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annotate rogue3/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 527e2150eaf0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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0
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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 3.17 (Berkeley) 6/15/81
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980, 1981 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 <stdlib.h>
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15 #include <string.h>
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16 #include "rogue.h"
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17
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18 void
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19 ring_on()
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20 {
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21 struct object *obj;
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22 struct linked_list *item;
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23 int ring;
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24 str_t save_max;
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25 char buf[80];
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26
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27 item = 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 (item == NULL)
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32 return;
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33 obj = (struct object *) ldata(item);
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34 if (obj->o_type != RING)
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35 {
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36 if (!terse)
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37 msg("It would be difficult to wrap that around a finger");
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38 else
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39 msg("Not a ring");
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40 return;
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41 }
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42
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43 /*
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44 * find out which hand to put it on
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45 */
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46 if (is_current(obj))
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47 return;
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48
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49 if (cur_ring[LEFT] == NULL && cur_ring[RIGHT] == NULL)
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50 {
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51 if ((ring = gethand()) < 0)
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52 return;
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53 }
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54 else if (cur_ring[LEFT] == NULL)
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55 ring = LEFT;
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56 else if (cur_ring[RIGHT] == NULL)
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57 ring = RIGHT;
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58 else
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59 {
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60 if (!terse)
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61 msg("You already have a ring on each hand");
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62 else
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63 msg("Wearing two");
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64 return;
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65 }
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66 cur_ring[ring] = obj;
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67
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68 /*
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69 * Calculate the effect it has on the poor guy.
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70 */
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71 switch (obj->o_which)
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72 {
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73 case R_ADDSTR:
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74 save_max = max_stats.s_str;
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75 chg_str(obj->o_ac);
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76 max_stats.s_str = save_max;
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77 break;
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78 case R_SEEINVIS:
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79 player.t_flags |= CANSEE;
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80 light(&hero);
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81 mvwaddch(cw, hero.y, hero.x, PLAYER);
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82 break;
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83 case R_AGGR:
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84 aggravate();
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85 break;
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86 }
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87 status();
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88
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89 if (obj->o_which >= MAXRINGS)
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90 return;
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91
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92 if (r_know[obj->o_which] && r_guess[obj->o_which])
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93 {
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94 free(r_guess[obj->o_which]);
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95 r_guess[obj->o_which] = NULL;
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96 }
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97 else if (!r_know[obj->o_which] && askme && r_guess[obj->o_which] == NULL)
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98 {
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99 mpos = 0;
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100 msg(terse ? "Call it: " : "What do you want to call it? ");
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101 if (get_str(buf, cw) == NORM)
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102 {
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103 r_guess[obj->o_which] = malloc(strlen(buf) + 1);
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104 if (r_guess[obj->o_which] != NULL)
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105 strcpy(r_guess[obj->o_which], buf);
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