143 lines
4.2 KiB
C++
143 lines
4.2 KiB
C++
#include "Hooks_Debug.h"
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#include "common/IInterlockedLong.h"
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#include "common/IFileStream.h"
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#include "skse64_common/Utilities.h"
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#include "skse64_common/SafeWrite.h"
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#include <dbghelp.h>
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#include <shlobj.h>
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static HMODULE s_dbgHelpDLL = NULL;
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typedef BOOL (__stdcall * _MiniDumpWriteDump)(HANDLE hProcess, DWORD ProcessId, HANDLE hFile, MINIDUMP_TYPE DumpType, CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam, CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam, CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam);
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static _MiniDumpWriteDump s_dbgHelpWriteDump = NULL;
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static LPTOP_LEVEL_EXCEPTION_FILTER s_oldExceptionFilter = NULL;
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static SYSTEMTIME s_launchTime;
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static char s_crashDumpPath[MAX_PATH];
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static IInterlockedLong s_inExceptionFilter;
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// ignore these crash points to make dumps less spammy
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const char * IsKnownCrash(EXCEPTION_POINTERS * info)
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{
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return NULL;
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}
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LONG WINAPI ExceptionFilter(EXCEPTION_POINTERS * info)
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{
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if(s_inExceptionFilter.Claim())
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{
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bool writeDump = true;
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const char * crashReason = IsKnownCrash(info);
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if(crashReason)
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{
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_ERROR("Skyrim has crashed in a known crash location (%s). No crashdump will be written in release builds.", crashReason);
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#if NDEBUG
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// skip writing crashdumps for these in release
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writeDump = false;
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#endif
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}
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if(writeDump)
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{
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_ERROR("Skyrim has crashed. A minidump containing debugging information is being written to %s.", s_crashDumpPath);
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HANDLE dumpFile = CreateFile(s_crashDumpPath, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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if(dumpFile != INVALID_HANDLE_VALUE)
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{
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MINIDUMP_EXCEPTION_INFORMATION exceptionInfo;
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exceptionInfo.ThreadId = GetCurrentThreadId();
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exceptionInfo.ExceptionPointers = info;
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exceptionInfo.ClientPointers = FALSE;
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BOOL result = s_dbgHelpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), dumpFile, MiniDumpNormal, &exceptionInfo, NULL, NULL);
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if(result)
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{
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_ERROR("Minidump written.");
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}
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else
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{
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_ERROR("Unable to write minidump.");
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}
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CloseHandle(dumpFile);
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}
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else
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{
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_ERROR("Unable to open minidump. (%08X)", GetLastError());
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}
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}
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s_inExceptionFilter.Release();
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}
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else
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{
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_ERROR("top-level exception filter hit multiple times");
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}
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return EXCEPTION_EXECUTE_HANDLER;
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}
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LPTOP_LEVEL_EXCEPTION_FILTER WINAPI SetUnhandledExceptionFilter_Hook(__in LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter)
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{
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_MESSAGE("SetUnhandledExceptionFilter_Hook: %p", lpTopLevelExceptionFilter);
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return NULL;
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}
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void Hooks_Debug_Init(void)
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{
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GetSystemTime(&s_launchTime);
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UInt32 enableMiniDump = 0;
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GetConfigOption_UInt32("Debug", "WriteMinidumps", &enableMiniDump);
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if(enableMiniDump)
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{
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_MESSAGE("minidumps enabled");
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// try to get dbghelp
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s_dbgHelpDLL = LoadLibrary("dbghelp.dll");
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if(s_dbgHelpDLL)
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{
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s_dbgHelpWriteDump = (_MiniDumpWriteDump)GetProcAddress(s_dbgHelpDLL, "MiniDumpWriteDump");
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if(!s_dbgHelpWriteDump)
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_WARNING("dbghelp missing MiniDumpWriteDump, upgrade to dbghelp 5.1 or later");
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}
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else
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{
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_MESSAGE("no dbghelp");
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}
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// we want to catch crashes from hook commit, apply exception filter in Init function
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if(s_dbgHelpDLL && s_dbgHelpWriteDump)
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{
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// precalculate as much as possible
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char myDocumentsPath[MAX_PATH];
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ASSERT(SUCCEEDED(SHGetFolderPath(NULL, CSIDL_MYDOCUMENTS, NULL, SHGFP_TYPE_CURRENT, myDocumentsPath)));
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sprintf_s(s_crashDumpPath, sizeof(s_crashDumpPath), "%s\\My Games\\Skyrim Special Edition\\SKSE\\Crashdumps\\%04d-%02d-%02d_%02d.%02d.%02d.dmp", myDocumentsPath,
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s_launchTime.wYear, s_launchTime.wMonth, s_launchTime.wDay,
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s_launchTime.wHour, s_launchTime.wMinute, s_launchTime.wSecond);
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IFileStream::MakeAllDirs(s_crashDumpPath);
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// replace previous exception filter
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s_oldExceptionFilter = SetUnhandledExceptionFilter(ExceptionFilter);
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_MESSAGE("old exception filter = %p", s_oldExceptionFilter);
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// disable game overwriting exception filter
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uintptr_t thunkAddress = (uintptr_t)GetIATAddr((UInt8 *)GetModuleHandle(NULL), "kernel32.dll", "SetUnhandledExceptionFilter");
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SafeWrite64(thunkAddress, (uintptr_t)SetUnhandledExceptionFilter_Hook);
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}
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}
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}
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void Hooks_Debug_Commit(void)
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{
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//
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}
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