source: moodle/trunk/fuentes/admin/tool/xmldb/actions/view_xml/view_xml.class.php @ 136

Last change on this file since 136 was 136, checked in by mabarracus, 4 years ago

Ported code to xenial

File size: 2.8 KB
Line 
1<?php
2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
16
17/**
18 * @package    tool_xmldb
19 * @copyright  2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
20 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
21 */
22
23/**
24 * This class will display one XML file
25 *
26 * @package    tool_xmldb
27 * @copyright  2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
28 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
29 */
30class view_xml extends XMLDBAction {
31
32    /**
33     * Init method, every subclass will have its own
34     */
35    function init() {
36        parent::init();
37        // Set own core attributes
38        $this->can_subaction = ACTION_NONE;
39        //$this->can_subaction = ACTION_HAVE_SUBACTIONS;
40
41        // Set own custom attributes
42        $this->sesskey_protected = false; // This action doesn't need sesskey protection
43
44        // Get needed strings
45        $this->loadStrings(array(
46            // 'key' => 'module',
47        ));
48    }
49
50    /**
51     * Invoke method, every class will have its own
52     * returns true/false on completion, setting both
53     * errormsg and output as necessary
54     * @return mixed
55     */
56    function invoke() {
57        parent::invoke();
58
59        $result = true;
60
61        // Set own core attributes
62        $this->does_generate = ACTION_GENERATE_XML;
63
64        // These are always here
65        global $CFG, $XMLDB;
66
67        // Do the job, setting result as needed
68
69        // Get the file parameter
70        $file = required_param('file', PARAM_PATH);
71        $file = $CFG->dirroot . $file;
72        // File must be under $CFG->wwwroot and
73        // under one db directory (simple protection)
74        if (substr($file, 0, strlen($CFG->dirroot)) == $CFG->dirroot &&
75            substr(dirname($file), -2, 2) == 'db') {
76            // Everything is ok. Load the file to memory
77            $this->output = file_get_contents($file);
78        } else {
79            // Switch to HTML and error
80            $this->does_generate = ACTION_GENERATE_HTML;
81            $this->errormsg = 'File not viewable (' . $file .')';
82            $result = false;
83        }
84
85        // Return ok if arrived here
86        return $result;
87    }
88}
89
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