Commit ee4f8cbb authored by Francois Gouget's avatar Francois Gouget Committed by Alexandre Julliard

user32: Fix a SetClipboardData() underflow and improve the tests.

A 0 or 1 byte Unicode string cannot be NUL terminated. That does stop Windows 10 and older from doing so which is why the 1 byte test must be skipped to avoid a crash in the 64-bit case. But in such cases SetClipboardData() fails on Windows 11 and so should Wine (instead of underflowing the buffer like Windows). Reorganize the test data by increasing size. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54192
parent 47d49274
......@@ -160,6 +160,7 @@ static HANDLE marshal_data( UINT format, HANDLE handle, size_t *ret_size )
WCHAR *ptr;
if (!(size = GlobalSize( handle ))) return 0;
if ((data_size_t)size != size) return 0;
if (size < sizeof(WCHAR)) return 0;
if (!(ptr = GlobalLock( handle ))) return 0;
ptr[(size + 1) / sizeof(WCHAR) - 1] = 0; /* enforce null-termination */
GlobalUnlock( handle );
......
......@@ -2217,35 +2217,39 @@ static const struct
UINT len;
} test_data[] =
{
{ "foo", {}, 3 }, /* 0 */
{ "foo", {}, 3 }, /* 0 */
{ "foo", {}, 4 },
{ "foo\0bar", {}, 7 },
{ "foo\0bar", {}, 8 },
{ "", {'f','o','o'}, 3 * sizeof(WCHAR) },
{ "", {'f','o','o',0}, 4 * sizeof(WCHAR) }, /* 5 */
{ "", {}, 0 },
{ "", {'f'}, 1 }, /* 5 */
{ "", {'f'}, 2 },
{ "", {'f','o','o'}, 5 },
{ "", {'f','o','o'}, 6 },
{ "", {'f','o','o',0}, 7 }, /* 10 */
{ "", {'f','o','o',0}, 8 },
{ "", {'f','o','o',0,'b'}, 9 },
{ "", {'f','o','o',0,'b','a','r'}, 7 * sizeof(WCHAR) },
{ "", {'f','o','o',0,'b','a','r',0}, 8 * sizeof(WCHAR) },
{ "", {'f','o','o'}, 1 },
{ "", {'f','o','o'}, 2 },
{ "", {'f','o','o'}, 5 }, /* 10 */
{ "", {'f','o','o',0}, 7 },
{ "", {'f','o','o',0}, 9 },
};
static void test_string_data(void)
{
UINT i;
BOOL r;
HANDLE data;
HANDLE data, clip;
char cmd[16];
char bufferA[12];
WCHAR bufferW[12];
for (i = 0; i < ARRAY_SIZE(test_data); i++)
{
/* 1-byte Unicode strings crash on Win64 */
#ifdef _WIN64
if (!test_data[i].strA[0] && test_data[i].len < sizeof(WCHAR)) continue;
/* Before Windows 11 1-byte Unicode strings crash on Win64
* because it underflows when 'appending' a 2 bytes NUL character!
*/
if (!test_data[i].strA[0] && test_data[i].len < sizeof(WCHAR) &&
strcmp(winetest_platform, "windows") == 0) continue;
#endif
winetest_push_context("%d", i);
r = open_clipboard( 0 );
......@@ -2265,11 +2269,17 @@ static void test_string_data(void)
else
{
memcpy( data, test_data[i].strW, test_data[i].len );
SetClipboardData( CF_UNICODETEXT, data );
memcpy( bufferW, test_data[i].strW, test_data[i].len );
bufferW[(test_data[i].len + 1) / sizeof(WCHAR) - 1] = 0;
ok( !memcmp( data, bufferW, test_data[i].len ),
"wrong data %s\n", wine_dbgstr_an( data, test_data[i].len ));
clip = SetClipboardData( CF_UNICODETEXT, data );
if (test_data[i].len >= sizeof(WCHAR))
{
ok( clip == data, "SetClipboardData() returned %p != %p\n", clip, data );
memcpy( bufferW, test_data[i].strW, test_data[i].len );
bufferW[(test_data[i].len + 1) / sizeof(WCHAR) - 1] = 0;
ok( !memcmp( data, bufferW, test_data[i].len ),
"wrong data %s\n", wine_dbgstr_an( data, test_data[i].len ));
}
else
ok( !clip || broken(clip != NULL), "expected SetClipboardData() to fail\n" );
}
r = CloseClipboard();
ok( r, "gle %ld\n", GetLastError() );
......@@ -2309,12 +2319,27 @@ static void test_string_data_process( int i )
else
{
data = GetClipboardData( CF_UNICODETEXT );
ok( data != 0, "could not get data\n" );
len = GlobalSize( data );
ok( len == test_data[i].len, "wrong size %u / %u\n", len, test_data[i].len );
memcpy( bufferW, test_data[i].strW, test_data[i].len );
bufferW[(test_data[i].len + 1) / sizeof(WCHAR) - 1] = 0;
ok( !memcmp( data, bufferW, len ), "wrong data %s\n", wine_dbgstr_an( data, len ));
if (!data)
{
ok( test_data[i].len < sizeof(WCHAR), "got no data for len=%d\n", test_data[i].len );
ok( !IsClipboardFormatAvailable( CF_UNICODETEXT ), "unicode available\n" );
}
else if (test_data[i].len == 0)
{
/* 0-byte string handling is broken on Windows <= 10 */
len = GlobalSize( data );
ok( broken(len == 1), "wrong size %u / 0\n", len );
ok( broken(*((char*)data) == 0), "wrong data %s\n", wine_dbgstr_an( data, len ));
}
else
{
len = GlobalSize( data );
ok( len == test_data[i].len, "wrong size %u / %u\n", len, test_data[i].len );
memcpy( bufferW, test_data[i].strW, test_data[i].len );
bufferW[(test_data[i].len + 1) / sizeof(WCHAR) - 1] = 0;
ok( !memcmp( data, bufferW, len ), "wrong data %s\n", wine_dbgstr_an( data, len ));
}
data = GetClipboardData( CF_TEXT );
if (test_data[i].len >= sizeof(WCHAR))
{
......@@ -2329,8 +2354,10 @@ static void test_string_data_process( int i )
}
else
{
BOOL available = IsClipboardFormatAvailable( CF_TEXT );
ok( !available || broken(available /* win10 */),
"available text %d\n", available );
ok( !data, "got data for empty string\n" );
ok( IsClipboardFormatAvailable( CF_TEXT ), "text not available\n" );
}
}
r = CloseClipboard();
......
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