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annotate rogue4/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 5926ec314fd4
children 1b73a8641b37
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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 4.23 (Berkeley) 5/19/82
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980, 1981, 1982 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 * MAXLOAD What (if any) the maximum load average should be
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18 * when people are playing. If defined, then
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19 * LOADAV Should rogue define it's own routine to
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20 * get the load average?
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21 * NAMELIST If so, where does the system namelist hide?
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22 * MAXUSERS What (if any) the maximum user count should be
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23 * when people are playing. If defined, then
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24 * UCOUNT Should rogue define it's own routine to
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25 * count users?
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26 * UTMP If so, where does the user list hide?
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27 * CHECKTIME How often/if rogue should check during the game
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28 * for high load average.
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29 */
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30
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31 #include <limits.h>
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32 #include <stdlib.h>
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33 #include <stdio.h>
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34 #include <curses.h>
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35 #include <time.h>
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36 #include <signal.h>
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37 #include <sys/stat.h>
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38 #include <fcntl.h>
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39 #include <string.h>
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40 #include "rogue.h"
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41
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42 int num_checks; /* times we've gone over in checkout() */
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43
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44 #ifdef SCOREFILE
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45 #ifdef LOCKFILE
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46 static char *lockfile = LOCKFILE;
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47 #endif
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48 #endif
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49
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50 /*
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51 * init_check:
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52 * Check out too see if it is proper to play the game now
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53 */
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54 init_check()
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55 {
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56 if (too_much())
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57 {
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58 printf("Sorry, %s, but the system is too loaded now.\n", whoami);
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59 printf("Try again later. Meanwhile, why not enjoy a%s %s?\n",
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60 vowelstr(fruit), fruit);
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61 if (author())
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62 printf("However, since you're a good guy, it's up to you\n");
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63 else
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64 exit(1);
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65 }
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66 }
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67
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68 /*
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69 * open_score:
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70 * Open up the score file for future use, and then
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71 * setuid(getuid()) in case we are running setuid.
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72 */
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73 open_score()
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74 {
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75 #ifdef SCOREFILE
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76 fd = open(SCOREFILE, O_RDWR | O_CREAT, 0666 );
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77 #else
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78 fd = -1;
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79 #endif
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80 if (!use_savedir)
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81 md_normaluser();
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82 return;
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83 }
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84
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85 void open_log(void)
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86 {
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87 #ifdef LOGFILE
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88 lfd = open(LOGFILE, O_WRONLY | O_APPEND | O_CREAT, 0666);
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89 #else
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90 lfd = -1;
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91 #endif
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92 return;
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93 }
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94
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95 /*
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96 * setup:
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97 * Get starting setup for all games
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98 */
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99 setup()
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100 {
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101 void auto_save(), quit(), endit(), tstp();
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102 #ifdef CHECKTIME
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