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

m_deaf.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 ircu style usermode +d (deaf to channel messages and channel notices) */

class User_d : public ModeHandler
{
 public:
        User_d(InspIRCd* Instance) : ModeHandler(Instance, 'd', 0, 0, false, MODETYPE_USER, false) { }

        ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding, bool)
        {
                if (adding)
                {
                        if (!dest->IsModeSet('d'))
                        {
                                dest->WriteServ("NOTICE %s :*** You have enabled usermode +d, deaf mode. This mode means you WILL NOT receive any messages from any channels you are in. If you did NOT mean to do this, use /mode %s -d.", dest->nick.c_str(), dest->nick.c_str());
                                dest->SetMode('d',true);
                                return MODEACTION_ALLOW;
                        }
                }
                else
                {
                        if (dest->IsModeSet('d'))
                        {
                                dest->SetMode('d',false);
                                return MODEACTION_ALLOW;
                        }
                }
                return MODEACTION_DENY;
        }
};

class ModuleDeaf : public Module
{
        User_d* m1;

        std::string deaf_bypasschars;
        std::string deaf_bypasschars_uline;

 public:
        ModuleDeaf(InspIRCd* Me)
                : Module(Me)
        {
                m1 = new User_d(ServerInstance);
                if (!ServerInstance->Modes->AddMode(m1))
                        throw ModuleException("Could not add new modes!");

                OnRehash(NULL, "");
                Implementation eventlist[] = { I_OnUserPreMessage, I_OnUserPreNotice, I_OnRehash, I_OnBuildExemptList };
                ServerInstance->Modules->Attach(eventlist, this, 4);
        }


        virtual void OnRehash(User* user, const std::string&)
        {
                ConfigReader* conf = new ConfigReader(ServerInstance);
                deaf_bypasschars = conf->ReadValue("deaf", "bypasschars", 0);
                deaf_bypasschars_uline = conf->ReadValue("deaf", "bypasscharsuline", 0);

                delete conf;
        }

        virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
        {
                if (target_type == TYPE_CHANNEL)
                {
                        Channel* chan = (Channel*)dest;
                        if (chan)
                                this->BuildDeafList(MSG_NOTICE, chan, user, status, text, exempt_list);
                }

                return 0;
        }

        virtual int OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
        {
                if (target_type == TYPE_CHANNEL)
                {
                        Channel* chan = (Channel*)dest;
                        if (chan)
                                this->BuildDeafList(MSG_PRIVMSG, chan, user, status, text, exempt_list);
                }

                return 0;
        }

        virtual void OnBuildExemptList(MessageType message_type, Channel* chan, User* sender, char status, CUList &exempt_list, const std::string &text)
        {
                BuildDeafList(message_type, chan, sender, status, text, exempt_list);
        }

        virtual void BuildDeafList(MessageType message_type, Channel* chan, User* sender, char status, const std::string &text, CUList &exempt_list)
        {
                CUList *ulist = chan->GetUsers();
                bool is_a_uline;
                bool is_bypasschar, is_bypasschar_avail;
                bool is_bypasschar_uline, is_bypasschar_uline_avail;

                is_bypasschar = is_bypasschar_avail = is_bypasschar_uline = is_bypasschar_uline_avail = 0;
                if (!deaf_bypasschars.empty())
                {
                        is_bypasschar_avail = 1;
                        if (deaf_bypasschars.find(text[0], 0) != std::string::npos)
                                is_bypasschar = 1;
                }
                if (!deaf_bypasschars_uline.empty())
                {
                        is_bypasschar_uline_avail = 1;
                        if (deaf_bypasschars_uline.find(text[0], 0) != std::string::npos)
                                is_bypasschar_uline = 1;
                }

                /*
                 * If we have no bypasschars_uline in config, and this is a bypasschar (regular)
                 * Than it is obviously going to get through +d, no build required
                 */
                if (!is_bypasschar_uline_avail && is_bypasschar)
                        return;

                for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
                {
                        /* not +d ? */
                        if (!i->first->IsModeSet('d'))
                                continue; /* deliver message */
                        /* matched both U-line only and regular bypasses */
                        if (is_bypasschar && is_bypasschar_uline)
                                continue; /* deliver message */

                        is_a_uline = ServerInstance->ULine(i->first->server);
                        /* matched a U-line only bypass */
                        if (is_bypasschar_uline && is_a_uline)
                                continue; /* deliver message */
                        /* matched a regular bypass */
                        if (is_bypasschar && !is_a_uline)
                                continue; /* deliver message */

                        if (status && !strchr(chan->GetAllPrefixChars(i->first), status))
                                continue;

                        /* don't deliver message! */
                        exempt_list[i->first] = i->first->nick;
                }
        }

        virtual ~ModuleDeaf()
        {
                ServerInstance->Modes->DelMode(m1);
                delete m1;
        }

        virtual Version GetVersion()
        {
                return Version("$Id: m_deaf.cpp 10622 2008-10-04 21:27:52Z brain $", VF_COMMON|VF_VENDOR,API_VERSION);
        }

};

MODULE_INIT(ModuleDeaf)