Fail a SANICK if the target nickname already exists.

[user/henk/code/inspircd.git] / src / modules / m_sanick.cpp

diff --git a/src/modules/m_sanick.cpp b/src/modules/m_sanick.cpp
index 65de142505beeffeb0b7f8ed4f900b36fd8eb8af..31813bedf93e41579ab2d01fdc676da15008eebf 100644 (file)
--- a/src/modules/m_sanick.cpp
+++ b/src/modules/m_sanick.cpp
@@ -1,89 +1,107 @@
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
- *                       E-mail:
- *                <brain@chatspike.net>
- *               <Craig@chatspike.net>
- *     
- * Written by Craig Edwards, Craig McLure, and others.
- * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ *   Copyright (C) 2013, 2018, 2020 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2012-2014, 2016 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2010 Craig Edwards <brain@inspircd.org>
+ *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007, 2009 Dennis Friis <peavey@inspircd.org>
  *
- * ---------------------------------------------------
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdio.h>
-#include <string>
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
 
-/* $ModDesc: Provides support for SANICK command */
+#include "inspircd.h"
 
-Server *Srv;
-        
-void handle_sanick(char **parameters, int pcnt, userrec *user)
+/** Handle /SANICK
+ */
+class CommandSanick : public Command
 {
-       userrec* source = Srv->FindNick(std::string(parameters[0]));
-       if (source)
+ public:
+       CommandSanick(Module* Creator) : Command(Creator,"SANICK", 2)
        {
-               if (Srv->IsNick(std::string(parameters[1])))
+               allow_empty_last_param = false;
+               flags_needed = 'o';
+               syntax = "<nick> <newnick>";
+               TRANSLATE2(TR_NICK, TR_TEXT);
+       }
+
+       CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE
+       {
+               User* target = ServerInstance->FindNick(parameters[0]);
+
+               /* Do local sanity checks and bails */
+               if (IS_LOCAL(user))
                {
-                       // FIX by brain: Cant use source->nick here because if it traverses a server link then
-                       // source->nick becomes invalid as the object data moves in memory.
-                       Srv->SendOpers(std::string(user->nick)+" used SANICK to change "+std::string(parameters[0])+" to "+parameters[1]);
-                       Srv->ChangeUserNick(source,std::string(parameters[1]));
+                       if (target && target->server->IsULine())
+                       {
+                               user->WriteNumeric(ERR_NOPRIVILEGES, "Cannot use an SA command on a U-lined client");
+                               return CMD_FAILURE;
+                       }
+
+                       if ((!target) || (target->registered != REG_ALL))
+                       {
+                               user->WriteNotice("*** No such nickname: '" + parameters[0] + "'");
+                               return CMD_FAILURE;
+                       }
+
+                       if (!ServerInstance->IsNick(parameters[1]))
+                       {
+                               user->WriteNotice("*** Invalid nickname: '" + parameters[1] + "'");
+                               return CMD_FAILURE;
+                       }
                }
-       }
-}
 
+               /* Have we hit target's server yet? */
+               if (target && IS_LOCAL(target))
+               {
+                       const std::string oldnick = target->nick;
+                       const std::string newnick = parameters[1];
+                       if (!ServerInstance->FindNickOnly(newnick) && target->ChangeNick(newnick))
+                       {
+                               ServerInstance->SNO->WriteGlobalSno('a', user->nick + " used SANICK to change " + oldnick + " to " + newnick);
+                       }
+                       else
+                       {
+                               ServerInstance->SNO->WriteGlobalSno('a', user->nick + " failed SANICK (from " + oldnick + " to " + newnick + ")");
+                       }
+               }
 
-class ModuleSanick : public Module
-{
- public:
-       ModuleSanick()
-       {
-               Srv = new Server;
-               Srv->AddCommand("SANICK",handle_sanick,'o',2,"m_sanick.so");
+               return CMD_SUCCESS;
        }
-       
-       virtual ~ModuleSanick()
-       {
-               delete Srv;
-       }
-       
-       virtual Version GetVersion()
+
+       RouteDescriptor GetRouting(User* user, const Params& parameters) CXX11_OVERRIDE
        {
-               return Version(1,0,0,1);
+               return ROUTE_OPT_UCAST(parameters[0]);
        }
-       
 };
 
-// stuff down here is the module-factory stuff. For basic modules you can ignore this.
 
-class ModuleSanickFactory : public ModuleFactory
+class ModuleSanick : public Module
 {
+       CommandSanick cmd;
  public:
-       ModuleSanickFactory()
-       {
-       }
-       
-       ~ModuleSanickFactory()
+       ModuleSanick()
+               : cmd(this)
        {
        }
-       
-       virtual Module * CreateModule()
+
+       Version GetVersion() CXX11_OVERRIDE
        {
-               return new ModuleSanick;
+               return Version("Adds the /SANICK command which allows server operators to change the nickname of a user.", VF_OPTCOMMON | VF_VENDOR);
        }
-       
 };
 
-
-extern "C" void * init_module( void )
-{
-       return new ModuleSanickFactory;
-}
-
+MODULE_INIT(ModuleSanick)