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boinc/lib/stackwalker_win.cpp

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/*////////////////////////////////////////////////////////////////////////////
* Project:
* Memory_and_Exception_Trace
*
* ///////////////////////////////////////////////////////////////////////////
* File:
* Stackwalker.cpp
*
* Remarks:
* Dumps the stack of an thread if an exepction occurs
*
* Author:
* Jochen Kalmbach, Germany
* (c) 2002-2003 (Freeware)
* http://www.codeproject.com/tools/leakfinder.asp
*
* License (The zlib/libpng License, http://www.opensource.org/licenses/zlib-license.php):
*
* Copyright (c) 2003 Jochen Kalmbach
*
* This software is provided 'as-is', without any express or implied warranty.
* In no event will the authors be held liable for any damages arising from the
* use of this software.
*
* Permission is granted to anyone to use this software for any purpose, including
* commercial applications, and to alter it and redistribute it freely, subject to
* the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not claim
* that you wrote the original software. If you use this software in a product,
* an acknowledgment in the product documentation would be appreciated but is
* not required.
*
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
*
* 3. This notice may not be removed or altered from any source distribution.
*
*//////////////////////////////////////////////////////////////////////////////
#ifdef _WIN32
#include "boinc_win.h"
#endif
// the form of the output file
static eAllocCheckOutput g_CallstackOutputType = ACOutput_Simple;
// Size of Callstack-trace in bytes (0x500 => appr. 5-9 functions, depending on parameter count for each function)
#define MAX_ESP_LEN_BUF 0x500
// MaxSize: 128 KByte (only for StackwalkFilter)
#define LOG_FILE_MAX_SIZE 1024*128
// #############################################################################################
#ifdef _IMAGEHLP_
#error "'imagehlp.h' should only included here, not before this point! Otherwise there are some problems!"
#endif
#pragma pack( push, before_imagehlp, 8 )
#include <imagehlp.h>
#pragma pack( pop, before_imagehlp )
#if API_VERSION_NUMBER < 7 // ImageHelp-Version is older.... so define it by mayself
// The following definition is only available with VC++ 6.0 or higher, so include it here
extern "C" {
//
// source file line data structure
//
typedef struct _IMAGEHLP_LINE
{
DWORD SizeOfStruct; // set to sizeof(IMAGEHLP_LINE)
DWORD Key; // internal
DWORD LineNumber; // line number in file
PCHAR FileName; // full filename
DWORD Address; // first instruction of line
} IMAGEHLP_LINE, *PIMAGEHLP_LINE;
#define SYMOPT_LOAD_LINES 0x00000010
} // extern "C"
#endif
// Forward definitions of functions:
static void ShowStackRM( HANDLE hThread, CONTEXT& c, FILE *fLogFile, PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryFunction, HANDLE hProcess);
static void ShowStack( HANDLE hThread, CONTEXT& c, FILE *fLogFile);
static void AllocHashOut(FILE*);
static ULONG AllocHashOutLeaks(FILE*);
// Global data:
static BOOL g_bInitialized = FALSE;
static HINSTANCE g_hImagehlpDll = NULL;
static DWORD g_dwShowCount = 0; // increase at every ShowStack-Call
static CRITICAL_SECTION g_csFileOpenClose = {0};
// Globale Vars:
static TCHAR *g_pszAllocLogName = NULL;
static FILE *g_fFile = NULL;
// AllocCheckFileOpen
// Checks if the log-file is already opened
// if not, try to open file (append or create if not exists)
// if open failed, redirect output to stderr
static void AllocCheckFileOpen(bool bAppend = true) {
// is the File already open? If not open it...
if (g_fFile == NULL)
if (g_pszAllocLogName != NULL)
{
if (bAppend == false)
g_fFile = _tfopen(g_pszAllocLogName, _T("w"));
else
g_fFile = _tfopen(g_pszAllocLogName, _T("a"));
}
if (g_fFile == NULL)
g_fFile = stderr;
}
// Write Date/Time to specified file (will also work after 2038)
static void WriteDateTime(FILE *fFile, BOOL asXMLAttrs = FALSE) {
TCHAR pszTemp[11], pszTemp2[11];
if (fFile != NULL) {
_tstrdate( pszTemp );
_tstrtime( pszTemp2 );
if (asXMLAttrs == FALSE)
_ftprintf(fFile, _T("%s %s"), pszTemp, pszTemp2 ); // also ok after year 2038 (asctime is NOT ok)
else
_ftprintf(fFile, _T("date=\"%s\" time=\"%s\" "), pszTemp, pszTemp2 ); // also ok after year 2038 (asctime is NOT ok)
}
} // WriteDateTime
// ##########################################################################################
// ##########################################################################################
// ##########################################################################################
// ##########################################################################################
#define gle (GetLastError())
#define lenof(a) (sizeof(a) / sizeof((a)[0]))
#define MAXNAMELEN 1024 // max name length for found symbols
#define IMGSYMLEN ( sizeof IMAGEHLP_SYMBOL )
#define TTBUFLEN 8096 // for a temp buffer (2^13)
// SymCleanup()
typedef BOOL (__stdcall *tSC)( IN HANDLE hProcess );
tSC pSC = NULL;
// SymFunctionTableAccess()
typedef PVOID (__stdcall *tSFTA)( HANDLE hProcess, DWORD AddrBase );
tSFTA pSFTA = NULL;
// SymGetLineFromAddr()
typedef BOOL (__stdcall *tSGLFA)( IN HANDLE hProcess, IN DWORD dwAddr,
OUT PDWORD pdwDisplacement, OUT PIMAGEHLP_LINE Line );
tSGLFA pSGLFA = NULL;
// SymGetModuleBase()
typedef DWORD (__stdcall *tSGMB)( IN HANDLE hProcess, IN DWORD dwAddr );
tSGMB pSGMB = NULL;
// SymGetModuleInfo()
typedef BOOL (__stdcall *tSGMI)( IN HANDLE hProcess, IN DWORD dwAddr, OUT PIMAGEHLP_MODULE ModuleInfo );
tSGMI pSGMI = NULL;
// SymGetOptions()
typedef DWORD (__stdcall *tSGO)( VOID );
tSGO pSGO = NULL;
// SymGetSymFromAddr()
typedef BOOL (__stdcall *tSGSFA)( IN HANDLE hProcess, IN DWORD dwAddr,
OUT PDWORD pdwDisplacement, OUT PIMAGEHLP_SYMBOL Symbol );
tSGSFA pSGSFA = NULL;
// SymInitialize()
typedef BOOL (__stdcall *tSI)( IN HANDLE hProcess, IN PSTR UserSearchPath, IN BOOL fInvadeProcess );
tSI pSI = NULL;
// SymLoadModule()
typedef DWORD (__stdcall *tSLM)( IN HANDLE hProcess, IN HANDLE hFile,
IN PSTR ImageName, IN PSTR ModuleName, IN DWORD BaseOfDll, IN DWORD SizeOfDll );
tSLM pSLM = NULL;
// SymSetOptions()
typedef DWORD (__stdcall *tSSO)( IN DWORD SymOptions );
tSSO pSSO = NULL;
// StackWalk()
typedef BOOL (__stdcall *tSW)( DWORD MachineType, HANDLE hProcess,
HANDLE hThread, LPSTACKFRAME StackFrame, PVOID ContextRecord,
PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,
PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,
PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,
PTRANSLATE_ADDRESS_ROUTINE TranslateAddress );
tSW pSW = NULL;
// UnDecorateSymbolName()
typedef DWORD (__stdcall WINAPI *tUDSN)( PCSTR DecoratedName, PSTR UnDecoratedName,
DWORD UndecoratedLength, DWORD Flags );
tUDSN pUDSN = NULL;
struct ModuleEntry
{
std::string imageName;
std::string moduleName;
DWORD baseAddress;
DWORD size;
};
typedef std::vector< ModuleEntry > ModuleList;
typedef ModuleList::iterator ModuleListIter;
// **************************************** ToolHelp32 ************************
#define MAX_MODULE_NAME32 255
#define TH32CS_SNAPMODULE 0x00000008
#pragma pack( push, 8 )
typedef struct tagMODULEENTRY32
{
DWORD dwSize;
DWORD th32ModuleID; // This module
DWORD th32ProcessID; // owning process
DWORD GlblcntUsage; // Global usage count on the module
DWORD ProccntUsage; // Module usage count in th32ProcessID's context
BYTE * modBaseAddr; // Base address of module in th32ProcessID's context
DWORD modBaseSize; // Size in bytes of module starting at modBaseAddr
HMODULE hModule; // The hModule of this module in th32ProcessID's context
char szModule[MAX_MODULE_NAME32 + 1];
char szExePath[MAX_PATH];
} MODULEENTRY32;
typedef MODULEENTRY32 * PMODULEENTRY32;
typedef MODULEENTRY32 * LPMODULEENTRY32;
#pragma pack( pop )
static bool GetModuleListTH32(ModuleList& modules, DWORD pid, FILE *fLogFile)
{
// CreateToolhelp32Snapshot()
typedef HANDLE (__stdcall *tCT32S)(DWORD dwFlags, DWORD th32ProcessID);
// Module32First()
typedef BOOL (__stdcall *tM32F)(HANDLE hSnapshot, LPMODULEENTRY32 lpme);
// Module32Next()
typedef BOOL (__stdcall *tM32N)(HANDLE hSnapshot, LPMODULEENTRY32 lpme);
// try both dlls...
const TCHAR *dllname[] = { _T("kernel32.dll"), _T("tlhelp32.dll") };
HINSTANCE hToolhelp;
tCT32S pCT32S;
tM32F pM32F;
tM32N pM32N;
HANDLE hSnap;
MODULEENTRY32 me;
me.dwSize = sizeof(me);
bool keepGoing;
ModuleEntry e;
int i;
for (i = 0; i<lenof(dllname); i++ )
{
hToolhelp = LoadLibrary( dllname[i] );
if (hToolhelp == NULL)
continue;
pCT32S = (tCT32S) GetProcAddress(hToolhelp, "CreateToolhelp32Snapshot");
pM32F = (tM32F) GetProcAddress(hToolhelp, "Module32First");
pM32N = (tM32N) GetProcAddress(hToolhelp, "Module32Next");
if ( pCT32S != 0 && pM32F != 0 && pM32N != 0 )
break; // found the functions!
FreeLibrary(hToolhelp);
hToolhelp = NULL;
}
if (hToolhelp == NULL)
return false;
hSnap = pCT32S( TH32CS_SNAPMODULE, pid );
if (hSnap == (HANDLE) -1)
return false;
keepGoing = !!pM32F( hSnap, &me );
while (keepGoing)
{
e.imageName = me.szExePath;
e.moduleName = me.szModule;
e.baseAddress = (DWORD) me.modBaseAddr;
e.size = me.modBaseSize;
modules.push_back( e );
keepGoing = !!pM32N( hSnap, &me );
}
CloseHandle(hSnap);
FreeLibrary(hToolhelp);
return modules.size() != 0;
} // GetModuleListTH32
// **************************************** PSAPI ************************
typedef struct _MODULEINFO {
LPVOID lpBaseOfDll;
DWORD SizeOfImage;
LPVOID EntryPoint;
} MODULEINFO, *LPMODULEINFO;
static bool GetModuleListPSAPI(ModuleList &modules, DWORD pid, HANDLE hProcess, FILE *fLogFile)
{
// EnumProcessModules()
typedef BOOL (__stdcall *tEPM)(HANDLE hProcess, HMODULE *lphModule, DWORD cb, LPDWORD lpcbNeeded );
// GetModuleFileNameEx()
typedef DWORD (__stdcall *tGMFNE)(HANDLE hProcess, HMODULE hModule, LPSTR lpFilename, DWORD nSize );
// GetModuleBaseName()
typedef DWORD (__stdcall *tGMBN)(HANDLE hProcess, HMODULE hModule, LPSTR lpFilename, DWORD nSize );
// GetModuleInformation()
typedef BOOL (__stdcall *tGMI)(HANDLE hProcess, HMODULE hModule, LPMODULEINFO pmi, DWORD nSize );
HINSTANCE hPsapi;
tEPM pEPM;
tGMFNE pGMFNE;
tGMBN pGMBN;
tGMI pGMI;
DWORD i;
ModuleEntry e;
DWORD cbNeeded;
MODULEINFO mi;
HMODULE *hMods = 0;
char *tt = 0;
hPsapi = LoadLibrary( _T("psapi.dll") );
if ( hPsapi == 0 )
return false;
modules.clear();
pEPM = (tEPM) GetProcAddress( hPsapi, "EnumProcessModules" );
pGMFNE = (tGMFNE) GetProcAddress( hPsapi, "GetModuleFileNameExA" );
pGMBN = (tGMFNE) GetProcAddress( hPsapi, "GetModuleBaseNameA" );
pGMI = (tGMI) GetProcAddress( hPsapi, "GetModuleInformation" );
if ( pEPM == 0 || pGMFNE == 0 || pGMBN == 0 || pGMI == 0 )
{
// we couldn<64>t find all functions
FreeLibrary( hPsapi );
return false;
}
hMods = (HMODULE*) malloc(sizeof(HMODULE) * (TTBUFLEN / sizeof HMODULE));
tt = (char*) malloc(sizeof(char) * TTBUFLEN);
if ( ! pEPM( hProcess, hMods, TTBUFLEN, &cbNeeded ) )
{
_ftprintf(fLogFile, _T("%lu: EPM failed, GetLastError = %lu\n"), g_dwShowCount, gle );
goto cleanup;
}
if ( cbNeeded > TTBUFLEN )
{
_ftprintf(fLogFile, _T("%lu: More than %lu module handles. Huh?\n"), g_dwShowCount, lenof( hMods ) );
goto cleanup;
}
for ( i = 0; i < cbNeeded / sizeof hMods[0]; i++ )
{
// base address, size
pGMI(hProcess, hMods[i], &mi, sizeof mi );
e.baseAddress = (DWORD) mi.lpBaseOfDll;
e.size = mi.SizeOfImage;
// image file name
tt[0] = 0;
pGMFNE(hProcess, hMods[i], tt, TTBUFLEN );
e.imageName = tt;
// module name
tt[0] = 0;
pGMBN(hProcess, hMods[i], tt, TTBUFLEN );
e.moduleName = tt;
modules.push_back(e);
}
cleanup:
if (hPsapi)
FreeLibrary(hPsapi);
free(tt);
free(hMods);
return modules.size() != 0;
} // GetModuleListPSAPI
static bool GetModuleList(ModuleList& modules, DWORD pid, HANDLE hProcess, FILE *fLogFile)
{
// first try toolhelp32
if (GetModuleListTH32(modules, pid, fLogFile) )
return true;
// then try psapi
return GetModuleListPSAPI(modules, pid, hProcess, fLogFile);
} // GetModuleList
static void EnumAndLoadModuleSymbols( HANDLE hProcess, DWORD pid, FILE *fLogFile )
{
static ModuleList modules;
static ModuleListIter it;
char *img, *mod;
// fill in module list
GetModuleList(modules, pid, hProcess, fLogFile);
for ( it = modules.begin(); it != modules.end(); ++ it )
{
// SymLoadModule() wants writeable strings
img = strdup(it->imageName.c_str());
mod = strdup(it->moduleName.c_str());
pSLM( hProcess, 0, img, mod, it->baseAddress, it->size );
free(img);
free(mod);
std::string s;
}
} // EnumAndLoadModuleSymbols
static int InitStackWalk(void)
{
if (g_bInitialized != FALSE)
return 0; // already initialized
// old: we load imagehlp.dll dynamically because the NT4-version does not
// old: offer all the functions that are in the NT5 lib
// 02-12-19: Now we only support dbghelp.dll!
// To use it on NT you have to install the redistrubutable for DBGHELP.DLL
g_hImagehlpDll = LoadLibrary( _T("dbghelp.dll") );
if ( g_hImagehlpDll == NULL )
{
printf( "LoadLibrary( \"dbghelp.dll\" ): GetLastError = %lu\n", gle );
g_bInitialized = FALSE;
return 1;
}
pSC = (tSC) GetProcAddress( g_hImagehlpDll, "SymCleanup" );
pSFTA = (tSFTA) GetProcAddress( g_hImagehlpDll, "SymFunctionTableAccess" );
pSGLFA = (tSGLFA) GetProcAddress( g_hImagehlpDll, "SymGetLineFromAddr" );
pSGMB = (tSGMB) GetProcAddress( g_hImagehlpDll, "SymGetModuleBase" );
pSGMI = (tSGMI) GetProcAddress( g_hImagehlpDll, "SymGetModuleInfo" );
pSGO = (tSGO) GetProcAddress( g_hImagehlpDll, "SymGetOptions" );
pSGSFA = (tSGSFA) GetProcAddress( g_hImagehlpDll, "SymGetSymFromAddr" );
pSI = (tSI) GetProcAddress( g_hImagehlpDll, "SymInitialize" );
pSSO = (tSSO) GetProcAddress( g_hImagehlpDll, "SymSetOptions" );
pSW = (tSW) GetProcAddress( g_hImagehlpDll, "StackWalk" );
pUDSN = (tUDSN) GetProcAddress( g_hImagehlpDll, "UnDecorateSymbolName" );
pSLM = (tSLM) GetProcAddress( g_hImagehlpDll, "SymLoadModule" );
if ( pSC == NULL || pSFTA == NULL || pSGMB == NULL || pSGMI == NULL ||
pSGO == NULL || pSGSFA == NULL || pSI == NULL || pSSO == NULL ||
pSW == NULL || pUDSN == NULL || pSLM == NULL )
{
printf( "GetProcAddress(): some required function not found.\n" );
FreeLibrary( g_hImagehlpDll );
g_bInitialized = FALSE;
return 1;
}
g_bInitialized = TRUE;
InitializeCriticalSection(&g_csFileOpenClose);
return 0;
}
static TCHAR s_szExceptionLogFileName[_MAX_PATH] = _T("\\exceptions.log"); // default
static BOOL s_bUnhandledExeptionFilterSet = FALSE;
static LONG __stdcall CrashHandlerExceptionFilter(EXCEPTION_POINTERS* pExPtrs)
{
LONG lRet;
lRet = StackwalkFilter(pExPtrs, /*EXCEPTION_CONTINUE_SEARCH*/EXCEPTION_EXECUTE_HANDLER, NULL);
TCHAR lString[500];
_stprintf(lString,
_T("*** Unhandled Exception!\n")
_T(" ExpCode: 0x%8.8X\n")
_T(" ExpFlags: %d\n")
_T(" ExpAddress: 0x%8.8X\n")
_T(" Please report!"),
pExPtrs->ExceptionRecord->ExceptionCode,
pExPtrs->ExceptionRecord->ExceptionFlags,
(PVOID)pExPtrs->ExceptionRecord->ExceptionAddress);
FatalAppExit(-1,lString);
return lRet;
}
static TCHAR *GetExpectionCodeText(DWORD dwExceptionCode) {
switch(dwExceptionCode) {
case EXCEPTION_ACCESS_VIOLATION: return _T("ACCESS VIOLATION");
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: return _T("ARRAY BOUNDS EXCEEDED");
case EXCEPTION_BREAKPOINT: return _T("BREAKPOINT");
case EXCEPTION_DATATYPE_MISALIGNMENT: return _T("DATATYPE MISALIGNMENT");
case EXCEPTION_FLT_DENORMAL_OPERAND: return _T("FLT DENORMAL OPERAND");
case EXCEPTION_FLT_DIVIDE_BY_ZERO: return _T("FLT DIVIDE BY ZERO");
case EXCEPTION_FLT_INEXACT_RESULT: return _T("FLT INEXACT RESULT");
case EXCEPTION_FLT_INVALID_OPERATION: return _T("FLT INVALID OPERATION");
case EXCEPTION_FLT_OVERFLOW: return _T("FLT OVERFLOW");
case EXCEPTION_FLT_STACK_CHECK: return _T("FLT STACK CHECK");
case EXCEPTION_FLT_UNDERFLOW: return _T("FLT UNDERFLOW");
case EXCEPTION_ILLEGAL_INSTRUCTION: return _T("ILLEGAL INSTRUCTION");
case EXCEPTION_IN_PAGE_ERROR: return _T("IN PAGE ERROR");
case EXCEPTION_INT_DIVIDE_BY_ZERO: return _T("INT DIVIDE BY ZERO");
case EXCEPTION_INT_OVERFLOW: return _T("INT OVERFLOW");
case EXCEPTION_INVALID_DISPOSITION: return _T("INVALID DISPOSITION");
case EXCEPTION_NONCONTINUABLE_EXCEPTION: return _T("NONCONTINUABLE EXCEPTION");
case EXCEPTION_PRIV_INSTRUCTION: return _T("PRIV INSTRUCTION");
case EXCEPTION_SINGLE_STEP: return _T("SINGLE STEP");
case EXCEPTION_STACK_OVERFLOW: return _T("STACK OVERFLOW");
case DBG_CONTROL_C : return _T("DBG CONTROL C ");
default:
return _T("<unkown exception>");
}
} // GetExpectionCodeText
// Function is not multi-threading safe, because of static char!
static TCHAR *GetAdditionalExpectionCodeText(PEXCEPTION_RECORD pExceptionRecord) {
static TCHAR szTemp[100];
switch(pExceptionRecord->ExceptionCode) {
case EXCEPTION_ACCESS_VIOLATION:
if (pExceptionRecord->NumberParameters == 2) {
switch(pExceptionRecord->ExceptionInformation[0]) {
case 0: // read attempt
_stprintf(szTemp, _T(" read attempt to address 0x%8.8X "), pExceptionRecord->ExceptionInformation[1]);
return szTemp;
case 1: // write attempt
_stprintf(szTemp, _T(" write attempt to address 0x%8.8X "), pExceptionRecord->ExceptionInformation[1]);
return szTemp;
default:
return _T("");
}
} // if (pExceptionRecord->NumberParameters == 2)
return _T("");
default:
return _T("");
} // switch(pExceptionRecord->ExceptionCode)
} // GetAdditionalExpectionCodeText
std::string SimpleXMLEncode(PCSTR szText)
{
std::string szRet;
for (size_t i=0; i<strlen(szText); i++)
{
switch(szText[i])
{
case '&':
szRet.append("&amp;");
break;
case '<':
szRet.append("&lt;");
break;
case '>':
szRet.append("&gt;");
break;
case '"':
szRet.append("&quot;");
break;
case '\'':
szRet.append("&apos;");
break;
default:
szRet += szText[i];
}
}
return szRet;
}
// #################################################################################
// #################################################################################
// Here the Stackwalk-Part begins.
// Some of the code is from an example from a book
// But I couldn<64>t find the reference anymore... sorry...
// If someone knowns, please let me know...
// #################################################################################
// #################################################################################
// if you use C++ exception handling: install a translator function
// with set_se_translator(). In the context of that function (but *not*
// afterwards), you can either do your stack dump, or save the CONTEXT
// record as a local copy. Note that you must do the stack sump at the
// earliest opportunity, to avoid the interesting stackframes being gone
// by the time you do the dump.
// status:
// - EXCEPTION_CONTINUE_SEARCH: exception wird weitergereicht
// - EXCEPTION_CONTINUE_EXECUTION:
// - EXCEPTION_EXECUTE_HANDLER:
DWORD StackwalkFilter( EXCEPTION_POINTERS *ep, DWORD status, LPCTSTR pszLogFile)
{
HANDLE hThread;
FILE *fFile = stderr; // default to stderr
if (pszLogFile != NULL) { // a filename is provided
// Open the logfile
fFile = _tfopen(pszLogFile, _T("a"));
if (fFile != NULL) { // Is the file too big?
long size;
fseek(fFile, 0, SEEK_END);
size = ftell(fFile); // Get the size of the file
if (size >= LOG_FILE_MAX_SIZE) {
TCHAR *pszTemp = (TCHAR*) malloc(MAX_PATH);
// It is too big...
fclose(fFile);
_tcscpy(pszTemp, pszLogFile);
_tcscat(pszTemp, _T(".old"));
_tremove(pszTemp); // Remove an old file, if exists
_trename(pszLogFile, pszTemp); // rename the actual file
fFile = _tfopen(pszLogFile, _T("w")); // create a new file
free(pszTemp);
}
}
} // if (pszLogFile != NULL)
if (fFile == NULL) {
fFile = stderr;
}
// Write infos about the exception
if (g_CallstackOutputType == ACOutput_XML)
{
_ftprintf(fFile, _T("<EXCEPTION code=\"%8.8X\" addr=\"%8.8X\" "),
ep->ExceptionRecord->ExceptionCode,
(PVOID)ep->ExceptionRecord->ExceptionAddress);
WriteDateTime(fFile, TRUE);
_ftprintf(fFile, _T("code_desc=\"%s\" more_desc=\"%s\">\n"), GetExpectionCodeText(ep->ExceptionRecord->ExceptionCode),
GetAdditionalExpectionCodeText(ep->ExceptionRecord));
}
DuplicateHandle( GetCurrentProcess(), GetCurrentThread(),
GetCurrentProcess(), &hThread, 0, false, DUPLICATE_SAME_ACCESS );
ShowStack( hThread, *(ep->ContextRecord), fFile);
CloseHandle( hThread );
if (g_CallstackOutputType == ACOutput_XML)
_ftprintf(fFile, _T("</EXCEPTION>\n"));
fclose(fFile);
return status;
} // StackwalkFilter
void ShowStack( HANDLE hThread, CONTEXT& c, LPCTSTR pszLogFile)
{
FILE *fFile = stderr; // default to stderr
if (pszLogFile != NULL) { // a filename is available
// Open the logfile
fFile = _tfopen(pszLogFile, _T("a"));
if (fFile != NULL) { // Is the file too big?
long size;
fseek(fFile, 0, SEEK_END);
size = ftell(fFile); // Get the size of the file
if (size >= LOG_FILE_MAX_SIZE) {
TCHAR *pszTemp = (TCHAR*) malloc(MAX_PATH);
// It is too big...
fclose(fFile);
_tcscpy(pszTemp, pszLogFile);
_tcscat(pszTemp, _T(".old"));
_tremove(pszTemp); // Remove an old file, if exists
_trename(pszLogFile, pszTemp); // rename the actual file
fFile = _tfopen(pszLogFile, _T("w")); // open new file
free(pszTemp);
}
}
} // if (pszLogFile != NULL)
if (fFile == NULL) {
fFile = stderr;
}
ShowStack( hThread, c, fFile);
fclose(fFile);
}
static void ShowStack( HANDLE hThread, CONTEXT& c, FILE *fLogFile) {
ShowStackRM(hThread, c, fLogFile, NULL, GetCurrentProcess());
}
static void ShowStackRM( HANDLE hThread, CONTEXT& c, FILE *fLogFile, PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryFunction, HANDLE hSWProcess) {
// normally, call ImageNtHeader() and use machine info from PE header
DWORD imageType = IMAGE_FILE_MACHINE_I386;
HANDLE hProcess = GetCurrentProcess(); // hProcess normally comes from outside
int frameNum; // counts walked frames
DWORD offsetFromSymbol; // tells us how far from the symbol we were
DWORD offsetFromLine; // tells us how far from the line we were
DWORD symOptions; // symbol handler settings
static IMAGEHLP_SYMBOL *pSym = NULL;
char undName[MAXNAMELEN]; // undecorated name
char undFullName[MAXNAMELEN]; // undecorated name with all shenanigans
IMAGEHLP_MODULE Module;
IMAGEHLP_LINE Line;
BOOL bXMLTagWrote;
std::string symSearchPath;
static bFirstTime = TRUE;
// If no logfile is present, outpur to "stderr"
if (fLogFile == NULL) {
fLogFile = stderr;
}
STACKFRAME s; // in/out stackframe
memset( &s, '\0', sizeof s );
if ( (g_bInitialized == FALSE) && (bFirstTime == TRUE) ) {
InitStackWalk();
}
if (g_bInitialized == FALSE)
{
// Could not init!!!!
bFirstTime = FALSE;
_ftprintf(fLogFile, _T("%lu: Stackwalker not initialized (or was not able to initialize)!\n"), g_dwShowCount);
return;
}
// Critical section begin...
EnterCriticalSection(&g_csFileOpenClose);
InterlockedIncrement((long*) &g_dwShowCount); // erh<72>he counter
// NOTE: normally, the exe directory and the current directory should be taken
// from the target process. The current dir would be gotten through injection
// of a remote thread; the exe fir through either ToolHelp32 or PSAPI.
if (pSym == NULL) {
pSym = (IMAGEHLP_SYMBOL *) malloc( IMGSYMLEN + MAXNAMELEN );
if (!pSym) goto cleanup; // not enough memory...
}
if (g_CallstackOutputType != ACOutput_XML)
{
_ftprintf(fLogFile, _T("%lu: "), g_dwShowCount);
WriteDateTime(fLogFile);
_ftprintf(fLogFile, _T("\n"));
}
if (bFirstTime) {
CHAR *tt, *p;
tt = (CHAR*) malloc(sizeof(CHAR) * TTBUFLEN); // Get the temporary buffer
if (!tt) goto cleanup; // not enough memory...
// build symbol search path from:
symSearchPath = "";
// current directory
if ( GetCurrentDirectoryA( TTBUFLEN, tt ) )
symSearchPath += tt + std::string( ";" );
// dir with executable
if ( GetModuleFileNameA( 0, tt, TTBUFLEN ) )
{
for ( p = tt + strlen( tt ) - 1; p >= tt; -- p )
{
// locate the rightmost path separator
if ( *p == '\\' || *p == '/' || *p == ':' )
break;
}
// if we found one, p is pointing at it; if not, tt only contains
// an exe name (no path), and p points before its first byte
if ( p != tt ) // path sep found?
{
if ( *p == ':' ) // we leave colons in place
++ p;
*p = '\0'; // eliminate the exe name and last path sep
symSearchPath += tt + std::string( ";" );
}
}
// environment variable _NT_SYMBOL_PATH
if ( GetEnvironmentVariableA( "_NT_SYMBOL_PATH", tt, TTBUFLEN ) )
symSearchPath += tt + std::string( ";" );
// environment variable _NT_ALTERNATE_SYMBOL_PATH
if ( GetEnvironmentVariableA( "_NT_ALTERNATE_SYMBOL_PATH", tt, TTBUFLEN ) )
symSearchPath += tt + std::string( ";" );
// environment variable SYSTEMROOT
if ( GetEnvironmentVariableA( "SYSTEMROOT", tt, TTBUFLEN ) )
symSearchPath += tt + std::string( ";" );
if ( symSearchPath.size() > 0 ) // if we added anything, we have a trailing semicolon
symSearchPath = symSearchPath.substr( 0, symSearchPath.size() - 1 );
// why oh why does SymInitialize() want a writeable string?
strncpy( tt, symSearchPath.c_str(), TTBUFLEN );
tt[TTBUFLEN - 1] = '\0'; // if strncpy() overruns, it doesn't add the null terminator
// init symbol handler stuff (SymInitialize())
if ( ! pSI( hProcess, tt, false ) )
{
if (g_CallstackOutputType != ACOutput_XML)
_ftprintf(fLogFile, _T("%lu: SymInitialize(): GetLastError = %lu\n"), g_dwShowCount, gle );
if (tt) free( tt );
goto cleanup;
}
// SymGetOptions()
symOptions = pSGO();
symOptions |= SYMOPT_LOAD_LINES;
symOptions &= ~SYMOPT_UNDNAME;
symOptions &= ~SYMOPT_DEFERRED_LOADS;
pSSO( symOptions ); // SymSetOptions()
// Enumerate modules and tell imagehlp.dll about them.
// On NT, this is not necessary, but it won't hurt.
EnumAndLoadModuleSymbols( hProcess, GetCurrentProcessId(), fLogFile );
if (tt)
free( tt );
} // bFirstTime = TRUE
bFirstTime = FALSE;
// init STACKFRAME for first call
// Notes: AddrModeFlat is just an assumption. I hate VDM debugging.
// Notes: will have to be #ifdef-ed for Alphas; MIPSes are dead anyway,
// and good riddance.
s.AddrPC.Offset = c.Eip;
s.AddrPC.Mode = AddrModeFlat;
s.AddrFrame.Offset = c.Ebp;
s.AddrFrame.Mode = AddrModeFlat;
memset( pSym, '\0', IMGSYMLEN + MAXNAMELEN );
pSym->SizeOfStruct = IMGSYMLEN;
pSym->MaxNameLength = MAXNAMELEN;
memset( &Line, '\0', sizeof Line );
Line.SizeOfStruct = sizeof Line;
memset( &Module, '\0', sizeof Module );
Module.SizeOfStruct = sizeof Module;
for ( frameNum = 0; ; ++ frameNum )
{
// get next stack frame (StackWalk(), SymFunctionTableAccess(), SymGetModuleBase())
// if this returns ERROR_INVALID_ADDRESS (487) or ERROR_NOACCESS (998), you can
// assume that either you are done, or that the stack is so hosed that the next
// deeper frame could not be found.
// CONTEXT need not to be suplied if imageTyp is IMAGE_FILE_MACHINE_I386!
if ( ! pSW( imageType, hSWProcess, hThread, &s, NULL, ReadMemoryFunction, pSFTA, pSGMB, NULL ) )
break;
bXMLTagWrote = FALSE;
if (g_CallstackOutputType == ACOutput_Advanced)
_ftprintf(fLogFile, _T("\n%lu: %3d"), g_dwShowCount, frameNum);
if ( s.AddrPC.Offset == 0 )
{
// Special case: If we are here, we have no valid callstack entry!
switch(g_CallstackOutputType)
{
case ACOutput_Simple:
_ftprintf(fLogFile, _T("%lu: (-nosymbols- PC == 0)\n"), g_dwShowCount);
break;
case ACOutput_Advanced:
_ftprintf(fLogFile, _T(" (-nosymbols- PC == 0)\n"));
break;
case ACOutput_XML:
// TODO: ....
_ftprintf(fLogFile, _T("<STACKENTRY decl=\"(-nosymbols- PC == 0)\"/>\n"));
break;
}
}
else
{
// we seem to have a valid PC
undName[0] = 0;
undFullName[0] = 0;
offsetFromSymbol = 0;
// show procedure info (SymGetSymFromAddr())
if ( ! pSGSFA( hProcess, s.AddrPC.Offset, &offsetFromSymbol, pSym ) )
{
if (g_CallstackOutputType == ACOutput_Advanced)
{
if ( gle != 487 )
_ftprintf(fLogFile, _T(" SymGetSymFromAddr(): GetLastError = %lu\n"), gle );
else
_ftprintf(fLogFile, _T("\n"));
}
}
else
{
// UnDecorateSymbolName()
pUDSN( pSym->Name, undName, MAXNAMELEN, UNDNAME_NAME_ONLY );
pUDSN( pSym->Name, undFullName, MAXNAMELEN, UNDNAME_COMPLETE );
if (g_CallstackOutputType == ACOutput_Advanced)
{
if (strlen(undName) > 0)
fprintf(fLogFile, " %s %+ld bytes\n", undName, (long) offsetFromSymbol );
else
{
fprintf(fLogFile, " Sig: %s %+ld bytes\n", pSym->Name, (long) offsetFromSymbol );
strcpy(undName, pSym->Name);
}
fprintf(fLogFile, "%lu: Decl: %s\n", g_dwShowCount, undFullName );
}
}
//if (g_CallstackOutputType == ACOutput_XML)
// fprintf(fLogFile, "decl=\"%s\" decl_offset=\"%+ld\" ", SimpleXMLEncode(undName).c_str(), (long) offsetFromSymbol);
// show line number info, NT5.0-method (SymGetLineFromAddr())
offsetFromLine = 0;
if ( pSGLFA != NULL )
{ // yes, we have SymGetLineFromAddr()
if ( ! pSGLFA( hProcess, s.AddrPC.Offset, &offsetFromLine, &Line ) )
{
if ( (gle != 487) && (frameNum > 0) ) // ignore error for first frame
{
if (g_CallstackOutputType == ACOutput_XML)
{
_ftprintf(fLogFile, _T("<STACKENTRY "));
bXMLTagWrote = TRUE;
fprintf(fLogFile, "decl=\"%s\" decl_offset=\"%+ld\" ", SimpleXMLEncode(undName).c_str(), (long) offsetFromSymbol);
_ftprintf(fLogFile, _T("srcfile=\"SymGetLineFromAddr(): GetLastError = %lu\" "), gle);
}
else
_ftprintf(fLogFile, _T("%lu: SymGetLineFromAddr(): GetLastError = %lu\n"), g_dwShowCount, gle );
}
}
else
{
switch(g_CallstackOutputType)
{
case ACOutput_Advanced:
fprintf(fLogFile, "%lu: Line: %s(%lu) %+ld bytes\n", g_dwShowCount,
Line.FileName, Line.LineNumber, offsetFromLine );
break;
case ACOutput_Simple:
fprintf(fLogFile, "%lu: %s(%lu) %+ld bytes (%s)\n", g_dwShowCount,
Line.FileName, Line.LineNumber, offsetFromLine, undName);
break;
case ACOutput_XML:
_ftprintf(fLogFile, _T("<STACKENTRY "));
bXMLTagWrote = TRUE;
fprintf(fLogFile, "decl=\"%s\" decl_offset=\"%+ld\" ", SimpleXMLEncode(undName).c_str(), (long) offsetFromSymbol);
fprintf(fLogFile, "srcfile=\"%s\" line=\"%lu\" line_offset=\"%+ld\" ",
SimpleXMLEncode(Line.FileName).c_str(), Line.LineNumber, offsetFromLine, undName);
break;
}
}
} // yes, we have SymGetLineFromAddr()
// show module info (SymGetModuleInfo())
if ( (g_CallstackOutputType == ACOutput_Advanced) || (g_CallstackOutputType == ACOutput_XML) )
{
if ( ! pSGMI( hProcess, s.AddrPC.Offset, &Module ) )
{
if (g_CallstackOutputType == ACOutput_Advanced)
_ftprintf(fLogFile, _T("%lu: SymGetModuleInfo): GetLastError = %lu\n"), g_dwShowCount, gle );
}
else
{ // got module info OK
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;
/* // TODO: #if API_VERSION_NUMBER >= 9 ?
case SymDia:
strcpy( ty, "DIA" );
break;*/
default:
_snprintf( ty, sizeof ty, "symtype=%ld", (long) Module.SymType );
break;
}
if (g_CallstackOutputType == ACOutput_XML)
{
// now, check if the XML-Entry is written...
if (bXMLTagWrote == FALSE)
{
_ftprintf(fLogFile, _T("<STACKENTRY "));
bXMLTagWrote = TRUE;
fprintf(fLogFile, "decl=\"%s\" decl_offset=\"%+ld\" ", SimpleXMLEncode(undName).c_str(), (long) offsetFromSymbol);
_ftprintf(fLogFile, _T("srcfile=\"\" "));
bXMLTagWrote = TRUE;
}
}
if (g_CallstackOutputType == ACOutput_Advanced)
{
fprintf(fLogFile, "%lu: Mod: %s, base: %08lxh\n", g_dwShowCount,
Module.ModuleName, Module.BaseOfImage );
if (Module.SymType == SymNone) { // Gebe nur aus, wenn keine Symbole vorhanden sind!
_ftprintf(fLogFile, _T("%lu: Offset: 0x%8.8x\n"), g_dwShowCount, s.AddrPC.Offset);
fprintf(fLogFile, "%lu: Sym: type: %s, file: %s\n", g_dwShowCount,
ty, Module.LoadedImageName );
}
}
else
{
// XML:
if (bXMLTagWrote == TRUE)
fprintf(fLogFile, "module=\"%s\" base=\"%08lx\" ", Module.ModuleName, Module.BaseOfImage);
}
} // got module info OK
}
if ( (g_CallstackOutputType == ACOutput_XML) && (bXMLTagWrote == TRUE) )
_ftprintf(fLogFile, _T("/>\n")); // terminate the XML node
} // we seem to have a valid PC
// no return address means no deeper stackframe
if ( s.AddrReturn.Offset == 0 )
{
// avoid misunderstandings in the printf() following the loop
SetLastError( 0 );
break;
}
} // for ( frameNum )
if ( (g_CallstackOutputType != ACOutput_XML) && (gle != 0) )
_ftprintf(fLogFile, _T("\n%lu: StackWalk(): GetLastError = %lu\n"), g_dwShowCount, gle );
cleanup:
//if (pSym) free( pSym );
if (fLogFile) {
_ftprintf(fLogFile, _T("\n\n"));
if (g_dwShowCount % 1000)
fflush(fLogFile);
}
LeaveCriticalSection(&g_csFileOpenClose);
// Critical section end...
} // ShowStackRM
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