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annotate rogue3/io.c @ 310:827441d05b3e

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Advanced Rogue family: fix some potential buffer overflows. Some code for determining the score file location assumed that PATH_MAX would be less than 1024, which cannot be guaranteed. Advanced Rogue 5 and 7, and XRogue, have had the buffers for the file name enlarged. UltraRogue never called the functions, so the code has been deleted instead.
author John "Elwin" Edwards
date Mon, 03 May 2021 19:05:37 -0400
parents 527e2150eaf0
children
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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 3.10 (Berkeley) 6/15/81
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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 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 <stdlib.h>
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14 #include "curses.h"
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15 #include <ctype.h>
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16 #include <stdarg.h>
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17 #include <string.h>
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18 #include "machdep.h"
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19 #include "rogue.h"
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20
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21 /*
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22 * msg:
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23 * Display a message at the top of the screen.
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24 */
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25
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26 static char msgbuf[BUFSIZ];
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27 static int newpos = 0;
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28
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29 /*VARARGS1*/
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30 void
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31 msg(char *fmt, ...)
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32 {
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33 va_list ap;
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34 /*
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35 * if the string is "", just clear the line
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36 */
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37 if (*fmt == '\0')
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38 {
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39 wmove(cw, 0, 0);
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40 wclrtoeol(cw);
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41 mpos = 0;
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42 return;
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43 }
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44 /*
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45 * otherwise add to the message and flush it out
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46 */
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47 va_start(ap, fmt);
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48 doadd(fmt, ap);
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49 va_end(ap);
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50 endmsg();
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51 }
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52
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53 /*
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54 * add things to the current message
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55 */
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56 void
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57 addmsg(char *fmt, ...)
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58 {
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59 va_list ap;
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60
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61 va_start(ap, fmt);
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62 doadd(fmt, ap);
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63 va_end(ap);
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64 }
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65
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66 /*
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67 * Display a new msg (giving him a chance to see the previous one if it
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68 * is up there with the --More--)
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69 */
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70 void
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71 endmsg()
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72 {
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73 strncpy(huh, msgbuf, 80);
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74 huh[79] = 0;
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75
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76 if (mpos)
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77 {
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78 wmove(cw, 0, mpos);
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79 waddstr(cw, "--More--");
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80 draw(cw);
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81 wait_for(cw,' ');
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82 }
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83 mvwaddstr(cw, 0, 0, msgbuf);
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84 wclrtoeol(cw);
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85 mpos = newpos;
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86 newpos = 0;
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87 draw(cw);
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88 }
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89
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90 void
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91 doadd(char *fmt, va_list ap)
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92 {
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93 vsprintf(&msgbuf[newpos], fmt, ap);
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94 newpos = (int) strlen(msgbuf);
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95 }
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96
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97 /*
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98 * step_ok:
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99 * returns true if it is ok to step on ch
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100 */
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101
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102 int
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103 step_ok(int ch)
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104 {
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105 switch (ch)
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106 {
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107 case ' ':
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108 case '|':
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