<?php
/**
* @version $Id: pcltar.lib.php 49 2005-09-15 02:55:27Z rhuk $
* @package Joomla
*/

// no direct access
defined( '_VALID_MOS' ) or die( 'Restricted access' );

// --------------------------------------------------------------------------------
// PhpConcept Library - Tar Module 1.3
// --------------------------------------------------------------------------------
// License GNU/GPL - Vincent Blavet - August 2001
// http://www.phpconcept.net
// --------------------------------------------------------------------------------
//
// Presentation :
//	PclTar is a library that allow you to create a GNU TAR + GNU ZIP archive,
//	to add files or directories, to extract all the archive or a part of it.
//	So far tests show that the files generated by PclTar are readable by
//	gzip tools and WinZip application.
//
// Description :
//	See readme.txt (English & Fran�ais) and http://www.phpconcept.net
//
// Warning :
//	This library and the associated files are non commercial, non professional
//	work.
//	It should not have unexpected results. However if any damage is caused by
//	this software the author can not be responsible.
//	The use of this software is at the risk of the user.
//
// --------------------------------------------------------------------------------

// ----- Look for double include
if (!defined("PCL_TAR"))
{
  define( "PCL_TAR", 1 );

  // ----- Configuration variable
  // Theses values may be changed by the user of PclTar library
  if (!isset($g_pcltar_lib_dir))
	$g_pcltar_lib_dir = "lib";

  // ----- Error codes
  //	-1 : Unable to open file in binary write mode
  //	-2 : Unable to open file in binary read mode
  //	-3 : Invalid parameters
  //	-4 : File does not exist
  //	-5 : Filename is too long (max. 99)
  //	-6 : Not a valid tar file
  //	-7 : Invalid extracted file size
  //	-8 : Unable to create directory
  //	-9 : Invalid archive extension
  //  -10 : Invalid archive format
  //  -11 : Unable to delete file (unlink)
  //  -12 : Unable to rename file (rename)
  //  -13 : Invalid header checksum


// --------------------------------------------------------------------------------
// ***** UNDER THIS LINE NOTHING NEEDS TO BE MODIFIED *****
// --------------------------------------------------------------------------------

  // ----- Global variables
  $g_pcltar_version = "1.3";

  // ----- Extract extension type (.php3/.php/...)
//  $g_pcltar_extension = substr(strrchr(basename($PATH_TRANSLATED), '.'), 1);
  $g_pcltar_extension = substr(strrchr(basename(@$_SERVER["PATH_TRANSLATED"]), '.'), 1);

  // ----- Include other libraries
  // This library should be called by each script before the include of PhpZip
  // Library in order to limit the potential 'lib' directory path problem.

  if (!defined("PCLERROR_LIB"))
  {
	include($g_pcltar_lib_dir."/pclerror.lib.".$g_pcltar_extension);
  }
  if (!defined("PCLTRACE_LIB"))
  {
	include($g_pcltar_lib_dir."/pcltrace.lib.".$g_pcltar_extension);
  }

  // --------------------------------------------------------------------------------
  // Function : PclTarCreate()
  // Description :
  //	Creates a new archive with name $p_tarname containing the files and/or
  //	directories indicated in $p_list. If the tar filename extension is
  //	".tar", the file will not be compressed. If it is ".tar.gz" or ".tgz"
  //	it will be a gzip compressed tar archive.
  //	If you want to use an other extension, you must indicate the mode in
  //	$p_mode ("tar" or "tgz").
  //	$p_add_dir and $p_remove_dir give you the ability to store a path
  //	which is not the real path of the files.
  // Parameters :
  //	$p_tarname : Name of an existing tar file
  //	$p_filelist : An array containing file or directory names, or
  //				 a string containing one filename or directory name, or
  //				 a string containing a list of filenames and/or directory
  //				 names separated by spaces.
  //	$p_mode : "tar" for normal tar archive, "tgz" for gzipped tar archive,
  //			 if $p_mode is not specified, it will be determined by the extension.
  //	$p_add_dir : Path to add in the filename path archived
  //	$p_remove_dir : Path to remove in the filename path archived
  // Return Values :
  //	1 on success, or an error code (see table at the beginning).
  // --------------------------------------------------------------------------------
  function PclTarCreate($p_tarname, $p_filelist="", $p_mode="", $p_add_dir="", $p_remove_dir="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarCreate", "tar=$p_tarname, file='$p_filelist', mode=$p_mode, add_dir='$p_add_dir', remove_dir='$p_remove_dir'");
	$v_result=1;

	// ----- Look for default mode
	if (($p_mode == "") || (($p_mode!="tar") && ($p_mode!="tgz")))
	{
	  // ----- Extract the tar format from the extension
	  if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Trace
	  TrFctMessage(__FILE__, __LINE__, 1, "Auto mode selected : found $p_mode");
	}

	// ----- Look if the $p_filelist is really an array
	if (is_array($p_filelist))
	{
	  // ----- Call the create fct
	  $v_result = PclTarHandleCreate($p_tarname, $p_filelist, $p_mode, $p_add_dir, $p_remove_dir);
	}

	// ----- Look if the $p_filelist is a string
	else if (is_string($p_filelist))
	{
	  // ----- Create a list with the elements from the string
	  $v_list = explode(" ", $p_filelist);

	  // ----- Call the create fct
	  $v_result = PclTarHandleCreate($p_tarname, $v_list, $p_mode, $p_add_dir, $p_remove_dir);
	}

	// ----- Invalid variable
	else
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid variable type p_filelist");
	  $v_result = -3;
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarAdd()
  // Description :
  //	PLEASE DO NOT USE ANY MORE THIS FUNCTION. Use PclTarAddList().
  //
  //	This function is maintained only for compatibility reason
  //
  // Parameters :
  //	$p_tarname : Name of an existing tar file
  //	$p_filelist : An array containing file or directory names, or
  //				 a string containing one filename or directory name, or
  //				 a string containing a list of filenames and/or directory
  //				 names separated by spaces.
  // Return Values :
  //	1 on success,
  //	Or an error code (see list on top).
  // --------------------------------------------------------------------------------
  function PclTarAdd($p_tarname, $p_filelist)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarAdd", "tar=$p_tarname, file=$p_filelist");
	$v_result=1;
	$v_list_detail = array();

	// ----- Extract the tar format from the extension
	if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	{
	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Look if the $p_filelist is really an array
	if (is_array($p_filelist))
	{
	  // ----- Call the add fct
	  $v_result = PclTarHandleAppend($p_tarname, $p_filelist, $p_mode, $v_list_detail, "", "");
	}

	// ----- Look if the $p_filelist is a string
	else if (is_string($p_filelist))
	{
	  // ----- Create a list with the elements from the string
	  $v_list = explode(" ", $p_filelist);

	  // ----- Call the add fct
	  $v_result = PclTarHandleAppend($p_tarname, $v_list, $p_mode, $v_list_detail, "", "");
	}

	// ----- Invalid variable
	else
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid variable type p_filelist");
	  $v_result = -3;
	}

	// ----- Cleaning
	unset($v_list_detail);

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarAddList()
  // Description :
  //	Add a list of files or directories ($p_filelist) in the tar archive $p_tarname.
  //	The list can be an array of file/directory names or a string with names
  //	separated by one space.
  //	$p_add_dir and $p_remove_dir will give the ability to memorize a path which is
  //	different from the real path of the file. This is usefull if you want to have PclTar
  //	running in any directory, and memorize relative path from an other directory.
  //	If $p_mode is not set it will be automatically computed from the $p_tarname
  //	extension (.tar, .tar.gz or .tgz).
  // Parameters :
  //	$p_tarname : Name of an existing tar file
  //	$p_filelist : An array containing file or directory names, or
  //				 a string containing one filename or directory name, or
  //				 a string containing a list of filenames and/or directory
  //				 names separated by spaces.
  //	$p_add_dir : Path to add in the filename path archived
  //	$p_remove_dir : Path to remove in the filename path archived
  //	$p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
  // Return Values :
  //	1 on success,
  //	Or an error code (see list on top).
  // --------------------------------------------------------------------------------
  function PclTarAddList($p_tarname, $p_filelist, $p_add_dir="", $p_remove_dir="", $p_mode="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarAddList", "tar=$p_tarname, file=$p_filelist, p_add_dir='$p_add_dir', p_remove_dir='$p_remove_dir', mode=$p_mode");
	$v_result=1;
	$p_list_detail = array();

	// ----- Extract the tar format from the extension
	if (($p_mode == "") || (($p_mode!="tar") && ($p_mode!="tgz")))
	{
	  if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }
	}

	// ----- Look if the $p_filelist is really an array
	if (is_array($p_filelist))
	{
	  // ----- Call the add fct
	  $v_result = PclTarHandleAppend($p_tarname, $p_filelist, $p_mode, $p_list_detail, $p_add_dir, $p_remove_dir);
	}

	// ----- Look if the $p_filelist is a string
	else if (is_string($p_filelist))
	{
	  // ----- Create a list with the elements from the string
	  $v_list = explode(" ", $p_filelist);

	  // ----- Call the add fct
	  $v_result = PclTarHandleAppend($p_tarname, $v_list, $p_mode, $p_list_detail, $p_add_dir, $p_remove_dir);
	}

	// ----- Invalid variable
	else
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid variable type p_filelist");
	  $v_result = -3;
	}

	// ----- Return
	if ($v_result != 1)
	{
	  TrFctEnd(__FILE__, __LINE__, 0);
	  return 0;
	}
	TrFctEnd(__FILE__, __LINE__, $p_list_detail);
	return $p_list_detail;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarList()
  // Description :
  //	Gives the list of all the files present in the tar archive $p_tarname.
  //	The list is the function result, it will be 0 on error.
  //	Depending on the $p_tarname extension (.tar, .tar.gz or .tgz) the
  //	function will determine the type of the archive.
  // Parameters :
  //	$p_tarname : Name of an existing tar file
  //	$p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
  // Return Values :
  //  0 on error (Use PclErrorCode() and PclErrorString() for more info)
  //  or
  //  An array containing file properties. Each file properties is an array of
  //  properties.
  //  The properties (array field names) are :
  //	filename, size, mode, uid, gid, mtime, typeflag, status
  //  Exemple : $v_list = PclTarList("my.tar");
  //			for ($i=0; $i<sizeof($v_list); $i++)
  //			  echo "Filename :'".$v_list[$i][filename]."'<br>";
  // --------------------------------------------------------------------------------
  function PclTarList($p_tarname, $p_mode="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarList", "tar=$p_tarname, mode='$p_mode'");
	$v_result=1;

	// ----- Extract the tar format from the extension
	if (($p_mode == "") || (($p_mode!="tar") && ($p_mode!="tgz")))
	{
	  if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return 0;
	  }
	}

	// ----- Call the extracting fct
	$p_list = array();
	if (($v_result = PclTarHandleExtract($p_tarname, 0, $p_list, "list", "", $p_mode, "")) != 1)
	{
	  unset($p_list);
	  TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
	  return(0);
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $p_list);
	return $p_list;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarExtract()
  // Description :
  //	Extract all the files present in the archive $p_tarname, in the directory
  //	$p_path. The relative path of the archived files are keep and become
  //	relative to $p_path.
  //	If a file with the same name already exists it will be replaced.
  //	If the path to the file does not exist, it will be created.
  //	Depending on the $p_tarname extension (.tar, .tar.gz or .tgz) the
  //	function will determine the type of the archive.
  // Parameters :
  //	$p_tarname : Name of an existing tar file.
  //	$p_path : Path where the files will be extracted. The files will use
  //			 their memorized path from $p_path.
  //			 If $p_path is "", files will be extracted in "./".
  //	$p_remove_path : Path to remove (from the file memorized path) while writing the
  //					extracted files. If the path does not match the file path,
  //					the file is extracted with its memorized path.
  //					$p_path and $p_remove_path are commulative.
  //	$p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
  // Return Values :
  //	Same as PclTarList()
  // --------------------------------------------------------------------------------
  function PclTarExtract($p_tarname, $p_path="./", $p_remove_path="", $p_mode="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarExtract", "tar='$p_tarname', path='$p_path', remove_path='$p_remove_path', mode='$p_mode'");
	$v_result=1;

	// ----- Extract the tar format from the extension
	if (($p_mode == "") || (($p_mode!="tar") && ($p_mode!="tgz")))
	{
	  if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return 0;
	  }
	}

	// ----- Call the extracting fct
	if (($v_result = PclTarHandleExtract($p_tarname, 0, $p_list, "complete", $p_path, $p_mode, $p_remove_path)) != 1)
	{
	  TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
	  return(0);
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $p_list);
	return $p_list;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarExtractList()
  // Description :
  //	Extract the files present in the archive $p_tarname and specified in
  //	$p_filelist, in the directory
  //	$p_path. The relative path of the archived files are keep and become
  //	relative to $p_path.
  //	If a directory is sp�cified in the list, all the files from this directory
  //	will be extracted.
  //	If a file with the same name already exists it will be replaced.
  //	If the path to the file does not exist, it will be created.
  //	Depending on the $p_tarname extension (.tar, .tar.gz or .tgz) the
  //	function will determine the type of the archive.
  // Parameters :
  //	$p_tarname : Name of an existing tar file
  //	$p_filelist : An array containing file or directory names, or
  //				 a string containing one filename or directory name, or
  //				 a string containing a list of filenames and/or directory
  //				 names separated by spaces.
  //	$p_path : Path where the files will be extracted. The files will use
  //			 their memorized path from $p_path.
  //			 If $p_path is "", files will be extracted in "./".
  //	$p_remove_path : Path to remove (from the file memorized path) while writing the
  //					extracted files. If the path does not match the file path,
  //					the file is extracted with its memorized path.
  //					$p_path and $p_remove_path are commulative.
  //	$p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
  // Return Values :
  //	Same as PclTarList()
  // --------------------------------------------------------------------------------
  function PclTarExtractList($p_tarname, $p_filelist, $p_path="./", $p_remove_path="", $p_mode="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarExtractList", "tar=$p_tarname, list, path=$p_path, remove_path='$p_remove_path', mode='$p_mode'");
	$v_result=1;

	// ----- Extract the tar format from the extension
	if (($p_mode == "") || (($p_mode!="tar") && ($p_mode!="tgz")))
	{
	  if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return 0;
	  }
	}

	// ----- Look if the $p_filelist is really an array
	if (is_array($p_filelist))
	{
	  // ----- Call the extracting fct
	  if (($v_result = PclTarHandleExtract($p_tarname, $p_filelist, $p_list, "partial", $p_path, $v_tar_mode, $p_remove_path)) != 1)
	  {
		TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
		return(0);
	  }
	}

	// ----- Look if the $p_filelist is a string
	else if (is_string($p_filelist))
	{
	  // ----- Create a list with the elements from the string
	  $v_list = explode(" ", $p_filelist);

	  // ----- Call the extracting fct
	  if (($v_result = PclTarHandleExtract($p_tarname, $v_list, $p_list, "partial", $p_path, $v_tar_mode, $p_remove_path)) != 1)
	  {
		TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
		return(0);
	  }
	}

	// ----- Invalid variable
	else
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid variable type p_filelist");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return 0;
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $p_list);
	return $p_list;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarExtractIndex()
  // Description :
  //	Extract the files present in the archive $p_tarname and specified at
  //	the indexes in $p_index, in the directory
  //	$p_path. The relative path of the archived files are keep and become
  //	relative to $p_path.
  //	If a directory is specified in the list, the directory only is created. All
  //	the file stored in this archive for this directory
  //	are not extracted.
  //	If a file with the same name already exists it will be replaced.
  //	If the path to the file does not exist, it will be created.
  //	Depending on the $p_tarname extension (.tar, .tar.gz or .tgz) the
  //	function will determine the type of the archive.
  // Parameters :
  //	$p_tarname : Name of an existing tar file
  //	$p_index : A single index (integer) or a string of indexes of files to
  //			  extract. The form of the string is "0,4-6,8-12" with only numbers
  //			  and '-' for range or ',' to separate ranges. No spaces or ';'
  //			  are allowed.
  //	$p_path : Path where the files will be extracted. The files will use
  //			 their memorized path from $p_path.
  //			 If $p_path is "", files will be extracted in "./".
  //	$p_remove_path : Path to remove (from the file memorized path) while writing the
  //					extracted files. If the path does not match the file path,
  //					the file is extracted with its memorized path.
  //					$p_path and $p_remove_path are commulative.
  //	$p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
  // Return Values :
  //	Same as PclTarList()
  // --------------------------------------------------------------------------------
  function PclTarExtractIndex($p_tarname, $p_index, $p_path="./", $p_remove_path="", $p_mode="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarExtractIndex", "tar=$p_tarname, index='$p_index', path=$p_path, remove_path='$p_remove_path', mode='$p_mode'");
	$v_result=1;

	// ----- Extract the tar format from the extension
	if (($p_mode == "") || (($p_mode!="tar") && ($p_mode!="tgz")))
	{
	  if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return 0;
	  }
	}

	// ----- Look if the $p_index is really an integer
	if (is_integer($p_index))
	{
	  // ----- Call the extracting fct
	  if (($v_result = PclTarHandleExtractByIndexList($p_tarname, "$p_index", $p_list, $p_path, $p_remove_path, $v_tar_mode)) != 1)
	  {
		TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
		return(0);
	  }
	}

	// ----- Look if the $p_filelist is a string
	else if (is_string($p_index))
	{
	  // ----- Call the extracting fct
	  if (($v_result = PclTarHandleExtractByIndexList($p_tarname, $p_index, $p_list, $p_path, $p_remove_path, $v_tar_mode)) != 1)
	  {
		TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
		return(0);
	  }
	}

	// ----- Invalid variable
	else
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid variable type $p_index");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return 0;
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $p_list);
	return $p_list;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarDelete()
  // Description :
  //	This function deletes from the archive $p_tarname the files which are listed
  //	in $p_filelist. $p_filelist can be a string with file names separated by
  //	spaces, or an array containing the file names.
  // Parameters :
  //	$p_tarname : Name of an existing tar file
  //	$p_filelist : An array or a string containing file names to remove from the
  //				 archive.
  //	$p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
  // Return Values :
  //	List of the files which are kept in the archive (same format as PclTarList())
  // --------------------------------------------------------------------------------
  function PclTarDelete($p_tarname, $p_filelist, $p_mode="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarDelete", "tar='$p_tarname', list='$p_filelist', mode='$p_mode'");
	$v_result=1;

	// ----- Extract the tar format from the extension
	if (($p_mode == "") || (($p_mode!="tar") && ($p_mode!="tgz")))
	{
	  if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return 0;
	  }
	}

	// ----- Look if the $p_filelist is really an array
	if (is_array($p_filelist))
	{
	  // ----- Call the extracting fct
	  if (($v_result = PclTarHandleDelete($p_tarname, $p_filelist, $p_list, $p_mode)) != 1)
	  {
		TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
		return(0);
	  }
	}

	// ----- Look if the $p_filelist is a string
	else if (is_string($p_filelist))
	{
	  // ----- Create a list with the elements from the string
	  $v_list = explode(" ", $p_filelist);

	  // ----- Call the extracting fct
	  if (($v_result = PclTarHandleDelete($p_tarname, $v_list, $p_list, $p_mode)) != 1)
	  {
		TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
		return(0);
	  }
	}

	// ----- Invalid variable
	else
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid variable type p_filelist");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return 0;
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $p_list);
	return $p_list;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarUpdate()
  // Description :
  //	This function updates the files in $p_filelist which are already in the
  //	$p_tarname archive with an older last modified date. If the file does not
  //	exist, it is added at the end of the archive.
  // Parameters :
  //	$p_tarname : Name of an existing tar file
  //	$p_filelist : An array or a string containing file names to update from the
  //				 archive.
  //	$p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
  // Return Values :
  //	List of the files contained in the archive. The field status contains
  //	"updated", "not_updated", "added" or "ok" for the files not concerned.
  // --------------------------------------------------------------------------------
  function PclTarUpdate($p_tarname, $p_filelist, $p_mode="", $p_add_dir="", $p_remove_dir="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarUpdate", "tar='$p_tarname', list='$p_filelist', mode='$p_mode'");
	$v_result=1;

	// ----- Extract the tar format from the extension
	if (($p_mode == "") || (($p_mode!="tar") && ($p_mode!="tgz")))
	{
	  if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return 0;
	  }
	}

	// ----- Look if the $p_filelist is really an array
	if (is_array($p_filelist))
	{
	  // ----- Call the extracting fct
	  if (($v_result = PclTarHandleUpdate($p_tarname, $p_filelist, $p_list, $p_mode, $p_add_dir, $p_remove_dir)) != 1)
	  {
		TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
		return(0);
	  }
	}

	// ----- Look if the $p_filelist is a string
	else if (is_string($p_filelist))
	{
	  // ----- Create a list with the elements from the string
	  $v_list = explode(" ", $p_filelist);

	  // ----- Call the extracting fct
	  if (($v_result = PclTarHandleUpdate($p_tarname, $v_list, $p_list, $p_mode, $p_add_dir, $p_remove_dir)) != 1)
	  {
		TrFctEnd(__FILE__, __LINE__, 0, PclErrorString());
		return(0);
	  }
	}

	// ----- Invalid variable
	else
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid variable type p_filelist");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return 0;
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $p_list);
	return $p_list;
  }
  // --------------------------------------------------------------------------------


  // --------------------------------------------------------------------------------
  // Function : PclTarMerge()
  // Description :
  //	This function add the content of $p_tarname_add at the end of $p_tarname.
  // Parameters :
  //	$p_tarname : Name of an existing tar file
  //	$p_tarname_add : Name of an existing tar file taht will be added at the end
  //					of $p_tarname.
  //	$p_mode : 'tar' or 'tgz', if not set, will be determined by $p_tarname extension
  //	$p_mode_add : 'tar' or 'tgz', if not set, will be determined by $p_tarname_add
  //				 extension
  // Return Values :
  //	List of the files contained in the archive. The field status contains
  //	"updated", "not_updated", "added" or "ok" for the files not concerned.
  // --------------------------------------------------------------------------------
  function PclTarMerge($p_tarname, $p_tarname_add, $p_mode="", $p_mode_add="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarMerge", "tar='$p_tarname', tar_add='$p_tarname_add', mode='$p_mode', mode_add='$p_mode_add'");
	$v_result=1;

	// ----- Check the parameters
	if (($p_tarname == "") || ($p_tarname_add == ""))
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid empty archive name");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Extract the tar format from the extension
	if (($p_mode == "") || (($p_mode!="tar") && ($p_mode!="tgz")))
	{
	  if (($p_mode = PclTarHandleExtension($p_tarname)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return 0;
	  }
	}
	if (($p_mode_add == "") || (($p_mode_add!="tar") && ($p_mode_add!="tgz")))
	{
	  if (($p_mode_add = PclTarHandleExtension($p_tarname_add)) == "")
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return 0;
	  }
	}

	// ----- Clear filecache
	clearstatcache();

	// ----- Check the file size
	if ((!is_file($p_tarname)) ||
		(((($v_size = filesize($p_tarname)) % 512) != 0) && ($p_mode=="tar")))
	{
	  // ----- Error log
	  if (!is_file($p_tarname))
		PclErrorLog(-4, "Archive '$p_tarname' does not exist");
	  else
		PclErrorLog(-6, "Archive '$p_tarname' has invalid size ".filesize($p_tarname)."(not a 512 block multiple)");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}
	if ((!is_file($p_tarname_add)) ||
		(((($v_size_add = filesize($p_tarname_add)) % 512) != 0) && ($p_mode_add=="tar")))
	{
	  // ----- Error log
	  if (!is_file($p_tarname_add))
		PclErrorLog(-4, "Archive '$p_tarname_add' does not exist");
	  else
		PclErrorLog(-6, "Archive '$p_tarname_add' has invalid size ".filesize($p_tarname_add)."(not a 512 block multiple)");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Look for compressed archive
	if ($p_mode == "tgz")
	{
	  // ----- Open the file in read mode
	  if (($p_tar = @gzopen($p_tarname, "rb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Open a temporary file in write mode
	  $v_temp_tarname = uniqid("pcltar-").".tmp";
	  TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
	  if (($v_temp_tar = @gzopen($v_temp_tarname, "wb")) == 0)
	  {
		// ----- Close tar file
		gzclose($p_tar);

		// ----- Error log
		PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Read the first 512 bytes block
	  $v_buffer = gzread($p_tar, 512);

	  // ----- Read the following blocks but not the last one
	  if (!gzeof($p_tar))
	  {
		TrFctMessage(__FILE__, __LINE__, 3, "More than one 512 block file");
		$i=1;

		// ----- Read new 512 block and write the already read
		do{
		  // ----- Write the already read block
		  $v_binary_data = pack("a512", "$v_buffer");
		  gzputs($v_temp_tar, $v_binary_data);

		  $i++;
		  TrFctMessage(__FILE__, __LINE__, 3, "Reading block $i");

		  // ----- Read next block
		  $v_buffer = gzread($p_tar, 512);

		} while (!gzeof($p_tar));

		TrFctMessage(__FILE__, __LINE__, 3, "$i 512 bytes blocks");
	  }
	}

	// ----- Look for uncompressed tar file
	else if ($p_mode=="tar")
	{
	  // ----- Open the tar file
	  if (($p_tar = fopen($p_tarname, "r+b")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-1, "Unable to open file '$p_tarname' in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Go to the beginning of last block
	  TrFctMessage(__FILE__, __LINE__, 4, "Position before :".($p_mode=="tar"?ftell($p_tar):gztell($p_tar)));
	  fseek($p_tar, $v_size-512);
	  TrFctMessage(__FILE__, __LINE__, 4, "Position after :".($p_mode=="tar"?ftell($p_tar):gztell($p_tar)));
	}

	// ----- Look for unknown type
	else
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid tar mode $p_mode");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Look for type of archive to add
	if ($p_mode_add == "tgz")
	{
	  TrFctMessage(__FILE__, __LINE__, 4, "Opening file $p_tarname_add");

	  // ----- Open the file in read mode
	  if (($p_tar_add = @gzopen($p_tarname_add, "rb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-2, "Unable to open file '$p_tarname_add' in binary read mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Read the first 512 bytes block
	  $v_buffer = gzread($p_tar_add, 512);

	  // ----- Read the following blocks but not the last one
	  if (!gzeof($p_tar_add))
	  {
		TrFctMessage(__FILE__, __LINE__, 3, "More than one 512 block file");
		$i=1;

		// ----- Read new 512 block and write the already read
		do{
		  // ----- Write the already read block
		  $v_binary_data = pack("a512", "$v_buffer");
		  if ($p_mode=="tar")
			fputs($p_tar, $v_binary_data);
		  else
			gzputs($v_temp_tar, $v_binary_data);

		  $i++;
		  TrFctMessage(__FILE__, __LINE__, 3, "Reading block $i");

		  // ----- Read next block
		  $v_buffer = gzread($p_tar_add, 512);

		} while (!gzeof($p_tar_add));

		TrFctMessage(__FILE__, __LINE__, 3, "$i 512 bytes blocks");
	  }

	  // ----- Close the files
	  gzclose($p_tar_add);
	}

	// ----- Look for uncompressed tar file
	else if ($p_mode=="tar")
	{
	  // ----- Open the file in read mode
	  if (($p_tar_add = @fopen($p_tarname_add, "rb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-2, "Unable to open file '$p_tarname_add' in binary read mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Read the first 512 bytes block
	  $v_buffer = fread($p_tar_add, 512);

	  // ----- Read the following blocks but not the last one
	  if (!feof($p_tar_add))
	  {
		TrFctMessage(__FILE__, __LINE__, 3, "More than one 512 block file");
		$i=1;

		// ----- Read new 512 block and write the already read
		do{
		  // ----- Write the already read block
		  $v_binary_data = pack("a512", "$v_buffer");
		  if ($p_mode=="tar")
			fputs($p_tar, $v_binary_data);
		  else
			gzputs($v_temp_tar, $v_binary_data);

		  $i++;
		  TrFctMessage(__FILE__, __LINE__, 3, "Reading block $i");

		  // ----- Read next block
		  $v_buffer = fread($p_tar_add, 512);

		} while (!feof($p_tar_add));

		TrFctMessage(__FILE__, __LINE__, 3, "$i 512 bytes blocks");
	  }

	  // ----- Close the files
	  fclose($p_tar_add);
	}

	// ----- Call the footer of the tar archive
	$v_result = PclTarHandleFooter($p_tar, $p_mode);

	// ----- Look for closing compressed archive
	if ($p_mode == "tgz")
	{
	  // ----- Close the files
	  gzclose($p_tar);
	  gzclose($v_temp_tar);

	  // ----- Unlink tar file
	  if (!@unlink($p_tarname))
	  {
		// ----- Error log
		PclErrorLog(-11, "Error while deleting archive name $p_tarname");
	  }

	  // ----- Rename tar file
	  if (!@rename($v_temp_tarname, $p_tarname))
	  {
		// ----- Error log
		PclErrorLog(-12, "Error while renaming temporary file $v_temp_tarname to archive name $p_tarname");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, $v_result);
	  return $v_result;
	}

	// ----- Look for closing uncompressed tar file
	else if ($p_mode=="tar")
	{
	  // ----- Close the tarfile
	  fclose($p_tar);
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------


// --------------------------------------------------------------------------------
// ***** UNDER THIS LINE ARE DEFINED PRIVATE INTERNAL FUNCTIONS *****
// *****														*****
// *****		THESES FUNCTIONS MUST NOT BE USED DIRECTLY		*****
// --------------------------------------------------------------------------------



  // --------------------------------------------------------------------------------
  // Function : PclTarHandleCreate()
  // Description :
  // Parameters :
  //	$p_tarname : Name of the tar file
  //	$p_list : An array containing the file or directory names to add in the tar
  //	$p_mode : "tar" for normal tar archive, "tgz" for gzipped tar archive
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleCreate($p_tarname, $p_list, $p_mode, $p_add_dir="", $p_remove_dir="")
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleCreate", "tar=$p_tarname, list, mode=$p_mode, add_dir='$p_add_dir', remove_dir='$p_remove_dir'");
	$v_result=1;
	$v_list_detail = array();

	// ----- Check the parameters
	if (($p_tarname == "") || (($p_mode != "tar") && ($p_mode != "tgz")))
	{
	  // ----- Error log
	  if ($p_tarname == "")
		PclErrorLog(-3, "Invalid empty archive name");
	  else
		PclErrorLog(-3, "Unknown mode '$p_mode'");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Look for tar file
	if ($p_mode == "tar")
	{
	  // ----- Open the tar file
	  if (($p_tar = fopen($p_tarname, "wb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-1, "Unable to open file [$p_tarname] in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Call the adding fct inside the tar
	  if (($v_result = PclTarHandleAddList($p_tar, $p_list, $p_mode, $v_list_detail, $p_add_dir, $p_remove_dir)) == 1)
	  {
		// ----- Call the footer of the tar archive
		$v_result = PclTarHandleFooter($p_tar, $p_mode);
	  }

	  // ----- Close the tarfile
	  fclose($p_tar);
	}
	// ----- Look for tgz file
	else
	{
	  // ----- Open the tar file
	  if (($p_tar = @gzopen($p_tarname, "wb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-1, "Unable to open file [$p_tarname] in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Call the adding fct inside the tar
	  if (($v_result = PclTarHandleAddList($p_tar, $p_list, $p_mode, $v_list_detail, $p_add_dir, $p_remove_dir)) == 1)
	  {
		// ----- Call the footer of the tar archive
		$v_result = PclTarHandleFooter($p_tar, $p_mode);
	  }

	  // ----- Close the tarfile
	  gzclose($p_tar);
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleAppend()
  // Description :
  // Parameters :
  //	$p_tarname : Name of the tar file
  //	$p_list : An array containing the file or directory names to add in the tar
  //	$p_mode : "tar" for normal tar archive, "tgz" for gzipped tar archive
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleAppend($p_tarname, $p_list, $p_mode, &$p_list_detail, $p_add_dir, $p_remove_dir)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleAppend", "tar=$p_tarname, list, mode=$p_mode");
	$v_result=1;

	// ----- Check the parameters
	if ($p_tarname == "")
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid empty archive name");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	clearstatcache();

	// ----- Check the file size
	if ((!is_file($p_tarname)) ||
		(((($v_size = filesize($p_tarname)) % 512) != 0) && ($p_mode=="tar")))
	{
	  // ----- Error log
	  if (!is_file($p_tarname))
		PclErrorLog(-4, "Archive '$p_tarname' does not exist");
	  else
		PclErrorLog(-6, "Archive '$p_tarname' has invalid size ".filesize($p_tarname)."(not a 512 block multiple)");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Look for compressed archive
	if ($p_mode == "tgz")
	{
	  // ----- Open the file in read mode
	  if (($p_tar = @gzopen($p_tarname, "rb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Open a temporary file in write mode
	  $v_temp_tarname = uniqid("pcltar-").".tmp";
	  TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
	  if (($v_temp_tar = @gzopen($v_temp_tarname, "wb")) == 0)
	  {
		// ----- Close tar file
		gzclose($p_tar);

		// ----- Error log
		PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Read the first 512 bytes block
	  $v_buffer = gzread($p_tar, 512);

	  // ----- Read the following blocks but not the last one
	  if (!gzeof($p_tar))
	  {
		TrFctMessage(__FILE__, __LINE__, 3, "More than one 512 block file");
		$i=1;

		// ----- Read new 512 block and write the already read
		do{
		  // ----- Write the already read block
		  $v_binary_data = pack("a512", "$v_buffer");
		  gzputs($v_temp_tar, $v_binary_data);

		  $i++;
		  TrFctMessage(__FILE__, __LINE__, 3, "Reading block $i");

		  // ----- Read next block
		  $v_buffer = gzread($p_tar, 512);

		} while (!gzeof($p_tar));

		TrFctMessage(__FILE__, __LINE__, 3, "$i 512 bytes blocks");
	  }

	  // ----- Call the adding fct inside the tar
	  if (($v_result = PclTarHandleAddList($v_temp_tar, $p_list, $p_mode, $p_list_detail, $p_add_dir, $p_remove_dir)) == 1)
	  {
		// ----- Call the footer of the tar archive
		$v_result = PclTarHandleFooter($v_temp_tar, $p_mode);
	  }

	  // ----- Close the files
	  gzclose($p_tar);
	  gzclose($v_temp_tar);

	  // ----- Unlink tar file
	  if (!@unlink($p_tarname))
	  {
		// ----- Error log
		PclErrorLog(-11, "Error while deleting archive name $p_tarname");
	  }

	  // ----- Rename tar file
	  if (!@rename($v_temp_tarname, $p_tarname))
	  {
		// ----- Error log
		PclErrorLog(-12, "Error while renaming temporary file $v_temp_tarname to archive name $p_tarname");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, $v_result);
	  return $v_result;
	}

	// ----- Look for uncompressed tar file
	else if ($p_mode=="tar")
	{
	  // ----- Open the tar file
	  if (($p_tar = fopen($p_tarname, "r+b")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-1, "Unable to open file '$p_tarname' in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Go to the beginning of last block
	  TrFctMessage(__FILE__, __LINE__, 4, "Position before :".($p_mode=="tar"?ftell($p_tar):gztell($p_tar)));
	  fseek($p_tar, $v_size-512);
	  TrFctMessage(__FILE__, __LINE__, 4, "Position after :".($p_mode=="tar"?ftell($p_tar):gztell($p_tar)));

	  // ----- Call the adding fct inside the tar
	  if (($v_result = PclTarHandleAddList($p_tar, $p_list, $p_mode, $p_list_detail, $p_add_dir, $p_remove_dir)) == 1)
	  {
		// ----- Call the footer of the tar archive
		$v_result = PclTarHandleFooter($p_tar, $p_mode);
	  }

	  // ----- Close the tarfile
	  fclose($p_tar);
	}

	// ----- Look for unknown type
	else
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid tar mode $p_mode");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleAddList()
  // Description :
  //	$p_add_dir and $p_remove_dir will give the ability to memorize a path which is
  //	different from the real path of the file. This is usefull if you want to have PclTar
  //	running in any directory, and memorize relative path from an other directory.
  // Parameters :
  //	$p_tar : File descriptor of the tar archive
  //	$p_list : An array containing the file or directory names to add in the tar
  //	$p_mode : "tar" for normal tar archive, "tgz" for gzipped tar archive
  //	$p_list_detail : list of added files with their properties (specially the status field)
  //	$p_add_dir : Path to add in the filename path archived
  //	$p_remove_dir : Path to remove in the filename path archived
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleAddList($p_tar, $p_list, $p_mode, &$p_list_detail, $p_add_dir, $p_remove_dir)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleAddList", "tar='$p_tar', list, mode='$p_mode', add_dir='$p_add_dir', remove_dir='$p_remove_dir'");
	$v_result=1;
	$v_header = array();

	// ----- Recuperate the current number of elt in list
	$v_nb = sizeof($p_list_detail);

	// ----- Check the parameters
	if ($p_tar == 0)
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid file descriptor in file ".__FILE__.", line ".__LINE__);

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Check the arguments
	if (sizeof($p_list) == 0)
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid file list parameter (invalid or empty list)");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Loop on the files
	for ($j=0; ($j<count($p_list)) && ($v_result==1); $j++)
	{
	  // ----- Recuperate the filename
	  $p_filename = $p_list[$j];

	  TrFctMessage(__FILE__, __LINE__, 2, "Looking for file [$p_filename]");

	  // ----- Skip empty file names
	  if ($p_filename == "")
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Skip empty filename");
		continue;
	  }

	  // ----- Check the filename
	  if (!file_exists($p_filename))
	  {
		// ----- Error log
		TrFctMessage(__FILE__, __LINE__, 2, "File '$p_filename' does not exists");
		PclErrorLog(-4, "File '$p_filename' does not exists");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Check the path length
	  if (strlen($p_filename) > 99)
	  {
		// ----- Error log
		PclErrorLog(-5, "File name is too long (max. 99) : '$p_filename'");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  TrFctMessage(__FILE__, __LINE__, 4, "File position before header =".($p_mode=="tar"?ftell($p_tar):gztell($p_tar)));

	  // ----- Add the file
	  if (($v_result = PclTarHandleAddFile($p_tar, $p_filename, $p_mode, $v_header, $p_add_dir, $p_remove_dir)) != 1)
	  {
		// ----- Return status
		TrFctEnd(__FILE__, __LINE__, $v_result);
		return $v_result;
	  }

	  // ----- Store the file infos
	  $p_list_detail[$v_nb++] = $v_header;

	  // ----- Look for directory
	  if (is_dir($p_filename))
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "$p_filename is a directory");

		// ----- Look for path
		if ($p_filename != ".")
		  $v_path = $p_filename."/";
		else
		  $v_path = "";

		// ----- Read the directory for files and sub-directories
		$p_hdir = opendir($p_filename);
		$p_hitem = readdir($p_hdir); // '.' directory
		$p_hitem = readdir($p_hdir); // '..' directory
		while ($p_hitem = readdir($p_hdir))
		{
		  // ----- Look for a file
		  if (is_file($v_path.$p_hitem))
		  {
			TrFctMessage(__FILE__, __LINE__, 4, "Add the file '".$v_path.$p_hitem."'");

			// ----- Add the file
			if (($v_result = PclTarHandleAddFile($p_tar, $v_path.$p_hitem, $p_mode, $v_header, $p_add_dir, $p_remove_dir)) != 1)
			{
			  // ----- Return status
			  TrFctEnd(__FILE__, __LINE__, $v_result);
			  return $v_result;
			}

			// ----- Store the file infos
			$p_list_detail[$v_nb++] = $v_header;
		  }

		  // ----- Recursive call to PclTarHandleAddFile()
		  else
		  {
			TrFctMessage(__FILE__, __LINE__, 4, "'".$v_path.$p_hitem."' is a directory");

			// ----- Need an array as parameter
			$p_temp_list[0] = $v_path.$p_hitem;
			$v_result = PclTarHandleAddList($p_tar, $p_temp_list, $p_mode, $p_list_detail, $p_add_dir, $p_remove_dir);
		  }
		}

		// ----- Free memory for the recursive loop
		unset($p_temp_list);
		unset($p_hdir);
		unset($p_hitem);
	  }
	  else
	  {
		TrFctMessage(__FILE__, __LINE__, 4, "File position after blocks =".($p_mode=="tar"?ftell($p_tar):gztell($p_tar)));
	  }
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleAddFile()
  // Description :
  // Parameters :
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleAddFile($p_tar, $p_filename, $p_mode, &$p_header, $p_add_dir, $p_remove_dir)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleAddFile", "tar='$p_tar', filename='$p_filename', p_mode='$p_mode', add_dir='$p_add_dir', remove_dir='$p_remove_dir'");
	$v_result=1;

	// ----- Check the parameters
	if ($p_tar == 0)
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid file descriptor in file ".__FILE__.", line ".__LINE__);

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Skip empty file names
	if ($p_filename == "")
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid file list parameter (invalid or empty list)");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Calculate the stored filename
	$v_stored_filename = $p_filename;
	if ($p_remove_dir != "")
	{
	  if (substr($p_remove_dir, -1) != '/')
		$p_remove_dir .= "/";

	  if ((substr($p_filename, 0, 2) == "./") || (substr($p_remove_dir, 0, 2) == "./"))
	  {
		if ((substr($p_filename, 0, 2) == "./") && (substr($p_remove_dir, 0, 2) != "./"))
		  $p_remove_dir = "./".$p_remove_dir;
		if ((substr($p_filename, 0, 2) != "./") && (substr($p_remove_dir, 0, 2) == "./"))
		  $p_remove_dir = substr($p_remove_dir, 2);
	  }

	  if (substr($p_filename, 0, strlen($p_remove_dir)) == $p_remove_dir)
	  {
		$v_stored_filename = substr($p_filename, strlen($p_remove_dir));
		TrFctMessage(__FILE__, __LINE__, 3, "Remove path '$p_remove_dir' in file '$p_filename' = '$v_stored_filename'");
	  }
	}
	if ($p_add_dir != "")
	{
	  if (substr($p_add_dir, -1) == "/")
		$v_stored_filename = $p_add_dir.$v_stored_filename;
	  else
		$v_stored_filename = $p_add_dir."/".$v_stored_filename;
	  TrFctMessage(__FILE__, __LINE__, 3, "Add path '$p_add_dir' in file '$p_filename' = '$v_stored_filename'");
	}

	// ----- Check the path length
	if (strlen($v_stored_filename) > 99)
	{
	  // ----- Error log
	  PclErrorLog(-5, "Stored file name is too long (max. 99) : '$v_stored_filename'");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Look for a file
	if (is_file($p_filename))
	{
	  // ----- Open the source file
	  if (($v_file = fopen($p_filename, "rb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-2, "Unable to open file '$p_filename' in binary read mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Call the header generation
	  if (($v_result = PclTarHandleHeader($p_tar, $p_filename, $p_mode, $p_header, $v_stored_filename)) != 1)
	  {
		// ----- Return status
		TrFctEnd(__FILE__, __LINE__, $v_result);
		return $v_result;
	  }

	  TrFctMessage(__FILE__, __LINE__, 4, "File position after header =".($p_mode=="tar"?ftell($p_tar):gztell($p_tar)));

	  // ----- Read the file by 512 octets blocks
	  $i=0;
	  while (($v_buffer = fread($v_file, 512)) != "")
	  {
		$v_binary_data = pack("a512", "$v_buffer");
		if ($p_mode == "tar")
		  fputs($p_tar, $v_binary_data);
		else
		  gzputs($p_tar, $v_binary_data);
		$i++;
	  }
	  TrFctMessage(__FILE__, __LINE__, 2, "$i 512 bytes blocks");

	  // ----- Close the file
	  fclose($v_file);

	  TrFctMessage(__FILE__, __LINE__, 4, "File position after blocks =".($p_mode=="tar"?ftell($p_tar):gztell($p_tar)));
	}

	// ----- Look for a directory
	else
	{
	  // ----- Call the header generation
	  if (($v_result = PclTarHandleHeader($p_tar, $p_filename, $p_mode, $p_header, $v_stored_filename)) != 1)
	  {
		// ----- Return status
		TrFctEnd(__FILE__, __LINE__, $v_result);
		return $v_result;
	  }

	  TrFctMessage(__FILE__, __LINE__, 4, "File position after header =".($p_mode=="tar"?ftell($p_tar):gztell($p_tar)));
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleHeader()
  // Description :
  //	This function creates in the TAR $p_tar, the TAR header for the file
  //	$p_filename.
  //
  //	1. The informations needed to compose the header are recuperated and formatted
  //	2. Two binary strings are composed for the first part of the header, before
  //	  and after checksum field.
  //	3. The checksum is calculated from the two binary strings
  //	4. The header is write in the tar file (first binary string, binary string
  //	  for checksum and last binary string).
  // Parameters :
  //	$p_tar : a valid file descriptor, opened in write mode,
  //	$p_filename : The name of the file the header is for,
  //	$p_mode : The mode of the archive ("tar" or "tgz").
  //	$p_header : A pointer to a array where will be set the file properties
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleHeader($p_tar, $p_filename, $p_mode, &$p_header, $p_stored_filename)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleHeader", "tar=$p_tar, file='$p_filename', mode='$p_mode', stored_filename='$p_stored_filename'");
	$v_result=1;

	// ----- Check the parameters
	if (($p_tar == 0) || ($p_filename == ""))
	{
	  // ----- Error log
	  PclErrorLog(-3, "Invalid file descriptor in file ".__FILE__.", line ".__LINE__);

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Filename (reduce the path of stored name)
	if ($p_stored_filename == "")
	  $p_stored_filename = $p_filename;
	$v_reduce_filename = PclTarHandlePathReduction($p_stored_filename);
	TrFctMessage(__FILE__, __LINE__, 2, "Filename (reduced) '$v_reduce_filename', strlen ".strlen($v_reduce_filename));

	// ----- Get file info
	$v_info = stat($p_filename);
	$v_uid = sprintf("%6s ", DecOct($v_info[4]));
	$v_gid = sprintf("%6s ", DecOct($v_info[5]));
	TrFctMessage(__FILE__, __LINE__, 3, "uid=$v_uid, gid=$v_gid");
	$v_perms = sprintf("%6s ", DecOct(fileperms($p_filename)));
	TrFctMessage(__FILE__, __LINE__, 3, "file permissions $v_perms");

	// ----- File mtime
	$v_mtime_data = filemtime($p_filename);
	TrFctMessage(__FILE__, __LINE__, 2, "File mtime : $v_mtime_data");
	$v_mtime = sprintf("%11s", DecOct($v_mtime_data));

	// ----- File typeflag
	// '0' or '\0' is the code for regular file
	// '5' is directory
	if (is_dir($p_filename))
	{
	  $v_typeflag = "5";
	  $v_size = 0;
	}
	else
	{
	  $v_typeflag = "";

	  // ----- Get the file size
	  clearstatcache();
	  $v_size = filesize($p_filename);
	}

	TrFctMessage(__FILE__, __LINE__, 2, "File size : $v_size");
	$v_size = sprintf("%11s ", DecOct($v_size));

	TrFctMessage(__FILE__, __LINE__, 2, "File typeflag : $v_typeflag");

	// ----- Linkname
	$v_linkname = "";

	// ----- Magic
	$v_magic = "";

	// ----- Version
	$v_version = "";

	// ----- uname
	$v_uname = "";

	// ----- gname
	$v_gname = "";

	// ----- devmajor
	$v_devmajor = "";

	// ----- devminor
	$v_devminor = "";

	// ----- prefix
	$v_prefix = "";

	// ----- Compose the binary string of the header in two parts arround the checksum position
	$v_binary_data_first = pack("a100a8a8a8a12A12", $v_reduce_filename, $v_perms, $v_uid, $v_gid, $v_size, $v_mtime);
	$v_binary_data_last = pack("a1a100a6a2a32a32a8a8a155a12", $v_typeflag, $v_linkname, $v_magic, $v_version, $v_uname, $v_gname, $v_devmajor, $v_devminor, $v_prefix, "");

	// ----- Calculate the checksum
	$v_checksum = 0;
	// ..... First part of the header
	for ($i=0; $i<148; $i++)
	{
	  $v_checksum += ord(substr($v_binary_data_first,$i,1));
	}
	// ..... Ignore the checksum value and replace it by ' ' (space)
	for ($i=148; $i<156; $i++)
	{
	  $v_checksum += ord(' ');
	}
	// ..... Last part of the header
	for ($i=156, $j=0; $i<512; $i++, $j++)
	{
	  $v_checksum += ord(substr($v_binary_data_last,$j,1));
	}
	TrFctMessage(__FILE__, __LINE__, 3, "Calculated checksum : $v_checksum");

	// ----- Write the first 148 bytes of the header in the archive
	if ($p_mode == "tar")
	  fputs($p_tar, $v_binary_data_first, 148);
	else
	  gzputs($p_tar, $v_binary_data_first, 148);

	// ----- Write the calculated checksum
	$v_checksum = sprintf("%6s ", DecOct($v_checksum));
	$v_binary_data = pack("a8", $v_checksum);
	if ($p_mode == "tar")
	  fputs($p_tar, $v_binary_data, 8);
	else
	  gzputs($p_tar, $v_binary_data, 8);

	// ----- Write the last 356 bytes of the header in the archive
	if ($p_mode == "tar")
	  fputs($p_tar, $v_binary_data_last, 356);
	else
	  gzputs($p_tar, $v_binary_data_last, 356);

	// ----- Set the properties in the header "structure"
	$p_header[filename] = $v_reduce_filename;
	$p_header[mode] = $v_perms;
	$p_header[uid] = $v_uid;
	$p_header[gid] = $v_gid;
	$p_header[size] = $v_size;
	$p_header[mtime] = $v_mtime;
	$p_header[typeflag] = $v_typeflag;
	$p_header[status] = "added";

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleFooter()
  // Description :
  // Parameters :
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleFooter($p_tar, $p_mode)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleFooter", "tar='$p_tar', p_mode=$p_mode");
	$v_result=1;

	// ----- Write the last 0 filled block for end of archive
	$v_binary_data = pack("a512", "");
	if ($p_mode == "tar")
	  fputs($p_tar, $v_binary_data);
	else
	  gzputs($p_tar, $v_binary_data);

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleExtract()
  // Description :
  // Parameters :
  //	$p_tarname : Filename of the tar (or tgz) archive
  //	$p_file_list : An array which contains the list of files to extract, this
  //				  array may be empty when $p_mode is 'complete'
  //	$p_list_detail : An array where will be placed the properties of  each extracted/listed file
  //	$p_mode : 'complete' will extract all files from the archive,
  //			 'partial' will look for files in $p_file_list
  //			 'list' will only list the files from the archive without any extract
  //	$p_path : Path to add while writing the extracted files
  //	$p_tar_mode : 'tar' for GNU TAR archive, 'tgz' for compressed archive
  //	$p_remove_path : Path to remove (from the file memorized path) while writing the
  //					extracted files. If the path does not match the file path,
  //					the file is extracted with its memorized path.
  //					$p_remove_path does not apply to 'list' mode.
  //					$p_path and $p_remove_path are commulative.
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleExtract($p_tarname, $p_file_list, &$p_list_detail, $p_mode, $p_path, $p_tar_mode, $p_remove_path)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleExtract", "archive='$p_tarname', list, mode=$p_mode, path=$p_path, tar_mode=$p_tar_mode, remove_path='$p_remove_path'");
	$v_result=1;
	$v_nb = 0;
	$v_extract_all = TRUE;
	$v_listing = FALSE;

	// ----- Check the path
	/*
	if (($p_path == "") || ((substr($p_path, 0, 1) != "/") && (substr($p_path, 0, 3) != "../")))
	  $p_path = "./".$p_path;
	*/

	$isWin = (substr(PHP_OS, 0, 3) == 'WIN');

	if(!$isWin)
	{
		if (($p_path == "") || ((substr($p_path, 0, 1) != "/") && (substr($p_path, 0, 3) != "../")))
		  $p_path = "./".$p_path;
	}
	// ----- Look for path to remove format (should end by /)
	if (($p_remove_path != "") && (substr($p_remove_path, -1) != '/'))
	{
	  $p_remove_path .= '/';
	}
	$p_remove_path_size = strlen($p_remove_path);

	// ----- Study the mode
	switch ($p_mode) {
	  case "complete" :
		// ----- Flag extract of all files
		$v_extract_all = TRUE;
		$v_listing = FALSE;
	  break;
	  case "partial" :
		  // ----- Flag extract of specific files
		  $v_extract_all = FALSE;
		  $v_listing = FALSE;
	  break;
	  case "list" :
		  // ----- Flag list of all files
		  $v_extract_all = FALSE;
		  $v_listing = TRUE;
	  break;
	  default :
		// ----- Error log
		PclErrorLog(-3, "Invalid extract mode ($p_mode)");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	}

	// ----- Open the tar file
	if ($p_tar_mode == "tar")
	{
	  TrFctMessage(__FILE__, __LINE__, 3, "Open file in binary read mode");
	  $v_tar = fopen($p_tarname, "rb");
	}
	else
	{
	  TrFctMessage(__FILE__, __LINE__, 3, "Open file in gzip binary read mode");
	  $v_tar = @gzopen($p_tarname, "rb");
	}

	// ----- Check that the archive is open
	if ($v_tar == 0)
	{
	  // ----- Error log
	  PclErrorLog(-2, "Unable to open archive '$p_tarname' in binary read mode");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Read the blocks
	While (!($v_end_of_file = ($p_tar_mode == "tar"?feof($v_tar):gzeof($v_tar))))
	{
	  TrFctMessage(__FILE__, __LINE__, 3, "Looking for next header ...");

	  // ----- Clear cache of file infos
	  clearstatcache();

	  // ----- Reset extract tag
	  $v_extract_file = FALSE;
	  $v_extraction_stopped = 0;

	  // ----- Read the 512 bytes header
	  if ($p_tar_mode == "tar")
		$v_binary_data = fread($v_tar, 512);
	  else
		$v_binary_data = gzread($v_tar, 512);

	  // ----- Read the header properties
	  if (($v_result = PclTarHandleReadHeader($v_binary_data, $v_header)) != 1)
	  {
		// ----- Close the archive file
		if ($p_tar_mode == "tar")
		  fclose($v_tar);
		else
		  gzclose($v_tar);

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);
		return $v_result;
	  }

	  // ----- Look for empty blocks to skip
	  if ($v_header["filename"] == "")
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Empty block found. End of archive ?");
		continue;
	  }

	  TrFctMessage(__FILE__, __LINE__, 2, "Found file '" . $v_header["filename"] . "', size '$v_header[size]'");

	  // ----- Look for partial extract
	  if ((!$v_extract_all) && (is_array($p_file_list)))
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Look if the file '$v_header[filename]' need to be extracted");

		// ----- By default no unzip if the file is not found
		$v_extract_file = FALSE;

		// ----- Look into the file list
		for ($i=0; $i<sizeof($p_file_list); $i++)
		{
		  TrFctMessage(__FILE__, __LINE__, 2, "Compare archived file '$v_header[filename]' from asked list file '".$p_file_list[$i]."'");

		  // ----- Look if it is a directory
		  if (substr($p_file_list[$i], -1) == "/")
		  {
			TrFctMessage(__FILE__, __LINE__, 3, "Compare file '$v_header[filename]' with directory '$p_file_list[$i]'");

			// ----- Look if the directory is in the filename path
			if ((strlen($v_header["filename"]) > strlen($p_file_list[$i])) && (substr($v_header["filename"], 0, strlen($p_file_list[$i])) == $p_file_list[$i]))
			{
			  // ----- The file is in the directory, so extract it
			  TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' is in directory '$p_file_list[$i]' : extract it");
			  $v_extract_file = TRUE;

			  // ----- End of loop
			  break;
			}
		  }

		  // ----- It is a file, so compare the file names
		  else if ($p_file_list[$i] == $v_header["filename"])
		  {
			// ----- File found
			TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' should be extracted");
			$v_extract_file = TRUE;

			// ----- End of loop
			break;
		  }
		}

		// ----- Trace
		if (!$v_extract_file)
		{
		  TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' should not be extracted");
		}
	  }
	  else
	  {
		// ----- All files need to be extracted
		$v_extract_file = TRUE;
	  }

	  // ----- Look if this file need to be extracted
	  if (($v_extract_file) && (!$v_listing))
	  {
		// ----- Look for path to remove
		if (($p_remove_path != "")
			&& (substr($v_header["filename"], 0, $p_remove_path_size) == $p_remove_path))
		{
		  TrFctMessage(__FILE__, __LINE__, 3, "Found path '$p_remove_path' to remove in file '$v_header[filename]'");
		  // ----- Remove the path
		  $v_header["filename"] = substr($v_header["filename"], $p_remove_path_size);
		  TrFctMessage(__FILE__, __LINE__, 3, "Reslting file is '$v_header[filename]'");
		}

		// ----- Add the path to the file
		if (($p_path != "./") && ($p_path != "/"))
		{
		  // ----- Look for the path end '/'
		  while (substr($p_path, -1) == "/")
		  {
			TrFctMessage(__FILE__, __LINE__, 3, "Destination path [$p_path] ends by '/'");
			$p_path = substr($p_path, 0, strlen($p_path)-1);
			TrFctMessage(__FILE__, __LINE__, 3, "Modified to [$p_path]");
		  }

		  // ----- Add the path
		  if (substr($v_header["filename"], 0, 1) == "/")
			  $v_header["filename"] = $p_path.$v_header["filename"];
		  else
			$v_header["filename"] = $p_path."/".$v_header["filename"];
		}

		// ----- Trace
		TrFctMessage(__FILE__, __LINE__, 2, "Extracting file (with path) '$v_header[filename]', size '$v_header[size]'");

		// ----- Check that the file does not exists
		if (file_exists($v_header["filename"]))
		{
		  TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' already exists");

		  // ----- Look if file is a directory
		  if (is_dir($v_header["filename"]))
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is a directory");

			// ----- Change the file status
			$v_header["status"] = "already_a_directory";

			// ----- Skip the extract
			$v_extraction_stopped = 1;
			$v_extract_file = 0;
		  }
		  // ----- Look if file is write protected
		  else if (!is_writeable($v_header["filename"]))
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is write protected");

			// ----- Change the file status
			$v_header["status"] = "write_protected";

			// ----- Skip the extract
			$v_extraction_stopped = 1;
			$v_extract_file = 0;
		  }
		  // ----- Look if the extracted file is older
		  else if (filemtime($v_header["filename"]) > $v_header["mtime"])
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is newer (".date("l dS of F Y h:i:s A", filemtime($v_header[filename])).") than the extracted file (".date("l dS of F Y h:i:s A", $v_header[mtime]).")");

			// ----- Change the file status
			$v_header["status"] = "newer_exist";

			// ----- Skip the extract
			$v_extraction_stopped = 1;
			$v_extract_file = 0;
		  }
		}

		// ----- Check the directory availability and create it if necessary
		else
		{
		  if ($v_header["typeflag"]=="5")
			$v_dir_to_check = $v_header["filename"];
		  else if (!strstr($v_header["filename"], "/"))
			$v_dir_to_check = "";
		  else
			$v_dir_to_check = dirname($v_header["filename"]);

		  if (($v_result = PclTarHandlerDirCheck($v_dir_to_check)) != 1)
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Unable to create path for '$v_header[filename]'");

			// ----- Change the file status
			$v_header["status"] = "path_creation_fail";

			// ----- Skip the extract
			$v_extraction_stopped = 1;
			$v_extract_file = 0;
		  }
		}

		// ----- Do the extraction
		if (($v_extract_file) && ($v_header["typeflag"]!="5"))
		{
		  // ----- Open the destination file in write mode
		  if (($v_dest_file = @fopen($v_header["filename"], "wb")) == 0)
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Error while opening '$v_header[filename]' in write binary mode");

			// ----- Change the file status
			$v_header["status"] = "write_error";

			// ----- Jump to next file
			TrFctMessage(__FILE__, __LINE__, 2, "Jump to next file");
			if ($p_tar_mode == "tar")
			  fseek($v_tar, ftell($v_tar)+(ceil(($v_header[size]/512))*512));
			else
			  gzseek($v_tar, gztell($v_tar)+(ceil(($v_header[size]/512))*512));
		  }
		  else
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Start extraction of '$v_header[filename]'");

			// ----- Read data
			$n = floor($v_header["size"]/512);
			for ($i=0; $i<$n; $i++)
			{
			  TrFctMessage(__FILE__, __LINE__, 3, "Read complete 512 bytes block number ".($i+1));
			  if ($p_tar_mode == "tar")
				$v_content = fread($v_tar, 512);
			  else
				$v_content = gzread($v_tar, 512);
			  fwrite($v_dest_file, $v_content, 512);
			}
			if (($v_header["size"] % 512) != 0)
			{
			  TrFctMessage(__FILE__, __LINE__, 3, "Read last ".($v_header["size"] % 512)." bytes in a 512 block");
			  if ($p_tar_mode == "tar")
				$v_content = fread($v_tar, 512);
			  else
				$v_content = gzread($v_tar, 512);
			  fwrite($v_dest_file, $v_content, ($v_header["size"] % 512));
			}

			// ----- Close the destination file
			fclose($v_dest_file);

			// ----- Change the file mode, mtime
			touch($v_header["filename"], $v_header["mtime"]);
			//chmod($v_header[filename], DecOct($v_header[mode]));
		  }

		  // ----- Check the file size
		  clearstatcache();
		  if (filesize($v_header["filename"]) != $v_header["size"])
		  {
			// ----- Close the archive file
			if ($p_tar_mode == "tar")
			  fclose($v_tar);
			else
			  gzclose($v_tar);

			// ----- Error log
			PclErrorLog(-7, "Extracted file '$v_header[filename]' does not have the correct file size '".filesize($v_filename)."' ('$v_header[size]' expected). Archive may be corrupted.");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
			return PclErrorCode();
		  }

		  // ----- Trace
		  TrFctMessage(__FILE__, __LINE__, 2, "Extraction done");
		}

		else
		{
		  TrFctMessage(__FILE__, __LINE__, 2, "Extraction of file '$v_header[filename]' skipped.");

		  // ----- Jump to next file
		  TrFctMessage(__FILE__, __LINE__, 2, "Jump to next file");
		  if ($p_tar_mode == "tar")
			fseek($v_tar, ftell($v_tar)+(ceil(($v_header["size"]/512))*512));
		  else
			gzseek($v_tar, gztell($v_tar)+(ceil(($v_header["size"]/512))*512));
		}
	  }

	  // ----- Look for file that is not to be unzipped
	  else
	  {
		// ----- Trace
		TrFctMessage(__FILE__, __LINE__, 2, "Jump file '$v_header[filename]'");
		TrFctMessage(__FILE__, __LINE__, 4, "Position avant jump [".($p_tar_mode=="tar"?ftell($v_tar):gztell($v_tar))."]");

		// ----- Jump to next file
		if ($p_tar_mode == "tar")
		  fseek($v_tar, ($p_tar_mode=="tar"?ftell($v_tar):gztell($v_tar))+(ceil(($v_header[size]/512))*512));
		else
		  gzseek($v_tar, gztell($v_tar)+(ceil(($v_header[size]/512))*512));

		TrFctMessage(__FILE__, __LINE__, 4, "Position apr�s jump [".($p_tar_mode=="tar"?ftell($v_tar):gztell($v_tar))."]");
	  }

	  if ($p_tar_mode == "tar")
		$v_end_of_file = feof($v_tar);
	  else
		$v_end_of_file = gzeof($v_tar);

	  // ----- File name and properties are logged if listing mode or file is extracted
	  if ($v_listing || $v_extract_file || $v_extraction_stopped)
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Memorize info about file '$v_header[filename]'");

		// ----- Log extracted files
		if (($v_file_dir = dirname($v_header["filename"])) == $v_header["filename"])
		  $v_file_dir = "";
		if ((substr($v_header["filename"], 0, 1) == "/") && ($v_file_dir == ""))
		  $v_file_dir = "/";

		// ----- Add the array describing the file into the list
		$p_list_detail[$v_nb] = $v_header;

		// ----- Increment
		$v_nb++;
	  }
	}

	// ----- Close the tarfile
	if ($p_tar_mode == "tar")
	  fclose($v_tar);
	else
	  gzclose($v_tar);

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleExtractByIndexList()
  // Description :
  //	Extract the files which are at the indexes specified. If the 'file' at the
  //	index is a directory, the directory only is created, not all the files stored
  //	for that directory.
  // Parameters :
  //	$p_index_string : String of indexes of files to extract. The form of the
  //					 string is "0,4-6,8-12" with only numbers and '-' for
  //					 for range, and ',' to separate ranges. No spaces or ';'
  //					 are allowed.
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleExtractByIndexList($p_tarname, $p_index_string, &$p_list_detail, $p_path, $p_remove_path, $p_tar_mode)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleExtractByIndexList", "archive='$p_tarname', index_string='$p_index_string', list, path=$p_path, remove_path='$p_remove_path', tar_mode=$p_tar_mode");
	$v_result=1;
	$v_nb = 0;

	// ----- TBC : I should check the string by a regexp

	// ----- Check the path
	if (($p_path == "") || ((substr($p_path, 0, 1) != "/") && (substr($p_path, 0, 3) != "../") && (substr($p_path, 0, 2) != "./")))
	  $p_path = "./".$p_path;

	// ----- Look for path to remove format (should end by /)
	if (($p_remove_path != "") && (substr($p_remove_path, -1) != '/'))
	{
	  $p_remove_path .= '/';
	}
	$p_remove_path_size = strlen($p_remove_path);

	// ----- Open the tar file
	if ($p_tar_mode == "tar")
	{
	  TrFctMessage(__FILE__, __LINE__, 3, "Open file in binary read mode");
	  $v_tar = @fopen($p_tarname, "rb");
	}
	else
	{
	  TrFctMessage(__FILE__, __LINE__, 3, "Open file in gzip binary read mode");
	  $v_tar = @gzopen($p_tarname, "rb");
	}

	// ----- Check that the archive is open
	if ($v_tar == 0)
	{
	  // ----- Error log
	  PclErrorLog(-2, "Unable to open archive '$p_tarname' in binary read mode");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Manipulate the index list
	$v_list = explode(",", $p_index_string);
	sort($v_list);

	// ----- Loop on the index list
	$v_index=0;
	for ($i=0; ($i<sizeof($v_list)) && ($v_result); $i++)
	{
	  TrFctMessage(__FILE__, __LINE__, 3, "Looking for index part '$v_list[$i]'");

	  // ----- Extract range
	  $v_index_list = explode("-", $v_list[$i]);
	  $v_size_index_list = sizeof($v_index_list);
	  if ($v_size_index_list == 1)
	  {
		TrFctMessage(__FILE__, __LINE__, 3, "Only one index '$v_index_list[0]'");

		// ----- Do the extraction
		$v_result = PclTarHandleExtractByIndex($v_tar, $v_index, $v_index_list[0], $v_index_list[0], $p_list_detail, $p_path, $p_remove_path, $p_tar_mode);
	  }
	  else if ($v_size_index_list == 2)
	  {
		TrFctMessage(__FILE__, __LINE__, 3, "Two indexes '$v_index_list[0]' and '$v_index_list[1]'");

		// ----- Do the extraction
		$v_result = PclTarHandleExtractByIndex($v_tar, $v_index, $v_index_list[0], $v_index_list[1], $p_list_detail, $p_path, $p_remove_path, $p_tar_mode);
	  }
	}

	// ----- Close the tarfile
	if ($p_tar_mode == "tar")
	  fclose($v_tar);
	else
	  gzclose($v_tar);

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleExtractByIndex()
  // Description :
  // Parameters :
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleExtractByIndex($p_tar, &$p_index_current, $p_index_start, $p_index_stop, &$p_list_detail, $p_path, $p_remove_path, $p_tar_mode)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleExtractByIndex", "archive_descr='$p_tar', index_current=$p_index_current, index_start='$p_index_start', index_stop='$p_index_stop', list, path=$p_path, remove_path='$p_remove_path', tar_mode=$p_tar_mode");
	$v_result=1;
	$v_nb = 0;

	// TBC : I should replace all $v_tar by $p_tar in this function ....
	$v_tar = $p_tar;

	// ----- Look the number of elements already in $p_list_detail
	$v_nb = sizeof($p_list_detail);

	// ----- Read the blocks
	While (!($v_end_of_file = ($p_tar_mode == "tar"?feof($v_tar):gzeof($v_tar))))
	{
	  TrFctMessage(__FILE__, __LINE__, 3, "Looking for next file ...");
	  TrFctMessage(__FILE__, __LINE__, 3, "Index current=$p_index_current, range=[$p_index_start, $p_index_stop])");

	  if ($p_index_current > $p_index_stop)
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Stop extraction, past stop index");
		break;
	  }

	  // ----- Clear cache of file infos
	  clearstatcache();

	  // ----- Reset extract tag
	  $v_extract_file = FALSE;
	  $v_extraction_stopped = 0;

	  // ----- Read the 512 bytes header
	  if ($p_tar_mode == "tar")
		$v_binary_data = fread($v_tar, 512);
	  else
		$v_binary_data = gzread($v_tar, 512);

	  // ----- Read the header properties
	  if (($v_result = PclTarHandleReadHeader($v_binary_data, $v_header)) != 1)
	  {
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);
		return $v_result;
	  }

	  // ----- Look for empty blocks to skip
	  if ($v_header[filename] == "")
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Empty block found. End of archive ?");
		continue;
	  }

	  TrFctMessage(__FILE__, __LINE__, 2, "Found file '$v_header[filename]', size '$v_header[size]'");

	  // ----- Look if file is in the range to be extracted
	  if (($p_index_current >= $p_index_start) && ($p_index_current <= $p_index_stop))
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' is in the range to be extracted");
		$v_extract_file = TRUE;
	  }
	  else
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' is out of the range");
		$v_extract_file = FALSE;
	  }

	  // ----- Look if this file need to be extracted
	  if ($v_extract_file)
	  {
		if (($v_result = PclTarHandleExtractFile($v_tar, $v_header, $p_path, $p_remove_path, $p_tar_mode)) != 1)
		{
		  // ----- Return
		  TrFctEnd(__FILE__, __LINE__, $v_result);
		  return $v_result;
		}
	  }

	  // ----- Look for file that is not to be extracted
	  else
	  {
		// ----- Trace
		TrFctMessage(__FILE__, __LINE__, 2, "Jump file '$v_header[filename]'");
		TrFctMessage(__FILE__, __LINE__, 4, "Position avant jump [".($p_tar_mode=="tar"?ftell($v_tar):gztell($v_tar))."]");

		// ----- Jump to next file
		if ($p_tar_mode == "tar")
		  fseek($v_tar, ($p_tar_mode=="tar"?ftell($v_tar):gztell($v_tar))+(ceil(($v_header[size]/512))*512));
		else
		  gzseek($v_tar, gztell($v_tar)+(ceil(($v_header[size]/512))*512));

		TrFctMessage(__FILE__, __LINE__, 4, "Position apr�s jump [".($p_tar_mode=="tar"?ftell($v_tar):gztell($v_tar))."]");
	  }

	  if ($p_tar_mode == "tar")
		$v_end_of_file = feof($v_tar);
	  else
		$v_end_of_file = gzeof($v_tar);

	  // ----- File name and properties are logged if listing mode or file is extracted
	  if ($v_extract_file)
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Memorize info about file '$v_header[filename]'");

		// ----- Log extracted files
		if (($v_file_dir = dirname($v_header[filename])) == $v_header[filename])
		  $v_file_dir = "";
		if ((substr($v_header[filename], 0, 1) == "/") && ($v_file_dir == ""))
		  $v_file_dir = "/";

		// ----- Add the array describing the file into the list
		$p_list_detail[$v_nb] = $v_header;

		// ----- Increment
		$v_nb++;
	  }

	  // ----- Increment the current file index
	  $p_index_current++;
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleExtractFile()
  // Description :
  // Parameters :
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleExtractFile($p_tar, &$v_header, $p_path, $p_remove_path, $p_tar_mode)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleExtractFile", "archive_descr='$p_tar', path=$p_path, remove_path='$p_remove_path', tar_mode=$p_tar_mode");
	$v_result=1;

	// TBC : I should replace all $v_tar by $p_tar in this function ....
	$v_tar = $p_tar;
	$v_extract_file = 1;

	$p_remove_path_size = strlen($p_remove_path);

		// ----- Look for path to remove
		if (($p_remove_path != "")
			&& (substr($v_header[filename], 0, $p_remove_path_size) == $p_remove_path))
		{
		  TrFctMessage(__FILE__, __LINE__, 3, "Found path '$p_remove_path' to remove in file '$v_header[filename]'");
		  // ----- Remove the path
		  $v_header[filename] = substr($v_header[filename], $p_remove_path_size);
		  TrFctMessage(__FILE__, __LINE__, 3, "Resulting file is '$v_header[filename]'");
		}

		// ----- Add the path to the file
		if (($p_path != "./") && ($p_path != "/"))
		{
		  // ----- Look for the path end '/'
		  while (substr($p_path, -1) == "/")
		  {
			TrFctMessage(__FILE__, __LINE__, 3, "Destination path [$p_path] ends by '/'");
			$p_path = substr($p_path, 0, strlen($p_path)-1);
			TrFctMessage(__FILE__, __LINE__, 3, "Modified to [$p_path]");
		  }

		  // ----- Add the path
		  if (substr($v_header[filename], 0, 1) == "/")
			  $v_header[filename] = $p_path.$v_header[filename];
		  else
			$v_header[filename] = $p_path."/".$v_header[filename];
		}

		// ----- Trace
		TrFctMessage(__FILE__, __LINE__, 2, "Extracting file (with path) '$v_header[filename]', size '$v_header[size]'");

		// ----- Check that the file does not exists
		if (file_exists($v_header[filename]))
		{
		  TrFctMessage(__FILE__, __LINE__, 2, "File '$v_header[filename]' already exists");

		  // ----- Look if file is a directory
		  if (is_dir($v_header[filename]))
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is a directory");

			// ----- Change the file status
			$v_header[status] = "already_a_directory";

			// ----- Skip the extract
			$v_extraction_stopped = 1;
			$v_extract_file = 0;
		  }
		  // ----- Look if file is write protected
		  else if (!is_writeable($v_header[filename]))
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is write protected");

			// ----- Change the file status
			$v_header[status] = "write_protected";

			// ----- Skip the extract
			$v_extraction_stopped = 1;
			$v_extract_file = 0;
		  }
		  // ----- Look if the extracted file is older
		  else if (filemtime($v_header[filename]) > $v_header[mtime])
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Existing file '$v_header[filename]' is newer (".date("l dS of F Y h:i:s A", filemtime($v_header[filename])).") than the extracted file (".date("l dS of F Y h:i:s A", $v_header[mtime]).")");

			// ----- Change the file status
			$v_header[status] = "newer_exist";

			// ----- Skip the extract
			$v_extraction_stopped = 1;
			$v_extract_file = 0;
		  }
		}

		// ----- Check the directory availability and create it if necessary
		else
		{
		  if ($v_header[typeflag]=="5")
			$v_dir_to_check = $v_header[filename];
		  else if (!strstr($v_header[filename], "/"))
			$v_dir_to_check = "";
		  else
			$v_dir_to_check = dirname($v_header[filename]);

		  if (($v_result = PclTarHandlerDirCheck($v_dir_to_check)) != 1)
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Unable to create path for '$v_header[filename]'");

			// ----- Change the file status
			$v_header[status] = "path_creation_fail";

			// ----- Skip the extract
			$v_extraction_stopped = 1;
			$v_extract_file = 0;
		  }
		}

		// ----- Do the real bytes extraction (if not a directory)
		if (($v_extract_file) && ($v_header[typeflag]!="5"))
		{
		  // ----- Open the destination file in write mode
		  if (($v_dest_file = @fopen($v_header[filename], "wb")) == 0)
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Error while opening '$v_header[filename]' in write binary mode");

			// ----- Change the file status
			$v_header[status] = "write_error";

			// ----- Jump to next file
			TrFctMessage(__FILE__, __LINE__, 2, "Jump to next file");
			if ($p_tar_mode == "tar")
			  fseek($v_tar, ftell($v_tar)+(ceil(($v_header[size]/512))*512));
			else
			  gzseek($v_tar, gztell($v_tar)+(ceil(($v_header[size]/512))*512));
		  }
		  else
		  {
			TrFctMessage(__FILE__, __LINE__, 2, "Start extraction of '$v_header[filename]'");

			// ----- Read data
			$n = floor($v_header[size]/512);
			for ($i=0; $i<$n; $i++)
			{
			  TrFctMessage(__FILE__, __LINE__, 3, "Read complete 512 bytes block number ".($i+1));
			  if ($p_tar_mode == "tar")
				$v_content = fread($v_tar, 512);
			  else
				$v_content = gzread($v_tar, 512);
			  fwrite($v_dest_file, $v_content, 512);
			}
			if (($v_header[size] % 512) != 0)
			{
			  TrFctMessage(__FILE__, __LINE__, 3, "Read last ".($v_header[size] % 512)." bytes in a 512 block");
			  if ($p_tar_mode == "tar")
				$v_content = fread($v_tar, 512);
			  else
				$v_content = gzread($v_tar, 512);
			  fwrite($v_dest_file, $v_content, ($v_header[size] % 512));
			}

			// ----- Close the destination file
			fclose($v_dest_file);

			// ----- Change the file mode, mtime
			touch($v_header[filename], $v_header[mtime]);
			//chmod($v_header[filename], DecOct($v_header[mode]));
		  }

		  // ----- Check the file size
		  clearstatcache();
		  if (filesize($v_header[filename]) != $v_header[size])
		  {
			// ----- Error log
			PclErrorLog(-7, "Extracted file '$v_header[filename]' does not have the correct file size '".filesize($v_filename)."' ('$v_header[size]' expected). Archive may be corrupted.");

			// ----- Return
			TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
			return PclErrorCode();
		  }

		  // ----- Trace
		  TrFctMessage(__FILE__, __LINE__, 2, "Extraction done");
		}
		else
		{
		  TrFctMessage(__FILE__, __LINE__, 2, "Extraction of file '$v_header[filename]' skipped.");

		  // ----- Jump to next file
		  TrFctMessage(__FILE__, __LINE__, 2, "Jump to next file");
		  if ($p_tar_mode == "tar")
			fseek($v_tar, ftell($v_tar)+(ceil(($v_header[size]/512))*512));
		  else
			gzseek($v_tar, gztell($v_tar)+(ceil(($v_header[size]/512))*512));
		}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleDelete()
  // Description :
  // Parameters :
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleDelete($p_tarname, $p_file_list, &$p_list_detail, $p_tar_mode)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleDelete", "archive='$p_tarname', list, tar_mode=$p_tar_mode");
	$v_result=1;
	$v_nb=0;

	// ----- Look for regular tar file
	if ($p_tar_mode == "tar")
	{
	  // ----- Open file
	  TrFctMessage(__FILE__, __LINE__, 3, "Open file in binary read mode");
	  if (($v_tar = @fopen($p_tarname, "rb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Open a temporary file in write mode
	  $v_temp_tarname = uniqid("pcltar-").".tmp";
	  TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
	  if (($v_temp_tar = @fopen($v_temp_tarname, "wb")) == 0)
	  {
		// ----- Close tar file
		fclose($v_tar);

		// ----- Error log
		PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }
	}

	// ----- Look for compressed tar file
	else
	{
	  // ----- Open the file in read mode
	  TrFctMessage(__FILE__, __LINE__, 3, "Open file in gzip binary read mode");
	  if (($v_tar = @gzopen($p_tarname, "rb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Open a temporary file in write mode
	  $v_temp_tarname = uniqid("pcltar-").".tmp";
	  TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
	  if (($v_temp_tar = @gzopen($v_temp_tarname, "wb")) == 0)
	  {
		// ----- Close tar file
		gzclose($v_tar);

		// ----- Error log
		PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }
	}

	// ----- Read the blocks
	While (!($v_end_of_file = ($p_tar_mode == "tar"?feof($v_tar):gzeof($v_tar))))
	{
	  TrFctMessage(__FILE__, __LINE__, 3, "Looking for next header ...");

	  // ----- Clear cache of file infos
	  clearstatcache();

	  // ----- Reset delete tag
	  $v_delete_file = FALSE;

	  // ----- Read the first 512 block header
	  if ($p_tar_mode == "tar")
		$v_binary_data = fread($v_tar, 512);
	  else
		$v_binary_data = gzread($v_tar, 512);

	  // ----- Read the header properties
	  if (($v_result = PclTarHandleReadHeader($v_binary_data, $v_header)) != 1)
	  {
		// ----- Close the archive file
		if ($p_tar_mode == "tar")
		{
		  fclose($v_tar);
		  fclose($v_temp_tar);
		}
		else
		{
		  gzclose($v_tar);
		  gzclose($v_temp_tar);
		}
		@unlink($v_temp_tarname);

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);
		return $v_result;
	  }

	  // ----- Look for empty blocks to skip
	  if ($v_header[filename] == "")
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Empty block found. End of archive ?");
		continue;
	  }

	  TrFctMessage(__FILE__, __LINE__, 2, "Found file '$v_header[filename]', size '$v_header[size]'");

	  // ----- Look for filenames to delete
	  for ($i=0, $v_delete_file=FALSE; ($i<sizeof($p_file_list)) && (!$v_delete_file); $i++)
	  {
		// ----- Compare the file names
//		if ($p_file_list[$i] == $v_header[filename])
		if (($v_len = strcmp($p_file_list[$i], $v_header[filename])) <= 0)
		{
		  if ($v_len==0)
		  {
			TrFctMessage(__FILE__, __LINE__, 3, "Found that '$v_header[filename]' need to be deleted");
			$v_delete_file = TRUE;
		  }
		  else
		  {
			TrFctMessage(__FILE__, __LINE__, 3, "Look if '$v_header[filename]' is a file in $p_file_list[$i]");
			if (substr($v_header[filename], strlen($p_file_list[$i]), 1) == "/")
			{
			  TrFctMessage(__FILE__, __LINE__, 3, "'$v_header[filename]' is a file in $p_file_list[$i]");
			  $v_delete_file = TRUE;
			}
		  }
		}
	  }

	  // ----- Copy files that do not need to be deleted
	  if (!$v_delete_file)
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Keep file '$v_header[filename]'");

		// ----- Write the file header
		if ($p_tar_mode == "tar")
		{
		  fputs($v_temp_tar, $v_binary_data, 512);
		}
		else
		{
		  gzputs($v_temp_tar, $v_binary_data, 512);
		}

		// ----- Write the file data
		$n = ceil($v_header[size]/512);
		for ($i=0; $i<$n; $i++)
		{
		  TrFctMessage(__FILE__, __LINE__, 3, "Read complete 512 bytes block number ".($i+1));
		  if ($p_tar_mode == "tar")
		  {
			$v_content = fread($v_tar, 512);
			fwrite($v_temp_tar, $v_content, 512);
		  }
		  else
		  {
			$v_content = gzread($v_tar, 512);
			gzwrite($v_temp_tar, $v_content, 512);
		  }
		}

		// ----- File name and properties are logged if listing mode or file is extracted
		TrFctMessage(__FILE__, __LINE__, 2, "Memorize info about file '$v_header[filename]'");

		// ----- Add the array describing the file into the list
		$p_list_detail[$v_nb] = $v_header;
		$p_list_detail[$v_nb][status] = "ok";

		// ----- Increment
		$v_nb++;
	  }

	  // ----- Look for file that is to be deleted
	  else
	  {
		// ----- Trace
		TrFctMessage(__FILE__, __LINE__, 2, "Start deletion of '$v_header[filename]'");
		TrFctMessage(__FILE__, __LINE__, 4, "Position avant jump [".($p_tar_mode=="tar"?ftell($v_tar):gztell($v_tar))."]");

		// ----- Jump to next file
		if ($p_tar_mode == "tar")
		  fseek($v_tar, ftell($v_tar)+(ceil(($v_header[size]/512))*512));
		else
		  gzseek($v_tar, gztell($v_tar)+(ceil(($v_header[size]/512))*512));

		TrFctMessage(__FILE__, __LINE__, 4, "Position apr�s jump [".($p_tar_mode=="tar"?ftell($v_tar):gztell($v_tar))."]");
	  }

	  // ----- Look for end of file
	  if ($p_tar_mode == "tar")
		$v_end_of_file = feof($v_tar);
	  else
		$v_end_of_file = gzeof($v_tar);
	}

	// ----- Write the last empty buffer
	PclTarHandleFooter($v_temp_tar, $p_tar_mode);

	// ----- Close the tarfile
	if ($p_tar_mode == "tar")
	{
	  fclose($v_tar);
	  fclose($v_temp_tar);
	}
	else
	{
	  gzclose($v_tar);
	  gzclose($v_temp_tar);
	}

	// ----- Unlink tar file
	if (!@unlink($p_tarname))
	{
	  // ----- Error log
	  PclErrorLog(-11, "Error while deleting archive name $p_tarname");
	}


	// ----- Rename tar file
	if (!@rename($v_temp_tarname, $p_tarname))
	{
	  // ----- Error log
	  PclErrorLog(-12, "Error while renaming temporary file $v_temp_tarname to archive name $p_tarname");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleUpdate()
  // Description :
  // Parameters :
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleUpdate($p_tarname, $p_file_list, &$p_list_detail, $p_tar_mode, $p_add_dir, $p_remove_dir)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleUpdate", "archive='$p_tarname', list, tar_mode=$p_tar_mode");
	$v_result=1;
	$v_nb=0;
	$v_found_list = array();

	// ----- Look for regular tar file
	if ($p_tar_mode == "tar")
	{
	  // ----- Open file
	  TrFctMessage(__FILE__, __LINE__, 3, "Open file in binary read mode");
	  if (($v_tar = @fopen($p_tarname, "rb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Open a temporary file in write mode
	  $v_temp_tarname = uniqid("pcltar-").".tmp";
	  TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
	  if (($v_temp_tar = @fopen($v_temp_tarname, "wb")) == 0)
	  {
		// ----- Close tar file
		fclose($v_tar);

		// ----- Error log
		PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }
	}

	// ----- Look for compressed tar file
	else
	{
	  // ----- Open the file in read mode
	  TrFctMessage(__FILE__, __LINE__, 3, "Open file in gzip binary read mode");
	  if (($v_tar = @gzopen($p_tarname, "rb")) == 0)
	  {
		// ----- Error log
		PclErrorLog(-2, "Unable to open file '$p_tarname' in binary read mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }

	  // ----- Open a temporary file in write mode
	  $v_temp_tarname = uniqid("pcltar-").".tmp";
	  TrFctMessage(__FILE__, __LINE__, 2, "Creating temporary archive file $v_temp_tarname");
	  if (($v_temp_tar = @gzopen($v_temp_tarname, "wb")) == 0)
	  {
		// ----- Close tar file
		gzclose($v_tar);

		// ----- Error log
		PclErrorLog(-1, "Unable to open file '$v_temp_tarname' in binary write mode");

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
		return PclErrorCode();
	  }
	}

	// ----- Prepare the list of files
	for ($i=0; $i<sizeof($p_file_list); $i++)
	{
	  // ----- Reset the found list
	  $v_found_list[$i] = 0;

	// ----- Calculate the stored filename
	$v_stored_list[$i] = $p_file_list[$i];
	if ($p_remove_dir != "")
	{
	  if (substr($p_file_list[$i], -1) != '/')
		$p_remove_dir .= "/";

	  if (substr($p_file_list[$i], 0, strlen($p_remove_dir)) == $p_remove_dir)
	  {
		$v_stored_list[$i] = substr($p_file_list[$i], strlen($p_remove_dir));
		TrFctMessage(__FILE__, __LINE__, 3, "Remove path '$p_remove_dir' in file '$p_file_list[$i]' = '$v_stored_list[$i]'");
	  }
	}
	if ($p_add_dir != "")
	{
	  if (substr($p_add_dir, -1) == "/")
		$v_stored_list[$i] = $p_add_dir.$v_stored_list[$i];
	  else
		$v_stored_list[$i] = $p_add_dir."/".$v_stored_list[$i];
	  TrFctMessage(__FILE__, __LINE__, 3, "Add path '$p_add_dir' in file '$p_file_list[$i]' = '$v_stored_list[$i]'");
	}
	$v_stored_list[$i] = PclTarHandlePathReduction($v_stored_list[$i]);
	  TrFctMessage(__FILE__, __LINE__, 3, "After reduction '$v_stored_list[$i]'");
	}


	// ----- Update file cache
	clearstatcache();

	// ----- Read the blocks
	While (!($v_end_of_file = ($p_tar_mode == "tar"?feof($v_tar):gzeof($v_tar))))
	{
	  TrFctMessage(__FILE__, __LINE__, 3, "Looking for next header ...");

	  // ----- Clear cache of file infos
	  clearstatcache();

	  // ----- Reset current found filename
	  $v_current_filename = "";

	  // ----- Reset delete tag
	  $v_delete_file = FALSE;

	  // ----- Read the first 512 block header
	  if ($p_tar_mode == "tar")
		$v_binary_data = fread($v_tar, 512);
	  else
		$v_binary_data = gzread($v_tar, 512);

	  // ----- Read the header properties
	  if (($v_result = PclTarHandleReadHeader($v_binary_data, $v_header)) != 1)
	  {
		// ----- Close the archive file
		if ($p_tar_mode == "tar")
		{
		  fclose($v_tar);
		  fclose($v_temp_tar);
		}
		else
		{
		  gzclose($v_tar);
		  gzclose($v_temp_tar);
		}
		@unlink($v_temp_tarname);

		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result);
		return $v_result;
	  }

	  // ----- Look for empty blocks to skip
	  if ($v_header[filename] == "")
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Empty block found. End of archive ?");
		continue;
	  }

	  TrFctMessage(__FILE__, __LINE__, 2, "Found file '$v_header[filename]', size '$v_header[size]'");

	  // ----- Look for filenames to update
	  for ($i=0, $v_update_file=FALSE, $v_found_file=FALSE; ($i<sizeof($v_stored_list)) && (!$v_update_file); $i++)
	  {
		TrFctMessage(__FILE__, __LINE__, 4, "Compare with file '$v_stored_list[$i]'");

		// ----- Compare the file names
		if ($v_stored_list[$i] == $v_header[filename])
		{
		  TrFctMessage(__FILE__, __LINE__, 3, "File '$v_stored_list[$i]' is present in archive");
		  TrFctMessage(__FILE__, __LINE__, 3, "File '$v_stored_list[$i]' mtime=".filemtime($p_file_list[$i])." ".date("l dS of F Y h:i:s A", filemtime($p_file_list[$i])));
		  TrFctMessage(__FILE__, __LINE__, 3, "Archived mtime=".$v_header[mtime]." ".date("l dS of F Y h:i:s A", $v_header[mtime]));

		  // ----- Store found informations
		  $v_found_file = TRUE;
		  $v_current_filename = $p_file_list[$i];

		  // ----- Look if the file need to be updated
		  if (filemtime($p_file_list[$i]) > $v_header[mtime])
		  {
			TrFctMessage(__FILE__, __LINE__, 3, "File '$p_file_list[$i]' need to be updated");
			$v_update_file = TRUE;
		  }
		  else
		  {
			TrFctMessage(__FILE__, __LINE__, 3, "File '$p_file_list[$i]' does not need to be updated");
			$v_update_file = FALSE;
		  }

		  // ----- Flag the name in order not to add the file at the end
		  $v_found_list[$i] = 1;
		}
		else
		{
		  TrFctMessage(__FILE__, __LINE__, 4, "File '$p_file_list[$i]' is not '$v_header[filename]'");
		}
	  }

	  // ----- Copy files that do not need to be updated
	  if (!$v_update_file)
	  {
		TrFctMessage(__FILE__, __LINE__, 2, "Keep file '$v_header[filename]'");

		// ----- Write the file header
		if ($p_tar_mode == "tar")
		{
		  fputs($v_temp_tar, $v_binary_data, 512);
		}
		else
		{
		  gzputs($v_temp_tar, $v_binary_data, 512);
		}

		// ----- Write the file data
		$n = ceil($v_header[size]/512);
		for ($j=0; $j<$n; $j++)
		{
		  TrFctMessage(__FILE__, __LINE__, 3, "Read complete 512 bytes block number ".($j+1));
		  if ($p_tar_mode == "tar")
		  {
			$v_content = fread($v_tar, 512);
			fwrite($v_temp_tar, $v_content, 512);
		  }
		  else
		  {
			$v_content = gzread($v_tar, 512);
			gzwrite($v_temp_tar, $v_content, 512);
		  }
		}

		// ----- File name and properties are logged if listing mode or file is extracted
		TrFctMessage(__FILE__, __LINE__, 2, "Memorize info about file '$v_header[filename]'");

		// ----- Add the array describing the file into the list
		$p_list_detail[$v_nb] = $v_header;
		$p_list_detail[$v_nb][status] = ($v_found_file?"not_updated":"ok");

		// ----- Increment
		$v_nb++;
	  }

	  // ----- Look for file that need to be updated
	  else
	  {
		// ----- Trace
		TrFctMessage(__FILE__, __LINE__, 2, "Start update of file '$v_current_filename'");

		// ----- Store the old file size
		$v_old_size = $v_header[size];

		// ----- Add the file
		if (($v_result = PclTarHandleAddFile($v_temp_tar, $v_current_filename, $p_tar_mode, $v_header, $p_add_dir, $p_remove_dir)) != 1)
		{
		  // ----- Close the tarfile
		  if ($p_tar_mode == "tar")
		  {
			fclose($v_tar);
			fclose($v_temp_tar);
		  }
		  else
		  {
			gzclose($v_tar);
			gzclose($v_temp_tar);
		  }
		  @unlink($p_temp_tarname);

		  // ----- Return status
		  TrFctEnd(__FILE__, __LINE__, $v_result);
		  return $v_result;
		}

		// ----- Trace
		TrFctMessage(__FILE__, __LINE__, 2, "Skip old file '$v_header[filename]'");

		// ----- Jump to next file
		if ($p_tar_mode == "tar")
		  fseek($v_tar, ftell($v_tar)+(ceil(($v_old_size/512))*512));
		else
		  gzseek($v_tar, gztell($v_tar)+(ceil(($v_old_size/512))*512));

		// ----- Add the array describing the file into the list
		$p_list_detail[$v_nb] = $v_header;
		$p_list_detail[$v_nb][status] = "updated";

		// ----- Increment
		$v_nb++;
	  }

	  // ----- Look for end of file
	  if ($p_tar_mode == "tar")
		$v_end_of_file = feof($v_tar);
	  else
		$v_end_of_file = gzeof($v_tar);
	}

	// ----- Look for files that does not exists in the archive and need to be added
	for ($i=0; $i<sizeof($p_file_list); $i++)
	{
	  // ----- Look if file not found in the archive
	  if (!$v_found_list[$i])
	  {
		TrFctMessage(__FILE__, __LINE__, 3, "File '$p_file_list[$i]' need to be added");

		// ----- Add the file
		if (($v_result = PclTarHandleAddFile($v_temp_tar, $p_file_list[$i], $p_tar_mode, $v_header, $p_add_dir, $p_remove_dir)) != 1)
		{
		  // ----- Close the tarfile
		  if ($p_tar_mode == "tar")
		  {
			fclose($v_tar);
			fclose($v_temp_tar);
		  }
		  else
		  {
			gzclose($v_tar);
			gzclose($v_temp_tar);
		  }
		  @unlink($p_temp_tarname);

		  // ----- Return status
		  TrFctEnd(__FILE__, __LINE__, $v_result);
		  return $v_result;
		}

		// ----- Add the array describing the file into the list
		$p_list_detail[$v_nb] = $v_header;
		$p_list_detail[$v_nb][status] = "added";

		// ----- Increment
		$v_nb++;
	  }
	  else
	  {
		TrFctMessage(__FILE__, __LINE__, 3, "File '$p_file_list[$i]' was already updated if needed");
	  }
	}

	// ----- Write the last empty buffer
	PclTarHandleFooter($v_temp_tar, $p_tar_mode);

	// ----- Close the tarfile
	if ($p_tar_mode == "tar")
	{
	  fclose($v_tar);
	  fclose($v_temp_tar);
	}
	else
	{
	  gzclose($v_tar);
	  gzclose($v_temp_tar);
	}

	// ----- Unlink tar file
	if (!@unlink($p_tarname))
	{
	  // ----- Error log
	  PclErrorLog(-11, "Error while deleting archive name $p_tarname");
	}


	// ----- Rename tar file
	if (!@rename($v_temp_tarname, $p_tarname))
	{
	  // ----- Error log
	  PclErrorLog(-12, "Error while renaming temporary file $v_temp_tarname to archive name $p_tarname");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleReadHeader()
  // Description :
  // Parameters :
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleReadHeader($v_binary_data, &$v_header)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleReadHeader", "");
	$v_result=1;

	// ----- Read the 512 bytes header
	/*
	if ($p_tar_mode == "tar")
	  $v_binary_data = fread($p_tar, 512);
	else
	  $v_binary_data = gzread($p_tar, 512);
	*/

	// ----- Look for no more block
	if (strlen($v_binary_data)==0)
	{
	  $v_header[filename] = "";
	  $v_header[status] = "empty";

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, $v_result, "End of archive found");
	  return $v_result;
	}

	// ----- Look for invalid block size
	if (strlen($v_binary_data) != 512)
	{
	  $v_header[filename] = "";
	  $v_header[status] = "invalid_header";
	  TrFctMessage(__FILE__, __LINE__, 2, "Invalid block size : ".strlen($v_binary_data));

	  // ----- Error log
	  PclErrorLog(-10, "Invalid block size : ".strlen($v_binary_data));

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Calculate the checksum
	$v_checksum = 0;
	// ..... First part of the header
	for ($i=0; $i<148; $i++)
	{
	  $v_checksum+=ord(substr($v_binary_data,$i,1));
	}
	// ..... Ignore the checksum value and replace it by ' ' (space)
	for ($i=148; $i<156; $i++)
	{
	  $v_checksum += ord(' ');
	}
	// ..... Last part of the header
	for ($i=156; $i<512; $i++)
	{
	  $v_checksum+=ord(substr($v_binary_data,$i,1));
	}
	TrFctMessage(__FILE__, __LINE__, 3, "Calculated checksum : $v_checksum");

	// ----- Extract the values
	TrFctMessage(__FILE__, __LINE__, 2, "Header : '$v_binary_data'");
	$v_data = unpack("a100filename/a8mode/a8uid/a8gid/a12size/a12mtime/a8checksum/a1typeflag/a100link/a6magic/a2version/a32uname/a32gname/a8devmajor/a8devminor", $v_binary_data);

	// ----- Extract the checksum for check
	$v_header["checksum"] = OctDec(trim($v_data["checksum"]));
	TrFctMessage(__FILE__, __LINE__, 3, "File checksum : $v_header[checksum]");
	if ($v_header["checksum"] != $v_checksum)
	{
	  TrFctMessage(__FILE__, __LINE__, 2, "File checksum is invalid : $v_checksum calculated, $v_header[checksum] expected");

	  $v_header["filename"] = "";
	  $v_header["status"] = "invalid_header";

	  // ----- Look for last block (empty block)
	  if (($v_checksum == 256) && ($v_header["checksum"] == 0))
	  {
		$v_header["status"] = "empty";
		// ----- Return
		TrFctEnd(__FILE__, __LINE__, $v_result, "End of archive found");
		return $v_result;
	  }

	  // ----- Error log
	  PclErrorLog(-13, "Invalid checksum : $v_checksum calculated, " . $v_header["checksum"] . " expected");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}
	TrFctMessage(__FILE__, __LINE__, 2, "File checksum is valid ($v_checksum)");

	// ----- Extract the properties
	$v_header["filename"] = trim($v_data["filename"]);
	TrFctMessage(__FILE__, __LINE__, 2, "Name : '$v_header[filename]'");
	$v_header["mode"] = OctDec(trim($v_data["mode"]));
	TrFctMessage(__FILE__, __LINE__, 2, "Mode : '".DecOct($v_header["mode"])."'");
	$v_header["uid"] = OctDec(trim($v_data["uid"]));
	TrFctMessage(__FILE__, __LINE__, 2, "Uid : '$v_header[uid]'");
	$v_header["gid"] = OctDec(trim($v_data["gid"]));
	TrFctMessage(__FILE__, __LINE__, 2, "Gid : '$v_header[gid]'");
	$v_header["size"] = OctDec(trim($v_data["size"]));
	TrFctMessage(__FILE__, __LINE__, 2, "Size : '$v_header[size]'");
	$v_header["mtime"] = OctDec(trim($v_data["mtime"]));
	TrFctMessage(__FILE__, __LINE__, 2, "Date : ".date("l dS of F Y h:i:s A", $v_header["mtime"]));
	if (($v_header["typeflag"] = $v_data["typeflag"]) == "5")
	{
	  $v_header["size"] = 0;
	  TrFctMessage(__FILE__, __LINE__, 2, "Size (folder) : '$v_header[size]'");
	}
	TrFctMessage(__FILE__, __LINE__, 2, "File typeflag : $v_header[typeflag]");
	/* ----- All these fields are removed form the header because they do not carry interesting info
	$v_header[link] = trim($v_data[link]);
	TrFctMessage(__FILE__, __LINE__, 2, "Linkname : $v_header[linkname]");
	$v_header[magic] = trim($v_data[magic]);
	TrFctMessage(__FILE__, __LINE__, 2, "Magic : $v_header[magic]");
	$v_header[version] = trim($v_data[version]);
	TrFctMessage(__FILE__, __LINE__, 2, "Version : $v_header[version]");
	$v_header[uname] = trim($v_data[uname]);
	TrFctMessage(__FILE__, __LINE__, 2, "Uname : $v_header[uname]");
	$v_header[gname] = trim($v_data[gname]);
	TrFctMessage(__FILE__, __LINE__, 2, "Gname : $v_header[gname]");
	$v_header[devmajor] = trim($v_data[devmajor]);
	TrFctMessage(__FILE__, __LINE__, 2, "Devmajor : $v_header[devmajor]");
	$v_header[devminor] = trim($v_data[devminor]);
	TrFctMessage(__FILE__, __LINE__, 2, "Devminor : $v_header[devminor]");
	*/

	// ----- Set the status field
	$v_header["status"] = "ok";

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandlerDirCheck()
  // Description :
  //	Check if a directory exists, if not it creates it and all the parents directory
  //	which may be useful.
  // Parameters :
  //	$p_dir : Directory path to check (without / at the end).
  // Return Values :
  //	1 : OK
  //	-1 : Unable to create directory
  // --------------------------------------------------------------------------------
  function PclTarHandlerDirCheck($p_dir)
  {
	$v_result = 1;

	TrFctStart(__FILE__, __LINE__, "PclTarHandlerDirCheck", "$p_dir");

	// ----- Check the directory availability
	if ((is_dir($p_dir)) || ($p_dir == ""))
	{
	  TrFctEnd(__FILE__, __LINE__, "'$p_dir' is a directory");
	  return 1;
	}

	// ----- Look for file alone
	/*
	if (!strstr("$p_dir", "/"))
	{
	  TrFctEnd(__FILE__, __LINE__,  "'$p_dir' is a file with no directory");
	  return 1;
	}
	*/

	// ----- Extract parent directory
	$p_parent_dir = dirname($p_dir);
	TrFctMessage(__FILE__, __LINE__, 3, "Parent directory is '$p_parent_dir'");

	// ----- Just a check
	if ($p_parent_dir != $p_dir)
	{
	  // ----- Look for parent directory
	  if ($p_parent_dir != "")
	  {
		if (($v_result = PclTarHandlerDirCheck($p_parent_dir)) != 1)
		{
		  TrFctEnd(__FILE__, __LINE__, $v_result);
		  return $v_result;
		}
	  }
	}

	// ----- Create the directory
	TrFctMessage(__FILE__, __LINE__, 3, "Create directory '$p_dir'");
	if (!@mkdir($p_dir, 0777))
	{
	  // ----- Error log
	  PclErrorLog(-8, "Unable to create directory '$p_dir'");

	  // ----- Return
	  TrFctEnd(__FILE__, __LINE__, PclErrorCode(), PclErrorString());
	  return PclErrorCode();
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result, "Directory '$p_dir' created");
	return $v_result;
  }
  // --------------------------------------------------------------------------------

  // --------------------------------------------------------------------------------
  // Function : PclTarHandleExtension()
  // Description :
  // Parameters :
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandleExtension($p_tarname)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandleExtension", "tar=$p_tarname");

	// ----- Look for file extension
	if ((substr($p_tarname, -7) == ".tar.gz") || (substr($p_tarname, -4) == ".tgz"))
	{
	  TrFctMessage(__FILE__, __LINE__, 2, "Archive is a gzip tar");
	  $v_tar_mode = "tgz";
	}
	else if (substr($p_tarname, -4) == ".tar")
	{
	  TrFctMessage(__FILE__, __LINE__, 2, "Archive is a tar");
	  $v_tar_mode = "tar";
	}
	else
	{
	  // ----- Error log
	  PclErrorLog(-9, "Invalid archive extension");

	  TrFctMessage(__FILE__, __LINE__, PclErrorCode(), PclErrorString());

	  $v_tar_mode = "";
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_tar_mode);
	return $v_tar_mode;
  }
  // --------------------------------------------------------------------------------


  // --------------------------------------------------------------------------------
  // Function : PclTarHandlePathReduction()
  // Description :
  // Parameters :
  // Return Values :
  // --------------------------------------------------------------------------------
  function PclTarHandlePathReduction($p_dir)
  {
	TrFctStart(__FILE__, __LINE__, "PclTarHandlePathReduction", "dir='$p_dir'");
	$v_result = "";

	// ----- Look for not empty path
	if ($p_dir != "")
	{
	  // ----- Explode path by directory names
	  $v_list = explode("/", $p_dir);

	  // ----- Study directories from last to first
	  for ($i=sizeof($v_list)-1; $i>=0; $i--)
	  {
		// ----- Look for current path
		if ($v_list[$i] == ".")
		{
		  // ----- Ignore this directory
		  // Should be the first $i=0, but no check is done
		}
		else if ($v_list[$i] == "..")
		{
		  // ----- Ignore it and ignore the $i-1
		  $i--;
		}
		else if (($v_list[$i] == "") && ($i!=(sizeof($v_list)-1)) && ($i!=0))
		{
		  // ----- Ignore only the double '//' in path,
		  // but not the first and last '/'
		}
		else
		{
		  $v_result = $v_list[$i].($i!=(sizeof($v_list)-1)?"/".$v_result:"");
		}
	  }
	}

	// ----- Return
	TrFctEnd(__FILE__, __LINE__, $v_result);
	return $v_result;
  }
  // --------------------------------------------------------------------------------


// ----- End of double include look
}
?>