warden/early-roguelike
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Advanced Rogue family: fix some potential buffer overflows.

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Some code for determining the score file location assumed that PATH_MAX
would be less than 1024, which cannot be guaranteed.

Advanced Rogue 5 and 7, and XRogue, have had the buffers for the file
name enlarged.  UltraRogue never called the functions, so the code has
been deleted instead.
This commit is contained in:
John "Elwin" Edwards 2021-05-03 19:05:37 -04:00
parent 2b6d8bcb77
commit 3dfd8fd09b
13 changed files with 51 additions and 78 deletions
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15
arogue7/mdport.c
View file

@ -421,7 +421,7 @@ directory_exists(char *dirname)
char *
md_getroguedir(void)
{
static char path[1024];
static char path[PATH_MAX-20];
char *end,*home;
if ( (home = getenv("ROGUEHOME")) != NULL)
@ -430,13 +430,16 @@ md_getroguedir(void)
{
strncpy(path, home, PATH_MAX - 20);
end = &path[strlen(path)-1];
if (path[PATH_MAX-21] == '\0')
{
end = &path[strlen(path)-1];
while( (end >= path) && ((*end == '/') || (*end == '\\')))
*end-- = '\0';
while( (end >= path) && ((*end == '/') || (*end == '\\')))
*end-- = '\0';
if (directory_exists(path))
return(path);
if (directory_exists(path))
return(path);
}
}
}