1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
24 #include "helperfuncs.h"
26 /* $ModDesc: Provides channel mode +f (message flood protection) */
28 class floodsettings : public classbase
35 std::map<userrec*,int> counters;
37 floodsettings() : ban(0), secs(0), lines(0) {};
38 floodsettings(bool a, int b, int c) : ban(a), secs(b), lines(c)
40 reset = time(NULL) + secs;
41 log(DEBUG,"Create new floodsettings: %lu %lu",time(NULL),reset);
44 void addmessage(userrec* who)
46 std::map<userrec*,int>::iterator iter = counters.find(who);
47 if (iter != counters.end())
50 log(DEBUG,"Count for %s is now %d",who->nick,iter->second);
55 log(DEBUG,"Count for %s is now *1*",who->nick);
57 if (time(NULL) > reset)
59 log(DEBUG,"floodsettings timer Resetting.");
61 reset = time(NULL) + secs;
65 bool shouldkick(userrec* who)
67 std::map<userrec*,int>::iterator iter = counters.find(who);
68 if (iter != counters.end())
70 log(DEBUG,"should kick? %d, %d",iter->second,this->lines);
71 return (iter->second >= this->lines);
76 void clear(userrec* who)
78 std::map<userrec*,int>::iterator iter = counters.find(who);
79 if (iter != counters.end())
86 class MsgFlood : public ModeHandler
89 MsgFlood() : ModeHandler('f', 1, 0, false, MODETYPE_CHANNEL, false) { }
91 ModePair ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter)
94 if (channel->GetExt("flood",x))
95 return std::make_pair(true, (x->ban ? "*" : "")+ConvToStr(x->lines)+":"+ConvToStr(x->secs));
97 return std::make_pair(false, parameter);
100 bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
102 /* When TS is equal, the alphabetically later one wins */
103 return (their_param < our_param);
106 ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding)
114 strlcpy(ndata,parameter.c_str(),MAXBUF);
140 /* Set up the flood parameters for this channel */
141 int nlines = atoi(lines);
142 int nsecs = atoi(secs);
143 if ((nlines<1) || (nsecs<1))
145 WriteServ(source->fd,"608 %s %s :Invalid flood parameter",source->nick,channel->name);
147 return MODEACTION_DENY;
151 if (!channel->GetExt("flood", f))
153 parameter = ConvToStr(nlines) + ":" +ConvToStr(nsecs);
154 floodsettings *f = new floodsettings(ban,nsecs,nlines);
155 channel->Extend("flood",f);
156 channel->SetMode('f', true);
157 channel->SetModeParam('f', parameter.c_str(), true);
158 return MODEACTION_ALLOW;
164 WriteServ(source->fd,"608 %s %s :Invalid flood parameter",source->nick,channel->name);
166 return MODEACTION_DENY;
171 if (channel->GetExt("flood", f))
174 channel->Shrink("flood");
175 channel->SetMode('f', false);
176 return MODEACTION_ALLOW;
180 return MODEACTION_DENY;
184 class ModuleMsgFlood : public Module
191 ModuleMsgFlood(Server* Me)
196 Srv->AddMode(mf, 'f');
199 void ProcessMessages(userrec* user,chanrec* dest, const std::string &text)
204 if (dest->GetExt("flood", f))
207 if (f->shouldkick(user))
209 /* Youre outttta here! */
213 const char* parameters[3];
214 parameters[0] = dest->name;
215 parameters[1] = "+b";
216 parameters[2] = user->MakeWildHost();
217 Srv->SendMode(parameters,3,user);
218 std::deque<std::string> n;
219 /* Propogate the ban to other servers.
220 * We dont know what protocol we may be using,
221 * so this event is picked up by our protocol
222 * module and formed into a ban command that
223 * suits the protocol in use.
225 n.push_back(dest->name);
227 n.push_back(user->MakeWildHost());
228 Event rmode((char *)&n, NULL, "send_mode");
231 Srv->KickUser(NULL, user, dest, "Channel flood triggered (mode +f)");
237 virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status)
239 if (target_type == TYPE_CHANNEL)
241 ProcessMessages(user,(chanrec*)dest,text);
245 virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status)
247 if (target_type == TYPE_CHANNEL)
249 ProcessMessages(user,(chanrec*)dest,text);
253 void OnChannelDelete(chanrec* chan)
256 if (chan->GetExt("flood", f))
259 chan->Shrink("flood");
263 void Implements(char* List)
265 List[I_On005Numeric] = List[I_OnChannelDelete] = List[I_OnUserNotice] = List[I_OnUserMessage] = 1;
268 virtual void On005Numeric(std::string &output)
270 InsertMode(output, "f", 3);
273 virtual ~ModuleMsgFlood()
278 virtual Version GetVersion()
280 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
285 class ModuleMsgFloodFactory : public ModuleFactory
288 ModuleMsgFloodFactory()
292 ~ModuleMsgFloodFactory()
296 virtual Module * CreateModule(Server* Me)
298 return new ModuleMsgFlood(Me);
304 extern "C" void * init_module( void )
306 return new ModuleMsgFloodFactory;