Stefan Dösinger : ddraw: Don' t read past the end of the executebuffer.
Module: wine Branch: master Commit: 02f7b097b42553a1886610be6aa84959d25e00b0 URL: https://source.winehq.org/git/wine.git/?a=commit;h=02f7b097b42553a1886610be6... Author: Stefan Dösinger <stefan(a)codeweavers.com> Date: Thu Apr 5 12:59:14 2018 +0200 ddraw: Don't read past the end of the executebuffer. Signed-off-by: Stefan Dösinger <stefan(a)codeweavers.com> Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com> Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/ddraw/executebuffer.c | 10 ++-- dlls/ddraw/tests/ddraw1.c | 127 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 134 insertions(+), 3 deletions(-) diff --git a/dlls/ddraw/executebuffer.c b/dlls/ddraw/executebuffer.c index 89d9ed3..b20b9ed 100644 --- a/dlls/ddraw/executebuffer.c +++ b/dlls/ddraw/executebuffer.c @@ -607,6 +607,7 @@ static HRESULT WINAPI d3d_execute_buffer_SetExecuteData(IDirect3DExecuteBuffer * struct wined3d_map_desc map_desc; struct wined3d_box box = {0}; HRESULT hr; + DWORD buf_size = buffer->desc.dwBufferSize, copy_size; TRACE("iface %p, data %p.\n", iface, data); @@ -662,7 +663,7 @@ static HRESULT WINAPI d3d_execute_buffer_SetExecuteData(IDirect3DExecuteBuffer * buffer->src_vertex_pos = 0; } - if (data->dwVertexCount) + if (data->dwVertexCount && (!buf_size || data->dwVertexOffset < buf_size)) { box.left = buffer->src_vertex_pos * sizeof(D3DVERTEX); box.right = box.left + data->dwVertexCount * sizeof(D3DVERTEX); @@ -670,8 +671,11 @@ static HRESULT WINAPI d3d_execute_buffer_SetExecuteData(IDirect3DExecuteBuffer * 0, &map_desc, &box, WINED3D_MAP_WRITE))) return hr; - memcpy(map_desc.data, ((BYTE *)buffer->desc.lpData) + data->dwVertexOffset, - data->dwVertexCount * sizeof(D3DVERTEX)); + copy_size = data->dwVertexCount * sizeof(D3DVERTEX); + if (buf_size) + copy_size = min(copy_size, buf_size - data->dwVertexOffset); + + memcpy(map_desc.data, ((BYTE *)buffer->desc.lpData) + data->dwVertexOffset, copy_size); wined3d_resource_unmap(wined3d_buffer_get_resource(buffer->src_vertex_buffer), 0); } diff --git a/dlls/ddraw/tests/ddraw1.c b/dlls/ddraw/tests/ddraw1.c index 626b07b..c63ddee 100644 --- a/dlls/ddraw/tests/ddraw1.c +++ b/dlls/ddraw/tests/ddraw1.c @@ -11247,6 +11247,132 @@ static void test_enum_surfaces(void) IDirectDraw_Release(ddraw); } +static void test_execute_data(void) +{ + IDirect3DExecuteBuffer *execute_buffer; + D3DEXECUTEBUFFERDESC exec_desc; + IDirect3DDevice *device; + IDirectDraw *ddraw; + HWND window; + HRESULT hr; + D3DEXECUTEDATA exec_data; + + window = create_window(); + ddraw = create_ddraw(); + ok(!!ddraw, "Failed to create a ddraw object.\n"); + if (!(device = create_device(ddraw, window, DDSCL_NORMAL))) + { + skip("Failed to create a 3D device, skipping test.\n"); + IDirectDraw_Release(ddraw); + DestroyWindow(window); + return; + } + + memset(&exec_desc, 0, sizeof(exec_desc)); + exec_desc.dwSize = sizeof(exec_desc); + exec_desc.dwFlags = D3DDEB_BUFSIZE | D3DDEB_CAPS; + exec_desc.dwBufferSize = 1024; + exec_desc.dwCaps = D3DDEBCAPS_SYSTEMMEMORY; + + hr = IDirect3DDevice_CreateExecuteBuffer(device, &exec_desc, &execute_buffer, NULL); + ok(SUCCEEDED(hr), "Failed to create execute buffer, hr %#x.\n", hr); + + memset(&exec_data, 0, sizeof(exec_data)); + + /* Success case. */ + exec_data.dwSize = sizeof(exec_data); + exec_data.dwVertexCount = 3; + exec_data.dwInstructionOffset = 3 * sizeof(D3DVERTEX); + exec_data.dwInstructionLength = 10; + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to set execute data, hr %#x.\n", hr); + + /* dwSize is checked against the expected struct size. */ + exec_data.dwSize = sizeof(exec_data) - 1; + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(hr == DDERR_INVALIDPARAMS, "Got unexpected hr %#x.\n", hr); + exec_data.dwSize = sizeof(exec_data) + 1; + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(hr == DDERR_INVALIDPARAMS, "Got unexpected hr %#x.\n", hr); + + /* The rest of the data is not checked for plausibility. */ + exec_data.dwSize = sizeof(exec_data); + exec_data.dwVertexCount = 0; + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to set execute data, hr %#x.\n", hr); + exec_data.dwVertexCount = exec_desc.dwBufferSize / sizeof(D3DVERTEX) - 1; + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to set execute data, hr %#x.\n", hr); + exec_data.dwVertexCount = exec_desc.dwBufferSize / sizeof(D3DVERTEX); + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to set execute data, hr %#x.\n", hr); + exec_data.dwVertexCount = exec_desc.dwBufferSize / sizeof(D3DVERTEX) + 1; + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to set execute data, hr %#x.\n", hr); + exec_data.dwVertexCount = 999999; + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to set execute data, hr %#x.\n", hr); + exec_data.dwInstructionOffset = 999999 * sizeof(D3DVERTEX); + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to set execute data, hr %#x.\n", hr); + exec_data.dwInstructionLength = 10240; + hr = IDirect3DExecuteBuffer_SetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to set execute data, hr %#x.\n", hr); + + /* The input structure is not modified. */ + ok(exec_data.dwSize == sizeof(exec_data), "Got unexpected struct size %u\n", + exec_data.dwSize); + ok(exec_data.dwVertexCount == 999999, "Got unexpected vertex count %u\n", + exec_data.dwVertexCount); + ok(exec_data.dwInstructionOffset == 999999 * sizeof(D3DVERTEX), "Got unexpected instruction offset %u\n", + exec_data.dwInstructionOffset); + ok(exec_data.dwInstructionLength == 10240, "Got unexpected instruction length %u\n", + exec_data.dwInstructionLength); + + /* No validation in GetExecuteData. */ + memset(&exec_data, 0, sizeof(exec_data)); + exec_desc.dwSize = sizeof(exec_desc); + hr = IDirect3DExecuteBuffer_GetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to get execute data, hr %#x.\n", hr); + + ok(exec_data.dwSize == sizeof(exec_data), "Got unexpected struct size %u\n", + exec_data.dwSize); + ok(exec_data.dwVertexCount == 999999, "Got unexpected vertex count %u\n", + exec_data.dwVertexCount); + ok(exec_data.dwInstructionOffset == 999999 * sizeof(D3DVERTEX), "Got unexpected instruction offset %u\n", + exec_data.dwInstructionOffset); + ok(exec_data.dwInstructionLength == 10240, "Got unexpected instruction length %u\n", + exec_data.dwInstructionLength); + + memset(&exec_data, 0xaa, sizeof(exec_data)); + exec_desc.dwSize = sizeof(exec_desc) - 1; + hr = IDirect3DExecuteBuffer_GetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to get execute data, hr %#x.\n", hr); + ok(exec_data.dwSize == sizeof(exec_data), "Got unexpected struct size %u\n", + exec_data.dwSize); + ok(exec_data.dwVertexCount == 999999, "Got unexpected vertex count %u\n", + exec_data.dwVertexCount); + ok(exec_data.dwInstructionOffset == 999999 * sizeof(D3DVERTEX), "Got unexpected instruction offset %u\n", + exec_data.dwInstructionOffset); + ok(exec_data.dwInstructionLength == 10240, "Got unexpected instruction length %u\n", + exec_data.dwInstructionLength); + + exec_desc.dwSize = 0; + hr = IDirect3DExecuteBuffer_GetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to get execute data, hr %#x.\n", hr); + exec_desc.dwSize = sizeof(exec_desc) + 1; + hr = IDirect3DExecuteBuffer_GetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to get execute data, hr %#x.\n", hr); + exec_desc.dwSize = ~0U; + hr = IDirect3DExecuteBuffer_GetExecuteData(execute_buffer, &exec_data); + ok(SUCCEEDED(hr), "Failed to get execute data, hr %#x.\n", hr); + + IDirect3DExecuteBuffer_Release(execute_buffer); + IDirect3DDevice_Release(device); + IDirectDraw_Release(ddraw); + DestroyWindow(window); +} + START_TEST(ddraw1) { DDDEVICEIDENTIFIER identifier; @@ -11348,4 +11474,5 @@ START_TEST(ddraw1) test_depth_readback(); test_clear(); test_enum_surfaces(); + test_execute_data(); }
participants (1)
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Alexandre Julliard