-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2007 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2004, 2008 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * This file is part of InspIRCd. InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
*
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+
#include "inspircd.h"
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
-#include "m_filter.h"
+#include "xline.h"
+#include "modules/regex.h"
-/* $ModDesc: An advanced spam filtering module */
-/* $ModDep: m_filter.h */
+/* $ModDesc: Text (spam) filtering */
-typedef std::map<std::string,FilterResult*> filter_t;
+class ModuleFilter;
+
+enum FilterFlags
+{
+ FLAG_PART = 2,
+ FLAG_QUIT = 4,
+ FLAG_PRIVMSG = 8,
+ FLAG_NOTICE = 16
+};
+
+enum FilterAction
+{
+ FA_GLINE,
+ FA_BLOCK,
+ FA_SILENT,
+ FA_KILL,
+ FA_NONE
+};
-class ModuleFilter : public FilterBase
+class FilterResult
{
-
- filter_t filters;
+ public:
+ std::string freeform;
+ std::string reason;
+ FilterAction action;
+ long gline_time;
+
+ bool flag_no_opers;
+ bool flag_part_message;
+ bool flag_quit_message;
+ bool flag_privmsg;
+ bool flag_notice;
+ bool flag_strip_color;
+
+ FilterResult(const std::string free, const std::string &rea, FilterAction act, long gt, const std::string &fla) :
+ freeform(free), reason(rea), action(act), gline_time(gt)
+ {
+ this->FillFlags(fla);
+ }
+
+ char FillFlags(const std::string &fl)
+ {
+ flag_no_opers = flag_part_message = flag_quit_message = flag_privmsg =
+ flag_notice = flag_strip_color = false;
+
+ for (std::string::const_iterator n = fl.begin(); n != fl.end(); ++n)
+ {
+ switch (*n)
+ {
+ case 'o':
+ flag_no_opers = true;
+ break;
+ case 'P':
+ flag_part_message = true;
+ break;
+ case 'q':
+ flag_quit_message = true;
+ break;
+ case 'p':
+ flag_privmsg = true;
+ break;
+ case 'n':
+ flag_notice = true;
+ break;
+ case 'c':
+ flag_strip_color = true;
+ break;
+ case '*':
+ flag_no_opers = flag_part_message = flag_quit_message =
+ flag_privmsg = flag_notice = flag_strip_color = true;
+ break;
+ default:
+ return *n;
+ break;
+ }
+ }
+ return 0;
+ }
+
+ std::string GetFlags()
+ {
+ std::string flags;
+ if (flag_no_opers)
+ flags.push_back('o');
+ if (flag_part_message)
+ flags.push_back('P');
+ if (flag_quit_message)
+ flags.push_back('q');
+ if (flag_privmsg)
+ flags.push_back('p');
+ if (flag_notice)
+ flags.push_back('n');
+
+ /* Order is important here, 'c' must be the last char in the string as it is unsupported
+ * on < 2.0.10, and the logic in FillFlags() stops parsing when it ecounters an unknown
+ * character.
+ */
+ if (flag_strip_color)
+ flags.push_back('c');
+
+ if (flags.empty())
+ flags.push_back('-');
+
+ return flags;
+ }
+ FilterResult()
+ {
+ }
+};
+
+class CommandFilter : public Command
+{
public:
- ModuleFilter(InspIRCd* Me)
- : FilterBase(Me, "m_filter.so")
+ CommandFilter(Module* f)
+ : Command(f, "FILTER", 1, 5)
{
- OnRehash(NULL,"");
+ flags_needed = 'o';
+ this->syntax = "<filter-definition> <action> <flags> [<gline-duration>] :<reason>";
}
-
- virtual ~ModuleFilter()
+ CmdResult Handle(const std::vector<std::string>&, User*);
+
+ RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters)
{
+ return ROUTE_BROADCAST;
}
+};
+
+class ImplFilter : public FilterResult
+{
+ public:
+ Regex* regex;
+
+ ImplFilter(ModuleFilter* mymodule, const std::string &rea, FilterAction act, long glinetime, const std::string &pat, const std::string &flgs);
+};
+
+
+class ModuleFilter : public Module
+{
+ bool initing;
+ RegexFactory* factory;
+ void FreeFilters();
+
+ public:
+ CommandFilter filtcommand;
+ dynamic_reference<RegexFactory> RegexEngine;
+
+ std::vector<ImplFilter> filters;
+ int flags;
+
+ std::set<std::string> exemptfromfilter; // List of channel names excluded from filtering.
+
+ ModuleFilter();
+ void init();
+ CullResult cull();
+ ModResult OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
+ FilterResult* FilterMatch(User* user, const std::string &text, int flags);
+ bool DeleteFilter(const std::string &freeform);
+ std::pair<bool, std::string> AddFilter(const std::string &freeform, FilterAction type, const std::string &reason, long duration, const std::string &flags);
+ ModResult OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
+ void OnRehash(User* user);
+ Version GetVersion();
+ std::string EncodeFilter(FilterResult* filter);
+ FilterResult DecodeFilter(const std::string &data);
+ void OnSyncNetwork(Module* proto, void* opaque);
+ void OnDecodeMetaData(Extensible* target, const std::string &extname, const std::string &extdata);
+ ModResult OnStats(char symbol, User* user, string_list &results);
+ ModResult OnPreCommand(std::string &command, std::vector<std::string> ¶meters, LocalUser *user, bool validated, const std::string &original_line);
+ void OnUnloadModule(Module* mod);
+ bool AppliesToMe(User* user, FilterResult* filter, int flags);
+ void ReadFilters();
+ static bool StringToFilterAction(const std::string& str, FilterAction& fa);
+ static std::string FilterActionToString(FilterAction fa);
+};
- virtual FilterResult* FilterMatch(userrec* user, const std::string &text, int flags)
+CmdResult CommandFilter::Handle(const std::vector<std::string> ¶meters, User *user)
+{
+ if (parameters.size() == 1)
+ {
+ /* Deleting a filter */
+ Module *me = creator;
+ if (static_cast<ModuleFilter *>(me)->DeleteFilter(parameters[0]))
+ {
+ user->WriteServ("NOTICE %s :*** Removed filter '%s'", user->nick.c_str(), parameters[0].c_str());
+ ServerInstance->SNO->WriteToSnoMask(IS_LOCAL(user) ? 'a' : 'A', "FILTER: "+user->nick+" removed filter '"+parameters[0]+"'");
+ return CMD_SUCCESS;
+ }
+ else
+ {
+ user->WriteServ("NOTICE %s :*** Filter '%s' not found in list, try /stats s.", user->nick.c_str(), parameters[0].c_str());
+ return CMD_FAILURE;
+ }
+ }
+ else
{
- for (filter_t::iterator index = filters.begin(); index != filters.end(); index++)
+ /* Adding a filter */
+ if (parameters.size() >= 4)
{
+ const std::string& freeform = parameters[0];
+ FilterAction type;
+ const std::string& flags = parameters[2];
+ unsigned int reasonindex;
+ long duration = 0;
- /* Skip ones that dont apply to us */
- if (!FilterBase::AppliesToMe(user, index->second, flags))
- continue;
+ if (!ModuleFilter::StringToFilterAction(parameters[1], type))
+ {
+ user->WriteServ("NOTICE %s :*** Invalid filter type '%s'. Supported types are 'gline', 'none', 'block', 'silent' and 'kill'.", user->nick.c_str(), parameters[1].c_str());
+ return CMD_FAILURE;
+ }
- if (ServerInstance->MatchText(text,index->first))
+ if (type == FA_GLINE)
{
- FilterResult* fr = index->second;
- if (index != filters.begin())
+ if (parameters.size() >= 5)
+ {
+ duration = InspIRCd::Duration(parameters[3]);
+ reasonindex = 4;
+ }
+ else
{
- std::string pat = index->first;
- filters.erase(index);
- filters.insert(filters.begin(), std::make_pair(pat,fr));
+ user->WriteServ("NOTICE %s :*** Not enough parameters: When setting a gline type filter, a gline duration must be specified as the third parameter.", user->nick.c_str());
+ return CMD_FAILURE;
}
- return fr;
}
+ else
+ {
+ reasonindex = 3;
+ }
+
+ Module *me = creator;
+ std::pair<bool, std::string> result = static_cast<ModuleFilter *>(me)->AddFilter(freeform, type, parameters[reasonindex], duration, flags);
+ if (result.first)
+ {
+ user->WriteServ("NOTICE %s :*** Added filter '%s', type '%s'%s%s, flags '%s', reason: '%s'", user->nick.c_str(), freeform.c_str(),
+ parameters[1].c_str(), (duration ? ", duration " : ""), (duration ? parameters[3].c_str() : ""),
+ flags.c_str(), parameters[reasonindex].c_str());
+
+ ServerInstance->SNO->WriteToSnoMask(IS_LOCAL(user) ? 'a' : 'A', "FILTER: "+user->nick+" added filter '"+freeform+"', type '"+parameters[1]+"', "+(duration ? "duration "+parameters[3]+", " : "")+"flags '"+flags+"', reason: "+parameters[reasonindex]);
+
+ return CMD_SUCCESS;
+ }
+ else
+ {
+ user->WriteServ("NOTICE %s :*** Filter '%s' could not be added: %s", user->nick.c_str(), freeform.c_str(), result.second.c_str());
+ return CMD_FAILURE;
+ }
+ }
+ else
+ {
+ user->WriteServ("NOTICE %s :*** Not enough parameters.", user->nick.c_str());
+ return CMD_FAILURE;
}
- return NULL;
+
}
+}
+
+bool ModuleFilter::AppliesToMe(User* user, FilterResult* filter, int iflags)
+{
+ if ((filter->flag_no_opers) && user->IsOper())
+ return false;
+ if ((iflags & FLAG_PRIVMSG) && (!filter->flag_privmsg))
+ return false;
+ if ((iflags & FLAG_NOTICE) && (!filter->flag_notice))
+ return false;
+ if ((iflags & FLAG_QUIT) && (!filter->flag_quit_message))
+ return false;
+ if ((iflags & FLAG_PART) && (!filter->flag_part_message))
+ return false;
+ return true;
+}
+
+ModuleFilter::ModuleFilter()
+ : initing(true), filtcommand(this), RegexEngine(this, "regex")
+{
+}
- virtual bool DeleteFilter(const std::string &freeform)
+void ModuleFilter::init()
+{
+ ServerInstance->Modules->AddService(filtcommand);
+ Implementation eventlist[] = { I_OnPreCommand, I_OnStats, I_OnSyncNetwork, I_OnDecodeMetaData, I_OnUserPreMessage, I_OnUserPreNotice, I_OnRehash, I_OnUnloadModule };
+ ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
+ OnRehash(NULL);
+}
+
+CullResult ModuleFilter::cull()
+{
+ FreeFilters();
+ return Module::cull();
+}
+
+void ModuleFilter::FreeFilters()
+{
+ for (std::vector<ImplFilter>::const_iterator i = filters.begin(); i != filters.end(); ++i)
+ delete i->regex;
+
+ filters.clear();
+}
+
+ModResult ModuleFilter::OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
+{
+ if (!IS_LOCAL(user))
+ return MOD_RES_PASSTHRU;
+
+ flags = FLAG_PRIVMSG;
+ return OnUserPreNotice(user,dest,target_type,text,status,exempt_list);
+}
+
+ModResult ModuleFilter::OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
+{
+ /* Leave ulines alone */
+ if ((ServerInstance->ULine(user->server)) || (!IS_LOCAL(user)))
+ return MOD_RES_PASSTHRU;
+
+ if (!flags)
+ flags = FLAG_NOTICE;
+
+ FilterResult* f = this->FilterMatch(user, text, flags);
+ if (f)
{
- if (filters.find(freeform) != filters.end())
+ std::string target;
+ if (target_type == TYPE_USER)
{
- delete (filters.find(freeform))->second;
- filters.erase(filters.find(freeform));
- return true;
+ User* t = (User*)dest;
+ target = t->nick;
}
- return false;
+ else if (target_type == TYPE_CHANNEL)
+ {
+ Channel* t = (Channel*)dest;
+ if (exemptfromfilter.find(t->name) != exemptfromfilter.end())
+ return MOD_RES_PASSTHRU;
+
+ target = t->name;
+ }
+ if (f->action == FA_BLOCK)
+ {
+ ServerInstance->SNO->WriteGlobalSno('a', "FILTER: "+user->nick+" had their message filtered, target was "+target+": "+f->reason);
+ if (target_type == TYPE_CHANNEL)
+ user->WriteNumeric(404, "%s %s :Message to channel blocked and opers notified (%s)",user->nick.c_str(), target.c_str(), f->reason.c_str());
+ else
+ user->WriteServ("NOTICE "+user->nick+" :Your message to "+target+" was blocked and opers notified: "+f->reason);
+ }
+ else if (f->action == FA_SILENT)
+ {
+ if (target_type == TYPE_CHANNEL)
+ user->WriteNumeric(404, "%s %s :Message to channel blocked (%s)",user->nick.c_str(), target.c_str(), f->reason.c_str());
+ else
+ user->WriteServ("NOTICE "+user->nick+" :Your message to "+target+" was blocked: "+f->reason);
+ }
+ else if (f->action == FA_KILL)
+ {
+ ServerInstance->Users->QuitUser(user, "Filtered: " + f->reason);
+ }
+ else if (f->action == FA_GLINE)
+ {
+ GLine* gl = new GLine(ServerInstance->Time(), f->gline_time, ServerInstance->Config->ServerName.c_str(), f->reason.c_str(), "*", user->GetIPString());
+ if (ServerInstance->XLines->AddLine(gl,NULL))
+ {
+ ServerInstance->XLines->ApplyLines();
+ }
+ else
+ delete gl;
+ }
+
+ ServerInstance->Logs->Log("FILTER",LOG_DEFAULT,"FILTER: "+ user->nick + " had their message filtered, target was " + target + ": " + f->reason + " Action: " + ModuleFilter::FilterActionToString(f->action));
+ return MOD_RES_DENY;
}
+ return MOD_RES_PASSTHRU;
+}
- 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)
+ModResult ModuleFilter::OnPreCommand(std::string &command, std::vector<std::string> ¶meters, LocalUser *user, bool validated, const std::string &original_line)
+{
+ if (validated && IS_LOCAL(user))
{
- if (filters.find(freeform) != filters.end())
+ flags = 0;
+ bool parting;
+
+ if (command == "QUIT")
{
- return std::make_pair(false, "Filter already exists");
+ /* QUIT with no reason: nothing to do */
+ if (parameters.size() < 1)
+ return MOD_RES_PASSTHRU;
+
+ parting = false;
+ flags = FLAG_QUIT;
+ }
+ else if (command == "PART")
+ {
+ /* PART with no reason: nothing to do */
+ if (parameters.size() < 2)
+ return MOD_RES_PASSTHRU;
+
+ if (exemptfromfilter.find(parameters[0]) != exemptfromfilter.end())
+ return MOD_RES_PASSTHRU;
+
+ parting = true;
+ flags = FLAG_PART;
+ }
+ else
+ /* We're only messing with PART and QUIT */
+ return MOD_RES_PASSTHRU;
+
+ FilterResult* f = this->FilterMatch(user, parameters[parting ? 1 : 0], flags);
+ if (!f)
+ /* PART or QUIT reason doesnt match a filter */
+ return MOD_RES_PASSTHRU;
+
+ /* We cant block a part or quit, so instead we change the reason to 'Reason filtered' */
+ parameters[parting ? 1 : 0] = "Reason filtered";
+
+ /* We're blocking, OR theyre quitting and its a KILL action
+ * (we cant kill someone whos already quitting, so filter them anyway)
+ */
+ if ((f->action == FA_BLOCK) || (((!parting) && (f->action == FA_KILL))) || (f->action == FA_SILENT))
+ {
+ return MOD_RES_PASSTHRU;
+ }
+ else
+ {
+ /* Are they parting, if so, kill is applicable */
+ if ((parting) && (f->action == FA_KILL))
+ {
+ user->WriteServ("NOTICE %s :*** Your PART message was filtered: %s", user->nick.c_str(), f->reason.c_str());
+ ServerInstance->Users->QuitUser(user, "Filtered: " + f->reason);
+ }
+ if (f->action == FA_GLINE)
+ {
+ /* Note: We gline *@IP so that if their host doesnt resolve the gline still applies. */
+ GLine* gl = new GLine(ServerInstance->Time(), f->gline_time, ServerInstance->Config->ServerName.c_str(), f->reason.c_str(), "*", user->GetIPString());
+ if (ServerInstance->XLines->AddLine(gl,NULL))
+ {
+ ServerInstance->XLines->ApplyLines();
+ }
+ else
+ delete gl;
+ }
+ return MOD_RES_DENY;
}
+ }
+ return MOD_RES_PASSTHRU;
+}
- FilterResult* x = new FilterResult(freeform, reason, type, duration, flags);
- filters[freeform] = x;
+void ModuleFilter::OnRehash(User* user)
+{
+ ConfigTagList tags = ServerInstance->Config->ConfTags("exemptfromfilter");
+ exemptfromfilter.clear();
+ for (ConfigIter i = tags.first; i != tags.second; ++i)
+ {
+ std::string chan = i->second->getString("channel");
+ if (!chan.empty())
+ exemptfromfilter.insert(chan);
+ }
+
+ std::string newrxengine = ServerInstance->Config->ConfValue("filteropts")->getString("engine");
- return std::make_pair(true, "");
+ factory = RegexEngine ? (RegexEngine.operator->()) : NULL;
+
+ if (newrxengine.empty())
+ RegexEngine.SetProvider("regex");
+ else
+ RegexEngine.SetProvider("regex/" + newrxengine);
+
+ if (!RegexEngine)
+ {
+ if (newrxengine.empty())
+ ServerInstance->SNO->WriteGlobalSno('a', "WARNING: No regex engine loaded - Filter functionality disabled until this is corrected.");
+ else
+ ServerInstance->SNO->WriteGlobalSno('a', "WARNING: Regex engine '%s' is not loaded - Filter functionality disabled until this is corrected.", newrxengine.c_str());
+
+ initing = false;
+ FreeFilters();
+ return;
+ }
+
+ if ((!initing) && (RegexEngine.operator->() != factory))
+ {
+ ServerInstance->SNO->WriteGlobalSno('a', "Dumping all filters due to regex engine change");
+ FreeFilters();
+ }
+
+ initing = false;
+ ReadFilters();
+}
+
+Version ModuleFilter::GetVersion()
+{
+ return Version("Text (spam) filtering", VF_VENDOR | VF_COMMON, RegexEngine ? RegexEngine->name : "");
+}
+
+std::string ModuleFilter::EncodeFilter(FilterResult* filter)
+{
+ std::ostringstream stream;
+ std::string x = filter->freeform;
+
+ /* Hax to allow spaces in the freeform without changing the design of the irc protocol */
+ for (std::string::iterator n = x.begin(); n != x.end(); n++)
+ if (*n == ' ')
+ *n = '\7';
+
+ stream << x << " " << FilterActionToString(filter->action) << " " << filter->GetFlags() << " " << filter->gline_time << " :" << filter->reason;
+ return stream.str();
+}
+
+FilterResult ModuleFilter::DecodeFilter(const std::string &data)
+{
+ std::string filteraction;
+ FilterResult res;
+ irc::tokenstream tokens(data);
+ tokens.GetToken(res.freeform);
+ tokens.GetToken(filteraction);
+ if (!StringToFilterAction(filteraction, res.action))
+ throw ModuleException("Invalid action: " + filteraction);
+
+ std::string filterflags;
+ tokens.GetToken(filterflags);
+ char c = res.FillFlags(filterflags);
+ if (c != 0)
+ throw ModuleException("Invalid flag: '" + std::string(1, c) + "'");
+
+ tokens.GetToken(res.gline_time);
+ tokens.GetToken(res.reason);
+
+ /* Hax to allow spaces in the freeform without changing the design of the irc protocol */
+ for (std::string::iterator n = res.freeform.begin(); n != res.freeform.end(); n++)
+ if (*n == '\7')
+ *n = ' ';
+
+ return res;
+}
+
+void ModuleFilter::OnSyncNetwork(Module* proto, void* opaque)
+{
+ for (std::vector<ImplFilter>::iterator i = filters.begin(); i != filters.end(); ++i)
+ {
+ proto->ProtoSendMetaData(opaque, NULL, "filter", EncodeFilter(&(*i)));
+ }
+}
+
+void ModuleFilter::OnDecodeMetaData(Extensible* target, const std::string &extname, const std::string &extdata)
+{
+ if ((target == NULL) && (extname == "filter"))
+ {
+ try
+ {
+ FilterResult data = DecodeFilter(extdata);
+ this->AddFilter(data.freeform, data.action, data.reason, data.gline_time, data.GetFlags());
+ }
+ catch (ModuleException& e)
+ {
+ ServerInstance->Logs->Log("m_filter", LOG_DEBUG, "Error when unserializing filter: " + std::string(e.GetReason()));
+ }
}
+}
+
+ImplFilter::ImplFilter(ModuleFilter* mymodule, const std::string &rea, FilterAction act, long glinetime, const std::string &pat, const std::string &flgs)
+ : FilterResult(pat, rea, act, glinetime, flgs)
+{
+ if (!mymodule->RegexEngine)
+ throw ModuleException("Regex module implementing '"+mymodule->RegexEngine.GetProvider()+"' is not loaded!");
+ regex = mymodule->RegexEngine->Create(pat);
+}
- virtual void SyncFilters(Module* proto, void* opaque)
+FilterResult* ModuleFilter::FilterMatch(User* user, const std::string &text, int flgs)
+{
+ static std::string stripped_text;
+ stripped_text.clear();
+
+ for (std::vector<ImplFilter>::iterator index = filters.begin(); index != filters.end(); index++)
{
- for (filter_t::iterator n = filters.begin(); n != filters.end(); n++)
+ FilterResult* filter = dynamic_cast<FilterResult*>(&(*index));
+
+ /* Skip ones that dont apply to us */
+ if (!AppliesToMe(user, filter, flgs))
+ continue;
+
+ if ((filter->flag_strip_color) && (stripped_text.empty()))
+ {
+ stripped_text = text;
+ InspIRCd::StripColor(stripped_text);
+ }
+
+ //ServerInstance->Logs->Log("m_filter", LOG_DEBUG, "Match '%s' against '%s'", text.c_str(), index->freeform.c_str());
+ if (index->regex->Matches(filter->flag_strip_color ? stripped_text : text))
{
- this->SendFilter(proto, opaque, n->second);
+ //ServerInstance->Logs->Log("m_filter", LOG_DEBUG, "MATCH");
+ return &*index;
}
+ //ServerInstance->Logs->Log("m_filter", LOG_DEBUG, "NO MATCH");
}
+ return NULL;
+}
- virtual void OnRehash(userrec* user, const std::string ¶meter)
+bool ModuleFilter::DeleteFilter(const std::string &freeform)
+{
+ for (std::vector<ImplFilter>::iterator i = filters.begin(); i != filters.end(); i++)
{
- ConfigReader* MyConf = new ConfigReader(ServerInstance);
+ if (i->freeform == freeform)
+ {
+ delete i->regex;
+ filters.erase(i);
+ return true;
+ }
+ }
+ return false;
+}
- for (int index = 0; index < MyConf->Enumerate("keyword"); index++)
+std::pair<bool, std::string> ModuleFilter::AddFilter(const std::string &freeform, FilterAction type, const std::string &reason, long duration, const std::string &flgs)
+{
+ for (std::vector<ImplFilter>::iterator i = filters.begin(); i != filters.end(); i++)
+ {
+ if (i->freeform == freeform)
{
- this->DeleteFilter(MyConf->ReadValue("keyword","pattern",index));
+ return std::make_pair(false, "Filter already exists");
+ }
+ }
+
+ try
+ {
+ filters.push_back(ImplFilter(this, reason, type, duration, freeform, flgs));
+ }
+ catch (ModuleException &e)
+ {
+ ServerInstance->Logs->Log("m_filter", LOG_DEFAULT, "Error in regular expression '%s': %s", freeform.c_str(), e.GetReason());
+ return std::make_pair(false, e.GetReason());
+ }
+ return std::make_pair(true, "");
+}
+
+bool ModuleFilter::StringToFilterAction(const std::string& str, FilterAction& fa)
+{
+ irc::string s(str.c_str());
- std::string pattern = MyConf->ReadValue("keyword","pattern",index);
- std::string reason = MyConf->ReadValue("keyword","reason",index);
- std::string do_action = MyConf->ReadValue("keyword","action",index);
- std::string flags = MyConf->ReadValue("keyword","flags",index);
- long gline_time = ServerInstance->Duration(MyConf->ReadValue("keyword","duration",index));
- if (do_action.empty())
- do_action = "none";
- if (flags.empty())
- flags = "*";
- FilterResult* x = new FilterResult(pattern, reason, do_action, gline_time, flags);
- filters[pattern] = x;
+ if (s == "gline")
+ fa = FA_GLINE;
+ else if (s == "block")
+ fa = FA_BLOCK;
+ else if (s == "silent")
+ fa = FA_SILENT;
+ else if (s == "kill")
+ fa = FA_KILL;
+ else if (s == "none")
+ fa = FA_NONE;
+ else
+ return false;
+
+ return true;
+}
+
+std::string ModuleFilter::FilterActionToString(FilterAction fa)
+{
+ switch (fa)
+ {
+ case FA_GLINE: return "gline";
+ case FA_BLOCK: return "block";
+ case FA_SILENT: return "silent";
+ case FA_KILL: return "kill";
+ default: return "none";
+ }
+}
+
+void ModuleFilter::ReadFilters()
+{
+ ConfigTagList tags = ServerInstance->Config->ConfTags("keyword");
+ for (ConfigIter i = tags.first; i != tags.second; ++i)
+ {
+ std::string pattern = i->second->getString("pattern");
+ this->DeleteFilter(pattern);
+
+ std::string reason = i->second->getString("reason");
+ std::string action = i->second->getString("action");
+ std::string flgs = i->second->getString("flags");
+ unsigned long gline_time = InspIRCd::Duration(i->second->getString("duration"));
+ if (flgs.empty())
+ flgs = "*";
+
+ FilterAction fa;
+ if (!StringToFilterAction(action, fa))
+ fa = FA_NONE;
+
+ try
+ {
+ filters.push_back(ImplFilter(this, reason, fa, gline_time, pattern, flgs));
+ ServerInstance->Logs->Log("m_filter", LOG_DEFAULT, "Regular expression %s loaded.", pattern.c_str());
+ }
+ catch (ModuleException &e)
+ {
+ ServerInstance->Logs->Log("m_filter", LOG_DEFAULT, "Error in regular expression '%s': %s", pattern.c_str(), e.GetReason());
}
- DELETE(MyConf);
}
+}
- virtual int OnStats(char symbol, userrec* user, string_list &results)
+ModResult ModuleFilter::OnStats(char symbol, User* user, string_list &results)
+{
+ if (symbol == 's')
{
- if (symbol == 's')
+ for (std::vector<ImplFilter>::iterator i = filters.begin(); i != filters.end(); i++)
{
- std::string sn = ServerInstance->Config->ServerName;
- for (filter_t::iterator n = filters.begin(); n != filters.end(); n++)
- {
- results.push_back(sn+" 223 "+user->nick+" :GLOB:"+n->second->freeform+" "+n->second->action+" "+ConvToStr(n->second->gline_time)+" :"+n->second->reason);
- }
+ results.push_back(ServerInstance->Config->ServerName+" 223 "+user->nick+" :"+RegexEngine.GetProvider()+":"+i->freeform+" "+i->GetFlags()+" "+FilterActionToString(i->action)+" "+ConvToStr(i->gline_time)+" :"+i->reason);
+ }
+ for (std::set<std::string>::iterator i = exemptfromfilter.begin(); i != exemptfromfilter.end(); ++i)
+ {
+ results.push_back(ServerInstance->Config->ServerName+" 223 "+user->nick+" :EXEMPT "+(*i));
}
- return 0;
}
-};
+ return MOD_RES_PASSTHRU;
+}
+void ModuleFilter::OnUnloadModule(Module* mod)
+{
+ // If the regex engine became unavailable or has changed, remove all filters
+ if (!RegexEngine)
+ {
+ FreeFilters();
+ }
+ else if (RegexEngine.operator->() != factory)
+ {
+ factory = RegexEngine.operator->();
+ FreeFilters();
+ }
+}
-MODULE_INIT(ModuleFilter);
+MODULE_INIT(ModuleFilter)
projects / user / henk / code / inspircd.git / blobdiff