weekly release 3.6dev
[moodle.git] / admin / tool / dataprivacy / lib.php
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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 * Data privacy plugin library
19 * @package tool_dataprivacy
20 * @copyright 2018 onwards Jun Pataleta
21 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
22 */
23
24use core_user\output\myprofile\tree;
25
26defined('MOODLE_INTERNAL') || die();
27
28/**
29 * Add nodes to myprofile page.
30 *
31 * @param tree $tree Tree object
32 * @param stdClass $user User object
33 * @param bool $iscurrentuser
34 * @param stdClass $course Course object
35 * @return bool
36 * @throws coding_exception
37 * @throws dml_exception
38 * @throws moodle_exception
39 */
40function tool_dataprivacy_myprofile_navigation(tree $tree, $user, $iscurrentuser, $course) {
41 global $PAGE, $USER;
42
43 // Get the Privacy and policies category.
44 if (!array_key_exists('privacyandpolicies', $tree->__get('categories'))) {
45 // Create the category.
46 $categoryname = get_string('privacyandpolicies', 'admin');
47 $category = new core_user\output\myprofile\category('privacyandpolicies', $categoryname, 'contact');
48 $tree->add_category($category);
49 } else {
50 // Get the existing category.
51 $category = $tree->__get('categories')['privacyandpolicies'];
52 }
53
54 // Contact data protection officer link.
55 if (\tool_dataprivacy\api::can_contact_dpo() && $iscurrentuser) {
56 $renderer = $PAGE->get_renderer('tool_dataprivacy');
57 $content = $renderer->render_contact_dpo_link($USER->email);
58 $node = new core_user\output\myprofile\node('privacyandpolicies', 'contactdpo', null, null, null, $content);
59 $category->add_node($node);
60 $PAGE->requires->js_call_amd('tool_dataprivacy/myrequestactions', 'init');
61
62 $url = new moodle_url('/admin/tool/dataprivacy/mydatarequests.php');
63 $node = new core_user\output\myprofile\node('privacyandpolicies', 'datarequests',
64 get_string('datarequests', 'tool_dataprivacy'), null, $url);
65 $category->add_node($node);
66 }
67
68 // Add the Privacy category to the tree if it's not empty and it doesn't exist.
69 $nodes = $category->nodes;
70 if (!empty($nodes)) {
71 if (!array_key_exists('privacyandpolicies', $tree->__get('categories'))) {
72 $tree->add_category($category);
73 }
74 return true;
75 }
76
77 return false;
78}
79
80/**
81 * Fragment to add a new purpose.
82 *
83 * @param array $args The fragment arguments.
84 * @return string The rendered mform fragment.
85 */
86function tool_dataprivacy_output_fragment_addpurpose_form($args) {
87
88 $formdata = [];
89 if (!empty($args['jsonformdata'])) {
90 $serialiseddata = json_decode($args['jsonformdata']);
91 parse_str($serialiseddata, $formdata);
92 }
93
94 $persistent = new \tool_dataprivacy\purpose();
95 $mform = new \tool_dataprivacy\form\purpose(null, ['persistent' => $persistent],
96 'post', '', null, true, $formdata);
97
98 if (!empty($args['jsonformdata'])) {
99 // Show errors if data was received.
100 $mform->is_validated();
101 }
102
103 return $mform->render();
104}
105
106/**
107 * Fragment to add a new category.
108 *
109 * @param array $args The fragment arguments.
110 * @return string The rendered mform fragment.
111 */
112function tool_dataprivacy_output_fragment_addcategory_form($args) {
113
114 $formdata = [];
115 if (!empty($args['jsonformdata'])) {
116 $serialiseddata = json_decode($args['jsonformdata']);
117 parse_str($serialiseddata, $formdata);
118 }
119
120 $persistent = new \tool_dataprivacy\category();
121 $mform = new \tool_dataprivacy\form\category(null, ['persistent' => $persistent],
122 'post', '', null, true, $formdata);
123
124 if (!empty($args['jsonformdata'])) {
125 // Show errors if data was received.
126 $mform->is_validated();
127 }
128
129 return $mform->render();
130}
131
132/**
133 * Fragment to edit a context purpose and category.
134 *
135 * @param array $args The fragment arguments.
136 * @return string The rendered mform fragment.
137 */
138function tool_dataprivacy_output_fragment_context_form($args) {
139 global $PAGE;
140
141 $contextid = $args[0];
142
143 $context = \context_helper::instance_by_id($contextid);
144 $customdata = \tool_dataprivacy\form\context_instance::get_context_instance_customdata($context);
145
146 if (!empty($customdata['purposeretentionperiods'])) {
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147 $PAGE->requires->js_call_amd('tool_dataprivacy/effective_retention_period', 'init',
148 [$customdata['purposeretentionperiods']]);
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149 }
150 $mform = new \tool_dataprivacy\form\context_instance(null, $customdata);
151 return $mform->render();
152}
153
154/**
155 * Fragment to edit a contextlevel purpose and category.
156 *
157 * @param array $args The fragment arguments.
158 * @return string The rendered mform fragment.
159 */
160function tool_dataprivacy_output_fragment_contextlevel_form($args) {
161 global $PAGE;
162
163 $contextlevel = $args[0];
164 $customdata = \tool_dataprivacy\form\contextlevel::get_contextlevel_customdata($contextlevel);
165
166 if (!empty($customdata['purposeretentionperiods'])) {
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167 $PAGE->requires->js_call_amd('tool_dataprivacy/effective_retention_period', 'init',
168 [$customdata['purposeretentionperiods']]);
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169 }
170
171 $mform = new \tool_dataprivacy\form\contextlevel(null, $customdata);
172 return $mform->render();
173}
174
175/**
176 * Serves any files associated with the data privacy settings.
177 *
178 * @param stdClass $course Course object
179 * @param stdClass $cm Course module object
180 * @param context $context Context
181 * @param string $filearea File area for data privacy
182 * @param array $args Arguments
183 * @param bool $forcedownload If we are forcing the download
184 * @param array $options More options
185 * @return bool Returns false if we don't find a file.
186 */
187function tool_dataprivacy_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = array()) {
188 if ($context->contextlevel == CONTEXT_USER) {
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189 // Make sure the user is logged in.
190 require_login(null, false);
191
635c7b29 192 // Get the data request ID. This should be the first element of the $args array.
193 $itemid = $args[0];
194 // Fetch the data request object. An invalid ID will throw an exception.
195 $datarequest = new \tool_dataprivacy\data_request($itemid);
196
197 // Check if user is allowed to download it.
198 if (!\tool_dataprivacy\api::can_download_data_request_for_user($context->instanceid, $datarequest->get('requestedby'))) {
199 return false;
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200 }
201
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202 // Make the file unavailable if it has expired.
203 if (\tool_dataprivacy\data_request::is_expired($datarequest)) {
204 send_file_not_found();
205 }
206
cb775057 207 // All good. Serve the exported data.
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208 $fs = get_file_storage();
209 $relativepath = implode('/', $args);
210 $fullpath = "/$context->id/tool_dataprivacy/$filearea/$relativepath";
211 if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
212 return false;
213 }
214 send_stored_file($file, 0, 0, $forcedownload, $options);
215 } else {
216 send_file_not_found();
217 }
218}