src/AuthorityKeyIdentifier.js

import * as asn1js from "asn1js";
import { getParametersValue, clearProps } from "pvutils";
import GeneralName from "./GeneralName.js";
//**************************************************************************************
/**
 * Class from RFC5280
 */
export default class AuthorityKeyIdentifier
{
	//**********************************************************************************
	/**
	 * Constructor for AuthorityKeyIdentifier class
	 * @param {Object} [parameters={}]
	 * @property {Object} [schema] asn1js parsed value
	 */
	constructor(parameters = {})
	{
		//region Internal properties of the object
		if("keyIdentifier" in parameters)
			/**
			 * @type {OctetString}
			 * @description keyIdentifier
			 */
			this.keyIdentifier = getParametersValue(parameters, "keyIdentifier", AuthorityKeyIdentifier.defaultValues("keyIdentifier"));

		if("authorityCertIssuer" in parameters)
			/**
			 * @type {Array.<GeneralName>}
			 * @description authorityCertIssuer
			 */
			this.authorityCertIssuer = getParametersValue(parameters, "authorityCertIssuer", AuthorityKeyIdentifier.defaultValues("authorityCertIssuer"));

		if("authorityCertSerialNumber" in parameters)
			/**
			 * @type {Integer}
			 * @description authorityCertIssuer
			 */
			this.authorityCertSerialNumber = getParametersValue(parameters, "authorityCertSerialNumber", AuthorityKeyIdentifier.defaultValues("authorityCertSerialNumber"));
		//endregion

		//region If input argument array contains "schema" for this object
		if("schema" in parameters)
			this.fromSchema(parameters.schema);
		//endregion
	}
	//**********************************************************************************
	/**
	 * Return default values for all class members
	 * @param {string} memberName String name for a class member
	 */
	static defaultValues(memberName)
	{
		switch(memberName)
		{
			case "keyIdentifier":
				return new asn1js.OctetString();
			case "authorityCertIssuer":
				return [];
			case "authorityCertSerialNumber":
				return new asn1js.Integer();
			default:
				throw new Error(`Invalid member name for AuthorityKeyIdentifier class: ${memberName}`);
		}
	}
	//**********************************************************************************
	/**
	 * Return value of asn1js schema for current class
	 * @param {Object} parameters Input parameters for the schema
	 * @returns {Object} asn1js schema object
	 */
	static schema(parameters = {})
	{
		// AuthorityKeyIdentifier OID ::= 2.5.29.35
		//
		//AuthorityKeyIdentifier ::= SEQUENCE {
		//    keyIdentifier             [0] KeyIdentifier           OPTIONAL,
		//    authorityCertIssuer       [1] GeneralNames            OPTIONAL,
		//    authorityCertSerialNumber [2] CertificateSerialNumber OPTIONAL  }
		//
		//KeyIdentifier ::= OCTET STRING

		/**
		 * @type {Object}
		 * @property {string} [blockName]
		 * @property {string} [keyIdentifier]
		 * @property {string} [authorityCertIssuer]
		 * @property {string} [authorityCertSerialNumber]
		 */
		const names = getParametersValue(parameters, "names", {});

		return (new asn1js.Sequence({
			name: (names.blockName || ""),
			value: [
				new asn1js.Primitive({
					name: (names.keyIdentifier || ""),
					optional: true,
					idBlock: {
						tagClass: 3, // CONTEXT-SPECIFIC
						tagNumber: 0 // [0]
					}
				}),
				new asn1js.Constructed({
					optional: true,
					idBlock: {
						tagClass: 3, // CONTEXT-SPECIFIC
						tagNumber: 1 // [1]
					},
					value: [
						new asn1js.Repeated({
							name: (names.authorityCertIssuer || ""),
							value: GeneralName.schema()
						})
					]
				}),
				new asn1js.Primitive({
					name: (names.authorityCertSerialNumber || ""),
					optional: true,
					idBlock: {
						tagClass: 3, // CONTEXT-SPECIFIC
						tagNumber: 2 // [2]
					}
				})
			]
		}));
	}
	//**********************************************************************************
	/**
	 * Convert parsed asn1js object into current class
	 * @param {!Object} schema
	 */
	fromSchema(schema)
	{
		//region Clear input data first
		clearProps(schema, [
			"keyIdentifier",
			"authorityCertIssuer",
			"authorityCertSerialNumber"
		]);
		//endregion
		
		//region Check the schema is valid
		const asn1 = asn1js.compareSchema(schema,
			schema,
			AuthorityKeyIdentifier.schema({
				names: {
					keyIdentifier: "keyIdentifier",
					authorityCertIssuer: "authorityCertIssuer",
					authorityCertSerialNumber: "authorityCertSerialNumber"
				}
			})
		);

		if(asn1.verified === false)
			throw new Error("Object's schema was not verified against input data for AuthorityKeyIdentifier");
		//endregion

		//region Get internal properties from parsed schema
		if("keyIdentifier" in asn1.result)
			this.keyIdentifier = new asn1js.OctetString({ valueHex: asn1.result.keyIdentifier.valueBlock.valueHex });

		if("authorityCertIssuer" in asn1.result)
			this.authorityCertIssuer = Array.from(asn1.result.authorityCertIssuer, element => new GeneralName({ schema: element }));

		if("authorityCertSerialNumber" in asn1.result)
			this.authorityCertSerialNumber = new asn1js.Integer({ valueHex: asn1.result.authorityCertSerialNumber.valueBlock.valueHex });
		//endregion
	}
	//**********************************************************************************
	/**
	 * Convert current object to asn1js object and set correct values
	 * @returns {Object} asn1js object
	 */
	toSchema()
	{
		//region Create array for output sequence
		const outputArray = [];
		
		if("keyIdentifier" in this)
		{
			outputArray.push(new asn1js.Constructed({
				idBlock: {
					tagClass: 3, // CONTEXT-SPECIFIC
					tagNumber: 0 // [0]
				},
				value: this.keyIdentifier.valueBlock.value
			}));
		}
		
		if("authorityCertIssuer" in this)
		{
			outputArray.push(new asn1js.Constructed({
				idBlock: {
					tagClass: 3, // CONTEXT-SPECIFIC
					tagNumber: 1 // [1]
				},
				value: Array.from(this.authorityCertIssuer, element => element.toSchema())
			}));
		}
		
		if("authorityCertSerialNumber" in this)
		{
			outputArray.push(new asn1js.Constructed({
				idBlock: {
					tagClass: 3, // CONTEXT-SPECIFIC
					tagNumber: 2 // [2]
				},
				value: this.authorityCertSerialNumber.valueBlock.value
			}));
		}
		//endregion
		
		//region Construct and return new ASN.1 schema for this object
		return (new asn1js.Sequence({
			value: outputArray
		}));
		//endregion
	}
	//**********************************************************************************
	/**
	 * Convertion for the class to JSON object
	 * @returns {Object}
	 */
	toJSON()
	{
		const object = {};

		if("keyIdentifier" in this)
			object.keyIdentifier = this.keyIdentifier.toJSON();

		if("authorityCertIssuer" in this)
			object.authorityCertIssuer = Array.from(this.authorityCertIssuer, element => element.toJSON());

		if("authorityCertSerialNumber" in this)
			object.authorityCertSerialNumber = this.authorityCertSerialNumber.toJSON();

		return object;
	}
	//**********************************************************************************
}
//**************************************************************************************