feat: Add permissions package (no-changelog) (#7650)

Github issue / Community forum post (link here to close automatically):

packages/@n8n/permissions/.eslintrc.js

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+const sharedOptions = require('@n8n_io/eslint-config/shared');
+
+/**
+ * @type {import('@types/eslint').ESLint.ConfigData}
+ */
+module.exports = {
+	extends: ['@n8n_io/eslint-config/base'],
+
+	...sharedOptions(__dirname),
+};

packages/@n8n/permissions/jest.config.js

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+/** @type {import('jest').Config} */
+module.exports = require('../../../jest.config');

packages/@n8n/permissions/package.json

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+{
+  "name": "@n8n/permissions",
+  "version": "0.0.1",
+  "scripts": {
+    "clean": "rimraf dist .turbo",
+    "dev": "pnpm watch",
+    "typecheck": "tsc",
+    "build": "tsc -p tsconfig.build.json",
+    "format": "prettier --write . --ignore-path ../../../.prettierignore",
+    "lint": "eslint . --quiet",
+    "lintfix": "eslint . --fix",
+    "watch": "tsc -p tsconfig.build.json --watch",
+    "test": "jest",
+    "test:dev": "jest --watch"
+  },
+  "main": "dist/index.js",
+  "module": "src/index.ts",
+  "types": "dist/index.d.ts",
+  "files": [
+    "dist/**/*"
+  ]
+}

packages/@n8n/permissions/src/hasScope.ts

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+import type { Scope, ScopeLevels } from './types';
+
+export type HasScopeMode = 'oneOf' | 'allOf';
+export interface HasScopeOptions {
+	mode: HasScopeMode;
+}
+
+export function hasScope(
+	scope: Scope | Scope[],
+	userScopes: ScopeLevels,
+	options?: HasScopeOptions,
+): boolean;
+export function hasScope(
+	scope: Scope | Scope[],
+	userScopes: Pick<ScopeLevels, 'global'>,
+	options?: HasScopeOptions,
+): boolean;
+export function hasScope(
+	scope: Scope | Scope[],
+	userScopes: Omit<ScopeLevels, 'resource'>,
+	options?: HasScopeOptions,
+): boolean;
+export function hasScope(
+	scope: Scope | Scope[],
+	userScopes: Pick<ScopeLevels, 'global'> & Partial<ScopeLevels>,
+	options: HasScopeOptions = { mode: 'oneOf' },
+): boolean {
+	if (!Array.isArray(scope)) {
+		scope = [scope];
+	}
+
+	const userScopeSet = new Set([
+		...userScopes.global,
+		...(userScopes.project ?? []),
+		...(userScopes.resource ?? []),
+	]);
+
+	if (options.mode === 'allOf') {
+		return scope.every((s) => userScopeSet.has(s));
+	}
+
+	return scope.some((s) => userScopeSet.has(s));
+}

packages/@n8n/permissions/src/index.ts

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+export type * from './types';
+export * from './hasScope';

packages/@n8n/permissions/src/types.ts

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+export type DefaultOperations = 'create' | 'read' | 'update' | 'delete' | 'list';
+export type Resource =
+	| 'workflow'
+	| 'user'
+	| 'credential'
+	| 'variable'
+	| 'sourceControl'
+	| 'externalSecretsStore';
+
+export type ResourceScope<
+	R extends Resource,
+	Operations extends string = DefaultOperations,
+> = `${R}:${Operations}`;
+export type WildcardScope = `${Resource}:*` | '*';
+
+export type WorkflowScope = ResourceScope<'workflow'>;
+export type UserScope = ResourceScope<'user'>;
+export type CredentialScope = ResourceScope<'credential'>;
+export type VariableScope = ResourceScope<'variable'>;
+export type SourceControlScope = ResourceScope<'sourceControl', 'pull' | 'push' | 'manage'>;
+export type ExternalSecretStoreScope = ResourceScope<
+	'externalSecretsStore',
+	DefaultOperations | 'refresh'
+>;
+
+export type Scope =
+	| WorkflowScope
+	| UserScope
+	| CredentialScope
+	| VariableScope
+	| SourceControlScope
+	| ExternalSecretStoreScope;
+
+export type ScopeLevel = 'global' | 'project' | 'resource';
+export type ScopeLevels = Record<ScopeLevel, Scope[]>;

packages/@n8n/permissions/test/hasScope.test.ts

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+import { hasScope } from '@/hasScope';
+import type { Scope } from '@/types';
+
+const ownerPermissions: Scope[] = [
+	'workflow:create',
+	'workflow:read',
+	'workflow:update',
+	'workflow:delete',
+	'workflow:list',
+	'user:create',
+	'user:read',
+	'user:update',
+	'user:delete',
+	'user:list',
+	'credential:create',
+	'credential:read',
+	'credential:update',
+	'credential:delete',
+	'credential:list',
+	'variable:create',
+	'variable:read',
+	'variable:update',
+	'variable:delete',
+	'variable:list',
+];
+const memberPermissions: Scope[] = ['user:list', 'variable:list', 'variable:read'];
+
+describe('hasScope', () => {
+	test('should work with a single permission on both modes with only global scopes', () => {
+		expect(
+			hasScope(
+				'user:list',
+				{
+					global: memberPermissions,
+				},
+				{ mode: 'oneOf' },
+			),
+		).toBe(true);
+
+		expect(
+			hasScope(
+				'user:list',
+				{
+					global: memberPermissions,
+				},
+				{ mode: 'allOf' },
+			),
+		).toBe(true);
+
+		expect(
+			hasScope(
+				'workflow:read',
+				{
+					global: memberPermissions,
+				},
+				{ mode: 'oneOf' },
+			),
+		).toBe(false);
+
+		expect(
+			hasScope(
+				'workflow:read',
+				{
+					global: memberPermissions,
+				},
+				{ mode: 'allOf' },
+			),
+		).toBe(false);
+	});
+
+	test('should work with oneOf mode', () => {
+		expect(
+			hasScope(['workflow:create', 'workflow:read'], {
+				global: ownerPermissions,
+			}),
+		).toBe(true);
+
+		expect(
+			hasScope(['workflow:create', 'workflow:read'], {
+				global: memberPermissions,
+			}),
+		).toBe(false);
+	});
+
+	test('should work with allOf mode', () => {
+		expect(
+			hasScope(
+				['workflow:create', 'workflow:read'],
+				{
+					global: ownerPermissions,
+				},
+				{ mode: 'allOf' },
+			),
+		).toBe(true);
+
+		expect(
+			hasScope(
+				['workflow:create', 'workflow:read'],
+				{
+					global: memberPermissions,
+				},
+				{ mode: 'allOf' },
+			),
+		).toBe(false);
+
+		expect(
+			hasScope(
+				['workflow:create', 'user:list'],
+				{
+					global: memberPermissions,
+				},
+				{ mode: 'allOf' },
+			),
+		).toBe(false);
+	});
+});

packages/@n8n/permissions/tsconfig.build.json

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+{
+	"extends": ["./tsconfig.json", "../../../tsconfig.build.json"],
+	"compilerOptions": {
+		"rootDir": "src",
+		"outDir": "dist",
+		"tsBuildInfoFile": "dist/build.tsbuildinfo"
+	},
+	"include": ["src/**/*.ts"],
+	"exclude": ["test/**"]
+}

packages/@n8n/permissions/tsconfig.json

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+{
+	"extends": "../../../tsconfig.json",
+	"compilerOptions": {
+		"rootDir": ".",
+		"types": ["node", "jest"],
+		"composite": true,
+		"noEmit": true,
+		"baseUrl": "src",
+		"paths": {
+			"@/*": ["./*"]
+		},
+		"tsBuildInfoFile": "dist/typecheck.tsbuildinfo"
+	},
+	"include": ["src/**/*.ts", "test/**/*.ts"]
+}