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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 to JDK 1.8. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

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package org.bouncycastle.cert.path;

import java.util.Collections;
import java.util.Set;

import org.bouncycastle.util.Arrays;

public class CertPathValidationResult
{
    private final boolean isValid;
    private final CertPathValidationException cause;
    private final Set unhandledCriticalExtensionOIDs;
    private final int certIndex;
    private final int ruleIndex;

    private CertPathValidationException[] causes;
    private int[] certIndexes;
    private int[] ruleIndexes;

    public CertPathValidationResult(CertPathValidationContext context)
    {
        this.unhandledCriticalExtensionOIDs = Collections.unmodifiableSet(context.getUnhandledCriticalExtensionOIDs());
        this.isValid = this.unhandledCriticalExtensionOIDs.isEmpty();
        this.certIndex = -1;
        this.ruleIndex = -1;
        cause = null;
    }

    public CertPathValidationResult(CertPathValidationContext context, int certIndex, int ruleIndex, CertPathValidationException cause)
    {
        this.unhandledCriticalExtensionOIDs = Collections.unmodifiableSet(context.getUnhandledCriticalExtensionOIDs());
        this.isValid = false;
        this.certIndex = certIndex;
        this.ruleIndex = ruleIndex;
        this.cause = cause;
    }

    public CertPathValidationResult(CertPathValidationContext context, int[] certIndexes, int[] ruleIndexes, CertPathValidationException[] causes)
    {
        this.unhandledCriticalExtensionOIDs = Collections.unmodifiableSet(context.getUnhandledCriticalExtensionOIDs());
        this.isValid = false;
        this.cause = causes[0];
        this.certIndex = certIndexes[0];
        this.ruleIndex = ruleIndexes[0];
        this.causes = causes;
        this.certIndexes = certIndexes;
        this.ruleIndexes = ruleIndexes;
    }

    public boolean isValid()
    {
        return isValid;
    }

    public CertPathValidationException getCause()
    {
        if (cause != null)
        {
            return cause;
        }

        if (!unhandledCriticalExtensionOIDs.isEmpty())
        {
            return new CertPathValidationException("Unhandled Critical Extensions");
        }

        return null;
    }

    public int getFailingCertIndex()
    {
        return certIndex;
    }

    public int getFailingRuleIndex()
    {
        return ruleIndex;
    }

    public Set getUnhandledCriticalExtensionOIDs()
    {
        return unhandledCriticalExtensionOIDs;
    }

    public boolean isDetailed()
    {
        return this.certIndexes != null;
    }

    public CertPathValidationException[] getCauses()
    {
        if (causes != null)
        {
            CertPathValidationException[] rv = new CertPathValidationException[causes.length];

            System.arraycopy(causes, 0, rv, 0, causes.length);

            return rv;
        }

        if (!unhandledCriticalExtensionOIDs.isEmpty())
        {
            return new CertPathValidationException[]
                { new CertPathValidationException("Unhandled Critical Extensions") };
        }

        return null;
    }

    public int[] getFailingCertIndexes()
    {
        return Arrays.clone(certIndexes);
    }

    public int[] getFailingRuleIndexes()
    {
        return Arrays.clone(ruleIndexes);
    }
}