X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmodules%2Fm_messageflood.cpp;h=5a40664d9b0f81c313e5408ff86bda5735ab8472;hb=6d03943426dcce76ba66567a9b18425a5ebb4c0c;hp=6079eb47b733c27b9ebdf421836ae57ddbf77163;hpb=6ab1d0dffb8084bf6a2ad8a446a3836fa3760c8a;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_messageflood.cpp b/src/modules/m_messageflood.cpp index 6079eb47b..5a40664d9 100644 --- a/src/modules/m_messageflood.cpp +++ b/src/modules/m_messageflood.cpp @@ -2,80 +2,68 @@ * | 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) 2002-2009 InspIRCd Development Team + * See: http://wiki.inspircd.org/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) */ +/** Holds flood settings and state for mode +f + */ class floodsettings : public classbase { + private: + InspIRCd *ServerInstance; public: bool ban; int secs; int lines; time_t reset; - std::map counters; + std::map 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; - log(DEBUG,"Create new floodsettings: %lu %lu",time(NULL),reset); + reset = ServerInstance->Time() + secs; }; - void addmessage(userrec* who) + void addmessage(User* who) { - std::map::iterator iter = counters.find(who); + std::map::iterator iter = counters.find(who); if (iter != counters.end()) { iter->second++; - log(DEBUG,"Count for %s is now %d",who->nick,iter->second); } else { counters[who] = 1; - log(DEBUG,"Count for %s is now *1*",who->nick); } - if (time(NULL) > reset) + if (ServerInstance->Time() > reset) { - log(DEBUG,"floodsettings timer Resetting."); counters.clear(); - reset = time(NULL) + secs; + reset = ServerInstance->Time() + secs; } } - bool shouldkick(userrec* who) + bool shouldkick(User* who) { - std::map::iterator iter = counters.find(who); + std::map::iterator iter = counters.find(who); if (iter != counters.end()) { - log(DEBUG,"should kick? %d, %d",iter->second,this->lines); return (iter->second >= this->lines); } else return false; } - void clear(userrec* who) + void clear(User* who) { - std::map::iterator iter = counters.find(who); + std::map::iterator iter = counters.find(who); if (iter != counters.end()) { counters.erase(iter); @@ -83,29 +71,27 @@ class floodsettings : public classbase } }; +/** Handles channel mode +f + */ class MsgFlood : public ModeHandler { public: - MsgFlood() : ModeHandler('f', 1, 0, false, MODETYPE_CHANNEL, false) { } + SimpleExtItem ext; + MsgFlood(Module* Creator) : ModeHandler(Creator, 'f', PARAM_SETONLY, MODETYPE_CHANNEL), + ext("messageflood", Creator) { } - 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) + ModePair ModeSet(User* source, User* dest, Channel* channel, const std::string ¶meter) { - /* When TS is equal, the alphabetically later one wins */ - return (their_param < our_param); + floodsettings* x = ext.get(channel); + if (x) + return std::make_pair(true, (x->ban ? "*" : "")+ConvToStr(x->lines)+":"+ConvToStr(x->secs)); + else + return std::make_pair(false, parameter); } - ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding) + ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding) { - floodsettings *f; + floodsettings *f = ext.get(channel); if (adding) { @@ -140,169 +126,151 @@ class MsgFlood : public ModeHandler /* Set up the flood parameters for this channel */ int nlines = atoi(lines); int nsecs = atoi(secs); - if ((nlines<1) || (nsecs<1)) + if ((nlines<2) || (nsecs<1)) { - WriteServ(source->fd,"608 %s %s :Invalid flood parameter",source->nick,channel->name); - parameter = ""; + source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str()); + parameter.clear(); return MODEACTION_DENY; } else { - if (!channel->GetExt("flood", f)) + if (!f) { - parameter = 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); + parameter = std::string(ban ? "*" : "") + ConvToStr(nlines) + ":" +ConvToStr(nsecs); + f = new floodsettings(ban,nsecs,nlines); + ext.set(channel, f); + channel->SetModeParam('f', parameter); 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) || (ban != f->ban))) && (((nsecs > 0) && (nlines > 0)))) + { + floodsettings *fs = new floodsettings(ban,nsecs,nlines); + ext.set(channel, fs); + channel->SetModeParam('f', parameter); + return MODEACTION_ALLOW; + } + else + { + return MODEACTION_DENY; + } + } + } } } else { - WriteServ(source->fd,"608 %s %s :Invalid flood parameter",source->nick,channel->name); - parameter = ""; + source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str()); + parameter.clear(); return MODEACTION_DENY; } } else { - if (channel->GetExt("flood", f)) + if (f) { - DELETE(f); - channel->Shrink("flood"); - channel->SetMode('f', false); + ext.unset(channel); + channel->SetModeParam('f', ""); return MODEACTION_ALLOW; } } - + return MODEACTION_DENY; } }; class ModuleMsgFlood : public Module { - Server *Srv; - MsgFlood* mf; - + MsgFlood mf; + public: - - ModuleMsgFlood(Server* Me) - : Module::Module(Me) + + ModuleMsgFlood() + : mf(this) { - Srv = Me; - mf = new MsgFlood(); - Srv->AddMode(mf, 'f'); + if (!ServerInstance->Modes->AddMode(&mf)) + throw ModuleException("Could not add new modes!"); + Extensible::Register(&mf.ext); + Implementation eventlist[] = { I_OnUserPreNotice, I_OnUserPreMessage }; + ServerInstance->Modules->Attach(eventlist, this, 2); } - - void ProcessMessages(userrec* user,chanrec* dest, const std::string &text) + + ModResult ProcessMessages(User* user,Channel* dest, const std::string &text) { - if (IS_LOCAL(user)) + if (!IS_LOCAL(user) || (CHANOPS_EXEMPT('f') && dest->GetPrefixValue(user) == OP_VALUE)) + { + return MOD_RES_PASSTHRU; + } + + floodsettings *f = mf.ext.get(dest); + if (f) { - floodsettings *f; - if (dest->GetExt("flood", f)) + f->addmessage(user); + if (f->shouldkick(user)) { - f->addmessage(user); - if (f->shouldkick(user)) + /* Youre outttta here! */ + f->clear(user); + if (f->ban) { - /* Youre outttta here! */ - f->clear(user); - if (f->ban) - { - const char* parameters[3]; - parameters[0] = dest->name; - parameters[1] = "+b"; - parameters[2] = user->MakeWildHost(); - Srv->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(); - } - dest->ServerKickUser(user, "Channel flood triggered (mode +f)", true); + std::vector parameters; + parameters.push_back(dest->name); + parameters.push_back("+b"); + parameters.push_back(user->MakeWildHost()); + ServerInstance->SendMode(parameters, ServerInstance->FakeClient); + + ServerInstance->PI->SendModeStr(dest->name, std::string("+b ") + user->MakeWildHost()); } + + 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)) + { + delete dest; + } + + return MOD_RES_DENY; } } - } - virtual void OnUserMessage(userrec* user, void* dest, int target_type, const std::string &text, char status) - { - if (target_type == TYPE_CHANNEL) - { - ProcessMessages(user,(chanrec*)dest,text); - } + return MOD_RES_PASSTHRU; } - virtual void OnUserNotice(userrec* user, void* dest, int target_type, const std::string &text, char status) + ModResult OnUserPreMessage(User *user, void *dest, int target_type, std::string &text, char status, CUList &exempt_list) { if (target_type == TYPE_CHANNEL) - { - ProcessMessages(user,(chanrec*)dest,text); - } - } + return ProcessMessages(user,(Channel*)dest,text); - void OnChannelDelete(chanrec* chan) - { - floodsettings* f; - if (chan->GetExt("flood", f)) - { - DELETE(f); - chan->Shrink("flood"); - } + return MOD_RES_PASSTHRU; } - void Implements(char* List) + ModResult OnUserPreNotice(User *user, void *dest, int target_type, std::string &text, char status, CUList &exempt_list) { - List[I_On005Numeric] = List[I_OnChannelDelete] = List[I_OnUserNotice] = List[I_OnUserMessage] = 1; - } + if (target_type == TYPE_CHANNEL) + return ProcessMessages(user,(Channel*)dest,text); - virtual void On005Numeric(std::string &output) - { - InsertMode(output, "f", 3); + return MOD_RES_PASSTHRU; } - virtual ~ModuleMsgFlood() + ~ModuleMsgFlood() { - DELETE(mf); + ServerInstance->Modes->DelMode(&mf); } - - virtual Version GetVersion() - { - return Version(1,0,0,0,VF_STATIC|VF_VENDOR); - } -}; - -class ModuleMsgFloodFactory : public ModuleFactory -{ - public: - ModuleMsgFloodFactory() + Version GetVersion() { + return Version("Provides channel mode +f (message flood protection)", VF_COMMON | VF_VENDOR, API_VERSION); } - - ~ModuleMsgFloodFactory() - { - } - - virtual Module * CreateModule(Server* Me) - { - return new ModuleMsgFlood(Me); - } - }; - -extern "C" void * init_module( void ) -{ - return new ModuleMsgFloodFactory; -} - +MODULE_INIT(ModuleMsgFlood)