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annotate arogue5/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 c49f7927b0fa
children 56e748983fa8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Draw the nine rooms on the screen
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985 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 #include "curses.h"
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16 #include "rogue.h"
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c49f7927b0fa arogue5: add missing header files.
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17 #include <stdlib.h>
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18
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19 do_rooms()
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20 {
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21 register int i;
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22 register struct room *rp;
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23 register struct linked_list *item;
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24 register struct thing *tp;
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25 register int left_out;
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26 coord top;
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27 coord bsze;
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28 coord mp;
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29
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30 /*
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31 * bsze is the maximum room size
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32 */
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33 bsze.x = COLS/3;
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34 bsze.y = (LINES-2)/3;
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35 /*
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36 * Clear things for a new level
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37 */
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38 for (rp = rooms; rp < &rooms[MAXROOMS]; rp++) {
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39 rp->r_flags = 0;
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40 rp->r_fires = NULL;
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41 }
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42 /*
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43 * Put the gone rooms, if any, on the level
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44 */
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45 left_out = rnd(4);
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46 for (i = 0; i < left_out; i++)
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47 rooms[rnd_room()].r_flags |= ISGONE;
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48 /*
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49 * dig and populate all the rooms on the level
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50 */
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51 for (i = 0, rp = rooms; i < MAXROOMS; rp++, i++)
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52 {
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53 bool has_gold=FALSE;
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54
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55 /*
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56 * Find upper left corner of box that this room goes in
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57 */
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58 top.x = (i%3)*bsze.x;
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59 top.y = i/3*bsze.y + 1;
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60 if (rp->r_flags & ISGONE)
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61 {
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62 /*
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63 * Place a gone room. Make certain that there is a blank line
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64 * for passage drawing.
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65 */
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66 do
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67 {
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68 rp->r_pos.x = top.x + rnd(bsze.x-2) + 1;
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69 rp->r_pos.y = top.y + rnd(bsze.y-2) + 1;
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70 rp->r_max.x = -COLS;
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71 rp->r_max.x = -LINES;
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72 } until(rp->r_pos.y > 0 && rp->r_pos.y < LINES-2);
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73 continue;
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74 }
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75 if (rnd(10) < level-1)
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76 rp->r_flags |= ISDARK;
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77 /*
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78 * Find a place and size for a random room
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79 */
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80 do
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81 {
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82 rp->r_max.x = rnd(bsze.x - 4) + 4;
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83 rp->r_max.y = rnd(bsze.y - 4) + 4;
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84 rp->r_pos.x = top.x + rnd(bsze.x - rp->r_max.x);
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85 rp->r_pos.y = top.y + rnd(bsze.y - rp->r_max.y);
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86 } until (rp->r_pos.y != 0);
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87
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88 /* Draw the room */
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89 draw_room(rp);
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90
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91 /*
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92 * Put the gold in
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93 */
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94 if (rnd(100) < 50 && level >= cur_max)
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95 {
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96 register struct linked_list *item;
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97 register struct object *cur;
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98 coord tp;
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99
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100 has_gold = TRUE; /* This room has gold in it */
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101
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102 item = spec_item(GOLD, NULL, NULL, NULL);
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103 cur = OBJPTR(item);
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104
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