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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "xline.h"
class FilterResult : public classbase
{
public:
std::string freeform;
std::string reason;
std::string action;
long gline_time;
FilterResult(const std::string free, const std::string &rea, const std::string &act, long gt) : freeform(free), reason(rea), action(act), gline_time(gt)
{
}
FilterResult()
{
}
virtual ~FilterResult()
{
}
};
class cmd_filter;
class FilterBase : public Module
{
cmd_filter* filtcommand;
public:
FilterBase(InspIRCd* Me, const std::string &source);
virtual ~FilterBase();
virtual void Implements(char* List);
virtual int OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
virtual FilterResult* FilterMatch(const std::string &text) = 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) = 0;
virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
virtual void OnRehash(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);
virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata);
virtual int OnStats(char symbol, userrec* user, string_list &results) = 0;
};
class cmd_filter : public command_t
{
FilterBase* Base;
public:
cmd_filter(FilterBase* f, InspIRCd* Me, const std::string &source) : command_t(Me, "FILTER", 'o', 1), Base(f)
{
this->source = source;
this->syntax = "<filter-definition> <type> [<gline-duration>] :<reason>";
}
CmdResult Handle(const char** parameters, int pcnt, userrec *user)
{
if (pcnt == 1)
{
/* Deleting a filter */
if (Base->DeleteFilter(parameters[0]))
{
user->WriteServ("NOTICE %s :*** Deleted filter '%s'", user->nick, parameters[0]);
return CMD_SUCCESS;
}
else
{
user->WriteServ("NOTICE %s :*** Filter '%s' not found on list.", user->nick, parameters[0]);
return CMD_FAILURE;
}
}
else
{
/* Adding a filter */
if (pcnt >= 3)
{
std::string freeform = parameters[0];
std::string type = parameters[1];
std::string reason;
long duration = 0;
if ((type != "gline") && (type != "none") && (type != "block") && (type != "kill"))
{
user->WriteServ("NOTICE %s :*** Invalid filter type '%s'. Supported types are 'gline', 'none', 'block', and 'kill'.", user->nick, freeform.c_str());
return CMD_FAILURE;
}
if (type == "gline")
{
if (pcnt >= 4)
{
duration = ServerInstance->Duration(parameters[2]);
reason = parameters[3];
}
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[2];
}
std::pair<bool, std::string> result = Base->AddFilter(freeform, type, reason, duration);
if (result.first)
{
user->WriteServ("NOTICE %s :*** Added filter '%s', type '%s'%s%s, reason: '%s'", user->nick, freeform.c_str(),
type.c_str(), (duration ? " duration: " : ""), (duration ? parameters[2] : ""),
reason.c_str());
return CMD_SUCCESS;
}
else
{
user->WriteServ("NOTICE %s :*** Filter '%s' could not be added: %s", user->nick, freeform.c_str(), result.second.c_str());
return CMD_FAILURE;
}
}
else
{
this->TooFewParams(user, ".");
return CMD_FAILURE;
}
}
}
void TooFewParams(userrec* user, const std::string &extra_text)
{
user->WriteServ("NOTICE %s :*** Not enough parameters%s", user->nick, extra_text.c_str());
}
};
FilterBase::FilterBase(InspIRCd* Me, const std::string &source) : Module::Module(Me)
{
filtcommand = new cmd_filter(this, Me, source);
ServerInstance->AddCommand(filtcommand);
}
FilterBase::~FilterBase()
{
}
void FilterBase::Implements(char* List)
{
List[I_OnStats] = List[I_OnSyncOtherMetaData] = List[I_OnDecodeMetaData] = List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnRehash] = 1;
}
int FilterBase::OnUserPreMessage(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
{
return OnUserPreNotice(user,dest,target_type,text,status,exempt_list);
}
int FilterBase::OnUserPreNotice(userrec* 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 0;
FilterResult* f = this->FilterMatch(text);
if (f)
{
std::string target = "";
if (target_type == TYPE_USER)
{
userrec* t = (userrec*)dest;
target = std::string(t->nick);
}
else if (target_type == TYPE_CHANNEL)
{
chanrec* t = (chanrec*)dest;
target = std::string(t->name);
}
if (f->action == "block")
{
ServerInstance->WriteOpers(std::string("FILTER: ")+user->nick+" had their notice filtered, target was "+target+": "+f->reason);
user->WriteServ("NOTICE "+std::string(user->nick)+" :Your notice has been filtered and opers notified: "+f->reason);
}
ServerInstance->Log(DEFAULT,"FILTER: "+std::string(user->nick)+std::string(" had their notice filtered, target was ")+target+": "+f->reason+" Action: "+f->action);
if (f->action == "kill")
{
userrec::QuitUser(ServerInstance,user,"Filtered: "+f->reason);
}
if (f->action == "gline")
{
if (ServerInstance->XLines->add_gline(f->gline_time, ServerInstance->Config->ServerName, f->reason.c_str(), user->MakeHostIP()))
{
ServerInstance->XLines->apply_lines(APPLY_GLINES);
FOREACH_MOD(I_OnAddGLine,OnAddGLine(f->gline_time, NULL, f->reason, user->MakeHostIP()));
}
}
return 1;
}
return 0;
}
void FilterBase::OnRehash(const std::string ¶meter)
{
}
Version FilterBase::GetVersion()
{
return Version(1,1,0,2,VF_VENDOR|VF_COMMON,API_VERSION);
}
std::string FilterBase::EncodeFilter(FilterResult* filter)
{
std::ostringstream stream;
stream << filter->freeform << " " << filter->action << " " << filter->gline_time << " " << filter->reason;
return stream.str();
}
FilterResult FilterBase::DecodeFilter(const std::string &data)
{
FilterResult res;
std::istringstream stream(data);
stream >> res.freeform;
stream >> res.action;
stream >> res.gline_time;
res.reason = stream.str();
return res;
}
void FilterBase::OnSyncOtherMetaData(Module* proto, void* opaque)
{
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);
}
}
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