tls: replace forEach with for

PR-URL: nodejs#15053
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/_tls_common.js

@@ -73,50 +73,60 @@ exports.createSecureContext = function createSecureContext(options, context) {
 
   var c = new SecureContext(options.secureProtocol, secureOptions, context);
   var i;
+  var val;
 
   if (context) return c;
 
   // NOTE: It's important to add CA before the cert to be able to load
   // cert's issuer in C++ code.
-  if (options.ca) {
-    if (Array.isArray(options.ca)) {
-      options.ca.forEach((ca) => {
-        validateKeyCert(ca, 'ca');
-        c.context.addCACert(ca);
-      });
+  var ca = options.ca;
+  if (ca !== undefined) {
+    if (Array.isArray(ca)) {
+      for (i = 0; i < ca.length; ++i) {
+        val = ca[i];
+        validateKeyCert(val, 'ca');
+        c.context.addCACert(val);
+      }
     } else {
-      validateKeyCert(options.ca, 'ca');
-      c.context.addCACert(options.ca);
+      validateKeyCert(ca, 'ca');
+      c.context.addCACert(ca);
     }
   } else {
     c.context.addRootCerts();
   }
 
-  if (options.cert) {
-    if (Array.isArray(options.cert)) {
-      options.cert.forEach((cert) => {
-        validateKeyCert(cert, 'cert');
-        c.context.setCert(cert);
-      });
+  var cert = options.cert;
+  if (cert !== undefined) {
+    if (Array.isArray(cert)) {
+      for (i = 0; i < cert.length; ++i) {
+        val = cert[i];
+        validateKeyCert(val, 'cert');
+        c.context.setCert(val);
+      }
     } else {
-      validateKeyCert(options.cert, 'cert');
-      c.context.setCert(options.cert);
+      validateKeyCert(cert, 'cert');
+      c.context.setCert(cert);
     }
   }
 
   // NOTE: It is important to set the key after the cert.
   // `ssl_set_pkey` returns `0` when the key does not match the cert, but
   // `ssl_set_cert` returns `1` and nullifies the key in the SSL structure
   // which leads to the crash later on.
-  if (options.key) {
-    if (Array.isArray(options.key)) {
-      options.key.forEach((k) => {
-        validateKeyCert(k.pem || k, 'key');
-        c.context.setKey(k.pem || k, k.passphrase || options.passphrase);
-      });
+  var key = options.key;
+  var passphrase = options.passphrase;
+  if (key !== undefined) {
+    if (Array.isArray(key)) {
+      for (i = 0; i < key.length; ++i) {
+        val = key[i];
+        // eslint-disable-next-line eqeqeq
+        const pem = (val != undefined && val.pem !== undefined ? val.pem : val);
+        validateKeyCert(pem, 'key');
+        c.context.setKey(pem, val.passphrase || passphrase);
+      }
     } else {
-      validateKeyCert(options.key, 'key');
-      c.context.setKey(options.key, options.passphrase);
+      validateKeyCert(key, 'key');
+      c.context.setKey(key, passphrase);
     }
   }
 
@@ -152,7 +162,6 @@ exports.createSecureContext = function createSecureContext(options, context) {
 
   if (options.pfx) {
     var pfx = options.pfx;
-    var passphrase = options.passphrase;
 
     if (!crypto)
       crypto = require('crypto');