includes/import/UploadSourceAdapter.php

   1 <?php
   2 /**
   3  * MediaWiki page data importer.
   4  *
   5  * Copyright © 2003,2005 Brion Vibber <brion@pobox.com>
   6  * https://www.mediawiki.org/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  * http://www.gnu.org/copyleft/gpl.html
  22  *
  23  * @file
  24  * @ingroup SpecialPage
  25  */
  26
  27 /**
  28  * This is a horrible hack used to keep source compatibility.
  29  * @ingroup SpecialPage
  30  */
  31 class UploadSourceAdapter {
  32         /** @var array */
  33         public static $sourceRegistrations = [];
  34
  35         /** @var string */
  36         private $mSource;
  37
  38         /** @var string */
  39         private $mBuffer;
  40
  41         /** @var int */
  42         private $mPosition;
  43
  44         /**
  45          * @param ImportSource $source
  46          * @return string
  47          */
  48         static function registerSource( ImportSource $source ) {
  49                 $id = wfRandomString();
  50
  51                 self::$sourceRegistrations[$id] = $source;
  52
  53                 return $id;
  54         }
  55
  56         /**
  57          * @param string $path
  58          * @param string $mode
  59          * @param array $options
  60          * @param string $opened_path
  61          * @return bool
  62          */
  63         function stream_open( $path, $mode, $options, &$opened_path ) {
  64                 $url = parse_url( $path );
  65                 $id = $url['host'];
  66
  67                 if ( !isset( self::$sourceRegistrations[$id] ) ) {
  68                         return false;
  69                 }
  70
  71                 $this->mSource = self::$sourceRegistrations[$id];
  72
  73                 return true;
  74         }
  75
  76         /**
  77          * @param int $count
  78          * @return string
  79          */
  80         function stream_read( $count ) {
  81                 $return = '';
  82                 $leave = false;
  83
  84                 while ( !$leave && !$this->mSource->atEnd() &&
  85                                 strlen( $this->mBuffer ) < $count ) {
  86                         $read = $this->mSource->readChunk();
  87
  88                         if ( !strlen( $read ) ) {
  89                                 $leave = true;
  90                         }
  91
  92                         $this->mBuffer .= $read;
  93                 }
  94
  95                 if ( strlen( $this->mBuffer ) ) {
  96                         $return = substr( $this->mBuffer, 0, $count );
  97                         $this->mBuffer = substr( $this->mBuffer, $count );
  98                 }
  99
 100                 $this->mPosition += strlen( $return );
 101
 102                 return $return;
 103         }
 104
 105         /**
 106          * @param string $data
 107          * @return bool
 108          */
 109         function stream_write( $data ) {
 110                 return false;
 111         }
 112
 113         /**
 114          * @return mixed
 115          */
 116         function stream_tell() {
 117                 return $this->mPosition;
 118         }
 119
 120         /**
 121          * @return bool
 122          */
 123         function stream_eof() {
 124                 return $this->mSource->atEnd();
 125         }
 126
 127         /**
 128          * @return array
 129          */
 130         function url_stat() {
 131                 $result = [];
 132
 133                 $result['dev'] = $result[0] = 0;
 134                 $result['ino'] = $result[1] = 0;
 135                 $result['mode'] = $result[2] = 0;
 136                 $result['nlink'] = $result[3] = 0;
 137                 $result['uid'] = $result[4] = 0;
 138                 $result['gid'] = $result[5] = 0;
 139                 $result['rdev'] = $result[6] = 0;
 140                 $result['size'] = $result[7] = 0;
 141                 $result['atime'] = $result[8] = 0;
 142                 $result['mtime'] = $result[9] = 0;
 143                 $result['ctime'] = $result[10] = 0;
 144                 $result['blksize'] = $result[11] = 0;
 145                 $result['blocks'] = $result[12] = 0;
 146
 147                 return $result;
 148         }
 149 }