Mercurial > hg > early-roguelike
annotate rogue5/wizard.c @ 280:70aa5808c782
Fix potential segfaults at restore related to ctime().
In some games, restore() passes the result of ctime() to mvprintw() or
some other variadic message-formatting function. If ctime() has not
been declared properly, its return type is inferred to be int instead
of char *. This does not cause a warning because the compiler does not
know the correct type of variadic arguments.
On platforms where ints and pointers are not the same size, this can,
probably depending on alignment, result in a segfault that is not easy
to trace.
Including time.h fixes the problem. Some games manually declared
ctime() and avoided the bug. These declarations have also been
replaced with the include.
author | John "Elwin" Edwards |
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date | Fri, 15 Sep 2017 20:51:10 -0400 |
parents | e7aab31362af |
children |
rev | line source |
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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}, |