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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2006, 2008 Craig Edwards <craigedwards@brainbox.cc>
* Copyright (C) 2006-2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
/* $ModDesc: Provides support to block all-CAPS channel messages and notices */
/** Handles the +B channel mode
*/
class BlockCaps : public SimpleChannelModeHandler
{
public:
BlockCaps(Module* Creator) : SimpleChannelModeHandler(Creator, "blockcaps", 'B') { }
};
class ModuleBlockCAPS : public Module
{
BlockCaps bc;
int percent;
unsigned int minlen;
char capsmap[256];
public:
ModuleBlockCAPS() : bc(this)
{
OnRehash(NULL);
if (!ServerInstance->Modes->AddMode(&bc))
throw ModuleException("Could not add new modes!");
Implementation eventlist[] = { I_OnUserPreMessage, I_OnUserPreNotice, I_OnRehash, I_On005Numeric };
ServerInstance->Modules->Attach(eventlist, this, 4);
}
virtual void On005Numeric(std::string &output)
{
ServerInstance->AddExtBanChar('B');
}
virtual void OnRehash(User* user)
{
ReadConf();
}
virtual ModResult OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
{
if (target_type == TYPE_CHANNEL)
{
if ((!IS_LOCAL(user)) || (text.length() < minlen))
return MOD_RES_PASSTHRU;
Channel* c = (Channel*)dest;
ModResult res = ServerInstance->OnCheckExemption(user,c,"blockcaps");
if (res == MOD_RES_ALLOW)
return MOD_RES_PASSTHRU;
if (!c->GetExtBanStatus(user, 'B').check(!c->IsModeSet('B')))
{
int caps = 0;
const char* actstr = "\1ACTION ";
int act = 0;
for (std::string::iterator i = text.begin(); i != text.end(); i++)
{
/* Smart fix for suggestion from Jobe, ignore CTCP ACTION (part of /ME) */
if (*actstr && *i == *actstr++ && act != -1)
{
act++;
continue;
}
else
act = -1;
caps += capsmap[(unsigned char)*i];
}
if ( ((caps*100)/(int)text.length()) >= percent )
{
user->WriteNumeric(ERR_CANNOTSENDTOCHAN, "%s %s :Your message cannot contain more than %d%% capital letters if it's longer than %d characters", user->nick.c_str(), c->name.c_str(), percent, minlen);
return MOD_RES_DENY;
}
}
}
return MOD_RES_PASSTHRU;
}
virtual ModResult 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);
}
void ReadConf()
{
ConfigTag* tag = ServerInstance->Config->ConfValue("blockcaps");
percent = tag->getInt("percent", 100);
minlen = tag->getInt("minlen", 1);
std::string hmap = tag->getString("capsmap", "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
memset(capsmap, 0, sizeof(capsmap));
for (std::string::iterator n = hmap.begin(); n != hmap.end(); n++)
capsmap[(unsigned char)*n] = 1;
if (percent < 1 || percent > 100)
{
ServerInstance->Logs->Log("CONFIG",DEFAULT, "<blockcaps:percent> out of range, setting to default of 100.");
percent = 100;
}
if (minlen < 1 || minlen > MAXBUF-1)
{
ServerInstance->Logs->Log("CONFIG",DEFAULT, "<blockcaps:minlen> out of range, setting to default of 1.");
minlen = 1;
}
}
virtual ~ModuleBlockCAPS()
{
}
virtual Version GetVersion()
{
return Version("Provides support to block all-CAPS channel messages and notices", VF_VENDOR);
}
};
MODULE_INIT(ModuleBlockCAPS)
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