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controller.ts
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controller.ts
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import {
ActionConstraint,
ControllerMessenger,
EventConstraint,
} from '@metamask/base-controller';
import { PermissionConstraint } from '@metamask/permission-controller';
import { SnapCaveatType } from '@metamask/snaps-utils';
import {
getPersistedSnapObject,
getTruncatedSnap,
MOCK_ORIGIN,
MOCK_SNAP_ID,
} from '@metamask/snaps-utils/test-utils';
import {
SubjectMetadata,
SubjectType,
} from '@metamask/subject-metadata-controller';
import { CronjobControllerActions, CronjobControllerEvents } from '../cronjob';
import {
AllowedActions,
AllowedEvents,
CheckSnapBlockListArg,
PersistedSnapControllerState,
SnapController,
SnapControllerActions,
SnapControllerEvents,
SnapEndowments,
} from '../snaps';
import { MOCK_CRONJOB_PERMISSION } from './cronjob';
import { getNodeEES, getNodeEESMessenger } from './execution-environment';
const asyncNoOp = async () => Promise.resolve();
// These types are extracted from `@metamask/controllers`. Ideally they would
// be exported from there, but they are not.
type ActionHandler<Action, ActionType> = (
...args: ExtractActionParameters<Action, ActionType>
) => ExtractActionResponse<Action, ActionType>;
type ExtractActionParameters<Action, T> = Action extends {
type: T;
handler: (...args: infer H) => any;
}
? H
: never;
type ExtractActionResponse<Action, T> = Action extends {
type: T;
handler: (...args: any) => infer H;
}
? H
: never;
/**
* A controller messenger, that allows overwriting the action handlers, without
* the need to call `unregisterActionHandler` first.
*/
export class MockControllerMessenger<
Action extends ActionConstraint,
Event extends EventConstraint,
> extends ControllerMessenger<Action, Event> {
/**
* Registers an action handler for the given action type. If an action handler
* already exists for the given action type, it will be overwritten.
*
* @param actionType - The action type to register the handler for.
* @param handler - The action handler to register.
*/
registerActionHandler<T extends Action['type']>(
actionType: T,
handler: ActionHandler<Action, T>,
) {
super.unregisterActionHandler(actionType);
super.registerActionHandler(actionType, handler);
}
}
export const MOCK_SNAP_SUBJECT_METADATA: SubjectMetadata = {
origin: MOCK_SNAP_ID,
subjectType: SubjectType.Snap,
name: 'foo',
extensionId: 'bar',
iconUrl: 'baz',
};
export const MOCK_DAPP_SUBJECT_METADATA: SubjectMetadata = {
origin: MOCK_ORIGIN,
subjectType: SubjectType.Website,
name: 'foo',
extensionId: 'bar',
iconUrl: 'baz',
};
export const MOCK_RPC_ORIGINS_PERMISSION: PermissionConstraint = {
caveats: [
{ type: SnapCaveatType.RpcOrigin, value: { snaps: true, dapps: false } },
],
date: 1664187844588,
id: 'izn0WGUO8cvq_jqvLQuQP',
invoker: MOCK_SNAP_ID,
parentCapability: SnapEndowments.Rpc,
};
export const MOCK_DAPPS_RPC_ORIGINS_PERMISSION: PermissionConstraint = {
caveats: [
{ type: SnapCaveatType.RpcOrigin, value: { snaps: false, dapps: true } },
],
date: 1664187844588,
id: 'izn0WGUO8cvq_jqvLQuQP',
invoker: MOCK_SNAP_ID,
parentCapability: SnapEndowments.Rpc,
};
export const getControllerMessenger = () => {
const messenger = new MockControllerMessenger<
SnapControllerActions | AllowedActions,
SnapControllerEvents | AllowedEvents
>();
messenger.registerActionHandler(
'PermissionController:hasPermission',
(permission) => {
return permission !== SnapEndowments.LongRunning;
},
);
messenger.registerActionHandler('PermissionController:hasPermissions', () => {
return true;
});
messenger.registerActionHandler(
'ApprovalController:addRequest',
async (request) => {
return Promise.resolve(request.requestData);
},
);
messenger.registerActionHandler(
'PermissionController:getEndowments',
async () => {
return Promise.resolve(['ethereum']);
},
);
messenger.registerActionHandler(
'PermissionController:grantPermissions',
() => ({}),
);
messenger.registerActionHandler(
'PermissionController:revokePermissions',
() => ({}),
);
messenger.registerActionHandler(
'PermissionController:revokeAllPermissions',
() => ({}),
);
messenger.registerActionHandler(
'PermissionController:revokePermissionForAllSubjects',
() => ({}),
);
messenger.registerActionHandler(
'PermissionController:getPermissions',
() => ({
[SnapEndowments.Rpc]: MOCK_RPC_ORIGINS_PERMISSION,
}),
);
messenger.registerActionHandler(
'SubjectMetadataController:getSubjectMetadata',
() => MOCK_SNAP_SUBJECT_METADATA,
);
messenger.registerActionHandler('ExecutionService:executeSnap', asyncNoOp);
messenger.registerActionHandler('ExecutionService:terminateSnap', asyncNoOp);
jest.spyOn(messenger, 'call');
return messenger;
};
export const getSnapControllerMessenger = (
messenger: ReturnType<
typeof getControllerMessenger
> = getControllerMessenger(),
) => {
const snapControllerMessenger = messenger.getRestricted<
'SnapController',
SnapControllerActions['type'] | AllowedActions['type'],
SnapControllerEvents['type'] | AllowedEvents['type']
>({
name: 'SnapController',
allowedEvents: [
'ExecutionService:unhandledError',
'ExecutionService:outboundRequest',
'ExecutionService:outboundResponse',
'SnapController:snapAdded',
'SnapController:snapBlocked',
'SnapController:snapInstalled',
'SnapController:snapUnblocked',
'SnapController:snapUpdated',
'SnapController:snapRemoved',
'SnapController:stateChange',
],
allowedActions: [
'ApprovalController:addRequest',
'ExecutionService:executeSnap',
'ExecutionService:terminateAllSnaps',
'ExecutionService:terminateSnap',
'ExecutionService:handleRpcRequest',
'PermissionController:getEndowments',
'PermissionController:hasPermission',
'PermissionController:hasPermissions',
'PermissionController:getPermissions',
'PermissionController:grantPermissions',
'PermissionController:revokePermissions',
'PermissionController:revokeAllPermissions',
'PermissionController:revokePermissionForAllSubjects',
'SnapController:get',
'SnapController:handleRequest',
'SnapController:getSnapState',
'SnapController:has',
'SnapController:updateSnapState',
'SnapController:clearSnapState',
'SnapController:updateBlockedSnaps',
'SnapController:enable',
'SnapController:disable',
'SnapController:remove',
'SnapController:getAll',
'SnapController:getPermitted',
'SnapController:install',
'SnapController:removeSnapError',
'SnapController:incrementActiveReferences',
'SnapController:decrementActiveReferences',
'SubjectMetadataController:getSubjectMetadata',
],
});
jest.spyOn(snapControllerMessenger, 'call');
return snapControllerMessenger;
};
export type SnapControllerConstructorParams = ConstructorParameters<
typeof SnapController
>[0];
export type PartialSnapControllerConstructorParams = Partial<
Omit<ConstructorParameters<typeof SnapController>[0], 'state'> & {
state: Partial<SnapControllerConstructorParams['state']>;
}
>;
export const getSnapControllerOptions = (
opts?: PartialSnapControllerConstructorParams,
) => {
const options = {
environmentEndowmentPermissions: [],
closeAllConnections: jest.fn(),
getAppKey: jest
.fn()
.mockImplementation((snapId, appKeyType) => `${appKeyType}:${snapId}`),
messenger: getSnapControllerMessenger(),
featureFlags: { dappsCanUpdateSnaps: true },
checkBlockList: jest
.fn()
.mockImplementation(async (snaps: CheckSnapBlockListArg) =>
Promise.resolve(
Object.keys(snaps).reduce(
(acc, snapId) => ({ ...acc, [snapId]: { blocked: false } }),
{},
),
),
),
state: undefined,
...opts,
} as SnapControllerConstructorParams;
options.state = {
snaps: {},
snapErrors: {},
snapStates: {},
...options.state,
};
return options;
};
export type GetSnapControllerWithEESOptionsParam = Omit<
PartialSnapControllerConstructorParams,
'messenger'
> & { rootMessenger?: ReturnType<typeof getControllerMessenger> };
export const getSnapControllerWithEESOptions = ({
rootMessenger = getControllerMessenger(),
...options
}: GetSnapControllerWithEESOptionsParam = {}) => {
const snapControllerMessenger = getSnapControllerMessenger(rootMessenger);
return {
environmentEndowmentPermissions: [],
closeAllConnections: jest.fn(),
getAppKey: jest
.fn()
.mockImplementation((snapId, appKeyType) => `${appKeyType}:${snapId}`),
messenger: snapControllerMessenger,
rootMessenger,
...options,
} as SnapControllerConstructorParams & {
rootMessenger: ReturnType<typeof getControllerMessenger>;
};
};
export const getSnapController = (options = getSnapControllerOptions()) => {
return new SnapController(options);
};
export const getSnapControllerWithEES = (
options = getSnapControllerWithEESOptions(),
service?: ReturnType<typeof getNodeEES>,
) => {
const _service =
service ?? getNodeEES(getNodeEESMessenger(options.rootMessenger));
const controller = new SnapController(options);
return [controller, _service] as const;
};
export const getPersistedSnapsState = (
...snaps: PersistedSnapControllerState['snaps'][string][]
): PersistedSnapControllerState['snaps'] => {
return (snaps.length > 0 ? snaps : [getPersistedSnapObject()]).reduce<
PersistedSnapControllerState['snaps']
>((snapsState, snapObject) => {
snapsState[snapObject.id] = snapObject;
return snapsState;
}, {});
};
// Mock controller messenger for Cronjob Controller
export const getRootCronjobControllerMessenger = () => {
const messenger = new MockControllerMessenger<
CronjobControllerActions | AllowedActions,
CronjobControllerEvents | AllowedEvents
>();
jest.spyOn(messenger, 'call');
return messenger;
};
export const getRestrictedCronjobControllerMessenger = (
messenger: ReturnType<
typeof getRootCronjobControllerMessenger
> = getRootCronjobControllerMessenger(),
mocked = true,
) => {
const cronjobControllerMessenger = messenger.getRestricted<
'CronjobController',
CronjobControllerActions['type'] | AllowedActions['type'],
CronjobControllerEvents['type'] | AllowedEvents['type']
>({
name: 'CronjobController',
allowedEvents: [
'SnapController:snapInstalled',
'SnapController:snapUpdated',
'SnapController:snapRemoved',
],
allowedActions: [
'PermissionController:hasPermission',
'PermissionController:getPermissions',
'SnapController:getAll',
'SnapController:handleRequest',
],
});
if (mocked) {
messenger.registerActionHandler(
'PermissionController:hasPermission',
(permission) => {
return permission !== SnapEndowments.LongRunning;
},
);
messenger.registerActionHandler(
'PermissionController:getPermissions',
() => {
return { [SnapEndowments.Cronjob]: MOCK_CRONJOB_PERMISSION };
},
);
messenger.registerActionHandler('SnapController:getAll', () => {
return [getTruncatedSnap()];
});
messenger.registerActionHandler('SnapController:handleRequest', asyncNoOp);
}
return cronjobControllerMessenger;
};