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 #include <debug.h>
  22 DBG_DEFAULT_CHANNEL(INIFILE);
  23
  24 static ARC_STATUS IniOpenIniFile(ULONG* FileId)
  25 {
  26     CHAR FreeldrPath[MAX_PATH];
  27
  28     //
  29     // Create full freeldr.ini path
  30     //
  31     MachDiskGetBootPath(FreeldrPath, sizeof(FreeldrPath));
  32     strcat(FreeldrPath, "\\freeldr.ini");
  33
  34     // Try to open freeldr.ini
  35     return ArcOpen(FreeldrPath, OpenReadOnly, FileId);
  36 }
  37
  38 BOOLEAN IniFileInitialize(VOID)
  39 {
  40     FILEINFORMATION FileInformation;
  41     ULONG FileId; // File handle for freeldr.ini
  42     PCHAR FreeLoaderIniFileData;
  43     ULONG FreeLoaderIniFileSize, Count;
  44     ARC_STATUS Status;
  45     BOOLEAN Success;
  46     TRACE("IniFileInitialize()\n");
  47
  48     //
  49     // Open freeldr.ini
  50     //
  51     Status = IniOpenIniFile(&FileId);
  52     if (Status != ESUCCESS)
  53     {
  54         UiMessageBoxCritical("Error opening freeldr.ini or file not found.\nYou need to re-install FreeLoader.");
  55         return FALSE;
  56     }
  57
  58     //
  59     // Get the file size
  60     //
  61     Status = ArcGetFileInformation(FileId, &FileInformation);
  62     if (Status != ESUCCESS || FileInformation.EndingAddress.HighPart != 0)
  63     {
  64         UiMessageBoxCritical("Error while getting informations about freeldr.ini.\nYou need to re-install FreeLoader.");
  65         return FALSE;
  66     }
  67     FreeLoaderIniFileSize = FileInformation.EndingAddress.LowPart;
  68
  69     //
  70     // Allocate memory to cache the whole freeldr.ini
  71     //
  72     FreeLoaderIniFileData = FrLdrTempAlloc(FreeLoaderIniFileSize, TAG_INI_FILE);
  73     if (!FreeLoaderIniFileData)
  74     {
  75         UiMessageBoxCritical("Out of memory while loading freeldr.ini.");
  76         ArcClose(FileId);
  77         return FALSE;
  78     }
  79
  80     //
  81     // Read freeldr.ini off the disk
  82     //
  83     Status = ArcRead(FileId, FreeLoaderIniFileData, FreeLoaderIniFileSize, &Count);
  84     if (Status != ESUCCESS || Count != FreeLoaderIniFileSize)
  85     {
  86         UiMessageBoxCritical("Error while reading freeldr.ini.");
  87         ArcClose(FileId);
  88         FrLdrTempFree(FreeLoaderIniFileData, TAG_INI_FILE);
  89         return FALSE;
  90     }
  91
  92     //
  93     // Parse the .ini file data
  94     //
  95     Success = IniParseFile(FreeLoaderIniFileData, FreeLoaderIniFileSize);
  96
  97     //
  98     // Do some cleanup, and return
  99     //
 100     ArcClose(FileId);
 101     FrLdrTempFree(FreeLoaderIniFileData, TAG_INI_FILE);
 102
 103     return Success;
 104 }