/* * iin_gi.c * $Id: iin_gi.c,v 1.8 2004/12/04 10:20:52 b081 Exp $ * * Copyright 2004 Bobi B., w1zard0f07@yahoo.com * * This file is part of hdl_dump. * * hdl_dump is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * hdl_dump is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with hdl_dump; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */#include <string.h>#include "iin_gi.h"#include "iin_img_base.h"#include "osal.h"#include "retcodes.h"#include "common.h"/* whether to make additional check for "0x11111111" in the header */#define CHECK_11111111typedef enum data_mode_type  {    dm_mode1_plain = 0,    dm_mode2_plain = 1  } data_mode_t;/* values for Global Image found out by building test images */static const u_int32_t RAW_SECTOR_SIZE [2] = { 2048, 2336 };static const u_int32_t RAW_SKIP_OFFSET [2] = {    0,    8 }; static const u_int32_t FILE_SIZES_OFFSET [4] = { 0x9c, 0xa0, 0xa4, 0xa8 }; /* BE, in sectors */static const u_int32_t FILE_NAMES_OFFSET [4] = { 0x00b0, 0x01b4, 0x02b8, 0x03bd };/**************************************************************/intiin_gi_probe_path (const char *path,		   iin_t **iin){  u_int32_t device_sector_size;  osal_handle_t in;  int result = osal_get_volume_sect_size (path, &device_sector_size);  if (result == OSAL_OK)    result = osal_open (path, &in, 0); /* do not disable cache yet */  if (result == OSAL_OK)    {      int single_file = 0;      data_mode_t mode;      u_int32_t len;      unsigned char header [1476];      iin_img_base_t *img_base = NULL;      u_int32_t num_sectors;      result = osal_read (in, header, 1476, &len);      if (result == OSAL_OK)	result = (header [0x00] == 0xda &&		  header [0x01] == 0xda &&		  header [0x02] == 0xfe &&		  header [0x03] == 0xfe) ? OSAL_OK : RET_NOT_COMPAT;#if defined (CHECK_11111111)      if (result == OSAL_OK)	result = (header [0x14] == 0x11 &&		  header [0x15] == 0x11 &&		  header [0x16] == 0x11 &&		  header [0x17] == 0x11) ? OSAL_OK : RET_NOT_COMPAT;#endif /* CHECK_11111111 defined? */      if (result == OSAL_OK)	{ /* check whether image is one or multiple parts */	  if (header [0x62] == 0x22 &&	      header [0x63] == 0x22 &&	      header [0x64] == 0x22 &&	      header [0x65] == 0x22)	    single_file = 1;	  else if (header [0x62] == 0x88 &&		   header [0x63] == 0x88 &&		   header [0x64] == 0x88 &&		   header [0x65] == 0x88)	    single_file = 0;	  else	    result = RET_BAD_COMPAT;	}      mode = dm_mode1_plain;      if (result == OSAL_OK)	{ /* mode1/mode2? */	  switch (header [0x7e])	    {	    case 0x01: mode = dm_mode1_plain; break;	    case 0x02: mode = dm_mode2_plain; break;	    default:   result = RET_BAD_COMPAT;	    }	  if (result == OSAL_OK)	    { /* total number of sectors */	      num_sectors = (header [0x37] << 24 |			     header [0x36] << 16 |			     header [0x35] <<  8 |			     header [0x34]);	      result = (num_sectors == (u_int32_t)(header [0x3b] << 24 |					header [0x3a] << 16 |					header [0x39] <<  8 |					header [0x38]) &&			num_sectors == (u_int32_t)(header [0x7d] << 24 |					header [0x7c] << 16 |					header [0x7b] <<  8 |					header [0x7a])) ? OSAL_OK : RET_BAD_COMPAT;	    }	}      if (result == OSAL_OK)	{	  img_base = img_base_alloc (RAW_SECTOR_SIZE [mode], RAW_SKIP_OFFSET [mode]);	  result = img_base != NULL ? OSAL_OK : RET_NO_MEM;	}      if (result == OSAL_OK)	{	  if (single_file)	    /* single file only -> CD image or DVD image with size less than 2GB */	    result = img_base_add_part (img_base, path, num_sectors,					(u_int64_t) 152, device_sector_size);	  else	    { /* multiple files */	      u_int32_t num_files = header [0x98], i;	      for (i=0; i<num_files; ++i)		{		  char source [MAX_PATH];		  u_int32_t length_s = (header [FILE_SIZES_OFFSET [i] + 3] << 24 |				     header [FILE_SIZES_OFFSET [i] + 2] << 16 |				     header [FILE_SIZES_OFFSET [i] + 1] <<  8 |				     header [FILE_SIZES_OFFSET [i]]);		  strncpy (source, (const char*) header + FILE_NAMES_OFFSET [i], 0x0104);		  source [0x0103] = '\0';		  result = lookup_file (source, path);		  if (result == RET_OK)		    ; /* linked file found */		  else if (result == RET_FILE_NOT_FOUND)		    result = RET_BROKEN_LINK;		  if (result == RET_OK)		    result = osal_get_volume_sect_size (source, &device_sector_size);		  if (result == RET_OK)		    result = img_base_add_part (img_base, source, length_s,						(u_int64_t) 0, device_sector_size);		}	    }	}      if (result == OSAL_OK)	{	  *iin = (iin_t*) img_base;	  switch (mode)	    {	    case dm_mode1_plain: strcpy ((*iin)->source_type, "Global Image, Mode1"); break;	    case dm_mode2_plain: strcpy ((*iin)->source_type, "Global Image, Mode2"); break;	    }	}      else if (img_base != NULL)	((iin_t*) img_base)->close ((iin_t*) img_base);      osal_close (in);    }  return (result);}