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Filename : validate_crit.js
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const errors_js_1 = require("../util/errors.js");
function validateCrit(Err, recognizedDefault, recognizedOption, protectedHeader, joseHeader) {
    if (joseHeader.crit !== undefined && protectedHeader.crit === undefined) {
        throw new Err('"crit" (Critical) Header Parameter MUST be integrity protected');
    }
    if (!protectedHeader || protectedHeader.crit === undefined) {
        return new Set();
    }
    if (!Array.isArray(protectedHeader.crit) ||
        protectedHeader.crit.length === 0 ||
        protectedHeader.crit.some((input) => typeof input !== 'string' || input.length === 0)) {
        throw new Err('"crit" (Critical) Header Parameter MUST be an array of non-empty strings when present');
    }
    let recognized;
    if (recognizedOption !== undefined) {
        recognized = new Map([...Object.entries(recognizedOption), ...recognizedDefault.entries()]);
    }
    else {
        recognized = recognizedDefault;
    }
    for (const parameter of protectedHeader.crit) {
        if (!recognized.has(parameter)) {
            throw new errors_js_1.JOSENotSupported(`Extension Header Parameter "${parameter}" is not recognized`);
        }
        if (joseHeader[parameter] === undefined) {
            throw new Err(`Extension Header Parameter "${parameter}" is missing`);
        }
        else if (recognized.get(parameter) && protectedHeader[parameter] === undefined) {
            throw new Err(`Extension Header Parameter "${parameter}" MUST be integrity protected`);
        }
    }
    return new Set(protectedHeader.crit);
}
exports.default = validateCrit;