com.nimbusds.jose.HeaderValidation Maven / Gradle / Ivy
Show all versions of nimbus-jose-jwt Show documentation
/*
* nimbus-jose-jwt
*
* Copyright 2012-2016, Connect2id Ltd and contributors.
*
* 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 com.nimbusds.jose;
/**
* JOSE header validation utility.
*/
class HeaderValidation {
/**
* Ensures the parameter names in the JOSE protected header and the
* unprotected header are disjoint.
*
* See https://datatracker.ietf.org/doc/html/rfc7515#section-7.2.1
*
* @param header The protected header, {@code null} if
* not specified.
* @param unprotectedHeader The unprotected header, {@code null} if
* not specified.
*
* @throws IllegalHeaderException If both headers are specified and not
* disjoint.
*/
static void ensureDisjoint(final Header header, final UnprotectedHeader unprotectedHeader)
throws IllegalHeaderException {
if (header == null || unprotectedHeader == null) {
return;
}
for (String unprotectedParamName: unprotectedHeader.getIncludedParams()) {
if (header.getIncludedParams().contains(unprotectedParamName)) {
throw new IllegalHeaderException("The parameters in the protected header and the unprotected header must be disjoint");
}
}
}
private HeaderValidation() {}
}