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import * as asn1js from "asn1js";
import * as pvutils from "pvutils";
import { EMPTY_STRING } from "./constants";
import { AsnError } from "./errors";
import { Extension, ExtensionJson, ExtensionSchema } from "./Extension";
import { PkiObject, PkiObjectParameters } from "./PkiObject";
import * as Schema from "./Schema";
const EXTENSIONS = "extensions";
const CLEAR_PROPS = [
EXTENSIONS,
];
export interface IExtensions {
/**
* List of extensions
*/
extensions: Extension[];
}
export type ExtensionsParameters = PkiObjectParameters & Partial<IExtensions>;
export type ExtensionsSchema = Schema.SchemaParameters<{
extensions?: string;
extension?: ExtensionSchema;
}>;
export interface ExtensionsJson {
extensions: ExtensionJson[];
}
/**
* Represents the Extensions structure described in [RFC5280](https://datatracker.ietf.org/doc/html/rfc5280)
*/
export class Extensions extends PkiObject implements IExtensions {
public static override CLASS_NAME = "Extensions";
public extensions!: Extension[];
/**
* Initializes a new instance of the {@link Extensions} class
* @param parameters Initialization parameters
*/
constructor(parameters: ExtensionsParameters = {}) {
super();
this.extensions = pvutils.getParametersValue(parameters, EXTENSIONS, Extensions.defaultValues(EXTENSIONS));
if (parameters.schema) {
this.fromSchema(parameters.schema);
}
}
/**
* Returns default values for all class members
* @param memberName String name for a class member
* @returns Default value
*/
public static override defaultValues(memberName: typeof EXTENSIONS): Extension[];
public static override defaultValues(memberName: string): any {
switch (memberName) {
case EXTENSIONS:
return [];
default:
return super.defaultValues(memberName);
}
}
/**
* @inheritdoc
* @asn ASN.1 schema
* ```asn
* Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension
* ```
*
* @param parameters Input parameters for the schema
* @param optional Flag that current schema should be optional
* @returns ASN.1 schema object
*/
public static override schema(parameters: ExtensionsSchema = {}, optional = false) {
const names = pvutils.getParametersValue<NonNullable<typeof parameters.names>>(parameters, "names", {});
return (new asn1js.Sequence({
optional,
name: (names.blockName || EMPTY_STRING),
value: [
new asn1js.Repeated({
name: (names.extensions || EMPTY_STRING),
value: Extension.schema(names.extension || {})
})
]
}));
}
public fromSchema(schema: Schema.SchemaType): void {
// Clear input data first
pvutils.clearProps(schema, CLEAR_PROPS);
// Check the schema is valid
const asn1 = asn1js.compareSchema(schema,
schema,
Extensions.schema({
names: {
extensions: EXTENSIONS
}
})
);
AsnError.assertSchema(asn1, this.className);
// Get internal properties from parsed schema
this.extensions = Array.from(asn1.result.extensions, element => new Extension({ schema: element }));
}
public toSchema(): asn1js.Sequence {
//#region Construct and return new ASN.1 schema for this object
return (new asn1js.Sequence({
value: Array.from(this.extensions, o => o.toSchema())
}));
//#endregion
}
public toJSON(): ExtensionsJson {
return {
extensions: this.extensions.map(o => o.toJSON())
};
}
}
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