X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_joinflood.cpp;h=cb8c90e098a155b23cabb5314c0b541dcf0352e4;hb=8be88f3e732e7a40f2e501c5e5b78c7f1b999f2d;hp=ae31ab67c9e3f566fdd8b49d25581a9bace00a8c;hpb=5d407fb44c759524881712a80febb86b4506ddbf;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_joinflood.cpp b/src/modules/m_joinflood.cpp index ae31ab67c..cb8c90e09 100644 --- a/src/modules/m_joinflood.cpp +++ b/src/modules/m_joinflood.cpp @@ -2,33 +2,26 @@ * | 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 +j (join flood protection) */ -class joinfloodsettings +/** Holds settings and state associated with channel mode +j + */ +class joinfloodsettings : public classbase { + private: + InspIRCd* ServerInstance; public: - int secs; int joins; time_t reset; @@ -36,24 +29,20 @@ class joinfloodsettings int counter; bool locked; - joinfloodsettings() : secs(0), joins(0) {}; - joinfloodsettings(int b, int c) : secs(b), joins(c) + joinfloodsettings(InspIRCd *Instance, int b, int c) : ServerInstance(Instance), secs(b), joins(c) { - reset = time(NULL) + secs; + reset = ServerInstance->Time() + secs; counter = 0; locked = false; - log(DEBUG,"Create new joinfloodsettings: %lu %lu",time(NULL),reset); }; void addjoin() { counter++; - log(DEBUG,"joinflood counter is %d",counter); - if (time(NULL) > reset) + if (ServerInstance->Time() > reset) { - log(DEBUG,"joinflood counter reset"); counter = 0; - reset = time(NULL) + secs; + reset = ServerInstance->Time() + secs; } } @@ -64,7 +53,6 @@ class joinfloodsettings void clear() { - log(DEBUG,"joinflood counter clear"); counter = 0; } @@ -72,7 +60,7 @@ class joinfloodsettings { if (locked) { - if (time(NULL) > unlocktime) + if (ServerInstance->Time() > unlocktime) { locked = false; return false; @@ -87,103 +75,159 @@ class joinfloodsettings void lock() { - log(DEBUG,"joinflood lock"); locked = true; - unlocktime = time(NULL) + 60; + unlocktime = ServerInstance->Time() + 60; } - }; -class ModuleJoinFlood : public Module +/** Handles channel mode +j + */ +class JoinFlood : public ModeHandler { - Server *Srv; - public: - - ModuleJoinFlood(Server* Me) - : Module::Module(Me) + JoinFlood(InspIRCd* Instance) : ModeHandler(Instance, 'j', 1, 0, false, MODETYPE_CHANNEL, false) { } + + ModePair ModeSet(User* source, User* dest, Channel* channel, const std::string ¶meter) { - Srv = Me; - Srv->AddExtendedMode('j',MT_CHANNEL,false,1,0); + joinfloodsettings* x; + if (channel->GetExt("joinflood",x)) + return std::make_pair(true, ConvToStr(x->joins)+":"+ConvToStr(x->secs)); + else + return std::make_pair(false, parameter); } - - virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms) + + bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, Channel* channel) { - if ((modechar == 'j') && (type == MT_CHANNEL)) + /* 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) + { + joinfloodsettings* dummy; + + if (adding) { - if (mode_on) + char ndata[MAXBUF]; + char* data = ndata; + strlcpy(ndata,parameter.c_str(),MAXBUF); + char* joins = data; + char* secs = NULL; + while (*data) { - std::string FloodParams = params[0]; - chanrec* c = (chanrec*)target; - char ndata[MAXBUF]; - char* data = ndata; - strlcpy(ndata,FloodParams.c_str(),MAXBUF); - char* joins = data; - char* secs = NULL; - while (*data) + if (*data == ':') { - if (*data == ':') - { - *data = 0; - data++; - secs = data; - break; - } - else data++; + *data = 0; + data++; + secs = data; + break; } - if (secs) + else data++; + } + if (secs) + + { + /* Set up the flood parameters for this channel */ + int njoins = atoi(joins); + int nsecs = atoi(secs); + if ((njoins<1) || (nsecs<1)) { - /* Set up the flood parameters for this channel */ - int njoins = atoi(joins); - int nsecs = atoi(secs); - if ((njoins<1) || (nsecs<1)) + 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("joinflood", dummy)) { - WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name); - return 0; + parameter = ConvToStr(njoins) + ":" +ConvToStr(nsecs); + joinfloodsettings *f = new joinfloodsettings(ServerInstance, nsecs, njoins); + channel->Extend("joinflood", f); + channel->SetModeParam('j', parameter); + return MODEACTION_ALLOW; } else { - if (!c->GetExt("joinflood")) + std::string cur_param = channel->GetModeParameter('j'); + parameter = ConvToStr(njoins) + ":" +ConvToStr(nsecs); + if (cur_param == parameter) + { + // mode params match + return MODEACTION_DENY; + } + else { - joinfloodsettings *f = new joinfloodsettings(nsecs,njoins); - c->Extend("joinflood",(char*)f); + // new mode param, replace old with new + if ((nsecs > 0) && (njoins > 0)) + { + joinfloodsettings* f; + channel->GetExt("joinflood", f); + delete f; + f = new joinfloodsettings(ServerInstance, nsecs, njoins); + channel->Shrink("joinflood"); + channel->Extend("joinflood", f); + channel->SetModeParam('j', parameter); + return MODEACTION_ALLOW; + } + else + { + return MODEACTION_DENY; + } } } - return 1; - } - else - { - WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name); - return 0; } - } else { - chanrec* c = (chanrec*)target; - if (c->GetExt("joinflood")) - { - joinfloodsettings *f = (joinfloodsettings*)c->GetExt("joinflood"); - DELETE(f); - c->Shrink("joinflood"); - } + source->WriteNumeric(608, "%s %s :Invalid flood parameter",source->nick.c_str(),channel->name.c_str()); + return MODEACTION_DENY; } - return 1; } - return 0; + else + { + if (channel->GetExt("joinflood", dummy)) + { + joinfloodsettings *f; + channel->GetExt("joinflood", f); + delete f; + channel->Shrink("joinflood"); + channel->SetModeParam('j', ""); + return MODEACTION_ALLOW; + } + } + return MODEACTION_DENY; } +}; + +class ModuleJoinFlood : public Module +{ + + JoinFlood* jf; - virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname) + public: + + ModuleJoinFlood(InspIRCd* Me) + : Module(Me) + { + + jf = new JoinFlood(ServerInstance); + if (!ServerInstance->Modes->AddMode(jf)) + throw ModuleException("Could not add new modes!"); + Implementation eventlist[] = { I_OnChannelDelete, I_OnUserPreJoin, I_OnUserJoin }; + ServerInstance->Modules->Attach(eventlist, this, 3); + } + + virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven) { if (chan) { - joinfloodsettings *f = (joinfloodsettings*)chan->GetExt("joinflood"); - if (f) + joinfloodsettings *f; + if (chan->GetExt("joinflood", f)) { if (f->islocked()) { - WriteServ(user->fd,"609 %s %s :This channel is temporarily unavailable (+j). Please try again later.",user->nick,chan->name); + user->WriteNumeric(609, "%s %s :This channel is temporarily unavailable (+j). Please try again later.",user->nick.c_str(),chan->name.c_str()); return 1; } } @@ -191,73 +235,48 @@ class ModuleJoinFlood : public Module return 0; } - virtual void OnUserJoin(userrec* user, chanrec* channel) + virtual void OnUserJoin(User* user, Channel* channel, bool sync, bool &silent) { - joinfloodsettings *f = (joinfloodsettings*)channel->GetExt("joinflood"); - if (f) + joinfloodsettings *f; + + /* We arent interested in JOIN events caused by a network burst */ + if (sync) + return; + + /* But all others are OK */ + if (channel->GetExt("joinflood",f)) { f->addjoin(); if (f->shouldlock()) { f->clear(); f->lock(); - WriteChannelWithServ((char*)Srv->GetServerName().c_str(), channel, "NOTICE %s :This channel has been closed to new users for 60 seconds because there have been more than %d joins in %d seconds.",channel->name,f->joins,f->secs); + channel->WriteChannelWithServ((char*)ServerInstance->Config->ServerName, "NOTICE %s :This channel has been closed to new users for 60 seconds because there have been more than %d joins in %d seconds.", channel->name.c_str(), f->joins, f->secs); } } } - void OnChannelDelete(chanrec* chan) + void OnChannelDelete(Channel* chan) { - if (chan->GetExt("joinflood")) + joinfloodsettings *f; + if (chan->GetExt("joinflood",f)) { - joinfloodsettings *f = (joinfloodsettings*)chan->GetExt("joinflood"); - DELETE(f); + delete f; chan->Shrink("joinflood"); } } - void Implements(char* List) - { - List[I_On005Numeric] = List[I_OnExtendedMode] = List[I_OnChannelDelete] = List[I_OnUserPreJoin] = List[I_OnUserJoin] = 1; - } - - virtual void On005Numeric(std::string &output) - { - InsertMode(output, "j", 3); - } virtual ~ModuleJoinFlood() { + ServerInstance->Modes->DelMode(jf); + delete jf; } - - virtual Version GetVersion() - { - return Version(1,0,0,0,VF_STATIC|VF_VENDOR); - } -}; - -class ModuleJoinFloodFactory : public ModuleFactory -{ - public: - ModuleJoinFloodFactory() - { - } - - ~ModuleJoinFloodFactory() - { - } - - virtual Module * CreateModule(Server* Me) + virtual Version GetVersion() { - return new ModuleJoinFlood(Me); + return Version("$Id$", VF_COMMON | VF_VENDOR, API_VERSION); } - }; - -extern "C" void * init_module( void ) -{ - return new ModuleJoinFloodFactory; -} - +MODULE_INIT(ModuleJoinFlood)