add custom login fcn

caracal.js

@@ -22,6 +22,7 @@ const fileHandlers = require('./handlers/fileHandlers.js');
 const sanitizeBody = require('./handlers/sanitizeHandler.js');
 const DataTransformationHandler = require('./handlers/dataTransformationHandler.js');
 const envEcho = require("./handlers/envEcho.js");
+const customLogin = require("./handlers/customLogin.js");
 
 const mongoDB = require('./service/database');
 const nodemailer = require('nodemailer');
@@ -86,6 +87,7 @@ var HANDLERS = {
   "proxyHandler": proxyHandler,
   "writeFile": fileHandlers.writeFile,
   "envEcho": envEcho,
+  "customLogin": customLogin,
   "iipHandler": function() {
     return iipHandler;
   },

handlers/customLogin.js

@@ -0,0 +1,26 @@
+var jwt = require('jsonwebtoken');
+
+var EXPIRY = process.env.EXPIRY || '1d';
+
+
+function customLogin(usernameField, usertypeField) {
+  return function(req, res) {
+    let token = {};
+    // get user id from env
+    username = process.env[usernameField] || "unknown user";
+    token.sub = username;
+    token.email = username;
+    token.name = username;
+    usertype = process.env[usertypeField];
+    token.userType = usertype || "Participant";
+    // generate token with this info
+    // return the token
+    signedToken = jwt.sign(data, "precision-fda-not-secure-token", {
+      algorithm: 'RS256',
+      expiresIn: EXPIRY,
+    });
+    res.json({"token": signedToken});
+  };
+}
+
+module.expoers = customLogin;