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85afb069a0
If we cannot resize the given file (files such as ICO can't be, for SVG it makes no sense), then we should just return the original file as is rather than an error.
121 lines
4.4 KiB
PHP
121 lines
4.4 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* This file contains functions used by the admin pages
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*
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* @since Moodle 2.1
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* @package admin
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* @copyright 2011 Andrew Davis
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Return a list of page types
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* @param string $pagetype current page type
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* @param stdClass $parentcontext Block's parent context
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* @param stdClass $currentcontext Current context of block
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*/
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function admin_page_type_list($pagetype, $parentcontext, $currentcontext) {
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$array = array(
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'admin-*' => get_string('page-admin-x', 'pagetype'),
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$pagetype => get_string('page-admin-current', 'pagetype')
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);
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return $array;
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}
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/**
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* File serving.
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*
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* @param stdClass $course The course object.
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* @param stdClass $cm The cm object.
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* @param context $context The context object.
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* @param string $filearea The file area.
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* @param array $args List of arguments.
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* @param bool $forcedownload Whether or not to force the download of the file.
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* @param array $options Array of options.
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* @return void|false
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*/
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function core_admin_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = array()) {
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global $CFG;
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if (in_array($filearea, ['logo', 'logocompact', 'favicon'])) {
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$size = array_shift($args); // The path hides the size.
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$itemid = clean_param(array_shift($args), PARAM_INT);
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$filename = clean_param(array_shift($args), PARAM_FILE);
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$themerev = theme_get_revision();
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if ($themerev <= 0) {
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// Normalise to 0 as -1 doesn't place well with paths.
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$themerev = 0;
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}
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// Extract the requested width and height.
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$maxwidth = 0;
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$maxheight = 0;
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if (preg_match('/^\d+x\d+$/', $size)) {
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list($maxwidth, $maxheight) = explode('x', $size);
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$maxwidth = clean_param($maxwidth, PARAM_INT);
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$maxheight = clean_param($maxheight, PARAM_INT);
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}
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$lifetime = 0;
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if ($itemid > 0 && $themerev == $itemid) {
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// The itemid is $CFG->themerev, when 0 or less no caching. Also no caching when they don't match.
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$lifetime = DAYSECS * 60;
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}
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// Anyone, including guests and non-logged in users, can view the logos.
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$options = ['cacheability' => 'public'];
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// Check if we've got a cached file to return. When lifetime is 0 then we don't want to cached one.
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$candidate = $CFG->localcachedir . "/core_admin/$themerev/$filearea/{$maxwidth}x{$maxheight}/$filename";
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if (file_exists($candidate) && $lifetime > 0) {
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send_file($candidate, $filename, $lifetime, 0, false, false, '', false, $options);
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}
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// Find the original file.
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$fs = get_file_storage();
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$filepath = "/{$context->id}/core_admin/{$filearea}/0/{$filename}";
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if (!$file = $fs->get_file_by_hash(sha1($filepath))) {
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send_file_not_found();
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}
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// Check whether width/height are specified, and we can resize the image (some types such as ICO cannot be resized).
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if (($maxwidth === 0 && $maxheight === 0) ||
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!$filedata = $file->resize_image($maxwidth, $maxheight)) {
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if ($lifetime) {
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file_safe_save_content($file->get_content(), $candidate);
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}
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send_stored_file($file, $lifetime, 0, false, $options);
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}
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// If we don't want to cached the file, serve now and quit.
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if (!$lifetime) {
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send_content_uncached($filedata, $filename);
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}
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// Save, serve and quit.
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file_safe_save_content($filedata, $candidate);
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send_file($candidate, $filename, $lifetime, 0, false, false, '', false, $options);
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}
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send_file_not_found();
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}
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