1 files changed, 191 insertions, 0 deletions
diff --git a/third_party/js/PKI.js/src/NameConstraints.ts b/third_party/js/PKI.js/src/NameConstraints.ts
new file mode 100644
index 0000000000..48f86b11a5
--- /dev/null
+++ b/third_party/js/PKI.js/src/NameConstraints.ts
@@ -0,0 +1,191 @@
+import * as asn1js from "asn1js";
+import * as pvutils from "pvutils";
+import { EMPTY_STRING } from "./constants";
+import { AsnError } from "./errors";
+import { GeneralSubtree, GeneralSubtreeJson } from "./GeneralSubtree";
+import { PkiObject, PkiObjectParameters } from "./PkiObject";
+import * as Schema from "./Schema";
+
+const PERMITTED_SUBTREES = "permittedSubtrees";
+const EXCLUDED_SUBTREES = "excludedSubtrees";
+const CLEAR_PROPS = [
+  PERMITTED_SUBTREES,
+  EXCLUDED_SUBTREES
+];
+
+export interface INameConstraints {
+  permittedSubtrees?: GeneralSubtree[];
+  excludedSubtrees?: GeneralSubtree[];
+}
+
+export interface NameConstraintsJson {
+  permittedSubtrees?: GeneralSubtreeJson[];
+  excludedSubtrees?: GeneralSubtreeJson[];
+}
+
+export type NameConstraintsParameters = PkiObjectParameters & Partial<INameConstraints>;
+
+/**
+ * Represents the NameConstraints structure described in [RFC5280](https://datatracker.ietf.org/doc/html/rfc5280)
+ */
+export class NameConstraints extends PkiObject implements INameConstraints {
+
+  public static override CLASS_NAME = "NameConstraints";
+
+  public permittedSubtrees?: GeneralSubtree[];
+  public excludedSubtrees?: GeneralSubtree[];
+
+  /**
+   * Initializes a new instance of the {@link NameConstraints} class
+   * @param parameters Initialization parameters
+   */
+  constructor(parameters: NameConstraintsParameters = {}) {
+    super();
+
+    if (PERMITTED_SUBTREES in parameters) {
+      this.permittedSubtrees = pvutils.getParametersValue(parameters, PERMITTED_SUBTREES, NameConstraints.defaultValues(PERMITTED_SUBTREES));
+    }
+    if (EXCLUDED_SUBTREES in parameters) {
+      this.excludedSubtrees = pvutils.getParametersValue(parameters, EXCLUDED_SUBTREES, NameConstraints.defaultValues(EXCLUDED_SUBTREES));
+    }
+
+    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 PERMITTED_SUBTREES): GeneralSubtree[];
+  public static override defaultValues(memberName: typeof EXCLUDED_SUBTREES): GeneralSubtree[];
+  public static override defaultValues(memberName: string): any {
+    switch (memberName) {
+      case PERMITTED_SUBTREES:
+      case EXCLUDED_SUBTREES:
+        return [];
+      default:
+        return super.defaultValues(memberName);
+    }
+  }
+
+  /**
+   * @inheritdoc
+   * @asn ASN.1 schema
+   * ```asn
+   * NameConstraints ::= SEQUENCE {
+   *    permittedSubtrees       [0]     GeneralSubtrees OPTIONAL,
+   *    excludedSubtrees        [1]     GeneralSubtrees OPTIONAL }
+   *```
+   */
+  public static override schema(parameters: Schema.SchemaParameters<{
+    permittedSubtrees?: string;
+    excludedSubtrees?: 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.Constructed({
+          optional: true,
+          idBlock: {
+            tagClass: 3, // CONTEXT-SPECIFIC
+            tagNumber: 0 // [0]
+          },
+          value: [
+            new asn1js.Repeated({
+              name: (names.permittedSubtrees || EMPTY_STRING),
+              value: GeneralSubtree.schema()
+            })
+          ]
+        }),
+        new asn1js.Constructed({
+          optional: true,
+          idBlock: {
+            tagClass: 3, // CONTEXT-SPECIFIC
+            tagNumber: 1 // [1]
+          },
+          value: [
+            new asn1js.Repeated({
+              name: (names.excludedSubtrees || EMPTY_STRING),
+              value: GeneralSubtree.schema()
+            })
+          ]
+        })
+      ]
+    }));
+  }
+
+  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,
+      NameConstraints.schema({
+        names: {
+          permittedSubtrees: PERMITTED_SUBTREES,
+          excludedSubtrees: EXCLUDED_SUBTREES
+        }
+      })
+    );
+    AsnError.assertSchema(asn1, this.className);
+
+    // Get internal properties from parsed schema
+    if (PERMITTED_SUBTREES in asn1.result)
+      this.permittedSubtrees = Array.from(asn1.result.permittedSubtrees, element => new GeneralSubtree({ schema: element }));
+    if (EXCLUDED_SUBTREES in asn1.result)
+      this.excludedSubtrees = Array.from(asn1.result.excludedSubtrees, element => new GeneralSubtree({ schema: element }));
+  }
+
+  public toSchema(): asn1js.Sequence {
+    //#region Create array for output sequence
+    const outputArray = [];
+
+    if (this.permittedSubtrees) {
+      outputArray.push(new asn1js.Constructed({
+        idBlock: {
+          tagClass: 3, // CONTEXT-SPECIFIC
+          tagNumber: 0 // [0]
+        },
+        value: Array.from(this.permittedSubtrees, o => o.toSchema())
+      }));
+    }
+
+    if (this.excludedSubtrees) {
+      outputArray.push(new asn1js.Constructed({
+        idBlock: {
+          tagClass: 3, // CONTEXT-SPECIFIC
+          tagNumber: 1 // [1]
+        },
+        value: Array.from(this.excludedSubtrees, o => o.toSchema())
+      }));
+    }
+    //#endregion
+
+    //#region Construct and return new ASN.1 schema for this object
+    return (new asn1js.Sequence({
+      value: outputArray
+    }));
+    //#endregion
+  }
+
+  public toJSON(): NameConstraintsJson {
+    const object: NameConstraintsJson = {};
+
+    if (this.permittedSubtrees) {
+      object.permittedSubtrees = Array.from(this.permittedSubtrees, o => o.toJSON());
+    }
+
+    if (this.excludedSubtrees) {
+      object.excludedSubtrees = Array.from(this.excludedSubtrees, o => o.toJSON());
+    }
+
+    return object;
+  }
+
+}