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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2006-2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2005-2007 Craig Edwards <craigedwards@brainbox.cc>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2006 Craig McLure <craig@chatspike.net>
*
* 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/>.
*/
/* $Core */
#include "inspircd.h"
#include "xline.h"
#include "socketengine.h"
#include "command_parse.h"
void FloodQuitUserHandler::Call(User* current)
{
Server->Logs->Log("USERS",DEFAULT,"Excess flood from: %s@%s", current->ident.c_str(), current->host.c_str());
Server->SNO->WriteToSnoMask('f',"Excess flood from: %s%s%s@%s",
current->registered == REG_ALL ? current->nick.c_str() : "",
current->registered == REG_ALL ? "!" : "", current->ident.c_str(), current->host.c_str());
Server->Users->QuitUser(current, "Excess flood");
if (current->registered != REG_ALL)
{
ZLine* zl = new ZLine(Server, Server->Time(), 0, Server->Config->ServerName, "Flood from unregistered connection", current->GetIPString());
if (Server->XLines->AddLine(zl,NULL))
Server->XLines->ApplyLines();
else
delete zl;
}
}
void ProcessUserHandler::Call(User* cu)
{
int result = EAGAIN;
if (cu->GetFd() == FD_MAGIC_NUMBER)
return;
char* ReadBuffer = Server->GetReadBuffer();
if (cu->GetIOHook())
{
int result2 = 0;
int MOD_RESULT = 0;
try
{
MOD_RESULT = cu->GetIOHook()->OnRawSocketRead(cu->GetFd(), ReadBuffer, Server->Config->NetBufferSize, result2);
}
catch (CoreException& modexcept)
{
Server->Logs->Log("USERS",DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
}
if (MOD_RESULT < 0)
{
result = -EAGAIN;
}
else
{
result = result2;
}
}
else
{
result = cu->ReadData(ReadBuffer, Server->Config->NetBufferSize);
}
if ((result) && (result != -EAGAIN))
{
User *current;
Server->stats->statsRecv += result;
/*
* perform a check on the raw buffer as an array (not a string!) to remove
* character 0 which is illegal in the RFC - replace them with spaces.
*/
for (int checker = 0; checker < result; checker++)
{
if (ReadBuffer[checker] == 0)
ReadBuffer[checker] = ' ';
}
if (result > 0)
ReadBuffer[result] = '\0';
current = cu;
// add the data to the users buffer
if (result > 0)
{
if (!current->AddBuffer(ReadBuffer))
{
// AddBuffer returned false, theres too much data in the user's buffer and theyre up to no good.
Server->FloodQuitUser(current);
return;
}
/* If user is over penalty, dont process here, just build up */
if (current->Penalty < 10)
Server->Parser->DoLines(current);
return;
}
if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
{
Server->Users->QuitUser(cu, errno ? strerror(errno) : "EOF from client");
return;
}
}
// result EAGAIN means nothing read
else if ((result == EAGAIN) || (result == -EAGAIN))
{
/* do nothing */
}
else if (result == 0)
{
Server->Users->QuitUser(cu, "Connection closed");
return;
}
}
/**
* This function is called once a second from the mainloop.
* It is intended to do background checking on all the user structs, e.g.
* stuff like ping checks, registration timeouts, etc.
*/
void InspIRCd::DoBackgroundUserStuff()
{
/*
* loop over all local users..
*/
for (std::vector<User*>::iterator count2 = this->Users->local_users.begin(); count2 != this->Users->local_users.end(); count2++)
{
User *curr = *count2;
if (curr->quitting)
continue;
if (curr->Penalty)
{
curr->Penalty--;
if (curr->Penalty < 10)
Parser->DoLines(curr, true);
}
switch (curr->registered)
{
case REG_ALL:
if (TIME > curr->nping)
{
// This user didn't answer the last ping, remove them
if (!curr->lastping)
{
time_t time = this->Time() - (curr->nping - curr->MyClass->GetPingTime());
char message[MAXBUF];
snprintf(message, MAXBUF, "Ping timeout: %ld second%s", (long)time, time > 1 ? "s" : "");
curr->lastping = 1;
curr->nping = TIME + curr->MyClass->GetPingTime();
this->Users->QuitUser(curr, message);
continue;
}
curr->Write("PING :%s",this->Config->ServerName);
curr->lastping = 0;
curr->nping = TIME +curr->MyClass->GetPingTime();
}
break;
case REG_NICKUSER:
if (AllModulesReportReady(curr) && curr->dns_done)
{
/* User has sent NICK/USER, modules are okay, DNS finished. */
curr->FullConnect();
continue;
}
break;
}
if (curr->registered != REG_ALL && (TIME > (curr->age + curr->MyClass->GetRegTimeout())))
{
/*
* registration timeout -- didnt send USER/NICK/HOST
* in the time specified in their connection class.
*/
this->Users->QuitUser(curr, "Registration timeout");
continue;
}
}
}
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