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annotate rogue5/mach_dep.c @ 75:19903deed392

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arogue5: fix the crash when checking prices in shops. A buffer called curpurch, which stores a description of an item in a trading post which the player might be interested in, was only 15 bytes. It was overflowing into oldrp, a room pointer, leading to segfaults. The size of curpurch has been increased to LINELEN*2, which matches the size of prbuf, which is returned by inv_name and then strcpy()'d to curpurch. As long as nothing overflows prbuf it should be safe now. NOTE that this breaks savefile compatibility.
author John "Elwin" Edwards <elwin@sdf.org>
date Wed, 05 Sep 2012 10:14:34 -0700
parents 655c317b6237
children 2c62bd925c17
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1 /*
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2 * Various installation dependent routines
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3 *
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4 * @(#)mach_dep.c 4.37 (Berkeley) 05/23/83
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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 /*
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14 * The various tuneable defines are:
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15 *
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16 * SCOREFILE Where/if the score file should live.
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17 * ALLSCORES Score file is top ten scores, not top ten
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18 * players. This is only useful when only a few
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19 * people will be playing; otherwise the score file
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20 * gets hogged by just a few people.
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21 * NUMSCORES Number of scores in the score file (default 10).
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22 * NUMNAME String version of NUMSCORES (first character
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23 * should be capitalized) (default "Ten").
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24 * MAXLOAD What (if any) the maximum load average should be
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25 * when people are playing. Since it is divided
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26 * by 10, to specify a load limit of 4.0, MAXLOAD
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27 * should be "40". If defined, then
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28 * LOADAV Should it use it's own routine to get
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29 * the load average?
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30 * NAMELIST If so, where does the system namelist
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31 * hide?
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32 * MAXUSERS What (if any) the maximum user count should be
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33 * when people are playing. If defined, then
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34 * UCOUNT Should it use it's own routine to count
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35 * users?
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36 * UTMP If so, where does the user list hide?
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37 * CHECKTIME How often/if it should check during the game
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38 * for high load average.
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39 */
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40
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41 #include <signal.h>
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42 #include <sys/types.h>
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43 #include <sys/stat.h>
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44 #include <limits.h>
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45 #include <string.h>
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46 #include <fcntl.h>
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47 #include <errno.h>
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48 #include <time.h>
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49 #include <curses.h>
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50 #include "extern.h"
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51
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52 #define NOOP(x) (x += 0)
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53
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54 # ifndef NUMSCORES
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55 # define NUMSCORES 10
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56 # define NUMNAME "Ten"
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57 # endif
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58
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59 #ifdef CHECKTIME
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60 static int num_checks = 0; /* times we've gone over in checkout() */
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61 #endif /* CHECKTIME */
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62
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63 /*
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64 * init_check:
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65 * Check out too see if it is proper to play the game now
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66 */
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67
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68 void
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69 init_check(void)
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70 {
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71 #if defined(MAXLOAD) || defined(MAXUSERS)
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72 if (too_much())
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73 {
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74 printf("Sorry, %s, but the system is too loaded now.\n", whoami);
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75 printf("Try again later. Meanwhile, why not enjoy a%s %s?\n",
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76 vowelstr(fruit), fruit);
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77 if (author())
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78 printf("However, since you're a good guy, it's up to you\n");
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79 else
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80 exit(1);
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81 }
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82 #endif
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83 }
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84
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85 /*
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86 * open_score:
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87 * Open up the score file for future use
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88 */
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89
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90 void
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91 open_score(void)
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92 {
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93 #ifdef SCOREFILE
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94 char *scorefile = SCOREFILE;
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95
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96 numscores = NUMSCORES;
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97 Numname = NUMNAME;
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98
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99 #ifdef ALLSCORES
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100 allscore = TRUE;
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101 #else /* ALLSCORES */
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102 allscore = FALSE;
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103 #endif /* ALLSCORES */
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104
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105 /*