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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2008 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.
*
* ---------------------------------------------------
*/
/* $Core */
#include "inspircd.h"
#include "socket.h"
#include "socketengine.h"
/* Private static member data must be initialized in this manner */
unsigned int ListenSocketBase::socketcount = 0;
sockaddr* ListenSocketBase::sock_us = NULL;
sockaddr* ListenSocketBase::client = NULL;
sockaddr* ListenSocketBase::raddr = NULL;
ListenSocketBase::ListenSocketBase(InspIRCd* Instance, int port, const std::string &addr) : ServerInstance(Instance), desc("plaintext"), bind_addr(addr), bind_port(port)
{
this->SetFd(irc::sockets::OpenTCPSocket(addr.c_str()));
if (this->GetFd() > -1)
{
if (!Instance->BindSocket(this->fd,port,addr.c_str()))
this->fd = -1;
#ifdef IPV6
if ((!*addr.c_str()) || (strchr(addr.c_str(),':')))
this->family = AF_INET6;
else
#endif
this->family = AF_INET;
Instance->SE->AddFd(this);
}
/* Saves needless allocations */
if (socketcount == 0)
{
/* All instances of ListenSocket share these, so reference count it */
ServerInstance->Logs->Log("SOCKET", DEBUG,"Allocate sockaddr structures");
sock_us = new sockaddr[2];
client = new sockaddr[2];
raddr = new sockaddr[2];
}
socketcount++;
}
ListenSocketBase::~ListenSocketBase()
{
if (this->GetFd() > -1)
{
ServerInstance->SE->DelFd(this);
ServerInstance->Logs->Log("SOCKET", DEBUG,"Shut down listener on fd %d", this->fd);
if (ServerInstance->SE->Shutdown(this, 2) || ServerInstance->SE->Close(this))
ServerInstance->Logs->Log("SOCKET", DEBUG,"Failed to cancel listener: %s", strerror(errno));
this->fd = -1;
}
socketcount--;
if (socketcount == 0)
{
delete[] sock_us;
delete[] client;
delete[] raddr;
}
}
/* Just seperated into another func for tidiness really.. */
void ListenSocketBase::AcceptInternal()
{
ServerInstance->Logs->Log("SOCKET",DEBUG,"HandleEvent for Listensoket");
socklen_t uslen, length; // length of our port number
int incomingSockfd;
#ifdef IPV6
if (this->family == AF_INET6)
{
uslen = sizeof(sockaddr_in6);
length = sizeof(sockaddr_in6);
}
else
#endif
{
uslen = sizeof(sockaddr_in);
length = sizeof(sockaddr_in);
}
incomingSockfd = ServerInstance->SE->Accept(this, (sockaddr*)client, &length);
if (incomingSockfd < 0 ||
ServerInstance->SE->GetSockName(this, sock_us, &uslen) == -1)
{
ServerInstance->SE->Shutdown(incomingSockfd, 2);
ServerInstance->SE->Close(incomingSockfd);
ServerInstance->stats->statsRefused++;
return;
}
/*
* XXX -
* this is done as a safety check to keep the file descriptors within range of fd_ref_table.
* its a pretty big but for the moment valid assumption:
* file descriptors are handed out starting at 0, and are recycled as theyre freed.
* therefore if there is ever an fd over 65535, 65536 clients must be connected to the
* irc server at once (or the irc server otherwise initiating this many connections, files etc)
* which for the time being is a physical impossibility (even the largest networks dont have more
* than about 10,000 users on ONE server!)
*/
if (incomingSockfd >= ServerInstance->SE->GetMaxFds())
{
ServerInstance->Logs->Log("SOCKET", DEBUG, "Server is full");
ServerInstance->SE->Shutdown(incomingSockfd, 2);
ServerInstance->SE->Close(incomingSockfd);
ServerInstance->stats->statsRefused++;
return;
}
static char buf[MAXBUF];
static char target[MAXBUF];
*target = *buf = '\0';
#ifdef IPV6
if (this->family == AF_INET6)
{
inet_ntop(AF_INET6, &((const sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf));
if (!strncmp(buf, "::ffff:", 7))
{
memmove(buf, buf+7, sizeof(buf)-7);
}
socklen_t raddrsz = sizeof(sockaddr_in6);
if (getsockname(incomingSockfd, (sockaddr*) raddr, &raddrsz) == 0)
inet_ntop(AF_INET6, &((const sockaddr_in6*)raddr)->sin6_addr, target, sizeof(target));
else
ServerInstance->Logs->Log("SOCKET", DEBUG, "Can't get peername: %s", strerror(errno));
}
else
#endif
{
inet_ntop(AF_INET, &((const sockaddr_in*)client)->sin_addr, buf, sizeof(buf));
socklen_t raddrsz = sizeof(sockaddr_in);
if (getsockname(incomingSockfd, (sockaddr*) raddr, &raddrsz) == 0)
inet_ntop(AF_INET, &((const sockaddr_in*)raddr)->sin_addr, target, sizeof(target));
else
ServerInstance->Logs->Log("SOCKET", DEBUG, "Can't get peername: %s", strerror(errno));
}
ServerInstance->SE->NonBlocking(incomingSockfd);
ServerInstance->stats->statsAccept++;
this->OnAcceptReady(target, incomingSockfd, buf);
}
void ListenSocketBase::HandleEvent(EventType e, int err)
{
switch (e)
{
case EVENT_ERROR:
ServerInstance->Logs->Log("SOCKET",DEFAULT,"ListenSocket::HandleEvent() received a socket engine error event! well shit! '%s'", strerror(err));
break;
case EVENT_WRITE:
ServerInstance->Logs->Log("SOCKET",DEBUG,"*** BUG *** ListenSocket::HandleEvent() got a WRITE event!!!");
break;
case EVENT_READ:
this->AcceptInternal();
break;
}
}
void ClientListenSocket::OnAcceptReady(const std::string &ipconnectedto, int nfd, const std::string &incomingip)
{
ServerInstance->Users->AddUser(ServerInstance, nfd, bind_port, false, this->family, client, ipconnectedto);
}
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