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<?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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* Render a page containing a simple form which reposts to self via JS.
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*
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* The purpose of this form is to resend a cross-site request to self, which allows the browsers to include the Moodle
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* session cookie alongside the original POST data, allowing LTI flows to function despite browsers blocking
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* cross-site cookies.
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*
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* @copyright 2021 Cengage
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* @package mod_lti
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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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namespace mod_lti\output;
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defined('MOODLE_INTERNAL') || die;
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require_once($CFG->dirroot.'/mod/lti/locallib.php');
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use renderable;
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use templatable;
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use renderer_base;
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use stdClass;
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/**
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* Render a page containing a simple form which reposts to self via JS.
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*
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* The purpose of this form is to resend a cross-site request to self, which allows the browsers to include the Moodle
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* session cookie alongside the original POST data, allowing LTI flows to function despite browsers blocking
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* cross-site cookies.
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*
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* @copyright 2021 Cengage
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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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class repost_crosssite_page implements renderable, templatable {
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/** @var array POST params. */
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protected $params;
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/** @var string URL to repost to. */
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protected string $url;
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/**
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* Constructor
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*
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* @param string $url moodle URL to repost to
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* @param array $post the POST params to be re-posted
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*/
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public function __construct(string $url, array $post) {
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$this->params = array_map(function($k) use ($post) {
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return ["key" => $k, "value" => $post[$k]];
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}, array_keys($post));
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$this->url = $url;
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}
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/**
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* Export this data so it can be used as the context for a mustache template.
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*
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* @param renderer_base $output The renderer
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* @return stdClass Data to be used by the template
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*/
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public function export_for_template(renderer_base $output) {
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$renderdata = new stdClass();
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$renderdata->url = $this->url;
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$renderdata->params = $this->params;
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return $renderdata;
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}
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}
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