/*
 *	Network related functions
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <linux/in.h>
#include <unistd.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#ifdef DEBUG
#include <stdio.h>
#endif
#include "net.h"


/*
 *	Create a listening port on tcp port PORT
 */
int createlisten(int port)
{
	struct sockaddr_in localname;
	int sockFd;
	sockFd=socket(AF_INET,SOCK_STREAM,IPPROTO_IP);
	localname.sin_family=AF_INET;
	localname.sin_port=htons(port);
	localname.sin_addr.s_addr=INADDR_ANY;
	if (bind(sockFd,(struct sockaddr *) & localname,sizeof(localname))==-1) { perror("bind");return(-1); }
	if (listen(sockFd,1024)==-1) { perror("listen"); return(-1); }
	return(sockFd);
}


/*
 *	Close that socket, yeah.
 */
void closeconnection(int sockfd) {
	shutdown(sockfd, 1);
	close(sockfd);
}

int createconnection_tcp(char *host, int port) {
	int sockid;
	struct hostent *hostinfo;
	struct sockaddr_in sock;
	if ((hostinfo=gethostbyname(host))==NULL) {
		if (!inet_aton(host,&sock.sin_addr))
			return(-1);
	} else {
		memcpy(&sock.sin_addr.s_addr,hostinfo->h_addr_list[0],hostinfo->h_length);
	}
	sock.sin_family=AF_INET;
	sock.sin_port=htons(port);
	if ((sockid=socket(AF_INET, SOCK_STREAM, 0))<0)
		return(-1);
	connect(sockid, (struct sockaddr *) &sock, sizeof(sock));
	return(sockid);
}