1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 * See: http://www.inspircd.org/wiki/index.php/Credits
8 * This program is free but copyrighted software; see
9 * the file COPYING for details.
11 * ---------------------------------------------------
23 /* $ModDesc: m_filter with regexps */
24 /* $CompileFlags: `pcre-config --cflags` */
25 /* $LinkerFlags: `pcre-config --libs` rpath("pcre-config --libs") -lpcre */
26 /* $ModDep: m_filter.h */
28 class PCREFilter : public FilterResult
33 PCREFilter(pcre* r, const std::string &rea, const std::string &act, long gline_time, const std::string &pat)
34 : FilterResult::FilterResult(pat, rea, act, gline_time), regexp(r)
39 class ModuleFilterPCRE : public FilterBase
41 std::vector<PCREFilter> filters;
47 ModuleFilterPCRE(InspIRCd* Me)
48 : FilterBase::FilterBase(Me, "m_filter_pcre.so")
53 virtual ~ModuleFilterPCRE()
57 virtual FilterResult* FilterMatch(const std::string &text)
59 for (unsigned int index = 0; index < filters.size(); index++)
61 PCREFilter& filt = filters[index];
63 if (pcre_exec(filt.regexp,NULL,text.c_str(),text.length(),0,0,NULL,0) > -1)
71 virtual bool DeleteFilter(const std::string &freeform)
73 for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
75 if (i->freeform == freeform)
77 pcre_free((*i).regexp);
85 virtual void SyncFilters(Module* proto, void* opaque)
87 for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
89 this->SendFilter(proto, opaque, &(*i));
93 virtual std::pair<bool, std::string> AddFilter(const std::string &freeform, const std::string &type, const std::string &reason, long duration)
95 for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
97 if (i->freeform == freeform)
99 return std::make_pair(false, "Filter already exists");
103 re = pcre_compile(freeform.c_str(),0,&error,&erroffset,NULL);
107 ServerInstance->Log(DEFAULT,"Error in regular expression: %s at offset %d: %s\n", freeform.c_str(), erroffset, error);
108 ServerInstance->Log(DEFAULT,"Regular expression %s not loaded.", freeform.c_str());
109 return std::make_pair(false, "Error in regular expression at offset " + ConvToStr(erroffset) + ": "+error);
113 filters.push_back(PCREFilter(re, reason, type, duration, freeform));
114 return std::make_pair(true, "");
118 virtual void OnRehash(userrec* user, const std::string ¶meter)
120 ConfigReader MyConf(ServerInstance);
122 for (int index = 0; index < MyConf.Enumerate("keyword"); index++)
124 this->DeleteFilter(MyConf.ReadValue("keyword", "pattern", index));
126 std::string pattern = MyConf.ReadValue("keyword", "pattern", index);
127 std::string reason = MyConf.ReadValue("keyword", "reason", index);
128 std::string action = MyConf.ReadValue("keyword", "action", index);
129 long gline_time = ServerInstance->Duration(MyConf.ReadValue("keyword", "duration", index).c_str());
131 re = pcre_compile(pattern.c_str(),0,&error,&erroffset,NULL);
135 ServerInstance->Log(DEFAULT,"Error in regular expression: %s at offset %d: %s\n", pattern.c_str(), erroffset, error);
136 ServerInstance->Log(DEFAULT,"Regular expression %s not loaded.", pattern.c_str());
140 filters.push_back(PCREFilter(re, reason, action, gline_time, pattern));
141 ServerInstance->Log(DEFAULT,"Regular expression %s loaded.", pattern.c_str());
146 virtual int OnStats(char symbol, userrec* user, string_list &results)
150 std::string sn = ServerInstance->Config->ServerName;
151 for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
153 results.push_back(sn+" 223 "+user->nick+" :REGEXP:"+i->freeform+" "+i->action+" "+ConvToStr(i->gline_time)+" :"+i->reason);
161 class ModuleFilterPCREFactory : public ModuleFactory
164 ModuleFilterPCREFactory()
168 ~ModuleFilterPCREFactory()
172 virtual Module * CreateModule(InspIRCd* Me)
174 return new ModuleFilterPCRE(Me);
180 extern "C" void * init_module( void )
182 return new ModuleFilterPCREFactory;