Initial commit

src/util/token.ts

@@ -0,0 +1,52 @@
+/*
+ * server component for the TimeLimit App
+ * Copyright (C) 2019 Jonas Lochmann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, version 3 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import * as TokenGenerator from 'tokgen'
+
+const authTokenGenerator = new TokenGenerator({
+  length: 32,
+  chars: 'a-zA-Z0-9'
+})
+
+export const generateAuthToken = () => authTokenGenerator.generate()
+
+const idWithinFamilyGenerator = new TokenGenerator({
+  length: 6,
+  chars: 'a-zA-Z0-9'
+})
+
+export const generateIdWithinFamily = () => idWithinFamilyGenerator.generate()
+export const isIdWithinFamily = (id: string) => id.length === 6 && /^[a-zA-Z0-9]+$/.test(id)
+export const assertIdWithinFamily = (id: string) => {
+  if (!isIdWithinFamily(id)) {
+    throw new Error('invalid id within family')
+  }
+}
+
+const versionIdGenerator = new TokenGenerator({
+  length: 4,
+  chars: 'a-zA-Z0-9'
+})
+
+export const generateVersionId = () => versionIdGenerator.generate()
+
+const familyIdGenerator = new TokenGenerator({
+  length: 10,
+  chars: 'a-zA-Z0-9'
+})
+
+export const generateFamilyId = () => familyIdGenerator.generate()