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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 "wildcard.h"
#include "xline.h"
#include "socketengine.h"
#include "command_parse.h"
void FloodQuitUserHandler::Call(User* current)
{
Server->Log(DEFAULT,"Excess flood from: %s@%s", current->ident, current->host);
Server->SNO->WriteToSnoMask('f',"Excess flood from: %s%s%s@%s",
current->registered == REG_ALL ? current->nick : "",
current->registered == REG_ALL ? "!" : "", current->ident, current->host);
User::QuitUser(Server, current, "Excess flood");
if (current->registered != REG_ALL)
{
Server->XLines->add_zline(120, Server->Config->ServerName, "Flood from unregistered connection", current->GetIPString());
Server->XLines->apply_lines(APPLY_ZLINES);
}
}
void ProcessUserHandler::Call(User* cu)
{
int result = EAGAIN;
if (cu->GetFd() == FD_MAGIC_NUMBER)
return;
char* ReadBuffer = Server->GetReadBuffer();
if (Server->Config->GetIOHook(cu->GetPort()))
{
int result2 = 0;
int MOD_RESULT = 0;
try
{
MOD_RESULT = Server->Config->GetIOHook(cu->GetPort())->OnRawSocketRead(cu->GetFd(),ReadBuffer,Server->Config->NetBufferSize,result2);
Server->Log(DEBUG,"MOD_RESULT=%d, result2=%d",MOD_RESULT,result2);
}
catch (CoreException& modexcept)
{
Server->Log(DEBUG, "%s threw an exception: %s", modexcept.GetSource(), modexcept.GetReason());
}
if (MOD_RESULT < 0)
{
result = -EAGAIN;
}
else
{
result = result2;
}
}
else
{
result = cu->ReadData(ReadBuffer, sizeof(ReadBuffer));
}
if ((result) && (result != -EAGAIN))
{
User *current;
int currfd;
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;
currfd = current->GetFd();
// 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.
if (current->registered == REG_ALL)
{
// Make sure they arn't flooding long lines.
if (Server->Time() > current->reset_due)
{
current->reset_due = Server->Time() + current->threshold;
current->lines_in = 0;
}
current->lines_in++;
if (current->flood && current->lines_in > current->flood)
Server->FloodQuitUser(current);
else
{
current->WriteServ("NOTICE %s :Your previous line was too long and was not delivered (Over %d chars) Please shorten it.", current->nick, MAXBUF-2);
current->recvq.clear();
}
}
else
Server->FloodQuitUser(current);
return;
}
/* If user is over penalty, dont process here, just build up */
if (!current->OverPenalty)
Server->Parser->DoLines(current);
return;
}
if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
{
User::QuitUser(Server, 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)
{
User::QuitUser(Server, 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 = local_users.begin(); count2 != local_users.end(); count2++)
{
User *curr = *count2;
if (curr->Penalty)
{
curr->Penalty--;
if (curr->Penalty < 10)
Parser->DoLines(curr, true);
}
if (curr->OverPenalty)
{
if (curr->sendq.empty())
curr->OverPenalty = false;
}
if ((curr->registered != REG_ALL) && (TIME > curr->timeout))
{
/*
* registration timeout -- didnt send USER/NICK/HOST
* in the time specified in their connection class.
*/
curr->muted = true;
User::QuitUser(this, curr, "Registration timeout");
continue;
}
/*
* `ready` means that the user has provided NICK/USER(/PASS), and all modules agree
* that the user is okay to proceed. The one thing we are then waiting for is DNS, which we do here...
*/
bool ready = ((curr->registered == REG_NICKUSER) && AllModulesReportReady(curr));
if (ready)
{
if (!curr->dns_done)
{
/*
* DNS isn't done yet?
* Cool. Check for timeout.
*/
if (TIME > curr->signon)
{
/* FZZZZZZZZT, timeout! */
curr->WriteServ("NOTICE Auth :*** Could not resolve your hostname: Request timed out; using your IP address (%s) instead.", curr->GetIPString());
curr->dns_done = true;
this->stats->statsDnsBad++;
curr->FullConnect();
continue;
}
}
else
{
/* DNS passed, connect the user */
curr->FullConnect();
continue;
}
}
// It's time to PING this user. Send them a ping.
if ((TIME > curr->nping) && (curr->registered == REG_ALL))
{
// This user didn't answer the last ping, remove them
if (!curr->lastping)
{
time_t time = this->Time(false) - (curr->nping - curr->pingmax);
char message[MAXBUF];
snprintf(message, MAXBUF, "Ping timeout: %ld second%s", (long)time, time > 1 ? "s" : "");
curr->muted = true;
curr->lastping = 1;
curr->nping = TIME+curr->pingmax;
User::QuitUser(this, curr, message);
continue;
}
curr->Write("PING :%s",this->Config->ServerName);
curr->lastping = 0;
curr->nping = TIME+curr->pingmax;
}
}
}
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