initial commit of C++ back end and react front end

interface/src/validators/isHostname.js

@@ -0,0 +1,6 @@
+const hostnameLengthRegex = /^.{0,32}$/
+const hostnamePatternRegex = /^(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9])\.)*([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9-]*[A-Za-z0-9])$/
+
+export default function isHostname(hostname) {
+  return hostnameLengthRegex.test(hostname) && hostnamePatternRegex.test(hostname);
+}

interface/src/validators/isIP.js

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+const ipAddressRegexp = /^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/
+
+export default function isIp(ipAddress) {
+  return ipAddressRegexp.test(ipAddress);
+}

interface/src/validators/optional.js

@@ -0,0 +1 @@
+export default validator => value => !value || validator(value);

interface/src/validators/or.js

@@ -0,0 +1 @@
+export default (validator1, validator2) => value => validator1(value) || validator2(value);