Mercurial > hg > early-roguelike
annotate rogue4/io.c @ 83:09db0cf536af
Properly handle invalid room references in savefiles.
In all games, rs_write_room_reference() stored -1 for a nonexistent
room, but rs_read_room_reference() did not check for out-of-bounds
values, leading to pointers to rooms[-1], which sometimes caused
crashes. rs_read_room_reference() has now been modified to use NULL
instead.
Some of the games required further changes to replace NULL with the
pointer to the actual room. Others are capable of handling NULL for
objects not in any room.
author | John "Elwin" Edwards |
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date | Thu, 08 Aug 2013 12:41:35 -0700 |
parents | 9535a08ddc39 |
children | 1b73a8641b37 |
rev | line source |
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12
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1 /* |
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2 * Various input/output functions |
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3 * |
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4 * @(#)io.c 4.13 (Berkeley) 2/25/82 |
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5 * |
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6 * Rogue: Exploring the Dungeons of Doom |
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7 * Copyright (C) 1980, 1981, 1982 Michael Toy, Ken Arnold and Glenn Wichman |
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8 * All rights reserved. |
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9 * |
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10 * See the file LICENSE.TXT for full copyright and licensing information. |
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11 */ |
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12 |
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13 #include <curses.h> |
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14 #include <ctype.h> |
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15 #include <string.h> |
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16 #include "rogue.h" |
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17 #include <stdarg.h> |
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18 |
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19 /* |
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20 * msg: |
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21 * Display a message at the top of the screen. |
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22 */ |
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23 static char msgbuf[BUFSIZ]; |
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24 static int newpos = 0; |
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25 |
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26 msg(char *fmt, ...) |
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27 { |
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28 va_list ap; |
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29 /* |
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30 * if the string is "", just clear the line |
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31 */ |
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32 if (*fmt == '\0') |
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33 { |
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34 move(0, 0); |
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35 clrtoeol(); |
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36 mpos = 0; |
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37 return; |
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38 } |
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39 /* |
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40 * otherwise add to the message and flush it out |
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41 */ |
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42 va_start(ap,fmt); |
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43 doadd(fmt, ap); |
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44 va_end(ap); |
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45 endmsg(); |
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46 } |
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47 |
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48 /* |
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49 * addmsg: |
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50 * Add things to the current message |
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51 */ |
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52 |
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53 addmsg(char *fmt, ...) |
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54 { |
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55 va_list ap; |
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56 |
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57 va_start(ap, fmt); |
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58 doadd(fmt, ap); |
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59 va_end(ap); |
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60 } |
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61 |
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62 /* |
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63 * endmsg: |
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64 * Display a new msg (giving him a chance to see the previous one |
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65 * if it is up there with the --More--) |
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66 */ |
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67 |
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68 endmsg() |
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69 { |
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70 if (save_msg) |
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71 { |
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72 strncpy(huh, msgbuf, 80); |
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73 huh[79] = 0; |
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74 } |
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75 |
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76 if (mpos) |
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77 { |
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78 look(FALSE); |
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79 move(0, mpos); |
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80 addstr("--More--"); |
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81 refresh(); |
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82 wait_for(' '); |
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83 } |
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84 /* |
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85 * All messages should start with uppercase, except ones that |
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86 * start with a pack addressing character |
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87 */ |
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88 if (islower(msgbuf[0]) && msgbuf[1] != ')') |
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89 msgbuf[0] = toupper(msgbuf[0]); |
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90 mvaddstr(0, 0, msgbuf); |
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91 clrtoeol(); |
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92 mpos = newpos; |
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93 newpos = 0; |
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94 refresh(); |
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95 } |
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96 |
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97 /* |
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98 * doadd: |
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99 * Perform an add onto the message buffer |
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100 */ |
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101 |
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102 doadd(char *fmt, va_list ap) |
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103 { |
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104 vsprintf(&msgbuf[newpos], fmt, ap); |
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105 newpos = strlen(msgbuf); |
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106 } |
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107 |