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See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 3.9.x will end* 10 May 2021 (12 months).
  • Bug fixes for security issues in 3.9.x will end* 8 May 2023 (36 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * @package    tool_xmldb
 * @copyright  2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

/**
 * Main xmldb action clasee
 *
 * Main xmldb action class. It implements all the basic
 * functionalities to be shared by each action.
 *
 * @package    tool_xmldb
 * @copyright  2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class XMLDBAction {

    /** @var bool Type of value returned by the invoke method, ACTION_GENERATE_HTML have contents to show, set by each specialized invoke*/
    protected $does_generate;

    /** @var string Title of the Action (class name, by default), set by parent init automatically*/
    protected $title;

    /** @var string Strings used by the action set by each specialized init, calling loadStrings*/
    protected $str;

    /** @var string  Output of the action, set by each specialized invoke, get with getOutput*/
    protected $output;

    /** @var string Last Error produced. Check when any invoke returns false, get with getError*/
    protected $errormsg;

    /** @var string Action to execute at the end of the invoke script*/
    protected $postaction;

    /** @var bool Actions must be protected by sesskey mechanism*/
    protected $sesskey_protected;

> /** @var mixed */ /** > protected $subaction; * Constructor > */ > /** @var bool Set own core attributes. */ function __construct() { > protected $can_subaction; $this->init(); >
} /** * Init method, every subclass will have its own, * always calling the parent one */ function init() { $this->does_generate = ACTION_NONE; $this->title = strtolower(get_class($this)); $this->str = array(); $this->output = NULL; $this->errormsg = NULL; $this->subaction = NULL; $this->sesskey_protected = true; } /** * Returns the type of output of the file * @return bool */ function getDoesGenerate() { return $this->does_generate; } /** * getError method, returns the last error string. * Used if the invoke() methods returns false * @return string */ function getError() { return $this->errormsg; } /** * getOutput method, returns the output generated by the action. * Used after execution of the invoke() methods if they return true * @return string */ function getOutput() { return $this->output; } /** * getPostAction method, returns the action to launch after executing * another one * @return string */ function getPostAction() { return $this->postaction; } /** * getTitle method returns the title of the action (that is part * of the $str array attribute * @return string */ function getTitle() { return $this->str['title']; } /** * loadStrings method, loads the required strings specified in the * array parameter * @param string[] $strings */ function loadStrings($strings) { // Load some commonly used strings if (get_string_manager()->string_exists($this->title, 'tool_xmldb')) { $this->str['title'] = get_string($this->title, 'tool_xmldb'); } else { $this->str['title'] = $this->title; } // Now process the $strings array loading it in the $str atribute if ($strings) { foreach ($strings as $key => $module) { $this->str[$key] = get_string($key, $module); } } } /** * main invoke method, it sets the postaction attribute * if possible and checks sesskey_protected if needed */ function invoke() { global $SESSION; // Sesskey protection if ($this->sesskey_protected) { require_sesskey(); } // If we are used any dir, save it in the lastused session object // Some actions can use it to perform positioning if ($lastused = optional_param ('dir', NULL, PARAM_PATH)) { $SESSION->lastused = $lastused; } $this->postaction = optional_param ('postaction', NULL, PARAM_ALPHAEXT); // Avoid being recursive if ($this->title == $this->postaction) { $this->postaction = NULL; } } /** * launch method, used to easily call invoke methods between actions * @param string $action * @return mixed */ function launch($action) { global $CFG; // Get the action path and invoke it $actionsroot = "$CFG->dirroot/$CFG->admin/tool/xmldb/actions"; $actionclass = $action . '.class.php'; $actionpath = "$actionsroot/$action/$actionclass"; // Load and invoke the proper action $result = false; if (file_exists($actionpath) && is_readable($actionpath)) { require_once($actionpath); if ($xmldb_action = new $action) { $result = $xmldb_action->invoke(); if ($result) { if ($xmldb_action->does_generate != ACTION_NONE && $xmldb_action->getOutput()) { $this->does_generate = $xmldb_action->does_generate; $this->title = $xmldb_action->title; $this->str = $xmldb_action->str; $this->output .= $xmldb_action->getOutput(); } } else { $this->errormsg = $xmldb_action->getError(); } } else { $this->errormsg = "Error: cannot instantiate class (actions/$action/$actionclass)"; } } else { $this->errormsg = "Error: wrong action specified ($action)"; } return $result; } /** * This function will generate the PHP code needed to * implement the upgrade_xxxx_savepoint() php calls in * upgrade code generated from the editor. It's used by * the view_structure_php and view_table_php actions * * @param xmldb_structure structure object containing all the info * @return string PHP code to be used to mark a reached savepoint */ function upgrade_savepoint_php($structure) { global $CFG; // NOTE: $CFG->admin !== 'admin' is not supported in XMLDB editor, sorry. $path = $structure->getPath(); $plugintype = 'error'; if ($path === 'lib/db') { $plugintype = 'lib'; $pluginname = null; } else { $path = dirname($path); $pluginname = basename($path); $path = dirname($path); $plugintypes = core_component::get_plugin_types(); foreach ($plugintypes as $type => $fulldir) { if ($CFG->dirroot.'/'.$path === $fulldir) { $plugintype = $type; break; } } } $result = ''; switch ($plugintype ) { case 'lib': // has own savepoint function $result = XMLDB_LINEFEED . ' // Main savepoint reached.' . XMLDB_LINEFEED . ' upgrade_main_savepoint(true, XXXXXXXXXX);' . XMLDB_LINEFEED; break; case 'mod': // has own savepoint function $result = XMLDB_LINEFEED . ' // ' . ucfirst($pluginname) . ' savepoint reached.' . XMLDB_LINEFEED . ' upgrade_mod_savepoint(true, XXXXXXXXXX, ' . "'$pluginname'" . ');' . XMLDB_LINEFEED; break; case 'block': // has own savepoint function $result = XMLDB_LINEFEED . ' // ' . ucfirst($pluginname) . ' savepoint reached.' . XMLDB_LINEFEED . ' upgrade_block_savepoint(true, XXXXXXXXXX, ' . "'$pluginname'" . ');' . XMLDB_LINEFEED; break; default: // rest of plugins $result = XMLDB_LINEFEED . ' // ' . ucfirst($pluginname) . ' savepoint reached.' . XMLDB_LINEFEED . ' upgrade_plugin_savepoint(true, XXXXXXXXXX, ' . "'$plugintype'" . ', ' . "'$pluginname'" . ');' . XMLDB_LINEFEED; } return $result; } }