133 lines
3 KiB
C
133 lines
3 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* projects/authors will amend these files as needed.
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*
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* ---
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*
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* host.c: make stream connection to empire
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*
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* Known contributors to this file:
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* Dave Pare, 1989
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* Steve McClure, 1998
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#ifndef _WIN32
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#include <unistd.h>
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#else
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#include <winsock.h>
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#endif
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#include <ctype.h>
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#include "misc.h"
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int
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hostaddr(name, addr)
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s_char *name;
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struct sockaddr_in *addr;
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{
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#ifndef _WIN32
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extern u_long inet_addr();
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#endif
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struct hostent *hp;
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if (name == 0 || *name == 0)
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return 0;
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if (isdigit(*name)) {
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addr->sin_addr.s_addr = inet_addr(name);
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} else {
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hp = gethostbyname(name);
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if (hp == NULL) {
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fprintf(stderr, "%s: No such host\n", name);
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return 0;
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}
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bcopy(hp->h_addr, (s_char *)&addr->sin_addr,
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sizeof(addr->sin_addr));
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#ifdef _WIN32
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printf("Trying to connect to '%s'\n", inet_ntoa(addr->sin_addr));
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fflush(stdout);
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#endif
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}
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return 1;
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}
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int
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hostport(name, addr)
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s_char *name;
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struct sockaddr_in *addr;
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{
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struct servent *sp;
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#ifndef _WIN32
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int atoi();
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#endif
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if (name == 0 || *name == 0)
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return 0;
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if (isdigit(*name)) {
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#ifndef _WIN32
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addr->sin_port = htons(atoi(name));
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#else
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addr->sin_port = atoi(name);
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addr->sin_port = htons(addr->sin_port);
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#endif
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} else {
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sp = getservbyname(name, "tcp");
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if (sp == NULL)
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return 0;
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addr->sin_port = sp->s_port;
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}
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return 1;
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}
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int
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hostconnect(addr)
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struct sockaddr_in *addr;
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{
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int s;
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s = socket(AF_INET, SOCK_STREAM, 0);
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if (s < 0) {
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#ifdef _WIN32
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errno = WSAGetLastError();
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#endif
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perror("socket");
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return -1;
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}
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addr->sin_family = AF_INET;
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if (connect(s, (struct sockaddr *)addr, sizeof(*addr)) < 0) {
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#ifdef _WIN32
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errno = WSAGetLastError();
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#endif
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perror("connect");
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#ifdef _WIN32
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printf("Check that your EMPIREHOST and EMPIREPORT are correct.\n");
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#endif
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(void) close(s);
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return -1;
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}
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return s;
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}
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