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annotate arogue5/mdport.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 600873555ec0
children 80a590e67206
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1 /*
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2 mdport.c - Machine Dependent Code for Porting Unix/Curses games
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3
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4 Copyright (C) 2005 Nicholas J. Kisseberth
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5 All rights reserved.
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6
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7 Redistribution and use in source and binary forms, with or without
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8 modification, are permitted provided that the following conditions
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9 are met:
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10 1. Redistributions of source code must retain the above copyright
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11 notice, this list of conditions and the following disclaimer.
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12 2. Redistributions in binary form must reproduce the above copyright
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13 notice, this list of conditions and the following disclaimer in the
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14 documentation and/or other materials provided with the distribution.
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15 3. Neither the name(s) of the author(s) nor the names of other contributors
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16 may be used to endorse or promote products derived from this software
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17 without specific prior written permission.
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18
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19 THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
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20 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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22 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
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23 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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24 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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25 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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26 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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27 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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28 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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29 SUCH DAMAGE.
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30 */
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31
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32 #ifdef HAVE_CONFIG_H
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33 #include "config.h"
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34 #endif
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35
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36 #if defined(_WIN32)
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37 #include <Windows.h>
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38 #include <Lmcons.h>
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39 #include <process.h>
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40 #include <shlobj.h>
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41 #include <sys/types.h>
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42 #undef MOUSE_MOVED
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43 #elif defined(__DJGPP__)
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44 #include <process.h>
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45 #endif
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46
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47 #ifdef HAVE_PWD_H
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48 #include <pwd.h>
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49 #endif
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50 #ifdef HAVE_SYS_UTSNAME_H
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51 #include <sys/utsname.h>
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52 #endif
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53 #ifdef HAVE_UNISTD_H
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54 #include <unistd.h>
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55 #endif
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56
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57 #include <stdlib.h>
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58 #include <string.h>
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59
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60 #if defined(_WIN32) && !defined(__MINGW32__)
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61 #define PATH_MAX MAX_PATH
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62 #endif
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63
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64 #include <curses.h>
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65
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66 #if defined(HAVE_TERM_H)
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67 #include <term.h>
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68 #elif defined(HAVE_NCURSES_TERM_H)
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69 #include <ncurses/term.h>
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70 #endif
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71
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72 #include <stdio.h>
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73 #include <fcntl.h>
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74 #include <limits.h>
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75 #include <sys/stat.h>
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76 #include <signal.h>
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77
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78 #define MOD_MOVE(c) (toupper(c) )
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79
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80 void
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81 md_init()
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82 {
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83 #ifdef __INTERIX
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84 char *term;
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85
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86 term = getenv("TERM");
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87
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88 if (term == NULL)
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89 setenv("TERM","interix");
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90 #endif
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91 #if defined(__DJGPP__) || defined(_WIN32)
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92 _fmode = _O_BINARY;
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93 #endif
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94 #if defined(__CYGWIN__) || defined(__MSYS__)
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95 ESCDELAY=250;
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96 #endif
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97 }
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98
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