Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 *  Copyright 2006-2015 WebPKI.org (http://webpki.org).
 *
 *  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.
 *
 */

import java.io.IOException;

import java.security.cert.X509Certificate;

import java.security.GeneralSecurityException;
import javax.security.auth.x500.X500Principal;

public class Main {
    public static X509Certificate[] getSortedPath(X509Certificate[] inpath) throws IOException {
        try {
            // Build/check path
            int n = 0;
            int[] idx = new int[inpath.length];
            int[] jidx = new int[inpath.length];
            boolean[] done = new boolean[inpath.length];
            for (int i = 0; i < inpath.length; i++) {
                X500Principal p = inpath[i].getIssuerX500Principal();
                idx[i] = -1;
                for (int j = 0; j < inpath.length; j++) {
                    if (j == i || done[j])
                        continue;
                    if (p.equals(inpath[j].getSubjectX500Principal())) // J is certifying I
                    {
                        n++;
                        idx[i] = j;
                        jidx[j] = i;
                        done[j] = true;
                        inpath[i].verify(inpath[j].getPublicKey());
                        break;
                    }
                }
            }
            if (n != (inpath.length - 1)) {
                throw new IOException("X509Certificate elements contain multiple or broken cert paths");
            }

            // Path OK, now sort it
            X509Certificate[] certpath = new X509Certificate[inpath.length];
            for (int i = 0; i < inpath.length; i++) {
                if (idx[i] < 0) // Must be the highest
                {
                    certpath[n] = inpath[i];
                    while (--n >= 0) {
                        certpath[n] = inpath[i = jidx[i]];
                    }
                    break;
                }
            }
            return certpath;
        } catch (GeneralSecurityException gse) {
            throw new IOException(gse);
        }
    }
}