Initial commit

node_modules/validator/lib/isIP.js

@@ -0,0 +1,86 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = isIP;
+
+var _assertString = _interopRequireDefault(require("./util/assertString"));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var ipv4Maybe = /^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/;
+var ipv6Block = /^[0-9A-F]{1,4}$/i;
+
+function isIP(str) {
+  var version = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
+  (0, _assertString.default)(str);
+  version = String(version);
+
+  if (!version) {
+    return isIP(str, 4) || isIP(str, 6);
+  } else if (version === '4') {
+    if (!ipv4Maybe.test(str)) {
+      return false;
+    }
+
+    var parts = str.split('.').sort(function (a, b) {
+      return a - b;
+    });
+    return parts[3] <= 255;
+  } else if (version === '6') {
+    var blocks = str.split(':');
+    var foundOmissionBlock = false; // marker to indicate ::
+    // At least some OS accept the last 32 bits of an IPv6 address
+    // (i.e. 2 of the blocks) in IPv4 notation, and RFC 3493 says
+    // that '::ffff:a.b.c.d' is valid for IPv4-mapped IPv6 addresses,
+    // and '::a.b.c.d' is deprecated, but also valid.
+
+    var foundIPv4TransitionBlock = isIP(blocks[blocks.length - 1], 4);
+    var expectedNumberOfBlocks = foundIPv4TransitionBlock ? 7 : 8;
+
+    if (blocks.length > expectedNumberOfBlocks) {
+      return false;
+    } // initial or final ::
+
+
+    if (str === '::') {
+      return true;
+    } else if (str.substr(0, 2) === '::') {
+      blocks.shift();
+      blocks.shift();
+      foundOmissionBlock = true;
+    } else if (str.substr(str.length - 2) === '::') {
+      blocks.pop();
+      blocks.pop();
+      foundOmissionBlock = true;
+    }
+
+    for (var i = 0; i < blocks.length; ++i) {
+      // test for a :: which can not be at the string start/end
+      // since those cases have been handled above
+      if (blocks[i] === '' && i > 0 && i < blocks.length - 1) {
+        if (foundOmissionBlock) {
+          return false; // multiple :: in address
+        }
+
+        foundOmissionBlock = true;
+      } else if (foundIPv4TransitionBlock && i === blocks.length - 1) {// it has been checked before that the last
+        // block is a valid IPv4 address
+      } else if (!ipv6Block.test(blocks[i])) {
+        return false;
+      }
+    }
+
+    if (foundOmissionBlock) {
+      return blocks.length >= 1;
+    }
+
+    return blocks.length === expectedNumberOfBlocks;
+  }
+
+  return false;
+}
+
+module.exports = exports.default;
+module.exports.default = exports.default;