validate_crit.js 1.6 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", { value: true });
  3. const errors_js_1 = require("../util/errors.js");
  4. function validateCrit(Err, recognizedDefault, recognizedOption, protectedHeader, joseHeader) {
  5. if (joseHeader.crit !== undefined && protectedHeader.crit === undefined) {
  6. throw new Err('"crit" (Critical) Header Parameter MUST be integrity protected');
  7. }
  8. if (!protectedHeader || protectedHeader.crit === undefined) {
  9. return new Set();
  10. }
  11. if (!Array.isArray(protectedHeader.crit) ||
  12. protectedHeader.crit.length === 0 ||
  13. protectedHeader.crit.some((input) => typeof input !== 'string' || input.length === 0)) {
  14. throw new Err('"crit" (Critical) Header Parameter MUST be an array of non-empty strings when present');
  15. }
  16. let recognized;
  17. if (recognizedOption !== undefined) {
  18. recognized = new Map([...Object.entries(recognizedOption), ...recognizedDefault.entries()]);
  19. }
  20. else {
  21. recognized = recognizedDefault;
  22. }
  23. for (const parameter of protectedHeader.crit) {
  24. if (!recognized.has(parameter)) {
  25. throw new errors_js_1.JOSENotSupported(`Extension Header Parameter "${parameter}" is not recognized`);
  26. }
  27. if (joseHeader[parameter] === undefined) {
  28. throw new Err(`Extension Header Parameter "${parameter}" is missing`);
  29. }
  30. else if (recognized.get(parameter) && protectedHeader[parameter] === undefined) {
  31. throw new Err(`Extension Header Parameter "${parameter}" MUST be integrity protected`);
  32. }
  33. }
  34. return new Set(protectedHeader.crit);
  35. }
  36. exports.default = validateCrit;