+++ /dev/null
-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
- *
- * 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.
- *
- * ---------------------------------------------------
- */
-
-#include "xline.h"
-
-enum FilterFlags
-{
- FLAG_PART = 2,
- FLAG_QUIT = 4,
- FLAG_PRIVMSG = 8,
- FLAG_NOTICE = 16
-};
-
-class FilterResult : public classbase
-{
- public:
- std::string freeform;
- std::string reason;
- std::string action;
- long gline_time;
- std::string flags;
-
- bool flag_no_opers;
- bool flag_part_message;
- bool flag_quit_message;
- bool flag_privmsg;
- bool flag_notice;
-
- FilterResult(const std::string free, const std::string &rea, const std::string &act, long gt, const std::string &fla) :
- freeform(free), reason(rea), action(act), gline_time(gt), flags(fla)
- {
- this->FillFlags(fla);
- }
-
- int FillFlags(const std::string &fl)
- {
- flags = fl;
- flag_no_opers = flag_part_message = flag_quit_message = flag_privmsg = flag_notice = false;
- size_t x = 0;
-
- for (std::string::const_iterator n = flags.begin(); n != flags.end(); ++n, ++x)
- {
- 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 '*':
- flag_no_opers = flag_part_message = flag_quit_message =
- flag_privmsg = flag_notice = true;
- break;
- default:
- return x;
- break;
- }
- }
- return 0;
- }
-
- FilterResult()
- {
- }
-
- virtual ~FilterResult()
- {
- }
-};
-
-class CommandFilter;
-
-class FilterBase : public Module
-{
- CommandFilter* filtcommand;
- int flags;
-protected:
- std::vector<std::string> exemptfromfilter; // List of channel names excluded from filtering.
- public:
- FilterBase(InspIRCd* Me, const std::string &source);
- virtual ~FilterBase();
- virtual int OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
- virtual FilterResult* FilterMatch(User* user, const std::string &text, int flags) = 0;
- virtual bool DeleteFilter(const std::string &freeform) = 0;
- virtual void SyncFilters(Module* proto, void* opaque) = 0;
- virtual void SendFilter(Module* proto, void* opaque, FilterResult* iter);
- 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) = 0;
- virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
- virtual void OnRehash(User* user, const std::string ¶meter);
- virtual Version GetVersion();
- std::string EncodeFilter(FilterResult* filter);
- FilterResult DecodeFilter(const std::string &data);
- virtual void OnSyncOtherMetaData(Module* proto, void* opaque, bool displayable = false);
- virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata);
- virtual int OnStats(char symbol, User* user, string_list &results) = 0;
- virtual int OnPreCommand(std::string &command, std::vector<std::string> ¶meters, User *user, bool validated, const std::string &original_line);
- bool AppliesToMe(User* user, FilterResult* filter, int flags);
-};
-
-class CommandFilter : public Command
-{
- FilterBase* Base;
- public:
- CommandFilter(FilterBase* f, InspIRCd* Me, const std::string &ssource) : Command(Me, "FILTER", "o", 1), Base(f)
- {
- this->source = ssource;
- this->syntax = "<filter-definition> <type> <flags> [<gline-duration>] :<reason>";
- }
-
- CmdResult Handle(const std::vector<std::string> ¶meters, User *user)
- {
- if (parameters.size() == 1)
- {
- /* Deleting a filter */
- if (Base->DeleteFilter(parameters[0]))
- {
- user->WriteServ("NOTICE %s :*** Deleted filter '%s'", user->nick.c_str(), parameters[0].c_str());
- return CMD_SUCCESS;
- }
- else
- {
- user->WriteServ("NOTICE %s :*** Filter '%s' not found on list.", user->nick.c_str(), parameters[0].c_str());
- return CMD_FAILURE;
- }
- }
- else
- {
- /* Adding a filter */
- if (parameters.size() >= 4)
- {
- std::string freeform = parameters[0];
- std::string type = parameters[1];
- std::string flags = parameters[2];
- std::string reason;
- long duration = 0;
-
-
- if ((type != "gline") && (type != "none") && (type != "block") && (type != "kill") && (type != "silent"))
- {
- user->WriteServ("NOTICE %s :*** Invalid filter type '%s'. Supported types are 'gline', 'none', 'block', 'silent' and 'kill'.", user->nick.c_str(), freeform.c_str());
- return CMD_FAILURE;
- }
-
- if (type == "gline")
- {
- if (parameters.size() >= 5)
- {
- duration = ServerInstance->Duration(parameters[3]);
- reason = parameters[4];
- }
- else
- {
- this->TooFewParams(user, " When setting a gline type filter, a gline duration must be specified as the third parameter.");
- return CMD_FAILURE;
- }
- }
- else
- {
- reason = parameters[3];
- }
- std::pair<bool, std::string> result = Base->AddFilter(freeform, type, reason, 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(),
- type.c_str(), (duration ? " duration: " : ""), (duration ? parameters[3].c_str() : ""),
- flags.c_str(), reason.c_str());
- 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
- {
- this->TooFewParams(user, ".");
- return CMD_FAILURE;
- }
-
- }
- }
-
- void TooFewParams(User* user, const std::string &extra_text)
- {
- user->WriteServ("NOTICE %s :*** Not enough parameters%s", user->nick.c_str(), extra_text.c_str());
- }
-};
-
-bool FilterBase::AppliesToMe(User* user, FilterResult* filter, int iflags)
-{
- if ((filter->flag_no_opers) && IS_OPER(user))
- 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;
-}
-
-FilterBase::FilterBase(InspIRCd* Me, const std::string &source) : Module(Me)
-{
- filtcommand = new CommandFilter(this, Me, source);
- ServerInstance->AddCommand(filtcommand);
- Implementation eventlist[] = { I_OnPreCommand, I_OnStats, I_OnSyncOtherMetaData, I_OnDecodeMetaData, I_OnUserPreMessage, I_OnUserPreNotice, I_OnRehash };
- ServerInstance->Modules->Attach(eventlist, this, 7);
-}
-
-FilterBase::~FilterBase()
-{
-}
-
-int FilterBase::OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
-{
- flags = FLAG_PRIVMSG;
- return OnUserPreNotice(user,dest,target_type,text,status,exempt_list);
-}
-
-int FilterBase::OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
-{
- if (!flags)
- flags = FLAG_NOTICE;
-
- /* Leave ulines alone */
- if ((ServerInstance->ULine(user->server)) || (!IS_LOCAL(user)))
- return 0;
-
- FilterResult* f = this->FilterMatch(user, text, flags);
- if (f)
- {
- std::string target = "";
- if (target_type == TYPE_USER)
- {
- User* t = (User*)dest;
- target = std::string(t->nick);
- }
- else if (target_type == TYPE_CHANNEL)
- {
- Channel* t = (Channel*)dest;
- target = std::string(t->name);
- std::vector<std::string>::iterator i = find(exemptfromfilter.begin(), exemptfromfilter.end(), target);
- if (i != exemptfromfilter.end()) return 0;
- }
- if (f->action == "block")
- {
- ServerInstance->SNO->WriteToSnoMask('A', std::string("FILTER: ")+user->nick+" had their message filtered, target was "+target+": "+f->reason);
- user->WriteServ("NOTICE "+std::string(user->nick)+" :Your message has been filtered and opers notified: "+f->reason);
- }
- if (f->action == "silent")
- {
- user->WriteServ("NOTICE "+std::string(user->nick)+" :Your message has been filtered: "+f->reason);
- }
- if (f->action == "kill")
- {
- ServerInstance->Users->QuitUser(user, "Filtered: " + f->reason);
- }
- if (f->action == "gline")
- {
- GLine* gl = new GLine(ServerInstance, ServerInstance->Time(), f->gline_time, ServerInstance->Config->ServerName, f->reason.c_str(), "*", user->GetIPString());
- if (ServerInstance->XLines->AddLine(gl,NULL))
- {
- ServerInstance->XLines->ApplyLines();
- }
- else
- delete gl;
- }
-
- ServerInstance->Logs->Log("FILTER",DEFAULT,"FILTER: "+ user->nick + " had their message filtered, target was " + target + ": " + f->reason + " Action: " + f->action);
- return 1;
- }
- return 0;
-}
-
-int FilterBase::OnPreCommand(std::string &command, std::vector<std::string> ¶meters, User *user, bool validated, const std::string &original_line)
-{
- flags = 0;
- if (validated && IS_LOCAL(user))
- {
- std::string checkline;
- int replacepoint = 0;
- bool parting = false;
-
- if (command == "QUIT")
- {
- /* QUIT with no reason: nothing to do */
- if (parameters.size() < 1)
- return 0;
-
- checkline = parameters[0];
- replacepoint = 0;
- parting = false;
- flags = FLAG_QUIT;
- }
- else if (command == "PART")
- {
- /* PART with no reason: nothing to do */
- if (parameters.size() < 2)
- return 0;
-
- std::vector<std::string>::iterator i = find(exemptfromfilter.begin(), exemptfromfilter.end(), parameters[0]);
- if (i != exemptfromfilter.end()) return 0;
- checkline = parameters[1];
- replacepoint = 1;
- parting = true;
- flags = FLAG_PART;
- }
- else
- /* We're only messing with PART and QUIT */
- return 0;
-
- FilterResult* f = NULL;
-
- if (flags)
- f = this->FilterMatch(user, checkline, flags);
-
- if (!f)
- /* PART or QUIT reason doesnt match a filter */
- return 0;
-
- /* We cant block a part or quit, so instead we change the reason to 'Reason filtered' */
- Command* c = ServerInstance->Parser->GetHandler(command);
- if (c)
- {
- std::vector<std::string> params;
- for (int item = 0; item < (int)parameters.size(); item++)
- params.push_back(parameters[item]);
- params[replacepoint] = "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 == "block") || (((!parting) && (f->action == "kill"))) || (f->action == "silent"))
- {
- c->Handle(params, user);
- return 1;
- }
- else
- {
- /* Are they parting, if so, kill is applicable */
- if ((parting) && (f->action == "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 == "gline")
- {
- /* Note: We gline *@IP so that if their host doesnt resolve the gline still applies. */
- GLine* gl = new GLine(ServerInstance, ServerInstance->Time(), f->gline_time, ServerInstance->Config->ServerName, f->reason.c_str(), "*", user->GetIPString());
- if (ServerInstance->XLines->AddLine(gl,NULL))
- {
- ServerInstance->XLines->ApplyLines();
- }
- else
- delete gl;
- }
- return 1;
- }
- }
- return 0;
- }
- return 0;
-}
-
-void FilterBase::OnRehash(User* user, const std::string ¶meter)
-{
- ConfigReader* MyConf = new ConfigReader(ServerInstance);
- std::vector<std::string>().swap(exemptfromfilter);
- for (int index = 0; index < MyConf->Enumerate("exemptfromfilter"); ++index)
- {
- std::string chan = MyConf->ReadValue("exemptfromfilter", "channel", index);
- if (!chan.empty()) {
- exemptfromfilter.push_back(chan);
- }
- }
- delete MyConf;
-}
-
-Version FilterBase::GetVersion()
-{
- return Version("$Id$", VF_VENDOR | VF_COMMON, API_VERSION);
-}
-
-
-std::string FilterBase::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 << " " << filter->action << " " << (filter->flags.empty() ? "-" : filter->flags) << " " << filter->gline_time << " :" << filter->reason;
- return stream.str();
-}
-
-FilterResult FilterBase::DecodeFilter(const std::string &data)
-{
- FilterResult res;
- irc::tokenstream tokens(data);
- tokens.GetToken(res.freeform);
- tokens.GetToken(res.action);
- tokens.GetToken(res.flags);
- if (res.flags == "-")
- res.flags = "";
- res.FillFlags(res.flags);
- 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 FilterBase::OnSyncOtherMetaData(Module* proto, void* opaque, bool displayable)
-{
- this->SyncFilters(proto, opaque);
-}
-
-void FilterBase::SendFilter(Module* proto, void* opaque, FilterResult* iter)
-{
- proto->ProtoSendMetaData(opaque, TYPE_OTHER, NULL, "filter", EncodeFilter(iter));
-}
-
-void FilterBase::OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata)
-{
- if ((target_type == TYPE_OTHER) && (extname == "filter"))
- {
- FilterResult data = DecodeFilter(extdata);
- this->AddFilter(data.freeform, data.action, data.reason, data.gline_time, data.flags);
- }
-}
-
projects / user / henk / code / inspircd.git / commitdiff