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home » brain » inspircd-cvs » inspircd » src » modules

m_nonicks.cpp

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/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
 * See: http://www.inspircd.org/wiki/index.php/Credits
 *
 * This program is free but copyrighted software; see
 *            the file COPYING for details.
 *
 * ---------------------------------------------------
 */

#include "inspircd.h"

/* $ModDesc: Provides support for channel mode +N & extban +b N: which prevents nick changes on channel */

class NoNicks : public ModeHandler
{
 public:
        NoNicks(InspIRCd* Instance) : ModeHandler(Instance, 'N', 0, 0, false, MODETYPE_CHANNEL, false) { }

        ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding, bool)
        {
                if (adding)
                {
                        if (!channel->IsModeSet('N'))
                        {
                                channel->SetMode('N',true);
                                return MODEACTION_ALLOW;
                        }
                }
                else
                {
                        if (channel->IsModeSet('N'))
                        {
                                channel->SetMode('N',false);
                                return MODEACTION_ALLOW;
                        }
                }

                return MODEACTION_DENY;
        }
};

class ModuleNoNickChange : public Module
{
        NoNicks* nn;
 public:
        ModuleNoNickChange(InspIRCd* Me) : Module(Me)
        {

                nn = new NoNicks(ServerInstance);
                ServerInstance->Modes->AddMode(nn);
                Implementation eventlist[] = { I_OnUserPreNick, I_On005Numeric };
                ServerInstance->Modules->Attach(eventlist, this, 2);
        }

        virtual ~ModuleNoNickChange()
        {
                ServerInstance->Modes->DelMode(nn);
                delete nn;
        }

        virtual Version GetVersion()
        {
                return Version("$Id: m_nonicks.cpp 10291 2008-08-25 20:35:51Z w00t $", VF_COMMON | VF_VENDOR, API_VERSION);
        }


        virtual void On005Numeric(std::string &output)
        {
                ServerInstance->AddExtBanChar('N');
        }

        virtual int OnUserPreNick(User* user, const std::string &newnick)
        {
                if (!IS_LOCAL(user))
                        return 0;

                if (isdigit(newnick[0])) /* don't even think about touching a switch to uid! */
                        return 0;

                for (UCListIter i = user->chans.begin(); i != user->chans.end(); i++)
                {
                        Channel* curr = i->first;

                        if (CHANOPS_EXEMPT(ServerInstance, 'N') && curr->GetStatus(user) == STATUS_OP)
                                continue;

                        if (curr->IsModeSet('N') || curr->IsExtBanned(user, 'N'))
                        {
                                user->WriteNumeric(ERR_CANTCHANGENICK, "%s :Can't change nickname while on %s (+N is set)", user->nick.c_str(), curr->name.c_str());
                                return 1;
                        }
                }

                return 0;
        }
};

MODULE_INIT(ModuleNoNickChange)