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annotate arogue7/player.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 adfa37e67084
children f9ef86cf22b2
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1 /*
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2 * player.c - This file contains functions for dealing with special player
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3 * abilities
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4 *
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5 * Advanced Rogue
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6 * Copyright (C) 1984, 1985, 1986 Michael Morgan, Ken Dalka and AT&T
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7 * All rights reserved.
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8 *
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9 * Based on "Rogue: Exploring the Dungeons of Doom"
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10 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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11 * All rights reserved.
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12 *
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13 * See the file LICENSE.TXT for full copyright and licensing information.
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14 */
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15
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16 /*
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17 * This file contains functions for dealing with special player abilities
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18 */
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19
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20 #include <ctype.h>
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21 #include "curses.h"
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22 #include "rogue.h"
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23 #ifdef PC7300
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24 #include "menu.h"
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25 #endif
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26
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27
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28 /*
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29 * affect:
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30 * cleric affecting undead
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31 */
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32
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33 affect()
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34 {
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35 register struct linked_list *item;
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36 register struct thing *tp;
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37 register char *mname;
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38 bool see;
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39 coord new_pos;
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40 int lvl;
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41
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42 if (!(player.t_ctype == C_CLERIC ||
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43 (player.t_ctype == C_PALADIN && pstats.s_lvl > 4) ||
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44 cur_relic[HEIL_ANKH] != 0)) {
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45 msg("You cannot affect undead.");
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46 return;
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47 }
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48
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49 new_pos.y = hero.y + player.t_newpos.y;
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50 new_pos.x = hero.x + player.t_newpos.x;
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51
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52 if (cansee(new_pos.y, new_pos.x)) see = TRUE;
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53 else see = FALSE;
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54
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55 /* Anything there? */
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56 if (new_pos.y < 0 || new_pos.y > lines-3 ||
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57 new_pos.x < 0 || new_pos.x > cols-1 ||
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58 mvwinch(mw, new_pos.y, new_pos.x) == ' ') {
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59 msg("Nothing to affect.");
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60 return;
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61 }
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62
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63 if ((item = find_mons(new_pos.y, new_pos.x)) == NULL) {
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64 debug("Affect what @ %d,%d?", new_pos.y, new_pos.x);
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65 return;
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66 }
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67 tp = THINGPTR(item);
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68 mname = monster_name(tp);
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69
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70 if (on(player, ISINVIS) && off(*tp, CANSEE)) {
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71 msg("%s%s cannot see you", see ? "The " : "It",
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72 see ? mname : "");
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73 return;
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74 }
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75
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76 if (off(*tp, TURNABLE) || on(*tp, WASTURNED))
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77 goto annoy;
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78 turn_off(*tp, TURNABLE);
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79
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80 lvl = pstats.s_lvl;
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81 if (player.t_ctype == C_PALADIN && cur_relic[HEIL_ANKH] == 0) {
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82 lvl -= 4;
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83 }
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84 /* Can cleric kill it? */
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85 if (lvl >= 3 * tp->t_stats.s_lvl) {
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86 unsigned long test; /* For overflow check */
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87
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88 msg("You have destroyed %s%s.", see ? "the " : "it", see ? mname : "");
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89 test = pstats.s_exp + tp->t_stats.s_exp;
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90
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91 /* Be sure there is no overflow before increasing experience */
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