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annotate xrogue/effects.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 ce0cf824c192
children f54901b9c39b
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1 /*
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2 effects.c - functions for dealing with appllying effects to monsters
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3
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4 XRogue: Expeditions into the Dungeons of Doom
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5 Copyright (C) 1991 Robert Pietkivitch
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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10 All rights reserved.
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11
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12 Based on "Rogue: Exploring the Dungeons of Doom"
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13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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14 All rights reserved.
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15
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16 See the file LICENSE.TXT for full copyright and licensing information.
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17 */
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18
135
ce0cf824c192 xrogue: add missing includes.
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19 #include <string.h>
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20 #include <curses.h>
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21 #include "rogue.h"
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22
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23 /*
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24 * effect:
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25 * Check for effects of one thing hitting another thing. Return
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26 * the reason code if the defender is killed. Otherwise return 0.
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27 */
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28
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29 effect(att, def, weap, thrown, see_att, see_def)
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30 register struct thing *att, *def;
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31 struct object *weap;
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32 bool thrown;
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33 register bool see_att, see_def;
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34 {
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35 register bool att_player, def_player;
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36 char attname[LINELEN+1], defname[LINELEN+1];
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37
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38 /* See if the attacker or defender is the player */
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39 att_player = (att == &player);
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40 def_player = (def == &player);
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41
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42 /*
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43 * If the player could see the attacker or defender, they can't
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44 * surprise anymore (don't bother checking if they could).
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45 */
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46 if (see_att) turn_off(*att, CANSURPRISE);
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47 if (see_def) turn_off(*def, CANSURPRISE);
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48
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49 /* What are the attacker and defender names? */
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50 if (att_player) strcpy(attname, "you");
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51 else {
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52 if (see_att) strcpy(attname, monster_name(att));
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53 else strcpy(attname, "something");
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54 }
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55
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56 if (def_player) strcpy(defname, "you");
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57 else {
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58 if (see_def) strcpy(defname, monster_name(def));
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59 else strcpy(defname, "something");
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60 }
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61
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62 /*
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63 * See what happens to the attacker first. We can skip this
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64 * whole section, however, if the defender is the player.
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65 * Nothing happens (yet) to anyone just for hitting the player.
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66 */
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67 if (!def_player) {
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68 if (!thrown) { /* Some things require a direct hit. */
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69 /*
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70 * If the attacker hits a rusting monster, The weapon
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71 * may be damaged
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72 */
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73 if (on(*def, CANRUST) && weap &&
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74 weap->o_type != RELIC && (weap->o_flags & ISMETAL) &&
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75 !(weap->o_flags & ISPROT)) {
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76 if ((weap->o_hplus < 1 && weap->o_dplus < 1) ||
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77 roll(1,20) < weap->o_hplus+weap->o_dplus+10) {
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78 if (rnd(100) < 50) weap->o_hplus--;
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79 else weap->o_dplus--;
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80 if (att_player)
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81 msg(terse ? "Your %s weakens!"
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82 : "Your %s gets weaker!",
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83 weaps[weap->o_which].w_name);
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84 }
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85 }
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86 }
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87
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88 /* If the attacker hit something that shrieks, wake the dungeon */
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89 if (on(*def, CANSHRIEK)) {
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90 if (see_def)
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