1 /* +------------------------------------+
\r * | Inspire Internet Relay Chat Daemon |
\r * +------------------------------------+
\r *
\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team
\r * See: http://www.inspircd.org/wiki/index.php/Credits
\r *
\r * This program is free but copyrighted software; see
\r * the file COPYING for details.
\r *
\r * ---------------------------------------------------
\r */
\r\r#include "inspircd.h"
\r#include <pcre.h>
\r#include "users.h"
\r#include "channels.h"
\r#include "modules.h"
\r#include "m_filter.h"
\r\r/* $ModDesc: m_filter with regexps */
\r/* $CompileFlags: exec("pcre-config --cflags") */
\r/* $LinkerFlags: exec("pcre-config --libs") rpath("pcre-config --libs") -lpcre */
\r/* $ModDep: m_filter.h */
\r\r#ifdef WINDOWS
\r#pragma comment(lib, "pcre.lib")
\r#endif
\r\rclass PCREFilter : public FilterResult
\r{
\r public:
\r pcre* regexp;
\r\r PCREFilter(pcre* r, const std::string &rea, const std::string &act, long gline_time, const std::string &pat, const std::string &flags)
\r : FilterResult(pat, rea, act, gline_time, flags), regexp(r)
\r {
\r }
\r\r PCREFilter()
\r {
\r }
\r};
\r\rclass ModuleFilterPCRE : public FilterBase
\r{
\r std::vector<PCREFilter> filters;
\r pcre *re;
\r const char *error;
\r int erroffset;
\r PCREFilter fr;
\r\r public:
\r ModuleFilterPCRE(InspIRCd* Me)
\r : FilterBase(Me, "m_filter_pcre.so")
\r {
\r OnRehash(NULL,"");
\r }
\r\r virtual ~ModuleFilterPCRE()
\r {
\r }
\r\r virtual FilterResult* FilterMatch(userrec* user, const std::string &text, int flags)
\r {
\r for (std::vector<PCREFilter>::iterator index = filters.begin(); index != filters.end(); index++)
\r {
\r /* Skip ones that dont apply to us */
\r\r if (!FilterBase::AppliesToMe(user, dynamic_cast<FilterResult*>(&(*index)), flags))
\r continue;
\r\r if (pcre_exec(index->regexp, NULL, text.c_str(), text.length(), 0, 0, NULL, 0) > -1)
\r {
\r fr = *index;
\r if (index != filters.begin())
\r {
\r filters.erase(index);
\r filters.insert(filters.begin(), fr);
\r }
\r return &fr;
\r }
\r }
\r return NULL;
\r }
\r\r virtual bool DeleteFilter(const std::string &freeform)
\r {
\r for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
\r {
\r if (i->freeform == freeform)
\r {
\r pcre_free((*i).regexp);
\r filters.erase(i);
\r return true;
\r }
\r }
\r return false;
\r }
\r\r virtual void SyncFilters(Module* proto, void* opaque)
\r {
\r for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
\r {
\r this->SendFilter(proto, opaque, &(*i));
\r }
\r }
\r\r virtual std::pair<bool, std::string> AddFilter(const std::string &freeform, const std::string &type, const std::string &reason, long duration, const std::string &flags)
\r {
\r for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
\r {
\r if (i->freeform == freeform)
\r {
\r return std::make_pair(false, "Filter already exists");
\r }
\r }
\r\r re = pcre_compile(freeform.c_str(),0,&error,&erroffset,NULL);
\r\r if (!re)
\r {
\r ServerInstance->Log(DEFAULT,"Error in regular expression: %s at offset %d: %s\n", freeform.c_str(), erroffset, error);
\r ServerInstance->Log(DEFAULT,"Regular expression %s not loaded.", freeform.c_str());
\r return std::make_pair(false, "Error in regular expression at offset " + ConvToStr(erroffset) + ": "+error);
\r }
\r else
\r {
\r filters.push_back(PCREFilter(re, reason, type, duration, freeform, flags));
\r return std::make_pair(true, "");
\r }
\r }
\r\r virtual void OnRehash(userrec* user, const std::string ¶meter)
\r {
\r ConfigReader MyConf(ServerInstance);
\r\r for (int index = 0; index < MyConf.Enumerate("keyword"); index++)
\r {
\r this->DeleteFilter(MyConf.ReadValue("keyword", "pattern", index));
\r\r std::string pattern = MyConf.ReadValue("keyword", "pattern", index);
\r std::string reason = MyConf.ReadValue("keyword", "reason", index);
\r std::string action = MyConf.ReadValue("keyword", "action", index);
\r std::string flags = MyConf.ReadValue("keyword", "flags", index);
\r long gline_time = ServerInstance->Duration(MyConf.ReadValue("keyword", "duration", index));
\r if (action.empty())
\r action = "none";
\r if (flags.empty())
\r flags = "*";
\r\r re = pcre_compile(pattern.c_str(),0,&error,&erroffset,NULL);
\r\r if (!re)
\r {
\r ServerInstance->Log(DEFAULT,"Error in regular expression: %s at offset %d: %s\n", pattern.c_str(), erroffset, error);
\r ServerInstance->Log(DEFAULT,"Regular expression %s not loaded.", pattern.c_str());
\r }
\r else
\r {
\r filters.push_back(PCREFilter(re, reason, action, gline_time, pattern, flags));
\r ServerInstance->Log(DEFAULT,"Regular expression %s loaded.", pattern.c_str());
\r }
\r }
\r }
\r\r virtual int OnStats(char symbol, userrec* user, string_list &results)
\r {
\r if (symbol == 's')
\r {
\r std::string sn = ServerInstance->Config->ServerName;
\r for (std::vector<PCREFilter>::iterator i = filters.begin(); i != filters.end(); i++)
\r {
\r results.push_back(sn+" 223 "+user->nick+" :REGEXP:"+i->freeform+" "+i->flags+" "+i->action+" "+ConvToStr(i->gline_time)+" :"+i->reason);
\r }
\r }
\r return 0;
\r }
\r};
\r\rMODULE_INIT(ModuleFilterPCRE);
\r\r
projects / user / henk / code / inspircd.git / blob