MXS-2574: Prevent alterations to current user

Due to the fact that the alteration is emulated by deletion and creation
of the user in question, the current user cannot be altered.

maxctrl/lib/alter.js

@@ -141,6 +141,10 @@ exports.builder = function(yargs) {
         }, function(argv) {
             maxctrl(argv, function(host) {
 
+                if (argv.u == argv.name) {
+                    return error('Cannot alter current user')
+                }
+
                 var user = {
                     'data': {
                         'id': argv.name,

maxctrl/test/alter.js

@@ -108,6 +108,11 @@ describe("Alter Commands", function() {
             .should.be.rejected
     })
 
+    it('rejects alteration to current user', function() {
+        return doCommand('-u bob -p bob alter user bob bob2')
+            .should.be.rejected
+    })
+
     it('creates user', function() {
         return verifyCommand('create user testuser test', 'users/inet/testuser')
     })