add support for http basic auth (#1706)

* add support for http basic auth

* update http auth per flovilmart feedback

Author: hmoqhim

spec/index.spec.js

@@ -12,6 +12,30 @@ describe('server', () => {
     expect(setServerConfiguration.bind(undefined, { appId: 'myId', masterKey: 'mk' })).toThrow('You must provide a serverURL!');
     done();
   });
+	
+  it('support http basic authentication with masterkey', done => {
+    request.get({
+      url: 'http://localhost:8378/1/classes/TestObject',
+      headers: {
+      	'Authorization': 'Basic ' + new Buffer('test:' + 'test').toString('base64')
+      }
+    }, (error, response, body) => {
+      expect(response.statusCode).toEqual(200);
+      done();
+    });
+  });
+  
+  it('support http basic authentication with javascriptKey', done => {
+    request.get({
+      url: 'http://localhost:8378/1/classes/TestObject',
+      headers: {
+      	'Authorization': 'Basic ' + new Buffer('test:javascript-key=' + 'test').toString('base64')
+      }
+    }, (error, response, body) => {
+      expect(response.statusCode).toEqual(200);
+      done();
+    });
+  });
 
   it('fails if database is unreachable', done => {
     setServerConfiguration({

src/middlewares.js

@@ -27,6 +27,14 @@ function handleParseHeaders(req, res, next) {
     dotNetKey: req.get('X-Parse-Windows-Key'),
     restAPIKey: req.get('X-Parse-REST-API-Key')
   };
+  
+  var basicAuth = httpAuth(req);
+  
+  if (basicAuth) {
+    info.appId = basicAuth.appId
+    info.masterKey = basicAuth.masterKey || info.masterKey;
+    info.javascriptKey = basicAuth.javascriptKey || info.javascriptKey;
+  }
 
   if (req.body) {
     // Unity SDK sends a _noBody key which needs to be removed.
@@ -144,6 +152,45 @@ function handleParseHeaders(req, res, next) {
     });
 }
 
+function httpAuth(req) {
+  if (!(req.req || req).headers.authorization)
+    return ;
+
+  var header = (req.req || req).headers.authorization;  
+  var appId, masterKey, javascriptKey;  
+
+  // parse header
+  var authPrefix = 'basic ';
+  
+  var match = header.toLowerCase().indexOf(authPrefix);
+  
+  if (match == 0) {
+    var encodedAuth = header.substring(authPrefix.length, header.length);
+    var credentials = decodeBase64(encodedAuth).split(':');
+    
+    if (credentials.length == 2) {
+      appId = credentials[0];
+      var key = credentials[1];
+    
+      var jsKeyPrefix = 'javascript-key=';
+    
+      var matchKey = key.indexOf(jsKeyPrefix)
+      if (matchKey == 0) {
+        javascriptKey = key.substring(jsKeyPrefix.length, key.length);
+      }
+      else {
+        masterKey = key;
+      }
+    }
+  }
+  
+  return {appId: appId, masterKey: masterKey, javascriptKey: javascriptKey};
+}
+
+function decodeBase64(str) {
+  return new Buffer(str, 'base64').toString()
+}
+
 var allowCrossDomain = function(req, res, next) {
   res.header('Access-Control-Allow-Origin', '*');
   res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,OPTIONS');