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annotate xrogue/rooms.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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rev   line source
133
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1 /*
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2 rooms.c - Draw the nine rooms on the screen
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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 <stdlib.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 do_rooms()
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24 {
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25 register int i;
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26 register struct room *rp;
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27 register struct linked_list *item;
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28 register struct thing *tp;
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29 int left_out;
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30 int num_monsters;
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31 int which_monster;
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32 int j;
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33 coord top;
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34 coord bsze;
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35 coord mp;
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36 coord *np;
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37
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38 /*
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39 * bsze is the maximum room size
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40 */
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41 bsze.x = cols/3;
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42 bsze.y = (lines-2)/3;
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43 /*
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44 * Clear things for a new level
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45 */
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46 for (rp = rooms; rp < &rooms[MAXROOMS]; rp++) {
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47 rp->r_flags = 0;
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48 _r_free_fire_list(&rp->r_fires);
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49 }
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50 /*
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51 * Put the gone rooms, if any, on the level
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52 */
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53 left_out = rnd(4);
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54 for (i = 0; i < left_out; i++)
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55 rooms[rnd_room()].r_flags |= ISGONE;
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56 /*
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57 * dig and populate all the rooms on the level
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58 */
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59 for (i = 0, rp = rooms; i < MAXROOMS; rp++, i++)
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60 {
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61 bool has_gold=FALSE;
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62
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63 /*
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64 * Find upper left corner of box that this room goes in
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65 */
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66 top.x = (i%3)*bsze.x;
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67 top.y = i/3*bsze.y + 1;
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68 if (rp->r_flags & ISGONE)
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69 {
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70 /*
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71 * Place a gone room. Make certain that there is a blank line
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72 * for passage drawing.
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73 */
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74 do
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75 {
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76 rp->r_pos.x = top.x + rnd(bsze.x-2) + 1;
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77 rp->r_pos.y = top.y + rnd(bsze.y-2) + 1;
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78 rp->r_max.x = -cols;
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79 rp->r_max.y = -lines;
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80 } until(rp->r_pos.y > 0 && rp->r_pos.y < lines-2);
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81 continue;
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82 }
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83 if (rnd(10) < level-1)
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84 rp->r_flags |= ISDARK;
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85 /*
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86 * Find a place and size for a random room
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87 */
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88 do
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89 {
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90 rp->r_max.x = rnd(bsze.x - 4) + 4;
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91 rp->r_max.y = rnd(bsze.y - 4) + 4;
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92 rp->r_pos.x = top.x + rnd(bsze.x - rp->r_max.x);
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