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Whitelisting #310

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merged 7 commits into from
Jul 26, 2019
Merged

Whitelisting #310

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00a44f6
generate deepcopy functions + define new crd
aramase Jul 25, 2019
ee46dd5
add crd to known types
aramase Jul 25, 2019
c36a46a
changes to proxy if label in exception
aramase Jul 25, 2019
c0f9e6c
remove image changes
aramase Jul 25, 2019
a8e2e1b
add e2e tests
aramase Jul 26, 2019
46325a8
update fn name
aramase Jul 26, 2019
ee03e9a
fix typo in fn name
aramase Jul 26, 2019
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2 changes: 1 addition & 1 deletion Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -91,7 +91,7 @@ build: clean build-nmi build-mic build-demo build-identity-validator

.PHONY: deepcopy-gen
deepcopy-gen:
deepcopy-gen -i ./pkg/apis/aadpodidentity/v1/ -o ../../../ -O aadpodidentity_deepcopy_generated -p aadpodidentity
deepcopy-gen -i ./pkg/apis/aadpodidentity/v1/ -o . -O aadpodidentity_deepcopy_generated -p aadpodidentity

.PHONY: image-nmi
image-nmi:
Expand Down
2 changes: 1 addition & 1 deletion deploy/infra/deployment-rbac.yaml
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Expand Up @@ -203,4 +203,4 @@ spec:
hostPath:
path: /etc/kubernetes/azure.json
nodeSelector:
beta.kubernetes.io/os: linux
beta.kubernetes.io/os: linux
134 changes: 110 additions & 24 deletions pkg/apis/aadpodidentity/v1/aadpodidentity_deepcopy_generated.go
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41 changes: 38 additions & 3 deletions pkg/apis/aadpodidentity/v1/types.go
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Expand Up @@ -70,6 +70,18 @@ type AzureAssignedIdentity struct {
Status AzureAssignedIdentityStatus `json:"Status"`
}

//AzurePodIdentityException contains the pod selectors for all pods that don't require
// NMI to process and request token on their behalf.

//+k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
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Can you please add a README under the readme directory on how ExceptionList can be used.

type AzurePodIdentityException struct {
metav1.TypeMeta `json:",inline"`
metav1.ObjectMeta `json:"metadata,omitempty"`

Spec AzurePodIdentityExceptionSpec `json:"spec"`
Status AzurePodIdentityExceptionStatus `json:"Status"`
}

/*** Lists ***/
//+k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type AzureIdentityList struct {
Expand All @@ -95,6 +107,14 @@ type AzureAssignedIdentityList struct {
Items []AzureAssignedIdentity `json:"items"`
}

//+k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type AzurePodIdentityExceptionList struct {
metav1.TypeMeta `json:",inline"`
metav1.ListMeta `json:"metadata"`

Items []AzurePodIdentityException `json:"items"`
}

/*** AzureIdentity ***/
//+k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type IdentityType int
Expand Down Expand Up @@ -150,9 +170,10 @@ const (
)

const (
AzureIDResource = "azureidentities"
AzureIDBindingResource = "azureidentitybindings"
AzureAssignedIDResource = "azureassignedidentities"
AzureIDResource = "azureidentities"
AzureIDBindingResource = "azureidentitybindings"
AzureAssignedIDResource = "azureassignedidentities"
AzureIdentityExceptionResource = "azurepodidentityexceptions"
)

// AzureIdentityBindingSpec matches the pod with the Identity.
Expand Down Expand Up @@ -191,3 +212,17 @@ type AzureAssignedIdentityStatus struct {
Status string `json:"status"`
AvailableReplicas int32 `json:"availableReplicas"`
}

// AzurePodIdentityExceptionSpec matches pods with the selector defined.
// If request originates from a pod that matches the selector, nmi will
// proxy the request and send response back without any validation.
type AzurePodIdentityExceptionSpec struct {
metav1.ObjectMeta `json:"metadata,omitempty"`
PodLabels map[string]string `json:"podLabels"`
}

// AzurePodIdentityExceptionStatus ...
type AzurePodIdentityExceptionStatus struct {
metav1.ObjectMeta `json:"metadata,omitempty"`
Status string `json:"status"`
}
58 changes: 49 additions & 9 deletions pkg/crd/crd.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,15 +20,18 @@ import (
"k8s.io/client-go/tools/cache"
)

// Client represents all the watchers and informers
type Client struct {
rest *rest.RESTClient
BindingListWatch *cache.ListWatch
BindingInformer cache.SharedInformer
IDListWatch *cache.ListWatch
IDInformer cache.SharedInformer
AssignedIDListWatch *cache.ListWatch
rest *rest.RESTClient
BindingListWatch *cache.ListWatch
BindingInformer cache.SharedInformer
IDListWatch *cache.ListWatch
IDInformer cache.SharedInformer
AssignedIDListWatch *cache.ListWatch
PodIdentityExceptionListWatch *cache.ListWatch
}

// ClientInt ...
type ClientInt interface {
Start(exit <-chan struct{})
SyncCache(exit <-chan struct{})
Expand All @@ -39,8 +42,10 @@ type ClientInt interface {
ListAssignedIDs() (res *[]aadpodid.AzureAssignedIdentity, err error)
ListIds() (res *[]aadpodid.AzureIdentity, err error)
ListPodIds(podns, podname string) (map[string][]aadpodid.AzureIdentity, error)
ListPodIdentityExceptions(ns string) (res *[]aadpodid.AzurePodIdentityException, err error)
}

// NewCRDClientLite ...
func NewCRDClientLite(config *rest.Config) (crdClient *Client, err error) {
restClient, err := newRestClient(config)
if err != nil {
Expand All @@ -49,13 +54,16 @@ func NewCRDClientLite(config *rest.Config) (crdClient *Client, err error) {
}

assignedIDListWatch := newAssignedIDListWatch(restClient)
podIdentityExceptionListWatch := newPodIdentityExceptionListWatch(restClient)

return &Client{
AssignedIDListWatch: assignedIDListWatch,
rest: restClient,
AssignedIDListWatch: assignedIDListWatch,
PodIdentityExceptionListWatch: podIdentityExceptionListWatch,
rest: restClient,
}, nil
}

// NewCRDClient returns a new crd client and error if any
func NewCRDClient(config *rest.Config, eventCh chan aadpodid.EventType) (crdClient *Client, err error) {
restClient, err := newRestClient(config)
if err != nil {
Expand Down Expand Up @@ -103,7 +111,10 @@ func newRestClient(config *rest.Config) (r *rest.RESTClient, err error) {
&aadpodid.AzureIdentityBinding{},
&aadpodid.AzureIdentityBindingList{},
&aadpodid.AzureAssignedIdentity{},
&aadpodid.AzureAssignedIdentityList{})
&aadpodid.AzureAssignedIdentityList{},
&aadpodid.AzurePodIdentityException{},
&aadpodid.AzurePodIdentityExceptionList{},
)
crdconfig.NegotiatedSerializer = serializer.DirectCodecFactory{
CodecFactory: serializer.NewCodecFactory(s)}

Expand Down Expand Up @@ -182,12 +193,24 @@ func newAssignedIDListWatch(r *rest.RESTClient) *cache.ListWatch {
return cache.NewListWatchFromClient(r, aadpodid.AzureAssignedIDResource, v1.NamespaceAll, fields.Everything())
}

func newPodIdentityExceptionListWatch(r *rest.RESTClient) *cache.ListWatch {
optionsModifier := func(options *v1.ListOptions) {}
return cache.NewFilteredListWatchFromClient(
r,
aadpodid.AzureIdentityExceptionResource,
v1.NamespaceAll,
optionsModifier,
)
}

// Start ...
func (c *Client) Start(exit <-chan struct{}) {
go c.BindingInformer.Run(exit)
go c.IDInformer.Run(exit)
glog.Info("CRD watchers started")
}

// SyncCache synchronizes cache
func (c *Client) SyncCache(exit <-chan struct{}) {
if !cache.WaitForCacheSync(exit) {
panic("Cache could not be synchronized")
Expand Down Expand Up @@ -223,6 +246,7 @@ func (c *Client) CreateAssignedIdentity(assignedIdentity *aadpodid.AzureAssigned
return nil
}

// ListBindings returns a list of azureidentitybindings
func (c *Client) ListBindings() (res *[]aadpodid.AzureIdentityBinding, err error) {
begin := time.Now()

Expand All @@ -235,6 +259,7 @@ func (c *Client) ListBindings() (res *[]aadpodid.AzureIdentityBinding, err error
return &ret.(*aadpodid.AzureIdentityBindingList).Items, nil
}

// ListAssignedIDs returns a list of azureassignedidentities
func (c *Client) ListAssignedIDs() (res *[]aadpodid.AzureAssignedIdentity, err error) {
begin := time.Now()
ret, err := c.AssignedIDListWatch.List(v1.ListOptions{})
Expand All @@ -246,6 +271,7 @@ func (c *Client) ListAssignedIDs() (res *[]aadpodid.AzureAssignedIdentity, err e
return &ret.(*aadpodid.AzureAssignedIdentityList).Items, nil
}

// ListIds returns a list of azureidentities
func (c *Client) ListIds() (res *[]aadpodid.AzureIdentity, err error) {
begin := time.Now()
ret, err := c.IDListWatch.List(v1.ListOptions{})
Expand All @@ -257,6 +283,20 @@ func (c *Client) ListIds() (res *[]aadpodid.AzureIdentity, err error) {
return &ret.(*aadpodid.AzureIdentityList).Items, nil
}

// ListPodIdentityExceptions returns list of azurepodidentityexceptions
func (c *Client) ListPodIdentityExceptions(ns string) (res *[]aadpodid.AzurePodIdentityException, err error) {
begin := time.Now()
ret, err := c.PodIdentityExceptionListWatch.List(v1.ListOptions{
FieldSelector: "metadata.namespace=" + ns,
})
if err != nil {
glog.Error(err)
return nil, err
}
stats.Update(stats.ExceptionList, time.Since(begin))
return &ret.(*aadpodid.AzurePodIdentityExceptionList).Items, nil
}

// ListPodIds - given a pod with pod name space
// returns a map with list of azure identities in each state
func (c *Client) ListPodIds(podns, podname string) (map[string][]aadpodid.AzureIdentity, error) {
Expand Down
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