Merge branch '68137-master-prevent-removing-all-dots-in-filename' of https://github...
[moodle.git] / my / 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 * My Moodle -- a user's personal dashboard
19 *
20 * This file contains common functions for the dashboard and profile pages.
21 *
22 * @package moodlecore
23 * @subpackage my
24 * @copyright 2010 Remote-Learner.net
25 * @author Hubert Chathi <hubert@remote-learner.net>
26 * @author Olav Jordan <olav.jordan@remote-learner.net>
27 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
28 */
29
a9637e7d 30define('MY_PAGE_PUBLIC', 0);
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31define('MY_PAGE_PRIVATE', 1);
32
33require_once("$CFG->libdir/blocklib.php");
34
a9637e7d 35/*
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36 * For a given user, this returns the $page information for their My Moodle page
37 *
38 */
39function my_get_page($userid, $private=MY_PAGE_PRIVATE) {
40 global $DB, $CFG;
41
b8fa1826 42 if (empty($CFG->forcedefaultmymoodle) && $userid) { // Ignore custom My Moodle pages if admin has forced them
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43 // Does the user have their own page defined? If so, return it.
44 if ($customised = $DB->get_record('my_pages', array('userid' => $userid, 'private' => $private))) {
45 return $customised;
46 }
47 }
48
49 // Otherwise return the system default page
50 return $DB->get_record('my_pages', array('userid' => null, 'name' => '__default', 'private' => $private));
51}
52
53
54/*
55 * This copies a system default page to the current user
56 *
57 */
58function my_copy_page($userid, $private=MY_PAGE_PRIVATE, $pagetype='my-index') {
59 global $DB;
60
56af0fbd 61 if ($customised = $DB->get_record('my_pages', array('userid' => $userid, 'private' => $private))) {
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62 return $customised; // We're done!
63 }
64
65 // Get the system default page
66 if (!$systempage = $DB->get_record('my_pages', array('userid' => null, 'private' => $private))) {
67 return false; // error
68 }
69
70 // Clone the basic system page record
71 $page = clone($systempage);
72 unset($page->id);
73 $page->userid = $userid;
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74 $page->id = $DB->insert_record('my_pages', $page);
75
03d9401e 76 // Clone ALL the associated blocks as well
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77 $systemcontext = context_system::instance();
78 $usercontext = context_user::instance($userid);
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79
80 $blockinstances = $DB->get_records('block_instances', array('parentcontextid' => $systemcontext->id,
81 'pagetypepattern' => $pagetype,
82 'subpagepattern' => $systempage->id));
34c9d28e 83 $newblockinstanceids = [];
03d9401e 84 foreach ($blockinstances as $instance) {
ad5c3230 85 $originalid = $instance->id;
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86 unset($instance->id);
87 $instance->parentcontextid = $usercontext->id;
88 $instance->subpagepattern = $page->id;
557554f9 89 $instance->timecreated = time();
90 $instance->timemodified = $instance->timecreated;
a9637e7d 91 $instance->id = $DB->insert_record('block_instances', $instance);
34c9d28e 92 $newblockinstanceids[$originalid] = $instance->id;
bf0f06b1 93 $blockcontext = context_block::instance($instance->id); // Just creates the context record
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94 $block = block_instance($instance->blockname, $instance);
95 if (!$block->instance_copy($originalid)) {
96 debugging("Unable to copy block-specific data for original block instance: $originalid
97 to new block instance: $instance->id", DEBUG_DEVELOPER);
98 }
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99 }
100
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101 // Clone block position overrides.
102 if ($blockpositions = $DB->get_records('block_positions',
103 ['subpage' => $systempage->id, 'pagetype' => $pagetype, 'contextid' => $systemcontext->id])) {
104 foreach ($blockpositions as &$positions) {
105 $positions->subpage = $page->id;
106 $positions->contextid = $usercontext->id;
107 if (array_key_exists($positions->blockinstanceid, $newblockinstanceids)) {
108 // For block instances that were defined on the default dashboard and copied to the user dashboard
109 // use the new blockinstanceid.
110 $positions->blockinstanceid = $newblockinstanceids[$positions->blockinstanceid];
111 }
112 unset($positions->id);
113 }
114 $DB->insert_records('block_positions', $blockpositions);
115 }
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116
117 return $page;
118}
119
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120/*
121 * For a given user, this deletes their My Moodle page and returns them to the system default.
122 *
123 * @param int $userid the id of the user whose page should be reset
124 * @param int $private either MY_PAGE_PRIVATE or MY_PAGE_PUBLIC
125 * @param string $pagetype either my-index or user-profile
126 * @return mixed system page, or false on error
127 */
128function my_reset_page($userid, $private=MY_PAGE_PRIVATE, $pagetype='my-index') {
129 global $DB, $CFG;
130
131 $page = my_get_page($userid, $private);
132 if ($page->userid == $userid) {
133 $context = context_user::instance($userid);
134 if ($blocks = $DB->get_records('block_instances', array('parentcontextid' => $context->id,
135 'pagetypepattern' => $pagetype))) {
136 foreach ($blocks as $block) {
137 if (is_null($block->subpagepattern) || $block->subpagepattern == $page->id) {
138 blocks_delete_instance($block);
139 }
140 }
141 }
34c9d28e 142 $DB->delete_records('block_positions', ['subpage' => $page->id, 'pagetype' => $pagetype, 'contextid' => $context->id]);
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143 $DB->delete_records('my_pages', array('id' => $page->id));
144 }
145
146 // Get the system default page
147 if (!$systempage = $DB->get_record('my_pages', array('userid' => null, 'private' => $private))) {
148 return false; // error
149 }
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150
151 // Trigger dashboard has been reset event.
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152 $eventparams = array(
153 'context' => context_user::instance($userid),
154 'other' => array(
155 'private' => $private,
156 'pagetype' => $pagetype,
157 ),
158 );
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159 $event = \core\event\dashboard_reset::create($eventparams);
160 $event->trigger();
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161 return $systempage;
162}
163
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164/**
165 * Resets the page customisations for all users.
166 *
167 * @param int $private Either MY_PAGE_PRIVATE or MY_PAGE_PUBLIC.
168 * @param string $pagetype Either my-index or user-profile.
169 * @return void
170 */
171function my_reset_page_for_all_users($private = MY_PAGE_PRIVATE, $pagetype = 'my-index') {
172 global $DB;
173
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174 // This may take a while. Raise the execution time limit.
175 core_php_time_limit::raise();
176
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177 // Find all the user pages and all block instances in them.
178 $sql = "SELECT bi.id
179 FROM {my_pages} p
180 JOIN {context} ctx ON ctx.instanceid = p.userid AND ctx.contextlevel = :usercontextlevel
181 JOIN {block_instances} bi ON bi.parentcontextid = ctx.id AND
182 bi.pagetypepattern = :pagetypepattern AND
183 (bi.subpagepattern IS NULL OR bi.subpagepattern = " . $DB->sql_concat("''", 'p.id') . ")
184 WHERE p.private = :private";
185 $params = array('private' => $private,
186 'usercontextlevel' => CONTEXT_USER,
187 'pagetypepattern' => $pagetype);
188 $blockids = $DB->get_fieldset_sql($sql, $params);
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189
190 // Wrap the SQL queries in a transaction.
191 $transaction = $DB->start_delegated_transaction();
192
193 // Delete the block instances.
194 if (!empty($blockids)) {
195 blocks_delete_instances($blockids);
196 }
197
198 // Finally delete the pages.
17c78cce 199 $DB->delete_records_select('my_pages', 'userid IS NOT NULL AND private = :private', ['private' => $private]);
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200
201 // We should be good to go now.
202 $transaction->allow_commit();
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203
204 // Trigger dashboard has been reset event.
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205 $eventparams = array(
206 'context' => context_system::instance(),
207 'other' => array(
208 'private' => $private,
209 'pagetype' => $pagetype,
210 ),
211 );
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212 $event = \core\event\dashboards_reset::create($eventparams);
213 $event->trigger();
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214}
215
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216class my_syspage_block_manager extends block_manager {
217 // HACK WARNING!
218 // TODO: figure out a better way to do this
219 /**
220 * Load blocks using the system context, rather than the user's context.
221 *
222 * This is needed because the My Moodle pages set the page context to the
223 * user's context for access control, etc. But the blocks for the system
224 * pages are stored in the system context.
225 */
226 public function load_blocks($includeinvisible = null) {
227 $origcontext = $this->page->context;
bf0f06b1 228 $this->page->context = context_system::instance();
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229 parent::load_blocks($includeinvisible);
230 $this->page->context = $origcontext;
231 }
232}