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annotate rogue3/monsters.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
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1 /*
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2 * File with various monster functions in it
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3 *
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4 * @(#)monsters.c 3.18 (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 "rogue.h"
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15 #include <string.h>
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16 #include <ctype.h>
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17
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18 /*
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19 * List of monsters in rough order of vorpalness
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20 */
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21 char lvl_mons[27] = "KJBSHEAOZGLCRQNYTWFIXUMVDP";
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22 char wand_mons[27] = "KJBSH AOZG CRQ Y W IXU V ";
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23
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24 /*
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25 * randmonster:
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26 * Pick a monster to show up. The lower the level,
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27 * the meaner the monster.
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28 */
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29
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30 int
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31 randmonster(int wander)
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32 {
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33 int d;
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34 char *mons;
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35
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36 mons = wander ? wand_mons : lvl_mons;
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37 do
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38 {
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39 d = level + (rnd(10) - 5);
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40 if (d < 1)
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41 d = rnd(5) + 1;
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42 if (d > 26)
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43 d = rnd(5) + 22;
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44 } while (mons[--d] == ' ');
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45 return mons[d];
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46 }
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47
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48 /*
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49 * new_monster:
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50 * Pick a new monster and add it to the list
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51 */
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52
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53 void
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54 new_monster(struct linked_list *item, int type, coord *cp)
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55 {
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56 struct thing *tp;
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57 struct monster *mp;
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58
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59 attach(mlist, item);
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60 tp = (struct thing *) ldata(item);
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61 tp->t_type = type;
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62 tp->t_pos = *cp;
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63 tp->t_oldch = mvwinch(cw, cp->y, cp->x);
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64 mvwaddch(mw, cp->y, cp->x, tp->t_type);
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65 mp = &monsters[tp->t_type-'A'];
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66 tp->t_stats.s_hpt = roll(mp->m_stats.s_lvl, 8);
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67 tp->t_stats.s_lvl = mp->m_stats.s_lvl;
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68 tp->t_stats.s_arm = mp->m_stats.s_arm;
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69 strcpy(tp->t_stats.s_dmg,mp->m_stats.s_dmg);
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70 tp->t_stats.s_exp = mp->m_stats.s_exp;
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71 tp->t_stats.s_str.st_str = 10;
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72 tp->t_flags = mp->m_flags;
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73 tp->t_turn = TRUE;
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74 tp->t_pack = NULL;
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75 if (ISWEARING(R_AGGR))
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76 runto(cp, &hero);
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77 if (type == 'M')
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78 {
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79 int mch = 0;
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80
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81 if (tp->t_pack != NULL)
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82 mch = ((struct object *) ldata(tp->t_pack))->o_type;
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83 else
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84 switch (rnd(level > 25 ? 9 : 8))
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85 {
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86 case 0: mch = GOLD;
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87 when 1: mch = POTION;
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88 when 2: mch = SCROLL;
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89 when 3: mch = STAIRS;
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90 when 4: mch = WEAPON;
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91 when 5: mch = ARMOR;
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92 when 6: mch = RING;
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93 when 7: mch = STICK;
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94 when 8: mch = AMULET;
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95 }
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96 tp->t_disguise = mch;
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97 }
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98 }
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99
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100 /*
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101 * wanderer:
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102 * A wandering monster has awakened and is headed for the player
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103 */
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104
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