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home » brain » inspircd-cvs » 1_1_stable » src » modules

m_knock.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"
#include "users.h"
#include "channels.h"
#include "modules.h"

/* $ModDesc: Provides support for /KNOCK and mode +K */

class cmd_knock : public command_t
{
 public:
        cmd_knock (InspIRCd* Instance) : command_t(Instance,"KNOCK", 0, 2)
        {
                this->source = "m_knock.so";
                syntax = "<channel> <reason>";
        }
        
        CmdResult Handle (const char** parameters, int pcnt, userrec *user)
        {
                chanrec* c = ServerInstance->FindChan(parameters[0]);
                std::string line;

                if (!c)
                {
                        user->WriteServ("401 %s %s :No such channel",user->nick, parameters[0]);
                        return CMD_FAILURE;
                }

                if (c->HasUser(user))
                {
                        user->WriteServ("480 %s :Can't KNOCK on %s, you are already on that channel.", user->nick, c->name);
                        return CMD_FAILURE;
                }

                if (c->IsModeSet('K'))
                {
                        user->WriteServ("480 %s :Can't KNOCK on %s, +K is set.",user->nick, c->name);
                        return CMD_FAILURE;
                }

                if (!c->modes[CM_INVITEONLY])
                {
                        user->WriteServ("480 %s :Can't KNOCK on %s, channel is not invite only so knocking is pointless!",user->nick, c->name);
                        return CMD_FAILURE;
                }

                for (int i = 1; i < pcnt - 1; i++)
                {
                        line = line + std::string(parameters[i]) + " ";
                }
                line = line + std::string(parameters[pcnt-1]);

                c->WriteChannelWithServ((char*)ServerInstance->Config->ServerName,  "NOTICE %s :User %s is KNOCKing on %s (%s)", c->name, user->nick, c->name, line.c_str());
                user->WriteServ("NOTICE %s :KNOCKing on %s",user->nick,c->name);
                return CMD_SUCCESS;
        }
};

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

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

                return MODEACTION_DENY;
        }
};

class ModuleKnock : public Module
{
        cmd_knock* mycommand;
        Knock* kn;
 public:
        ModuleKnock(InspIRCd* Me) : Module(Me)
        {
                
                kn = new Knock(ServerInstance);
                if (!ServerInstance->AddMode(kn, 'K'))
                        throw ModuleException("Could not add new modes!");
                mycommand = new cmd_knock(ServerInstance);
                ServerInstance->AddCommand(mycommand);
        }

        void Implements(char* List)
        {
        }

        virtual ~ModuleKnock()
        {
                ServerInstance->Modes->DelMode(kn);
                DELETE(kn);
        }

        virtual Version GetVersion()
        {
                return Version(1, 1, 0, 1, VF_COMMON | VF_VENDOR, API_VERSION);
        }
};

MODULE_INIT(ModuleKnock)