class.ilMailFormGUI.php

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<?php
/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once 'Services/User/classes/class.ilObjUser.php';
require_once 'Services/Mail/classes/class.ilMailbox.php';
require_once 'Services/Mail/classes/class.ilFormatMail.php';
require_once './Services/Mail/classes/class.ilFileDataMail.php';
require_once 'Services/Mail/classes/class.ilMailFormCall.php';

class ilMailFormGUI
{
    private $tpl;

    private $ctrl;

    private $lng;

    private $user;

    private $tabs;

    private $toolbar;

    private $rbacsystem;

    private $umail;

    private $mbox;

    private $mfile;

    private $purifier;

    public function __construct(\ilMailBodyPurifier $bodyPurifier = null)
    {
        global $DIC;

        $this->tpl        = $DIC->ui()->mainTemplate();
        $this->ctrl       = $DIC->ctrl();
        $this->lng        = $DIC->language();
        $this->user       = $DIC->user();
        $this->tabs       = $DIC->tabs();
        $this->toolbar    = $DIC->toolbar();
        $this->rbacsystem = $DIC->rbac()->system();

        $this->umail = new ilFormatMail($this->user->getId());
        $this->mfile = new ilFileDataMail($this->user->getId());
        $this->mbox  = new ilMailBox($this->user->getId());

        if (null === $bodyPurifier) {
            $bodyPurifier = new ilMailBodyPurifier();
        }
        $this->purifier = $bodyPurifier;

        if (isset($_POST['mobj_id']) && (int) $_POST['mobj_id']) {
            $_GET['mobj_id'] = $_POST['mobj_id'];
        }

        if (!(int) $_GET['mobj_id']) {
            $_GET['mobj_id'] = $this->mbox->getInboxFolder();
        }
        $_GET['mobj_id'] = (int) $_GET['mobj_id'];

        $this->ctrl->saveParameter($this, 'mobj_id');
    }

    public function executeCommand()
    {
        $forward_class = $this->ctrl->getNextClass($this);
        switch ($forward_class) {
            case 'ilmailfoldergui':
                include_once 'Services/Mail/classes/class.ilMailFolderGUI.php';

                $this->ctrl->forwardCommand(new ilMailFolderGUI());
                break;

            case 'ilmailattachmentgui':
                include_once 'Services/Mail/classes/class.ilMailAttachmentGUI.php';

                $this->ctrl->setReturn($this, "returnFromAttachments");
                $this->ctrl->forwardCommand(new ilMailAttachmentGUI());
                break;

            case 'ilmailsearchgui':
                include_once 'Services/Contact/classes/class.ilMailSearchGUI.php';

                $this->ctrl->setReturn($this, "searchResults");
                $this->ctrl->forwardCommand(new ilMailSearchGUI());
                break;

            case 'ilmailsearchcoursesgui':
                include_once 'Services/Contact/classes/class.ilMailSearchCoursesGUI.php';

                $this->ctrl->setReturn($this, "searchResults");
                $this->ctrl->forwardCommand(new ilMailSearchCoursesGUI());
                break;
            
            case 'ilmailinglistsgui':
                include_once 'Services/Contact/classes/class.ilMailingListsGUI.php';

                $this->ctrl->setReturn($this, 'searchResults');
                $this->ctrl->forwardCommand(new ilMailingListsGUI());
                break;

            case 'ilmailsearchgroupsgui':
                include_once 'Services/Contact/classes/class.ilMailSearchGroupsGUI.php';

                $this->ctrl->setReturn($this, "searchResults");
                $this->ctrl->forwardCommand(new ilMailSearchGroupsGUI());
                break;

            default:
                if (!($cmd = $this->ctrl->getCmd())) {
                    $cmd = "showForm";
                }

                $this->$cmd();
                break;
        }
        return true;
    }

    protected function decodeAttachmentFiles(array $files)
    {
        $decodedFiles = array();

        foreach ($files as $value) {
            if (is_file($this->mfile->getMailPath() . '/' . $this->user->getId() . '_' . urldecode($value))) {
                $decodedFiles[] = urldecode($value);
            }
        }

        return $decodedFiles;
    }

    public function sendMessage()
    {
        $m_type = isset($_POST["m_type"]) ? $_POST["m_type"] : array("normal");

        $message = (string) $_POST['m_message'];
        $mailBody = new ilMailBody($message, $this->purifier);

        $sanitizedMessage = $mailBody->getContent();

        $files = $this->decodeAttachmentFiles(isset($_POST['attachments']) ? (array) $_POST['attachments'] : array());

        $this->umail->setSaveInSentbox(true);
        if ($errors = $this->umail->sendMail(
            ilUtil::securePlainString($_POST['rcp_to']),
            ilUtil::securePlainString($_POST['rcp_cc']),
            ilUtil::securePlainString($_POST['rcp_bcc']),
            ilUtil::securePlainString($_POST['m_subject']),
            $sanitizedMessage,
            $files,
            $m_type,
            (int) $_POST['use_placeholders']
        )
            ) {
            $_POST['attachments'] = $files;
            $this->showSubmissionErrors($errors);
        } else {
            $this->umail->savePostData($this->user->getId(), array(), "", "", "", "", "", "", "", "");
            
            $this->ctrl->setParameterByClass('ilmailgui', 'type', 'message_sent');

            if (ilMailFormCall::isRefererStored()) {
                ilUtil::sendInfo($this->lng->txt('mail_message_send'), true);
                ilUtil::redirect(ilMailFormCall::getRefererRedirectUrl());
            } else {
                $this->ctrl->redirectByClass('ilmailgui');
            }
        }

        $this->showForm();
    }

    public function saveDraft()
    {
        if (!$_POST['m_subject']) {
            $_POST['m_subject'] = 'No title';
        }

        $draftFolderId = $this->mbox->getDraftsFolder();
        $files         = $this->decodeAttachmentFiles(isset($_POST['attachments']) ? (array) $_POST['attachments'] : array());

        if ($errors = $this->umail->validateRecipients(
            ilUtil::securePlainString($_POST['rcp_to']),
            ilUtil::securePlainString($_POST['rcp_cc']),
            ilUtil::securePlainString($_POST['rcp_bcc'])
        )) {
            $_POST['attachments'] = $files;
            $this->showSubmissionErrors($errors);
            $this->showForm();
            return;
        }

        if (isset($_SESSION["draft"])) {
            $draftId = (int) $_SESSION['draft'];
            unset($_SESSION['draft']);
        } else {
            $draftId = $this->umail->getNewDraftId($this->user->getId(), $draftFolderId);
        }

        $this->umail->updateDraft(
            $draftFolderId,
            $files,
            ilUtil::securePlainString($_POST['rcp_to']),
            ilUtil::securePlainString($_POST['rcp_cc']),
            ilUtil::securePlainString($_POST['rcp_bcc']),
            $_POST['m_type'],
            ilUtil::securePlainString($_POST['m_email']),
            ilUtil::securePlainString($_POST['m_subject']),
            ilUtil::securePlainString($_POST['m_message']),
            $draftId,
            (int) $_POST['use_placeholders'],
            ilMailFormCall::getContextId(),
            ilMailFormCall::getContextParameters()
        );

        ilUtil::sendInfo($this->lng->txt('mail_saved'), true);

        if (ilMailFormCall::isRefererStored()) {
            ilUtil::redirect(ilMailFormCall::getRefererRedirectUrl());
        } else {
            $this->ctrl->redirectByClass(['ilmailgui', 'ilmailfoldergui']);
        }

        $this->showForm();
    }

    public function searchUsers($save = true)
    {
        $this->tpl->setTitle($this->lng->txt("mail"));

        if ($save) {
            // decode post values
            $files = array();
            if (is_array($_POST['attachments'])) {
                foreach ($_POST['attachments'] as $value) {
                    $files[] = urldecode($value);
                }
            }
            
            // Note: For security reasons, ILIAS only allows Plain text strings in E-Mails.
            $this->umail->savePostData(
                $this->user->getId(),
                $files,
                ilUtil::securePlainString($_POST["rcp_to"]),
                ilUtil::securePlainString($_POST["rcp_cc"]),
                ilUtil::securePlainString($_POST["rcp_bcc"]),
                $_POST["m_type"],
                ilUtil::securePlainString($_POST["m_email"]),
                ilUtil::securePlainString($_POST["m_subject"]),
                ilUtil::securePlainString($_POST["m_message"]),
                ilUtil::securePlainString($_POST['use_placeholders']),
                ilMailFormCall::getContextId(),
                ilMailFormCall::getContextParameters()
            );
        }
        include_once 'Services/Form/classes/class.ilPropertyFormGUI.php';
        $form = new ilPropertyFormGUI();
        $form->setId('search_rcp');
        $form->setTitle($this->lng->txt('search_recipients'));
        $form->setFormAction($this->ctrl->getFormAction($this, 'search'));
        
        $inp = new ilTextInputGUI($this->lng->txt("search_for"), 'search');
        $inp->setSize(30);
        $dsDataLink = $this->ctrl->getLinkTarget($this, 'lookupRecipientAsync', '', true, false);
        $inp->setDataSource($dsDataLink);
        
        if (strlen(trim($_SESSION["mail_search_search"])) > 0) {
            $inp->setValue(ilUtil::prepareFormOutput(trim($_SESSION["mail_search_search"]), true));
        }
        $form->addItem($inp);

        $form->addCommandButton('search', $this->lng->txt("search"));
        $form->addCommandButton('cancelSearch', $this->lng->txt("cancel"));

        $this->tpl->setContent($form->getHtml());
        $this->tpl->show();
    }

    public function searchCoursesTo()
    {
        $this->saveMailBeforeSearch();

        if ($_SESSION['search_crs']) {
            $this->ctrl->setParameterByClass('ilmailsearchcoursesgui', 'cmd', 'showMembers');
        }
        
        $this->ctrl->setParameterByClass('ilmailsearchcoursesgui', 'ref', 'mail');
        $this->ctrl->redirectByClass('ilmailsearchcoursesgui');
    }

    public function searchGroupsTo()
    {
        $this->saveMailBeforeSearch();

        $this->ctrl->setParameterByClass('ilmailsearchgroupsgui', 'ref', 'mail');
        $this->ctrl->redirectByClass('ilmailsearchgroupsgui');
    }

    public function search()
    {
        $_SESSION["mail_search_search"] = $_POST["search"];
        if (strlen(trim($_SESSION["mail_search_search"])) == 0) {
            ilUtil::sendInfo($this->lng->txt("mail_insert_query"));
            $this->searchUsers(false);
        } else {
            if (strlen(trim($_SESSION["mail_search_search"])) < 3) {
                $this->lng->loadLanguageModule('search');
                ilUtil::sendInfo($this->lng->txt('search_minimum_three'));
                $this->searchUsers(false);
            } else {
                $this->ctrl->setParameterByClass("ilmailsearchgui", "search", urlencode($_SESSION["mail_search_search"]));
                $this->ctrl->redirectByClass("ilmailsearchgui");
            }
        }
    }

    public function cancelSearch()
    {
        unset($_SESSION["mail_search"]);
        $this->searchResults();
    }

    public function editAttachments()
    {
        // decode post values
        $files = array();
        if (is_array($_POST['attachments'])) {
            foreach ($_POST['attachments'] as $value) {
                $files[] = urldecode($value);
            }
        }
        
        // Note: For security reasons, ILIAS only allows Plain text messages.
        $this->umail->savePostData(
            $this->user->getId(),
            $files,
            ilUtil::securePlainString($_POST["rcp_to"]),
            ilUtil::securePlainString($_POST["rcp_cc"]),
            ilUtil::securePlainString($_POST["rcp_bcc"]),
            $_POST["m_type"],
            ilUtil::securePlainString($_POST["m_email"]),
            ilUtil::securePlainString($_POST["m_subject"]),
            ilUtil::securePlainString($_POST["m_message"]),
            ilUtil::securePlainString($_POST['use_placeholders']),
            ilMailFormCall::getContextId(),
            ilMailFormCall::getContextParameters()
        );
            
        $this->ctrl->redirectByClass("ilmailattachmentgui");
    }

    public function returnFromAttachments()
    {
        $_GET["type"] = "attach";
        $this->showForm();
    }
    
    public function searchResults()
    {
        $_GET["type"] = "search_res";
        $this->showForm();
    }

    public function mailUser()
    {
        $_GET["type"] = "new";
        $this->showForm();
    }

    public function mailRole()
    {
        $_GET["type"] = "role";
        $this->showForm();
    }

    public function replyMail()
    {
        $_GET["type"] = "reply";
        $this->showForm();
    }

    public function mailAttachment()
    {
        $_GET["type"] = "attach";
        $this->showForm();
    }

    protected function getTemplateDataById()
    {
        require_once 'Services/JSON/classes/class.ilJsonUtil.php';

        if (!isset($_GET['template_id'])) {
            exit();
        }

        try {
            require_once 'Services/Mail/classes/class.ilMailTemplateService.php';
            require_once 'Services/Mail/classes/class.ilMailTemplateDataProvider.php';
            $template_id = (int) $_GET['template_id'];
            $template_provider = new ilMailTemplateDataProvider();
            $template = $template_provider->getTemplateById($template_id);
            $context = ilMailTemplateService::getTemplateContextById($template->getContext());
            echo json_encode(array(
                'm_subject' => $template->getSubject(),
                'm_message' => $template->getMessage()
            ));
        } catch (Exception $e) {
        }
        exit();
    }

    public function showForm()
    {
        $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.mail_new.html", "Services/Mail");
        $this->tpl->setTitle($this->lng->txt("mail"));
        
        $this->lng->loadLanguageModule("crs");

        if (ilMailFormCall::isRefererStored()) {
            $this->tabs->setBackTarget($this->lng->txt('back'), $this->ctrl->getLinkTarget($this, 'cancelMail'));
        }

        switch ($_GET["type"]) {
            case 'reply':
                if ($_SESSION['mail_id']) {
                    $_GET['mail_id'] = $_SESSION['mail_id'];
                }
                $mailData = $this->umail->getMail($_GET["mail_id"]);
                $mailData["m_subject"] = $this->umail->formatReplySubject();
                $mailData["m_message"] = $this->umail->formatReplyMessage();
                $mailData["m_message"] = $this->umail->prependSignature();
                // NO ATTACHMENTS FOR REPLIES
                $mailData["attachments"] = array();
                //$mailData["rcp_cc"] = $this->umail->formatReplyRecipientsForCC();
                $mailData["rcp_cc"] = '';
                $mailData["rcp_to"] = $this->umail->formatReplyRecipient();
                $_SESSION["mail_id"] = "";
                break;
        
            case 'search_res':
                $mailData = $this->umail->getSavedData();

                /*if($_SESSION["mail_search_results"])
                {
                    $mailData = $this->umail->appendSearchResult($_SESSION["mail_search_results"],$_SESSION["mail_search"]);
                }
                unset($_SESSION["mail_search"]);
                unset($_SESSION["mail_search_results"]);*/

                if ($_SESSION["mail_search_results_to"]) {
                    $mailData = $this->umail->appendSearchResult($_SESSION["mail_search_results_to"], 'to');
                }
                if ($_SESSION["mail_search_results_cc"]) {
                    $mailData = $this->umail->appendSearchResult($_SESSION["mail_search_results_cc"], 'cc');
                }
                if ($_SESSION["mail_search_results_bcc"]) {
                    $mailData = $this->umail->appendSearchResult($_SESSION["mail_search_results_bcc"], 'bc');
                }
                
                unset($_SESSION["mail_search_results_to"]);
                unset($_SESSION["mail_search_results_cc"]);
                unset($_SESSION["mail_search_results_bcc"]);
                                
                break;
        
            case 'attach':
                $mailData = $this->umail->getSavedData();
                break;
        
            case 'draft':
                $_SESSION["draft"] = $_GET["mail_id"];
                $mailData = $this->umail->getMail($_GET["mail_id"]);
                ilMailFormCall::setContextId($mailData['tpl_ctx_id']);
                ilMailFormCall::setContextParameters($mailData['tpl_ctx_params']);
                break;
        
            case 'forward':
                $mailData = $this->umail->getMail($_GET["mail_id"]);
                $mailData["rcp_to"] = $mailData["rcp_cc"] = $mailData["rcp_bcc"] = '';
                $mailData["m_subject"] = $this->umail->formatForwardSubject();
                $mailData["m_message"] = $this->umail->prependSignature();
                if (is_array($mailData["attachments"]) && count($mailData["attachments"])) {
                    if ($error = $this->mfile->adoptAttachments($mailData["attachments"], $_GET["mail_id"])) {
                        ilUtil::sendInfo($error);
                    }
                }
                break;
        
            case 'new':
                if ($_GET['rcp_to']) {
                    // Note: For security reasons, ILIAS only allows Plain text strings in E-Mails.
                    $mailData["rcp_to"] = ilUtil::securePlainString($_GET['rcp_to']);
                } elseif ($_SESSION['rcp_to']) {
                    $mailData["rcp_to"] = $_SESSION['rcp_to'];
                }
                if ($_GET['rcp_cc']) {
                    // Note: For security reasons, ILIAS only allows Plain text strings in E-Mails.
                    $mailData["rcp_cc"] = ilUtil::securePlainString($_GET['rcp_cc']);
                } elseif ($_SESSION['rcp_cc']) {
                    $mailData["rcp_cc"] = $_SESSION['rcp_cc'];
                }
                if ($_GET['rcp_bcc']) {
                    // Note: For security reasons, ILIAS only allows Plain text strings in E-Mails.
                    $mailData["rcp_bcc"] = ilUtil::securePlainString($_GET['rcp_bcc']);
                } elseif ($_SESSION['rcp_bcc']) {
                    $mailData["rcp_bcc"] = $_SESSION['rcp_bcc'];
                }
                $mailData['m_message'] = '';
                if (strlen($sig = ilMailFormCall::getSignature())) {
                    $mailData['m_message'] = $sig;
                    $mailData['m_message'] .= chr(13) . chr(10) . chr(13) . chr(10);
                }
                $mailData['m_message'] .= $this->umail->appendSignature();

                $_SESSION['rcp_to'] = '';
                $_SESSION['rcp_cc'] = '';
                $_SESSION['rcp_bcc'] = '';
                break;
        
            case 'role':
        
                if (is_array($_POST['roles'])) {
                    // Note: For security reasons, ILIAS only allows Plain text strings in E-Mails.
                    $mailData['rcp_to'] = ilUtil::securePlainString(implode(',', $_POST['roles']));
                } elseif (is_array($_SESSION['mail_roles'])) {
                    $mailData['rcp_to'] = ilUtil::securePlainString(implode(',', $_SESSION['mail_roles']));
                }

                $mailData['m_message'] = '';
                if (strlen($sig = ilMailFormCall::getSignature())) {
                    $mailData['m_message'] = $sig;
                    $mailData['m_message'] .= chr(13) . chr(10) . chr(13) . chr(10);
                }
        
                $mailData['m_message'] .= $_POST["additional_message_text"] . chr(13) . chr(10) . $this->umail->appendSignature();
                $_POST["additional_message_text"] = "";
                $_SESSION['mail_roles'] = [];
                break;
        
            case 'address':
                $mailData["rcp_to"] = urldecode($_GET["rcp"]);
                break;
        
            default:
                // GET DATA FROM POST
                $mailData = $_POST;

                // strip slashes
                foreach ($mailData as $key => $value) {
                    if (is_string($value)) {
                        // Note: For security reasons, ILIAS only allows Plain text strings in E-Mails.
                        $mailData[$key] = ilUtil::securePlainString($value);
                    }
                }
                break;
        }

        include_once('./Services/Form/classes/class.ilPropertyFormGUI.php');

        $form_gui = new ilPropertyFormGUI();
        $form_gui->setTitle($this->lng->txt('compose'));
        $form_gui->setId('mail_compose_form');
        $form_gui->setName('mail_compose_form');
        $form_gui->setFormAction($this->ctrl->getFormAction($this, 'sendMessage'));

        $this->tpl->setVariable('FORM_ID', $form_gui->getId());

        require_once 'Services/UIComponent/Button/classes/class.ilButton.php';
        $btn = ilButton::getInstance();
        $btn->setButtonType(ilButton::BUTTON_TYPE_SUBMIT);
        $btn->setForm('form_' . $form_gui->getName())
            ->setName('searchUsers')
            ->setCaption('search_recipients');
        $this->toolbar->addStickyItem($btn);

        $btn = ilButton::getInstance();
        $btn->setButtonType(ilButton::BUTTON_TYPE_SUBMIT)
            ->setName('searchCoursesTo')
            ->setForm('form_' . $form_gui->getName())
            ->setCaption('mail_my_courses');
        $this->toolbar->addButtonInstance($btn);

        $btn = ilButton::getInstance();
        $btn->setButtonType(ilButton::BUTTON_TYPE_SUBMIT)
            ->setName('searchGroupsTo')
            ->setForm('form_' . $form_gui->getName())
            ->setCaption('mail_my_groups');
        $this->toolbar->addButtonInstance($btn);

        require_once 'Services/Contact/BuddySystem/classes/class.ilBuddySystem.php';
        if (count(ilBuddyList::getInstanceByGlobalUser()->getLinkedRelations()) > 0) {
            $btn = ilButton::getInstance();
            $btn->setButtonType(ilButton::BUTTON_TYPE_SUBMIT)
                ->setName('searchMailingListsTo')
                ->setForm('form_' . $form_gui->getName())
                ->setCaption('mail_my_mailing_lists');
            $this->toolbar->addButtonInstance($btn);
        }

        $dsDataLink = $this->ctrl->getLinkTarget($this, 'lookupRecipientAsync', '', true);
        
        // RECIPIENT
        $inp = new ilTextInputGUI($this->lng->txt('mail_to'), 'rcp_to');
        $inp->setRequired(true);
        $inp->setSize(50);
        $inp->setValue($mailData["rcp_to"]);
        $inp->setDataSource($dsDataLink, ",");
        $inp->setMaxLength(null);
        $form_gui->addItem($inp);

        // CC
        $inp = new ilTextInputGUI($this->lng->txt('cc'), 'rcp_cc');
        $inp->setSize(50);
        $inp->setValue($mailData["rcp_cc"]);
        $inp->setDataSource($dsDataLink, ",");
        $inp->setMaxLength(null);
        $form_gui->addItem($inp);

        // BCC
        $inp = new ilTextInputGUI($this->lng->txt('bc'), 'rcp_bcc');
        $inp->setSize(50);
        $inp->setValue($mailData["rcp_bcc"]);
        $inp->setDataSource($dsDataLink, ",");
        $inp->setMaxLength(null);
        $form_gui->addItem($inp);

        // SUBJECT
        $inp = new ilTextInputGUI($this->lng->txt('subject'), 'm_subject');
        $inp->setSize(50);
        $inp->setRequired(true);
        $inp->setValue($mailData["m_subject"]);
        $form_gui->addItem($inp);

        // Attachments
        include_once 'Services/Mail/classes/class.ilMailFormAttachmentFormPropertyGUI.php';
        $att = new ilMailFormAttachmentPropertyGUI($this->lng->txt(($mailData["attachments"]) ? 'edit' : 'add'));
        
        if (is_array($mailData["attachments"]) && count($mailData["attachments"])) {
            foreach ($mailData["attachments"] as $data) {
                if (is_file($this->mfile->getMailPath() . '/' . $this->user->getId() . "_" . $data)) {
                    $hidden = new ilHiddenInputGUI('attachments[]');
                    $form_gui->addItem($hidden);
                    $size = filesize($this->mfile->getMailPath() . '/' . $this->user->getId() . "_" . $data);
                    $label = $data . " [" . ilUtil::formatSize($size) . "]";
                    $att->addItem($label);
                    $hidden->setValue(urlencode($data));
                }
            }
        }
        $form_gui->addItem($att);

        // ONLY IF SYSTEM MAILS ARE ALLOWED
        if ($this->rbacsystem->checkAccess("system_message", $this->umail->getMailObjectReferenceId())) {
            $chb = new ilCheckboxInputGUI($this->lng->txt('type'), 'm_type[]');
            $chb->setOptionTitle($this->lng->txt('system_message'));
            $chb->setValue('system');
            $chb->setChecked(false);
            if (is_array($mailData["m_type"]) and in_array('system', $mailData["m_type"])) {
                $chb->setChecked(true);
            }
            $form_gui->addItem($chb);
        }

        if (ilMailFormCall::getContextId()) {
            $context_id = ilMailFormCall::getContextId();

            // Activate placeholders
            $mailData['use_placeholders'] = true;

            try {
                require_once 'Services/Mail/classes/class.ilMailTemplateService.php';
                $context = ilMailTemplateService::getTemplateContextById($context_id);

                require_once 'Services/Mail/classes/class.ilMailTemplateDataProvider.php';
                $template_provider = new ilMailTemplateDataProvider();
                $templates = $template_provider->getTemplateByContextId($context->getId());

                if (count($templates)) {
                    $options = array();
                    foreach ($templates as $template) {
                        $options[$template->getTplId()] = $template->getTitle();
                    }
                    asort($options);

                    require_once 'Services/Mail/classes/Form/class.ilMailTemplateSelectInputGUI.php';
                    $template_chb = new ilMailTemplateSelectInputGUI(
                        $this->lng->txt('mail_template_client'),
                        'template_id',
                        $this->ctrl->getLinkTarget($this, 'getTemplateDataById', '', true, false),
                        array('m_subject', 'm_message')
                    );
                    $template_chb->setInfo($this->lng->txt('mail_template_client_info'));
                    $template_chb->setOptions(array('' => $this->lng->txt('please_choose')) + $options);
                    $form_gui->addItem($template_chb);
                }
            } catch (Exception $e) {
                require_once './Services/Logging/classes/public/class.ilLoggerFactory.php';
                ilLoggerFactory::getLogger('mail')->error(sprintf('%s has been called with invalid context id: %s.', __METHOD__, $context_id));
            }
        } else {
            require_once 'Services/Mail/classes/class.ilMailTemplateGenericContext.php';
            $context = new ilMailTemplateGenericContext();
        }

        // MESSAGE
        $inp = new ilTextAreaInputGUI($this->lng->txt('message_content'), 'm_message');
        //$inp->setValue(htmlspecialchars($mailData["m_message"], false));
        $inp->setValue($mailData["m_message"]);
        $inp->setRequired(false);
        $inp->setCols(60);
        $inp->setRows(10);
        $form_gui->addItem($inp);

        // PLACEHOLDERS
        $chb = new ilCheckboxInputGUI($this->lng->txt('mail_serial_letter_placeholders'), 'use_placeholders');
        $chb->setOptionTitle($this->lng->txt('activate_serial_letter_placeholders'));
        $chb->setValue(1);
        if (isset($mailData['use_placeholders']) && $mailData['use_placeholders']) {
            $chb->setChecked(true);
        }
        
        require_once 'Services/Mail/classes/Form/class.ilManualPlaceholderInputGUI.php';
        $placeholders = new ilManualPlaceholderInputGUI('m_message');
        $placeholders->setInstructionText($this->lng->txt('mail_nacc_use_placeholder'));
        $placeholders->setAdviseText(sprintf($this->lng->txt('placeholders_advise'), '<br />'));
        foreach ($context->getPlaceholders() as $key => $value) {
            $placeholders->addPlaceholder($value['placeholder'], $value['label']);
        }
        $chb->addSubItem($placeholders);
        $form_gui->addItem($chb);

        $form_gui->addCommandButton('sendMessage', $this->lng->txt('send_mail'));
        $form_gui->addCommandButton('saveDraft', $this->lng->txt('save_message'));
        if (ilMailFormCall::isRefererStored()) {
            $form_gui->addCommandButton('cancelMail', $this->lng->txt('cancel'));
        }

        $this->tpl->parseCurrentBlock();

        $this->tpl->setVariable('FORM', $form_gui->getHTML());

        $this->tpl->addJavaScript('Services/Mail/js/ilMailComposeFunctions.js');
        $this->tpl->show();
    }

    public function lookupRecipientAsync()
    {
        include_once 'Services/JSON/classes/class.ilJsonUtil.php';
        include_once 'Services/Mail/classes/class.ilMailForm.php';
        $search = '';
        if (isset($_GET["term"]) && is_string($_GET["term"])) {
            $search = $_GET["term"];
        }
        if (isset($_POST["term"]) && is_string($_POST["term"])) {
            $search = $_POST["term"];
        }

        $search = trim($search);

        $result = array();

        require_once 'Services/Utilities/classes/class.ilStr.php';
        if (\ilStr::strLen($search) < 3) {
            echo json_encode($result);
            exit;
        }

        // #14768
        $quoted = ilUtil::stripSlashes($search);
        $quoted = str_replace('%', '\%', $quoted);
        $quoted = str_replace('_', '\_', $quoted);

        $mailFormObj = new ilMailForm;
        $result      = $mailFormObj->getRecipientAsync("%" . $quoted . "%", ilUtil::stripSlashes($search));

        echo json_encode($result);
        exit;
    }

    public function cancelMail()
    {
        if (ilMailFormCall::isRefererStored()) {
            ilUtil::redirect(ilMailFormCall::getRefererRedirectUrl());
        }

        $this->showForm();
    }

    protected function saveMailBeforeSearch()
    {
        $files = array();
        if (is_array($_POST['attachments'])) {
            foreach ($_POST['attachments'] as $value) {
                $files[] = urldecode($value);
            }
        }

        $this->umail->savePostData(
            $this->user->getId(),
            $files,
            ilUtil::securePlainString($_POST['rcp_to']),
            ilUtil::securePlainString($_POST['rcp_cc']),
            ilUtil::securePlainString($_POST['rcp_bcc']),
            $_POST['m_type'],
            ilUtil::securePlainString($_POST['m_email']),
            ilUtil::securePlainString($_POST['m_subject']),
            ilUtil::securePlainString($_POST['m_message']),
            ilUtil::securePlainString($_POST['use_placeholders']),
            ilMailFormCall::getContextId(),
            ilMailFormCall::getContextParameters()
        );
    }

    public function searchMailingListsTo()
    {
        $this->saveMailBeforeSearch();

        $this->ctrl->setParameterByClass('ilmailinglistsgui', 'ref', 'mail');
        $this->ctrl->redirectByClass('ilmailinglistsgui');
    }

    protected function showSubmissionErrors(array $errors)
    {
        $errors_to_display = array();

        foreach ($errors as $error) {
            $error       = array_values($error);
            $first_error = array_shift($error);

            $translation = $this->lng->txt($first_error);
            if ($translation == '-' . $first_error . '-') {
                $translation = $first_error;
            }

            if (count($error) == 0 || $translation == $first_error) {
                $errors_to_display[] = $translation;
            } else {
                // We expect all other parts of this error array are recipient addresses = input parameters
                $error = array_map(function ($address) {
                    return ilUtil::prepareFormOutput($address);
                }, $error);

                array_unshift($error, $translation);
                $errors_to_display[] = call_user_func_array('sprintf', $error);
            }
        }

        if (count($errors_to_display) > 0) {
            $tpl = new ilTemplate('tpl.mail_new_submission_errors.html', true, true, 'Services/Mail');
            if (count($errors_to_display) == 1) {
                $tpl->setCurrentBlock('single_error');
                $tpl->setVariable('SINGLE_ERROR', current($errors_to_display));
                $tpl->parseCurrentBlock();
            } else {
                $first_error = array_shift($errors_to_display);

                foreach ($errors_to_display as $error) {
                    $tpl->setCurrentBlock('error_loop');
                    $tpl->setVariable('ERROR', $error);
                    $tpl->parseCurrentBlock();
                }

                $tpl->setCurrentBlock('multiple_errors');
                $tpl->setVariable('FIRST_ERROR', $first_error);
                $tpl->parseCurrentBlock();
            }

            ilUtil::sendInfo($tpl->get());
        }
    }
}