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. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * @(#)log.c    8.1 (Berkeley) 5/31/93
  37  * $FreeBSD: src/games/atc/log.c,v 1.7 1999/11/30 03:48:20 billf Exp $
  38  * $DragonFly: src/games/atc/log.c,v 1.2 2003/06/17 04:25:22 dillon Exp $
  39  */
  40
  41 /*
  42  * Copyright (c) 1987 by Ed James, UC Berkeley.  All rights reserved.
  43  *
  44  * Copy permission is hereby granted provided that this notice is
  45  * retained on all partial or complete copies.
  46  *
  47  * For more info on this and all of my stuff, mail edjames@berkeley.edu.
  48  */
  49
  50 #include <string.h>
  51 #include "include.h"
  52 #include "pathnames.h"
  53
  54 #ifdef SYSV
  55 #include <sys/utsname.h>
  56 #endif
  57
  58 static FILE *score_fp;
  59
  60 int
  61 compar(va, vb)
  62         const void *va, *vb;
  63 {
  64         const SCORE     *a, *b;
  65
  66         a = (const SCORE *)va;
  67         b = (const SCORE *)vb;
  68
  69         if (b->planes == a->planes)
  70                 return (b->time - a->time);
  71         else
  72                 return (b->planes - a->planes);
  73 }
  74
  75 #define SECAMIN         60
  76 #define MINAHOUR        60
  77 #define HOURADAY        24
  78 #define SECAHOUR        (SECAMIN * MINAHOUR)
  79 #define SECADAY         (SECAHOUR * HOURADAY)
  80 #define DAY(t)          ((t) / SECADAY)
  81 #define HOUR(t)         (((t) % SECADAY) / SECAHOUR)
  82 #define MIN(t)          (((t) % SECAHOUR) / SECAMIN)
  83 #define SEC(t)          ((t) % SECAMIN)
  84
  85 const char      *
  86 timestr(t)
  87 {
  88         static char     s[80];
  89
  90         if (DAY(t) > 0)
  91                 (void)sprintf(s, "%dd+%02dhrs", DAY(t), HOUR(t));
  92         else if (HOUR(t) > 0)
  93                 (void)sprintf(s, "%d:%02d:%02d", HOUR(t), MIN(t), SEC(t));
  94         else if (MIN(t) > 0)
  95                 (void)sprintf(s, "%d:%02d", MIN(t), SEC(t));
  96         else if (SEC(t) > 0)
  97                 (void)sprintf(s, ":%02d", SEC(t));
  98         else
  99                 *s = '\0';
 100
 101         return (s);
 102 }
 103
 104 void
 105 open_score_file()
 106 {
 107         mode_t old_mask;
 108         int score_fd;
 109         int flags;
 110
 111         old_mask = umask(0);
 112         score_fd = open(_PATH_SCORE, O_CREAT|O_RDWR, 0664);
 113         umask(old_mask);
 114         if (score_fd < 0) {
 115                 warn("open %s", _PATH_SCORE);
 116                 return;
 117         }
 118         /* Set the close-on-exec flag.  If this fails for any reason, quit
 119          * rather than leave the score file open to tampering.  */
 120         flags = fcntl(score_fd, F_GETFD);
 121         if (flags < 0)
 122                 err(1, "fcntl F_GETFD");
 123         flags |= FD_CLOEXEC;
 124         if (fcntl(score_fd, F_SETFD, flags) == -1)
 125                 err(1, "fcntl F_SETFD");
 126         /*
 127          * This is done to take advantage of stdio, while still
 128          * allowing a O_CREAT during the open(2) of the log file.
 129          */
 130         score_fp = fdopen(score_fd, "r+");
 131         if (score_fp == NULL) {
 132                 warn("fdopen %s", _PATH_SCORE);
 133                 return;
 134         }
 135 }
 136
 137 int
 138 log_score(list_em)
 139         int list_em;
 140 {
 141         int             i, num_scores = 0, good, changed = 0, found = 0;
 142         struct passwd   *pw;
 143         char            *cp;
 144         SCORE           score[100], thisscore;
 145 #ifdef SYSV
 146         struct utsname  name;
 147 #endif
 148
 149         if (score_fp == NULL) {
 150                 warnx("no score file available");
 151                 return (-1);
 152         }
 153
 154 #ifdef BSD
 155         if (flock(fileno(score_fp), LOCK_EX) < 0)
 156 #endif
 157 #ifdef SYSV
 158         while (lockf(fileno(score_fp), F_LOCK, 1) < 0)
 159 #endif
 160         {
 161                 warn("flock %s", _PATH_SCORE);
 162                 return (-1);
 163         }
 164         for (;;) {
 165                 good = fscanf(score_fp, SCORE_SCANF_FMT,
 166                         score[num_scores].name,
 167                         score[num_scores].host,
 168                         score[num_scores].game,
 169                         &score[num_scores].planes,
 170                         &score[num_scores].time,
 171                         &score[num_scores].real_time);
 172                 if (good != 6 || ++num_scores >= NUM_SCORES)
 173                         break;
 174         }
 175         if (!test_mode && !list_em) {
 176                 if ((pw = (struct passwd *) getpwuid(getuid())) == NULL) {
 177                         fprintf(stderr,
 178                                 "getpwuid failed for uid %d.  Who are you?\n",
 179                                 (int)getuid());
 180                         return (-1);
 181                 }
 182                 strcpy(thisscore.name, pw->pw_name);
 183 #ifdef BSD
 184                 if (gethostname(thisscore.host, sizeof (thisscore.host)) < 0) {
 185                         perror("gethostname");
 186                         return (-1);
 187                 }
 188 #endif
 189 #ifdef SYSV
 190                 uname(&name);
 191                 strcpy(thisscore.host, name.nodename);
 192 #endif
 193
 194                 cp = rindex(file, '/');
 195                 if (cp == NULL) {
 196                         fprintf(stderr, "log: where's the '/' in %s?\n", file);
 197                         return (-1);
 198                 }
 199                 cp++;
 200                 strcpy(thisscore.game, cp);
 201
 202                 thisscore.time = clck;
 203                 thisscore.planes = safe_planes;
 204                 thisscore.real_time = time(0) - start_time;
 205
 206                 for (i = 0; i < num_scores; i++) {
 207                         if (strcmp(thisscore.name, score[i].name) == 0 &&
 208                             strcmp(thisscore.host, score[i].host) == 0 &&
 209                             strcmp(thisscore.game, score[i].game) == 0) {
 210                                 if (thisscore.time > score[i].time) {
 211                                         score[i].time = thisscore.time;
 212                                         score[i].planes = thisscore.planes;
 213                                         score[i].real_time =
 214                                                 thisscore.real_time;
 215                                         changed++;
 216                                 }
 217                                 found++;
 218                                 break;
 219                         }
 220                 }
 221                 if (!found) {
 222                         for (i = 0; i < num_scores; i++) {
 223                                 if (thisscore.time > score[i].time) {
 224                                         if (num_scores < NUM_SCORES)
 225                                                 num_scores++;
 226                                         bcopy(&score[i],
 227                                                 &score[num_scores - 1],
 228                                                 sizeof (score[i]));
 229                                         bcopy(&thisscore, &score[i],
 230                                                 sizeof (score[i]));
 231                                         changed++;
 232                                         break;
 233                                 }
 234                         }
 235                 }
 236                 if (!found && !changed && num_scores < NUM_SCORES) {
 237                         bcopy(&thisscore, &score[num_scores],
 238                                 sizeof (score[num_scores]));
 239                         num_scores++;
 240                         changed++;
 241                 }
 242
 243                 if (changed) {
 244                         if (found)
 245                                 puts("You beat your previous score!");
 246                         else
 247                                 puts("You made the top players list!");
 248                         qsort(score, num_scores, sizeof (*score), compar);
 249                         rewind(score_fp);
 250                         for (i = 0; i < num_scores; i++)
 251                                 fprintf(score_fp, "%s %s %s %d %d %d\n",
 252                                         score[i].name, score[i].host,
 253                                         score[i].game, score[i].planes,
 254                                         score[i].time, score[i].real_time);
 255                 fflush(score_fp);
 256                 if (ferror(score_fp))
 257                         warn("error writing %s", _PATH_SCORE);
 258                 /* It is just possible that updating an entry could
 259                  * have reduced the length of the file, so we
 260                  * truncate it.  The lseek is required for stream/fd
 261                  * synchronisation by POSIX.1.  */
 262                 lseek(fileno(score_fp), 0, SEEK_END);
 263                 ftruncate(fileno(score_fp), ftell(score_fp));
 264                 } else {
 265                         if (found)
 266                                 puts("You didn't beat your previous score.");
 267                         else
 268                                 puts("You didn't make the top players list.");
 269                 }
 270                 putchar('\n');
 271         }
 272 #ifdef BSD
 273         flock(fileno(score_fp), LOCK_UN);
 274 #endif
 275 #ifdef SYSV
 276         /* lock will evaporate upon close */
 277 #endif
 278         fclose(score_fp);
 279         printf("%2s:  %-8s  %-8s  %-18s  %4s  %9s  %4s\n", "#", "name", "host",
 280                 "game", "time", "real time", "planes safe");
 281         puts("-------------------------------------------------------------------------------");
 282         for (i = 0; i < num_scores; i++) {
 283                 cp = index(score[i].host, '.');
 284                 if (cp != NULL)
 285                         *cp = '\0';
 286                 printf("%2d:  %-8s  %-8s  %-18s  %4d  %9s  %4d\n", i + 1,
 287                         score[i].name, score[i].host, score[i].game,
 288                         score[i].time, timestr(score[i].real_time),
 289                         score[i].planes);
 290         }
 291         putchar('\n');
 292         return (0);
 293 }