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  */
  35
  36 /*
  37  * Copyright (c) 1987 by Ed James, UC Berkeley.  All rights reserved.
  38  *
  39  * Copy permission is hereby granted provided that this notice is
  40  * retained on all partial or complete copies.
  41  *
  42  * For more info on this and all of my stuff, mail edjames@berkeley.edu.
  43  */
  44
  45 #include <sys/stat.h>
  46 #include <err.h>
  47
  48 #include "include.h"
  49 #include "pathnames.h"
  50
  51 #include <sys/utsname.h>
  52
  53 static FILE *score_fp;
  54
  55 static int      compar(const void *, const void *);
  56 static const char       *timestr(int);
  57
  58
  59 static int
  60 compar(const void *va, const void *vb)
  61 {
  62         const SCORE     *a, *b;
  63
  64         a = (const SCORE *)va;
  65         b = (const SCORE *)vb;
  66         if (b->planes == a->planes)
  67                 return (b->time - a->time);
  68         else
  69                 return (b->planes - a->planes);
  70 }
  71
  72 #define SECAMIN         60
  73 #define MINAHOUR        60
  74 #define HOURADAY        24
  75 #define SECAHOUR        (SECAMIN * MINAHOUR)
  76 #define SECADAY         (SECAHOUR * HOURADAY)
  77 #define DAY(t)          ((t) / SECADAY)
  78 #define HOUR(t)         (((t) % SECADAY) / SECAHOUR)
  79 #define MIN(t)          (((t) % SECAHOUR) / SECAMIN)
  80 #define SEC(t)          ((t) % SECAMIN)
  81
  82 static const char *
  83 timestr(int t)
  84 {
  85         static char     s[80];
  86
  87         if (DAY(t) > 0)
  88                 (void)sprintf(s, "%dd+%02dhrs", DAY(t), HOUR(t));
  89         else if (HOUR(t) > 0)
  90                 (void)sprintf(s, "%d:%02d:%02d", HOUR(t), MIN(t), SEC(t));
  91         else if (MIN(t) > 0)
  92                 (void)sprintf(s, "%d:%02d", MIN(t), SEC(t));
  93         else if (SEC(t) > 0)
  94                 (void)sprintf(s, ":%02d", SEC(t));
  95         else
  96                 *s = '\0';
  97
  98         return (s);
  99 }
 100
 101 void
 102 open_score_file(void)
 103 {
 104         mode_t old_mask;
 105         int score_fd;
 106         int flags;
 107
 108         old_mask = umask(0);
 109         score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR, 0664);
 110         umask(old_mask);
 111         if (score_fd < 0) {
 112                 warn("open %s", _PATH_SCORE);
 113                 return;
 114         }
 115         /* Set the close-on-exec flag.  If this fails for any reason, quit
 116          * rather than leave the score file open to tampering.  */
 117         flags = fcntl(score_fd, F_GETFD);
 118         if (flags < 0)
 119                 err(1, "fcntl F_GETFD");
 120         flags |= FD_CLOEXEC;
 121         if (fcntl(score_fd, F_SETFD, flags) == -1)
 122                 err(1, "fcntl F_SETFD");
 123         /*
 124          * This is done to take advantage of stdio, while still
 125          * allowing a O_CREAT during the open(2) of the log file.
 126          */
 127         score_fp = fdopen(score_fd, "r+");
 128         if (score_fp == NULL) {
 129                 warn("fdopen %s", _PATH_SCORE);
 130                 return;
 131         }
 132 }
 133
 134 int
 135 log_score(int list_em)
 136 {
 137         int             i, num_scores = 0, good, changed = 0, found = 0;
 138         struct passwd   *pw;
 139         char            *cp;
 140         SCORE           score[100], thisscore;
 141         struct utsname  xname;
 142
 143         if (score_fp == NULL) {
 144                 warnx("no score file available");
 145                 return (-1);
 146         }
 147
 148         if (flock(fileno(score_fp), LOCK_EX) < 0)
 149         {
 150                 warn("flock %s", _PATH_SCORE);
 151                 return (-1);
 152         }
 153         for (;;) {
 154                 good = fscanf(score_fp, SCORE_SCANF_FMT,
 155                         score[num_scores].name,
 156                         score[num_scores].host,
 157                         score[num_scores].game,
 158                         &score[num_scores].planes,
 159                         &score[num_scores].time,
 160                         &score[num_scores].real_time);
 161                 if (good != 6 || ++num_scores >= NUM_SCORES)
 162                         break;
 163         }
 164         if (!test_mode && !list_em) {
 165                 if ((pw = (struct passwd *) getpwuid(getuid())) == NULL) {
 166                         fprintf(stderr,
 167                                 "getpwuid failed for uid %d.  Who are you?\n",
 168                                 (int)getuid());
 169                         return (-1);
 170                 }
 171                 strcpy(thisscore.name, pw->pw_name);
 172
 173                 uname(&xname);
 174                 strcpy(thisscore.host, xname.nodename);
 175
 176                 cp = rindex(filename, '/');
 177                 if (cp == NULL) {
 178                         fprintf(stderr, "log: where's the '/' in %s?\n", filename);
 179                         return (-1);
 180                 }
 181                 cp++;
 182                 strcpy(thisscore.game, cp);
 183
 184                 thisscore.time = clck;
 185                 thisscore.planes = safe_planes;
 186                 thisscore.real_time = time(0) - start_time;
 187
 188                 for (i = 0; i < num_scores; i++) {
 189                         if (strcmp(thisscore.name, score[i].name) == 0 &&
 190                             strcmp(thisscore.host, score[i].host) == 0 &&
 191                             strcmp(thisscore.game, score[i].game) == 0) {
 192                                 if (thisscore.time > score[i].time) {
 193                                         score[i].time = thisscore.time;
 194                                         score[i].planes = thisscore.planes;
 195                                         score[i].real_time =
 196                                                 thisscore.real_time;
 197                                         changed++;
 198                                 }
 199                                 found++;
 200                                 break;
 201                         }
 202                 }
 203                 if (!found) {
 204                         for (i = 0; i < num_scores; i++) {
 205                                 if (thisscore.time > score[i].time) {
 206                                         if (num_scores < NUM_SCORES)
 207                                                 num_scores++;
 208                                         bcopy(&score[i],
 209                                                 &score[num_scores - 1],
 210                                                 sizeof (score[i]));
 211                                         bcopy(&thisscore, &score[i],
 212                                                 sizeof (score[i]));
 213                                         changed++;
 214                                         break;
 215                                 }
 216                         }
 217                 }
 218                 if (!found && !changed && num_scores < NUM_SCORES) {
 219                         bcopy(&thisscore, &score[num_scores],
 220                                 sizeof (score[num_scores]));
 221                         num_scores++;
 222                         changed++;
 223                 }
 224
 225                 if (changed) {
 226                         if (found)
 227                                 puts("You beat your previous score!");
 228                         else
 229                                 puts("You made the top players list!");
 230                         qsort(score, num_scores, sizeof (*score), compar);
 231                         rewind(score_fp);
 232                         for (i = 0; i < num_scores; i++)
 233                                 fprintf(score_fp, "%s %s %s %d %d %d\n",
 234                                         score[i].name, score[i].host,
 235                                         score[i].game, score[i].planes,
 236                                         score[i].time, score[i].real_time);
 237                 fflush(score_fp);
 238                 if (ferror(score_fp))
 239                         warn("error writing %s", _PATH_SCORE);
 240                 /* It is just possible that updating an entry could
 241                  * have reduced the length of the file, so we
 242                  * truncate it.  The lseek is required for stream/fd
 243                  * synchronisation by POSIX.1.  */
 244                 lseek(fileno(score_fp), 0, SEEK_END);
 245                 ftruncate(fileno(score_fp), ftell(score_fp));
 246                 } else {
 247                         if (found)
 248                                 puts("You didn't beat your previous score.");
 249                         else
 250                                 puts("You didn't make the top players list.");
 251                 }
 252                 putchar('\n');
 253         }
 254         flock(fileno(score_fp), LOCK_UN);
 255         fclose(score_fp);
 256         printf("%2s:  %-8s  %-8s  %-18s  %4s  %9s  %4s\n", "#", "name", "host",
 257                 "game", "time", "real time", "planes safe");
 258         puts("-------------------------------------------------------------------------------");
 259         for (i = 0; i < num_scores; i++) {
 260                 cp = index(score[i].host, '.');
 261                 if (cp != NULL)
 262                         *cp = '\0';
 263                 printf("%2d:  %-8s  %-8s  %-18s  %4d  %9s  %4d\n", i + 1,
 264                         score[i].name, score[i].host, score[i].game,
 265                         score[i].time, timestr(score[i].real_time),
 266                         score[i].planes);
 267         }
 268         putchar('\n');
 269         return (0);
 270 }
 271
 272 void
 273 log_score_quit(__unused int sig)
 274 {
 275         log_score(0);
 276         exit(0);
 277 }