X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fextra%2Fm_filter_pcre.cpp;h=4710d7a33b5836d67ff69274f94c8c0363be0cf9;hb=b950e46bfeef5643ff68c8c78530c1eff25d024e;hp=fe3d721d45b2244dd628231d2643a0837b15aa11;hpb=fe96061b003b7064b3e17c468a8851784890f7b8;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/extra/m_filter_pcre.cpp b/src/modules/extra/m_filter_pcre.cpp index fe3d721d4..4710d7a33 100644 --- a/src/modules/extra/m_filter_pcre.cpp +++ b/src/modules/extra/m_filter_pcre.cpp @@ -2,224 +2,187 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd is copyright (C) 2002-2004 ChatSpike-Dev. - * E-mail: - * - * - * - * Written by Craig Edwards, Craig McLure, and others. + * InspIRCd: (C) 2002-2008 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. + * the file COPYING for details. * * --------------------------------------------------- */ -using namespace std; - -// Message and notice filtering using regex patterns -// a module based on the original work done by Craig Edwards in 2003 -// for the chatspike network. - -#include -#include +#include "inspircd.h" #include #include "users.h" #include "channels.h" #include "modules.h" -#include "helperfuncs.h" +#include "m_filter.h" + +/* $ModDesc: m_filter with regexps */ +/* $CompileFlags: exec("pcre-config --cflags") */ +/* $LinkerFlags: exec("pcre-config --libs") rpath("pcre-config --libs") -lpcre */ +/* $ModDep: m_filter.h */ -class FilterPCREException +#ifdef WINDOWS +#pragma comment(lib, "pcre.lib") +#endif + +class PCREFilter : public FilterResult { public: - virtual char* GetReason() - { - return "Could not find definition in your config file!"; - } -}; + pcre* regexp; -/* $ModDesc: m_filter with regexps */ -/* $CompileFlags: -I/usr/local/include */ -/* $LinkerFlags: -L/usr/local/lib -lpcre */ + PCREFilter(pcre* r, const std::string &rea, const std::string &act, long glinetime, const std::string &pat, const std::string &flgs) + : FilterResult(pat, rea, act, glinetime, flgs), regexp(r) + { + } -class ModuleFilterPCRE : public Module + PCREFilter() + { + } +}; + +class ModuleFilterPCRE : public FilterBase { - Server *Srv; - ConfigReader *Conf, *MyConf; - std::vector filters; + std::vector filters; pcre *re; const char *error; int erroffset; - + PCREFilter fr; + public: - ModuleFilterPCRE(Server* Me) - : Module::Module(Me) + ModuleFilterPCRE(InspIRCd* Me) + : FilterBase(Me, "m_filter_pcre.so") { - // read the configuration file on startup. - // it is perfectly valid to set to the value of the - // main config file, then append your tags to the bottom - // of the main config... but rather messy. That's why the capability - // of using a seperate config file is provided. - Srv = Me; - Conf = new ConfigReader; - std::string filterfile = Conf->ReadValue("filter","file",0); - MyConf = new ConfigReader(filterfile); - if ((filterfile == "") || (!MyConf->Verify())) - { - FilterPCREException e; - throw(e); - } - Srv->Log(DEFAULT,std::string("m_filter_pcre: read configuration from ")+filterfile); - - filters.clear(); - for (int index = 0; index < MyConf->Enumerate("keyword"); index++) - { - std::string pattern = MyConf->ReadValue("keyword","pattern",index); - re = pcre_compile(pattern.c_str(),0,&error,&erroffset,NULL); - if (!re) - { - log(DEFAULT,"Error in regular expression: %s at offset %d: %s\n", pattern.c_str(), erroffset, error); - log(DEFAULT,"Regular expression %s not loaded.", pattern.c_str()); - } - else - { - filters.push_back(re); - log(DEFAULT,"Regular expression %s loaded.", pattern.c_str()); - } - } + OnRehash(NULL,""); } - + virtual ~ModuleFilterPCRE() { - delete MyConf; - delete Conf; } - void Implements(char* List) - { - List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnRehash] = 1; - } - - // format of a config entry is - - virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status) + virtual FilterResult* FilterMatch(User* user, const std::string &text, int flgs) { - return OnUserPreNotice(user,dest,target_type,text,status); - } - - virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status) - { - for (unsigned int index = 0; index < filters.size(); index++) + for (std::vector::iterator index = filters.begin(); index != filters.end(); index++) { - if (pcre_exec(filters[index],NULL,text.c_str(),text.length(),0,0,NULL,0) > -1) + /* Skip ones that dont apply to us */ + + if (!FilterBase::AppliesToMe(user, dynamic_cast(&(*index)), flgs)) + continue; + + if (pcre_exec(index->regexp, NULL, text.c_str(), text.length(), 0, 0, NULL, 0) > -1) { - std::string target = ""; - std::string reason = MyConf->ReadValue("keyword","reason",index); - std::string do_action = MyConf->ReadValue("keyword","action",index); - - if (do_action == "") - do_action = "none"; - - if (target_type == TYPE_USER) - { - userrec* t = (userrec*)dest; - target = std::string(t->nick); - } - else if (target_type == TYPE_CHANNEL) - { - chanrec* t = (chanrec*)dest; - target = std::string(t->name); - } - if (do_action == "block") - { - Srv->SendOpers(std::string("Filter: ")+std::string(user->nick)+ - std::string(" had their notice filtered, target was ")+ - target+": "+reason); - Srv->SendTo(NULL,user,"NOTICE "+std::string(user->nick)+ - " :Your notice has been filtered and opers notified: "+reason); - } - Srv->Log(DEFAULT,std::string("Filter: ")+std::string(user->nick)+ - std::string(" had their notice filtered, target was ")+ - target+": "+reason+" Action: "+do_action); - - if (do_action == "kill") + fr = *index; + if (index != filters.begin()) { - Srv->QuitUser(user,reason); + filters.erase(index); + filters.insert(filters.begin(), fr); } - return 1; + return &fr; } } - return 0; + return NULL; } - - virtual void OnRehash(std::string parameter) + + virtual bool DeleteFilter(const std::string &freeform) { - // reload our config file on rehash - we must destroy and re-allocate the classes - // to call the constructor again and re-read our data. - delete Conf; - delete MyConf; - Conf = new ConfigReader; - std::string filterfile = Conf->ReadValue("filter","file",0); - // this automatically re-reads the configuration file into the class - MyConf = new ConfigReader(filterfile); - if ((filterfile == "") || (!MyConf->Verify())) + for (std::vector::iterator i = filters.begin(); i != filters.end(); i++) { - FilterPCREException e; - // bail if the user forgot to create a config file - throw(e); + if (i->freeform == freeform) + { + pcre_free((*i).regexp); + filters.erase(i); + return true; + } } - Srv->Log(DEFAULT,std::string("m_filter_pcre: read configuration from ")+filterfile); - - filters.clear(); - for (int index = 0; index < MyConf->Enumerate("keyword"); index++) - { - std::string pattern = MyConf->ReadValue("keyword","pattern",index); - re = pcre_compile(pattern.c_str(),0,&error,&erroffset,NULL); - if (!re) - { - log(DEFAULT,"Error in regular expression: %s at offset %d: %s\n", pattern.c_str(), erroffset, error); - log(DEFAULT,"Regular expression %s not loaded.", pattern.c_str()); - } - else - { - filters.push_back(re); - log(DEFAULT,"Regular expression %s loaded.", pattern.c_str()); - } - } - + return false; } - - virtual Version GetVersion() + + virtual void SyncFilters(Module* proto, void* opaque) { - // This is version 2 because version 1.x is the unreleased unrealircd module - return Version(3,0,0,0,VF_VENDOR); + for (std::vector::iterator i = filters.begin(); i != filters.end(); i++) + { + this->SendFilter(proto, opaque, &(*i)); + } } - -}; - -// stuff down here is the module-factory stuff. For basic modules you can ignore this. -class ModuleFilterPCREFactory : public ModuleFactory -{ - public: - ModuleFilterPCREFactory() + virtual std::pair AddFilter(const std::string &freeform, const std::string &type, const std::string &reason, long duration, const std::string &flgs) { + for (std::vector::iterator i = filters.begin(); i != filters.end(); i++) + { + if (i->freeform == freeform) + { + return std::make_pair(false, "Filter already exists"); + } + } + + re = pcre_compile(freeform.c_str(),0,&error,&erroffset,NULL); + + if (!re) + { + ServerInstance->Logs->Log("m_filter_pcre", DEFAULT,"Error in regular expression: %s at offset %d: %s\n", freeform.c_str(), erroffset, error); + ServerInstance->Logs->Log("m_filter_pcre", DEFAULT,"Regular expression %s not loaded.", freeform.c_str()); + return std::make_pair(false, "Error in regular expression at offset " + ConvToStr(erroffset) + ": "+error); + } + else + { + filters.push_back(PCREFilter(re, reason, type, duration, freeform, flgs)); + return std::make_pair(true, ""); + } } - - ~ModuleFilterPCREFactory() + + virtual void OnRehash(User* user, const std::string ¶meter) { + ConfigReader MyConf(ServerInstance); + + for (int index = 0; index < MyConf.Enumerate("keyword"); index++) + { + this->DeleteFilter(MyConf.ReadValue("keyword", "pattern", index)); + + std::string pattern = MyConf.ReadValue("keyword", "pattern", index); + std::string reason = MyConf.ReadValue("keyword", "reason", index); + std::string action = MyConf.ReadValue("keyword", "action", index); + std::string flgs = MyConf.ReadValue("keyword", "flags", index); + long gline_time = ServerInstance->Duration(MyConf.ReadValue("keyword", "duration", index)); + if (action.empty()) + action = "none"; + if (flgs.empty()) + flgs = "*"; + + re = pcre_compile(pattern.c_str(),0,&error,&erroffset,NULL); + + if (!re) + { + ServerInstance->Logs->Log("CONFIG",DEFAULT,"Error in regular expression: %s at offset %d: %s\n", pattern.c_str(), erroffset, error); + ServerInstance->Logs->Log("CONFIG",DEFAULT,"Regular expression %s not loaded.", pattern.c_str()); + } + else + { + filters.push_back(PCREFilter(re, reason, action, gline_time, pattern, flgs)); + ServerInstance->Logs->Log("CONFIG",DEFAULT,"Regular expression %s loaded.", pattern.c_str()); + } + } + FilterBase::OnRehash(user, parameter); } - - virtual Module * CreateModule(Server* Me) + + virtual int OnStats(char symbol, User* user, string_list &results) { - return new ModuleFilterPCRE(Me); + if (symbol == 's') + { + std::string sn = ServerInstance->Config->ServerName; + for (std::vector::iterator i = filters.begin(); i != filters.end(); i++) + { + results.push_back(sn+" 223 "+user->nick+" :REGEXP:"+i->freeform+" "+i->flags+" "+i->action+" "+ConvToStr(i->gline_time)+" :"+i->reason); + } + for (std::vector::iterator i = exemptfromfilter.begin(); i != exemptfromfilter.end(); ++i) + { + results.push_back(sn+" 223 "+user->nick+" :EXEMPT "+(*i)); + } + } + return 0; } - }; - -extern "C" void * init_module( void ) -{ - return new ModuleFilterPCREFactory; -} +MODULE_INIT(ModuleFilterPCRE)