1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd: (C) 2002-2008 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 * ---------------------------------------------------
21 /* $ModDesc: m_filter with regexps */
22 /* $CompileFlags: exec("pcre-config --cflags") */
23 /* $LinkerFlags: exec("pcre-config --libs") rpath("pcre-config --libs") -lpcre */
24 /* $ModDep: m_filter.h */
27 #pragma comment(lib, "pcre.lib")
30 class PCREFilter : public FilterResult
35 PCREFilter(pcre* r, const std::string &rea, const std::string &act, long glinetime, const std::string &pat, const std::string &flgs)
36 : FilterResult(pat, rea, act, glinetime, flgs), regexp(r)
45 class ModuleFilterPCRE : public FilterBase
47 std::vector<PCREFilter> filters;
54 ModuleFilterPCRE(InspIRCd* Me)
55 : FilterBase(Me, "m_filter_pcre.so")
61 virtual ~ModuleFilterPCRE()
65 virtual FilterResult* FilterMatch(User* user, const std::string &text, int flgs)
67 for (std::vector<PCREFilter>::iterator index = filters.begin(); index != filters.end(); index++)
69 /* Skip ones that dont apply to us */
71 if (!FilterBase::AppliesToMe(user, dynamic_cast<FilterResult*>(&(*index)), flgs))
74 if (pcre_exec(index->regexp, NULL, text.c_str(), text.length(), 0, 0, NULL, 0) > -1)
77 if (index != filters.begin())
80 filters.insert(filters.begin(), fr);
88 virtual bool DeleteFilter(const std::string &freeform)
90 for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
92 if (i->freeform == freeform)
94 pcre_free((*i).regexp);
102 virtual void SyncFilters(Module* proto, void* opaque)
104 for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
106 this->SendFilter(proto, opaque, &(*i));
110 virtual std::pair<bool, std::string> AddFilter(const std::string &freeform, const std::string &type, const std::string &reason, long duration, const std::string &flgs)
112 for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
114 if (i->freeform == freeform)
116 return std::make_pair(false, "Filter already exists");
120 re = pcre_compile(freeform.c_str(),0,&error,&erroffset,NULL);
124 ServerInstance->Logs->Log("m_filter_pcre", DEFAULT,"Error in regular expression: %s at offset %d: %s\n", freeform.c_str(), erroffset, error);
125 ServerInstance->Logs->Log("m_filter_pcre", DEFAULT,"Regular expression %s not loaded.", freeform.c_str());
126 return std::make_pair(false, "Error in regular expression at offset " + ConvToStr(erroffset) + ": "+error);
130 filters.push_back(PCREFilter(re, reason, type, duration, freeform, flgs));
131 return std::make_pair(true, "");
135 virtual void OnRehash(User* user, const std::string ¶meter)
137 ConfigReader MyConf(ServerInstance);
139 for (int index = 0; index < MyConf.Enumerate("keyword"); index++)
141 this->DeleteFilter(MyConf.ReadValue("keyword", "pattern", index));
143 std::string pattern = MyConf.ReadValue("keyword", "pattern", index);
144 std::string reason = MyConf.ReadValue("keyword", "reason", index);
145 std::string action = MyConf.ReadValue("keyword", "action", index);
146 std::string flgs = MyConf.ReadValue("keyword", "flags", index);
147 long gline_time = ServerInstance->Duration(MyConf.ReadValue("keyword", "duration", index));
153 re = pcre_compile(pattern.c_str(),0,&error,&erroffset,NULL);
157 ServerInstance->Logs->Log("CONFIG",DEFAULT,"Error in regular expression: %s at offset %d: %s\n", pattern.c_str(), erroffset, error);
158 ServerInstance->Logs->Log("CONFIG",DEFAULT,"Regular expression %s not loaded.", pattern.c_str());
162 filters.push_back(PCREFilter(re, reason, action, gline_time, pattern, flgs));
163 ServerInstance->Logs->Log("CONFIG",DEFAULT,"Regular expression %s loaded.", pattern.c_str());
166 FilterBase::OnRehash(user, parameter);
169 virtual int OnStats(char symbol, User* user, string_list &results)
173 std::string sn = ServerInstance->Config->ServerName;
174 for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
176 results.push_back(sn+" 223 "+user->nick+" :REGEXP:"+i->freeform+" "+i->flags+" "+i->action+" "+ConvToStr(i->gline_time)+" :"+i->reason);
178 for (std::vector<std::string>::iterator i = exemptfromfilter.begin(); i != exemptfromfilter.end(); ++i)
180 results.push_back(sn+" 223 "+user->nick+" :EXEMPT "+(*i));
187 MODULE_INIT(ModuleFilterPCRE)