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gen_certs.go
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gen_certs.go
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package certgen
import (
"crypto/x509"
"fmt"
"github.com/solo-io/k8s-utils/certutils"
"k8s.io/client-go/util/cert"
"knative.dev/pkg/network"
)
func GenCerts(svcName, svcNamespace string) (*certutils.Certificates, error) {
return certutils.GenerateSelfSignedCertificate(cert.Config{
CommonName: fmt.Sprintf("%s.%s.svc", svcName, svcNamespace),
Organization: []string{"solo.io"},
AltNames: cert.AltNames{
DNSNames: getDnsNames(svcName, svcNamespace),
},
Usages: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth, x509.ExtKeyUsageClientAuth},
})
}
// Returns true if any of the given DNS names matches any of the DNS names generated for the given service.
func ValidForService(dnsNames []string, svcName, svcNamespace string) bool {
svcDnsNames := getDnsNames(svcName, svcNamespace)
for _, name := range dnsNames {
for _, svcDnsName := range svcDnsNames {
if name == svcDnsName {
return true
}
}
}
return false
}
func getDnsNames(svcName, svcNamespace string) []string {
return []string{
svcName,
fmt.Sprintf("%s.%s", svcName, svcNamespace),
fmt.Sprintf("%s.%s.svc", svcName, svcNamespace),
fmt.Sprintf("%s.%s.svc.%s", svcName, svcNamespace, network.GetClusterDomainName()),
}
}