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#include <imagehlp.h>
#include <malloc.h>
#pragma comment (lib, "imagehlp.lib")
#define MAXNAMELEN 1024
#define HEXDUMP_BREAK 16
void HexDump(char *pszOutput, PBYTE pData, int cbLength, BOOL bShow)
{
char *pszLastLine;
int i;
*pszOutput=0;
pszLastLine = pszOutput;
for (i=0; i<cbLength; i++)
{
if (i%HEXDUMP_BREAK == 0)
{
if (i>=HEXDUMP_BREAK)
{
int j;
strcat (pszOutput, " ");
for (j=i-HEXDUMP_BREAK; j<i; j++) sprintf (pszOutput+strlen(pszOutput), "%c", pData[j]);
}
sprintf (pszOutput+strlen(pszOutput), "\r\n");
if (bShow) LOG (("\t%s", pszLastLine));
if (i==0) *pszOutput=0;
pszLastLine = pszOutput+strlen(pszOutput);
}
sprintf (pszOutput+strlen(pszOutput), "%02X ", pData[i]);
if (i == cbLength-1)
{
int j;
for (j=0; j<HEXDUMP_BREAK - i%HEXDUMP_BREAK - 1; j++) sprintf (pszOutput+strlen(pszOutput), " ");
sprintf (pszOutput+strlen(pszOutput), " ");
for (j=i-i%HEXDUMP_BREAK; j<i; j++) sprintf (pszOutput+strlen(pszOutput), "%c",
(isprint(pData[j]) && pData[j]!=0x0D && pData[j]!=0x0A && pData[j]!=0x09)?pData[j]:'.');
if (bShow) LOG (("\t%s", pszLastLine));
}
}
}
void CrashDumpMem (DWORD dwBase, char *pszName, DWORD dwDwords)
{
int cbLength = sizeof(DWORD) * dwDwords;
PBYTE mem = (PBYTE)alloca (cbLength*2);
SYSTEM_INFO sysInfo;
SIZE_T read=0;
dwBase &= ~3;
dwBase-=cbLength; cbLength*=2;
GetSystemInfo(&sysInfo);
if (dwBase < (DWORD)sysInfo.lpMinimumApplicationAddress || dwBase > (DWORD)sysInfo.lpMaximumApplicationAddress)
return;
if (ReadProcessMemory (GetCurrentProcess(), (PVOID)dwBase, mem, cbLength, &read))
{
char *pszHexdump = (char *)alloca (((cbLength/HEXDUMP_BREAK)+1)*81);
LOG (("Memory dump for %s:\n", pszName));
HexDump (pszHexdump, mem, read, TRUE);
LOG (("\n"));
}
}
BOOL ShowThreadStack (HANDLE hThread, CONTEXT *c)
{
STACKFRAME stFrame={0};
DWORD dwSymOptions, dwFrameNum=0, dwMachine, dwOffsetFromSym=0;
IMAGEHLP_LINE Line={0};
IMAGEHLP_MODULE Module={0};
HANDLE hProcess = GetCurrentProcess();
BYTE pbSym[sizeof(IMAGEHLP_SYMBOL) + MAXNAMELEN];
IMAGEHLP_SYMBOL *pSym = (IMAGEHLP_SYMBOL *)&pbSym;
char szUndecName[MAXNAMELEN], szUndecFullName[MAXNAMELEN];
/*
if ( ! GetThreadContext( hThread, &c ) )
{
SetError (NULL, NULL, 0);
LOG (("Cannot get thread context%d\n", GetLastError()));
return FALSE;
}
*/
LOG (("Please wait...\n"));
if (!SymInitialize (hProcess, NULL, TRUE))
{
LOG (("Cannot initialize symbol engine (%08X)\n", GetLastError()));
return FALSE;
}
dwSymOptions = SymGetOptions();
dwSymOptions |= SYMOPT_LOAD_LINES;
dwSymOptions &= ~SYMOPT_UNDNAME;
SymSetOptions (dwSymOptions);
stFrame.AddrPC.Mode = AddrModeFlat;
dwMachine = IMAGE_FILE_MACHINE_I386;
stFrame.AddrPC.Offset = c->Eip;
stFrame.AddrStack.Offset = c->Esp;
stFrame.AddrStack.Mode = AddrModeFlat;
stFrame.AddrFrame.Offset = c->Ebp;
stFrame.AddrFrame.Mode = AddrModeFlat;
Module.SizeOfStruct = sizeof(Module);
Line.SizeOfStruct = sizeof(Module);
LOG (("\n--# FV EIP----- RetAddr- FramePtr StackPtr Symbol\n"));
do
{
if (!StackWalk (dwMachine, hProcess, hThread, &stFrame, &c, NULL, &SymFunctionTableAccess, &SymGetModuleBase, NULL))
break;
LOG (( "\n%3d %c%c %08lx %08lx %08lx %08lx ",
dwFrameNum, stFrame.Far? 'F': '.', stFrame.Virtual? 'V': '.',
stFrame.AddrPC.Offset, stFrame.AddrReturn.Offset,
stFrame.AddrFrame.Offset, stFrame.AddrStack.Offset ));
if (stFrame.AddrPC.Offset == 0)
{
LOG (( "(-nosymbols-)\n" ));
}
else
{ // we seem to have a valid PC
if (!SymGetSymFromAddr (hProcess, stFrame.AddrPC.Offset, &dwOffsetFromSym, pSym))
{
if (GetLastError() != 487)
{
LOG (("Unable to get symbol from addr (%08X)", GetLastError()));
}
}
else
{
UnDecorateSymbolName (pSym->Name, szUndecName, MAXNAMELEN, UNDNAME_NAME_ONLY );
UnDecorateSymbolName (pSym->Name, szUndecFullName, MAXNAMELEN, UNDNAME_COMPLETE );
LOG (("%s", szUndecName));
if (dwOffsetFromSym) LOG ((" %+ld bytes", (long)dwOffsetFromSym));
LOG (("\n Sig: %s\n Decl: %s\n", pSym->Name, szUndecFullName));
}
if (!SymGetLineFromAddr (hProcess, stFrame.AddrPC.Offset, &dwOffsetFromSym, &Line))
{
if (GetLastError() != 487)
{
LOG (("Unable to get line from addr (%08X)", GetLastError()));
}
}
else
{
LOG ((" Line: %s(%lu) %+ld bytes\n", Line.FileName, Line.LineNumber, dwOffsetFromSym ));
}
if (!SymGetModuleInfo (hProcess, stFrame.AddrPC.Offset, &Module))
{
if (GetLastError() != 487)
{
LOG (("Unable to get module info (%08X)", GetLastError()));
}
}
else
{
char ty[80];
switch ( Module.SymType )
{
case SymNone:
strcpy( ty, "-nosymbols-" );
break;
case SymCoff:
strcpy( ty, "COFF" );
break;
case SymCv:
strcpy( ty, "CV" );
break;
case SymPdb:
strcpy( ty, "PDB" );
break;
case SymExport:
strcpy( ty, "-exported-" );
break;
case SymDeferred:
strcpy( ty, "-deferred-" );
break;
case SymSym:
strcpy( ty, "SYM" );
break;
default:
_snprintf( ty, sizeof ty, "symtype=%ld", (long) Module.SymType );
break;
}
LOG (( " Mod: %s[%s], base: %08lxh\n", Module.ModuleName, Module.ImageName, Module.BaseOfImage ));
LOG (( " Sym: type: %s, file: %s\n", ty, Module.LoadedImageName));
}
}
dwFrameNum++;
} while (stFrame.AddrReturn.Offset);
SymCleanup (hProcess);
return TRUE;
}
LONG Win32FaultHandler(struct _EXCEPTION_POINTERS * ExInfo)
{
char *FaultTx;
int wsFault = ExInfo->ExceptionRecord->ExceptionCode;
PVOID CodeAdress = ExInfo->ExceptionRecord->ExceptionAddress;
#ifndef USE_GUI
char choice[10];
#endif
if (//IsDebuggerPresent() ||
ExInfo->ExceptionRecord->ExceptionCode == EXCEPTION_BREAKPOINT)
return EXCEPTION_CONTINUE_SEARCH;
switch(ExInfo->ExceptionRecord->ExceptionCode)
{
case EXCEPTION_ACCESS_VIOLATION : FaultTx = "ACCESS VIOLATION"; break;
case EXCEPTION_DATATYPE_MISALIGNMENT : FaultTx = "DATATYPE MISALIGNMENT"; break;
case EXCEPTION_FLT_DIVIDE_BY_ZERO : FaultTx = "FLT DIVIDE BY ZERO"; break;
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED : FaultTx = "ARRAY BOUNDS EXCEEDED"; break;
case EXCEPTION_FLT_DENORMAL_OPERAND : FaultTx = "FLT DENORMAL OPERAND"; break;
case EXCEPTION_FLT_INEXACT_RESULT : FaultTx = "FLT INEXACT RESULT"; break;
case EXCEPTION_FLT_INVALID_OPERATION : FaultTx = "FLT INVALID OPERATION"; break;
case EXCEPTION_FLT_OVERFLOW : FaultTx = "FLT OVERFLOW"; break;
case EXCEPTION_FLT_STACK_CHECK : FaultTx = "FLT STACK CHECK"; break;
case EXCEPTION_FLT_UNDERFLOW : FaultTx = "FLT UNDERFLOW"; break;
case EXCEPTION_ILLEGAL_INSTRUCTION : FaultTx = "ILLEGAL INSTRUCTION"; break;
case EXCEPTION_IN_PAGE_ERROR : FaultTx = "IN PAGE ERROR"; break;
case EXCEPTION_INT_DIVIDE_BY_ZERO : FaultTx = "INT DEVIDE BY ZERO"; break;
case EXCEPTION_INT_OVERFLOW : FaultTx = "INT OVERFLOW"; break;
case EXCEPTION_INVALID_DISPOSITION : FaultTx = "INVALID DISPOSITION"; break;
case EXCEPTION_NONCONTINUABLE_EXCEPTION:FaultTx= "NONCONTINUABLE EXCEPTION"; break;
case EXCEPTION_PRIV_INSTRUCTION : FaultTx = "PRIVILEGED INSTRUCTION";break;
case EXCEPTION_SINGLE_STEP : FaultTx = "SINGLE STEP"; break;
case EXCEPTION_STACK_OVERFLOW : FaultTx = "STACK OVERFLOW"; break;
case DBG_CONTROL_C : return EXCEPTION_EXECUTE_HANDLER;
default : FaultTx = "(unknown)"; break;
}
LOG (("****************************************************\n"));
LOG (("*** A Program Fault occurred: ***\n"));
LOG (("*** Error code %08X: %-24s***\n", wsFault, FaultTx));
LOG (("****************************************************\n"));
LOG (("*** Address: %08X Flags: %08X ***\n", (int)CodeAdress, ExInfo->ExceptionRecord->ExceptionFlags));
LOG (("*** EAX=%08X EBX=%08X ECX=%08X ***\n", ExInfo->ContextRecord->Eax, ExInfo->ContextRecord->Ebx, ExInfo->ContextRecord->Ecx));
LOG (("*** EDX=%08X EBP=%08X ESI=%08X ***\n", ExInfo->ContextRecord->Edx, ExInfo->ContextRecord->Ebp, ExInfo->ContextRecord->Esi));
LOG (("*** EDI=%08X ESP=%08X EIP=%08X ***\n", ExInfo->ContextRecord->Edi, ExInfo->ContextRecord->Esp, ExInfo->ContextRecord->Eip));
LOG (("****************************************************\n"));
CrashDumpMem (ExInfo->ContextRecord->Eax, "EAX", 8);
CrashDumpMem (ExInfo->ContextRecord->Ebx, "EBX", 8);
CrashDumpMem (ExInfo->ContextRecord->Ecx, "ECX", 8);
CrashDumpMem (ExInfo->ContextRecord->Edx, "EDX", 8);
CrashDumpMem (ExInfo->ContextRecord->Esi, "ESI", 8);
CrashDumpMem (ExInfo->ContextRecord->Edi, "EDI", 8);
CrashDumpMem (ExInfo->ContextRecord->Esp, "ESP", 32);
CrashDumpMem (ExInfo->ContextRecord->Ebp, "EBP", 32);
{
OSVERSIONINFO ov={0};
ov.dwOSVersionInfoSize=sizeof(ov);
GetVersionEx (&ov);
LOG (("Target platform: Microsoft Windows NT %d.%d Build %d %s\n", ov.dwMajorVersion, ov.dwMinorVersion,
ov.dwBuildNumber, ov.szCSDVersion));
}
//LogStackFrames(CodeAddress, (char *)ExInfo->ContextRecord->Ebp);
ShowThreadStack (GetCurrentThread(), ExInfo->ContextRecord);
#ifdef USE_GUI
if (MessageBox(NULL, "A Program Fault occurred. Do you want to continue execution (not recommended)?", "CRASH!", MB_ICONERROR | MB_YESNO) == IDYES)
#else
printf ("Do you want to continue program execution (not recommended) [y/N]? ");
fgets(choice, sizeof(choice) - 1, stdin);
if (*choice=='y' || *choice=='Y')
#endif
{
ExInfo->ContextRecord->Eip++;
return EXCEPTION_CONTINUE_EXECUTION;
}
return EXCEPTION_EXECUTE_HANDLER;
}
void Crash_Init(void)
{
//#ifndef _DEBUG
SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER) Win32FaultHandler);
//#endif
}
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