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annotate srogue/global.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 34d7a614855e
children ee250e3646fd
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36
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1 /*
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2 * global variable declaration
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3 *
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4 * @(#)global.c 9.0 (rdk) 7/17/84
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5 *
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6 * Super-Rogue
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7 * Copyright (C) 1984 Robert D. Kindelberger
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8 * All rights reserved.
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9 *
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10 * Based on "Rogue: Exploring the Dungeons of Doom"
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11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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12 * All rights reserved.
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13 *
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14 * See the file LICENSE.TXT for full copyright and licensing information.
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15 */
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16
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17 #include "rogue.h"
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18
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19 struct room rooms[MAXROOMS]; /* One for each room -- A level */
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20 struct room *oldrp; /* Roomin(&oldpos) */
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21 struct linked_list *mlist = NULL; /* monsters on this level */
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22 struct thing player; /* The rogue */
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23 struct stats max_stats; /* The maximum for the player */
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24 struct linked_list *lvl_obj = NULL; /* objects on this level */
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25 struct object *cur_weapon = NULL; /* Which weapon he is weilding */
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26 struct object *cur_armor = NULL; /* the rogue's armor */
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27 struct object *cur_ring[2]; /* Which rings are being worn */
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28 struct stats *him; /* pointer to hero stats */
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29 struct trap traps[MAXTRAPS]; /* traps on this level */
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30
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31 int playuid; /* uid of current player */
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32 int playgid; /* gid of current player */
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33 int level = 1; /* What level rogue is on */
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34 int levcount = 0; /* # of active mons this level */
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35 int levtype = NORMLEV; /* type of level this is, maze, etc. */
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36 int trader = 0; /* no. of purchases */
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37 int curprice = -1; /* current price of item */
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38 int purse = 0; /* How much gold the rogue has */
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39 int mpos = 0; /* Where cursor is on top line */
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40 int ntraps; /* # of traps on this level */
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41 int packvol = 0; /* volume of things in pack */
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42 int total = 0; /* Total dynamic memory bytes */
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43 int demoncnt = 0; /* number of active daemons */
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44 int lastscore = -1; /* Score before this turn */
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45 int no_food = 0; /* # of levels without food */
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46 int seed; /* Random number seed */
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47 int dnum; /* Dungeon number */
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48 int count = 0; /* # of times to repeat cmd */
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49 int fung_hit = 0; /* # of time fungi has hit */
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50 int quiet = 0; /* # of quiet turns */
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51 int max_level = 1; /* Deepest player has gone */
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52 int food_left = HUNGERTIME; /* Amount of food stomach */
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53 int group = NEWGROUP; /* Current group number */
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54 int hungry_state = F_OKAY; /* How hungry is he */
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55 int foodlev = 1; /* how fast he eats food */
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56 int ringfood = 0; /* rings affect on food consumption */
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57 char take; /* Thing the rogue is taking */
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58 char runch; /* Direction player is running */
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59 char curpurch[15]; /* name of item ready to buy */
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60
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61 char prbuf[LINLEN]; /* Buffer for sprintfs */
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62 char whoami[LINLEN]; /* Name of player */
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63 char fruit[LINLEN]; /* Favorite fruit */
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64 char huh[LINLEN]; /* The last message printed */
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65 char file_name[LINLEN]; /* Save file name */
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66 char scorefile[LINLEN]; /* place for scorefile */
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67 char home[LINLEN]; /* User's home directory */
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68 char outbuf[BUFSIZ]; /* Output buffer for stdout */
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69
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70 char *s_guess[MAXSCROLLS]; /* his guess at what scroll is */
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71 char *p_guess[MAXPOTIONS]; /* his guess at what potion is */
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72 char *r_guess[MAXRINGS]; /* his guess at what ring is */
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73 char *ws_guess[MAXSTICKS]; /* his guess at what wand is */
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74
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75 bool isfight = FALSE; /* true if player is fighting */
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76 bool nlmove = FALSE; /* true when transported to new level */
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77 bool inpool = FALSE; /* true if hero standing in pool */
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78 bool inwhgt = FALSE; /* true if from wghtchk() */
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79 bool running = FALSE; /* True if player is running */
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80 bool playing = TRUE; /* True until he quits */
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81 bool wizard = FALSE; /* True if he is a wizard */
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82 bool after = TRUE; /* True if we want after daemons */
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83 bool door_stop = FALSE; /* Stop run when we pass a door */
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84 bool firstmove = FALSE; /* First move after door_stop */
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85 bool waswizard = FALSE; /* Was a wizard sometime */
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86 bool amulet = FALSE; /* He found the amulet */
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87 bool in_shell = FALSE; /* True if executing a shell */
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88 bool nochange = FALSE; /* true if last stat same as now */
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89 bool use_savedir = FALSE; /* true if using system savefiles */
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90
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91 bool s_know[MAXSCROLLS]; /* Does he know about a scroll */
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92 bool p_know[MAXPOTIONS]; /* Does he know about a potion */
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93 bool r_know[MAXRINGS]; /* Does he know about a ring */
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94 bool ws_know[MAXSTICKS]; /* Does he know about a stick */
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95
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96 char spacemsg[] = { "-- Press space to continue --" };
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97 char morestr[] = { "-- More --" };
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98 char retstr[] = { "[Press return to continue]" };
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99 char wizstr[] = { "Wizards Password: " };
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100 char illegal[] = { "Illegal command '%s'." };
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101 char callit[] = { "Call it: " };
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