<?php
/**
 *
 * This file is part of HESK - PHP Help Desk Software.
 *
 * (c) Copyright Klemen Stirn. All rights reserved.
 * https://www.hesk.com
 *
 * For the full copyright and license agreement information visit
 * https://www.hesk.com/eula.php
 *
 */

define('IN_SCRIPT', 1);
define('HESK_PATH', './');

// Try to detect some simple SPAM bots
if (!isset($_POST['hx']) || $_POST['hx'] != 3 || !isset($_POST['hy']) || $_POST['hy'] != '' || isset($_POST['phone'])) {
    header('HTTP/1.1 403 Forbidden');
    exit();
}

// Get all the required files and functions
require(HESK_PATH . 'hesk_settings.inc.php');
require(HESK_PATH . 'inc/common.inc.php');

// Are we in maintenance mode?
hesk_check_maintenance();

// Are we in "Knowledgebase only" mode?
hesk_check_kb_only();

hesk_load_database_functions();
require(HESK_PATH . 'inc/email_functions.inc.php');
require(HESK_PATH . 'inc/posting_functions.inc.php');
require(HESK_PATH . 'inc/htmLawed.php');

// We only allow POST requests to this file
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
    header('Location: index.php?a=add');
    exit();
}

// Check for POST requests larger than what the server can handle
if (empty($_POST) && !empty($_SERVER['CONTENT_LENGTH'])) {
    hesk_error($hesklang['maxpost']);
}

// Block obvious spammers trying to inject email headers
if (preg_match("/\n|\r|\t|%0A|%0D|%08|%09/", hesk_POST('name') . hesk_POST('subject'))) {
    header('HTTP/1.1 403 Forbidden');
    exit();
}

hesk_session_start();

// A security check - not needed here, but uncomment if you require it
# hesk_token_check();

// Prevent submitting multiple tickets by reloading submit_ticket.php page
if (isset($_SESSION['already_submitted'])) {
    hesk_forceStop();
}

// Connect to database
hesk_dbConnect();

$hesk_error_buffer = array();

// Check anti-SPAM question
if ($hesk_settings['question_use']) {
    $question = hesk_input(hesk_POST('question'));

    if (strlen($question) == 0) {
        $hesk_error_buffer['question'] = $hesklang['q_miss'];
    } elseif (strtolower($question) != strtolower($hesk_settings['question_ans'])) {
        $hesk_error_buffer['question'] = $hesklang['q_wrng'];
    } else {
        $_SESSION['c_question'] = $question;
    }
}

// Check anti-SPAM image
if ($hesk_settings['secimg_use'] && !isset($_SESSION['img_verified'])) {
    // Using ReCaptcha?
    if ($hesk_settings['recaptcha_use'] == 1) {
        require(HESK_PATH . 'inc/recaptcha/recaptchalib.php');

        $resp = recaptcha_check_answer($hesk_settings['recaptcha_private_key'],
            $_SERVER['REMOTE_ADDR'],
            hesk_POST('recaptcha_challenge_field', ''),
            hesk_POST('recaptcha_response_field', '')
        );
        if ($resp->is_valid) {
            $_SESSION['img_verified'] = true;
        } else {
            $hesk_error_buffer['mysecnum'] = $hesklang['recaptcha_error'];
        }

    } // Using ReCaptcha API v2?
    elseif ($hesk_settings['recaptcha_use'] == 2) {
        require(HESK_PATH . 'inc/recaptcha/recaptchalib_v2.php');

        $resp = null;
        $reCaptcha = new ReCaptcha($hesk_settings['recaptcha_private_key']);

        // Was there a reCAPTCHA response?
        if (isset($_POST["g-recaptcha-response"])) {
            $resp = $reCaptcha->verifyResponse($_SERVER["REMOTE_ADDR"], hesk_POST("g-recaptcha-response"));
        }

        if ($resp != null && $resp->success) {
            $_SESSION['img_verified'] = true;
        } else {
            $hesk_error_buffer['mysecnum'] = $hesklang['recaptcha_error'];
        }
    } // Using PHP generated image
    else {
        $mysecnum = intval(hesk_POST('mysecnum', 0));

        if (empty($mysecnum)) {
            $hesk_error_buffer['mysecnum'] = $hesklang['sec_miss'];
        } else {
            require(HESK_PATH . 'inc/secimg.inc.php');
            $sc = new PJ_SecurityImage($hesk_settings['secimg_sum']);
            if (isset($_SESSION['checksum']) && $sc->checkCode($mysecnum, $_SESSION['checksum'])) {
                $_SESSION['img_verified'] = true;
            } else {
                $hesk_error_buffer['mysecnum'] = $hesklang['sec_wrng'];
            }
        }
    }
}

$tmpvar['name'] = hesk_input(hesk_POST('name')) or $hesk_error_buffer['name'] = $hesklang['enter_your_name'];

$email_available = true;

if ($hesk_settings['require_email']) {
    $tmpvar['email'] = hesk_validateEmail( hesk_POST('email'), 'ERR', 0) or $hesk_error_buffer['email']=$hesklang['enter_valid_email'];
} else {
    $tmpvar['email'] = hesk_validateEmail( hesk_POST('email'), 'ERR', 0);

    // Not required, but must be valid if it is entered
    if ($tmpvar['email'] == '') {
        $email_available = false;

        if (strlen(hesk_POST('email'))) {
            $hesk_error_buffer['email'] = $hesklang['not_valid_email'];
        }

        // No need to confirm the email
        $hesk_settings['confirm_email'] = 0;
        $_POST['email2'] = '';
        $_SESSION['c_email'] = '';
        $_SESSION['c_email2'] = '';
    }
}

if ($hesk_settings['confirm_email']) {
    $tmpvar['email2'] = hesk_validateEmail(hesk_POST('email2'), 'ERR', 0) or $hesk_error_buffer['email2'] = $hesklang['confemail2'];

    // Anything entered as email confirmation?
    if ($tmpvar['email2'] != '') {
        // Do we have multiple emails?
        if ($hesk_settings['multi_eml']) {
            $tmpvar['email'] = str_replace(';', ',', $tmpvar['email']);
            $tmpvar['email2'] = str_replace(';', ',', $tmpvar['email2']);

            if (count(array_diff(explode(',', strtolower($tmpvar['email'])), explode(',', strtolower($tmpvar['email2'])))) == 0) {
                $_SESSION['c_email2'] =  hesk_POST('email2');
            }
        } // Single email address match
        elseif (!$hesk_settings['multi_eml'] && strtolower($tmpvar['email']) == strtolower($tmpvar['email2'])) {
            $_SESSION['c_email2'] =  hesk_POST('email2');
        } else {
            // Invalid match
            $tmpvar['email2'] = '';
            $_POST['email2'] = '';
            $_SESSION['c_email2'] = '';
            $_SESSION['isnotice'][] = 'email';
            $hesk_error_buffer['email2'] = $hesklang['confemaile'];
        }
    } else {
        $_SESSION['c_email2'] =  hesk_POST('email2');
    }
}

$tmpvar['category'] = intval(hesk_POST('category')) or $hesk_error_buffer['category'] = $hesklang['sel_app_cat'];

// Do we allow customer to select priority?
if ($hesk_settings['cust_urgency']) {
    $tmpvar['priority'] = intval(hesk_POST('priority'));

    // We don't allow customers select "Critical". If priority is not valid set it to "low".
    if ($tmpvar['priority'] < 1 || $tmpvar['priority'] > 3) {
        // If we are showing "Click to select" priority needs to be selected
        if ($hesk_settings['select_pri']) {
            $tmpvar['priority'] = -1;
            $hesk_error_buffer['priority'] = $hesklang['select_priority'];
        } else {
            $tmpvar['priority'] = 3;
        }
    }
} // Priority will be selected based on the category selected
else {
    $res = hesk_dbQuery("SELECT `priority` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "categories` WHERE `id`=" . intval($tmpvar['category']));
    if (hesk_dbNumRows($res) == 1) {
        $tmpvar['priority'] = intval(hesk_dbResult($res));
    } else {
        $tmpvar['priority'] = 3;
    }
}

if ($hesk_settings['require_subject'] == -1) {
    $tmpvar['subject'] = '';
} else {
    $tmpvar['subject'] = hesk_input( hesk_POST('subject') );

    if ($hesk_settings['require_subject'] == 1 && $tmpvar['subject'] == '') {
        $hesk_error_buffer['subject'] = $hesklang['enter_ticket_subject'];
    }
}

if ($hesk_settings['require_message'] == -1) {
    $tmpvar['message'] = '';
} else {
    $tmpvar['message'] = hesk_input( hesk_POST('message') );

    if ($hesk_settings['require_message'] == 1 && $tmpvar['message'] == '') {
        $hesk_error_buffer['message'] = $hesklang['enter_message'];
    }
}

// Is category a valid choice?
if ($tmpvar['category']) {
    hesk_verifyCategory();

    // Is auto-assign of tickets disabled in this category?
    if (empty($hesk_settings['category_data'][$tmpvar['category']]['autoassign'])) {
        $hesk_settings['autoassign'] = false;
    }
}

// Custom fields
$modsForHesk_settings = mfh_getSettings();
foreach ($hesk_settings['custom_fields'] as $k=>$v) {
    if ($v['use']==1 && hesk_is_custom_field_in_category($k, $tmpvar['category'])) {
        if ($v['type'] == 'checkbox') {
            $tmpvar[$k]='';

            if (isset($_POST[$k]) && is_array($_POST[$k])) {
                foreach ($_POST[$k] as $myCB) {
                    $tmpvar[$k] .= ( is_array($myCB) ? '' : hesk_input($myCB) ) . '<br />';;
                }

                $tmpvar[$k]=substr($tmpvar[$k],0,-6);
            } else {
                if ($v['req']) {
                    $hesk_error_buffer[$k]=$hesklang['fill_all'].': '.$v['name'];
                }
                $_POST[$k] = '';
            }

            $_SESSION["c_$k"]=hesk_POST_array($k);
        } elseif ($v['type'] == 'date') {
            $tmpvar[$k] = hesk_POST($k);
            $_SESSION["c_$k"] = '';

            if (preg_match("/^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])$/", $tmpvar[$k])) {
                $date = strtotime($tmpvar[$k] . ' t00:00:00');
                $dmin = strlen($v['value']['dmin']) ? strtotime($v['value']['dmin'] . ' t00:00:00') : false;
                $dmax = strlen($v['value']['dmax']) ? strtotime($v['value']['dmax'] . ' t00:00:00') : false;

                $_SESSION["c_$k"] = $tmpvar[$k];

                if ($dmin && $dmin > $date) {
                    $hesk_error_buffer[$k] = sprintf($hesklang['d_emin'], $v['name'], hesk_custom_date_display_format($dmin, $v['value']['date_format']));
                } elseif ($dmax && $dmax < $date) {
                    $hesk_error_buffer[$k] = sprintf($hesklang['d_emax'], $v['name'], hesk_custom_date_display_format($dmax, $v['value']['date_format']));
                } else {
                    $tmpvar[$k] = $date;
                }
            } else {
                if ($v['req']) {
                    $hesk_error_buffer[$k]=$hesklang['fill_all'].': '.$v['name'];
                }
            }
        } elseif ($v['type'] == 'email') {
            $tmp = $hesk_settings['multi_eml'];
            $hesk_settings['multi_eml'] = $v['value']['multiple'];
            $tmpvar[$k] = hesk_validateEmail( hesk_POST($k), 'ERR', 0);
            $hesk_settings['multi_eml'] = $tmp;

            if ($tmpvar[$k] != '') {
                $_SESSION["c_$k"] = hesk_input($tmpvar[$k]);
            } else {
                $_SESSION["c_$k"] = '';

                if ($v['req']) {
                    $hesk_error_buffer[$k] = $v['value']['multiple'] ? sprintf($hesklang['cf_noem'], $v['name']) : sprintf($hesklang['cf_noe'], $v['name']);
                }
            }
        } elseif ($v['req']) {
            $tmpvar[$k]=hesk_makeURL(nl2br(hesk_input( hesk_POST($k) )));
            if ($tmpvar[$k] == '') {
                $hesk_error_buffer[$k]=$hesklang['fill_all'].': '.$v['name'];
            }
            $_SESSION["c_$k"]=hesk_POST($k);
        } else {
            $tmpvar[$k]=hesk_makeURL(nl2br(hesk_input( hesk_POST($k) )));
            $_SESSION["c_$k"]=hesk_POST($k);
        }
    } else {
        $tmpvar[$k] = '';
    }
}

// Check bans
if ($email_available && ! isset($hesk_error_buffer['email']) && hesk_isBannedEmail($tmpvar['email']) || hesk_isBannedIP($_SERVER['REMOTE_ADDR'])) {
    hesk_error($hesklang['baned_e']);
}

// Check maximum open tickets limit
$below_limit = true;
if ($email_available && $hesk_settings['max_open'] && ! isset($hesk_error_buffer['email'])) {
    $res = hesk_dbQuery("SELECT COUNT(*) FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "tickets` WHERE `status` IN (SELECT `ID` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "statuses` WHERE `IsClosed` = 0) AND " . hesk_dbFormatEmail($tmpvar['email']));
    $num = hesk_dbResult($res);

    if ($num >= $hesk_settings['max_open']) {
        $hesk_error_buffer = array('max_open' => sprintf($hesklang['maxopen'], $num, $hesk_settings['max_open']));
        $below_limit = false;
    }
}

// If we reached max tickets let's save some resources
if ($below_limit) {
    // Generate tracking ID
    $tmpvar['trackid'] = hesk_createID();

    // Attachments
    if ($hesk_settings['attachments']['use']) {
        require_once(HESK_PATH . 'inc/attachments.inc.php');

        $attachments = array();
        $trackingID = $tmpvar['trackid'];

        $use_legacy_attachments = hesk_POST('use-legacy-attachments', 0);

        if ($use_legacy_attachments) {
            // The user went to the fallback file upload system.
            for ($i = 1; $i <= $hesk_settings['attachments']['max_number']; $i++) {
                $att = hesk_uploadFile($i);
                if ($att !== false && !empty($att)) {
                    $attachments[$i] = $att;
                }
            }
        } else {
            // The user used the new drag-and-drop system.
            $temp_attachment_ids = hesk_POST_array('attachment-ids');
            foreach ($temp_attachment_ids as $temp_attachment_id) {
                // Simply get the temp info and move it to the attachments table
                $temp_attachment = mfh_getTemporaryAttachment($temp_attachment_id);
                $attachments[] = $temp_attachment;
                mfh_deleteTemporaryAttachment($temp_attachment_id);
            }
        }
    }
    $tmpvar['attachments'] = '';
}

// If we have any errors lets store info in session to avoid re-typing everything
if (count($hesk_error_buffer)) {
    $_SESSION['iserror'] = array_keys($hesk_error_buffer);

    $_SESSION['c_name'] = hesk_POST('name');
    $_SESSION['c_email'] = hesk_POST('email');
    $_SESSION['c_priority'] = hesk_POST('priority');
    $_SESSION['c_subject'] = hesk_POST('subject');
    $_SESSION['c_message'] = hesk_POST('message');

    $tmp = '';
    foreach ($hesk_error_buffer as $error) {
        $tmp .= "<li>$error</li>\n";
    }

    // Remove any successfully uploaded attachments
    if ($below_limit && $hesk_settings['attachments']['use']) {
        hesk_removeAttachments($attachments);
    }

    $hesk_error_buffer = $hesklang['pcer'] . '<br /><br /><ul>' . $tmp . '</ul>';
    hesk_process_messages($hesk_error_buffer, 'index.php?a=add&category='.$tmpvar['category']);
}

if (!$modsForHesk_settings['rich_text_for_tickets_for_customers']) {
    $tmpvar['message'] = hesk_makeURL($tmpvar['message']);
    $tmpvar['message'] = nl2br($tmpvar['message']);
}

// Track suggested knowledgebase articles
if ($hesk_settings['kb_enable'] && $hesk_settings['kb_recommendanswers'] && isset($_POST['suggested']) && is_array($_POST['suggested'])) {
    $tmpvar['articles'] = implode(',', array_unique(array_map('intval', $_POST['suggested'])));
}

// All good now, continue with ticket creation
$tmpvar['owner'] = 0;
$tmpvar['history'] = sprintf($hesklang['thist15'], hesk_date(), $tmpvar['name']);

// Auto assign tickets if aplicable
$autoassign_owner = hesk_autoAssignTicket($tmpvar['category']);
if ($autoassign_owner) {
    $tmpvar['owner'] = $autoassign_owner['id'];
    $tmpvar['history'] .= sprintf($hesklang['thist10'], hesk_date(), $autoassign_owner['name'] . ' (' . $autoassign_owner['user'] . ')');
}

// Insert attachments
if ($hesk_settings['attachments']['use'] && !empty($attachments)) {
    foreach ($attachments as $myatt) {
        hesk_dbQuery("INSERT INTO `" . hesk_dbEscape($hesk_settings['db_pfix']) . "attachments` (`ticket_id`,`saved_name`,`real_name`,`size`) VALUES ('" . hesk_dbEscape($tmpvar['trackid']) . "','" . hesk_dbEscape($myatt['saved_name']) . "','" . hesk_dbEscape($myatt['real_name']) . "','" . intval($myatt['size']) . "')");
        $tmpvar['attachments'] .= hesk_dbInsertID() . '#' . $myatt['real_name'] . '#' . $myatt['saved_name'] . ',';
    }
}

// Set latitude and longitude
$tmpvar['latitude'] = hesk_POST('latitude');
$tmpvar['longitude'] = hesk_POST('longitude');

// Set html
$tmpvar['html'] = $modsForHesk_settings['rich_text_for_tickets_for_customers'];

// Set screen res and user agent
$tmpvar['screen_resolution_height'] = hesk_POST('screen_resolution_height', "NULL");
$tmpvar['screen_resolution_width'] = hesk_POST('screen_resolution_width', "NULL");
$tmpvar['user_agent'] = $_SERVER['HTTP_USER_AGENT'];

// Tickets from customers never have a due date
$tmpvar['due_date'] = '';

// Should the helpdesk validate emails?
$createTicket = true;
if ($modsForHesk_settings['customer_email_verification_required'] && $email_available) {
    $verifiedEmailSql = "SELECT `Email` FROM `" . hesk_dbEscape($hesk_settings['db_pfix']) . "verified_emails` WHERE `Email` = '" . hesk_dbEscape($tmpvar['email']) . "'";
    $verifiedEmailRS = hesk_dbQuery($verifiedEmailSql);
    if (hesk_dbNumRows($verifiedEmailRS) == 0) {
        //-- email has not yet been verified.
        $ticket = hesk_newTicket($tmpvar, false);

        //-- generate the activation key, which is a hash of their email address along with the current time.
        $unhashedKey = $tmpvar['email'] . time();
        $key = hash('sha512', $unhashedKey);

        $escapedEmail = hesk_dbEscape($tmpvar['email']);
        $escapedKey = hesk_dbEscape($key);
        hesk_dbQuery("INSERT INTO `" . hesk_dbEscape($hesk_settings['db_pfix']) . "pending_verification_emails` (`Email`, `ActivationKey`)
        VALUES ('" . $escapedEmail . "', '" . $escapedKey . "')");

        hesk_notifyCustomerForVerifyEmail('verify_email', $key, $modsForHesk_settings);
        $createTicket = false;
    }
}
if ($createTicket) {
    //-- email has been verified, and a ticket can be created
    $ticket = hesk_newTicket($tmpvar);

    // Notify the customer
    if ($hesk_settings['notify_new'] && $email_available) {
        hesk_notifyCustomer($modsForHesk_settings);
    }

    // Need to notify staff?
    // --> From autoassign?
    if ($tmpvar['owner'] && $autoassign_owner['notify_assigned']) {
        hesk_notifyAssignedStaff($autoassign_owner, 'ticket_assigned_to_you', $modsForHesk_settings);
    } // --> No autoassign, find and notify appropriate staff
    elseif (!$tmpvar['owner']) {
        hesk_notifyStaff('new_ticket_staff', " `notify_new_unassigned` = '1' ", $modsForHesk_settings);
    }
}

// Next ticket show suggested articles again
$_SESSION['ARTICLES_SUGGESTED'] = false;
$_SESSION['already_submitted'] = 1;

// Need email to view ticket? If yes, remember it by default
if ($hesk_settings['email_view_ticket']) {
    hesk_setcookie('hesk_myemail', $tmpvar['email'], strtotime('+1 year'));
}

// Unset temporary variables
unset($tmpvar);
hesk_cleanSessionVars('tmpvar');
hesk_cleanSessionVars('c_category');
hesk_cleanSessionVars('c_priority');
hesk_cleanSessionVars('c_subject');
hesk_cleanSessionVars('c_message');
hesk_cleanSessionVars('c_question');
hesk_cleanSessionVars('img_verified');

// Print header
require_once(HESK_PATH . 'inc/header.inc.php');

?>

<ol class="breadcrumb">
    <li><a href="<?php echo $hesk_settings['site_url']; ?>"><?php echo $hesk_settings['site_title']; ?></a></li>
    <li><a href="<?php echo $hesk_settings['hesk_url']; ?>"><?php echo $hesk_settings['hesk_title']; ?></a></li>
    <li class="active"><?php echo $hesklang['tid_sent']; ?></li>
</ol>

<div style="width: 80%; margin-left: auto; margin-right: auto;">
    <?php
    if ($createTicket) {
        // Show success message with link to ticket
        hesk_show_success(

            $hesklang['ticket_submitted'] . '<br /><br />' .
            $hesklang['ticket_submitted_success'] . ': <b>' . $ticket['trackid'] . '</b><br /><br /> ' .
            ( ! $email_available ? $hesklang['write_down'] . '<br /><br />' : '') .
            ($email_available && $hesk_settings['notify_new'] && $hesk_settings['spam_notice'] ? $hesklang['spam_inbox'] . '<br /><br />' : '') .
            '<a href="' . $hesk_settings['hesk_url'] . '/ticket.php?track=' . $ticket['trackid'] . '">' . $hesklang['view_your_ticket'] . '</a>'
        );
    } else {
        hesk_show_notice($hesklang['verify_your_email'] . '<br><br>' . $hesklang['check_spambox']);
    }

    // Any other messages to display?
    hesk_handle_messages();
    ?>
</div>

<?php
require_once(HESK_PATH . 'inc/footer.inc.php');
exit();


function hesk_forceStop()
{
    global $hesklang;
    ?>
    <html>
    <head>
        <meta http-equiv="Refresh" content="0; url=index.php?a=add"/>
    </head>
    <body>
    <p><a href="index.php?a=add"><?php echo $hesklang['c2c']; ?></a>.</p>
    </body>
    </html>
    <?php
    exit();
} // END hesk_forceStop()
?>
