/**
 * @file symbol-parser.cpp
 * @author Alee Amini (alee@hyperdbg.org)
 * @author Sina Karvandi (sina@hyperdbg.org)
 * @brief symbol parser
 * @details
 * @version 0.1
 * @date 2021-05-29
 *
 * @copyright This project is released under the GNU Public License v3.
 *
 */
#include "pch.h"

#include "header/pdb-identity.h"

//
// Global Variables
//
std::vector<PSYMBOL_LOADED_MODULE_DETAILS> g_LoadedModules;
BOOLEAN                                    g_IsLoadedModulesInitialized = FALSE;
BOOLEAN                                    g_AbortLoadingExecution      = FALSE;
CHAR *                                     g_CurrentModuleName          = NULL;
PVOID                                      g_MessageHandler             = NULL;
SymbolMapCallback                          g_SymbolMapForDisassembler   = NULL;

/**
 * @brief Reads the contents of a file into a byte vector
 *
 * @param LocalFilePath The path to the local file to read
 * @param FileBytes An output reference to a vector that will receive the file bytes on success; will be cleared on failure
 *
 * @return BOOLEAN TRUE if the file was successfully read, FALSE on failure (e.g. file not found, access denied, read error)
 */
static BOOLEAN
SymReadFileBytes(const char * LocalFilePath, std::vector<BYTE> & FileBytes)
{
    FileBytes.clear();

    if (LocalFilePath == NULL)
    {
        return FALSE;
    }

    HANDLE FileHandle = CreateFileA(LocalFilePath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
    if (FileHandle == INVALID_HANDLE_VALUE)
    {
        return FALSE;
    }

    LARGE_INTEGER FileSize = {0};
    if (!GetFileSizeEx(FileHandle, &FileSize) || FileSize.QuadPart <= 0 || (ULONGLONG)FileSize.QuadPart > FileBytes.max_size())
    {
        CloseHandle(FileHandle);
        return FALSE;
    }

    FileBytes.resize((SIZE_T)FileSize.QuadPart);

    BYTE * WriteCursor = FileBytes.data();
    SIZE_T Remaining   = FileBytes.size();
    while (Remaining != 0)
    {
        DWORD ChunkSize = Remaining > MAXDWORD ? MAXDWORD : (DWORD)Remaining;
        DWORD BytesRead = 0;

        if (!ReadFile(FileHandle, WriteCursor, ChunkSize, &BytesRead, NULL) || BytesRead == 0)
        {
            CloseHandle(FileHandle);
            FileBytes.clear();
            return FALSE;
        }

        WriteCursor += BytesRead;
        Remaining -= BytesRead;
    }

    CloseHandle(FileHandle);
    return TRUE;
}

/**
 * @brief Fallback callback function to retrieve PDB file name, GUID, and age information using SymSrvGetFileIndexInfo when the primary extractor fails
 *
 * @param Context A context pointer that is expected to be a string representing the file path to query with SymSrvGetFileIndexInfo
 * @param PdbFile An output buffer to receive the base name of the PDB file extracted from SymSrvGetFileIndexInfo. Must be at least PdbFileSize bytes
 * @param PdbFileSize The size of the PdbFile buffer in bytes
 * @param Guid An output pointer to receive the GUID extracted from SymSrvGetFileIndexInfo
 * @param Age An output pointer to receive the age extracted from SymSrvGetFileIndexInfo
 *
 * @return BOOLEAN TRUE if the information was successfully retrieved and output buffers were filled as requested, FALSE otherwise (e.g., if Context is invalid or SymSrvGetFileIndexInfo fails)
 */
static BOOLEAN
SymSrvGetFileIndexInfoFallback(PVOID Context, CHAR * PdbFile, SIZE_T PdbFileSize, GUID * Guid, DWORD * Age)
{
    SYMSRV_INDEX_INFO SymInfo = {0};
    SymInfo.sizeofstruct      = sizeof(SYMSRV_INDEX_INFO);

    if (Context == NULL || PdbFile == NULL || Guid == NULL || Age == NULL)
    {
        return FALSE;
    }

    if (!SymSrvGetFileIndexInfo((const char *)Context, &SymInfo, 0))
    {
        return FALSE;
    }

    if (FAILED(StringCchCopyA(PdbFile, PdbFileSize, SymInfo.pdbfile)))
    {
        return FALSE;
    }

    *Guid = SymInfo.guid;
    *Age  = SymInfo.age;

    return TRUE;
}

/**
 * @brief Set the function callback that will be called if any message
 * needs to be shown
 *
 * @param Handler Function that handles the messages
 */
void
SymSetTextMessageCallback(PVOID Handler)
{
    g_MessageHandler = Handler;

    //
    // Set the pdbex's message handler
    //
    pdbex_set_logging_method_export(Handler);
}

/**
 * @brief Show messages
 *
 * @param Fmt format string message
 */
VOID
ShowMessages(const char * Fmt, ...)
{
    va_list ArgList;
    va_list Args;

    if (g_MessageHandler == NULL)
    {
        va_start(Args, Fmt);
        vprintf(Fmt, Args);
        va_end(Args);
    }
    else
    {
        char TempMessage[COMMUNICATION_BUFFER_SIZE + TCP_END_OF_BUFFER_CHARS_COUNT] = {0};
        va_start(ArgList, Fmt);
        INT SprintfResult = vsprintf_s(TempMessage, Fmt, ArgList);
        va_end(ArgList);

        if (SprintfResult != -1)
        {
            //
            // There is another handler
            //
            ((SendMessageWithParamCallback)g_MessageHandler)(TempMessage);
        }
    }
}

/**
 * @brief Interpret and find module base, based on module name
 * @param SearchMask the search mask to find module
 * @param SetModuleNameGlobally whether to set module name globally
 *
 * @return PSYMBOL_LOADED_MODULE_DETAILS NULL means error or not found,
 * otherwise it returns the instance of loaded module based on search mask
 */
PSYMBOL_LOADED_MODULE_DETAILS
SymGetModuleBaseFromSearchMask(const char * SearchMask, BOOLEAN SetModuleNameGlobally)
{
    string Token;
    char   ModuleName[_MAX_FNAME] = {0};
    int    Index                  = 0;
    char   Ch                     = '\0';

    if (!g_IsLoadedModulesInitialized || SearchMask == NULL)
    {
        //
        // no module is loaded or search mask is invalid
        //
        return NULL;
    }

    //
    // Convert search mask to string
    //
    string SearchMaskString(SearchMask);

    //
    // Check if the string contains '!'
    //
    char Delimiter = '!';
    if (SearchMaskString.find(Delimiter) != std::string::npos)
    {
        //
        // Found
        //
        Token = SearchMaskString.substr(0, SearchMaskString.find(Delimiter));

        strcpy(ModuleName, Token.c_str());

        if (ModuleName[0] == '\0')
        {
            //
            // Invalid name
            //
            return NULL;
        }

        //
        // Convert module name to lowercase
        //
        while (ModuleName[Index])
        {
            Ch = ModuleName[Index];

            //
            // convert ch to lowercase using toLower()
            //
            ModuleName[Index] = tolower(Ch);

            Index++;
        }
    }
    else
    {
        //
        // There is no '!' in the middle of the search mask so,
        // we assume that the module is nt
        //
        RtlZeroMemory(ModuleName, _MAX_FNAME);

        ModuleName[0] = 'n';
        ModuleName[1] = 't';
    }

    //
    // ************* Interpret based on remarks type name *************
    //
    for (auto item : g_LoadedModules)
    {
        //
        // Check for the module name
        //
        if (strcmp((const char *)item->ModuleName, ModuleName) == 0)
        {
            if (SetModuleNameGlobally)
            {
                g_CurrentModuleName = (char *)item->ModuleName;
            }

            return item;
        }

        //
        // Check for alternative module name
        //
        if (strcmp((const char *)item->ModuleAlternativeName, ModuleName) == 0)
        {
            if (SetModuleNameGlobally)
            {
                g_CurrentModuleName = (char *)item->ModuleAlternativeName;
            }

            return item;
        }
    }

    //
    // If the function continues until here then it means
    // that the module not found
    //
    return NULL;
}

/**
 * @brief Get the offset of a field from the top of a structure
 * @param Base
 * @param TypeName
 * @param FieldName
 * @param FieldOffset
 * @details This function is derived from: https://github.com/0vercl0k/sic/blob/master/src/sic/sym.cc
 *
 * @return BOOLEAN Whether the module is found successfully or not
 */
BOOLEAN
SymGetFieldOffsetFromModule(UINT64 Base, WCHAR * TypeName, WCHAR * FieldName, UINT32 * FieldOffset)
{
    BOOLEAN Found = FALSE;

    //
    // Allocate a buffer to back the SYMBOL_INFO structure
    //
    const DWORD SizeOfStruct =
        sizeof(SYMBOL_INFOW) + ((MAX_SYM_NAME - 1) * sizeof(wchar_t));
    UINT8 SymbolInfoBuffer[SizeOfStruct];
    auto  SymbolInfo = PSYMBOL_INFOW(SymbolInfoBuffer);

    //
    // Initialize the fields that need initialization
    //
    SymbolInfo->SizeOfStruct = sizeof(SYMBOL_INFOW);
    SymbolInfo->MaxNameLen   = MAX_SYM_NAME;

    //
    // Retrieve a type index for the type we're after
    //
    if (!SymGetTypeFromNameW(GetCurrentProcess(), Base, TypeName, SymbolInfo))
    {
        // ShowMessages("err, SymGetTypeFromName failed (%x)\n",
        //              GetLastError());
        return FALSE;
    }

    //
    // Now that we have a type, we need to enumerate its children to find the
    // field we're after. First step is to get the number of children
    //
    const ULONG TypeIndex     = SymbolInfo->TypeIndex;
    DWORD       ChildrenCount = 0;
    if (!SymGetTypeInfo(GetCurrentProcess(), Base, TypeIndex, TI_GET_CHILDRENCOUNT, &ChildrenCount))
    {
        // ShowMessages("err, SymGetTypeInfo failed (%x)\n",
        //              GetLastError());
        return FALSE;
    }

    //
    // Allocate enough memory to receive the children ids
    //
    auto FindChildrenParamsBacking = std::make_unique<UINT8[]>(
        sizeof(_TI_FINDCHILDREN_PARAMS) + ((ChildrenCount - 1) * sizeof(ULONG)));
    auto FindChildrenParams =
        (_TI_FINDCHILDREN_PARAMS *)FindChildrenParamsBacking.get();

    //
    // Initialize the structure with the children count
    //
    FindChildrenParams->Count = ChildrenCount;

    //
    // Get all the children ids
    //
    if (!SymGetTypeInfo(GetCurrentProcess(), Base, TypeIndex, TI_FINDCHILDREN, FindChildrenParams))
    {
        // ShowMessages("err, SymGetTypeInfo failed (%x)\n",
        //             GetLastError());
        return FALSE;
    }

    //
    // Now that we have all the ids, we can walk them and find the one that
    // matches the field we're looking for
    //

    for (DWORD ChildIdx = 0; ChildIdx < ChildrenCount; ChildIdx++)
    {
        //
        // Grab the child name
        //
        const ULONG ChildId   = FindChildrenParams->ChildId[ChildIdx];
        WCHAR *     ChildName = nullptr;
        SymGetTypeInfo(GetCurrentProcess(), Base, ChildId, TI_GET_SYMNAME, &ChildName);

        //
        // Grab the child size - this is useful to know if a field is a bit or a
        // normal field
        //
        UINT64 ChildSize = 0;
        SymGetTypeInfo(GetCurrentProcess(), Base, ChildId, TI_GET_LENGTH, &ChildSize);

        //
        // Does this child's name match the field we're looking for?
        //
        Found = FALSE;
        if (wcscmp(ChildName, FieldName) == 0)
        {
            //
            // If we have found the field, now we need to find its offset if
            // it's a normal field, or its bit position if it is a bit
            //
            const IMAGEHLP_SYMBOL_TYPE_INFO Info =
                (ChildSize == 1) ? TI_GET_BITPOSITION : TI_GET_OFFSET;
            SymGetTypeInfo(GetCurrentProcess(), Base, ChildId, Info, FieldOffset);

            Found = TRUE;
        }

        //
        // Even if we have found a match, we need to clean up the memory
        //
        LocalFree(ChildName);
        ChildName = nullptr;

        //
        // We can now break out of the loop if we have what we came looking for
        //
        if (Found)
        {
            break;
        }
    }

    return Found;
}

/**
 * @brief Get the size of a data type (structure)
 * @param Base
 * @param TypeName
 * @param TypeSize
 *
 * @return BOOLEAN Whether the module is found successfully or not
 */
BOOLEAN
SymGetDataTypeSizeFromModule(UINT64 Base, WCHAR * TypeName, UINT64 * TypeSize)
{
    //
    // Allocate a buffer to back the SYMBOL_INFO structure
    //
    const DWORD SizeOfStruct =
        sizeof(SYMBOL_INFOW) + ((MAX_SYM_NAME - 1) * sizeof(wchar_t));
    UINT8 SymbolInfoBuffer[SizeOfStruct];
    auto  SymbolInfo = PSYMBOL_INFOW(SymbolInfoBuffer);

    //
    // Initialize the fields that need initialization
    //
    SymbolInfo->SizeOfStruct = sizeof(SYMBOL_INFOW);
    SymbolInfo->MaxNameLen   = MAX_SYM_NAME;

    //
    // Retrieve a type index for the type we're after
    //
    if (!SymGetTypeFromNameW(GetCurrentProcess(), Base, TypeName, SymbolInfo))
    {
        // ShowMessages("err, SymGetTypeFromName failed (%x)\n",
        //              GetLastError());
        return FALSE;
    }

    if (!SymGetTypeInfo(GetCurrentProcess(), Base, SymbolInfo->TypeIndex, TI_GET_LENGTH, TypeSize))
    {
        // ShowMessages("err, SymGetTypeInfo failed (%x)\n",
        //              GetLastError());
        return FALSE;
    }

    // ShowMessages("type size : %llx\n", TypeSize);

    return TRUE;
}

/**
 * @brief initialize the DbgHelp symbols
 *
 * @return BOOLEAN
 */
BOOLEAN
SymInit()
{
    BOOL  Ret     = FALSE;
    DWORD Options = 0;

    //
    // Get options
    //
    Options = SymGetOptions();

    //
    // SYMOPT_DEBUG option asks DbgHelp to print additional troubleshooting
    // messages to debug output - use the debugger's Debug Output window
    // to view the messages
    //
    Options |= SYMOPT_DEBUG;
    Options |= SYMOPT_CASE_INSENSITIVE;
    SymSetOptions(Options);

    //
    // Initialize DbgHelp and load symbols for all modules of the current process
    //
    Ret = SymInitialize(
        GetCurrentProcess(), // Process handle of the current process
        NULL,                // No user-defined search path -> use default
        FALSE                // Do not load symbols for modules in the current process
    );

    if (!Ret)
    {
        ShowMessages("err, symbol init failed (%x)\n",
                     GetLastError());
        return FALSE;
    }

    //
    // Indicate that at least one module is loaded
    //
    g_IsLoadedModulesInitialized = TRUE;

    return TRUE;
}

/**
 * @brief Remove wow64 extension to the module names
 *
 * @param ModuleAddress
 * @param PdbFileName
 *
 * @return BOOLEAN
 */
BOOLEAN
SymCheckAndRemoveWow64Prefix(const char * ModuleAddress, const char * PdbFileName, std::string & CustomModuleName)
{
    char ModuleName[_MAX_FNAME]    = {0};
    char PdbModuleName[_MAX_FNAME] = {0};

    //
    // Determine the name of the file
    //
    _splitpath(ModuleAddress, NULL, NULL, ModuleName, NULL);
    _splitpath(PdbFileName, NULL, NULL, PdbModuleName, NULL);

    //
    // Convert ModuleName to lowercase
    //
    std::transform(ModuleName, ModuleName + strlen(ModuleName), ModuleName, [](unsigned char c) { return std::tolower(c); });

    //
    // Convert PdbModuleName to lowercase
    //
    std::transform(PdbModuleName, PdbModuleName + strlen(PdbModuleName), PdbModuleName, [](unsigned char c) { return std::tolower(c); });

    //
    // Compare the lowercase strings
    //
    if (std::strcmp(ModuleName, PdbModuleName) == 0)
    {
        return FALSE;
    }
    else
    {
        // Convert ModuleAddress to lowercase
        std::string LowerModuleAddress(ModuleAddress);
        std::transform(LowerModuleAddress.begin(), LowerModuleAddress.end(), LowerModuleAddress.begin(), [](unsigned char c) { return std::tolower(c); });

        if (PdbModuleName[0] == 'w' && LowerModuleAddress.find(":\\windows\\system32") != std::string::npos)
        {
            //
            // Set CustomModuleName to lowercase ModuleName
            //
            CustomModuleName = std::string(ModuleName);

            return TRUE;
        }
        else
        {
            return FALSE;
        }
    }
}

/**
 * @brief Check for alternative name of ntoskrn;
 *
 * @param PdbFileName
 * @param CustomModuleName
 *
 * @return BOOLEAN
 */
BOOLEAN
SymCheckNtoskrnlPrefix(const char * PdbFileName, std::string & CustomModuleName)
{
    char PdbModuleName[_MAX_FNAME] = {0};

    //
    // Determine the name of the file
    //
    _splitpath(PdbFileName, NULL, NULL, PdbModuleName, NULL);

    //
    // Convert PdbModuleName to lowercase
    //
    std::transform(PdbModuleName, PdbModuleName + strlen(PdbModuleName), PdbModuleName, [](unsigned char c) { return std::tolower(c); });

    //
    // Is it "nt" module or not
    //
    // Names of kernel
    //     NTOSKRNL.EXE : 1 CPU
    //     NTKRNLMP.EXE : N CPU, SMP
    //     NTKRNLPA.EXE : 1 CPU, PAE
    //     NTKRPAMP.EXE : N CPU SMP, PAE
    //
    if (strcmp(PdbModuleName, ("ntkrnlmp")) == 0 || strcmp(PdbModuleName, ("ntoskrnl")) == 0 ||
        strcmp(PdbModuleName, ("ntkrpamp")) == 0 || strcmp(PdbModuleName, ("ntkrnlpa")) == 0)
    {
        CustomModuleName = "nt";
        return TRUE;
    }

    //
    // Not nt module
    //
    return FALSE;
}

/**
 * @brief load symbol based on a file name and GUID
 *
 * @param BaseAddress
 * @param PdbFileName
 * @param CustomModuleName
 *
 * @return UINT32
 */
UINT32
SymLoadFileSymbol(UINT64 BaseAddress, const char * PdbFileName, const char * CustomModuleName)
{
    DWORD                         FileSize                        = 0;
    int                           Index                           = 0;
    char                          Ch                              = '\0';
    char                          ModuleName[_MAX_FNAME]          = {0};
    char                          AlternateModuleName[_MAX_FNAME] = {0};
    PSYMBOL_LOADED_MODULE_DETAILS ModuleDetails                   = NULL;

    //
    // Check if the loaded modules are initialized or not
    //
    if (!g_IsLoadedModulesInitialized)
    {
        //
        // Initialize the symbol table
        //
        SymInit();
    }

    //
    // Determine the base address and the file size
    //
    if (!SymGetFileParams(PdbFileName, FileSize))
    {
        ShowMessages("err, cannot obtain file parameters (internal error)\n");
        return -1;
    }

    //
    // Determine the name of the file
    //
    _splitpath(PdbFileName, NULL, NULL, ModuleName, NULL);

    //
    // Move to alternate list
    //
    strcpy(AlternateModuleName, ModuleName);

    //
    // Convert module name to lowercase
    //
    while (ModuleName[Index])
    {
        Ch = ModuleName[Index];

        //
        // convert ch to lowercase using toLower()
        //
        ModuleName[Index] = tolower(Ch);

        Index++;
    }

    //
    // Allocate buffer to store the details
    //
    ModuleDetails = (SYMBOL_LOADED_MODULE_DETAILS *)malloc(sizeof(SYMBOL_LOADED_MODULE_DETAILS));

    if (ModuleDetails == NULL)
    {
        ShowMessages("err, allocating buffer for storing symbol details (%x)\n",
                     GetLastError());
        return -1;
    }

    RtlZeroMemory(ModuleDetails, sizeof(SYMBOL_LOADED_MODULE_DETAILS));

    ModuleDetails->ModuleBase = SymLoadModule64(
        GetCurrentProcess(), // Process handle of the current process
        NULL,                // Handle to the module's image file (not needed)
        PdbFileName,         // Path/name of the file
        NULL,                // User-defined short name of the module (it can be NULL)
        BaseAddress,         // Base address of the module (cannot be NULL if .PDB file is
                             // used, otherwise it can be NULL)
        FileSize             // Size of the file (cannot be NULL if .PDB file is used,
                             // otherwise it can be NULL)
    );

    if (ModuleDetails->ModuleBase == NULL)
    {
        ShowMessages("err, loading symbols failed (%x)\n",
                     GetLastError());

        free(ModuleDetails);
        return -1;
    }

#ifndef DoNotShowDetailedResult

    //
    // Load symbols for the module
    //
    ShowMessages("loading symbols for: %s\n", PdbFilePath);

    ShowMessages("load address: %I64x\n", ModuleDetails.ModuleBase);

    //
    // Obtain and display information about loaded symbols
    //
    SymShowSymbolInfo(ModuleDetails.ModuleBase);

#endif // !DoNotShowDetailedResult

    //
    // Make the details (to save)
    //
    ModuleDetails->BaseAddress = BaseAddress;
    strcpy((char *)ModuleDetails->ModuleName, ModuleName);
    strcpy((char *)ModuleDetails->PdbFilePath, PdbFileName);

    //
    // Save the custom module name (if any)
    //
    if (CustomModuleName != NULL)
    {
        strcpy((char *)ModuleDetails->ModuleAlternativeName, CustomModuleName);
    }

    //
    // Save it
    //
    g_LoadedModules.push_back(ModuleDetails);

    return 0;
}

/**
 * @brief Unload one module symbol
 *
 * @param ModuleName
 *
 * @return UINT32
 */
UINT32
SymUnloadModuleSymbol(char * ModuleName)
{
    BOOLEAN OneModuleFound = FALSE;
    BOOL    Ret            = FALSE;
    UINT32  Index          = 0;

    for (auto item : g_LoadedModules)
    {
        Index++;

        if (strcmp(item->ModuleName, ModuleName) == 0 || strcmp(item->ModuleAlternativeName, ModuleName) == 0)
        {
            //
            // Unload symbol for the module
            //
            Ret = SymUnloadModule64(GetCurrentProcess(), item->ModuleBase);

            if (!Ret)
            {
                ShowMessages("err, unload symbol failed (%x)\n",
                             GetLastError());
                return -1;
            }

            OneModuleFound = TRUE;

            free(item);

            break;
        }
    }

    if (!OneModuleFound)
    {
        //
        // Not found
        //
        return -1;
    }

    //
    // Remove it from the vector
    //
    std::vector<PSYMBOL_LOADED_MODULE_DETAILS>::iterator it = g_LoadedModules.begin();
    std::advance(it, --Index);
    g_LoadedModules.erase(it);

    //
    // Success
    //
    return 0;
}

/**
 * @brief Unload all the symbols
 *
 * @return UINT32
 */
UINT32
SymUnloadAllSymbols()
{
    BOOL    Ret              = FALSE;
    BOOLEAN IsAnythingLoaded = FALSE;

    //
    // Check if it's already initialized
    //
    if (!g_IsLoadedModulesInitialized)
    {
        return 0;
    }

    for (auto item : g_LoadedModules)
    {
        //
        // At least one module is loaded
        //
        IsAnythingLoaded = TRUE;

        //
        // Unload symbols for the module
        //
        Ret = SymUnloadModule64(GetCurrentProcess(), item->ModuleBase);

        if (!Ret)
        {
            // ShowMessages("err, unload symbol failed (%x)\n",
            //              GetLastError());
        }

        free(item);
    }

    //
    // Check if there is at least one module is loaded
    //
    if (!IsAnythingLoaded)
    {
        //
        // Nothing is loaded yet!
        //
        return 0;
    }

    //
    // Clear the list
    //
    g_LoadedModules.clear();

    //
    // Uninitialize DbgHelp
    //
    Ret = SymCleanup(GetCurrentProcess());

    if (!Ret)
    {
        ShowMessages("err, symbol cleanup failed (%x)\n", GetLastError());
        return 0;
    }

    //
    // It's not initialized anymore
    //
    g_IsLoadedModulesInitialized = FALSE;

    return 0;
}

/**
 * @brief Convert function name to address
 *
 * @param FunctionOrVariableName the name of the function or variable to convert
 * @param WasFound
 *
 * @return UINT64
 */
UINT64
SymConvertNameToAddress(const char * FunctionOrVariableName, PBOOLEAN WasFound)
{
    BOOLEAN      Found   = FALSE;
    UINT64       Address = NULL;
    UINT64       Buffer[(sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(CHAR) + sizeof(UINT64) - 1) / sizeof(UINT64)];
    PSYMBOL_INFO Symbol = (PSYMBOL_INFO)Buffer;
    string       FinalModuleName;
    string       TempName(FunctionOrVariableName);
    string       ExtractedModuleName;
    string       FunctionName;

    //
    // Not found by default
    //
    *WasFound = FALSE;

    //
    // Retrieve the address from name
    //
    Symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
    Symbol->MaxNameLen   = MAX_SYM_NAME;

    //
    // *** Check if the module has an alternative name, then replace the
    // original name with alternative name ***
    //

    //
    // Check if '!' is present in the function or variable name
    //
    SIZE_T FoundIndex = TempName.find('!');
    if (FoundIndex != std::string::npos)
    {
        ExtractedModuleName = TempName.substr(0, FoundIndex);
        FunctionName        = TempName.substr(FoundIndex + 1);

        //
        // Convert module name to lower-case
        //
        std::transform(ExtractedModuleName.begin(), ExtractedModuleName.end(), ExtractedModuleName.begin(), [](unsigned char c) {
            return std::tolower(c);
        });

        //
        // Check if the we find it with an alternative module name or not
        //
        for (auto item : g_LoadedModules)
        {
            //
            // Check for the module name
            //
            if (strcmp((const char *)item->ModuleName, ExtractedModuleName.c_str()) == 0)
            {
                string ModuleName(item->ModuleName);
                FinalModuleName = ModuleName + "!" + FunctionName;
                break;
            }

            //
            // Check for the alternative module name
            //
            if (strcmp((const char *)item->ModuleAlternativeName, ExtractedModuleName.c_str()) == 0)
            {
                //
                // Replace the alternative module name with original module name
                //
                string ModuleName(item->ModuleName);
                FinalModuleName = ModuleName + "!" + FunctionName;
                break;
            }
        }
    }
    else
    {
        //
        // It doesn't contain a module name, so we'll use 'nt' by default
        //
        for (auto item : g_LoadedModules)
        {
            //
            // Check for the module name
            //
            if (strcmp((const char *)item->ModuleAlternativeName, "nt") == 0)
            {
                //
                // Replace the alternative module name with original module name
                //
                string ModuleName(item->ModuleName);
                FinalModuleName = ModuleName + "!" + TempName;
                break;
            }
        }
    }

    //
    // Check if the final module name is not empty
    //
    if (FinalModuleName.empty())
    {
        *WasFound = FALSE;
        return NULL;
    }

    if (SymFromName(GetCurrentProcess(), FinalModuleName.c_str(), Symbol))
    {
        //
        // SymFromName returned success
        //
        Found   = TRUE;
        Address = Symbol->Address;
    }
    else
    {
        //
        // SymFromName failed
        //
        Found = FALSE;

        //
        // ShowMessages("symbol not found (%x)\n", GetLastError());
        //
    }

    *WasFound = Found;
    return Address;
}

/**
 * @brief Search and show symbols
 * @details mainly used by the 'x' command
 *
 * @param TypeName
 * @param FieldName
 * @param FieldOffset
 *
 * @return BOOLEAN Whether the module is found successfully or not
 */
BOOLEAN
SymGetFieldOffset(CHAR * TypeName, CHAR * FieldName, UINT32 * FieldOffset)
{
    BOOL                          Ret        = FALSE;
    UINT32                        Index      = 0;
    PSYMBOL_LOADED_MODULE_DETAILS SymbolInfo = NULL;
    BOOLEAN                       Result     = FALSE;

    //
    // Find module info
    //
    SymbolInfo = SymGetModuleBaseFromSearchMask(TypeName, TRUE);

    //
    // Check if module is found
    //
    if (SymbolInfo == NULL)
    {
        //
        // Module not found or there was an error
        //
        return FALSE;
    }

    //
    // Remove the *!Name from TypeName as it not supports module name
    // at the beginning of a type name
    //
    while (TypeName[Index] != '\0')
    {
        if (TypeName[Index] == '!')
        {
            TypeName = (CHAR *)(TypeName + Index + 1);
            break;
        }

        Index++;
    }

    //
    // Convert TypeName to wide-char, it's because SymGetTypeInfo supports
    // wide-char
    //
    const SIZE_T TypeNameSize = strlen(TypeName) + 1;
    WCHAR *      TypeNameW    = (WCHAR *)malloc(sizeof(wchar_t) * TypeNameSize);

    if (TypeNameW == NULL)
    {
        printf("err, could not allocate buffer");
        return FALSE;
    }

    RtlZeroMemory(TypeNameW, sizeof(wchar_t) * TypeNameSize);
    mbstowcs(TypeNameW, TypeName, TypeNameSize);

    //
    // Convert FieldName to wide-char, it's because SymGetTypeInfo supports
    // wide-char
    //
    const SIZE_T FieldNameSize = strlen(FieldName) + 1;
    WCHAR *      FieldNameW    = (WCHAR *)malloc(sizeof(wchar_t) * FieldNameSize);

    if (FieldNameW == NULL)
    {
        printf("err, could not allocate buffer");
        free(TypeNameW);
        return FALSE;
    }

    RtlZeroMemory(FieldNameW, sizeof(wchar_t) * FieldNameSize);
    mbstowcs(FieldNameW, FieldName, FieldNameSize);

    Result = SymGetFieldOffsetFromModule(SymbolInfo->ModuleBase, TypeNameW, FieldNameW, FieldOffset);

    free(TypeNameW);
    free(FieldNameW);

    return Result;
}

/**
 * @brief Get the size of structures from the symbols
 *
 * @param TypeName the type (structure) name to query
 * @param TypeSize pointer to receive the size of the data type
 *
 * @return BOOLEAN Whether the module is found successfully or not
 */
BOOLEAN
SymGetDataTypeSize(CHAR * TypeName, UINT64 * TypeSize)
{
    BOOL                          Ret        = FALSE;
    UINT32                        Index      = 0;
    PSYMBOL_LOADED_MODULE_DETAILS SymbolInfo = NULL;
    BOOLEAN                       Result     = FALSE;

    //
    // Find module info
    //
    SymbolInfo = SymGetModuleBaseFromSearchMask(TypeName, TRUE);

    //
    // Check if module is found
    //
    if (SymbolInfo == NULL)
    {
        //
        // Module not found or there was an error
        //
        return FALSE;
    }

    //
    // Remove the *!Name from TypeName as it not supports module name
    // at the beginning of a type name
    //
    while (TypeName[Index] != '\0')
    {
        if (TypeName[Index] == '!')
        {
            TypeName = (CHAR *)(TypeName + Index + 1);
            break;
        }

        Index++;
    }

    //
    // Convert FieldName to wide-char, it's because SymGetTypeInfo supports
    // wide-char
    //
    const SIZE_T TypeNameSize = strlen(TypeName) + 1;
    WCHAR *      TypeNameW    = (WCHAR *)malloc(sizeof(wchar_t) * TypeNameSize);

    if (TypeNameW == NULL)
    {
        printf("err, could not allocate buffer");
        return FALSE;
    }

    RtlZeroMemory(TypeNameW, sizeof(wchar_t) * TypeNameSize);
    mbstowcs(TypeNameW, TypeName, TypeNameSize);

    Result = SymGetDataTypeSizeFromModule(SymbolInfo->ModuleBase, TypeNameW, TypeSize);

    free(TypeNameW);

    return Result;
}

/**
 * @brief Gets the offset from the symbol
 *
 * @param SearchMask
 *
 * @return UINT32
 */
UINT32
SymSearchSymbolForMask(const char * SearchMask)
{
    BOOL                          Ret        = FALSE;
    PSYMBOL_LOADED_MODULE_DETAILS SymbolInfo = NULL;

    //
    // Get the module info
    //
    SymbolInfo = SymGetModuleBaseFromSearchMask(SearchMask, TRUE);

    //
    // Check to see if module info is found
    //
    if (SymbolInfo == NULL)
    {
        //
        // Module not found or there was an error
        //
        return -1;
    }

    Ret = SymEnumSymbols(
        GetCurrentProcess(),           // Process handle of the current process
        SymbolInfo->ModuleBase,        // Base address of the module
        SearchMask,                    // Mask (NULL -> all symbols)
        SymDisplayMaskSymbolsCallback, // The callback function
        NULL                           // A used-defined context can be passed here, if necessary
    );

    if (!Ret)
    {
        ShowMessages("err, symbol enum failed (%x)\n",
                     GetLastError());
    }

    return 0;
}

/**
 * @brief Create symbol table for disassembler
 * @details mainly used by disassembler for 'u' command
 *
 * @param CallbackFunction
 *
 * @return BOOLEAN
 */
BOOLEAN
SymCreateSymbolTableForDisassembler(void * CallbackFunction)
{
    BOOL    Ret    = FALSE;
    BOOLEAN Result = TRUE;

    //
    // Set the callback function to deliver the name of module!ObjectName
    //
    g_SymbolMapForDisassembler = (SymbolMapCallback)CallbackFunction;

    //
    // Create a symbol table from all modules
    //
    for (auto item : g_LoadedModules)
    {
        //
        // Set module name
        //
        g_CurrentModuleName = (char *)item->ModuleName;

        //
        // Call the callback for the current module
        //
        Ret = SymEnumSymbols(
            GetCurrentProcess(),                     // Process handle of the current process
            item->BaseAddress,                       // Base address of the module
            NULL,                                    // Mask (NULL -> all symbols)
            SymDeliverDisassemblerSymbolMapCallback, // The callback function
            NULL                                     // A used-defined context can be passed here, if necessary
        );

        if (!Ret)
        {
            //
            // A module did not added correctly
            //
            //  ShowMessages("err, symbol enum failed (%x)\n", GetLastError());
            Result = FALSE;
        }
    }

    return Result;
}

/**
 * @brief add ` between 64 bit values and convert them to string
 *
 * @param Value
 * @return string
 */
string
SymSeparateTo64BitValue(UINT64 Value)
{
    ostringstream OstringStream;
    string        Temp;

    OstringStream << setw(16) << setfill('0') << hex << Value;
    Temp = OstringStream.str();

    Temp.insert(8, 1, '`');
    return Temp;
}

/**
 * @brief Get symbol file parameters
 *
 * @param FileName
 * @param BaseAddr
 * @param FileSize
 *
 * @return BOOL
 */
BOOL
SymGetFileParams(const char * FileName, DWORD & FileSize)
{
    //
    // Check parameters
    //
    if (FileName == 0)
    {
        return FALSE;
    }

    //
    // Determine the extension of the file
    //
    char FileExt[_MAX_EXT] = {0};

    _splitpath(FileName, NULL, NULL, NULL, FileExt);

    //
    // Is it .PDB file?
    //
    if (strcmp(FileExt, (".pdb")) == 0 || strcmp(FileExt, (".PDB")) == 0)
    {
        //
        // Yes, it is a .PDB file
        // Determine its size, and use a dummy base address
        //

        if (!SymGetFileSize(FileName, FileSize))
        {
            return FALSE;
        }
    }
    else
    {
        //
        // It is not a .PDB file
        // Base address and file size can be 0
        //
        FileSize = 0;
        return FALSE;
    }

    return TRUE;
}

/**
 * @brief Get symbol file size
 *
 * @param FileName
 * @param FileSize
 *
 * @return BOOL
 */
BOOL
SymGetFileSize(const char * FileName, DWORD & FileSize)
{
    //
    // Check parameters
    //
    if (FileName == 0)
    {
        return FALSE;
    }

    //
    // Open the file
    //
    HANDLE HFile = CreateFileA(FileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);

    if (HFile == INVALID_HANDLE_VALUE)
    {
        ShowMessages("err, unable to open symbol file (%x)\n", GetLastError());
        return FALSE;
    }

    //
    // Obtain the size of the file
    //
    FileSize = GetFileSize(HFile, NULL);

    if (FileSize == INVALID_FILE_SIZE)
    {
        ShowMessages("err, unable to get symbol file size (%x)\n", GetLastError());

        //
        // and continue ...
        //
    }

    //
    // Close the file
    //
    if (!CloseHandle(HFile))
    {
        ShowMessages("err, unable to close symbol file (%x)\n", GetLastError());

        //
        // and continue ...
        //
    }

    return (FileSize != INVALID_FILE_SIZE);
}

/**
 * @brief Show symbol info
 *
 * @param ModuleBase
 *
 * @return VOID
 */
VOID
SymShowSymbolInfo(UINT64 ModuleBase)
{
    //
    // Get module information
    //
    IMAGEHLP_MODULE64 ModuleInfo;

    memset(&ModuleInfo, 0, sizeof(ModuleInfo));

    ModuleInfo.SizeOfStruct = sizeof(ModuleInfo);

    BOOL Ret = SymGetModuleInfo64(GetCurrentProcess(), ModuleBase, &ModuleInfo);

    if (!Ret)
    {
        ShowMessages("err, unable to get symbol file information (%x)\n",
                     GetLastError());
        return;
    }

    //
    // Display information about symbols
    // Kind of symbols
    //
    switch (ModuleInfo.SymType)
    {
    case SymNone:
        ShowMessages("no symbols available for the module\n");
        break;

    case SymExport:
        ShowMessages("loaded symbols: Exports\n");
        break;

    case SymCoff:
        ShowMessages("loaded symbols: COFF\n");
        break;

    case SymCv:
        ShowMessages("loaded symbols: CodeView\n");
        break;

    case SymSym:
        ShowMessages("loaded symbols: SYM\n");
        break;

    case SymVirtual:
        ShowMessages("loaded symbols: Virtual\n");
        break;

    case SymPdb:
        ShowMessages("loaded symbols: PDB\n");
        break;

    case SymDia:
        ShowMessages("loaded symbols: DIA\n");
        break;

    case SymDeferred:

        //
        // not actually loaded
        //
        ShowMessages("loaded symbols: Deferred\n");
        break;

    default:
        ShowMessages("loaded symbols: Unknown format\n");
        break;
    }

    //
    // Image name
    //
    if (ModuleInfo.ImageName[0] != '\0')
    {
        ShowMessages("image name: %s\n", ModuleInfo.ImageName);
    }

    //
    // Loaded image name
    //
    if (ModuleInfo.LoadedImageName[0] != '\0')
    {
        ShowMessages("loaded image name: %s\n", ModuleInfo.LoadedImageName);
    }

    //
    // Loaded PDB name
    //
    if (ModuleInfo.LoadedPdbName[0] != '\0')
    {
        ShowMessages("PDB file name: %s\n", ModuleInfo.LoadedPdbName);
    }

    //
    // Is debug information unmatched?
    // (It can only happen if the debug information is contained
    // in a separate file (.DBG or .PDB)
    //
    if (ModuleInfo.PdbUnmatched || ModuleInfo.DbgUnmatched)
    {
        ShowMessages("warning, unmatched symbols\n");
    }

    //
    // *** Contents ***
    //

    //
    // Line numbers available?
    //
    ShowMessages("line numbers: %s\n",
                 ModuleInfo.LineNumbers ? "available" : "not available");

    //
    // Global symbols available?
    //
    ShowMessages("global symbols: %s\n",
                 ModuleInfo.GlobalSymbols ? "available" : "not available");

    //
    // Type information available?
    //
    ShowMessages("type information: %s\n",
                 ModuleInfo.TypeInfo ? ("Available") : ("Not available"));

    //
    // Source indexing available?
    //
    ShowMessages("source indexing: %s\n",
                 ModuleInfo.SourceIndexed ? "yes" : "no");

    //
    // Public symbols available?
    //
    ShowMessages("public symbols: %s\n",
                 ModuleInfo.Publics ? "available" : "not available");
}

/**
 * @brief Callback for showing and enumerating symbols
 *
 * @param SymInfo
 * @param SymbolSize
 * @param UserContext
 *
 * @return BOOL
 */
BOOL CALLBACK
SymDisplayMaskSymbolsCallback(SYMBOL_INFO * SymInfo, ULONG SymbolSize, PVOID UserContext)
{
    if (SymInfo != 0)
    {
        SymShowSymbolDetails(*SymInfo);
    }

    //
    // Continue enumeration
    //
    return TRUE;
}

/**
 * @brief Callback for delivering module!ObjectName to disassembler symbol map
 *
 * @param SymInfo
 * @param SymbolSize
 * @param UserContext
 *
 * @return BOOL
 */
BOOL CALLBACK
SymDeliverDisassemblerSymbolMapCallback(SYMBOL_INFO * SymInfo, ULONG SymbolSize, PVOID UserContext)
{
    if (SymInfo != 0 && g_SymbolMapForDisassembler != NULL)
    {
        //
        // Call the remote callback
        //
        g_SymbolMapForDisassembler(SymInfo->Address, g_CurrentModuleName, SymInfo->Name, SymInfo->Size);
    }

    //
    // Continue enumeration
    //
    return TRUE;
}

/**
 * @brief Show symbols details
 *
 * @param SymInfo
 *
 * @return VOID
 */
VOID
SymShowSymbolDetails(SYMBOL_INFO & SymInfo)
{
    if (g_CurrentModuleName == NULL)
    {
        //
        // Name Address
        //
        ShowMessages("%s ", SymSeparateTo64BitValue(SymInfo.Address).c_str());
    }
    else
    {
        //
        // Module!Name Address
        //
        ShowMessages("%s  %s!", SymSeparateTo64BitValue(SymInfo.Address).c_str(), g_CurrentModuleName);
    }

    //
    // Name
    //
    ShowMessages("%s\n", SymInfo.Name);

#ifndef DoNotShowDetailedResult

    //
    // Size
    //
    ShowMessages(" size: %u", SymInfo.Size);

    //
    // Kind of symbol (tag)
    //
    ShowMessages(" symbol: %s  ", SymTagStr(SymInfo.Tag));

#endif // !DoNotShowDetailedResult
}

/**
 * @brief Interpret different tags for pdbs
 *
 * @param Tag
 *
 * @return const char *
 */
const char *
SymTagStr(ULONG Tag)
{
    switch (Tag)
    {
    case SymTagNull:
        return ("Null");

    case SymTagExe:
        return ("Exe");

    case SymTagCompiland:
        return ("Compiland");

    case SymTagCompilandDetails:
        return ("CompilandDetails");

    case SymTagCompilandEnv:
        return ("CompilandEnv");

    case SymTagFunction:
        return ("Function");

    case SymTagBlock:
        return ("Block");

    case SymTagData:
        return ("Data");

    case SymTagAnnotation:
        return ("Annotation");

    case SymTagLabel:
        return ("Label");

    case SymTagPublicSymbol:
        return ("PublicSymbol");

    case SymTagUDT:
        return ("UDT");

    case SymTagEnum:
        return ("Enum");

    case SymTagFunctionType:
        return ("FunctionType");

    case SymTagPointerType:
        return ("PointerType");

    case SymTagArrayType:
        return ("ArrayType");

    case SymTagBaseType:
        return ("BaseType");

    case SymTagTypedef:
        return ("Typedef");

    case SymTagBaseClass:
        return ("BaseClass");

    case SymTagFriend:
        return ("Friend");

    case SymTagFunctionArgType:
        return ("FunctionArgType");

    case SymTagFuncDebugStart:
        return ("FuncDebugStart");

    case SymTagFuncDebugEnd:
        return ("FuncDebugEnd");

    case SymTagUsingNamespace:
        return ("UsingNamespace");

    case SymTagVTableShape:
        return ("VTableShape");

    case SymTagVTable:
        return ("VTable");

    case SymTagCustom:
        return ("Custom");

    case SymTagThunk:
        return ("Thunk");

    case SymTagCustomType:
        return ("CustomType");

    case SymTagManagedType:
        return ("ManagedType");

    case SymTagDimension:
        return ("Dimension");

    default:
        return ("Unknown");
    }

    return ("");
}

/**
 * @brief Convert a DLL to a Microsoft Symbol path
 *
 * @param LocalFilePath
 * @param ResultPath
 * @param ResultPathSize the size of the result path buffer
 *
 * @return BOOLEAN
 */
BOOLEAN
SymConvertFileToPdbPath(const char * LocalFilePath, char * ResultPath, SIZE_T ResultPathSize)
{
    std::vector<BYTE> FileBytes;

    if (LocalFilePath == NULL && ResultPath == NULL)
    {
        return FALSE;
    }

    SymReadFileBytes(LocalFilePath, FileBytes);

    return SymFormatPdbIdentityFromPeImageOrFallback(FileBytes.empty() ? NULL : FileBytes.data(),
                                                     FileBytes.size(),
                                                     ResultPath,
                                                     ResultPathSize,
                                                     NULL,
                                                     0,
                                                     NULL,
                                                     0,
                                                     SymSrvGetFileIndexInfoFallback,
                                                     (PVOID)LocalFilePath);
}

/**
 * @brief Convert redirection of 32-bit compatibility path
 *
 * @param LocalFilePath
 * @param Wow64ConvertedPath the converted path for Wow64 compatibility
 *
 * @return VOID
 */
VOID
SymConvertWow64CompatibilityPaths(const char * LocalFilePath, std::string & Wow64ConvertedPath)
{
    std::string FilePath(LocalFilePath);

    // Convert the path to lowercase
    std::transform(FilePath.begin(), FilePath.end(), FilePath.begin(), ::tolower);

    // Replace "\windows\system32" with "\windows\syswow64"
    SIZE_T Pos = FilePath.find(":\\windows\\system32");
    if (Pos != std::string::npos)
    {
        FilePath.replace(Pos, 18, ":\\windows\\syswow64");
    }

    // Replace "\program files" with "\program files (x86)"
    Pos = FilePath.find(":\\program files");
    if (Pos != std::string::npos)
    {
        FilePath.replace(Pos, 15, ":\\program files (x86)");
    }

    //
    // Copy path to destination
    //
    Wow64ConvertedPath = FilePath;
}

/**
 * @brief Convert a DLL to a Microsoft Symbol details
 * like pdb file path and GUID
 *
 * @param LocalFilePath
 * @param PdbFilePath
 * @param GuidAndAgeDetails
 * @param Is32BitModule
 *
 * @return BOOLEAN
 */
BOOLEAN
SymConvertFileToPdbFileAndGuidAndAgeDetails(const char * LocalFilePath, char * PdbFilePath, char * GuidAndAgeDetails, BOOLEAN Is32BitModule)
{
    std::string       Wow64ConvertedPath;
    std::vector<BYTE> FileBytes;
    const char *      ActualLocalFilePath = NULL;

    if (Is32BitModule)
    {
        SymConvertWow64CompatibilityPaths(LocalFilePath, Wow64ConvertedPath);
        ActualLocalFilePath = Wow64ConvertedPath.c_str();
        // ShowMessages("local file path: %s | final file path: %s\n", LocalFilePath, ActualLocalFilePath);
    }
    else
    {
        ActualLocalFilePath = LocalFilePath;
    }

    // ShowMessages("the final (actual) address is: %s\n", ActualLocalFilePath);

    SymReadFileBytes(ActualLocalFilePath, FileBytes);

    return SymFormatPdbIdentityFromPeImageOrFallback(FileBytes.empty() ? NULL : FileBytes.data(),
                                                     FileBytes.size(),
                                                     NULL,
                                                     0,
                                                     PdbFilePath,
                                                     MAX_PATH,
                                                     GuidAndAgeDetails,
                                                     MAXIMUM_GUID_AND_AGE_SIZE,
                                                     SymSrvGetFileIndexInfoFallback,
                                                     (PVOID)ActualLocalFilePath);
}

BOOLEAN
SymConvertLoadedModuleToPdbFileAndGuidAndAgeDetails(const BYTE * LoadedImageBytes,
                                                    SIZE_T       LoadedImageSize,
                                                    const char * LocalFilePath,
                                                    char *       PdbFilePath,
                                                    char *       GuidAndAgeDetails,
                                                    BOOLEAN      Is32BitModule)
{
    std::string  Wow64ConvertedPath;
    const char * ActualLocalFilePath = NULL;

    if (Is32BitModule)
    {
        SymConvertWow64CompatibilityPaths(LocalFilePath, Wow64ConvertedPath);
        ActualLocalFilePath = Wow64ConvertedPath.c_str();
        // ShowMessages("local file path: %s | final file path: %s\n", LocalFilePath, ActualLocalFilePath);
    }
    else
    {
        ActualLocalFilePath = LocalFilePath;
    }

    // ShowMessages("the final (actual) address is: %s\n", ActualLocalFilePath);

    return SymFormatPdbIdentityFromLoadedPeImageOrFallback(LoadedImageBytes,
                                                           LoadedImageSize,
                                                           NULL,
                                                           0,
                                                           PdbFilePath,
                                                           MAX_PATH,
                                                           GuidAndAgeDetails,
                                                           MAXIMUM_GUID_AND_AGE_SIZE,
                                                           SymSrvGetFileIndexInfoFallback,
                                                           (PVOID)ActualLocalFilePath);
}

/**
 * @brief check if the pdb files of loaded symbols are available or not
 *
 * @param BufferToStoreDetails Pointer to a buffer to store the symbols details
 * this buffer will be allocated by this function and needs to be freed by caller
 * @param StoredLength The length that stored on the BufferToStoreDetails
 * @param DownloadIfAvailable Download the file if its available online
 * @param SymbolPath The path of symbols
 * @param IsSilentLoad
 *
 * @return BOOLEAN
 */
BOOLEAN
SymbolInitLoad(PVOID        BufferToStoreDetails,
               UINT32       StoredLength,
               BOOLEAN      DownloadIfAvailable,
               const char * SymbolPath,
               BOOLEAN      IsSilentLoad)
{
    string                Tmp, SymDir, CustomModuleNameStr;
    const char *          CustomModuleName = NULL;
    string                SymPath(SymbolPath);
    PMODULE_SYMBOL_DETAIL BufferToStoreDetailsConverted = (PMODULE_SYMBOL_DETAIL)BufferToStoreDetails;

    vector<string> SplitedSymPath = Split(SymPath, '*');
    if (SplitedSymPath.size() < 2)
        return FALSE;
    if (SplitedSymPath[1].find(":\\") == string::npos)
        return FALSE;

    Tmp = SymDir = SplitedSymPath[1];

    //
    // Split each module and details
    //
    for (SIZE_T i = 0; i < StoredLength / sizeof(MODULE_SYMBOL_DETAIL); i++)
    {
        //
        // Check for abort
        //
        if (g_AbortLoadingExecution)
        {
            g_AbortLoadingExecution = FALSE;
            return FALSE;
        }

        //
        // Check if symbol pdb detail is available in the module
        //
        if (!BufferToStoreDetailsConverted[i].IsSymbolDetailsFound)
        {
            //
            // Ignore the module
            //
            continue;
        }

        //
        // Check if it's a local path (a path) or a microsoft symbol
        //
        if (BufferToStoreDetailsConverted[i].IsLocalSymbolPath)
        {
            //
            // If this is a local driver, then load the pdb
            //
            if (IsFileExists(BufferToStoreDetailsConverted[i].ModuleSymbolPath))
            {
                BufferToStoreDetailsConverted[i].IsSymbolPDBAvaliable = TRUE;

                //
                // Load symbol locally
                //
                if (!IsSilentLoad)
                {
                    ShowMessages("loading symbol '%s'...", Tmp.c_str());
                }

                //
                // Check if we need an alternative module name (in 32-bit modules)
                //
                CustomModuleName = NULL;

                // ShowMessages("name: %s , is 32-bit? %s\n", BufferToStoreDetailsConverted[i].FilePath, BufferToStoreDetailsConverted[i].Is32Bit ? "true" : "false");

                //
                // Check for alternative module names
                //
                if (BufferToStoreDetailsConverted[i].Is32Bit &&
                    SymCheckAndRemoveWow64Prefix(BufferToStoreDetailsConverted[i].FilePath,
                                                 BufferToStoreDetailsConverted[i].ModuleSymbolPath,
                                                 CustomModuleNameStr))
                {
                    //
                    // The name of the module contains a prefix which should be removed
                    //
                    CustomModuleName = CustomModuleNameStr.c_str();
                }
                else if (!BufferToStoreDetailsConverted[i].Is32Bit &&
                         SymCheckNtoskrnlPrefix(BufferToStoreDetailsConverted[i].ModuleSymbolPath, CustomModuleNameStr))
                {
                    //
                    // This is an nt module
                    //
                    CustomModuleName = CustomModuleNameStr.c_str();
                }

                if (SymLoadFileSymbol(BufferToStoreDetailsConverted[i].BaseAddress,
                                      BufferToStoreDetailsConverted[i].ModuleSymbolPath,
                                      CustomModuleName) == 0)
                {
                    if (!IsSilentLoad)
                    {
                        ShowMessages("\tloaded\n");
                    }
                }
                else
                {
                    if (!IsSilentLoad)
                    {
                        ShowMessages("\tnot loaded (already loaded?)\n");
                    }
                }
            }
        }
        else
        {
            //
            // It might be a Windows symbol
            //
            Tmp = SymDir +
                  "\\" +
                  BufferToStoreDetailsConverted[i].ModuleSymbolPath +
                  "\\" +
                  BufferToStoreDetailsConverted[i].ModuleSymbolGuidAndAge +
                  "\\" +
                  BufferToStoreDetailsConverted[i].ModuleSymbolPath;

            //
            // Download the symbols file if not available
            //
            if (DownloadIfAvailable && IsFileExists(Tmp) == FALSE)
            {
                //
                // Download the symbol
                //
                SymbolPdbDownload(BufferToStoreDetailsConverted[i].ModuleSymbolPath,
                                  BufferToStoreDetailsConverted[i].ModuleSymbolGuidAndAge,
                                  SymPath,
                                  IsSilentLoad);
            }

            //
            // Check again to see if the symbol already download or not
            //
            if (IsFileExists(Tmp))
            {
                BufferToStoreDetailsConverted[i].IsSymbolPDBAvaliable = TRUE;

                if (!IsSilentLoad)
                {
                    ShowMessages("loading symbol '%s'...", Tmp.c_str());
                }

                //
                // Check if we need an alternative module name (in 32-bit modules)
                //
                CustomModuleName = NULL;

                // ShowMessages("name: %s , is 32-bit? %s\n", BufferToStoreDetailsConverted[i].FilePath, BufferToStoreDetailsConverted[i].Is32Bit ? "true" : "false");

                //
                // Check for alternative module names
                //
                if (BufferToStoreDetailsConverted[i].Is32Bit &&
                    SymCheckAndRemoveWow64Prefix(BufferToStoreDetailsConverted[i].FilePath,
                                                 Tmp.c_str(),
                                                 CustomModuleNameStr))
                {
                    //
                    // The name of the module contains a prefix which should be removed
                    //
                    CustomModuleName = CustomModuleNameStr.c_str();
                }
                else if (!BufferToStoreDetailsConverted[i].Is32Bit &&
                         SymCheckNtoskrnlPrefix(Tmp.c_str(), CustomModuleNameStr))
                {
                    //
                    // This is an nt module
                    //
                    CustomModuleName = CustomModuleNameStr.c_str();
                }

                if (SymLoadFileSymbol(BufferToStoreDetailsConverted[i].BaseAddress, Tmp.c_str(), CustomModuleName) == 0)
                {
                    if (!IsSilentLoad)
                    {
                        ShowMessages("\tloaded\n");
                    }
                }
                else
                {
                    if (!IsSilentLoad)
                    {
                        ShowMessages("\tnot loaded (already loaded?)\n");
                    }
                }
            }
        }
    }

    return TRUE;
}

/**
 * @brief download pdb file
 *
 * @param SymName the name of the symbol (pdb file name)
 * @param GUID the GUID and age string identifying the symbol version
 * @param SymPath the symbol search path
 * @param IsSilentLoad download without any message
 *
 * @return BOOLEAN
 */
BOOLEAN
SymbolPdbDownload(std::string SymName, const std::string & GUID, const std::string & SymPath, BOOLEAN IsSilentLoad)
{
    vector<string> SplitedSymPath = Split(SymPath, '*');
    if (SplitedSymPath.size() < 2)
        return FALSE;
    if (SplitedSymPath[1].find(":\\") == string::npos)
        return FALSE;
    if (SplitedSymPath[2].find("http:") == string::npos && SplitedSymPath[2].find("https:") == string::npos)
        return FALSE;

    string SymDir            = SplitedSymPath[1];
    string SymDownloadServer = SplitedSymPath[2];
    string DownloadURL       = SymDownloadServer + "/" + SymName + "/" + GUID + "/" + SymName;
    string SymFullDir        = SymDir + "\\" + SymName + "\\" + GUID + "\\";
    if (!CreateDirectoryRecursive(SymFullDir))
    {
        if (!IsSilentLoad)
        {
            ShowMessages("err, unable to create sympath directory '%s'\n", SymFullDir.c_str());
        }
        return FALSE;
    }

    if (!IsSilentLoad)
    {
        ShowMessages("downloading symbol '%s'...", SymName.c_str());
    }

    HRESULT Result = URLDownloadToFileA(NULL, DownloadURL.c_str(), (SymFullDir + "\\" + SymName).c_str(), 0, NULL);

    if (Result == S_OK)
    {
        if (!IsSilentLoad)
        {
            ShowMessages("\tdownloaded\n");
        }
        return TRUE;
    }
    else
    {
        if (!IsSilentLoad)
        {
            ShowMessages("\tcould not be downloaded (%x) \n", Result);
        }
    }

    return FALSE;
}

/**
 * @brief In the case of pressing CTRL+C, it sets a flag
 * to abort the execution of the 'reload'ing and the 'download'ing
 *
 * @return VOID
 */
VOID
SymbolAbortLoading()
{
    if (!g_AbortLoadingExecution)
    {
        g_AbortLoadingExecution = TRUE;
        ShowMessages("\naborting, please wait...\n");
    }
}

/**
 * @brief Perform task for showing structures and data
 * @details used by dt command
 *
 * @param TypeName
 * @param Address
 * @param IsStruct
 * @param BufferAddress
 * @param AdditionalParameters
 *
 * @return BOOLEAN
 */
BOOLEAN
SymShowDataBasedOnSymbolTypes(const char * TypeName,
                              UINT64       Address,
                              BOOLEAN      IsStruct,
                              PVOID        BufferAddress,
                              const char * AdditionalParameters)
{
    vector<string>                SplitedSymPath;
    char **                       ArgvArray     = NULL;
    PSYMBOL_LOADED_MODULE_DETAILS SymbolInfo    = NULL;
    UINT32                        SizeOfArgv    = 0;
    UINT32                        TypeNameIndex = 0;

    //
    // Find the symbol info (to get the PDB address)
    //
    SymbolInfo = SymGetModuleBaseFromSearchMask(TypeName, FALSE);

    if (!SymbolInfo)
    {
        //
        // Symbol not found
        //
        ShowMessages("err, couldn't resolve error at '%s'\n", TypeName);

        return FALSE;
    }

    //
    // Convert char* to string
    //
    std::string AdditionalParametersString(AdditionalParameters);

    //
    // Split the arguments by space
    //
    SplitPathAndArgs(SplitedSymPath, AdditionalParametersString);

    //
    // Allocate buffer to convert it to the char*
    // + 3 is because of
    //      1. file name
    //      2. type (structure) name
    //      3. PDB file location
    //
    SizeOfArgv = (UINT32)SplitedSymPath.size() + 3;
    ArgvArray  = (char **)malloc(SizeOfArgv * sizeof(char *));

    if (ArgvArray == NULL)
    {
        return FALSE;
    }

    RtlZeroMemory(ArgvArray, SizeOfArgv * sizeof(char *));

    //
    // First argument is the file name, we let it blank
    //
    ArgvArray[0] = (char *)NULL;

    //
    // Remove the module name (if any)
    //
    while (TypeName[TypeNameIndex] != NULL)
    {
        if (TypeName[TypeNameIndex] == '!')
        {
            TypeName = &TypeName[++TypeNameIndex];
            break;
        }

        TypeNameIndex++;
    }

    //
    // Second argument is the type (structure) name
    //
    ArgvArray[1] = (char *)TypeName;

    //
    // Third argument is the PDB file location
    //
    ArgvArray[2] = SymbolInfo->PdbFilePath;

    //
    // Fill the parameter with char array
    //
    for (SIZE_T i = 3; i < SizeOfArgv; i++)
    {
        ArgvArray[i] = (char *)SplitedSymPath.at(i - 3).c_str();
    }

    //
    // Call the pdbex wrapper
    //
    if (IsStruct)
    {
        pdbex_export(SizeOfArgv, ArgvArray, true, BufferAddress);
    }
    else
    {
        pdbex_export(SizeOfArgv, ArgvArray, false, BufferAddress);
    }

    //
    // Free the buffer allocated for argv
    //
    free(ArgvArray);

    return TRUE;
}