/* $NetBSD: log.c,v 1.25 2021/05/02 12:50:43 rillig Exp $ */ /*- * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * 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 * 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. */ #include #ifndef lint #if 0 static char sccsid[] = "@(#)log.c 8.1 (Berkeley) 5/31/93"; #else __RCSID("$NetBSD: log.c,v 1.25 2021/05/02 12:50:43 rillig Exp $"); #endif #endif /* not lint */ #include #include #include /* for umask(2) */ #include #include #include #include #include #include #include #include "pathnames.h" #include "def.h" #include "struct.h" #include "extern.h" #include "tunable.h" static FILE *score_fp; static int compar(const void *va, const void *vb) { const SCORE *a, *b; a = (const SCORE *)va; b = (const SCORE *)vb; 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) static const char * timestr(int t) { static char s[80]; if (DAY(t) > 0) (void)snprintf(s, sizeof(s), "%dd+%02dhrs", DAY(t), HOUR(t)); else if (HOUR(t) > 0) (void)snprintf(s, sizeof(s), "%d:%02d:%02d", HOUR(t), MIN(t), SEC(t)); else if (MIN(t) > 0) (void)snprintf(s, sizeof(s), "%d:%02d", MIN(t), SEC(t)); else if (SEC(t) > 0) (void)snprintf(s, sizeof(s), ":%02d", SEC(t)); else *s = '\0'; return (s); } void open_score_file(void) { mode_t old_mask; int score_fd; int flags; old_mask = umask(0); #if defined(O_NOFOLLOW) score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR|O_NOFOLLOW, 0664); #else score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR, 0664); #endif (void)umask(old_mask); if (score_fd < 0) { warn("open %s", _PATH_SCORE); return; } 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"); /* * 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) { warn("fdopen %s", _PATH_SCORE); return; } } int log_score(int list_em) { int i, num_scores = 0, good, changed = 0, found = 0; struct passwd *pw; char *cp; SCORE score[100], thisscore; struct utsname lname; long offset; if (safe_planes == 1) printf("You directed 1 plane safely to its destination.\n\n"); else printf("You directed %d planes safely to their destinations.\n\n", safe_planes); if (score_fp == NULL) { warnx("no score file available"); return (-1); } #ifdef BSD if (flock(fileno(score_fp), LOCK_EX) < 0) #endif #ifdef SYSV if (lockf(fileno(score_fp), F_LOCK, 1) < 0) #endif { warn("flock %s", _PATH_SCORE); return (-1); } for (;;) { good = fscanf(score_fp, SCORE_SCANF_FMT, 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); if (good != 6 || ++num_scores >= NUM_SCORES) break; } if (!test_mode && !list_em) { if ((pw = (struct passwd *) getpwuid(getuid())) == NULL) { (void)fprintf(stderr, "getpwuid failed for uid %d. Who are you?\n", (int)getuid()); return (-1); } (void)strlcpy(thisscore.name, pw->pw_name, SCORE_NAME_LEN); (void)uname(&lname); (void)strlcpy(thisscore.host, lname.nodename, sizeof(thisscore.host)); cp = strrchr(filename, '/'); if (cp == NULL) { (void)fprintf(stderr, "log: where's the '/' in %s?\n", filename); return (-1); } cp++; (void)strlcpy(thisscore.game, cp, SCORE_GAME_LEN); 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 = thisscore.real_time; 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++; (void)memcpy(&score[num_scores - 1], &score[i], sizeof (score[i])); (void)memcpy(&score[i], &thisscore, sizeof (score[i])); changed++; break; } } } if (!found && !changed && num_scores < NUM_SCORES) { (void)memcpy(&score[num_scores], &thisscore, sizeof (score[num_scores])); num_scores++; changed++; } if (changed) { if (found) (void)puts("You beat your previous score!"); else (void)puts("You made the top players list!"); qsort(score, (size_t)num_scores, sizeof (*score), compar); rewind(score_fp); for (i = 0; i < num_scores; i++) (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); (void)lseek(fileno(score_fp), (off_t)0, SEEK_SET); (void)ftruncate(fileno(score_fp), (off_t)offset); rewind(score_fp); } else { if (found) (void)puts( "You didn't beat your previous score."); else (void)puts( "You didn't make the top players list."); } (void)putchar('\n'); } #ifdef BSD (void)flock(fileno(score_fp), LOCK_UN); #endif #ifdef SYSV /* lock will evaporate upon close */ #endif (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"); for (i = 0; i < num_scores; i++) { cp = strchr(score[i].host, '.'); if (cp != NULL) *cp = '\0'; (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); } (void)putchar('\n'); return (0); } /* ARGSUSED */ void log_score_quit(int dummy __unused) { (void)log_score(0); exit(0); }