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annotate arogue7/scrolls.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 0298a68cc179
children 1cd604c827a3
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1 /*
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2 * scrolls.c - Functions for dealing with scrolls
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985, 1986 Michael Morgan, Ken Dalka and AT&T
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6 * All rights reserved.
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7 *
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8 * Based on "Rogue: Exploring the Dungeons of Doom"
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9 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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10 * All rights reserved.
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11 *
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12 * See the file LICENSE.TXT for full copyright and licensing information.
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13 */
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14
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15 /*
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16 * Read a scroll and let it happen
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17 *
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18 */
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19
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20 #include "curses.h"
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b786053d2f37 arogue7: add missing header includes.
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21 #include <stdlib.h>
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22 #include <ctype.h>
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23 #include "rogue.h"
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24
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25 /*
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26 * let the hero get rid of some type of monster (but not a UNIQUE!)
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27 */
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28 genocide()
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29 {
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30 register struct linked_list *ip;
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31 register struct thing *mp;
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32 register struct linked_list *nip;
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33 register int num_monst = NUMMONST-NUMUNIQUE-1, /* cannot genocide uniques */
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34 pres_monst=1,
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35 num_lines=2*(lines-3);
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36 register int which_monst;
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37
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38 which_monst = makemonster(FALSE, "Genocide", "wipe out");
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39 if (which_monst <= 0) {
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40 msg("");
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41 return;
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42 }
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43
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44 /* Remove this monster from the present level */
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45 for (ip = mlist; ip; ip = nip) {
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46 mp = THINGPTR(ip);
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47 nip = next(ip);
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48 if (mp->t_index == which_monst) {
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49 killed(ip, FALSE, FALSE, TRUE);
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50 }
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51 }
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52
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53 /* Remove from available monsters */
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54 monsters[which_monst].m_normal = FALSE;
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55 monsters[which_monst].m_wander = FALSE;
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56 mpos = 0;
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57 msg("You have wiped out the %s.", monsters[which_monst].m_name);
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58 }
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59
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60 read_scroll(which, flag, is_scroll)
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61 register int which;
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62 int flag;
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63 bool is_scroll;
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64 {
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65 register struct object *obj, *nobj;
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66 register struct linked_list *item, *nitem;
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67 register int i,j;
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68 register char ch, nch;
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69 bool cursed, blessed;
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70
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71 blessed = FALSE;
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72 cursed = FALSE;
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73 item = NULL;
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74
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75 if (which < 0) {
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76 if (on(player, ISBLIND)) {
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77 msg("You can't see to read anything");
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78 return;
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79 }
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80 if (on(player, ISINWALL)) {
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81 msg("You can't see the scroll while inside rock!");
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82 return;
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83 }
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84
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85 /* This is a scroll or book. */
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86 if (player.t_action != C_READ) {
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87 int units;
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88
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89 item = get_item(pack, "read", READABLE, FALSE, FALSE);
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90
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91 /*