eu.europa.ec.eudi.sdjwt.vc.X509SubjectAlternativeName.kt Maven / Gradle / Ivy
/*
* Copyright (c) 2023 European Commission
*
* 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 eu.europa.ec.eudi.sdjwt.vc
import java.security.cert.X509Certificate
fun X509Certificate.sanOfUniformResourceIdentifier(): Result> =
san(X509SubjectAlternativeNameType.UniformResourceIdentifier)
fun X509Certificate.sanOfDNSName(): Result> =
san(X509SubjectAlternativeNameType.DNSName)
private fun X509Certificate.san(type: X509SubjectAlternativeNameType): Result> = runCatching {
buildList {
subjectAlternativeNames
?.filter { subjectAltNames -> !subjectAltNames.isNullOrEmpty() && subjectAltNames.size == 2 }
?.forEach { entry ->
val altNameType = entry[0] as Int
entry[1]?.takeIf { altNameType == type.asInt() }?.let { add(it as String) }
}
}
}
private enum class X509SubjectAlternativeNameType {
UniformResourceIdentifier,
DNSName,
}
// https://www.rfc-editor.org/rfc/rfc5280.html
private fun X509SubjectAlternativeNameType.asInt() = when (this) {
X509SubjectAlternativeNameType.UniformResourceIdentifier -> 6
X509SubjectAlternativeNameType.DNSName -> 2
}