xref: /plugin/dw2pdf/DokuPDF.class.php (revision acf3824dbaec92d3035840be2d0692a2fd02e0e3) 
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 */
10global $conf;
11if(!defined('_MPDF_TEMP_PATH')) define('_MPDF_TEMP_PATH', $conf['tmpdir'].'/dwpdf/'.rand(1,1000).'/');
12if(!defined('_MPDF_TTFONTDATAPATH')) define('_MPDF_TTFONTDATAPATH',$conf['cachedir'].'/mpdf_ttf/');
13
14require_once(dirname(__FILE__)."/mpdf/mpdf.php");
15
16/**
17 * Class DokuPDF
18 * Some DokuWiki specific extentions
19 */
20class DokuPDF extends mpdf {
21
22    function __construct($pagesize='A4', $orientation='portrait'){
23        global $conf;
24
25        io_mkdir_p(_MPDF_TTFONTDATAPATH);
26        io_mkdir_p(_MPDF_TEMP_PATH);
27
28        $format = $pagesize;
29        if($orientation == 'landscape') {
30            $format .= '-L';
31        }
32
33        switch($conf['lang']) {
34            case 'zh':
35            case 'zh-tw':
36            case 'ja':
37            case 'ko':
38                $mode = '+aCJK';
39                break;
40            default:
41                $mode = 'UTF-8-s';
42
43        }
44
45        // we're always UTF-8
46        parent::__construct($mode, $format);
47        $this->SetAutoFont(AUTOFONT_ALL);
48        $this->ignore_invalid_utf8 = true;
49        $this->tabSpaces = 4;
50    }
51
52    /**
53     * Cleanup temp dir
54     */
55    function __destruct(){
56        io_rmdir(_MPDF_TEMP_PATH, true);
57    }
58
59    /**
60     * Decode all paths, since DokuWiki uses XHTML compliant URLs
61     */
62    function GetFullPath(&$path,$basepath=''){
63        $path = htmlspecialchars_decode($path);
64        parent::GetFullPath($path, $basepath);
65    }
66
67    /**
68     * Override the mpdf _getImage function
69     *
70     * This function takes care of gathering the image data from HTTP or
71     * local files before passing the data back to mpdf's original function
72     * making sure that only cached file paths are passed to mpdf. It also
73     * takes care of checking image ACls.
74     */
75    function _getImage(&$file, $firsttime=true, $allowvector=true, $orig_srcpath=false){
76        global $conf;
77
78        // build regex to parse URL back to media info
79        $re = preg_quote(ml('xxx123yyy','',true,'&',true),'/');
80        $re = str_replace('xxx123yyy','([^&\?]*)',$re);
81
82        // extract the real media from a fetch.php uri and determine mime
83        if(preg_match("/^$re/",$file,$m) ||
84            preg_match('/[&\?]media=([^&\?]*)/',$file,$m)){
85            $media = rawurldecode($m[1]);
86            list($ext,$mime) = mimetype($media);
87        }else{
88            list($ext,$mime) = mimetype($file);
89        }
90
91        // local files
92        $local = '';
93        if(substr($file,0,9) == 'dw2pdf://'){
94            // support local files passed from plugins
95            $local = substr($file,9);
96        }elseif(!preg_match('/(\.php|\?)/',$file)){
97            $re = preg_quote(DOKU_URL,'/');
98            // directly access local files instead of using HTTP, skip dynamic content
99            $local = preg_replace("/^$re/i",DOKU_INC,$file);
100        }
101
102        if(substr($mime,0,6) == 'image/'){
103            if(!empty($media)){
104                // any size restrictions?
105                $w = $h = 0;
106                if(preg_match('/[\?&]w=(\d+)/',$file, $m)) $w = $m[1];
107                if(preg_match('/[\?&]h=(\d+)/',$file, $m)) $h = $m[1];
108
109                if(media_isexternal($media)){
110                    $local = media_get_from_URL($media,$ext,-1);
111                    if(!$local) $local = $media; // let mpdf try again
112                }else{
113                    $media = cleanID($media);
114                    //check permissions (namespace only)
115                    if(auth_quickaclcheck(getNS($media).':X') < AUTH_READ){
116                        $file = '';
117                    }
118                    $local  = mediaFN($media);
119                }
120
121                //handle image resizing/cropping
122                if($w && file_exists($local)){
123                    if($h){
124                        $local = media_crop_image($local,$ext,$w,$h);
125                    }else{
126                        $local = media_resize_image($local,$ext,$w,$h);
127                    }
128                }
129            }elseif(media_isexternal($file)){ // fixed external URLs
130                $local = media_get_from_URL($file,$ext,$conf['cachetime']);
131            }
132
133            if($local){
134                $file = $local;
135                $orig_srcpath = $local;
136            }
137        }
138
139        return parent::_getImage($file, $firsttime, $allowvector, $orig_srcpath);
140    }
141
142}
143