proxy_udp.cpp
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/***************************************************************************
* Copyright (C) 2005 by Jeff Ferr *
* root@sat *
* *
* This program 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; either version 2 of the License, or *
* (at your option) any later version. *
* *
* 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, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "jdatagramsocket.h"
#include "jfileinputstream.h"
#include "jbufferedreader.h"
#include "jstringtokenizer.h"
#include "jsocketlib.h"
#include <iostream>
#include <stdexcept>
using namespace jsocket;
#define BUFFER_SIZE 4096
jio::FileInputStream *file = NULL;
jio::BufferedReader *reader = NULL;
std::vector<Connection *> hosts;
int receive_port = 0;
int init_args(int argc, char **argv)
{
if (argc < 3) {
return -1;
}
try {
file = new jio::FileInputStream(argv[2]);
reader = new jio::BufferedReader(file);
receive_port = atoi(argv[1]);
} catch (...) {
if (file != NULL) {
file->Close();
delete file;
file = NULL;
}
if (reader != NULL) {
delete reader;
reader = NULL;
}
return -1;
}
Connection *host;
std::string line;
while (reader->IsEOF() == false) {
try {
line = reader->ReadLine();
jcommon::StringTokenizer token(line, ":", jcommon::JTT_STRING, false);
if (token.GetSize() == 2) {
host = new DatagramSocket(token.GetToken(0), atoi(token.GetToken(1).c_str())); // host, port
hosts.push_back(host);
}
} catch (...) {
}
}
file->Close();
return 0;
}
int init_proxy()
{
// TODO:: testar no win32
DatagramSocket server(receive_port);
DatagramSocket *udp;
char buffer[BUFFER_SIZE];
int length;
std::vector<Connection *>::iterator i;
while (true) {
try {
length = server.GetInputStream()->Read(buffer, BUFFER_SIZE);
std::cout << "Sending:: " << length << " B/s\r" << std::flush;
if (length > 0) {
for (i=hosts.begin(); i!=hosts.end(); i++) {
udp = (DatagramSocket *)(*i);
if (udp->GetOutputStream()->Write(buffer, length) < 0) {
std::cout << "Cliente " << udp->GetInetAddress()->GetHostName() << " morto !" << std::endl;
}
}
}
} catch (std::runtime_error &e) {
std::cout << "error in init proxy" << e.what() << std::endl;
return -1;
}
}
return 0;
}
void help(char *p)
{
std::cout << "JProxy\n" << std::endl;
std::cout << "use: " << p << " <recv_port> <file_hosts>\n" << std::endl;
exit(1);
}
int main(int argc, char **argv)
{
InitWindowsSocket();
if (init_args(argc, argv) == -1) {
help(argv[0]);
}
if (init_proxy() == -1) {
return -1;
}
ReleaseWindowsSocket();
return 0;
}