Mercurial > hg > early-roguelike
annotate rogue5/scrolls.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 | f502bf60e6e4 |
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rev | line source |
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33
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1 /* |
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2 * Read a scroll and let it happen |
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3 * |
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4 * @(#)scrolls.c 4.44 (Berkeley) 02/05/99 |
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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 #include <curses.h> |
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14 #include <ctype.h> |
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15 #include "rogue.h" |
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16 |
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17 /* |
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18 * read_scroll: |
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19 * Read a scroll from the pack and do the appropriate thing |
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20 */ |
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21 |
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22 void |
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23 read_scroll(void) |
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24 { |
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25 THING *obj; |
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26 PLACE *pp; |
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27 int y, x; |
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28 int ch; |
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29 int i; |
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30 int discardit = FALSE; |
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31 struct room *cur_room; |
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32 THING *orig_obj; |
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33 coord mp; |
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34 |
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35 obj = get_item("read", SCROLL); |
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36 if (obj == NULL) |
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37 return; |
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38 if (obj->o_type != SCROLL) |
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39 { |
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40 if (!terse) |
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41 msg("there is nothing on it to read"); |
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42 else |
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43 msg("nothing to read"); |
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44 return; |
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45 } |
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46 /* |
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47 * Calculate the effect it has on the poor guy. |
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48 */ |
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49 if (obj == cur_weapon) |
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50 cur_weapon = NULL; |
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51 /* |
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52 * Get rid of the thing |
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53 */ |
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54 discardit = (obj->o_count == 1); |
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55 leave_pack(obj, FALSE, FALSE); |
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56 orig_obj = obj; |
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57 |
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58 switch (obj->o_which) |
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59 { |
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60 case S_CONFUSE: |
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61 /* |
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62 * Scroll of monster confusion. Give him that power. |
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63 */ |
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64 player.t_flags |= CANHUH; |
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65 msg("your hands begin to glow %s", pick_color("red")); |
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66 when S_ARMOR: |
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67 if (cur_armor != NULL) |
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68 { |
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69 cur_armor->o_arm--; |
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70 cur_armor->o_flags &= ~ISCURSED; |
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71 msg("your armor glows %s for a moment", pick_color("silver")); |
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72 } |
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73 when S_HOLD: |
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74 /* |
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75 * Hold monster scroll. Stop all monsters within two spaces |
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76 * from chasing after the hero. |
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77 */ |
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78 |
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79 ch = 0; |
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80 for (x = hero.x - 2; x <= hero.x + 2; x++) |
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81 if (x >= 0 && x < NUMCOLS) |
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82 for (y = hero.y - 2; y <= hero.y + 2; y++) |
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83 if (y >= 0 && y <= NUMLINES - 1) |
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84 if ((obj = moat(y, x)) != NULL && on(*obj, ISRUN)) |
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85 { |
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86 obj->t_flags &= ~ISRUN; |
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87 obj->t_flags |= ISHELD; |
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88 ch++; |
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89 } |
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90 if (ch) |
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91 { |
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92 addmsg("the monster"); |
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93 if (ch > 1) |
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94 addmsg("s around you"); |
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95 addmsg(" freeze"); |
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96 if (ch == 1) |
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97 addmsg("s"); |
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98 endmsg(); |
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99 scr_info[S_HOLD].oi_know = TRUE; |
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100 } |
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101 else |
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102 msg("you feel a strange sense of loss"); |
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103 when S_SLEEP: |
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104 /* |
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105 * Scroll which makes you fall asleep |
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106 */ |