113 lines
3.7 KiB
PHP
113 lines
3.7 KiB
PHP
<?php
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namespace dokuwiki\plugin\dw2pdf;
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use Mpdf\Image\ImageProcessor;
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class DokuImageProcessorDecorator extends ImageProcessor
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{
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/**
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* Override the mpdf _getImage function
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*
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* This function takes care of gathering the image data from HTTP or
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* local files before passing the data back to mpdf's original function
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* making sure that only cached file paths are passed to mpdf. It also
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* takes care of checking image ACls.
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*/
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public function getImage(
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&$file,
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$firsttime = true,
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$allowvector = true,
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$orig_srcpath = false,
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$interpolation = false
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) {
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[$file, $orig_srcpath] = self::adjustGetImageLinks($file, $orig_srcpath);
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return parent::getImage($file, $firsttime, $allowvector, $orig_srcpath, $interpolation);
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}
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public static function adjustGetImageLinks($file, $orig_srcpath)
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{
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global $conf;
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// build regex to parse URL back to media info
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$re = preg_quote(ml('xxx123yyy', '', true, '&', true), '/');
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$re = str_replace('xxx123yyy', '([^&\?]*)', $re);
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// extract the real media from a fetch.php uri and determine mime
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if (
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preg_match("/^$re/", $file, $m) ||
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preg_match('/[&?]media=([^&?]*)/', $file, $m)
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) {
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$media = rawurldecode($m[1]);
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[$ext, $mime] = mimetype($media);
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} else {
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[$ext, $mime] = mimetype($file);
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}
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// local files
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$local = '';
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if (substr($file, 0, 9) == 'dw2pdf://') {
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// support local files passed from plugins
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$local = substr($file, 9);
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} elseif (!preg_match('/(\.php|\?)/', $file)) {
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$re = preg_quote(DOKU_URL, '/');
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// directly access local files instead of using HTTP, skip dynamic content
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$local = preg_replace("/^$re/i", DOKU_INC, $file);
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}
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if (substr($mime, 0, 6) == 'image/') {
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if (!empty($media)) {
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// any size restrictions?
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$w = 0;
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$h = 0;
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$rev = '';
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if (preg_match('/[?&]w=(\d+)/', $file, $m)) {
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$w = $m[1];
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}
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if (preg_match('/[?&]h=(\d+)/', $file, $m)) {
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$h = $m[1];
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}
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if (preg_match('/[&?]rev=(\d+)/', $file, $m)) {
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$rev = $m[1];
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}
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if (media_isexternal($media)) {
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$local = media_get_from_URL($media, $ext, -1);
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if (!$local) {
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// let mpdf try again
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$local = $media;
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}
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} else {
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$media = cleanID($media);
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//check permissions (namespace only)
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if (auth_quickaclcheck(getNS($media) . ':X') < AUTH_READ) {
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$file = '';
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$local = '';
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} else {
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$local = mediaFN($media, $rev);
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}
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}
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//handle image resizing/cropping
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if ($w && file_exists($local)) {
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if ($h) {
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$local = media_crop_image($local, $ext, $w, $h);
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} else {
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$local = media_resize_image($local, $ext, $w, $h);
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}
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}
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} elseif (!file_exists($local) && media_isexternal($file)) { // fixed external URLs
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$local = media_get_from_URL($file, $ext, $conf['cachetime']);
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}
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if ($local) {
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$file = $local;
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$orig_srcpath = $local;
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}
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}
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return [$file, $orig_srcpath];
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}
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}
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