diff options
| -rw-r--r-- | src/modules/m_joinflood.cpp | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/src/modules/m_joinflood.cpp b/src/modules/m_joinflood.cpp new file mode 100644 index 000000000..8d0716d22 --- /dev/null +++ b/src/modules/m_joinflood.cpp @@ -0,0 +1,274 @@ +/* +------------------------------------+ + * | Inspire Internet Relay Chat Daemon | + * +------------------------------------+ + * + * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. + * E-mail: + * <brain@chatspike.net> + * <Craig@chatspike.net> + * + * Written by Craig Edwards, Craig McLure, and others. + * This program is free but copyrighted software; see + * the file COPYING for details. + * + * --------------------------------------------------- + */ + +using namespace std; + +#include <stdio.h> +#include <map> +#include "users.h" +#include "channels.h" +#include "modules.h" +#include "helperfuncs.h" + +/* $ModDesc: Provides channel mode +f (message flood protection) */ + +class joinfloodsettings +{ + public: + + int secs; + int joins; + time_t reset; + time_t unlocktime; + int counter; + bool locked; + + joinfloodsettings() : secs(0), joins(0) {}; + joinfloodsettings(int b, int c) : secs(b), joins(c) + { + reset = time(NULL) + secs; + counter = 0; + locked = false; + log(DEBUG,"Create new joinfloodsettings: %lu %lu",time(NULL),reset); + }; + + void addjoin() + { + counter++; + if (time(NULL) > reset) + { + counter = 0; + reset = time(NULL) + secs; + } + } + + bool shouldlock() + { + return (counter >= this->joins); + } + + void clear() + { + counter = 0; + } + + bool islocked() + { + if (locked) + { + if (time(NULL) > unlocktime) + { + locked = false; + return false; + } + else + { + return true; + } + } + return false; + } + + void lock() + { + locked = true; + unlocktime = time(NULL) + 60; + } + + +}; + +class ModuleJoinFlood : public Module +{ + Server *Srv; + + public: + + ModuleJoinFlood(Server* Me) + : Module::Module(Me) + { + Srv = Me; + Srv->AddExtendedMode('j',MT_CHANNEL,false,1,0); + } + + virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms) + { + if ((modechar == 'j') && (type == MT_CHANNEL)) + { + if (mode_on) + { + 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 == ':') + { + *data = 0; + data++; + secs = data; + break; + } + 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)) + { + WriteServ(user->fd,"608 %s %s :Invalid flood parameter",user->nick,c->name); + return 0; + } + else + { + if (!c->GetExt("joinflood")) + { + joinfloodsettings *f = new joinfloodsettings(njoins,nsecs); + c->Extend("joinflood",(char*)f); + } + } + 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"); + } + } + return 1; + } + return 0; + } + + virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname) + { + if (chan) + { + joinfloodsettings *f = (joinfloodsettings*)chan->GetExt("joinflood"); + if (f) + { + if (f->islocked()) + { + WriteServ(user->fd,"609 %s %s :This channel is temporarily unavailable (+j). Please try again later.",user->nick,chan->name); + return 1; + } + } + } + return 0; + } + + virtual void OnUserJoin(userrec* user, chanrec* channel) + { + joinfloodsettings *f = (joinfloodsettings*)channel->GetExt("joinflood"); + if (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); + } + } + } + + void OnChannelDelete(chanrec* chan) + { + if (chan->GetExt("joinflood")) + { + joinfloodsettings *f = (joinfloodsettings*)chan->GetExt("joinflood"); + 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) + { + 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,"j"); + } + temp2 = temp2 + temp1 + " "; + } + if (temp2.length()) + output = temp2.substr(0,temp2.length()-1); + } + + virtual ~ModuleJoinFlood() + { + } + + 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) + { + return new ModuleJoinFlood(Me); + } + +}; + + +extern "C" void * init_module( void ) +{ + return new ModuleJoinFloodFactory; +} + |