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annotate rogue5/wizard.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 f502bf60e6e4
children e7aab31362af
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33
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1 /*
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2 * Special wizard commands (some of which are also non-wizard commands
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3 * under strange circumstances)
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4 *
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5 * @(#)wizard.c 4.30 (Berkeley) 02/05/99
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6 *
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7 * Rogue: Exploring the Dungeons of Doom
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8 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman
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9 * All rights reserved.
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10 *
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11 * See the file LICENSE.TXT for full copyright and licensing information.
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12 */
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13
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14 #include <stdlib.h>
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15 #include <curses.h>
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16 #include <string.h>
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17 #include <ctype.h>
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18 #include "rogue.h"
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19
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20 /*
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21 * whatis:
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22 * What a certin object is
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23 */
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24
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25 void
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26 whatis(int insist, int type)
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27 {
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28 THING *obj;
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29
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30 if (pack == NULL)
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31 {
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32 msg("you don't have anything in your pack to identify");
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33 return;
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34 }
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35
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36 for (;;)
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37 {
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38 obj = get_item("identify", type);
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39 if (insist)
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40 {
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41 if (n_objs == 0)
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42 return;
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43 else if (obj == NULL)
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44 msg("you must identify something");
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45 else if (type && obj->o_type != type &&
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46 !(type == R_OR_S && (obj->o_type == RING || obj->o_type == STICK)) )
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47 msg("you must identify a %s", type_name(type));
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48 else
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49 break;
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50 }
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51 else
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52 break;
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53 }
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54
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55 if (obj == NULL)
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56 return;
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57
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58 switch (obj->o_type)
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59 {
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60 case SCROLL:
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61 set_know(obj, scr_info);
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62 when POTION:
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63 set_know(obj, pot_info);
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64 when STICK:
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65 set_know(obj, ws_info);
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66 when WEAPON:
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67 case ARMOR:
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68 obj->o_flags |= ISKNOW;
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69 when RING:
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70 set_know(obj, ring_info);
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71 }
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72 msg(inv_name(obj, FALSE));
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73 }
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74
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75 /*
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76 * set_know:
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77 * Set things up when we really know what a thing is
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78 */
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79
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80 void
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81 set_know(THING *obj, struct obj_info *info)
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82 {
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83 char **guess;
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84
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85 info[obj->o_which].oi_know = TRUE;
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86 obj->o_flags |= ISKNOW;
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87 guess = &info[obj->o_which].oi_guess;
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88 if (*guess)
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89 {
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90 free(*guess);
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91 *guess = NULL;
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92 }
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93 }
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94
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95 /*
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96 * type_name:
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97 * Return a pointer to the name of the type
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98 */
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99 const char *
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100 type_name(int type)
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101 {
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102 struct h_list *hp;
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103 struct h_list tlist[] = {
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104 {POTION, "potion", FALSE},
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105 {SCROLL, "scroll", FALSE},
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106 {FOOD, "food", FALSE},
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107 {R_OR_S, "ring, wand or staff", FALSE},
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