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- Do not depend on paths returned by FileNameInformation requests to be NULL terminated.

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svn path=/trunk/; revision=10677
This commit is contained in:
Filip Navara 2004-08-25 15:04:19 +00:00
parent e877ccfb63
commit b8648c7bf4
1 changed files with 13 additions and 9 deletions
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22
reactos/lib/ntdll/rtl/path.c
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@ -1,4 +1,4 @@
/* $Id: path.c,v 1.28 2004/05/13 21:01:14 navaraf Exp $
/* $Id: path.c,v 1.29 2004/08/25 15:04:19 navaraf Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
@ -373,7 +373,7 @@ RtlSetCurrentDirectory_U(PUNICODE_STRING name)
PWSTR buf = 0;
PFILE_NAME_INFORMATION filenameinfo;
ULONG backslashcount = 0;
PWSTR cntr;
ULONG Index;
WCHAR var[4];
DPRINT ("RtlSetCurrentDirectory %wZ\n", name);
@ -436,7 +436,7 @@ RtlSetCurrentDirectory_U(PUNICODE_STRING name)
RtlReleasePebLock ();
return Status;
}
filenameinfo = RtlAllocateHeap(RtlGetProcessHeap(),
0,
MAX_PATH*sizeof(WCHAR)+sizeof(ULONG));
@ -461,7 +461,8 @@ RtlSetCurrentDirectory_U(PUNICODE_STRING name)
return(Status);
}
if (filenameinfo->FileName[1]) // If it's just "\", we need special handling
/* If it's just "\", we need special handling */
if (filenameinfo->FileNameLength > sizeof(WCHAR))
{
wcs = buf + size / sizeof(WCHAR) - 1;
if (*wcs == L'\\')
@ -471,9 +472,11 @@ RtlSetCurrentDirectory_U(PUNICODE_STRING name)
size -= sizeof(WCHAR);
}
for (cntr=filenameinfo->FileName;*cntr!=0;cntr++)
for (Index = 0;
Index < filenameinfo->FileNameLength / sizeof(WCHAR);
Index++)
{
if (*cntr=='\\') backslashcount++;
if (filenameinfo->FileName[Index] == '\\') backslashcount++;
}
DPRINT("%d \n",backslashcount);
@ -483,9 +486,10 @@ RtlSetCurrentDirectory_U(PUNICODE_STRING name)
}
wcs++;
wcscpy(wcs,filenameinfo->FileName);
RtlCopyMemory(wcs, filenameinfo->FileName, filenameinfo->FileNameLength);
wcs[filenameinfo->FileNameLength / sizeof(WCHAR)] = 0;
size=((wcs-buf)+wcslen(filenameinfo->FileName))*sizeof(WCHAR);
size = (wcs - buf) * sizeof(WCHAR) + filenameinfo->FileNameLength;
}
RtlFreeHeap (RtlGetProcessHeap (),
@ -505,7 +509,7 @@ RtlSetCurrentDirectory_U(PUNICODE_STRING name)
buf,
size + sizeof(WCHAR));
cd->DosPath.Length = size;
if (cd->Handle)
NtClose(cd->Handle);
cd->Handle = handle;