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annotate rogue5/acinclude.m4 @ 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 f502bf60e6e4
children 029c1f5c5588
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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33
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
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1 AC_DEFUN([MP_WITH_CURSES],
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2 [AC_ARG_WITH(ncurses, [ --with-ncurses Force the use of ncurses over curses],,)
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3 mp_save_LIBS="$LIBS"
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4 CURSES_LIB=""
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5 if test "$with_ncurses" != yes
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6 then
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7 AC_CACHE_CHECK([for working curses], mp_cv_curses,
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8 [LIBS="$LIBS -lcurses"
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9 AC_TRY_LINK(
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10 [#include <curses.h>],
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11 [chtype a; int b=A_STANDOUT, c=KEY_LEFT; initscr(); ],
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12 mp_cv_curses=yes, mp_cv_curses=no)])
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13 if test "$mp_cv_curses" = yes
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14 then
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15 AC_DEFINE(HAVE_CURSES_H, 1, [Define to 1 if libcurses is requested])
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16 #AC_DEFINE(HAVE_CURSES_H)
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17 CURSES_LIB="-lcurses"
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18 fi
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19 fi
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20 if test ! "$CURSES_LIB"
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21 then
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22 AC_CACHE_CHECK([for working ncurses], mp_cv_ncurses,
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23 [LIBS="$mp_save_LIBS -lncurses"
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24 AC_TRY_LINK(
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25 [#include <ncurses.h>],
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26 [chtype a; int b=A_STANDOUT, c=KEY_LEFT; initscr(); ],
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27 mp_cv_ncurses=yes, mp_cv_ncurses=no)])
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28 if test "$mp_cv_ncurses" = yes
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29 then
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30 AC_DEFINE(HAVE_NCURSES_H, 1, [Define to 1 if libncurses is requested])
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31 CURSES_LIB="-lncurses"
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32 fi
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33 fi
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34 if test ! "$CURSES_LIB"
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35 then
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36 AC_CACHE_CHECK([for working pdcurses], mp_cv_pdcurses,
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37 [LIBS="$mp_save_LIBS -lpdcurses"
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38 AC_TRY_LINK(
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39 [#include <curses.h>],
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40 [chtype a; int b=A_STANDOUT, c=KEY_LEFT; initscr(); ],
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41 mp_cv_pdcurses=yes, mp_cv_pdcurses=no)])
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42 if test "$mp_cv_pdcurses" = yes
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43 then
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44 AC_DEFINE(HAVE_CURSES_H, 1, [Define to 1 if libcurses is requested])
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45 CURSES_LIB="-lpdcurses"
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46 fi
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47 fi
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48 if test ! "$CURSES_LIB"
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49 then
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50 AC_CACHE_CHECK([for working pdcur], mp_cv_pdcur,
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51 [LIBS="$mp_save_LIBS -lpdcur"
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52 AC_TRY_LINK(
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53 [#include <curses.h>],
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54 [chtype a; int b=A_STANDOUT, c=KEY_LEFT; initscr(); ],
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55 mp_cv_pdcur=yes, mp_cv_pdcur=no)])
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56 if test "$mp_cv_pdcur" = yes
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57 then
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58 AC_DEFINE(HAVE_CURSES_H, 1, [Define to 1 if libcurses is requested])
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59 CURSES_LIB="-lpdcur"
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60 fi
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61 fi
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62 if test ! "$CURSES_LIB"
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63 then
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64 AC_CACHE_CHECK([for working peer pdcurses], mp_cv_lpdcurses,
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65 [LIBS="$mp_save_LIBS ../pdcurses/pdcurses.a"
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66 AC_TRY_LINK(
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67 [#include "../pdcurses/curses.h"],
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68 [chtype a; int b=A_STANDOUT, c=KEY_LEFT; initscr(); ],
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69 mp_cv_lpdcurses=yes, mp_cv_lpdcurses=no)])
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70 if test "$mp_cv_lpdcurses" = yes
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71 then
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72 AC_DEFINE(HAVE_CURSES_H, 1, [Define to 1 if libcurses is requested])
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73 CURSES_LIB="../pdcurses/pdcurses.a"
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74 RF_ADDTO(CPPFLAGS,"-I../pdcurses")
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75 fi
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76 fi
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77 AC_CACHE_CHECK([for ESCDELAY variable],
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78 [mc_cv_ncurses_escdelay],
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79 [AC_TRY_LINK([], [
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80 extern int ESCDELAY;
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81 ESCDELAY = 0;
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82 ],
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83 [mc_cv_ncurses_escdelay=yes],
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84 [mc_cv_ncurses_escdelay=no])
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85 ])
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86 if test "$mc_cv_ncurses_escdelay" = yes; then
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87 AC_DEFINE(HAVE_ESCDELAY, 1,
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88 [Define if ncurses has ESCDELAY variable])
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89 fi
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90 if test ! "$CURSES_LIB" ; then
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91 LIBS="$mp_save_LIBS"
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92 fi
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93 ])dnl
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94
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95 dnl
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96 dnl RF_ADDTO(variable, value)
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97 dnl
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98 dnl Add value to variable
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99 dnl
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100 AC_DEFUN([RF_ADDTO],[
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101 if test "x$$1" = "x"; then
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102 test "x$silent" != "xyes" && echo " setting $1 to \"$2\""
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103 $1="$2"