games/atc/log.c

   1 /*-
   2  * Copyright (c) 1990, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Ed James.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. Neither the name of the University nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * @(#)log.c    8.1 (Berkeley) 5/31/93
  33  * $FreeBSD: src/games/atc/log.c,v 1.7 1999/11/30 03:48:20 billf Exp $
  34  * $DragonFly: src/games/atc/log.c,v 1.3 2006/08/08 15:03:02 pavalos Exp $
  35  */
  36
  37 /*
  38  * Copyright (c) 1987 by Ed James, UC Berkeley.  All rights reserved.
  39  *
  40  * Copy permission is hereby granted provided that this notice is
  41  * retained on all partial or complete copies.
  42  *
  43  * For more info on this and all of my stuff, mail edjames@berkeley.edu.
  44  */
  45
  46 #include <sys/stat.h>
  47 #include <err.h>
  48
  49 #include "include.h"
  50 #include "pathnames.h"
  51
  52 #include <sys/utsname.h>
  53
  54 static FILE *score_fp;
  55
  56 static int      compar(const void *, const void *);
  57 static const char       *timestr(int);
  58
  59
  60 static int
  61 compar(const void *va, const void *vb)
  62 {
  63         const SCORE     *a, *b;
  64
  65         a = (const SCORE *)va;
  66         b = (const SCORE *)vb;
  67         if (b->planes == a->planes)
  68                 return (b->time - a->time);
  69         else
  70                 return (b->planes - a->planes);
  71 }
  72
  73 #define SECAMIN         60
  74 #define MINAHOUR        60
  75 #define HOURADAY        24
  76 #define SECAHOUR        (SECAMIN * MINAHOUR)
  77 #define SECADAY         (SECAHOUR * HOURADAY)
  78 #define DAY(t)          ((t) / SECADAY)
  79 #define HOUR(t)         (((t) % SECADAY) / SECAHOUR)
  80 #define MIN(t)          (((t) % SECAHOUR) / SECAMIN)
  81 #define SEC(t)          ((t) % SECAMIN)
  82
  83 static const char *
  84 timestr(int t)
  85 {
  86         static char     s[80];
  87
  88         if (DAY(t) > 0)
  89                 (void)sprintf(s, "%dd+%02dhrs", DAY(t), HOUR(t));
  90         else if (HOUR(t) > 0)
  91                 (void)sprintf(s, "%d:%02d:%02d", HOUR(t), MIN(t), SEC(t));
  92         else if (MIN(t) > 0)
  93                 (void)sprintf(s, "%d:%02d", MIN(t), SEC(t));
  94         else if (SEC(t) > 0)
  95                 (void)sprintf(s, ":%02d", SEC(t));
  96         else
  97                 *s = '\0';
  98
  99         return (s);
 100 }
 101
 102 void
 103 open_score_file(void)
 104 {
 105         mode_t old_mask;
 106         int score_fd;
 107         int flags;
 108
 109         old_mask = umask(0);
 110         score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR, 0664);
 111         umask(old_mask);
 112         if (score_fd < 0) {
 113                 warn("open %s", _PATH_SCORE);
 114                 return;
 115         }
 116         /* Set the close-on-exec flag.  If this fails for any reason, quit
 117          * rather than leave the score file open to tampering.  */
 118         flags = fcntl(score_fd, F_GETFD);
 119         if (flags < 0)
 120                 err(1, "fcntl F_GETFD");
 121         flags |= FD_CLOEXEC;
 122         if (fcntl(score_fd, F_SETFD, flags) == -1)
 123                 err(1, "fcntl F_SETFD");
 124         /*
 125          * This is done to take advantage of stdio, while still
 126          * allowing a O_CREAT during the open(2) of the log file.
 127          */
 128         score_fp = fdopen(score_fd, "r+");
 129         if (score_fp == NULL) {
 130                 warn("fdopen %s", _PATH_SCORE);
 131                 return;
 132         }
 133 }
 134
 135 int
 136 log_score(int list_em)
 137 {
 138         int             i, num_scores = 0, good, changed = 0, found = 0;
 139         struct passwd   *pw;
 140         char            *cp;
 141         SCORE           score[100], thisscore;
 142         struct utsname  xname;
 143
 144         if (score_fp == NULL) {
 145                 warnx("no score file available");
 146                 return (-1);
 147         }
 148
 149         if (flock(fileno(score_fp), LOCK_EX) < 0)
 150         {
 151                 warn("flock %s", _PATH_SCORE);
 152                 return (-1);
 153         }
 154         for (;;) {
 155                 good = fscanf(score_fp, SCORE_SCANF_FMT,
 156                         score[num_scores].name,
 157                         score[num_scores].host,
 158                         score[num_scores].game,
 159                         &score[num_scores].planes,
 160                         &score[num_scores].time,
 161                         &score[num_scores].real_time);
 162                 if (good != 6 || ++num_scores >= NUM_SCORES)
 163                         break;
 164         }
 165         if (!test_mode && !list_em) {
 166                 if ((pw = (struct passwd *) getpwuid(getuid())) == NULL) {
 167                         fprintf(stderr,
 168                                 "getpwuid failed for uid %d.  Who are you?\n",
 169                                 (int)getuid());
 170                         return (-1);
 171                 }
 172                 strcpy(thisscore.name, pw->pw_name);
 173
 174                 uname(&xname);
 175                 strcpy(thisscore.host, xname.nodename);
 176
 177                 cp = rindex(filename, '/');
 178                 if (cp == NULL) {
 179                         fprintf(stderr, "log: where's the '/' in %s?\n", filename);
 180                         return (-1);
 181                 }
 182                 cp++;
 183                 strcpy(thisscore.game, cp);
 184
 185                 thisscore.time = clck;
 186                 thisscore.planes = safe_planes;
 187                 thisscore.real_time = time(0) - start_time;
 188
 189                 for (i = 0; i < num_scores; i++) {
 190                         if (strcmp(thisscore.name, score[i].name) == 0 &&
 191                             strcmp(thisscore.host, score[i].host) == 0 &&
 192                             strcmp(thisscore.game, score[i].game) == 0) {
 193                                 if (thisscore.time > score[i].time) {
 194                                         score[i].time = thisscore.time;
 195                                         score[i].planes = thisscore.planes;
 196                                         score[i].real_time =
 197                                                 thisscore.real_time;
 198                                         changed++;
 199                                 }
 200                                 found++;
 201                                 break;
 202                         }
 203                 }
 204                 if (!found) {
 205                         for (i = 0; i < num_scores; i++) {
 206                                 if (thisscore.time > score[i].time) {
 207                                         if (num_scores < NUM_SCORES)
 208                                                 num_scores++;
 209                                         bcopy(&score[i],
 210                                                 &score[num_scores - 1],
 211                                                 sizeof (score[i]));
 212                                         bcopy(&thisscore, &score[i],
 213                                                 sizeof (score[i]));
 214                                         changed++;
 215                                         break;
 216                                 }
 217                         }
 218                 }
 219                 if (!found && !changed && num_scores < NUM_SCORES) {
 220                         bcopy(&thisscore, &score[num_scores],
 221                                 sizeof (score[num_scores]));
 222                         num_scores++;
 223                         changed++;
 224                 }
 225
 226                 if (changed) {
 227                         if (found)
 228                                 puts("You beat your previous score!");
 229                         else
 230                                 puts("You made the top players list!");
 231                         qsort(score, num_scores, sizeof (*score), compar);
 232                         rewind(score_fp);
 233                         for (i = 0; i < num_scores; i++)
 234                                 fprintf(score_fp, "%s %s %s %d %d %d\n",
 235                                         score[i].name, score[i].host,
 236                                         score[i].game, score[i].planes,
 237                                         score[i].time, score[i].real_time);
 238                 fflush(score_fp);
 239                 if (ferror(score_fp))
 240                         warn("error writing %s", _PATH_SCORE);
 241                 /* It is just possible that updating an entry could
 242                  * have reduced the length of the file, so we
 243                  * truncate it.  The lseek is required for stream/fd
 244                  * synchronisation by POSIX.1.  */
 245                 lseek(fileno(score_fp), 0, SEEK_END);
 246                 ftruncate(fileno(score_fp), ftell(score_fp));
 247                 } else {
 248                         if (found)
 249                                 puts("You didn't beat your previous score.");
 250                         else
 251                                 puts("You didn't make the top players list.");
 252                 }
 253                 putchar('\n');
 254         }
 255         flock(fileno(score_fp), LOCK_UN);
 256         fclose(score_fp);
 257         printf("%2s:  %-8s  %-8s  %-18s  %4s  %9s  %4s\n", "#", "name", "host",
 258                 "game", "time", "real time", "planes safe");
 259         puts("-------------------------------------------------------------------------------");
 260         for (i = 0; i < num_scores; i++) {
 261                 cp = index(score[i].host, '.');
 262                 if (cp != NULL)
 263                         *cp = '\0';
 264                 printf("%2d:  %-8s  %-8s  %-18s  %4d  %9s  %4d\n", i + 1,
 265                         score[i].name, score[i].host, score[i].game,
 266                         score[i].time, timestr(score[i].real_time),
 267                         score[i].planes);
 268         }
 269         putchar('\n');
 270         return (0);
 271 }