chore: add warn log for sanitisation for overridden config

ilc/server/app.js

@@ -119,6 +119,7 @@ module.exports = (registryService, pluginManager, context) => {
         const overrideConfigs = parseOverrideConfig(
             req.headers.cookie,
             registryConfig.settings.overrideConfigTrustedOrigins,
+            logger,
         );
         // Excluding LDE related transactions from NewRelic
         if (overrideConfigs !== null) {

ilc/server/tailor/parse-override-config.js

@@ -42,17 +42,23 @@ const isTrustedOrigin = (link, trustedOrigins) => {
     });
 };
 
-const sanitizeSpoofedLinks = (obj, trustedOrigins) => {
+const sanitizeSpoofedLinks = (obj, trustedOrigins, logger) => {
     Object.entries(obj).forEach(([key, value]) => {
         if (_.isPlainObject(value)) {
-            sanitizeSpoofedLinks(value, trustedOrigins);
+            sanitizeSpoofedLinks(value, trustedOrigins, logger);
         } else if (typeof value === 'string' && isUrl(value.trim())) {
-            !isPrivateNetwork(value) && !isTrustedOrigin(value, trustedOrigins) && delete obj[key];
+            if (!isPrivateNetwork(value) && !isTrustedOrigin(value, trustedOrigins)) {
+                if (logger) {
+                    logger.warn(`Sanitized untrusted url from override config. key = ${key}, value = ${value}`);
+                }
+
+                delete obj[key];
+            }
         }
     });
 };
 
-module.exports = (cookie, trustedOrigins) => {
+module.exports = (cookie, trustedOrigins, logger) => {
     try {
         let overrideConfig =
             typeof cookie === 'string' && cookie.split(';').find((n) => n.trim().startsWith('ILC-overrideConfig'));
@@ -75,11 +81,11 @@ module.exports = (cookie, trustedOrigins) => {
                 typeof trustedOrigins === 'string' && trustedOrigins.split(',').map((n) => n.trim());
 
             if (overrideConfig.apps) {
-                sanitizeSpoofedLinks(overrideConfig.apps, parsedTrustedOrigin);
+                sanitizeSpoofedLinks(overrideConfig.apps, parsedTrustedOrigin, logger);
             }
 
             if (overrideConfig.sharedLibs) {
-                sanitizeSpoofedLinks(overrideConfig.sharedLibs, parsedTrustedOrigin);
+                sanitizeSpoofedLinks(overrideConfig.sharedLibs, parsedTrustedOrigin, logger);
             }
         }
 

ilc/server/tailor/parse-override-config.spec.js

@@ -1,4 +1,5 @@
 import { expect } from 'chai';
+import sinon from 'sinon';
 const LZUTF8 = require('lzutf8');
 const parseOverrideConfig = require('./parse-override-config');
 
@@ -283,8 +284,12 @@ describe('overrideConfig', () => {
         it('should sanitize domain names', async () => {
             const ip = 'foo.com';
             const exampleCookies = getExampleCookies(ip);
+            const logger = {
+                warn: sinon.spy(),
+            };
 
-            expect(parseOverrideConfig(exampleCookies)).deep.equal(getSanitizedObject());
+            expect(parseOverrideConfig(exampleCookies, undefined, logger)).deep.equal(getSanitizedObject());
+            expect(logger.warn.called).to.be.true;
         });
 
         it('should sanitize url w/ spaces', async () => {