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m_chghost.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 the CHGHOST command */

class CommandChghost : public Command
{
 private:
        char* hostmap;
 public:
        CommandChghost (InspIRCd* Instance, char* hmap) : Command(Instance,"CHGHOST","o",2), hostmap(hmap)
        {
                this->source = "m_chghost.so";
                syntax = "<nick> <newhost>";
                TRANSLATE3(TR_NICK, TR_TEXT, TR_END);
        }

        CmdResult Handle(const std::vector<std::string> &parameters, User *user)
        {
                const char * x = parameters[1].c_str();

                for (; *x; x++)
                {
                        if (!hostmap[(unsigned char)*x])
                        {
                                user->WriteServ("NOTICE "+std::string(user->nick)+" :*** CHGHOST: Invalid characters in hostname");
                                return CMD_FAILURE;
                        }
                }
                if (parameters[0].empty())
                {
                        user->WriteServ("NOTICE %s :*** CHGHOST: Host must be specified", user->nick.c_str());
                        return CMD_FAILURE;
                }

                if ((parameters[1].c_str() - x) > 63)
                {
                        user->WriteServ("NOTICE %s :*** CHGHOST: Host too long", user->nick.c_str());
                        return CMD_FAILURE;
                }
                User* dest = ServerInstance->FindNick(parameters[0]);

                if (!dest)
                {
                        user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel", user->nick.c_str(), parameters[0].c_str());
                        return CMD_FAILURE;
                }

                if (IS_LOCAL(dest))
                {
                        if ((dest->ChangeDisplayedHost(parameters[1].c_str())) && (!ServerInstance->ULine(user->server)))
                        {
                                // fix by brain - ulines set hosts silently
                                ServerInstance->SNO->WriteToSnoMask('A', std::string(user->nick)+" used CHGHOST to make the displayed host of "+dest->nick+" become "+dest->dhost);
                        }

                        /* ChangeDisplayedHost fixes it for us */
                        return CMD_LOCALONLY;
                }

                /* route it! */
                return CMD_SUCCESS;

        }
};


class ModuleChgHost : public Module
{
        CommandChghost* mycommand;
        char hostmap[256];
 public:
        ModuleChgHost(InspIRCd* Me)
                : Module(Me)
        {
                OnRehash(NULL,"");
                mycommand = new CommandChghost(ServerInstance, hostmap);
                ServerInstance->AddCommand(mycommand);
                Implementation eventlist[] = { I_OnRehash };
                ServerInstance->Modules->Attach(eventlist, this, 1);
        }


        void OnRehash(User* user, const std::string &parameter)
        {
                ConfigReader Conf(ServerInstance);
                std::string hmap = Conf.ReadValue("hostname", "charmap", 0);

                if (hmap.empty())
                        hmap = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.-_/0123456789";

                memset(hostmap, 0, sizeof(hostmap));
                for (std::string::iterator n = hmap.begin(); n != hmap.end(); n++)
                        hostmap[(unsigned char)*n] = 1;
        }

        ~ModuleChgHost()
        {
        }

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

};

MODULE_INIT(ModuleChgHost)