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annotate rogue5/pack.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 e5a15b09ce1d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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33
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1 /*
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2 * Routines to deal with the pack
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3 *
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4 * @(#)pack.c 4.40 (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 <string.h>
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14 #include <curses.h>
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15 #include <ctype.h>
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16 #include "rogue.h"
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17
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18 /*
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19 * update_mdest:
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20 * Called after picking up an object, before discarding it.
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21 * If this was the object of something's desire, that monster will
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22 * get mad and run at the hero
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23 */
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24 update_mdest(obj)
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25 register THING *obj;
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26 {
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27 register THING *mp;
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28
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29 for (mp = mlist; mp != NULL; mp = next(mp))
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30 if (mp->t_dest == &obj->o_pos)
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31 mp->t_dest = &hero;
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32 }
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33
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34 /*
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35 * add_pack:
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36 * Pick up an object and add it to the pack. If the argument is
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37 * non-null use it as the linked_list pointer instead of gettting
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38 * it off the ground.
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39 */
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40
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41 void
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42 add_pack(THING *obj, int silent)
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43 {
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44 THING *op, *lp;
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45 int from_floor;
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46 int discarded = 0;
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47
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48 from_floor = FALSE;
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49 if (obj == NULL)
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50 {
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51 if ((obj = find_obj(hero.y, hero.x)) == NULL)
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52 return;
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53 from_floor = TRUE;
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54 }
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55
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56 /*
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57 * Check for and deal with scare monster scrolls
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58 */
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59 if (obj->o_type == SCROLL && obj->o_which == S_SCARE)
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60 if (obj->o_flags & ISFOUND)
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61 {
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62 detach(lvl_obj, obj);
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63 mvaddch(hero.y, hero.x, floor_ch());
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64 chat(hero.y, hero.x) = (proom->r_flags & ISGONE) ? PASSAGE : FLOOR;
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65 update_mdest(obj);
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66 discarded = 1;
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67 discard(obj);
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68 msg("the scroll turns to dust as you pick it up");
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69 return;
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70 }
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71
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72 if (pack == NULL)
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73 {
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74 pack = obj;
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75 obj->o_packch = pack_char();
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76 inpack++;
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77 }
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78 else
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79 {
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80 lp = NULL;
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81 for (op = pack; op != NULL; op = next(op))
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82 {
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83 if (op->o_type != obj->o_type)
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84 lp = op;
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85 else
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86 {
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87 while (op->o_type == obj->o_type && op->o_which != obj->o_which)
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88 {
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89 lp = op;
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90 if (next(op) == NULL)
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91 break;
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92 else
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93 op = next(op);
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94 }
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95 if (op->o_type == obj->o_type && op->o_which == obj->o_which)
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96 {
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97 if (ISMULT(op->o_type))
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98 {
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99 if (!pack_room(from_floor, obj))
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100 return;
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101 op->o_count++;
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102 dump_it:
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103 update_mdest(obj);
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104 discard(obj);
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105 obj = op;
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106 discarded = 1;
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107 lp = NULL;
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