001/* 002 * nimbus-jose-jwt 003 * 004 * Copyright 2012-2016, Connect2id Ltd. 005 * 006 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use 007 * this file except in compliance with the License. You may obtain a copy of the 008 * License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software distributed 013 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 014 * CONDITIONS OF ANY KIND, either express or implied. See the License for the 015 * specific language governing permissions and limitations under the License. 016 */ 017 018package com.nimbusds.jose.util; 019 020 021import java.text.ParseException; 022import java.util.LinkedList; 023import java.util.List; 024 025import com.nimbusds.jose.util.Base64; 026import net.minidev.json.JSONArray; 027 028 029/** 030 * X.509 certificate chain utilities. 031 * 032 * @author Vladimir Dzhuvinov 033 * @version 2013-05-29 034 */ 035public class X509CertChainUtils { 036 037 /** 038 * Parses an X.509 certificate chain from the specified JSON array. 039 * 040 * @param jsonArray The JSON array to parse. Must not be {@code null}. 041 * 042 * @return The X.509 certificate chain. 043 * 044 * @throws ParseException If the X.509 certificate chain couldn't be 045 * parsed. 046 */ 047 public static List<Base64> parseX509CertChain(final JSONArray jsonArray) 048 throws ParseException { 049 050 List<Base64> chain = new LinkedList<>(); 051 052 for (int i=0; i < jsonArray.size(); i++) { 053 054 Object item = jsonArray.get(i); 055 056 if (item == null) { 057 throw new ParseException("The X.509 certificate at position " + i + " must not be null", 0); 058 } 059 060 if (! (item instanceof String)) { 061 throw new ParseException("The X.509 certificate at position " + i + " must be encoded as a Base64 string", 0); 062 } 063 064 chain.add(new Base64((String)item)); 065 } 066 067 return chain; 068 } 069 070 /** 071 * Prevents public instantiation. 072 */ 073 private X509CertChainUtils() {} 074}