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m_nicklock.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 the NICKLOCK command, allows an oper to chage a users nick and lock them to it until they quit */

class CommandNicklock : public Command
{
        char* dummy;
 public:
        CommandNicklock (InspIRCd* Instance) : Command(Instance,"NICKLOCK", "o", 2)
        {
                this->source = "m_nicklock.so";
                syntax = "<oldnick> <newnick>";
                TRANSLATE3(TR_NICK, TR_TEXT, TR_END);
        }

        CmdResult Handle(const std::vector<std::string>& parameters, User *user)
        {
                User* target = ServerInstance->FindNick(parameters[0]);
                irc::string server;
                irc::string me;

                // check user exists
                if (!target)
                {
                        return CMD_FAILURE;
                }

                // check if user is locked
                if (target->GetExt("nick_locked", dummy))
                {
                        user->WriteNumeric(946, "%s %s :This user's nickname is already locked.",user->nick.c_str(),target->nick.c_str());
                        return CMD_FAILURE;
                }

                // check nick is valid
                if (IS_LOCAL(user) && !ServerInstance->IsNick(parameters[1].c_str(), ServerInstance->Config->Limits.NickMax))
                {
                        return CMD_FAILURE;
                }

                // let others know
                ServerInstance->SNO->WriteToSnoMask('A', std::string(user->nick)+" used NICKLOCK to change and hold "+parameters[0]+" to "+parameters[1]);

                if (!target->ForceNickChange(parameters[1].c_str()))
                {
                        // ugh, nickchange failed for some reason -- possibly existing nick?
                        if (!target->ForceNickChange(target->uuid.c_str()))
                        {
                                // Well shit, we cant even change them to their UID (this should not happen!)
                                ServerInstance->Users->QuitUser(target, "Nickname collision");
                        }
                }

                // give them a lock flag
                target->Extend("nick_locked", "ON");

                /* route */
                return CMD_SUCCESS;
        }
};

class CommandNickunlock : public Command
{
 public:
        CommandNickunlock (InspIRCd* Instance) : Command(Instance,"NICKUNLOCK", "o", 1)
        {
                this->source = "m_nicklock.so";
                syntax = "<locked-nick>";
        }

        CmdResult Handle (const std::vector<std::string>& parameters, User *user)
        {
                User* target = ServerInstance->FindNick(parameters[0]);
                if (target)
                {
                        target->Shrink("nick_locked");
                        user->WriteNumeric(945, "%s %s :Nickname now unlocked.",user->nick.c_str(),target->nick.c_str());
                        ServerInstance->SNO->WriteToSnoMask('A', std::string(user->nick)+" used NICKUNLOCK on "+parameters[0]);
                        return CMD_SUCCESS;
                }

                return CMD_FAILURE;
        }
};


class ModuleNickLock : public Module
{
        CommandNicklock*        cmd1;
        CommandNickunlock*      cmd2;
        char* n;
 public:
        ModuleNickLock(InspIRCd* Me)
                : Module(Me)
        {

                cmd1 = new CommandNicklock(ServerInstance);
                cmd2 = new CommandNickunlock(ServerInstance);
                ServerInstance->AddCommand(cmd1);
                ServerInstance->AddCommand(cmd2);
                Implementation eventlist[] = { I_OnUserPreNick, I_OnUserQuit, I_OnCleanup };
                ServerInstance->Modules->Attach(eventlist, this, 3);
        }

        virtual ~ModuleNickLock()
        {
        }

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


        virtual int OnUserPreNick(User* user, const std::string &newnick)
        {
                if (isdigit(newnick[0])) /* allow a switch to a UID */
                        return 0;

                if (user->GetExt("nick_locked", n))
                {
                        user->WriteNumeric(447, "%s :You cannot change your nickname (your nick is locked)",user->nick.c_str());
                        return 1;
                }
                return 0;
        }

        virtual void OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
        {
                user->Shrink("nick_locked");
        }

        virtual void OnCleanup(int target_type, void* item)
        {
                if(target_type == TYPE_USER)
                {
                        User* user = (User*)item;
                        user->Shrink("nick_locked");
                }
        }
};

MODULE_INIT(ModuleNickLock)