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package model.x501;
import model.asn1.ASN1Object;
import model.asn1.ObjectIdentifier;
import model.asn1.Tag;
import model.asn1.exceptions.ParseException;
import model.asn1.parsing.BytesReader;
import java.util.Arrays;
import java.util.Collection;
import java.util.stream.Stream;
/**
* Implements the following:
* <pre>
* AttributeTypeAndValue ::= SEQUENCE {
* type ATTRIBUTE.&id({SupportedAttributes}),
* value ATTRIBUTE.&Type({SupportedAttributes}{@type}),
* ... }
* </pre>
*/
public class AttributeTypeAndValue extends ASN1Object {
/**
* The type of that attribute. For example, <pre>2.5.4.10</pre> is OU.
* It determines the format of the value.
*/
private final ObjectIdentifier type;
/**
* Value corresponding to type.
*/
private final ASN1Object value;
/**
* EFFECT: Init the object with tag, parentTag, type, and values. For tag and parentTag, see {@link ASN1Object}.
* REQUIRES: The values must match the type. Type tag should be UNIVERSAL OID.
*/
public AttributeTypeAndValue(Tag tag, Tag parentTag,
ObjectIdentifier type, ASN1Object value) {
super(tag, parentTag);
this.type = type;
this.value = value;
}
/**
* EFFECTS: Parse input DER. Value is not checked against the type.
* Throws {@link ASN1Object} if invalid:
* - Any fields missing
* - Any fields having an incorrect tag (as seen in the ASN.1 definition)
* - Any fields with encoding instructions that violate implicit / explicit encoding rules
* - Other issues found during parsing the object, like early EOF (see {@link ASN1Object})
* MODIFIES: this, encoded
*/
public AttributeTypeAndValue(BytesReader encoded, boolean hasParentTag) throws ParseException {
super(encoded, hasParentTag);
this.type = new ObjectIdentifier(encoded, false);
this.type.getTag().enforce(ObjectIdentifier.TAG);
this.value = ASN1Object.parse(encoded, false);
}
/**
* EFFECTS: Encode the fields into DER, in the order.
*/
@Override
public Byte[] encodeValueDER() {
return Stream.of(Arrays.asList(type.encodeDER()),
Arrays.asList(value.encodeDER()))
.flatMap(Collection::stream)
.toArray(Byte[]::new);
}
/**
* EFFECTS: Return in TYPE=Value format. Type will be either x.x.x.x.x or human-readable strings like CN. Value is
* input-defined. ',' '+' '=' will be escaped.
*/
@Override
public String toString() {
return type.toString().replace(",", "\\,")
.replace("=", "\\=")
.replace("+", "\\+")
+ "=" + value.toString().replace(",", "\\,")
.replace("=", "\\=")
.replace("+", "\\+");
}
public ObjectIdentifier getType() {
return type;
}
public ASN1Object getValue() {
return value;
}
}
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