08-27-周三_17-09-29

node_modules/is-my-ip-valid/index.js

@@ -0,0 +1,90 @@
+var reIpv4FirstPass = /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/
+
+var reSubnetString = /\/\d{1,3}(?=%|$)/
+var reForwardSlash = /\//
+var reZone = /%.*$/
+var reBadCharacters = /([^0-9a-f:/%])/i
+var reBadAddress = /([0-9a-f]{5,}|:{3,}|[^:]:$|^:[^:]|\/$)/i
+
+function validate4 (input) {
+  if (!(reIpv4FirstPass.test(input))) return false
+
+  var parts = input.split('.')
+
+  if (parts.length !== 4) return false
+
+  if (parts[0][0] === '0' && parts[0].length > 1) return false
+  if (parts[1][0] === '0' && parts[1].length > 1) return false
+  if (parts[2][0] === '0' && parts[2].length > 1) return false
+  if (parts[3][0] === '0' && parts[3].length > 1) return false
+
+  var n0 = Number(parts[0])
+  var n1 = Number(parts[1])
+  var n2 = Number(parts[2])
+  var n3 = Number(parts[3])
+
+  return (n0 >= 0 && n0 < 256 && n1 >= 0 && n1 < 256 && n2 >= 0 && n2 < 256 && n3 >= 0 && n3 < 256)
+}
+
+function validate6 (input) {
+  var withoutSubnet = input.replace(reSubnetString, '')
+  var hasSubnet = (input.length !== withoutSubnet.length)
+
+  // FIXME: this should probably be an option in the future
+  if (hasSubnet) return false
+
+  if (!hasSubnet) {
+    if (reForwardSlash.test(input)) return false
+  }
+
+  var withoutZone = withoutSubnet.replace(reZone, '')
+  var lastPartSeparator = withoutZone.lastIndexOf(':')
+
+  if (lastPartSeparator === -1) return false
+
+  var lastPart = withoutZone.substring(lastPartSeparator + 1)
+  var hasV4Part = validate4(lastPart)
+  var address = (hasV4Part ? withoutZone.substring(0, lastPartSeparator + 1) + '1234:5678' : withoutZone)
+
+  if (reBadCharacters.test(address)) return false
+  if (reBadAddress.test(address)) return false
+
+  var halves = address.split('::')
+
+  if (halves.length > 2) return false
+
+  if (halves.length === 2) {
+    var first = (halves[0] === '' ? [] : halves[0].split(':'))
+    var last = (halves[1] === '' ? [] : halves[1].split(':'))
+    var remainingLength = 8 - (first.length + last.length)
+
+    if (remainingLength <= 0) return false
+  } else {
+    if (address.split(':').length !== 8) return false
+  }
+
+  return true
+}
+
+function validate (input) {
+  return validate4(input) || validate6(input)
+}
+
+module.exports = function validator (options) {
+  if (!options) options = {}
+
+  if (options.version === 4) return validate4
+  if (options.version === 6) return validate6
+  if (options.version == null) return validate
+
+  throw new Error('Unknown version: ' + options.version)
+}
+
+module.exports['__all_regexes__'] = [
+  reIpv4FirstPass,
+  reSubnetString,
+  reForwardSlash,
+  reZone,
+  reBadCharacters,
+  reBadAddress
+]