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status.go
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status.go
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package mtls
import (
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/labels"
"github.com/kiali/kiali/business/checkers/common"
"github.com/kiali/kiali/kubernetes"
)
const (
MTLSEnabled = "MTLS_ENABLED"
MTLSPartiallyEnabled = "MTLS_PARTIALLY_ENABLED"
MTLSNotEnabled = "MTLS_NOT_ENABLED"
MTLSDisabled = "MTLS_DISABLED"
)
type MtlsStatus struct {
Namespace string
PeerAuthentications []kubernetes.IstioObject
DestinationRules []kubernetes.IstioObject
MatchingLabels labels.Labels
Services []v1.Service
AutoMtlsEnabled bool
AllowPermissive bool
}
type TlsStatus struct {
DestinationRuleStatus string
PeerAuthenticationStatus string
OverallStatus string
}
func (m MtlsStatus) hasPeerAuthnNamespacemTLSDefinition() string {
for _, p := range m.PeerAuthentications {
if _, mode := kubernetes.PeerAuthnHasMTLSEnabled(p); mode != "" {
return mode
}
}
return ""
}
func (m MtlsStatus) hasDesinationRuleEnablingNamespacemTLS() string {
for _, dr := range m.DestinationRules {
if _, mode := kubernetes.DestinationRuleHasNamespaceWideMTLSEnabled(m.Namespace, dr); mode != "" {
return mode
}
}
return ""
}
// Returns the mTLS status at workload level (matching the m.MatchingLabels)
func (m MtlsStatus) WorkloadMtlsStatus() string {
for _, pa := range m.PeerAuthentications {
selectorLabels := common.GetSelectorLabels(pa)
if selectorLabels == nil {
continue
}
selector := labels.Set(selectorLabels).AsSelector()
match := selector.Matches(m.MatchingLabels)
if !match {
continue
}
_, mode := kubernetes.PeerAuthnMTLSMode(pa)
if mode == "STRICT" {
return MTLSEnabled
} else if mode == "DISABLE" {
return MTLSDisabled
} else if mode == "PERMISSIVE" {
if len(m.DestinationRules) == 0 {
return MTLSNotEnabled
} else {
// Filter DR that applies to the Services matching with the selector
// Fetch hosts from DRs and its mtls mode [details, ISTIO_STATUS]
// Filter Svc and extract its workloads selectors
filteredSvcs := kubernetes.FilterServicesForSelector(selector, m.Services)
for _, svc := range filteredSvcs {
filteredDrs := kubernetes.FilterDestinationRules(m.DestinationRules, svc.Namespace, svc.Name)
for _, dr := range filteredDrs {
enabled, mode := kubernetes.DestinationRuleHasMTLSEnabled(dr)
if enabled || mode == "MUTUAL" {
return MTLSEnabled
} else if mode == "DISABLE" {
return MTLSDisabled
}
}
}
return MTLSNotEnabled
}
}
}
return MTLSNotEnabled
}
func (m MtlsStatus) NamespaceMtlsStatus() TlsStatus {
drStatus := m.hasDesinationRuleEnablingNamespacemTLS()
paStatus := m.hasPeerAuthnNamespacemTLSDefinition()
return m.finalStatus(drStatus, paStatus)
}
func (m MtlsStatus) finalStatus(drStatus, paStatus string) TlsStatus {
finalStatus := MTLSPartiallyEnabled
mtlsEnabled := drStatus == "ISTIO_MUTUAL" || drStatus == "MUTUAL" || (drStatus == "" && m.AutoMtlsEnabled)
mtlsDisabled := drStatus == "DISABLE" || (drStatus == "" && m.AutoMtlsEnabled)
if (paStatus == "STRICT" || (paStatus == "PERMISSIVE" && m.AllowPermissive)) && mtlsEnabled {
finalStatus = MTLSEnabled
} else if paStatus == "DISABLE" && mtlsDisabled {
finalStatus = MTLSDisabled
} else if paStatus == "" && drStatus == "" {
finalStatus = MTLSNotEnabled
}
return TlsStatus{
DestinationRuleStatus: drStatus,
PeerAuthenticationStatus: paStatus,
OverallStatus: finalStatus,
}
}
func (m MtlsStatus) MeshMtlsStatus() TlsStatus {
drStatus := m.hasDestinationRuleMeshTLSDefinition()
paStatus := m.hasPeerAuthnMeshTLSDefinition()
return TlsStatus{
DestinationRuleStatus: drStatus,
PeerAuthenticationStatus: paStatus,
OverallStatus: m.OverallMtlsStatus(TlsStatus{}, m.finalStatus(drStatus, paStatus)),
}
}
func (m MtlsStatus) hasPeerAuthnMeshTLSDefinition() string {
for _, mp := range m.PeerAuthentications {
if _, mode := kubernetes.PeerAuthnHasMTLSEnabled(mp); mode != "" {
return mode
}
}
return ""
}
func (m MtlsStatus) hasDestinationRuleMeshTLSDefinition() string {
for _, dr := range m.DestinationRules {
if _, mode := kubernetes.DestinationRuleHasMTLSEnabledForHost("*.local", dr); mode != "" {
return mode
}
}
return ""
}
func (m MtlsStatus) OverallMtlsStatus(nsStatus, meshStatus TlsStatus) string {
var status = MTLSPartiallyEnabled
if nsStatus.hasDefinedTls() {
status = nsStatus.OverallStatus
} else if nsStatus.hasPartialTlsConfig() {
status = m.inheritedOverallStatus(nsStatus, meshStatus)
} else if meshStatus.hasDefinedTls() {
status = meshStatus.OverallStatus
} else if meshStatus.hasNoConfig() {
status = MTLSNotEnabled
} else if meshStatus.hasPartialDisabledConfig() {
status = MTLSDisabled
} else if meshStatus.hasHalfTlsConfigDefined(m.AutoMtlsEnabled, m.AllowPermissive) {
status = MTLSEnabled
} else if !m.AutoMtlsEnabled && meshStatus.hasPartialTlsConfig() {
status = MTLSPartiallyEnabled
}
return status
}
func (m MtlsStatus) inheritedOverallStatus(nsStatus, meshStatus TlsStatus) string {
var partialDRStatus, partialPAStatus = nsStatus.DestinationRuleStatus, nsStatus.PeerAuthenticationStatus
if nsStatus.DestinationRuleStatus == "" {
partialDRStatus = meshStatus.DestinationRuleStatus
}
if nsStatus.PeerAuthenticationStatus == "" {
partialPAStatus = meshStatus.PeerAuthenticationStatus
}
return m.OverallMtlsStatus(TlsStatus{},
m.finalStatus(partialDRStatus, partialPAStatus),
)
}
func (t TlsStatus) hasDefinedTls() bool {
return t.OverallStatus == MTLSEnabled || t.OverallStatus == MTLSDisabled
}
func (t TlsStatus) hasPartialTlsConfig() bool {
return t.OverallStatus == MTLSPartiallyEnabled
}
func (t TlsStatus) hasHalfTlsConfigDefined(autoMtls, allowPermissive bool) bool {
defined := false
if autoMtls {
defined = t.PeerAuthenticationStatus == "STRICT" && t.DestinationRuleStatus == "" ||
(t.DestinationRuleStatus == "ISTIO_MUTUAL" || t.DestinationRuleStatus == "MUTUAL") && t.PeerAuthenticationStatus == ""
if !defined && allowPermissive {
defined = t.PeerAuthenticationStatus == "PERMISSIVE" && t.DestinationRuleStatus == ""
}
}
return defined
}
func (t TlsStatus) hasNoConfig() bool {
return t.PeerAuthenticationStatus == "" && t.DestinationRuleStatus == ""
}
func (t TlsStatus) hasPartialDisabledConfig() bool {
return t.PeerAuthenticationStatus == "DISABLE" && t.DestinationRuleStatus == "" ||
t.DestinationRuleStatus == "DISABLE" && t.PeerAuthenticationStatus == ""
}