1 files changed, 39 insertions, 0 deletions
diff --git a/src/server/api/authenticate.ts b/src/server/api/authenticate.ts
new file mode 100644
index 0000000000..836fb7cfe8
--- /dev/null
+++ b/src/server/api/authenticate.ts
@@ -0,0 +1,39 @@
+import App, { IApp } from '../../models/app';
+import { default as User, IUser } from '../../models/user';
+import AccessToken from '../../models/access-token';
+import isNativeToken from './common/is-native-token';
+
+export default (token: string) => new Promise<[IUser, IApp]>(async (resolve, reject) => {
+	if (token == null) {
+		resolve([null, null]);
+		return;
+	}
+
+	if (isNativeToken(token)) {
+		// Fetch user
+		const user: IUser = await User
+			.findOne({ token });
+
+		if (user === null) {
+			return reject('user not found');
+		}
+
+		resolve([user, null]);
+	} else {
+		const accessToken = await AccessToken.findOne({
+			hash: token.toLowerCase()
+		});
+
+		if (accessToken === null) {
+			return reject('invalid signature');
+		}
+
+		const app = await App
+			.findOne({ _id: accessToken.appId });
+
+		const user = await User
+			.findOne({ _id: accessToken.userId });
+
+		resolve([user, app]);
+	}
+});