base/applications/msconfig_new/fileutils.c

   1 /*
   2  * PROJECT:     ReactOS Applications
   3  * LICENSE:     LGPL - See COPYING in the top level directory
   4  * FILE:        base/applications/msconfig_new/fileutils.c
   5  * PURPOSE:     File Utility Functions
   6  * COPYRIGHT:   Copyright 2011-2012 Hermes BELUSCA - MAITO <hermes.belusca@sfr.fr>
   7  */
   8
   9 #include "precomp.h"
  10 #include "utils.h"
  11 #include "fileutils.h"
  12
  13 //
  14 // NOTE: A function called "FileExists" with the very same prototype
  15 // already exists in the PSDK headers (in setupapi.h)
  16 //
  17 BOOL
  18 MyFileExists(IN  LPCWSTR           lpszFilePath,
  19              OUT PWIN32_FIND_DATAW pFindData OPTIONAL)
  20 {
  21     BOOL             bIsFound = FALSE;
  22     WIN32_FIND_DATAW find_data;
  23
  24     DWORD  dwNumOfChars;
  25     LPWSTR lpszCmdLine;
  26     HANDLE search;
  27
  28     dwNumOfChars = ExpandEnvironmentStringsW(lpszFilePath, NULL, 0);
  29     lpszCmdLine  = (LPWSTR)MemAlloc(0, dwNumOfChars * sizeof(WCHAR));
  30     ExpandEnvironmentStringsW(lpszFilePath, lpszCmdLine, dwNumOfChars);
  31
  32     search = FindFirstFileW(lpszCmdLine, &find_data);
  33     MemFree(lpszCmdLine);
  34
  35     bIsFound = (search != INVALID_HANDLE_VALUE);
  36
  37     FindClose(search);
  38
  39     if (bIsFound && pFindData)
  40         *pFindData = find_data;
  41
  42     return bIsFound;
  43 }
  44
  45 LRESULT
  46 FileQueryFiles(IN LPCWSTR Path,
  47                IN LPCWSTR FileNamesQuery,
  48                IN PQUERY_FILES_TABLE QueryTable,
  49                IN PVOID   Context)
  50 {
  51     LRESULT          res = ERROR_SUCCESS;
  52     WIN32_FIND_DATAW find_data;
  53
  54     LPWSTR lpszQuery;
  55     DWORD  dwNumOfChars;
  56     LPWSTR lpszExpandedQuery;
  57     HANDLE search;
  58
  59     dwNumOfChars = wcslen(Path) + 1 + wcslen(FileNamesQuery) + 1;
  60     lpszQuery = (LPWSTR)MemAlloc(0, dwNumOfChars * sizeof(WCHAR));
  61     wcscpy(lpszQuery, Path);
  62     wcscat(lpszQuery, L"\\");
  63     wcscat(lpszQuery, FileNamesQuery);
  64
  65     dwNumOfChars      = ExpandEnvironmentStringsW(lpszQuery, NULL, 0);
  66     lpszExpandedQuery = (LPWSTR)MemAlloc(0, dwNumOfChars * sizeof(WCHAR));
  67     ExpandEnvironmentStringsW(lpszQuery, lpszExpandedQuery, dwNumOfChars);
  68     MemFree(lpszQuery);
  69
  70     search = FindFirstFileW(lpszExpandedQuery, &find_data);
  71     if (search != INVALID_HANDLE_VALUE)
  72     {
  73         do
  74         {
  75             PQUERY_FILES_TABLE pTable = QueryTable;
  76             while (pTable && pTable->QueryRoutine)
  77             {
  78                 pTable->QueryRoutine(Path, FileNamesQuery, lpszExpandedQuery, &find_data, Context, pTable->EntryContext);
  79                 ++pTable;
  80             }
  81         } while (/*res = */ FindNextFileW(search, &find_data));
  82     }
  83     else
  84         res = ERROR_NO_MORE_FILES;
  85
  86     FindClose(search);
  87
  88     MemFree(lpszExpandedQuery);
  89
  90     return res;
  91 }
  92
  93 BOOL BackupIniFile(IN LPCWSTR lpszIniFile)
  94 {
  95     BOOL Success = FALSE;
  96     DWORD dwNumOfChars = 0;
  97     LPWSTR SourceFile, DestFile;
  98     LPWSTR lpName, lpPath;
  99
 100     dwNumOfChars = ExpandEnvironmentStringsW(lpszIniFile, NULL, 0);
 101     SourceFile = (LPWSTR)MemAlloc(0, dwNumOfChars * sizeof(WCHAR));
 102     ExpandEnvironmentStringsW(lpszIniFile, SourceFile, dwNumOfChars);
 103
 104     lpName = wcsrchr(SourceFile, L'\\');
 105     lpName = (lpName ? lpName + 1 : SourceFile);
 106     dwNumOfChars = wcslen(L"%SystemRoot%\\pss\\") + wcslen(lpName) + 7 + 1;
 107     lpPath = (LPWSTR)MemAlloc(0, dwNumOfChars * sizeof(WCHAR));
 108     wcscpy(lpPath, L"%SystemRoot%\\pss\\");
 109     wcscat(lpPath, lpName);
 110     wcscat(lpPath, L".backup");
 111
 112     dwNumOfChars = ExpandEnvironmentStringsW(lpPath, NULL, 0);
 113     DestFile = (LPWSTR)MemAlloc(0, dwNumOfChars * sizeof(WCHAR));
 114     ExpandEnvironmentStringsW(lpPath, DestFile, dwNumOfChars);
 115     MemFree(lpPath);
 116
 117     Success = CopyFileW(SourceFile, DestFile, TRUE /* don't overwrite */ /* FALSE */ /* overwrite */);
 118
 119     MemFree(DestFile);
 120     MemFree(SourceFile);
 121
 122     return Success;
 123 }