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Set the mb_string internal encoding to ISO-8859-1 whilst uncompressing archives using PclZip. Fixes 'PCLZIP_ERR_BAD_FORMAT (-10) : Invalid block size' errors on systems utilising mbstring.func_overload. Fixes #15789 

git-svn-id: http://svn.automattic.com/wordpress/trunk@17592 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
dd32 2011-04-03 12:32:06 +00:00
parent 65db854b9f
commit 9081c7636c
1 changed files with 12 additions and 1 deletions
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13
wp-admin/includes/file.php
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@ -652,12 +652,23 @@ function _unzip_file_ziparchive($file, $to, $needed_dirs = array() ) {
function _unzip_file_pclzip($file, $to, $needed_dirs = array()) {
global $wp_filesystem;
// See #15789 - PclZip uses string functions on binary data, If it's overloaded with Multibyte safe functions the results are incorrect.
if ( ini_get('mbstring.func_overload') && function_exists('mb_internal_encoding') ) {
$previous_encoding = mb_internal_encoding();
mb_internal_encoding('ISO-8859-1');
}
require_once(ABSPATH . 'wp-admin/includes/class-pclzip.php');
$archive = new PclZip($file);
$archive_files = $archive->extract(PCLZIP_OPT_EXTRACT_AS_STRING);
if ( isset($previous_encoding) )
mb_internal_encoding($previous_encoding);
// Is the archive valid?
if ( false == ($archive_files = $archive->extract(PCLZIP_OPT_EXTRACT_AS_STRING)) )
if ( false === $archive_files )
return new WP_Error('incompatible_archive', __('Incompatible Archive.'), $archive->errorInfo(true));
if ( 0 == count($archive_files) )