From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- .../js/PKI.js/src/EncapsulatedContentInfo.ts | 221 +++++++++++++++++++++ 1 file changed, 221 insertions(+) create mode 100644 third_party/js/PKI.js/src/EncapsulatedContentInfo.ts (limited to 'third_party/js/PKI.js/src/EncapsulatedContentInfo.ts') diff --git a/third_party/js/PKI.js/src/EncapsulatedContentInfo.ts b/third_party/js/PKI.js/src/EncapsulatedContentInfo.ts new file mode 100644 index 0000000000..8424aecb0d --- /dev/null +++ b/third_party/js/PKI.js/src/EncapsulatedContentInfo.ts @@ -0,0 +1,221 @@ +import * as asn1js from "asn1js"; +import * as pvutils from "pvutils"; +import { EMPTY_STRING } from "./constants"; +import { AsnError } from "./errors"; +import { PkiObject, PkiObjectParameters } from "./PkiObject"; +import * as Schema from "./Schema"; + +const E_CONTENT_TYPE = "eContentType"; +const E_CONTENT = "eContent"; +const CLEAR_PROPS = [ + E_CONTENT_TYPE, + E_CONTENT, +]; + +export interface IEncapsulatedContentInfo { + eContentType: string; + eContent?: asn1js.OctetString; +} + +export interface EncapsulatedContentInfoJson { + eContentType: string; + eContent?: asn1js.OctetStringJson; +} + +export type EncapsulatedContentInfoParameters = PkiObjectParameters & Partial; + +export type EncapsulatedContentInfoSchema = Schema.SchemaParameters<{ + eContentType?: string; + eContent?: string; +}>; + +/** + * Represents the EncapsulatedContentInfo structure described in [RFC5652](https://datatracker.ietf.org/doc/html/rfc5652) + */ +export class EncapsulatedContentInfo extends PkiObject implements IEncapsulatedContentInfo { + + public static override CLASS_NAME = "EncapsulatedContentInfo"; + + public eContentType!: string; + public eContent?: asn1js.OctetString; + + /** + * Initializes a new instance of the {@link EncapsulatedContentInfo} class + * @param parameters Initialization parameters + */ + constructor(parameters: EncapsulatedContentInfoParameters = {}) { + super(); + + this.eContentType = pvutils.getParametersValue(parameters, E_CONTENT_TYPE, EncapsulatedContentInfo.defaultValues(E_CONTENT_TYPE)); + if (E_CONTENT in parameters) { + this.eContent = pvutils.getParametersValue(parameters, E_CONTENT, EncapsulatedContentInfo.defaultValues(E_CONTENT)); + if ((this.eContent.idBlock.tagClass === 1) && + (this.eContent.idBlock.tagNumber === 4)) { + //#region Divide OCTET STRING value down to small pieces + if (this.eContent.idBlock.isConstructed === false) { + const constrString = new asn1js.OctetString({ + idBlock: { isConstructed: true }, + isConstructed: true + }); + + let offset = 0; + const viewHex = this.eContent.valueBlock.valueHexView.slice().buffer; + let length = viewHex.byteLength; + + while (length > 0) { + const pieceView = new Uint8Array(viewHex, offset, ((offset + 65536) > viewHex.byteLength) ? (viewHex.byteLength - offset) : 65536); + const _array = new ArrayBuffer(pieceView.length); + const _view = new Uint8Array(_array); + + for (let i = 0; i < _view.length; i++) { + _view[i] = pieceView[i]; + } + + constrString.valueBlock.value.push(new asn1js.OctetString({ valueHex: _array })); + + length -= pieceView.length; + offset += pieceView.length; + } + + this.eContent = constrString; + } + //#endregion + } + } + + 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 E_CONTENT_TYPE): string; + public static override defaultValues(memberName: typeof E_CONTENT): asn1js.OctetString; + public static override defaultValues(memberName: string): any { + switch (memberName) { + case E_CONTENT_TYPE: + return EMPTY_STRING; + case E_CONTENT: + return new asn1js.OctetString(); + default: + return super.defaultValues(memberName); + } + } + + /** + * Compare values with default values for all class members + * @param memberName String name for a class member + * @param memberValue Value to compare with default value + */ + public static compareWithDefault(memberName: string, memberValue: any): boolean { + switch (memberName) { + case E_CONTENT_TYPE: + return (memberValue === EMPTY_STRING); + case E_CONTENT: + { + if ((memberValue.idBlock.tagClass === 1) && (memberValue.idBlock.tagNumber === 4)) + return (memberValue.isEqual(EncapsulatedContentInfo.defaultValues(E_CONTENT))); + + return false; + } + default: + return super.defaultValues(memberName); + } + } + + /** + * @inheritdoc + * @asn ASN.1 schema + * ```asn + * EncapsulatedContentInfo ::= SEQUENCE { + * eContentType ContentType, + * eContent [0] EXPLICIT OCTET STRING OPTIONAL } * Changed it to ANY, as in PKCS#7 + *``` + */ + public static override schema(parameters: EncapsulatedContentInfoSchema = {}): Schema.SchemaType { + const names = pvutils.getParametersValue>(parameters, "names", {}); + + return (new asn1js.Sequence({ + name: (names.blockName || EMPTY_STRING), + value: [ + new asn1js.ObjectIdentifier({ name: (names.eContentType || EMPTY_STRING) }), + new asn1js.Constructed({ + optional: true, + idBlock: { + tagClass: 3, // CONTEXT-SPECIFIC + tagNumber: 0 // [0] + }, + value: [ + new asn1js.Any({ name: (names.eContent || EMPTY_STRING) }) // In order to aling this with PKCS#7 and CMS as well + ] + }) + ] + })); + } + + 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, + EncapsulatedContentInfo.schema({ + names: { + eContentType: E_CONTENT_TYPE, + eContent: E_CONTENT + } + }) + ); + AsnError.assertSchema(asn1, this.className); + + // Get internal properties from parsed schema + this.eContentType = asn1.result.eContentType.valueBlock.toString(); + if (E_CONTENT in asn1.result) + this.eContent = asn1.result.eContent; + } + + public toSchema(): asn1js.Sequence { + //#region Create array for output sequence + const outputArray = []; + + outputArray.push(new asn1js.ObjectIdentifier({ value: this.eContentType })); + if (this.eContent) { + if (EncapsulatedContentInfo.compareWithDefault(E_CONTENT, this.eContent) === false) { + outputArray.push(new asn1js.Constructed({ + optional: true, + idBlock: { + tagClass: 3, // CONTEXT-SPECIFIC + tagNumber: 0 // [0] + }, + value: [this.eContent] + })); + } + } + //#endregion + + //#region Construct and return new ASN.1 schema for this object + return (new asn1js.Sequence({ + value: outputArray + })); + //#endregion + } + + public toJSON(): EncapsulatedContentInfoJson { + const res: EncapsulatedContentInfoJson = { + eContentType: this.eContentType + }; + + if (this.eContent && EncapsulatedContentInfo.compareWithDefault(E_CONTENT, this.eContent) === false) { + res.eContent = this.eContent.toJSON(); + } + + return res; + } + +} + -- cgit v1.2.3