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annotate rogue3/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 527e2150eaf0
children d9e44e18eeec
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 3.6 (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 <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 * add_pack:
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19 * Pick up an object and add it to the pack. If the argument is non-null
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20 * use it as the linked_list pointer instead of gettting it off the ground.
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21 */
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22 void
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23 add_pack(struct linked_list *item, int silent)
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24 {
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25 struct linked_list *ip, *lp;
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26 struct object *obj, *op;
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27 int exact, from_floor;
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28
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29 if (item == NULL)
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30 {
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31 from_floor = TRUE;
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32 if ((item = find_obj(hero.y, hero.x)) == NULL)
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33 return;
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34 }
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35 else
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36 from_floor = FALSE;
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37 obj = (struct object *) ldata(item);
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38 /*
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39 * Link it into the pack. Search the pack for a object of similar type
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40 * if there isn't one, stuff it at the beginning, if there is, look for one
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41 * that is exactly the same and just increment the count if there is.
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42 * it that. Food is always put at the beginning for ease of access, but
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43 * is not ordered so that you can't tell good food from bad. First check
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44 * to see if there is something in thr same group and if there is then
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45 * increment the count.
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46 */
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47 if (obj->o_group)
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48 {
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49 for (ip = pack; ip != NULL; ip = next(ip))
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50 {
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51 op = (struct object *) ldata(ip);
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52 if (op->o_group == obj->o_group)
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53 {
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54 /*
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55 * Put it in the pack and notify the user
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56 */
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57 op->o_count++;
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58 if (from_floor)
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59 {
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60 detach(lvl_obj, item);
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61 mvaddch(hero.y, hero.x,
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62 (roomin(&hero) == NULL ? PASSAGE : FLOOR));
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63 }
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64 discard(item);
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65 item = ip;
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66 goto picked_up;
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67 }
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68 }
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69 }
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70 /*
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71 * Check if there is room
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72 */
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73 if (inpack == MAXPACK-1)
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74 {
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75 msg("You can't carry anything else.");
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76 return;
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77 }
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78 /*
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79 * Check for and deal with scare monster scrolls
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80 */
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81 if (obj->o_type == SCROLL && obj->o_which == S_SCARE)
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82 if (obj->o_flags & ISFOUND)
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83 {
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84 msg("The scroll turns to dust as you pick it up.");
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85 detach(lvl_obj, item);
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86 mvaddch(hero.y, hero.x, FLOOR);
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87 return;
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88 }
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89 else
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90 obj->o_flags |= ISFOUND;
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91
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92 inpack++;
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93 if (from_floor)
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94 {
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95 detach(lvl_obj, item);
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96 mvaddch(hero.y, hero.x, (roomin(&hero) == NULL ? PASSAGE : FLOOR));
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97 }
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98 /*
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99 * Search for an object of the same type
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100 */
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101 exact = FALSE;
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102 for (ip = pack; ip != NULL; ip = next(ip))
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103 {
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104 op = (struct object *) ldata(ip);
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105 if (obj->o_type == op->o_type)
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