Rename server => modules

modules/AuthAPI.js

@@ -0,0 +1,98 @@
+const crypto = require("crypto");
+const jwt = require("jsonwebtoken");
+
+const db = require("./utils/data");
+const secretKey = require("./secretKey");
+
+function getCurrentSeconds() {
+  return Math.floor(Date.now() / 1000);
+}
+
+function createTokenId() {
+  return crypto.randomBytes(16).toString("hex");
+}
+
+function createToken(scopes = {}) {
+  return new Promise((resolve, reject) => {
+    const payload = {
+      jti: createTokenId(),
+      iss: "https://unpkg.com",
+      iat: getCurrentSeconds(),
+      scopes
+    };
+
+    jwt.sign(
+      payload,
+      secretKey.private,
+      { algorithm: "RS256" },
+      (error, token) => {
+        if (error) {
+          reject(error);
+        } else {
+          resolve(token);
+        }
+      }
+    );
+  });
+}
+
+const revokedTokensSet = "revoked-tokens";
+
+function verifyToken(token) {
+  return new Promise((resolve, reject) => {
+    const options = { algorithms: ["RS256"] };
+
+    jwt.verify(token, secretKey.public, options, (error, payload) => {
+      if (error) {
+        reject(error);
+      } else {
+        if (payload.jti) {
+          db.sismember(revokedTokensSet, payload.jti, (error, value) => {
+            if (error) {
+              reject(error);
+            } else {
+              resolve(value === 0 ? payload : null);
+            }
+          });
+        } else {
+          resolve(null);
+        }
+      }
+    });
+  });
+}
+
+function revokeToken(token) {
+  return verifyToken(token).then(payload => {
+    if (payload) {
+      return new Promise((resolve, reject) => {
+        db.sadd(revokedTokensSet, payload.jti, error => {
+          if (error) {
+            reject(error);
+          } else {
+            resolve();
+          }
+        });
+      });
+    }
+  });
+}
+
+function removeAllRevokedTokens() {
+  return new Promise((resolve, reject) => {
+    db.del(revokedTokensSet, error => {
+      if (error) {
+        reject(error);
+      } else {
+        resolve();
+      }
+    });
+  });
+}
+
+module.exports = {
+  createToken,
+  verifyToken,
+  revokeToken,
+  removeAllRevokedTokens
+};