boot/freeldr/freeldr/lib/inifile/ini_init.c

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 2009     Hervé Poussineau  <hpoussin@reactos.org>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include <freeldr.h>
  21
  22 #include <debug.h>
  23 DBG_DEFAULT_CHANNEL(INIFILE);
  24
  25 BOOLEAN IniFileInitialize(VOID)
  26 {
  27     FILEINFORMATION FileInformation;
  28     ULONG FileId; // File handle for freeldr.ini
  29     PCHAR FreeLoaderIniFileData;
  30     ULONG FreeLoaderIniFileSize, Count;
  31     ARC_STATUS Status;
  32     BOOLEAN Success;
  33
  34     TRACE("IniFileInitialize()\n");
  35
  36     /* Try to open freeldr.ini */
  37     Status = FsOpenFile("freeldr.ini", FrLdrBootPath, OpenReadOnly, &FileId);
  38     if (Status != ESUCCESS)
  39     {
  40         ERR("Error while opening freeldr.ini, Status: %d\n", Status);
  41         UiMessageBoxCritical("Error opening freeldr.ini or file not found.\nYou need to re-install FreeLoader.");
  42         return FALSE;
  43     }
  44
  45     /* Get the file size */
  46     Status = ArcGetFileInformation(FileId, &FileInformation);
  47     if (Status != ESUCCESS || FileInformation.EndingAddress.HighPart != 0)
  48     {
  49         UiMessageBoxCritical("Error while getting informations about freeldr.ini.\nYou need to re-install FreeLoader.");
  50         ArcClose(FileId);
  51         return FALSE;
  52     }
  53     FreeLoaderIniFileSize = FileInformation.EndingAddress.LowPart;
  54
  55     /* Allocate memory to cache the whole freeldr.ini */
  56     FreeLoaderIniFileData = FrLdrTempAlloc(FreeLoaderIniFileSize, TAG_INI_FILE);
  57     if (!FreeLoaderIniFileData)
  58     {
  59         UiMessageBoxCritical("Out of memory while loading freeldr.ini.");
  60         ArcClose(FileId);
  61         return FALSE;
  62     }
  63
  64     /* Load freeldr.ini from the disk */
  65     Status = ArcRead(FileId, FreeLoaderIniFileData, FreeLoaderIniFileSize, &Count);
  66     if (Status != ESUCCESS || Count != FreeLoaderIniFileSize)
  67     {
  68         ERR("Error while reading freeldr.ini, Status: %d\n", Status);
  69         UiMessageBoxCritical("Error while reading freeldr.ini.");
  70         ArcClose(FileId);
  71         FrLdrTempFree(FreeLoaderIniFileData, TAG_INI_FILE);
  72         return FALSE;
  73     }
  74
  75     /* Parse the .ini file data */
  76     Success = IniParseFile(FreeLoaderIniFileData, FreeLoaderIniFileSize);
  77
  78     /* Do some cleanup, and return */
  79     ArcClose(FileId);
  80     FrLdrTempFree(FreeLoaderIniFileData, TAG_INI_FILE);
  81
  82     return Success;
  83 }