Mercurial > hg > early-roguelike
annotate srogue/rdk.h @ 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 |
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date | Sun, 02 Aug 2015 12:14:47 -0400 |
parents | 2128c7dc8a40 |
children |
rev | line source |
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36
2128c7dc8a40
Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
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1 /* |
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Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
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2 * Super-Rogue |
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Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
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3 * Copyright (C) 1984 Robert D. Kindelberger |
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Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
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4 * All rights reserved. |
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Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
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5 * |
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Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
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6 * See the file LICENSE.TXT for full copyright and licensing information. |
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Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
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7 */ |
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Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
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8 |
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Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
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9 extern bool My_term, /* user specied terminal */ |
2128c7dc8a40
Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
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10 extern int _tty_ch; /* channel with tty on it */ |