autobind-unix]
`
var _ = Suite(&KubernetesSupportInterfaceSuite{
iface: builtin.MustInterface("kubernetes-support"),
})
func (s *KubernetesSupportInterfaceSuite) SetUpTest(c *C) {
s.slotInfo = &snap.SlotInfo{
Snap: &snap.Info{SuggestedName: "core", SnapType: snap.TypeOS},
Name: "kubernetes-support",
Interface: "kubernetes-support",
}
slotAppSet, err := interfaces.NewSnapAppSet(s.slotInfo.Snap, nil)
c.Assert(err, IsNil)
s.slot = interfaces.NewConnectedSlot(s.slotInfo, slotAppSet, nil, nil)
plugSnap := snaptest.MockInfo(c, k8sMockPlugSnapInfoYaml, nil)
plugAppSet, err := interfaces.NewSnapAppSet(plugSnap, nil)
c.Assert(err, IsNil)
s.plugInfo = plugSnap.Plugs["k8s-default"]
s.plug = interfaces.NewConnectedPlug(s.plugInfo, plugAppSet, nil, nil)
s.plugKubeletInfo = plugSnap.Plugs["k8s-kubelet"]
s.plugKubelet = interfaces.NewConnectedPlug(s.plugKubeletInfo, plugAppSet, nil, nil)
s.plugKubeproxyInfo = plugSnap.Plugs["k8s-kubeproxy"]
s.plugKubeproxy = interfaces.NewConnectedPlug(s.plugKubeproxyInfo, plugAppSet, nil, nil)
s.plugKubeAutobindInfo = plugSnap.Plugs["k8s-autobind-unix"]
s.plugKubeAutobind = interfaces.NewConnectedPlug(s.plugKubeAutobindInfo, plugAppSet, nil, nil)
s.plugBadInfo = plugSnap.Plugs["k8s-bad"]
s.plugBad = interfaces.NewConnectedPlug(s.plugBadInfo, plugAppSet, nil, nil)
}
func (s *KubernetesSupportInterfaceSuite) TestName(c *C) {
c.Assert(s.iface.Name(), Equals, "kubernetes-support")
}
func (s *KubernetesSupportInterfaceSuite) TestSanitizeSlot(c *C) {
c.Assert(interfaces.BeforePrepareSlot(s.iface, s.slotInfo), IsNil)
}
func (s *KubernetesSupportInterfaceSuite) TestSanitizePlug(c *C) {
c.Assert(interfaces.BeforePreparePlug(s.iface, s.plugInfo), IsNil)
c.Assert(interfaces.BeforePreparePlug(s.iface, s.plugKubeletInfo), IsNil)
c.Assert(interfaces.BeforePreparePlug(s.iface, s.plugKubeproxyInfo), IsNil)
c.Assert(interfaces.BeforePreparePlug(s.iface, s.plugBadInfo), ErrorMatches, `kubernetes-support plug requires "flavor" to be either "kubelet", "kubeproxy" or "autobind-unix"`)
}
func (s *KubernetesSupportInterfaceSuite) TestKModConnectedPlug(c *C) {
// default should have kubeproxy modules
spec := &kmod.Specification{}
err := spec.AddConnectedPlug(s.iface, s.plug, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.Modules(), DeepEquals, map[string]bool{
"llc": true,
"stp": true,
"ip_vs_rr": true,
"ip_vs_sh": true,
"ip_vs_wrr": true,
"libcrc32c": true,
})
// kubeproxy should have its modules
spec = &kmod.Specification{}
err = spec.AddConnectedPlug(s.iface, s.plugKubeproxy, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.Modules(), DeepEquals, map[string]bool{
"llc": true,
"stp": true,
"ip_vs_rr": true,
"ip_vs_sh": true,
"ip_vs_wrr": true,
"libcrc32c": true,
})
// kubelet shouldn't have anything
spec = &kmod.Specification{}
err = spec.AddConnectedPlug(s.iface, s.plugKubelet, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.Modules(), DeepEquals, map[string]bool{})
}
func (s *KubernetesSupportInterfaceSuite) TestAppArmorConnectedPlug(c *C) {
// default should have kubeproxy, kubelet and autobind rules
spec := apparmor.NewSpecification(s.plug.AppSet())
err := spec.AddConnectedPlug(s.iface, s.plug, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.SecurityTags(), DeepEquals, []string{"snap.kubernetes-support.default"})
c.Check(spec.SnippetForTag("snap.kubernetes-support.default"), testutil.Contains, "# Common rules for running as a kubernetes node\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.default"), testutil.Contains, "# Allow running as the kubelet service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.default"), testutil.Contains, "# Allow running as the kubeproxy service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.default"), testutil.Contains, "# Common rules for kubernetes use of systemd_run\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.default"), testutil.Contains, "# kubelet mount rules\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.default"), testutil.Contains, "# Allow using the 'autobind' feature of bind() (eg, for journald via go-systemd)\n")
c.Check(spec.UsesPtraceTrace(), Equals, true)
// kubeproxy should have its rules and autobind rules
spec = apparmor.NewSpecification(s.plugKubeproxy.AppSet())
err = spec.AddConnectedPlug(s.iface, s.plugKubeproxy, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.SecurityTags(), DeepEquals, []string{"snap.kubernetes-support.kubeproxy"})
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubeproxy"), testutil.Contains, "# Common rules for running as a kubernetes node\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubeproxy"), testutil.Contains, "# Allow running as the kubeproxy service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubeproxy"), Not(testutil.Contains), "# Allow running as the kubelet service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubeproxy"), testutil.Contains, "# Common rules for kubernetes use of systemd_run\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubeproxy"), Not(testutil.Contains), "# kubelet mount rules\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubeproxy"), testutil.Contains, "# Allow using the 'autobind' feature of bind() (eg, for journald via go-systemd)\n")
c.Check(spec.UsesPtraceTrace(), Equals, false)
// kubelet should have its rules and autobind rules
spec = apparmor.NewSpecification(s.plugKubelet.AppSet())
err = spec.AddConnectedPlug(s.iface, s.plugKubelet, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.SecurityTags(), DeepEquals, []string{"snap.kubernetes-support.kubelet"})
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubelet"), testutil.Contains, "# Common rules for running as a kubernetes node\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubelet"), testutil.Contains, "# Allow running as the kubelet service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubelet"), Not(testutil.Contains), "# Allow running as the kubeproxy service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubelet"), testutil.Contains, "# Common rules for kubernetes use of systemd_run\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubelet"), testutil.Contains, "# kubelet mount rules\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubelet"), testutil.Contains, "# Allow using the 'autobind' feature of bind() (eg, for journald via go-systemd)\n")
c.Check(spec.UsesPtraceTrace(), Equals, true)
// kube-autobind-unix should have only its autobind rules
spec = apparmor.NewSpecification(s.plugKubeAutobind.AppSet())
err = spec.AddConnectedPlug(s.iface, s.plugKubeAutobind, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.SecurityTags(), DeepEquals, []string{"snap.kubernetes-support.kube-autobind-unix"})
c.Check(spec.SnippetForTag("snap.kubernetes-support.kube-autobind-unix"), Not(testutil.Contains), "# Common rules for running as a kubernetes node\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kube-autobind-unix"), Not(testutil.Contains), "# Allow running as the kubelet service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kube-autobind-unix"), Not(testutil.Contains), "# Allow running as the kubeproxy service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kube-autobind-unix"), Not(testutil.Contains), "# Common rules for kubernetes use of systemd_run\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kube-autobind-unix"), Not(testutil.Contains), "# kubelet mount rules\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kube-autobind-unix"), testutil.Contains, "# Allow using the 'autobind' feature of bind() (eg, for journald via go-systemd)\n")
c.Check(spec.UsesPtraceTrace(), Equals, false)
}
func (s *KubernetesSupportInterfaceSuite) TestSecCompConnectedPlug(c *C) {
// default should have kubelet rules
spec := seccomp.NewSpecification(s.plug.AppSet())
err := spec.AddConnectedPlug(s.iface, s.plug, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.SecurityTags(), DeepEquals, []string{"snap.kubernetes-support.default"})
c.Check(spec.SnippetForTag("snap.kubernetes-support.default"), testutil.Contains, "# Allow running as the kubelet service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.default"), testutil.Contains, "# Allow using the 'autobind' feature of bind() (eg, for journald).\n")
// kubeproxy should have the autobind rules
spec = seccomp.NewSpecification(s.plugKubeproxy.AppSet())
err = spec.AddConnectedPlug(s.iface, s.plugKubeproxy, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.SecurityTags(), DeepEquals, []string{"snap.kubernetes-support.kubeproxy"})
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubeproxy"), Not(testutil.Contains), "# Allow running as the kubelet service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubeproxy"), testutil.Contains, "# Allow using the 'autobind' feature of bind() (eg, for journald).\n")
// kubelet should have its rules and the autobind rules
spec = seccomp.NewSpecification(s.plugKubelet.AppSet())
err = spec.AddConnectedPlug(s.iface, s.plugKubelet, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.SecurityTags(), DeepEquals, []string{"snap.kubernetes-support.kubelet"})
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubelet"), testutil.Contains, "# Allow running as the kubelet service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kubelet"), testutil.Contains, "# Allow using the 'autobind' feature of bind() (eg, for journald).\n")
// kube-autobind-unix should have the autobind rules
spec = seccomp.NewSpecification(s.plugKubeAutobind.AppSet())
err = spec.AddConnectedPlug(s.iface, s.plugKubeAutobind, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.SecurityTags(), DeepEquals, []string{"snap.kubernetes-support.kube-autobind-unix"})
c.Check(spec.SnippetForTag("snap.kubernetes-support.kube-autobind-unix"), Not(testutil.Contains), "# Allow running as the kubelet service\n")
c.Check(spec.SnippetForTag("snap.kubernetes-support.kube-autobind-unix"), testutil.Contains, "# Allow using the 'autobind' feature of bind() (eg, for journald).\n")
}
func (s *KubernetesSupportInterfaceSuite) TestUDevConnectedPlug(c *C) {
// default should have kubelet rules
spec := udev.NewSpecification(s.plug.AppSet())
err := spec.AddConnectedPlug(s.iface, s.plug, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.Snippets(), HasLen, 2)
c.Assert(spec.Snippets(), testutil.Contains, `# kubernetes-support
KERNEL=="kmsg", TAG+="snap_kubernetes-support_default"`)
c.Assert(spec.Snippets(), testutil.Contains, fmt.Sprintf(`TAG=="snap_kubernetes-support_default", SUBSYSTEM!="module", SUBSYSTEM!="subsystem", RUN+="%v/snap-device-helper $env{ACTION} snap_kubernetes-support_default $devpath $major:$minor"`, dirs.DistroLibExecDir))
// kubeproxy should not have any rules
spec = udev.NewSpecification(s.plugKubeproxy.AppSet())
err = spec.AddConnectedPlug(s.iface, s.plugKubeproxy, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.Snippets(), HasLen, 0)
// kubelet should have only its rules
spec = udev.NewSpecification(s.plugKubelet.AppSet())
err = spec.AddConnectedPlug(s.iface, s.plugKubelet, s.slot)
c.Assert(err, IsNil)
c.Assert(spec.Snippets(), HasLen, 2)
c.Assert(spec.Snippets(), testutil.Contains, `# kubernetes-support
KERNEL=="kmsg", TAG+="snap_kubernetes-support_kubelet"`)
c.Assert(spec.Snippets(), testutil.Contains, fmt.Sprintf(`TAG=="snap_kubernetes-support_kubelet", SUBSYSTEM!="module", SUBSYSTEM!="subsystem", RUN+="%v/snap-device-helper $env{ACTION} snap_kubernetes-support_kubelet $devpath $major:$minor"`, dirs.DistroLibExecDir))
}
func (s *KubernetesSupportInterfaceSuite) TestInterfaces(c *C) {
c.Check(builtin.Interfaces(), testutil.DeepContains, s.iface)
}
func (s *KubernetesSupportInterfaceSuite) TestPermanentPlugServiceSnippets(c *C) {
for _, t := range []struct {
plug *snap.PlugInfo
exp []interfaces.PlugServicesSnippet
}{
{s.plugInfo, []interfaces.PlugServicesSnippet{interfaces.PlugServicesServiceSectionSnippet("Delegate=true")}},
{s.plugKubeletInfo, []interfaces.PlugServicesSnippet{interfaces.PlugServicesServiceSectionSnippet("Delegate=true")}},
{s.plugKubeproxyInfo, []interfaces.PlugServicesSnippet{interfaces.PlugServicesServiceSectionSnippet("Delegate=true")}},
// only autobind-unix flavor does not get Delegate=true
{s.plugKubeAutobindInfo, nil},
} {
snips, err := interfaces.PermanentPlugServiceSnippets(s.iface, t.plug)
c.Assert(err, IsNil)
c.Check(snips, DeepEquals, t.exp)
}
}
|
