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Rewrote directory creation function for Windows

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Previous implementation had several security issues
https://forum.zdoom.org/viewtopic.php?t=56622
This commit is contained in:
alexey.lysiuk 2017-05-29 12:20:30 +03:00
parent b7295775b9
commit 0f936f39d8
1 changed files with 38 additions and 9 deletions
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47
src/cmdlib.cpp
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@ -477,16 +477,45 @@ const char *myasctime ()
void DoCreatePath(const char *fn)
{
char drive[_MAX_DRIVE];
char path[PATH_MAX];
char p[PATH_MAX];
int i;
char dir[_MAX_DIR];
_splitpath_s(fn, drive, sizeof drive, dir, sizeof dir, nullptr, 0, nullptr, 0);
_splitpath(fn,drive,path,NULL,NULL);
_makepath(p,drive,path,NULL,NULL);
i=(int)strlen(p);
if (p[i-1]=='/' || p[i-1]=='\\') p[i-1]=0;
if (*path) DoCreatePath(p);
_mkdir(p);
if ('\0' == *dir)
{
// Root/current/parent directory always exists
return;
}
char path[PATH_MAX];
_makepath_s(path, sizeof path, drive, dir, nullptr, nullptr);
if ('\0' == *path)
{
// No need to process empty relative path
return;
}
// Remove trailing path separator(s)
for (size_t i = strlen(path); 0 != i; --i)
{
char& lastchar = path[i - 1];
if ('/' == lastchar || '\\' == lastchar)
{
lastchar = '\0';
}
else
{
break;
}
}
// Create all directories for given path
if ('\0' != *path)
{
DoCreatePath(path);
_mkdir(path);
}
}
void CreatePath(const char *fn)