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package model.pki.cert;
import model.asn1.ASN1Object;
import model.asn1.Encodable;
import model.asn1.Tag;
import model.asn1.exceptions.ParseException;
import model.asn1.parsing.BytesReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Stream;
/**
* Represents an X.509 certificate extensions list:
* <pre>
* Extensions ::= SEQUENCE OF Extension
* </pre>
*/
public class Extensions extends ASN1Object {
private final Extension[] extensions;
/**
* EFFECT: Initialize with the given tags and extensions. For tag and parentTag, consult
* {@link ASN1Object}.
* REQUIRES: Extensions should have SEQUENCE tag.
*/
public Extensions(Tag tag, Tag parentTag, Extension[] extensions) {
super(tag, parentTag);
this.extensions = extensions;
}
/**
* EFFECT: Parse the Name from input DER bytes. For details on parsing, refer to {@link ASN1Object}.
* Throws {@link ParseException} for invalid input.
* MODIFIES: this, encoded
*/
public Extensions(BytesReader encoded, boolean hasParentTag) throws ParseException {
super(encoded, hasParentTag);
final List<Extension> list = new ArrayList<>();
for (int i = 0; i < getLength(); ) {
int index = encoded.getIndex();
final Extension ext = new Extension(encoded, false);
ext.getTag().enforce(TAG_SEQUENCE);
list.add(ext);
index = encoded.getIndex() - index;
i += index;
}
this.extensions = list.toArray(new Extension[0]);
}
/**
* EFFECTS: Encode the SEQUENCE OF into DER, keep order. RDNs will be encoded one-by-one.
*/
@Override
public Byte[] encodeValueDER() {
return Stream.of(extensions)
.map(Encodable::encodeDER)
.flatMap(Arrays::stream)
.toArray(Byte[]::new);
}
public Extension[] getExtensions() {
return extensions;
}
}
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