1 files changed, 82 insertions, 0 deletions
diff --git a/www/app/lib/validate.js b/www/app/lib/validate.js
new file mode 100644
index 0000000..4e672e8
--- /dev/null
+++ b/www/app/lib/validate.js
@@ -0,0 +1,82 @@
+// https://github.com/dropbox/zxcvbn
+
+var DOMAIN_RE = /^((?:(?:(?:\w[\.\-\+]?)*)\w)+)((?:(?:(?:\w[\.\-\+]?){0,62})\w)+)\.(\w{2,6})$/
+var USER_RE   = /^[a-z0-9_-]{1,200}$/
+var USER_INT_RE = /^[\.@a-z0-9_-]*$/
+
+//
+// Validations returns an error message or false if no errors
+//
+
+class Validations {
+
+  domain(input) {
+    if (!input.match(DOMAIN_RE)) {
+      return "Not a domain name"
+    } else {
+      return null
+    }
+  }
+
+  usernameInteractive(input) {
+    if (!input.match(USER_INT_RE)) {
+      return "Username contains an invalid character"
+    }
+    return false
+  }
+
+  username(input) {
+    if (!input.match(USER_INT_RE)) {
+      return "Username contains an invalid character"
+    }
+    if (!input.match('@')) {
+      return "Username must be in the form username@domain"
+    }
+    let parts      = input.split('@')
+    let userpart   = parts[0]
+    let domainpart = parts[1]
+    if (!userpart.match(USER_RE)) {
+      return "Username contains an invalid character"
+    } else if (!domainpart.match(DOMAIN_RE)) {
+      return "Username must include a valid domain name."
+    }
+    return false
+  }
+
+  passwordStrength(passwd) {
+    if (typeof(zxcvbn) == 'function') {
+      // zxcvbn performs very slow on long strings, so we cap
+      // the calculation at 30 characters
+      return zxcvbn(passwd.substring(0,30))
+    } else {
+      return null
+    }
+  }
+
+  //
+  // loads the zxcvbn library. because this library is big, we don't load it
+  // every time, just when needed.
+  //
+  // this is the webpack way to do this:
+  //
+  //    require.ensure([], function () {
+  //      var zxcvbn = require('zxcvbn');
+  //    });
+  //
+  // that works, but requires that we also process the original coffeescript
+  // source if we want to avoid warning messages.
+  //
+  loadPasswdLib(onload) {
+    var id = "zxcvbn-script"
+    if (!document.getElementById(id)) {
+      var script = document.createElement('script')
+      script.id = id
+      script.onload = onload
+      script.src = './js/zxcvbn.js'
+      document.getElementsByTagName('script')[0].appendChild(script)
+    }
+  }
+}
+
+var Validate = new Validations()
+export default Validate