1 files changed, 132 insertions, 0 deletions
diff --git a/third_party/js/PKI.js/src/PolicyMapping.ts b/third_party/js/PKI.js/src/PolicyMapping.ts
new file mode 100644
index 0000000000..fd4dc1e414
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+++ b/third_party/js/PKI.js/src/PolicyMapping.ts
@@ -0,0 +1,132 @@
+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 ISSUER_DOMAIN_POLICY = "issuerDomainPolicy";
+const SUBJECT_DOMAIN_POLICY = "subjectDomainPolicy";
+const CLEAR_PROPS = [
+  ISSUER_DOMAIN_POLICY,
+  SUBJECT_DOMAIN_POLICY
+];
+
+export interface IPolicyMapping {
+  issuerDomainPolicy: string;
+  subjectDomainPolicy: string;
+}
+
+export interface PolicyMappingJson {
+  issuerDomainPolicy: string;
+  subjectDomainPolicy: string;
+}
+
+export type PolicyMappingParameters = PkiObjectParameters & Partial<IPolicyMapping>;
+
+/**
+ * Represents the PolicyMapping structure described in [RFC5280](https://datatracker.ietf.org/doc/html/rfc5280)
+ */
+export class PolicyMapping extends PkiObject implements IPolicyMapping {
+
+  public static override CLASS_NAME = "PolicyMapping";
+
+  public issuerDomainPolicy!: string;
+  public subjectDomainPolicy!: string;
+
+  /**
+   * Initializes a new instance of the {@link PolicyMapping} class
+   * @param parameters Initialization parameters
+   */
+  constructor(parameters: PolicyMappingParameters = {}) {
+    super();
+
+    this.issuerDomainPolicy = pvutils.getParametersValue(parameters, ISSUER_DOMAIN_POLICY, PolicyMapping.defaultValues(ISSUER_DOMAIN_POLICY));
+    this.subjectDomainPolicy = pvutils.getParametersValue(parameters, SUBJECT_DOMAIN_POLICY, PolicyMapping.defaultValues(SUBJECT_DOMAIN_POLICY));
+
+    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 ISSUER_DOMAIN_POLICY): string;
+  public static override defaultValues(memberName: typeof SUBJECT_DOMAIN_POLICY): string;
+  public static override defaultValues(memberName: string): any {
+    switch (memberName) {
+      case ISSUER_DOMAIN_POLICY:
+        return EMPTY_STRING;
+      case SUBJECT_DOMAIN_POLICY:
+        return EMPTY_STRING;
+      default:
+        return super.defaultValues(memberName);
+    }
+  }
+
+  /**
+   * @inheritdoc
+   * @asn ASN.1 schema
+   * ```asn
+   * PolicyMapping ::= SEQUENCE {
+   *    issuerDomainPolicy      CertPolicyId,
+   *    subjectDomainPolicy     CertPolicyId }
+   *```
+   */
+  public static override schema(parameters: Schema.SchemaParameters<{
+    issuerDomainPolicy?: string;
+    subjectDomainPolicy?: string;
+  }> = {}): Schema.SchemaType {
+    const names = pvutils.getParametersValue<NonNullable<typeof parameters.names>>(parameters, "names", {});
+
+    return (new asn1js.Sequence({
+      name: (names.blockName || EMPTY_STRING),
+      value: [
+        new asn1js.ObjectIdentifier({ name: (names.issuerDomainPolicy || EMPTY_STRING) }),
+        new asn1js.ObjectIdentifier({ name: (names.subjectDomainPolicy || EMPTY_STRING) })
+      ]
+    }));
+  }
+
+  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,
+      PolicyMapping.schema({
+        names: {
+          issuerDomainPolicy: ISSUER_DOMAIN_POLICY,
+          subjectDomainPolicy: SUBJECT_DOMAIN_POLICY
+        }
+      })
+    );
+    AsnError.assertSchema(asn1, this.className);
+
+    // Get internal properties from parsed schema
+    this.issuerDomainPolicy = asn1.result.issuerDomainPolicy.valueBlock.toString();
+    this.subjectDomainPolicy = asn1.result.subjectDomainPolicy.valueBlock.toString();
+  }
+
+  public toSchema(): asn1js.Sequence {
+    // Construct and return new ASN.1 schema for this object
+    return (new asn1js.Sequence({
+      value: [
+        new asn1js.ObjectIdentifier({ value: this.issuerDomainPolicy }),
+        new asn1js.ObjectIdentifier({ value: this.subjectDomainPolicy })
+      ]
+    }));
+  }
+
+  public toJSON(): PolicyMappingJson {
+    return {
+      issuerDomainPolicy: this.issuerDomainPolicy,
+      subjectDomainPolicy: this.subjectDomainPolicy
+    };
+  }
+
+}