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[saco] Lock the downloader layouts with compile-time assertions; a wrong offset now fails the build

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ricardoofnl
2026-09-04 19:12:13 +07:00
parent 12d85813ee
commit 426168a8d3
1 changed files with 17 additions and 0 deletions
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saco/net/downloader.cpp
+17
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@@ -9,6 +9,23 @@ int __stdcall sub_1000C770(DWORD a1, DWORD dwCrc, DWORD a3, DWORD a4); // .text:
//----------------------------------------------------
// layout locks: every offset below came out of the disassembly, so a wrong one
// fails to compile instead of quietly mismatching
typedef char AssertSlotSize[sizeof(DOWNLOAD_SLOT) == 0x230 ? 1 : -1];
typedef char AssertSlotPath[offsetof(DOWNLOAD_SLOT, szPath) == 0xC ? 1 : -1];
typedef char AssertSlotRequest[offsetof(DOWNLOAD_SLOT, Request) == 0x112 ? 1 : -1];
typedef char AssertRequestSize[sizeof(DOWNLOAD_REQUEST) == 0x11E ? 1 : -1];
typedef char AssertRequestCrc[offsetof(DOWNLOAD_REQUEST, dwCrc) == 0x11 ? 1 : -1];
typedef char AssertReadyFlag[offsetof(CDownloadManager, m_bSlotsReady) == 0x1344 ? 1 : -1];
typedef char AssertSlotArray[offsetof(CDownloadManager, m_Slots) == 0x1345 ? 1 : -1];
typedef char AssertEntryCount[offsetof(CDownloadList, m_dwCount) == 4 ? 1 : -1];
typedef char AssertEntryState[offsetof(DOWNLOAD_ENTRY, field_7) == 7 ? 1 : -1];
typedef char AssertEntryCrc[offsetof(DOWNLOAD_ENTRY, dwCrc) == 0x10 ? 1 : -1];
typedef char AssertEntry46[offsetof(DOWNLOAD_ENTRY, field_46) == 0x46 ? 1 : -1];
typedef char AssertEntry58[offsetof(DOWNLOAD_ENTRY, field_58) == 0x58 ? 1 : -1];
//----------------------------------------------------
// retail spawns the workers on an empty body
void __cdecl DownloadThreadProc(void *pParam)
{