299 lines
9.2 KiB
C++
299 lines
9.2 KiB
C++
// Copyright (c) 1998-1999 Microsoft Corporation
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#include "stdafx.h"
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#include "MSICAB.h"
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extern "C" {
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#include "uni2utf.h"
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};
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#ifndef IDS_CAB_DIR_NAME
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#include "resource.h"
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#endif
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LPCTSTR cszDirSeparator = _T("\\");
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//---------------------------------------------------------------------------
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// DirectorySearch is used to locate all of the files in a directory or
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// one of its subdirectories which match a file spec.
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//---------------------------------------------------------------------------
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void DirectorySearch(const CString & strSpec, const CString & strDir, CStringList &results)
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{
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// Look for all of the files which match the file spec in the directory
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// specified by strDir.
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WIN32_FIND_DATA finddata;
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CString strSearch, strDirectory;
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strDirectory = strDir;
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if (strDirectory.Right(1) != CString(cszDirSeparator)) strDirectory += CString(cszDirSeparator);
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strSearch = strDirectory + strSpec;
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HANDLE hFind = FindFirstFile(strSearch, &finddata);
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if (hFind != INVALID_HANDLE_VALUE)
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{
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do
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{
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results.AddHead(strDirectory + CString(finddata.cFileName));
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} while (FindNextFile(hFind, &finddata));
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FindClose(hFind);
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}
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// Now call this function recursively, with each of the subdirectories.
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strSearch = strDirectory + CString(_T("*"));
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hFind = FindFirstFile(strSearch, &finddata);
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if (hFind != INVALID_HANDLE_VALUE)
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{
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do
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{
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if (finddata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
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if (::_tcscmp(finddata.cFileName, _T(".")) != 0 && ::_tcscmp(finddata.cFileName, _T("..")) != 0)
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DirectorySearch(strSpec, strDirectory + CString(finddata.cFileName), results);
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} while (FindNextFile(hFind, &finddata));
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FindClose(hFind);
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}
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}
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//---------------------------------------------------------------------------
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// This function gets the directory in which to put exploded CAB files.
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// This will be the same directory each time, so this function will create
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// the directory (if necessary) and delete any files in the directory.
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//---------------------------------------------------------------------------
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BOOL GetCABExplodeDir(CString &destination, BOOL fDeleteFiles, const CString & strDontDelete)
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{
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CString strMSInfoDir, strExplodeTo, strSubDirName;
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// Determine the temporary path and add on a subdir name.
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TCHAR szTempDir[_MAX_PATH];
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if (GetTempPath(_MAX_PATH, szTempDir) > _MAX_PATH)
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{
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// MSIError(IDS_GENERAL_ERROR, "couldn't get temporary path");
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destination = _T("");
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return FALSE;
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}
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strSubDirName.LoadString(IDS_CAB_DIR_NAME);
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strExplodeTo = szTempDir;
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if (strExplodeTo.Right(1) == CString(cszDirSeparator))
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strExplodeTo = strExplodeTo + strSubDirName;
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else
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strExplodeTo = strExplodeTo + CString(cszDirSeparator) + strSubDirName;
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// Kill the directory if it already exists.
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if (fDeleteFiles)
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KillDirectory(strExplodeTo, strDontDelete);
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// Create the subdirectory.
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if (!CreateDirectoryEx(szTempDir, strExplodeTo, NULL))
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{
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if (GetLastError() != ERROR_ALREADY_EXISTS)
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{
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// MSIError(IDS_GENERAL_ERROR, "couldn't create the target directory");
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destination = "";
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return FALSE;
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}
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}
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destination = strExplodeTo;
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return TRUE;
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}
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//---------------------------------------------------------------------------
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// This functions kills a directory by recursively deleting files and
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// subdirectories.
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//---------------------------------------------------------------------------
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void KillDirectory(const CString & strDir, const CString & strDontDelete)
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{
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CString strDirectory = strDir;
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if (strDirectory.Right(1) == CString(cszDirSeparator))
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strDirectory = strDirectory.Left(strDirectory.GetLength() - 1);
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// Delete any files in directory.
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CString strFilesToDelete = strDirectory + CString(_T("\\*.*"));
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CString strDeleteFile;
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WIN32_FIND_DATA filedata;
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BOOL bFound = TRUE;
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HANDLE hFindFile = FindFirstFile(strFilesToDelete, &filedata);
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while (hFindFile != INVALID_HANDLE_VALUE && bFound)
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{
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if ((filedata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) == 0L)
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{
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strDeleteFile = strDirectory + CString(cszDirSeparator) + filedata.cFileName;
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if (strDontDelete.CompareNoCase(strDeleteFile) != 0)
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{
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::SetFileAttributes(strDeleteFile, FILE_ATTRIBUTE_NORMAL);
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::DeleteFile(strDeleteFile);
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}
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}
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bFound = FindNextFile(hFindFile, &filedata);
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}
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FindClose(hFindFile);
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// Now call this function on any subdirectories in this directory.
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CString strSearch = strDirectory + CString(_T("\\*"));
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hFindFile = FindFirstFile(strSearch, &filedata);
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if (hFindFile != INVALID_HANDLE_VALUE)
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{
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do
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{
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if (filedata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
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if (::_tcscmp(filedata.cFileName, _T(".")) != 0 && ::_tcscmp(filedata.cFileName, _T("..")) != 0)
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KillDirectory(strDirectory + CString(cszDirSeparator) + CString(filedata.cFileName));
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} while (FindNextFile(hFindFile, &filedata));
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FindClose(hFindFile);
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}
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// Finally, remove this directory.
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::RemoveDirectory(strDirectory);
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}
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//---------------------------------------------------------------------------
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// This function will expand the specified CAB file, putting all of the
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// files in the specified destination directory.
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//---------------------------------------------------------------------------
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BOOL OpenCABFile(const CString & filename, const CString & destination)
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{
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char szFilebuffer[MAX_UTF_LENGTH];
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char szDestination[MAX_UTF_LENGTH];
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// If the filename has Unicode characters which can't be represented
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// directly by ANSI characters, we need to make a copy of it to the
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// temp directory, and give it an ANSI name. The code we've borrowed
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// for expanding CAB files can't open Unicode named files.
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BOOL fNonANSICharacter = FALSE;
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const TCHAR * pChar = (LPCTSTR) filename;
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while (pChar && *pChar)
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if (*pChar++ >= (TCHAR)0x0080)
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{
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fNonANSICharacter = TRUE;
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break;
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}
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CString strFilename(filename);
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BOOL fMadeCopy = FALSE;
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if (fNonANSICharacter)
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{
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TCHAR szNewFile[MAX_PATH + 10];
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DWORD dwLength = 0;
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dwLength = ::GetTempPath(MAX_PATH, szNewFile);
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if (dwLength != 0 && dwLength < MAX_PATH)
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{
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_tcscat(szNewFile, _T("msitemp.cab"));
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fMadeCopy = ::CopyFile((LPCTSTR) strFilename, szNewFile, FALSE);
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strFilename = szNewFile;
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}
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}
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char * szFilename = Unicode2UTF((LPCTSTR)strFilename);
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::strcpy(szFilebuffer, szFilename);
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szFilename = Unicode2UTF((LPCTSTR)destination);
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::strcpy(szDestination, szFilename);
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BOOL fResult = explode_cab(szFilebuffer, szDestination);
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// If we made a copy of the CAB file, we should delete it now.
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if (fMadeCopy)
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::DeleteFile((LPCTSTR)strFilename);
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return fResult;
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}
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//---------------------------------------------------------------------------
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// This function looks in the specified directory for an NFO file. If it
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// finds one, it assigns it to filename and returns TRUE. This function
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// will only find the first NFO file in a directory.
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//
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// If an NFO file cannot be found, then we'll look for another file type
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// to open. Grab the string entry in the registry = "cabdefaultopen". An
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// example value would be "*.nfo|hwinfo.dat|*.dat|*.txt" which would be
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// interpreted as follows:
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//
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// 1. First look for any NFO file to open.
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// 2. Then try to open a file called "hwinfo.dat".
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// 3. Then try to open any file with a DAT extension.
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// 4. Then try for any TXT file.
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// 5. Finally, if none of these can be found, present an open dialog
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// to the user.
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//---------------------------------------------------------------------------
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LPCTSTR VAL_CABDEFAULTOPEN = _T("cabdefaultopen");
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BOOL FindFileToOpen(const CString & destination, CString & filename)
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{
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CString strCABDefaultOpen, strRegBase, strDirectory;
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HKEY hkey;
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filename.Empty();
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strDirectory = destination;
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if (strDirectory.Right(1) != CString(cszDirSeparator))
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strDirectory += CString(cszDirSeparator);
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// Set up a fallback string of the NFO file type, in case we can't
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// find the registry entry.
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strCABDefaultOpen.LoadString(IDS_MSI_FILE_EXTENSION);
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strCABDefaultOpen = CString("*.") + strCABDefaultOpen;
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// Load the string of files and file types to open from the registry.
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strRegBase.LoadString(IDS_MSI_REG_BASE);
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if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, strRegBase, 0, KEY_READ, &hkey) == ERROR_SUCCESS)
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{
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char szData[MAX_PATH];
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DWORD dwType, dwSize = MAX_PATH;
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if (RegQueryValueEx(hkey, VAL_CABDEFAULTOPEN, NULL, &dwType, (LPBYTE) szData, &dwSize) == ERROR_SUCCESS)
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if (dwType == REG_SZ)
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strCABDefaultOpen = szData;
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RegCloseKey(hkey);
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}
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// Look through each of the potential files and file types. If we find
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// a match, return TRUE after setting filename appropriately. Note that
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// we need to recurse down through directories.
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CString strFileSpec;
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CStringList filesfound;
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POSITION pos;
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while (!strCABDefaultOpen.IsEmpty())
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{
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if (strCABDefaultOpen.Find('|') == -1)
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strFileSpec = strCABDefaultOpen;
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else
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strFileSpec = strCABDefaultOpen.Left(strCABDefaultOpen.Find('|'));
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filesfound.RemoveAll();
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DirectorySearch(strFileSpec, strDirectory, filesfound);
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pos = filesfound.GetHeadPosition();
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if (pos != NULL)
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{
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filename = filesfound.GetNext(pos);
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return TRUE;
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}
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strCABDefaultOpen = strCABDefaultOpen.Right(strCABDefaultOpen.GetLength() - strFileSpec.GetLength());
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if (strCABDefaultOpen.Find('|') == 0)
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strCABDefaultOpen = strCABDefaultOpen.Right(strCABDefaultOpen.GetLength() - 1);
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}
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return FALSE;
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}
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