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annotate arogue7/io.c @ 144:708bb2dea17c

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arogue7, xrogue: prevent potential NULL dereferencing. It is possible for getpwuid() to fail and return NULL. Various md_get* functions now check for this.
author John "Elwin" Edwards
date Mon, 18 May 2015 10:53:22 -0400
parents b786053d2f37
children f9ef86cf22b2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * io.c - Various input/output functions
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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 * Various input/output functions
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17 */
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18
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19 #include "curses.h"
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20 #include <stdarg.h>
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21 #include <ctype.h>
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b786053d2f37 arogue7: add missing header includes.
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22 #include <string.h>
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23 #include "rogue.h"
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24
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25 /*
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26 * msg:
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27 * Display a message at the top of the screen.
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28 */
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29
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30 static char msgbuf[BUFSIZ];
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31 static int newpos = 0;
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32
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33 /*VARARGS1*/
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34 msg(char *fmt, ...)
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35 {
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36 va_list ap;
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37 /*
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38 * if the string is "", just clear the line
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39 */
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40 if (*fmt == '\0')
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41 {
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42 overwrite(cw,msgw);
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43 wmove(msgw, 0, 0);
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44 clearok(msgw, FALSE);
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45 draw(msgw);
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46 mpos = 0;
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47 return;
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48 }
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49 /*
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50 * otherwise add to the message and flush it out
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51 */
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52 va_start(ap,fmt);
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53 doadd(fmt, ap);
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54 va_end(ap);
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55 endmsg();
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56 }
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57
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58 /*
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59 * add things to the current message
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60 */
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61 addmsg(char *fmt, ...)
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62 {
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63 va_list ap;
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64
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65 va_start(ap, fmt);
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66 doadd(fmt, ap);
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67 va_end(ap);
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68 }
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69
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70 /*
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71 * Display a new msg (giving him a chance to see the previous one if it
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72 * is up there with the --More--)
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73 */
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74 endmsg()
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75 {
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76 /* Needed to track where we are for 5.0 (PC) curses */
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77 register int x, y;
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78
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79 strcpy(huh, msgbuf);
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80 if (mpos) {
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81 /*
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82 * If this message will fit on the line (plus space for --More--
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83 * then just add it (only during combat).
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84 */
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85 if (player.t_quiet < 0 && mpos + newpos + strlen(morestr) + 2 < cols) {
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86 wmove(msgw, 0, mpos + 2);
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87 newpos += mpos + 2;
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88 }
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89 else {
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90 wmove(msgw, 0, mpos);
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91 waddstr(msgw, morestr);
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92 draw(cw);
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93 draw(msgw);
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