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annotate srogue/potions.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 3aa87373c908
children 94a0d9dd5ce1
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36
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1 /*
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2 * Functions for dealing with potions
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3 *
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4 * @(#)potions.c 9.0 (rdk) 7/17/84
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5 *
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6 * Super-Rogue
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7 * Copyright (C) 1984 Robert D. Kindelberger
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8 * All rights reserved.
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9 *
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10 * Based on "Rogue: Exploring the Dungeons of Doom"
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11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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12 * All rights reserved.
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13 *
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14 * See the file LICENSE.TXT for full copyright and licensing information.
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15 */
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16
60
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17 #include <stdlib.h>
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18 #include <string.h>
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19 #include "rogue.h"
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20 #include "rogue.ext"
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21
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22 /*
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23 * quaff:
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24 * Let the hero drink a potion
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25 */
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26 quaff()
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27 {
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28 reg struct object *obj;
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29 reg struct linked_list *item, *titem;
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30 reg struct thing *th;
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31 reg int wh;
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32 char buf[LINLEN];
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33 bool bless, curse;
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34
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35 /*
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36 * Make certain that it is somethings that we want to drink
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37 */
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38 if ((item = get_item("quaff", POTION)) == NULL)
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39 return;
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40 obj = OBJPTR(item);
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41 if (obj->o_type != POTION) {
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42 msg("That's undrinkable!");
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43 after = FALSE;
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44 return;
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45 }
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46 wh = obj->o_which;
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47 bless = o_on(obj, ISBLESS);
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48 curse = o_on(obj, ISCURSED);
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49 del_pack(item); /* get rid of it */
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50
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51 /*
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52 * Calculate the effect it has on the poor guy.
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53 */
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54 switch(wh) {
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55 case P_CONFUSE:
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56 if (!bless) {
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57 if (pl_on(ISINVINC))
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58 msg("You remain level-headed.");
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59 else {
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60 chg_abil(WIS,-1,TRUE); /* confuse his mind */
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61 if (pl_off(ISHUH)) {
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62 msg("Wait, what's going on here. Huh? What? Who?");
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63 if (pl_on(ISHUH))
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64 lengthen(unconfuse,rnd(8)+HUHDURATION);
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65 else
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66 fuse(unconfuse,TRUE,rnd(8)+HUHDURATION);
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67 player.t_flags |= ISHUH;
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68 }
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69 }
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70 p_know[P_CONFUSE] = TRUE;
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71 }
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72 when P_POISON:
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73 if (!bless) {
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74 if (pl_off(ISINVINC) && !iswearing(R_SUSTSTR) &&
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75 !iswearing(R_SUSAB)) {
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76 chg_abil(CON,-1,TRUE);
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77 chg_abil(STR,-(rnd(3)+1),TRUE);
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78 msg("You feel very sick now.");
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79 }
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80 else
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81 msg("You feel momentarily sick.");
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82 p_know[P_POISON] = TRUE;
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83 }
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84 when P_HEALING:
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85 if (!curse) {
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86 heal_self(4, TRUE);
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87 msg("You begin to feel better.");
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88 if (!iswearing(R_SLOW))
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89 notslow(FALSE);
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90 sight(FALSE);
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91 p_know[P_HEALING] = TRUE;
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92 }
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93 when P_STRENGTH:
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94 if (!curse) {
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95 msg("You feel stronger, now. What bulging muscles!");
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96 chg_abil(STR,1,TRUE);
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97 p_know[P_STRENGTH] = TRUE;
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98 }
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99 when P_MFIND:
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100 /*
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101 * Potion of monster detection - find all monsters
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102 */
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103 if (mlist != NULL && !curse) {
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104 dispmons();
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