GUAC-340: Add support for "username" parameter type.

guacamole/src/main/java/org/glyptodon/guacamole/net/basic/ProtocolParameter.java

@@ -43,7 +43,19 @@ public class ProtocolParameter {
         TEXT,
 
         /**
-         * A password parameter, whose value is sensitive and must be hidden.
+         * A username parameter. This parameter type generally behaves
+         * identically to arbitrary text parameters, but has semantic
+         * differences. If credential pass-through is in use, the value for this
+         * parameter may be automatically provided using the credentials
+         * originally used by the user to authenticate.
+         */
+        USERNAME,
+
+        /**
+         * A password parameter, whose value is sensitive and must be hidden. If
+         * credential pass-through is in use, the value for this parameter may
+         * be automatically provided using the credentials originally used by
+         * the user to authenticate.
          */
         PASSWORD,
 

guacamole/src/main/java/org/glyptodon/guacamole/net/basic/crud/protocols/List.java

@@ -149,6 +149,11 @@ public class List extends RestrictedHttpServlet {
                     xml.writeAttribute("type", "text");
                     break;
 
+                // Username parameter
+                case USERNAME:
+                    xml.writeAttribute("type", "username");
+                    break;
+
                 // Password parameter
                 case PASSWORD:
                     xml.writeAttribute("type", "password");

guacamole/src/main/java/org/glyptodon/guacamole/net/basic/xml/protocol/ParamTagHandler.java

@@ -57,6 +57,10 @@ public class ParamTagHandler implements TagHandler {
         else if ("numeric".equals(type))
             protocolParameter.setType(ProtocolParameter.Type.NUMERIC);
 
+        // Username field
+        else if ("username".equals(type))
+            protocolParameter.setType(ProtocolParameter.Type.USERNAME);
+
         // Password field
         else if ("password".equals(type))
             protocolParameter.setType(ProtocolParameter.Type.PASSWORD);