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annotate rogue5/rings.c @ 176:db1c9a21a7c3

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srogue: prevent overflowing the score file name. If SCOREFILE is not defined, roguehome() is called to find a directory for the score file. It copies up to PATH_MAX-20 bytes from an environment variable to a static buffer. Later these are strcpy()'d to scorefile, which is of size LINLEN. Unfortunately LINLEN is 80 and PATH_MAX is at least 256. On Linux, it happens to be 4096. I haven't yet managed to crash or exploit it, but there are surely no beneficial consequences, so roguehome() has been modified to check the length, and the string it returns is also checked in main().
author John "Elwin" Edwards
date Sun, 02 Aug 2015 12:14:47 -0400
parents f502bf60e6e4
children
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33
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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1 /*
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2 * Routines dealing specifically with rings
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3 *
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4 * @(#)rings.c 4.19 (Berkeley) 05/29/83
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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 "rogue.h"
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15
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16 /*
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17 * ring_on:
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18 * Put a ring on a hand
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19 */
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20
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21 void
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22 ring_on(void)
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23 {
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24 THING *obj;
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25 int ring;
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26
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27 obj = get_item("put on", RING);
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28 /*
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29 * Make certain that it is somethings that we want to wear
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30 */
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31 if (obj == NULL)
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32 return;
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33 if (obj->o_type != RING)
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34 {
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35 if (!terse)
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36 msg("it would be difficult to wrap that around a finger");
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37 else
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38 msg("not a ring");
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39 return;
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40 }
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41
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42 /*
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43 * find out which hand to put it on
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44 */
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45 if (is_current(obj))
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46 return;
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47
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48 if (cur_ring[LEFT] == NULL && cur_ring[RIGHT] == NULL)
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49 {
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50 if ((ring = gethand()) < 0)
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51 return;
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52 }
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53 else if (cur_ring[LEFT] == NULL)
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54 ring = LEFT;
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55 else if (cur_ring[RIGHT] == NULL)
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56 ring = RIGHT;
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57 else
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58 {
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59 if (!terse)
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60 msg("you already have a ring on each hand");
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61 else
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62 msg("wearing two");
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63 return;
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64 }
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65 cur_ring[ring] = obj;
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66
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67 /*
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68 * Calculate the effect it has on the poor guy.
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69 */
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70 switch (obj->o_which)
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71 {
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72 case R_ADDSTR:
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73 chg_str(obj->o_arm);
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74 break;
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75 case R_SEEINVIS:
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76 invis_on();
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77 break;
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78 case R_AGGR:
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79 aggravate();
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80 break;
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81 }
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82
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83 if (!terse)
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84 addmsg("you are now wearing ");
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85 msg("%s (%c)", inv_name(obj, TRUE), obj->o_packch);
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86 }
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87
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88 /*
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89 * ring_off:
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90 * take off a ring
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91 */
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92
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93 void
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94 ring_off(void)
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95 {
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96 int ring;
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97 THING *obj;
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98
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99 if (cur_ring[LEFT] == NULL && cur_ring[RIGHT] == NULL)
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100 {
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101 if (terse)
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102 msg("no rings");
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103 else
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104 msg("you aren't wearing any rings");
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105 return;
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106 }
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107 else if (cur_ring[LEFT] == NULL)
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108 ring = RIGHT;