NetBSD/games/atc/log.c

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/* $NetBSD: log.c,v 1.17 2005/08/10 19:21:21 rpaulo Exp $ */
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/*-
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* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
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*
* This code is derived from software contributed to Berkeley by
* Ed James.
*
* Redistribution and use in source and binary forms, with or without
* 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. Neither the name of the University nor the names of its contributors
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* 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.
*/
/*
* Copyright (c) 1987 by Ed James, UC Berkeley. All rights reserved.
*
* Copy permission is hereby granted provided that this notice is
* retained on all partial or complete copies.
*
* For more info on this and all of my stuff, mail edjames@berkeley.edu.
*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
static char sccsid[] = "@(#)log.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: log.c,v 1.17 2005/08/10 19:21:21 rpaulo Exp $");
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#endif
#endif /* not lint */
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#include "include.h"
#include "pathnames.h"
static FILE *score_fp;
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int
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compar(const void *va, const void *vb)
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{
const SCORE *a, *b;
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a = (const SCORE *)va;
b = (const SCORE *)vb;
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if (b->planes == a->planes)
return (b->time - a->time);
else
return (b->planes - a->planes);
}
#define SECAMIN 60
#define MINAHOUR 60
#define HOURADAY 24
#define SECAHOUR (SECAMIN * MINAHOUR)
#define SECADAY (SECAHOUR * HOURADAY)
#define DAY(t) ((t) / SECADAY)
#define HOUR(t) (((t) % SECADAY) / SECAHOUR)
#define MIN(t) (((t) % SECAHOUR) / SECAMIN)
#define SEC(t) ((t) % SECAMIN)
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const char *
timestr(int t)
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{
static char s[80];
if (DAY(t) > 0)
(void)sprintf(s, "%dd+%02dhrs", DAY(t), HOUR(t));
else if (HOUR(t) > 0)
(void)sprintf(s, "%d:%02d:%02d", HOUR(t), MIN(t), SEC(t));
else if (MIN(t) > 0)
(void)sprintf(s, "%d:%02d", MIN(t), SEC(t));
else if (SEC(t) > 0)
(void)sprintf(s, ":%02d", SEC(t));
else
*s = '\0';
return (s);
}
void
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open_score_file(void)
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{
mode_t old_mask;
int score_fd;
int flags;
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old_mask = umask(0);
score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR, 0664);
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(void)umask(old_mask);
if (score_fd < 0) {
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warn("open %s", _PATH_SCORE);
return;
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}
if (score_fd < 3)
exit(1);
/* Set the close-on-exec flag. If this fails for any reason, quit
* rather than leave the score file open to tampering. */
flags = fcntl(score_fd, F_GETFD);
if (flags < 0)
err(1, "fcntl F_GETFD");
flags |= FD_CLOEXEC;
if (fcntl(score_fd, F_SETFD, flags) == -1)
err(1, "fcntl F_SETFD");
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/*
* This is done to take advantage of stdio, while still
* allowing a O_CREAT during the open(2) of the log file.
*/
score_fp = fdopen(score_fd, "r+");
if (score_fp == NULL) {
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warn("fdopen %s", _PATH_SCORE);
return;
}
}
int
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log_score(int list_em)
{
int i, num_scores = 0, good, changed = 0, found = 0;
struct passwd *pw;
char *cp;
SCORE score[100], thisscore;
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struct utsname lname;
long offset;
if (score_fp == NULL) {
warnx("no score file available");
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return (-1);
}
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#ifdef BSD
if (flock(fileno(score_fp), LOCK_EX) < 0)
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#endif
#ifdef SYSV
while (lockf(fileno(score_fp), F_LOCK, 1) < 0)
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#endif
{
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warn("flock %s", _PATH_SCORE);
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return (-1);
}
for (;;) {
good = fscanf(score_fp, SCORE_SCANF_FMT,
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score[num_scores].name,
score[num_scores].host,
score[num_scores].game,
&score[num_scores].planes,
&score[num_scores].time,
&score[num_scores].real_time);
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if (good != 6 || ++num_scores >= NUM_SCORES)
break;
}
if (!test_mode && !list_em) {
if ((pw = (struct passwd *) getpwuid(getuid())) == NULL) {
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(void)fprintf(stderr,
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"getpwuid failed for uid %d. Who are you?\n",
(int)getuid());
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return (-1);
}
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(void)strcpy(thisscore.name, pw->pw_name);
(void)uname(&lname);
(void)strlcpy(thisscore.host, lname.nodename,
sizeof(thisscore.host));
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cp = strrchr(filename, '/');
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if (cp == NULL) {
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(void)fprintf(stderr, "log: where's the '/' in %s?\n",
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filename);
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return (-1);
}
cp++;
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(void)strcpy(thisscore.game, cp);
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thisscore.time = clck;
thisscore.planes = safe_planes;
thisscore.real_time = time(0) - start_time;
for (i = 0; i < num_scores; i++) {
if (strcmp(thisscore.name, score[i].name) == 0 &&
strcmp(thisscore.host, score[i].host) == 0 &&
strcmp(thisscore.game, score[i].game) == 0) {
if (thisscore.time > score[i].time) {
score[i].time = thisscore.time;
score[i].planes = thisscore.planes;
score[i].real_time =
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thisscore.real_time;
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changed++;
}
found++;
break;
}
}
if (!found) {
for (i = 0; i < num_scores; i++) {
if (thisscore.time > score[i].time) {
if (num_scores < NUM_SCORES)
num_scores++;
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(void)memcpy(&score[num_scores - 1],
&score[i], sizeof (score[i]));
(void)memcpy(&score[i], &thisscore,
sizeof (score[i]));
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changed++;
break;
}
}
}
if (!found && !changed && num_scores < NUM_SCORES) {
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(void)memcpy(&score[num_scores], &thisscore,
sizeof (score[num_scores]));
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num_scores++;
changed++;
}
if (changed) {
if (found)
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(void)puts("You beat your previous score!");
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else
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(void)puts("You made the top players list!");
qsort(score, (size_t)num_scores, sizeof (*score),
compar);
rewind(score_fp);
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for (i = 0; i < num_scores; i++)
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(void)fprintf(score_fp, "%s %s %s %d %d %d\n",
score[i].name, score[i].host,
score[i].game, score[i].planes,
score[i].time, score[i].real_time);
(void)fflush(score_fp);
if (ferror(score_fp))
warn("error writing %s", _PATH_SCORE);
/* It is just possible that updating an entry could
* have reduced the length of the file, so we
* truncate it. The seeks are required for stream/fd
* synchronisation by POSIX.1. */
offset = ftell(score_fp);
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(void)lseek(fileno(score_fp), (off_t)0, SEEK_SET);
(void)ftruncate(fileno(score_fp), (off_t)offset);
rewind(score_fp);
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} else {
if (found)
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(void)puts(
"You didn't beat your previous score.");
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else
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(void)puts(
"You didn't make the top players list.");
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}
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(void)putchar('\n');
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}
#ifdef BSD
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(void)flock(fileno(score_fp), LOCK_UN);
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#endif
#ifdef SYSV
/* lock will evaporate upon close */
#endif
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(void)fclose(score_fp);
(void)printf("%2s: %-8s %-8s %-18s %4s %9s %4s\n", "#", "name",
"host", "game", "time", "real time", "planes safe");
(void)printf("-------------------------------------------------------");
(void)printf("-------------------------\n");
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for (i = 0; i < num_scores; i++) {
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cp = strchr(score[i].host, '.');
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if (cp != NULL)
*cp = '\0';
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(void)printf("%2d: %-8s %-8s %-18s %4d %9s %4d\n", i + 1,
score[i].name, score[i].host, score[i].game,
score[i].time, timestr(score[i].real_time),
score[i].planes);
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}
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(void)putchar('\n');
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return (0);
}
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/* ARGSUSED */
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void
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log_score_quit(int dummy __attribute__((__unused__)))
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{
(void)log_score(0);
exit(0);
}