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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
using namespace std;
#include "inspircd_config.h"
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string>
#include <unistd.h>
#include <fcntl.h>
#include <poll.h>
#include <sstream>
#include <iostream>
#include <fstream>
#include "socket.h"
#include "inspircd.h"
#include "inspircd_io.h"
#include "inspircd_util.h"
#include "inspstring.h"
#include "helperfuncs.h"
extern FILE *log_file;
extern int boundPortCount;
extern int openSockfd[MAXSOCKS];
extern time_t TIME;
extern bool unlimitcore;
extern int MaxConn;
InspSocket::InspSocket()
{
this->state = I_DISCONNECTED;
}
InspSocket::InspSocket(int newfd)
{
this->fd = newfd;
this->state = I_CONNECTED;
}
InspSocket::InspSocket(std::string host, int port, bool listening, unsigned long maxtime)
{
if (listening) {
if ((this->fd = OpenTCPSocket()) == ERROR)
{
this->fd = -1;
this->state = I_ERROR;
this->OnError(I_ERR_SOCKET);
log(DEBUG,"OpenTCPSocket() error");
return;
}
else
{
if (BindSocket(this->fd,this->client,this->server,port,(char*)host.c_str()) == ERROR)
{
this->Close();
this->fd = -1;
this->state = I_ERROR;
this->OnError(I_ERR_BIND);
log(DEBUG,"BindSocket() error %s",strerror(errno));
return;
}
else
{
this->state = I_LISTENING;
log(DEBUG,"New socket now in I_LISTENING state");
return;
}
}
} else {
char* ip;
this->host = host;
hostent* hoste = gethostbyname(host.c_str());
if (!hoste) {
ip = (char*)host.c_str();
} else {
struct in_addr* ia = (in_addr*)hoste->h_addr;
ip = inet_ntoa(*ia);
}
timeout_end = time(NULL)+maxtime;
timeout = false;
if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
this->state = I_ERROR;
this->OnError(I_ERR_SOCKET);
return;
}
this->port = port;
inet_aton(ip,&addy);
addr.sin_family = AF_INET;
addr.sin_addr = addy;
addr.sin_port = htons(this->port);
int flags;
flags = fcntl(this->fd, F_GETFL, 0);
fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
if(connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1)
{
if (errno != EINPROGRESS)
{
this->Close();
this->OnError(I_ERR_CONNECT);
this->state = I_ERROR;
return;
}
}
this->state = I_CONNECTING;
return;
}
}
void InspSocket::Close()
{
if (this->fd != -1)
{
this->OnClose();
shutdown(this->fd,2);
close(this->fd);
this->fd = -1;
}
}
char* InspSocket::Read()
{
int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
if (n > 0)
{
return ibuf;
}
else
{
log(DEBUG,"EOF or error on socket");
return NULL;
}
}
// There are two possible outcomes to this function.
// It will either write all of the data, or an undefined amount.
// If an undefined amount is written the connection has failed
// and should be aborted.
int InspSocket::Write(std::string data)
{
char* d = (char*)data.c_str();
unsigned int written = 0;
int n = 0;
int s = data.length();
while ((written < data.length()) && (n >= 0))
{
n = send(this->fd,d,s,0);
if (n > 0)
{
// If we didnt write everything, advance
// the pointers so that when we retry
// the next time around the loop, we try
// to write what we failed to write before.
written += n;
s -= n;
d += n;
}
}
return written;
}
bool InspSocket::Poll()
{
if ((time(NULL) > timeout_end) && (this->state == I_CONNECTING))
{
// for non-listening sockets, the timeout can occur
// which causes termination of the connection after
// the given number of seconds without a successful
// connection.
this->OnTimeout();
this->OnError(I_ERR_TIMEOUT);
timeout = true;
this->state = I_ERROR;
return false;
}
polls.fd = this->fd;
state == I_CONNECTING ? polls.events = POLLOUT : polls.events = POLLIN;
int ret = poll(&polls,1,1);
if (ret > 0)
{
int incoming = -1;
switch (this->state)
{
case I_CONNECTING:
this->SetState(I_CONNECTED);
return this->OnConnected();
break;
case I_LISTENING:
length = sizeof (client);
incoming = accept (this->fd, (sockaddr*)&client,&length);
this->OnIncomingConnection(incoming,inet_ntoa(client.sin_addr));
return true;
break;
case I_CONNECTED:
return this->OnDataReady();
break;
default:
break;
}
}
return true;
}
void InspSocket::SetState(InspSocketState s)
{
log(DEBUG,"Socket state change");
this->state = s;
}
InspSocketState InspSocket::GetState()
{
return this->state;
}
bool InspSocket::OnConnected() { return true; }
void InspSocket::OnError(InspSocketError e) { return; }
int InspSocket::OnDisconnect() { return 0; }
int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
bool InspSocket::OnDataReady() { return true; }
void InspSocket::OnTimeout() { return; }
void InspSocket::OnClose() { return; }
InspSocket::~InspSocket()
{
this->Close();
}
/*
int BindSocket (int sockfd, struct sockaddr_in client, struct sockaddr_in server, int port, char* addr)
int OpenTCPSocket (void)
*/
|
