xref: /plugin/dw2pdf/DokuPDF.class.php (revision eac16b1d7e05c60e3616359e369d4b4d712742e9) 
1<?php
2/**
3 * Wrapper around the mpdf library class
4 *
5 * This class overrides some functions to make mpdf make use of DokuWiki'
6 * standard tools instead of its own.
7 *
8 * @author Andreas Gohr <andi@splitbrain.org>
9 */
10
11if(!defined('_MPDF_TEMP_PATH')) define('_MPDF_TEMP_PATH', $conf['tmpdir']);
12if(!defined('_MPDF_TTFONTDATAPATH')) define('_MPDF_TTFONTDATAPATH',$conf['cachedir'].'/mpdf_ttf/');
13require_once(dirname(__FILE__)."/mpdf/mpdf.php");
14
15class DokuPDF extends mpdf {
16
17    function __construct(){
18        io_mkdir_p(_MPDF_TTFONTDATAPATH);
19
20        // we're always UTF-8
21        parent::__construct('UTF-8-s');
22        $this->SetAutoFont(AUTOFONT_ALL);
23        $this->ignore_invalid_utf8 = true;
24
25    }
26
27    /**
28     * Decode all paths, since DokuWiki uses XHTML compliant URLs
29     */
30    function GetFullPath(&$path,$basepath=''){
31        $path = htmlspecialchars_decode($path);
32        parent::GetFullPath($path, $basepath);
33    }
34
35    /**
36     * Override the mpdf _getImage function
37     *
38     * This function takes care of gathering the image data from HTTP or
39     * local files before passing the data back to mpdf's original function
40     * making sure that only cached file paths are passed to mpdf. It also
41     * takes care of checking image ACls.
42     */
43    function _getImage(&$file, $firsttime=true, $allowvector=true, $orig_srcpath=false){
44        list($ext,$mime) = mimetype($file);
45
46        // build regex to parse URL back to media info
47        $re = preg_quote(ml('xxx123yyy','',true,'&',true),'/');
48        $re = str_replace('xxx123yyy','([^&\?]*)',$re);
49
50        // extract the real media from a fetch.php uri and determine mime
51        if(preg_match("/^$re/",$file,$m) ||
52            preg_match('/[&\?]media=([^&\?]*)/',$file,$m)){
53            $media = rawurldecode($m[1]);
54            list($ext,$mime) = mimetype($media);
55        }else{
56            list($ext,$mime) = mimetype($file);
57        }
58
59        if(substr($mime,0,6) == 'image/'){
60            if(!empty($media)){
61                // any size restrictions?
62                if(preg_match('/[\?&]w=(\d+)/',$file, $m)) $w = $m[1];
63                if(preg_match('/[\?&]h=(\d+)/',$file, $m)) $h = $m[1];
64
65                if(preg_match('/^https?:\/\//',$media)){
66                    $local = media_get_from_URL($media,$ext,-1);
67                    if(!$local) $local = $media; // let mpdf try again
68                }else{
69                    $media = cleanID($media);
70                    //check permissions (namespace only)
71                    if(auth_quickaclcheck(getNS($media).':X') < AUTH_READ){
72                        $file = '';
73                    }
74                    $local  = mediaFN($media);
75                }
76
77                //handle image resizing/cropping
78                if($w){
79                    if($h){
80                        $local = media_crop_image($local,$ext,$w,$h);
81                    }else{
82                        $local = media_resize_image($local,$ext,$w,$h);
83                    }
84                }
85            }elseif(preg_match('/^https?:\/\//',$file)){ // fixed external URLs
86                $local = media_get_from_URL($file,$ext,$conf['cachetime']);
87            }
88
89            if($local){
90                $file = $local;
91                $orig_srcpath = $local;
92            }
93        }
94
95        return parent::_getImage($file, $firsttime, $allowvector, $orig_srcpath);
96    }
97
98}
99