Proyectos de Subversion Moodle

<?php

// This file is part of the Contact Form plugin for Moodle - https://moodle.org/

//

// Contact Form 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.

//

// Contact Form 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 Contact Form.  If not, see <https://www.gnu.org/licenses/>.

/**

 * This plugin for Moodle is used to send emails through a web form.

 *

 * @package    local_contact

 * @copyright  2016-2024 TNG Consulting Inc. - www.tngconsulting.ca

 * @author     Michael Milette

 * @license    https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

require_once('../../config.php');

require_once($CFG->dirroot . '/local/contact/classes/local_contact.php');

if (empty(get_local_referer(false))) {

    $PAGE->set_url('/local/contact/index.php');

} else {

    $PAGE->set_url(get_local_referer(false));

}

// If we require user to be logged in.

if (!empty(get_config('local_contact', 'loginrequired'))) {

    // Log them in and then redirect them back to the form.

    if (!isloggedin() || isguestuser()) {

        // Set message that session has timed out.

        $SESSION->has_timed_out = 1;

        require_login();

    }

}

$context = context_system::instance();

$PAGE->set_context($context);

$PAGE->set_heading(format_text($SITE->fullname, FORMAT_HTML, ['context' => $context, 'escape' => false]));

$PAGE->set_pagelayout('standard');

$PAGE->set_title(get_string('confirmationpage', 'local_contact'));

$PAGE->navbar->add('');

$contact = new local_contact();

if ($contact->isspambot) {

    header('HTTP/1.0 403 Forbidden');

    if ($CFG->debugdisplay == 1 || is_siteadmin()) {

        die(get_string('forbidden', 'local_contact') . '. ' . $contact->errmsg);

    } else {

        die(get_string('forbidden', 'local_contact')) . '.';

    }

}

// Display page header.

echo $OUTPUT->header();

// Determine the recipient's name and email address.

// The default recipient is the Moodle site's support contact. This will

// be used if no recipient was specified or if the recipient is unknown.

$name = trim($CFG->supportname ?? '');

$email = trim($CFG->supportemail ?? '');

// Handle recipient alias.

// If the form includes a recipient's alias, search the plugin's recipient list settings for a name and email address.

$recipient = trim(optional_param('recipient', '', PARAM_TEXT));

if (!empty($recipient)) {

    $lines = explode("\n", get_config('local_contact', 'recipient_list'));

    foreach ($lines as $linenumbe => $line) {

        $line = trim($line ?? '');

        if (empty($line)) { // Blank line.

            continue;

        }

        $thisrecipient = explode('|', $line);

        // 0 = alias, 1 = email address, 2 = name.

        if (count($thisrecipient) == 3) {

            // Trim leading and trailing spaces from each of the 3 parameters.

            $thisrecipient = array_map('trim', $thisrecipient);

            // See if this alias matches the one we are looking for.

            if ($thisrecipient[0] == $recipient && !empty($thisrecipient[1]) && !empty($thisrecipient[2])) {

                $email = $thisrecipient[1];

                $name = $thisrecipient[2];

                break;

            }

        }

    }

}

// Test for ReCAPTCHA.

// ReCAPTCHA is never required for logged-in non-guest users.

if (!isloggedin() || isguestuser()) {

    // Is ReCAPTCHA configured in Moodle?

    if (

        !empty($CFG->recaptchaprivatekey)

        && !empty($CFG->recaptchapublickey)

        && empty(get_config('local_contact', 'norecaptcha'))

    ) {

        // If so, ensure that it was filled correctly and submitted with the form.

        if (file_exists($CFG->libdir . '/recaptchalib_v2.php')) {

            // For reCAPTCHA 2.0.

            require_once($CFG->libdir . '/recaptchalib_v2.php');

            $response = recaptcha_check_response(

                RECAPTCHA_VERIFY_URL,

                $CFG->recaptchaprivatekey,

                getremoteaddr(),

                optional_param('g-recaptcha-response', '', PARAM_TEXT)

            );

            $resp = new stdClass();

            $resp->is_valid = $response['isvalid'];

            if (!$resp->is_valid) {

                $resp->error = $response['error'];

            }

        } else {

            // For reCAPTCHA 1.0.

            $resp = recaptcha_check_answer(

                $CFG->recaptchaprivatekey,

                $_SERVER["REMOTE_ADDR"],

                optional_param('recaptcha_challenge_field', '', PARAM_TEXT),

                optional_param('recaptcha_response_field', '', PARAM_TEXT)

            );

        }

        if (!$resp->is_valid) {

            // Display error message if CAPTCHA was entered incorrectly.

            echo '<h3>' . get_string('missingrecaptchachallengefield') . '</h3>';

            echo '<p>' . get_string('recaptcha_help', 'auth')

                . ($CFG->debugdisplay == 1 ? ' (' .  $resp->error . ')' : '') . '</p>';

            echo '<button type="button" onclick="history.back();">' . get_string('incorrectpleasetryagain', 'auth') . '</a>';

            // Display page footer.

            echo $OUTPUT->footer();

            die;

        }

    }

}

// Send the message.

if ($contact->sendmessage($email, $name)) {

    // Share a gratitude and Say Thank You! Your user will love to know their message was sent.

    echo '<h3>' . get_string('eventmessagesent', 'message') . '</h3>';

    echo '<p>' . get_string('confirmationmessage', 'local_contact') . '</p>';

} else {

    // Oh no! What are the chances. Looks like we failed to meet user expectations (message not sent).

    echo '<h3>' . get_string('errorsendingtitle', 'local_contact') . '</h3>';

    echo '<p>' . get_string('errorsending', 'local_contact') . '</p>';

}

// Determine the URL of the Continue button after the form has been submitted.

// If a 'referrer' parameter is provided and is a valid URL on the same site, use it.

// If not, if the course ID is the same as the site ID, set the button to the home page.

// Otherwise, it tries to return to the page where the form was submitted from.

// If it can't find such a page, it redirects to the course page.

// Finally, it outputs a continue button with the determined URL.

$continueurl = optional_param('referrer', '', PARAM_URL);

// Only allow continue to relative or absolute URLs on this site.

if (!(stripos($continueurl, $CFG->wwwroot) === 0 || substr($continueurl, 0, 1) != '/' || substr($continueurl, 0, 1) != '.')) {

    $continueurl = '';

}

if (empty($continueurl)) {

    if ($PAGE->course->id == SITEID) {

        // If coming from a site page, continue to the home page.

        $continueurl = $CFG->wwwroot;

    } else { // If coming from a course page.

        // See if we can return to the page from where the form was submitted.

        $continueurl = get_local_referer(false);

        if (empty($continueurl)) {

            // If the referrer was not available, go to the course page.

            $continueurl = new moodle_url('/course/view.php', ['id' => $PAGE->course->id]);

        }

    }

}

echo $OUTPUT->continue_button($continueurl);

// Display page footer.

echo $OUTPUT->footer();