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view rogue3/rogue.6.in @ 176:db1c9a21a7c3
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 | c191a735f811 |
| children |
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.TH ROGUE 6 .UC .SH NAME rogue \- Exploring The Dungeons of Doom .SH SYNOPSIS .B @PROGRAM@ [ -s ] [ .I save_file ] [ -n .I playername ] .SH DESCRIPTION .PP .I Rogue is a computer fantasy game with a new twist. It is crt oriented and the object of the game is to survive the attacks of various monsters and get a lot of gold, rather than the puzzle solving orientation of most computer fantasy games. .PP To get started you really only need to know two commands. The command .B ? will give you a list of the available commands and the command .B / will identify the things you see on the screen. .PP To win the game (as opposed to merely playing to beat other people's high scores) you must locate the Amulet of Yendor which is somewhere below the 20th level of the dungeon and get it out. Nobody has achieved this yet and if somebody does, they will probably go down in history as a hero among heros. .PP When the game ends, either by your death, when you quit, or if you (by some miracle) manage to win, .I rogue will give you a list of the top-ten scorers. The scoring is based entirely upon how much gold you get. There is a 10% penalty for getting yourself killed. .PP For more detailed directions, read the document .I "A Guide to the Dungeons of Doom." .SH OPTIONS .PP If a .I save_file argument is given, .I rogue will attempt to load a previously saved game from that file. .PP With the .B -n option, .I rogue will load a game with the name .I playername from a location defined at compile time. If no such game exists, it will start one. .PP The .B -s option prints the top-ten scores list and exits. .SH FILES .ta 2i @SCOREFILE@ Score file .br ~/rogue3.save Default save file .br @SAVEDIR@ System savefiles .DT .SH SEE ALSO Michael C. Toy, .I "A Guide to the Dungeons of Doom" .SH BUGS .PP Probably infinite. Currently known bugs are: Sometimes you are still hungry even after you eat food and sometimes you get a monster on the screen in reverse video which may or may not cause a core dump. .SH COPYRIGHT Rogue: Exploring the Dungeons of Doom .br Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman .br All rights reserved. .br License: 3-clause BSD, see LICENSE.txt for details.