Added updateCaveat action

packages/permission-controller/src/PermissionController.test.ts

@@ -4654,6 +4654,67 @@ describe('PermissionController', () => {
 
       expect(requestPermissionsSpy).toHaveBeenCalledTimes(1);
     });
+
+    it('action: PermissionController:updateCaveat', async () => {
+      const messenger = getUnrestrictedMessenger();
+      const state = {
+        subjects: {
+          'metamask.io': {
+            origin: 'metamask.io',
+            permissions: {
+              wallet_getSecretArray: {
+                id: 'escwEx9JrOxGZKZk3RkL4',
+                parentCapability: 'wallet_getSecretArray',
+                invoker: 'metamask.io',
+                caveats: [
+                  { type: CaveatTypes.filterArrayResponse, value: ['bar'] },
+                ],
+                date: 1632618373085,
+              },
+            },
+          },
+        },
+      };
+      const options = getPermissionControllerOptions({
+        messenger: getPermissionControllerMessenger(messenger),
+        state,
+      });
+
+      const controller = new PermissionController<
+        DefaultPermissionSpecifications,
+        DefaultCaveatSpecifications
+      >(options);
+
+      const updateCaveatSpy = jest.spyOn(controller, 'updateCaveat');
+
+      await messenger.call(
+        'PermissionController:updateCaveat',
+        'metamask.io',
+        'wallet_getSecretArray',
+        CaveatTypes.filterArrayResponse,
+        ['baz'],
+      );
+
+      expect(updateCaveatSpy).toHaveBeenCalledTimes(1);
+      expect(controller.state).toStrictEqual({
+        subjects: {
+          'metamask.io': {
+            origin: 'metamask.io',
+            permissions: {
+              wallet_getSecretArray: {
+                id: 'escwEx9JrOxGZKZk3RkL4',
+                parentCapability: 'wallet_getSecretArray',
+                invoker: 'metamask.io',
+                caveats: [
+                  { type: CaveatTypes.filterArrayResponse, value: ['baz'] },
+                ],
+                date: 1632618373085,
+              },
+            },
+          },
+        },
+      });
+    });
   });
 
   describe('permission middleware', () => {

packages/permission-controller/src/PermissionController.ts

@@ -258,6 +258,14 @@ export type RevokePermissionForAllSubjects = {
   handler: GenericPermissionController['revokePermissionForAllSubjects'];
 };
 
+/**
+ * Updates a caveat value for a specified caveat type belonging to a specific target and origin.
+ */
+export type UpdateCaveat = {
+  type: `${typeof controllerName}:updateCaveat`;
+  handler: GenericPermissionController['updateCaveat'];
+};
+
 /**
  * Clears all permissions from the {@link PermissionController}.
  */
@@ -289,7 +297,8 @@ export type PermissionControllerActions =
   | RequestPermissions
   | RevokeAllPermissions
   | RevokePermissionForAllSubjects
-  | RevokePermissions;
+  | RevokePermissions
+  | UpdateCaveat;
 
 /**
  * The generic state change event of the {@link PermissionController}.
@@ -755,6 +764,18 @@ export class PermissionController<
       `${controllerName}:revokePermissions` as const,
       this.revokePermissions.bind(this),
     );
+
+    this.messagingSystem.registerActionHandler(
+      `${controllerName}:updateCaveat` as const,
+      (origin, target, caveatType, caveatValue) => {
+        this.updateCaveat(
+          origin,
+          target,
+          caveatType as ExtractAllowedCaveatTypes<ControllerPermissionSpecification>,
+          caveatValue,
+        );
+      },
+    );
   }
 
   /**