-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2008 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
+ * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 John Brooks <john.brooks@dereferenced.net>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2006 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * 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 channel mode +f (message flood protection) */
/** Holds flood settings and state for mode +f
*/
-class floodsettings : public classbase
+class floodsettings
{
public:
bool ban;
- int secs;
- int lines;
+ unsigned int secs;
+ unsigned int lines;
time_t reset;
- std::map<User*,int> counters;
+ std::map<User*, unsigned int> counters;
- floodsettings() : ban(0), secs(0), lines(0) {};
floodsettings(bool a, int b, int c) : ban(a), secs(b), lines(c)
{
- reset = time(NULL) + secs;
- };
+ reset = ServerInstance->Time() + secs;
+ }
- void addmessage(User* who)
+ bool addmessage(User* who)
{
- std::map<User*,int>::iterator iter = counters.find(who);
- if (iter != counters.end())
- {
- iter->second++;
- }
- else
- {
- counters[who] = 1;
- }
- if (time(NULL) > reset)
+ if (ServerInstance->Time() > reset)
{
counters.clear();
- reset = time(NULL) + secs;
+ reset = ServerInstance->Time() + secs;
}
- }
- bool shouldkick(User* who)
- {
- std::map<User*,int>::iterator iter = counters.find(who);
- if (iter != counters.end())
- {
- return (iter->second >= this->lines);
- }
- else return false;
+ return (++counters[who] >= this->lines);
}
void clear(User* who)
{
- std::map<User*,int>::iterator iter = counters.find(who);
+ std::map<User*, unsigned int>::iterator iter = counters.find(who);
if (iter != counters.end())
{
counters.erase(iter);
class MsgFlood : public ModeHandler
{
public:
- MsgFlood(InspIRCd* Instance) : ModeHandler(Instance, 'f', 1, 0, false, MODETYPE_CHANNEL, false) { }
-
- ModePair ModeSet(User* source, User* dest, Channel* channel, const std::string ¶meter)
- {
- floodsettings* x;
- if (channel->GetExt("flood",x))
- return std::make_pair(true, (x->ban ? "*" : "")+ConvToStr(x->lines)+":"+ConvToStr(x->secs));
- else
- return std::make_pair(false, parameter);
- }
+ SimpleExtItem<floodsettings> ext;
+ MsgFlood(Module* Creator) : ModeHandler(Creator, "flood", 'f', PARAM_SETONLY, MODETYPE_CHANNEL),
+ ext("messageflood", Creator) { }
- bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, Channel* channel)
+ ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding)
{
- /* When TS is equal, the alphabetically later one wins */
- return (their_param < our_param);
- }
-
- ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding, bool)
- {
- floodsettings *f;
-
if (adding)
{
- char ndata[MAXBUF];
- char* data = ndata;
- strlcpy(ndata,parameter.c_str(),MAXBUF);
- char* lines = data;
- char* secs = NULL;
- bool ban = false;
- if (*data == '*')
- {
- ban = true;
- lines++;
- }
- else
- {
- ban = false;
- }
- while (*data)
+ std::string::size_type colon = parameter.find(':');
+ if ((colon == std::string::npos) || (parameter.find('-') != std::string::npos))
{
- if (*data == ':')
- {
- *data = 0;
- data++;
- secs = data;
- break;
- }
- else data++;
- }
- if (secs)
- {
- /* Set up the flood parameters for this channel */
- int nlines = atoi(lines);
- int nsecs = atoi(secs);
- if ((nlines<1) || (nsecs<1))
- {
- source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick,channel->name);
- parameter.clear();
- return MODEACTION_DENY;
- }
- else
- {
- if (!channel->GetExt("flood", f))
- {
- parameter = std::string(ban ? "*" : "") + ConvToStr(nlines) + ":" +ConvToStr(nsecs);
- floodsettings *fs = new floodsettings(ban,nsecs,nlines);
- channel->Extend("flood",fs);
- channel->SetMode('f', true);
- channel->SetModeParam('f', parameter.c_str(), true);
- return MODEACTION_ALLOW;
- }
- else
- {
- std::string cur_param = channel->GetModeParameter('f');
- parameter = std::string(ban ? "*" : "") + ConvToStr(nlines) + ":" +ConvToStr(nsecs);
- if (cur_param == parameter)
- {
- // mode params match
- return MODEACTION_DENY;
- }
- else
- {
- if (((nlines != f->lines) || (nsecs != f->secs)) && ((nsecs > 0) && (nlines > 0)) || (ban != f->ban))
- {
- delete f;
- floodsettings *fs = new floodsettings(ban,nsecs,nlines);
- channel->Shrink("flood");
- channel->Extend("flood",fs);
- channel->SetModeParam('f', cur_param.c_str(), false);
- channel->SetModeParam('f', parameter.c_str(), true);
- return MODEACTION_ALLOW;
- }
- else
- {
- return MODEACTION_DENY;
- }
- }
- }
- }
+ source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str());
+ return MODEACTION_DENY;
}
- else
+
+ /* Set up the flood parameters for this channel */
+ bool ban = (parameter[0] == '*');
+ unsigned int nlines = ConvToInt(parameter.substr(ban ? 1 : 0, ban ? colon-1 : colon));
+ unsigned int nsecs = ConvToInt(parameter.substr(colon+1));
+
+ if ((nlines<2) || (nsecs<1))
{
- source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick,channel->name);
- parameter.clear();
+ source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str());
return MODEACTION_DENY;
}
+
+ floodsettings* f = ext.get(channel);
+ if ((f) && (nlines == f->lines) && (nsecs == f->secs) && (ban == f->ban))
+ // mode params match
+ return MODEACTION_DENY;
+
+ ext.set(channel, new floodsettings(ban, nsecs, nlines));
+ parameter = std::string(ban ? "*" : "") + ConvToStr(nlines) + ":" + ConvToStr(nsecs);
+ channel->SetModeParam('f', parameter);
+ return MODEACTION_ALLOW;
}
else
{
- if (channel->GetExt("flood", f))
- {
- delete f;
- channel->Shrink("flood");
- channel->SetMode('f', false);
- return MODEACTION_ALLOW;
- }
+ if (!channel->IsModeSet('f'))
+ return MODEACTION_DENY;
+
+ ext.unset(channel);
+ channel->SetModeParam('f', "");
+ return MODEACTION_ALLOW;
}
-
- return MODEACTION_DENY;
}
};
class ModuleMsgFlood : public Module
{
-
- MsgFlood* mf;
-
+ MsgFlood mf;
+
public:
-
- ModuleMsgFlood(InspIRCd* Me)
- : Module(Me)
+
+ ModuleMsgFlood()
+ : mf(this)
{
-
- mf = new MsgFlood(ServerInstance);
- if (!ServerInstance->Modes->AddMode(mf))
- throw ModuleException("Could not add new modes!");
- Implementation eventlist[] = { I_OnChannelDelete, I_OnUserPreNotice, I_OnUserPreMessage };
- ServerInstance->Modules->Attach(eventlist, this, 3);
}
-
- int ProcessMessages(User* user,Channel* dest, const std::string &text)
+
+ void init() CXX11_OVERRIDE
{
- if (!IS_LOCAL(user) || CHANOPS_EXEMPT(ServerInstance, 'f') && dest->GetStatus(user) == STATUS_OP)
- {
- return 0;
- }
+ ServerInstance->Modules->AddService(mf);
+ ServerInstance->Modules->AddService(mf.ext);
+ ServerInstance->Modules->Attach(I_OnUserPreMessage, this);
+ }
+
+ ModResult ProcessMessages(User* user,Channel* dest, const std::string &text)
+ {
+ if ((!IS_LOCAL(user)) || !dest->IsModeSet('f'))
+ return MOD_RES_PASSTHRU;
+
+ if (ServerInstance->OnCheckExemption(user,dest,"flood") == MOD_RES_ALLOW)
+ return MOD_RES_PASSTHRU;
- floodsettings *f;
- if (dest->GetExt("flood", f))
+ floodsettings *f = mf.ext.get(dest);
+ if (f)
{
- f->addmessage(user);
- if (f->shouldkick(user))
+ if (f->addmessage(user))
{
/* Youre outttta here! */
f->clear(user);
if (f->ban)
{
- const char* parameters[3];
- parameters[0] = dest->name;
- parameters[1] = "+b";
- parameters[2] = user->MakeWildHost();
- ServerInstance->SendMode(parameters,3,user);
- std::deque<std::string> n;
- /* Propogate the ban to other servers.
- * We dont know what protocol we may be using,
- * so this event is picked up by our protocol
- * module and formed into a ban command that
- * suits the protocol in use.
- */
- n.push_back(dest->name);
- n.push_back("+b");
- n.push_back(user->MakeWildHost());
- Event rmode((char *)&n, NULL, "send_mode");
- rmode.Send(ServerInstance);
- }
- char kickmessage[MAXBUF];
- snprintf(kickmessage, MAXBUF, "Channel flood triggered (limit is %d lines in %d secs)", f->lines, f->secs);
- if (!dest->ServerKickUser(user, kickmessage, true))
- {
- delete dest;
- return 1;
+ std::vector<std::string> parameters;
+ parameters.push_back(dest->name);
+ parameters.push_back("+b");
+ parameters.push_back("*!*@" + user->dhost);
+ ServerInstance->Modes->Process(parameters, ServerInstance->FakeClient);
}
+
+ const std::string kickMessage = "Channel flood triggered (limit is " + ConvToStr(f->lines) +
+ " in " + ConvToStr(f->secs) + " secs)";
+
+ dest->KickUser(ServerInstance->FakeClient, user, kickMessage);
+
+ return MOD_RES_DENY;
}
}
-
- 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;
+ return MOD_RES_PASSTHRU;
}
- virtual int OnUserPreNotice(User *user, void *dest, int target_type, std::string &text, char status, CUList &exempt_list)
+ ModResult OnUserPreMessage(User* user, void* dest, int target_type, std::string& text, char status, CUList& exempt_list, MessageType msgtype) CXX11_OVERRIDE
{
if (target_type == TYPE_CHANNEL)
return ProcessMessages(user,(Channel*)dest,text);
-
- return 0;
- }
- void OnChannelDelete(Channel* chan)
- {
- floodsettings* f;
- if (chan->GetExt("flood", f))
- {
- delete f;
- chan->Shrink("flood");
- }
+ return MOD_RES_PASSTHRU;
}
-
- virtual ~ModuleMsgFlood()
+ void Prioritize()
{
- ServerInstance->Modes->DelMode(mf);
- delete mf;
+ // we want to be after all modules that might deny the message (e.g. m_muteban, m_noctcp, m_blockcolor, etc.)
+ ServerInstance->Modules->SetPriority(this, I_OnUserPreMessage, PRIORITY_LAST);
}
-
- virtual Version GetVersion()
+
+ Version GetVersion() CXX11_OVERRIDE
{
- return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
+ return Version("Provides channel mode +f (message flood protection)", VF_VENDOR);
}
};
projects / user / henk / code / inspircd.git / blobdiff