338 lines
13 KiB
PHP
338 lines
13 KiB
PHP
<?php
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// This file is part of the customcert module for 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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* This file contains the customcert element digitial signature's core interaction API.
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*
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* @package customcertelement_digitalsignature
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* @copyright 2017 Mark Nelson <markn@moodle.com>
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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 customcertelement_digitalsignature;
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defined('MOODLE_INTERNAL') || die();
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/**
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* The customcert element digital signature's core interaction API.
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*
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* @package customcertelement_digitalsignature
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* @copyright 2017 Mark Nelson <markn@moodle.com>
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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 element extends \customcertelement_image\element {
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/**
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* @var array The file manager options for the certificate.
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*/
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protected $signaturefilemanageroptions = array();
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/**
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* Constructor.
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*
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* @param \stdClass $element the element data
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*/
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public function __construct($element) {
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global $COURSE;
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$this->signaturefilemanageroptions = [
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'maxbytes' => $COURSE->maxbytes,
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'subdirs' => 1,
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'accepted_types' => ['.crt']
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];
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parent::__construct($element);
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}
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/**
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* This function renders the form elements when adding a customcert element.
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*
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* @param \mod_customcert\edit_element_form $mform the edit_form instance
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*/
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public function render_form_elements($mform) {
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$mform->addElement('select', 'fileid', get_string('image', 'customcertelement_image'), self::get_images());
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$mform->addElement('select', 'signaturefileid', get_string('digitalsignature', 'customcertelement_digitalsignature'),
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self::get_signatures());
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$mform->addElement('text', 'signaturename', get_string('signaturename', 'customcertelement_digitalsignature'));
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$mform->setType('signaturename', PARAM_TEXT);
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$mform->setDefault('signaturename', '');
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$mform->addElement('passwordunmask', 'signaturepassword',
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get_string('signaturepassword', 'customcertelement_digitalsignature'));
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$mform->setType('signaturepassword', PARAM_TEXT);
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$mform->setDefault('signaturepassword', '');
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$mform->addElement('text', 'signaturelocation', get_string('signaturelocation', 'customcertelement_digitalsignature'));
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$mform->setType('signaturelocation', PARAM_TEXT);
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$mform->setDefault('signaturelocation', '');
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$mform->addElement('text', 'signaturereason', get_string('signaturereason', 'customcertelement_digitalsignature'));
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$mform->setType('signaturereason', PARAM_TEXT);
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$mform->setDefault('signaturereason', '');
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$mform->addElement('text', 'signaturecontactinfo',
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get_string('signaturecontactinfo', 'customcertelement_digitalsignature'));
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$mform->setType('signaturecontactinfo', PARAM_TEXT);
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$mform->setDefault('signaturecontactinfo', '');
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$mform->addElement('text', 'width', get_string('width', 'customcertelement_image'), array('size' => 10));
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$mform->setType('width', PARAM_INT);
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$mform->setDefault('width', 0);
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$mform->addHelpButton('width', 'width', 'customcertelement_image');
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$mform->addElement('text', 'height', get_string('height', 'customcertelement_image'), array('size' => 10));
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$mform->setType('height', PARAM_INT);
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$mform->setDefault('height', 0);
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$mform->addHelpButton('height', 'height', 'customcertelement_image');
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if (get_config('customcert', 'showposxy')) {
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\mod_customcert\element_helper::render_form_element_position($mform);
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}
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$mform->addElement('filemanager', 'customcertimage', get_string('uploadimage', 'customcert'), '',
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$this->filemanageroptions);
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$mform->addElement('filemanager', 'digitalsignature',
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get_string('uploaddigitalsignature', 'customcertelement_digitalsignature'), '',
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$this->signaturefilemanageroptions);
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}
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/**
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* Handles saving the form elements created by this element.
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* Can be overridden if more functionality is needed.
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*
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* @param \stdClass $data the form data
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* @return bool true of success, false otherwise.
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*/
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public function save_form_elements($data) {
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global $COURSE, $SITE;
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// Set the context.
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if ($COURSE->id == $SITE->id) {
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$context = \context_system::instance();
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} else {
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$context = \context_course::instance($COURSE->id);
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}
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// Handle file uploads.
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\mod_customcert\certificate::upload_files($data->customcertimage, $context->id);
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// Handle file certificate uploads.
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\mod_customcert\certificate::upload_files($data->digitalsignature, $context->id, 'signature');
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return parent::save_form_elements($data);
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}
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/**
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* This will handle how form data will be saved into the data column in the
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* customcert_elements table.
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*
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* @param \stdClass $data the form data
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* @return string the json encoded array
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*/
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public function save_unique_data($data) {
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$arrtostore = [
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'signaturename' => $data->signaturename,
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'signaturepassword' => $data->signaturepassword,
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'signaturelocation' => $data->signaturelocation,
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'signaturereason' => $data->signaturereason,
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'signaturecontactinfo' => $data->signaturecontactinfo,
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'width' => !empty($data->width) ? (int) $data->width : 0,
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'height' => !empty($data->height) ? (int) $data->height : 0
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];
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// Array of data we will be storing in the database.
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$fs = get_file_storage();
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if (!empty($data->fileid)) {
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if ($file = $fs->get_file_by_id($data->fileid)) {
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$arrtostore += [
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'contextid' => $file->get_contextid(),
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'filearea' => $file->get_filearea(),
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'itemid' => $file->get_itemid(),
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'filepath' => $file->get_filepath(),
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'filename' => $file->get_filename(),
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];
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}
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}
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if (!empty($data->signaturefileid)) {
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if ($signaturefile = $fs->get_file_by_id($data->signaturefileid)) {
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$arrtostore += [
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'signaturecontextid' => $signaturefile->get_contextid(),
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'signaturefilearea' => $signaturefile->get_filearea(),
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'signatureitemid' => $signaturefile->get_itemid(),
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'signaturefilepath' => $signaturefile->get_filepath(),
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'signaturefilename' => $signaturefile->get_filename()
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];
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}
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}
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return json_encode($arrtostore);
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}
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/**
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* Handles rendering the element on the pdf.
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*
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* @param \pdf $pdf the pdf object
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* @param bool $preview true if it is a preview, false otherwise
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* @param \stdClass $user the user we are rendering this for
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*/
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public function render($pdf, $preview, $user) {
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// If there is no element data, we have nothing to display.
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if (empty($this->get_data())) {
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return;
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}
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$imageinfo = json_decode($this->get_data());
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// If there is no file, we have nothing to display.
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if (empty($imageinfo->filename)) {
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return;
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}
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// If there is no signature file, we have nothing to display.
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if (empty($imageinfo->signaturefilename)) {
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return;
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}
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if ($file = $this->get_file()) {
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$location = make_request_directory() . '/target';
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$file->copy_content_to($location);
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$mimetype = $file->get_mimetype();
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if ($mimetype == 'image/svg+xml') {
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$pdf->ImageSVG($location, $this->get_posx(), $this->get_posy(), $imageinfo->width, $imageinfo->height);
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} else {
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$pdf->Image($location, $this->get_posx(), $this->get_posy(), $imageinfo->width, $imageinfo->height);
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}
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}
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if ($signaturefile = $this->get_signature_file()) {
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$location = make_request_directory() . '/target';
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$signaturefile->copy_content_to($location);
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$info = [
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'Name' => $imageinfo->signaturename,
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'Location' => $imageinfo->signaturelocation,
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'Reason' => $imageinfo->signaturereason,
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'ContactInfo' => $imageinfo->signaturecontactinfo
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];
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$pdf->setSignature('file://' . $location, '', $imageinfo->signaturepassword, '', 2, $info);
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$pdf->setSignatureAppearance($this->get_posx(), $this->get_posy(), $imageinfo->width, $imageinfo->height);
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}
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}
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/**
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* Sets the data on the form when editing an element.
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*
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* @param \mod_customcert\edit_element_form $mform the edit_form instance
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*/
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public function definition_after_data($mform) {
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global $COURSE, $SITE;
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// Set the context.
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if ($COURSE->id == $SITE->id) {
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$context = \context_system::instance();
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} else {
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$context = \context_course::instance($COURSE->id);
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}
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if (!empty($this->get_data())) {
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$imageinfo = json_decode($this->get_data());
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$element = $mform->getElement('signaturename');
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$element->setValue($imageinfo->signaturename);
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$element = $mform->getElement('signaturepassword');
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$element->setValue($imageinfo->signaturepassword);
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$element = $mform->getElement('signaturelocation');
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$element->setValue($imageinfo->signaturelocation);
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$element = $mform->getElement('signaturereason');
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$element->setValue($imageinfo->signaturereason);
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$element = $mform->getElement('signaturecontactinfo');
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$element->setValue($imageinfo->signaturecontactinfo);
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if (!empty($imageinfo->signaturefilename)) {
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if ($signaturefile = $this->get_signature_file()) {
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$element = $mform->getElement('signaturefileid');
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$element->setValue($signaturefile->get_id());
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}
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}
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}
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// Editing existing instance - copy existing files into draft area.
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$draftitemid = file_get_submitted_draft_itemid('digitalsignature');
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file_prepare_draft_area($draftitemid, $context->id, 'mod_customcert', 'signature', 0,
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$this->signaturefilemanageroptions);
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$element = $mform->getElement('digitalsignature');
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$element->setValue($draftitemid);
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parent::definition_after_data($mform);
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}
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/**
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* Return the list of possible images to use.
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*
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* @return array the list of images that can be used
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*/
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public static function get_signatures() {
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global $COURSE;
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// Create file storage object.
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$fs = get_file_storage();
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// The array used to store the digital signatures.
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$arrfiles = array();
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// Loop through the files uploaded in the system context.
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if ($files = $fs->get_area_files(\context_system::instance()->id, 'mod_customcert', 'signature', false,
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'filename', false)) {
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foreach ($files as $hash => $file) {
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$arrfiles[$file->get_id()] = $file->get_filename();
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}
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}
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// Loop through the files uploaded in the course context.
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if ($files = $fs->get_area_files(\context_course::instance($COURSE->id)->id, 'mod_customcert', 'signature', false,
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'filename', false)) {
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foreach ($files as $hash => $file) {
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$arrfiles[$file->get_id()] = $file->get_filename();
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}
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}
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\core_collator::asort($arrfiles);
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$arrfiles = array('0' => get_string('nosignature', 'customcertelement_digitalsignature')) + $arrfiles;
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return $arrfiles;
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}
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/**
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* Fetch stored file.
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*
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* @return \stored_file|bool stored_file instance if exists, false if not
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*/
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public function get_signature_file() {
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$imageinfo = json_decode($this->get_data());
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$fs = get_file_storage();
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return $fs->get_file($imageinfo->signaturecontextid, 'mod_customcert', $imageinfo->signaturefilearea,
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$imageinfo->signatureitemid, $imageinfo->signaturefilepath, $imageinfo->signaturefilename);
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}
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}
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