Initial commit

node_modules/neo4j-driver/lib/v1/internal/features.js

@@ -0,0 +1,66 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+/**
+ * Copyright (c) 2002-2018 "Neo4j,"
+ * Neo4j Sweden AB [http://neo4j.com]
+ *
+ * This file is part of Neo4j.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Central place to detect feature support for the current platform,
+// expand as needed.
+
+var FEATURES = {
+  trust_on_first_use: function trust_on_first_use() {
+    try {
+      // This is insane. We are verifying that we have a version of getPeerCertificate
+      // that supports reading the whole certificate, eg this commit:
+      // https://github.com/nodejs/node/commit/345c40b6
+      var getPeerCertificateFunction = require('tls').TLSSocket.prototype.getPeerCertificate;
+      var numberOfParameters = getPeerCertificateFunction.length;
+      return numberOfParameters >= 1;
+    } catch (e) {
+      return false;
+    }
+  },
+  trust_all_certificates: function trust_all_certificates() {
+    try {
+      var getPeerCertificateFunction = require('tls').TLSSocket.prototype.getPeerCertificate;
+      return true;
+    } catch (e) {
+      return false;
+    }
+  },
+  dns_lookup: function dns_lookup() {
+    try {
+      var lookupFunction = require('dns').lookup;
+      if (lookupFunction && typeof lookupFunction === 'function') {
+        return true;
+      }
+      return false;
+    } catch (e) {
+      return false;
+    }
+  }
+};
+
+function hasFeature(name) {
+  return FEATURES[name] && FEATURES[name]();
+}
+
+exports.default = hasFeature;