/*      $OpenBSD: log.c,v 1.26 2024/08/20 15:48:32 deraadt Exp $        */
/*      $NetBSD: log.c,v 1.3 1995/03/21 15:04:21 cgd 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 <sys/stat.h>
#include <sys/types.h>

#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

#include "extern.h"
#include "pathnames.h"

static FILE *score_fp;

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 MINUTES(t)              (((t) % SECAHOUR) / SECAMIN)
#define SEC(t)          ((t) % SECAMIN)

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), MINUTES(t), SEC(t));
        else if (MINUTES(t) > 0)
                (void)snprintf(s, sizeof s, "%d:%02d", MINUTES(t), SEC(t));
        else if (SEC(t) > 0)
                (void)snprintf(s, sizeof s, ":%02d", SEC(t));
        else
                *s = '\0';

        return (s);
}

int
open_score_file(void)
{
        mode_t old_mode;
        char *home;
        char scorefile[PATH_MAX];
        int ret;
        int score_fd;

        home = getenv("HOME");
        if (home == NULL || *home == '\0')
                err(1, "getenv");
        ret = snprintf(scorefile, sizeof(scorefile), "%s/%s", home,
            ".atc.scores");
        if (ret < 0 || ret >= PATH_MAX)
                errc(1, ENAMETOOLONG, "%s/%s", home, ".atc.scores");

        old_mode = umask(0);
        score_fd = open(scorefile, O_CREAT|O_RDWR, 0644);
        if (score_fd == -1)
                err(1, "open");
        /*
         * 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)
                err(1, "fdopen");
        umask(old_mode);
        return (0);
}

int
log_score(int list_em)
{
        int             i, num_scores = 0, good, changed = 0, found = 0;
        const char      *name;
        char            *cp;
        char            scanstr[50];
        SCORE           score[NUM_SCORES], thisscore;

        if (score_fp == NULL)
                return (-1);
        if (flock(fileno(score_fp), LOCK_EX) == -1)
                err(1, "flock");
        snprintf(scanstr, 50, "%%%zus %%%zus %%d %%d %%d", sizeof(score[0].name)-1,
            sizeof(score[0].game)-1);
        for (;;) {
                good = fscanf(score_fp, scanstr,
                        score[num_scores].name,
                        score[num_scores].game,
                        &score[num_scores].planes,
                        &score[num_scores].time,
                        &score[num_scores].real_time);
                if (good != 5 || ++num_scores >= NUM_SCORES)
                        break;
        }
        if (!test_mode && !list_em) {
                name = getenv("LOGNAME");
                if (name == NULL || *name == '\0')
                        name = getenv("USER");
                if (name == NULL || *name == '\0')
                        name = getlogin();
                if (name == NULL || *name == '\0')
                        name = "  ???";
                strlcpy(thisscore.name, name, sizeof(thisscore.name));

                cp = strrchr(file, '/');
                if (cp == NULL) {
                        warnx("log: where's the '/' in %s?", file);
                        return (-1);
                }
                cp++;
                strlcpy(thisscore.game, cp, sizeof(thisscore.game));

                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.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++;
                                        memcpy(&score[num_scores - 1],
                                                &score[i],
                                                sizeof (score[i]));
                                        memcpy(&score[i], &thisscore,
                                                sizeof (score[i]));
                                        changed++;
                                        break;
                                }
                        }
                }
                if (!found && !changed && num_scores < NUM_SCORES) {
                        memcpy(&score[num_scores], &thisscore,
                                sizeof (score[num_scores]));
                        num_scores++;
                        changed++;
                }

                if (seeded) {
                        puts("The high score list does not include '-r' seeded games.");
                } else if (changed) {
                        if (found)
                                puts("You beat your previous score!");
                        else
                                puts("You made the top players list!");
                        qsort(score, num_scores, sizeof (*score), compar);
                        if (fseek(score_fp, 0L, SEEK_SET) == -1)
                                err(1, "fseek");
                        for (i = 0; i < num_scores; i++)
                                fprintf(score_fp, "%s %s %d %d %d\n",
                                        score[i].name,
                                        score[i].game, score[i].planes,
                                        score[i].time, score[i].real_time);
                } else {
                        if (found)
                                puts("You didn't beat your previous score.");
                        else
                                puts("You didn't make the top players list.");
                }
                putchar('\n');
        }
        flock(fileno(score_fp), LOCK_UN);
        fflush(score_fp);
        fsync(fileno(score_fp));
        if (fseek(score_fp, 0L, SEEK_SET) == -1)
                err(1, "fseek");
        printf("%2s:  %-31s  %-18s  %4s  %9s  %4s\n", "#", "name",
                "game", "time", "real time", "safe");
        puts("-------------------------------------------------------------------------------");
        for (i = 0; i < num_scores; i++) {
                printf("%2d:  %-31s  %-18s  %4d  %9s  %4d\n", i + 1,
                        score[i].name, score[i].game,
                        score[i].time, timestr(score[i].real_time),
                        score[i].planes);
        }
        putchar('\n');
        return (0);
}

void
log_score_quit(int dummy)
{
        (void)log_score(0);     /* XXX signal race */
        exit(0);                /* XXX signal race */
}