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/* $Id$ */
/*
 * Copyright (c) 2005 Dimitri Sokolyuk <demon@vhost.dyndns.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <err.h>
#include <string.h>
#include "connect.h"

int
connecttohost(const char *host, const int port)
{
	struct hostent *he;
	struct sockaddr_in sin;
	int s;

	if ((he = gethostbyname(host)) == NULL)
		err(1, "gethostbyname()");

	sin.sin_family = AF_INET;
	sin.sin_port = htons(port);
	sin.sin_addr = *(struct in_addr *) he->h_addr;

	if ((s = socket(AF_INET, SOCK_STREAM, 0)) == -1)
		err(1, "socket()");

	if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) == -1)
		err(1, "connect()");

	return s;
}

int
transfer(int s, char *buf, int size)
{
	int total = 0;
	int left = strlen(buf);
	int ret = 0;

	while (total < left) {
		if ((ret = send(s, buf + total, left, 0)) == -1)
			err(1, "send()");
		total += ret;
		left  -= ret;
	}

	memset(buf, '\0', size);

	total = 0;
	left = size;

	do {
		if ((ret = recv(s, buf + total, size, 0)) == -1)
			err(1, "recv()");
		total += ret;
		size  -= ret;
	} while (ret > 0);

	return 0;
}