xref: /plugin/dw2pdf/DokuPDF.class.php (revision f8f1ee5a484f7358fea428ce9eca45b25e991d22) 
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', $conf['cachedir'] . '/mpdf_ttf/');
13
14require_once __DIR__ . '/vendor/autoload.php';
15
16/**
17 * Class DokuPDF
18 * Some DokuWiki specific extentions
19 */
20class DokuPDF extends \Mpdf\Mpdf {
21
22    function __construct($pagesize = 'A4', $orientation = 'portrait', $fontsize = 11) {
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(
47            array(
48                'mode' => $mode,
49                'format' => $format,
50                'fontsize' => $fontsize
51            )
52        );
53        $this->autoScriptToLang = true;
54        $this->baseScript = 1;
55        $this->autoVietnamese = true;
56        $this->autoArabic = true;
57        $this->autoLangToFont = true;
58
59        $this->ignore_invalid_utf8 = true;
60        $this->tabSpaces = 4;
61    }
62
63    /**
64     * Cleanup temp dir
65     */
66    function __destruct() {
67        io_rmdir(_MPDF_TEMP_PATH, true);
68    }
69
70    /**
71     * Decode all paths, since DokuWiki uses XHTML compliant URLs
72     */
73    function GetFullPath(&$path, $basepath = '') {
74        $path = htmlspecialchars_decode($path);
75        parent::GetFullPath($path, $basepath);
76    }
77
78    /**
79     * Override the mpdf _getImage function
80     *
81     * This function takes care of gathering the image data from HTTP or
82     * local files before passing the data back to mpdf's original function
83     * making sure that only cached file paths are passed to mpdf. It also
84     * takes care of checking image ACls.
85     */
86    function _getImage(&$file, $firsttime = true, $allowvector = true, $orig_srcpath = false, $interpolation = false) {
87        global $conf;
88
89        // build regex to parse URL back to media info
90        $re = preg_quote(ml('xxx123yyy', '', true, '&', true), '/');
91        $re = str_replace('xxx123yyy', '([^&\?]*)', $re);
92
93        // extract the real media from a fetch.php uri and determine mime
94        if(preg_match("/^$re/", $file, $m) ||
95            preg_match('/[&\?]media=([^&\?]*)/', $file, $m)
96        ) {
97            $media = rawurldecode($m[1]);
98            list($ext, $mime) = mimetype($media);
99        } else {
100            list($ext, $mime) = mimetype($file);
101        }
102
103        // local files
104        $local = '';
105        if(substr($file, 0, 9) == 'dw2pdf://') {
106            // support local files passed from plugins
107            $local = substr($file, 9);
108        } elseif(!preg_match('/(\.php|\?)/', $file)) {
109            $re = preg_quote(DOKU_URL, '/');
110            // directly access local files instead of using HTTP, skip dynamic content
111            $local = preg_replace("/^$re/i", DOKU_INC, $file);
112        }
113
114        if(substr($mime, 0, 6) == 'image/') {
115            if(!empty($media)) {
116                // any size restrictions?
117                $w = $h = 0;
118                if(preg_match('/[\?&]w=(\d+)/', $file, $m)) $w = $m[1];
119                if(preg_match('/[\?&]h=(\d+)/', $file, $m)) $h = $m[1];
120
121                if(media_isexternal($media)) {
122                    $local = media_get_from_URL($media, $ext, -1);
123                    if(!$local) $local = $media; // let mpdf try again
124                } else {
125                    $media = cleanID($media);
126                    //check permissions (namespace only)
127                    if(auth_quickaclcheck(getNS($media) . ':X') < AUTH_READ) {
128                        $file = '';
129                    }
130                    $local = mediaFN($media);
131                }
132
133                //handle image resizing/cropping
134                if($w && file_exists($local)) {
135                    if($h) {
136                        $local = media_crop_image($local, $ext, $w, $h);
137                    } else {
138                        $local = media_resize_image($local, $ext, $w, $h);
139                    }
140                }
141            } elseif(media_isexternal($file)) { // fixed external URLs
142                $local = media_get_from_URL($file, $ext, $conf['cachetime']);
143            }
144
145            if($local) {
146                $file = $local;
147                $orig_srcpath = $local;
148            }
149        }
150
151        return parent::_getImage($file, $firsttime, $allowvector, $orig_srcpath, $interpolation);
152    }
153
154}
155