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Initial revision
git-svn-id: file:///srv/svn/joey/bsdgames-trunk@5086 a4a2c43b-8ac3-0310-8836-e0e880c912e2
This commit is contained in:
joey
531
sail/sync.c
Normal file
531
sail/sync.c
Normal file
@@ -0,0 +1,531 @@
|
||||
/* $NetBSD: sync.c,v 1.10 1998/09/11 14:15:46 hubertf Exp $ */
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/*
|
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the University of
|
||||
* California, Berkeley and its contributors.
|
||||
* 4. Neither the name of the University nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*/
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||||
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||||
#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)sync.c 8.2 (Berkeley) 4/28/95";
|
||||
#else
|
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__RCSID("$NetBSD: sync.c,v 1.10 1998/09/11 14:15:46 hubertf Exp $");
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#endif
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||||
#endif /* not lint */
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#include <fcntl.h>
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#include <errno.h>
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#ifdef __STDC__
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#include <stdarg.h>
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#else
|
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#include <varargs.h>
|
||||
#endif
|
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/file.h>
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#include <sys/types.h>
|
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#include <sys/stat.h>
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#include <time.h>
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#include "extern.h"
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#include "pathnames.h"
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#define BUFSIZE 4096
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static char sync_buf[BUFSIZE];
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static char *sync_bp = sync_buf;
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static char sync_lock[25];
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static char sync_file[25];
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static long sync_seek;
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static FILE *sync_fp;
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void
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fmtship(buf, len, fmt, ship)
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char *buf;
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size_t len;
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const char *fmt;
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struct ship *ship;
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{
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while (*fmt) {
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if (len-- == 0) {
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*buf = '\0';
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return;
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}
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if (*fmt == '$' && fmt[1] == '$') {
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size_t l = snprintf(buf, len, "%s (%c%c)",
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ship->shipname, colours(ship), sterncolour(ship));
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buf += l;
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len -= l - 1;
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fmt += 2;
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}
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else
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*buf++ = *fmt++;
|
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}
|
||||
|
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if (len > 0)
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*buf = '\0';
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}
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/*VARARGS3*/
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void
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#ifdef __STDC__
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makesignal(struct ship *from, const char *fmt, struct ship *ship, ...)
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#else
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makesignal(va_alias)
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va_dcl
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||||
#endif
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||||
{
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||||
char message[BUFSIZ];
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||||
char format[BUFSIZ];
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va_list ap;
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#ifndef __STDC__
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struct ship *from;
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const char *fmt;
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struct ship *ship;
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||||
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va_start(ap);
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from = va_arg(ap, struct ship *);
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||||
fmt = va_arg(ap, const char *);
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ship = va_arg(ap, struct ship *);
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||||
#else
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va_start(ap, ship);
|
||||
#endif
|
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fmtship(format, sizeof(format), fmt, ship);
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(void) vsprintf(message, format, ap);
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va_end(ap);
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Write(W_SIGNAL, from, 1, (long)message, 0, 0, 0);
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}
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void
|
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#ifdef __STDC__
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makemsg(struct ship *from, const char *fmt, ...)
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#else
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||||
makemsg(va_alias)
|
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va_dcl
|
||||
#endif
|
||||
{
|
||||
char message[BUFSIZ];
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||||
va_list ap;
|
||||
#ifndef __STDC__
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||||
struct ship *from;
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const char *fmt;
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||||
|
||||
va_start(ap);
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||||
from = va_arg(ap, struct ship *);
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||||
fmt = va_arg(ap, const char *);
|
||||
#else
|
||||
va_start(ap, fmt);
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||||
#endif
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(void) vsprintf(message, fmt, ap);
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||||
va_end(ap);
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Write(W_SIGNAL, from, 1, (long)message, 0, 0, 0);
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}
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int
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sync_exists(game)
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int game;
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{
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char buf[sizeof sync_file];
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struct stat s;
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time_t t;
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(void) sprintf(buf, _PATH_SYNC, game);
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(void) time(&t);
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setegid(egid);
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if (stat(buf, &s) < 0) {
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setegid(gid);
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return 0;
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}
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if (s.st_mtime < t - 60*60*2) { /* 2 hours */
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(void) unlink(buf);
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(void) sprintf(buf, _PATH_LOCK, game);
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(void) unlink(buf);
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setegid(gid);
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return 0;
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} else {
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setegid(gid);
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return 1;
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}
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||||
}
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||||
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||||
int
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sync_open()
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{
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struct stat tmp;
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if (sync_fp != NULL)
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(void) fclose(sync_fp);
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(void) sprintf(sync_lock, _PATH_LOCK, game);
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(void) sprintf(sync_file, _PATH_SYNC, game);
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setegid(egid);
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if (stat(sync_file, &tmp) < 0) {
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mode_t omask = umask(002);
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sync_fp = fopen(sync_file, "w+");
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(void) umask(omask);
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} else
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sync_fp = fopen(sync_file, "r+");
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setegid(gid);
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if (sync_fp == NULL)
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return -1;
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sync_seek = 0;
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||||
return 0;
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}
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||||
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||||
void
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sync_close(remove)
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char remove;
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{
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if (sync_fp != 0)
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(void) fclose(sync_fp);
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if (remove) {
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setegid(egid);
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||||
(void) unlink(sync_file);
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setegid(gid);
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}
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}
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void
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Write(type, ship, isstr, a, b, c, d)
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int type;
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struct ship *ship;
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||||
int isstr;
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||||
long a, b, c, d;
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||||
{
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||||
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||||
if (isstr)
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(void) sprintf(sync_bp, "%d %d %d %s\n",
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type, ship->file->index, isstr, (char *) a);
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||||
else
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(void) sprintf(sync_bp, "%d %d %d %ld %ld %ld %ld\n",
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type, ship->file->index, isstr, a, b, c, d);
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while (*sync_bp++)
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;
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sync_bp--;
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if (sync_bp >= &sync_buf[sizeof sync_buf])
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abort();
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(void) sync_update(type, ship, a, b, c, d);
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}
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int
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Sync()
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{
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sig_t sighup, sigint;
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int n;
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int type, shipnum, isstr;
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long a, b, c, d;
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char buf[80];
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char erred = 0;
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sighup = signal(SIGHUP, SIG_IGN);
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sigint = signal(SIGINT, SIG_IGN);
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for (n = TIMEOUT; --n >= 0;) {
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#ifdef LOCK_EX
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if (flock(fileno(sync_fp), LOCK_EX|LOCK_NB) >= 0)
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break;
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if (errno != EWOULDBLOCK)
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return -1;
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#else
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setegid(egid);
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if (link(sync_file, sync_lock) >= 0) {
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setegid(gid);
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break;
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}
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setegid(gid);
|
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if (errno != EEXIST)
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return -1;
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#endif
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sleep(1);
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}
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if (n <= 0)
|
||||
return -1;
|
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(void) fseek(sync_fp, sync_seek, 0);
|
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for (;;) {
|
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switch (fscanf(sync_fp, "%d%d%d", &type, &shipnum, &isstr)) {
|
||||
case 3:
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||||
break;
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||||
case EOF:
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||||
goto out;
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default:
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goto bad;
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}
|
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if (shipnum < 0 || shipnum >= cc->vessels)
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goto bad;
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||||
if (isstr != 0 && isstr != 1)
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goto bad;
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if (isstr) {
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char *p;
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for (p = buf;;) {
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||||
switch (*p++ = getc(sync_fp)) {
|
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case '\n':
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p--;
|
||||
case EOF:
|
||||
break;
|
||||
default:
|
||||
if (p >= buf + sizeof buf)
|
||||
p--;
|
||||
continue;
|
||||
}
|
||||
break;
|
||||
}
|
||||
*p = 0;
|
||||
for (p = buf; *p == ' '; p++)
|
||||
;
|
||||
a = (long)p;
|
||||
b = c = d = 0;
|
||||
} else
|
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if (fscanf(sync_fp, "%ld%ld%ld%ld", &a, &b, &c, &d) != 4)
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goto bad;
|
||||
if (sync_update(type, SHIP(shipnum), a, b, c, d) < 0)
|
||||
goto bad;
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||||
}
|
||||
bad:
|
||||
erred++;
|
||||
out:
|
||||
if (!erred && sync_bp != sync_buf) {
|
||||
(void) fseek(sync_fp, 0L, 2);
|
||||
(void) fwrite(sync_buf, sizeof *sync_buf, sync_bp - sync_buf,
|
||||
sync_fp);
|
||||
(void) fflush(sync_fp);
|
||||
sync_bp = sync_buf;
|
||||
}
|
||||
sync_seek = ftell(sync_fp);
|
||||
#ifdef LOCK_EX
|
||||
(void) flock(fileno(sync_fp), LOCK_UN);
|
||||
#else
|
||||
setegid(egid);
|
||||
(void) unlink(sync_lock);
|
||||
setegid(gid);
|
||||
#endif
|
||||
(void) signal(SIGHUP, sighup);
|
||||
(void) signal(SIGINT, sigint);
|
||||
return erred ? -1 : 0;
|
||||
}
|
||||
|
||||
int
|
||||
sync_update(type, ship, a, b, c, d)
|
||||
int type;
|
||||
struct ship *ship;
|
||||
long a, b, c, d;
|
||||
{
|
||||
switch (type) {
|
||||
case W_DBP: {
|
||||
struct BP *p = &ship->file->DBP[a];
|
||||
p->turnsent = b;
|
||||
p->toship = SHIP(c);
|
||||
p->mensent = d;
|
||||
break;
|
||||
}
|
||||
case W_OBP: {
|
||||
struct BP *p = &ship->file->OBP[a];
|
||||
p->turnsent = b;
|
||||
p->toship = SHIP(c);
|
||||
p->mensent = d;
|
||||
break;
|
||||
}
|
||||
case W_FOUL: {
|
||||
struct snag *p = &ship->file->foul[a];
|
||||
if (SHIP(a)->file->dir == 0)
|
||||
break;
|
||||
if (p->sn_count++ == 0)
|
||||
p->sn_turn = turn;
|
||||
ship->file->nfoul++;
|
||||
break;
|
||||
}
|
||||
case W_GRAP: {
|
||||
struct snag *p = &ship->file->grap[a];
|
||||
if (SHIP(a)->file->dir == 0)
|
||||
break;
|
||||
if (p->sn_count++ == 0)
|
||||
p->sn_turn = turn;
|
||||
ship->file->ngrap++;
|
||||
break;
|
||||
}
|
||||
case W_UNFOUL: {
|
||||
struct snag *p = &ship->file->foul[a];
|
||||
if (p->sn_count > 0) {
|
||||
if (b) {
|
||||
ship->file->nfoul -= p->sn_count;
|
||||
p->sn_count = 0;
|
||||
} else {
|
||||
ship->file->nfoul--;
|
||||
p->sn_count--;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
case W_UNGRAP: {
|
||||
struct snag *p = &ship->file->grap[a];
|
||||
if (p->sn_count > 0) {
|
||||
if (b) {
|
||||
ship->file->ngrap -= p->sn_count;
|
||||
p->sn_count = 0;
|
||||
} else {
|
||||
ship->file->ngrap--;
|
||||
p->sn_count--;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
case W_SIGNAL:
|
||||
if (mode == MODE_PLAYER) {
|
||||
if (nobells)
|
||||
Signal("$$: %s", ship, (char *) a);
|
||||
else
|
||||
Signal("\7$$: %s", ship, (char *) a);
|
||||
}
|
||||
break;
|
||||
case W_CREW: {
|
||||
struct shipspecs *s = ship->specs;
|
||||
s->crew1 = a;
|
||||
s->crew2 = b;
|
||||
s->crew3 = c;
|
||||
break;
|
||||
}
|
||||
case W_CAPTAIN:
|
||||
(void) strncpy(ship->file->captain, (char *)a,
|
||||
sizeof ship->file->captain - 1);
|
||||
ship->file->captain[sizeof ship->file->captain - 1] = 0;
|
||||
break;
|
||||
case W_CAPTURED:
|
||||
if (a < 0)
|
||||
ship->file->captured = 0;
|
||||
else
|
||||
ship->file->captured = SHIP(a);
|
||||
break;
|
||||
case W_CLASS:
|
||||
ship->specs->class = a;
|
||||
break;
|
||||
case W_DRIFT:
|
||||
ship->file->drift = a;
|
||||
break;
|
||||
case W_EXPLODE:
|
||||
if ((ship->file->explode = a) == 2)
|
||||
ship->file->dir = 0;
|
||||
break;
|
||||
case W_FS:
|
||||
ship->file->FS = a;
|
||||
break;
|
||||
case W_GUNL: {
|
||||
struct shipspecs *s = ship->specs;
|
||||
s->gunL = a;
|
||||
s->carL = b;
|
||||
break;
|
||||
}
|
||||
case W_GUNR: {
|
||||
struct shipspecs *s = ship->specs;
|
||||
s->gunR = a;
|
||||
s->carR = b;
|
||||
break;
|
||||
}
|
||||
case W_HULL:
|
||||
ship->specs->hull = a;
|
||||
break;
|
||||
case W_MOVE:
|
||||
(void) strncpy(ship->file->movebuf, (char *)a,
|
||||
sizeof ship->file->movebuf - 1);
|
||||
ship->file->movebuf[sizeof ship->file->movebuf - 1] = 0;
|
||||
break;
|
||||
case W_PCREW:
|
||||
ship->file->pcrew = a;
|
||||
break;
|
||||
case W_POINTS:
|
||||
ship->file->points = a;
|
||||
break;
|
||||
case W_QUAL:
|
||||
ship->specs->qual = a;
|
||||
break;
|
||||
case W_RIGG: {
|
||||
struct shipspecs *s = ship->specs;
|
||||
s->rig1 = a;
|
||||
s->rig2 = b;
|
||||
s->rig3 = c;
|
||||
s->rig4 = d;
|
||||
break;
|
||||
}
|
||||
case W_RIG1:
|
||||
ship->specs->rig1 = a;
|
||||
break;
|
||||
case W_RIG2:
|
||||
ship->specs->rig2 = a;
|
||||
break;
|
||||
case W_RIG3:
|
||||
ship->specs->rig3 = a;
|
||||
break;
|
||||
case W_RIG4:
|
||||
ship->specs->rig4 = a;
|
||||
break;
|
||||
case W_COL:
|
||||
ship->file->col = a;
|
||||
break;
|
||||
case W_DIR:
|
||||
ship->file->dir = a;
|
||||
break;
|
||||
case W_ROW:
|
||||
ship->file->row = a;
|
||||
break;
|
||||
case W_SINK:
|
||||
if ((ship->file->sink = a) == 2)
|
||||
ship->file->dir = 0;
|
||||
break;
|
||||
case W_STRUCK:
|
||||
ship->file->struck = a;
|
||||
break;
|
||||
case W_TA:
|
||||
ship->specs->ta = a;
|
||||
break;
|
||||
case W_ALIVE:
|
||||
alive = 1;
|
||||
break;
|
||||
case W_TURN:
|
||||
turn = a;
|
||||
break;
|
||||
case W_WIND:
|
||||
winddir = a;
|
||||
windspeed = b;
|
||||
break;
|
||||
case W_BEGIN:
|
||||
(void) strcpy(ship->file->captain, "begin");
|
||||
people++;
|
||||
break;
|
||||
case W_END:
|
||||
*ship->file->captain = 0;
|
||||
ship->file->points = 0;
|
||||
people--;
|
||||
break;
|
||||
case W_DDEAD:
|
||||
hasdriver = 0;
|
||||
break;
|
||||
default:
|
||||
fprintf(stderr, "sync_update: unknown type %d\r\n", type);
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user