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annotate rogue5/scmisc.c @ 82:f11eeafc6568

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srogue: don't store machine-dependent metadata in the savefile. Super-Rogue, like Rogue V4, stored data of machine-dependent length in the savefile, to prevent cheating. This made saved games non-portable. Also deleted was a check that used this data, and prevented restoring savefiles from backup. This change BREAKS SAVEFILE COMPATIBILITY, but old files can be converted by removing the block at offset 0x1e with length sizeof(ino_t) + sizeof(dev_t) + 2 * sizeof(time_t). That seems to be 0x14 on i686 and 0x20 on x86_64.
author John "Elwin" Edwards
date Tue, 06 Aug 2013 19:02:58 -0700
parents f502bf60e6e4
children
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33
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1 /*
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2 * copies of several routines needed for score
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3 *
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4 * @(#)smisc.c 4.7 (Berkeley) 02/05/99
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman
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8 * All rights reserved.
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9 *
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10 * See the file LICENSE.TXT for full copyright and licensing information.
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11 */
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12
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13 # include <stdio.h>
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14 # include <sys/types.h>
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15 # include <sys/stat.h>
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16 # include <ctype.h>
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17
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18 # define TRUE 1
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19 # define FALSE 0
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20 # define MAXSTR 80
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21 # define when break;case
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22 # define otherwise break;default
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23
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24 typedef struct {
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25 char *m_name;
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26 } MONST;
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27
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28 char *s_vowelstr();
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29
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30 char *lockfile = "/tmp/.fredlock";
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31
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32 char prbuf[MAXSTR]; /* buffer for sprintfs */
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33
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34 MONST monsters[] = {
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35 { "aquator" }, { "bat" }, { "centaur" }, { "dragon" }, { "emu" },
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36 { "venus flytrap" }, { "griffin" }, { "hobgoblin" }, { "ice monster" },
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37 { "jabberwock" }, { "kobold" }, { "leprechaun" }, { "medusa" },
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38 { "nymph" }, { "orc" }, { "phantom" }, { "quasit" }, { "rattlesnake" },
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39 { "snake" }, { "troll" }, { "ur-vile" }, { "vampire" }, { "wraith" },
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40 { "xeroc" }, { "yeti" }, { "zombie" }
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41 };
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42
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43 /*
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44 * s_lock_sc:
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45 * lock the score file. If it takes too long, ask the user if
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46 * they care to wait. Return TRUE if the lock is successful.
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47 */
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48 int
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49 s_lock_sc(void)
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50 {
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51 int cnt;
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52 struct stat sbuf;
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53
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54 over:
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55 close(8); /* just in case there are no files left */
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56 if (creat(lockfile, 0000) >= 0)
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57 return TRUE;
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58 for (cnt = 0; cnt < 5; cnt++)
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59 {
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60 md_sleep(1);
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61 if (creat(lockfile, 0000) >= 0)
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62 return TRUE;
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63 }
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64 if (stat(lockfile, &sbuf) < 0)
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65 {
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66 creat(lockfile, 0000);
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67 return TRUE;
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68 }
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69 if (time(NULL) - sbuf.st_mtime > 10)
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70 {
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71 if (md_unlink(lockfile) < 0)
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72 return FALSE;
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73 goto over;
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74 }
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75 else
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76 {
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77 printf("The score file is very busy. Do you want to wait longer\n");
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78 printf("for it to become free so your score can get posted?\n");
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79 printf("If so, type \"y\"\n");
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80 (void) fgets(prbuf, MAXSTR, stdin);
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81 if (prbuf[0] == 'y')
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82 for (;;)
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83 {
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84 if (creat(lockfile, 0000) >= 0)
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85 return TRUE;
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86 if (stat(lockfile, &sbuf) < 0)
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87 {
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88 creat(lockfile, 0000);
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89 return TRUE;
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90 }
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91 if (time(NULL) - sbuf.st_mtime > 10)
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92 {
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93 if (md_unlink(lockfile) < 0)
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94 return FALSE;
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95 }
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96 md_sleep(1);
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97 }
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98 else
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99 return FALSE;
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100 }
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101 }
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102
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103 /*
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104 * s_unlock_sc:
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105 * Unlock the score file
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106 */
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