864 lines
25 KiB
PHP
864 lines
25 KiB
PHP
<?php
|
|
/* vim: set expandtab sw=4 ts=4 sts=4: */
|
|
/**
|
|
* file upload functions
|
|
*
|
|
* @version $Id$
|
|
*/
|
|
|
|
/**
|
|
*
|
|
* @todo replace error messages with localized string
|
|
* @todo when uploading a file into a blob field, should we also consider using
|
|
* chunks like in import? UPDATE `table` SET `field` = `field` + [chunk]
|
|
*/
|
|
class PMA_File
|
|
{
|
|
/**
|
|
* @var string the temporary file name
|
|
* @access protected
|
|
*/
|
|
var $_name = null;
|
|
|
|
/**
|
|
* @var string the content
|
|
* @access protected
|
|
*/
|
|
var $_content = null;
|
|
|
|
/**
|
|
* @var string the error message
|
|
* @access protected
|
|
*/
|
|
var $_error_message = '';
|
|
|
|
/**
|
|
* @var bool whether the file is temporary or not
|
|
* @access protected
|
|
*/
|
|
var $_is_temp = false;
|
|
|
|
/**
|
|
* @var string type of compression
|
|
* @access protected
|
|
*/
|
|
var $_compression = null;
|
|
|
|
/**
|
|
* @var integer
|
|
*/
|
|
var $_offset = 0;
|
|
|
|
/**
|
|
* @var integer size of chunk to read with every step
|
|
*/
|
|
var $_chunk_size = 32768;
|
|
|
|
/**
|
|
* @var resource file handle
|
|
*/
|
|
var $_handle = null;
|
|
|
|
/**
|
|
* @var boolean whether to decompress content before returning
|
|
*/
|
|
var $_decompress = false;
|
|
|
|
/**
|
|
* @var string charset of file
|
|
*/
|
|
var $_charset = null;
|
|
|
|
/**
|
|
* constructor
|
|
*
|
|
* @access public
|
|
* @uses PMA_File::setName()
|
|
* @param string $name file name
|
|
*/
|
|
function __construct($name = false)
|
|
{
|
|
if ($name) {
|
|
$this->setName($name);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* destructor
|
|
*
|
|
* @see PMA_File::cleanUp()
|
|
* @access public
|
|
* @uses PMA_File::cleanUp()
|
|
*/
|
|
function __destruct()
|
|
{
|
|
$this->cleanUp();
|
|
}
|
|
|
|
/**
|
|
* deletes file if it is temporary, usally from a moved upload file
|
|
*
|
|
* @access public
|
|
* @uses PMA_File::delet()
|
|
* @uses PMA_File::isTemp()
|
|
* @return boolean success
|
|
*/
|
|
function cleanUp()
|
|
{
|
|
if ($this->isTemp()) {
|
|
return $this->delete();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* deletes the file
|
|
*
|
|
* @access public
|
|
* @uses PMA_File::getName()
|
|
* @uses unlink()
|
|
* @return boolean success
|
|
*/
|
|
function delete()
|
|
{
|
|
return unlink($this->getName());
|
|
}
|
|
|
|
/**
|
|
* checks or sets the temp flag for this file
|
|
* file objects with temp flags are deleted with object destruction
|
|
*
|
|
* @access public
|
|
* @uses PMA_File::$_is_temp to set and read it
|
|
* @param boolean sets the temp flag
|
|
* @return boolean PMA_File::$_is_temp
|
|
*/
|
|
function isTemp($is_temp = null)
|
|
{
|
|
if (null !== $is_temp) {
|
|
$this->_is_temp = (bool) $is_temp;
|
|
}
|
|
|
|
return $this->_is_temp;
|
|
}
|
|
|
|
/**
|
|
* accessor
|
|
*
|
|
* @access public
|
|
* @uses PMA_File::$_name
|
|
* @param string $name file name
|
|
* @access public
|
|
*/
|
|
function setName($name)
|
|
{
|
|
$this->_name = trim($name);
|
|
}
|
|
|
|
/**
|
|
* @access public
|
|
* @uses PMA_File::getName()
|
|
* @uses PMA_File::isUploaded()
|
|
* @uses PMA_File::checkUploadedFile()
|
|
* @uses PMA_File::isReadable()
|
|
* @uses PMA_File::$_content
|
|
* @uses function_exists()
|
|
* @uses file_get_contents()
|
|
* @uses filesize()
|
|
* @uses fread()
|
|
* @uses fopen()
|
|
* @uses bin2hex()
|
|
* @return string binary file content
|
|
*/
|
|
function getContent($as_binary = true, $offset = 0, $length = null)
|
|
{
|
|
if (null === $this->_content) {
|
|
if ($this->isUploaded() && ! $this->checkUploadedFile()) {
|
|
return false;
|
|
}
|
|
|
|
if (! $this->isReadable()) {
|
|
return false;
|
|
}
|
|
|
|
if (function_exists('file_get_contents')) {
|
|
$this->_content = file_get_contents($this->getName());
|
|
} elseif ($size = filesize($this->getName())) {
|
|
$this->_content = fread(fopen($this->getName(), 'rb'), $size);
|
|
}
|
|
}
|
|
|
|
if (! empty($this->_content) && $as_binary) {
|
|
return '0x' . bin2hex($this->_content);
|
|
}
|
|
|
|
if (null !== $length) {
|
|
return substr($this->_content, $offset, $length);
|
|
} elseif ($offset > 0) {
|
|
return substr($this->_content, $offset);
|
|
}
|
|
|
|
return $this->_content;
|
|
}
|
|
|
|
/**
|
|
* @access public
|
|
* @uses PMA_File::getName()
|
|
* @uses is_uploaded_file()
|
|
*/
|
|
function isUploaded()
|
|
{
|
|
return is_uploaded_file($this->getName());
|
|
}
|
|
|
|
/**
|
|
* accessor
|
|
*
|
|
* @access public
|
|
* @uses PMA_File::$name as return value
|
|
* @return string PMA_File::$_name
|
|
*/
|
|
function getName()
|
|
{
|
|
return $this->_name;
|
|
}
|
|
|
|
/**
|
|
* @todo replace error message with localized string
|
|
* @access public
|
|
* @uses PMA_File::isUploaded()
|
|
* @uses PMA_File::setName()
|
|
* @uses PMA_File::$_error_message
|
|
* @param string name of file uploaded
|
|
* @return boolean success
|
|
*/
|
|
function setUploadedFile($name)
|
|
{
|
|
$this->setName($name);
|
|
|
|
if (! $this->isUploaded()) {
|
|
$this->setName(null);
|
|
$this->_error_message = 'not an uploaded file';
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @access public
|
|
* @uses PMA_File::fetchUploadedFromTblChangeRequestMultiple()
|
|
* @uses PMA_File::setUploadedFile()
|
|
* @uses PMA_File::$_error_message
|
|
* @uses $GLOBALS['strUploadErrorIniSize']
|
|
* @uses $GLOBALS['strUploadErrorFormSize']
|
|
* @uses $GLOBALS['strUploadErrorPartial']
|
|
* @uses $GLOBALS['strUploadErrorNoTempDir']
|
|
* @uses $GLOBALS['strUploadErrorCantWrite']
|
|
* @uses $GLOBALS['strUploadErrorExtension']
|
|
* @uses $GLOBALS['strUploadErrorUnknown']
|
|
* @uses $_FILES
|
|
* @param string $key a numeric key used to identify the different rows
|
|
* @param string $primary_key
|
|
* @return boolean success
|
|
*/
|
|
function setUploadedFromTblChangeRequest($key, $primary = null)
|
|
{
|
|
if (! isset($_FILES['fields_upload_' . $key])) {
|
|
return false;
|
|
}
|
|
|
|
$file = $_FILES['fields_upload_' . $key];
|
|
if (null !== $primary) {
|
|
$file = PMA_File::fetchUploadedFromTblChangeRequestMultiple($file, $primary);
|
|
}
|
|
|
|
// check for file upload errors
|
|
switch ($file['error']) {
|
|
// cybot_tm: we do not use the PHP constants here cause not all constants
|
|
// are defined in all versions of PHP - but the correct constants names
|
|
// are given as comment
|
|
case 0: //UPLOAD_ERR_OK:
|
|
return $this->setUploadedFile($file['tmp_name']);
|
|
break;
|
|
case 4: //UPLOAD_ERR_NO_FILE:
|
|
break;
|
|
case 1: //UPLOAD_ERR_INI_SIZE:
|
|
$this->_error_message = $GLOBALS['strUploadErrorIniSize'];
|
|
break;
|
|
case 2: //UPLOAD_ERR_FORM_SIZE:
|
|
$this->_error_message = $GLOBALS['strUploadErrorFormSize'];
|
|
break;
|
|
case 3: //UPLOAD_ERR_PARTIAL:
|
|
$this->_error_message = $GLOBALS['strUploadErrorPartial'];
|
|
break;
|
|
case 6: //UPLOAD_ERR_NO_TMP_DIR:
|
|
$this->_error_message = $GLOBALS['strUploadErrorNoTempDir'];
|
|
break;
|
|
case 7: //UPLOAD_ERR_CANT_WRITE:
|
|
$this->_error_message = $GLOBALS['strUploadErrorCantWrite'];
|
|
break;
|
|
case 8: //UPLOAD_ERR_EXTENSION:
|
|
$this->_error_message = $GLOBALS['strUploadErrorExtension'];
|
|
break;
|
|
default:
|
|
$this->_error_message = $GLOBALS['strUploadErrorUnknown'];
|
|
} // end switch
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* strips some dimension from the multi-dimensional array from $_FILES
|
|
*
|
|
* <code>
|
|
* $file['name']['multi_edit'][$primary] = [value]
|
|
* $file['type']['multi_edit'][$primary] = [value]
|
|
* $file['size']['multi_edit'][$primary] = [value]
|
|
* $file['tmp_name']['multi_edit'][$primary] = [value]
|
|
* $file['error']['multi_edit'][$primary] = [value]
|
|
*
|
|
* // becomes:
|
|
*
|
|
* $file['name'] = [value]
|
|
* $file['type'] = [value]
|
|
* $file['size'] = [value]
|
|
* $file['tmp_name'] = [value]
|
|
* $file['error'] = [value]
|
|
* </code>
|
|
*
|
|
* @todo re-check if requirements changes to PHP >= 4.2.0
|
|
* @access public
|
|
* @static
|
|
* @param array $file the array
|
|
* @param string $primary
|
|
* @return array
|
|
*/
|
|
function fetchUploadedFromTblChangeRequestMultiple($file, $primary)
|
|
{
|
|
$new_file = array(
|
|
'name' => $file['name']['multi_edit'][$primary],
|
|
'type' => $file['type']['multi_edit'][$primary],
|
|
'size' => $file['size']['multi_edit'][$primary],
|
|
'tmp_name' => $file['tmp_name']['multi_edit'][$primary],
|
|
'error' => $file['error']['multi_edit'][$primary],
|
|
);
|
|
|
|
return $new_file;
|
|
}
|
|
|
|
/**
|
|
* sets the name if the file to the one selected in the tbl_change form
|
|
*
|
|
* @access public
|
|
* @uses $_REQUEST
|
|
* @uses PMA_File::setLocalSelectedFile()
|
|
* @uses is_string()
|
|
* @param string $key a numeric key used to identify the different rows
|
|
* @param string $primary_key
|
|
* @return boolean success
|
|
*/
|
|
function setSelectedFromTblChangeRequest($key, $primary = null)
|
|
{
|
|
if (null !== $primary) {
|
|
if (! empty($_REQUEST['fields_uploadlocal_' . $key]['multi_edit'][$primary])
|
|
&& is_string($_REQUEST['fields_uploadlocal_' . $key]['multi_edit'][$primary])) {
|
|
// ... whether with multiple rows ...
|
|
return $this->setLocalSelectedFile($_REQUEST['fields_uploadlocal_' . $key]['multi_edit'][$primary]);
|
|
} else {
|
|
return false;
|
|
}
|
|
} elseif (! empty($_REQUEST['fields_uploadlocal_' . $key])
|
|
&& is_string($_REQUEST['fields_uploadlocal_' . $key])) {
|
|
return $this->setLocalSelectedFile($_REQUEST['fields_uploadlocal_' . $key]);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @access public
|
|
* @uses PMA_File->$_error_message as return value
|
|
* @return string error message
|
|
*/
|
|
function getError()
|
|
{
|
|
return $this->_error_message;
|
|
}
|
|
|
|
/**
|
|
* @access public
|
|
* @uses PMA_File->$_error_message to check it
|
|
* @return boolean whether an error occured or not
|
|
*/
|
|
function isError()
|
|
{
|
|
return ! empty($this->_error_message);
|
|
}
|
|
|
|
/**
|
|
* checks the superglobals provided if the tbl_change form is submitted
|
|
* and uses the submitted/selected file
|
|
*
|
|
* @access public
|
|
* @uses PMA_File::setUploadedFromTblChangeRequest()
|
|
* @uses PMA_File::setSelectedFromTblChangeRequest()
|
|
* @param string $key a numeric key used to identify the different rows
|
|
* @param string $primary_key
|
|
* @return boolean success
|
|
*/
|
|
function checkTblChangeForm($key, $primary_key)
|
|
{
|
|
if ($this->setUploadedFromTblChangeRequest($key, $primary_key)) {
|
|
// well done ...
|
|
$this->_error_message = '';
|
|
return true;
|
|
/*
|
|
} elseif ($this->setUploadedFromTblChangeRequest($key)) {
|
|
// well done ...
|
|
$this->_error_message = '';
|
|
return true;
|
|
*/
|
|
} elseif ($this->setSelectedFromTblChangeRequest($key, $primary_key)) {
|
|
// well done ...
|
|
$this->_error_message = '';
|
|
return true;
|
|
/*
|
|
} elseif ($this->setSelectedFromTblChangeRequest($key)) {
|
|
// well done ...
|
|
$this->_error_message = '';
|
|
return true;
|
|
*/
|
|
}
|
|
// all failed, whether just no file uploaded/selected or an error
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @access public
|
|
* @uses $GLOBALS['strFileCouldNotBeRead']
|
|
* @uses PMA_File::setName()
|
|
* @uses PMA_securePath()
|
|
* @uses PMA_userDir()
|
|
* @uses $GLOBALS['cfg']['UploadDir']
|
|
* @param string $name
|
|
* @return boolean success
|
|
*/
|
|
function setLocalSelectedFile($name)
|
|
{
|
|
if (empty($GLOBALS['cfg']['UploadDir'])) return false;
|
|
|
|
$this->setName(PMA_userDir($GLOBALS['cfg']['UploadDir']) . PMA_securePath($name));
|
|
if (! $this->isReadable()) {
|
|
$this->_error_message = $GLOBALS['strFileCouldNotBeRead'];
|
|
$this->setName(null);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @access public
|
|
* @uses PMA_File::getName()
|
|
* @uses is_readable()
|
|
* @uses ob_start()
|
|
* @uses ob_end_clean()
|
|
* @return boolean whether the file is readable or not
|
|
*/
|
|
function isReadable()
|
|
{
|
|
// surpress warnings from beeing displayed, but not from beeing logged
|
|
// any file access outside of open_basedir will issue a warning
|
|
ob_start();
|
|
$is_readable = is_readable($this->getName());
|
|
ob_end_clean();
|
|
return $is_readable;
|
|
}
|
|
|
|
/**
|
|
* If we are on a server with open_basedir, we must move the file
|
|
* before opening it. The FAQ 1.11 explains how to create the "./tmp"
|
|
* directory - if needed
|
|
*
|
|
* @todo replace error message with localized string
|
|
* @todo move check of $cfg['TempDir'] into PMA_Config?
|
|
* @access public
|
|
* @uses $cfg['TempDir']
|
|
* @uses $GLOBALS['strFieldInsertFromFileTempDirNotExists']
|
|
* @uses PMA_File::isReadable()
|
|
* @uses PMA_File::getName()
|
|
* @uses PMA_File::setName()
|
|
* @uses PMA_File::isTemp()
|
|
* @uses PMA_File::$_error_message
|
|
* @uses is_dir()
|
|
* @uses mkdir()
|
|
* @uses chmod()
|
|
* @uses is_writable()
|
|
* @uses basename()
|
|
* @uses move_uploaded_file()
|
|
* @uses ob_start()
|
|
* @uses ob_end_clean()
|
|
* @return boolean whether uploaded fiel is fine or not
|
|
*/
|
|
function checkUploadedFile()
|
|
{
|
|
if ($this->isReadable()) {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* it is not important if open_basedir is set - we just cannot read the file
|
|
* so we try to move it
|
|
if ('' != ini_get('open_basedir')) {
|
|
*/
|
|
|
|
// check tmp dir config
|
|
if (empty($GLOBALS['cfg']['TempDir'])) {
|
|
$GLOBALS['cfg']['TempDir'] = 'tmp/';
|
|
}
|
|
|
|
// surpress warnings from beeing displayed, but not from beeing logged
|
|
ob_start();
|
|
// check tmp dir
|
|
if (! is_dir($GLOBALS['cfg']['TempDir'])) {
|
|
// try to create the tmp directory
|
|
if (@mkdir($GLOBALS['cfg']['TempDir'], 0777)) {
|
|
chmod($GLOBALS['cfg']['TempDir'], 0777);
|
|
} else {
|
|
// create tmp dir failed
|
|
$this->_error_message = $GLOBALS['strFieldInsertFromFileTempDirNotExists'];
|
|
ob_end_clean();
|
|
return false;
|
|
}
|
|
}
|
|
ob_end_clean();
|
|
|
|
if (! is_writable($GLOBALS['cfg']['TempDir'])) {
|
|
// cannot create directory or access, point user to FAQ 1.11
|
|
$this->_error_message = $GLOBALS['strFieldInsertFromFileTempDirNotExists'];
|
|
return false;
|
|
}
|
|
|
|
$new_file_to_upload = $GLOBALS['cfg']['TempDir'] . '/' . basename($this->getName());
|
|
|
|
// surpress warnings from beeing displayed, but not from beeing logged
|
|
// any file access outside of open_basedir will issue a warning
|
|
ob_start();
|
|
$move_uploaded_file_result = move_uploaded_file($this->getName(), $new_file_to_upload);
|
|
ob_end_clean();
|
|
if (! $move_uploaded_file_result) {
|
|
$this->_error_message = 'error while moving uploaded file';
|
|
return false;
|
|
}
|
|
|
|
$this->setName($new_file_to_upload);
|
|
$this->isTemp(true);
|
|
|
|
if (! $this->isReadable()) {
|
|
$this->_error_message = 'cannot read (moved) upload file';
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Detects what compression filse uses
|
|
*
|
|
* @todo move file read part into readChunk() or getChunk()
|
|
* @todo add support for compression plugins
|
|
* @uses $GLOBALS['strFileCouldNotBeRead']
|
|
* @uses PMA_File::$_compression to set it
|
|
* @uses PMA_File::getName()
|
|
* @uses fopen()
|
|
* @uses fread()
|
|
* @uses strlen()
|
|
* @uses fclose()
|
|
* @uses chr()
|
|
* @uses substr()
|
|
* @access protected
|
|
* @return string MIME type of compression, none for none
|
|
*/
|
|
function _detectCompression()
|
|
{
|
|
// surpress warnings from beeing displayed, but not from beeing logged
|
|
// f.e. any file access outside of open_basedir will issue a warning
|
|
ob_start();
|
|
$file = fopen($this->getName(), 'rb');
|
|
ob_end_clean();
|
|
|
|
if (! $file) {
|
|
$this->_error_message = $GLOBALS['strFileCouldNotBeRead'];
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @todo
|
|
* get registered plugins for file compression
|
|
|
|
foreach (PMA_getPlugins($type = 'compression') as $plugin) {
|
|
if (call_user_func_array(array($plugin['classname'], 'canHandle'), array($this->getName()))) {
|
|
$this->setCompressionPlugin($plugin);
|
|
break;
|
|
}
|
|
}
|
|
*/
|
|
|
|
$test = fread($file, 4);
|
|
$len = strlen($test);
|
|
fclose($file);
|
|
|
|
if ($len >= 2 && $test[0] == chr(31) && $test[1] == chr(139)) {
|
|
$this->_compression = 'application/gzip';
|
|
} elseif ($len >= 3 && substr($test, 0, 3) == 'BZh') {
|
|
$this->_compression = 'application/bzip2';
|
|
} elseif ($len >= 4 && $test == "PK\003\004") {
|
|
$this->_compression = 'application/zip';
|
|
} else {
|
|
$this->_compression = 'none';
|
|
}
|
|
|
|
return $this->_compression;
|
|
}
|
|
|
|
/**
|
|
* whether the content should be decompressed before returned
|
|
*/
|
|
function setDecompressContent($decompress)
|
|
{
|
|
$this->_decompress = (bool) $decompress;
|
|
}
|
|
|
|
function getHandle()
|
|
{
|
|
if (null === $this->_handle) {
|
|
$this->open();
|
|
}
|
|
return $this->_handle;
|
|
}
|
|
|
|
function setHandle($handle)
|
|
{
|
|
$this->_handle = $handle;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
function open()
|
|
{
|
|
if (! $this->_decompress) {
|
|
$this->_handle = @fopen($this->getName(), 'r');
|
|
}
|
|
|
|
switch ($this->getCompression()) {
|
|
case false:
|
|
return false;
|
|
case 'application/bzip2':
|
|
if ($GLOBALS['cfg']['BZipDump'] && @function_exists('bzopen')) {
|
|
$this->_handle = @bzopen($this->getName(), 'r');
|
|
} else {
|
|
$this->_error_message = sprintf($GLOBALS['strUnsupportedCompressionDetected'], $this->getCompression());
|
|
return false;
|
|
}
|
|
break;
|
|
case 'application/gzip':
|
|
if ($GLOBALS['cfg']['GZipDump'] && @function_exists('gzopen')) {
|
|
$this->_handle = @gzopen($this->getName(), 'r');
|
|
} else {
|
|
$this->_error_message = sprintf($GLOBALS['strUnsupportedCompressionDetected'], $this->getCompression());
|
|
return false;
|
|
}
|
|
break;
|
|
case 'application/zip':
|
|
if ($GLOBALS['cfg']['GZipDump'] && @function_exists('gzinflate')) {
|
|
include_once './libraries/unzip.lib.php';
|
|
$this->_handle = new SimpleUnzip();
|
|
$this->_handle->ReadFile($this->getName());
|
|
if ($this->_handle->Count() == 0) {
|
|
$this->_error_message = $GLOBALS['strNoFilesFoundInZip'];
|
|
return false;
|
|
} elseif ($this->_handle->GetError(0) != 0) {
|
|
$this->_error_message = $GLOBALS['strErrorInZipFile'] . ' ' . $this->_handle->GetErrorMsg(0);
|
|
return false;
|
|
} else {
|
|
$this->content_uncompressed = $this->_handle->GetData(0);
|
|
}
|
|
// We don't need to store it further
|
|
$this->_handle = null;
|
|
} else {
|
|
$this->_error_message = sprintf($GLOBALS['strUnsupportedCompressionDetected'], $this->getCompression());
|
|
return false;
|
|
}
|
|
break;
|
|
case 'none':
|
|
$this->_handle = @fopen($this->getName(), 'r');
|
|
break;
|
|
default:
|
|
$this->_error_message = sprintf($GLOBALS['strUnsupportedCompressionDetected'], $this->getCompression());
|
|
return false;
|
|
break;
|
|
}
|
|
|
|
|
|
}
|
|
|
|
function getCharset()
|
|
{
|
|
return $this->_charset;
|
|
}
|
|
|
|
function setCharset($charset)
|
|
{
|
|
$this->_charset = $charset;
|
|
}
|
|
|
|
/**
|
|
* @uses PMA_File::$_compression as return value
|
|
* @uses PMA_File::detectCompression()
|
|
* @return string MIME type of compression, none for none
|
|
* @access public
|
|
*/
|
|
function getCompression()
|
|
{
|
|
if (null === $this->_compression) {
|
|
return $this->_detectCompression();
|
|
}
|
|
|
|
return $this->_compression;
|
|
}
|
|
|
|
/**
|
|
* advances the file pointer in the file handle by $length bytes/chars
|
|
*
|
|
* @param integer $length numbers of chars/bytes to skip
|
|
* @return boolean
|
|
*/
|
|
function advanceFilePointer($length)
|
|
{
|
|
while ($length > 0) {
|
|
// Disable read progresivity, otherwise we eat all memory!
|
|
$read_multiply = 1; // required?
|
|
$this->getNextChunk($length);
|
|
$length -= $this->getChunkSize();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* http://bugs.php.net/bug.php?id=29532
|
|
* bzip reads a maximum of 8192 bytes on windows systems
|
|
*
|
|
*/
|
|
function getNextChunk($max_size = null)
|
|
{
|
|
if (null !== $max_size) {
|
|
$size = min($max_size, $this->getChunkSize());
|
|
} else {
|
|
$size = $this->getChunkSize();
|
|
}
|
|
|
|
// $result = $this->handler->getNextChunk($size);
|
|
$result = '';
|
|
switch ($this->getCompression()) {
|
|
case 'application/bzip2':
|
|
$result = '';
|
|
while (strlen($result) < $size - 8192 && ! feof($this->getHandle())) {
|
|
$result .= bzread($this->getHandle(), $size);
|
|
}
|
|
break;
|
|
case 'application/gzip':
|
|
$result = gzread($this->getHandle(), $size);
|
|
break;
|
|
case 'application/zip':
|
|
include_once './libraries/unzip.lib.php';
|
|
$import_handle = new SimpleUnzip();
|
|
$import_handle->ReadFile($this->getName());
|
|
if ($import_handle->Count() == 0) {
|
|
$this->_error_message = $GLOBALS['strNoFilesFoundInZip'];
|
|
return false;
|
|
} elseif ($import_handle->GetError(0) != 0) {
|
|
$this->_error_message = $GLOBALS['strErrorInZipFile']
|
|
. ' ' . $import_handle->GetErrorMsg(0);
|
|
return false;
|
|
} else {
|
|
$result = $import_handle->GetData(0);
|
|
}
|
|
break;
|
|
case 'none':
|
|
$result = fread($this->getHandle(), $size);
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
echo $size . ' - ';
|
|
echo strlen($result) . ' - ';
|
|
echo (@$GLOBALS['__len__'] += strlen($result)) . ' - ';
|
|
echo $this->_error_message;
|
|
echo '<hr />';
|
|
|
|
if ($GLOBALS['charset_conversion']) {
|
|
$result = PMA_convert_string($this->getCharset(), $GLOBALS['charset'], $result);
|
|
} else {
|
|
/**
|
|
* Skip possible byte order marks (I do not think we need more
|
|
* charsets, but feel free to add more, you can use wikipedia for
|
|
* reference: <http://en.wikipedia.org/wiki/Byte_Order_Mark>)
|
|
*
|
|
* @todo BOM could be used for charset autodetection
|
|
*/
|
|
if ($this->getOffset() === 0) {
|
|
// UTF-8
|
|
if (strncmp($result, "\xEF\xBB\xBF", 3) == 0) {
|
|
$result = substr($result, 3);
|
|
// UTF-16 BE, LE
|
|
} elseif (strncmp($result, "\xFE\xFF", 2) == 0
|
|
|| strncmp($result, "\xFF\xFE", 2) == 0) {
|
|
$result = substr($result, 2);
|
|
}
|
|
}
|
|
}
|
|
|
|
$this->_offset += $size;
|
|
if (0 === $result) {
|
|
return true;
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
function getOffset()
|
|
{
|
|
return $this->_offset;
|
|
}
|
|
|
|
function getChunkSize()
|
|
{
|
|
return $this->_chunk_size;
|
|
}
|
|
|
|
function setChunkSize($chunk_size)
|
|
{
|
|
$this->_chunk_size = (int) $chunk_size;
|
|
}
|
|
|
|
function getContentLength()
|
|
{
|
|
return strlen($this->_content);
|
|
}
|
|
|
|
function eof()
|
|
{
|
|
if ($this->getHandle()) {
|
|
return feof($this->getHandle());
|
|
} else {
|
|
return ($this->getOffset() >= $this->getContentLength());
|
|
}
|
|
|
|
}
|
|
}
|
|
?>
|