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/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2007 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 "inspircd.h"
#include "users.h"
#include "channels.h"
#include "modules.h"
#include <stdarg.h>
/* $ModDesc: Allows for opered clients to join channels without being seen, similar to unreal 3.1 +I mode */
static ConfigReader* conf;
class QuietOper : public VisData
{
public:
QuietOper()
{
}
virtual ~QuietOper()
{
}
virtual bool VisibleTo(userrec* user)
{
return IS_OPER(user);
}
};
class InvisibleMode : public ModeHandler
{
QuietOper* qo;
public:
InvisibleMode(InspIRCd* Instance) : ModeHandler(Instance, 'Q', 0, 0, false, MODETYPE_USER, true)
{
qo = new QuietOper();
}
~InvisibleMode()
{
for (user_hash::iterator i = ServerInstance->clientlist->begin(); i != ServerInstance->clientlist->end(); i++)
if (i->second->Visibility == qo)
i->second->Visibility = NULL;
delete qo;
}
ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding)
{
if (source != dest)
return MODEACTION_DENY;
if (dest->IsModeSet('Q') != adding)
{
bool ok = false;
for (int j = 0; j < conf->Enumerate("type"); j++)
{
std::string opertype = conf->ReadValue("type","name",j);
if (opertype == source->oper)
{
ok = conf->ReadFlag("type", "canquiet", j);
break;
}
}
if (!ok)
{
source->WriteServ("481 %s :Permission Denied - You do not have access to become invisible via user mode +Q", source->nick);
return MODEACTION_DENY;
}
dest->SetMode('Q', adding);
/* Set visibility handler object */
dest->Visibility = adding ? qo : NULL;
/* User appears to vanish or appear from nowhere */
for (UCListIter f = dest->chans.begin(); f != dest->chans.end(); f++)
{
CUList *ulist = f->first->GetUsers();
char tb[MAXBUF];
snprintf(tb,MAXBUF,":%s %s %s", dest->GetFullHost(), adding ? "PART" : "JOIN", f->first->name);
std::string out = tb;
std::string n = this->ServerInstance->Modes->ModeString(dest, f->first);
for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
{
/* User only appears to vanish for non-opers */
if (IS_LOCAL(i->first) && !IS_OPER(i->first))
{
i->first->Write(out);
if (!n.empty() && !adding)
i->first->WriteServ("MODE %s +%s", f->first->name, n.c_str());
}
}
ServerInstance->WriteOpers("*** \2NOTICE\2: Oper %s has become %svisible (%sQ)", dest->GetFullHost(), adding ? "in" : "", adding ? "+" : "-");
}
return MODEACTION_ALLOW;
}
else
{
return MODEACTION_DENY;
}
}
};
class InvisibleDeOper : public ModeWatcher
{
private:
InspIRCd* Srv;
public:
InvisibleDeOper(InspIRCd* Instance) : ModeWatcher(Instance, 'o', MODETYPE_USER), Srv(Instance)
{
}
bool BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string ¶m, bool adding, ModeType type)
{
/* Users who are opers and have +Q get their +Q removed when they deoper */
if ((!adding) && (dest->IsModeSet('Q')))
{
const char* newmodes[] = { dest->nick, "-Q" };
ServerInstance->Modes->Process(newmodes, 2, source, true);
}
return true;
}
};
class ModuleInvisible : public Module
{
private:
InvisibleMode* qm;
InvisibleDeOper* ido;
public:
ModuleInvisible(InspIRCd* Me)
: Module(Me)
{
conf = new ConfigReader(ServerInstance);
qm = new InvisibleMode(ServerInstance);
if (!ServerInstance->AddMode(qm, 'Q'))
throw ModuleException("Could not add new modes!");
ido = new InvisibleDeOper(ServerInstance);
if (!ServerInstance->AddModeWatcher(ido))
throw ModuleException("Could not add new mode watcher on usermode +o!");
}
virtual ~ModuleInvisible()
{
ServerInstance->Modes->DelMode(qm);
ServerInstance->Modes->DelModeWatcher(ido);
DELETE(qm);
DELETE(ido);
DELETE(conf);
}
virtual Version GetVersion()
{
return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
}
void Implements(char* List)
{
List[I_OnUserPreMessage] = List[I_OnUserPreNotice] = List[I_OnUserJoin] = List[I_OnUserPart] = List[I_OnUserQuit] = List[I_OnRehash] = 1;
}
virtual void OnUserJoin(userrec* user, chanrec* channel, bool &silent)
{
if (user->IsModeSet('Q'))
{
silent = true;
/* Because we silenced the event, make sure it reaches the user whos joining (but only them of course) */
this->WriteCommonFrom(user, channel, "JOIN %s", channel->name);
ServerInstance->WriteOpers("*** \2NOTICE\2: Oper %s has joined %s invisibly (+Q)", user->GetFullHost(), channel->name);
}
}
virtual void OnRehash(userrec* user, const std::string ¶meter)
{
DELETE(conf);
conf = new ConfigReader(ServerInstance);
}
void OnUserPart(userrec* user, chanrec* channel, const std::string &partmessage, bool &silent)
{
if (user->IsModeSet('Q'))
{
silent = true;
/* Because we silenced the event, make sure it reaches the user whos leaving (but only them of course) */
this->WriteCommonFrom(user, channel, "PART %s%s%s", channel->name,
partmessage.empty() ? "" : " :",
partmessage.empty() ? "" : partmessage.c_str());
}
}
void OnUserQuit(userrec* user, const std::string &reason, const std::string &oper_message)
{
if (user->IsModeSet('Q'))
{
command_t* parthandler = ServerInstance->Parser->GetHandler("PART");
std::vector<std::string> to_leave;
const char* parameters[2];
if (parthandler)
{
for (UCListIter f = user->chans.begin(); f != user->chans.end(); f++)
to_leave.push_back(f->first->name);
/* We cant do this neatly in one loop, as we are modifying the map we are iterating */
for (std::vector<std::string>::iterator n = to_leave.begin(); n != to_leave.end(); n++)
{
parameters[0] = n->c_str();
/* This triggers our OnUserPart, above, making the PART silent */
parthandler->Handle(parameters, 1, user);
}
}
}
}
/* No privmsg response when hiding - submitted by Eric at neowin */
virtual int OnUserPreNotice(userrec* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
{
if ((target_type == TYPE_USER) && (IS_LOCAL(user)))
{
userrec* target = (userrec*)dest;
if(target->IsModeSet('Q') && !*user->oper)
{
user->WriteServ("401 %s %s :No such nick/channel",user->nick, target->nick);
return 1;
}
}
return 0;
}
virtual int 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);
}
/* Fix by Eric @ neowin.net, thanks :) -- Brain */
void WriteCommonFrom(userrec *user, chanrec* channel, const char* text, ...)
{
va_list argsPtr;
char textbuffer[MAXBUF];
char tb[MAXBUF];
va_start(argsPtr, text);
vsnprintf(textbuffer, MAXBUF, text, argsPtr);
va_end(argsPtr);
snprintf(tb,MAXBUF,":%s %s",user->GetFullHost(),textbuffer);
CUList *ulist = channel->GetUsers();
for (CUList::iterator i = ulist->begin(); i != ulist->end(); i++)
{
/* User only appears to vanish for non-opers */
if (IS_LOCAL(i->first) && IS_OPER(i->first))
{
i->first->Write(std::string(tb));
}
}
}
};
MODULE_INIT(ModuleInvisible)
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