com.tencent.kona.sun.security.x509.CRLDistributionPointsExtension Maven / Gradle / Ivy
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package com.tencent.kona.sun.security.x509;
import java.io.IOException;
import java.util.*;
import com.tencent.kona.sun.security.util.DerOutputStream;
import com.tencent.kona.sun.security.util.DerValue;
import com.tencent.kona.sun.security.util.ObjectIdentifier;
/**
* Represent the CRL Distribution Points Extension (OID = 2.5.29.31).
*
* The CRL distribution points extension identifies how CRL information
* is obtained. The extension SHOULD be non-critical, but the PKIX profile
* recommends support for this extension by CAs and applications.
*
* For PKIX, if the cRLDistributionPoints extension contains a
* DistributionPointName of type URI, the following semantics MUST be
* assumed: the URI is a pointer to the current CRL for the associated
* reasons and will be issued by the associated cRLIssuer. The
* expected values for the URI conform to the following rules. The
* name MUST be a non-relative URL, and MUST follow the URL syntax and
* encoding rules specified in [RFC 1738]. The name must include both
* a scheme (e.g., "http" or "ftp") and a scheme-specific-part. The
* scheme- specific-part must include a fully qualified domain name or
* IP address as the host. As specified in [RFC 1738], the scheme
* name is not case-sensitive (e.g., "http" is equivalent to "HTTP").
* The host part is also not case-sensitive, but other components of
* the scheme-specific-part may be case-sensitive. When comparing
* URIs, conforming implementations MUST compare the scheme and host
* without regard to case, but assume the remainder of the
* scheme-specific-part is case-sensitive. Processing rules for other
* values are not defined by this specification. If the
* distributionPoint omits reasons, the CRL MUST include revocations
* for all reasons. If the distributionPoint omits cRLIssuer, the CRL
* MUST be issued by the CA that issued the certificate.
*
* The ASN.1 definition for this is:
*
* id-ce-cRLDistributionPoints OBJECT IDENTIFIER ::= { id-ce 31 }
*
* cRLDistributionPoints ::= {
* CRLDistPointsSyntax }
*
* CRLDistPointsSyntax ::= SEQUENCE SIZE (1..MAX) OF DistributionPoint
*
*
* @author Anne Anderson
* @author Andreas Sterbenz
* @since 1.4.2
* @see DistributionPoint
* @see Extension
*/
public class CRLDistributionPointsExtension extends Extension {
public static final String NAME = "CRLDistributionPoints";
/**
* The List of DistributionPoint objects.
*/
private List distributionPoints;
private final String extensionName;
/**
* Create a CRLDistributionPointsExtension from a List of
* DistributionPoint; the criticality is set to false.
*
* @param distributionPoints the list of distribution points
* @throws IOException on error
*/
public CRLDistributionPointsExtension(
List distributionPoints) {
this(false, distributionPoints);
}
/**
* Create a CRLDistributionPointsExtension from a List of
* DistributionPoint.
*
* @param isCritical the criticality setting.
* @param distributionPoints the list of distribution points,
* cannot be null or empty.
*/
public CRLDistributionPointsExtension(boolean isCritical,
List distributionPoints) {
this(PKIXExtensions.CRLDistributionPoints_Id, isCritical,
distributionPoints, NAME);
}
/**
* Creates the extension (also called by the subclass).
*/
protected CRLDistributionPointsExtension(ObjectIdentifier extensionId,
boolean isCritical, List distributionPoints,
String extensionName) {
if (distributionPoints == null || distributionPoints.isEmpty()) {
throw new IllegalArgumentException(
"distribution points cannot be null or empty");
}
this.extensionId = extensionId;
this.critical = isCritical;
this.distributionPoints = distributionPoints;
encodeThis();
this.extensionName = extensionName;
}
/**
* Create the extension from the passed DER encoded value of the same.
*
* @param critical true if the extension is to be treated as critical.
* @param value Array of DER encoded bytes of the actual value.
* @exception IOException on error.
*/
public CRLDistributionPointsExtension(Boolean critical, Object value)
throws IOException {
this(PKIXExtensions.CRLDistributionPoints_Id, critical, value, NAME);
}
/**
* Creates the extension (also called by the subclass).
*/
protected CRLDistributionPointsExtension(ObjectIdentifier extensionId,
Boolean critical, Object value, String extensionName)
throws IOException {
this.extensionId = extensionId;
this.critical = critical.booleanValue();
if (!(value instanceof byte[])) {
throw new IOException("Illegal argument type");
}
extensionValue = (byte[])value;
DerValue val = new DerValue(extensionValue);
if (val.tag != DerValue.tag_Sequence) {
throw new IOException("Invalid encoding for " + extensionName +
" extension.");
}
distributionPoints = new ArrayList<>();
while (val.data.available() != 0) {
DerValue seq = val.data.getDerValue();
DistributionPoint point = new DistributionPoint(seq);
distributionPoints.add(point);
}
this.extensionName = extensionName;
}
/**
* Return the name of this extension.
*/
public String getName() {
return extensionName;
}
/**
* Write the extension to the DerOutputStream.
*
* @param out the DerOutputStream to write the extension to.
* @exception IOException on encoding errors.
*/
@Override
public void encode(DerOutputStream out) {
encode(out, PKIXExtensions.CRLDistributionPoints_Id, false);
}
/**
* Write the extension to the DerOutputStream.
* (Also called by the subclass)
*/
protected void encode(DerOutputStream out, ObjectIdentifier extensionId,
boolean isCritical) {
if (this.extensionValue == null) {
this.extensionId = extensionId;
this.critical = isCritical;
encodeThis();
}
super.encode(out);
}
/**
* Get the DistributionPoint value.
*/
public List getDistributionPoints() {
return distributionPoints;
}
// Encode this extension value
private void encodeThis() {
if (distributionPoints.isEmpty()) {
this.extensionValue = null;
} else {
DerOutputStream pnts = new DerOutputStream();
for (DistributionPoint point : distributionPoints) {
point.encode(pnts);
}
DerOutputStream seq = new DerOutputStream();
seq.write(DerValue.tag_Sequence, pnts);
this.extensionValue = seq.toByteArray();
}
}
/**
* Return the extension as user readable string.
*/
public String toString() {
return super.toString() + extensionName + " [\n "
+ distributionPoints + "]\n";
}
}