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mf: Fix string array access for registration data helpers. 

Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Nikolay Sivov 2020-03-25 15:01:24 +03:00 committed by Alexandre Julliard
parent e121a55293
commit d0f4487c61
1 changed files with 9 additions and 8 deletions
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17
dlls/mf/main.c
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@ -1090,7 +1090,7 @@ BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved)
return TRUE;
}
static HRESULT prop_string_vector_append(PROPVARIANT *vector, unsigned int *count, BOOL unique, const WCHAR *str)
static HRESULT prop_string_vector_append(PROPVARIANT *vector, unsigned int *capacity, BOOL unique, const WCHAR *str)
{
WCHAR *ptrW;
int len, i;
@ -1104,17 +1104,17 @@ static HRESULT prop_string_vector_append(PROPVARIANT *vector, unsigned int *coun
}
}
if (!vector->calpwstr.cElems || *count > vector->calpwstr.cElems - 1)
if (!*capacity || *capacity - 1 < vector->calpwstr.cElems)
{
unsigned int new_count;
WCHAR **ptr;
new_count = *count ? *count * 2 : 10;
new_count = *capacity ? *capacity * 2 : 10;
ptr = CoTaskMemRealloc(vector->calpwstr.pElems, new_count * sizeof(*vector->calpwstr.pElems));
if (!ptr)
return E_OUTOFMEMORY;
vector->calpwstr.pElems = ptr;
*count = new_count;
*capacity = new_count;
}
len = lstrlenW(str);
@ -1129,12 +1129,14 @@ static HRESULT prop_string_vector_append(PROPVARIANT *vector, unsigned int *coun
static int __cdecl qsort_string_compare(const void *a, const void *b)
{
return lstrcmpW(a, b);
const WCHAR *left = *(const WCHAR **)a, *right = *(const WCHAR **)b;
return lstrcmpW(left, right);
}
static HRESULT mf_get_handler_strings(const WCHAR *path, WCHAR filter, unsigned int maxlen, PROPVARIANT *dst)
{
static const HKEY hkey_roots[2] = { HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE };
unsigned int capacity = 0, count, size;
HRESULT hr = S_OK;
int i, index;
WCHAR *buffW;
@ -1148,8 +1150,6 @@ static HRESULT mf_get_handler_strings(const WCHAR *path, WCHAR filter, unsigned
for (i = 0; i < ARRAY_SIZE(hkey_roots); ++i)
{
unsigned int count;
DWORD size;
HKEY hkey;
if (RegOpenKeyW(hkey_roots[i], path, &hkey))
@ -1162,7 +1162,8 @@ static HRESULT mf_get_handler_strings(const WCHAR *path, WCHAR filter, unsigned
{
if (filter && !wcschr(buffW, filter))
continue;
if (FAILED(hr = prop_string_vector_append(dst, &count, i > 0, buffW)))
if (FAILED(hr = prop_string_vector_append(dst, &capacity, i > 0, buffW)))
break;
size = maxlen;
}