regsvr32.c

Go to the documentation of this file.

/*
 * ReactOS regsvr32
 * Copyright (C) 2004-2006 ReactOS Team
 *
 * COPYRIGHT:       See COPYING in the top level directory
 * PROJECT:         ReactOS regsvr32.exe
 * FILE:            base/system/regsvr32/regsvr32.c
 * PURPOSE:         Register a COM component in the registry
 * PROGRAMMER:      ShadowFlare (blakflare@hotmail.com)
 */
 
// Both UNICODE and _UNICODE must be either defined or undefined
// because some headers use UNICODE and others use _UNICODE
#ifdef UNICODE
#ifndef _UNICODE
#define _UNICODE
#endif
#else
#ifdef _UNICODE
#define UNICODE
#endif
#endif
 
#define WIN32_NO_STATUS
#define _INC_WINDOWS
#define COM_NO_WINDOWS_H
#include <stdarg.h>
#include <windef.h>
#include <winbase.h>
#include <ole2.h>
#include <tchar.h>
 
typedef HRESULT (WINAPI *DLLREGISTER)(void);
typedef HRESULT (WINAPI *DLLINSTALL)(BOOL bInstall, LPWSTR lpwCmdLine);
 
#define EXITCODE_SUCCESS 0
#define EXITCODE_PARAMERROR 1
#define EXITCODE_LOADERROR 3
#define EXITCODE_NOENTRY 4
#define EXITCODE_FAILURE 5
 
LPCSTR szDllRegister = "DllRegisterServer";
LPCSTR szDllUnregister = "DllUnregisterServer";
LPCSTR szDllInstall = "DllInstall";
#ifdef UNICODE
LPCWSTR tszDllRegister = L"DllRegisterServer";
LPCWSTR tszDllUnregister = L"DllUnregisterServer";
LPCWSTR tszDllInstall = L"DllInstall";
#else
#define tszDllRegister szDllRegister
#define tszDllUnregister szDllUnregister
#define tszDllInstall szDllInstall
#endif
 
#include "resource.h"
 
LPCTSTR ModuleTitle = _T("RegSvr32");
 
TCHAR UsageMessage[RC_STRING_MAX_SIZE];
TCHAR NoDllSpecified[RC_STRING_MAX_SIZE];
TCHAR InvalidFlag[RC_STRING_MAX_SIZE];
TCHAR SwitchN_NoI[RC_STRING_MAX_SIZE];
TCHAR DllNotLoaded[RC_STRING_MAX_SIZE];
TCHAR MissingEntry[RC_STRING_MAX_SIZE];
TCHAR FailureMessage[RC_STRING_MAX_SIZE];
TCHAR SuccessMessage[RC_STRING_MAX_SIZE];
 
// The macro CommandLineToArgv maps to a function that converts
// a command-line string to argc and argv similar to the ones
// in the standard main function.  If this code is compiled for
// unicode, the build-in Windows API function is used, otherwise
// a non-unicode non-API version is used for compatibility with
// Windows versions that have no unicode support.
#ifdef UNICODE
#define CommandLineToArgv CommandLineToArgvW
#include <shellapi.h>
#else
#define CommandLineToArgv CommandLineToArgvT
 
LPTSTR *WINAPI CommandLineToArgvT(LPCTSTR lpCmdLine, int *lpArgc)
{
    HGLOBAL hargv;
    LPTSTR *argv, lpSrc, lpDest, lpArg;
    int argc, nBSlash;
    BOOL bInQuotes;
 
    // If null was passed in for lpCmdLine, there are no arguments
    if (!lpCmdLine) {
        if (lpArgc)
            *lpArgc = 0;
        return 0;
    }
 
    lpSrc = (LPTSTR)lpCmdLine;
    // Skip spaces at beginning
    while (*lpSrc == _T(' ') || *lpSrc == _T('\t'))
        lpSrc++;
 
    // If command-line starts with null, there are no arguments
    if (*lpSrc == 0) {
        if (lpArgc)
            *lpArgc = 0;
        return 0;
    }
 
    lpArg = lpSrc;
    argc = 0;
    nBSlash = 0;
    bInQuotes = FALSE;
 
    // Count the number of arguments
    while (1) {
        if (*lpSrc == 0 || ((*lpSrc == _T(' ') || *lpSrc == _T('\t')) && !bInQuotes)) {
            // Whitespace not enclosed in quotes signals the start of another argument
            argc++;
 
            // Skip whitespace between arguments
            while (*lpSrc == _T(' ') || *lpSrc == _T('\t'))
                lpSrc++;
            if (*lpSrc == 0)
                break;
            nBSlash = 0;
            continue;
        }
        else if (*lpSrc == _T('\\')) {
            // Count consecutive backslashes
            nBSlash++;
        }
        else if (*lpSrc == _T('\"') && !(nBSlash & 1)) {
            // Open or close quotes
            bInQuotes = !bInQuotes;
            nBSlash = 0;
        }
        else {
            // Some other character
            nBSlash = 0;
        }
        lpSrc++;
    }
 
    // Allocate space the same way as CommandLineToArgvW for compatibility
    hargv = GlobalAlloc(0, argc * sizeof(LPTSTR) + (_tcslen(lpArg) + 1) * sizeof(TCHAR));
    argv = (LPTSTR *)GlobalLock(hargv);
 
    if (!argv) {
        // Memory allocation failed
        if (lpArgc)
            *lpArgc = 0;
        return 0;
    }
 
    lpSrc = lpArg;
    lpDest = lpArg = (LPTSTR)(argv + argc);
    argc = 0;
    nBSlash = 0;
    bInQuotes = FALSE;
 
    // Fill the argument array
    while (1) {
        if (*lpSrc == 0 || ((*lpSrc == _T(' ') || *lpSrc == _T('\t')) && !bInQuotes)) {
            // Whitespace not enclosed in quotes signals the start of another argument
            // Null-terminate argument
            *lpDest++ = 0;
            argv[argc++] = lpArg;
 
            // Skip whitespace between arguments
            while (*lpSrc == _T(' ') || *lpSrc == _T('\t'))
                lpSrc++;
            if (*lpSrc == 0)
                break;
            lpArg = lpDest;
            nBSlash = 0;
            continue;
        }
        else if (*lpSrc == _T('\\')) {
            *lpDest++ = _T('\\');
            lpSrc++;
 
            // Count consecutive backslashes
            nBSlash++;
        }
        else if (*lpSrc == _T('\"')) {
            if (!(nBSlash & 1)) {
                // If an even number of backslashes are before the quotes,
                // the quotes don't go in the output
                lpDest -= nBSlash / 2;
                bInQuotes = !bInQuotes;
            }
            else {
                // If an odd number of backslashes are before the quotes,
                // output a quote
                lpDest -= (nBSlash + 1) / 2;
                *lpDest++ = _T('\"');
            }
            lpSrc++;
            nBSlash = 0;
        }
        else {
            // Copy other characters
            *lpDest++ = *lpSrc++;
            nBSlash = 0;
        }
    }
 
    if (lpArgc)
        *lpArgc = argc;
    return argv;
}
 
#endif
 
// The macro ConvertToWideChar takes a tstring parameter and returns
// a pointer to a unicode string.  A conversion is performed if
// necessary.  FreeConvertedWideChar string should be used on the
// return value of ConvertToWideChar when the string is no longer
// needed.  The original string or the string that is returned
// should not be modified until FreeConvertedWideChar has been called.
#ifdef UNICODE
#define ConvertToWideChar(lptString) (lptString)
#define FreeConvertedWideChar(lpwString) ((void) 0)
#else
 
LPWSTR ConvertToWideChar(LPCSTR lpString)
{
    LPWSTR lpwString;
    size_t nStrLen;
 
    nStrLen = strlen(lpString) + 1;
 
    lpwString = (LPWSTR)malloc(nStrLen * sizeof(WCHAR));
    MultiByteToWideChar(0,0,lpString,nStrLen,lpwString,nStrLen);
 
    return lpwString;
}
 
#define FreeConvertedWideChar(lpwString) free(lpwString)
#endif
 
void DisplayMessage(BOOL bConsole, BOOL bSilent, LPCTSTR lpMessage, LPCTSTR lpTitle, UINT uType)
{
    if (!bSilent)
        MessageBox(0,lpMessage,lpTitle,uType);
    if (bConsole)
        _tprintf(_T("%s: %s\n\n"),lpTitle,lpMessage);
}
 
int WINAPI _tWinMain(
  HINSTANCE hInstance,
  HINSTANCE hPrevInstance,
  LPTSTR lpCmdLine,
  int nCmdShow
)
{
    int argc;
    LPTSTR *argv;
    LPTSTR lptDllName,lptDllCmdLine,lptMsgBuffer;
    LPCTSTR lptFuncName;
    LPCSTR lpFuncName;
    LPWSTR lpwDllCmdLine;
    BOOL bUnregister,bSilent,bConsole,bInstall,bNoRegister;
    UINT nDllCount, fuOldErrorMode;
    HMODULE hDll;
    DLLREGISTER fnDllRegister;
    DLLINSTALL fnDllInstall;
    HRESULT hResult;
    DWORD dwErr;
    int nRetValue,i;
 
    // Get Langues msg
    LoadString( GetModuleHandle(NULL), IDS_UsageMessage, (LPTSTR) UsageMessage,RC_STRING_MAX_SIZE);
    LoadString( GetModuleHandle(NULL), IDS_NoDllSpecified, (LPTSTR) NoDllSpecified,RC_STRING_MAX_SIZE);
    LoadString( GetModuleHandle(NULL), IDS_InvalidFlag, (LPTSTR) InvalidFlag,RC_STRING_MAX_SIZE);
    LoadString( GetModuleHandle(NULL), IDS_SwitchN_NoI, (LPTSTR) SwitchN_NoI,RC_STRING_MAX_SIZE);
 
    LoadString( GetModuleHandle(NULL), IDS_DllNotLoaded, (LPTSTR)   DllNotLoaded,RC_STRING_MAX_SIZE);
    LoadString( GetModuleHandle(NULL), IDS_MissingEntry, (LPTSTR)   MissingEntry,RC_STRING_MAX_SIZE);
    LoadString( GetModuleHandle(NULL), IDS_FailureMessage, (LPTSTR) FailureMessage,RC_STRING_MAX_SIZE);
    LoadString( GetModuleHandle(NULL), IDS_SuccessMessage, (LPTSTR) SuccessMessage,RC_STRING_MAX_SIZE);
 
    // Get command-line in argc-argv format
    argv = CommandLineToArgv(GetCommandLine(),&argc);
 
    // Initialize variables
    lptFuncName = 0;
    lptDllCmdLine = 0;
    nDllCount = 0;
    bUnregister = FALSE;
    bSilent = FALSE;
    bConsole = FALSE;
    bInstall = FALSE;
    bNoRegister = FALSE;
 
    // Find all arguments starting with a slash (/)
    for (i = 1; i < argc; i++) {
        if (*argv[i] == _T('/') || *argv[i] == '-') {
            switch (argv[i][1]) {
            case _T('u'):
            case _T('U'):
                bUnregister = TRUE;
                break;
            case _T('s'):
            case _T('S'):
                bSilent = TRUE;
                break;
            case _T('c'):
            case _T('C'):
                bConsole = TRUE;
                break;
            case _T('i'):
            case _T('I'):
                bInstall = TRUE;
                lptDllCmdLine = argv[i];
                while (*lptDllCmdLine != 0 && *lptDllCmdLine != _T(':'))
                    lptDllCmdLine++;
                if (*lptDllCmdLine == _T(':'))
                    lptDllCmdLine++;
                break;
            case _T('n'):
            case _T('N'):
                bNoRegister = TRUE;
                break;
            default:
                if (!lptFuncName)
                    lptFuncName = argv[i];
            }
        }
        else {
            nDllCount++;
        }
    }
 
    // An unrecognized flag was used, display a message and show available options
 
    if (lptFuncName) {
        lptMsgBuffer = (LPTSTR)malloc((_tcslen(UsageMessage) - 2 + _tcslen(InvalidFlag) - 2 + _tcslen(lptFuncName) + 1) * sizeof(TCHAR));
        _stprintf(lptMsgBuffer + (_tcslen(UsageMessage) - 2),InvalidFlag,lptFuncName);
        _stprintf(lptMsgBuffer,UsageMessage,lptMsgBuffer + (_tcslen(UsageMessage) - 2));
        DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONEXCLAMATION);
        free(lptMsgBuffer);
        GlobalFree(argv);
        return EXITCODE_PARAMERROR;
    }
 
    // /n was used without /i, display a message and show available options
    if (bNoRegister && (!bInstall)) {
        lptMsgBuffer = (LPTSTR)malloc((_tcslen(UsageMessage) - 2 + _tcslen(SwitchN_NoI) + 1) * sizeof(TCHAR));
        _stprintf(lptMsgBuffer,UsageMessage,SwitchN_NoI);
        DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONEXCLAMATION);
        free(lptMsgBuffer);
        GlobalFree(argv);
        return EXITCODE_PARAMERROR;
    }
 
    // No dll was specified, display a message and show available options
    if (nDllCount == 0) {
        lptMsgBuffer = (LPTSTR)malloc((_tcslen(UsageMessage) - 2 + _tcslen(NoDllSpecified) + 1) * sizeof(TCHAR));
        _stprintf(lptMsgBuffer,UsageMessage,NoDllSpecified);
        DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONEXCLAMATION);
        free(lptMsgBuffer);
        GlobalFree(argv);
        return EXITCODE_PARAMERROR;
    }
 
    nRetValue = EXITCODE_SUCCESS;
    if (!bUnregister) {
        lpFuncName = szDllRegister;
        lptFuncName = tszDllRegister;
    }
    else {
        lpFuncName = szDllUnregister;
        lptFuncName = tszDllUnregister;
    }
 
    if (lptDllCmdLine)
        lpwDllCmdLine = ConvertToWideChar(lptDllCmdLine);
    else
        lpwDllCmdLine = 0;
 
    // Initialize OLE32 before attempting to register the
    // dll.  Some dll's require this to register properly
    OleInitialize(0);
 
    // (Un)register every dll whose filename was passed in the command-line string
    for (i = 1; i < argc && nRetValue == EXITCODE_SUCCESS; i++) {
        // Arguments that do not start with a slash (/) are filenames
        if (*argv[i] != _T('/')) {
            lptDllName = argv[i];
 
            fuOldErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
            // Everything is all setup, so load the dll now
            hDll = LoadLibraryEx(lptDllName,0,LOAD_WITH_ALTERED_SEARCH_PATH);
            if (hDll) {
                SetErrorMode(fuOldErrorMode);
                if (!bNoRegister) {
                    // Get the address of DllRegisterServer or DllUnregisterServer
                    fnDllRegister = (DLLREGISTER)GetProcAddress(hDll,lpFuncName);
                    if (fnDllRegister) {
                        // If the function exists, call it
                        hResult = fnDllRegister();
                        if (hResult == S_OK) {
                            // (Un)register succeeded, display a message
                            lptMsgBuffer = (LPTSTR)malloc((_tcslen(SuccessMessage) - 4 + _tcslen(lptFuncName) + _tcslen(lptDllName) + 1) * sizeof(TCHAR));
                            _stprintf(lptMsgBuffer,SuccessMessage,lptFuncName,lptDllName);
                            DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONINFORMATION);
                        }
                        else {
                            // (Un)register failed, display a message
                            lptMsgBuffer = (LPTSTR)malloc((_tcslen(FailureMessage) + _tcslen(lptFuncName) + _tcslen(lptDllName) + 1) * sizeof(TCHAR));
                            _stprintf(lptMsgBuffer,FailureMessage,lptFuncName,lptDllName,hResult);
                            DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONEXCLAMATION);
                        }
                        free(lptMsgBuffer);
                        if (hResult != S_OK)
                            nRetValue = EXITCODE_FAILURE;
                    }
                    else {
                        FreeLibrary(hDll);
                        // Dll(Un)register was not found, display an error message
                        lptMsgBuffer = (LPTSTR)malloc((_tcslen(MissingEntry) - 8 + _tcslen(lptFuncName) * 2 + _tcslen(lptDllName) * 2 + 1) * sizeof(TCHAR));
                        _stprintf(lptMsgBuffer,MissingEntry,lptDllName,lptFuncName,lptFuncName,lptDllName);
                        DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONEXCLAMATION);
                        free(lptMsgBuffer);
                        nRetValue = EXITCODE_NOENTRY;
                    }
                }
 
                if (bInstall && nRetValue == EXITCODE_SUCCESS) {
                    // Get the address of DllInstall
                    fnDllInstall = (DLLINSTALL)GetProcAddress(hDll,szDllInstall);
                    if (fnDllInstall) {
                        // If the function exists, call it
                        if (!bUnregister)
                            hResult = fnDllInstall(1,lpwDllCmdLine);
                        else
                            hResult = fnDllInstall(0,lpwDllCmdLine);
                        if (hResult == S_OK) {
                            // (Un)install succeeded, display a message
                            lptMsgBuffer = (LPTSTR)malloc((_tcslen(SuccessMessage) - 4 + _tcslen(tszDllInstall) + _tcslen(lptDllName) + 1) * sizeof(TCHAR));
                            _stprintf(lptMsgBuffer,SuccessMessage,tszDllInstall,lptDllName);
                            DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONINFORMATION);
                        }
                        else {
                            // (Un)install failed, display a message
                            lptMsgBuffer = (LPTSTR)malloc((_tcslen(FailureMessage) + _tcslen(tszDllInstall) + _tcslen(lptDllName) + 1) * sizeof(TCHAR));
                            _stprintf(lptMsgBuffer,FailureMessage,tszDllInstall,lptDllName,hResult);
                            DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONEXCLAMATION);
                        }
                        free(lptMsgBuffer);
                        if (hResult != S_OK)
                            nRetValue = EXITCODE_FAILURE;
                    }
                    else {
                        // DllInstall was not found, display an error message
                        lptMsgBuffer = (LPTSTR)malloc((_tcslen(MissingEntry) - 8 + _tcslen(tszDllInstall) * 2 + _tcslen(lptDllName) * 2 + 1) * sizeof(TCHAR));
                        _stprintf(lptMsgBuffer,MissingEntry,lptDllName,tszDllInstall,tszDllInstall,lptDllName);
                        DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONEXCLAMATION);
                        free(lptMsgBuffer);
                        nRetValue = EXITCODE_NOENTRY;
                    }
                }
 
                // The dll function has finished executing, so unload it
                FreeLibrary(hDll);
            }
            else {
                // The dll could not be loaded; display an error message
                dwErr = GetLastError();
                SetErrorMode(fuOldErrorMode);
                lptMsgBuffer = (LPTSTR)malloc((_tcslen(DllNotLoaded) + 2 + _tcslen(lptDllName) + 1) * sizeof(TCHAR));
                _stprintf(lptMsgBuffer,DllNotLoaded,lptDllName,dwErr);
                DisplayMessage(bConsole,bSilent,lptMsgBuffer,ModuleTitle,MB_ICONEXCLAMATION);
                free(lptMsgBuffer);
                nRetValue = EXITCODE_LOADERROR;
            }
        }
    }
 
    if (lpwDllCmdLine)
        FreeConvertedWideChar(lpwDllCmdLine);
    GlobalFree(argv);
    OleUninitialize();
    return nRetValue;
}