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eqemu-server/common/StackWalker/StackWalker.cpp
Knightly 7ab909ee47 Standardize Licensing 
- License was intended to be GPLv3 per earlier commit of GPLv3 LICENSE FILE
- This is confirmed by the inclusion of libraries that are incompatible with GPLv2
- This is also confirmed by KLS and the agreement of KLS's predecessors
- Added GPLv3 license headers to the compilable source files
- Removed Folly licensing in strings.h since the string functions do not match the Folly functions and are standard functions - this must have been left over from previous implementations
- Removed individual contributor license headers since the project has been under the "developer" mantle for many years
- Removed comments on files that were previously automatically generated since they've been manually modified multiple times and there are no automatic scripts referencing them (removed in 2023)
2026-04-01 17:09:57 -07:00

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/* EQEmu: EQEmulator
Copyright (C) 2001-2026 EQEmu Development Team
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**********************************************************************
*
* StackWalker.cpp
*
*
* History:
* 2005-07-27 v1 - First public release on http://www.codeproject.com/
* http://www.codeproject.com/threads/StackWalker.asp
* 2005-07-28 v2 - Changed the params of the constructor and ShowCallstack
* (to simplify the usage)
* 2005-08-01 v3 - Changed to use 'CONTEXT_FULL' instead of CONTEXT_ALL
* (should also be enough)
* - Changed to compile correctly with the PSDK of VC7.0
* (GetFileVersionInfoSizeA and GetFileVersionInfoA is wrongly defined:
* it uses LPSTR instead of LPCSTR as first paremeter)
* - Added declarations to support VC5/6 without using 'dbghelp.h'
* - Added a 'pUserData' member to the ShowCallstack function and the
* PReadProcessMemoryRoutine declaration (to pass some user-defined data,
* which can be used in the readMemoryFunction-callback)
* 2005-08-02 v4 - OnSymInit now also outputs the OS-Version by default
* - Added example for doing an exception-callstack-walking in main.cpp
* (thanks to owillebo: http://www.codeproject.com/script/profile/whos_who.asp?id=536268)
* 2005-08-05 v5 - Removed most Lint (http://www.gimpel.com/) errors... thanks to Okko Willeboordse!
*
**********************************************************************/
#ifdef _WINDOWS
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#pragma comment(lib, "version.lib") // for "VerQueryValue"
#include "StackWalker.h"
// If VC7 and later, then use the shipped 'dbghelp.h'-file
#if _MSC_VER >= 1300
#include <dbghelp.h>
#else
// inline the important dbghelp.h-declarations...
typedef enum {
SymNone = 0,
SymCoff,
SymCv,
SymPdb,
SymExport,
SymDeferred,
SymSym,
SymDia,
SymVirtual,
NumSymTypes
} SYM_TYPE;
typedef struct _IMAGEHLP_LINE64 {
DWORD SizeOfStruct; // set to sizeof(IMAGEHLP_LINE64)
PVOID Key; // internal
DWORD LineNumber; // line number in file
PCHAR FileName; // full filename
DWORD64 Address; // first instruction of line
} IMAGEHLP_LINE64, *PIMAGEHLP_LINE64;
typedef struct _IMAGEHLP_MODULE64 {
DWORD SizeOfStruct; // set to sizeof(IMAGEHLP_MODULE64)
DWORD64 BaseOfImage; // base load address of module
DWORD ImageSize; // virtual size of the loaded module
DWORD TimeDateStamp; // date/time stamp from pe header
DWORD CheckSum; // checksum from the pe header
DWORD NumSyms; // number of symbols in the symbol table
SYM_TYPE SymType; // type of symbols loaded
CHAR ModuleName[32]; // module name
CHAR ImageName[256]; // image name
CHAR LoadedImageName[256]; // symbol file name
} IMAGEHLP_MODULE64, *PIMAGEHLP_MODULE64;
typedef struct _IMAGEHLP_SYMBOL64 {
DWORD SizeOfStruct; // set to sizeof(IMAGEHLP_SYMBOL64)
DWORD64 Address; // virtual address including dll base address
DWORD Size; // estimated size of symbol, can be zero
DWORD Flags; // info about the symbols, see the SYMF defines
DWORD MaxNameLength; // maximum size of symbol name in 'Name'
CHAR Name[1]; // symbol name (null terminated string)
} IMAGEHLP_SYMBOL64, *PIMAGEHLP_SYMBOL64;
typedef enum {
AddrMode1616,
AddrMode1632,
AddrModeReal,
AddrModeFlat
} ADDRESS_MODE;
typedef struct _tagADDRESS64 {
DWORD64 Offset;
WORD Segment;
ADDRESS_MODE Mode;
} ADDRESS64, *LPADDRESS64;
typedef struct _KDHELP64 {
DWORD64 Thread;
DWORD ThCallbackStack;
DWORD ThCallbackBStore;
DWORD NextCallback;
DWORD FramePointer;
DWORD64 KiCallUserMode;
DWORD64 KeUserCallbackDispatcher;
DWORD64 SystemRangeStart;
DWORD64 Reserved[8];
} KDHELP64, *PKDHELP64;
typedef struct _tagSTACKFRAME64 {
ADDRESS64 AddrPC; // program counter
ADDRESS64 AddrReturn; // return address
ADDRESS64 AddrFrame; // frame pointer
ADDRESS64 AddrStack; // stack pointer
ADDRESS64 AddrBStore; // backing store pointer
PVOID FuncTableEntry; // pointer to pdata/fpo or nullptr
DWORD64 Params[4]; // possible arguments to the function
BOOL Far; // WOW far call
BOOL Virtual; // is this a virtual frame?
DWORD64 Reserved[3];
KDHELP64 KdHelp;
} STACKFRAME64, *LPSTACKFRAME64;
typedef
BOOL
(__stdcall *PREAD_PROCESS_MEMORY_ROUTINE64)(
HANDLE hProcess,
DWORD64 qwBaseAddress,
PVOID lpBuffer,
DWORD nSize,
LPDWORD lpNumberOfBytesRead
);
typedef
PVOID
(__stdcall *PFUNCTION_TABLE_ACCESS_ROUTINE64)(
HANDLE hProcess,
DWORD64 AddrBase
);
typedef
DWORD64
(__stdcall *PGET_MODULE_BASE_ROUTINE64)(
HANDLE hProcess,
DWORD64 Address
);
typedef
DWORD64
(__stdcall *PTRANSLATE_ADDRESS_ROUTINE64)(
HANDLE hProcess,
HANDLE hThread,
LPADDRESS64 lpaddr
);
#define SYMOPT_CASE_INSENSITIVE 0x00000001
#define SYMOPT_UNDNAME 0x00000002
#define SYMOPT_DEFERRED_LOADS 0x00000004
#define SYMOPT_NO_CPP 0x00000008
#define SYMOPT_LOAD_LINES 0x00000010
#define SYMOPT_OMAP_FIND_NEAREST 0x00000020
#define SYMOPT_LOAD_ANYTHING 0x00000040
#define SYMOPT_IGNORE_CVREC 0x00000080
#define SYMOPT_NO_UNQUALIFIED_LOADS 0x00000100
#define SYMOPT_FAIL_CRITICAL_ERRORS 0x00000200
#define SYMOPT_EXACT_SYMBOLS 0x00000400
#define SYMOPT_ALLOW_ABSOLUTE_SYMBOLS 0x00000800
#define SYMOPT_IGNORE_NT_SYMPATH 0x00001000
#define SYMOPT_INCLUDE_32BIT_MODULES 0x00002000
#define SYMOPT_PUBLICS_ONLY 0x00004000
#define SYMOPT_NO_PUBLICS 0x00008000
#define SYMOPT_AUTO_PUBLICS 0x00010000
#define SYMOPT_NO_IMAGE_SEARCH 0x00020000
#define SYMOPT_SECURE 0x00040000
#define SYMOPT_DEBUG 0x80000000
#define UNDNAME_COMPLETE (0x0000) // Enable full undecoration
#define UNDNAME_NAME_ONLY (0x1000) // Crack only the name for primary declaration;
#endif // _MSC_VER < 1300
// Some missing defines (for VC5/6):
#ifndef INVALID_FILE_ATTRIBUTES
#define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
#endif
// secure-CRT_functions are only available starting with VC8
#if _MSC_VER < 1400
#define strcpy_s strcpy
#define strcat_s(dst, len, src) strcat(dst, src)
#define _snprintf_s _snprintf
#define _tcscat_s _tcscat
#endif
// Normally it should be enough to use 'CONTEXT_FULL' (better would be 'CONTEXT_ALL')
#define USED_CONTEXT_FLAGS CONTEXT_FULL
class StackWalkerInternal
{
public:
StackWalkerInternal(StackWalker *parent, HANDLE hProcess)
{
m_parent = parent;
m_hDbhHelp = nullptr;
pSC = nullptr;
m_hProcess = hProcess;
m_szSymPath = nullptr;
pSFTA = nullptr;
pSGLFA = nullptr;
pSGMB = nullptr;
pSGMI = nullptr;
pSGO = nullptr;
pSGSFA = nullptr;
pSI = nullptr;
pSLM = nullptr;
pSSO = nullptr;
pSW = nullptr;
pUDSN = nullptr;
pSGSP = nullptr;
}
~StackWalkerInternal()
{
if (pSC != nullptr)
pSC(m_hProcess); // SymCleanup
if (m_hDbhHelp != nullptr)
FreeLibrary(m_hDbhHelp);
m_hDbhHelp = nullptr;
m_parent = nullptr;
if(m_szSymPath != nullptr)
free(m_szSymPath);
m_szSymPath = nullptr;
}
BOOL Init(LPCSTR szSymPath)
{
if (m_parent == nullptr)
return FALSE;
// Dynamically load the Entry-Points for dbghelp.dll:
// First try to load the newsest one from
TCHAR szTemp[4096];
// But before wqe do this, we first check if the ".local" file exists
if (GetModuleFileName(nullptr, szTemp, 4096) > 0)
{
_tcscat_s(szTemp, _T(".local"));
if (GetFileAttributes(szTemp) == INVALID_FILE_ATTRIBUTES)
{
// ".local" file does not exist, so we can try to load the dbghelp.dll from the "Debugging Tools for Windows"
if (GetEnvironmentVariable(_T("ProgramFiles"), szTemp, 4096) > 0)
{
_tcscat_s(szTemp, _T("\\Debugging Tools for Windows\\dbghelp.dll"));
// now check if the file exists:
if (GetFileAttributes(szTemp) != INVALID_FILE_ATTRIBUTES)
{
m_hDbhHelp = LoadLibrary(szTemp);
}
}
// Still not found? Then try to load the 64-Bit version:
if ( (m_hDbhHelp == nullptr) && (GetEnvironmentVariable(_T("ProgramFiles"), szTemp, 4096) > 0) )
{
_tcscat_s(szTemp, _T("\\Debugging Tools for Windows 64-Bit\\dbghelp.dll"));
if (GetFileAttributes(szTemp) != INVALID_FILE_ATTRIBUTES)
{
m_hDbhHelp = LoadLibrary(szTemp);
}
}
}
}
if (m_hDbhHelp == nullptr) // if not already loaded, try to load a default-one
m_hDbhHelp = LoadLibrary( _T("dbghelp.dll") );
if (m_hDbhHelp == nullptr)
return FALSE;
pSI = (tSI) GetProcAddress(m_hDbhHelp, "SymInitialize" );
pSC = (tSC) GetProcAddress(m_hDbhHelp, "SymCleanup" );
pSW = (tSW) GetProcAddress(m_hDbhHelp, "StackWalk64" );
pSGO = (tSGO) GetProcAddress(m_hDbhHelp, "SymGetOptions" );
pSSO = (tSSO) GetProcAddress(m_hDbhHelp, "SymSetOptions" );
pSFTA = (tSFTA) GetProcAddress(m_hDbhHelp, "SymFunctionTableAccess64" );
pSGLFA = (tSGLFA) GetProcAddress(m_hDbhHelp, "SymGetLineFromAddr64" );
pSGMB = (tSGMB) GetProcAddress(m_hDbhHelp, "SymGetModuleBase64" );
pSGMI = (tSGMI) GetProcAddress(m_hDbhHelp, "SymGetModuleInfo64" );
//pSGMI_V3 = (tSGMI_V3) GetProcAddress(m_hDbhHelp, "SymGetModuleInfo64" );
pSGSFA = (tSGSFA) GetProcAddress(m_hDbhHelp, "SymGetSymFromAddr64" );
pUDSN = (tUDSN) GetProcAddress(m_hDbhHelp, "UnDecorateSymbolName" );
pSLM = (tSLM) GetProcAddress(m_hDbhHelp, "SymLoadModule64" );
pSGSP =(tSGSP) GetProcAddress(m_hDbhHelp, "SymGetSearchPath" );
if ( pSC == nullptr || pSFTA == nullptr || pSGMB == nullptr || pSGMI == nullptr ||
pSGO == nullptr || pSGSFA == nullptr || pSI == nullptr || pSSO == nullptr ||
pSW == nullptr || pUDSN == nullptr || pSLM == nullptr )
{
FreeLibrary(m_hDbhHelp);
m_hDbhHelp = nullptr;
pSC = nullptr;
return FALSE;
}
// SymInitialize
if (szSymPath != nullptr)
m_szSymPath = _strdup(szSymPath);
if (this->pSI(m_hProcess, m_szSymPath, FALSE) == FALSE)
this->m_parent->OnDbgHelpErr("SymInitialize", GetLastError(), 0);
DWORD symOptions = this->pSGO(); // SymGetOptions
symOptions |= SYMOPT_LOAD_LINES;
symOptions |= SYMOPT_FAIL_CRITICAL_ERRORS;
//symOptions |= SYMOPT_NO_PROMPTS;
// SymSetOptions
symOptions = this->pSSO(symOptions);
char buf[StackWalker::STACKWALK_MAX_NAMELEN] = {0};
if (this->pSGSP != nullptr)
{
if (this->pSGSP(m_hProcess, buf, StackWalker::STACKWALK_MAX_NAMELEN) == FALSE)
this->m_parent->OnDbgHelpErr("SymGetSearchPath", GetLastError(), 0);
}
char szUserName[1024] = {0};
DWORD dwSize = 1024;
GetUserNameA(szUserName, &dwSize);
this->m_parent->OnSymInit(buf, symOptions, szUserName);
return TRUE;
}
StackWalker *m_parent;
HMODULE m_hDbhHelp;
HANDLE m_hProcess;
LPSTR m_szSymPath;
/*typedef struct IMAGEHLP_MODULE64_V3 {
DWORD SizeOfStruct; // set to sizeof(IMAGEHLP_MODULE64)
DWORD64 BaseOfImage; // base load address of module
DWORD ImageSize; // virtual size of the loaded module
DWORD TimeDateStamp; // date/time stamp from pe header
DWORD CheckSum; // checksum from the pe header
DWORD NumSyms; // number of symbols in the symbol table
SYM_TYPE SymType; // type of symbols loaded
CHAR ModuleName[32]; // module name
CHAR ImageName[256]; // image name
// new elements: 07-Jun-2002
CHAR LoadedImageName[256]; // symbol file name
CHAR LoadedPdbName[256]; // pdb file name
DWORD CVSig; // Signature of the CV record in the debug directories
CHAR CVData[MAX_PATH * 3]; // Contents of the CV record
DWORD PdbSig; // Signature of PDB
GUID PdbSig70; // Signature of PDB (VC 7 and up)
DWORD PdbAge; // DBI age of pdb
BOOL PdbUnmatched; // loaded an unmatched pdb
BOOL DbgUnmatched; // loaded an unmatched dbg
BOOL LineNumbers; // we have line number information
BOOL GlobalSymbols; // we have internal symbol information
BOOL TypeInfo; // we have type information
// new elements: 17-Dec-2003
BOOL SourceIndexed; // pdb supports source server
BOOL Publics; // contains public symbols
};
*/
typedef struct IMAGEHLP_MODULE64_V2 {
DWORD SizeOfStruct; // set to sizeof(IMAGEHLP_MODULE64)
DWORD64 BaseOfImage; // base load address of module
DWORD ImageSize; // virtual size of the loaded module
DWORD TimeDateStamp; // date/time stamp from pe header
DWORD CheckSum; // checksum from the pe header
DWORD NumSyms; // number of symbols in the symbol table
SYM_TYPE SymType; // type of symbols loaded
CHAR ModuleName[32]; // module name
CHAR ImageName[256]; // image name
CHAR LoadedImageName[256]; // symbol file name
};
// SymCleanup()
typedef BOOL (__stdcall *tSC)( IN HANDLE hProcess );
tSC pSC;
// SymFunctionTableAccess64()
typedef PVOID (__stdcall *tSFTA)( HANDLE hProcess, DWORD64 AddrBase );
tSFTA pSFTA;
// SymGetLineFromAddr64()
typedef BOOL (__stdcall *tSGLFA)( IN HANDLE hProcess, IN DWORD64 dwAddr,
OUT PDWORD pdwDisplacement, OUT PIMAGEHLP_LINE64 Line );
tSGLFA pSGLFA;
// SymGetModuleBase64()
typedef DWORD64 (__stdcall *tSGMB)( IN HANDLE hProcess, IN DWORD64 dwAddr );
tSGMB pSGMB;
// SymGetModuleInfo64()
typedef BOOL (__stdcall *tSGMI)( IN HANDLE hProcess, IN DWORD64 dwAddr, OUT IMAGEHLP_MODULE64_V2 *ModuleInfo );
tSGMI pSGMI;
// // SymGetModuleInfo64()
// typedef BOOL (__stdcall *tSGMI_V3)( IN HANDLE hProcess, IN DWORD64 dwAddr, OUT IMAGEHLP_MODULE64_V3 *ModuleInfo );
// tSGMI_V3 pSGMI_V3;
// SymGetOptions()
typedef DWORD (__stdcall *tSGO)( VOID );
tSGO pSGO;
// SymGetSymFromAddr64()
typedef BOOL (__stdcall *tSGSFA)( IN HANDLE hProcess, IN DWORD64 dwAddr,
OUT PDWORD64 pdwDisplacement, OUT PIMAGEHLP_SYMBOL64 Symbol );
tSGSFA pSGSFA;
// SymInitialize()
typedef BOOL (__stdcall *tSI)( IN HANDLE hProcess, IN PSTR UserSearchPath, IN BOOL fInvadeProcess );
tSI pSI;
// SymLoadModule64()
typedef DWORD64 (__stdcall *tSLM)( IN HANDLE hProcess, IN HANDLE hFile,
IN PSTR ImageName, IN PSTR ModuleName, IN DWORD64 BaseOfDll, IN DWORD SizeOfDll );
tSLM pSLM;
// SymSetOptions()
typedef DWORD (__stdcall *tSSO)( IN DWORD SymOptions );
tSSO pSSO;
// StackWalk64()
typedef BOOL (__stdcall *tSW)(
DWORD MachineType,
HANDLE hProcess,
HANDLE hThread,
LPSTACKFRAME64 StackFrame,
PVOID ContextRecord,
PREAD_PROCESS_MEMORY_ROUTINE64 ReadMemoryRoutine,
PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine,
PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine,
PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress );
tSW pSW;
// UnDecorateSymbolName()
typedef DWORD (__stdcall WINAPI *tUDSN)( PCSTR DecoratedName, PSTR UnDecoratedName,
DWORD UndecoratedLength, DWORD Flags );
tUDSN pUDSN;
typedef BOOL (__stdcall WINAPI *tSGSP)(HANDLE hProcess, PSTR SearchPath, DWORD SearchPathLength);
tSGSP pSGSP;
private:
// **************************************** 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 )
BOOL GetModuleListTH32(HANDLE hProcess, DWORD pid)
{
// 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 = nullptr;
tCT32S pCT32S = nullptr;
tM32F pM32F = nullptr;
tM32N pM32N = nullptr;
HANDLE hSnap;
MODULEENTRY32 me;
me.dwSize = sizeof(me);
BOOL keepGoing;
size_t i;
for (i = 0; i<(sizeof(dllname) / sizeof(dllname[0])); i++ )
{
hToolhelp = LoadLibrary( dllname[i] );
if (hToolhelp == nullptr)
continue;
pCT32S = (tCT32S) GetProcAddress(hToolhelp, "CreateToolhelp32Snapshot");
pM32F = (tM32F) GetProcAddress(hToolhelp, "Module32First");
pM32N = (tM32N) GetProcAddress(hToolhelp, "Module32Next");
if ( (pCT32S != nullptr) && (pM32F != nullptr) && (pM32N != nullptr) )
break; // found the functions!
FreeLibrary(hToolhelp);
hToolhelp = nullptr;
}
if (hToolhelp == nullptr)
return FALSE;
hSnap = pCT32S( TH32CS_SNAPMODULE, pid );
if (hSnap == (HANDLE) -1)
return FALSE;
keepGoing = !!pM32F( hSnap, &me );
int cnt = 0;
while (keepGoing)
{
this->LoadModule(hProcess, me.szExePath, me.szModule, (DWORD64) me.modBaseAddr, me.modBaseSize);
cnt++;
keepGoing = !!pM32N( hSnap, &me );
}
CloseHandle(hSnap);
FreeLibrary(hToolhelp);
if (cnt <= 0)
return FALSE;
return TRUE;
} // GetModuleListTH32
// **************************************** PSAPI ************************
typedef struct _MODULEINFO {
LPVOID lpBaseOfDll;
DWORD SizeOfImage;
LPVOID EntryPoint;
} MODULEINFO, *LPMODULEINFO;
BOOL GetModuleListPSAPI(HANDLE hProcess)
{
// 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 = nullptr;
char *tt2 = nullptr;
const SIZE_T TTBUFLEN = 8096;
int cnt = 0;
hPsapi = LoadLibrary( _T("psapi.dll") );
if (hPsapi == nullptr)
return FALSE;
pEPM = (tEPM) GetProcAddress( hPsapi, "EnumProcessModules" );
pGMFNE = (tGMFNE) GetProcAddress( hPsapi, "GetModuleFileNameExA" );
pGMBN = (tGMFNE) GetProcAddress( hPsapi, "GetModuleBaseNameA" );
pGMI = (tGMI) GetProcAddress( hPsapi, "GetModuleInformation" );
if ( (pEPM == nullptr) || (pGMFNE == nullptr) || (pGMBN == nullptr) || (pGMI == nullptr) )
{
// we couldn?t find all functions
FreeLibrary(hPsapi);
return FALSE;
}
hMods = (HMODULE*) malloc(sizeof(HMODULE) * (TTBUFLEN / sizeof HMODULE));
tt = (char*) malloc(sizeof(char) * TTBUFLEN);
tt2 = (char*) malloc(sizeof(char) * TTBUFLEN);
if ( (hMods == nullptr) || (tt == nullptr) || (tt2 == nullptr) )
goto cleanup;
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 );
// image file name
tt[0] = 0;
pGMFNE(hProcess, hMods[i], tt, TTBUFLEN );
// module name
tt2[0] = 0;
pGMBN(hProcess, hMods[i], tt2, TTBUFLEN );
DWORD dwRes = this->LoadModule(hProcess, tt, tt2, (DWORD64) mi.lpBaseOfDll, mi.SizeOfImage);
if (dwRes != ERROR_SUCCESS)
this->m_parent->OnDbgHelpErr("LoadModule", dwRes, 0);
cnt++;
}
cleanup:
if (hPsapi != nullptr) FreeLibrary(hPsapi);
if (tt2 != nullptr) free(tt2);
if (tt != nullptr) free(tt);
if (hMods != nullptr) free(hMods);
return cnt != 0;
} // GetModuleListPSAPI
DWORD LoadModule(HANDLE hProcess, LPCSTR img, LPCSTR mod, DWORD64 baseAddr, DWORD size)
{
CHAR *szImg = _strdup(img);
CHAR *szMod = _strdup(mod);
DWORD result = ERROR_SUCCESS;
if ( (szImg == nullptr) || (szMod == nullptr) )
result = ERROR_NOT_ENOUGH_MEMORY;
else
{
if (pSLM(hProcess, 0, szImg, szMod, baseAddr, size) == 0)
result = GetLastError();
}
ULONGLONG fileVersion = 0;
if ( (m_parent != nullptr) && (szImg != nullptr) )
{
// try to retrive the file-version:
if ( (this->m_parent->m_options & StackWalker::RetrieveFileVersion) != 0)
{
VS_FIXEDFILEINFO *fInfo = nullptr;
DWORD dwHandle;
DWORD dwSize = GetFileVersionInfoSizeA(szImg, &dwHandle);
if (dwSize > 0)
{
LPVOID vData = malloc(dwSize);
if (vData != nullptr)
{
if (GetFileVersionInfoA(szImg, dwHandle, dwSize, vData) != 0)
{
UINT len;
TCHAR szSubBlock[] = _T("\\");
if (VerQueryValue(vData, szSubBlock, (LPVOID*) &fInfo, &len) == 0)
fInfo = nullptr;
else
{
fileVersion = ((ULONGLONG)fInfo->dwFileVersionLS) + ((ULONGLONG)fInfo->dwFileVersionMS << 32);
}
}
free(vData);
}
}
}
// Retrive some additional-infos about the module
IMAGEHLP_MODULE64_V2 Module;
const char *szSymType = "-unknown-";
if (this->GetModuleInfo(hProcess, baseAddr, &Module) != FALSE)
{
switch(Module.SymType)
{
case SymNone:
szSymType = "-nosymbols-";
break;
case SymCoff:
szSymType = "COFF";
break;
case SymCv:
szSymType = "CV";
break;
case SymPdb:
szSymType = "PDB";
break;
case SymExport:
szSymType = "-exported-";
break;
case SymDeferred:
szSymType = "-deferred-";
break;
case SymSym:
szSymType = "SYM";
break;
case 8: //SymVirtual:
szSymType = "Virtual";
break;
case 9: // SymDia:
szSymType = "DIA";
break;
}
}
this->m_parent->OnLoadModule(img, mod, baseAddr, size, result, szSymType, Module.LoadedImageName, fileVersion);
}
if (szImg != nullptr) free(szImg);
if (szMod != nullptr) free(szMod);
return result;
}
public:
BOOL LoadModules(HANDLE hProcess, DWORD dwProcessId)
{
// first try toolhelp32
if (GetModuleListTH32(hProcess, dwProcessId))
return true;
// then try psapi
return GetModuleListPSAPI(hProcess);
}
BOOL GetModuleInfo(HANDLE hProcess, DWORD64 baseAddr, IMAGEHLP_MODULE64_V2 *pModuleInfo)
{
if(this->pSGMI == nullptr)
{
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
// First try to use the larger ModuleInfo-Structure
// memset(pModuleInfo, 0, sizeof(IMAGEHLP_MODULE64_V3));
// pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V3);
// if (this->pSGMI_V3 != nullptr)
// {
// if (this->pSGMI_V3(hProcess, baseAddr, pModuleInfo) != FALSE)
// return TRUE;
// // check if the parameter was wrong (size is bad...)
// if (GetLastError() != ERROR_INVALID_PARAMETER)
// return FALSE;
// }
// could not retrive the bigger structure, try with the smaller one (as defined in VC7.1)...
pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V2);
void *pData = malloc(4096); // reserve enough memory, so the bug in v6.3.5.1 does not lead to memory-overwrites...
if (pData == nullptr)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
memcpy(pData, pModuleInfo, sizeof(IMAGEHLP_MODULE64_V2));
if (this->pSGMI(hProcess, baseAddr, (IMAGEHLP_MODULE64_V2*) pData) != FALSE)
{
// only copy as much memory as is reserved...
memcpy(pModuleInfo, pData, sizeof(IMAGEHLP_MODULE64_V2));
pModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64_V2);
free(pData);
return TRUE;
}
free(pData);
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
};
// #############################################################
StackWalker::StackWalker(DWORD dwProcessId, HANDLE hProcess)
{
this->m_options = OptionsAll;
this->m_modulesLoaded = FALSE;
this->m_hProcess = hProcess;
this->m_sw = new StackWalkerInternal(this, this->m_hProcess);
this->m_dwProcessId = dwProcessId;
this->m_szSymPath = nullptr;
}
StackWalker::StackWalker(int options, LPCSTR szSymPath, DWORD dwProcessId, HANDLE hProcess)
{
this->m_options = options;
this->m_modulesLoaded = FALSE;
this->m_hProcess = hProcess;
this->m_sw = new StackWalkerInternal(this, this->m_hProcess);
this->m_dwProcessId = dwProcessId;
if (szSymPath != nullptr)
{
this->m_szSymPath = _strdup(szSymPath);
this->m_options |= SymBuildPath;
}
else
this->m_szSymPath = nullptr;
}
StackWalker::~StackWalker()
{
if (m_szSymPath != nullptr)
free(m_szSymPath);
m_szSymPath = nullptr;
if (this->m_sw != nullptr)
delete this->m_sw;
this->m_sw = nullptr;
}
BOOL StackWalker::LoadModules()
{
if (this->m_sw == nullptr)
{
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
if (m_modulesLoaded != FALSE)
return TRUE;
// Build the sym-path:
char *szSymPath = nullptr;
if ( (this->m_options & SymBuildPath) != 0)
{
const size_t nSymPathLen = 4096;
szSymPath = (char*) malloc(nSymPathLen);
if (szSymPath == nullptr)
{
SetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
szSymPath[0] = 0;
// Now first add the (optional) provided sympath:
if (this->m_szSymPath != nullptr)
{
strcat_s(szSymPath, nSymPathLen, this->m_szSymPath);
strcat_s(szSymPath, nSymPathLen, ";");
}
strcat_s(szSymPath, nSymPathLen, ".;");
const size_t nTempLen = 1024;
char szTemp[nTempLen];
// Now add the current directory:
if (GetCurrentDirectoryA(nTempLen, szTemp) > 0)
{
szTemp[nTempLen-1] = 0;
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
// Now add the path for the main-module:
if (GetModuleFileNameA(nullptr, szTemp, nTempLen) > 0)
{
szTemp[nTempLen-1] = 0;
for (char *p = (szTemp+strlen(szTemp)-1); p >= szTemp; --p)
{
// locate the rightmost path separator
if ( (*p == '\\') || (*p == '/') || (*p == ':') )
{
*p = 0;
break;
}
} // for (search for path separator...)
if (strlen(szTemp) > 0)
{
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
}
if (GetEnvironmentVariableA("_NT_SYMBOL_PATH", szTemp, nTempLen) > 0)
{
szTemp[nTempLen-1] = 0;
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
if (GetEnvironmentVariableA("_NT_ALTERNATE_SYMBOL_PATH", szTemp, nTempLen) > 0)
{
szTemp[nTempLen-1] = 0;
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
if (GetEnvironmentVariableA("SYSTEMROOT", szTemp, nTempLen) > 0)
{
szTemp[nTempLen-1] = 0;
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
// also add the "system32"-directory:
strcat_s(szTemp, nTempLen, "\\system32");
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, ";");
}
if ( (this->m_options & SymBuildPath) != 0)
{
if (GetEnvironmentVariableA("SYSTEMDRIVE", szTemp, nTempLen) > 0)
{
szTemp[nTempLen-1] = 0;
strcat_s(szSymPath, nSymPathLen, "SRV*");
strcat_s(szSymPath, nSymPathLen, szTemp);
strcat_s(szSymPath, nSymPathLen, "\\websymbols");
strcat_s(szSymPath, nSymPathLen, "*http://msdl.microsoft.com/download/symbols;");
}
else
strcat_s(szSymPath, nSymPathLen, "SRV*c:\\websymbols*http://msdl.microsoft.com/download/symbols;");
}
}
// First Init the whole stuff...
BOOL bRet = this->m_sw->Init(szSymPath);
if (szSymPath != nullptr) free(szSymPath); szSymPath = nullptr;
if (bRet == FALSE)
{
this->OnDbgHelpErr("Error while initializing dbghelp.dll", 0, 0);
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
bRet = this->m_sw->LoadModules(this->m_hProcess, this->m_dwProcessId);
if (bRet != FALSE)
m_modulesLoaded = TRUE;
return bRet;
}
// The following is used to pass the "userData"-Pointer to the user-provided readMemoryFunction
// This has to be done due to a problem with the "hProcess"-parameter in x64...
// Because this class is in no case multi-threading-enabled (because of the limitations
// of dbghelp.dll) it is "safe" to use a static-variable
static StackWalker::PReadProcessMemoryRoutine s_readMemoryFunction = nullptr;
static LPVOID s_readMemoryFunction_UserData = nullptr;
BOOL StackWalker::ShowCallstack(HANDLE hThread, const CONTEXT *context, PReadProcessMemoryRoutine readMemoryFunction, LPVOID pUserData)
{
CONTEXT c;;
CallstackEntry csEntry;
IMAGEHLP_SYMBOL64 *pSym = nullptr;
StackWalkerInternal::IMAGEHLP_MODULE64_V2 Module;
IMAGEHLP_LINE64 Line;
int frameNum;
if (m_modulesLoaded == FALSE)
this->LoadModules(); // ignore the result...
if (this->m_sw->m_hDbhHelp == nullptr)
{
SetLastError(ERROR_DLL_INIT_FAILED);
return FALSE;
}
s_readMemoryFunction = readMemoryFunction;
s_readMemoryFunction_UserData = pUserData;
if (context == nullptr)
{
// If no context is provided, capture the context
if (hThread == GetCurrentThread())
{
GET_CURRENT_CONTEXT(c, USED_CONTEXT_FLAGS);
}
else
{
SuspendThread(hThread);
memset(&c, 0, sizeof(CONTEXT));
c.ContextFlags = USED_CONTEXT_FLAGS;
if (GetThreadContext(hThread, &c) == FALSE)
{
ResumeThread(hThread);
return FALSE;
}
}
}
else
c = *context;
// init STACKFRAME for first call
STACKFRAME64 s; // in/out stackframe
memset(&s, 0, sizeof(s));
DWORD imageType;
#ifdef _M_IX86
// normally, call ImageNtHeader() and use machine info from PE header
imageType = IMAGE_FILE_MACHINE_I386;
s.AddrPC.Offset = c.Eip;
s.AddrPC.Mode = AddrModeFlat;
s.AddrFrame.Offset = c.Ebp;
s.AddrFrame.Mode = AddrModeFlat;
s.AddrStack.Offset = c.Esp;
s.AddrStack.Mode = AddrModeFlat;
#elif _M_X64
imageType = IMAGE_FILE_MACHINE_AMD64;
s.AddrPC.Offset = c.Rip;
s.AddrPC.Mode = AddrModeFlat;
s.AddrFrame.Offset = c.Rsp;
s.AddrFrame.Mode = AddrModeFlat;
s.AddrStack.Offset = c.Rsp;
s.AddrStack.Mode = AddrModeFlat;
#elif _M_IA64
imageType = IMAGE_FILE_MACHINE_IA64;
s.AddrPC.Offset = c.StIIP;
s.AddrPC.Mode = AddrModeFlat;
s.AddrFrame.Offset = c.IntSp;
s.AddrFrame.Mode = AddrModeFlat;
s.AddrBStore.Offset = c.RsBSP;
s.AddrBStore.Mode = AddrModeFlat;
s.AddrStack.Offset = c.IntSp;
s.AddrStack.Mode = AddrModeFlat;
#else
#error "Platform not supported!"
#endif
pSym = (IMAGEHLP_SYMBOL64 *) malloc(sizeof(IMAGEHLP_SYMBOL64) + STACKWALK_MAX_NAMELEN);
if (!pSym) goto cleanup; // not enough memory...
memset(pSym, 0, sizeof(IMAGEHLP_SYMBOL64) + STACKWALK_MAX_NAMELEN);
pSym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
pSym->MaxNameLength = STACKWALK_MAX_NAMELEN;
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 (StackWalk64(), SymFunctionTableAccess64(), SymGetModuleBase64())
// 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 ( ! this->m_sw->pSW(imageType, this->m_hProcess, hThread, &s, &c, myReadProcMem, this->m_sw->pSFTA, this->m_sw->pSGMB, nullptr) )
{
this->OnDbgHelpErr("StackWalk64", GetLastError(), s.AddrPC.Offset);
break;
}
csEntry.offset = s.AddrPC.Offset;
csEntry.name[0] = 0;
csEntry.undName[0] = 0;
csEntry.undFullName[0] = 0;
csEntry.offsetFromSmybol = 0;
csEntry.offsetFromLine = 0;
csEntry.lineFileName[0] = 0;
csEntry.lineNumber = 0;
csEntry.loadedImageName[0] = 0;
csEntry.moduleName[0] = 0;
if (s.AddrPC.Offset == s.AddrReturn.Offset)
{
this->OnDbgHelpErr("StackWalk64-Endless-Callstack!", 0, s.AddrPC.Offset);
break;
}
if (s.AddrPC.Offset != 0)
{
// we seem to have a valid PC
// show procedure info (SymGetSymFromAddr64())
if (this->m_sw->pSGSFA(this->m_hProcess, s.AddrPC.Offset, &(csEntry.offsetFromSmybol), pSym) != FALSE)
{
// TODO: Mache dies sicher...!
strcpy_s(csEntry.name, pSym->Name);
// UnDecorateSymbolName()
this->m_sw->pUDSN( pSym->Name, csEntry.undName, STACKWALK_MAX_NAMELEN, UNDNAME_NAME_ONLY );
this->m_sw->pUDSN( pSym->Name, csEntry.undFullName, STACKWALK_MAX_NAMELEN, UNDNAME_COMPLETE );
}
else
{
this->OnDbgHelpErr("SymGetSymFromAddr64", GetLastError(), s.AddrPC.Offset);
}
// show line number info, NT5.0-method (SymGetLineFromAddr64())
if (this->m_sw->pSGLFA != nullptr )
{ // yes, we have SymGetLineFromAddr64()
if (this->m_sw->pSGLFA(this->m_hProcess, s.AddrPC.Offset, &(csEntry.offsetFromLine), &Line) != FALSE)
{
csEntry.lineNumber = Line.LineNumber;
// TODO: Mache dies sicher...!
strcpy_s(csEntry.lineFileName, Line.FileName);
}
else
{
this->OnDbgHelpErr("SymGetLineFromAddr64", GetLastError(), s.AddrPC.Offset);
}
} // yes, we have SymGetLineFromAddr64()
// show module info (SymGetModuleInfo64())
if (this->m_sw->GetModuleInfo(this->m_hProcess, s.AddrPC.Offset, &Module ) != FALSE)
{ // got module info OK
switch ( Module.SymType )
{
case SymNone:
csEntry.symTypeString = "-nosymbols-";
break;
case SymCoff:
csEntry.symTypeString = "COFF";
break;
case SymCv:
csEntry.symTypeString = "CV";
break;
case SymPdb:
csEntry.symTypeString = "PDB";
break;
case SymExport:
csEntry.symTypeString = "-exported-";
break;
case SymDeferred:
csEntry.symTypeString = "-deferred-";
break;
case SymSym:
csEntry.symTypeString = "SYM";
break;
#if API_VERSION_NUMBER >= 9
case SymDia:
csEntry.symTypeString = "DIA";
break;
#endif
case 8: //SymVirtual:
csEntry.symTypeString = "Virtual";
break;
default:
//_snprintf( ty, sizeof ty, "symtype=%ld", (long) Module.SymType );
csEntry.symTypeString = nullptr;
break;
}
// TODO: Mache dies sicher...!
strcpy_s(csEntry.moduleName, Module.ModuleName);
csEntry.baseOfImage = Module.BaseOfImage;
strcpy_s(csEntry.loadedImageName, Module.LoadedImageName);
} // got module info OK
else
{
this->OnDbgHelpErr("SymGetModuleInfo64", GetLastError(), s.AddrPC.Offset);
}
} // we seem to have a valid PC
CallstackEntryType et = nextEntry;
if (frameNum == 0)
et = firstEntry;
this->OnCallstackEntry(et, csEntry);
if (s.AddrReturn.Offset == 0)
{
this->OnCallstackEntry(lastEntry, csEntry);
SetLastError(ERROR_SUCCESS);
break;
}
} // for ( frameNum )
cleanup:
if (pSym) free( pSym );
if (context == nullptr)
ResumeThread(hThread);
return TRUE;
}
BOOL __stdcall StackWalker::myReadProcMem(
HANDLE hProcess,
DWORD64 qwBaseAddress,
PVOID lpBuffer,
DWORD nSize,
LPDWORD lpNumberOfBytesRead
)
{
if (s_readMemoryFunction == nullptr)
{
SIZE_T st;
BOOL bRet = ReadProcessMemory(hProcess, (LPVOID) qwBaseAddress, lpBuffer, nSize, &st);
*lpNumberOfBytesRead = (DWORD) st;
return bRet;
}
else
{
return s_readMemoryFunction(hProcess, qwBaseAddress, lpBuffer, nSize, lpNumberOfBytesRead, s_readMemoryFunction_UserData);
}
}
void StackWalker::OnLoadModule(LPCSTR img, LPCSTR mod, DWORD64 baseAddr, DWORD size, DWORD result, LPCSTR symType, LPCSTR pdbName, ULONGLONG fileVersion)
{
CHAR buffer[STACKWALK_MAX_NAMELEN];
if (fileVersion == 0)
_snprintf_s(buffer, STACKWALK_MAX_NAMELEN, "%s:%s (%p), size: %d (result: %d), SymType: '%s', PDB: '%s'\n", img, mod, (LPVOID) baseAddr, size, result, symType, pdbName);
else
{
DWORD v4 = (DWORD) fileVersion & 0xFFFF;
DWORD v3 = (DWORD) (fileVersion>>16) & 0xFFFF;
DWORD v2 = (DWORD) (fileVersion>>32) & 0xFFFF;
DWORD v1 = (DWORD) (fileVersion>>48) & 0xFFFF;
_snprintf_s(buffer, STACKWALK_MAX_NAMELEN, "%s:%s (%p), size: %d (result: %d), SymType: '%s', PDB: '%s', fileVersion: %d.%d.%d.%d\n", img, mod, (LPVOID) baseAddr, size, result, symType, pdbName, v1, v2, v3, v4);
}
OnOutput(buffer);
}
void StackWalker::OnCallstackEntry(CallstackEntryType eType, CallstackEntry &entry)
{
CHAR buffer[STACKWALK_MAX_NAMELEN];
if ( (eType != lastEntry) && (entry.offset != 0) )
{
if (entry.name[0] == 0)
strcpy_s(entry.name, "(function-name not available)");
if (entry.undName[0] != 0)
strcpy_s(entry.name, entry.undName);
if (entry.undFullName[0] != 0)
strcpy_s(entry.name, entry.undFullName);
if (entry.lineFileName[0] == 0)
{
strcpy_s(entry.lineFileName, "(filename not available)");
if (entry.moduleName[0] == 0)
strcpy_s(entry.moduleName, "(module-name not available)");
_snprintf_s(buffer, STACKWALK_MAX_NAMELEN, "%p (%s): %s: %s\n", (LPVOID) entry.offset, entry.moduleName, entry.lineFileName, entry.name);
}
else
_snprintf_s(buffer, STACKWALK_MAX_NAMELEN, "%s (%d): %s\n", entry.lineFileName, entry.lineNumber, entry.name);
OnOutput(buffer);
}
}
void StackWalker::OnDbgHelpErr(LPCSTR szFuncName, DWORD gle, DWORD64 addr)
{
CHAR buffer[STACKWALK_MAX_NAMELEN];
_snprintf_s(buffer, STACKWALK_MAX_NAMELEN, "ERROR: %s, GetLastError: %d (Address: %p)\n", szFuncName, gle, (LPVOID) addr);
OnOutput(buffer);
}
void StackWalker::OnSymInit(LPCSTR szSearchPath, DWORD symOptions, LPCSTR szUserName)
{
CHAR buffer[STACKWALK_MAX_NAMELEN];
_snprintf_s(buffer, STACKWALK_MAX_NAMELEN, "SymInit: Symbol-SearchPath: '%s', symOptions: %d, UserName: '%s'\n", szSearchPath, symOptions, szUserName);
OnOutput(buffer);
// Also display the OS-version
#if _MSC_VER <= 1200
OSVERSIONINFOA ver;
ZeroMemory(&ver, sizeof(OSVERSIONINFOA));
ver.dwOSVersionInfoSize = sizeof(ver);
if (GetVersionExA(&ver) != FALSE)
{
_snprintf_s(buffer, STACKWALK_MAX_NAMELEN, "OS-Version: %d.%d.%d (%s)\n",
ver.dwMajorVersion, ver.dwMinorVersion, ver.dwBuildNumber,
ver.szCSDVersion);
OnOutput(buffer);
}
#else
OSVERSIONINFOEXA ver;
ZeroMemory(&ver, sizeof(OSVERSIONINFOEXA));
ver.dwOSVersionInfoSize = sizeof(ver);
if (GetVersionExA( (OSVERSIONINFOA*) &ver) != FALSE)
{
_snprintf_s(buffer, STACKWALK_MAX_NAMELEN, "OS-Version: %d.%d.%d (%s) 0x%x-0x%x\n",
ver.dwMajorVersion, ver.dwMinorVersion, ver.dwBuildNumber,
ver.szCSDVersion, ver.wSuiteMask, ver.wProductType);
OnOutput(buffer);
}
#endif
}
void StackWalker::OnOutput(LPCSTR buffer)
{
OutputDebugStringA(buffer);
}
#endif
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