/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2009 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.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(User* 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->Users->clientlist->begin(); i != ServerInstance->Users->clientlist->end(); i++)
if (i->second->Visibility == qo)
i->second->Visibility = NULL;
delete qo;
}
ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding, bool)
{
if (dest->IsModeSet('Q') != adding)
{
dest->SetMode('Q', adding);
/* Fix for bug #379 reported by stealth. On +/-Q make m_watch think the user has signed on/off */
Module* m = ServerInstance->Modules->Find("m_watch.so");
/* This must come before setting/unsetting the handler */
if (m && adding)
m->OnUserQuit(dest, "Connection closed", "Connection closed");
/* Set visibility handler object */
dest->Visibility = adding ? qo : NULL;
/* This has to come after setting/unsetting the handler */
if (m && !adding)
m->OnPostConnect(dest);
/* 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().c_str(), adding ? "PART" : "JOIN", f->first->name.c_str());
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.c_str(), n.c_str());
}
}
}
ServerInstance->SNO->WriteToSnoMask('a', "\2NOTICE\2: Oper %s has become %svisible (%cQ)", dest->GetFullHost().c_str(), adding ? "in" : "", adding ? '+' : '-');
return MODEACTION_ALLOW;
}
else
{
return MODEACTION_DENY;
}
}
};
class InvisibleDeOper : public ModeWatcher
{
public:
InvisibleDeOper(InspIRCd* Instance) : ModeWatcher(Instance, 'o', MODETYPE_USER)
{
}
bool BeforeMode(User* source, User* dest, Channel* channel, std::string ¶m, bool adding, ModeType type, bool)
{
/* Users who are opers and have +Q get their +Q removed when they deoper */
if ((!adding) && (dest->IsModeSet('Q')))
{
std::vector<std::string> newmodes;
newmodes.push_back(dest->nick);
newmodes.push_back("-Q");
ServerInstance->Modes->Process(newmodes, 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->Modes->AddMode(qm))
throw ModuleException("Could not add new modes!");
ido = new InvisibleDeOper(ServerInstance);
if (!ServerInstance->Modes->AddModeWatcher(ido))
throw ModuleException("Could not add new mode watcher on usermode +o!");
/* Yeah i know people can take this out. I'm not about to obfuscate code just to be a pain in the ass. */
ServerInstance->Users->ServerNoticeAll("*** m_invisible.so has just been loaded on this network. For more information, please visit http://inspircd.org/wiki/Modules/invisible");
Implementation eventlist[] = { I_OnUserPreMessage, I_OnUserPreNotice, I_OnUserJoin, I_OnUserPart, I_OnUserQuit, I_OnRehash, I_OnHostCycle };
ServerInstance->Modules->Attach(eventlist, this, 7);
};
virtual ~ModuleInvisible()
{
ServerInstance->Modes->DelMode(qm);
ServerInstance->Modes->DelModeWatcher(ido);
delete qm;
delete ido;
delete conf;
};
virtual Version GetVersion();
virtual void OnUserJoin(User* user, Channel* channel, bool sync, bool &silent);
virtual void OnRehash(User* user);
void OnUserPart(User* user, Channel* channel, std::string &partmessage, bool &silent);
void OnUserQuit(User* user, const std::string &reason, const std::string &oper_message);
bool OnHostCycle(User* user);
/* No privmsg response when hiding - submitted by Eric at neowin */
virtual int OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
virtual int OnUserPreMessage(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list);
/* Fix by Eric @ neowin.net, thanks :) -- Brain */
void WriteCommonFrom(User *user, Channel* channel, const char* text, ...) CUSTOM_PRINTF(4, 5);
};
Version ModuleInvisible::GetVersion()
{
return Version("$Id$", VF_COMMON | VF_VENDOR, API_VERSION);
}
void ModuleInvisible::OnUserJoin(User* user, Channel* channel, bool sync, 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.c_str());
ServerInstance->SNO->WriteToSnoMask('a', "\2NOTICE\2: Oper %s has joined %s invisibly (+Q)", user->GetFullHost().c_str(), channel->name.c_str());
}
}
void ModuleInvisible::OnRehash(User* user)
{
delete conf;
conf = new ConfigReader(ServerInstance);
}
void ModuleInvisible::OnUserPart(User* user, Channel* channel, 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.c_str(),
partmessage.empty() ? "" : " :",
partmessage.empty() ? "" : partmessage.c_str());
}
}
void ModuleInvisible::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
{
if (user->IsModeSet('Q'))
{
Command* parthandler = ServerInstance->Parser->GetHandler("PART");
std::vector<std::string> to_leave;
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++)
{
std::vector<std::string> parameters;
parameters.push_back(*n);
/* This triggers our OnUserPart, above, making the PART silent */
parthandler->Handle(parameters, user);
}
}
}
}
bool ModuleInvisible::OnHostCycle(User* user)
{
return user->IsModeSet('Q');
}
/* No privmsg response when hiding - submitted by Eric at neowin */
int ModuleInvisible::OnUserPreNotice(User* user,void* dest,int target_type, std::string &text, char status, CUList &exempt_list)
{
if ((target_type == TYPE_USER) && (IS_LOCAL(user)))
{
User* target = (User*)dest;
if(target->IsModeSet('Q') && !IS_OPER(user))
{
user->WriteNumeric(401, "%s %s :No such nick/channel",user->nick.c_str(), target->nick.c_str());
return 1;
}
}
return 0;
}
int ModuleInvisible::OnUserPreMessage(User* 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 ModuleInvisible::WriteCommonFrom(User *user, Channel* 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().c_str(), 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)
