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m_chanfilter.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.
 *
 * ---------------------------------------------------
 */

#define _CRT_SECURE_NO_DEPRECATE
#define _SCL_SECURE_NO_DEPRECATE

#include "inspircd.h"
#include "u_listmode.h"

/* $ModDesc: Provides channel-specific censor lists (like mode +G but varies from channel to channel) */
/* $ModDep: ../../include/u_listmode.h */

class ChanFilter : public ListModeBase
{
 public:
        ChanFilter(InspIRCd* Instance) : ListModeBase(Instance, 'g', "End of channel spamfilter list", 941, 940, false, "chanfilter") { }

        virtual bool ValidateParam(User* user, Channel* chan, std::string &word)
        {
                if ((word.length() > 35) || (word.empty()))
                {
                        user->WriteNumeric(935, "%s %s %s :word is too %s for censor list",user->nick.c_str(), chan->name.c_str(), word.c_str(), (word.empty() ? "short" : "long"));
                        return false;
                }

                return true;
        }

        virtual bool TellListTooLong(User* user, Channel* chan, std::string &word)
        {
                user->WriteNumeric(939, "%s %s %s :Channel spamfilter list is full", user->nick.c_str(), chan->name.c_str(), word.c_str());
                return true;
        }

        virtual void TellAlreadyOnList(User* user, Channel* chan, std::string &word)
        {
                user->WriteNumeric(937, "%s %s :The word %s is already on the spamfilter list",user->nick.c_str(), chan->name.c_str(), word.c_str());
        }

        virtual void TellNotSet(User* user, Channel* chan, std::string &word)
        {
                user->WriteNumeric(938, "%s %s :No such spamfilter word is set",user->nick.c_str(), chan->name.c_str());
        }
};

class ModuleChanFilter : public Module
{

        ChanFilter* cf;

 public:

        ModuleChanFilter(InspIRCd* Me)
                : Module(Me)
        {
                cf = new ChanFilter(ServerInstance);
                if (!ServerInstance->Modes->AddMode(cf))
                        throw ModuleException("Could not add new modes!");

                cf->DoImplements(this);
                Implementation eventlist[] = { I_OnCleanup, I_OnChannelDelete, I_OnRehash, I_OnUserPreMessage, I_OnUserPreNotice, I_OnSyncChannel };
                ServerInstance->Modules->Attach(eventlist, this, 6);

                ServerInstance->Modules->PublishInterface("ChannelBanList", this);
        }

        virtual void OnChannelDelete(Channel* chan)
        {
                cf->DoChannelDelete(chan);
        }

        virtual void OnRehash(User* user, const std::string &parameter)
        {
                cf->DoRehash();
        }

        virtual int ProcessMessages(User* user,Channel* chan,std::string &text)
        {
                if (!IS_LOCAL(user) || (CHANOPS_EXEMPT(ServerInstance, 'g') && chan->GetStatus(user) == STATUS_OP))
                        return 0;

                modelist* list;
                chan->GetExt(cf->GetInfoKey(), list);

                if (list)
                {
                        for (modelist::iterator i = list->begin(); i != list->end(); i++)
                        {
                                if (InspIRCd::Match(text, i->mask))
                                {
                                        user->WriteNumeric(936, "%s %s %s :Your message contained a censored word, and was blocked",user->nick.c_str(), chan->name.c_str(), i->mask.c_str());
                                        return 1;
                                }
                        }
                }

                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)
                {
                        return ProcessMessages(user,(Channel*)dest,text);
                }
                return 0;
        }

        virtual void OnCleanup(int target_type, void* item)
        {
                cf->DoCleanup(target_type, item);
        }

        virtual const char* OnRequest(Request* request)
        {
                return cf->DoOnRequest(request);
        }

        virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
        {
                return OnUserPreMessage(user,dest,target_type,text,status,exempt_list);
        }

        virtual void OnSyncChannel(Channel* chan, Module* proto, void* opaque)
        {
                cf->DoSyncChannel(chan, proto, opaque);
        }

        virtual Version GetVersion()
        {
                return Version("$Id: m_chanfilter.cpp 10408 2008-09-06 13:05:28Z brain $", VF_COMMON | VF_VENDOR, API_VERSION);
        }

        virtual ~ModuleChanFilter()
        {
                ServerInstance->Modes->DelMode(cf);
                delete cf;
                ServerInstance->Modules->UnpublishInterface("ChannelBanList", this);
        }
};

MODULE_INIT(ModuleChanFilter)