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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* network.cc
*
* Wed Nov 3 21:23:14 CET 2004
* Copyright 2004 Bent Bisballe
* deva@aasimon.org
****************************************************************************/
/*
* 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 Library 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 <config.h>
#include "network.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
Network::Network(Socket *gs, Error* err)
{
error = err;
s = gs;
}
Network::~Network()
{
}
int Network::write(void *buf, int size)
{
if(!s->isConnected()) {
char errbuf[] = "Write attempted to a socket not connected!\0";
if(error) error->pushError(errbuf);
else fprintf(stderr, errbuf);
return 0;
}
int n = send(s->ssocket, buf, size, MSG_WAITALL);
if(n == -1) {
char errbuf[] = "An error occurred!\0";
if(error) error->pushError(errbuf);
else fprintf(stderr, errbuf);
}
return n;
}
int Network::read(void *buf, int size)
{
if(!s->isConnected()) {
char errbuf[] = "Read attempted from a socket not connected!\0";
if(error) error->pushError(errbuf);
else fprintf(stderr, errbuf);
return 0;
}
int n = recv(s->ssocket, buf, size, MSG_WAITALL);
if(n == -1) {
char errbuf[] = "An error occurred!\0";
if(error) error->pushError(errbuf);
else fprintf(stderr, errbuf);
}
return n;
}
/*
struct msghdr {
void *msg_name // Optional address.
socklen_t msg_namelen // Size of address.
struct iovec *msg_iov // Scatter/gather array.
int msg_iovlen // Members in msg_iov.
void *msg_control // Ancillary data; see below.
socklen_t msg_controllen // Ancillary data buffer len.
int msg_flags // Flags on received message.
};
*/
int Network::sendPackage(n_header *h, void* buf, int bufsz)
{
struct msghdr msg;
struct iovec iovecs[2];
memset(&msg, 0, sizeof(msg));
msg.msg_iov = iovecs;
msg.msg_iovlen = 2;
msg.msg_iov[0].iov_base = h;
msg.msg_iov[0].iov_len = sizeof(*h);
msg.msg_iov[1].iov_base = buf;
msg.msg_iov[1].iov_len = bufsz;
int n = sendmsg(s->ssocket, &msg, 0);
if(n < 0) {
char errbuf[] = "A network error ocurred during sendPackage!\0";
if(error) error->pushError(errbuf);
else perror(errbuf);
return -1;
}
return n;
}
int Network::recvPackage(n_header *h, void* buf, int bufsz)
{
struct msghdr msg;
struct iovec iovecs[2];
memset(&msg, 0, sizeof(msg));
iovecs[0].iov_base = h;
iovecs[0].iov_len = sizeof(*h);
iovecs[1].iov_base = buf;
iovecs[1].iov_len = bufsz;
msg.msg_iov = iovecs;
msg.msg_iovlen = 2;
int n = recvmsg(s->ssocket, &msg, MSG_WAITALL);
if(n < 0) {
char errbuf[] = "A network error ocurred during recvPackage!\0";
if(error) error->pushError(errbuf);
else perror(errbuf);
return -1;
}
if(msg.msg_iovlen != 2) {
char errbuf[] = "Wrong package format!\0";
if(error) error->pushError(errbuf);
else perror(errbuf);
return -1;
}
return n;
}
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