X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_blockcaps.cpp;h=0acdc4d6c0dc7ea8a4f86846d37b9cf688454481;hb=3151d60c1ecc9462e4c335282ee6c31672f45111;hp=8713f8c0d86db8c89c0a43307f84c278762f78a0;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_blockcaps.cpp b/src/modules/m_blockcaps.cpp index 8713f8c0d..0acdc4d6c 100644 --- a/src/modules/m_blockcaps.cpp +++ b/src/modules/m_blockcaps.cpp @@ -1 +1,132 @@ -/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 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" #include "users.h" #include "channels.h" #include "modules.h" #include "mode.h" /* $ModDesc: Provides support for channel mode +P to block all-CAPS channel messages and notices */ /** Handles the +P channel mode */ class BlockCaps : public ModeHandler { public: BlockCaps(InspIRCd* Instance) : ModeHandler(Instance, 'P', 0, 0, false, MODETYPE_CHANNEL, false) { } ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding) { if (adding) { if (!channel->IsModeSet('P')) { channel->SetMode('P',true); return MODEACTION_ALLOW; } } else { if (channel->IsModeSet('P')) { channel->SetMode('P',false); return MODEACTION_ALLOW; } } return MODEACTION_DENY; } }; class ModuleBlockCAPS : public Module { BlockCaps* bc; int percent; unsigned int minlen; char capsmap[256]; public: ModuleBlockCAPS(InspIRCd* Me) : Module(Me) { OnRehash(NULL,""); bc = new BlockCaps(ServerInstance); if (!ServerInstance->AddMode(bc, 'P')) throw ModuleException("Could not add new modes!"); } void Implements(char* List) { List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnRehash] = 1; } virtual void OnRehash(userrec* user, const std::string ¶m) { ReadConf(); } virtual int OnUserPreMessage(userrec* 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 0; chanrec* c = (chanrec*)dest; if (c->IsModeSet('P')) { int caps = 0; for (std::string::iterator i = text.begin(); i != text.end(); i++) caps += capsmap[(unsigned char)*i]; if ( ((caps*100)/(int)text.length()) >= percent ) { user->WriteServ( "404 %s %s :Your line cannot be more than %d%% capital letters if it is %d or more letters long", user->nick, c->name, percent, minlen); return 1; } } } return 0; } virtual int OnUserPreNotice(userrec* 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() { ConfigReader Conf(ServerInstance); percent = Conf.ReadInteger("blockcaps", "percent", "100", 0, true); minlen = Conf.ReadInteger("blockcaps", "minlen", "0", 0, true); std::string hmap = Conf.ReadValue("blockcaps", "capsmap", 0); if (hmap.empty()) hmap = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; memset(&capsmap, 0, 255); for (std::string::iterator n = hmap.begin(); n != hmap.end(); n++) capsmap[(unsigned char)*n] = 1; if (percent < 0 || percent > 100) { ServerInstance->Log(DEFAULT, " out of range, setting to default of 100."); percent = 100; } if (minlen < 0 || minlen > MAXBUF-1) { ServerInstance->Log(DEFAULT, " out of range, setting to default of 0."); minlen = 0; } } virtual ~ModuleBlockCAPS() { ServerInstance->Modes->DelMode(bc); DELETE(bc); } virtual Version GetVersion() { return Version(1,1,0,0,VF_COMMON|VF_VENDOR,API_VERSION); } }; MODULE_INIT(ModuleBlockCAPS) \ No newline at end of file +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2013, 2017-2018, 2020 Sadie Powell + * Copyright (C) 2012-2014 Attila Molnar + * Copyright (C) 2012 Robby + * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2008 Thomas Stagner + * Copyright (C) 2008 Robin Burchell + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2006, 2008-2009 Craig Edwards + * + * 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 . + */ + + +#include "inspircd.h" +#include "modules/exemption.h" + +class ModuleBlockCAPS : public Module +{ + CheckExemption::EventProvider exemptionprov; + SimpleChannelModeHandler bc; + unsigned int percent; + unsigned int minlen; + std::bitset lowercase; + std::bitset uppercase; + +public: + ModuleBlockCAPS() + : exemptionprov(this) + , bc(this, "blockcaps", 'B') + { + } + + void On005Numeric(std::map& tokens) CXX11_OVERRIDE + { + tokens["EXTBAN"].push_back('B'); + } + + ModResult OnUserPreMessage(User* user, const MessageTarget& target, MessageDetails& details) CXX11_OVERRIDE + { + if (target.type == MessageTarget::TYPE_CHANNEL) + { + if (!IS_LOCAL(user)) + return MOD_RES_PASSTHRU; + + Channel* c = target.Get(); + ModResult res = CheckExemption::Call(exemptionprov, user, c, "blockcaps"); + + if (res == MOD_RES_ALLOW) + return MOD_RES_PASSTHRU; + + if (!c->GetExtBanStatus(user, 'B').check(!c->IsModeSet(bc))) + { + // If the message is a CTCP then we skip it unless it is + // an ACTION in which case we just check against the body. + std::string ctcpname; + std::string message(details.text); + if (details.IsCTCP(ctcpname, message)) + { + // If the CTCP is not an action then skip it. + if (!irc::equals(ctcpname, "ACTION")) + return MOD_RES_PASSTHRU; + } + + // If the message is shorter than the minimum length + // then we don't need to do anything else. + size_t length = message.length(); + if (length < minlen) + return MOD_RES_PASSTHRU; + + // Count the characters to see how many upper case and + // ignored (non upper or lower) characters there are. + size_t upper = 0; + for (std::string::const_iterator iter = message.begin(); iter != message.end(); ++iter) + { + unsigned char chr = static_cast(*iter); + if (uppercase.test(chr)) + upper += 1; + else if (!lowercase.test(chr)) + length -= 1; + } + + // Calculate the percentage which is upper case. If the + // message was entirely symbols then it can't contain + // any upper case letters. + if (length > 0 && round((upper * 100) / length) >= percent) + { + const std::string msg = InspIRCd::Format("Your message cannot contain %d%% or more capital letters if it's longer than %d characters", percent, minlen); + user->WriteNumeric(Numerics::CannotSendTo(c, msg)); + return MOD_RES_DENY; + } + } + } + return MOD_RES_PASSTHRU; + } + + void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE + { + ConfigTag* tag = ServerInstance->Config->ConfValue("blockcaps"); + percent = tag->getUInt("percent", 100, 1, 100); + minlen = tag->getUInt("minlen", 1, 1, ServerInstance->Config->Limits.MaxLine); + + lowercase.reset(); + const std::string lower = tag->getString("lowercase", "abcdefghijklmnopqrstuvwxyz"); + for (std::string::const_iterator iter = lower.begin(); iter != lower.end(); ++iter) + lowercase.set(static_cast(*iter)); + + uppercase.reset(); + const std::string upper = tag->getString("uppercase", tag->getString("capsmap", "ABCDEFGHIJKLMNOPQRSTUVWXYZ", 1)); + for (std::string::const_iterator iter = upper.begin(); iter != upper.end(); ++iter) + uppercase.set(static_cast(*iter)); + } + + Version GetVersion() CXX11_OVERRIDE + { + return Version("Adds channel mode B (blockcaps) which allows channels to block messages which are excessively capitalised.", VF_VENDOR); + } +}; + +MODULE_INIT(ModuleBlockCAPS)