parse client ip

lib/policyEvaluator/requestUtils.js

@@ -9,23 +9,18 @@ const ipCheck = require('../ipCheck');
 function getClientIp(request, s3config) {
     const clientIp = request.socket.remoteAddress;
     const requestConfig = s3config ? s3config.requests : {};
-    if (requestConfig && requestConfig.viaProxy) {
+    const { trustedProxyCIDRs, extractClientIPFromHeader } = requestConfig;
     /**
      * if requests are configured to come via proxy,
      * check from config which proxies are to be trusted and
      * which header to be used to extract client IP
      */
-        if (ipCheck.ipMatchCidrList(requestConfig.trustedProxyCIDRs,
-            clientIp)) {
-            const ipFromHeader
-            // eslint-disable-next-line operator-linebreak
-                = request.headers[requestConfig.extractClientIPFromHeader];
+    if (ipCheck.ipMatchCidrList(trustedProxyCIDRs, clientIp)) {
+        const ipFromHeader = request.headers[extractClientIPFromHeader];
         if (ipFromHeader && ipFromHeader.trim().length) {
             return ipFromHeader.split(',')[0].trim();
         }
     }
-    }
-
     return clientIp;
 }
 

tests/unit/policyEvaluator/requestUtils.js

@@ -28,9 +28,9 @@ describe('requestUtils.getClientIp', () => {
         assert.strictEqual(result, testClientIp1);
     });
 
-    it('should not return client Ip address from header ' +
-        'if the request is not forwarded from proxies or ' +
-        'fails ip check', () => {
+    it('should extract client Ip address from x-forwarded-for header ' +
+        'when the header is present and has valid ip address(es) if the ' +
+        'request is not forwarded via proxy', () => {
         const request = new DummyRequest({
             headers: {
                 'x-forwarded-for': [testClientIp1, testProxyIp].join(','),
@@ -42,7 +42,7 @@ describe('requestUtils.getClientIp', () => {
             },
         });
         const result = requestUtils.getClientIp(request, configWithoutProxy);
-        assert.strictEqual(result, testClientIp2);
+        assert.strictEqual(result, testClientIp1);
     });
 
     it('should not return client Ip address from header ' +