X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_messageflood.cpp;h=012c95a8e8cfe89972c6c58df9e9beb0c419558b;hb=7f00015727fab50e37de46aa90d218b31c852c87;hp=10048ccf0986e83cd9d57fe77ae84cf8e3290fec;hpb=8934ec9c4bd2529db698a5a022e7833918c2ac03;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_messageflood.cpp b/src/modules/m_messageflood.cpp index 10048ccf0..012c95a8e 100644 --- a/src/modules/m_messageflood.cpp +++ b/src/modules/m_messageflood.cpp @@ -2,167 +2,288 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. - * E-mail: - * - * - * - * Written by Craig Edwards, Craig McLure, and others. + * 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. * * --------------------------------------------------- */ -using namespace std; - #include +#include #include "users.h" #include "channels.h" #include "modules.h" -#include "helperfuncs.h" +#include "inspircd.h" /* $ModDesc: Provides channel mode +f (message flood protection) */ -class floodsettings +/** Holds flood settings and state for mode +f + */ +class floodsettings : public classbase { + public: bool ban; int secs; int lines; + time_t reset; + std::map counters; floodsettings() : ban(0), secs(0), lines(0) {}; - floodsettings(bool a, int b, int c) : ban(a), secs(b), lines(c) {}; -} + floodsettings(bool a, int b, int c) : ban(a), secs(b), lines(c) + { + reset = time(NULL) + secs; + }; -class ModuleMsgFlood : public Module + void addmessage(userrec* who) + { + std::map::iterator iter = counters.find(who); + if (iter != counters.end()) + { + iter->second++; + } + else + { + counters[who] = 1; + } + if (time(NULL) > reset) + { + counters.clear(); + reset = time(NULL) + secs; + } + } + + bool shouldkick(userrec* who) + { + std::map::iterator iter = counters.find(who); + if (iter != counters.end()) + { + return (iter->second >= this->lines); + } + else return false; + } + + void clear(userrec* who) + { + std::map::iterator iter = counters.find(who); + if (iter != counters.end()) + { + counters.erase(iter); + } + } +}; + +/** Handles channel mode +f + */ +class MsgFlood : public ModeHandler { - Server *Srv; - public: - - ModuleMsgFlood(Server* Me) - : Module::Module(Me) + MsgFlood(InspIRCd* Instance) : ModeHandler(Instance, 'f', 1, 0, false, MODETYPE_CHANNEL, false) { } + + ModePair ModeSet(userrec* source, userrec* dest, chanrec* 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); + } + + bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel) { - Srv = Me; - Srv->AddExtendedMode('f',MT_CHANNEL,false,1,0); + /* When TS is equal, the alphabetically later one wins */ + return (their_param < our_param); } - - virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms) + + ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding) { - if ((modechar == 'f') && (type == MT_CHANNEL)) + floodsettings *f; + + if (adding) { - if (mode_on) + 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 { - std::string FloodParams = params[0]; - chanrec* c = (chanrec*)target; - char data[MAXBUF]; - strlcpy(data,FloodParams.c_str(),MAXBUF); - char* lines = data; - char* secs = NULL; - bool ban = false; - if (*data == '*') + ban = false; + } + while (*data) + { + if (*data == ':') { - ban = true; + *data = 0; data++; + secs = data; + break; } - else - { - ban = false; - } - while (*data) + 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)) { - if (*data == ':') - { - *data = 0; - data++; - secs = data; - break; - } - else data++; + source->WriteServ("608 %s %s :Invalid flood parameter",source->nick,channel->name); + parameter = ""; + return MODEACTION_DENY; } - if (secs) + else { - /* Set up the flood parameters for this channel */ - int nlines = atoi(lines); - int nsecs = atoi(secs); - if ((nlines<1) || (nsecs<1)) + if (!channel->GetExt("flood", f)) { - WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name); - return 0; + parameter = std::string(ban ? "*" : "") + ConvToStr(nlines) + ":" +ConvToStr(nsecs); + floodsettings *f = new floodsettings(ban,nsecs,nlines); + channel->Extend("flood",f); + channel->SetMode('f', true); + channel->SetModeParam('f', parameter.c_str(), true); + return MODEACTION_ALLOW; } else { - if (!c->GetExt("flood")) + if (((nlines != f->lines) || (nsecs != f->secs)) && ((nsecs > 0) && (nlines > 0)) || (ban != f->ban)) { - floodsettings *f = new floodsettings(ban,nlines,nsecs); - c->Extend("flood",(char*)f); + delete f; + floodsettings *f = new floodsettings(ban,nsecs,nlines); + parameter = std::string(ban ? "*" : "") + ConvToStr(nlines) + ":" +ConvToStr(nsecs); + channel->Shrink("flood"); + channel->Extend("flood",f); + channel->SetModeParam('f', parameter.c_str(), true); + return MODEACTION_ALLOW; } } - return 1; - } - else - { - WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name); - return 0; } - } else { - if (c->GetExt("flood")) + source->WriteServ("608 %s %s :Invalid flood parameter",source->nick,channel->name); + parameter = ""; + return MODEACTION_DENY; + } + } + else + { + if (channel->GetExt("flood", f)) + { + DELETE(f); + channel->Shrink("flood"); + channel->SetMode('f', false); + return MODEACTION_ALLOW; + } + } + + return MODEACTION_DENY; + } +}; + +class ModuleMsgFlood : public Module +{ + + MsgFlood* mf; + + public: + + ModuleMsgFlood(InspIRCd* Me) + : Module::Module(Me) + { + + mf = new MsgFlood(ServerInstance); + if (!ServerInstance->AddMode(mf, 'f')) + throw ModuleException("Could not add new modes!"); + } + + void ProcessMessages(userrec* user,chanrec* dest, const std::string &text) + { + if (IS_LOCAL(user)) + { + floodsettings *f; + if (dest->GetExt("flood", f)) + { + f->addmessage(user); + if (f->shouldkick(user)) { - floodsettings *f = (floodsettings*)c->GetExt("flood"); - delete f; - c->Shrink("flood"); + /* 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 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); + dest->ServerKickUser(user, kickmessage, true); } } - return 1; } - return 0; + } + + virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list) + { + if (target_type == TYPE_CHANNEL) + { + ProcessMessages(user,(chanrec*)dest,text); + } + } + + virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status, const CUList &exempt_list) + { + if (target_type == TYPE_CHANNEL) + { + ProcessMessages(user,(chanrec*)dest,text); + } } void OnChannelDelete(chanrec* chan) { - if (c->GetExt("flood")) + floodsettings* f; + if (chan->GetExt("flood", f)) { - floodsettings *f = (floodsettings*)c->GetExt("flood"); - delete f; - c->Shrink("flood"); + DELETE(f); + chan->Shrink("flood"); } } void Implements(char* List) { - List[I_On005Numeric] = List[I_OnExtendedMode] = List[I_OnChannelDelete] = 1; + List[I_OnChannelDelete] = List[I_OnUserNotice] = List[I_OnUserMessage] = 1; } - virtual void On005Numeric(std::string &output) - { - std::stringstream line(output); - std::string temp1, temp2; - while (!line.eof()) - { - line >> temp1; - if (temp1.substr(0,10) == "CHANMODES=") - { - // By doing this we're *assuming* no other module has fucked up the CHANMODES= - // section of the 005 numeric. If they have, we're going DOWN in a blaze of glory, - // with a honking great EXCEPTION :) - temp1.insert(temp1.find(",")+1,"f"); - } - temp2 = temp2 + temp1 + " "; - } - if (temp2.length()) - output = temp2.substr(0,temp2.length()-1); - } - virtual ~ModuleMsgFlood() { + ServerInstance->Modes->DelMode(mf); + DELETE(mf); } virtual Version GetVersion() { - return Version(1,0,0,0,VF_STATIC|VF_VENDOR); + return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION); } }; @@ -178,7 +299,7 @@ class ModuleMsgFloodFactory : public ModuleFactory { } - virtual Module * CreateModule(Server* Me) + virtual Module * CreateModule(InspIRCd* Me) { return new ModuleMsgFlood(Me); }